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📁 ＳＫＹＳＨＥＬＬＭＡＮＡＧＥＲ PHP v8.2.30

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Name	Size	Perm	Actions
📁 .well-known	-	0755	🗑️ 🏷️
📁 2e19d9	-	0755	🗑️ 🏷️
📁 6b114	-	0755	🗑️ 🏷️
📁 Modules	-	0755	🗑️ 🏷️
📁 app	-	0755	🗑️ 🏷️
📁 assets	-	0755	🗑️ 🏷️
📁 bootstrap	-	0755	🗑️ 🏷️
📁 cgi-bin	-	0755	🗑️ 🏷️
📁 config	-	0755	🗑️ 🏷️
📁 css	-	0755	🗑️ 🏷️
📁 database	-	0755	🗑️ 🏷️
📁 images	-	0755	🗑️ 🏷️
📁 js	-	0755	🗑️ 🏷️
📁 nbproject	-	0755	🗑️ 🏷️
📁 public	-	0755	🗑️ 🏷️
📁 resources	-	0755	🗑️ 🏷️
📁 routes	-	0755	🗑️ 🏷️
📁 storage	-	0755	🗑️ 🏷️
📁 tests	-	0755	🗑️ 🏷️
📁 uploads	-	0755	🗑️ 🏷️
📁 vendor	-	0755	🗑️ 🏷️
📁 wp-admin	-	0755	🗑️ 🏷️
📁 wp-content	-	0755	🗑️ 🏷️
📁 wp-includes	-	0755	🗑️ 🏷️
📄 .htaccess	0.23 KB	0444	🗑️ 🏷️ ⬇️ ✏️
📄 COOKIE.txt	0.2 KB	0644	🗑️ 🏷️ ⬇️ ✏️
📄 X7ROOT.txt	0.27 KB	0644	🗑️ 🏷️ ⬇️ ✏️
📄 defaults.php	1.29 KB	0444	🗑️ 🏷️ ⬇️ ✏️
📄 engine.php	0 KB	0644	🗑️ 🏷️ ⬇️ ✏️
📄 error_log	813.08 KB	0644	🗑️ 🏷️ ⬇️ ✏️
📄 features.php	11.28 KB	0644	🗑️ 🏷️ ⬇️ ✏️
📄 googlecfb82e09419fc0f6.html	0.05 KB	0644	🗑️ 🏷️ ⬇️ ✏️
📄 index.php	12.43 KB	0555	🗑️ 🏷️ ⬇️ ✏️
📄 index.php0	1.56 KB	0644	🗑️ 🏷️ ⬇️ ✏️
📄 inputs.php	0.12 KB	0644	🗑️ 🏷️ ⬇️ ✏️
📄 kurd.html	1.07 KB	0644	🗑️ 🏷️ ⬇️ ✏️
📄 library.php	0 KB	0644	🗑️ 🏷️ ⬇️ ✏️
📄 min.php	6.83 KB	0444	🗑️ 🏷️ ⬇️ ✏️
📄 p.php	2.75 KB	0644	🗑️ 🏷️ ⬇️ ✏️
📄 php.ini	0.04 KB	0644	🗑️ 🏷️ ⬇️ ✏️
📄 product.php	1.78 KB	0444	🗑️ 🏷️ ⬇️ ✏️
📄 qpmwztts.php	0.74 KB	0644	🗑️ 🏷️ ⬇️ ✏️
📄 robots.txt	0.32 KB	0444	🗑️ 🏷️ ⬇️ ✏️
📄 tovmbkwh.php	0.74 KB	0644	🗑️ 🏷️ ⬇️ ✏️
📄 tyyffovi.php	0.74 KB	0644	🗑️ 🏷️ ⬇️ ✏️
📄 veoxv.html	1.23 KB	0644	🗑️ 🏷️ ⬇️ ✏️

Edit: wp

#!/usr/bin/env php
<?php
Phar::mapPhar();
include 'phar://wp-cli.phar/php/boot-phar.php';
__HALT_COMPILER(); ?>
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// Can be used by plugins/themes to check if WP-CLI is running or not.
define( 'WP_CLI', true );
define( 'WP_CLI_VERSION', trim( file_get_contents( WP_CLI_ROOT . '/VERSION' ) ) );
define( 'WP_CLI_START_MICROTIME', microtime( true ) );

if ( file_exists( WP_CLI_ROOT . '/vendor/autoload.php' ) ) {
	define( 'WP_CLI_VENDOR_DIR', WP_CLI_ROOT . '/vendor' );
} elseif ( file_exists( dirname( dirname( WP_CLI_ROOT ) ) . '/autoload.php' ) ) {
	define( 'WP_CLI_VENDOR_DIR', dirname( dirname( WP_CLI_ROOT ) ) );
} elseif ( file_exists( dirname( WP_CLI_ROOT ) . '/vendor/autoload.php' ) ) {
	define( 'WP_CLI_VENDOR_DIR', dirname( WP_CLI_ROOT ) . '/vendor' );
} else {
	define( 'WP_CLI_VENDOR_DIR', WP_CLI_ROOT . '/vendor' );
}

require_once WP_CLI_ROOT . '/php/compat.php';

// Set common headers, to prevent warnings from plugins.
$_SERVER['SERVER_PROTOCOL'] = 'HTTP/1.0';
$_SERVER['HTTP_USER_AGENT'] = '';
$_SERVER['REQUEST_METHOD']  = 'GET';
$_SERVER['REMOTE_ADDR']     = '127.0.0.1';

require_once WP_CLI_ROOT . '/php/bootstrap.php';
WP_CLI\bootstrap();
<?php

namespace WP_CLI;

use Exception;

class ExitException extends Exception {}
<?php

namespace WP_CLI;

/**
 * Generate a synopsis from a command's PHPdoc arguments.
 * Turns something like "<object-id>..."
 * into [ optional=>false, type=>positional, repeating=>true, name=>object-id ]
 */
class SynopsisParser {

/**
	 * @param string $synopsis A synopsis
	 * @return array List of parameters
	 */
	public static function parse( $synopsis ) {
		$tokens = array_filter( preg_split( '/[\s\t]+/', $synopsis ) );

$params = [];
		foreach ( $tokens as $token ) {
			$param = self::classify_token( $token );

// Some types of parameters shouldn't be mandatory
			if ( isset( $param['optional'] ) && ! $param['optional'] ) {
				if ( 'flag' === $param['type'] || ( 'assoc' === $param['type'] && $param['value']['optional'] ) ) {
					$param['type'] = 'unknown';
				}
			}

$param['token'] = $token;
			$params[]       = $param;
		}

return $params;
	}

/**
	 * Render the Synopsis into a format string.
	 *
	 * @param array $synopsis A structured synopsis. This might get reordered
	 *                        to match the parsed output.
	 * @return string Rendered synopsis.
	 */
	public static function render( &$synopsis ) {
		if ( ! is_array( $synopsis ) ) {
			return '';
		}
		$bits               = [
			'positional' => '',
			'assoc'      => '',
			'generic'    => '',
			'flag'       => '',
		];
		$reordered_synopsis = [
			'positional' => [],
			'assoc'      => [],
			'generic'    => [],
			'flag'       => [],
		];
		foreach ( $bits as $key => &$value ) {
			foreach ( $synopsis as $arg ) {
				if ( empty( $arg['type'] )
					|| $key !== $arg['type'] ) {
					continue;
				}

if ( empty( $arg['name'] ) && 'generic' !== $arg['type'] ) {
					continue;
				}

if ( 'positional' === $key ) {
					$rendered_arg = "<{$arg['name']}>";

$reordered_synopsis['positional'] [] = $arg;
				} elseif ( 'assoc' === $key ) {
					$arg_value    = isset( $arg['value']['name'] ) ? $arg['value']['name'] : $arg['name'];
					$rendered_arg = "--{$arg['name']}=<{$arg_value}>";

$reordered_synopsis['assoc'] [] = $arg;
				} elseif ( 'generic' === $key ) {
					$rendered_arg = '--<field>=<value>';

$reordered_synopsis['generic'] [] = $arg;
				} elseif ( 'flag' === $key ) {
					$rendered_arg = "--{$arg['name']}";

$reordered_synopsis['flag'] [] = $arg;
				}
				if ( ! empty( $arg['repeating'] ) ) {
					$rendered_arg = "{$rendered_arg}...";
				}
				if ( ! empty( $arg['optional'] ) ) {
					$rendered_arg = "[{$rendered_arg}]";
				}
				$value .= "{$rendered_arg} ";
			}
		}
		$rendered = '';
		foreach ( $bits as $v ) {
			if ( ! empty( $v ) ) {
				$rendered .= $v;
			}
		}

$synopsis = array_merge(
			$reordered_synopsis['positional'],
			$reordered_synopsis['assoc'],
			$reordered_synopsis['generic'],
			$reordered_synopsis['flag']
		);

return rtrim( $rendered, ' ' );
	}

/**
	 * Classify argument attributes based on its syntax.
	 *
	 * @param string $token
	 * @return array
	 */
	private static function classify_token( $token ) {
		$param = [];

list( $param['optional'], $token )  = self::is_optional( $token );
		list( $param['repeating'], $token ) = self::is_repeating( $token );

$p_name  = '([a-z-_0-9]+)';
		$p_value = '([a-zA-Z-_|,0-9]+)';

if ( '--<field>=<value>' === $token ) {
			$param['type'] = 'generic';
		} elseif ( preg_match( "/^<($p_value)>$/", $token, $matches ) ) {
			$param['type'] = 'positional';
			$param['name'] = $matches[1];
		} elseif ( preg_match( "/^--(?:\\[no-\\])?$p_name/", $token, $matches ) ) {
			$param['name'] = $matches[1];

$value = substr( $token, strlen( $matches[0] ) );

// substr returns false <= PHP 5.6, and '' PHP 7+
			if ( false === $value || '' === $value ) {
				$param['type'] = 'flag';
			} else {
				$param['type'] = 'assoc';

list( $param['value']['optional'], $value ) = self::is_optional( $value );

if ( preg_match( "/^=<$p_value>$/", $value, $matches ) ) {
					$param['value']['name'] = $matches[1];
				} else {
					$param = [
						'type' => 'unknown',
					];
				}
			}
		} else {
			$param['type'] = 'unknown';
		}

return $param;
	}

/**
	 * An optional parameter is surrounded by square brackets.
	 *
	 * @param string $token
	 * @return array
	 */
	private static function is_optional( $token ) {
		if ( '[' === substr( $token, 0, 1 ) && ']' === substr( $token, -1 ) ) {
			return [ true, substr( $token, 1, -1 ) ];
		}

return [ false, $token ];
	}

/**
	 * A repeating parameter is followed by an ellipsis.
	 *
	 * @param string $token
	 * @return array
	 */
	private static function is_repeating( $token ) {
		if ( '...' === substr( $token, -3 ) ) {
			return [ true, substr( $token, 0, -3 ) ];
		}

return [ false, $token ];
	}
}
<?php

namespace WP_CLI\Context;

use WP_CLI;
use WP_CLI\Context;

/**
 * Context which simulates a frontend request.
 */
final class Frontend implements Context {

/**
	 * Process the context to set up the environment correctly.
	 *
	 * @param array $config Associative array of configuration data.
	 *
	 * @return void
	 */
	public function process( $config ) {
		// TODO: Frontend context needs to be simulated here.
	}
}
<?php

namespace WP_CLI\Context;

use WP_CLI;
use WP_CLI\Context;
use WP_Session_Tokens;

/**
 * Context which simulates the administrator backend.
 */
final class Admin implements Context {

/**
	 * Process the context to set up the environment correctly.
	 *
	 * @param array $config Associative array of configuration data.
	 * @return void
	 */
	public function process( $config ) {
		if ( defined( 'WP_ADMIN' ) ) {
			if ( ! WP_ADMIN ) {
				WP_CLI::warning( 'Could not fake admin request.' );
			}

return;
		}

WP_CLI::debug( 'Faking an admin request', Context::DEBUG_GROUP );

// Define `WP_ADMIN` as being true. This causes the helper method
		// `is_admin()` to return true as well.
		define( 'WP_ADMIN', true ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedConstantFound

// Set a fake entry point to ensure wp-includes/vars.php does not throw
		// notices/errors. This will be reflected in the global `$pagenow`
		// variable being set to 'wp-cli-fake-admin-file.php'.
		$_SERVER['PHP_SELF'] = '/wp-admin/wp-cli-fake-admin-file.php';

// Bootstrap the WordPress administration area.
		WP_CLI::add_wp_hook(
			'admin_init',
			function () {
				global $wp_db_version, $_wp_submenu_nopriv;

// Make sure we don't trigger a DB upgrade as that tries to redirect
				// the page.
				$wp_db_version = (int) get_option( 'db_version' ); // phpcs:ignore WordPress.WP.GlobalVariablesOverride.Prohibited

// Ensure WP does not iterate over an undefined variable in
				// `user_can_access_admin_page()`.
				if ( ! isset( $_wp_submenu_nopriv ) ) {
					$_wp_submenu_nopriv = []; // phpcs:ignore WordPress.WP.GlobalVariablesOverride.Prohibited
				}

$this->log_in_as_admin_user();

require_once ABSPATH . 'wp-admin/admin.php';
			},
			0
		);
	}

/**
	 * Ensure the current request is done under a logged-in administrator
	 * account.
	 *
	 * A lot of premium plugins/themes have their custom update routines locked
	 * behind an is_admin() call.
	 *
	 * @return void
	 */
	private function log_in_as_admin_user() {
		// TODO: Add logic to find an administrator user.
		$admin_user_id = 1;

wp_set_current_user( $admin_user_id );

$expiration = time() + DAY_IN_SECONDS;
		$manager    = WP_Session_Tokens::get_instance( $admin_user_id );
		$token      = $manager->create( $expiration );

$_COOKIE[ AUTH_COOKIE ] = wp_generate_auth_cookie(
			$admin_user_id,
			$expiration,
			'auth',
			$token
		);

$_COOKIE[ SECURE_AUTH_COOKIE ] = wp_generate_auth_cookie(
			$admin_user_id,
			$expiration,
			'secure_auth',
			$token
		);
	}
}
<?php

namespace WP_CLI\Context;

use WP_CLI;
use WP_CLI\Context;

/**
 * Default WP-CLI context.
 */
final class Cli implements Context {

/**
	 * Process the context to set up the environment correctly.
	 *
	 * @param array $config Associative array of configuration data.
	 *
	 * @return void
	 */
	public function process( $config ) {
		// Nothing needs to be done for now, as this is the default.
	}
}
<?php

namespace WP_CLI\Context;

use WP_CLI;
use WP_CLI\Context;
use WP_CLI\ContextManager;

/**
 * Context which switches to other contexts automatically based on conditions.
 */
final class Auto implements Context {

/**
	 * Array of commands to intercept.
	 *
	 * @var array<array>
	 */
	const COMMANDS_TO_RUN_AS_ADMIN = [
		[ 'plugin' ],
		[ 'theme' ],
	];

/**
	 * Context manager instance to use.
	 *
	 * @var ContextManager
	 */
	private $context_manager;

/**
	 * Instantiate an Auto object.
	 *
	 * @param ContextManager $context_manager Context manager instance to use.
	 */
	public function __construct( ContextManager $context_manager ) {
		$this->context_manager = $context_manager;
	}

/**
	 * Process the context to set up the environment correctly.
	 *
	 * @param array $config Associative array of configuration data.
	 * @return void
	 * @throws WP_CLI\ExitException If an invalid context was deduced.
	 */
	public function process( $config ) {
		$config['context'] = $this->deduce_best_context();

$this->context_manager->switch_context( $config );
	}

/**
	 * Deduce the best context to run the current command in.
	 *
	 * @return string Context to use.
	 */
	private function deduce_best_context() {
		if ( $this->is_command_to_run_as_admin() ) {
			return Context::ADMIN;
		}

return Context::CLI;
	}

/**
	 * Check whether the current WP-CLI command is amongst those we want to
	 * run as admin.
	 *
	 * @return bool Whether the current command should be run as admin.
	 */
	private function is_command_to_run_as_admin() {
		$command = WP_CLI::get_runner()->arguments;

foreach ( self::COMMANDS_TO_RUN_AS_ADMIN as $command_to_run_as_admin ) {
			if (
				array_slice( $command, 0, count( $command_to_run_as_admin ) )
				===
				$command_to_run_as_admin
			) {
				WP_CLI::debug(
					'Detected a command to be intercepted: '
					. implode( ' ', $command ),
					Context::DEBUG_GROUP
				);
				return true;
			}
		}

return false;
	}
}
<?php

namespace WP_CLI;

/**
 * Context that can be selected in order to run commands within a properly
 * set-up environment.
 */
interface Context {

const ADMIN    = 'admin';
	const AUTO     = 'auto';
	const CLI      = 'cli';
	const FRONTEND = 'frontend';

/**
	 * Debugging group to use for all context-related debug messages.
	 *
	 * @var string
	 */
	const DEBUG_GROUP = 'context';

namespace WP_CLI;

use cli\Colors;
use cli\Table;
use Iterator;
use Mustangostang\Spyc;
use WP_CLI;

/**
 * Output one or more items in a given format (e.g. table, JSON).
 */
class Formatter {

/**
	 * How the items should be output.
	 *
	 * @var array
	 */
	private $args;

/**
	 * Standard prefix for object fields.
	 *
	 * @var string
	 */
	private $prefix;

/**
	 * @param array $assoc_args Output format arguments.
	 * @param array $fields Fields to display of each item.
	 * @param string|bool $prefix Check if fields have a standard prefix.
	 * False indicates empty prefix.
	 */
	public function __construct( &$assoc_args, $fields = null, $prefix = false ) {
		$format_args = [
			'format' => 'table',
			'fields' => $fields,
			'field'  => null,
		];

foreach ( [ 'format', 'fields', 'field' ] as $key ) {
			if ( isset( $assoc_args[ $key ] ) ) {
				$format_args[ $key ] = $assoc_args[ $key ];
				unset( $assoc_args[ $key ] );
			}
		}

if ( ! is_array( $format_args['fields'] ) ) {
			$format_args['fields'] = explode( ',', $format_args['fields'] );
		}

$format_args['fields'] = array_map( 'trim', $format_args['fields'] );

$this->args   = $format_args;
		$this->prefix = $prefix;
	}

/**
	 * Magic getter for arguments.
	 *
	 * @param string $key
	 * @return mixed
	 */
	public function __get( $key ) {
		return $this->args[ $key ];
	}

/**
	 * Display multiple items according to the output arguments.
	 *
	 * @param array|Iterator $items The items to display.
	 * @param bool|array      $ascii_pre_colorized Optional. A boolean or an array of booleans to pass to `format()` if items in the table are pre-colorized. Default false.
	 */
	public function display_items( $items, $ascii_pre_colorized = false ) {
		if ( $this->args['field'] ) {
			$this->show_single_field( $items, $this->args['field'] );
		} else {
			if ( in_array( $this->args['format'], [ 'csv', 'json', 'table' ], true ) ) {
				$item = is_array( $items ) && ! empty( $items ) ? array_shift( $items ) : false;
				if ( $item && ! empty( $this->args['fields'] ) ) {
					foreach ( $this->args['fields'] as &$field ) {
						$field = $this->find_item_key( $item, $field );
					}
					array_unshift( $items, $item );
				}
			}

if ( in_array( $this->args['format'], [ 'table', 'csv' ], true ) ) {
				if ( $items instanceof Iterator ) {
					$items = Utils\iterator_map( $items, [ $this, 'transform_item_values_to_json' ] );
				} else {
					$items = array_map( [ $this, 'transform_item_values_to_json' ], $items );
				}
			}

$this->format( $items, $ascii_pre_colorized );
		}
	}

/**
	 * Display a single item according to the output arguments.
	 *
	 * @param mixed      $item
	 * @param bool|array $ascii_pre_colorized Optional. A boolean or an array of booleans to pass to `show_multiple_fields()` if the item in the table is pre-colorized. Default false.
	 */
	public function display_item( $item, $ascii_pre_colorized = false ) {
		if ( isset( $this->args['field'] ) ) {
			$item  = (object) $item;
			$key   = $this->find_item_key( $item, $this->args['field'] );
			$value = $item->$key;
			if ( in_array( $this->args['format'], [ 'table', 'csv' ], true ) && ( is_object( $value ) || is_array( $value ) ) ) {
				$value = json_encode( $value );
			}
			WP_CLI::print_value(
				$value,
				[
					'format' => $this->args['format'],
				]
			);
		} else {
			$this->show_multiple_fields( $item, $this->args['format'], $ascii_pre_colorized );
		}
	}

/**
	 * Format items according to arguments.
	 *
	 * @param array      $items
	 * @param bool|array $ascii_pre_colorized Optional. A boolean or an array of booleans to pass to `show_table()` if items in the table are pre-colorized. Default false.
	 */
	private function format( $items, $ascii_pre_colorized = false ) {
		$fields = $this->args['fields'];

switch ( $this->args['format'] ) {
			case 'count':
				if ( ! is_array( $items ) ) {
					$items = iterator_to_array( $items );
				}
				echo count( $items );
				break;

case 'ids':
				if ( ! is_array( $items ) ) {
					$items = iterator_to_array( $items );
				}
				echo implode( ' ', $items );
				break;

case 'table':
				self::show_table( $items, $fields, $ascii_pre_colorized );
				break;

case 'csv':
				Utils\write_csv( STDOUT, $items, $fields );
				break;

case 'json':
			case 'yaml':
				$out = [];
				foreach ( $items as $item ) {
					$out[] = Utils\pick_fields( $item, $fields );
				}

if ( 'json' === $this->args['format'] ) {
					if ( defined( 'JSON_PARTIAL_OUTPUT_ON_ERROR' ) ) {
						// phpcs:ignore PHPCompatibility.Constants.NewConstants.json_partial_output_on_errorFound
						echo json_encode( $out, JSON_PARTIAL_OUTPUT_ON_ERROR );
					} else {
						echo json_encode( $out );
					}
				} elseif ( 'yaml' === $this->args['format'] ) {
					echo Spyc::YAMLDump( $out, 2, 0 );
				}
				break;

default:
				WP_CLI::error( 'Invalid format: ' . $this->args['format'] );
		}
	}

/**
	 * Show a single field from a list of items.
	 *
	 * @param array $items Array of objects to show fields from
	 * @param string $field The field to show
	 */
	private function show_single_field( $items, $field ) {
		$key    = null;
		$values = [];

foreach ( $items as $item ) {
			$item = (object) $item;

if ( null === $key ) {
				$key = $this->find_item_key( $item, $field );
			}

if ( 'json' === $this->args['format'] ) {
				$values[] = $item->$key;
			} else {
				WP_CLI::print_value(
					$item->$key,
					[
						'format' => $this->args['format'],
					]
				);
			}
		}

if ( 'json' === $this->args['format'] ) {
			echo json_encode( $values );
		}
	}

/**
	 * Find an object's key.
	 * If $prefix is set, a key with that prefix will be prioritized.
	 *
	 * @param object $item
	 * @param string $field
	 * @return string
	 */
	private function find_item_key( $item, $field ) {
		foreach ( [ $field, $this->prefix . '_' . $field ] as $maybe_key ) {
			if ( ( is_object( $item ) && ( property_exists( $item, $maybe_key ) || isset( $item->$maybe_key ) ) ) || ( is_array( $item ) && array_key_exists( $maybe_key, $item ) ) ) {
				$key = $maybe_key;
				break;
			}
		}

if ( ! isset( $key ) ) {
			WP_CLI::error( "Invalid field: $field." );
		}

return $key;
	}

/**
	 * Show multiple fields of an object.
	 *
	 * @param object|array $data                Data to display
	 * @param string       $format              Format to display the data in
	 * @param bool|array   $ascii_pre_colorized Optional. A boolean or an array of booleans to pass to `show_table()` if the item in the table is pre-colorized. Default false.
	 */
	private function show_multiple_fields( $data, $format, $ascii_pre_colorized = false ) {

$true_fields = [];
		foreach ( $this->args['fields'] as $field ) {
			$true_fields[] = $this->find_item_key( $data, $field );
		}

foreach ( $data as $key => $value ) {
			if ( ! in_array( $key, $true_fields, true ) ) {
				if ( is_array( $data ) ) {
					unset( $data[ $key ] );
				} elseif ( is_object( $data ) ) {
					unset( $data->$key );
				}
			}
		}

switch ( $format ) {

case 'table':
			case 'csv':
				$rows   = $this->assoc_array_to_rows( $data );
				$fields = [ 'Field', 'Value' ];
				if ( 'table' === $format ) {
					self::show_table( $rows, $fields, $ascii_pre_colorized );
				} elseif ( 'csv' === $format ) {
					Utils\write_csv( STDOUT, $rows, $fields );
				}
				break;

case 'yaml':
			case 'json':
				WP_CLI::print_value(
					$data,
					[
						'format' => $format,
					]
				);
				break;

default:
				WP_CLI::error( 'Invalid format: ' . $format );
				break;

}

/**
	 * Show items in a \cli\Table.
	 *
	 * @param array      $items
	 * @param array      $fields
	 * @param bool|array $ascii_pre_colorized Optional. A boolean or an array of booleans to pass to `Table::setAsciiPreColorized()` if items in the table are pre-colorized. Default false.
	 */
	private static function show_table( $items, $fields, $ascii_pre_colorized = false ) {
		$table = new Table();

$enabled = Colors::shouldColorize();
		if ( $enabled ) {
			Colors::disable( true );
		}

$table->setAsciiPreColorized( $ascii_pre_colorized );
		$table->setHeaders( $fields );

foreach ( $items as $item ) {
			$table->addRow( array_values( Utils\pick_fields( $item, $fields ) ) );
		}

foreach ( $table->getDisplayLines() as $line ) {
			WP_CLI::line( $line );
		}

if ( $enabled ) {
			Colors::enable( true );
		}
	}

/**
	 * Format an associative array as a table.
	 *
	 * @param array     $fields    Fields and values to format
	 * @return array
	 */
	private function assoc_array_to_rows( $fields ) {
		$rows = [];

foreach ( $fields as $field => $value ) {

if ( ! is_string( $value ) ) {
				$value = json_encode( $value );
			}

$rows[] = (object) [
				'Field' => $field,
				'Value' => $value,
			];
		}

return $rows;
	}

/**
	 * Transforms objects and arrays to JSON as necessary
	 *
	 * @param mixed $item
	 * @return mixed
	 */
	public function transform_item_values_to_json( $item ) {
		foreach ( $this->args['fields'] as $field ) {
			$true_field = $this->find_item_key( $item, $field );
			$value      = is_object( $item ) ? $item->$true_field : $item[ $true_field ];
			if ( is_array( $value ) || is_object( $value ) ) {
				if ( is_object( $item ) ) {
					$item->$true_field = json_encode( $value );
				} elseif ( is_array( $item ) ) {
					$item[ $true_field ] = json_encode( $value );
				}
			}
		}
		return $item;
	}

}
<?php

namespace WP_CLI;

use WP_CLI;
use WP_Upgrader_Skin;

/**
 * A Upgrader Skin for WordPress that only generates plain-text
 *
 * @package wp-cli
 */
class UpgraderSkin extends WP_Upgrader_Skin {

use WP_CLI\Compat\FeedbackMethodTrait;

public $api;

public function header() {}
	public function footer() {}
	public function bulk_header() {}
	public function bulk_footer() {}

/**
	 * Show error message.
	 *
	 * @param string $error Error message.
	 *
	 * @return void
	 */
	public function error( $error ) {
		if ( ! $error ) {
			return;
		}

if ( is_string( $error ) && isset( $this->upgrader->strings[ $error ] ) ) {
			$error = $this->upgrader->strings[ $error ];
		}

// TODO: show all errors, not just the first one
		WP_CLI::warning( $error );
	}

/**
	 * Process the feedback collected through the compat indirection.
	 *
	 * @param string $string String to use as feedback message.
	 * @param array $args Array of additional arguments to process.
	 */
	public function process_feedback( $string, $args ) {

if ( 'parent_theme_prepare_install' === $string ) {
			WP_CLI::get_http_cache_manager()->whitelist_package( $this->api->download_link, 'theme', $this->api->slug, $this->api->version );
		}

if ( isset( $this->upgrader->strings[ $string ] ) ) {
			$string = $this->upgrader->strings[ $string ];
		}

if ( ! empty( $args ) && strpos( $string, '%' ) !== false ) {
			$string = vsprintf( $string, $args );
		}

if ( empty( $string ) ) {
			return;
		}

$string = str_replace( '&#8230;', '...', Utils\strip_tags( $string ) );
		$string = html_entity_decode( $string, ENT_QUOTES, get_bloginfo( 'charset' ) );

WP_CLI::log( $string );
	}
}

<?php

namespace WP_CLI\Compat\Min_PHP_5_6;

trait FeedbackMethodTrait {

/**
	 * @param string $string
	 * @param mixed  ...$args Optional text replacements.
	 */
	public function feedback( $string, ...$args ) { // phpcs:ignore PHPCompatibility.LanguageConstructs.NewLanguageConstructs.t_ellipsisFound
		$args_array = [];
		foreach ( $args as $arg ) {
			$args_array[] = $args;
		}

$this->process_feedback( $string, $args );
	}
}
<?php

namespace WP_CLI\Compat\Min_PHP_5_4;

trait FeedbackMethodTrait {

/**
	 * @param string $string
	 */
	public function feedback( $string ) {
		$args = func_get_args();
		$args = array_splice( $args, 1 );

$this->process_feedback( $string, $args );
	}
}
<?php

namespace WP_CLI\Compat;

// phpcs:disable Generic.Files.OneObjectStructurePerFile.MultipleFound,Generic.Classes.DuplicateClassName.Found

if ( PHP_VERSION_ID >= 50600 ) {
	require_once __DIR__ . '/Min_PHP_5_6/FeedbackMethodTrait.php';

trait FeedbackMethodTrait {

use Min_PHP_5_6\FeedbackMethodTrait;
	}

return;
}

require_once __DIR__ . '/Min_PHP_5_4/FeedbackMethodTrait.php';

trait FeedbackMethodTrait {

use Min_PHP_5_4\FeedbackMethodTrait;
}
<?php

namespace WP_CLI\Loggers;

use WP_CLI;

/**
 * Execution logger captures all STDOUT and STDERR writes
 */
class Execution extends Regular {

/**
	 * Captured writes to STDOUT.
	 */
	public $stdout = '';

/**
	 * Captured writes to STDERR.
	 */
	public $stderr = '';

/**
	 * @param bool $in_color Whether or not to Colorize strings.
	 */
	public function __construct( $in_color = false ) { // phpcs:ignore Generic.CodeAnalysis.UselessOverridingMethod.Found -- Provides a default value.
		parent::__construct( $in_color );
	}

/**
	 * Similar to error( $message ), but outputs $message in a red box.
	 *
	 * @param array $message_lines Message to write.
	 */
	public function error_multi_line( $message_lines ) {
		$message = implode( "\n", $message_lines );

$this->write( STDERR, WP_CLI::colorize( "%RError:%n\n$message\n" ) );
		$this->write( STDERR, WP_CLI::colorize( "%R---------%n\n\n" ) );
	}

/**
	 * Write a string to a resource.
	 *
	 * @param resource $handle Commonly STDOUT or STDERR.
	 * @param string $str Message to write.
	 */
	protected function write( $handle, $str ) {
		switch ( $handle ) {
			case STDOUT:
				$this->stdout .= $str;
				break;
			case STDERR:
				$this->stderr .= $str;
				break;
		}
	}

/**
	 * Starts output buffering, using a callback to capture output from `echo`, `print`, `printf` (which write to the output buffer 'php://output' rather than STDOUT).
	 */
	public function ob_start() {
		ob_start( [ $this, 'ob_start_callback' ], 1 );
	}

/**
	 * Callback for `ob_start()`.
	 *
	 * @param string $str String to write.
	 * @return string Returns zero-length string so nothing gets written to the output buffer.
	 */
	public function ob_start_callback( $str ) {
		$this->write( STDOUT, $str );
		return '';
	}

/**
	 * To match `ob_start() above. Does an `ob_end_flush()`.
	 */
	public function ob_end() {
		ob_end_flush();
	}
}
<?php

namespace WP_CLI\Loggers;

use cli\Colors;

/**
 * Default logger for success, warning, error, and standard messages.
 */
class Regular extends Base {

/**
	 * @param bool $in_color Whether or not to Colorize strings.
	 */
	public function __construct( $in_color ) {
		$this->in_color = $in_color;
	}

/**
	 * Write an informational message to STDOUT.
	 *
	 * @param string $message Message to write.
	 */
	public function info( $message ) {
		$this->write( STDOUT, $message . "\n" );
	}

/**
	 * Write a success message, prefixed with "Success: ".
	 *
	 * @param string $message Message to write.
	 */
	public function success( $message ) {
		$this->_line( $message, 'Success', '%G' );
	}

/**
	 * Write a warning message to STDERR, prefixed with "Warning: ".
	 *
	 * @param string $message Message to write.
	 */
	public function warning( $message ) {
		$this->_line( $message, 'Warning', '%C', STDERR );
	}

/**
	 * Write an message to STDERR, prefixed with "Error: ".
	 *
	 * @param string $message Message to write.
	 */
	public function error( $message ) {
		$this->_line( $message, 'Error', '%R', STDERR );
	}

/**
	 * Similar to error( $message ), but outputs $message in a red box.
	 *
	 * @param  array $message_lines Message to write.
	 */
	public function error_multi_line( $message_lines ) {
		// Convert tabs to four spaces, as some shells will output the tabs as variable-length.
		$message_lines = array_map(
			function( $line ) {
				return str_replace( "\t", '    ', $line );
			},
			$message_lines
		);

$longest = max( array_map( 'strlen', $message_lines ) );

// Write an empty line before the message.
		$empty_line = Colors::colorize( '%w%1 ' . str_repeat( ' ', $longest ) . ' %n' );
		$this->write( STDERR, "\n\t$empty_line\n" );

foreach ( $message_lines as $line ) {
			$padding = str_repeat( ' ', $longest - strlen( $line ) );
			$line    = Colors::colorize( "%w%1 $line $padding%n" );
			$this->write( STDERR, "\t$line\n" );
		}

// Write an empty line after the message.
		$this->write( STDERR, "\t$empty_line\n\n" );
	}
}
<?php

namespace WP_CLI\Loggers;

use cli\Colors;
use WP_CLI;
use WP_CLI\Runner;

/**
 * Base logger class
 */
abstract class Base {

protected $in_color = false;

abstract public function info( $message );

abstract public function success( $message );

abstract public function warning( $message );

/**
	 * Retrieve the runner instance from the base CLI object. This facilitates
	 * unit testing, where the WP_CLI instance isn't available
	 *
	 * @return Runner Instance of the runner class
	 */
	protected function get_runner() {
		return WP_CLI::get_runner();
	}

/**
	 * Write a message to STDERR, prefixed with "Debug: ".
	 *
	 * @param string $message Message to write.
	 * @param string|bool $group Organize debug message to a specific group.
	 * Use `false` for no group.
	 */
	public function debug( $message, $group = false ) {
		static $start_time = null;
		if ( null === $start_time ) {
			$start_time = microtime( true );
		}
		$debug = $this->get_runner()->config['debug'];
		if ( ! $debug ) {
			return;
		}
		if ( true !== $debug && $group !== $debug ) {
			return;
		}
		$time   = round( microtime( true ) - ( defined( 'WP_CLI_START_MICROTIME' ) ? WP_CLI_START_MICROTIME : $start_time ), 3 );
		$prefix = 'Debug';
		if ( $group && true === $debug ) {
			$prefix = 'Debug (' . $group . ')';
		}
		$this->_line( "$message ({$time}s)", $prefix, '%B', STDERR );
	}

/**
	 * Write a string to a resource.
	 *
	 * @param resource $handle Commonly STDOUT or STDERR.
	 * @param string $str Message to write.
	 */
	protected function write( $handle, $str ) {
		fwrite( $handle, $str );
	}

/**
	 * Output one line of message to a resource.
	 *
	 * @param string $message Message to write.
	 * @param string $label Prefix message with a label.
	 * @param string $color Colorize label with a given color.
	 * @param resource $handle Resource to write to. Defaults to STDOUT.
	 */
	protected function _line( $message, $label, $color, $handle = STDOUT ) { // phpcs:ignore PSR2.Methods.MethodDeclaration.Underscore -- Used in third party extensions.
		if ( class_exists( 'cli\Colors' ) ) {
			$label = Colors::colorize( "$color$label:%n", $this->in_color );
		} else {
			$label = "$label:";
		}
		$this->write( $handle, "$label $message\n" );
	}

}
<?php

namespace WP_CLI\Loggers;

use WP_CLI;

/**
 * Quiet logger only logs errors.
 */
class Quiet extends Base {

/**
	 * @param bool $in_color Whether or not to Colorize strings.
	 */
	public function __construct( $in_color = false ) {
		$this->in_color = $in_color;
	}

/**
	 * Informational messages aren't logged.
	 *
	 * @param string $message Message to write.
	 */
	public function info( $message ) {
		// Nothing.
	}

/**
	 * Success messages aren't logged.
	 *
	 * @param string $message Message to write.
	 */
	public function success( $message ) {
		// Nothing.
	}

/**
	 * Warning messages aren't logged.
	 *
	 * @param string $message Message to write.
	 */
	public function warning( $message ) {
		// Nothing.
	}

/**
	 * Write an error message to STDERR, prefixed with "Error: ".
	 *
	 * @param string $message Message to write.
	 */
	public function error( $message ) {
		$this->_line( $message, 'Error', '%R', STDERR );
	}

/**
	 * Similar to error( $message ), but outputs $message in a red box.
	 *
	 * @param  array $message_lines Message to write.
	 */
	public function error_multi_line( $message_lines ) {
		$message = implode( "\n", $message_lines );

$this->_line( $message, 'Error', '%R', STDERR );
		$this->_line( '', '---------', '%R', STDERR );
	}
}
<?php

namespace WP_CLI;

use WP_CLI;

/**
 * Context manager to register_context and process different contexts that commands can
 * run within.
 */
final class ContextManager {

/**
	 * Associative array of context implementations.
	 *
	 * @var array<string, Context>
	 */
	private $contexts = [];

/**
	 * Store the current context.
	 *
	 * @var string Current context.
	 */
	private $current_context = Context::CLI;

/**
	 * Register a context with WP-CLI.
	 *
	 * @param string  $name           Name of the context.
	 * @param Context $implementation Implementation of the context.
	 */
	public function register_context( $name, Context $implementation ) {
		$this->contexts[ $name ] = $implementation;
	}

/**
	 * Switch the context in which to run WP-CLI.
	 *
	 * @param array $config Associative array of configuration data.
	 * @return void
	 *
	 * @throws ExitException When an invalid context was requested.
	 */
	public function switch_context( $config ) {
		$context = isset( $config['context'] )
			? $config['context']
			: $this->current_context;

if ( ! array_key_exists( $context, $this->contexts ) ) {
			WP_CLI::error( "Unknown context '{$context}'" );
		}

WP_CLI::debug( "Using context '{$context}'", Context::DEBUG_GROUP );

$this->current_context = $context;
		$this->contexts[ $context ]->process( $config );
	}

/**
	 * Return the current context.
	 *
	 * @return string Current context.
	 */
	public function get_context() {
		return $this->current_context;
	}
}
<?php

namespace WP_CLI;

use WP_CLI;

/**
 * Manage caching with whitelisting
 *
 * @package WP_CLI
 */
class WpHttpCacheManager {

/**
	 * @var array map whitelisted urls to keys and ttls
	 */
	protected $whitelist = [];

/**
	 * @var FileCache
	 */
	protected $cache;

/**
	 * @param FileCache $cache
	 */
	public function __construct( FileCache $cache ) {
		$this->cache = $cache;

// hook into wp http api
		add_filter( 'pre_http_request', [ $this, 'filter_pre_http_request' ], 10, 3 );
		add_filter( 'http_response', [ $this, 'filter_http_response' ], 10, 3 );
	}

/**
	 * short circuit wp http api with cached file
	 */
	public function filter_pre_http_request( $response, $args, $url ) {
		// check if whitelisted
		if ( ! isset( $this->whitelist[ $url ] ) ) {
			return $response;
		}
		// check if downloading
		if ( 'GET' !== $args['method'] || empty( $args['filename'] ) ) {
			return $response;
		}
		// check cache and export to designated location
		$filename = $this->cache->has( $this->whitelist[ $url ]['key'], $this->whitelist[ $url ]['ttl'] );
		if ( $filename ) {
			WP_CLI::log( sprintf( 'Using cached file \'%s\'...', $filename ) );
			if ( copy( $filename, $args['filename'] ) ) {
				// simulate successful download response
				return [
					'response' => [
						'code'    => 200,
						'message' => 'OK',
					],
					'filename' => $args['filename'],
				];
			}

WP_CLI::error( sprintf( 'Error copying cached file %s to %s', $filename, $url ) );
		}
		return $response;
	}

/**
	 * cache wp http api downloads
	 *
	 * @param array $response
	 * @param array $args
	 * @param string $url
	 * @return array
	 */
	public function filter_http_response( $response, $args, $url ) {
		// check if whitelisted
		if ( ! isset( $this->whitelist[ $url ] ) ) {
			return $response;
		}
		// check if downloading
		if ( 'GET' !== $args['method'] || empty( $args['filename'] ) ) {
			return $response;
		}
		// check if download was successful
		if ( is_wp_error( $response ) || 200 !== wp_remote_retrieve_response_code( $response ) ) {
			return $response;
		}
		// cache downloaded file
		$this->cache->import( $this->whitelist[ $url ]['key'], $response['filename'] );
		return $response;
	}

/**
	 * whitelist a package url
	 *
	 * @param string $url
	 * @param string $group   package group (themes, plugins, ...)
	 * @param string $slug    package slug
	 * @param string $version package version
	 * @param int    $ttl
	 */
	public function whitelist_package( $url, $group, $slug, $version, $ttl = null ) {
		$ext = pathinfo( Utils\parse_url( $url, PHP_URL_PATH ), PATHINFO_EXTENSION );
		$key = "$group/$slug-$version.$ext";
		$this->whitelist_url( $url, $key, $ttl );
		wp_update_plugins();
	}

/**
	 * whitelist a url
	 *
	 * @param string $url
	 * @param string $key
	 * @param int    $ttl
	 */
	public function whitelist_url( $url, $key = null, $ttl = null ) {
		$key                     = $key ? : $url;
		$this->whitelist[ $url ] = compact( 'key', 'ttl' );
	}

/**
	 * check if url is whitelisted
	 *
	 * @param string $url
	 * @return bool
	 */
	public function is_whitelisted( $url ) {
		return isset( $this->whitelist[ $url ] );
	}

}
<?php

namespace WP_CLI;

use WP_CLI;
use WP_CLI\Dispatcher;
use WP_CLI\Dispatcher\CompositeCommand;
use WP_CLI\Dispatcher\Subcommand;
use WP_CLI\Fetchers;
use WP_CLI\Iterators\Exception;
use WP_CLI\Loggers;
use WP_CLI\Utils;
use WP_Error;

/**
 * Performs the execution of a command.
 *
 * @property-read string         $global_config_path
 * @property-read string         $project_config_path
 * @property-read array          $config
 * @property-read array          $extra_config
 * @property-read ContextManager $context_manager
 * @property-read string         $alias
 * @property-read array          $aliases
 * @property-read array          $arguments
 * @property-read array          $assoc_args
 * @property-read array          $runtime_config
 * @property-read bool           $colorize
 * @property-read array          $early_invoke
 * @property-read string         $global_config_path_debug
 * @property-read string         $project_config_path_debug
 * @property-read array          $required_files
 *
 * @package WP_CLI
 */
class Runner {

/**
	 * List of byte-order marks (BOMs) to detect.
	 *
	 * @var array<string, string>
	 */
	const BYTE_ORDER_MARKS = [
		'UTF-8'       => "\xEF\xBB\xBF",
		'UTF-16 (BE)' => "\xFE\xFF",
		'UTF-16 (LE)' => "\xFF\xFE",
	];

private $global_config_path;
	private $project_config_path;

private $config;
	private $extra_config;

private $context_manager;

private $alias;

private $aliases;

private $arguments;
	private $assoc_args;
	private $runtime_config;

private $colorize = false;

private $early_invoke = [];

private $global_config_path_debug;

private $project_config_path_debug;

private $required_files;

public function __get( $key ) {
		if ( '_' === $key[0] ) {
			return null;
		}

return $this->$key;
	}

public function register_context_manager( ContextManager $context_manager ) {
		$this->context_manager = $context_manager;
	}

/**
	 * Register a command for early invocation, generally before WordPress loads.
	 *
	 * @param string $when Named execution hook
	 * @param Subcommand $command
	 */
	public function register_early_invoke( $when, $command ) {
		$this->early_invoke[ $when ][] = array_slice( Dispatcher\get_path( $command ), 1 );
	}

/**
	 * Perform the early invocation of a command.
	 *
	 * @param string $when Named execution hook
	 */
	private function do_early_invoke( $when ) {
		if ( ! isset( $this->early_invoke[ $when ] ) ) {
			return;
		}

// Search the value of @when from the command method.
		$real_when = '';
		$r         = $this->find_command_to_run( $this->arguments );
		if ( is_array( $r ) ) {
			list( $command, $final_args, $cmd_path ) = $r;

foreach ( $this->early_invoke as $_when => $_path ) {
				foreach ( $_path as $cmd ) {
					if ( $cmd === $cmd_path ) {
						$real_when = $_when;
					}
				}
			}
		}

foreach ( $this->early_invoke[ $when ] as $path ) {
			if ( $this->cmd_starts_with( $path ) ) {
				if ( empty( $real_when ) || ( $real_when && $real_when === $when ) ) {
					$this->run_command_and_exit();
				}
			}
		}
	}

/**
	 * Get the path to the global configuration YAML file.
	 *
	 * @param bool $create_config_file Optional. If a config file doesn't exist,
	 *                                 should it be created? Defaults to false.
	 *
	 * @return string|false
	 */
	public function get_global_config_path( $create_config_file = false ) {

if ( getenv( 'WP_CLI_CONFIG_PATH' ) ) {
			$config_path                    = getenv( 'WP_CLI_CONFIG_PATH' );
			$this->global_config_path_debug = 'Using global config from WP_CLI_CONFIG_PATH env var: ' . $config_path;
		} else {
			$config_path                    = Utils\get_home_dir() . '/.wp-cli/config.yml';
			$this->global_config_path_debug = 'Using default global config: ' . $config_path;
		}

// If global config doesn't exist create one.
		if ( true === $create_config_file && ! file_exists( $config_path ) ) {
			$this->global_config_path_debug = "Default global config doesn't exist, creating one in {$config_path}";
			Process::create( Utils\esc_cmd( 'touch %s', $config_path ) )->run();
		}

if ( is_readable( $config_path ) ) {
			return $config_path;
		}

$this->global_config_path_debug = 'No readable global config found';

return false;
	}

/**
	 * Get the path to the project-specific configuration
	 * YAML file.
	 * wp-cli.local.yml takes priority over wp-cli.yml.
	 *
	 * @return string|false
	 */
	public function get_project_config_path() {
		$config_files = [
			'wp-cli.local.yml',
			'wp-cli.yml',
		];

// Stop looking upward when we find we have emerged from a subdirectory
		// installation into a parent installation
		$project_config_path = Utils\find_file_upward(
			$config_files,
			getcwd(),
			static function ( $dir ) {
				static $wp_load_count = 0;
				$wp_load_path         = $dir . DIRECTORY_SEPARATOR . 'wp-load.php';
				if ( file_exists( $wp_load_path ) ) {
					++ $wp_load_count;
				}
				return $wp_load_count > 1;
			}
		);

$this->project_config_path_debug = 'No project config found';

if ( ! empty( $project_config_path ) ) {
			$this->project_config_path_debug = 'Using project config: ' . $project_config_path;
		}

return $project_config_path;
	}

/**
	 * Get the path to the packages directory
	 *
	 * @return string
	 */
	public function get_packages_dir_path() {
		if ( getenv( 'WP_CLI_PACKAGES_DIR' ) ) {
			$packages_dir = Utils\trailingslashit( getenv( 'WP_CLI_PACKAGES_DIR' ) );
		} else {
			$packages_dir = Utils\get_home_dir() . '/.wp-cli/packages/';
		}
		return $packages_dir;
	}

/**
	 * Attempts to find the path to the WP installation inside index.php
	 *
	 * @param string $index_path
	 * @return string|false
	 */
	private static function extract_subdir_path( $index_path ) {
		$index_code = file_get_contents( $index_path );

if ( ! preg_match( '|^\s*require\s*\(?\s*(.+?)/wp-blog-header\.php([\'"])|m', $index_code, $matches ) ) {
			return false;
		}

$wp_path_src = $matches[1] . $matches[2];
		$wp_path_src = Utils\replace_path_consts( $wp_path_src, $index_path );

$wp_path = eval( "return $wp_path_src;" ); // phpcs:ignore Squiz.PHP.Eval.Discouraged

if ( ! Utils\is_path_absolute( $wp_path ) ) {
			$wp_path = dirname( $index_path ) . "/$wp_path";
		}

return $wp_path;
	}

/**
	 * Find the directory that contains the WordPress files.
	 * Defaults to the current working dir.
	 *
	 * @return string An absolute path
	 */
	private function find_wp_root() {
		if ( ! empty( $this->config['path'] ) ) {
			$path = $this->config['path'];
			if ( ! Utils\is_path_absolute( $path ) ) {
				$path = getcwd() . '/' . $path;
			}

return $path;
		}

if ( $this->cmd_starts_with( [ 'core', 'download' ] ) ) {
			return getcwd();
		}

$dir = getcwd();

while ( is_readable( $dir ) ) {
			if ( file_exists( "$dir/wp-load.php" ) ) {
				return $dir;
			}

if ( file_exists( "$dir/index.php" ) ) {
				$path = self::extract_subdir_path( "$dir/index.php" );
				if ( ! empty( $path ) ) {
					return $path;
				}
			}

$parent_dir = dirname( $dir );
			if ( empty( $parent_dir ) || $parent_dir === $dir ) {
				break;
			}
			$dir = $parent_dir;
		}
	}

/**
	 * Set WordPress root as a given path.
	 *
	 * @param string $path
	 */
	private static function set_wp_root( $path ) {
		if ( ! defined( 'ABSPATH' ) ) {
			// phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedConstantFound -- Declaring a WP native constant.
			define( 'ABSPATH', Utils\normalize_path( Utils\trailingslashit( $path ) ) );
		} elseif ( ! is_null( $path ) ) {
			WP_CLI::error_multi_line(
				[
					'The --path parameter cannot be used when ABSPATH is already defined elsewhere',
					'ABSPATH is defined as: "' . ABSPATH . '"',
				]
			);
		}
		WP_CLI::debug( 'ABSPATH defined: ' . ABSPATH, 'bootstrap' );

$_SERVER['DOCUMENT_ROOT'] = realpath( $path );
	}

/**
	 * Guess which URL context WP-CLI has been invoked under.
	 *
	 * @param array $assoc_args
	 * @return string|false
	 */
	private static function guess_url( $assoc_args ) {
		if ( isset( $assoc_args['blog'] ) ) {
			$assoc_args['url'] = $assoc_args['blog'];
		}

if ( isset( $assoc_args['url'] ) ) {
			$url = $assoc_args['url'];

if ( true === $url ) {
				WP_CLI::warning( 'The --url parameter expects a value.' );
			}

return $url;
		}

return false;
	}

private function cmd_starts_with( $prefix ) {
		return array_slice( $this->arguments, 0, count( $prefix ) ) === $prefix;
	}

/**
	 * Given positional arguments, find the command to execute.
	 *
	 * @param array $args
	 * @return array|string Command, args, and path on success; error message on failure
	 */
	public function find_command_to_run( $args ) {
		$command = WP_CLI::get_root_command();

WP_CLI::do_hook( 'find_command_to_run_pre' );

$cmd_path = [];

while ( ! empty( $args ) && $command->can_have_subcommands() ) {
			$cmd_path[] = $args[0];
			$full_name  = implode( ' ', $cmd_path );

$subcommand = $command->find_subcommand( $args );

if ( ! $subcommand ) {
				if ( count( $cmd_path ) > 1 ) {
					$child       = array_pop( $cmd_path );
					$parent_name = implode( ' ', $cmd_path );
					$suggestion  = $this->get_subcommand_suggestion( $child, $command );
					return sprintf(
						"'%s' is not a registered subcommand of '%s'. See 'wp help %s' for available subcommands.%s",
						$child,
						$parent_name,
						$parent_name,
						! empty( $suggestion ) ? PHP_EOL . "Did you mean '{$suggestion}'?" : ''
					);
				}

$suggestion = $this->get_subcommand_suggestion( $full_name, $command );

return sprintf(
					"'%s' is not a registered wp command. See 'wp help' for available commands.%s",
					$full_name,
					! empty( $suggestion ) ? PHP_EOL . "Did you mean '{$suggestion}'?" : ''
				);
			}

if ( $this->is_command_disabled( $subcommand ) ) {
				return sprintf(
					"The '%s' command has been disabled from the config file.",
					$full_name
				);
			}

$command = $subcommand;
		}

return [ $command, $args, $cmd_path ];
	}

/**
	 * Find the WP-CLI command to run given arguments, and invoke it.
	 *
	 * @param array $args        Positional arguments including command name
	 * @param array $assoc_args  Associative arguments for the command.
	 * @param array $options     Configuration options for the function.
	 */
	public function run_command( $args, $assoc_args = [], $options = [] ) {
		WP_CLI::do_hook( 'before_run_command', $args, $assoc_args, $options );

if ( ! empty( $options['back_compat_conversions'] ) ) {
			list( $args, $assoc_args ) = self::back_compat_conversions( $args, $assoc_args );
		}
		$r = $this->find_command_to_run( $args );
		if ( is_string( $r ) ) {
			WP_CLI::error( $r );
		}

list( $command, $final_args, $cmd_path ) = $r;

$name = implode( ' ', $cmd_path );

$extra_args = [];

if ( isset( $this->extra_config[ $name ] ) ) {
			$extra_args = $this->extra_config[ $name ];
		}

WP_CLI::debug( 'Running command: ' . $name, 'bootstrap' );
		try {
			$command->invoke( $final_args, $assoc_args, $extra_args );
		} catch ( Exception $e ) {
			WP_CLI::error( $e->getMessage() );
		}
	}

/**
	 * Show synopsis if the called command is a composite command
	 */
	public function show_synopsis_if_composite_command() {
		$r = $this->find_command_to_run( $this->arguments );
		if ( is_array( $r ) ) {
			list( $command ) = $r;

if ( $command->can_have_subcommands() ) {
				$command->show_usage();
				exit;
			}
		}
	}

private function run_command_and_exit( $help_exit_warning = '' ) {
		$this->show_synopsis_if_composite_command();
		$this->run_command( $this->arguments, $this->assoc_args );
		if ( $this->cmd_starts_with( [ 'help' ] ) ) {
			// Help couldn't find the command so exit with suggestion.
			$suggestion_or_disabled = $this->find_command_to_run( array_slice( $this->arguments, 1 ) );
			if ( is_string( $suggestion_or_disabled ) ) {
				if ( $help_exit_warning ) {
					WP_CLI::warning( $help_exit_warning );
				}
				WP_CLI::error( $suggestion_or_disabled );
			}
			// Should never get here.
		}
		exit;
	}

/**
	 * Perform a command against a remote server over SSH (or a container using
	 * scheme of "docker" or "docker-compose").
	 *
	 * @param string $connection_string Passed connection string.
	 * @return void
	 */
	private function run_ssh_command( $connection_string ) {

WP_CLI::do_hook( 'before_ssh' );

$bits = Utils\parse_ssh_url( $connection_string );

$pre_cmd = getenv( 'WP_CLI_SSH_PRE_CMD' );
		if ( $pre_cmd ) {
			$message = WP_CLI::warning( "WP_CLI_SSH_PRE_CMD found, executing the following command(s) on the remote machine:\n $pre_cmd" );

WP_CLI::log( $message );

$pre_cmd = rtrim( $pre_cmd, ';' ) . '; ';
		}
		if ( ! empty( $bits['path'] ) ) {
			$pre_cmd .= 'cd ' . escapeshellarg( $bits['path'] ) . '; ';
		}

$env_vars = '';
		if ( getenv( 'WP_CLI_STRICT_ARGS_MODE' ) ) {
			$env_vars .= 'WP_CLI_STRICT_ARGS_MODE=1 ';
		}

$wp_binary = 'wp';
		$wp_args   = array_slice( $GLOBALS['argv'], 1 );

if ( $this->alias && ! empty( $wp_args[0] ) && $this->alias === $wp_args[0] ) {
			array_shift( $wp_args );
			$runtime_alias = [];
			foreach ( $this->aliases[ $this->alias ] as $key => $value ) {
				if ( 'ssh' === $key ) {
					continue;
				}
				$runtime_alias[ $key ] = $value;
			}
			if ( ! empty( $runtime_alias ) ) {
				$encoded_alias = json_encode(
					[
						$this->alias => $runtime_alias,
					]
				);
				$wp_binary     = "WP_CLI_RUNTIME_ALIAS='{$encoded_alias}' {$wp_binary} {$this->alias}";
			}
		}

foreach ( $wp_args as $k => $v ) {
			if ( preg_match( '#--ssh=#', $v ) ) {
				unset( $wp_args[ $k ] );
			}
		}

$wp_command      = $pre_cmd . $env_vars . $wp_binary . ' ' . implode( ' ', array_map( 'escapeshellarg', $wp_args ) );
		$escaped_command = $this->generate_ssh_command( $bits, $wp_command );

passthru( $escaped_command, $exit_code );
		if ( 255 === $exit_code ) {
			WP_CLI::error( 'Cannot connect over SSH using provided configuration.', 255 );
		} else {
			exit( $exit_code );
		}
	}

/**
	 * Generate a shell command from the parsed connection string.
	 *
	 * @param array  $bits       Parsed connection string.
	 * @param string $wp_command WP-CLI command to run.
	 * @return string
	 */
	private function generate_ssh_command( $bits, $wp_command ) {
		$escaped_command = '';

// Set default values.
		foreach ( [ 'scheme', 'user', 'host', 'port', 'path', 'key' ] as $bit ) {
			if ( ! isset( $bits[ $bit ] ) ) {
				$bits[ $bit ] = null;
			}

WP_CLI::debug( 'SSH ' . $bit . ': ' . $bits[ $bit ], 'bootstrap' );
		}

$is_tty = function_exists( 'posix_isatty' ) && posix_isatty( STDOUT );

if ( 'docker' === $bits['scheme'] ) {
			$command = 'docker exec %s%s%s sh -c %s';

$escaped_command = sprintf(
				$command,
				$bits['user'] ? '--user ' . escapeshellarg( $bits['user'] ) . ' ' : '',
				$is_tty ? '-t ' : '',
				escapeshellarg( $bits['host'] ),
				escapeshellarg( $wp_command )
			);
		}

if ( 'docker-compose' === $bits['scheme'] ) {
			$command = 'docker-compose exec %s%s%s sh -c %s';

$escaped_command = sprintf(
				$command,
				$bits['user'] ? '--user ' . escapeshellarg( $bits['user'] ) . ' ' : '',
				$is_tty ? '' : '-T ',
				escapeshellarg( $bits['host'] ),
				escapeshellarg( $wp_command )
			);
		}

// Vagrant ssh-config.
		if ( 'vagrant' === $bits['scheme'] ) {
			$cache     = WP_CLI::get_cache();
			$cache_key = 'vagrant:' . $this->project_config_path;
			if ( $cache->has( $cache_key ) ) {
				$cached = $cache->read( $cache_key );
				$values = json_decode( $cached, true );
			} else {
				$ssh_config = shell_exec( 'vagrant ssh-config 2>/dev/null' );
				if ( preg_match_all( '#\s*(?<NAME>[a-zA-Z]+)\s(?<VALUE>.+)\s*#', $ssh_config, $matches ) ) {
					$values = array_combine( $matches['NAME'], $matches['VALUE'] );
					$cache->write( $cache_key, json_encode( $values ) );
				}
			}

if ( empty( $bits['host'] ) || ( isset( $values['Host'] ) && $bits['host'] === $values['Host'] ) ) {
				$bits['scheme'] = 'ssh';
				$bits['host']   = $values['HostName'];
				$bits['port']   = $values['Port'];
				$bits['user']   = $values['User'];
				$bits['key']    = $values['IdentityFile'];
			}

// If we could not resolve the bits still, fallback to just `vagrant ssh`
			if ( 'vagrant' === $bits['scheme'] ) {
				$command = 'vagrant ssh -c %s %s';

$escaped_command = sprintf(
					$command,
					escapeshellarg( $wp_command ),
					escapeshellarg( $bits['host'] )
				);
			}
		}

// Default scheme is SSH.
		if ( 'ssh' === $bits['scheme'] || null === $bits['scheme'] ) {
			$command = 'ssh -q %s %s %s';

if ( $bits['user'] ) {
				$bits['host'] = $bits['user'] . '@' . $bits['host'];
			}

$command_args = [
				$bits['port'] ? '-p ' . (int) $bits['port'] . ' ' : '',
				$bits['key'] ? sprintf( '-i %s', $bits['key'] ) : '',
				$is_tty ? '-t' : '-T',
			];

$escaped_command = sprintf(
				$command,
				implode( ' ', array_filter( $command_args ) ),
				escapeshellarg( $bits['host'] ),
				escapeshellarg( $wp_command )
			);
		}

WP_CLI::debug( 'Running SSH command: ' . $escaped_command, 'bootstrap' );

return $escaped_command;
	}

/**
	 * Check whether a given command is disabled by the config.
	 *
	 * @return bool
	 */
	public function is_command_disabled( $command ) {
		$path = implode( ' ', array_slice( Dispatcher\get_path( $command ), 1 ) );
		return in_array( $path, $this->config['disabled_commands'], true );
	}

/**
	 * Returns wp-config.php code, skipping the loading of wp-settings.php.
	 *
	 * @param string $wp_config_path Optional. Config file path. If left empty, it tries to
	 *                               locate the wp-config.php file automatically.
	 *
	 * @return string
	 */
	public function get_wp_config_code( $wp_config_path = '' ) {
		if ( empty( $wp_config_path ) ) {
			$wp_config_path = Utils\locate_wp_config();
		}

$wp_config_code = explode( "\n", file_get_contents( $wp_config_path ) );

// Detect and strip byte-order marks (BOMs).
		// This code assumes they can only be found on the first line.
		foreach ( self::BYTE_ORDER_MARKS as $bom_name => $bom_sequence ) {
			WP_CLI::debug( "Looking for {$bom_name} BOM", 'bootstrap' );

$length = strlen( $bom_sequence );

while ( substr( $wp_config_code[0], 0, $length ) === $bom_sequence ) {
				WP_CLI::warning(
					"{$bom_name} byte-order mark (BOM) detected in wp-config.php file, stripping it for parsing."
				);

$wp_config_code[0] = substr( $wp_config_code[0], $length );
			}
		}

$found_wp_settings = false;

$lines_to_run = [];

foreach ( $wp_config_code as $line ) {
			if ( preg_match( '/^\s*require.+wp-settings\.php/', $line ) ) {
				$found_wp_settings = true;
				continue;
			}

$lines_to_run[] = $line;
		}

if ( ! $found_wp_settings ) {
			WP_CLI::error( 'Strange wp-config.php file: wp-settings.php is not loaded directly.' );
		}

$source = implode( "\n", $lines_to_run );
		$source = Utils\replace_path_consts( $source, $wp_config_path );
		return preg_replace( '|^\s*\<\?php\s*|', '', $source );
	}

/**
	 * Transparently convert deprecated syntaxes
	 *
	 * @param array $args
	 * @param array $assoc_args
	 * @return array
	 */
	private static function back_compat_conversions( $args, $assoc_args ) {
		$top_level_aliases = [
			'sql'  => 'db',
			'blog' => 'site',
		];
		if ( count( $args ) > 0 ) {
			foreach ( $top_level_aliases as $old => $new ) {
				if ( $old === $args[0] ) {
					$args[0] = $new;
					break;
				}
			}
		}

// *-meta  ->  * meta
		if ( ! empty( $args ) && preg_match( '/(post|comment|user|network)-meta/', $args[0], $matches ) ) {
			array_shift( $args );
			array_unshift( $args, 'meta' );
			array_unshift( $args, $matches[1] );
		}

// cli aliases  ->  cli alias list
		if ( [ 'cli', 'aliases' ] === array_slice( $args, 0, 2 ) ) {
			list( $args[0], $args[1], $args[2] ) = [ 'cli', 'alias', 'list' ];
		}

// core (multsite-)install --admin_name=  ->  --admin_user=
		if ( count( $args ) > 0 && 'core' === $args[0] && isset( $assoc_args['admin_name'] ) ) {
			$assoc_args['admin_user'] = $assoc_args['admin_name'];
			unset( $assoc_args['admin_name'] );
		}

// core config  ->  config create
		if ( [ 'core', 'config' ] === array_slice( $args, 0, 2 ) ) {
			list( $args[0], $args[1] ) = [ 'config', 'create' ];
		}
		// core language  ->  language core
		if ( [ 'core', 'language' ] === array_slice( $args, 0, 2 ) ) {
			list( $args[0], $args[1] ) = [ 'language', 'core' ];
		}

// checksum core  ->  core verify-checksums
		if ( [ 'checksum', 'core' ] === array_slice( $args, 0, 2 ) ) {
			list( $args[0], $args[1] ) = [ 'core', 'verify-checksums' ];
		}

// checksum plugin  ->  plugin verify-checksums
		if ( [ 'checksum', 'plugin' ] === array_slice( $args, 0, 2 ) ) {
			list( $args[0], $args[1] ) = [ 'plugin', 'verify-checksums' ];
		}

// site create --site_id=  ->  site create --network_id=
		if ( count( $args ) >= 2 && 'site' === $args[0] && 'create' === $args[1] && isset( $assoc_args['site_id'] ) ) {
			$assoc_args['network_id'] = $assoc_args['site_id'];
			unset( $assoc_args['site_id'] );
		}

// {plugin|theme} update-all  ->  {plugin|theme} update --all
		if ( count( $args ) > 1 && in_array( $args[0], [ 'plugin', 'theme' ], true )
			&& 'update-all' === $args[1]
		) {
			$args[1]           = 'update';
			$assoc_args['all'] = true;
		}

// transient delete-expired  ->  transient delete --expired
		if ( count( $args ) > 1 && 'transient' === $args[0] && 'delete-expired' === $args[1] ) {
			$args[1]               = 'delete';
			$assoc_args['expired'] = true;
		}

// transient delete-all  ->  transient delete --all
		if ( count( $args ) > 1 && 'transient' === $args[0] && 'delete-all' === $args[1] ) {
			$args[1]           = 'delete';
			$assoc_args['all'] = true;
		}

// plugin scaffold  ->  scaffold plugin
		if ( [ 'plugin', 'scaffold' ] === array_slice( $args, 0, 2 ) ) {
			list( $args[0], $args[1] ) = [ $args[1], $args[0] ];
		}

// foo --help  ->  help foo
		if ( isset( $assoc_args['help'] ) ) {
			array_unshift( $args, 'help' );
			unset( $assoc_args['help'] );
		}

// {post|user} list --ids  ->  {post|user} list --format=ids
		if ( count( $args ) > 1 && in_array( $args[0], [ 'post', 'user' ], true )
			&& 'list' === $args[1]
			&& isset( $assoc_args['ids'] )
		) {
			$assoc_args['format'] = 'ids';
			unset( $assoc_args['ids'] );
		}

// --json  ->  --format=json
		if ( isset( $assoc_args['json'] ) ) {
			$assoc_args['format'] = 'json';
			unset( $assoc_args['json'] );
		}

// --{version|info}  ->  cli {version|info}
		if ( empty( $args ) ) {
			$special_flags = [ 'version', 'info' ];
			foreach ( $special_flags as $key ) {
				if ( isset( $assoc_args[ $key ] ) ) {
					$args = [ 'cli', $key ];
					unset( $assoc_args[ $key ] );
					break;
				}
			}
		}

// (post|comment|site|term) url  --> (post|comment|site|term) list --*__in --field=url
		if ( count( $args ) >= 2 && in_array( $args[0], [ 'post', 'comment', 'site', 'term' ], true ) && 'url' === $args[1] ) {
			switch ( $args[0] ) {
				case 'post':
					$post_ids                = array_slice( $args, 2 );
					$args                    = [ 'post', 'list' ];
					$assoc_args['post__in']  = implode( ',', $post_ids );
					$assoc_args['post_type'] = 'any';
					$assoc_args['orderby']   = 'post__in';
					$assoc_args['field']     = 'url';
					break;
				case 'comment':
					$comment_ids               = array_slice( $args, 2 );
					$args                      = [ 'comment', 'list' ];
					$assoc_args['comment__in'] = implode( ',', $comment_ids );
					$assoc_args['orderby']     = 'comment__in';
					$assoc_args['field']       = 'url';
					break;
				case 'site':
					$site_ids               = array_slice( $args, 2 );
					$args                   = [ 'site', 'list' ];
					$assoc_args['site__in'] = implode( ',', $site_ids );
					$assoc_args['field']    = 'url';
					break;
				case 'term':
					$taxonomy = '';
					if ( isset( $args[2] ) ) {
						$taxonomy = $args[2];
					}
					$term_ids              = array_slice( $args, 3 );
					$args                  = [ 'term', 'list', $taxonomy ];
					$assoc_args['include'] = implode( ',', $term_ids );
					$assoc_args['orderby'] = 'include';
					$assoc_args['field']   = 'url';
					break;
			}
		}

// config get --[global|constant]=<global|constant> --> config get <name> --type=constant|variable
		// config get --> config list
		if ( count( $args ) === 2
			&& 'config' === $args[0]
			&& 'get' === $args[1] ) {
			if ( isset( $assoc_args['global'] ) ) {
				$name = $assoc_args['global'];
				$type = 'variable';
				unset( $assoc_args['global'] );
			} elseif ( isset( $assoc_args['constant'] ) ) {
				$name = $assoc_args['constant'];
				$type = 'constant';
				unset( $assoc_args['constant'] );
			}
			if ( ! empty( $name ) && ! empty( $type ) ) {
				$args[]             = $name;
				$assoc_args['type'] = $type;
			} else {
				// We had a 'config get' without a '<name>', so assume 'list' was wanted.
				$args[1] = 'list';
			}
		}

return [ $args, $assoc_args ];
	}

/**
	 * Whether or not the output should be rendered in color
	 *
	 * @return bool
	 */
	public function in_color() {
		return $this->colorize;
	}

public function init_colorization() {
		if ( 'auto' === $this->config['color'] ) {
			$this->colorize = ( ! Utils\isPiped() && ! Utils\is_windows() );
		} else {
			$this->colorize = $this->config['color'];
		}
	}

public function init_logger() {
		if ( $this->config['quiet'] ) {
			$logger = new Loggers\Quiet( $this->in_color() );
		} else {
			$logger = new Loggers\Regular( $this->in_color() );
		}

WP_CLI::set_logger( $logger );
	}

public function get_required_files() {
		return $this->required_files;
	}

/**
	 * Do WordPress core files exist?
	 *
	 * @return bool
	 */
	private function wp_exists() {
		return file_exists( ABSPATH . 'wp-includes/version.php' );
	}

/**
	 * Are WordPress core files readable?
	 *
	 * @return bool
	 */
	private function wp_is_readable() {
		return is_readable( ABSPATH . 'wp-includes/version.php' );
	}

private function check_wp_version() {
		$wp_exists      = $this->wp_exists();
		$wp_is_readable = $this->wp_is_readable();
		if ( ! $wp_exists || ! $wp_is_readable ) {
			$this->show_synopsis_if_composite_command();
			// If the command doesn't exist use as error.
			$args                   = $this->cmd_starts_with( [ 'help' ] ) ? array_slice( $this->arguments, 1 ) : $this->arguments;
			$suggestion_or_disabled = $this->find_command_to_run( $args );
			if ( is_string( $suggestion_or_disabled ) ) {
				if ( ! preg_match( '/disabled from the config file.$/', $suggestion_or_disabled ) ) {
					WP_CLI::warning( "No WordPress installation found. If the command '" . implode( ' ', $args ) . "' is in a plugin or theme, pass --path=`path/to/wordpress`." );
				}
				WP_CLI::error( $suggestion_or_disabled );
			}

if ( $wp_exists && ! $wp_is_readable ) {
				WP_CLI::error(
					'It seems, the WordPress core files do not have the proper file permissions.'
				);
			}
			WP_CLI::error(
				"This does not seem to be a WordPress installation.\n" .
				'Pass --path=`path/to/wordpress` or run `wp core download`.'
			);
		}

global $wp_version;
		include ABSPATH . 'wp-includes/version.php';

$minimum_version = '3.7';

if ( version_compare( $wp_version, $minimum_version, '<' ) ) {
			WP_CLI::error(
				"WP-CLI needs WordPress $minimum_version or later to work properly. " .
				"The version currently installed is $wp_version.\n" .
				'Try running `wp core download --force`.'
			);
		}
	}

public function init_config() {
		$configurator = WP_CLI::get_configurator();

$argv = array_slice( $GLOBALS['argv'], 1 );

$this->alias = null;
		if ( ! empty( $argv[0] ) && preg_match( '#' . Configurator::ALIAS_REGEX . '#', $argv[0], $matches ) ) {
			$this->alias = array_shift( $argv );
		}

// File config
		{
			$this->global_config_path  = $this->get_global_config_path();
			$this->project_config_path = $this->get_project_config_path();

$configurator->merge_yml( $this->global_config_path, $this->alias );
			$config                         = $configurator->to_array();
			$this->required_files['global'] = $config[0]['require'];
			$configurator->merge_yml( $this->project_config_path, $this->alias );
			$config                          = $configurator->to_array();
			$this->required_files['project'] = $config[0]['require'];
		}

// Runtime config and args
		{
			list( $args, $assoc_args, $this->runtime_config ) = $configurator->parse_args( $argv );

list( $this->arguments, $this->assoc_args ) = self::back_compat_conversions(
				$args,
				$assoc_args
			);

$configurator->merge_array( $this->runtime_config );
		}

list( $this->config, $this->extra_config ) = $configurator->to_array();
		$this->aliases                             = $configurator->get_aliases();
		if ( count( $this->aliases ) && ! isset( $this->aliases['@all'] ) ) {
			$this->aliases         = array_reverse( $this->aliases );
			$this->aliases['@all'] = 'Run command against every registered alias.';
			$this->aliases         = array_reverse( $this->aliases );
		}
		$this->required_files['runtime'] = $this->config['require'];
	}

private function check_root() {
		if ( $this->config['allow-root'] || getenv( 'WP_CLI_ALLOW_ROOT' ) ) {
			return; # they're aware of the risks!
		}
		if ( count( $this->arguments ) >= 2 && 'cli' === $this->arguments[0] && in_array( $this->arguments[1], [ 'update', 'info' ], true ) ) {
			return; # make it easier to update root-owned copies
		}
		if ( ! function_exists( 'posix_geteuid' ) ) {
			return; # posix functions not available
		}
		if ( posix_geteuid() !== 0 ) {
			return; # not root
		}

WP_CLI::error(
			"YIKES! It looks like you're running this as root. You probably meant to " .
			"run this as the user that your WordPress installation exists under.\n" .
			"\n" .
			"If you REALLY mean to run this as root, we won't stop you, but just " .
			'bear in mind that any code on this site will then have full control of ' .
			"your server, making it quite DANGEROUS.\n" .
			"\n" .
			"If you'd like to continue as root, please run this again, adding this " .
			"flag:  --allow-root\n" .
			"\n" .
			"If you'd like to run it as the user that this site is under, you can " .
			"run the following to become the respective user:\n" .
			"\n" .
			"    sudo -u USER -i -- wp <command>\n" .
			"\n"
		);
	}

private function run_alias_group( $aliases ) {
		Utils\check_proc_available( 'group alias' );

$php_bin = escapeshellarg( Utils\get_php_binary() );

$script_path = $GLOBALS['argv'][0];

if ( getenv( 'WP_CLI_CONFIG_PATH' ) ) {
			$config_path = getenv( 'WP_CLI_CONFIG_PATH' );
		} else {
			$config_path = Utils\get_home_dir() . '/.wp-cli/config.yml';
		}
		$config_path = escapeshellarg( $config_path );

foreach ( $aliases as $alias ) {
			WP_CLI::log( $alias );
			$args           = implode( ' ', array_map( 'escapeshellarg', $this->arguments ) );
			$assoc_args     = Utils\assoc_args_to_str( $this->assoc_args );
			$runtime_config = Utils\assoc_args_to_str( $this->runtime_config );
			$full_command   = "WP_CLI_CONFIG_PATH={$config_path} {$php_bin} {$script_path} {$alias} {$args}{$assoc_args}{$runtime_config}";
			$pipes          = [];
			$proc           = Utils\proc_open_compat( $full_command, [ STDIN, STDOUT, STDERR ], $pipes );
			proc_close( $proc );
		}
	}

private function set_alias( $alias ) {
		$orig_config  = $this->config;
		$alias_config = $this->aliases[ $alias ];
		$this->config = array_merge( $orig_config, $alias_config );
		foreach ( $alias_config as $key => $_ ) {
			if ( isset( $orig_config[ $key ] ) && ! is_null( $orig_config[ $key ] ) ) {
				$this->assoc_args[ $key ] = $orig_config[ $key ];
			}
		}
	}

public function start() {
		// Enable PHP error reporting to stderr if testing. Will need to be re-enabled after WP loads.
		if ( getenv( 'BEHAT_RUN' ) ) {
			$this->enable_error_reporting();
		}

WP_CLI::debug( $this->global_config_path_debug, 'bootstrap' );
		WP_CLI::debug( $this->project_config_path_debug, 'bootstrap' );
		WP_CLI::debug( 'argv: ' . implode( ' ', $GLOBALS['argv'] ), 'bootstrap' );

$this->check_root();
		if ( $this->alias ) {
			if ( '@all' === $this->alias && ! isset( $this->aliases['@all'] ) ) {
				WP_CLI::error( "Cannot use '@all' when no aliases are registered." );
			}

if ( '@all' === $this->alias && is_string( $this->aliases['@all'] ) ) {
				$aliases = array_keys( $this->aliases );
				$k       = array_search( '@all', $aliases, true );
				unset( $aliases[ $k ] );
				$this->run_alias_group( $aliases );
				exit;
			}

if ( ! array_key_exists( $this->alias, $this->aliases ) ) {
				$error_msg  = "Alias '{$this->alias}' not found.";
				$suggestion = Utils\get_suggestion( $this->alias, array_keys( $this->aliases ), $threshold = 2 );
				if ( $suggestion ) {
					$error_msg .= PHP_EOL . "Did you mean '{$suggestion}'?";
				}
				WP_CLI::error( $error_msg );
			}
			// Numerically indexed means a group of aliases
			if ( isset( $this->aliases[ $this->alias ][0] ) ) {
				$group_aliases = $this->aliases[ $this->alias ];
				$all_aliases   = array_keys( $this->aliases );
				$diff          = array_diff( $group_aliases, $all_aliases );
				if ( ! empty( $diff ) ) {
					WP_CLI::error( "Group '{$this->alias}' contains one or more invalid aliases: " . implode( ', ', $diff ) );
				}
				$this->run_alias_group( $group_aliases );
				exit;
			}

$this->set_alias( $this->alias );
		}

if ( empty( $this->arguments ) ) {
			$this->arguments[] = 'help';
		}

// Protect 'cli info' from most of the runtime,
		// except when the command will be run over SSH
		if ( 'cli' === $this->arguments[0] && ! empty( $this->arguments[1] ) && 'info' === $this->arguments[1] && ! $this->config['ssh'] ) {
			$this->run_command_and_exit();
		}

if ( isset( $this->config['http'] ) && ! class_exists( '\WP_REST_CLI\Runner' ) ) {
			WP_CLI::error( "RESTful WP-CLI needs to be installed. Try 'wp package install wp-cli/restful'." );
		}

if ( $this->config['ssh'] ) {
			$this->run_ssh_command( $this->config['ssh'] );
			return;
		}

// Handle --path parameter
		self::set_wp_root( $this->find_wp_root() );

// First try at showing man page - if help command and either haven't found 'version.php' or 'wp-config.php' (so won't be loading WP & adding commands) or help on subcommand.
		if ( $this->cmd_starts_with( [ 'help' ] )
			&& ( ! $this->wp_exists()
				|| ! Utils\locate_wp_config()
				|| count( $this->arguments ) > 2
			) ) {
			$this->auto_check_update();
			$this->run_command( $this->arguments, $this->assoc_args );
			// Help didn't exit so failed to find the command at this stage.
		}

// Handle --url parameter
		$url = self::guess_url( $this->config );
		if ( $url ) {
			WP_CLI::set_url( $url );
		}

$this->do_early_invoke( 'before_wp_load' );

$this->check_wp_version();

if ( $this->cmd_starts_with( [ 'config', 'create' ] ) ) {
			$this->run_command_and_exit();
		}

if ( ! Utils\locate_wp_config() ) {
			WP_CLI::error(
				"'wp-config.php' not found.\n" .
				'Either create one manually or use `wp config create`.'
			);
		}

/*
		 * Set the MySQLi error reporting off because WordPress handles its own.
		 * This is due to the default value change from `MYSQLI_REPORT_OFF`
		 * to `MYSQLI_REPORT_ERROR|MYSQLI_REPORT_STRICT` in PHP 8.1.
		 */
		if ( function_exists( 'mysqli_report' ) ) {
			mysqli_report( 0 ); // phpcs:ignore WordPress.DB.RestrictedFunctions.mysql_mysqli_report
		}

// phpcs:disable WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedConstantFound -- Declaring WP native constants.

if ( $this->cmd_starts_with( [ 'core', 'is-installed' ] )
			|| $this->cmd_starts_with( [ 'core', 'update-db' ] ) ) {
			define( 'WP_INSTALLING', true );
		}

if (
			count( $this->arguments ) >= 2 &&
			'core' === $this->arguments[0] &&
			in_array( $this->arguments[1], [ 'install', 'multisite-install' ], true )
		) {
			define( 'WP_INSTALLING', true );

// We really need a URL here
			if ( ! isset( $_SERVER['HTTP_HOST'] ) ) {
				$url = 'https://example.com';
				WP_CLI::set_url( $url );
			}

if ( 'multisite-install' === $this->arguments[1] ) {
				// need to fake some globals to skip the checks in wp-includes/ms-settings.php
				$url_parts = Utils\parse_url( $url );
				self::fake_current_site_blog( $url_parts );

if ( ! defined( 'COOKIEHASH' ) ) {
					define( 'COOKIEHASH', md5( $url_parts['host'] ) );
				}
			}
		}

if ( $this->cmd_starts_with( [ 'import' ] ) ) {
			define( 'WP_LOAD_IMPORTERS', true );
			define( 'WP_IMPORTING', true );
		}

if ( $this->cmd_starts_with( [ 'cron', 'event', 'run' ] ) ) {
			define( 'DOING_CRON', true );
		}
		// phpcs:enable WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedConstantFound

$this->load_wordpress();

$this->run_command_and_exit();

}

/**
	 * Load WordPress, if it hasn't already been loaded
	 */
	public function load_wordpress() {
		static $wp_cli_is_loaded;
		// Globals not explicitly globalized in WordPress
		global $site_id, $wpdb, $public, $current_site, $current_blog, $path, $shortcode_tags;

if ( ! empty( $wp_cli_is_loaded ) ) {
			return;
		}

$wp_cli_is_loaded = true;

// Handle --context flag.
		$this->context_manager->switch_context( $this->config );

WP_CLI::debug( 'Begin WordPress load', 'bootstrap' );
		WP_CLI::do_hook( 'before_wp_load' );

$this->check_wp_version();

$wp_config_path = Utils\locate_wp_config();
		if ( ! $wp_config_path ) {
			WP_CLI::error(
				"'wp-config.php' not found.\n" .
				'Either create one manually or use `wp config create`.'
			);
		}

WP_CLI::debug( 'wp-config.php path: ' . $wp_config_path, 'bootstrap' );
		WP_CLI::do_hook( 'before_wp_config_load' );

// Load wp-config.php code, in the global scope
		$wp_cli_original_defined_vars = get_defined_vars();

eval( $this->get_wp_config_code() ); // phpcs:ignore Squiz.PHP.Eval.Discouraged

foreach ( get_defined_vars() as $key => $var ) {
			if ( array_key_exists( $key, $wp_cli_original_defined_vars ) || 'wp_cli_original_defined_vars' === $key ) {
				continue;
			}

// phpcs:ignore PHPCompatibility.Variables.ForbiddenGlobalVariableVariable.NonBareVariableFound
			global ${$key};
			// phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedVariableFound
			${$key} = $var;
		}

$this->maybe_update_url_from_domain_constant();
		WP_CLI::do_hook( 'after_wp_config_load' );
		$this->do_early_invoke( 'after_wp_config_load' );

// Prevent error notice from wp_guess_url() when core isn't installed
		if ( $this->cmd_starts_with( [ 'core', 'is-installed' ] )
			&& ! defined( 'COOKIEHASH' ) ) {
			define( 'COOKIEHASH', md5( 'wp-cli' ) );
		}

// Load WP-CLI utilities
		require WP_CLI_ROOT . '/php/utils-wp.php';

// Set up WordPress bootstrap actions and filters
		$this->setup_bootstrap_hooks();

// Load Core, mu-plugins, plugins, themes etc.
		if ( Utils\wp_version_compare( '4.6-alpha-37575', '>=' ) ) {
			if ( $this->cmd_starts_with( [ 'help' ] ) ) {
				// Hack: define `WP_DEBUG` and `WP_DEBUG_DISPLAY` to get `wpdb::bail()` to `wp_die()`.
				if ( ! defined( 'WP_DEBUG' ) ) {
					define( 'WP_DEBUG', true );
				}
				if ( ! defined( 'WP_DEBUG_DISPLAY' ) ) {
					define( 'WP_DEBUG_DISPLAY', true );
				}
			}
			require ABSPATH . 'wp-settings.php';
		} else {
			require WP_CLI_ROOT . '/php/wp-settings-cli.php';
		}

// Fix memory limit. See https://core.trac.wordpress.org/ticket/14889
		// phpcs:ignore WordPress.PHP.IniSet.memory_limit_Blacklisted -- This is perfectly fine for CLI usage.
		ini_set( 'memory_limit', -1 );

// Load all the admin APIs, for convenience
		require ABSPATH . 'wp-admin/includes/admin.php';

add_filter(
			'filesystem_method',
			static function () {
				return 'direct';
			},
			99
		);

// Re-enable PHP error reporting to stderr if testing.
		if ( getenv( 'BEHAT_RUN' ) ) {
			$this->enable_error_reporting();
		}

WP_CLI::debug( 'Loaded WordPress', 'bootstrap' );
		WP_CLI::do_hook( 'after_wp_load' );

}

private static function fake_current_site_blog( $url_parts ) {
		global $current_site, $current_blog;

if ( ! isset( $url_parts['path'] ) ) {
			$url_parts['path'] = '/';
		}

// phpcs:ignore WordPress.WP.GlobalVariablesOverride.Prohibited -- Intentional override.
		$current_site = (object) [
			'id'            => 1,
			'blog_id'       => 1,
			'domain'        => $url_parts['host'],
			'path'          => $url_parts['path'],
			'cookie_domain' => $url_parts['host'],
			'site_name'     => 'WordPress',
		];

// phpcs:ignore WordPress.WP.GlobalVariablesOverride.Prohibited -- Intentional override.
		$current_blog = (object) [
			'blog_id'  => 1,
			'site_id'  => 1,
			'domain'   => $url_parts['host'],
			'path'     => $url_parts['path'],
			'public'   => '1',
			'archived' => '0',
			'mature'   => '0',
			'spam'     => '0',
			'deleted'  => '0',
			'lang_id'  => '0',
		];
	}

/**
	 * Called after wp-config.php is eval'd, to potentially reset `--url`
	 */
	private function maybe_update_url_from_domain_constant() {
		if ( ! empty( $this->config['url'] ) || ! empty( $this->config['blog'] ) ) {
			return;
		}

if ( defined( 'DOMAIN_CURRENT_SITE' ) ) {
			$url = DOMAIN_CURRENT_SITE;
			if ( defined( 'PATH_CURRENT_SITE' ) ) {
				$url .= PATH_CURRENT_SITE;
			}
			WP_CLI::set_url( $url );
		}
	}

/**
	 * Set up hooks meant to run during the WordPress bootstrap process
	 */
	private function setup_bootstrap_hooks() {

if ( $this->config['skip-plugins'] ) {
			$this->setup_skip_plugins_filters();
		}

if ( $this->config['skip-themes'] ) {
			WP_CLI::add_wp_hook( 'setup_theme', [ $this, 'action_setup_theme_wp_cli_skip_themes' ], 999 );
		}

if ( $this->cmd_starts_with( [ 'help' ] ) ) {
			// Try to trap errors on help.
			$help_handler = [ $this, 'help_wp_die_handler' ]; // Avoid any cross PHP version issues by not using $this in anon function.
			WP_CLI::add_wp_hook(
				'wp_die_handler',
				function () use ( $help_handler ) {
					return $help_handler;
				}
			);
		} else {
			WP_CLI::add_wp_hook(
				'wp_die_handler',
				static function () {
					return '\WP_CLI\Utils\wp_die_handler';
				}
			);
		}

// Prevent code from performing a redirect
		WP_CLI::add_wp_hook( 'wp_redirect', 'WP_CLI\\Utils\\wp_redirect_handler' );

WP_CLI::add_wp_hook(
			'nocache_headers',
			static function ( $headers ) {
				// WordPress might be calling nocache_headers() because of a dead db
				global $wpdb;
				if ( ! empty( $wpdb->error ) ) {
					Utils\wp_die_handler( $wpdb->error );
				}
				// Otherwise, WP might be calling nocache_headers() because WP isn't installed
				Utils\wp_not_installed();
				return $headers;
			}
		);

WP_CLI::add_wp_hook(
			'setup_theme',
			static function () {
				// Polyfill is_customize_preview(), as it is needed by TwentyTwenty to
				// check for starter content.
				if ( ! function_exists( 'is_customize_preview' ) ) {
					function is_customize_preview() {
						return false;
					}
				}
			},
			0
		);

// ALTERNATE_WP_CRON might trigger a redirect, which we can't handle
		if ( defined( 'ALTERNATE_WP_CRON' ) && ALTERNATE_WP_CRON ) {
			WP_CLI::add_wp_hook(
				'muplugins_loaded',
				static function () {
					remove_action( 'init', 'wp_cron' );
				}
			);
		}

// Get rid of warnings when converting single site to multisite
		if ( defined( 'WP_INSTALLING' ) && $this->is_multisite() ) {
			$values = [
				'ms_files_rewriting'             => null,
				'active_sitewide_plugins'        => [],
				'_site_transient_update_core'    => null,
				'_site_transient_update_themes'  => null,
				'_site_transient_update_plugins' => null,
				'WPLANG'                         => '',
			];
			foreach ( $values as $key => $value ) {
				WP_CLI::add_wp_hook(
					"pre_site_option_$key",
					static function () use ( $values, $key ) {
						return $values[ $key ];
					}
				);
			}
		}

// Always permit operations against sites, regardless of status
		WP_CLI::add_wp_hook( 'ms_site_check', '__return_true' );

// Always permit operations against WordPress, regardless of maintenance mode
		WP_CLI::add_wp_hook(
			'enable_maintenance_mode',
			static function () {
				return false;
			}
		);

// Use our own debug mode handling instead of WP core
		WP_CLI::add_wp_hook(
			'enable_wp_debug_mode_checks',
			static function ( $ret ) {
				Utils\wp_debug_mode();
				return false;
			}
		);

// Never load advanced-cache.php drop-in when WP-CLI is operating
		WP_CLI::add_wp_hook(
			'enable_loading_advanced_cache_dropin',
			static function () {
				return false;
			}
		);

// In a multisite installation, die if unable to find site given in --url parameter
		if ( $this->is_multisite() ) {
			$run_on_site_not_found = false;
			if ( $this->cmd_starts_with( [ 'cache', 'flush' ] ) ) {
				$run_on_site_not_found = 'cache flush';
			}
			if ( $this->cmd_starts_with( [ 'search-replace' ] ) ) {
				// Table-specified
				// Bits: search-replace <search> <replace> [<table>...]
				// Or not against a specific blog
				if ( count( $this->arguments ) > 3
					|| ! empty( $this->assoc_args['network'] )
					|| ! empty( $this->assoc_args['all-tables'] )
					|| ! empty( $this->assoc_args['all-tables-with-prefix'] ) ) {
					$run_on_site_not_found = 'search-replace';
				}
			}
			if ( $run_on_site_not_found
				&& Utils\wp_version_compare( '4.0', '>=' ) ) {
				WP_CLI::add_wp_hook(
					'ms_site_not_found',
					static function () use ( $run_on_site_not_found ) {
						// esc_sql() isn't yet loaded, but needed.
						if ( 'search-replace' === $run_on_site_not_found ) {
							require_once ABSPATH . WPINC . '/formatting.php';
						}
						// PHP 5.3 compatible implementation of run_command_and_exit().
						$runner = WP_CLI::get_runner();
						$runner->run_command( $runner->arguments, $runner->assoc_args );
						exit;
					},
					1
				);
			}
			WP_CLI::add_wp_hook(
				'ms_site_not_found',
				static function ( $current_site, $domain, $path ) {
					$url         = $domain . $path;
					$message     = $url ? "Site '{$url}' not found." : 'Site not found.';
					$has_param   = isset( WP_CLI::get_runner()->config['url'] );
					$has_const   = defined( 'DOMAIN_CURRENT_SITE' );
					$explanation = '';
					if ( $has_param ) {
						$explanation = 'Verify `--url=<url>` matches an existing site.';
					} else {
						$explanation = "Define DOMAIN_CURRENT_SITE in 'wp-config.php' or use `--url=<url>` to override.";

if ( $has_const ) {
							$explanation = 'Verify DOMAIN_CURRENT_SITE matches an existing site or use `--url=<url>` to override.';
						}
					}
					if ( $explanation ) {
						$message .= ' ' . $explanation;
					}
					WP_CLI::error( $message );
				},
				10,
				3
			);
		}

// The APC cache is not available on the command-line, so bail, to prevent cache poisoning
		WP_CLI::add_wp_hook(
			'muplugins_loaded',
			static function () {
				if ( $GLOBALS['_wp_using_ext_object_cache'] && class_exists( 'APC_Object_Cache' ) ) {
					WP_CLI::warning( 'Running WP-CLI while the APC object cache is activated can result in cache corruption.' );
					WP_CLI::confirm( 'Given the consequences, do you wish to continue?' );
				}
			},
			0
		);

// Handle --user parameter
		if ( ! defined( 'WP_INSTALLING' ) ) {
			$config = $this->config;
			WP_CLI::add_wp_hook(
				'init',
				static function () use ( $config ) {
					if ( isset( $config['user'] ) ) {
						$fetcher = new Fetchers\User();
						$user    = $fetcher->get_check( $config['user'] );
						wp_set_current_user( $user->ID );
					} else {
						add_action( 'init', 'kses_remove_filters', 11 );
					}
				},
				0
			);
		}

// Avoid uncaught exception when using wp_mail() without defined $_SERVER['SERVER_NAME']
		WP_CLI::add_wp_hook(
			'wp_mail_from',
			static function ( $from_email ) {
				if ( 'wordpress@' === $from_email ) {
					$sitename = strtolower( Utils\parse_url( site_url(), PHP_URL_HOST ) );
					if ( substr( $sitename, 0, 4 ) === 'www.' ) {
						$sitename = substr( $sitename, 4 );
					}
					$from_email = 'wordpress@' . $sitename;
				}
				return $from_email;
			}
		);

// Don't apply set_url_scheme in get_home_url() or get_site_url().
		WP_CLI::add_wp_hook(
			'home_url',
			static function ( $url, $path, $scheme, $blog_id ) {
				if ( empty( $blog_id ) || ! is_multisite() ) {
					$url = get_option( 'home' );
				} else {
					switch_to_blog( $blog_id );
					$url = get_option( 'home' );
					restore_current_blog();
				}

if ( $path && is_string( $path ) ) {
					$url .= '/' . ltrim( $path, '/' );
				}

return $url;
			},
			0,
			4
		);
		WP_CLI::add_wp_hook(
			'site_url',
			static function ( $url, $path, $scheme, $blog_id ) {
				if ( empty( $blog_id ) || ! is_multisite() ) {
					$url = get_option( 'siteurl' );
				} else {
					switch_to_blog( $blog_id );
					$url = get_option( 'siteurl' );
					restore_current_blog();
				}

if ( $path && is_string( $path ) ) {
					$url .= '/' . ltrim( $path, '/' );
				}

return $url;
			},
			0,
			4
		);

// Set up hook for plugins and themes to conditionally add WP-CLI commands.
		WP_CLI::add_wp_hook(
			'init',
			static function () {
				do_action( 'cli_init' );
			}
		);
	}

/**
	 * Set up the filters to skip the loaded plugins
	 */
	private function setup_skip_plugins_filters() {
		$wp_cli_filter_active_plugins = static function ( $plugins ) {
			$skipped_plugins = WP_CLI::get_runner()->config['skip-plugins'];
			if ( true === $skipped_plugins ) {
				return [];
			}
			if ( ! is_array( $plugins ) ) {
				return $plugins;
			}
			foreach ( $plugins as $a => $b ) {
				// active_sitewide_plugins stores plugin name as the key.
				if ( false !== strpos( current_filter(), 'active_sitewide_plugins' ) && Utils\is_plugin_skipped( $a ) ) {
					unset( $plugins[ $a ] );
					// active_plugins stores plugin name as the value.
				} elseif ( false !== strpos( current_filter(), 'active_plugins' ) && Utils\is_plugin_skipped( $b ) ) {
					unset( $plugins[ $a ] );
				}
			}
			// Reindex because active_plugins expects a numeric index.
			if ( false !== strpos( current_filter(), 'active_plugins' ) ) {
				$plugins = array_values( $plugins );
			}
			return $plugins;
		};

$hooks = [
			'pre_site_option_active_sitewide_plugins',
			'site_option_active_sitewide_plugins',
			'pre_option_active_plugins',
			'option_active_plugins',
		];
		foreach ( $hooks as $hook ) {
			WP_CLI::add_wp_hook( $hook, $wp_cli_filter_active_plugins, 999 );
		}
		WP_CLI::add_wp_hook(
			'plugins_loaded',
			static function () use ( $hooks, $wp_cli_filter_active_plugins ) {
				foreach ( $hooks as $hook ) {
					remove_filter( $hook, $wp_cli_filter_active_plugins, 999 );
				}
			},
			0
		);
	}

/**
	 * Set up the filters to skip the loaded theme
	 */
	public function action_setup_theme_wp_cli_skip_themes() {
		$wp_cli_filter_active_theme = static function ( $value ) {
			$skipped_themes = WP_CLI::get_runner()->config['skip-themes'];
			if ( true === $skipped_themes ) {
				return '';
			}
			if ( ! is_array( $skipped_themes ) ) {
				$skipped_themes = explode( ',', $skipped_themes );
			}

$checked_value = $value;
			// Always check against the stylesheet value
			// This ensures a child theme can be skipped when template differs
			if ( false !== stripos( current_filter(), 'option_template' ) ) {
				$checked_value = get_option( 'stylesheet' );
			}

if ( '' === $checked_value || in_array( $checked_value, $skipped_themes, true ) ) {
				return '';
			}
			return $value;
		};
		$hooks                      = [
			'pre_option_template',
			'option_template',
			'pre_option_stylesheet',
			'option_stylesheet',
		];
		foreach ( $hooks as $hook ) {
			add_filter( $hook, $wp_cli_filter_active_theme, 999 );
		}
		// Clean up after the TEMPLATEPATH and STYLESHEETPATH constants are defined
		WP_CLI::add_wp_hook(
			'after_setup_theme',
			static function () use ( $hooks, $wp_cli_filter_active_theme ) {
				foreach ( $hooks as $hook ) {
					remove_filter( $hook, $wp_cli_filter_active_theme, 999 );
				}
			},
			0
		);
	}

/**
	 * Whether or not this WordPress installation is multisite.
	 *
	 * For use after wp-config.php has loaded, but before the rest of WordPress
	 * is loaded.
	 */
	private function is_multisite() {
		if ( defined( 'MULTISITE' ) ) {
			return MULTISITE;
		}

if ( defined( 'SUBDOMAIN_INSTALL' ) || defined( 'VHOST' ) || defined( 'SUNRISE' ) ) {
			return true;
		}

return false;
	}

/**
	 * Error handler for `wp_die()` when the command is help to try to trap errors (db connection failure in particular) during WordPress load.
	 */
	public function help_wp_die_handler( $message ) {
		$help_exit_warning = 'Error during WordPress load.';
		if ( $message instanceof WP_Error ) {
			$help_exit_warning = Utils\wp_clean_error_message( $message->get_error_message() );
		} elseif ( is_string( $message ) ) {
			$help_exit_warning = Utils\wp_clean_error_message( $message );
		}
		$this->run_command_and_exit( $help_exit_warning );
	}

/**
	 * Check whether there's a WP-CLI update available, and suggest update if so.
	 */
	private function auto_check_update() {

// `wp cli update` only works with Phars at this time.
		if ( ! Utils\inside_phar() ) {
			return;
		}

$existing_phar = realpath( $_SERVER['argv'][0] );
		// Phar needs to be writable to be easily updateable.
		if ( ! is_writable( $existing_phar ) || ! is_writable( dirname( $existing_phar ) ) ) {
			return;
		}

// Only check for update when a human is operating.
		if ( ! function_exists( 'posix_isatty' ) || ! posix_isatty( STDOUT ) ) {
			return;
		}

// Allow hosts and other providers to disable automatic check update.
		if ( getenv( 'WP_CLI_DISABLE_AUTO_CHECK_UPDATE' ) ) {
			return;
		}

// Permit configuration of number of days between checks.
		$days_between_checks = getenv( 'WP_CLI_AUTO_CHECK_UPDATE_DAYS' );
		if ( false === $days_between_checks ) {
			$days_between_checks = 1;
		}

$cache     = WP_CLI::get_cache();
		$cache_key = 'wp-cli-update-check';
		// Bail early on the first check, so we don't always check on an unwritable cache.
		if ( ! $cache->has( $cache_key ) ) {
			$cache->write( $cache_key, time() );
			return;
		}

// Bail if last check is still within our update check time period.
		$last_check = (int) $cache->read( $cache_key );
		if ( ( time() - ( 24 * 60 * 60 * $days_between_checks ) ) < $last_check ) {
			return;
		}

// In case the operation fails, ensure the timestamp has been updated.
		$cache->write( $cache_key, time() );

// Check whether any updates are available.
		ob_start();
		WP_CLI::run_command(
			[ 'cli', 'check-update' ],
			[
				'format' => 'count',
			]
		);
		$count = ob_get_clean();
		if ( ! $count ) {
			return;
		}

// Looks like an update is available, so let's prompt to update.
		WP_CLI::run_command( [ 'cli', 'update' ] );
		// If the Phar was replaced, we can't proceed with the original process.
		exit;
	}

/**
	 * Get a suggestion on similar (sub)commands when the user entered an
	 * unknown (sub)command.
	 *
	 * @param string           $entry        User entry that didn't match an
	 *                                       existing command.
	 * @param CompositeCommand $root_command Root command to start search for
	 *                                       suggestions at.
	 *
	 * @return string Suggestion that fits the user entry, or an empty string.
	 */
	private function get_subcommand_suggestion( $entry, CompositeCommand $root_command = null ) {
		$commands = [];
		$this->enumerate_commands( $root_command ?: WP_CLI::get_root_command(), $commands );

return Utils\get_suggestion( $entry, $commands, $threshold = 2 );
	}

/**
	 * Recursive method to enumerate all known commands.
	 *
	 * @param CompositeCommand $command Composite command to recurse over.
	 * @param array            $list    Reference to list accumulating results.
	 * @param string           $parent  Parent command to use as prefix.
	 */
	private function enumerate_commands( CompositeCommand $command, array &$list, $parent = '' ) {
		foreach ( $command->get_subcommands() as $subcommand ) {
			/** @var CompositeCommand $subcommand */
			$command_string = empty( $parent )
				? $subcommand->get_name()
				: "{$parent} {$subcommand->get_name()}";

$list[] = $command_string;

$this->enumerate_commands( $subcommand, $list, $command_string );
		}
	}

/**
	 * Enables (almost) full PHP error reporting to stderr.
	 */
	private function enable_error_reporting() {
		if ( E_ALL !== error_reporting() ) {
			// Don't enable E_DEPRECATED as old versions of WP use PHP 4 style constructors and the mysql extension.
			error_reporting( E_ALL & ~E_DEPRECATED );
		}
		ini_set( 'display_errors', 'stderr' ); // phpcs:ignore WordPress.PHP.IniSet.display_errors_Blacklisted
	}
}
<?php

namespace WP_CLI;

/**
 * Checks if the list of parameters matches the specification defined in the synopsis.
 */
class SynopsisValidator {

/**
	 * Structured representation of command synopsis.
	 *
	 * @var array
	 */
	private $spec;

/**
	 * @param string $synopsis Command's synopsis.
	 */
	public function __construct( $synopsis ) {
		$this->spec = SynopsisParser::parse( $synopsis );
	}

/**
	 * Get any unknown arguments.
	 *
	 * @return array
	 */
	public function get_unknown() {
		return array_column(
			$this->query_spec(
				[
					'type' => 'unknown',
				]
			),
			'token'
		);
	}

/**
	 * Check whether there are enough positional arguments.
	 *
	 * @param array $args Positional arguments.
	 * @return bool
	 */
	public function enough_positionals( $args ) {
		$positional = $this->query_spec(
			[
				'type'     => 'positional',
				'optional' => false,
			]
		);

return count( $args ) >= count( $positional );
	}

/**
	 * Check for any unknown positionals.
	 *
	 * @param array $args Positional arguments.
	 * @return array
	 */
	public function unknown_positionals( $args ) {
		$positional_repeating = $this->query_spec(
			[
				'type'      => 'positional',
				'repeating' => true,
			]
		);

// At least one positional supports as many as possible.
		if ( ! empty( $positional_repeating ) ) {
			return [];
		}

$positional = $this->query_spec(
			[
				'type'      => 'positional',
				'repeating' => false,
			]
		);

return array_slice( $args, count( $positional ) );
	}

/**
	 * Check that all required keys are present and that they have values.
	 *
	 * @param array $assoc_args Parameters passed to command.
	 * @return array
	 */
	public function validate_assoc( $assoc_args ) {
		$assoc_spec = $this->query_spec(
			[
				'type' => 'assoc',
			]
		);

$errors = [
			'fatal'   => [],
			'warning' => [],
		];

$to_unset = [];

foreach ( $assoc_spec as $param ) {
			$key = $param['name'];

if ( ! isset( $assoc_args[ $key ] ) ) {
				if ( ! $param['optional'] ) {
					$errors['fatal'][ $key ] = "missing --$key parameter";
				}
			} else {
				if ( true === $assoc_args[ $key ] && ! $param['value']['optional'] ) {
					$error_type                    = ( ! $param['optional'] ) ? 'fatal' : 'warning';
					$errors[ $error_type ][ $key ] = "--$key parameter needs a value";

$to_unset[] = $key;
				}
			}
		}

return [ $errors, $to_unset ];
	}

/**
	 * Check whether there are unknown parameters supplied.
	 *
	 * @param array $assoc_args Parameters passed to command.
	 * @return array|false
	 */
	public function unknown_assoc( $assoc_args ) {
		$generic = $this->query_spec(
			[
				'type' => 'generic',
			]
		);

if ( count( $generic ) ) {
			return [];
		}

$known_assoc = [];

foreach ( $this->spec as $param ) {
			if ( in_array( $param['type'], [ 'assoc', 'flag' ], true ) ) {
				$known_assoc[] = $param['name'];
			}
		}

return array_diff( array_keys( $assoc_args ), $known_assoc );
	}

/**
	 * Filters a list of associative arrays, based on a set of key => value arguments.
	 *
	 * @param array $args An array of key => value arguments to match against
	 * @param string $operator
	 * @return array
	 */
	private function query_spec( $args, $operator = 'AND' ) {
		$operator = strtoupper( $operator );
		$count    = count( $args );
		$filtered = [];

foreach ( $this->spec as $key => $to_match ) {
			$matched = 0;
			foreach ( $args as $m_key => $m_value ) {
				if ( array_key_exists( $m_key, $to_match ) && $m_value === $to_match[ $m_key ] ) {
					$matched++;
				}
			}

if ( ( 'AND' === $operator && $matched === $count )
				|| ( 'OR' === $operator && $matched > 0 )
				|| ( 'NOT' === $operator && 0 === $matched ) ) {
					$filtered[ $key ] = $to_match;
			}
		}

return $filtered;
	}

}
<?php

namespace WP_CLI;

use WP_CLI;

class Completions {

private $words;
	private $opts = [];

/**
	 * Instantiate a Completions object.
	 *
	 * @param string $line Line of shell input to compute a completion for.
	 */
	public function __construct( $line ) {
		// TODO: properly parse single and double quotes
		$this->words = explode( ' ', $line );

// First word is always `wp`.
		array_shift( $this->words );

// Last word is either empty or an incomplete subcommand.
		$this->cur_word = end( $this->words );
		if ( '' !== $this->cur_word && ! preg_match( '/^\-/', $this->cur_word ) ) {
			array_pop( $this->words );
		}

$is_alias = false;
		$is_help  = false;
		if ( ! empty( $this->words[0] ) && preg_match( '/^@/', $this->words[0] ) ) {
			array_shift( $this->words );
			// `wp @al` is false, but `wp @all ` is true.
			if ( count( $this->words ) ) {
				$is_alias = true;
			}
		} elseif ( ! empty( $this->words[0] ) && 'help' === $this->words[0] ) {
			array_shift( $this->words );
			$is_help = true;
		}

$r = $this->get_command( $this->words );
		if ( ! is_array( $r ) ) {
			return;
		}

list( $command, $args, $assoc_args ) = $r;

$spec = SynopsisParser::parse( $command->get_synopsis() );

foreach ( $spec as $arg ) {
			if ( 'positional' === $arg['type'] && 'file' === $arg['name'] ) {
				$this->add( '<file> ' );
				return;
			}
		}

if ( $command->can_have_subcommands() ) {
			// Add completion when command is `wp` and alias isn't set.
			if ( 'wp' === $command->get_name() && false === $is_alias && false === $is_help ) {
				$aliases = WP_CLI::get_configurator()->get_aliases();
				foreach ( $aliases as $name => $_ ) {
					$this->add( "$name " );
				}
			}
			foreach ( $command->get_subcommands() as $name => $_ ) {
				$this->add( "$name " );
			}
		} else {
			foreach ( $spec as $arg ) {
				if ( in_array( $arg['type'], [ 'flag', 'assoc' ], true ) ) {
					if ( isset( $assoc_args[ $arg['name'] ] ) ) {
						continue;
					}

$opt = "--{$arg['name']}";

if ( 'flag' === $arg['type'] ) {
						$opt .= ' ';
					} elseif ( ! $arg['value']['optional'] ) {
						$opt .= '=';
					}

$this->add( $opt );
				}
			}

foreach ( $this->get_global_parameters() as $param => $runtime ) {
				if ( isset( $assoc_args[ $param ] ) ) {
					continue;
				}

$opt = "--{$param}";

if ( '' === $runtime || ! is_string( $runtime ) ) {
					$opt .= ' ';
				} else {
					$opt .= '=';
				}

$this->add( $opt );
			}
		}

}

/**
	 * Get the specific WP-CLI command that is being referenced.
	 *
	 * @param array $words Individual input line words.
	 *
	 * @return array|mixed Array with command and arguments, or error result if command detection failed.
	 */
	private function get_command( $words ) {
		$positional_args = [];
		$assoc_args      = [];

foreach ( $words as $arg ) {
			if ( preg_match( '|^--([^=]+)=?|', $arg, $matches ) ) {
				$assoc_args[ $matches[1] ] = true;
			} else {
				$positional_args[] = $arg;
			}
		}

$r = WP_CLI::get_runner()->find_command_to_run( $positional_args );
		if ( ! is_array( $r ) && array_pop( $positional_args ) === $this->cur_word ) {
			$r = WP_CLI::get_runner()->find_command_to_run( $positional_args );
		}

if ( ! is_array( $r ) ) {
			return $r;
		}

list( $command, $args ) = $r;

return [ $command, $args, $assoc_args ];
	}

/**
	 * Get global parameters.
	 *
	 * @return array Associative array of global parameters.
	 */
	private function get_global_parameters() {
		$params = [];
		foreach ( WP_CLI::get_configurator()->get_spec() as $key => $details ) {
			if ( false === $details['runtime'] ) {
				continue;
			}

if ( isset( $details['deprecated'] ) ) {
				continue;
			}

if ( isset( $details['hidden'] ) ) {
				continue;
			}
			$params[ $key ] = $details['runtime'];

// Add additional option like `--[no-]color`.
			if ( true === $details['runtime'] ) {
				$params[ 'no-' . $key ] = '';
			}
		}

return $params;
	}

/**
	 * Store individual option.
	 *
	 * @param string $opt Option to store.
	 *
	 * @return void
	 */
	private function add( $opt ) {
		if ( '' !== $this->cur_word ) {
			if ( 0 !== strpos( $opt, $this->cur_word ) ) {
				return;
			}
		}

$this->opts[] = $opt;
	}

/**
	 * Render the stored options.
	 *
	 * @return void
	 */
	public function render() {
		foreach ( $this->opts as $opt ) {
			WP_CLI::line( $opt );
		}
	}
}
<?php

namespace WP_CLI;

/**
 * Class Autoloader.
 *
 * This is a custom autoloader to replace the functionality that we would
 * normally get through the autoloader generated by Composer.
 *
 * We need this separate autoloader for the bootstrapping process, which happens
 * before the Composer autoloader(s) could be loaded.
 *
 * @package WP_CLI
 */
class Autoloader {

/**
	 * Array containing the registered namespace structures
	 *
	 * @var array
	 */
	protected $namespaces = [];

/**
	 * Destructor for the Autoloader class.
	 *
	 * The destructor automatically unregisters the autoload callback function
	 * with the SPL autoload system.
	 */
	public function __destruct() {
		$this->unregister();
	}

/**
	 * Registers the autoload callback with the SPL autoload system.
	 */
	public function register() {
		spl_autoload_register( [ $this, 'autoload' ] );
	}

/**
	 * Unregisters the autoload callback with the SPL autoload system.
	 */
	public function unregister() {
		spl_autoload_unregister( [ $this, 'autoload' ] );
	}

/**
	 * Add a specific namespace structure with our custom autoloader.
	 *
	 * @param string  $root        Root namespace name.
	 * @param string  $base_dir    Directory containing the class files.
	 * @param string  $prefix      Prefix to be added before the class.
	 * @param string  $suffix      Suffix to be added after the class.
	 * @param boolean $lowercase   Whether the class should be changed to
	 *                             lowercase.
	 * @param boolean $underscores Whether the underscores should be changed to
	 *                             hyphens.
	 *
	 * @return self
	 */
	public function add_namespace(
		$root,
		$base_dir,
		$prefix = '',
		$suffix = '.php',
		$lowercase = false,
		$underscores = false
	) {
		$this->namespaces[] = [
			'root'        => $this->normalize_root( (string) $root ),
			'base_dir'    => $this->add_trailing_slash( (string) $base_dir ),
			'prefix'      => (string) $prefix,
			'suffix'      => (string) $suffix,
			'lowercase'   => (bool) $lowercase,
			'underscores' => (bool) $underscores,
		];

return $this;
	}

/**
	 * The autoload function that gets registered with the SPL Autoloader
	 * system.
	 *
	 * @param string $class The class that got requested by the spl_autoloader.
	 */
	public function autoload( $class ) {

// Iterate over namespaces to find a match.
		foreach ( $this->namespaces as $namespace ) {

// Move on if the object does not belong to the current namespace.
			if ( 0 !== strpos( $class, $namespace['root'] ) ) {
				continue;
			}

// Remove namespace root level to correspond with root filesystem, and
			// replace the namespace separator "\" by the system-dependent directory separator.
			$filename = str_replace(
				[ $namespace['root'], '\\' ],
				[ '', DIRECTORY_SEPARATOR ],
				$class
			);

// Remove a leading backslash from the class name.
			$filename = $this->remove_leading_backslash( $filename );

// Change to lower case if requested.
			if ( $namespace['lowercase'] ) {
				$filename = strtolower( $filename );
			}

// Change underscores into hyphens if requested.
			if ( $namespace['underscores'] ) {
				$filename = str_replace( '_', '-', $filename );
			}

// Add base_dir, prefix and suffix.
			$filepath = $namespace['base_dir']
				. $namespace['prefix']
				. $filename
				. $namespace['suffix'];

// Throw an exception if the file does not exist or is not readable.
			if ( is_readable( $filepath ) ) {
				require_once $filepath;
			}
		}
	}

/**
	 * Normalize a namespace root.
	 *
	 * @param string $root Namespace root that needs to be normalized.
	 *
	 * @return string Normalized namespace root.
	 */
	protected function normalize_root( $root ) {
		$root = $this->remove_leading_backslash( $root );

return $this->add_trailing_backslash( $root );
	}

/**
	 * Remove a leading backslash from a string.
	 *
	 * @param string $string String to remove the leading backslash from.
	 *
	 * @return string Modified string.
	 */
	protected function remove_leading_backslash( $string ) {
		return ltrim( $string, '\\' );
	}

/**
	 * Make sure a string ends with a trailing backslash.
	 *
	 * @param string $string String to check the trailing backslash of.
	 *
	 * @return string Modified string.
	 */
	protected function add_trailing_backslash( $string ) {
		return rtrim( $string, '\\' ) . '\\';
	}

/**
	 * Make sure a string ends with a trailing slash.
	 *
	 * @param string $string String to check the trailing slash of.
	 *
	 * @return string Modified string.
	 */
	protected function add_trailing_slash( $string ) {
		return rtrim( $string, '/\\' ) . '/';
	}
}
<?php

namespace WP_CLI;

use Mustangostang\Spyc;

/**
 * Parse command attributes from its PHPdoc.
 * Used to determine execution characteristics (arguments, etc.).
 */
class DocParser {

/**
	 * PHPdoc command for the command.
	 *
	 * @var string
	 */
	protected $doc_comment;

/**
	 * @param string $doc_comment
	 */
	public function __construct( $doc_comment ) {
		/* Make sure we have a known line ending in document */
		$doc_comment       = str_replace( "\r\n", "\n", $doc_comment );
		$this->doc_comment = self::remove_decorations( $doc_comment );
	}

/**
	 * Remove unused cruft from PHPdoc comment.
	 *
	 * @param string $comment PHPdoc comment.
	 * @return string
	 */
	private static function remove_decorations( $comment ) {
		$comment = preg_replace( '|^/\*\*[\r\n]+|', '', $comment );
		$comment = preg_replace( '|\n[\t ]*\*/$|', '', $comment );
		$comment = preg_replace( '|^[\t ]*\* ?|m', '', $comment );

return $comment;
	}

/**
	 * Get the command's short description (e.g. summary).
	 *
	 * @return string
	 */
	public function get_shortdesc() {
		if ( ! preg_match( '|^([^@][^\n]+)\n*|', $this->doc_comment, $matches ) ) {
			return '';
		}

return $matches[1];
	}

/**
	 * Get the command's full description
	 *
	 * @return string
	 */
	public function get_longdesc() {
		$shortdesc = $this->get_shortdesc();
		if ( ! $shortdesc ) {
			return '';
		}

$longdesc = substr( $this->doc_comment, strlen( $shortdesc ) );

$lines = [];
		foreach ( explode( "\n", $longdesc ) as $line ) {
			if ( 0 === strpos( $line, '@' ) ) {
				break;
			}

$lines[] = $line;
		}

return trim( implode( "\n", $lines ) );
	}

/**
	 * Get the value for a given tag (e.g. "@alias" or "@subcommand")
	 *
	 * @param string $name Name for the tag, without '@'
	 * @return string
	 */
	public function get_tag( $name ) {
		if ( preg_match( '|^@' . $name . '\s+([a-z-_0-9]+)|m', $this->doc_comment, $matches ) ) {
			return $matches[1];
		}

return '';
	}

/**
	 * Get the command's synopsis.
	 *
	 * @return string
	 */
	public function get_synopsis() {
		if ( ! preg_match( '|^@synopsis\s+(.+)|m', $this->doc_comment, $matches ) ) {
			return '';
		}

return $matches[1];
	}

/**
	 * Get the description for a given argument.
	 *
	 * @param string $name Argument's doc name.
	 * @return string
	 */
	public function get_arg_desc( $name ) {

if ( preg_match( "/\[?<{$name}>.+\n: (.+?)(\n|$)/", $this->doc_comment, $matches ) ) {
			return $matches[1];
		}

return '';

}

/**
	 * Get the arguments for a given argument.
	 *
	 * @param string $name Argument's doc name.
	 * @return mixed|null
	 */
	public function get_arg_args( $name ) {
		return $this->get_arg_or_param_args( "/^\[?<{$name}>.*/" );
	}

/**
	 * Get the description for a given parameter.
	 *
	 * @param string $key Parameter's key.
	 * @return string
	 */
	public function get_param_desc( $key ) {

if ( preg_match( "/\[?--{$key}=.+\n: (.+?)(\n|$)/", $this->doc_comment, $matches ) ) {
			return $matches[1];
		}

return '';
	}

/**
	 * Get the arguments for a given parameter.
	 *
	 * @param string $key Parameter's key.
	 * @return mixed|null
	 */
	public function get_param_args( $key ) {
		return $this->get_arg_or_param_args( "/^\[?--{$key}=.*/" );
	}

/**
	 * Get the args for an arg or param
	 *
	 * @param string $regex Pattern to match against
	 * @return array|null Interpreted YAML document, or null.
	 */
	private function get_arg_or_param_args( $regex ) {
		$bits       = explode( "\n", $this->doc_comment );
		$within_arg = false;
		$within_doc = false;
		$document   = [];
		foreach ( $bits as $bit ) {
			if ( preg_match( $regex, $bit ) ) {
				$within_arg = true;
			}

if ( $within_arg && $within_doc && '---' === $bit ) {
				$within_doc = false;
			}

if ( $within_arg && ! $within_doc && '---' === $bit ) {
				$within_doc = true;
			}

if ( $within_doc ) {
				$document[] = $bit;
			}

if ( $within_arg && '' === $bit ) {
				$within_arg = false;
				break;
			}
		}

if ( $document ) {
			return Spyc::YAMLLoadString( implode( "\n", $document ) );
		}
		return null;
	}

}
<?php

namespace WP_CLI\Bootstrap;

use WP_CLI;
use WP_CLI\Context;
use WP_CLI\ContextManager;

/**
 * Class InitializeContexts.
 *
 * @package WP_CLI\Bootstrap
 */
final class InitializeContexts implements BootstrapStep {

/**
	 * Process this single bootstrapping step.
	 *
	 * @param BootstrapState $state Contextual state to pass into the step.
	 *
	 * @return BootstrapState Modified state to pass to the next step.
	 */
	public function process( BootstrapState $state ) {
		$context_manager = new ContextManager();

$contexts = [
			Context::CLI      => new Context\Cli(),
			Context::ADMIN    => new Context\Admin(),
			Context::FRONTEND => new Context\Frontend(),
			Context::AUTO     => new Context\Auto( $context_manager ),
		];

$contexts = WP_CLI::do_hook( 'before_registering_contexts', $contexts );

foreach ( $contexts as $name => $implementation ) {
			$context_manager->register_context( $name, $implementation );
		}

$state->setValue( 'context_manager', $context_manager );

return $state;
	}
}
<?php

namespace WP_CLI\Bootstrap;

/**
 * Class LaunchRunner.
 *
 * Kick off the Runner object that starts the actual commands.
 *
 * @package WP_CLI\Bootstrap
 */
final class LaunchRunner implements BootstrapStep {

$runner()->register_context_manager(
			$state->getValue( 'context_manager' )
		);

$runner()->start();

return $state;
	}
}
<?php

namespace WP_CLI\Bootstrap;

/**
 * Class BootstrapState.
 *
 * Represents the state that is passed from one bootstrap step to the next.
 *
 * @package WP_CLI\Bootstrap
 *
 * Maintain BC: Changing the method names in this class breaks autoload interactions between Phar
 * & framework/commands you use outside of Phar (like when running the Phar WP inside of a command folder).
 * @phpcs:disable WordPress.NamingConventions.ValidFunctionName.MethodNameInvalid
 */
class BootstrapState {

/**
	 * Whether the command currently being run is "protected".
	 *
	 * This means that the command should not be allowed to break due to
	 * extension code.
	 */
	const IS_PROTECTED_COMMAND = 'is_protected_command';

/**
	 * Internal storage of the state values.
	 *
	 * @var array
	 */
	private $state = [];

/**
	 * Get the state value for a given key.
	 *
	 * @param string $key      Key to get the state from.
	 * @param mixed  $fallback Fallback value to use if the key is not defined.
	 *
	 * @return mixed
	 */
	public function getValue( $key, $fallback = null ) {
		return array_key_exists( $key, $this->state )
			? $this->state[ $key ]
			: $fallback;
	}

/**
	 * Set the state value for a given key.
	 *
	 * @param string $key   Key to set the state for.
	 * @param mixed  $value Value to set the state for the given key to.
	 *
	 * @return void
	 */
	public function setValue( $key, $value ) {
		$this->state[ $key ] = $value;
	}
}
<?php

namespace WP_CLI\Bootstrap;

/**
 * Class DeclareAbstractBaseCommand.
 *
 * Declares the abstract `WP_CLI_Command` base class.
 *
 * @package WP_CLI\Bootstrap
 */
final class DeclareAbstractBaseCommand implements BootstrapStep {

return $state;
	}
}
<?php

namespace WP_CLI\Bootstrap;

/**
 * Class DeclareMainClass.
 *
 * Declares the main `WP_CLI` class.
 *
 * @package WP_CLI\Bootstrap
 */
final class DeclareMainClass implements BootstrapStep {

return $state;
	}
}
<?php

namespace WP_CLI\Bootstrap;

/**
 * Class LoadDispatcher.
 *
 * Loads the dispatcher that will dispatch command names to file locations.
 *
 * @package WP_CLI\Bootstrap
 */
final class LoadDispatcher implements BootstrapStep {

return $state;
	}
}
<?php

namespace WP_CLI\Bootstrap;

/**
 * Class InitializeColorization.
 *
 * Initialize the colorization through the `WP_CLI\Runner` object.
 *
 * @package WP_CLI\Bootstrap
 */
final class InitializeColorization implements BootstrapStep {

return $state;
	}
}
<?php

namespace WP_CLI\Bootstrap;

/**
 * Class ConfigureRunner.
 *
 * Initialize the configuration for the `WP_CLI\Runner` object.
 *
 * @package WP_CLI\Bootstrap
 */
final class ConfigureRunner implements BootstrapStep {

return $state;
	}
}
<?php

namespace WP_CLI\Bootstrap;

/**
 * Class DefineProtectedCommands.
 *
 * Define the commands that are "protected", meaning that they shouldn't be able
 * to break due to extension code.
 *
 * @package WP_CLI\Bootstrap
 */
final class DefineProtectedCommands implements BootstrapStep {

foreach ( $commands as $command ) {
			if ( 0 === strpos( $current_command, $command ) ) {
				$state->setValue( BootstrapState::IS_PROTECTED_COMMAND, true );
			}
		}

return $state;
	}

/**
	 * Get the list of protected commands.
	 *
	 * @return array
	 */
	private function get_protected_commands() {
		return [
			'cli info',
			'package',
		];
	}

/**
	 * Get the current command as a string.
	 *
	 * @return string Current command to be executed.
	 */
	private function get_current_command() {
		$runner = new RunnerInstance();

return implode( ' ', (array) $runner()->arguments );
	}
}
<?php

namespace WP_CLI\Bootstrap;

/**
 * Class DeclareFallbackFunctions.
 *
 * Declares functions that might have been disabled but are required.
 *
 * @package WP_CLI\Bootstrap
 */
final class DeclareFallbackFunctions implements BootstrapStep {
	/**
	 * Process this single bootstrapping step.
	 *
	 * @param BootstrapState $state Contextual state to pass into the step.
	 *
	 * @return BootstrapState Modified state to pass to the next step.
	 */
	public function process( BootstrapState $state ) {
		include __DIR__ . '/../../fallback-functions.php';

return $state;
	}
}
<?php

namespace WP_CLI\Bootstrap;

use WP_CLI;

/**
 * Class LoadExtraCommand.
 *
 * Loads a command that was passed through the `--exec=<php-code>` option.
 *
 * @package WP_CLI\Bootstrap
 */
final class LoadExecCommand implements BootstrapStep {

$runner = new RunnerInstance();
		if ( ! isset( $runner()->config['exec'] ) ) {
			return $state;
		}

foreach ( $runner()->config['exec'] as $php_code ) {
			eval( $php_code ); // phpcs:ignore Squiz.PHP.Eval.Discouraged
		}

return $state;
	}
}
<?php

namespace WP_CLI\Bootstrap;

/**
 * Interface BootstrapStep.
 *
 * Represents a single bootstrapping step that can be processed.
 *
 * @package WP_CLI\Bootstrap
 */
interface BootstrapStep {

namespace WP_CLI\Bootstrap;

use WP_CLI;
use WP_CLI\Utils;

/**
 * Class LoadRequiredCommand.
 *
 * Loads a command that was passed through the `--require=<command>` option.
 *
 * @package WP_CLI\Bootstrap
 */
final class LoadRequiredCommand implements BootstrapStep {

$runner = new RunnerInstance();
		if ( ! isset( $runner()->config['require'] ) ) {
			return $state;
		}

foreach ( $runner()->config['require'] as $path ) {
			if ( ! file_exists( $path ) ) {
				$context        = '';
				$required_files = $runner()->get_required_files();
				foreach ( [ 'global', 'project', 'runtime' ] as $scope ) {
					if ( in_array( $path, $required_files[ $scope ], true ) ) {
						switch ( $scope ) {
							case 'global':
								$context = ' (from global ' . Utils\basename( $runner()->get_global_config_path() ) . ')';
								break;
							case 'project':
								$context = ' (from project\'s ' . Utils\basename( $runner()->get_project_config_path() ) . ')';
								break;
							case 'runtime':
								$context = ' (from runtime argument)';
								break;
						}
						break;
					}
				}
				WP_CLI::error( sprintf( "Required file '%s' doesn't exist%s.", Utils\basename( $path ), $context ) );
			}
			Utils\load_file( $path );
			WP_CLI::debug( 'Required file from config: ' . $path, 'bootstrap' );
		}

return $state;
	}
}
<?php

namespace WP_CLI\Bootstrap;

/**
 * Class LoadUtilityFunctions.
 *
 * Loads the functions available through `WP_CLI\Utils`.
 *
 * @package WP_CLI\Bootstrap
 */
final class LoadUtilityFunctions implements BootstrapStep {

return $state;
	}
}
<?php

namespace WP_CLI\Bootstrap;

use Exception;
use WP_CLI;

/**
 * Abstract class AutoloaderStep.
 *
 * Abstract base class for steps that include an autoloader.
 *
 * @package WP_CLI\Bootstrap
 */
abstract class AutoloaderStep implements BootstrapStep {

/**
	 * Store state for subclasses to have access.
	 *
	 * @var BootstrapState
	 */
	protected $state;

$found_autoloader = false;
		$autoloader_paths = $this->get_autoloader_paths();

if ( false === $autoloader_paths ) {
			// Skip this autoloading step.
			return $state;
		}

foreach ( $autoloader_paths as $autoloader_path ) {
			if ( is_readable( $autoloader_path ) ) {
				try {
					WP_CLI::debug(
						sprintf(
							'Loading detected autoloader: %s',
							$autoloader_path
						),
						'bootstrap'
					);
					require $autoloader_path;
					$found_autoloader = true;
				} catch ( Exception $exception ) {
					WP_CLI::warning(
						"Failed to load autoloader '{$autoloader_path}'. Reason: "
						. $exception->getMessage()
					);
				}
			}
		}

if ( ! $found_autoloader ) {
			$this->handle_failure();
		}

return $this->state;
	}

/**
	 * Get the name of the custom vendor folder as set in `composer.json`.
	 *
	 * @return string|false Name of the custom vendor folder or false if none.
	 */
	protected function get_custom_vendor_folder() {
		$maybe_composer_json = WP_CLI_ROOT . '/../../../composer.json';
		if ( ! is_readable( $maybe_composer_json ) ) {
			return false;
		}

$composer = json_decode( file_get_contents( $maybe_composer_json ) );

if ( ! empty( $composer->config )
			&& ! empty( $composer->config->{'vendor-dir'} )
		) {
			return $composer->config->{'vendor-dir'};
		}

return false;
	}

/**
	 * Handle the failure to find an autoloader.
	 *
	 * @return void
	 */
	protected function handle_failure() { }

/**
	 * Get the autoloader paths to scan for an autoloader.
	 *
	 * @return string[]|false Array of strings with autoloader paths, or false
	 *                        to skip.
	 */
	abstract protected function get_autoloader_paths();
}
<?php

namespace WP_CLI\Bootstrap;

use DirectoryIterator;
use Exception;
use WP_CLI;

/**
 * Class RegisterFrameworkCommands.
 *
 * Register the commands that are directly included with the framework.
 *
 * @package WP_CLI\Bootstrap
 */
final class RegisterFrameworkCommands implements BootstrapStep {

$iterator = new DirectoryIterator( $cmd_dir );

foreach ( $iterator as $filename ) {
			if ( '.php' !== substr( $filename, - 4 ) ) {
				continue;
			}

try {
				WP_CLI::debug(
					sprintf(
						'Adding framework command: %s',
						"$cmd_dir/$filename"
					),
					'bootstrap'
				);

include_once "$cmd_dir/$filename";
			} catch ( Exception $exception ) {
				WP_CLI::warning(
					"Could not add command {$cmd_dir}/{$filename}. Reason: " . $exception->getMessage()
				);
			}
		}

return $state;
	}
}
<?php

namespace WP_CLI\Bootstrap;

use DirectoryIterator;

/**
 * Class InitializeLogger.
 *
 * Initialize the logger through the `WP_CLI\Runner` object.
 *
 * @package WP_CLI\Bootstrap
 */
final class InitializeLogger implements BootstrapStep {

return $state;
	}

/**
	 * Load the class declarations for the loggers.
	 */
	private function declare_loggers() {
		$logger_dir = WP_CLI_ROOT . '/php/WP_CLI/Loggers';
		$iterator   = new DirectoryIterator( $logger_dir );

// Make sure the base class is declared first.
		include_once "$logger_dir/Base.php";

foreach ( $iterator as $filename ) {
			if ( '.php' !== substr( $filename, - 4 ) ) {
				continue;
			}

include_once "$logger_dir/$filename";
		}
	}
}
<?php

namespace WP_CLI\Bootstrap;

use WP_CLI\Autoloader;

/**
 * Class IncludeFrameworkAutoloader.
 *
 * Loads the framework autoloader through an autolaoder separate from the
 * Composer one, to avoid coupling the loading of the framework with bundled
 * commands.
 *
 * This only contains classes for the framework.
 *
 * @package WP_CLI\Bootstrap
 */
final class IncludeFrameworkAutoloader implements BootstrapStep {

$autoloader = new Autoloader();

$mappings = [
			'WP_CLI'                   => WP_CLI_ROOT . '/php/WP_CLI',
			'cli'                      => WP_CLI_VENDOR_DIR . '/wp-cli/php-cli-tools/lib/cli',
			'Requests'                 => WP_CLI_VENDOR_DIR . '/rmccue/requests/library/Requests',
			'Symfony\Component\Finder' => WP_CLI_VENDOR_DIR . '/symfony/finder/',
		];

foreach ( $mappings as $namespace => $folder ) {
			$autoloader->add_namespace(
				$namespace,
				$folder
			);
		}

include_once WP_CLI_VENDOR_DIR . '/rmccue/requests/library/Requests.php';
		include_once WP_CLI_VENDOR_DIR . '/wp-cli/mustangostang-spyc/Spyc.php';

$autoloader->register();

return $state;
	}
}
<?php

namespace WP_CLI\Bootstrap;

use WP_CLI;
use WP_CLI\Utils;

/**
 * Class RegisterDeferredCommands.
 *
 * Registers the deferred commands that for which no parent was registered yet.
 * This is necessary, because we can have sub-commands that have no direct
 * parent, like `wp network meta`.
 *
 * @package WP_CLI\Bootstrap
 */
final class RegisterDeferredCommands implements BootstrapStep {

// Process deferred command additions for external packages.
		$this->add_deferred_commands();

// Process deferred command additions for commands added through
		// plugins.
		WP_CLI::add_hook(
			'before_run_command',
			[ $this, 'add_deferred_commands' ]
		);

return $state;
	}

/**
	 * Add deferred commands that are still waiting to be processed.
	 */
	public function add_deferred_commands() {
		$deferred_additions = WP_CLI::get_deferred_additions();

foreach ( $deferred_additions as $name => $addition ) {
			$addition_data = [];
			foreach ( $addition as $addition_key => $addition_value ) {
				// Describe the callable as a string instead of directly printing it
				// for better debug info.
				if ( 'callable' === $addition_key ) {
					$addition_value = Utils\describe_callable( $addition_value );

} elseif ( is_array( $addition_value ) ) {
					$addition_value = json_encode( $addition_value );
				}

$addition_data[] = sprintf(
					'%s: %s',
					$addition_key,
					$addition_value
				);
			}

WP_CLI::debug(
				sprintf(
					'Adding deferred command: %s (%s)',
					$name,
					implode( ', ', $addition_data )
				),
				'bootstrap'
			);

WP_CLI::add_command(
				$name,
				$addition['callable'],
				$addition['args']
			);
		}
	}
}
<?php

namespace WP_CLI\Bootstrap;

use WP_CLI;

/**
 * Class IncludeFallbackAutoloader.
 *
 * Loads the fallback autoloader that is provided through the `composer.json`
 * file.
 *
 * @package WP_CLI\Bootstrap
 */
final class IncludeFallbackAutoloader extends AutoloaderStep {

/**
	 * Get the autoloader paths to scan for an autoloader.
	 *
	 * @return string[]|false Array of strings with autoloader paths, or false
	 *                        to skip.
	 */
	protected function get_autoloader_paths() {
		$autoloader_paths = [
			WP_CLI_VENDOR_DIR . '/autoload.php',
		];

$custom_vendor = $this->get_custom_vendor_folder();
		if ( false !== $custom_vendor ) {
			array_unshift(
				$autoloader_paths,
				WP_CLI_ROOT . '/../../../' . $custom_vendor . '/autoload.php'
			);
		}

WP_CLI::debug(
			sprintf(
				'Fallback autoloader paths: %s',
				implode( ', ', $autoloader_paths )
			),
			'bootstrap'
		);

return $autoloader_paths;
	}
}
<?php

namespace WP_CLI\Bootstrap;

use WP_CLI;

/**
 * Class IncludePackageAutoloader.
 *
 * Loads the package autoloader that includes all the external packages.
 *
 * @package WP_CLI\Bootstrap
 */
final class IncludePackageAutoloader extends AutoloaderStep {

/**
	 * Get the autoloader paths to scan for an autoloader.
	 *
	 * @return string[]|false Array of strings with autoloader paths, or false
	 *                        to skip.
	 */
	protected function get_autoloader_paths() {
		if ( $this->state->getValue( BootstrapState::IS_PROTECTED_COMMAND, false ) ) {
			return false;
		}

$runner        = new RunnerInstance();
		$skip_packages = $runner()->config['skip-packages'];
		if ( true === $skip_packages ) {
			WP_CLI::debug( 'Skipped loading packages.', 'bootstrap' );

return false;
		}

$autoloader_path = $runner()->get_packages_dir_path() . 'vendor/autoload.php';

if ( is_readable( $autoloader_path ) ) {
			WP_CLI::debug(
				'Loading packages from: ' . $autoloader_path,
				'bootstrap'
			);

return [
				$autoloader_path,
			];
		}

return false;
	}

/**
	 * Handle the failure to find an autoloader.
	 *
	 * @return void
	 */
	protected function handle_failure() {
		WP_CLI::debug( 'No package autoload found to load.', 'bootstrap' );
	}
}
<?php

namespace WP_CLI\Bootstrap;

use WP_CLI;
use WP_CLI\Runner;

/**
 * Class RunnerInstance.
 *
 * Convenience class for steps that make use of the `WP_CLI\Runner` object.
 *
 * @package WP_CLI\Bootstrap
 */
final class RunnerInstance {

/**
	 * Return an instance of the `WP_CLI\Runner` object.
	 *
	 * Includes necessary class files first as needed.
	 *
	 * @return Runner
	 */
	public function __invoke() {
		if ( ! class_exists( 'WP_CLI\Runner' ) ) {
			require_once WP_CLI_ROOT . '/php/WP_CLI/Runner.php';
		}

if ( ! class_exists( 'WP_CLI\Configurator' ) ) {
			require_once WP_CLI_ROOT . '/php/WP_CLI/Configurator.php';
		}

return WP_CLI::get_runner();
	}
}
<?php

namespace WP_CLI\Fetchers;

use WP_CLI;
use WP_CLI\ExitException;

/**
 * Fetch a WordPress entity for use in a subcommand.
 */
abstract class Base {

/**
	 * The message to display when an item is not found.
	 *
	 * @var string
	 */
	protected $msg;

/**
	 * @param string $arg The raw CLI argument.
	 * @return mixed|false The item if found; false otherwise.
	 */
	abstract public function get( $arg );

/**
	 * Like get(), but calls WP_CLI::error() instead of returning false.
	 *
	 * @param string $arg The raw CLI argument.
	 * @return mixed The item if found.
	 * @throws ExitException If the item is not found.
	 */
	public function get_check( $arg ) {
		$item = $this->get( $arg );

if ( ! $item ) {
			WP_CLI::error( sprintf( $this->msg, $arg ) );
		}

return $item;
	}

/**
	 * Get multiple items.
	 *
	 * @param array $args The raw CLI arguments.
	 * @return array The list of found items.
	 */
	public function get_many( $args ) {
		$items = [];

foreach ( $args as $arg ) {
			$item = $this->get( $arg );

if ( $item ) {
				$items[] = $item;
			} else {
				WP_CLI::warning( sprintf( $this->msg, $arg ) );
			}
		}

return $items;
	}
}

<?php

namespace WP_CLI\Fetchers;

use WP_Post;

/**
 * Fetch a WordPress post based on one of its attributes.
 */
class Post extends Base {

/**
	 * The message to display when an item is not found.
	 *
	 * @var string
	 */
	protected $msg = 'Could not find the post with ID %d.';

/**
	 * Get a post object by ID
	 *
	 * @param string $arg The raw CLI argument.
	 * @return WP_Post|array|false The item if found; false otherwise.
	 */
	public function get( $arg ) {
		$post = get_post( $arg );

if ( null === $post ) {
			return false;
		}

return $post;
	}
}

<?php

namespace WP_CLI\Fetchers;

use WP_User;

/**
 * Fetch a WordPress user based on one of its attributes.
 */
class User extends Base {

/**
	 * The message to display when an item is not found.
	 *
	 * @var string
	 */
	protected $msg = "Invalid user ID, email or login: '%s'";

/**
	 * Get a user object by one of its identifying attributes.
	 *
	 * @param string $arg The raw CLI argument.
	 * @return WP_User|false The item if found; false otherwise.
	 */
	public function get( $arg ) {

if ( is_numeric( $arg ) ) {
			$user = get_user_by( 'id', $arg );
		} elseif ( is_email( $arg ) ) {
			$user = get_user_by( 'email', $arg );
			// Logins can be emails.
			if ( ! $user ) {
				$user = get_user_by( 'login', $arg );
			}
		} else {
			$user = get_user_by( 'login', $arg );
		}

return $user;
	}
}

<?php

namespace WP_CLI\Fetchers;

use WP_Comment;

/**
 * Fetch a WordPress comment based on one of its attributes.
 */
class Comment extends Base {

/**
	 * The message to display when an item is not found.
	 *
	 * @var string
	 */
	protected $msg = 'Could not find the comment with ID %d.';

/**
	 * Get a comment object by ID
	 *
	 * @param string $arg The raw CLI argument.
	 * @return WP_Comment|array|false The item if found; false otherwise.
	 */
	public function get( $arg ) {
		$comment_id = (int) $arg;
		$comment    = get_comment( $comment_id );

if ( null === $comment ) {
			return false;
		}

return $comment;
	}
}

<?php

namespace WP_CLI\Fetchers;

/**
 * Fetch a WordPress site based on one of its attributes.
 */
class Site extends Base {

/**
	 * The message to display when an item is not found.
	 *
	 * @var string
	 */
	protected $msg = 'Could not find the site with ID %d.';

/**
	 * Get a site object by ID
	 *
	 * @param int $site_id
	 * @return object|false
	 */
	public function get( $site_id ) {
		return $this->get_site( $site_id );
	}

/**
	 * Get site (blog) data for a given id.
	 *
	 * @param string $arg The raw CLI argument.
	 * @return array|false The item if found; false otherwise.
	 */
	private function get_site( $arg ) {
		global $wpdb;

// Load site data
		$site = $wpdb->get_row(
			$wpdb->prepare(
				"SELECT * FROM {$wpdb->blogs} WHERE blog_id = %d",
				$arg
			)
		);

if ( ! empty( $site ) ) {
			// Only care about domain and path which are set here
			return $site;
		}

return false;
	}
}
<?php

namespace WP_CLI\Iterators;

use Iterator;

/**
 * Iterates over results of a query, split into many queries via LIMIT and OFFSET
 *
 * @source https://gist.github.com/4060005
 */
class Query implements Iterator {

private $chunk_size;
	private $query       = '';
	private $count_query = '';

private $global_index     = 0;
	private $index_in_results = 0;
	private $results          = [];
	private $row_count        = 0;
	private $offset           = 0;
	private $db               = null;
	private $depleted         = false;

/**
	 * Creates a new query iterator
	 *
	 * This will loop over all users, but will retrieve them 100 by 100:
	 * <code>
	 * foreach( new Iterators\Query( 'SELECT * FROM users', 100 ) as $user ) {
	 *     tickle( $user );
	 * }
	 * </code>
	 *
	 * @param string $query The query as a string. It shouldn't include any LIMIT clauses
	 * @param int $chunk_size How many rows to retrieve at once; default value is 500 (optional)
	 */
	public function __construct( $query, $chunk_size = 500 ) {
		$this->query = $query;

$this->count_query = preg_replace( '/^.*? FROM /', 'SELECT COUNT(*) FROM ', $query, 1, $replacements );
		if ( 1 !== $replacements ) {
			$this->count_query = '';
		}

$this->chunk_size = $chunk_size;

$this->db = $GLOBALS['wpdb'];
	}

/**
	 * Reduces the offset when the query row count shrinks
	 *
	 * In cases where the iterated rows are being updated such that they will no
	 * longer be returned by the original query, the offset must be reduced to
	 * iterate over all remaining rows.
	 */
	private function adjust_offset_for_shrinking_result_set() {
		if ( empty( $this->count_query ) ) {
			return;
		}

$row_count = $this->db->get_var( $this->count_query );

if ( $row_count < $this->row_count ) {
			$this->offset -= $this->row_count - $row_count;
		}

$this->row_count = $row_count;
	}

private function load_items_from_db() {
		$this->adjust_offset_for_shrinking_result_set();

$query         = $this->query . sprintf( ' LIMIT %d OFFSET %d', $this->chunk_size, $this->offset );
		$this->results = $this->db->get_results( $query );

if ( ! $this->results ) {
			if ( $this->db->last_error ) {
				throw new Exception( 'Database error: ' . $this->db->last_error );
			}

return false;
		}

$this->offset += $this->chunk_size;
		return true;
	}

public function current() {
		return $this->results[ $this->index_in_results ];
	}

public function key() {
		return $this->global_index;
	}

public function next() {
		$this->index_in_results++;
		$this->global_index++;
	}

public function rewind() {
		$this->results          = [];
		$this->global_index     = 0;
		$this->index_in_results = 0;
		$this->offset           = 0;
		$this->depleted         = false;
	}

public function valid() {
		if ( $this->depleted ) {
			return false;
		}

if ( ! isset( $this->results[ $this->index_in_results ] ) ) {
			$items_loaded = $this->load_items_from_db();

if ( ! $items_loaded ) {
				$this->rewind();
				$this->depleted = true;
				return false;
			}

$this->index_in_results = 0;
		}

return true;
	}
}

<?php

namespace WP_CLI\Iterators;

use IteratorIterator;

/**
 * Applies one or more callbacks to an item before returning it.
 */
class Transform extends IteratorIterator {

private $transformers = [];

public function add_transform( $fn ) {
		$this->transformers[] = $fn;
	}

public function current() {
		$value = parent::current();

foreach ( $this->transformers as $fn ) {
			$value = call_user_func( $fn, $value );
		}

return $value;
	}
}

<?php

namespace WP_CLI\Iterators;

/**
 * @source https://gist.github.com/4060005
 */
class Table extends Query {

/**
	 * Creates an iterator over a database table.
	 *
	 * <code>
	 * foreach( new Iterators\Table( array( 'table' => $wpdb->posts, 'fields' => array( 'ID', 'post_content' ) ) ) as $post ) {
	 *     count_words_for( $post->ID, $post->post_content );
	 * }
	 * </code>
	 *
	 * <code>
	 * foreach( new Iterators\Table( array( 'table' => $wpdb->posts, 'where' => 'ID = 8 OR post_status = "publish"' ) ) as $post ) {
	 *     …
	 * }
	 * </code>
	 *
	 * <code>
	 * foreach( new PostIterator( array( 'table' => $wpdb->posts, 'where' => array( 'post_status' => 'publish', 'post_date_gmt BETWEEN x AND y' ) ) ) as $post ) {
	 *     …
	 * }
	 * </code>
	 *
	 * @param array $args Supported arguments:
	 *      table – the name of the database table
	 *      fields – an array of columns to get from the table, '*' is a valid value and the default
	 *      where – conditions for filtering rows. Supports two formats:
	 *              = string – this will be the where clause
	 *              = array – each element is treated as a condition if it's positional, or as column => value if
	 *                it's a key/value pair. In the latter case the value is automatically quoted and escaped
	 *      append - add arbitrary extra SQL
	 */
	public function __construct( $args = [] ) {
		$defaults = [
			'fields'     => '*',
			'where'      => [],
			'append'     => '',
			'table'      => null,
			'chunk_size' => 500,
		];
		$table    = $args['table'];
		$args     = array_merge( $defaults, $args );

$fields     = self::build_fields( $args['fields'] );
		$conditions = self::build_where_conditions( $args['where'] );
		$where_sql  = $conditions ? " WHERE $conditions" : '';
		$query      = "SELECT $fields FROM `$table` $where_sql {$args['append']}";

parent::__construct( $query, $args['chunk_size'] );
	}

private static function build_fields( $fields ) {
		if ( '*' === $fields ) {
			return $fields;
		}

return implode(
			', ',
			array_map(
				function ( $v ) {
					return "`$v`";
				},
				$fields
			)
		);
	}

private static function build_where_conditions( $where ) {
		global $wpdb;
		if ( is_array( $where ) ) {
			$conditions = [];
			foreach ( $where as $key => $value ) {
				if ( is_array( $value ) ) {
					$conditions[] = $key . ' IN (' . esc_sql( implode( ',', $value ) ) . ')';
				} elseif ( is_numeric( $key ) ) {
					$conditions[] = $value;
				} else {
					$conditions[] = $key . $wpdb->prepare( ' = %s', $value );
				}
			}
			$where = implode( ' AND ', $conditions );
		}
		return $where;
	}
}

<?php

namespace WP_CLI\Iterators;

use Countable;
use Iterator;
use SplFileObject;
use WP_CLI;

/**
 * Allows incrementally reading and parsing lines from a CSV file.
 */
class CSV implements Countable, Iterator {

const ROW_SIZE = 4096;

private $filename;
	private $file_pointer;

private $delimiter;
	private $columns;

private $current_index;
	private $current_element;

public function __construct( $filename, $delimiter = ',' ) {
		$this->filename     = $filename;
		$this->file_pointer = fopen( $filename, 'rb' );
		if ( ! $this->file_pointer ) {
			WP_CLI::error( sprintf( 'Could not open file: %s', $filename ) );
		}

$this->delimiter = $delimiter;
	}

public function rewind() {
		rewind( $this->file_pointer );

$this->columns = fgetcsv( $this->file_pointer, self::ROW_SIZE, $this->delimiter );

$this->current_index = -1;
		$this->next();
	}

public function current() {
		return $this->current_element;
	}

public function key() {
		return $this->current_index;
	}

public function next() {
		$this->current_element = false;

while ( true ) {
			$str = fgets( $this->file_pointer );

if ( false === $str ) {
				break;
			}

$row = str_getcsv( $str, $this->delimiter );

$element = [];
			foreach ( $this->columns as $i => $key ) {
				if ( isset( $row[ $i ] ) ) {
					$element[ $key ] = $row[ $i ];
				}
			}

if ( ! empty( $element ) ) {
				$this->current_element = $element;
				$this->current_index++;

break;
			}
		}
	}

public function count() {
		$file = new SplFileObject( $this->filename, 'r' );
		$file->seek( PHP_INT_MAX );
		return $file->key() + 1;
	}

public function valid() {
		return is_array( $this->current_element );
	}
}

<?php

namespace WP_CLI\Iterators;

use RuntimeException;

class Exception extends RuntimeException {}

<?php

namespace WP_CLI;

use DirectoryIterator;
use Exception;
use PharData;
use RecursiveDirectoryIterator;
use RecursiveIteratorIterator;
use WP_CLI;
use ZipArchive;

/**
 * Extract a provided archive file.
 */
class Extractor {

/**
	 * Extract the archive file to a specific destination.
	 *
	 * @param string $dest
	 */
	public static function extract( $tarball_or_zip, $dest ) {
		if ( preg_match( '/\.zip$/', $tarball_or_zip ) ) {
			return self::extract_zip( $tarball_or_zip, $dest );
		}

if ( preg_match( '/\.tar\.gz$/', $tarball_or_zip ) ) {
			return self::extract_tarball( $tarball_or_zip, $dest );
		}

throw new Exception( "Extraction only supported for '.zip' and '.tar.gz' file types." );
	}

/**
	 * Extract a ZIP file to a specific destination.
	 *
	 * @param string $zipfile
	 * @param string $dest
	 */
	private static function extract_zip( $zipfile, $dest ) {
		if ( ! class_exists( 'ZipArchive' ) ) {
			throw new Exception( 'Extracting a zip file requires ZipArchive.' );
		}

// Ensure the destination folder exists or can be created.
		if ( ! self::ensure_dir_exists( $dest ) ) {
			throw new Exception( "Could not create folder '{$dest}'." );
		}

if ( ! file( $zipfile )
			|| ! is_readable( $zipfile )
			|| filesize( $zipfile ) <= 0 ) {
			throw new Exception( "Invalid zip file '{$zipfile}'." );
		}

$zip = new ZipArchive();
		$res = $zip->open( $zipfile );

if ( true === $res ) {
			$name    = Utils\basename( $zipfile );
			$tempdir = Utils\get_temp_dir()
						. uniqid( 'wp-cli-extract-zipfile-', true )
						. "-{$name}";

$zip->extractTo( $tempdir );
			$zip->close();

self::copy_overwrite_files(
				self::get_first_subfolder( $tempdir ),
				$dest
			);

self::rmdir( $tempdir );
		} else {
			throw new Exception(
				sprintf(
					"ZipArchive failed to unzip '%s': %s.",
					$zipfile,
					self::zip_error_msg( $res )
				)
			);
		}
	}

/**
	 * Extract a tarball to a specific destination.
	 *
	 * @param string $tarball
	 * @param string $dest
	 */
	private static function extract_tarball( $tarball, $dest ) {
		// Ensure the destination folder exists or can be created.
		if ( ! self::ensure_dir_exists( $dest ) ) {
			throw new Exception( "Could not create folder '{$dest}'." );
		}

if ( class_exists( 'PharData' ) ) {
			try {
				$phar    = new PharData( $tarball );
				$name    = Utils\basename( $tarball );
				$tempdir = Utils\get_temp_dir()
							. uniqid( 'wp-cli-extract-tarball-', true )
							. "-{$name}";

$phar->extractTo( $tempdir );

self::copy_overwrite_files(
					self::get_first_subfolder( $tempdir ),
					$dest
				);

self::rmdir( $tempdir );
				return;
			} catch ( Exception $e ) {
				WP_CLI::warning(
					"PharData failed, falling back to 'tar xz' ("
					. $e->getMessage() . ')'
				);
				// Fall through to trying `tar xz` below.
			}
		}

// Ensure relative paths cannot be misinterpreted as hostnames.
		// Prepending `./` will force tar to interpret it as a filesystem path.
		if ( self::path_is_relative( $tarball ) ) {
			$tarball = "./{$tarball}";
		}

if ( ! file( $tarball )
			|| ! is_readable( $tarball )
			|| filesize( $tarball ) <= 0 ) {
			throw new Exception( "Invalid zip file '{$tarball}'." );
		}

// Note: directory must exist for tar --directory to work.
		$cmd = Utils\esc_cmd(
			'tar xz --strip-components=1 --directory=%s -f %s',
			$dest,
			$tarball
		);

$process_run = WP_CLI::launch(
			$cmd,
			false /*exit_on_error*/,
			true /*return_detailed*/
		);

if ( 0 !== $process_run->return_code ) {
			throw new Exception(
				sprintf(
					'Failed to execute `%s`: %s.',
					$cmd,
					self::tar_error_msg( $process_run )
				)
			);
		}
	}

/**
	 * Copy files from source directory to destination directory. Source
	 * directory must exist.
	 *
	 * @param string $source
	 * @param string $dest
	 */
	public static function copy_overwrite_files( $source, $dest ) {
		$iterator = new RecursiveIteratorIterator(
			new RecursiveDirectoryIterator(
				$source,
				RecursiveDirectoryIterator::SKIP_DOTS
			),
			RecursiveIteratorIterator::SELF_FIRST
		);

$error = 0;

if ( ! is_dir( $dest ) ) {
			mkdir( $dest, 0777, true );
		}

foreach ( $iterator as $item ) {

$dest_path = $dest . DIRECTORY_SEPARATOR . $iterator->getSubPathName();

if ( $item->isDir() ) {
				if ( ! is_dir( $dest_path ) ) {
					mkdir( $dest_path );
				}
			} else {
				if ( file_exists( $dest_path ) && is_writable( $dest_path ) ) {
					copy( $item, $dest_path );
				} elseif ( ! file_exists( $dest_path ) ) {
					copy( $item, $dest_path );
				} else {
					$error = 1;
					WP_CLI::warning( "Unable to copy '" . $iterator->getSubPathName() . "' to current directory." );
				}
			}
		}

if ( $error ) {
			throw new Exception( 'There was an error overwriting existing files.' );
		}
	}

/**
	 * Delete all files and directories recursively from directory. Directory
	 * must exist.
	 *
	 * @param string $dir
	 */
	public static function rmdir( $dir ) {
		$files = new RecursiveIteratorIterator(
			new RecursiveDirectoryIterator(
				$dir,
				RecursiveDirectoryIterator::SKIP_DOTS
			),
			RecursiveIteratorIterator::CHILD_FIRST
		);

foreach ( $files as $fileinfo ) {
			$todo = $fileinfo->isDir() ? 'rmdir' : 'unlink';
			$path = $fileinfo->getRealPath();
			if ( 0 !== strpos( $path, $fileinfo->getRealPath() ) ) {
				WP_CLI::warning(
					"Temporary file or folder to be removed was found outside of temporary folder, aborting removal: '{$path}'"
				);
			}
			$todo( $path );
		}
		rmdir( $dir );
	}

/**
	 * Return formatted ZipArchive error message from error code.
	 *
	 * @param int $error_code
	 * @return string|int The error message corresponding to the specified
	 *                    code, if found; Other wise the same error code,
	 *                    unmodified.
	 */
	public static function zip_error_msg( $error_code ) {
		// From https://github.com/php/php-src/blob/php-5.3.0/ext/zip/php_zip.c#L2623-L2646.
		static $zip_err_msgs = [
			ZipArchive::ER_OK          => 'No error',
			ZipArchive::ER_MULTIDISK   => 'Multi-disk zip archives not supported',
			ZipArchive::ER_RENAME      => 'Renaming temporary file failed',
			ZipArchive::ER_CLOSE       => 'Closing zip archive failed',
			ZipArchive::ER_SEEK        => 'Seek error',
			ZipArchive::ER_READ        => 'Read error',
			ZipArchive::ER_WRITE       => 'Write error',
			ZipArchive::ER_CRC         => 'CRC error',
			ZipArchive::ER_ZIPCLOSED   => 'Containing zip archive was closed',
			ZipArchive::ER_NOENT       => 'No such file',
			ZipArchive::ER_EXISTS      => 'File already exists',
			ZipArchive::ER_OPEN        => 'Can\'t open file',
			ZipArchive::ER_TMPOPEN     => 'Failure to create temporary file',
			ZipArchive::ER_ZLIB        => 'Zlib error',
			ZipArchive::ER_MEMORY      => 'Malloc failure',
			ZipArchive::ER_CHANGED     => 'Entry has been changed',
			ZipArchive::ER_COMPNOTSUPP => 'Compression method not supported',
			ZipArchive::ER_EOF         => 'Premature EOF',
			ZipArchive::ER_INVAL       => 'Invalid argument',
			ZipArchive::ER_NOZIP       => 'Not a zip archive',
			ZipArchive::ER_INTERNAL    => 'Internal error',
			ZipArchive::ER_INCONS      => 'Zip archive inconsistent',
			ZipArchive::ER_REMOVE      => 'Can\'t remove file',
			ZipArchive::ER_DELETED     => 'Entry has been deleted',
		];

if ( isset( $zip_err_msgs[ $error_code ] ) ) {
			return sprintf(
				'%s (%d)',
				$zip_err_msgs[ $error_code ],
				$error_code
			);
		}
		return $error_code;
	}

/**
	 * Return formatted error message from ProcessRun of tar command.
	 *
	 * @param Processrun $process_run
	 * @return string|int The error message of the process, if available;
	 *                    otherwise the return code.
	 */
	public static function tar_error_msg( $process_run ) {
		$stderr = trim( $process_run->stderr );
		$nl_pos = strpos( $stderr, "\n" );
		if ( false !== $nl_pos ) {
			$stderr = trim( substr( $stderr, 0, $nl_pos ) );
		}
		if ( $stderr ) {
			return sprintf( '%s (%d)', $stderr, $process_run->return_code );
		}
		return $process_run->return_code;
	}

/**
	 * Return the first subfolder within a given path.
	 *
	 * Falls back to the provided path if no subfolder was detected.
	 *
	 * @param string $path Path to find the first subfolder in.
	 * @return string First subfolder, or same as $path if none found.
	 */
	private static function get_first_subfolder( $path ) {
		$iterator = new DirectoryIterator( $path );

foreach ( $iterator as $fileinfo ) {
			if ( $fileinfo->isDir() && ! $fileinfo->isDot() ) {
				return "{$path}/{$fileinfo->getFilename()}";
			}
		}

return $path;
	}

/**
	 * Ensure directory exists.
	 *
	 * @param string $dir Directory to ensure the existence of.
	 * @return bool Whether the existence could be asserted.
	 */
	private static function ensure_dir_exists( $dir ) {
		if ( ! is_dir( $dir ) ) {
			if ( ! @mkdir( $dir, 0777, true ) ) {
				$error = error_get_last();
				WP_CLI::warning(
					sprintf(
						"Failed to create directory '%s': %s.",
						$dir,
						$error['message']
					)
				);
				return false;
			}
		}

return true;
	}

/**
	 * Check whether a path is relative-
	 *
	 * @param string $path Path to check.
	 * @return bool Whether the path is relative.
	 */
	private static function path_is_relative( $path ) {
		if ( '' === $path ) {
			return true;
		}

// Strip scheme.
		$scheme_position = strpos( $path, '://' );
		if ( false !== $scheme_position ) {
			$path = substr( $path, $scheme_position + 3 );
		}

// UNIX root "/" or "\" (Windows style).
		if ( '/' === $path[0] || '\\' === $path[0] ) {
			return false;
		}

// Windows root.
		if ( strlen( $path ) > 1 && ctype_alpha( $path[0] ) && ':' === $path[1] ) {

// Special case: only drive letter, like "C:".
			if ( 2 === strlen( $path ) ) {
				return false;
			}

// Regular Windows path starting with drive letter, like "C:/ or "C:\".
			if ( '/' === $path[2] || '\\' === $path[2] ) {
				return false;
			}
		}

return true;
	}
}
<?php

namespace WP_CLI;

use Mustangostang\Spyc;

/**
 * Handles file- and runtime-based configuration values.
 *
 * @package WP_CLI
 */
class Configurator {

/**
	 * Configurator argument specification.
	 *
	 * @var array
	 */
	private $spec;

/**
	 * Values for keys defined in Configurator spec.
	 *
	 * @var array
	 */
	private $config = [];

/**
	 * Extra config values not specified in spec.
	 *
	 * @var array
	 */
	private $extra_config = [];

/**
	 * Any aliases defined in config files.
	 *
	 * @var array
	 */
	private $aliases = [];

/**
	 * Regex pattern used to define an alias.
	 *
	 * @var string
	 */
	const ALIAS_REGEX = '^@[A-Za-z0-9-_\.\-]+$';

/**
	 * Arguments that can be used in an alias.
	 *
	 * @var array
	 */
	private static $alias_spec = [
		'user',
		'url',
		'path',
		'ssh',
		'http',
	];

/**
	 * @param string $path Path to config spec file.
	 */
	public function __construct( $path ) {
		$this->spec = include $path;

$defaults = [
			'runtime'  => false,
			'file'     => false,
			'synopsis' => '',
			'default'  => null,
			'multiple' => false,
		];

foreach ( $this->spec as $key => &$details ) {
			$details = array_merge( $defaults, $details );

$this->config[ $key ] = $details['default'];
		}
	}

/**
	 * Get declared configuration values as an array.
	 *
	 * @return array
	 */
	public function to_array() {
		return [ $this->config, $this->extra_config ];
	}

/**
	 * Get configuration specification, i.e. list of accepted keys.
	 *
	 * @return array
	 */
	public function get_spec() {
		return $this->spec;
	}

/**
	 * Get any aliases defined in config files.
	 *
	 * @return array
	 */
	public function get_aliases() {
		$runtime_alias = getenv( 'WP_CLI_RUNTIME_ALIAS' );
		if ( false !== $runtime_alias ) {
			$returned_aliases = [];
			foreach ( json_decode( $runtime_alias, true ) as $key => $value ) {
				if ( preg_match( '#' . self::ALIAS_REGEX . '#', $key ) ) {
					$returned_aliases[ $key ] = [];
					foreach ( self::$alias_spec as $i ) {
						if ( isset( $value[ $i ] ) ) {
							$returned_aliases[ $key ][ $i ] = $value[ $i ];
						}
					}
				}
			}
			return $returned_aliases;
		}

return $this->aliases;
	}

/**
	 * Splits a list of arguments into positional, associative and config.
	 *
	 * @param array(string) $arguments
	 * @return array(array)
	 */
	public function parse_args( $arguments ) {
		list( $positional_args, $mixed_args, $global_assoc, $local_assoc ) = self::extract_assoc( $arguments );
		list( $assoc_args, $runtime_config )                               = $this->unmix_assoc_args( $mixed_args, $global_assoc, $local_assoc );
		return [ $positional_args, $assoc_args, $runtime_config ];
	}

/**
	 * Splits positional args from associative args.
	 *
	 * @param array $arguments
	 * @return array(array)
	 */
	public static function extract_assoc( $arguments ) {
		$positional_args = [];
		$assoc_args      = [];
		$global_assoc    = [];
		$local_assoc     = [];

foreach ( $arguments as $arg ) {
			$positional = null;
			$assoc_arg  = null;

if ( preg_match( '|^--no-([^=]+)$|', $arg, $matches ) ) {
				$assoc_arg = [ $matches[1], false ];
			} elseif ( preg_match( '|^--([^=]+)$|', $arg, $matches ) ) {
				$assoc_arg = [ $matches[1], true ];
			} elseif ( preg_match( '|^--([^=]+)=(.*)|s', $arg, $matches ) ) {
				$assoc_arg = [ $matches[1], $matches[2] ];
			} else {
				$positional = $arg;
			}

if ( ! is_null( $assoc_arg ) ) {
				$assoc_args[] = $assoc_arg;
				if ( count( $positional_args ) ) {
					$local_assoc[] = $assoc_arg;
				} else {
					$global_assoc[] = $assoc_arg;
				}
			} elseif ( ! is_null( $positional ) ) {
				$positional_args[] = $positional;
			}
		}

return [ $positional_args, $assoc_args, $global_assoc, $local_assoc ];
	}

/**
	 * Separate runtime parameters from command-specific parameters.
	 *
	 * @param array $mixed_args
	 * @return array
	 */
	private function unmix_assoc_args( $mixed_args, $global_assoc = [], $local_assoc = [] ) {
		$assoc_args     = [];
		$runtime_config = [];

if ( getenv( 'WP_CLI_STRICT_ARGS_MODE' ) ) {
			foreach ( $global_assoc as $tmp ) {
				list( $key, $value ) = $tmp;
				if ( isset( $this->spec[ $key ] ) && false !== $this->spec[ $key ]['runtime'] ) {
					$this->assoc_arg_to_runtime_config( $key, $value, $runtime_config );
				}
			}
			foreach ( $local_assoc as $tmp ) {
				$assoc_args[ $tmp[0] ] = $tmp[1];
			}
		} else {
			foreach ( $mixed_args as $tmp ) {
				list( $key, $value ) = $tmp;

if ( isset( $this->spec[ $key ] ) && false !== $this->spec[ $key ]['runtime'] ) {
					$this->assoc_arg_to_runtime_config( $key, $value, $runtime_config );
				} else {
					$assoc_args[ $key ] = $value;
				}
			}
		}

return [ $assoc_args, $runtime_config ];
	}

/**
	 * Handle turning an $assoc_arg into a runtime arg.
	 */
	private function assoc_arg_to_runtime_config( $key, $value, &$runtime_config ) {
		$details = $this->spec[ $key ];
		if ( isset( $details['deprecated'] ) ) {
			fwrite( STDERR, "WP-CLI: The --{$key} global parameter is deprecated. {$details['deprecated']}\n" );
		}

if ( $details['multiple'] ) {
			$runtime_config[ $key ][] = $value;
		} else {
			$runtime_config[ $key ] = $value;
		}
	}

/**
	 * Load a YAML file of parameters into scope.
	 *
	 * @param string $path Path to YAML file.
	 */
	public function merge_yml( $path, $current_alias = null ) {
		$yaml = self::load_yml( $path );
		if ( ! empty( $yaml['_']['inherit'] ) ) {
			$this->merge_yml( $yaml['_']['inherit'], $current_alias );
		}
		// Prepare the base path for absolutized alias paths.
		$yml_file_dir = $path ? dirname( $path ) : false;
		foreach ( $yaml as $key => $value ) {
			if ( preg_match( '#' . self::ALIAS_REGEX . '#', $key ) ) {
				$this->aliases[ $key ] = [];
				$is_alias              = false;
				foreach ( self::$alias_spec as $i ) {
					if ( isset( $value[ $i ] ) ) {
						if ( 'path' === $i && ! isset( $value['ssh'] ) ) {
							self::absolutize( $value[ $i ], $yml_file_dir );
						}
						$this->aliases[ $key ][ $i ] = $value[ $i ];
						$is_alias                    = true;
					}
				}
				// If it's not an alias, it might be a group of aliases.
				if ( ! $is_alias && is_array( $value ) ) {
					$alias_group = [];
					foreach ( $value as $k ) {
						if ( preg_match( '#' . self::ALIAS_REGEX . '#', $k ) ) {
							$alias_group[] = $k;
						}
					}
					$this->aliases[ $key ] = $alias_group;
				}
			} elseif ( ! isset( $this->spec[ $key ] ) || false === $this->spec[ $key ]['file'] ) {
				if ( isset( $this->extra_config[ $key ] )
					&& ! empty( $yaml['_']['merge'] )
					&& is_array( $this->extra_config[ $key ] )
					&& is_array( $value ) ) {
					$this->extra_config[ $key ] = array_merge( $this->extra_config[ $key ], $value );
				} else {
					$this->extra_config[ $key ] = $value;
				}
			} elseif ( $this->spec[ $key ]['multiple'] ) {
				self::arrayify( $value );
				$this->config[ $key ] = array_merge( $this->config[ $key ], $value );
			} else {
				if ( $current_alias && in_array( $key, self::$alias_spec, true ) ) {
					continue;
				}
				$this->config[ $key ] = $value;
			}
		}
	}

/**
	 * Merge an array of values into the configurator config.
	 *
	 * @param array $config
	 */
	public function merge_array( $config ) {
		foreach ( $this->spec as $key => $details ) {
			if ( false !== $details['runtime'] && isset( $config[ $key ] ) ) {
				$value = $config[ $key ];

if ( 'require' === $key ) {
					$value = Utils\expand_globs( $value );
				}

if ( $details['multiple'] ) {
					self::arrayify( $value );
					$this->config[ $key ] = array_merge( $this->config[ $key ], $value );
				} else {
					$this->config[ $key ] = $value;
				}
			}
		}
	}

/**
	 * Load values from a YAML file.
	 *
	 * @param string $yml_file Path to the YAML file
	 * @return array Declared configuration values
	 */
	private static function load_yml( $yml_file ) {
		if ( ! $yml_file ) {
			return [];
		}

$config = Spyc::YAMLLoad( $yml_file );

// Make sure config-file-relative paths are made absolute.
		$yml_file_dir = dirname( $yml_file );

if ( isset( $config['path'] ) ) {
			self::absolutize( $config['path'], $yml_file_dir );
		}

if ( isset( $config['require'] ) ) {
			self::arrayify( $config['require'] );
			$config['require'] = Utils\expand_globs( $config['require'] );
			foreach ( $config['require'] as &$path ) {
				self::absolutize( $path, $yml_file_dir );
			}
		}

// Backwards compat
		// Command 'core config' was moved to 'config create'.
		if ( isset( $config['core config'] ) ) {
			$config['config create'] = $config['core config'];
			unset( $config['core config'] );
		}
		// Command 'checksum core' was moved to 'core verify-checksums'.
		if ( isset( $config['checksum core'] ) ) {
			$config['core verify-checksums'] = $config['checksum core'];
			unset( $config['checksum core'] );
		}
		// Command 'checksum plugin' was moved to 'plugin verify-checksums'.
		if ( isset( $config['checksum plugin'] ) ) {
			$config['plugin verify-checksums'] = $config['checksum plugin'];
			unset( $config['checksum plugin'] );
		}

return $config;
	}

/**
	 * Conform a variable to an array.
	 *
	 * @param mixed $val A string or an array
	 */
	private static function arrayify( &$val ) {
		$val = (array) $val;
	}

/**
	 * Make a path absolute.
	 *
	 * @param string $path Path to file.
	 * @param string $base Base path to prepend.
	 */
	private static function absolutize( &$path, $base ) {
		if ( ! empty( $path ) && ! Utils\is_path_absolute( $path ) ) {
			$path = $base . DIRECTORY_SEPARATOR . $path;
		}
	}

}
<?php

namespace WP_CLI;

use Composer\DependencyResolver\Rule;
use Composer\EventDispatcher\EventSubscriberInterface;
use Composer\Installer\PackageEvent;
use Composer\Installer\PackageEvents;
use WP_CLI;

/**
 * A Composer Event subscriber so we can keep track of what's happening inside Composer
 */
class PackageManagerEventSubscriber implements EventSubscriberInterface {

/**
	 * Get subscribed events.
	 *
	 * @return array
	 */
	public static function getSubscribedEvents() {

return [
			PackageEvents::PRE_PACKAGE_INSTALL  => 'pre_install',
			PackageEvents::POST_PACKAGE_INSTALL => 'post_install',
		];
	}

/**
	 * Pre-install operation message.
	 *
	 * @param \Composer\Installer\PackageEvent $event
	 *
	 * @return void
	 */
	public static function pre_install( PackageEvent $event ) {
		$operation_message = $event->getOperation()->__toString();
		WP_CLI::log( ' - ' . $operation_message );
	}

/**
	 * Post-install operation log.
	 *
	 * @param \Composer\Installer\PackageEvent $event
	 *
	 * @return void
	 */
	public static function post_install( PackageEvent $event ) {

$operation = $event->getOperation();

// getReason() was removed in Composer v2 without replacement.
		if ( ! method_exists( $operation, 'getReason' ) ) {
			return;
		}

$reason = $operation->getReason();
		if ( $reason instanceof Rule ) {

switch ( $reason->getReason() ) {

case Rule::RULE_PACKAGE_CONFLICT:
				case Rule::RULE_PACKAGE_SAME_NAME:
				case Rule::RULE_PACKAGE_REQUIRES:
					$composer_error = $reason->getPrettyString( $event->getPool() );
					break;

}

if ( ! empty( $composer_error ) ) {
				WP_CLI::log( sprintf( ' - Warning: %s', $composer_error ) );
			}
		}

}

}
<?php

namespace WP_CLI;

use RuntimeException;

/**
 * Class WpOrgApi.
 *
 * This is an abstraction of the WordPress.org API.
 *
 * @see https://codex.wordpress.org/WordPress.org_API
 *
 * @package WP_CLI
 */
final class WpOrgApi {

/**
	 * WordPress.org API root URL.
	 *
	 * @var string
	 */
	const API_ROOT = 'https://api.wordpress.org';

/**
	 * WordPress.org API root URL.
	 *
	 * @var string
	 */
	const DOWNLOADS_ROOT = 'https://downloads.wordpress.org';

/**
	 * Core checksums endpoint.
	 *
	 * @see https://codex.wordpress.org/WordPress.org_API#Checksum
	 *
	 * @var string
	 */
	const CORE_CHECKSUMS_ENDPOINT = self::API_ROOT . '/core/checksums/1.0/';

/**
	 * Plugin checksums endpoint.
	 *
	 * @var string
	 */
	const PLUGIN_CHECKSUMS_ENDPOINT = self::DOWNLOADS_ROOT . '/plugin-checksums/';

/**
	 * Plugin info endpoint.
	 *
	 * @var string
	 */
	const PLUGIN_INFO_ENDPOINT = self::API_ROOT . '/plugins/info/1.2/';

/**
	 * Theme info endpoint.
	 *
	 * @var string
	 */
	const THEME_INFO_ENDPOINT = self::API_ROOT . '/themes/info/1.2/';

/**
	 * Salt endpoint.
	 *
	 * @see https://codex.wordpress.org/WordPress.org_API#Secret_Key
	 *
	 * @var string
	 */
	const SALT_ENDPOINT = self::API_ROOT . '/secret-key/1.1/salt/';

/**
	 * Version check endpoint.
	 *
	 * @see https://codex.wordpress.org/WordPress.org_API#Version_Check
	 *
	 * @var string
	 */
	const VERSION_CHECK_ENDPOINT = self::API_ROOT . '/core/version-check/1.7/';

/**
	 * Options to pass onto the Requests library for executing the remote calls.
	 *
	 * @var array
	 */
	private $options;

/**
	 * WpOrgApi constructor.
	 *
	 * @param array $options Associative array of options to pass to the API abstraction.
	 */
	public function __construct( $options = [] ) {
		$this->options = $options;
	}

/**
	 * Gets the checksums for the given version of WordPress core.
	 *
	 * @param string $version Version string to query.
	 * @param string $locale  Optional. Locale to query. Defaults to 'en_US'.
	 * @return bool|array False on failure. An array of checksums on success.
	 * @throws RuntimeException If the remote request fails.
	 */
	public function get_core_checksums( $version, $locale = 'en_US' ) {
		$url = sprintf(
			'%s?%s',
			self::CORE_CHECKSUMS_ENDPOINT,
			http_build_query( compact( 'version', 'locale' ), null, '&' )
		);

$response = $this->json_get_request( $url );

if (
			! is_array( $response )
			|| ! isset( $response['checksums'] )
			|| ! is_array( $response['checksums'] )
		) {
			return false;
		}

return $response['checksums'];
	}

/**
	 * Gets a core version check.
	 *
	 * @param string $locale Optional. Locale to request a version check for. Defaults to 'en_US'.
	 * @return array|false False on failure. Associative array of the offer on success.
	 * @throws RuntimeException If the remote request failed.
	 */
	public function get_core_version_check( $locale = 'en_US' ) {
		$url = sprintf(
			'%s?%s',
			self::VERSION_CHECK_ENDPOINT,
			http_build_query( compact( 'locale' ), null, '&' )
		);

$response = $this->json_get_request( $url );

if ( ! is_array( $response ) ) {
			return false;
		}

return $response;
	}

/**
	 * Gets a download offer.
	 *
	 * @param string $locale Optional. Locale to request an offer from. Defaults to 'en_US'.
	 * @return array|false False on failure. Associative array of the offer on success.
	 * @throws RuntimeException If the remote request failed.
	 */
	public function get_core_download_offer( $locale = 'en_US' ) {
		$response = $this->get_core_version_check( $locale );

if (
			! is_array( $response )
			|| ! isset( $response['offers'] )
			|| ! is_array( $response['offers'] )
		) {
			return false;
		}

$offer = $response['offers'][0];

if ( ! array_key_exists( 'locale', $offer ) || $locale !== $offer['locale'] ) {
			return false;
		}

return $offer;
	}

/**
	 * Gets the checksums for the given version of plugin.
	 *
	 * @param string $plugin  Plugin slug to query.
	 * @param string $version Version string to query.
	 * @return bool|array False on failure. An array of checksums on success.
	 * @throws RuntimeException If the remote request fails.
	 */
	public function get_plugin_checksums( $plugin, $version ) {
		$url = sprintf(
			'%s%s/%s.json',
			self::PLUGIN_CHECKSUMS_ENDPOINT,
			$plugin,
			$version
		);

$response = $this->json_get_request( $url );

if (
			! is_array( $response )
			|| ! isset( $response['files'] )
			|| ! is_array( $response['files'] )
		) {
			return false;
		}

return $response['files'];
	}

/**
	 * Gets a plugin's info.
	 *
	 * @param string $plugin Plugin slug to query.
	 * @param string $locale Optional. Locale to request info for. Defaults to 'en_US'.
	 * @return array|false False on failure. Associative array of the offer on success.
	 * @throws RuntimeException If the remote request failed.
	 */
	public function get_plugin_info( $plugin, $locale = 'en_US' ) {
		$action  = 'plugin_information';
		$request = [
			'locale' => $locale,
			'slug'   => $plugin,
		];

$url = sprintf(
			'%s?%s',
			self::PLUGIN_INFO_ENDPOINT,
			http_build_query( compact( 'action', 'request' ), null, '&' )
		);

$response = $this->json_get_request( $url );

if ( ! is_array( $response ) ) {
			return false;
		}

return $response;
	}

/**
	 * Gets a theme's info.
	 *
	 * @param string $theme  Theme slug to query.
	 * @param string $locale Optional. Locale to request info for. Defaults to 'en_US'.
	 * @return array|false False on failure. Associative array of the offer on success.
	 * @throws RuntimeException If the remote request failed.
	 */
	public function get_theme_info( $theme, $locale = 'en_US' ) {
		$action  = 'theme_information';
		$request = [
			'locale' => $locale,
			'slug'   => $theme,
		];

$url = sprintf(
			'%s?%s',
			self::THEME_INFO_ENDPOINT,
			http_build_query( compact( 'action', 'request' ), null, '&' )
		);

$response = $this->json_get_request( $url );

if ( ! is_array( $response ) ) {
			return false;
		}

return $response;
	}

/**
	 * Gets a set of salts in the format required by `wp-config.php`.
	 *
	 * @return bool|string False on failure. A string of PHP define() statements on success.
	 * @throws RuntimeException If the remote request fails.
	 */
	public function get_salts() {
		return $this->get_request( self::SALT_ENDPOINT );
	}

/**
	 * Execute a remote GET request.
	 *
	 * @param string $url     URL to execute the GET request on.
	 * @param array  $headers Optional. Associative array of headers.
	 * @param array  $options Optional. Associative array of options.
	 * @return mixed|false False on failure. Decoded JSON on success.
	 * @throws RuntimeException If the JSON could not be decoded.
	 */
	private function json_get_request( $url, $headers = [], $options = [] ) {
		$headers = array_merge(
			[
				'Accept' => 'application/json',
			],
			$headers
		);

$response = $this->get_request( $url, $headers, $options );

if ( false === $response ) {
			return $response;
		}

$data = json_decode( $response, true );

if ( JSON_ERROR_NONE !== json_last_error() ) {
			throw new RuntimeException( 'Failed to decode JSON: ' . json_last_error_msg() );
		}

return $data;
	}

/**
	 * Execute a remote GET request.
	 *
	 * @param string $url     URL to execute the GET request on.
	 * @param array  $headers Optional. Associative array of headers.
	 * @param array  $options Optional. Associative array of options.
	 * @return string|false False on failure. Response body string on success.
	 * @throws RuntimeException If the remote request fails.
	 */
	private function get_request( $url, $headers = [], $options = [] ) {
		$options = array_merge(
			$this->options,
			[
				'halt_on_error' => false,
			],
			$options
		);

$response = Utils\http_request( 'GET', $url, null, $headers, $options );

if (
			! $response->success
			|| 200 > (int) $response->status_code
			|| 300 <= $response->status_code
		) {
			throw new RuntimeException(
				"Couldn't fetch response from {$url} (HTTP code {$response->status_code})."
			);
		}

return trim( $response->body );
	}
}
<?php

namespace WP_CLI;

/**
 * Results of an executed command.
 */
class ProcessRun {

/**
	 * The full command executed by the system.
	 *
	 * @var string
	 */
	public $command;

/**
	 * Captured output from the process' STDOUT.
	 *
	 * @var string
	 */
	public $stdout;

/**
	 * Captured output from the process' STDERR.
	 *
	 * @var string
	 */
	public $stderr;

/**
	 * The path of the working directory for the process or NULL if not specified.
	 *
	 * This defaults to current working directory.
	 *
	 * @var string|null
	 */
	public $cwd;

/**
	 * Environment variables set for this process.
	 *
	 * @var array
	 */
	public $env;

/**
	 * Exit code of the process.
	 *
	 * @var int
	 */
	public $return_code;

/**
	 * The run time of the process.
	 *
	 * @var float
	 */
	public $run_time;

/**
	 * @param array $props Properties of executed command.
	 */
	public function __construct( $props ) {
		foreach ( $props as $key => $value ) {
			$this->$key = $value;
		}
	}

/**
	 * Return properties of executed command as a string.
	 *
	 * @return string
	 */
	public function __toString() {
		$out  = "$ $this->command\n";
		$out .= "$this->stdout\n$this->stderr";
		$out .= "cwd: $this->cwd\n";
		$out .= "run time: $this->run_time\n";
		$out .= "exit status: $this->return_code";

return $out;
	}
}
<?php

namespace WP_CLI\Dispatcher;

use Closure;
use ReflectionClass;
use ReflectionFunction;
use ReflectionMethod;
use WP_CLI;
use WP_CLI\DocParser;
use WP_CLI\Utils;

/**
 * Creates CompositeCommand or Subcommand instances.
 *
 * @package WP_CLI
 */
class CommandFactory {

// Cache of file contents, indexed by filename. Only used if opcache.save_comments is disabled.
	private static $file_contents = [];

/**
	 * Create a new CompositeCommand (or Subcommand if class has __invoke())
	 *
	 * @param string $name Represents how the command should be invoked
	 * @param string $callable A subclass of WP_CLI_Command, a function, or a closure
	 * @param mixed $parent The new command's parent Composite (or Root) command
	 */
	public static function create( $name, $callable, $parent ) {

if ( ( is_object( $callable ) && ( $callable instanceof Closure ) )
			|| ( is_string( $callable ) && function_exists( $callable ) ) ) {
			$reflection = new ReflectionFunction( $callable );
			$command    = self::create_subcommand( $parent, $name, $callable, $reflection );
		} elseif ( is_array( $callable ) && ( is_callable( $callable ) || Utils\is_valid_class_and_method_pair( $callable ) ) ) {
			$reflection = new ReflectionClass( $callable[0] );
			$command    = self::create_subcommand(
				$parent,
				$name,
				[ $callable[0], $callable[1] ],
				$reflection->getMethod( $callable[1] )
			);
		} else {
			$reflection = new ReflectionClass( $callable );
			if ( $reflection->isSubclassOf( '\WP_CLI\Dispatcher\CommandNamespace' ) ) {
				$command = self::create_namespace( $parent, $name, $callable );
			} elseif ( $reflection->hasMethod( '__invoke' ) ) {
				$class   = is_object( $callable ) ? $callable : $reflection->name;
				$command = self::create_subcommand(
					$parent,
					$name,
					[ $class, '__invoke' ],
					$reflection->getMethod( '__invoke' )
				);
			} else {
				$command = self::create_composite_command( $parent, $name, $callable );
			}
		}

return $command;
	}

/**
	 * Clear the file contents cache.
	 */
	public static function clear_file_contents_cache() {
		self::$file_contents = [];
	}

/**
	 * Create a new Subcommand instance.
	 *
	 * @param mixed $parent The new command's parent Composite command
	 * @param string|bool $name Represents how the command should be invoked.
	 * If false, will be determined from the documented subject, represented by `$reflection`.
	 * @param mixed $callable A callable function or closure, or class name and method
	 * @param object $reflection Reflection instance, for doc parsing
	 */
	private static function create_subcommand( $parent, $name, $callable, $reflection ) {
		$doc_comment = self::get_doc_comment( $reflection );
		$docparser   = new DocParser( $doc_comment );

if ( is_array( $callable ) ) {
			if ( ! $name ) {
				$name = $docparser->get_tag( 'subcommand' );
			}

if ( ! $name ) {
				$name = $reflection->name;
			}
		}
		if ( ! $doc_comment ) {
			WP_CLI::debug( null === $doc_comment ? "Failed to get doc comment for {$name}." : "No doc comment for {$name}.", 'commandfactory' );
		}

$when_invoked = function ( $args, $assoc_args ) use ( $callable ) {
			if ( is_array( $callable ) ) {
				$callable[0] = is_object( $callable[0] ) ? $callable[0] : new $callable[0]();
				call_user_func( [ $callable[0], $callable[1] ], $args, $assoc_args );
			} else {
				call_user_func( $callable, $args, $assoc_args );
			}
		};

return new Subcommand( $parent, $name, $docparser, $when_invoked );
	}

/**
	 * Create a new Composite command instance.
	 *
	 * @param mixed $parent The new command's parent Root or Composite command
	 * @param string $name Represents how the command should be invoked
	 * @param mixed $callable
	 */
	private static function create_composite_command( $parent, $name, $callable ) {
		$reflection  = new ReflectionClass( $callable );
		$doc_comment = self::get_doc_comment( $reflection );
		if ( ! $doc_comment ) {
			WP_CLI::debug( null === $doc_comment ? "Failed to get doc comment for {$name}." : "No doc comment for {$name}.", 'commandfactory' );
		}
		$docparser = new DocParser( $doc_comment );

$container = new CompositeCommand( $parent, $name, $docparser );

foreach ( $reflection->getMethods() as $method ) {
			if ( ! self::is_good_method( $method ) ) {
				continue;
			}

$class      = is_object( $callable ) ? $callable : $reflection->name;
			$subcommand = self::create_subcommand( $container, false, [ $class, $method->name ], $method );

$subcommand_name = $subcommand->get_name();

$container->add_subcommand( $subcommand_name, $subcommand );
		}

return $container;
	}

/**
	 * Create a new command namespace instance.
	 *
	 * @param mixed $parent The new namespace's parent Root or Composite command.
	 * @param string $name Represents how the command should be invoked
	 * @param mixed $callable
	 */
	private static function create_namespace( $parent, $name, $callable ) {
		$reflection  = new ReflectionClass( $callable );
		$doc_comment = self::get_doc_comment( $reflection );
		if ( ! $doc_comment ) {
			WP_CLI::debug( null === $doc_comment ? "Failed to get doc comment for {$name}." : "No doc comment for {$name}.", 'commandfactory' );
		}
		$docparser = new DocParser( $doc_comment );

return new CommandNamespace( $parent, $name, $docparser );
	}

/**
	 * Check whether a method is actually callable.
	 *
	 * @param ReflectionMethod $method
	 * @return bool
	 */
	private static function is_good_method( $method ) {
		return $method->isPublic() && ! $method->isStatic() && 0 !== strpos( $method->getName(), '__' );
	}

/**
	 * Gets the document comment. Caters for PHP directive `opcache.save comments` being disabled.
	 *
	 * @param ReflectionMethod|ReflectionClass|ReflectionFunction $reflection Reflection instance.
	 * @return string|false|null Doc comment string if any, false if none (same as `Reflection*::getDocComment()`), null if error.
	 */
	private static function get_doc_comment( $reflection ) {
		$contents    = null;
		$doc_comment = $reflection->getDocComment();

if ( false !== $doc_comment || ! ( ini_get( 'opcache.enable_cli' ) && ! ini_get( 'opcache.save_comments' ) ) ) { // phpcs:ignore PHPCompatibility.IniDirectives.NewIniDirectives
			// Either have doc comment, or no doc comment and save comments enabled - standard situation.
			if ( ! getenv( 'WP_CLI_TEST_GET_DOC_COMMENT' ) ) {
				return $doc_comment;
			}
		}

$filename = $reflection->getFileName();

if ( isset( self::$file_contents[ $filename ] ) ) {
			$contents = self::$file_contents[ $filename ];
		} elseif ( is_readable( $filename ) ) {
			$contents = file_get_contents( $filename );
			if ( is_string( $contents ) && '' !== $contents ) {
				$contents                         = explode( "\n", $contents );
				self::$file_contents[ $filename ] = $contents;
			}
		}

if ( ! empty( $contents ) ) {
			return self::extract_last_doc_comment( implode( "\n", array_slice( $contents, 0, $reflection->getStartLine() ) ) );
		}

WP_CLI::debug( "Could not read contents for filename '{$filename}'.", 'commandfactory' );
		return null;
	}

/**
	 * Returns the last doc comment if any in `$content`.
	 *
	 * @param string $content The content, which should end at the class or function declaration.
	 * @return string|bool The last doc comment if any, or false if none.
	 */
	private static function extract_last_doc_comment( $content ) {
		$content         = trim( $content );
		$comment_end_pos = strrpos( $content, '*/' );
		if ( false === $comment_end_pos ) {
			return false;
		}
		// Make sure comment end belongs to this class/function.
		if ( preg_match_all( '/(?:^|[\s;}])(?:class|function)\s+/', substr( $content, $comment_end_pos + 2 ), $dummy /*needed for PHP 5.3*/ ) > 1 ) {
			return false;
		}
		$content           = substr( $content, 0, $comment_end_pos + 2 );
		$comment_start_pos = strrpos( $content, '/**' );
		if ( false === $comment_start_pos || ( $comment_start_pos + 2 ) === $comment_end_pos ) {
			return false;
		}
		// Make sure comment start belongs to this comment end.
		$comment_end2_pos = strpos( substr( $content, $comment_start_pos ), '*/' );
		if ( false !== $comment_end2_pos && ( $comment_start_pos + $comment_end2_pos ) < $comment_end_pos ) {
			return false;
		}
		// Allow for '/**' within doc comment.
		$subcontent = substr( $content, 0, $comment_start_pos );
		while ( false !== ( $comment_start2_pos = strrpos( $subcontent, '/**' ) ) && false === strpos( $subcontent, '*/', $comment_start2_pos ) ) {
			$comment_start_pos = $comment_start2_pos;
			$subcontent        = substr( $subcontent, 0, $comment_start_pos );
		}
		return substr( $content, $comment_start_pos, $comment_end_pos + 2 );
	}
}
<?php

namespace WP_CLI\Dispatcher;

use WP_CLI;

/**
 * Adds a command namespace without actual functionality.
 *
 * This is meant to provide the means to attach meta information to a namespace
 * when there's no actual command needed.
 *
 * In case a real command gets registered for the same name, it replaces the
 * command namespace.
 *
 * @package WP_CLI
 */
class CommandNamespace extends CompositeCommand {

/**
	 * Show the usage for all subcommands contained
	 * by the composite command.
	 */
	public function show_usage() {
		$methods = $this->get_subcommands();

$i     = 0;
		$count = 0;

foreach ( $methods as $subcommand ) {
			$prefix = ( 0 === $i ) ? 'usage: ' : '   or: ';
			$i++;

if ( \WP_CLI::get_runner()->is_command_disabled( $subcommand ) ) {
				continue;
			}

\WP_CLI::line( $subcommand->get_usage( $prefix ) );
			$count++;
		}

$cmd_name = implode( ' ', array_slice( get_path( $this ), 1 ) );
		$message  = $count > 0
			? "See 'wp help $cmd_name <command>' for more information on a specific command."
			: "The namespace $cmd_name does not contain any usable commands in the current context.";

\WP_CLI::line();
		\WP_CLI::line( $message );

}
}
<?php

namespace WP_CLI\Dispatcher;

use WP_CLI;
use WP_CLI\DocParser;
use WP_CLI\Utils;

/**
 * A non-leaf node in the command tree.
 * Contains one or more Subcommands.
 *
 * @package WP_CLI
 */
class CompositeCommand {

protected $name;
	protected $shortdesc;
	protected $synopsis;
	protected $docparser;

protected $parent;
	protected $subcommands = [];

/**
	 * Instantiate a new CompositeCommand
	 *
	 * @param mixed $parent Parent command (either Root or Composite)
	 * @param string $name Represents how command should be invoked
	 * @param DocParser $docparser
	 */
	public function __construct( $parent, $name, $docparser ) {
		$this->parent = $parent;

$this->name = $name;

$this->shortdesc = $docparser->get_shortdesc();
		$this->longdesc  = $docparser->get_longdesc();
		$this->docparser = $docparser;

$when_to_invoke = $docparser->get_tag( 'when' );
		if ( $when_to_invoke ) {
			WP_CLI::get_runner()->register_early_invoke( $when_to_invoke, $this );
		}
	}

/**
	 * Get the parent composite (or root) command
	 *
	 * @return mixed
	 */
	public function get_parent() {
		return $this->parent;
	}

/**
	 * Add a named subcommand to this composite command's
	 * set of contained subcommands.
	 *
	 * @param string                      $name     Represents how subcommand should be invoked
	 * @param Subcommand|CompositeCommand $command  Cub-command to add.
	 * @param bool                        $override Optional. Whether to override an existing subcommand of the same
	 *                                              name.
	 */
	public function add_subcommand( $name, $command, $override = true ) {
		if ( $override || ! array_key_exists( $name, $this->subcommands ) ) {
			$this->subcommands[ $name ] = $command;
		}
	}

/**
	 * Remove a named subcommand from this composite command's set of contained
	 * subcommands
	 *
	 * @param string $name Represents how subcommand should be invoked
	 */
	public function remove_subcommand( $name ) {
		if ( isset( $this->subcommands[ $name ] ) ) {
			unset( $this->subcommands[ $name ] );
		}
	}

/**
	 * Composite commands always contain subcommands.
	 *
	 * @return true
	 */
	public function can_have_subcommands() {
		return true;
	}

/**
	 * Get the subcommands contained by this composite
	 * command.
	 *
	 * @return array
	 */
	public function get_subcommands() {
		ksort( $this->subcommands );

return $this->subcommands;
	}

/**
	 * Get the name of this composite command.
	 *
	 * @return string
	 */
	public function get_name() {
		return $this->name;
	}

/**
	 * Get the short description for this composite
	 * command.
	 *
	 * @return string
	 */
	public function get_shortdesc() {
		return $this->shortdesc;
	}

/**
	 * Set the short description for this composite command.
	 *
	 * @param string $shortdesc
	 */
	public function set_shortdesc( $shortdesc ) {
		$this->shortdesc = Utils\normalize_eols( $shortdesc );
	}

/**
	 * Get the long description for this composite
	 * command.
	 *
	 * @return string
	 */
	public function get_longdesc() {
		return $this->longdesc . $this->get_global_params();
	}

/**
	 * Set the long description for this composite command
	 *
	 * @param string $longdesc
	 */
	public function set_longdesc( $longdesc ) {
		$this->longdesc = Utils\normalize_eols( $longdesc );
	}

/**
	 * Get the synopsis for this composite command.
	 * As a collection of subcommands, the composite
	 * command is only intended to invoke those
	 * subcommands.
	 *
	 * @return string
	 */
	public function get_synopsis() {
		return '<command>';
	}

/**
	 * Get the usage for this composite command.
	 *
	 * @return string
	 */
	public function get_usage( $prefix ) {
		return sprintf(
			'%s%s %s',
			$prefix,
			implode( ' ', get_path( $this ) ),
			$this->get_synopsis()
		);
	}

/**
	 * Show the usage for all subcommands contained
	 * by the composite command.
	 */
	public function show_usage() {
		$methods = $this->get_subcommands();

$i = 0;

foreach ( $methods as $subcommand ) {
			$prefix = ( 0 === $i ) ? 'usage: ' : '   or: ';
			$i++;

if ( WP_CLI::get_runner()->is_command_disabled( $subcommand ) ) {
				continue;
			}

WP_CLI::line( $subcommand->get_usage( $prefix ) );
		}

$cmd_name = implode( ' ', array_slice( get_path( $this ), 1 ) );

WP_CLI::line();
		WP_CLI::line( "See 'wp help $cmd_name <command>' for more information on a specific command." );
	}

/**
	 * When a composite command is invoked, it shows usage
	 * docs for its subcommands.
	 *
	 * @param array $args
	 * @param array $assoc_args
	 * @param array $extra_args
	 */
	public function invoke( $args, $assoc_args, $extra_args ) {
		$this->show_usage();
	}

/**
	 * Given supplied arguments, find a contained
	 * subcommand
	 *
	 * @param array $args
	 * @return Subcommand|false
	 */
	public function find_subcommand( &$args ) {
		$name = array_shift( $args );

$subcommands = $this->get_subcommands();

if ( ! isset( $subcommands[ $name ] ) ) {
			$aliases = self::get_aliases( $subcommands );

if ( isset( $aliases[ $name ] ) ) {
				$name = $aliases[ $name ];
			}
		}

if ( ! isset( $subcommands[ $name ] ) ) {
			return false;
		}

return $subcommands[ $name ];
	}

/**
	 * Get any registered aliases for this composite command's
	 * subcommands.
	 *
	 * @param array $subcommands
	 * @return array
	 */
	private static function get_aliases( $subcommands ) {
		$aliases = [];

foreach ( $subcommands as $name => $subcommand ) {
			$alias = $subcommand->get_alias();
			if ( $alias ) {
				$aliases[ $alias ] = $name;
			}
		}

return $aliases;
	}

/**
	 * Composite commands can only be known by one name.
	 *
	 * @return false
	 */
	public function get_alias() {
		return false;
	}

/***
	 * Get the list of global parameters
	 *
	 * @param string $root_command whether to include or not root command specific description
	 * @return string
	 */
	protected function get_global_params( $root_command = false ) {
		$binding                 = [];
		$binding['root_command'] = $root_command;

if ( ! $this->can_have_subcommands() || ( is_object( $this->parent ) && get_class( $this->parent ) === 'WP_CLI\Dispatcher\CompositeCommand' ) ) {
			$binding['is_subcommand'] = true;
		}

foreach ( WP_CLI::get_configurator()->get_spec() as $key => $details ) {
			if ( false === $details['runtime'] ) {
				continue;
			}

if ( isset( $details['deprecated'] ) ) {
				continue;
			}

if ( isset( $details['hidden'] ) ) {
				continue;
			}

if ( true === $details['runtime'] ) {
				$synopsis = "--[no-]$key";
			} else {
				$synopsis = "--$key" . $details['runtime'];
			}

// Check if global parameters synopsis should be displayed or not.
			if ( 'true' !== getenv( 'WP_CLI_SUPPRESS_GLOBAL_PARAMS' ) ) {
				$binding['parameters'][]   = [
					'synopsis' => $synopsis,
					'desc'     => $details['desc'],
				];
				$binding['has_parameters'] = true;
			}
		}

if ( $this->get_subcommands() ) {
			$binding['has_subcommands'] = true;
		}

return Utils\mustache_render( 'man-params.mustache', $binding );
	}
}
<?php

namespace WP_CLI\Dispatcher;

use WP_CLI\Utils;

/**
 * The root node in the command tree.
 *
 * @package WP_CLI
 */
class RootCommand extends CompositeCommand {

public function __construct() {
		$this->parent = false;

$this->name = 'wp';

$this->shortdesc = 'Manage WordPress through the command-line.';
	}

/**
	 * Get the human-readable long description.
	 *
	 * @return string
	 */
	public function get_longdesc() {
		return $this->get_global_params( true );
	}

/**
	 * Find a subcommand registered on the root
	 * command.
	 *
	 * @param array $args
	 * @return Subcommand|false
	 */
	public function find_subcommand( &$args ) {
		$command = array_shift( $args );

Utils\load_command( $command );

if ( ! isset( $this->subcommands[ $command ] ) ) {
			return false;
		}

return $this->subcommands[ $command ];
	}
}
<?php

namespace WP_CLI\Dispatcher;

use WP_CLI;
use WP_CLI\DocParser;
use WP_CLI\SynopsisParser;
use WP_CLI\SynopsisValidator;
use WP_CLI\Utils;

/**
 * A leaf node in the command tree.
 *
 * @package WP_CLI
 */
class Subcommand extends CompositeCommand {

private $alias;

private $when_invoked;

public function __construct( $parent, $name, $docparser, $when_invoked ) {
		parent::__construct( $parent, $name, $docparser );

$this->when_invoked = $when_invoked;

$this->alias = $docparser->get_tag( 'alias' );

$this->synopsis = $docparser->get_synopsis();
		if ( ! $this->synopsis && $this->longdesc ) {
			$this->synopsis = self::extract_synopsis( $this->longdesc );
		}
	}

/**
	 * Extract the synopsis from PHPdoc string.
	 *
	 * @param string $longdesc Command docs via PHPdoc
	 * @return string
	 */
	private static function extract_synopsis( $longdesc ) {
		preg_match_all( '/(.+?)[\r\n]+:/', $longdesc, $matches );
		return implode( ' ', $matches[1] );
	}

/**
	 * Subcommands can't have subcommands because they
	 * represent code to be executed.
	 *
	 * @return bool
	 */
	public function can_have_subcommands() {
		return false;
	}

/**
	 * Get the synopsis string for this subcommand.
	 * A synopsis defines what runtime arguments are
	 * expected, useful to humans and argument validation.
	 *
	 * @return string
	 */
	public function get_synopsis() {
		return $this->synopsis;
	}

/**
	 * Set the synopsis string for this subcommand.
	 *
	 * @param string $synopsis
	 */
	public function set_synopsis( $synopsis ) {
		$this->synopsis = $synopsis;
	}

/**
	 * If an alias is set, grant access to it.
	 * Aliases permit subcommands to be instantiated
	 * with a secondary identity.
	 *
	 * @return string
	 */
	public function get_alias() {
		return $this->alias;
	}

/**
	 * Print the usage details to the end user.
	 *
	 * @param string $prefix
	 */
	public function show_usage( $prefix = 'usage: ' ) {
		\WP_CLI::line( $this->get_usage( $prefix ) );
	}

/**
	 * Get the usage of the subcommand as a formatted string.
	 *
	 * @param string $prefix
	 * @return string
	 */
	public function get_usage( $prefix ) {
		return sprintf(
			'%s%s %s',
			$prefix,
			implode( ' ', get_path( $this ) ),
			$this->get_synopsis()
		);
	}

/**
	 * Wrapper for CLI Tools' prompt() method.
	 *
	 * @param string $question
	 * @param string $default
	 * @return string|false
	 */
	private function prompt( $question, $default ) {

$question .= ': ';
		if ( function_exists( 'readline' ) ) {
			return readline( $question );
		}

echo $question;

$ret = stream_get_line( STDIN, 1024, "\n" );
		if ( Utils\is_windows() && "\r" === substr( $ret, -1 ) ) {
			$ret = substr( $ret, 0, -1 );
		}
		return $ret;
	}

/**
	 * Interactively prompt the user for input
	 * based on defined synopsis and passed arguments.
	 *
	 * @param array $args
	 * @param array $assoc_args
	 * @return array
	 */
	private function prompt_args( $args, $assoc_args ) {

$synopsis = $this->get_synopsis();

if ( ! $synopsis ) {
			return [ $args, $assoc_args ];
		}

// To skip the already provided positional arguments, we need to count
		// how many we had already received.
		$arg_index = 0;

$spec = array_filter(
			SynopsisParser::parse( $synopsis ),
			function( $spec_arg ) use ( $args, $assoc_args, &$arg_index ) {
				switch ( $spec_arg['type'] ) {
					case 'positional':
						// Only prompt for the positional arguments that are not
						// yet provided, based purely on number.
						return $arg_index++ >= count( $args );
					case 'generic':
						// Always prompt for generic arguments.
						return true;
					case 'assoc':
					case 'flag':
					default:
						// Prompt for the specific flags that were not provided
						// yet, based on name.
						return ! isset( $assoc_args[ $spec_arg['name'] ] );
				}
			}
		);

$spec = array_values( $spec );

$prompt_args = WP_CLI::get_config( 'prompt' );
		if ( true !== $prompt_args ) {
			$prompt_args = explode( ',', $prompt_args );
		}

// 'positional' arguments are positional (aka zero-indexed)
		// so $args needs to be reset before prompting for new arguments
		$args = [];

foreach ( $spec as $key => $spec_arg ) {

// When prompting for specific arguments (e.g. --prompt=user_pass),
			// ignore all arguments that don't match.
			if ( is_array( $prompt_args ) ) {
				if ( 'assoc' !== $spec_arg['type'] ) {
					continue;
				}
				if ( ! in_array( $spec_arg['name'], $prompt_args, true ) ) {
					continue;
				}
			}

$current_prompt = ( $key + 1 ) . '/' . count( $spec ) . ' ';
			$default        = $spec_arg['optional'] ? '' : false;

// 'generic' permits arbitrary key=value (e.g. [--<field>=<value>] )
			if ( 'generic' === $spec_arg['type'] ) {

list( $key_token, $value_token ) = explode( '=', $spec_arg['token'] );

$repeat = false;
				do {
					if ( ! $repeat ) {
						$key_prompt = $current_prompt . $key_token;
					} else {
						$key_prompt = str_repeat( ' ', strlen( $current_prompt ) ) . $key_token;
					}

$key = $this->prompt( $key_prompt, $default );
					if ( false === $key ) {
						return [ $args, $assoc_args ];
					}

if ( $key ) {
						$key_prompt_count = strlen( $key_prompt ) - strlen( $value_token ) - 1;
						$value_prompt     = str_repeat( ' ', $key_prompt_count ) . '=' . $value_token;

$value = $this->prompt( $value_prompt, $default );
						if ( false === $value ) {
							return [ $args, $assoc_args ];
						}

$assoc_args[ $key ] = $value;

$repeat = true;
					} else {
						$repeat = false;
					}
				} while ( $repeat );

} else {
				$prompt = $current_prompt . $spec_arg['token'];
				if ( 'flag' === $spec_arg['type'] ) {
					$prompt .= ' (Y/n)';
				}

$response = $this->prompt( $prompt, $default );
				if ( false === $response ) {
					return [ $args, $assoc_args ];
				}

if ( $response ) {
					switch ( $spec_arg['type'] ) {
						case 'positional':
							if ( $spec_arg['repeating'] ) {
								$response = explode( ' ', $response );
							} else {
								$response = [ $response ];
							}
							$args = array_merge( $args, $response );
							break;
						case 'assoc':
							$assoc_args[ $spec_arg['name'] ] = $response;
							break;
						case 'flag':
							if ( 'Y' === strtoupper( $response ) ) {
								$assoc_args[ $spec_arg['name'] ] = true;
							}
							break;
					}
				}
			}
		}

return [ $args, $assoc_args ];
	}

/**
	 * Validate the supplied arguments to the command.
	 * Throws warnings or errors if arguments are missing
	 * or invalid.
	 *
	 * @param array $args
	 * @param array $assoc_args
	 * @param array $extra_args
	 * @return array list of invalid $assoc_args keys to unset
	 */
	private function validate_args( $args, $assoc_args, $extra_args ) {
		$synopsis = $this->get_synopsis();
		if ( ! $synopsis ) {
			return [ [], $args, $assoc_args, $extra_args ];
		}

$validator = new SynopsisValidator( $synopsis );

$cmd_path = implode( ' ', get_path( $this ) );
		foreach ( $validator->get_unknown() as $token ) {
			\WP_CLI::warning(
				sprintf(
					'The `%s` command has an invalid synopsis part: %s',
					$cmd_path,
					$token
				)
			);
		}

if ( ! $validator->enough_positionals( $args ) ) {
			$this->show_usage();
			exit( 1 );
		}

$unknown_positionals = $validator->unknown_positionals( $args );
		if ( ! empty( $unknown_positionals ) ) {
			\WP_CLI::error(
				'Too many positional arguments: ' .
				implode( ' ', $unknown_positionals )
			);
		}

$synopsis_spec = SynopsisParser::parse( $synopsis );
		$i             = 0;
		$errors        = [
			'fatal'   => [],
			'warning' => [],
		];
		$mock_doc      = [ $this->get_shortdesc(), '' ];
		$mock_doc      = array_merge( $mock_doc, explode( "\n", $this->get_longdesc() ) );
		$mock_doc      = '/**' . PHP_EOL . '* ' . implode( PHP_EOL . '* ', $mock_doc ) . PHP_EOL . '*/';
		$docparser     = new DocParser( $mock_doc );
		foreach ( $synopsis_spec as $spec ) {
			if ( 'positional' === $spec['type'] ) {
				$spec_args = $docparser->get_arg_args( $spec['name'] );
				if ( ! isset( $args[ $i ] ) ) {
					if ( isset( $spec_args['default'] ) ) {
						$args[ $i ] = $spec_args['default'];
					}
				}
				if ( isset( $spec_args['options'] ) ) {
					if ( ! empty( $spec['repeating'] ) ) {
						do {
							// phpcs:ignore WordPress.PHP.StrictInArray.MissingTrueStrict -- This is a loose comparison by design.
							if ( isset( $args[ $i ] ) && ! in_array( $args[ $i ], $spec_args['options'] ) ) {
								\WP_CLI::error( 'Invalid value specified for positional arg.' );
							}
							$i++;
						} while ( isset( $args[ $i ] ) );
					} else {
						// phpcs:ignore WordPress.PHP.StrictInArray.MissingTrueStrict -- This is a loose comparison by design.
						if ( isset( $args[ $i ] ) && ! in_array( $args[ $i ], $spec_args['options'] ) ) {
							\WP_CLI::error( 'Invalid value specified for positional arg.' );
						}
					}
				}
				$i++;
			} elseif ( 'assoc' === $spec['type'] ) {
				$spec_args = $docparser->get_param_args( $spec['name'] );
				if ( ! isset( $assoc_args[ $spec['name'] ] ) && ! isset( $extra_args[ $spec['name'] ] ) ) {
					if ( isset( $spec_args['default'] ) ) {
						$assoc_args[ $spec['name'] ] = $spec_args['default'];
					}
				}
				if ( isset( $assoc_args[ $spec['name'] ] ) && isset( $spec_args['options'] ) ) {
					$value   = $assoc_args[ $spec['name'] ];
					$options = $spec_args['options'];
					// phpcs:ignore WordPress.PHP.StrictInArray.MissingTrueStrict -- This is a loose comparison by design.
					if ( ! in_array( $value, $options ) ) {
						// Try whether it might be a comma-separated list of multiple values.
						$values = array_map( 'trim', explode( ',', $value ) );
						$count  = count( $values );
						if (
							$count > 1
							&&
							count(
								array_filter(
									$values,
									static function ( $value ) use ( $options ) {
										return in_array( $value, $options, true );
									}
								)
							) === $count
						) {
							continue;
						}
						$errors['fatal'][ $spec['name'] ] = "Invalid value specified for '{$spec['name']}'";
					}
				}
			}
		}

list( $returned_errors, $to_unset ) = $validator->validate_assoc(
			array_merge( \WP_CLI::get_config(), $extra_args, $assoc_args )
		);
		foreach ( [ 'fatal', 'warning' ] as $error_type ) {
			$errors[ $error_type ] = array_merge( $errors[ $error_type ], $returned_errors[ $error_type ] );
		}

if ( 'help' !== $this->name ) {
			foreach ( $validator->unknown_assoc( $assoc_args ) as $key ) {
				$suggestion    = Utils\get_suggestion(
					$key,
					$this->get_parameters( $synopsis_spec ),
					$threshold = 2
				);

$errors['fatal'][] = sprintf(
					'unknown --%s parameter%s',
					$key,
					! empty( $suggestion ) ? PHP_EOL . "Did you mean '--{$suggestion}'?" : ''
				);
			}
		}

if ( ! empty( $errors['fatal'] ) ) {
			$out = 'Parameter errors:';
			foreach ( $errors['fatal'] as $key => $error ) {
				$out .= "\n {$error}";
				$desc = $docparser->get_param_desc( $key );
				if ( '' !== $desc ) {
					$out .= " ({$desc})";
				}
			}

\WP_CLI::error( $out );
		}

array_map( '\\WP_CLI::warning', $errors['warning'] );

return [ $to_unset, $args, $assoc_args, $extra_args ];
	}

/**
	 * Invoke the subcommand with the supplied arguments.
	 * Given a --prompt argument, interactively request input
	 * from the end user.
	 *
	 * @param array $args
	 * @param array $assoc_args
	 */
	public function invoke( $args, $assoc_args, $extra_args ) {
		static $prompted_once = false;

if ( 'help' !== $this->name ) {
			if ( \WP_CLI::get_config( 'prompt' ) && ! $prompted_once ) {
				list( $_args, $assoc_args ) = $this->prompt_args( $args, $assoc_args );
				$args                       = array_merge( $args, $_args );
				$prompted_once              = true;
			}
		}

$extra_positionals = [];
		foreach ( $extra_args as $k => $v ) {
			if ( is_numeric( $k ) ) {
				if ( ! isset( $args[ $k ] ) ) {
					$extra_positionals[ $k ] = $v;
				}
				unset( $extra_args[ $k ] );
			}
		}
		$args += $extra_positionals;

list( $to_unset, $args, $assoc_args, $extra_args ) = $this->validate_args( $args, $assoc_args, $extra_args );

foreach ( $to_unset as $key ) {
			unset( $assoc_args[ $key ] );
		}

$path   = get_path( $this->get_parent() );
		$parent = implode( ' ', array_slice( $path, 1 ) );
		$cmd    = $this->name;
		if ( $parent ) {
			WP_CLI::do_hook( "before_invoke:{$parent}" );
			$cmd = $parent . ' ' . $cmd;
		}
		WP_CLI::do_hook( "before_invoke:{$cmd}" );

// Check if `--prompt` arg passed or not.
		if ( $prompted_once ) {
			// Unset empty args.
			$actual_args = $assoc_args;
			foreach ( $actual_args as $key ) {
				if ( empty( $actual_args[ $key ] ) ) {
					unset( $actual_args[ $key ] );
				}
			}

WP_CLI::log(
				sprintf(
					'wp %s %s',
					$cmd,
					ltrim( Utils\assoc_args_to_str( $actual_args ), ' ' )
				)
			);
		}

call_user_func( $this->when_invoked, $args, array_merge( $extra_args, $assoc_args ) );

if ( $parent ) {
			WP_CLI::do_hook( "after_invoke:{$parent}" );
		}
		WP_CLI::do_hook( "after_invoke:{$cmd}" );
	}

/**
	 * Get an array of parameter names, by merging the command-specific and the
	 * global parameters.
	 *
	 * @param array  $spec Optional. Specification of the current command.
	 *
	 * @return array Array of parameter names
	 */
	private function get_parameters( $spec = [] ) {
		$local_parameters  = array_column( $spec, 'name' );
		$global_parameters = array_column(
			SynopsisParser::parse( $this->get_global_params() ),
			'name'
		);

return array_unique( array_merge( $local_parameters, $global_parameters ) );
	}
}
<?php

namespace WP_CLI\Dispatcher;

use WP_CLI;

/**
 * Controls whether adding of a command should be completed or not.
 *
 * This is needed because we can't reliably pass scalar values by reference
 * through the hooks mechanism. An object is always passed by reference.
 *
 * @package WP_CLI
 */
final class CommandAddition {

/**
	 * Whether the command addition was aborted or not.
	 *
	 * @var bool
	 */
	private $abort = false;

/**
	 * Reason for which the addition was aborted.
	 *
	 * @var string
	 */
	private $reason = '';

/**
	 * Abort the current command addition.
	 *
	 * @param string $reason Reason as to why the addition was aborted.
	 */
	public function abort( $reason = '' ) {
		$this->abort  = true;
		$this->reason = (string) $reason;
	}

/**
	 * Check whether the command addition was aborted.
	 *
	 * @return bool
	 */
	public function was_aborted() {
		return $this->abort;
	}

/**
	 * Get the reason as to why the addition was aborted.
	 *
	 * @return string
	 */
	public function get_reason() {
		return $this->reason;
	}
}
<?php

namespace WP_CLI;

/**
 * Escape route for not doing anything.
 */
final class NoOp {

public function __set( $key, $value ) {
		// do nothing
	}

public function __call( $method, $args ) {
		// do nothing
	}
}

<?php
/*
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * This software consists of voluntary contributions made by many individuals
 * and is licensed under the MIT license. For more information, see
 * <https://www.doctrine-project.org>.
 */

namespace WP_CLI;

/**
 * Doctrine inflector has static methods for inflecting text.
 *
 * The methods in these classes are from several different sources collected
 * across several different php projects and several different authors. The
 * original author names and emails are not known.
 *
 * Pluralize & Singularize implementation are borrowed from CakePHP with some modifications.
 *
 * @link   www.doctrine-project.org
 * @since  1.0
 * @author Konsta Vesterinen <kvesteri@cc.hut.fi>
 * @author Jonathan H. Wage <jonwage@gmail.com>
 */
class Inflector {

/**
	 * Plural inflector rules.
	 *
	 * @var array
	 */
	private static $plural = [
		'rules'       => [
			'/(s)tatus$/i'                         => '\1\2tatuses',
			'/(quiz)$/i'                           => '\1zes',
			'/^(ox)$/i'                            => '\1\2en',
			'/([m|l])ouse$/i'                      => '\1ice',
			'/(matr|vert|ind)(ix|ex)$/i'           => '\1ices',
			'/(x|ch|ss|sh)$/i'                     => '\1es',
			'/([^aeiouy]|qu)y$/i'                  => '\1ies',
			'/(hive)$/i'                           => '\1s',
			'/(?:([^f])fe|([lr])f)$/i'             => '\1\2ves',
			'/sis$/i'                              => 'ses',
			'/([ti])um$/i'                         => '\1a',
			'/(p)erson$/i'                         => '\1eople',
			'/(m)an$/i'                            => '\1en',
			'/(c)hild$/i'                          => '\1hildren',
			'/(f)oot$/i'                           => '\1eet',
			'/(buffal|her|potat|tomat|volcan)o$/i' => '\1\2oes',
			'/(alumn|bacill|cact|foc|fung|nucle|radi|stimul|syllab|termin|vir)us$/i' => '\1i',
			'/us$/i'                               => 'uses',
			'/(alias)$/i'                          => '\1es',
			'/(analys|ax|cris|test|thes)is$/i'     => '\1es',
			'/s$/'                                 => 's',
			'/^$/'                                 => '',
			'/$/'                                  => 's',
		],
		'uninflected' => [
			'.*[nrlm]ese',
			'.*deer',
			'.*fish',
			'.*measles',
			'.*ois',
			'.*pox',
			'.*sheep',
			'people',
			'cookie',
		],
		'irregular'   => [
			'atlas'        => 'atlases',
			'axe'          => 'axes',
			'beef'         => 'beefs',
			'brother'      => 'brothers',
			'cafe'         => 'cafes',
			'chateau'      => 'chateaux',
			'child'        => 'children',
			'cookie'       => 'cookies',
			'corpus'       => 'corpuses',
			'cow'          => 'cows',
			'criterion'    => 'criteria',
			'curriculum'   => 'curricula',
			'demo'         => 'demos',
			'domino'       => 'dominoes',
			'echo'         => 'echoes',
			'foot'         => 'feet',
			'fungus'       => 'fungi',
			'ganglion'     => 'ganglions',
			'genie'        => 'genies',
			'genus'        => 'genera',
			'graffito'     => 'graffiti',
			'hippopotamus' => 'hippopotami',
			'hoof'         => 'hoofs',
			'human'        => 'humans',
			'iris'         => 'irises',
			'leaf'         => 'leaves',
			'loaf'         => 'loaves',
			'man'          => 'men',
			'medium'       => 'media',
			'memorandum'   => 'memoranda',
			'money'        => 'monies',
			'mongoose'     => 'mongooses',
			'motto'        => 'mottoes',
			'move'         => 'moves',
			'mythos'       => 'mythoi',
			'niche'        => 'niches',
			'nucleus'      => 'nuclei',
			'numen'        => 'numina',
			'occiput'      => 'occiputs',
			'octopus'      => 'octopuses',
			'opus'         => 'opuses',
			'ox'           => 'oxen',
			'penis'        => 'penises',
			'person'       => 'people',
			'plateau'      => 'plateaux',
			'runner-up'    => 'runners-up',
			'sex'          => 'sexes',
			'soliloquy'    => 'soliloquies',
			'son-in-law'   => 'sons-in-law',
			'syllabus'     => 'syllabi',
			'testis'       => 'testes',
			'thief'        => 'thieves',
			'tooth'        => 'teeth',
			'tornado'      => 'tornadoes',
			'trilby'       => 'trilbys',
			'turf'         => 'turfs',
			'volcano'      => 'volcanoes',
		],
	];

/**
	 * Singular inflector rules.
	 *
	 * @var array
	 */
	private static $singular = [
		'rules'       => [
			'/(s)tatuses$/i'                         => '\1\2tatus',
			'/^(.*)(menu)s$/i'                       => '\1\2',
			'/(quiz)zes$/i'                          => '\\1',
			'/(matr)ices$/i'                         => '\1ix',
			'/(vert|ind)ices$/i'                     => '\1ex',
			'/^(ox)en/i'                             => '\1',
			'/(alias)(es)*$/i'                       => '\1',
			'/(buffal|her|potat|tomat|volcan)oes$/i' => '\1o',
			'/(alumn|bacill|cact|foc|fung|nucle|radi|stimul|syllab|termin|viri?)i$/i' => '\1us',
			'/([ftw]ax)es/i'                         => '\1',
			'/(analys|ax|cris|test|thes)es$/i'       => '\1is',
			'/(shoe|slave)s$/i'                      => '\1',
			'/(o)es$/i'                              => '\1',
			'/ouses$/'                               => 'ouse',
			'/([^a])uses$/'                          => '\1us',
			'/([m|l])ice$/i'                         => '\1ouse',
			'/(x|ch|ss|sh)es$/i'                     => '\1',
			'/(m)ovies$/i'                           => '\1\2ovie',
			'/(s)eries$/i'                           => '\1\2eries',
			'/([^aeiouy]|qu)ies$/i'                  => '\1y',
			'/([lr])ves$/i'                          => '\1f',
			'/(tive)s$/i'                            => '\1',
			'/(hive)s$/i'                            => '\1',
			'/(drive)s$/i'                           => '\1',
			'/([^fo])ves$/i'                         => '\1fe',
			'/(^analy)ses$/i'                        => '\1sis',
			'/(analy|diagno|^ba|(p)arenthe|(p)rogno|(s)ynop|(t)he)ses$/i' => '\1\2sis',
			'/([ti])a$/i'                            => '\1um',
			'/(p)eople$/i'                           => '\1\2erson',
			'/(m)en$/i'                              => '\1an',
			'/(c)hildren$/i'                         => '\1\2hild',
			'/(f)eet$/i'                             => '\1oot',
			'/(n)ews$/i'                             => '\1\2ews',
			'/eaus$/'                                => 'eau',
			'/^(.*us)$/'                             => '\\1',
			'/s$/i'                                  => '',
		],
		'uninflected' => [
			'.*[nrlm]ese',
			'.*deer',
			'.*fish',
			'.*measles',
			'.*ois',
			'.*pox',
			'.*sheep',
			'.*ss',
		],
		'irregular'   => [
			'criteria' => 'criterion',
			'curves'   => 'curve',
			'emphases' => 'emphasis',
			'foes'     => 'foe',
			'hoaxes'   => 'hoax',
			'media'    => 'medium',
			'neuroses' => 'neurosis',
			'waves'    => 'wave',
			'oases'    => 'oasis',
		],
	];

/**
	 * Words that should not be inflected.
	 *
	 * @var array
	 */
	private static $uninflected = [
		'Amoyese',
		'bison',
		'Borghese',
		'bream',
		'breeches',
		'britches',
		'buffalo',
		'cantus',
		'carp',
		'chassis',
		'clippers',
		'cod',
		'coitus',
		'Congoese',
		'contretemps',
		'corps',
		'debris',
		'diabetes',
		'djinn',
		'eland',
		'elk',
		'equipment',
		'Faroese',
		'flounder',
		'Foochowese',
		'gallows',
		'Genevese',
		'Genoese',
		'Gilbertese',
		'graffiti',
		'headquarters',
		'herpes',
		'hijinks',
		'Hottentotese',
		'information',
		'innings',
		'jackanapes',
		'Kiplingese',
		'Kongoese',
		'Lucchese',
		'mackerel',
		'Maltese',
		'.*?media',
		'mews',
		'moose',
		'mumps',
		'Nankingese',
		'news',
		'nexus',
		'Niasese',
		'Pekingese',
		'Piedmontese',
		'pincers',
		'Pistoiese',
		'pliers',
		'Portuguese',
		'proceedings',
		'rabies',
		'rice',
		'rhinoceros',
		'salmon',
		'Sarawakese',
		'scissors',
		'sea[- ]bass',
		'series',
		'Shavese',
		'shears',
		'siemens',
		'species',
		'staff',
		'swine',
		'testes',
		'trousers',
		'trout',
		'tuna',
		'Vermontese',
		'Wenchowese',
		'whiting',
		'wildebeest',
		'Yengeese',
	];

/**
	 * Method cache array.
	 *
	 * @var array
	 */
	private static $cache = [];

/**
	 * The initial state of Inflector so reset() works.
	 *
	 * @var array
	 */
	private static $initial_state = [];

/**
	 * Converts a word into the format for a Doctrine table name. Converts 'ModelName' to 'model_name'.
	 *
	 * @param string $word The word to tableize.
	 *
	 * @return string The tableized word.
	 */
	public static function tableize( $word ) {
		return strtolower( preg_replace( '~(?<=\\w)([A-Z])~', '_$1', $word ) );
	}

/**
	 * Converts a word into the format for a Doctrine class name. Converts 'table_name' to 'TableName'.
	 *
	 * @param string $word The word to classify.
	 *
	 * @return string The classified word.
	 */
	public static function classify( $word ) {
		return str_replace( ' ', '', ucwords( strtr( $word, '_-', '  ' ) ) );
	}

/**
	 * Camelizes a word. This uses the classify() method and turns the first character to lowercase.
	 *
	 * @param string $word The word to camelize.
	 *
	 * @return string The camelized word.
	 */
	public static function camelize( $word ) {
		return lcfirst( self::classify( $word ) );
	}

/**
	 * Uppercases words with configurable delimeters between words.
	 *
	 * Takes a string and capitalizes all of the words, like PHP's built-in
	 * ucwords function.  This extends that behavior, however, by allowing the
	 * word delimeters to be configured, rather than only separating on
	 * whitespace.
	 *
	 * Here is an example:
	 * <code>
	 * <?php
	 * $string = 'top-o-the-morning to all_of_you!';
	 * echo \Doctrine\Common\Inflector\Inflector::ucwords($string);
	 * // Top-O-The-Morning To All_of_you!
	 *
	 * echo \Doctrine\Common\Inflector\Inflector::ucwords($string, '-_ ');
	 * // Top-O-The-Morning To All_Of_You!
	 * ?>
	 * </code>
	 *
	 * @param string $string The string to operate on.
	 * @param string $delimiters A list of word separators.
	 *
	 * @return string The string with all delimeter-separated words capitalized.
	 */
	public static function ucwords( $string, $delimiters = " \n\t\r\0\x0B-" ) {
		return preg_replace_callback(
			'/[^' . preg_quote( $delimiters, '/' ) . ']+/',
			function( $matches ) {
				return ucfirst( $matches[0] );
			},
			$string
		);
	}

/**
	 * Clears Inflectors inflected value caches, and resets the inflection
	 * rules to the initial values.
	 *
	 * @return void
	 */
	public static function reset() {
		if ( empty( self::$initial_state ) ) {
			self::$initial_state = get_class_vars( 'Inflector' );

return;
		}

foreach ( self::$initial_state as $key => $val ) {
			if ( 'initial_state' !== $key ) {
				self::${$key} = $val;
			}
		}
	}

/**
	 * Adds custom inflection $rules, of either 'plural' or 'singular' $type.
	 *
	 * ### Usage:
	 *
	 * {{{
	 * Inflector::rules('plural', array('/^(inflect)or$/i' => '\1ables'));
	 * Inflector::rules('plural', array(
	 *     'rules' => array('/^(inflect)ors$/i' => '\1ables'),
	 *     'uninflected' => array('dontinflectme'),
	 *     'irregular' => array('red' => 'redlings')
	 * ));
	 * }}}
	 *
	 * @param string  $type  The type of inflection, either 'plural' or 'singular'
	 * @param array   $rules An array of rules to be added.
	 * @param boolean $reset If true, will unset default inflections for all
	 *                       new rules that are being defined in $rules.
	 *
	 * @return void
	 */
	public static function rules( $type, $rules, $reset = false ) {
		foreach ( $rules as $rule => $pattern ) {
			if ( ! is_array( $pattern ) ) {
				continue;
			}

if ( $reset ) {
				self::${$type}[ $rule ] = $pattern;
			} else {
				self::${$type}[ $rule ] = ( 'uninflected' === $rule )
					? array_merge( $pattern, self::${$type}[ $rule ] )
					: $pattern + self::${$type}[ $rule ];
			}

unset( $rules[ $rule ], self::${$type}[ 'cache' . ucfirst( $rule ) ] );

if ( isset( self::${$type}['merged'][ $rule ] ) ) {
				unset( self::${$type}['merged'][ $rule ] );
			}

if ( 'plural' === $type ) {
				self::$cache['pluralize'] = [];
				self::$cache['tableize']  = [];
			} elseif ( 'singular' === $type ) {
				self::$cache['singularize'] = [];
			}
		}

self::${$type}['rules'] = $rules + self::${$type}['rules'];
	}

/**
	 * Returns a word in plural form.
	 *
	 * @param string $word The word in singular form.
	 *
	 * @return string The word in plural form.
	 */
	public static function pluralize( $word ) {
		if ( isset( self::$cache['pluralize'][ $word ] ) ) {
			return self::$cache['pluralize'][ $word ];
		}

if ( ! isset( self::$plural['merged']['irregular'] ) ) {
			self::$plural['merged']['irregular'] = self::$plural['irregular'];
		}

if ( ! isset( self::$plural['merged']['uninflected'] ) ) {
			self::$plural['merged']['uninflected'] = array_merge( self::$plural['uninflected'], self::$uninflected );
		}

if ( ! isset( self::$plural['cacheUninflected'] ) || ! isset( self::$plural['cacheIrregular'] ) ) {
			self::$plural['cacheUninflected'] = '(?:' . implode( '|', self::$plural['merged']['uninflected'] ) . ')';
			self::$plural['cacheIrregular']   = '(?:' . implode( '|', array_keys( self::$plural['merged']['irregular'] ) ) . ')';
		}

if ( preg_match( '/(.*)\\b(' . self::$plural['cacheIrregular'] . ')$/i', $word, $regs ) ) {
			self::$cache['pluralize'][ $word ] = $regs[1] . substr( $word, 0, 1 ) . substr( self::$plural['merged']['irregular'][ strtolower( $regs[2] ) ], 1 );

return self::$cache['pluralize'][ $word ];
		}

if ( preg_match( '/^(' . self::$plural['cacheUninflected'] . ')$/i', $word, $regs ) ) {
			self::$cache['pluralize'][ $word ] = $word;

return $word;
		}

foreach ( self::$plural['rules'] as $rule => $replacement ) {
			if ( preg_match( $rule, $word ) ) {
				self::$cache['pluralize'][ $word ] = preg_replace( $rule, $replacement, $word );

return self::$cache['pluralize'][ $word ];
			}
		}
	}

/**
	 * Returns a word in singular form.
	 *
	 * @param string $word The word in plural form.
	 *
	 * @return string The word in singular form.
	 */
	public static function singularize( $word ) {
		if ( isset( self::$cache['singularize'][ $word ] ) ) {
			return self::$cache['singularize'][ $word ];
		}

if ( ! isset( self::$singular['merged']['uninflected'] ) ) {
			self::$singular['merged']['uninflected'] = array_merge(
				self::$singular['uninflected'],
				self::$uninflected
			);
		}

if ( ! isset( self::$singular['merged']['irregular'] ) ) {
			self::$singular['merged']['irregular'] = array_merge(
				self::$singular['irregular'],
				array_flip( self::$plural['irregular'] )
			);
		}

if ( ! isset( self::$singular['cacheUninflected'] ) || ! isset( self::$singular['cacheIrregular'] ) ) {
			self::$singular['cacheUninflected'] = '(?:' . join( '|', self::$singular['merged']['uninflected'] ) . ')';
			self::$singular['cacheIrregular']   = '(?:' . join( '|', array_keys( self::$singular['merged']['irregular'] ) ) . ')';
		}

if ( preg_match( '/(.*)\\b(' . self::$singular['cacheIrregular'] . ')$/i', $word, $regs ) ) {
			self::$cache['singularize'][ $word ] = $regs[1] . substr( $word, 0, 1 ) . substr( self::$singular['merged']['irregular'][ strtolower( $regs[2] ) ], 1 );

return self::$cache['singularize'][ $word ];
		}

if ( preg_match( '/^(' . self::$singular['cacheUninflected'] . ')$/i', $word, $regs ) ) {
			self::$cache['singularize'][ $word ] = $word;

return $word;
		}

foreach ( self::$singular['rules'] as $rule => $replacement ) {
			if ( preg_match( $rule, $word ) ) {
				self::$cache['singularize'][ $word ] = preg_replace( $rule, $replacement, $word );

return self::$cache['singularize'][ $word ];
			}
		}

self::$cache['singularize'][ $word ] = $word;

return $word;
	}
}
<?php

namespace WP_CLI;

use RuntimeException;

/**
 * Run a system process, and learn what happened.
 */
class Process {
	/**
	 * @var string The full command to execute by the system.
	 */
	private $command;

/**
	 * @var string|null The path of the working directory for the process or NULL if not specified (defaults to current working directory).
	 */
	private $cwd;

/**
	 * @var array Environment variables to set when running the command.
	 */
	private $env;

/**
	 * @var array Descriptor spec for `proc_open()`.
	 */
	private static $descriptors = [
		0 => STDIN,
		1 => [ 'pipe', 'w' ],
		2 => [ 'pipe', 'w' ],
	];

/**
	 * @var bool Whether to log run time info or not.
	 */
	public static $log_run_times = false;

/**
	 * @var array Array of process run time info, keyed by process command, each a 2-element array containing run time and run count.
	 */
	public static $run_times = [];

/**
	 * @param string $command Command to execute.
	 * @param string $cwd Directory to execute the command in.
	 * @param array $env Environment variables to set when running the command.
	 *
	 * @return Process
	 */
	public static function create( $command, $cwd = null, $env = [] ) {
		$proc = new self();

$proc->command = $command;
		$proc->cwd     = $cwd;
		$proc->env     = $env;

return $proc;
	}

private function __construct() {}

/**
	 * Run the command.
	 *
	 * @return ProcessRun
	 */
	public function run() {
		$start_time = microtime( true );

$pipes = [];
		$proc  = Utils\proc_open_compat( $this->command, self::$descriptors, $pipes, $this->cwd, $this->env );

$stdout = stream_get_contents( $pipes[1] );
		fclose( $pipes[1] );

$stderr = stream_get_contents( $pipes[2] );
		fclose( $pipes[2] );

$return_code = proc_close( $proc );

$run_time = microtime( true ) - $start_time;

if ( self::$log_run_times ) {
			if ( ! isset( self::$run_times[ $this->command ] ) ) {
				self::$run_times[ $this->command ] = [ 0, 0 ];
			}
			self::$run_times[ $this->command ][0] += $run_time;
			self::$run_times[ $this->command ][1]++;
		}

return new ProcessRun(
			[
				'stdout'      => $stdout,
				'stderr'      => $stderr,
				'return_code' => $return_code,
				'command'     => $this->command,
				'cwd'         => $this->cwd,
				'env'         => $this->env,
				'run_time'    => $run_time,
			]
		);
	}

/**
	 * Run the command, but throw an Exception on error.
	 *
	 * @return ProcessRun
	 */
	public function run_check() {
		$r = $this->run();

if ( $r->return_code ) {
			throw new RuntimeException( $r );
		}

return $r;
	}

/**
	 * Run the command, but throw an Exception on error.
	 * Same as `run_check()` above, but checks the correct stderr.
	 *
	 * @return ProcessRun
	 */
	public function run_check_stderr() {
		$r = $this->run();

if ( $r->return_code || ! empty( $r->stderr ) ) {
			throw new RuntimeException( $r );
		}

return $r;
	}
}
<?php

/*
 * This file is heavily inspired and use code from Composer(getcomposer.org),
 * in particular Composer/Cache and Composer/Util/FileSystem from 1.0.0-alpha7
 *
 * The original code and this file are both released under MIT license.
 *
 * The copyright holders of the original code are:
 * (c) Nils Adermann <naderman@naderman.de>
 *     Jordi Boggiano <j.boggiano@seld.be>
 */

namespace WP_CLI;

use DateTime;
use Exception;
use Symfony\Component\Finder\Finder;
use WP_CLI;

/**
 * Reads/writes to a filesystem cache
 */
class FileCache {

/**
	 * @var string cache path
	 */
	protected $root;
	/**
	 * @var bool
	 */
	protected $enabled = true;
	/**
	 * @var int files time to live
	 */
	protected $ttl;
	/**
	 * @var int max total size
	 */
	protected $max_size;
	/**
	 * @var string key allowed chars (regex class)
	 */
	protected $whitelist;

/**
	 * @param string $cache_dir  location of the cache
	 * @param int    $ttl        cache files default time to live (expiration)
	 * @param int    $max_size   max total cache size
	 * @param string $whitelist  List of characters that are allowed in path names (used in a regex character class)
	 */
	public function __construct( $cache_dir, $ttl, $max_size, $whitelist = 'a-z0-9._-' ) {
		$this->root      = Utils\trailingslashit( $cache_dir );
		$this->ttl       = (int) $ttl;
		$this->max_size  = (int) $max_size;
		$this->whitelist = $whitelist;

if ( ! $this->ensure_dir_exists( $this->root ) ) {
			$this->enabled = false;
		}

}

/**
	 * Cache is enabled
	 *
	 * @return bool
	 */
	public function is_enabled() {
		return $this->enabled;
	}

/**
	 * Cache root
	 *
	 * @return string
	 */
	public function get_root() {
		return $this->root;
	}

/**
	 * Check if a file is in cache and return its filename
	 *
	 * @param string $key cache key
	 * @param int    $ttl time to live
	 * @return bool|string filename or false
	 */
	public function has( $key, $ttl = null ) {
		if ( ! $this->enabled ) {
			return false;
		}

$filename = $this->filename( $key );

if ( ! file_exists( $filename ) ) {
			return false;
		}

// Use ttl param or global ttl.
		if ( null === $ttl ) {
			$ttl = $this->ttl;
		} elseif ( $this->ttl > 0 ) {
			$ttl = min( (int) $ttl, $this->ttl );
		} else {
			$ttl = (int) $ttl;
		}

//
		if ( $ttl > 0 && ( filemtime( $filename ) + $ttl ) < time() ) {
			if ( $this->ttl > 0 && $ttl >= $this->ttl ) {
				unlink( $filename );
			}
			return false;
		}

return $filename;
	}

/**
	 * Write to cache file
	 *
	 * @param string $key      cache key
	 * @param string $contents file contents
	 * @return bool
	 */
	public function write( $key, $contents ) {
		$filename = $this->prepare_write( $key );

if ( $filename ) {
			return file_put_contents( $filename, $contents ) && touch( $filename );
		}

return false;
	}

/**
	 * Read from cache file
	 *
	 * @param string $key cache key
	 * @param int    $ttl time to live
	 * @return bool|string file contents or false
	 */
	public function read( $key, $ttl = null ) {
		$filename = $this->has( $key, $ttl );

if ( $filename ) {
			return file_get_contents( $filename );
		}

return false;
	}

/**
	 * Copy a file into the cache
	 *
	 * @param string $key    cache key
	 * @param string $source source filename
	 * @return bool
	 */
	public function import( $key, $source ) {
		$filename = $this->prepare_write( $key );

if ( $filename ) {
			return copy( $source, $filename ) && touch( $filename );
		}

return false;
	}

/**
	 * Copy a file out of the cache
	 *
	 * @param string $key    cache key
	 * @param string $target target filename
	 * @param int    $ttl    time to live
	 * @return bool
	 */
	public function export( $key, $target, $ttl = null ) {
		$filename = $this->has( $key, $ttl );

if ( $filename && $this->ensure_dir_exists( dirname( $target ) ) ) {
			return copy( $filename, $target );
		}

return false;
	}

/**
	 * Remove file from cache
	 *
	 * @param string $key cache key
	 * @return bool
	 */
	public function remove( $key ) {
		if ( ! $this->enabled ) {
			return false;
		}

$filename = $this->filename( $key );

if ( file_exists( $filename ) ) {
			return unlink( $filename );
		}

return false;
	}

/**
	 * Clean cache based on time to live and max size
	 *
	 * @return bool
	 */
	public function clean() {
		if ( ! $this->enabled ) {
			return false;
		}

$ttl      = $this->ttl;
		$max_size = $this->max_size;

// Unlink expired files.
		if ( $ttl > 0 ) {
			try {
				$expire = new DateTime();
				$expire->modify( '-' . $ttl . ' seconds' );

$finder = $this->get_finder()->date( 'until ' . $expire->format( 'Y-m-d H:i:s' ) );
				foreach ( $finder as $file ) {
					unlink( $file->getRealPath() );
				}
			} catch ( Exception $e ) {
				WP_CLI::error( $e->getMessage() );
			}
		}

// Unlink older files if max cache size is exceeded.
		if ( $max_size > 0 ) {
			$files = array_reverse( iterator_to_array( $this->get_finder()->sortByAccessedTime()->getIterator() ) );
			$total = 0;

foreach ( $files as $file ) {
				if ( ( $total + $file->getSize() ) <= $max_size ) {
					$total += $file->getSize();
				} else {
					unlink( $file->getRealPath() );
				}
			}
		}

return true;
	}

/**
	 * Remove all cached files.
	 *
	 * @return bool
	 */
	public function clear() {
		if ( ! $this->enabled ) {
			return false;
		}

$finder = $this->get_finder();

foreach ( $finder as $file ) {
			unlink( $file->getRealPath() );
		}

return true;
	}

/**
	 * Remove all cached files except for the newest version of one.
	 *
	 * @return bool
	 */
	public function prune() {
		if ( ! $this->enabled ) {
			return false;
		}

/** @var Finder $finder */
		$finder = $this->get_finder()->sortByName();

$files_to_delete = [];

foreach ( $finder as $file ) {
			$pieces    = explode( '-', $file->getBasename( $file->getExtension() ) );
			$timestamp = end( $pieces );

// No way to compare versions, do nothing.
			if ( ! is_numeric( $timestamp ) ) {
				continue;
			}

$basename_without_timestamp = str_replace( '-' . $timestamp, '', $file->getBasename() );

// There's a file with an older timestamp, delete it.
			if ( isset( $files_to_delete[ $basename_without_timestamp ] ) ) {
				unlink( $files_to_delete[ $basename_without_timestamp ] );
			}

$files_to_delete[ $basename_without_timestamp ] = $file->getRealPath();
		}

return true;
	}

/**
	 * Ensure directory exists
	 *
	 * @param string $dir directory
	 * @return bool
	 */
	protected function ensure_dir_exists( $dir ) {
		if ( ! is_dir( $dir ) ) {
			// Disable the cache if a null device like /dev/null is being used.
			if ( preg_match( '{(^|[\\\\/])(\$null|nul|NUL|/dev/null)([\\\\/]|$)}', $dir ) ) {
				return false;
			}

if ( ! @mkdir( $dir, 0777, true ) ) {
				$message = "Failed to create directory '{$dir}'";
				$error   = error_get_last();
				if ( is_array( $error ) && array_key_exists( 'message', $error ) ) {
					$message .= ": {$error['message']}";
				}
				WP_CLI::warning( "{$message}." );
				return false;
			}
		}

return true;
	}

/**
	 * Prepare cache write
	 *
	 * @param string $key cache key
	 * @return bool|string filename or false
	 */
	protected function prepare_write( $key ) {
		if ( ! $this->enabled ) {
			return false;
		}

$filename = $this->filename( $key );

if ( ! $this->ensure_dir_exists( dirname( $filename ) ) ) {
			return false;
		}

return $filename;
	}

/**
	 * Validate cache key
	 *
	 * @param string $key cache key
	 * @return string relative filename
	 */
	protected function validate_key( $key ) {
		$url_parts = Utils\parse_url( $key, -1, false );
		if ( array_key_exists( 'path', $url_parts ) && ! empty( $url_parts['scheme'] ) ) { // is url
			$parts   = [ 'misc' ];
			$parts[] = $url_parts['scheme'] .
				( empty( $url_parts['host'] ) ? '' : '-' . $url_parts['host'] ) .
				( empty( $url_parts['port'] ) ? '' : '-' . $url_parts['port'] );
			$parts[] = substr( $url_parts['path'], 1 ) .
				( empty( $url_parts['query'] ) ? '' : '-' . $url_parts['query'] );
		} else {
			$key   = str_replace( '\\', '/', $key );
			$parts = explode( '/', ltrim( $key ) );
		}

$parts = preg_replace( "#[^{$this->whitelist}]#i", '-', $parts );

return implode( '/', $parts );
	}

/**
	 * Filename from key
	 *
	 * @param string $key
	 * @return string filename
	 */
	protected function filename( $key ) {
		return $this->root . $this->validate_key( $key );
	}

/**
	 * Get a Finder that iterates in cache root only the files
	 *
	 * @return Finder
	 */
	protected function get_finder() {
		return Finder::create()->in( $this->root )->files();
	}
}
<?php

namespace WP_CLI;

use Composer\IO\NullIO;
use WP_CLI;

/**
 * A Composer IO class so we can provide some level of interactivity from WP-CLI
 */
class ComposerIO extends NullIO {

/**
	 * {@inheritDoc}
	 */
	public function isVerbose() {
		return true;
	}

/**
	 * {@inheritDoc}
	 */
	public function write( $messages, $newline = true, $verbosity = self::NORMAL ) {
		self::output_clean_message( $messages );
	}

/**
	 * {@inheritDoc}
	 */
	public function writeError( $messages, $newline = true, $verbosity = self::NORMAL ) {
		self::output_clean_message( $messages );
	}

private static function output_clean_message( $messages ) {
		$messages = (array) preg_replace( '#<(https?)([^>]+)>#', '$1$2', $messages );
		foreach ( $messages as $message ) {
			// phpcs:ignore WordPress.WP.AlternativeFunctions.strip_tags_strip_tags
			WP_CLI::log( strip_tags( trim( $message ) ) );
		}
	}

}
<?php

// Utilities that depend on WordPress code.

namespace WP_CLI\Utils;

use ReflectionClass;
use ReflectionParameter;
use WP_CLI;
use WP_CLI\UpgraderSkin;

// phpcs:disable WordPress.PHP.IniSet -- Intentional & correct usage.
function wp_debug_mode() {
	if ( WP_CLI::get_config( 'debug' ) ) {
		if ( ! defined( 'WP_DEBUG' ) ) {
			define( 'WP_DEBUG', true );
		}

error_reporting( E_ALL & ~E_DEPRECATED & ~E_STRICT );
	} else {
		if ( WP_DEBUG ) {
			error_reporting( E_ALL );

if ( WP_DEBUG_DISPLAY ) {
				ini_set( 'display_errors', 1 );
			} elseif ( null !== WP_DEBUG_DISPLAY ) {
				ini_set( 'display_errors', 0 );
			}

if ( in_array( strtolower( (string) WP_DEBUG_LOG ), [ 'true', '1' ], true ) ) {
				$log_path = WP_CONTENT_DIR . '/debug.log';
			} elseif ( is_string( WP_DEBUG_LOG ) ) {
				$log_path = WP_DEBUG_LOG;
			} else {
				$log_path = false;
			}

if ( false !== $log_path ) {
				ini_set( 'log_errors', 1 );
				ini_set( 'error_log', $log_path );
			}
		} else {
			error_reporting( E_CORE_ERROR | E_CORE_WARNING | E_COMPILE_ERROR | E_ERROR | E_WARNING | E_PARSE | E_USER_ERROR | E_USER_WARNING | E_RECOVERABLE_ERROR );
		}

if ( defined( 'XMLRPC_REQUEST' ) || defined( 'REST_REQUEST' ) || ( defined( 'DOING_AJAX' ) && DOING_AJAX ) ) {
			ini_set( 'display_errors', 0 );
		}
	}

// XDebug already sends errors to STDERR.
	ini_set( 'display_errors', function_exists( 'xdebug_debug_zval' ) ? false : 'STDERR' );
}
// phpcs:enable

function replace_wp_die_handler() {
	\remove_filter( 'wp_die_handler', '_default_wp_die_handler' );
	\add_filter(
		'wp_die_handler',
		function() {
			return __NAMESPACE__ . '\\wp_die_handler';
		}
	);
}

function wp_die_handler( $message ) {
	if ( $message instanceof \WP_Error ) {
		$message = $message->get_error_message();
	}

$message = wp_clean_error_message( $message );

WP_CLI::error( $message );
}

/**
 * Clean HTML error message so suitable for text display.
 */
function wp_clean_error_message( $message ) {
	$original_message = trim( $message );
	$message          = $original_message;
	if ( preg_match( '|^\<h1>(.+?)</h1>|', $original_message, $matches ) ) {
		$message = $matches[1] . '.';
	}
	if ( preg_match( '|\<p>(.+?)</p>|', $original_message, $matches ) ) {
		$message .= ' ' . $matches[1];
	}

$search_replace = [
		'<code>'  => '`',
		'</code>' => '`',
	];
	$message        = str_replace( array_keys( $search_replace ), array_values( $search_replace ), $message );
	$message        = namespace\strip_tags( $message );
	$message        = html_entity_decode( $message, ENT_COMPAT, 'UTF-8' );

return $message;
}

function wp_redirect_handler( $url ) {
	WP_CLI::warning( 'Some code is trying to do a URL redirect. Backtrace:' );

ob_start();
	debug_print_backtrace();
	fwrite( STDERR, ob_get_clean() );

return $url;
}

function maybe_require( $since, $path ) {
	if ( wp_version_compare( $since, '>=' ) ) {
		require $path;
	}
}

function get_upgrader( $class, $insecure = false ) {
	if ( ! class_exists( '\WP_Upgrader' ) ) {
		require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
	}

$uses_insecure_flag = false;

$reflection = new ReflectionClass( $class );
	if ( $reflection ) {
		$constructor = $reflection->getConstructor();
		if ( $constructor ) {
			$arguments = $constructor->getParameters();
			/** @var ReflectionParameter $argument */
			foreach ( $arguments as $argument ) {
				if ( 'insecure' === $argument->name ) {
					$uses_insecure_flag = true;
					break;
				}
			}
		}
	}

if ( $uses_insecure_flag ) {
		return new $class( new UpgraderSkin(), $insecure );
	} else {
		return new $class( new UpgraderSkin() );
	}
}

/**
 * Converts a plugin basename back into a friendly slug.
 */
function get_plugin_name( $basename ) {
	if ( false === strpos( $basename, '/' ) ) {
		$name = basename( $basename, '.php' );
	} else {
		$name = dirname( $basename );
	}

return $name;
}

function is_plugin_skipped( $file ) {
	$name = get_plugin_name( str_replace( WP_PLUGIN_DIR . '/', '', $file ) );

$skipped_plugins = WP_CLI::get_runner()->config['skip-plugins'];
	if ( true === $skipped_plugins ) {
		return true;
	}

if ( ! is_array( $skipped_plugins ) ) {
		$skipped_plugins = explode( ',', $skipped_plugins );
	}

return in_array( $name, array_filter( $skipped_plugins ), true );
}

function get_theme_name( $path ) {
	return basename( $path );
}

function is_theme_skipped( $path ) {
	$name = get_theme_name( $path );

$skipped_themes = WP_CLI::get_runner()->config['skip-themes'];
	if ( true === $skipped_themes ) {
		return true;
	}

if ( ! is_array( $skipped_themes ) ) {
		$skipped_themes = explode( ',', $skipped_themes );
	}

return in_array( $name, array_filter( $skipped_themes ), true );
}

/**
 * Register the sidebar for unused widgets.
 * Core does this in /wp-admin/widgets.php, which isn't helpful.
 */
function wp_register_unused_sidebar() {

register_sidebar(
		[
			'name'          => __( 'Inactive Widgets' ),
			'id'            => 'wp_inactive_widgets',
			'class'         => 'inactive-sidebar',
			'description'   => __( 'Drag widgets here to remove them from the sidebar but keep their settings.' ),
			'before_widget' => '',
			'after_widget'  => '',
			'before_title'  => '',
			'after_title'   => '',
		]
	);

}

/**
 * Attempts to determine which object cache is being used.
 *
 * Note that the guesses made by this function are based on the WP_Object_Cache classes
 * that define the 3rd party object cache extension. Changes to those classes could render
 * problems with this function's ability to determine which object cache is being used.
 *
 * @return string
 */
function wp_get_cache_type() {
	global $_wp_using_ext_object_cache, $wp_object_cache;

if ( ! empty( $_wp_using_ext_object_cache ) ) {
		// Test for Memcached PECL extension memcached object cache (https://github.com/tollmanz/wordpress-memcached-backend)
		if ( isset( $wp_object_cache->m ) && $wp_object_cache->m instanceof \Memcached ) {
			$message = 'Memcached';

// Test for Memcache PECL extension memcached object cache (https://wordpress.org/extend/plugins/memcached/)
		} elseif ( isset( $wp_object_cache->mc ) ) {
			$is_memcache = true;
			foreach ( $wp_object_cache->mc as $bucket ) {
				if ( ! $bucket instanceof \Memcache && ! $bucket instanceof \Memcached ) {
					$is_memcache = false;
				}
			}

if ( $is_memcache ) {
				$message = 'Memcache';
			}

// Test for Xcache object cache (https://plugins.svn.wordpress.org/xcache/trunk/object-cache.php)
		} elseif ( $wp_object_cache instanceof \XCache_Object_Cache ) {
			$message = 'Xcache';

// Test for WinCache object cache (https://wordpress.org/extend/plugins/wincache-object-cache-backend/)
		} elseif ( class_exists( 'WinCache_Object_Cache' ) ) {
			$message = 'WinCache';

// Test for APC object cache (https://wordpress.org/extend/plugins/apc/)
		} elseif ( class_exists( 'APC_Object_Cache' ) ) {
			$message = 'APC';

// Test for WP Redis (https://wordpress.org/plugins/wp-redis/)
		} elseif ( isset( $wp_object_cache->redis ) && $wp_object_cache->redis instanceof \Redis ) {
			$message = 'Redis';

// Test for Redis Object Cache (https://wordpress.org/plugins/redis-cache/)
		} elseif ( method_exists( $wp_object_cache, 'redis_instance' ) && method_exists( $wp_object_cache, 'redis_status' ) ) {
			$message = 'Redis';

// Test for WP LCache Object cache (https://github.com/lcache/wp-lcache)
		} elseif ( isset( $wp_object_cache->lcache ) && $wp_object_cache->lcache instanceof \LCache\Integrated ) {
			$message = 'WP LCache';

} elseif ( function_exists( 'w3_instance' ) ) {
			$config  = w3_instance( 'W3_Config' );
			$message = 'Unknown';

if ( $config->get_boolean( 'objectcache.enabled' ) ) {
				$message = 'W3TC ' . $config->get_string( 'objectcache.engine' );
			}
		} else {
			$message = 'Unknown';
		}
	} else {
		$message = 'Default';
	}
	return $message;
}

/**
 * Clear WordPress internal object caches.
 *
 * In long-running scripts, the internal caches on `$wp_object_cache` and `$wpdb`
 * can grow to consume gigabytes of memory. Periodically calling this utility
 * can help with memory management.
 *
 * @access public
 * @category System
 * @deprecated 1.5.0
 */
function wp_clear_object_cache() {
	global $wpdb, $wp_object_cache;

$wpdb->queries = [];

if ( ! is_object( $wp_object_cache ) ) {
		return;
	}

// The following are Memcached (Redux) plugin specific (see https://core.trac.wordpress.org/ticket/31463).
	if ( isset( $wp_object_cache->group_ops ) ) {
		$wp_object_cache->group_ops = [];
	}
	if ( isset( $wp_object_cache->stats ) ) {
		$wp_object_cache->stats = [];
	}
	if ( isset( $wp_object_cache->memcache_debug ) ) {
		$wp_object_cache->memcache_debug = [];
	}
	// Used by `WP_Object_Cache` also.
	if ( isset( $wp_object_cache->cache ) ) {
		$wp_object_cache->cache = [];
	}
}

/**
 * Get a set of tables in the database.
 *
 * Interprets common command-line options into a resolved set of table names.
 *
 * @param array $args Provided table names, or tables with wildcards.
 * @param array $assoc_args Optional flags for groups of tables (e.g. --network)
 * @return array
 */
function wp_get_table_names( $args, $assoc_args = [] ) {
	global $wpdb;

$tables = [];

// Abort if incompatible args supplied.
	if ( get_flag_value( $assoc_args, 'base-tables-only' ) && get_flag_value( $assoc_args, 'views-only' ) ) {
		WP_CLI::error( 'You cannot supply --base-tables-only and --views-only at the same time.' );
	}

// Pre-load tables SQL query with Views restriction if needed.
	if ( get_flag_value( $assoc_args, 'base-tables-only' ) ) {
		$tables_sql = 'SHOW FULL TABLES WHERE Table_Type = "BASE TABLE"';

} elseif ( get_flag_value( $assoc_args, 'views-only' ) ) {
		$tables_sql = 'SHOW FULL TABLES WHERE Table_Type = "VIEW"';

}

if ( get_flag_value( $assoc_args, 'all-tables' ) ) {
		if ( empty( $tables_sql ) ) {
			$tables_sql = 'SHOW TABLES';
		}

// phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared -- Query is safe, see above.
		$tables = $wpdb->get_col( $tables_sql, 0 );

} elseif ( get_flag_value( $assoc_args, 'all-tables-with-prefix' ) ) {
		if ( empty( $tables_sql ) ) {
			$tables_sql = $wpdb->prepare( 'SHOW TABLES LIKE %s', esc_like( $wpdb->get_blog_prefix() ) . '%' );
		} else {
			$tables_sql .= sprintf( " AND %s LIKE '%s'", esc_sql_ident( 'Tables_in_' . $wpdb->dbname ), esc_like( $wpdb->get_blog_prefix() ) . '%' );
		}

// phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared -- Query is prepared, see above.
		$tables = $wpdb->get_col( $tables_sql, 0 );

} else {
		$scope = get_flag_value( $assoc_args, 'scope', 'all' );

// Note: BC change 1.5.0, taking scope into consideration for network also.
		if ( get_flag_value( $assoc_args, 'network' ) && is_multisite() ) {
			$network_global_scope = in_array( $scope, [ 'all', 'global', 'ms_global' ], true ) ? ( 'all' === $scope ? 'global' : $scope ) : '';
			$wp_tables            = array_values( $wpdb->tables( $network_global_scope ) );
			if ( in_array( $scope, [ 'all', 'blog' ], true ) ) {
				// Do directly for compat with old WP versions. Note: private, deleted, archived sites are not excluded.
				$blog_ids = $wpdb->get_col( "SELECT blog_id FROM $wpdb->blogs WHERE site_id = $wpdb->siteid" );
				foreach ( $blog_ids as $blog_id ) {
					$wp_tables = array_merge( $wp_tables, array_values( $wpdb->tables( 'blog', true /*prefix*/, $blog_id ) ) );
				}
			}
		} else {
			$wp_tables = array_values( $wpdb->tables( $scope ) );
		}

if ( ! global_terms_enabled() ) {
			// Only include sitecategories when it's actually enabled.
			$wp_tables = array_values( array_diff( $wp_tables, [ $wpdb->sitecategories ] ) );
		}

// Note: BC change 1.5.0, tables are sorted (via TABLES view).
		// phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared -- uses esc_sql_ident() and $wpdb->_escape().
		$tables = $wpdb->get_col( sprintf( "SHOW TABLES WHERE %s IN ('%s')", esc_sql_ident( 'Tables_in_' . $wpdb->dbname ), implode( "', '", $wpdb->_escape( $wp_tables ) ) ) );

if ( get_flag_value( $assoc_args, 'base-tables-only' ) || get_flag_value( $assoc_args, 'views-only' ) ) {
			// Apply Views restriction args if needed.
			// phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared -- Query is prepared, see above.
			$views_query_tables = $wpdb->get_col( $tables_sql, 0 );
			$tables             = array_intersect( $tables, $views_query_tables );
		}
	}

// Filter by `$args`.
	if ( $args ) {
		$args_tables = [];
		foreach ( $args as $arg ) {
			if ( false !== strpos( $arg, '*' ) || false !== strpos( $arg, '?' ) ) {
				$args_tables = array_merge(
					$args_tables,
					array_filter(
						$tables,
						function ( $v ) use ( $arg ) {
							return fnmatch( $arg, $v );
						}
					)
				);
			} else {
				$args_tables[] = $arg;
			}
		}
		$args_tables = array_values( array_unique( $args_tables ) );
		$tables      = array_values( array_intersect( $tables, $args_tables ) );
		if ( empty( $tables ) ) {
			WP_CLI::error( sprintf( "Couldn't find any tables matching: %s", implode( ' ', $args ) ) );
		}
	}

return $tables;
}

/**
 * Failsafe use of the WordPress wp_strip_all_tags() function.
 *
 * Automatically falls back to strip_tags() function if the WP function is not
 * available.
 *
 * @param string $string String to strip the tags from.
 * @return string String devoid of tags.
 */
function strip_tags( $string ) {
	if ( function_exists( 'wp_strip_all_tags' ) ) {
		return \wp_strip_all_tags( $string );
	}

$string = preg_replace(
		'@<(script|style)[^>]*?>.*?</\\1>@si',
		'',
		$string
	);

// phpcs:ignore WordPress.WP.AlternativeFunctions.strip_tags_strip_tags -- Fallback.
	$string = \strip_tags( $string );

return trim( $string );
}
<?php

/**
 * Copied from https://github.com/ramsey/array_column
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 *
 * @copyright Copyright (c) Ben Ramsey (https://benramsey.com)
 * @license https://opensource.org/licenses/MIT MIT
 *
 * @phpcs:disable -- Code from external source. Left as-is for easier compare.
 */
if (!function_exists('array_column')) {
    /**
     * Returns the values from a single column of the input array, identified by
     * the $columnKey.
     *
     * Optionally, you may provide an $indexKey to index the values in the returned
     * array by the values from the $indexKey column in the input array.
     *
     * @param array $input A multi-dimensional array (record set) from which to pull
     *                     a column of values.
     * @param mixed $columnKey The column of values to return. This value may be the
     *                         integer key of the column you wish to retrieve, or it
     *                         may be the string key name for an associative array.
     * @param mixed $indexKey (Optional.) The column to use as the index/keys for
     *                        the returned array. This value may be the integer key
     *                        of the column, or it may be the string key name.
     * @return array
     */
    function array_column($input = null, $columnKey = null, $indexKey = null)
    {
        // Using func_get_args() in order to check for proper number of
        // parameters and trigger errors exactly as the built-in array_column()
        // does in PHP 5.5.
        $argc = func_num_args();
        $params = func_get_args();

if ($argc < 2) {
            trigger_error("array_column() expects at least 2 parameters, {$argc} given", E_USER_WARNING);
            return null;
        }

if (!is_array($params[0])) {
            trigger_error(
                'array_column() expects parameter 1 to be array, ' . gettype($params[0]) . ' given',
                E_USER_WARNING
            );
            return null;
        }

if (!is_int($params[1])
            && !is_float($params[1])
            && !is_string($params[1])
            && $params[1] !== null
            && !(is_object($params[1]) && method_exists($params[1], '__toString'))
        ) {
            trigger_error('array_column(): The column key should be either a string or an integer', E_USER_WARNING);
            return false;
        }

if (isset($params[2])
            && !is_int($params[2])
            && !is_float($params[2])
            && !is_string($params[2])
            && !(is_object($params[2]) && method_exists($params[2], '__toString'))
        ) {
            trigger_error('array_column(): The index key should be either a string or an integer', E_USER_WARNING);
            return false;
        }

$paramsInput = $params[0];
        $paramsColumnKey = ($params[1] !== null) ? (string) $params[1] : null;

$paramsIndexKey = null;
        if (isset($params[2])) {
            if (is_float($params[2]) || is_int($params[2])) {
                $paramsIndexKey = (int) $params[2];
            } else {
                $paramsIndexKey = (string) $params[2];
            }
        }

$resultArray = [];

foreach ($paramsInput as $row) {
            $key = $value = null;
            $keySet = $valueSet = false;

if ($paramsIndexKey !== null && array_key_exists($paramsIndexKey, $row)) {
                $keySet = true;
                $key = (string) $row[$paramsIndexKey];
            }

if ($paramsColumnKey === null) {
                $valueSet = true;
                $value = $row;
            } elseif (is_array($row) && array_key_exists($paramsColumnKey, $row)) {
                $valueSet = true;
                $value = $row[$paramsColumnKey];
            }

if ($valueSet) {
                if ($keySet) {
                    $resultArray[$key] = $value;
                } else {
                    $resultArray[] = $value;
                }
            }

}

return $resultArray;
    }

}
// phpcs:enable
<?php

/**
 * This file contains fallback functions that might have been disabled but are required nevertheless.
 */

if ( PHP_MAJOR_VERSION >= 8 && ! function_exists( 'ini_set' ) ) {
	function ini_set( $option, $value ) {
		return false;
	}
}
<?php
/**
 * A modified version of wp-settings.php, tailored for CLI use.
 *
 * Note: This is not being used anymore from WordPress 4.6-alpha-37575 onwards.
 *
 * @phpcs:disable WordPress.WP.GlobalVariablesOverride -- Setting the globals is the point of this file.
 * @phpcs:disable WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedConstantFound -- These are WP native constants which are needed.
 * @phpcs:disable WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedHooknameFound -- All hook calls in this file are to WP native hooks.
 * @phpcs:disable WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedVariableFound -- Ensuring native WP variables are available.
 */

use WP_CLI\Utils;

/**
 * Stores the location of the WordPress directory of functions, classes, and core content.
 *
 * @since 1.0.0
 */
define( 'WPINC', 'wp-includes' );

// Include files required for initialization.
require ABSPATH . WPINC . '/load.php';
require ABSPATH . WPINC . '/default-constants.php';
require ABSPATH . WPINC . '/plugin.php';

/*
 * These can't be directly globalized in version.php. When updating,
 * we're including version.php from another installation and don't want
 * these values to be overridden if already set.
 */
global $wp_version, $wp_db_version, $tinymce_version, $required_php_version, $required_mysql_version, $wp_local_package;
require ABSPATH . WPINC . '/version.php';

/**
 * If not already configured, `$blog_id` will default to 1 in a single site
 * configuration. In multisite, it will be overridden by default in ms-settings.php.
 *
 * @global int $blog_id
 * @since 2.0.0
 */
global $blog_id;

// Set initial default constants including WP_MEMORY_LIMIT, WP_MAX_MEMORY_LIMIT, WP_DEBUG, WP_CONTENT_DIR and WP_CACHE.
wp_initial_constants();

// Check for the required PHP version and for the MySQL extension or a database drop-in.
wp_check_php_mysql_versions();

// Disable magic quotes at runtime. Magic quotes are added using wpdb later in wp-settings.php.
// phpcs:disable PHPCompatibility.IniDirectives.RemovedIniDirectives,WordPress.PHP.IniSet.Risky
ini_set( 'magic_quotes_runtime', 0 );
ini_set( 'magic_quotes_sybase', 0 );
// phpc:enable PHPCompatibility.IniDirectives.RemovedIniDirectives,WordPress.PHP.IniSet

// WordPress calculates offsets from UTC.
// phpcs:ignore WordPress.DateTime.RestrictedFunctions.timezone_change_date_default_timezone_set
date_default_timezone_set( 'UTC' );

// Turn register_globals off.
wp_unregister_GLOBALS();

// Standardize $_SERVER variables across setups.
wp_fix_server_vars();

// Check if we're in maintenance mode.
// WP-CLI: run enable_maintenance_mode filter early for compat with < WP 4.6
/**
 * Filters whether to enable maintenance mode.
 *
 * This filter runs before it can be used by plugins. It is designed for
 * non-web runtimes. If this filter returns true, maintenance mode will be
 * active and the request will end. If false, the request will be allowed to
 * continue processing even if maintenance mode should be active.
 *
 * @since 4.6.0
 *
 * @param bool $enable_checks Whether to enable maintenance mode. Default true.
 * @param int  $upgrading     The timestamp set in the .maintenance file.
 */
if ( apply_filters( 'enable_maintenance_mode', true ) ) {
	wp_maintenance();
}

// Start loading timer.
timer_start();

// WP-CLI: run enable_wp_debug_mode_checks filter early for compat with < WP 4.6
/**
 * Filters whether to allow the debug mode check to occur.
 *
 * This filter runs before it can be used by plugins. It is designed for
 * non-web run-times. Returning false causes the `WP_DEBUG` and related
 * constants to not be checked and the default php values for errors
 * will be used unless you take care to update them yourself.
 *
 * @since 4.6.0
 *
 * @param bool $enable_debug_mode Whether to enable debug mode checks to occur. Default true.
 */
if ( apply_filters( 'enable_wp_debug_mode_checks', true ) ) {
	wp_debug_mode();
}

/**
 * Filters whether to enable loading of the advanced-cache.php drop-in.
 *
 * This filter runs before it can be used by plugins. It is designed for non-web
 * run-times. If false is returned, advance-cache.php will never be loaded.
 *
 * @since 4.6.0
 *
 * @param bool $enable_advanced_cache Whether to enable loading advanced-cache.php (if present).
 *                                    Default true.
 */
if ( WP_CACHE && apply_filters( 'enable_loading_advanced_cache_dropin', true ) ) {
	// For an advanced caching plugin to use. Uses a static drop-in because you would only want one.
	if ( file_exists( WP_CONTENT_DIR . '/advanced-cache.php' ) ) {
		include WP_CONTENT_DIR . '/advanced-cache.php';
	}
}

// Define WP_LANG_DIR if not set.
wp_set_lang_dir();

// Load early WordPress files.
require ABSPATH . WPINC . '/compat.php';
require ABSPATH . WPINC . '/functions.php';
require ABSPATH . WPINC . '/class-wp.php';
require ABSPATH . WPINC . '/class-wp-error.php';
require ABSPATH . WPINC . '/pomo/mo.php';

// Include the wpdb class and, if present, a db.php database drop-in.
require_wp_db();

// WP-CLI: Handle db error ourselves, instead of waiting for dead_db()
global $wpdb;
if ( ! empty( $wpdb->error ) ) {
	wp_die( $wpdb->error );
}

// Set the database table prefix and the format specifiers for database table columns.
$GLOBALS['table_prefix'] = $table_prefix;
wp_set_wpdb_vars();

// Start the WordPress object cache, or an external object cache if the drop-in is present.
wp_start_object_cache();

// Attach the default filters.
require ABSPATH . WPINC . '/default-filters.php';

// Initialize multisite if enabled.
if ( is_multisite() ) {
	Utils\maybe_require( '4.6-alpha-37575', ABSPATH . WPINC . '/class-wp-site-query.php' );
	Utils\maybe_require( '4.6-alpha-37896', ABSPATH . WPINC . '/class-wp-network-query.php' );
	require ABSPATH . WPINC . '/ms-blogs.php';
	require ABSPATH . WPINC . '/ms-settings.php';
} elseif ( ! defined( 'MULTISITE' ) ) {
	define( 'MULTISITE', false );
}

register_shutdown_function( 'shutdown_action_hook' );

// Stop most of WordPress from being loaded if we just want the basics.
if ( SHORTINIT ) {
	return false;
}

// Load the L10n library.
require_once ABSPATH . WPINC . '/l10n.php';

// WP-CLI: Permit Utils\wp_not_installed() to run on < WP 4.0
apply_filters( 'nocache_headers', [] );

// Run the installer if WordPress is not installed.
wp_not_installed();

// Load most of WordPress.
require ABSPATH . WPINC . '/class-wp-walker.php';
require ABSPATH . WPINC . '/class-wp-ajax-response.php';
require ABSPATH . WPINC . '/formatting.php';
require ABSPATH . WPINC . '/capabilities.php';
Utils\maybe_require( '4.4-beta4-35719', ABSPATH . WPINC . '/class-wp-roles.php' );
Utils\maybe_require( '4.4-beta4-35719', ABSPATH . WPINC . '/class-wp-role.php' );
Utils\maybe_require( '4.4-beta4-35719', ABSPATH . WPINC . '/class-wp-user.php' );
require ABSPATH . WPINC . '/query.php';
Utils\maybe_require( '3.7-alpha-25139', ABSPATH . WPINC . '/date.php' );
require ABSPATH . WPINC . '/theme.php';
require ABSPATH . WPINC . '/class-wp-theme.php';
require ABSPATH . WPINC . '/template.php';
require ABSPATH . WPINC . '/user.php';
Utils\maybe_require( '4.4-beta4-35719', ABSPATH . WPINC . '/class-wp-user-query.php' );
Utils\maybe_require( '4.0', ABSPATH . WPINC . '/session.php' );
require ABSPATH . WPINC . '/meta.php';
Utils\maybe_require( '4.4-beta4-35719', ABSPATH . WPINC . '/class-wp-meta-query.php' );
Utils\maybe_require( '4.5-alpha-35776', ABSPATH . WPINC . '/class-wp-metadata-lazyloader.php' );
require ABSPATH . WPINC . '/general-template.php';
require ABSPATH . WPINC . '/link-template.php';
require ABSPATH . WPINC . '/author-template.php';
require ABSPATH . WPINC . '/post.php';
Utils\maybe_require( '4.4-beta4-35719', ABSPATH . WPINC . '/class-walker-page.php' );
Utils\maybe_require( '4.4-beta4-35719', ABSPATH . WPINC . '/class-walker-page-dropdown.php' );
Utils\maybe_require( '4.6-alpha-37890', ABSPATH . WPINC . '/class-wp-post-type.php' );
Utils\maybe_require( '4.4-beta4-35719', ABSPATH . WPINC . '/class-wp-post.php' );
require ABSPATH . WPINC . '/post-template.php';
Utils\maybe_require( '3.6-alpha-23451', ABSPATH . WPINC . '/revision.php' );
Utils\maybe_require( '3.6-alpha-23451', ABSPATH . WPINC . '/post-formats.php' );
require ABSPATH . WPINC . '/post-thumbnail-template.php';
require ABSPATH . WPINC . '/category.php';
Utils\maybe_require( '4.4-beta4-35719', ABSPATH . WPINC . '/class-walker-category.php' );
Utils\maybe_require( '4.4-beta4-35719', ABSPATH . WPINC . '/class-walker-category-dropdown.php' );
require ABSPATH . WPINC . '/category-template.php';
require ABSPATH . WPINC . '/comment.php';
Utils\maybe_require( '4.4-beta4-35719', ABSPATH . WPINC . '/class-wp-comment.php' );
Utils\maybe_require( '4.4-beta4-35719', ABSPATH . WPINC . '/class-wp-comment-query.php' );
Utils\maybe_require( '4.4-beta4-35719', ABSPATH . WPINC . '/class-walker-comment.php' );
require ABSPATH . WPINC . '/comment-template.php';
require ABSPATH . WPINC . '/rewrite.php';
Utils\maybe_require( '4.4-beta4-35719', ABSPATH . WPINC . '/class-wp-rewrite.php' );
require ABSPATH . WPINC . '/feed.php';
require ABSPATH . WPINC . '/bookmark.php';
require ABSPATH . WPINC . '/bookmark-template.php';
require ABSPATH . WPINC . '/kses.php';
require ABSPATH . WPINC . '/cron.php';
require ABSPATH . WPINC . '/deprecated.php';
require ABSPATH . WPINC . '/script-loader.php';
require ABSPATH . WPINC . '/taxonomy.php';
Utils\maybe_require( '4.4-beta4-35719', ABSPATH . WPINC . '/class-wp-term.php' );
Utils\maybe_require( '4.6-alpha-37575', ABSPATH . WPINC . '/class-wp-term-query.php' );
Utils\maybe_require( '4.4-beta4-35719', ABSPATH . WPINC . '/class-wp-tax-query.php' );
require ABSPATH . WPINC . '/update.php';
require ABSPATH . WPINC . '/canonical.php';
require ABSPATH . WPINC . '/shortcodes.php';
Utils\maybe_require( '4.4-beta4-35719', ABSPATH . WPINC . '/embed.php' );
require ABSPATH . WPINC . '/class-wp-embed.php';
require ABSPATH . WPINC . '/media.php';
Utils\maybe_require( '4.4-alpha-34903', ABSPATH . WPINC . '/class-wp-oembed-controller.php' );
require ABSPATH . WPINC . '/http.php';
require_once ABSPATH . WPINC . '/class-http.php';
Utils\maybe_require( '4.4-beta4-35719', ABSPATH . WPINC . '/class-wp-http-streams.php' );
Utils\maybe_require( '4.4-beta4-35719', ABSPATH . WPINC . '/class-wp-http-curl.php' );
Utils\maybe_require( '4.4-beta4-35719', ABSPATH . WPINC . '/class-wp-http-proxy.php' );
Utils\maybe_require( '4.4-beta4-35719', ABSPATH . WPINC . '/class-wp-http-cookie.php' );
Utils\maybe_require( '4.4-beta4-35719', ABSPATH . WPINC . '/class-wp-http-encoding.php' );
Utils\maybe_require( '4.4-beta4-35719', ABSPATH . WPINC . '/class-wp-http-response.php' );
Utils\maybe_require( '4.6-alpha-37438', ABSPATH . WPINC . '/class-wp-http-requests-response.php' );
require ABSPATH . WPINC . '/widgets.php';
Utils\maybe_require( '4.4-beta4-35719', ABSPATH . WPINC . '/class-wp-widget.php' );
Utils\maybe_require( '4.4-beta4-35719', ABSPATH . WPINC . '/class-wp-widget-factory.php' );
require ABSPATH . WPINC . '/nav-menu.php';
require ABSPATH . WPINC . '/nav-menu-template.php';
require ABSPATH . WPINC . '/admin-bar.php';
Utils\maybe_require( '4.4-alpha-34928', ABSPATH . WPINC . '/rest-api.php' );
Utils\maybe_require( '4.4-beta4-35719', ABSPATH . WPINC . '/rest-api/class-wp-rest-server.php' );
Utils\maybe_require( '4.4-beta4-35719', ABSPATH . WPINC . '/rest-api/class-wp-rest-response.php' );
Utils\maybe_require( '4.4-beta4-35719', ABSPATH . WPINC . '/rest-api/class-wp-rest-request.php' );

// Load multisite-specific files.
if ( is_multisite() ) {
	require ABSPATH . WPINC . '/ms-functions.php';
	require ABSPATH . WPINC . '/ms-default-filters.php';
	require ABSPATH . WPINC . '/ms-deprecated.php';
}

// Define constants that rely on the API to obtain the default value.
// Define must-use plugin directory constants, which may be overridden in the sunrise.php drop-in.
wp_plugin_directory_constants();

$symlinked_plugins_supported = function_exists( 'wp_register_plugin_realpath' );
if ( $symlinked_plugins_supported ) {
	$GLOBALS['wp_plugin_paths'] = [];
}

// Load must-use plugins.
foreach ( wp_get_mu_plugins() as $mu_plugin ) {
	include_once $mu_plugin;
}
unset( $mu_plugin );

// Load network activated plugins.
if ( is_multisite() ) {
	foreach ( wp_get_active_network_plugins() as $network_plugin ) {
		if ( $symlinked_plugins_supported ) {
			wp_register_plugin_realpath( $network_plugin );
		}
		include_once $network_plugin;
	}
	unset( $network_plugin );
}

do_action( 'muplugins_loaded' );

if ( is_multisite() ) {
	ms_cookie_constants();
}

// Define constants after multisite is loaded. Cookie-related constants may be overridden in ms_network_cookies().
wp_cookie_constants();

// Define and enforce our SSL constants.
wp_ssl_constants();

// Create common globals.
require ABSPATH . WPINC . '/vars.php';

// Make taxonomies and posts available to plugins and themes.
// @plugin authors: warning: these get registered again on the init hook.
create_initial_taxonomies();
create_initial_post_types();

// Register the default theme directory root
register_theme_directory( get_theme_root() );

// Load active plugins.
foreach ( wp_get_active_and_valid_plugins() as $plugin ) {
	if ( $symlinked_plugins_supported ) {
		wp_register_plugin_realpath( $plugin );
	}
	include_once $plugin;
}
unset( $plugin, $symlinked_plugins_supported );

// Load pluggable functions.
require ABSPATH . WPINC . '/pluggable.php';
require ABSPATH . WPINC . '/pluggable-deprecated.php';

// Set internal encoding.
wp_set_internal_encoding();

// Run wp_cache_postload() if object cache is enabled and the function exists.
if ( WP_CACHE && function_exists( 'wp_cache_postload' ) ) {
	wp_cache_postload();
}

do_action( 'plugins_loaded' );

// Define constants which affect functionality if not already defined.
wp_functionality_constants();

if ( ! function_exists( 'get_magic_quotes_gpc' ) ) {
	// Provide compat fallback for newer PHP version (7.4+) on older WordPress core versions.
	function get_magic_quotes_gpc() {
		return false;
	}
}

// Add magic quotes and set up $_REQUEST ( $_GET + $_POST )
wp_magic_quotes();

do_action( 'sanitize_comment_cookies' );

/**
 * WordPress Query object
 * @global object $wp_the_query
 * @since 2.0.0
 */
$GLOBALS['wp_the_query'] = new WP_Query();

/**
 * Holds the reference to @see $wp_the_query
 * Use this global for WordPress queries
 * @global object $wp_query
 * @since 1.5.0
 */
$GLOBALS['wp_query'] = $GLOBALS['wp_the_query'];

/**
 * Holds the WordPress Rewrite object for creating pretty URLs
 * @global object $wp_rewrite
 * @since 1.5.0
 */
$GLOBALS['wp_rewrite'] = new WP_Rewrite();

/**
 * WordPress Object
 * @global object $wp
 * @since 2.0.0
 */
$GLOBALS['wp'] = new WP();

/**
 * WordPress Widget Factory Object
 * @global object $wp_widget_factory
 * @since 2.8.0
 */
$GLOBALS['wp_widget_factory'] = new WP_Widget_Factory();

/**
 * WordPress User Roles
 * @global object $wp_roles
 * @since 2.0.0
 */
$GLOBALS['wp_roles'] = new WP_Roles();

do_action( 'setup_theme' );

// Define the template related constants.
wp_templating_constants();

// Load the default text localization domain.
load_default_textdomain();

$locale      = get_locale();
$locale_file = WP_LANG_DIR . "/$locale.php";
if ( ( 0 === validate_file( $locale ) ) && is_readable( $locale_file ) ) {
	require $locale_file;
}
unset( $locale_file );

// Pull in locale data after loading text domain.
require_once ABSPATH . WPINC . '/locale.php';

/**
 * WordPress Locale object for loading locale domain date and various strings.
 * @global object $wp_locale
 * @since 2.1.0
 */
$GLOBALS['wp_locale'] = new WP_Locale();

// Load the functions for the active theme, for both parent and child theme if applicable.
// phpcs:disable WordPress.WP.DiscouragedConstants.STYLESHEETPATHUsageFound,WordPress.WP.DiscouragedConstants.TEMPLATEPATHUsageFound
global $pagenow;
if ( ! defined( 'WP_INSTALLING' ) || 'wp-activate.php' === $pagenow ) {
	if ( TEMPLATEPATH !== STYLESHEETPATH && file_exists( STYLESHEETPATH . '/functions.php' ) ) {
		include STYLESHEETPATH . '/functions.php';
	}
	if ( file_exists( TEMPLATEPATH . '/functions.php' ) ) {
		include TEMPLATEPATH . '/functions.php';
	}
}
// phpcs:enable WordPress.WP.DiscouragedConstants

do_action( 'after_setup_theme' );

// Set up current user.
$GLOBALS['wp']->init();

/**
 * Most of WP is loaded at this stage, and the user is authenticated. WP continues
 * to load on the init hook that follows (e.g. widgets), and many plugins instantiate
 * themselves on it for all sorts of reasons (e.g. they need a user, a taxonomy, etc.).
 *
 * If you wish to plug an action once WP is loaded, use the wp_loaded hook below.
 */
do_action( 'init' );

// Check site status
# if ( is_multisite() ) {  // WP-CLI
if ( is_multisite() && ! defined( 'WP_INSTALLING' ) ) {
	$file = ms_site_check();
	if ( true !== $file ) {
		require $file;
		die();
	}
	unset( $file );
}

/**
 * This hook is fired once WP, all plugins, and the theme are fully loaded and instantiated.
 *
 * AJAX requests should use wp-admin/admin-ajax.php. admin-ajax.php can handle requests for
 * users not logged in.
 *
 * @link https://codex.wordpress.org/AJAX_in_Plugins
 *
 * @since 3.0.0
 */
do_action( 'wp_loaded' );
<?php

use cli\Colors;
use Mustangostang\Spyc;
use WP_CLI\Configurator;
use WP_CLI\Dispatcher;
use WP_CLI\Dispatcher\CommandAddition;
use WP_CLI\Dispatcher\CommandFactory;
use WP_CLI\Dispatcher\CommandNamespace;
use WP_CLI\Dispatcher\CompositeCommand;
use WP_CLI\Dispatcher\RootCommand;
use WP_CLI\DocParser;
use WP_CLI\ExitException;
use WP_CLI\FileCache;
use WP_CLI\Loggers\Execution;
use WP_CLI\Process;
use WP_CLI\ProcessRun;
use WP_CLI\Runner;
use WP_CLI\SynopsisParser;
use WP_CLI\Utils;
use WP_CLI\WpHttpCacheManager;

/**
 * Various utilities for WP-CLI commands.
 */
class WP_CLI {

private static $logger;

private static $hooks = [];

private static $hooks_passed = [];

private static $capture_exit = false;

private static $deferred_additions = [];

/**
	 * Set the logger instance.
	 *
	 * @param object $logger Logger instance to set.
	 */
	public static function set_logger( $logger ) {
		self::$logger = $logger;
	}

/**
	 * Get the logger instance.
	 *
	 * @return object $logger Logger instance.
	 */
	public static function get_logger() {
		return self::$logger;
	}

/**
	 * Get the Configurator instance
	 *
	 * @return Configurator
	 */
	public static function get_configurator() {
		static $configurator;

if ( ! $configurator ) {
			$configurator = new Configurator( WP_CLI_ROOT . '/php/config-spec.php' );
		}

return $configurator;
	}

public static function get_root_command() {
		static $root;

if ( ! $root ) {
			$root = new RootCommand();
		}

return $root;
	}

public static function get_runner() {
		static $runner;

if ( ! $runner ) {
			$runner = new Runner();
		}

return $runner;
	}

/**
	 * @return FileCache
	 */
	public static function get_cache() {
		static $cache;

if ( ! $cache ) {
			$home     = Utils\get_home_dir();
			$dir      = getenv( 'WP_CLI_CACHE_DIR' ) ? : "$home/.wp-cli/cache";
			$ttl      = getenv( 'WP_CLI_CACHE_EXPIRY' ) ? : 15552000;
			$max_size = getenv( 'WP_CLI_CACHE_MAX_SIZE' ) ? : 314572800;
			// 6 months, 300mb
			$cache = new FileCache( $dir, $ttl, $max_size );

// Clean older files on shutdown with 1/50 probability.
			// phpcs:ignore WordPress.WP.AlternativeFunctions.rand_mt_rand -- no crypto and WP not loaded.
			if ( 0 === mt_rand( 0, 50 ) ) {
				register_shutdown_function(
					function () use ( $cache ) {
						$cache->clean();
					}
				);
			}
		}

return $cache;
	}

/**
	 * Set the context in which WP-CLI should be run
	 */
	public static function set_url( $url ) {
		self::debug( 'Set URL: ' . $url, 'bootstrap' );
		$url_parts = Utils\parse_url( $url );
		self::set_url_params( $url_parts );
	}

private static function set_url_params( $url_parts ) {
		$f = function( $key ) use ( $url_parts ) {
			return Utils\get_flag_value( $url_parts, $key, '' );
		};

if ( isset( $url_parts['host'] ) ) {
			if ( isset( $url_parts['scheme'] ) && 'https' === strtolower( $url_parts['scheme'] ) ) {
				$_SERVER['HTTPS'] = 'on';
			}

$_SERVER['HTTP_HOST'] = $url_parts['host'];
			if ( isset( $url_parts['port'] ) ) {
				$_SERVER['HTTP_HOST'] .= ':' . $url_parts['port'];
			}

$_SERVER['SERVER_NAME'] = $url_parts['host'];
		}

$_SERVER['REQUEST_URI']  = $f( 'path' ) . ( isset( $url_parts['query'] ) ? '?' . $url_parts['query'] : '' );
		$_SERVER['SERVER_PORT']  = Utils\get_flag_value( $url_parts, 'port', '80' );
		$_SERVER['QUERY_STRING'] = $f( 'query' );
	}

/**
	 * @return WpHttpCacheManager
	 */
	public static function get_http_cache_manager() {
		static $http_cacher;

if ( ! $http_cacher ) {
			$http_cacher = new WpHttpCacheManager( self::get_cache() );
		}

return $http_cacher;
	}

/**
	 * Colorize a string for output.
	 *
	 * Yes, you can change the color of command line text too. For instance,
	 * here's how `WP_CLI::success()` colorizes "Success: "
	 *
	 * ```
	 * WP_CLI::colorize( "%GSuccess:%n " )
	 * ```
	 *
	 * Uses `\cli\Colors::colorize()` to transform color tokens to display
	 * settings. Choose from the following tokens (and note 'reset'):
	 *
	 * * %y => ['color' => 'yellow'],
	 * * %g => ['color' => 'green'],
	 * * %b => ['color' => 'blue'],
	 * * %r => ['color' => 'red'],
	 * * %p => ['color' => 'magenta'],
	 * * %m => ['color' => 'magenta'],
	 * * %c => ['color' => 'cyan'],
	 * * %w => ['color' => 'grey'],
	 * * %k => ['color' => 'black'],
	 * * %n => ['color' => 'reset'],
	 * * %Y => ['color' => 'yellow', 'style' => 'bright'],
	 * * %G => ['color' => 'green', 'style' => 'bright'],
	 * * %B => ['color' => 'blue', 'style' => 'bright'],
	 * * %R => ['color' => 'red', 'style' => 'bright'],
	 * * %P => ['color' => 'magenta', 'style' => 'bright'],
	 * * %M => ['color' => 'magenta', 'style' => 'bright'],
	 * * %C => ['color' => 'cyan', 'style' => 'bright'],
	 * * %W => ['color' => 'grey', 'style' => 'bright'],
	 * * %K => ['color' => 'black', 'style' => 'bright'],
	 * * %N => ['color' => 'reset', 'style' => 'bright'],
	 * * %3 => ['background' => 'yellow'],
	 * * %2 => ['background' => 'green'],
	 * * %4 => ['background' => 'blue'],
	 * * %1 => ['background' => 'red'],
	 * * %5 => ['background' => 'magenta'],
	 * * %6 => ['background' => 'cyan'],
	 * * %7 => ['background' => 'grey'],
	 * * %0 => ['background' => 'black'],
	 * * %F => ['style' => 'blink'],
	 * * %U => ['style' => 'underline'],
	 * * %8 => ['style' => 'inverse'],
	 * * %9 => ['style' => 'bright'],
	 * * %_ => ['style' => 'bright']
	 *
	 * @access public
	 * @category Output
	 *
	 * @param string $string String to colorize for output, with color tokens.
	 * @return string Colorized string.
	 */
	public static function colorize( $string ) {
		return Colors::colorize( $string, self::get_runner()->in_color() );
	}

/**
	 * Schedule a callback to be executed at a certain point.
	 *
	 * Hooks conceptually are very similar to WordPress actions. WP-CLI hooks
	 * are typically called before WordPress is loaded.
	 *
	 * WP-CLI hooks include:
	 *
	 * * `before_add_command:<command>` - Before the command is added.
	 * * `after_add_command:<command>` - After the command was added.
	 * * `before_invoke:<command>` - Just before a command is invoked.
	 * * `after_invoke:<command>` - Just after a command is invoked.
	 * * `find_command_to_run_pre` - Just before WP-CLI finds the command to run.
	 * * `before_registering_contexts` (1) - Before the contexts are registered.
	 * * `before_wp_load` - Just before the WP load process begins.
	 * * `before_wp_config_load` - After wp-config.php has been located.
	 * * `after_wp_config_load` - After wp-config.php has been loaded into scope.
	 * * `after_wp_load` - Just after the WP load process has completed.
	 * * `before_run_command` (3) - Just before the command is executed.
	 *
	 * The parentheses behind the hook name denote the number of arguments
	 * being passed into the hook. For such hooks, the callback should return
	 * the first argument again, making them work like a WP filter.
	 *
	 * WP-CLI commands can create their own hooks with `WP_CLI::do_hook()`.
	 *
	 * If additional arguments are passed through the `WP_CLI::do_hook()` call,
	 * these will be passed on to the callback provided by `WP_CLI::add_hook()`.
	 *
	 * ```
	 * # `wp network meta` confirms command is executing in multisite context.
	 * WP_CLI::add_command( 'network meta', 'Network_Meta_Command', array(
	 *    'before_invoke' => function () {
	 *        if ( !is_multisite() ) {
	 *            WP_CLI::error( 'This is not a multisite installation.' );
	 *        }
	 *    }
	 * ) );
	 * ```
	 *
	 * @access public
	 * @category Registration
	 *
	 * @param string $when Identifier for the hook.
	 * @param mixed $callback Callback to execute when hook is called.
	 * @return null
	 */
	public static function add_hook( $when, $callback ) {
		if ( array_key_exists( $when, self::$hooks_passed ) ) {
			self::debug(
				sprintf(
					'Immediately invoking on passed hook "%s": %s',
					$when,
					Utils\describe_callable( $callback )
				),
				'hooks'
			);
			call_user_func_array( $callback, (array) self::$hooks_passed[ $when ] );
		}

self::$hooks[ $when ][] = $callback;
	}

/**
	 * Execute callbacks registered to a given hook.
	 *
	 * See `WP_CLI::add_hook()` for details on WP-CLI's internal hook system.
	 * Commands can provide and call their own hooks.
	 *
	 * @access public
	 * @category Registration
	 *
	 * @param string $when    Identifier for the hook.
	 * @param mixed  ...$args Optional. Arguments that will be passed onto the
	 *                        callback provided by `WP_CLI::add_hook()`.
	 * @return null|mixed Returns the first optional argument if optional
	 *                    arguments were passed, otherwise returns null.
	 */
	public static function do_hook( $when, ...$args ) {
		self::$hooks_passed[ $when ] = $args;

$has_args = count( $args ) > 0;

if ( ! isset( self::$hooks[ $when ] ) ) {
			if ( $has_args ) {
				return $args[0];
			}

return null;
		}

self::debug(
			sprintf(
				'Processing hook "%s" with %d callbacks',
				$when,
				count( self::$hooks[ $when ] )
			),
			'hooks'
		);

foreach ( self::$hooks[ $when ] as $callback ) {
			self::debug(
				sprintf(
					'On hook "%s": %s',
					$when,
					Utils\describe_callable( $callback )
				),
				'hooks'
			);

if ( $has_args ) {
				$return_value = $callback( ...$args );
				if ( isset( $return_value ) ) {
					$args[0] = $return_value;
				}
			} else {
				$callback();
			}
		}

if ( $has_args ) {
			return $args[0];
		}

return null;
	}

/**
	 * Add a callback to a WordPress action or filter.
	 *
	 * `add_action()` without needing access to `add_action()`. If WordPress is
	 * already loaded though, you should use `add_action()` (and `add_filter()`)
	 * instead.
	 *
	 * @access public
	 * @category Registration
	 *
	 * @param string $tag Named WordPress action or filter.
	 * @param mixed $function_to_add Callable to execute when the action or filter is evaluated.
	 * @param integer $priority Priority to add the callback as.
	 * @param integer $accepted_args Number of arguments to pass to callback.
	 * @return true
	 */
	public static function add_wp_hook( $tag, $function_to_add, $priority = 10, $accepted_args = 1 ) {
		global $wp_filter, $merged_filters;

if ( function_exists( 'add_filter' ) ) {
			add_filter( $tag, $function_to_add, $priority, $accepted_args );
		} else {
			$idx = self::wp_hook_build_unique_id( $tag, $function_to_add, $priority );

// phpcs:ignore WordPress.WP.GlobalVariablesOverride.Prohibited -- This is intentional & the purpose of this function.
			$wp_filter[ $tag ][ $priority ][ $idx ] = [
				'function'      => $function_to_add,
				'accepted_args' => $accepted_args,
			];
			unset( $merged_filters[ $tag ] );
		}

return true;
	}

/**
	 * Build Unique ID for storage and retrieval.
	 *
	 * Essentially _wp_filter_build_unique_id() without needing access to _wp_filter_build_unique_id()
	 */
	private static function wp_hook_build_unique_id( $tag, $function, $priority ) {
		global $wp_filter;
		static $filter_id_count = 0;

if ( is_string( $function ) ) {
			return $function;
		}

if ( is_object( $function ) ) {
			// Closures are currently implemented as objects
			$function = [ $function, '' ];
		} else {
			$function = (array) $function;
		}

if ( is_object( $function[0] ) ) {
			// Object Class Calling
			if ( function_exists( 'spl_object_hash' ) ) {
				return spl_object_hash( $function[0] ) . $function[1];
			}

$obj_idx = get_class( $function[0] ) . $function[1];
			if ( ! isset( $function[0]->wp_filter_id ) ) {
				if ( false === $priority ) {
					return false;
				}
				$obj_idx                  .= isset( $wp_filter[ $tag ][ $priority ] ) ? count( (array) $wp_filter[ $tag ][ $priority ] ) : $filter_id_count;
				$function[0]->wp_filter_id = $filter_id_count;
				++$filter_id_count;
			} else {
				$obj_idx .= $function[0]->wp_filter_id;
			}

return $obj_idx;
		}

if ( is_string( $function[0] ) ) {
			// Static Calling
			return $function[0] . '::' . $function[1];
		}
	}

/**
	 * Register a command to WP-CLI.
	 *
	 * WP-CLI supports using any callable class, function, or closure as a
	 * command. `WP_CLI::add_command()` is used for both internal and
	 * third-party command registration.
	 *
	 * Command arguments are parsed from PHPDoc by default, but also can be
	 * supplied as an optional third argument during registration.
	 *
	 * ```
	 * # Register a custom 'foo' command to output a supplied positional param.
	 * #
	 * # $ wp foo bar --append=qux
	 * # Success: bar qux
	 *
	 * /**
	 *  * My awesome closure command
	 *  *
	 *  * <message>
	 *  * : An awesome message to display
	 *  *
	 *  * --append=<message>
	 *  * : An awesome message to append to the original message.
	 *  *
	 *  * @when before_wp_load
	 *  *\/
	 * $foo = function( $args, $assoc_args ) {
	 *     WP_CLI::success( $args[0] . ' ' . $assoc_args['append'] );
	 * };
	 * WP_CLI::add_command( 'foo', $foo );
	 * ```
	 *
	 * @access public
	 * @category Registration
	 *
	 * @param string   $name Name for the command (e.g. "post list" or "site empty").
	 * @param callable $callable Command implementation as a class, function or closure.
	 * @param array    $args {
	 *    Optional. An associative array with additional registration parameters.
	 *
	 *    @type callable $before_invoke Callback to execute before invoking the command.
	 *    @type callable $after_invoke  Callback to execute after invoking the command.
	 *    @type string   $shortdesc     Short description (80 char or less) for the command.
	 *    @type string   $longdesc      Description of arbitrary length for examples, etc.
	 *    @type string   $synopsis      The synopsis for the command (string or array).
	 *    @type string   $when          Execute callback on a named WP-CLI hook (e.g. before_wp_load).
	 *    @type bool     $is_deferred   Whether the command addition had already been deferred.
	 * }
	 * @return bool True on success, false if deferred, hard error if registration failed.
	 */
	public static function add_command( $name, $callable, $args = [] ) {
		// Bail immediately if the WP-CLI executable has not been run.
		if ( ! defined( 'WP_CLI' ) ) {
			return false;
		}

$valid = false;
		if ( is_callable( $callable ) ) {
			$valid = true;
		} elseif ( is_string( $callable ) && class_exists( (string) $callable ) ) {
			$valid = true;
		} elseif ( is_object( $callable ) ) {
			$valid = true;
		} elseif ( Utils\is_valid_class_and_method_pair( $callable ) ) {
			$valid = true;
		}
		if ( ! $valid ) {
			if ( is_array( $callable ) ) {
				$callable[0] = is_object( $callable[0] ) ? get_class( $callable[0] ) : $callable[0];
				$callable    = [ $callable[0], $callable[1] ];
			}
			self::error( sprintf( 'Callable %s does not exist, and cannot be registered as `wp %s`.', json_encode( $callable ), $name ) );
		}

$addition = new CommandAddition();
		self::do_hook( "before_add_command:{$name}", $addition );

if ( $addition->was_aborted() ) {
			self::warning( "Aborting the addition of the command '{$name}' with reason: {$addition->get_reason()}." );
			return false;
		}

foreach ( [ 'before_invoke', 'after_invoke' ] as $when ) {
			if ( isset( $args[ $when ] ) ) {
				self::add_hook( "{$when}:{$name}", $args[ $when ] );
			}
		}

$path = preg_split( '/\s+/', $name );

$leaf_name = array_pop( $path );

$command = self::get_root_command();

while ( ! empty( $path ) ) {
			$subcommand_name = $path[0];
			$parent          = implode( ' ', $path );
			$subcommand      = $command->find_subcommand( $path );

// Parent not found. Defer addition or create an empty container as
			// needed.
			if ( ! $subcommand ) {
				if ( isset( $args['is_deferred'] ) && $args['is_deferred'] ) {
					$subcommand = new CompositeCommand(
						$command,
						$subcommand_name,
						new DocParser( '' )
					);

self::debug(
						"Adding empty container for deferred command: {$name}",
						'commands'
					);

$command->add_subcommand( $subcommand_name, $subcommand );
				} else {
					self::debug( "Deferring command: {$name}", 'commands' );

self::defer_command_addition(
						$name,
						$parent,
						$callable,
						$args
					);

return false;
				}
			}

$command = $subcommand;
		}

$leaf_command = CommandFactory::create( $leaf_name, $callable, $command );

// Only add a command namespace if the command itself does not exist yet.
		if ( $leaf_command instanceof CommandNamespace
			&& array_key_exists( $leaf_name, $command->get_subcommands() ) ) {
			return false;
		}

// Reattach commands attached to namespace to real command.
		$subcommand_name  = (array) $leaf_name;
		$existing_command = $command->find_subcommand( $subcommand_name );
		if ( $existing_command instanceof CompositeCommand && $existing_command->can_have_subcommands() ) {
			if ( $leaf_command instanceof CommandNamespace || ! $leaf_command->can_have_subcommands() ) {
				$command_to_keep = $existing_command;
			} else {
				$command_to_keep = $leaf_command;
			}

self::merge_sub_commands( $command_to_keep, $existing_command, $leaf_command );
		}

/** @var Dispatcher\Subcommand|Dispatcher\CompositeCommand|Dispatcher\CommandNamespace $leaf_command */

if ( ! $command->can_have_subcommands() ) {
			throw new Exception(
				sprintf(
					"'%s' can't have subcommands.",
					implode( ' ', get_path( $command ) )
				)
			);
		}

if ( isset( $args['shortdesc'] ) ) {
			$leaf_command->set_shortdesc( $args['shortdesc'] );
		}

if ( isset( $args['longdesc'] ) ) {
			$leaf_command->set_longdesc( $args['longdesc'] );
		}

if ( isset( $args['synopsis'] ) ) {
			if ( is_string( $args['synopsis'] ) ) {
				$leaf_command->set_synopsis( $args['synopsis'] );
			} elseif ( is_array( $args['synopsis'] ) ) {
				$synopsis = SynopsisParser::render( $args['synopsis'] );
				$leaf_command->set_synopsis( $synopsis );
				$long_desc = '';
				$bits      = explode( ' ', $synopsis );
				foreach ( $args['synopsis'] as $key => $arg ) {
					$long_desc .= $bits[ $key ] . "\n";
					if ( ! empty( $arg['description'] ) ) {
						$long_desc .= ': ' . $arg['description'] . "\n";
					}
					$yamlify = [];
					foreach ( [ 'default', 'options' ] as $key ) {
						if ( isset( $arg[ $key ] ) ) {
							$yamlify[ $key ] = $arg[ $key ];
						}
					}
					if ( ! empty( $yamlify ) ) {
						$long_desc .= Spyc::YAMLDump( $yamlify );
						$long_desc .= '---' . "\n";
					}
					$long_desc .= "\n";
				}
				if ( ! empty( $long_desc ) ) {
					$long_desc = rtrim( $long_desc, "\r\n" );
					$long_desc = '## OPTIONS' . "\n\n" . $long_desc;
					if ( ! empty( $args['longdesc'] ) ) {
						$long_desc .= "\n\n" . ltrim( $args['longdesc'], "\r\n" );
					}
					$leaf_command->set_longdesc( $long_desc );
				}
			}
		}

if ( isset( $args['when'] ) ) {
			self::get_runner()->register_early_invoke( $args['when'], $leaf_command );
		}

if ( ! empty( $parent ) ) {
			$sub_command = trim( str_replace( $parent, '', $name ) );
			self::debug( "Adding command: {$sub_command} in {$parent} Namespace", 'commands' );
		} else {
			self::debug( "Adding command: {$name}", 'commands' );
		}

$command->add_subcommand( $leaf_name, $leaf_command );

self::do_hook( "after_add_command:{$name}" );
		return true;
	}

/**
	 * Merge the sub-commands of two commands into a single command to keep.
	 *
	 * @param CompositeCommand $command_to_keep Command to merge the sub commands into. This is typically one of the
	 *                                          two others.
	 * @param CompositeCommand $old_command     Command that was already registered.
	 * @param CompositeCommand $new_command     New command that is being added.
	 */
	private static function merge_sub_commands(
		CompositeCommand $command_to_keep,
		CompositeCommand $old_command,
		CompositeCommand $new_command
	) {
		foreach ( $old_command->get_subcommands() as $subname => $subcommand ) {
			$command_to_keep->add_subcommand( $subname, $subcommand, false );
		}

foreach ( $new_command->get_subcommands() as $subname => $subcommand ) {
			$command_to_keep->add_subcommand( $subname, $subcommand, true );
		}
	}

/**
	 * Defer command addition for a sub-command if the parent command is not yet
	 * registered.
	 *
	 * @param string $name     Name for the sub-command.
	 * @param string $parent   Name for the parent command.
	 * @param string $callable Command implementation as a class, function or closure.
	 * @param array  $args     Optional. See `WP_CLI::add_command()` for details.
	 */
	private static function defer_command_addition( $name, $parent, $callable, $args = [] ) {
		$args['is_deferred']               = true;
		self::$deferred_additions[ $name ] = [
			'parent'   => $parent,
			'callable' => $callable,
			'args'     => $args,
		];
		self::add_hook(
			"after_add_command:$parent",
			function () use ( $name ) {
				$deferred_additions = WP_CLI::get_deferred_additions();

if ( ! array_key_exists( $name, $deferred_additions ) ) {
					return;
				}

$callable = $deferred_additions[ $name ]['callable'];
				$args     = $deferred_additions[ $name ]['args'];
				WP_CLI::remove_deferred_addition( $name );

WP_CLI::add_command( $name, $callable, $args );
			}
		);
	}

/**
	 * Get the list of outstanding deferred command additions.
	 *
	 * @return array Array of outstanding command additions.
	 */
	public static function get_deferred_additions() {
		return self::$deferred_additions;
	}

/**
	 * Remove a command addition from the list of outstanding deferred additions.
	 */
	public static function remove_deferred_addition( $name ) {
		if ( ! array_key_exists( $name, self::$deferred_additions ) ) {
			self::warning( "Trying to remove a non-existent command addition '{$name}'." );
		}

unset( self::$deferred_additions[ $name ] );
	}

/**
	 * Display informational message without prefix, and ignore `--quiet`.
	 *
	 * Message is written to STDOUT. `WP_CLI::log()` is typically recommended;
	 * `WP_CLI::line()` is included for historical compat.
	 *
	 * @access public
	 * @category Output
	 *
	 * @param string $message Message to display to the end user.
	 * @return null
	 */
	public static function line( $message = '' ) {
		echo $message . "\n";
	}

/**
	 * Display informational message without prefix.
	 *
	 * Message is written to STDOUT, or discarded when `--quiet` flag is supplied.
	 *
	 * ```
	 * # `wp cli update` lets user know of each step in the update process.
	 * WP_CLI::log( sprintf( 'Downloading from %s...', $download_url ) );
	 * ```
	 *
	 * @access public
	 * @category Output
	 *
	 * @param string $message Message to write to STDOUT.
	 */
	public static function log( $message ) {
		if ( null === self::$logger ) {
			return;
		}

self::$logger->info( $message );
	}

/**
	 * Display success message prefixed with "Success: ".
	 *
	 * Success message is written to STDOUT.
	 *
	 * Typically recommended to inform user of successful script conclusion.
	 *
	 * ```
	 * # wp rewrite flush expects 'rewrite_rules' option to be set after flush.
	 * flush_rewrite_rules( \WP_CLI\Utils\get_flag_value( $assoc_args, 'hard' ) );
	 * if ( ! get_option( 'rewrite_rules' ) ) {
	 *     WP_CLI::warning( "Rewrite rules are empty." );
	 * } else {
	 *     WP_CLI::success( 'Rewrite rules flushed.' );
	 * }
	 * ```
	 *
	 * @access public
	 * @category Output
	 *
	 * @param string $message Message to write to STDOUT.
	 * @return null
	 */
	public static function success( $message ) {
		if ( null === self::$logger ) {
			return;
		}

self::$logger->success( $message );
	}

/**
	 * Display debug message prefixed with "Debug: " when `--debug` is used.
	 *
	 * Debug message is written to STDERR, and includes script execution time.
	 *
	 * Helpful for optionally showing greater detail when needed. Used throughout
	 * WP-CLI bootstrap process for easier debugging and profiling.
	 *
	 * ```
	 * # Called in `WP_CLI\Runner::set_wp_root()`.
	 * private static function set_wp_root( $path ) {
	 *     define( 'ABSPATH', Utils\trailingslashit( $path ) );
	 *     WP_CLI::debug( 'ABSPATH defined: ' . ABSPATH );
	 *     $_SERVER['DOCUMENT_ROOT'] = realpath( $path );
	 * }
	 *
	 * # Debug details only appear when `--debug` is used.
	 * # $ wp --debug
	 * # [...]
	 * # Debug: ABSPATH defined: /srv/www/wordpress-develop.dev/src/ (0.225s)
	 * ```
	 *
	 * @access public
	 * @category Output
	 *
	 * @param string|WP_Error|Exception|Throwable $message Message to write to STDERR.
	 * @param string|bool $group Organize debug message to a specific group.
	 * Use `false` to not group the message.
	 * @return null
	 */
	public static function debug( $message, $group = false ) {
		static $storage = [];

if ( ! self::$logger ) {
			$storage[] = [ $message, $group ];
			return;
		}

if ( ! empty( $storage ) && self::$logger ) {
			foreach ( $storage as $entry ) {
				list( $stored_message, $stored_group ) = $entry;
				self::$logger->debug( self::error_to_string( $stored_message ), $stored_group );
			}
			$storage = [];
		}

self::$logger->debug( self::error_to_string( $message ), $group );
	}

/**
	 * Display warning message prefixed with "Warning: ".
	 *
	 * Warning message is written to STDERR.
	 *
	 * Use instead of `WP_CLI::debug()` when script execution should be permitted
	 * to continue.
	 *
	 * ```
	 * # `wp plugin activate` skips activation when plugin is network active.
	 * $status = $this->get_status( $plugin->file );
	 * // Network-active is the highest level of activation status
	 * if ( 'active-network' === $status ) {
	 *   WP_CLI::warning( "Plugin '{$plugin->name}' is already network active." );
	 *   continue;
	 * }
	 * ```
	 *
	 * @access public
	 * @category Output
	 *
	 * @param string|WP_Error|Exception|Throwable $message Message to write to STDERR.
	 * @return null
	 */
	public static function warning( $message ) {
		if ( null === self::$logger ) {
			return;
		}

self::$logger->warning( self::error_to_string( $message ) );
	}

/**
	 * Display error message prefixed with "Error: " and exit script.
	 *
	 * Error message is written to STDERR. Defaults to halting script execution
	 * with return code 1.
	 *
	 * Use `WP_CLI::warning()` instead when script execution should be permitted
	 * to continue.
	 *
	 * ```
	 * # `wp cache flush` considers flush failure to be a fatal error.
	 * if ( false === wp_cache_flush() ) {
	 *     WP_CLI::error( 'The object cache could not be flushed.' );
	 * }
	 * ```
	 *
	 * @access public
	 * @category Output
	 *
	 * @param string|WP_Error|Exception|Throwable $message Message to write to STDERR.
	 * @param boolean|integer            $exit    True defaults to exit(1).
	 * @return null
	 */
	public static function error( $message, $exit = true ) {
		if ( null !== self::$logger && ! isset( self::get_runner()->assoc_args['completions'] ) ) {
			self::$logger->error( self::error_to_string( $message ) );
		}

$return_code = false;
		if ( true === $exit ) {
			$return_code = 1;
		} elseif ( is_int( $exit ) && $exit >= 1 ) {
			$return_code = $exit;
		}

if ( $return_code ) {
			if ( self::$capture_exit ) {
				throw new ExitException( null, $return_code );
			}
			exit( $return_code );
		}
	}

/**
	 * Halt script execution with a specific return code.
	 *
	 * Permits script execution to be overloaded by `WP_CLI::runcommand()`
	 *
	 * @access public
	 * @category Output
	 *
	 * @param integer $return_code
	 */
	public static function halt( $return_code ) {
		if ( self::$capture_exit ) {
			throw new ExitException( null, $return_code );
		}
		exit( $return_code );
	}

/**
	 * Display a multi-line error message in a red box. Doesn't exit script.
	 *
	 * Error message is written to STDERR.
	 *
	 * @access public
	 * @category Output
	 *
	 * @param array $message_lines Multi-line error message to be displayed.
	 */
	public static function error_multi_line( $message_lines ) {
		if ( null === self::$logger ) {
			return;
		}

if ( ! isset( self::get_runner()->assoc_args['completions'] ) && is_array( $message_lines ) ) {
			self::$logger->error_multi_line( array_map( [ __CLASS__, 'error_to_string' ], $message_lines ) );
		}
	}

/**
	 * Ask for confirmation before running a destructive operation.
	 *
	 * If 'y' is provided to the question, the script execution continues. If
	 * 'n' or any other response is provided to the question, script exits.
	 *
	 * ```
	 * # `wp db drop` asks for confirmation before dropping the database.
	 *
	 * WP_CLI::confirm( "Are you sure you want to drop the database?", $assoc_args );
	 * ```
	 *
	 * @access public
	 * @category Input
	 *
	 * @param string $question Question to display before the prompt.
	 * @param array $assoc_args Skips prompt if 'yes' is provided.
	 */
	public static function confirm( $question, $assoc_args = [] ) {
		if ( ! Utils\get_flag_value( $assoc_args, 'yes' ) ) {
			fwrite( STDOUT, $question . ' [y/n] ' );

$answer = strtolower( trim( fgets( STDIN ) ) );

if ( 'y' !== $answer ) {
				exit;
			}
		}
	}

/**
	 * Read value from a positional argument or from STDIN.
	 *
	 * @param array $args The list of positional arguments.
	 * @param int $index At which position to check for the value.
	 *
	 * @return string
	 */
	public static function get_value_from_arg_or_stdin( $args, $index ) {
		if ( isset( $args[ $index ] ) ) {
			$raw_value = $args[ $index ];
		} else {
			// We don't use file_get_contents() here because it doesn't handle
			// Ctrl-D properly, when typing in the value interactively.
			$raw_value = '';
			while ( false !== ( $line = fgets( STDIN ) ) ) {
				$raw_value .= $line;
			}
		}

return $raw_value;
	}

/**
	 * Read a value, from various formats.
	 *
	 * @access public
	 * @category Input
	 *
	 * @param mixed $raw_value
	 * @param array $assoc_args
	 */
	public static function read_value( $raw_value, $assoc_args = [] ) {
		if ( Utils\get_flag_value( $assoc_args, 'format' ) === 'json' ) {
			$value = json_decode( $raw_value, true );
			if ( null === $value ) {
				self::error( sprintf( 'Invalid JSON: %s', $raw_value ) );
			}
		} else {
			$value = $raw_value;
		}

return $value;
	}

/**
	 * Display a value, in various formats
	 *
	 * @param mixed $value Value to display.
	 * @param array $assoc_args Arguments passed to the command, determining format.
	 */
	public static function print_value( $value, $assoc_args = [] ) {
		if ( Utils\get_flag_value( $assoc_args, 'format' ) === 'json' ) {
			$value = json_encode( $value );
		} elseif ( Utils\get_flag_value( $assoc_args, 'format' ) === 'yaml' ) {
			$value = Spyc::YAMLDump( $value, 2, 0 );
		} elseif ( is_array( $value ) || is_object( $value ) ) {
			$value = var_export( $value, true );
		}

echo $value . "\n";
	}

/**
	 * Convert a WP_Error or Exception into a string
	 *
	 * @param string|WP_Error|Exception|Throwable $errors
	 * @throws InvalidArgumentException
	 *
	 * @return string
	 */
	public static function error_to_string( $errors ) {
		if ( is_string( $errors ) ) {
			return $errors;
		}

// Only json_encode() the data when it needs it
		$render_data = function( $data ) {
			if ( is_array( $data ) || is_object( $data ) ) {
				return json_encode( $data );
			}

return '"' . $data . '"';
		};

if ( $errors instanceof WP_Error ) {
			foreach ( $errors->get_error_messages() as $message ) {
				if ( $errors->get_error_data() ) {
					return $message . ' ' . $render_data( $errors->get_error_data() );
				}

return $message;
			}
		}

// PHP 7+: internal and user exceptions must implement Throwable interface.
		// PHP 5: internal and user exceptions must extend Exception class.
		if ( interface_exists( 'Throwable' ) && ( $errors instanceof Throwable ) || ( $errors instanceof Exception ) ) {
			return get_class( $errors ) . ': ' . $errors->getMessage();
		}

throw new InvalidArgumentException(
			sprintf(
				"Unsupported argument type passed to WP_CLI::error_to_string(): '%s'",
				gettype( $errors )
			)
		);
	}

/**
	 * Launch an arbitrary external process that takes over I/O.
	 *
	 * ```
	 * # `wp core download` falls back to the `tar` binary when PharData isn't available
	 * if ( ! class_exists( 'PharData' ) ) {
	 *     $cmd = "tar xz --strip-components=1 --directory=%s -f $tarball";
	 *     WP_CLI::launch( Utils\esc_cmd( $cmd, $dest ) );
	 *     return;
	 * }
	 * ```
	 *
	 * @access public
	 * @category Execution
	 *
	 * @param string $command External process to launch.
	 * @param boolean $exit_on_error Whether to exit if the command returns an elevated return code.
	 * @param boolean $return_detailed Whether to return an exit status (default) or detailed execution results.
	 * @return int|ProcessRun The command exit status, or a ProcessRun object for full details.
	 */
	public static function launch( $command, $exit_on_error = true, $return_detailed = false ) {
		Utils\check_proc_available( 'launch' );

$proc    = Process::create( $command );
		$results = $proc->run();

if ( -1 === $results->return_code ) {
			self::warning( "Spawned process returned exit code {$results->return_code}, which could be caused by a custom compiled version of PHP that uses the --enable-sigchild option." );
		}

if ( $results->return_code && $exit_on_error ) {
			exit( $results->return_code );
		}

if ( $return_detailed ) {
			return $results;
		}

return $results->return_code;
	}

/**
	 * Run a WP-CLI command in a new process reusing the current runtime arguments.
	 *
	 * Use `WP_CLI::runcommand()` instead, which is easier to use and works better.
	 *
	 * Note: While this command does persist a limited set of runtime arguments,
	 * it *does not* persist environment variables. Practically speaking, WP-CLI
	 * packages won't be loaded when using WP_CLI::launch_self() because the
	 * launched process doesn't have access to the current process $HOME.
	 *
	 * @access public
	 * @category Execution
	 *
	 * @param string $command WP-CLI command to call.
	 * @param array $args Positional arguments to include when calling the command.
	 * @param array $assoc_args Associative arguments to include when calling the command.
	 * @param bool $exit_on_error Whether to exit if the command returns an elevated return code.
	 * @param bool $return_detailed Whether to return an exit status (default) or detailed execution results.
	 * @param array $runtime_args Override one or more global args (path,url,user,allow-root)
	 * @return int|ProcessRun The command exit status, or a ProcessRun instance
	 */
	public static function launch_self( $command, $args = [], $assoc_args = [], $exit_on_error = true, $return_detailed = false, $runtime_args = [] ) {
		$reused_runtime_args = [
			'path',
			'url',
			'user',
			'allow-root',
		];

foreach ( $reused_runtime_args as $key ) {
			if ( isset( $runtime_args[ $key ] ) ) {
				$assoc_args[ $key ] = $runtime_args[ $key ];
				continue;
			}

$value = self::get_runner()->config[ $key ];
			if ( $value ) {
				$assoc_args[ $key ] = $value;
			}
		}

$php_bin = escapeshellarg( Utils\get_php_binary() );

$script_path = $GLOBALS['argv'][0];

$args       = implode( ' ', array_map( 'escapeshellarg', $args ) );
		$assoc_args = Utils\assoc_args_to_str( $assoc_args );

$full_command = "WP_CLI_CONFIG_PATH={$config_path} {$php_bin} {$script_path} {$command} {$args} {$assoc_args}";

return self::launch( $full_command, $exit_on_error, $return_detailed );
	}

/**
	 * Get the path to the PHP binary used when executing WP-CLI.
	 *
	 * Environment values permit specific binaries to be indicated.
	 *
	 * Note: moved to Utils, left for BC.
	 *
	 * @access public
	 * @category System
	 *
	 * @return string
	 */
	public static function get_php_binary() {
		return Utils\get_php_binary();
	}

/**
	 * Confirm that a global configuration parameter does exist.
	 *
	 * @access public
	 * @category Input
	 *
	 * @param string $key Config parameter key to check.
	 *
	 * @return bool
	 */
	public static function has_config( $key ) {
		return array_key_exists( $key, self::get_runner()->config );
	}

/**
	 * Get values of global configuration parameters.
	 *
	 * Provides access to `--path=<path>`, `--url=<url>`, and other values of
	 * the [global configuration parameters](https://wp-cli.org/config/).
	 *
	 * ```
	 * WP_CLI::log( 'The --url=<url> value is: ' . WP_CLI::get_config( 'url' ) );
	 * ```
	 *
	 * @access public
	 * @category Input
	 *
	 * @param string $key Get value for a specific global configuration parameter.
	 * @return mixed
	 */
	public static function get_config( $key = null ) {
		if ( null === $key ) {
			return self::get_runner()->config;
		}

if ( ! isset( self::get_runner()->config[ $key ] ) ) {
			self::warning( "Unknown config option '$key'." );
			return null;
		}

return self::get_runner()->config[ $key ];
	}

/**
	 * Run a WP-CLI command.
	 *
	 * Launches a new child process to run a specified WP-CLI command.
	 * Optionally:
	 *
	 * * Run the command in an existing process.
	 * * Prevent halting script execution on error.
	 * * Capture and return STDOUT, or full details about command execution.
	 * * Parse JSON output if the command rendered it.
	 *
	 * ```
	 * $options = array(
	 *   'return'     => true,   // Return 'STDOUT'; use 'all' for full object.
	 *   'parse'      => 'json', // Parse captured STDOUT to JSON array.
	 *   'launch'     => false,  // Reuse the current process.
	 *   'exit_error' => true,   // Halt script execution on error.
	 * );
	 * $plugins = WP_CLI::runcommand( 'plugin list --format=json', $options );
	 * ```
	 *
	 * @access public
	 * @category Execution
	 *
	 * @param string $command WP-CLI command to run, including arguments.
	 * @param array  $options Configuration options for command execution.
	 * @return mixed
	 */
	public static function runcommand( $command, $options = [] ) {
		$defaults   = [
			'launch'     => true, // Launch a new process, or reuse the existing.
			'exit_error' => true, // Exit on error by default.
			'return'     => false, // Capture and return output, or render in realtime.
			'parse'      => false, // Parse returned output as a particular format.
		];
		$options    = array_merge( $defaults, $options );
		$launch     = $options['launch'];
		$exit_error = $options['exit_error'];
		$return     = $options['return'];
		$parse      = $options['parse'];
		$retval     = null;
		if ( $launch ) {
			Utils\check_proc_available( 'launch option' );

$descriptors = [
				0 => STDIN,
				1 => STDOUT,
				2 => STDERR,
			];

if ( $return ) {
				$descriptors = [
					0 => STDIN,
					1 => [ 'pipe', 'w' ],
					2 => [ 'pipe', 'w' ],
				];
			}

$php_bin     = escapeshellarg( Utils\get_php_binary() );
			$script_path = $GLOBALS['argv'][0];

// Persist runtime arguments unless they've been specified otherwise.
			$configurator = self::get_configurator();
			$argv         = array_slice( $GLOBALS['argv'], 1 );

list( $ignore1, $ignore2, $runtime_config ) = $configurator->parse_args( $argv );
			foreach ( $runtime_config as $k => $v ) {
				if ( preg_match( "|^--{$k}=?$|", $command ) ) {
					unset( $runtime_config[ $k ] );
				}
			}
			$runtime_config = Utils\assoc_args_to_str( $runtime_config );

$runcommand = "{$php_bin} {$script_path} {$runtime_config} {$command}";

$pipes = [];
			$proc  = Utils\proc_open_compat( $runcommand, $descriptors, $pipes, getcwd() );

if ( $return ) {
				$stdout = stream_get_contents( $pipes[1] );
				fclose( $pipes[1] );
				$stderr = stream_get_contents( $pipes[2] );
				fclose( $pipes[2] );
			}
			$return_code = proc_close( $proc );
			if ( -1 === $return_code ) {
				self::warning( 'Spawned process returned exit code -1, which could be caused by a custom compiled version of PHP that uses the --enable-sigchild option.' );
			} elseif ( $return_code && $exit_error ) {
				exit( $return_code );
			}
			if ( true === $return || 'stdout' === $return ) {
				$retval = trim( $stdout );
			} elseif ( 'stderr' === $return ) {
				$retval = trim( $stderr );
			} elseif ( 'return_code' === $return ) {
				$retval = $return_code;
			} elseif ( 'all' === $return ) {
				$retval = (object) [
					'stdout'      => trim( $stdout ),
					'stderr'      => trim( $stderr ),
					'return_code' => $return_code,
				];
			}
		} else {
			$configurator                               = self::get_configurator();
			$argv                                       = Utils\parse_str_to_argv( $command );
			list( $args, $assoc_args, $runtime_config ) = $configurator->parse_args( $argv );
			if ( $return ) {
				$existing_logger = self::$logger;
				self::$logger    = new Execution();
				self::$logger->ob_start();
			}
			if ( ! $exit_error ) {
				self::$capture_exit = true;
			}
			try {
				self::get_runner()->run_command(
					$args,
					$assoc_args,
					[
						'back_compat_conversions' => true,
					]
				);
				$return_code = 0;
			} catch ( ExitException $e ) {
				$return_code = $e->getCode();
			}
			if ( $return ) {
				$execution_logger = self::$logger;
				$execution_logger->ob_end();
				self::$logger = $existing_logger;
				$stdout       = $execution_logger->stdout;
				$stderr       = $execution_logger->stderr;
				if ( true === $return || 'stdout' === $return ) {
					$retval = trim( $stdout );
				} elseif ( 'stderr' === $return ) {
					$retval = trim( $stderr );
				} elseif ( 'return_code' === $return ) {
					$retval = $return_code;
				} elseif ( 'all' === $return ) {
					$retval = (object) [
						'stdout'      => trim( $stdout ),
						'stderr'      => trim( $stderr ),
						'return_code' => $return_code,
					];
				}
			}
			if ( ! $exit_error ) {
				self::$capture_exit = false;
			}
		}
		if ( ( true === $return || 'stdout' === $return )
			&& 'json' === $parse ) {
			$retval = json_decode( $retval, true );
		}
		return $retval;
	}

/**
	 * Run a given command within the current process using the same global
	 * parameters.
	 *
	 * Use `WP_CLI::runcommand()` instead, which is easier to use and works better.
	 *
	 * To run a command using a new process with the same global parameters,
	 * use WP_CLI::launch_self(). To run a command using a new process with
	 * different global parameters, use WP_CLI::launch().
	 *
	 * ```
	 * ob_start();
	 * WP_CLI::run_command( array( 'cli', 'cmd-dump' ) );
	 * $ret = ob_get_clean();
	 * ```
	 *
	 * @access public
	 * @category Execution
	 *
	 * @param array $args Positional arguments including command name.
	 * @param array $assoc_args
	 */
	public static function run_command( $args, $assoc_args = [] ) {
		self::get_runner()->run_command( $args, $assoc_args );
	}

// DEPRECATED STUFF

public static function add_man_dir() {
		trigger_error( 'WP_CLI::add_man_dir() is deprecated. Add docs inline.', E_USER_WARNING );
	}

// back-compat
	public static function out( $str ) {
		fwrite( STDOUT, $str );
	}

// back-compat
	// phpcs:ignore WordPress.NamingConventions.ValidFunctionName.MethodNameInvalid -- Deprecated method.
	public static function addCommand( $name, $class ) {
		trigger_error(
			sprintf(
				'wp %s: %s is deprecated. use WP_CLI::add_command() instead.',
				$name,
				__FUNCTION__
			),
			E_USER_WARNING
		);
		self::add_command( $name, $class );
	}
}
<?php

// Utilities that do NOT depend on WordPress code.

namespace WP_CLI\Utils;

use ArrayIterator;
use cli;
use cli\progress\Bar;
use cli\Shell;
use Closure;
use Composer\Semver\Comparator;
use Composer\Semver\Semver;
use Exception;
use Mustache_Engine;
use ReflectionFunction;
use Requests;
use Requests_Exception;
use RuntimeException;
use WP_CLI;
use WP_CLI\ExitException;
use WP_CLI\Formatter;
use WP_CLI\Inflector;
use WP_CLI\Iterators\Transform;
use WP_CLI\NoOp;
use WP_CLI\Process;

const PHAR_STREAM_PREFIX = 'phar://';

/**
 * Regular expression pattern to match __FILE__ and __DIR__ constants.
 *
 * We try to be smart and only replace the constants when they are not within quotes.
 * Regular expressions being stateless, this is probably not 100% correct for edge cases.
 *
 * @see https://regex101.com/r/9hXp5d/11
 * @see https://stackoverflow.com/a/171499/933065
 *
 * @var string
 */
const FILE_DIR_PATTERN = '%(?>#.*?$)|(?>//.*?$)|(?>/\*.*?\*/)|(?>\'(?:(?=(\\\\?))\1.)*?\')|(?>"(?:(?=(\\\\?))\2.)*?")|(?<file>\b__FILE__\b)|(?<dir>\b__DIR__\b)%ms';

function inside_phar() {
	return 0 === strpos( WP_CLI_ROOT, PHAR_STREAM_PREFIX );
}

// Files that need to be read by external programs have to be extracted from the Phar archive.
function extract_from_phar( $path ) {
	if ( ! inside_phar() ) {
		return $path;
	}

$fname = basename( $path );

$tmp_path = get_temp_dir() . uniqid( 'wp-cli-extract-from-phar-', true ) . "-$fname";

copy( $path, $tmp_path );

register_shutdown_function(
		function() use ( $tmp_path ) {
			if ( file_exists( $tmp_path ) ) {
				unlink( $tmp_path );
			}
		}
	);

return $tmp_path;
}

$has_autoload = false;

foreach ( get_vendor_paths() as $vendor_path ) {
		if ( file_exists( $vendor_path . '/autoload.php' ) ) {
			require $vendor_path . '/autoload.php';
			$has_autoload = true;
			break;
		}
	}

if ( ! $has_autoload ) {
		fwrite( STDERR, "Internal error: Can't find Composer autoloader.\nTry running: composer install\n" );
		exit( 3 );
	}
}

// Using require() directly inside a class grants access to private methods to the loaded code.
function load_file( $path ) {
	require_once $path;
}

function load_command( $name ) {
	$path = WP_CLI_ROOT . "/php/commands/$name.php";

if ( is_readable( $path ) ) {
		include_once $path;
	}
}

/**
 * Like array_map(), except it returns a new iterator, instead of a modified array.
 *
 * Example:
 *
 *     $arr = array('Football', 'Socker');
 *
 *     $it = iterator_map($arr, 'strtolower', function($val) {
 *       return str_replace('foo', 'bar', $val);
 *     });
 *
 *     foreach ( $it as $val ) {
 *       var_dump($val);
 *     }
 *
 * @param array|object $it Either a plain array or another iterator.
 * @param callback     $fn The function to apply to an element.
 * @return object An iterator that applies the given callback(s).
 */
function iterator_map( $it, $fn ) {
	if ( is_array( $it ) ) {
		$it = new ArrayIterator( $it );
	}

if ( ! method_exists( $it, 'add_transform' ) ) {
		$it = new Transform( $it );
	}

foreach ( array_slice( func_get_args(), 1 ) as $fn ) {
		$it->add_transform( $fn );
	}

return $it;
}

/**
 * Search for file by walking up the directory tree until the first file is found or until $stop_check($dir) returns true.
 *
 * @param string|array $files      The files (or file) to search for.
 * @param string|null  $dir        The directory to start searching from; defaults to CWD.
 * @param callable     $stop_check Function which is passed the current dir each time a directory level is traversed.
 * @return null|string Null if the file was not found.
 */
function find_file_upward( $files, $dir = null, $stop_check = null ) {
	$files = (array) $files;
	if ( is_null( $dir ) ) {
		$dir = getcwd();
	}
	while ( is_readable( $dir ) ) {
		// Stop walking up when the supplied callable returns true being passed the $dir
		if ( is_callable( $stop_check ) && call_user_func( $stop_check, $dir ) ) {
			return null;
		}

foreach ( $files as $file ) {
			$path = $dir . DIRECTORY_SEPARATOR . $file;
			if ( file_exists( $path ) ) {
				return $path;
			}
		}

$parent_dir = dirname( $dir );
		if ( empty( $parent_dir ) || $parent_dir === $dir ) {
			break;
		}
		$dir = $parent_dir;
	}
	return null;
}

function is_path_absolute( $path ) {
	// Windows
	if ( isset( $path[1] ) && ':' === $path[1] ) {
		return true;
	}

return '/' === $path[0];
}

/**
 * Composes positional arguments into a command string.
 *
 * @param array $args Positional arguments to compose.
 * @return string
 */
function args_to_str( $args ) {
	return ' ' . implode( ' ', array_map( 'escapeshellarg', $args ) );
}

/**
 * Composes associative arguments into a command string.
 *
 * @param array $assoc_args Associative arguments to compose.
 * @return string
 */
function assoc_args_to_str( $assoc_args ) {
	$str = '';

foreach ( $assoc_args as $key => $value ) {
		if ( true === $value ) {
			$str .= " --$key";
		} elseif ( is_array( $value ) ) {
			foreach ( $value as $v ) {
				$str .= assoc_args_to_str(
					[
						$key => $v,
					]
				);
			}
		} else {
			$str .= " --$key=" . escapeshellarg( $value );
		}
	}

return $str;
}

/**
 * Given a template string and an arbitrary number of arguments,
 * returns the final command, with the parameters escaped.
 */
function esc_cmd( $cmd ) {
	if ( func_num_args() < 2 ) {
		trigger_error( 'esc_cmd() requires at least two arguments.', E_USER_WARNING );
	}

$args = func_get_args();

$cmd = array_shift( $args );

return vsprintf( $cmd, array_map( 'escapeshellarg', $args ) );
}

/**
 * Gets path to WordPress configuration.
 *
 * @return string
 */
function locate_wp_config() {
	static $path;

if ( null === $path ) {
		$path = false;

if ( getenv( 'WP_CONFIG_PATH' ) && file_exists( getenv( 'WP_CONFIG_PATH' ) ) ) {
			$path = getenv( 'WP_CONFIG_PATH' );
		} elseif ( file_exists( ABSPATH . 'wp-config.php' ) ) {
			$path = ABSPATH . 'wp-config.php';
		} elseif ( file_exists( dirname( ABSPATH ) . '/wp-config.php' ) && ! file_exists( dirname( ABSPATH ) . '/wp-settings.php' ) ) {
			$path = dirname( ABSPATH ) . '/wp-config.php';
		}

if ( $path ) {
			$path = realpath( $path );
		}
	}

return $path;
}

function wp_version_compare( $since, $operator ) {
	$wp_version = str_replace( '-src', '', $GLOBALS['wp_version'] );
	$since      = str_replace( '-src', '', $since );
	return version_compare( $wp_version, $since, $operator );
}

/**
 * Render a collection of items as an ASCII table, JSON, CSV, YAML, list of ids, or count.
 *
 * Given a collection of items with a consistent data structure:
 *
 * ```
 * $items = array(
 *     array(
 *         'key'   => 'foo',
 *         'value'  => 'bar',
 *     )
 * );
 * ```
 *
 * Render `$items` as an ASCII table:
 *
 * ```
 * WP_CLI\Utils\format_items( 'table', $items, array( 'key', 'value' ) );
 *
 * # +-----+-------+
 * # | key | value |
 * # +-----+-------+
 * # | foo | bar   |
 * # +-----+-------+
 * ```
 *
 * Or render `$items` as YAML:
 *
 * ```
 * WP_CLI\Utils\format_items( 'yaml', $items, array( 'key', 'value' ) );
 *
 * # ---
 * # -
 * #   key: foo
 * #   value: bar
 * ```
 *
 * @access public
 * @category Output
 *
 * @param string       $format Format to use: 'table', 'json', 'csv', 'yaml', 'ids', 'count'.
 * @param array        $items  An array of items to output.
 * @param array|string $fields Named fields for each item of data. Can be array or comma-separated list.
 */
function format_items( $format, $items, $fields ) {
	$assoc_args = compact( 'format', 'fields' );
	$formatter  = new Formatter( $assoc_args );
	$formatter->display_items( $items );
}

/**
 * Write data as CSV to a given file.
 *
 * @access public
 *
 * @param resource $fd      File descriptor.
 * @param array    $rows    Array of rows to output.
 * @param array    $headers List of CSV columns (optional).
 */
function write_csv( $fd, $rows, $headers = [] ) {
	if ( ! empty( $headers ) ) {
		fputcsv( $fd, $headers );
	}

foreach ( $rows as $row ) {
		if ( ! empty( $headers ) ) {
			$row = pick_fields( $row, $headers );
		}

fputcsv( $fd, array_values( $row ) );
	}
}

/**
 * Pick fields from an associative array or object.
 *
 * @param  array|object $item    Associative array or object to pick fields from.
 * @param  array        $fields  List of fields to pick.
 * @return array
 */
function pick_fields( $item, $fields ) {
	$values = [];

if ( is_object( $item ) ) {
		foreach ( $fields as $field ) {
			$values[ $field ] = isset( $item->$field ) ? $item->$field : null;
		}
	} else {
		foreach ( $fields as $field ) {
			$values[ $field ] = isset( $item[ $field ] ) ? $item[ $field ] : null;
		}
	}

return $values;
}

/**
 * Launch system's $EDITOR for the user to edit some text.
 *
 * @access public
 * @category Input
 *
 * @param string $input Some form of text to edit (e.g. post content).
 * @param string $title Title to display in the editor.
 * @param string $ext   Extension to use with the temp file.
 * @return string|bool  Edited text, if file is saved from editor; false, if no change to file.
 */
function launch_editor_for_input( $input, $title = 'WP-CLI', $ext = 'tmp' ) {

check_proc_available( 'launch_editor_for_input' );

$tmpdir = get_temp_dir();

do {
		$tmpfile  = basename( $title );
		$tmpfile  = preg_replace( '|\.[^.]*$|', '', $tmpfile );
		$tmpfile .= '-' . substr( md5( mt_rand() ), 0, 6 ); // phpcs:ignore WordPress.WP.AlternativeFunctions.rand_mt_rand -- no crypto and WP not loaded.
		$tmpfile  = $tmpdir . $tmpfile . '.' . $ext;
		$fp       = fopen( $tmpfile, 'xb' );
		if ( ! $fp && is_writable( $tmpdir ) && file_exists( $tmpfile ) ) {
			$tmpfile = '';
			continue;
		}
		if ( $fp ) {
			fclose( $fp );
		}
	} while ( ! $tmpfile );

if ( ! $tmpfile ) {
		WP_CLI::error( 'Error creating temporary file.' );
	}

file_put_contents( $tmpfile, $input );

$editor = getenv( 'EDITOR' );
	if ( ! $editor ) {
		$editor = is_windows() ? 'notepad' : 'vi';
	}

$descriptorspec = [ STDIN, STDOUT, STDERR ];
	$process        = proc_open_compat( "$editor " . escapeshellarg( $tmpfile ), $descriptorspec, $pipes );
	$r              = proc_close( $process );
	if ( $r ) {
		exit( $r );
	}

$output = file_get_contents( $tmpfile );

unlink( $tmpfile );

if ( $output === $input ) {
		return false;
	}

return $output;
}

/**
 * @param string $raw_host MySQL host string, as defined in wp-config.php.
 *
 * @return array
 */
function mysql_host_to_cli_args( $raw_host ) {
	$assoc_args = [];

/**
	 * If the host string begins with 'p:' for a persistent db connection,
	 * replace 'p:' with nothing.
	 */
	if ( substr( $raw_host, 0, 2 ) === 'p:' ) {
		$raw_host = substr_replace( $raw_host, '', 0, 2 );
	}

$host_parts = explode( ':', $raw_host );
	if ( count( $host_parts ) === 2 ) {
		list( $assoc_args['host'], $extra ) = $host_parts;
		$extra                              = trim( $extra );
		if ( is_numeric( $extra ) ) {
			$assoc_args['port']     = (int) $extra;
			$assoc_args['protocol'] = 'tcp';
		} elseif ( '' !== $extra ) {
			$assoc_args['socket'] = $extra;
		}
	} else {
		$assoc_args['host'] = $raw_host;
	}

return $assoc_args;
}

/**
 * Run a MySQL command and optionally return the output.
 *
 * @since v2.5.0 Deprecated $descriptors argument.
 *
 * @param string $cmd           Command to run.
 * @param array  $assoc_args    Associative array of arguments to use.
 * @param mixed  $_             Deprecated. Former $descriptors argument.
 * @param bool   $send_to_shell Optional. Whether to send STDOUT and STDERR
 *                              immediately to the shell. Defaults to true.
 * @param bool   $interactive   Optional. Whether MySQL is meant to be
 *                              executed as an interactive process. Defaults
 *                              to false.
 *
 * @return array {
 *     Associative array containing STDOUT and STDERR output.
 *
 *     @type string $stdout    Output that was sent to STDOUT.
 *     @type string $stderr    Output that was sent to STDERR.
 *     @type int    $exit_code Exit code of the process.
 * }
 */
function run_mysql_command( $cmd, $assoc_args, $_ = null, $send_to_shell = true, $interactive = false ) {
	check_proc_available( 'run_mysql_command' );

$descriptors = ( $interactive || $send_to_shell ) ?
		[
			0 => STDIN,
			1 => STDOUT,
			2 => STDERR,
		] :
		[
			0 => STDIN,
			1 => [ 'pipe', 'w' ],
			2 => [ 'pipe', 'w' ],
		];

$stdout = '';
	$stderr = '';
	$pipes  = [];

if ( isset( $assoc_args['host'] ) ) {
		// phpcs:ignore WordPress.DB.RestrictedFunctions.mysql_mysql_host_to_cli_args -- Misidentified as PHP native MySQL function.
		$assoc_args = array_merge( $assoc_args, mysql_host_to_cli_args( $assoc_args['host'] ) );
	}

if ( isset( $assoc_args['pass'] ) ) {
		$old_password = getenv( 'MYSQL_PWD' );
		putenv( 'MYSQL_PWD=' . $assoc_args['pass'] );
		unset( $assoc_args['pass'] );
	}

$final_cmd = force_env_on_nix_systems( $cmd ) . assoc_args_to_str( $assoc_args );

WP_CLI::debug( 'Final MySQL command: ' . $final_cmd, 'db' );
	$process = proc_open_compat( $final_cmd, $descriptors, $pipes );

if ( isset( $old_password ) ) {
		putenv( 'MYSQL_PWD=' . $old_password );
	}

if ( ! $process ) {
		WP_CLI::debug( 'Failed to create a valid process using proc_open_compat()', 'db' );
		exit( 1 );
	}

if ( is_resource( $process ) && ! $send_to_shell && ! $interactive ) {
		$stdout = stream_get_contents( $pipes[1] );
		$stderr = stream_get_contents( $pipes[2] );

fclose( $pipes[1] );
		fclose( $pipes[2] );
	}

$exit_code = proc_close( $process );

if ( $exit_code && ( $send_to_shell || $interactive ) ) {
		exit( $exit_code );
	}

return [
		$stdout,
		$stderr,
		$exit_code,
	];
}

/**
 * Render PHP or other types of files using Mustache templates.
 *
 * IMPORTANT: Automatic HTML escaping is disabled!
 */
function mustache_render( $template_name, $data = [] ) {
	if ( ! file_exists( $template_name ) ) {
		$template_name = WP_CLI_ROOT . "/templates/$template_name";
	}

$template = file_get_contents( $template_name );

$mustache = new Mustache_Engine(
		[
			'escape' => function ( $val ) {
				return $val; },
		]
	);

return $mustache->render( $template, $data );
}

/**
 * Create a progress bar to display percent completion of a given operation.
 *
 * Progress bar is written to STDOUT, and disabled when command is piped. Progress
 * advances with `$progress->tick()`, and completes with `$progress->finish()`.
 * Process bar also indicates elapsed time and expected total time.
 *
 * ```
 * # `wp user generate` ticks progress bar each time a new user is created.
 * #
 * # $ wp user generate --count=500
 * # Generating users  22 % [=======>                             ] 0:05 / 0:23
 *
 * $progress = \WP_CLI\Utils\make_progress_bar( 'Generating users', $count );
 * for ( $i = 0; $i < $count; $i++ ) {
 *     // uses wp_insert_user() to insert the user
 *     $progress->tick();
 * }
 * $progress->finish();
 * ```
 *
 * @access public
 * @category Output
 *
 * @param string  $message  Text to display before the progress bar.
 * @param integer $count    Total number of ticks to be performed.
 * @param int     $interval Optional. The interval in milliseconds between updates. Default 100.
 * @return cli\progress\Bar|NoOp
 */
function make_progress_bar( $message, $count, $interval = 100 ) {
	if ( Shell::isPiped() ) {
		return new NoOp();
	}

return new Bar( $message, $count, $interval );
}

/**
 * Helper function to use wp_parse_url when available or fall back to PHP's
 * parse_url if not.
 *
 * Additionally, this adds 'http://' to the URL if no scheme was found.
 *
 * @param string $url             The URL to parse.
 * @param int    $component       Optional. The specific component to retrieve.
 *                                Use one of the PHP predefined constants to
 *                                specify which one. Defaults to -1 (= return
 *                                all parts as an array).
 * @param bool   $auto_add_scheme Optional. Automatically add an http:// scheme if
 *                                none was found. Defaults to true.
 * @return mixed False on parse failure; Array of URL components on success;
 *               When a specific component has been requested: null if the
 *               component doesn't exist in the given URL; a string or - in the
 *               case of PHP_URL_PORT - integer when it does. See parse_url()'s
 *               return values.
 */
function parse_url( $url, $component = - 1, $auto_add_scheme = true ) {
	if (
		function_exists( 'wp_parse_url' )
		&& (
			-1 === $component
			|| wp_version_compare( '4.7', '>=' )
		)
	) {
		$url_parts = wp_parse_url( $url, $component );
	} else {
		// phpcs:ignore WordPress.WP.AlternativeFunctions.parse_url_parse_url -- Fallback.
		$url_parts = \parse_url( $url, $component );
	}

// phpcs:ignore WordPress.WP.AlternativeFunctions.parse_url_parse_url -- Own version based on WP one.
	if ( $auto_add_scheme && ! parse_url( $url, PHP_URL_SCHEME, false ) ) {
		// phpcs:ignore WordPress.WP.AlternativeFunctions.parse_url_parse_url -- Own version based on WP one.
		$url_parts = parse_url( 'http://' . $url, $component, false );
	}

return $url_parts;
}

/**
 * Check if we're running in a Windows environment (cmd.exe).
 *
 * @return bool
 */
function is_windows() {
	$test_is_windows = getenv( 'WP_CLI_TEST_IS_WINDOWS' );
	return false !== $test_is_windows ? (bool) $test_is_windows : strtoupper( substr( PHP_OS, 0, 3 ) ) === 'WIN';
}

/**
 * Replace magic constants in some PHP source code.
 *
 * Replaces the __FILE__ and __DIR__ magic constants with the values they are
 * supposed to represent at runtime.
 *
 * @param string $source The PHP code to manipulate.
 * @param string $path The path to use instead of the magic constants.
 * @return string Adapted PHP code.
 */
function replace_path_consts( $source, $path ) {
	// Solve issue with Windows allowing single quotes in account names.
	$file = addslashes( $path );

if ( file_exists( $file ) ) {
		$file = realpath( $file );
	}

$dir = dirname( $file );

// Replace __FILE__ and __DIR__ constants with value of $file or $dir.
	return preg_replace_callback(
		FILE_DIR_PATTERN,
		static function ( $matches ) use ( $file, $dir ) {
			if ( ! empty( $matches['file'] ) ) {
				return "'{$file}'";
			}

if ( ! empty( $matches['dir'] ) ) {
				return "'{$dir}'";
			}

return $matches[0];
		},
		$source
	);
}

/**
 * Make a HTTP request to a remote URL.
 *
 * Wraps the Requests HTTP library to ensure every request includes a cert.
 *
 * ```
 * # `wp core download` verifies the hash for a downloaded WordPress archive
 *
 * $md5_response = Utils\http_request( 'GET', $download_url . '.md5' );
 * if ( 20 != substr( $md5_response->status_code, 0, 2 ) ) {
 *      WP_CLI::error( "Couldn't access md5 hash for release (HTTP code {$response->status_code})" );
 * }
 * ```
 *
 * @access public
 *
 * @param string $method  HTTP method (GET, POST, DELETE, etc.).
 * @param string $url     URL to make the HTTP request to.
 * @param array  $headers Add specific headers to the request.
 * @param array  $options {
 *     Optional. An associative array of additional request options.
 *
 *     @type bool $halt_on_error Whether or not command execution should be halted on error. Default: true
 *     @type bool|string $verify A boolean to use enable/disable SSL verification
 *                               or string absolute path to CA cert to use.
 *                               Defaults to detected CA cert bundled with the Requests library.
 *     @type bool $insecure      Whether to retry automatically without certificate validation.
 * }
 * @return object
 * @throws RuntimeException If the request failed.
 * @throws ExitException If the request failed and $halt_on_error is true.
 */
function http_request( $method, $url, $data = null, $headers = [], $options = [] ) {

if ( ! class_exists( 'Requests_Hooks' ) ) {
		// Autoloader for the Requests library has not been registered yet.
		Requests::register_autoloader();
	}

$insecure      = isset( $options['insecure'] ) && (bool) $options['insecure'];
	$halt_on_error = ! isset( $options['halt_on_error'] ) || (bool) $options['halt_on_error'];
	unset( $options['halt_on_error'] );

if ( ! isset( $options['verify'] ) ) {
		// 'curl.cainfo' enforces the CA file to use, otherwise fallback to system-wide defaults then use the embedded CA file.
		$options['verify'] = ! empty( ini_get( 'curl.cainfo' ) ) ? ini_get( 'curl.cainfo' ) : true;
	}

try {
		try {
			return Requests::request( $url, $headers, $data, $method, $options );
		} catch ( Requests_Exception $ex ) {
			if ( true !== $options['verify'] || 'curlerror' !== $ex->getType() || curl_errno( $ex->getData() ) !== CURLE_SSL_CACERT ) {
				throw $ex;
			}

$options['verify'] = get_default_cacert( $halt_on_error );

return Requests::request( $url, $headers, $data, $method, $options );
		}
	} catch ( Requests_Exception $ex ) {
		// CURLE_SSL_CACERT_BADFILE only defined for PHP >= 7.
		if (
			! $insecure
			||
			'curlerror' !== $ex->getType()
			||
			! in_array( curl_errno( $ex->getData() ), [ CURLE_SSL_CONNECT_ERROR, CURLE_SSL_CERTPROBLEM, 77 /*CURLE_SSL_CACERT_BADFILE*/ ], true )
		) {
			$error_msg = sprintf( "Failed to get url '%s': %s.", $url, $ex->getMessage() );
			if ( $halt_on_error ) {
				WP_CLI::error( $error_msg );
			}
			throw new RuntimeException( $error_msg, null, $ex );
		}

$warning = sprintf(
			"Re-trying without verify after failing to get verified url '%s' %s.",
			$url,
			$ex->getMessage()
		);
		WP_CLI::warning( $warning );

// Disable certificate validation for the next try.
		$options['verify'] = false;

try {
			return Requests::request( $url, $headers, $data, $method, $options );
		} catch ( Requests_Exception $ex ) {
			$error_msg = sprintf( "Failed to get non-verified url '%s' %s.", $url, $ex->getMessage() );
			if ( $halt_on_error ) {
				WP_CLI::error( $error_msg );
			}
			throw new RuntimeException( $error_msg, null, $ex );
		}
	}
}

/**
 * Gets the full path to the default CA cert.
 *
 * @param bool $halt_on_error Whether or not command execution should be halted on error. Default: false
 * @return string Absolute path to the default CA cert.
 * @throws RuntimeException If unable to locate the cert.
 * @throws ExitException If unable to locate the cert and $halt_on_error is true.
 */
function get_default_cacert( $halt_on_error = false ) {
	$cert_path = '/rmccue/requests/library/Requests/Transport/cacert.pem';
	$error_msg = 'Cannot find SSL certificate.';

if ( inside_phar() ) {
		// cURL can't read Phar archives
		return extract_from_phar( WP_CLI_VENDOR_DIR . $cert_path );
	}

foreach ( get_vendor_paths() as $vendor_path ) {
		if ( file_exists( $vendor_path . $cert_path ) ) {
			return $vendor_path . $cert_path;
		}
	}

if ( $halt_on_error ) {
		WP_CLI::error( $error_msg );
	}

throw new RuntimeException( $error_msg );
}

/**
 * Increments a version string using the "x.y.z-pre" format.
 *
 * Can increment the major, minor or patch number by one.
 * If $new_version == "same" the version string is not changed.
 * If $new_version is not a known keyword, it will be used as the new version string directly.
 *
 * @param string $current_version
 * @param string $new_version
 * @return string
 */
function increment_version( $current_version, $new_version ) {
	// split version assuming the format is x.y.z-pre
	$current_version    = explode( '-', $current_version, 2 );
	$current_version[0] = explode( '.', $current_version[0] );

switch ( $new_version ) {
		case 'same':
			// do nothing
			break;

case 'patch':
			$current_version[0][2]++;

$current_version = [ $current_version[0] ]; // Drop possible pre-release info.
			break;

case 'minor':
			$current_version[0][1]++;
			$current_version[0][2] = 0;

$current_version = [ $current_version[0] ]; // Drop possible pre-release info.
			break;

case 'major':
			$current_version[0][0]++;
			$current_version[0][1] = 0;
			$current_version[0][2] = 0;

$current_version = [ $current_version[0] ]; // Drop possible pre-release info.
			break;

default: // not a keyword
			$current_version = [ [ $new_version ] ];
			break;
	}

// Reconstruct version string.
	$current_version[0] = implode( '.', $current_version[0] );
	$current_version    = implode( '-', $current_version );

return $current_version;
}

/**
 * Compare two version strings to get the named semantic version.
 *
 * @access public
 *
 * @param string $new_version
 * @param string $original_version
 * @return string 'major', 'minor', 'patch'
 */
function get_named_sem_ver( $new_version, $original_version ) {

if ( ! Comparator::greaterThan( $new_version, $original_version ) ) {
		return '';
	}

$parts = explode( '-', $original_version );
	$bits  = explode( '.', $parts[0] );
	$major = $bits[0];
	if ( isset( $bits[1] ) ) {
		$minor = $bits[1];
	}
	if ( isset( $bits[2] ) ) {
		$patch = $bits[2];
	}

if ( isset( $minor ) && Semver::satisfies( $new_version, "{$major}.{$minor}.x" ) ) {
		return 'patch';
	}

if ( Semver::satisfies( $new_version, "{$major}.x.x" ) ) {
		return 'minor';
	}

return 'major';
}

/**
 * Return the flag value or, if it's not set, the $default value.
 *
 * Because flags can be negated (e.g. --no-quiet to negate --quiet), this
 * function provides a safer alternative to using
 * `isset( $assoc_args['quiet'] )` or similar.
 *
 * @access public
 * @category Input
 *
 * @param array  $assoc_args Arguments array.
 * @param string $flag       Flag to get the value.
 * @param mixed  $default    Default value for the flag. Default: NULL.
 * @return mixed
 */
function get_flag_value( $assoc_args, $flag, $default = null ) {
	return isset( $assoc_args[ $flag ] ) ? $assoc_args[ $flag ] : $default;
}

/**
 * Get the home directory.
 *
 * @access public
 * @category System
 *
 * @return string
 */
function get_home_dir() {
	$home = getenv( 'HOME' );
	if ( ! $home ) {
		// In Windows $HOME may not be defined
		$home = getenv( 'HOMEDRIVE' ) . getenv( 'HOMEPATH' );
	}

return rtrim( $home, '/\\' );
}

/**
 * Appends a trailing slash.
 *
 * @access public
 * @category System
 *
 * @param string $string What to add the trailing slash to.
 * @return string String with trailing slash added.
 */
function trailingslashit( $string ) {
	return rtrim( $string, '/\\' ) . '/';
}

/**
 * Normalize a filesystem path.
 *
 * On Windows systems, replaces backslashes with forward slashes
 * and forces upper-case drive letters.
 * Allows for two leading slashes for Windows network shares, but
 * ensures that all other duplicate slashes are reduced to a single one.
 * Ensures upper-case drive letters on Windows systems.
 *
 * @access public
 * @category System
 *
 * @param string $path Path to normalize.
 * @return string Normalized path.
 */
function normalize_path( $path ) {
	$path = str_replace( '\\', '/', $path );
	$path = preg_replace( '|(?<=.)/+|', '/', $path );
	if ( ':' === substr( $path, 1, 1 ) ) {
		$path = ucfirst( $path );
	}
	return $path;
}

/**
 * Convert Windows EOLs to *nix.
 *
 * @param string $str String to convert.
 * @return string String with carriage return / newline pairs reduced to newlines.
 */
function normalize_eols( $str ) {
	return str_replace( "\r\n", "\n", $str );
}

/**
 * Get the system's temp directory. Warns user if it isn't writable.
 *
 * @access public
 * @category System
 *
 * @return string
 */
function get_temp_dir() {
	static $temp = '';

if ( $temp ) {
		return $temp;
	}

// `sys_get_temp_dir()` introduced PHP 5.2.1. Will always return something.
	$temp = trailingslashit( sys_get_temp_dir() );

if ( ! is_writable( $temp ) ) {
		WP_CLI::warning( "Temp directory isn't writable: {$temp}" );
	}

return $temp;
}

/**
 * Parse a SSH url for its host, port, and path.
 *
 * Similar to parse_url(), but adds support for defined SSH aliases.
 *
 * ```
 * host OR host/path/to/wordpress OR host:port/path/to/wordpress
 * ```
 *
 * @access public
 *
 * @return mixed
 */
function parse_ssh_url( $url, $component = -1 ) {
	preg_match( '#^((docker|docker\-compose|ssh|vagrant):)?(([^@:]+)@)?([^:/~]+)(:([\d]*))?((/|~)(.+))?$#', $url, $matches );
	$bits = [];
	foreach ( [
		2 => 'scheme',
		4 => 'user',
		5 => 'host',
		7 => 'port',
		8 => 'path',
	] as $i => $key ) {
		if ( ! empty( $matches[ $i ] ) ) {
			$bits[ $key ] = $matches[ $i ];
		}
	}

// Find the hostname from `vagrant ssh-config` automatically.
	if ( preg_match( '/^vagrant:?/', $url ) ) {
		if ( 'vagrant' === $bits['host'] && empty( $bits['scheme'] ) ) {
			$bits['scheme'] = 'vagrant';
			$bits['host']   = '';
		}
	}

switch ( $component ) {
		case PHP_URL_SCHEME:
			return isset( $bits['scheme'] ) ? $bits['scheme'] : null;
		case PHP_URL_USER:
			return isset( $bits['user'] ) ? $bits['user'] : null;
		case PHP_URL_HOST:
			return isset( $bits['host'] ) ? $bits['host'] : null;
		case PHP_URL_PATH:
			return isset( $bits['path'] ) ? $bits['path'] : null;
		case PHP_URL_PORT:
			return isset( $bits['port'] ) ? $bits['port'] : null;
		default:
			return $bits;
	}
}

/**
 * Report the results of the same operation against multiple resources.
 *
 * @access public
 * @category Input
 *
 * @param string       $noun      Resource being affected (e.g. plugin).
 * @param string       $verb      Type of action happening to the noun (e.g. activate).
 * @param integer      $total     Total number of resource being affected.
 * @param integer      $successes Number of successful operations.
 * @param integer      $failures  Number of failures.
 * @param null|integer $skips     Optional. Number of skipped operations. Default null (don't show skips).
 */
function report_batch_operation_results( $noun, $verb, $total, $successes, $failures, $skips = null ) {
	$plural_noun           = $noun . 's';
	$past_tense_verb       = past_tense_verb( $verb );
	$past_tense_verb_upper = ucfirst( $past_tense_verb );
	if ( $failures ) {
		$failed_skipped_message = null === $skips ? '' : " ({$failures} failed" . ( $skips ? ", {$skips} skipped" : '' ) . ')';
		if ( $successes ) {
			WP_CLI::error( "Only {$past_tense_verb} {$successes} of {$total} {$plural_noun}{$failed_skipped_message}." );
		} else {
			WP_CLI::error( "No {$plural_noun} {$past_tense_verb}{$failed_skipped_message}." );
		}
	} else {
		$skipped_message = $skips ? " ({$skips} skipped)" : '';
		if ( $successes || $skips ) {
			WP_CLI::success( "{$past_tense_verb_upper} {$successes} of {$total} {$plural_noun}{$skipped_message}." );
		} else {
			$message = $total > 1 ? ucfirst( $plural_noun ) : ucfirst( $noun );
			WP_CLI::success( "{$message} already {$past_tense_verb}." );
		}
	}
}

/**
 * Parse a string of command line arguments into an $argv-esqe variable.
 *
 * @access public
 * @category Input
 *
 * @param string $arguments
 * @return array
 */
function parse_str_to_argv( $arguments ) {
	preg_match_all( '/(?:--[^\s=]+=(["\'])((\\{2})*|(?:[^\1]+?[^\\\\](\\{2})*))\1|--[^\s=]+=[^\s]+|--[^\s=]+|(["\'])((\\{2})*|(?:[^\5]+?[^\\\\](\\{2})*))\5|[^\s]+)/', $arguments, $matches );
	$argv = isset( $matches[0] ) ? $matches[0] : [];
	return array_map(
		static function ( $arg ) {
			foreach ( [ '"', "'" ] as $char ) {
				if ( substr( $arg, 0, 1 ) === $char && substr( $arg, -1 ) === $char ) {
					$arg = substr( $arg, 1, -1 );
					break;
				}
			}
				return $arg;
		},
		$argv
	);
}

/**
 * Locale-independent version of basename()
 *
 * @access public
 *
 * @param string $path
 * @param string $suffix
 * @return string
 */
function basename( $path, $suffix = '' ) {
	// phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.urlencode_urlencode -- Format required by wordpress.org API.
	return urldecode( \basename( str_replace( [ '%2F', '%5C' ], '/', urlencode( $path ) ), $suffix ) );
}

/**
 * Checks whether the output of the current script is a TTY or a pipe / redirect
 *
 * Returns true if STDOUT output is being redirected to a pipe or a file; false is
 * output is being sent directly to the terminal.
 *
 * If an env variable SHELL_PIPE exists, returned result depends on its
 * value. Strings like 1, 0, yes, no, that validate to booleans are accepted.
 *
 * To enable ASCII formatting even when the shell is piped, use the
 * ENV variable SHELL_PIPE=0.
 *
 * @access public
 *
 * @return bool
 */
function isPiped() { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionNameInvalid -- Renaming would break BC.
	$shell_pipe = getenv( 'SHELL_PIPE' );

if ( false !== $shell_pipe ) {
		return filter_var( $shell_pipe, FILTER_VALIDATE_BOOLEAN );
	}

return function_exists( 'posix_isatty' ) && ! posix_isatty( STDOUT );
}

/**
 * Expand within paths to their matching paths.
 *
 * Has no effect on paths which do not use glob patterns.
 *
 * @param string|array $paths Single path as a string, or an array of paths.
 * @param int          $flags Optional. Flags to pass to glob. Defaults to GLOB_BRACE.
 * @return array Expanded paths.
 */
function expand_globs( $paths, $flags = 'default' ) {
	// Compatibility for systems without GLOB_BRACE.
	$glob_func = 'glob';
	if ( 'default' === $flags ) {
		if ( ! defined( 'GLOB_BRACE' ) || getenv( 'WP_CLI_TEST_EXPAND_GLOBS_NO_GLOB_BRACE' ) ) {
			$glob_func = 'WP_CLI\Utils\glob_brace';
		} else {
			$flags = GLOB_BRACE;
		}
	}

$expanded = [];

foreach ( (array) $paths as $path ) {
		$matching = [ $path ];

if ( preg_match( '/[' . preg_quote( '*?[]{}!', '/' ) . ']/', $path ) ) {
			$matching = $glob_func( $path, $flags ) ?: [];
		}
		$expanded = array_merge( $expanded, $matching );
	}

return array_values( array_unique( $expanded ) );
}

/**
 * Simulate a `glob()` with the `GLOB_BRACE` flag set. For systems (eg Alpine Linux) built against a libc library (eg https://www.musl-libc.org/) that lacks it.
 * Copied and adapted from Zend Framework's `Glob::fallbackGlob()` and Glob::nextBraceSub()`.
 *
 * Zend Framework (https://framework.zend.com/)
 *
 * @link      https://github.com/zendframework/zf2 for the canonical source repository
 * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (https://www.zend.com)
 * @license   https://framework.zend.com/license/new-bsd New BSD License
 *
 * @param string $pattern     Filename pattern.
 * @param void   $dummy_flags Not used.
 * @return array Array of paths.
 */
function glob_brace( $pattern, $dummy_flags = null ) {

static $next_brace_sub;
	if ( ! $next_brace_sub ) {
		// Find the end of the subpattern in a brace expression.
		$next_brace_sub = function ( $pattern, $current ) {
			$length = strlen( $pattern );
			$depth  = 0;

while ( $current < $length ) {
				if ( '\\' === $pattern[ $current ] ) {
					if ( ++$current === $length ) {
						break;
					}
					$current++;
				} else {
					if ( ( '}' === $pattern[ $current ] && 0 === $depth-- ) || ( ',' === $pattern[ $current ] && 0 === $depth ) ) {
						break;
					}

if ( '{' === $pattern[ $current++ ] ) {
						$depth++;
					}
				}
			}

return $current < $length ? $current : null;
		};
	}

$length = strlen( $pattern );

// Find first opening brace.
	for ( $begin = 0; $begin < $length; $begin++ ) {
		if ( '\\' === $pattern[ $begin ] ) {
			$begin++;
		} elseif ( '{' === $pattern[ $begin ] ) {
			break;
		}
	}

// Find comma or matching closing brace.
	$next = $next_brace_sub( $pattern, $begin + 1 );
	if ( null === $next ) {
		return glob( $pattern );
	}

$rest = $next;

// Point `$rest` to matching closing brace.
	while ( '}' !== $pattern[ $rest ] ) {
		$rest = $next_brace_sub( $pattern, $rest + 1 );
		if ( null === $rest ) {
			return glob( $pattern );
		}
	}

$paths = [];
	$p     = $begin + 1;

// For each comma-separated subpattern.
	do {
		$subpattern = substr( $pattern, 0, $begin )
					. substr( $pattern, $p, $next - $p )
					. substr( $pattern, $rest + 1 );

$result = glob_brace( $subpattern );
		if ( ! empty( $result ) ) {
			$paths = array_merge( $paths, $result );
		}

if ( '}' === $pattern[ $next ] ) {
			break;
		}

$p    = $next + 1;
		$next = $next_brace_sub( $pattern, $p );
	} while ( null !== $next );

return array_values( array_unique( $paths ) );
}

/**
 * Get the closest suggestion for a mis-typed target term amongst a list of
 * options.
 *
 * Uses the Levenshtein algorithm to calculate the relative "distance" between
 * terms.
 *
 * If the "distance" to the closest term is higher than the threshold, an empty
 * string is returned.
 *
 * @param string $target    Target term to get a suggestion for.
 * @param array  $options   Array with possible options.
 * @param int    $threshold Threshold above which to return an empty string.
 * @return string
 */
function get_suggestion( $target, array $options, $threshold = 2 ) {

$suggestion_map = [
		'add'        => 'create',
		'check'      => 'check-update',
		'capability' => 'cap',
		'clear'      => 'flush',
		'decrement'  => 'decr',
		'del'        => 'delete',
		'directory'  => 'dir',
		'exec'       => 'eval',
		'exec-file'  => 'eval-file',
		'increment'  => 'incr',
		'language'   => 'locale',
		'lang'       => 'locale',
		'new'        => 'create',
		'number'     => 'count',
		'remove'     => 'delete',
		'regen'      => 'regenerate',
		'rep'        => 'replace',
		'repl'       => 'replace',
		'trash'      => 'delete',
		'v'          => 'version',
	];

if ( array_key_exists( $target, $suggestion_map ) && in_array( $suggestion_map[ $target ], $options, true ) ) {
		return $suggestion_map[ $target ];
	}

if ( empty( $options ) ) {
		return '';
	}
	foreach ( $options as $option ) {
		$distance               = levenshtein( $option, $target );
		$levenshtein[ $option ] = $distance;
	}

// Sort known command strings by distance to user entry.
	asort( $levenshtein );

// Fetch the closest command string.
	reset( $levenshtein );
	$suggestion = key( $levenshtein );

// Only return a suggestion if below a given threshold.
	return $levenshtein[ $suggestion ] <= $threshold && $suggestion !== $target
		? (string) $suggestion
		: '';
}

/**
 * Get a Phar-safe version of a path.
 *
 * For paths inside a Phar, this strips the outer filesystem's location to
 * reduce the path to what it needs to be within the Phar archive.
 *
 * Use the __FILE__ or __DIR__ constants as a starting point.
 *
 * @param string $path An absolute path that might be within a Phar.
 * @return string A Phar-safe version of the path.
 */
function phar_safe_path( $path ) {

if ( ! inside_phar() ) {
		return $path;
	}

return str_replace(
		PHAR_STREAM_PREFIX . WP_CLI_PHAR_PATH . '/',
		PHAR_STREAM_PREFIX,
		$path
	);
}

/**
 * Maybe prefix command string with "/usr/bin/env".
 * Removes (if there) if Windows, adds (if not there) if not.
 *
 * @param string $command
 * @return string
 */
function force_env_on_nix_systems( $command ) {
	$env_prefix     = '/usr/bin/env ';
	$env_prefix_len = strlen( $env_prefix );
	if ( is_windows() ) {
		if ( 0 === strncmp( $command, $env_prefix, $env_prefix_len ) ) {
			$command = substr( $command, $env_prefix_len );
		}
	} elseif ( 0 !== strncmp( $command, $env_prefix, $env_prefix_len ) ) {
		$command = $env_prefix . $command;
	}
	return $command;
}

/**
 * Check that `proc_open()` and `proc_close()` haven't been disabled.
 *
 * @param string $context Optional. If set will appear in error message. Default null.
 * @param bool   $return  Optional. If set will return false rather than error out. Default false.
 * @return bool
 */
function check_proc_available( $context = null, $return = false ) {
	if ( ! function_exists( 'proc_open' ) || ! function_exists( 'proc_close' ) ) {
		if ( $return ) {
			return false;
		}
		$msg = 'The PHP functions `proc_open()` and/or `proc_close()` are disabled. Please check your PHP ini directive `disable_functions` or suhosin settings.';
		if ( $context ) {
			WP_CLI::error( sprintf( "Cannot do '%s': %s", $context, $msg ) );
		} else {
			WP_CLI::error( $msg );
		}
	}
	return true;
}

/**
 * Returns past tense of verb, with limited accuracy. Only regular verbs catered for, apart from "reset".
 *
 * @param string $verb Verb to return past tense of.
 * @return string
 */
function past_tense_verb( $verb ) {
	static $irregular = [
		'reset' => 'reset',
	];
	if ( isset( $irregular[ $verb ] ) ) {
		return $irregular[ $verb ];
	}
	$last = substr( $verb, -1 );
	if ( 'e' === $last ) {
		$verb = substr( $verb, 0, -1 );
	} elseif ( 'y' === $last && ! preg_match( '/[aeiou]y$/', $verb ) ) {
		$verb = substr( $verb, 0, -1 ) . 'i';
	} elseif ( preg_match( '/^[^aeiou]*[aeiou][^aeiouhwxy]$/', $verb ) ) {
		// Rule of thumb that most (all?) one-voweled regular verbs ending in vowel + consonant (excluding "h", "w", "x", "y") double their final consonant - misses many cases (eg "submit").
		$verb .= $last;
	}
	return $verb . 'ed';
}

/**
 * Get the path to the PHP binary used when executing WP-CLI.
 *
 * Environment values permit specific binaries to be indicated.
 *
 * @access public
 * @category System
 *
 * @return string
 */
function get_php_binary() {
	$wp_cli_php_used = getenv( 'WP_CLI_PHP_USED' );
	if ( false !== $wp_cli_php_used ) {
		return $wp_cli_php_used;
	}

$wp_cli_php = getenv( 'WP_CLI_PHP' );
	if ( false !== $wp_cli_php ) {
		return $wp_cli_php;
	}

return PHP_BINARY;
}

/**
 * Windows compatible `proc_open()`.
 * Works around bug in PHP, and also deals with *nix-like `ENV_VAR=blah cmd` environment variable prefixes.
 *
 * @access public
 *
 * @param string $cmd            Command to execute.
 * @param array  $descriptorspec Indexed array of descriptor numbers and their values.
 * @param array  &$pipes         Indexed array of file pointers that correspond to PHP's end of any pipes that are created.
 * @param string $cwd            Initial working directory for the command.
 * @param array  $env            Array of environment variables.
 * @param array  $other_options  Array of additional options (Windows only).
 * @return resource Command stripped of any environment variable settings.
 */
function proc_open_compat( $cmd, $descriptorspec, &$pipes, $cwd = null, $env = null, $other_options = null ) {
	if ( is_windows() ) {
		// Need to encompass the whole command in double quotes - PHP bug https://bugs.php.net/bug.php?id=49139
		$cmd = '"' . _proc_open_compat_win_env( $cmd, $env ) . '"';
	}
	return proc_open( $cmd, $descriptorspec, $pipes, $cwd, $env, $other_options );
}

/**
 * For use by `proc_open_compat()` only. Separated out for ease of testing. Windows only.
 * Turns *nix-like `ENV_VAR=blah command` environment variable prefixes into stripped `cmd` with prefixed environment variables added to passed in environment array.
 *
 * @access private
 *
 * @param string $cmd Command to execute.
 * @param array &$env Array of existing environment variables. Will be modified if any settings in command.
 * @return string Command stripped of any environment variable settings.
 */
function _proc_open_compat_win_env( $cmd, &$env ) {
	if ( false !== strpos( $cmd, '=' ) ) {
		while ( preg_match( '/^([A-Za-z_][A-Za-z0-9_]*)=("[^"]*"|[^ ]*) /', $cmd, $matches ) ) {
			$cmd = substr( $cmd, strlen( $matches[0] ) );
			if ( null === $env ) {
				$env = [];
			}
			$env[ $matches[1] ] = isset( $matches[2][0] ) && '"' === $matches[2][0] ? substr( $matches[2], 1, -1 ) : $matches[2];
		}
	}
	return $cmd;
}

/**
 * First half of escaping for LIKE special characters % and _ before preparing for MySQL.
 *
 * Use this only before wpdb::prepare() or esc_sql().  Reversing the order is very bad for security.
 *
 * Copied from core "wp-includes/wp-db.php". Avoids dependency on WP 4.4 wpdb.
 *
 * @access public
 *
 * @param string $text The raw text to be escaped. The input typed by the user should have no
 *                     extra or deleted slashes.
 * @return string Text in the form of a LIKE phrase. The output is not SQL safe. Call $wpdb::prepare()
 *                or real_escape next.
 */
function esc_like( $text ) {
	return addcslashes( $text, '_%\\' );
}

/**
 * Escapes (backticks) MySQL identifiers (aka schema object names) - i.e. column names, table names, and database/index/alias/view etc names.
 * See https://dev.mysql.com/doc/refman/5.5/en/identifiers.html
 *
 * @param  string|array $idents A single identifier or an array of identifiers.
 * @return string|array An escaped string if given a string, or an array of escaped strings if given an array of strings.
 */
function esc_sql_ident( $idents ) {
	$backtick = static function ( $v ) {
		// Escape any backticks in the identifier by doubling.
		return '`' . str_replace( '`', '``', $v ) . '`';
	};
	if ( is_string( $idents ) ) {
		return $backtick( $idents );
	}
	return array_map( $backtick, $idents );
}

/**
 * Check whether a given string is a valid JSON representation.
 *
 * @param string $argument       String to evaluate.
 * @param bool   $ignore_scalars Optional. Whether to ignore scalar values.
 *                               Defaults to true.
 * @return bool Whether the provided string is a valid JSON representation.
 */
function is_json( $argument, $ignore_scalars = true ) {
	if ( ! is_string( $argument ) || '' === $argument ) {
		return false;
	}

if ( $ignore_scalars && ! in_array( $argument[0], [ '{', '[' ], true ) ) {
		return false;
	}

json_decode( $argument, $assoc = true );

return json_last_error() === JSON_ERROR_NONE;
}

/**
 * Parse known shell arrays included in the $assoc_args array.
 *
 * @param array $assoc_args      Associative array of arguments.
 * @param array $array_arguments Array of argument keys that should receive an
 *                               array through the shell.
 * @return array
 */
function parse_shell_arrays( $assoc_args, $array_arguments ) {
	if ( empty( $assoc_args ) || empty( $array_arguments ) ) {
		return $assoc_args;
	}

foreach ( $array_arguments as $key ) {
		if ( array_key_exists( $key, $assoc_args ) && is_json( $assoc_args[ $key ] ) ) {
			$assoc_args[ $key ] = json_decode( $assoc_args[ $key ], $assoc = true );
		}
	}

return $assoc_args;
}

/**
 * Describe a callable as a string.
 *
 * @param callable $callable The callable to describe.
 * @return string String description of the callable.
 */
function describe_callable( $callable ) {
	try {
		if ( $callable instanceof Closure ) {
			$reflection = new ReflectionFunction( $callable );

return "Closure in file {$reflection->getFileName()} at line {$reflection->getStartLine()}";
		}

if ( is_array( $callable ) ) {
			if ( is_object( $callable[0] ) ) {
				return sprintf(
					'%s->%s()',
					get_class( $callable[0] ),
					$callable[1]
				);
			}

return sprintf( '%s::%s()', $callable[0], $callable[1] );
		}

return gettype( $callable );
	} catch ( Exception $exception ) {
		return 'Callable of unknown type';
	}
}

/**
 * Checks if the given class and method pair is a valid callable.
 *
 * This accommodates changes to `is_callable()` in PHP 8 that mean an array of a
 * classname and instance method is no longer callable.
 *
 * @param array $pair The class and method pair to check.
 * @return bool
 */
function is_valid_class_and_method_pair( $pair ) {
	if ( ! is_array( $pair ) || 2 !== count( $pair ) ) {
		return false;
	}

if ( ! is_string( $pair[0] ) || ! is_string( $pair[1] ) ) {
		return false;
	}

if ( ! class_exists( $pair[0] ) ) {
		return false;
	}

if ( ! method_exists( $pair[0], $pair[1] ) ) {
		return false;
	}

return true;
}

/**
 * Pluralizes a noun in a grammatically correct way.
 *
 * @param string   $noun  Noun to be pluralized. Needs to be in singular form.
 * @param int|null $count Optional. Count of the nouns, to decide whether to
 *                        pluralize. Will pluralize unconditionally if none
 *                        provided.
 * @return string Pluralized noun.
 */
function pluralize( $noun, $count = null ) {
	if ( 1 === $count ) {
		return $noun;
	}

return Inflector::pluralize( $noun );
}

/**
 * Get the path to the mysql binary.
 *
 * @return string Path to the mysql binary, or an empty string if not found.
 */
function get_mysql_binary_path() {
	static $path = null;

if ( null === $path ) {
		$result = Process::create( '/usr/bin/env which mysql', null, null )->run();

if ( 0 !== $result->return_code ) {
			$path = '';
		} else {
			$path = trim( $result->stdout );
		}
	}

return $path;
}

/**
 * Get the version of the MySQL database.
 *
 * @return string Version of the MySQL database, or an empty string if not
 *                found.
 */
function get_mysql_version() {
	static $version = null;

if ( null === $version ) {
		$result = Process::create( '/usr/bin/env mysql --version', null, null )->run();

if ( 0 !== $result->return_code ) {
			$version = '';
		} else {
			$version = trim( $result->stdout );
		}
	}

return $version;
}

/**
 * Get the SQL modes of the MySQL session.
 *
 * @return string[] Array of SQL modes, or an empty array if they couldn't be
 *                  read.
 */
function get_sql_modes() {
	static $sql_modes = null;

if ( null === $sql_modes ) {
		$result = Process::create( '/usr/bin/env mysql --no-auto-rehash --batch --skip-column-names --execute="SELECT @@SESSION.sql_mode"', null, null )->run();

if ( 0 !== $result->return_code ) {
			$sql_modes = [];
		} else {
			$sql_modes = array_filter(
				array_map(
					'trim',
					preg_split( "/\r\n|\n|\r/", $result->stdout )
				)
			);
		}
	}

return $sql_modes;
}
<?php

namespace WP_CLI;

use WP_CLI\Bootstrap\BootstrapState;
use WP_CLI\Bootstrap\BootstrapStep;

/**
 * Get the list of ordered steps that need to be processed to bootstrap WP-CLI.
 *
 * Each entry is a fully qualified class name for a class implementing the
 * `WP_CLI\Bootstrap\BootstrapStep` interface.
 *
 * @return string[]
 */
function get_bootstrap_steps() {
	return [
		'WP_CLI\Bootstrap\DeclareFallbackFunctions',
		'WP_CLI\Bootstrap\LoadUtilityFunctions',
		'WP_CLI\Bootstrap\LoadDispatcher',
		'WP_CLI\Bootstrap\DeclareMainClass',
		'WP_CLI\Bootstrap\DeclareAbstractBaseCommand',
		'WP_CLI\Bootstrap\IncludeFrameworkAutoloader',
		'WP_CLI\Bootstrap\ConfigureRunner',
		'WP_CLI\Bootstrap\InitializeColorization',
		'WP_CLI\Bootstrap\InitializeLogger',
		'WP_CLI\Bootstrap\DefineProtectedCommands',
		'WP_CLI\Bootstrap\LoadExecCommand',
		'WP_CLI\Bootstrap\LoadRequiredCommand',
		'WP_CLI\Bootstrap\IncludePackageAutoloader',
		'WP_CLI\Bootstrap\IncludeFallbackAutoloader',
		'WP_CLI\Bootstrap\RegisterFrameworkCommands',
		'WP_CLI\Bootstrap\RegisterDeferredCommands',
		'WP_CLI\Bootstrap\InitializeContexts',
		'WP_CLI\Bootstrap\LaunchRunner',
	];
}

/**
 * Register the classes needed for the bootstrap process.
 *
 * The Composer autoloader is not active yet at this point, so we need to use a
 * custom autoloader to fetch the bootstrap classes in a flexible way.
 */
function prepare_bootstrap() {
	require_once WP_CLI_ROOT . '/php/WP_CLI/Autoloader.php';

$autoloader = new Autoloader();

$autoloader->add_namespace(
		'WP_CLI\Bootstrap',
		WP_CLI_ROOT . '/php/WP_CLI/Bootstrap'
	)->register();
}

/**
 * Initialize and return the bootstrap state to pass from step to step.
 *
 * @return BootstrapState
 */
function initialize_bootstrap_state() {
	return new BootstrapState();
}

/**
 * Process the bootstrapping steps.
 *
 * Loops over each of the provided steps, instantiates it and then calls its
 * `process()` method.
 */
function bootstrap() {
	prepare_bootstrap();
	$state = initialize_bootstrap_state();

foreach ( get_bootstrap_steps() as $step ) {
		/** @var BootstrapStep $step_instance */
		$step_instance = new $step();
		$state         = $step_instance->process( $state );
	}
}
<?php

return [
	'path'              => [
		'runtime' => '=<path>',
		'file'    => '<path>',
		'desc'    => 'Path to the WordPress files.',
	],

'url'               => [
		'runtime' => '=<url>',
		'file'    => '<url>',
		'desc'    => 'Pretend request came from given URL. In multisite, this argument is how the target site is specified.',
	],

'ssh'               => [
		'runtime' => '=[<scheme>:][<user>@]<host|container>[:<port>][<path>]',
		'file'    => '[<scheme>:][<user>@]<host|container>[:<port>][<path>]',
		'desc'    => 'Perform operation against a remote server over SSH (or a container using scheme of "docker", "docker-compose", "vagrant").',
	],

'http'              => [
		'runtime' => '=<http>',
		'file'    => '<http>',
		'desc'    => 'Perform operation against a remote WordPress installation over HTTP.',
	],

'blog'              => [
		'deprecated' => 'Use --url instead.',
		'runtime'    => '=<url>',
	],

'user'              => [
		'runtime' => '=<id|login|email>',
		'file'    => '<id|login|email>',
		'desc'    => 'Set the WordPress user.',
	],

'skip-plugins'      => [
		'runtime' => '[=<plugins>]',
		'file'    => '<list>',
		'desc'    => 'Skip loading all plugins, or a comma-separated list of plugins. Note: mu-plugins are still loaded.',
		'default' => '',
	],

'skip-themes'       => [
		'runtime' => '[=<themes>]',
		'file'    => '<list>',
		'desc'    => 'Skip loading all themes, or a comma-separated list of themes.',
		'default' => '',
	],

'skip-packages'     => [
		'runtime' => '',
		'file'    => '<bool>',
		'desc'    => 'Skip loading all installed packages.',
		'default' => false,
	],

'require'           => [
		'runtime'  => '=<path>',
		'file'     => '<path>',
		'desc'     => 'Load PHP file before running the command (may be used more than once).',
		'multiple' => true,
		'default'  => [],
	],

'exec'              => [
		'runtime'  => '=<php-code>',
		'file'     => '<php-code>',
		'desc'     => 'Execute PHP code before running the command (may be used more than once).',
		'multiple' => true,
		'default'  => [],
	],

'context'           => [
		'runtime' => '=<context>',
		'file'    => '<context>',
		'default' => 'cli',
		'desc'    => 'Load WordPress in a given context.',
	],

'disabled_commands' => [
		'file'    => '<list>',
		'default' => [],
		'desc'    => '(Sub)commands to disable.',
	],

'color'             => [
		'runtime' => true,
		'file'    => '<bool>',
		'default' => 'auto',
		'desc'    => 'Whether to colorize the output.',
	],

'debug'             => [
		'runtime' => '[=<group>]',
		'file'    => '<group>',
		'default' => false,
		'desc'    => 'Show all PHP errors and add verbosity to WP-CLI output. Built-in groups include: bootstrap, commandfactory, and help.',
	],

'prompt'            => [
		'runtime' => '[=<assoc>]',
		'file'    => false,
		'default' => false,
		'desc'    => 'Prompt the user to enter values for all command arguments, or a subset specified as comma-separated values.',
	],

'quiet'             => [
		'runtime' => '',
		'file'    => '<bool>',
		'default' => false,
		'desc'    => 'Suppress informational messages.',
	],

'apache_modules'    => [
		'file'     => '<list>',
		'desc'     => 'List of Apache Modules that are to be reported as loaded.',
		'multiple' => true,
		'default'  => [],
	],

# --allow-root => (NOT RECOMMENDED) Allow wp-cli to run as root. This poses
	# a security risk, so you probably do not want to do this.
	'allow-root'        => [
		'file'    => false, # Explicit. Just in case the default changes.
		'runtime' => '',
		'hidden'  => true,
	],

];
<?php

/**
 * Base class for WP-CLI commands
 *
 * @package wp-cli
 */
abstract class WP_CLI_Command {

public function __construct() {}
}

<?php

namespace WP_CLI\Dispatcher;

/**
 * Get the path to a command, e.g. "core download"
 *
 * @param Subcommand|CompositeCommand $command
 * @return string[]
 */
function get_path( $command ) {
	$path = [];

do {
		array_unshift( $path, $command->get_name() );
	} while ( $command = $command->get_parent() );

return $path;
}

<?php

// This file needs to parse without error in PHP < 5.3

if ( 'cli' !== PHP_SAPI ) {
	echo "Only CLI access.\n";
	die( -1 );
}

if ( version_compare( PHP_VERSION, '5.6.0', '<' ) ) {
	printf( "Error: WP-CLI requires PHP %s or newer. You are running version %s.\n", '5.6.0', PHP_VERSION );
	die( -1 );
}

define( 'WP_CLI_ROOT', dirname( __DIR__ ) );

require_once WP_CLI_ROOT . '/php/wp-cli.php';

<?php

/**
 * Manages the internal WP-CLI cache,.
 *
 * ## EXAMPLES
 *
 *     # Remove all cached files.
 *     $ wp cli cache clear
 *     Success: Cache cleared.
 *
 *     # Remove all cached files except for the newest version of each one.
 *     $ wp cli cache prune
 *     Success: Cache pruned.
 *
 * @when before_wp_load
 */
class CLI_Cache_Command extends WP_CLI_Command {

/**
	 * Clears the internal cache.
	 *
	 * ## EXAMPLES
	 *
	 *     $ wp cli cache clear
	 *     Success: Cache cleared.
	 *
	 * @subcommand clear
	 */
	public function cache_clear() {
		$cache = WP_CLI::get_cache();

if ( ! $cache->is_enabled() ) {
			WP_CLI::error( 'Cache directory does not exist.' );
		}

$cache->clear();

WP_CLI::success( 'Cache cleared.' );
	}

/**
	 * Prunes the internal cache.
	 *
	 * Removes all cached files except for the newest version of each one.
	 *
	 * ## EXAMPLES
	 *
	 *     $ wp cli cache prune
	 *     Success: Cache pruned.
	 *
	 * @subcommand prune
	 */
	public function cache_prune() {
		$cache = WP_CLI::get_cache();

if ( ! $cache->is_enabled() ) {
			WP_CLI::error( 'Cache directory does not exist.' );
		}

$cache->prune();

WP_CLI::success( 'Cache pruned.' );
	}
}
<?php

/**
 * Retrieves, sets and updates aliases for WordPress Installations.
 */

use Mustangostang\Spyc;
use WP_CLI\ExitException;
use WP_CLI\Utils;

/**
 * Retrieves, sets and updates aliases for WordPress Installations.
 *
 * Aliases are shorthand references to WordPress installs. For instance,
 * `@dev` could refer to a development install and `@prod` could refer to a production install.
 * This command gives you and option to add, update and delete, the registered aliases you have available.
 *
 * ## EXAMPLES
 *
 *     # List alias information.
 *     $ wp cli alias list
 *     list
 *     ---
 *     @all: Run command against every registered alias.
 *     @local:
 *       user: wpcli
 *       path: /Users/wpcli/sites/testsite
 *
 *     # Get alias information.
 *     $ wp cli alias get @dev
 *     ssh: dev@somedeve.env:12345/home/dev/
 *
 *     # Add alias.
 *     $ wp cli alias add @prod --set-ssh=login@host --set-path=/path/to/wordpress/install/ --set-user=wpcli
 *     Success: Added '@prod' alias.
 *
 *     # Update alias.
 *     $ wp cli alias update @prod --set-user=newuser --set-path=/new/path/to/wordpress/install/
 *     Success: Updated 'prod' alias.
 *
 *     # Delete alias.
 *     $ wp cli alias delete @prod
 *     Success: Deleted '@prod' alias.
 *
 * @package wp-cli
 * @when    before_wp_load
 */
class CLI_Alias_Command extends WP_CLI_Command {

/**
	 * Lists available WP-CLI aliases.
	 *
	 * ## OPTIONS
	 *
	 * [--format=<format>]
	 * : Render output in a particular format.
	 * ---
	 * default: yaml
	 * options:
	 *   - yaml
	 *   - json
	 *   - var_export
	 * ---
	 *
	 * ## EXAMPLES
	 *
	 *     # List all available aliases.
	 *     $ wp cli alias list
	 *     ---
	 *     @all: Run command against every registered alias.
	 *     @prod:
	 *       ssh: runcommand@runcommand.io~/webapps/production
	 *     @dev:
	 *       ssh: vagrant@192.168.50.10/srv/www/runcommand.dev
	 *     @both:
	 *       - @prod
	 *       - @dev
	 *
	 * @subcommand list
	 */
	public function list_( $args, $assoc_args ) {
		WP_CLI::print_value( WP_CLI::get_runner()->aliases, $assoc_args );
	}

/**
	 * Gets the value for an alias.
	 *
	 * ## OPTIONS
	 *
	 * <key>
	 * : Key for the alias.
	 *
	 * ## EXAMPLES
	 *
	 *     # Get alias.
	 *     $ wp cli alias get @prod
	 *     ssh: dev@somedeve.env:12345/home/dev/
	 */
	public function get( $args, $assoc_args ) {
		list( $alias ) = $args;

$aliases = WP_CLI::get_runner()->aliases;

if ( empty( $aliases[ $alias ] ) ) {
			WP_CLI::error( "No alias found with key '{$alias}'." );
		}

foreach ( $aliases[ $alias ] as $key => $value ) {
			WP_CLI::log( "{$key}: {$value}" );
		}
	}

/**
	 * Creates an alias.
	 *
	 * ## OPTIONS
	 *
	 * <key>
	 * : Key for the alias.
	 *
	 * [--set-user=<user>]
	 * : Set user for alias.
	 *
	 * [--set-url=<url>]
	 * : Set url for alias.
	 *
	 * [--set-path=<path>]
	 * : Set path for alias.
	 *
	 * [--set-ssh=<ssh>]
	 * : Set ssh for alias.
	 *
	 * [--set-http=<http>]
	 * : Set http for alias.
	 *
	 * [--grouping=<grouping>]
	 * : For grouping multiple aliases.
	 *
	 * [--config=<config>]
	 * : Config file to be considered for operations.
	 * ---
	 * default: global
	 * options:
	 *   - global
	 *   - project
	 * ---
	 *
	 * ## EXAMPLES
	 *
	 *     # Add alias to global config.
	 *     $ wp cli alias add @prod  --set-ssh=login@host --set-path=/path/to/wordpress/install/ --set-user=wpcli
	 *     Success: Added '@prod' alias.
	 *
	 *     # Add alias to project config.
	 *     $ wp cli alias add @prod --set-ssh=login@host --set-path=/path/to/wordpress/install/ --set-user=wpcli --config=project
	 *     Success: Added '@prod' alias.
	 *
	 *     # Add group of aliases.
	 *     $ wp cli alias add @multiservers --grouping=servera,serverb
	 *     Success: Added '@multiservers' alias.
	 */
	public function add( $args, $assoc_args ) {

$config = ( ! empty( $assoc_args['config'] ) ? $assoc_args['config'] : 'global' );

list( $config_path, $aliases ) = $this->get_aliases_data( $config, '', true );

$this->validate_config_file( $config_path );

$alias    = $args[0];
		$grouping = Utils\get_flag_value( $assoc_args, 'grouping' );

$this->validate_input( $assoc_args, $grouping );

if ( isset( $aliases[ $alias ] ) ) {
			WP_CLI::error( "Key '{$alias}' exists already." );
		}

if ( null === $grouping ) {
			$aliases = $this->build_aliases( $aliases, $alias, $assoc_args, false );
		} else {
			$aliases = $this->build_aliases( $aliases, $alias, $assoc_args, true, $grouping );
		}

$this->process_aliases( $aliases, $alias, $config_path, 'Added' );
	}

/**
	 * Deletes an alias.
	 *
	 * ## OPTIONS
	 *
	 * <key>
	 * : Key for the alias.
	 *
	 * [--config=<config>]
	 * : Config file to be considered for operations.
	 * ---
	 * options:
	 *   - global
	 *   - project
	 * ---
	 *
	 * ## EXAMPLES
	 *
	 *     # Delete alias.
	 *     $ wp cli alias delete @prod
	 *     Success: Deleted '@prod' alias.
	 *
	 *     # Delete project alias.
	 *     $ wp cli alias delete @prod --config=project
	 *     Success: Deleted '@prod' alias.
	 */
	public function delete( $args, $assoc_args ) {

list( $alias ) = $args;

$config = ( ! empty( $assoc_args['config'] ) ? $assoc_args['config'] : '' );

list( $config_path, $aliases ) = $this->get_aliases_data( $config, $alias );

$this->validate_config_file( $config_path );

if ( empty( $aliases[ $alias ] ) ) {
			WP_CLI::error( "No alias found with key '{$alias}'." );
		}

unset( $aliases[ $alias ] );
		$this->process_aliases( $aliases, $alias, $config_path, 'Deleted' );

}

/**
	 * Updates an alias.
	 *
	 * ## OPTIONS
	 *
	 * <key>
	 * : Key for the alias.
	 *
	 * [--set-user=<user>]
	 * : Set user for alias.
	 *
	 * [--set-url=<url>]
	 * : Set url for alias.
	 *
	 * [--set-path=<path>]
	 * : Set path for alias.
	 *
	 * [--set-ssh=<ssh>]
	 * : Set ssh for alias.
	 *
	 * [--set-http=<http>]
	 * : Set http for alias.
	 *
	 * [--grouping=<grouping>]
	 * : For grouping multiple aliases.
	 *
	 * [--config=<config>]
	 * : Config file to be considered for operations.
	 * ---
	 * options:
	 *   - global
	 *   - project
	 * ---
	 *
	 * ## EXAMPLES
	 *
	 *     # Update alias.
	 *     $ wp cli alias update @prod --set-user=newuser --set-path=/new/path/to/wordpress/install/
	 *     Success: Updated 'prod' alias.
	 *
	 *     # Update project alias.
	 *     $ wp cli alias update @prod --set-user=newuser --set-path=/new/path/to/wordpress/install/ --config=project
	 *     Success: Updated 'prod' alias.
	 */
	public function update( $args, $assoc_args ) {

$config   = ( ! empty( $assoc_args['config'] ) ? $assoc_args['config'] : '' );
		$alias    = $args[0];
		$grouping = Utils\get_flag_value( $assoc_args, 'grouping' );

list( $config_path, $aliases ) = $this->get_aliases_data( $config, $alias, true );

$this->validate_config_file( $config_path );

$this->validate_input( $assoc_args, $grouping );

if ( empty( $aliases[ $alias ] ) ) {
			WP_CLI::error( "No alias found with key '{$alias}'." );
		}

if ( null === $grouping ) {
			$aliases = $this->build_aliases( $aliases, $alias, $assoc_args, false, '', true );
		} else {
			$aliases = $this->build_aliases( $aliases, $alias, $assoc_args, true, $grouping, true );
		}

$this->process_aliases( $aliases, $alias, $config_path, 'Updated' );
	}

/**
	 * Get config path and aliases data based on config type.
	 *
	 * @param string $config             Type of config to get data from.
	 * @param string $alias              Alias to be used for Add/Update/Delete.
	 * @param bool   $create_config_file Optional. If a config file doesn't exist,
	 *                                   should it be created? Defaults to false.
	 *
	 * @return array Config Path and Aliases in it.
	 * @throws ExitException
	 */
	private function get_aliases_data( $config, $alias, $create_config_file = false ) {

$global_config_path = WP_CLI::get_runner()->get_global_config_path( $create_config_file );
		$global_aliases     = Spyc::YAMLLoad( $global_config_path );

$project_config_path = WP_CLI::get_runner()->get_project_config_path();
		$project_aliases     = Spyc::YAMLLoad( $project_config_path );

if ( 'global' === $config ) {
			$config_path = $global_config_path;
			$aliases     = $global_aliases;
		} elseif ( 'project' === $config ) {
			$config_path = $project_config_path;
			$aliases     = $project_aliases;
		} else {

$is_global_alias  = array_key_exists( $alias, $global_aliases );
			$is_project_alias = array_key_exists( $alias, $project_aliases );

if ( $is_global_alias && $is_project_alias ) {
				WP_CLI::error( "Key '{$alias}' found in more than one path. Please pass --config param." );
			} elseif ( $is_global_alias ) {
				$config_path = $global_config_path;
				$aliases     = $global_aliases;
			} else {
				$config_path = $project_config_path;
				$aliases     = $project_aliases;
			}
		}

return [ $config_path, $aliases ];

}

/**
	 * Check if the config file exists and is writable.
	 *
	 * @param string $config_path Path to config file.
	 *
	 * @return void
	 */
	private function validate_config_file( $config_path ) {
		if ( ! file_exists( $config_path ) || ! is_writable( $config_path ) ) {
			WP_CLI::error( "Config file does not exist: {$config_path}" );
		}
	}

/**
	 * Return aliases array.
	 *
	 * @param array  $aliases     Current aliases data.
	 * @param string $alias       Name of alias.
	 * @param array  $assoc_args  Associative arguments.
	 * @param bool   $is_grouping Check if its a grouping operation.
	 * @param string $grouping    Grouping value.
	 * @param bool   $is_update   Is this an update operation?
	 *
	 * @return mixed
	 */
	private function build_aliases( $aliases, $alias, $assoc_args, $is_grouping, $grouping = '', $is_update = false ) {

if ( $is_grouping ) {
			$valid_assoc_args = [ 'config', 'grouping' ];
			$invalid_args     = array_diff( array_keys( $assoc_args ), $valid_assoc_args );

// Check for invalid args.
			if ( ! empty( $invalid_args ) ) {
				$args_info = implode( ',', $invalid_args );
				WP_CLI::error( "--grouping argument works alone. Found invalid arg(s) '$args_info'." );
			}
		}

if ( $is_update ) {
			$this->validate_alias_type( $aliases, $alias, $assoc_args, $grouping );
		}

if ( ! $is_grouping ) {
			foreach ( $assoc_args as $key => $value ) {
				if ( strpos( $key, 'set-' ) !== false ) {
					$alias_key_info = explode( '-', $key );
					$alias_key      = empty( $alias_key_info[1] ) ? '' : $alias_key_info[1];
					if ( ! empty( $alias_key ) && ! empty( $value ) ) {
						$aliases[ $alias ][ $alias_key ] = $value;
					}
				}
			}
		} else {

if ( ! empty( $grouping ) ) {
				$group_alias_list  = explode( ',', $grouping );
				$group_alias       = array_map(
					function ( $current_alias ) {
						return '@' . ltrim( $current_alias, '@' );
					},
					$group_alias_list
				);
				$aliases[ $alias ] = $group_alias;
			}
		}

return $aliases;
	}

/**
	 * Validate input of passed arguments.
	 *
	 * @param array  $assoc_args Arguments array.
	 * @param string $grouping   Grouping argument value.
	 *
	 * @throws ExitException
	 */
	private function validate_input( $assoc_args, $grouping ) {
		// Check if valid arguments were passed.
		$arg_match = preg_grep( '/^set-(\w+)/i', array_keys( $assoc_args ) );

// Verify passed-arguments.
		if ( empty( $grouping ) && empty( $arg_match ) ) {
			WP_CLI::error( 'No valid arguments passed.' );
		}

// Check whether passed arguments contain value or not.
		$assoc_arg_values = array_filter( array_intersect_key( $assoc_args, array_flip( $arg_match ) ) );

if ( empty( $grouping ) && empty( $assoc_arg_values ) ) {
			WP_CLI::error( 'No value passed to arguments.' );
		}
	}

/**
	 * Validate alias type before update.
	 *
	 * @param array  $aliases    Existing aliases data.
	 * @param string $alias      Alias Name.
	 * @param array  $assoc_args Arguments array.
	 * @param string $grouping   Grouping argument value.
	 *
	 * @throws ExitException
	 */
	private function validate_alias_type( $aliases, $alias, $assoc_args, $grouping ) {

$alias_data = $aliases[ $alias ];

$group_aliases_match = preg_grep( '/^@(\w+)/i', $alias_data );
		$arg_match           = preg_grep( '/^set-(\w+)/i', array_keys( $assoc_args ) );

if ( ! empty( $group_aliases_match ) && ! empty( $arg_match ) ) {
			WP_CLI::error( 'Trying to update group alias with invalid arguments.' );
		} elseif ( empty( $group_aliases_match ) && ! empty( $grouping ) ) {
			WP_CLI::error( 'Trying to update simple alias with invalid --grouping argument.' );
		}
	}

/**
	 * Save aliases data to config file.
	 *
	 * @param array  $aliases     Current aliases data.
	 * @param string $alias       Name of alias.
	 * @param string $config_path Path to config file.
	 * @param string $operation   Current operation string fro message.
	 */
	private function process_aliases( $aliases, $alias, $config_path, $operation = '' ) {
		// Convert data to YAML string.
		$yaml_data = Spyc::YAMLDump( $aliases );

// Add data in config file.
		if ( file_put_contents( $config_path, $yaml_data ) ) {
			WP_CLI::success( "$operation '{$alias}' alias." );
		}
	}
}
<?php

use Composer\Semver\Comparator;
use WP_CLI\Completions;
use WP_CLI\Formatter;
use WP_CLI\Process;
use WP_CLI\Utils;

/**
 * Reviews current WP-CLI info, checks for updates, or views defined aliases.
 *
 * ## EXAMPLES
 *
 *     # Display the version currently installed.
 *     $ wp cli version
 *     WP-CLI 0.24.1
 *
 *     # Check for updates to WP-CLI.
 *     $ wp cli check-update
 *     Success: WP-CLI is at the latest version.
 *
 *     # Update WP-CLI to the latest stable release.
 *     $ wp cli update
 *     You have version 0.24.0. Would you like to update to 0.24.1? [y/n] y
 *     Downloading from https://github.com/wp-cli/wp-cli/releases/download/v0.24.1/wp-cli-0.24.1.phar...
 *     New version works. Proceeding to replace.
 *     Success: Updated WP-CLI to 0.24.1.
 *
 *     # Clear the internal WP-CLI cache.
 *     $ wp cli cache clear
 *     Success: Cache cleared.
 *
 * @when before_wp_load
 */
class CLI_Command extends WP_CLI_Command {

private function command_to_array( $command ) {
		$dump = [
			'name'        => $command->get_name(),
			'description' => $command->get_shortdesc(),
			'longdesc'    => $command->get_longdesc(),
		];

foreach ( $command->get_subcommands() as $subcommand ) {
			$dump['subcommands'][] = $this->command_to_array( $subcommand );
		}

if ( empty( $dump['subcommands'] ) ) {
			$dump['synopsis'] = (string) $command->get_synopsis();
		}

return $dump;
	}

/**
	 * Prints WP-CLI version.
	 *
	 * ## EXAMPLES
	 *
	 *     # Display CLI version.
	 *     $ wp cli version
	 *     WP-CLI 0.24.1
	 */
	public function version() {
		WP_CLI::line( 'WP-CLI ' . WP_CLI_VERSION );
	}

/**
	 * Prints various details about the WP-CLI environment.
	 *
	 * Helpful for diagnostic purposes, this command shares:
	 *
	 * * OS information.
	 * * Shell information.
	 * * PHP binary used.
	 * * PHP binary version.
	 * * php.ini configuration file used (which is typically different than web).
	 * * WP-CLI root dir: where WP-CLI is installed (if non-Phar install).
	 * * WP-CLI global config: where the global config YAML file is located.
	 * * WP-CLI project config: where the project config YAML file is located.
	 * * WP-CLI version: currently installed version.
	 *
	 * See [config docs](https://wp-cli.org/config/) for more details on global
	 * and project config YAML files.
	 *
	 * ## OPTIONS
	 *
	 * [--format=<format>]
	 * : Render output in a particular format.
	 * ---
	 * default: list
	 * options:
	 *   - list
	 *   - json
	 * ---
	 *
	 * ## EXAMPLES
	 *
	 *     # Display various data about the CLI environment.
	 *     $ wp cli info
	 *     OS:  Linux 4.10.0-42-generic #46~16.04.1-Ubuntu SMP Mon Dec 4 15:57:59 UTC 2017 x86_64
	 *     Shell:   /usr/bin/zsh
	 *     PHP binary:  /usr/bin/php
	 *     PHP version: 7.1.12-1+ubuntu16.04.1+deb.sury.org+1
	 *     php.ini used:    /etc/php/7.1/cli/php.ini
	 *     WP-CLI root dir:    phar://wp-cli.phar
	 *     WP-CLI packages dir:    /home/person/.wp-cli/packages/
	 *     WP-CLI global config:
	 *     WP-CLI project config:
	 *     WP-CLI version: 1.5.0
	 */
	public function info( $_, $assoc_args ) {
		// php_uname() $mode argument was only added with PHP 7.0+. Fall back to
		// entire string for older versions.
		$system_os = PHP_MAJOR_VERSION < 7
			? php_uname()
			: sprintf(
				'%s %s %s %s',
				php_uname( 's' ),
				php_uname( 'r' ),
				php_uname( 'v' ),
				php_uname( 'm' )
			);

$shell = getenv( 'SHELL' );
		if ( ! $shell && Utils\is_windows() ) {
			$shell = getenv( 'ComSpec' );
		}

$php_bin = Utils\get_php_binary();

$runner = WP_CLI::get_runner();

$packages_dir = $runner->get_packages_dir_path();
		if ( ! is_dir( $packages_dir ) ) {
			$packages_dir = null;
		}

if ( Utils\get_flag_value( $assoc_args, 'format' ) === 'json' ) {
			$info = [
				'system_os'                => $system_os,
				'shell'                    => $shell,
				'php_binary_path'          => $php_bin,
				'php_version'              => PHP_VERSION,
				'php_ini_used'             => get_cfg_var( 'cfg_file_path' ),
				'mysql_binary_path'        => Utils\get_mysql_binary_path(),
				'mysql_version'            => Utils\get_mysql_version(),
				'sql_modes'                => Utils\get_sql_modes(),
				'wp_cli_dir_path'          => WP_CLI_ROOT,
				'wp_cli_vendor_path'       => WP_CLI_VENDOR_DIR,
				'wp_cli_phar_path'         => defined( 'WP_CLI_PHAR_PATH' ) ? WP_CLI_PHAR_PATH : '',
				'wp_cli_packages_dir_path' => $packages_dir,
				'global_config_path'       => $runner->global_config_path,
				'project_config_path'      => $runner->project_config_path,
				'wp_cli_version'           => WP_CLI_VERSION,
			];

WP_CLI::line( json_encode( $info ) );
		} else {
			WP_CLI::line( "OS:\t" . $system_os );
			WP_CLI::line( "Shell:\t" . $shell );
			WP_CLI::line( "PHP binary:\t" . $php_bin );
			WP_CLI::line( "PHP version:\t" . PHP_VERSION );
			WP_CLI::line( "php.ini used:\t" . get_cfg_var( 'cfg_file_path' ) );
			WP_CLI::line( "MySQL binary:\t" . Utils\get_mysql_binary_path() );
			WP_CLI::line( "MySQL version:\t" . Utils\get_mysql_version() );
			WP_CLI::line( "SQL modes:\t" . implode( ',', Utils\get_sql_modes() ) );
			WP_CLI::line( "WP-CLI root dir:\t" . WP_CLI_ROOT );
			WP_CLI::line( "WP-CLI vendor dir:\t" . WP_CLI_VENDOR_DIR );
			WP_CLI::line( "WP_CLI phar path:\t" . ( defined( 'WP_CLI_PHAR_PATH' ) ? WP_CLI_PHAR_PATH : '' ) );
			WP_CLI::line( "WP-CLI packages dir:\t" . $packages_dir );
			WP_CLI::line( "WP-CLI global config:\t" . $runner->global_config_path );
			WP_CLI::line( "WP-CLI project config:\t" . $runner->project_config_path );
			WP_CLI::line( "WP-CLI version:\t" . WP_CLI_VERSION );
		}
	}

/**
	 * Checks to see if there is a newer version of WP-CLI available.
	 *
	 * Queries the Github releases API. Returns available versions if there are
	 * updates available, or success message if using the latest release.
	 *
	 * ## OPTIONS
	 *
	 * [--patch]
	 * : Only list patch updates.
	 *
	 * [--minor]
	 * : Only list minor updates.
	 *
	 * [--major]
	 * : Only list major updates.
	 *
	 * [--field=<field>]
	 * : Prints the value of a single field for each update.
	 *
	 * [--fields=<fields>]
	 * : Limit the output to specific object fields. Defaults to version,update_type,package_url.
	 *
	 * [--format=<format>]
	 * : Render output in a particular format.
	 * ---
	 * default: table
	 * options:
	 *   - table
	 *   - csv
	 *   - json
	 *   - count
	 *   - yaml
	 * ---
	 *
	 * ## EXAMPLES
	 *
	 *     # Check for update.
	 *     $ wp cli check-update
	 *     Success: WP-CLI is at the latest version.
	 *
	 *     # Check for update and new version is available.
	 *     $ wp cli check-update
	 *     +---------+-------------+-------------------------------------------------------------------------------+
	 *     | version | update_type | package_url                                                                   |
	 *     +---------+-------------+-------------------------------------------------------------------------------+
	 *     | 0.24.1  | patch       | https://github.com/wp-cli/wp-cli/releases/download/v0.24.1/wp-cli-0.24.1.phar |
	 *     +---------+-------------+-------------------------------------------------------------------------------+
	 *
	 * @subcommand check-update
	 */
	public function check_update( $_, $assoc_args ) {
		$updates = $this->get_updates( $assoc_args );

if ( $updates ) {
			$formatter = new Formatter(
				$assoc_args,
				[ 'version', 'update_type', 'package_url' ]
			);
			$formatter->display_items( $updates );
		} elseif ( empty( $assoc_args['format'] ) || 'table' === $assoc_args['format'] ) {
			$update_type = $this->get_update_type_str( $assoc_args );
			WP_CLI::success( "WP-CLI is at the latest{$update_type}version." );
		}
	}

/**
	 * Updates WP-CLI to the latest release.
	 *
	 * Default behavior is to check the releases API for the newest stable
	 * version, and prompt if one is available.
	 *
	 * Use `--stable` to install or reinstall the latest stable version.
	 *
	 * Use `--nightly` to install the latest built version of the master branch.
	 * While not recommended for production, nightly contains the latest and
	 * greatest, and should be stable enough for development and staging
	 * environments.
	 *
	 * Only works for the Phar installation mechanism.
	 *
	 * ## OPTIONS
	 *
	 * [--patch]
	 * : Only perform patch updates.
	 *
	 * [--minor]
	 * : Only perform minor updates.
	 *
	 * [--major]
	 * : Only perform major updates.
	 *
	 * [--stable]
	 * : Update to the latest stable release. Skips update check.
	 *
	 * [--nightly]
	 * : Update to the latest built version of the master branch. Potentially unstable.
	 *
	 * [--yes]
	 * : Do not prompt for confirmation.
	 *
	 * [--insecure]
	 * : Retry without certificate validation if TLS handshake fails. Note: This makes the request vulnerable to a MITM attack.
	 *
	 * ## EXAMPLES
	 *
	 *     # Update CLI.
	 *     $ wp cli update
	 *     You have version 0.24.0. Would you like to update to 0.24.1? [y/n] y
	 *     Downloading from https://github.com/wp-cli/wp-cli/releases/download/v0.24.1/wp-cli-0.24.1.phar...
	 *     New version works. Proceeding to replace.
	 *     Success: Updated WP-CLI to 0.24.1.
	 */
	public function update( $_, $assoc_args ) {
		if ( ! Utils\inside_phar() ) {
			WP_CLI::error( 'You can only self-update Phar files.' );
		}

$old_phar = realpath( $_SERVER['argv'][0] );

if ( ! is_writable( $old_phar ) ) {
			WP_CLI::error( sprintf( '%s is not writable by current user.', $old_phar ) );
		} elseif ( ! is_writable( dirname( $old_phar ) ) ) {
			WP_CLI::error( sprintf( '%s is not writable by current user.', dirname( $old_phar ) ) );
		}

if ( Utils\get_flag_value( $assoc_args, 'nightly' ) ) {
			WP_CLI::confirm( sprintf( 'You have version %s. Would you like to update to the latest nightly?', WP_CLI_VERSION ), $assoc_args );
			$download_url = 'https://raw.githubusercontent.com/wp-cli/builds/gh-pages/phar/wp-cli-nightly.phar';
			$md5_url      = 'https://raw.githubusercontent.com/wp-cli/builds/gh-pages/phar/wp-cli-nightly.phar.md5';
		} elseif ( Utils\get_flag_value( $assoc_args, 'stable' ) ) {
			WP_CLI::confirm( sprintf( 'You have version %s. Would you like to update to the latest stable release?', WP_CLI_VERSION ), $assoc_args );
			$download_url = 'https://raw.githubusercontent.com/wp-cli/builds/gh-pages/phar/wp-cli.phar';
			$md5_url      = 'https://raw.githubusercontent.com/wp-cli/builds/gh-pages/phar/wp-cli.phar.md5';
		} else {

$updates = $this->get_updates( $assoc_args );

if ( empty( $updates ) ) {
				$update_type = $this->get_update_type_str( $assoc_args );
				WP_CLI::success( "WP-CLI is at the latest{$update_type}version." );
				return;
			}

$newest = $updates[0];

WP_CLI::confirm( sprintf( 'You have version %s. Would you like to update to %s?', WP_CLI_VERSION, $newest['version'] ), $assoc_args );

$download_url = $newest['package_url'];
			$md5_url      = str_replace( '.phar', '.phar.md5', $download_url );
		}

WP_CLI::log( sprintf( 'Downloading from %s...', $download_url ) );

$temp = Utils\get_temp_dir() . uniqid( 'wp_', true ) . '.phar';

$headers = [];
		$options = [
			'timeout'  => 600,  // 10 minutes ought to be enough for everybody.
			'filename' => $temp,
			'insecure' => (bool) Utils\get_flag_value( $assoc_args, 'insecure', false ),
		];

Utils\http_request( 'GET', $download_url, null, $headers, $options );

unset( $options['filename'] );
		$md5_response = Utils\http_request( 'GET', $md5_url, null, $headers, $options );
		if ( '20' !== substr( $md5_response->status_code, 0, 2 ) ) {
			WP_CLI::error( "Couldn't access md5 hash for release (HTTP code {$md5_response->status_code})." );
		}
		$md5_file     = md5_file( $temp );
		$release_hash = trim( $md5_response->body );
		if ( $md5_file === $release_hash ) {
			WP_CLI::log( 'md5 hash verified: ' . $release_hash );
		} else {
			WP_CLI::error( "md5 hash for download ({$md5_file}) is different than the release hash ({$release_hash})." );
		}

$allow_root = WP_CLI::get_runner()->config['allow-root'] ? '--allow-root' : '';
		$php_binary = Utils\get_php_binary();
		$process    = Process::create( "{$php_binary} $temp --info {$allow_root}" );
		$result     = $process->run();
		if ( 0 !== $result->return_code || false === stripos( $result->stdout, 'WP-CLI version' ) ) {
			$multi_line = explode( PHP_EOL, $result->stderr );
			WP_CLI::error_multi_line( $multi_line );
			WP_CLI::error( 'The downloaded PHAR is broken, try running wp cli update again.' );
		}

WP_CLI::log( 'New version works. Proceeding to replace.' );

$mode = fileperms( $old_phar ) & 511;

if ( false === chmod( $temp, $mode ) ) {
			WP_CLI::error( sprintf( 'Cannot chmod %s.', $temp ) );
		}

class_exists( '\cli\Colors' ); // This autoloads \cli\Colors - after we move the file we no longer have access to this class.

if ( false === rename( $temp, $old_phar ) ) {
			WP_CLI::error( sprintf( 'Cannot move %s to %s', $temp, $old_phar ) );
		}

if ( Utils\get_flag_value( $assoc_args, 'nightly', false ) ) {
			$updated_version = 'the latest nightly release';
		} elseif ( Utils\get_flag_value( $assoc_args, 'stable', false ) ) {
			$updated_version = 'the latest stable release';
		} else {
			$updated_version = isset( $newest['version'] ) ? $newest['version'] : '<not provided>';
		}
		WP_CLI::success( sprintf( 'Updated WP-CLI to %s.', $updated_version ) );
	}

/**
	 * Returns update information.
	 */
	private function get_updates( $assoc_args ) {
		$url = 'https://api.github.com/repos/wp-cli/wp-cli/releases?per_page=100';

$options = [
			'timeout'  => 30,
			'insecure' => (bool) Utils\get_flag_value( $assoc_args, 'insecure', false ),
		];

$headers = [
			'Accept' => 'application/json',
		];

$github_token = getenv( 'GITHUB_TOKEN' );
		if ( false !== $github_token ) {
			$headers['Authorization'] = 'token ' . $github_token;
		}

$response = Utils\http_request( 'GET', $url, null, $headers, $options );

if ( ! $response->success || 200 !== $response->status_code ) {
			WP_CLI::error( sprintf( 'Failed to get latest version (HTTP code %d).', $response->status_code ) );
		}

$release_data = json_decode( $response->body );

$updates = [
			'major' => false,
			'minor' => false,
			'patch' => false,
		];
		foreach ( $release_data as $release ) {

// Get rid of leading "v" if there is one set.
			$release_version = $release->tag_name;
			if ( 'v' === substr( $release_version, 0, 1 ) ) {
				$release_version = ltrim( $release_version, 'v' );
			}

$update_type = Utils\get_named_sem_ver( $release_version, WP_CLI_VERSION );
			if ( ! $update_type ) {
				continue;
			}

if ( ! isset( $release->assets[0]->browser_download_url ) ) {
				continue;
			}

if ( ! empty( $updates[ $update_type ] ) && ! Comparator::greaterThan( $release_version, $updates[ $update_type ]['version'] ) ) {
				continue;
			}

$updates[ $update_type ] = [
				'version'     => $release_version,
				'update_type' => $update_type,
				'package_url' => $release->assets[0]->browser_download_url,
			];
		}

foreach ( $updates as $type => $value ) {
			if ( empty( $value ) ) {
				unset( $updates[ $type ] );
			}
		}

foreach ( [ 'major', 'minor', 'patch' ] as $type ) {
			if ( true === Utils\get_flag_value( $assoc_args, $type ) ) {
				return ! empty( $updates[ $type ] ) ? [ $updates[ $type ] ] : false;
			}
		}

if ( empty( $updates ) && preg_match( '#-alpha-(.+)$#', WP_CLI_VERSION, $matches ) ) {
			$version_url = 'https://raw.githubusercontent.com/wp-cli/builds/gh-pages/phar/NIGHTLY_VERSION';
			$response    = Utils\http_request( 'GET', $version_url, null, [], $options );
			if ( ! $response->success || 200 !== $response->status_code ) {
				WP_CLI::error( sprintf( 'Failed to get current nightly version (HTTP code %d)', $response->status_code ) );
			}
			$nightly_version = trim( $response->body );
			if ( WP_CLI_VERSION !== $nightly_version ) {
				$updates['nightly'] = [
					'version'     => $nightly_version,
					'update_type' => 'nightly',
					'package_url' => 'https://raw.githubusercontent.com/wp-cli/builds/gh-pages/phar/wp-cli-nightly.phar',
				];
			}
		}

return array_values( $updates );
	}

/**
	 * Dumps the list of global parameters, as JSON or in var_export format.
	 *
	 * ## OPTIONS
	 *
	 * [--with-values]
	 * : Display current values also.
	 *
	 * [--format=<format>]
	 * : Render output in a particular format.
	 * ---
	 * default: json
	 * options:
	 *   - var_export
	 *   - json
	 * ---
	 *
	 * ## EXAMPLES
	 *
	 *     # Dump the list of global parameters.
	 *     $ wp cli param-dump --format=var_export
	 *     array (
	 *       'path' =>
	 *       array (
	 *         'runtime' => '=<path>',
	 *         'file' => '<path>',
	 *         'synopsis' => '',
	 *         'default' => NULL,
	 *         'multiple' => false,
	 *         'desc' => 'Path to the WordPress files.',
	 *       ),
	 *       'url' =>
	 *       array (
	 *
	 * @subcommand param-dump
	 */
	public function param_dump( $_, $assoc_args ) {
		$spec = WP_CLI::get_configurator()->get_spec();

if ( Utils\get_flag_value( $assoc_args, 'with-values' ) ) {
			$config = WP_CLI::get_configurator()->to_array();
			// Copy current config values to $spec.
			foreach ( $spec as $key => $value ) {
				$current = null;
				if ( isset( $config[0][ $key ] ) ) {
					$current = $config[0][ $key ];
				}
				$spec[ $key ]['current'] = $current;
			}
		}

if ( 'var_export' === Utils\get_flag_value( $assoc_args, 'format' ) ) {
			var_export( $spec );
		} else {
			echo json_encode( $spec );
		}
	}

/**
	 * Dumps the list of installed commands, as JSON.
	 *
	 * ## EXAMPLES
	 *
	 *     # Dump the list of installed commands.
	 *     $ wp cli cmd-dump
	 *     {"name":"wp","description":"Manage WordPress through the command-line.","longdesc":"\n\n## GLOBAL PARAMETERS\n\n  --path=<path>\n      Path to the WordPress files.\n\n  --ssh=<ssh>\n      Perform operation against a remote server over SSH (or a container using scheme of "docker" or "docker-compose").\n\n  --url=<url>\n      Pretend request came from given URL. In multisite, this argument is how the target site is specified. \n\n  --user=<id|login|email>\n
	 *
	 * @subcommand cmd-dump
	 */
	public function cmd_dump() {
		echo json_encode( $this->command_to_array( WP_CLI::get_root_command() ) );
	}

/**
	 * Generates tab completion strings.
	 *
	 * ## OPTIONS
	 *
	 * --line=<line>
	 * : The current command line to be executed.
	 *
	 * --point=<point>
	 * : The index to the current cursor position relative to the beginning of the command.
	 *
	 * ## EXAMPLES
	 *
	 *     # Generate tab completion strings.
	 *     $ wp cli completions --line='wp eva' --point=100
	 *     eval
	 *     eval-file
	 */
	public function completions( $_, $assoc_args ) {
		$line  = substr( $assoc_args['line'], 0, $assoc_args['point'] );
		$compl = new Completions( $line );
		$compl->render();
	}

/**
	 * Get a string representing the type of update being checked for.
	 */
	private function get_update_type_str( $assoc_args ) {
		$update_type = ' ';
		foreach ( [ 'major', 'minor', 'patch' ] as $type ) {
			if ( true === Utils\get_flag_value( $assoc_args, $type ) ) {
				$update_type = ' ' . $type . ' ';
				break;
			}
		}
		return $update_type;
	}

/**
	 * Detects if a command exists
	 *
	 * This commands checks if a command is registered with WP-CLI.
	 * If the command is found then it returns with exit status 0.
	 * If the command doesn't exist, then it will exit with status 1.
	 *
	 * ## OPTIONS
	 * <command_name>...
	 * : The command
	 *
	 * ## EXAMPLES
	 *
	 *     # The "site delete" command is registered.
	 *     $ wp cli has-command "site delete"
	 *     $ echo $?
	 *     0
	 *
	 *     # The "foo bar" command is not registered.
	 *     $ wp cli has-command "foo bar"
	 *     $ echo $?
	 *     1
	 *
	 * @subcommand has-command
	 *
	 * @when after_wp_load
	 */
	public function has_command( $_, $assoc_args ) {

// If command is input as a string, then explode it into array.
		$command = explode( ' ', implode( ' ', $_ ) );

WP_CLI::halt( is_array( WP_CLI::get_runner()->find_command_to_run( $command ) ) ? 0 : 1 );
	}
}
<?php

use cli\Shell;
use WP_CLI\Dispatcher;
use WP_CLI\Utils;

class Help_Command extends WP_CLI_Command {

/**
	 * Gets help on WP-CLI, or on a specific command.
	 *
	 * ## OPTIONS
	 *
	 * [<command>...]
	 * : Get help on a specific command.
	 *
	 * ## EXAMPLES
	 *
	 *     # get help for `core` command
	 *     wp help core
	 *
	 *     # get help for `core download` subcommand
	 *     wp help core download
	 */
	public function __invoke( $args, $assoc_args ) {
		$r = WP_CLI::get_runner()->find_command_to_run( $args );

if ( is_array( $r ) ) {
			list( $command ) = $r;

self::show_help( $command );
			exit;
		}
	}

private static function show_help( $command ) {
		$out = self::get_initial_markdown( $command );

// Remove subcommands if in columns - will wordwrap separately.
		$subcommands       = '';
		$column_subpattern = '[ \t]+[^\t]+\t+';
		if ( preg_match( '/(^## SUBCOMMANDS[^\n]*\n+' . $column_subpattern . '.+?)(?:^##|\z)/ms', $out, $matches, PREG_OFFSET_CAPTURE ) ) {
			$subcommands        = $matches[1][0];
			$subcommands_header = "## SUBCOMMANDS\n";
			$out                = substr_replace( $out, $subcommands_header, $matches[1][1], strlen( $subcommands ) );
		}

$out .= self::parse_reference_links( $command->get_longdesc() );

// Definition lists.
		$out = preg_replace_callback( '/([^\n]+)\n: (.+?)(\n\n|$)/s', [ __CLASS__, 'rewrap_param_desc' ], $out );

// Ensure lines with no leading whitespace that aren't section headers are indented.
		$out = preg_replace( '/^((?! |\t|##).)/m', "\t$1", $out );

$tab = str_repeat( ' ', 2 );

// Need to de-tab for wordwrapping to work properly.
		$out = str_replace( "\t", $tab, $out );

$wordwrap_width = Shell::columns();

// Wordwrap with indent.
		$out = preg_replace_callback(
			'/^( *)([^\n]+)\n/m',
			function ( $matches ) use ( $wordwrap_width ) {
				return $matches[1] . str_replace( "\n", "\n{$matches[1]}", wordwrap( $matches[2], $wordwrap_width - strlen( $matches[1] ) ) ) . "\n";
			},
			$out
		);

if ( $subcommands ) {
			// Wordwrap with column indent.
			$subcommands = preg_replace_callback(
				'/^(' . $column_subpattern . ')([^\n]+)\n/m',
				function ( $matches ) use ( $wordwrap_width, $tab ) {
					// Need to de-tab for wordwrapping to work properly.
					$matches[1]  = str_replace( "\t", $tab, $matches[1] );
					$matches[2]  = str_replace( "\t", $tab, $matches[2] );
					$padding_len = strlen( $matches[1] );
					$padding     = str_repeat( ' ', $padding_len );
					return $matches[1] . str_replace( "\n", "\n$padding", wordwrap( $matches[2], $wordwrap_width - $padding_len ) ) . "\n";
				},
				$subcommands
			);

// Put subcommands back.
			$out = str_replace( $subcommands_header, $subcommands, $out );
		}

// Section headers.
		$out = preg_replace( '/^## ([A-Z ]+)/m', WP_CLI::colorize( '%9\1%n' ), $out );

self::pass_through_pager( $out );
	}

private static function rewrap_param_desc( $matches ) {
		$param = $matches[1];
		$desc  = self::indent( "\t\t", $matches[2] );
		return "\t$param\n$desc\n\n";
	}

private static function indent( $whitespace, $text ) {
		$lines = explode( "\n", $text );
		foreach ( $lines as &$line ) {
			$line = $whitespace . $line;
		}
		return implode( "\n", $lines );
	}

private static function pass_through_pager( $out ) {

if ( ! Utils\check_proc_available( null /*context*/, true /*return*/ ) ) {
			WP_CLI::line( $out );
			WP_CLI::debug( 'Warning: check_proc_available() failed in pass_through_pager().', 'help' );
			return -1;
		}

$pager = getenv( 'PAGER' );
		if ( false === $pager ) {
			$pager = Utils\is_windows() ? 'more' : 'less -r';
		}

// For Windows 7 need to set code page to something other than Unicode (65001) to get around "Not enough memory." error with `more.com` on PHP 7.1+.
		if ( 'more' === $pager && defined( 'PHP_WINDOWS_VERSION_MAJOR' ) && PHP_WINDOWS_VERSION_MAJOR < 10 && function_exists( 'sapi_windows_cp_set' ) ) {
			// Note will also apply to Windows 8 (see https://msdn.microsoft.com/en-us/library/windows/desktop/ms724832.aspx) but probably harmless anyway.
			$cp = getenv( 'WP_CLI_WINDOWS_CODE_PAGE' ) ?: 1252; // Code page 1252 is the most used so probably the most compat.
			// phpcs:ignore PHPCompatibility.FunctionUse.NewFunctions -- Wrapped in function_exists() call.
			sapi_windows_cp_set( $cp ); // `sapi_windows_cp_set()` introduced PHP 7.1.
		}

// Convert string to file handle.
		$fd = fopen( 'php://temp', 'r+b' );
		fwrite( $fd, $out );
		rewind( $fd );

$descriptorspec = [
			0 => $fd,
			1 => STDOUT,
			2 => STDERR,
		];

return proc_close( Utils\proc_open_compat( $pager, $descriptorspec, $pipes ) );
	}

private static function get_initial_markdown( $command ) {
		$name = implode( ' ', Dispatcher\get_path( $command ) );

$binding = [
			'name'      => $name,
			'shortdesc' => $command->get_shortdesc(),
		];

$binding['synopsis'] = "$name " . $command->get_synopsis();

$alias = $command->get_alias();
		if ( $alias ) {
			$binding['alias'] = $alias;
		}

if ( $command->can_have_subcommands() ) {
			$binding['has-subcommands']['subcommands'] = self::render_subcommands( $command );
		}

return Utils\mustache_render( 'man.mustache', $binding );
	}

private static function render_subcommands( $command ) {
		$subcommands = [];
		foreach ( $command->get_subcommands() as $subcommand ) {

if ( WP_CLI::get_runner()->is_command_disabled( $subcommand ) ) {
				continue;
			}

$subcommands[ $subcommand->get_name() ] = $subcommand->get_shortdesc();
		}

$max_len = self::get_max_len( array_keys( $subcommands ) );

$lines = [];
		foreach ( $subcommands as $name => $desc ) {
			$lines[] = str_pad( $name, $max_len ) . "\t\t\t" . $desc;
		}

return $lines;
	}

private static function get_max_len( $strings ) {
		$max_len = 0;
		foreach ( $strings as $str ) {
			$len = strlen( $str );
			if ( $len > $max_len ) {
				$max_len = $len;
			}
		}

return $max_len;
	}

/**
	 * Parse reference links from longdescription.
	 *
	 * @param  string $longdesc The longdescription from the `$command->get_longdesc()`.
	 * @return string The longdescription which has links as footnote.
	 */
	private static function parse_reference_links( $longdesc ) {
		$description = '';
		foreach ( explode( "\n", $longdesc ) as $line ) {
			if ( 0 === strpos( $line, '#' ) ) {
				break;
			}
			$description .= $line . "\n";
		}

// Fires if it has description text at the head of `$longdesc`.
		if ( $description ) {
			$links   = []; // An array of URLs from the description.
			$pattern = '/\[.+?\]$(https?:\/\/.+?)$/';
			$newdesc = preg_replace_callback(
				$pattern,
				function( $matches ) use ( &$links ) {
					static $count = 0;
					$count++;
					$links[] = $matches[1];
					return str_replace( '(' . $matches[1] . ')', '[' . $count . ']', $matches[0] );
				},
				$description
			);

$footnote   = '';
			$link_count = count( $links );
			for ( $i = 0; $i < $link_count; $i++ ) {
				$n         = $i + 1;
				$footnote .= '[' . $n . '] ' . $links[ $i ] . "\n";
			}

if ( $footnote ) {
				$newdesc  = trim( $newdesc ) . "\n\n---\n" . $footnote;
				$longdesc = str_replace( trim( $description ), trim( $newdesc ), $longdesc );
			}
		}

return $longdesc;
	}
}
<?php

if ( ! class_exists( 'Help_Command' ) ) {
	require_once __DIR__ . '/src/Help_Command.php';
}

WP_CLI::add_command( 'help', 'Help_Command' );
<?php

if ( ! class_exists( 'CLI_Command' ) ) {
	require_once __DIR__ . '/src/CLI_Command.php';
}

if ( ! class_exists( 'CLI_Cache_Command' ) ) {
	require_once __DIR__ . '/src/CLI_Cache_Command.php';
}

if ( ! class_exists( 'CLI_Alias_Command' ) ) {
	require_once __DIR__ . '/src/CLI_Alias_Command.php';
}

WP_CLI::add_command( 'cli', 'CLI_Command' );

WP_CLI::add_command( 'cli cache', 'CLI_Cache_Command' );

WP_CLI::add_command( 'cli alias', 'CLI_Alias_Command' );
<?php

// Store the path to the Phar early on for `Utils\phar-safe-path()` function.
define( 'WP_CLI_PHAR_PATH', getcwd() );

if ( file_exists( 'phar://wp-cli.phar/php/wp-cli.php' ) ) {
	define( 'WP_CLI_ROOT', 'phar://wp-cli.phar' );
	include WP_CLI_ROOT . '/php/wp-cli.php';
} elseif ( file_exists( 'phar://wp-cli.phar/vendor/wp-cli/wp-cli/php/wp-cli.php' ) ) {
	define( 'WP_CLI_ROOT', 'phar://wp-cli.phar/vendor/wp-cli/wp-cli' );
	include WP_CLI_ROOT . '/php/wp-cli.php';
} else {
	echo "Couldn't find 'php/wp-cli.php'. Was this Phar built correctly?";
	exit( 1 );
}
#!/usr/bin/env php
<?php

/*
 * This file is part of Mustache.php.
 *
 * (c) 2010-2015 Justin Hileman
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

/**
 * A shell script to create a single-file class cache of the entire Mustache
 * library.
 *
 *     $ bin/build_bootstrap.php
 *
 * ... will create a `mustache.php` bootstrap file in the project directory,
 * containing all Mustache library classes. This file can then be included in
 * your project, rather than requiring the Mustache Autoloader.
 */
$baseDir = realpath(dirname(__FILE__) . '/..');

require $baseDir . '/src/Mustache/Autoloader.php';
Mustache_Autoloader::register();

// delete the old file
$file = $baseDir . '/mustache.php';
if (file_exists($file)) {
    unlink($file);
}

// and load the new one
SymfonyClassCollectionLoader::load(array(
    'Mustache_Engine',
    'Mustache_Cache',
    'Mustache_Cache_AbstractCache',
    'Mustache_Cache_FilesystemCache',
    'Mustache_Cache_NoopCache',
    'Mustache_Compiler',
    'Mustache_Context',
    'Mustache_Exception',
    'Mustache_Exception_InvalidArgumentException',
    'Mustache_Exception_LogicException',
    'Mustache_Exception_RuntimeException',
    'Mustache_Exception_SyntaxException',
    'Mustache_Exception_UnknownFilterException',
    'Mustache_Exception_UnknownHelperException',
    'Mustache_Exception_UnknownTemplateException',
    'Mustache_HelperCollection',
    'Mustache_LambdaHelper',
    'Mustache_Loader',
    'Mustache_Loader_ArrayLoader',
    'Mustache_Loader_CascadingLoader',
    'Mustache_Loader_FilesystemLoader',
    'Mustache_Loader_InlineLoader',
    'Mustache_Loader_MutableLoader',
    'Mustache_Loader_StringLoader',
    'Mustache_Logger',
    'Mustache_Logger_AbstractLogger',
    'Mustache_Logger_StreamLogger',
    'Mustache_Parser',
    'Mustache_Template',
    'Mustache_Tokenizer',
), dirname($file), basename($file, '.php'));

/**
 * SymfonyClassCollectionLoader.
 *
 * Based heavily on the Symfony ClassCollectionLoader component, with all
 * the unnecessary bits removed.
 *
 * @license http://www.opensource.org/licenses/MIT
 * @author Fabien Potencier <fabien@symfony.com>
 */
class SymfonyClassCollectionLoader
{
    private static $loaded;

const HEADER = <<<'EOS'
<?php

/*
 * This file is part of Mustache.php.
 *
 * (c) 2010-%d Justin Hileman
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
EOS;

/**
     * Loads a list of classes and caches them in one big file.
     *
     * @param array  $classes   An array of classes to load
     * @param string $cacheDir  A cache directory
     * @param string $name      The cache name prefix
     * @param string $extension File extension of the resulting file
     *
     * @throws InvalidArgumentException When class can't be loaded
     */
    public static function load(array $classes, $cacheDir, $name, $extension = '.php')
    {
        // each $name can only be loaded once per PHP process
        if (isset(self::$loaded[$name])) {
            return;
        }

self::$loaded[$name] = true;

$content = '';
        foreach ($classes as $class) {
            if (!class_exists($class) && !interface_exists($class) && (!function_exists('trait_exists') || !trait_exists($class))) {
                throw new InvalidArgumentException(sprintf('Unable to load class "%s"', $class));
            }

$r = new ReflectionClass($class);
            $content .= preg_replace(array('/^\s*<\?php/', '/\?>\s*$/'), '', file_get_contents($r->getFileName()));
        }

$cache  = $cacheDir . '/' . $name . $extension;
        $header = sprintf(self::HEADER, strftime('%Y'));
        self::writeCacheFile($cache, $header . substr(self::stripComments('<?php ' . $content), 5));
    }

/**
     * Writes a cache file.
     *
     * @param string $file    Filename
     * @param string $content Temporary file content
     *
     * @throws RuntimeException when a cache file cannot be written
     */
    private static function writeCacheFile($file, $content)
    {
        $tmpFile = tempnam(dirname($file), basename($file));
        if (false !== @file_put_contents($tmpFile, $content) && @rename($tmpFile, $file)) {
            chmod($file, 0666 & ~umask());

return;
        }

throw new RuntimeException(sprintf('Failed to write cache file "%s".', $file));
    }

/**
     * Removes comments from a PHP source string.
     *
     * We don't use the PHP php_strip_whitespace() function
     * as we want the content to be readable and well-formatted.
     *
     * @param string $source A PHP string
     *
     * @return string The PHP string with the comments removed
     */
    private static function stripComments($source)
    {
        if (!function_exists('token_get_all')) {
            return $source;
        }

$output = '';
        foreach (token_get_all($source) as $token) {
            if (is_string($token)) {
                $output .= $token;
            } elseif (!in_array($token[0], array(T_COMMENT, T_DOC_COMMENT))) {
                $output .= $token[1];
            }
        }

// replace multiple new lines with a single newline
        $output = preg_replace(array('/\s+$/Sm', '/\n+/S'), "\n", $output);

return $output;
    }
}
<?php

/*
 * This file is part of Mustache.php.
 *
 * (c) 2010-2017 Justin Hileman
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

/**
 * Mustache Template Loader interface.
 */
interface Mustache_Loader
{
    /**
     * Load a Template by name.
     *
     * @throws Mustache_Exception_UnknownTemplateException If a template file is not found
     *
     * @param string $name
     *
     * @return string|Mustache_Source Mustache Template source
     */
    public function load($name);
}
<?php

/**
 * A Mustache implementation in PHP.
 *
 * {@link http://defunkt.github.com/mustache}
 *
 * Mustache is a framework-agnostic logic-less templating language. It enforces separation of view
 * logic from template files. In fact, it is not even possible to embed logic in the template.
 *
 * This is very, very rad.
 *
 * @author Justin Hileman {@link http://justinhileman.com}
 */
class Mustache_Engine
{
    const VERSION        = '2.14.0';
    const SPEC_VERSION   = '1.2.2';

const PRAGMA_FILTERS      = 'FILTERS';
    const PRAGMA_BLOCKS       = 'BLOCKS';
    const PRAGMA_ANCHORED_DOT = 'ANCHORED-DOT';

// Known pragmas
    private static $knownPragmas = array(
        self::PRAGMA_FILTERS      => true,
        self::PRAGMA_BLOCKS       => true,
        self::PRAGMA_ANCHORED_DOT => true,
    );

// Template cache
    private $templates = array();

// Environment
    private $templateClassPrefix = '__Mustache_';
    private $cache;
    private $lambdaCache;
    private $cacheLambdaTemplates = false;
    private $loader;
    private $partialsLoader;
    private $helpers;
    private $escape;
    private $entityFlags = ENT_COMPAT;
    private $charset = 'UTF-8';
    private $logger;
    private $strictCallables = false;
    private $pragmas = array();
    private $delimiters;

// Services
    private $tokenizer;
    private $parser;
    private $compiler;

/**
     * Mustache class constructor.
     *
     * Passing an $options array allows overriding certain Mustache options during instantiation:
     *
     *     $options = array(
     *         // The class prefix for compiled templates. Defaults to '__Mustache_'.
     *         'template_class_prefix' => '__MyTemplates_',
     *
     *         // A Mustache cache instance or a cache directory string for compiled templates.
     *         // Mustache will not cache templates unless this is set.
     *         'cache' => dirname(__FILE__).'/tmp/cache/mustache',
     *
     *         // Override default permissions for cache files. Defaults to using the system-defined umask. It is
     *         // *strongly* recommended that you configure your umask properly rather than overriding permissions here.
     *         'cache_file_mode' => 0666,
     *
     *         // Optionally, enable caching for lambda section templates. This is generally not recommended, as lambda
     *         // sections are often too dynamic to benefit from caching.
     *         'cache_lambda_templates' => true,
     *
     *         // Customize the tag delimiters used by this engine instance. Note that overriding here changes the
     *         // delimiters used to parse all templates and partials loaded by this instance. To override just for a
     *         // single template, use an inline "change delimiters" tag at the start of the template file:
     *         //
     *         //     {{=<% %>=}}
     *         //
     *         'delimiters' => '<% %>',
     *
     *         // A Mustache template loader instance. Uses a StringLoader if not specified.
     *         'loader' => new Mustache_Loader_FilesystemLoader(dirname(__FILE__).'/views'),
     *
     *         // A Mustache loader instance for partials.
     *         'partials_loader' => new Mustache_Loader_FilesystemLoader(dirname(__FILE__).'/views/partials'),
     *
     *         // An array of Mustache partials. Useful for quick-and-dirty string template loading, but not as
     *         // efficient or lazy as a Filesystem (or database) loader.
     *         'partials' => array('foo' => file_get_contents(dirname(__FILE__).'/views/partials/foo.mustache')),
     *
     *         // An array of 'helpers'. Helpers can be global variables or objects, closures (e.g. for higher order
     *         // sections), or any other valid Mustache context value. They will be prepended to the context stack,
     *         // so they will be available in any template loaded by this Mustache instance.
     *         'helpers' => array('i18n' => function ($text) {
     *             // do something translatey here...
     *         }),
     *
     *         // An 'escape' callback, responsible for escaping double-mustache variables.
     *         'escape' => function ($value) {
     *             return htmlspecialchars($buffer, ENT_COMPAT, 'UTF-8');
     *         },
     *
     *         // Type argument for `htmlspecialchars`.  Defaults to ENT_COMPAT.  You may prefer ENT_QUOTES.
     *         'entity_flags' => ENT_QUOTES,
     *
     *         // Character set for `htmlspecialchars`. Defaults to 'UTF-8'. Use 'UTF-8'.
     *         'charset' => 'ISO-8859-1',
     *
     *         // A Mustache Logger instance. No logging will occur unless this is set. Using a PSR-3 compatible
     *         // logging library -- such as Monolog -- is highly recommended. A simple stream logger implementation is
     *         // available as well:
     *         'logger' => new Mustache_Logger_StreamLogger('php://stderr'),
     *
     *         // Only treat Closure instances and invokable classes as callable. If true, values like
     *         // `array('ClassName', 'methodName')` and `array($classInstance, 'methodName')`, which are traditionally
     *         // "callable" in PHP, are not called to resolve variables for interpolation or section contexts. This
     *         // helps protect against arbitrary code execution when user input is passed directly into the template.
     *         // This currently defaults to false, but will default to true in v3.0.
     *         'strict_callables' => true,
     *
     *         // Enable pragmas across all templates, regardless of the presence of pragma tags in the individual
     *         // templates.
     *         'pragmas' => [Mustache_Engine::PRAGMA_FILTERS],
     *     );
     *
     * @throws Mustache_Exception_InvalidArgumentException If `escape` option is not callable
     *
     * @param array $options (default: array())
     */
    public function __construct(array $options = array())
    {
        if (isset($options['template_class_prefix'])) {
            if ((string) $options['template_class_prefix'] === '') {
                throw new Mustache_Exception_InvalidArgumentException('Mustache Constructor "template_class_prefix" must not be empty');
            }

$this->templateClassPrefix = $options['template_class_prefix'];
        }

if (isset($options['cache'])) {
            $cache = $options['cache'];

if (is_string($cache)) {
                $mode  = isset($options['cache_file_mode']) ? $options['cache_file_mode'] : null;
                $cache = new Mustache_Cache_FilesystemCache($cache, $mode);
            }

$this->setCache($cache);
        }

if (isset($options['cache_lambda_templates'])) {
            $this->cacheLambdaTemplates = (bool) $options['cache_lambda_templates'];
        }

if (isset($options['loader'])) {
            $this->setLoader($options['loader']);
        }

if (isset($options['partials_loader'])) {
            $this->setPartialsLoader($options['partials_loader']);
        }

if (isset($options['partials'])) {
            $this->setPartials($options['partials']);
        }

if (isset($options['helpers'])) {
            $this->setHelpers($options['helpers']);
        }

if (isset($options['escape'])) {
            if (!is_callable($options['escape'])) {
                throw new Mustache_Exception_InvalidArgumentException('Mustache Constructor "escape" option must be callable');
            }

$this->escape = $options['escape'];
        }

if (isset($options['entity_flags'])) {
            $this->entityFlags = $options['entity_flags'];
        }

if (isset($options['charset'])) {
            $this->charset = $options['charset'];
        }

if (isset($options['logger'])) {
            $this->setLogger($options['logger']);
        }

if (isset($options['strict_callables'])) {
            $this->strictCallables = $options['strict_callables'];
        }

if (isset($options['delimiters'])) {
            $this->delimiters = $options['delimiters'];
        }

if (isset($options['pragmas'])) {
            foreach ($options['pragmas'] as $pragma) {
                if (!isset(self::$knownPragmas[$pragma])) {
                    throw new Mustache_Exception_InvalidArgumentException(sprintf('Unknown pragma: "%s".', $pragma));
                }
                $this->pragmas[$pragma] = true;
            }
        }
    }

/**
     * Shortcut 'render' invocation.
     *
     * Equivalent to calling `$mustache->loadTemplate($template)->render($context);`
     *
     * @see Mustache_Engine::loadTemplate
     * @see Mustache_Template::render
     *
     * @param string $template
     * @param mixed  $context  (default: array())
     *
     * @return string Rendered template
     */
    public function render($template, $context = array())
    {
        return $this->loadTemplate($template)->render($context);
    }

/**
     * Get the current Mustache escape callback.
     *
     * @return callable|null
     */
    public function getEscape()
    {
        return $this->escape;
    }

/**
     * Get the current Mustache entitity type to escape.
     *
     * @return int
     */
    public function getEntityFlags()
    {
        return $this->entityFlags;
    }

/**
     * Get the current Mustache character set.
     *
     * @return string
     */
    public function getCharset()
    {
        return $this->charset;
    }

/**
     * Get the current globally enabled pragmas.
     *
     * @return array
     */
    public function getPragmas()
    {
        return array_keys($this->pragmas);
    }

/**
     * Set the Mustache template Loader instance.
     *
     * @param Mustache_Loader $loader
     */
    public function setLoader(Mustache_Loader $loader)
    {
        $this->loader = $loader;
    }

/**
     * Get the current Mustache template Loader instance.
     *
     * If no Loader instance has been explicitly specified, this method will instantiate and return
     * a StringLoader instance.
     *
     * @return Mustache_Loader
     */
    public function getLoader()
    {
        if (!isset($this->loader)) {
            $this->loader = new Mustache_Loader_StringLoader();
        }

return $this->loader;
    }

/**
     * Set the Mustache partials Loader instance.
     *
     * @param Mustache_Loader $partialsLoader
     */
    public function setPartialsLoader(Mustache_Loader $partialsLoader)
    {
        $this->partialsLoader = $partialsLoader;
    }

/**
     * Get the current Mustache partials Loader instance.
     *
     * If no Loader instance has been explicitly specified, this method will instantiate and return
     * an ArrayLoader instance.
     *
     * @return Mustache_Loader
     */
    public function getPartialsLoader()
    {
        if (!isset($this->partialsLoader)) {
            $this->partialsLoader = new Mustache_Loader_ArrayLoader();
        }

return $this->partialsLoader;
    }

/**
     * Set partials for the current partials Loader instance.
     *
     * @throws Mustache_Exception_RuntimeException If the current Loader instance is immutable
     *
     * @param array $partials (default: array())
     */
    public function setPartials(array $partials = array())
    {
        if (!isset($this->partialsLoader)) {
            $this->partialsLoader = new Mustache_Loader_ArrayLoader();
        }

if (!$this->partialsLoader instanceof Mustache_Loader_MutableLoader) {
            throw new Mustache_Exception_RuntimeException('Unable to set partials on an immutable Mustache Loader instance');
        }

$this->partialsLoader->setTemplates($partials);
    }

/**
     * Set an array of Mustache helpers.
     *
     * An array of 'helpers'. Helpers can be global variables or objects, closures (e.g. for higher order sections), or
     * any other valid Mustache context value. They will be prepended to the context stack, so they will be available in
     * any template loaded by this Mustache instance.
     *
     * @throws Mustache_Exception_InvalidArgumentException if $helpers is not an array or Traversable
     *
     * @param array|Traversable $helpers
     */
    public function setHelpers($helpers)
    {
        if (!is_array($helpers) && !$helpers instanceof Traversable) {
            throw new Mustache_Exception_InvalidArgumentException('setHelpers expects an array of helpers');
        }

$this->getHelpers()->clear();

foreach ($helpers as $name => $helper) {
            $this->addHelper($name, $helper);
        }
    }

/**
     * Get the current set of Mustache helpers.
     *
     * @see Mustache_Engine::setHelpers
     *
     * @return Mustache_HelperCollection
     */
    public function getHelpers()
    {
        if (!isset($this->helpers)) {
            $this->helpers = new Mustache_HelperCollection();
        }

return $this->helpers;
    }

/**
     * Add a new Mustache helper.
     *
     * @see Mustache_Engine::setHelpers
     *
     * @param string $name
     * @param mixed  $helper
     */
    public function addHelper($name, $helper)
    {
        $this->getHelpers()->add($name, $helper);
    }

/**
     * Get a Mustache helper by name.
     *
     * @see Mustache_Engine::setHelpers
     *
     * @param string $name
     *
     * @return mixed Helper
     */
    public function getHelper($name)
    {
        return $this->getHelpers()->get($name);
    }

/**
     * Check whether this Mustache instance has a helper.
     *
     * @see Mustache_Engine::setHelpers
     *
     * @param string $name
     *
     * @return bool True if the helper is present
     */
    public function hasHelper($name)
    {
        return $this->getHelpers()->has($name);
    }

/**
     * Remove a helper by name.
     *
     * @see Mustache_Engine::setHelpers
     *
     * @param string $name
     */
    public function removeHelper($name)
    {
        $this->getHelpers()->remove($name);
    }

/**
     * Set the Mustache Logger instance.
     *
     * @throws Mustache_Exception_InvalidArgumentException If logger is not an instance of Mustache_Logger or Psr\Log\LoggerInterface
     *
     * @param Mustache_Logger|Psr\Log\LoggerInterface $logger
     */
    public function setLogger($logger = null)
    {
        if ($logger !== null && !($logger instanceof Mustache_Logger || is_a($logger, 'Psr\\Log\\LoggerInterface'))) {
            throw new Mustache_Exception_InvalidArgumentException('Expected an instance of Mustache_Logger or Psr\\Log\\LoggerInterface.');
        }

if ($this->getCache()->getLogger() === null) {
            $this->getCache()->setLogger($logger);
        }

$this->logger = $logger;
    }

/**
     * Get the current Mustache Logger instance.
     *
     * @return Mustache_Logger|Psr\Log\LoggerInterface
     */
    public function getLogger()
    {
        return $this->logger;
    }

/**
     * Set the Mustache Tokenizer instance.
     *
     * @param Mustache_Tokenizer $tokenizer
     */
    public function setTokenizer(Mustache_Tokenizer $tokenizer)
    {
        $this->tokenizer = $tokenizer;
    }

/**
     * Get the current Mustache Tokenizer instance.
     *
     * If no Tokenizer instance has been explicitly specified, this method will instantiate and return a new one.
     *
     * @return Mustache_Tokenizer
     */
    public function getTokenizer()
    {
        if (!isset($this->tokenizer)) {
            $this->tokenizer = new Mustache_Tokenizer();
        }

return $this->tokenizer;
    }

/**
     * Set the Mustache Parser instance.
     *
     * @param Mustache_Parser $parser
     */
    public function setParser(Mustache_Parser $parser)
    {
        $this->parser = $parser;
    }

/**
     * Get the current Mustache Parser instance.
     *
     * If no Parser instance has been explicitly specified, this method will instantiate and return a new one.
     *
     * @return Mustache_Parser
     */
    public function getParser()
    {
        if (!isset($this->parser)) {
            $this->parser = new Mustache_Parser();
        }

return $this->parser;
    }

/**
     * Set the Mustache Compiler instance.
     *
     * @param Mustache_Compiler $compiler
     */
    public function setCompiler(Mustache_Compiler $compiler)
    {
        $this->compiler = $compiler;
    }

/**
     * Get the current Mustache Compiler instance.
     *
     * If no Compiler instance has been explicitly specified, this method will instantiate and return a new one.
     *
     * @return Mustache_Compiler
     */
    public function getCompiler()
    {
        if (!isset($this->compiler)) {
            $this->compiler = new Mustache_Compiler();
        }

return $this->compiler;
    }

/**
     * Set the Mustache Cache instance.
     *
     * @param Mustache_Cache $cache
     */
    public function setCache(Mustache_Cache $cache)
    {
        if (isset($this->logger) && $cache->getLogger() === null) {
            $cache->setLogger($this->getLogger());
        }

$this->cache = $cache;
    }

/**
     * Get the current Mustache Cache instance.
     *
     * If no Cache instance has been explicitly specified, this method will instantiate and return a new one.
     *
     * @return Mustache_Cache
     */
    public function getCache()
    {
        if (!isset($this->cache)) {
            $this->setCache(new Mustache_Cache_NoopCache());
        }

return $this->cache;
    }

/**
     * Get the current Lambda Cache instance.
     *
     * If 'cache_lambda_templates' is enabled, this is the default cache instance. Otherwise, it is a NoopCache.
     *
     * @see Mustache_Engine::getCache
     *
     * @return Mustache_Cache
     */
    protected function getLambdaCache()
    {
        if ($this->cacheLambdaTemplates) {
            return $this->getCache();
        }

if (!isset($this->lambdaCache)) {
            $this->lambdaCache = new Mustache_Cache_NoopCache();
        }

return $this->lambdaCache;
    }

/**
     * Helper method to generate a Mustache template class.
     *
     * This method must be updated any time options are added which make it so
     * the same template could be parsed and compiled multiple different ways.
     *
     * @param string|Mustache_Source $source
     *
     * @return string Mustache Template class name
     */
    public function getTemplateClassName($source)
    {
        // For the most part, adding a new option here should do the trick.
        //
        // Pick a value here which is unique for each possible way the template
        // could be compiled... but not necessarily unique per option value. See
        // escape below, which only needs to differentiate between 'custom' and
        // 'default' escapes.
        //
        // Keep this list in alphabetical order :)
        $chunks = array(
            'charset'         => $this->charset,
            'delimiters'      => $this->delimiters ? $this->delimiters : '{{ }}',
            'entityFlags'     => $this->entityFlags,
            'escape'          => isset($this->escape) ? 'custom' : 'default',
            'key'             => ($source instanceof Mustache_Source) ? $source->getKey() : 'source',
            'pragmas'         => $this->getPragmas(),
            'strictCallables' => $this->strictCallables,
            'version'         => self::VERSION,
        );

$key = json_encode($chunks);

// Template Source instances have already provided their own source key. For strings, just include the whole
        // source string in the md5 hash.
        if (!$source instanceof Mustache_Source) {
            $key .= "\n" . $source;
        }

return $this->templateClassPrefix . md5($key);
    }

/**
     * Load a Mustache Template by name.
     *
     * @param string $name
     *
     * @return Mustache_Template
     */
    public function loadTemplate($name)
    {
        return $this->loadSource($this->getLoader()->load($name));
    }

/**
     * Load a Mustache partial Template by name.
     *
     * This is a helper method used internally by Template instances for loading partial templates. You can most likely
     * ignore it completely.
     *
     * @param string $name
     *
     * @return Mustache_Template
     */
    public function loadPartial($name)
    {
        try {
            if (isset($this->partialsLoader)) {
                $loader = $this->partialsLoader;
            } elseif (isset($this->loader) && !$this->loader instanceof Mustache_Loader_StringLoader) {
                $loader = $this->loader;
            } else {
                throw new Mustache_Exception_UnknownTemplateException($name);
            }

return $this->loadSource($loader->load($name));
        } catch (Mustache_Exception_UnknownTemplateException $e) {
            // If the named partial cannot be found, log then return null.
            $this->log(
                Mustache_Logger::WARNING,
                'Partial not found: "{name}"',
                array('name' => $e->getTemplateName())
            );
        }
    }

/**
     * Load a Mustache lambda Template by source.
     *
     * This is a helper method used by Template instances to generate subtemplates for Lambda sections. You can most
     * likely ignore it completely.
     *
     * @param string $source
     * @param string $delims (default: null)
     *
     * @return Mustache_Template
     */
    public function loadLambda($source, $delims = null)
    {
        if ($delims !== null) {
            $source = $delims . "\n" . $source;
        }

return $this->loadSource($source, $this->getLambdaCache());
    }

/**
     * Instantiate and return a Mustache Template instance by source.
     *
     * Optionally provide a Mustache_Cache instance. This is used internally by Mustache_Engine::loadLambda to respect
     * the 'cache_lambda_templates' configuration option.
     *
     * @see Mustache_Engine::loadTemplate
     * @see Mustache_Engine::loadPartial
     * @see Mustache_Engine::loadLambda
     *
     * @param string|Mustache_Source $source
     * @param Mustache_Cache         $cache  (default: null)
     *
     * @return Mustache_Template
     */
    private function loadSource($source, Mustache_Cache $cache = null)
    {
        $className = $this->getTemplateClassName($source);

if (!isset($this->templates[$className])) {
            if ($cache === null) {
                $cache = $this->getCache();
            }

if (!class_exists($className, false)) {
                if (!$cache->load($className)) {
                    $compiled = $this->compile($source);
                    $cache->cache($className, $compiled);
                }
            }

$this->log(
                Mustache_Logger::DEBUG,
                'Instantiating template: "{className}"',
                array('className' => $className)
            );

$this->templates[$className] = new $className($this);
        }

return $this->templates[$className];
    }

/**
     * Helper method to tokenize a Mustache template.
     *
     * @see Mustache_Tokenizer::scan
     *
     * @param string $source
     *
     * @return array Tokens
     */
    private function tokenize($source)
    {
        return $this->getTokenizer()->scan($source, $this->delimiters);
    }

/**
     * Helper method to parse a Mustache template.
     *
     * @see Mustache_Parser::parse
     *
     * @param string $source
     *
     * @return array Token tree
     */
    private function parse($source)
    {
        $parser = $this->getParser();
        $parser->setPragmas($this->getPragmas());

return $parser->parse($this->tokenize($source));
    }

/**
     * Helper method to compile a Mustache template.
     *
     * @see Mustache_Compiler::compile
     *
     * @param string|Mustache_Source $source
     *
     * @return string generated Mustache template class code
     */
    private function compile($source)
    {
        $name = $this->getTemplateClassName($source);

$this->log(
            Mustache_Logger::INFO,
            'Compiling template to "{className}" class',
            array('className' => $name)
        );

if ($source instanceof Mustache_Source) {
            $source = $source->getSource();
        }
        $tree = $this->parse($source);

$compiler = $this->getCompiler();
        $compiler->setPragmas($this->getPragmas());

return $compiler->compile($source, $tree, $name, isset($this->escape), $this->charset, $this->strictCallables, $this->entityFlags);
    }

/**
     * Add a log record if logging is enabled.
     *
     * @param int    $level   The logging level
     * @param string $message The log message
     * @param array  $context The log context
     */
    private function log($level, $message, array $context = array())
    {
        if (isset($this->logger)) {
            $this->logger->log($level, $message, $context);
        }
    }
}
<?php

/**
 * Mustache Template rendering Context.
 */
class Mustache_Context
{
    private $stack      = array();
    private $blockStack = array();

/**
     * Mustache rendering Context constructor.
     *
     * @param mixed $context Default rendering context (default: null)
     */
    public function __construct($context = null)
    {
        if ($context !== null) {
            $this->stack = array($context);
        }
    }

/**
     * Push a new Context frame onto the stack.
     *
     * @param mixed $value Object or array to use for context
     */
    public function push($value)
    {
        array_push($this->stack, $value);
    }

/**
     * Push a new Context frame onto the block context stack.
     *
     * @param mixed $value Object or array to use for block context
     */
    public function pushBlockContext($value)
    {
        array_push($this->blockStack, $value);
    }

/**
     * Pop the last Context frame from the stack.
     *
     * @return mixed Last Context frame (object or array)
     */
    public function pop()
    {
        return array_pop($this->stack);
    }

/**
     * Pop the last block Context frame from the stack.
     *
     * @return mixed Last block Context frame (object or array)
     */
    public function popBlockContext()
    {
        return array_pop($this->blockStack);
    }

/**
     * Get the last Context frame.
     *
     * @return mixed Last Context frame (object or array)
     */
    public function last()
    {
        return end($this->stack);
    }

/**
     * Find a variable in the Context stack.
     *
     * Starting with the last Context frame (the context of the innermost section), and working back to the top-level
     * rendering context, look for a variable with the given name:
     *
     *  * If the Context frame is an associative array which contains the key $id, returns the value of that element.
     *  * If the Context frame is an object, this will check first for a public method, then a public property named
     *    $id. Failing both of these, it will try `__isset` and `__get` magic methods.
     *  * If a value named $id is not found in any Context frame, returns an empty string.
     *
     * @param string $id Variable name
     *
     * @return mixed Variable value, or '' if not found
     */
    public function find($id)
    {
        return $this->findVariableInStack($id, $this->stack);
    }

/**
     * Find a 'dot notation' variable in the Context stack.
     *
     * Note that dot notation traversal bubbles through scope differently than the regular find method. After finding
     * the initial chunk of the dotted name, each subsequent chunk is searched for only within the value of the previous
     * result. For example, given the following context stack:
     *
     *     $data = array(
     *         'name' => 'Fred',
     *         'child' => array(
     *             'name' => 'Bob'
     *         ),
     *     );
     *
     * ... and the Mustache following template:
     *
     *     {{ child.name }}
     *
     * ... the `name` value is only searched for within the `child` value of the global Context, not within parent
     * Context frames.
     *
     * @param string $id Dotted variable selector
     *
     * @return mixed Variable value, or '' if not found
     */
    public function findDot($id)
    {
        $chunks = explode('.', $id);
        $first  = array_shift($chunks);
        $value  = $this->findVariableInStack($first, $this->stack);

foreach ($chunks as $chunk) {
            if ($value === '') {
                return $value;
            }

$value = $this->findVariableInStack($chunk, array($value));
        }

return $value;
    }

/**
     * Find an 'anchored dot notation' variable in the Context stack.
     *
     * This is the same as findDot(), except it looks in the top of the context
     * stack for the first value, rather than searching the whole context stack
     * and starting from there.
     *
     * @see Mustache_Context::findDot
     *
     * @throws Mustache_Exception_InvalidArgumentException if given an invalid anchored dot $id
     *
     * @param string $id Dotted variable selector
     *
     * @return mixed Variable value, or '' if not found
     */
    public function findAnchoredDot($id)
    {
        $chunks = explode('.', $id);
        $first  = array_shift($chunks);
        if ($first !== '') {
            throw new Mustache_Exception_InvalidArgumentException(sprintf('Unexpected id for findAnchoredDot: %s', $id));
        }

$value  = $this->last();

foreach ($chunks as $chunk) {
            if ($value === '') {
                return $value;
            }

$value = $this->findVariableInStack($chunk, array($value));
        }

return $value;
    }

/**
     * Find an argument in the block context stack.
     *
     * @param string $id
     *
     * @return mixed Variable value, or '' if not found
     */
    public function findInBlock($id)
    {
        foreach ($this->blockStack as $context) {
            if (array_key_exists($id, $context)) {
                return $context[$id];
            }
        }

return '';
    }

/**
     * Helper function to find a variable in the Context stack.
     *
     * @see Mustache_Context::find
     *
     * @param string $id    Variable name
     * @param array  $stack Context stack
     *
     * @return mixed Variable value, or '' if not found
     */
    private function findVariableInStack($id, array $stack)
    {
        for ($i = count($stack) - 1; $i >= 0; $i--) {
            $frame = &$stack[$i];

switch (gettype($frame)) {
                case 'object':
                    if (!($frame instanceof Closure)) {
                        // Note that is_callable() *will not work here*
                        // See https://github.com/bobthecow/mustache.php/wiki/Magic-Methods
                        if (method_exists($frame, $id)) {
                            return $frame->$id();
                        }

if (isset($frame->$id)) {
                            return $frame->$id;
                        }

if ($frame instanceof ArrayAccess && isset($frame[$id])) {
                            return $frame[$id];
                        }
                    }
                    break;

case 'array':
                    if (array_key_exists($id, $frame)) {
                        return $frame[$id];
                    }
                    break;
            }
        }

return '';
    }
}
<?php

/**
 * Describes a Mustache logger instance.
 *
 * This is identical to the Psr\Log\LoggerInterface.
 *
 * The message MUST be a string or object implementing __toString().
 *
 * The message MAY contain placeholders in the form: {foo} where foo
 * will be replaced by the context data in key "foo".
 *
 * The context array can contain arbitrary data, the only assumption that
 * can be made by implementors is that if an Exception instance is given
 * to produce a stack trace, it MUST be in a key named "exception".
 *
 * See https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-3-logger-interface.md
 * for the full interface specification.
 */
interface Mustache_Logger
{
    /**
     * Psr\Log compatible log levels.
     */
    const EMERGENCY = 'emergency';
    const ALERT     = 'alert';
    const CRITICAL  = 'critical';
    const ERROR     = 'error';
    const WARNING   = 'warning';
    const NOTICE    = 'notice';
    const INFO      = 'info';
    const DEBUG     = 'debug';

/**
     * System is unusable.
     *
     * @param string $message
     * @param array  $context
     */
    public function emergency($message, array $context = array());

/**
     * Action must be taken immediately.
     *
     * Example: Entire website down, database unavailable, etc. This should
     * trigger the SMS alerts and wake you up.
     *
     * @param string $message
     * @param array  $context
     */
    public function alert($message, array $context = array());

/**
     * Critical conditions.
     *
     * Example: Application component unavailable, unexpected exception.
     *
     * @param string $message
     * @param array  $context
     */
    public function critical($message, array $context = array());

/**
     * Runtime errors that do not require immediate action but should typically
     * be logged and monitored.
     *
     * @param string $message
     * @param array  $context
     */
    public function error($message, array $context = array());

/**
     * Exceptional occurrences that are not errors.
     *
     * Example: Use of deprecated APIs, poor use of an API, undesirable things
     * that are not necessarily wrong.
     *
     * @param string $message
     * @param array  $context
     */
    public function warning($message, array $context = array());

/**
     * Normal but significant events.
     *
     * @param string $message
     * @param array  $context
     */
    public function notice($message, array $context = array());

/**
     * Interesting events.
     *
     * Example: User logs in, SQL logs.
     *
     * @param string $message
     * @param array  $context
     */
    public function info($message, array $context = array());

/**
     * Detailed debug information.
     *
     * @param string $message
     * @param array  $context
     */
    public function debug($message, array $context = array());

/**
     * Logs with an arbitrary level.
     *
     * @param mixed  $level
     * @param string $message
     * @param array  $context
     */
    public function log($level, $message, array $context = array());
}
<?php

/**
 * Mustache Compiler class.
 *
 * This class is responsible for turning a Mustache token parse tree into normal PHP source code.
 */
class Mustache_Compiler
{
    private $pragmas;
    private $defaultPragmas = array();
    private $sections;
    private $blocks;
    private $source;
    private $indentNextLine;
    private $customEscape;
    private $entityFlags;
    private $charset;
    private $strictCallables;

/**
     * Compile a Mustache token parse tree into PHP source code.
     *
     * @param string $source          Mustache Template source code
     * @param string $tree            Parse tree of Mustache tokens
     * @param string $name            Mustache Template class name
     * @param bool   $customEscape    (default: false)
     * @param string $charset         (default: 'UTF-8')
     * @param bool   $strictCallables (default: false)
     * @param int    $entityFlags     (default: ENT_COMPAT)
     *
     * @return string Generated PHP source code
     */
    public function compile($source, array $tree, $name, $customEscape = false, $charset = 'UTF-8', $strictCallables = false, $entityFlags = ENT_COMPAT)
    {
        $this->pragmas         = $this->defaultPragmas;
        $this->sections        = array();
        $this->blocks          = array();
        $this->source          = $source;
        $this->indentNextLine  = true;
        $this->customEscape    = $customEscape;
        $this->entityFlags     = $entityFlags;
        $this->charset         = $charset;
        $this->strictCallables = $strictCallables;

return $this->writeCode($tree, $name);
    }

/**
     * Enable pragmas across all templates, regardless of the presence of pragma
     * tags in the individual templates.
     *
     * @internal Users should set global pragmas in Mustache_Engine, not here :)
     *
     * @param string[] $pragmas
     */
    public function setPragmas(array $pragmas)
    {
        $this->pragmas = array();
        foreach ($pragmas as $pragma) {
            $this->pragmas[$pragma] = true;
        }
        $this->defaultPragmas = $this->pragmas;
    }

/**
     * Helper function for walking the Mustache token parse tree.
     *
     * @throws Mustache_Exception_SyntaxException upon encountering unknown token types
     *
     * @param array $tree  Parse tree of Mustache tokens
     * @param int   $level (default: 0)
     *
     * @return string Generated PHP source code
     */
    private function walk(array $tree, $level = 0)
    {
        $code = '';
        $level++;
        foreach ($tree as $node) {
            switch ($node[Mustache_Tokenizer::TYPE]) {
                case Mustache_Tokenizer::T_PRAGMA:
                    $this->pragmas[$node[Mustache_Tokenizer::NAME]] = true;
                    break;

case Mustache_Tokenizer::T_SECTION:
                    $code .= $this->section(
                        $node[Mustache_Tokenizer::NODES],
                        $node[Mustache_Tokenizer::NAME],
                        isset($node[Mustache_Tokenizer::FILTERS]) ? $node[Mustache_Tokenizer::FILTERS] : array(),
                        $node[Mustache_Tokenizer::INDEX],
                        $node[Mustache_Tokenizer::END],
                        $node[Mustache_Tokenizer::OTAG],
                        $node[Mustache_Tokenizer::CTAG],
                        $level
                    );
                    break;

case Mustache_Tokenizer::T_INVERTED:
                    $code .= $this->invertedSection(
                        $node[Mustache_Tokenizer::NODES],
                        $node[Mustache_Tokenizer::NAME],
                        isset($node[Mustache_Tokenizer::FILTERS]) ? $node[Mustache_Tokenizer::FILTERS] : array(),
                        $level
                    );
                    break;

case Mustache_Tokenizer::T_PARTIAL:
                    $code .= $this->partial(
                        $node[Mustache_Tokenizer::NAME],
                        isset($node[Mustache_Tokenizer::INDENT]) ? $node[Mustache_Tokenizer::INDENT] : '',
                        $level
                    );
                    break;

case Mustache_Tokenizer::T_PARENT:
                    $code .= $this->parent(
                        $node[Mustache_Tokenizer::NAME],
                        isset($node[Mustache_Tokenizer::INDENT]) ? $node[Mustache_Tokenizer::INDENT] : '',
                        $node[Mustache_Tokenizer::NODES],
                        $level
                    );
                    break;

case Mustache_Tokenizer::T_BLOCK_ARG:
                    $code .= $this->blockArg(
                        $node[Mustache_Tokenizer::NODES],
                        $node[Mustache_Tokenizer::NAME],
                        $node[Mustache_Tokenizer::INDEX],
                        $node[Mustache_Tokenizer::END],
                        $node[Mustache_Tokenizer::OTAG],
                        $node[Mustache_Tokenizer::CTAG],
                        $level
                    );
                    break;

case Mustache_Tokenizer::T_BLOCK_VAR:
                    $code .= $this->blockVar(
                        $node[Mustache_Tokenizer::NODES],
                        $node[Mustache_Tokenizer::NAME],
                        $node[Mustache_Tokenizer::INDEX],
                        $node[Mustache_Tokenizer::END],
                        $node[Mustache_Tokenizer::OTAG],
                        $node[Mustache_Tokenizer::CTAG],
                        $level
                    );
                    break;

case Mustache_Tokenizer::T_COMMENT:
                    break;

case Mustache_Tokenizer::T_ESCAPED:
                case Mustache_Tokenizer::T_UNESCAPED:
                case Mustache_Tokenizer::T_UNESCAPED_2:
                    $code .= $this->variable(
                        $node[Mustache_Tokenizer::NAME],
                        isset($node[Mustache_Tokenizer::FILTERS]) ? $node[Mustache_Tokenizer::FILTERS] : array(),
                        $node[Mustache_Tokenizer::TYPE] === Mustache_Tokenizer::T_ESCAPED,
                        $level
                    );
                    break;

case Mustache_Tokenizer::T_TEXT:
                    $code .= $this->text($node[Mustache_Tokenizer::VALUE], $level);
                    break;

default:
                    throw new Mustache_Exception_SyntaxException(sprintf('Unknown token type: %s', $node[Mustache_Tokenizer::TYPE]), $node);
            }
        }

return $code;
    }

const KLASS = '<?php

class %s extends Mustache_Template
        {
            private $lambdaHelper;%s

public function renderInternal(Mustache_Context $context, $indent = \'\')
            {
                $this->lambdaHelper = new Mustache_LambdaHelper($this->mustache, $context);
                $buffer = \'\';
        %s

return $buffer;
            }
        %s
        %s
        }';

const KLASS_NO_LAMBDAS = '<?php

class %s extends Mustache_Template
        {%s
            public function renderInternal(Mustache_Context $context, $indent = \'\')
            {
                $buffer = \'\';
        %s

return $buffer;
            }
        }';

const STRICT_CALLABLE = 'protected $strictCallables = true;';

/**
     * Generate Mustache Template class PHP source.
     *
     * @param array  $tree Parse tree of Mustache tokens
     * @param string $name Mustache Template class name
     *
     * @return string Generated PHP source code
     */
    private function writeCode($tree, $name)
    {
        $code     = $this->walk($tree);
        $sections = implode("\n", $this->sections);
        $blocks   = implode("\n", $this->blocks);
        $klass    = empty($this->sections) && empty($this->blocks) ? self::KLASS_NO_LAMBDAS : self::KLASS;

$callable = $this->strictCallables ? $this->prepare(self::STRICT_CALLABLE) : '';

return sprintf($this->prepare($klass, 0, false, true), $name, $callable, $code, $sections, $blocks);
    }

const BLOCK_VAR = '
        $blockFunction = $context->findInBlock(%s);
        if (is_callable($blockFunction)) {
            $buffer .= call_user_func($blockFunction, $context);
        %s}
    ';

const BLOCK_VAR_ELSE = '} else {%s';

/**
     * Generate Mustache Template inheritance block variable PHP source.
     *
     * @param array  $nodes Array of child tokens
     * @param string $id    Section name
     * @param int    $start Section start offset
     * @param int    $end   Section end offset
     * @param string $otag  Current Mustache opening tag
     * @param string $ctag  Current Mustache closing tag
     * @param int    $level
     *
     * @return string Generated PHP source code
     */
    private function blockVar($nodes, $id, $start, $end, $otag, $ctag, $level)
    {
        $id = var_export($id, true);

$else = $this->walk($nodes, $level);
        if ($else !== '') {
            $else = sprintf($this->prepare(self::BLOCK_VAR_ELSE, $level + 1, false, true), $else);
        }

return sprintf($this->prepare(self::BLOCK_VAR, $level), $id, $else);
    }

const BLOCK_ARG = '%s => array($this, \'block%s\'),';

/**
     * Generate Mustache Template inheritance block argument PHP source.
     *
     * @param array  $nodes Array of child tokens
     * @param string $id    Section name
     * @param int    $start Section start offset
     * @param int    $end   Section end offset
     * @param string $otag  Current Mustache opening tag
     * @param string $ctag  Current Mustache closing tag
     * @param int    $level
     *
     * @return string Generated PHP source code
     */
    private function blockArg($nodes, $id, $start, $end, $otag, $ctag, $level)
    {
        $key = $this->block($nodes);
        $id = var_export($id, true);

return sprintf($this->prepare(self::BLOCK_ARG, $level), $id, $key);
    }

const BLOCK_FUNCTION = '
        public function block%s($context)
        {
            $indent = $buffer = \'\';%s

return $buffer;
        }
    ';

/**
     * Generate Mustache Template inheritance block function PHP source.
     *
     * @param array $nodes Array of child tokens
     *
     * @return string key of new block function
     */
    private function block($nodes)
    {
        $code = $this->walk($nodes, 0);
        $key = ucfirst(md5($code));

if (!isset($this->blocks[$key])) {
            $this->blocks[$key] = sprintf($this->prepare(self::BLOCK_FUNCTION, 0), $key, $code);
        }

return $key;
    }

const SECTION_CALL = '
        $value = $context->%s(%s);%s
        $buffer .= $this->section%s($context, $indent, $value);
    ';

const SECTION = '
        private function section%s(Mustache_Context $context, $indent, $value)
        {
            $buffer = \'\';

if (%s) {
                $source = %s;
                $result = (string) call_user_func($value, $source, %s);
                if (strpos($result, \'{{\') === false) {
                    $buffer .= $result;
                } else {
                    $buffer .= $this->mustache
                        ->loadLambda($result%s)
                        ->renderInternal($context);
                }
            } elseif (!empty($value)) {
                $values = $this->isIterable($value) ? $value : array($value);
                foreach ($values as $value) {
                    $context->push($value);
                    %s
                    $context->pop();
                }
            }

return $buffer;
        }
    ';

/**
     * Generate Mustache Template section PHP source.
     *
     * @param array    $nodes   Array of child tokens
     * @param string   $id      Section name
     * @param string[] $filters Array of filters
     * @param int      $start   Section start offset
     * @param int      $end     Section end offset
     * @param string   $otag    Current Mustache opening tag
     * @param string   $ctag    Current Mustache closing tag
     * @param int      $level
     *
     * @return string Generated section PHP source code
     */
    private function section($nodes, $id, $filters, $start, $end, $otag, $ctag, $level)
    {
        $source   = var_export(substr($this->source, $start, $end - $start), true);
        $callable = $this->getCallable();

if ($otag !== '{{' || $ctag !== '}}') {
            $delimTag = var_export(sprintf('{{= %s %s =}}', $otag, $ctag), true);
            $helper = sprintf('$this->lambdaHelper->withDelimiters(%s)', $delimTag);
            $delims = ', ' . $delimTag;
        } else {
            $helper = '$this->lambdaHelper';
            $delims = '';
        }

$key = ucfirst(md5($delims . "\n" . $source));

if (!isset($this->sections[$key])) {
            $this->sections[$key] = sprintf($this->prepare(self::SECTION), $key, $callable, $source, $helper, $delims, $this->walk($nodes, 2));
        }

$method  = $this->getFindMethod($id);
        $id      = var_export($id, true);
        $filters = $this->getFilters($filters, $level);

return sprintf($this->prepare(self::SECTION_CALL, $level), $method, $id, $filters, $key);
    }

const INVERTED_SECTION = '
        $value = $context->%s(%s);%s
        if (empty($value)) {
            %s
        }
    ';

/**
     * Generate Mustache Template inverted section PHP source.
     *
     * @param array    $nodes   Array of child tokens
     * @param string   $id      Section name
     * @param string[] $filters Array of filters
     * @param int      $level
     *
     * @return string Generated inverted section PHP source code
     */
    private function invertedSection($nodes, $id, $filters, $level)
    {
        $method  = $this->getFindMethod($id);
        $id      = var_export($id, true);
        $filters = $this->getFilters($filters, $level);

return sprintf($this->prepare(self::INVERTED_SECTION, $level), $method, $id, $filters, $this->walk($nodes, $level));
    }

const PARTIAL_INDENT = ', $indent . %s';
    const PARTIAL = '
        if ($partial = $this->mustache->loadPartial(%s)) {
            $buffer .= $partial->renderInternal($context%s);
        }
    ';

/**
     * Generate Mustache Template partial call PHP source.
     *
     * @param string $id     Partial name
     * @param string $indent Whitespace indent to apply to partial
     * @param int    $level
     *
     * @return string Generated partial call PHP source code
     */
    private function partial($id, $indent, $level)
    {
        if ($indent !== '') {
            $indentParam = sprintf(self::PARTIAL_INDENT, var_export($indent, true));
        } else {
            $indentParam = '';
        }

return sprintf(
            $this->prepare(self::PARTIAL, $level),
            var_export($id, true),
            $indentParam
        );
    }

const PARENT = '
        if ($parent = $this->mustache->loadPartial(%s)) {
            $context->pushBlockContext(array(%s
            ));
            $buffer .= $parent->renderInternal($context, $indent);
            $context->popBlockContext();
        }
    ';

const PARENT_NO_CONTEXT = '
        if ($parent = $this->mustache->loadPartial(%s)) {
            $buffer .= $parent->renderInternal($context, $indent);
        }
    ';

/**
     * Generate Mustache Template inheritance parent call PHP source.
     *
     * @param string $id       Parent tag name
     * @param string $indent   Whitespace indent to apply to parent
     * @param array  $children Child nodes
     * @param int    $level
     *
     * @return string Generated PHP source code
     */
    private function parent($id, $indent, array $children, $level)
    {
        $realChildren = array_filter($children, array(__CLASS__, 'onlyBlockArgs'));

if (empty($realChildren)) {
            return sprintf($this->prepare(self::PARENT_NO_CONTEXT, $level), var_export($id, true));
        }

return sprintf(
            $this->prepare(self::PARENT, $level),
            var_export($id, true),
            $this->walk($realChildren, $level + 1)
        );
    }

/**
     * Helper method for filtering out non-block-arg tokens.
     *
     * @param array $node
     *
     * @return bool True if $node is a block arg token
     */
    private static function onlyBlockArgs(array $node)
    {
        return $node[Mustache_Tokenizer::TYPE] === Mustache_Tokenizer::T_BLOCK_ARG;
    }

const VARIABLE = '
        $value = $this->resolveValue($context->%s(%s), $context);%s
        $buffer .= %s($value === null ? \'\' : %s);
    ';

/**
     * Generate Mustache Template variable interpolation PHP source.
     *
     * @param string   $id      Variable name
     * @param string[] $filters Array of filters
     * @param bool     $escape  Escape the variable value for output?
     * @param int      $level
     *
     * @return string Generated variable interpolation PHP source
     */
    private function variable($id, $filters, $escape, $level)
    {
        $method  = $this->getFindMethod($id);
        $id      = ($method !== 'last') ? var_export($id, true) : '';
        $filters = $this->getFilters($filters, $level);
        $value   = $escape ? $this->getEscape() : '$value';

return sprintf($this->prepare(self::VARIABLE, $level), $method, $id, $filters, $this->flushIndent(), $value);
    }

const FILTER = '
        $filter = $context->%s(%s);
        if (!(%s)) {
            throw new Mustache_Exception_UnknownFilterException(%s);
        }
        $value = call_user_func($filter, $value);%s
    ';

/**
     * Generate Mustache Template variable filtering PHP source.
     *
     * @param string[] $filters Array of filters
     * @param int      $level
     *
     * @return string Generated filter PHP source
     */
    private function getFilters(array $filters, $level)
    {
        if (empty($filters)) {
            return '';
        }

$name     = array_shift($filters);
        $method   = $this->getFindMethod($name);
        $filter   = ($method !== 'last') ? var_export($name, true) : '';
        $callable = $this->getCallable('$filter');
        $msg      = var_export($name, true);

return sprintf($this->prepare(self::FILTER, $level), $method, $filter, $callable, $msg, $this->getFilters($filters, $level));
    }

const LINE = '$buffer .= "\n";';
    const TEXT = '$buffer .= %s%s;';

/**
     * Generate Mustache Template output Buffer call PHP source.
     *
     * @param string $text
     * @param int    $level
     *
     * @return string Generated output Buffer call PHP source
     */
    private function text($text, $level)
    {
        $indentNextLine = (substr($text, -1) === "\n");
        $code = sprintf($this->prepare(self::TEXT, $level), $this->flushIndent(), var_export($text, true));
        $this->indentNextLine = $indentNextLine;

return $code;
    }

/**
     * Prepare PHP source code snippet for output.
     *
     * @param string $text
     * @param int    $bonus          Additional indent level (default: 0)
     * @param bool   $prependNewline Prepend a newline to the snippet? (default: true)
     * @param bool   $appendNewline  Append a newline to the snippet? (default: false)
     *
     * @return string PHP source code snippet
     */
    private function prepare($text, $bonus = 0, $prependNewline = true, $appendNewline = false)
    {
        $text = ($prependNewline ? "\n" : '') . trim($text);
        if ($prependNewline) {
            $bonus++;
        }
        if ($appendNewline) {
            $text .= "\n";
        }

return preg_replace("/\n( {8})?/", "\n" . str_repeat(' ', $bonus * 4), $text);
    }

const DEFAULT_ESCAPE = 'htmlspecialchars(%s, %s, %s)';
    const CUSTOM_ESCAPE  = 'call_user_func($this->mustache->getEscape(), %s)';

/**
     * Get the current escaper.
     *
     * @param string $value (default: '$value')
     *
     * @return string Either a custom callback, or an inline call to `htmlspecialchars`
     */
    private function getEscape($value = '$value')
    {
        if ($this->customEscape) {
            return sprintf(self::CUSTOM_ESCAPE, $value);
        }

return sprintf(self::DEFAULT_ESCAPE, $value, var_export($this->entityFlags, true), var_export($this->charset, true));
    }

/**
     * Select the appropriate Context `find` method for a given $id.
     *
     * The return value will be one of `find`, `findDot`, `findAnchoredDot` or `last`.
     *
     * @see Mustache_Context::find
     * @see Mustache_Context::findDot
     * @see Mustache_Context::last
     *
     * @param string $id Variable name
     *
     * @return string `find` method name
     */
    private function getFindMethod($id)
    {
        if ($id === '.') {
            return 'last';
        }

if (isset($this->pragmas[Mustache_Engine::PRAGMA_ANCHORED_DOT]) && $this->pragmas[Mustache_Engine::PRAGMA_ANCHORED_DOT]) {
            if (substr($id, 0, 1) === '.') {
                return 'findAnchoredDot';
            }
        }

if (strpos($id, '.') === false) {
            return 'find';
        }

return 'findDot';
    }

const IS_CALLABLE        = '!is_string(%s) && is_callable(%s)';
    const STRICT_IS_CALLABLE = 'is_object(%s) && is_callable(%s)';

/**
     * Helper function to compile strict vs lax "is callable" logic.
     *
     * @param string $variable (default: '$value')
     *
     * @return string "is callable" logic
     */
    private function getCallable($variable = '$value')
    {
        $tpl = $this->strictCallables ? self::STRICT_IS_CALLABLE : self::IS_CALLABLE;

return sprintf($tpl, $variable, $variable);
    }

const LINE_INDENT = '$indent . ';

/**
     * Get the current $indent prefix to write to the buffer.
     *
     * @return string "$indent . " or ""
     */
    private function flushIndent()
    {
        if (!$this->indentNextLine) {
            return '';
        }

$this->indentNextLine = false;

return self::LINE_INDENT;
    }
}
<?php

/**
 * Mustache Template filesystem Loader implementation.
 *
 * A FilesystemLoader instance loads Mustache Template source from the filesystem by name:
 *
 *     $loader = new Mustache_Loader_FilesystemLoader(dirname(__FILE__).'/views');
 *     $tpl = $loader->load('foo'); // equivalent to `file_get_contents(dirname(__FILE__).'/views/foo.mustache');
 *
 * This is probably the most useful Mustache Loader implementation. It can be used for partials and normal Templates:
 *
 *     $m = new Mustache(array(
 *          'loader'          => new Mustache_Loader_FilesystemLoader(dirname(__FILE__).'/views'),
 *          'partials_loader' => new Mustache_Loader_FilesystemLoader(dirname(__FILE__).'/views/partials'),
 *     ));
 */
class Mustache_Loader_FilesystemLoader implements Mustache_Loader
{
    private $baseDir;
    private $extension = '.mustache';
    private $templates = array();

/**
     * Mustache filesystem Loader constructor.
     *
     * Passing an $options array allows overriding certain Loader options during instantiation:
     *
     *     $options = array(
     *         // The filename extension used for Mustache templates. Defaults to '.mustache'
     *         'extension' => '.ms',
     *     );
     *
     * @throws Mustache_Exception_RuntimeException if $baseDir does not exist
     *
     * @param string $baseDir Base directory containing Mustache template files
     * @param array  $options Array of Loader options (default: array())
     */
    public function __construct($baseDir, array $options = array())
    {
        $this->baseDir = $baseDir;

if (strpos($this->baseDir, '://') === false) {
            $this->baseDir = realpath($this->baseDir);
        }

if ($this->shouldCheckPath() && !is_dir($this->baseDir)) {
            throw new Mustache_Exception_RuntimeException(sprintf('FilesystemLoader baseDir must be a directory: %s', $baseDir));
        }

if (array_key_exists('extension', $options)) {
            if (empty($options['extension'])) {
                $this->extension = '';
            } else {
                $this->extension = '.' . ltrim($options['extension'], '.');
            }
        }
    }

/**
     * Load a Template by name.
     *
     *     $loader = new Mustache_Loader_FilesystemLoader(dirname(__FILE__).'/views');
     *     $loader->load('admin/dashboard'); // loads "./views/admin/dashboard.mustache";
     *
     * @param string $name
     *
     * @return string Mustache Template source
     */
    public function load($name)
    {
        if (!isset($this->templates[$name])) {
            $this->templates[$name] = $this->loadFile($name);
        }

return $this->templates[$name];
    }

/**
     * Helper function for loading a Mustache file by name.
     *
     * @throws Mustache_Exception_UnknownTemplateException If a template file is not found
     *
     * @param string $name
     *
     * @return string Mustache Template source
     */
    protected function loadFile($name)
    {
        $fileName = $this->getFileName($name);

if ($this->shouldCheckPath() && !file_exists($fileName)) {
            throw new Mustache_Exception_UnknownTemplateException($name);
        }

return file_get_contents($fileName);
    }

/**
     * Helper function for getting a Mustache template file name.
     *
     * @param string $name
     *
     * @return string Template file name
     */
    protected function getFileName($name)
    {
        $fileName = $this->baseDir . '/' . $name;
        if (substr($fileName, 0 - strlen($this->extension)) !== $this->extension) {
            $fileName .= $this->extension;
        }

return $fileName;
    }

/**
     * Only check if baseDir is a directory and requested templates are files if
     * baseDir is using the filesystem stream wrapper.
     *
     * @return bool Whether to check `is_dir` and `file_exists`
     */
    protected function shouldCheckPath()
    {
        return strpos($this->baseDir, '://') === false || strpos($this->baseDir, 'file://') === 0;
    }
}
<?php

/**
 * A Mustache Template cascading loader implementation, which delegates to other
 * Loader instances.
 */
class Mustache_Loader_CascadingLoader implements Mustache_Loader
{
    private $loaders;

/**
     * Construct a CascadingLoader with an array of loaders.
     *
     *     $loader = new Mustache_Loader_CascadingLoader(array(
     *         new Mustache_Loader_InlineLoader(__FILE__, __COMPILER_HALT_OFFSET__),
     *         new Mustache_Loader_FilesystemLoader(__DIR__.'/templates')
     *     ));
     *
     * @param Mustache_Loader[] $loaders
     */
    public function __construct(array $loaders = array())
    {
        $this->loaders = array();
        foreach ($loaders as $loader) {
            $this->addLoader($loader);
        }
    }

/**
     * Add a Loader instance.
     *
     * @param Mustache_Loader $loader
     */
    public function addLoader(Mustache_Loader $loader)
    {
        $this->loaders[] = $loader;
    }

/**
     * Load a Template by name.
     *
     * @throws Mustache_Exception_UnknownTemplateException If a template file is not found
     *
     * @param string $name
     *
     * @return string Mustache Template source
     */
    public function load($name)
    {
        foreach ($this->loaders as $loader) {
            try {
                return $loader->load($name);
            } catch (Mustache_Exception_UnknownTemplateException $e) {
                // do nothing, check the next loader.
            }
        }

throw new Mustache_Exception_UnknownTemplateException($name);
    }
}
<?php

/**
 * A Mustache Template loader for inline templates.
 *
 * With the InlineLoader, templates can be defined at the end of any PHP source
 * file:
 *
 *     $loader  = new Mustache_Loader_InlineLoader(__FILE__, __COMPILER_HALT_OFFSET__);
 *     $hello   = $loader->load('hello');
 *     $goodbye = $loader->load('goodbye');
 *
 *     __halt_compiler();
 *
 *     @@ hello
 *     Hello, {{ planet }}!
 *
 *     @@ goodbye
 *     Goodbye, cruel {{ planet }}
 *
 * Templates are deliniated by lines containing only `@@ name`.
 *
 * The InlineLoader is well-suited to micro-frameworks such as Silex:
 *
 *     $app->register(new MustacheServiceProvider, array(
 *         'mustache.loader' => new Mustache_Loader_InlineLoader(__FILE__, __COMPILER_HALT_OFFSET__)
 *     ));
 *
 *     $app->get('/{name}', function ($name) use ($app) {
 *         return $app['mustache']->render('hello', compact('name'));
 *     })
 *     ->value('name', 'world');
 *
 *     // ...
 *
 *     __halt_compiler();
 *
 *     @@ hello
 *     Hello, {{ name }}!
 */
class Mustache_Loader_InlineLoader implements Mustache_Loader
{
    protected $fileName;
    protected $offset;
    protected $templates;

/**
     * The InlineLoader requires a filename and offset to process templates.
     *
     * The magic constants `__FILE__` and `__COMPILER_HALT_OFFSET__` are usually
     * perfectly suited to the job:
     *
     *     $loader = new Mustache_Loader_InlineLoader(__FILE__, __COMPILER_HALT_OFFSET__);
     *
     * Note that this only works if the loader is instantiated inside the same
     * file as the inline templates. If the templates are located in another
     * file, it would be necessary to manually specify the filename and offset.
     *
     * @param string $fileName The file to parse for inline templates
     * @param int    $offset   A string offset for the start of the templates.
     *                         This usually coincides with the `__halt_compiler`
     *                         call, and the `__COMPILER_HALT_OFFSET__`
     */
    public function __construct($fileName, $offset)
    {
        if (!is_file($fileName)) {
            throw new Mustache_Exception_InvalidArgumentException('InlineLoader expects a valid filename.');
        }

if (!is_int($offset) || $offset < 0) {
            throw new Mustache_Exception_InvalidArgumentException('InlineLoader expects a valid file offset.');
        }

$this->fileName = $fileName;
        $this->offset   = $offset;
    }

if (!array_key_exists($name, $this->templates)) {
            throw new Mustache_Exception_UnknownTemplateException($name);
        }

return $this->templates[$name];
    }

/**
     * Parse and load templates from the end of a source file.
     */
    protected function loadTemplates()
    {
        if ($this->templates === null) {
            $this->templates = array();
            $data = file_get_contents($this->fileName, false, null, $this->offset);
            foreach (preg_split("/^@@(?= [\w\d\.]+$)/m", $data, -1) as $chunk) {
                if (trim($chunk)) {
                    list($name, $content)         = explode("\n", $chunk, 2);
                    $this->templates[trim($name)] = trim($content);
                }
            }
        }
    }
}
<?php

/**
 * Mustache Template mutable Loader interface.
 */
interface Mustache_Loader_MutableLoader
{
    /**
     * Set an associative array of Template sources for this loader.
     *
     * @param array $templates
     */
    public function setTemplates(array $templates);

/**
     * Set a Template source by name.
     *
     * @param string $name
     * @param string $template Mustache Template source
     */
    public function setTemplate($name, $template);
}
<?php

/**
 * Mustache Template production filesystem Loader implementation.
 *
 * A production-ready FilesystemLoader, which doesn't require reading a file if it already exists in the template cache.
 *
 * {@inheritdoc}
 */
class Mustache_Loader_ProductionFilesystemLoader extends Mustache_Loader_FilesystemLoader
{
    private $statProps;

/**
     * Mustache production filesystem Loader constructor.
     *
     * Passing an $options array allows overriding certain Loader options during instantiation:
     *
     *     $options = array(
     *         // The filename extension used for Mustache templates. Defaults to '.mustache'
     *         'extension' => '.ms',
     *         'stat_props' => array('size', 'mtime'),
     *     );
     *
     * Specifying 'stat_props' overrides the stat properties used to invalidate the template cache. By default, this
     * uses 'mtime' and 'size', but this can be set to any of the properties supported by stat():
     *
     *     http://php.net/manual/en/function.stat.php
     *
     * You can also disable filesystem stat entirely:
     *
     *     $options = array('stat_props' => null);
     *
     * But with great power comes great responsibility. Namely, if you disable stat-based cache invalidation,
     * YOU MUST CLEAR THE TEMPLATE CACHE YOURSELF when your templates change. Make it part of your build or deploy
     * process so you don't forget!
     *
     * @throws Mustache_Exception_RuntimeException if $baseDir does not exist.
     *
     * @param string $baseDir Base directory containing Mustache template files.
     * @param array  $options Array of Loader options (default: array())
     */
    public function __construct($baseDir, array $options = array())
    {
        parent::__construct($baseDir, $options);

if (array_key_exists('stat_props', $options)) {
            if (empty($options['stat_props'])) {
                $this->statProps = array();
            } else {
                $this->statProps = $options['stat_props'];
            }
        } else {
            $this->statProps = array('size', 'mtime');
        }
    }

/**
     * Helper function for loading a Mustache file by name.
     *
     * @throws Mustache_Exception_UnknownTemplateException If a template file is not found.
     *
     * @param string $name
     *
     * @return Mustache_Source Mustache Template source
     */
    protected function loadFile($name)
    {
        $fileName = $this->getFileName($name);

if (!file_exists($fileName)) {
            throw new Mustache_Exception_UnknownTemplateException($name);
        }

return new Mustache_Source_FilesystemSource($fileName, $this->statProps);
    }
}
<?php

/**
 * Mustache Template array Loader implementation.
 *
 * An ArrayLoader instance loads Mustache Template source by name from an initial array:
 *
 *     $loader = new ArrayLoader(
 *         'foo' => '{{ bar }}',
 *         'baz' => 'Hey {{ qux }}!'
 *     );
 *
 *     $tpl = $loader->load('foo'); // '{{ bar }}'
 *
 * The ArrayLoader is used internally as a partials loader by Mustache_Engine instance when an array of partials
 * is set. It can also be used as a quick-and-dirty Template loader.
 */
class Mustache_Loader_ArrayLoader implements Mustache_Loader, Mustache_Loader_MutableLoader
{
    private $templates;

/**
     * ArrayLoader constructor.
     *
     * @param array $templates Associative array of Template source (default: array())
     */
    public function __construct(array $templates = array())
    {
        $this->templates = $templates;
    }

/**
     * Load a Template.
     *
     * @throws Mustache_Exception_UnknownTemplateException If a template file is not found
     *
     * @param string $name
     *
     * @return string Mustache Template source
     */
    public function load($name)
    {
        if (!isset($this->templates[$name])) {
            throw new Mustache_Exception_UnknownTemplateException($name);
        }

return $this->templates[$name];
    }

/**
     * Set an associative array of Template sources for this loader.
     *
     * @param array $templates
     */
    public function setTemplates(array $templates)
    {
        $this->templates = $templates;
    }

/**
     * Set a Template source by name.
     *
     * @param string $name
     * @param string $template Mustache Template source
     */
    public function setTemplate($name, $template)
    {
        $this->templates[$name] = $template;
    }
}
<?php

/**
 * Mustache Template string Loader implementation.
 *
 * A StringLoader instance is essentially a noop. It simply passes the 'name' argument straight through:
 *
 *     $loader = new StringLoader;
 *     $tpl = $loader->load('{{ foo }}'); // '{{ foo }}'
 *
 * This is the default Template Loader instance used by Mustache:
 *
 *     $m = new Mustache;
 *     $tpl = $m->loadTemplate('{{ foo }}');
 *     echo $tpl->render(array('foo' => 'bar')); // "bar"
 */
class Mustache_Loader_StringLoader implements Mustache_Loader
{
    /**
     * Load a Template by source.
     *
     * @param string $name Mustache Template source
     *
     * @return string Mustache Template source
     */
    public function load($name)
    {
        return $name;
    }
}
<?php

/**
 * Mustache Parser class.
 *
 * This class is responsible for turning a set of Mustache tokens into a parse tree.
 */
class Mustache_Parser
{
    private $lineNum;
    private $lineTokens;
    private $pragmas;
    private $defaultPragmas = array();

private $pragmaFilters;
    private $pragmaBlocks;

/**
     * Process an array of Mustache tokens and convert them into a parse tree.
     *
     * @param array $tokens Set of Mustache tokens
     *
     * @return array Mustache token parse tree
     */
    public function parse(array $tokens = array())
    {
        $this->lineNum    = -1;
        $this->lineTokens = 0;
        $this->pragmas    = $this->defaultPragmas;

$this->pragmaFilters = isset($this->pragmas[Mustache_Engine::PRAGMA_FILTERS]);
        $this->pragmaBlocks  = isset($this->pragmas[Mustache_Engine::PRAGMA_BLOCKS]);

return $this->buildTree($tokens);
    }

/**
     * Enable pragmas across all templates, regardless of the presence of pragma
     * tags in the individual templates.
     *
     * @internal Users should set global pragmas in Mustache_Engine, not here :)
     *
     * @param string[] $pragmas
     */
    public function setPragmas(array $pragmas)
    {
        $this->pragmas = array();
        foreach ($pragmas as $pragma) {
            $this->enablePragma($pragma);
        }
        $this->defaultPragmas = $this->pragmas;
    }

/**
     * Helper method for recursively building a parse tree.
     *
     * @throws Mustache_Exception_SyntaxException when nesting errors or mismatched section tags are encountered
     *
     * @param array &$tokens Set of Mustache tokens
     * @param array $parent  Parent token (default: null)
     *
     * @return array Mustache Token parse tree
     */
    private function buildTree(array &$tokens, array $parent = null)
    {
        $nodes = array();

while (!empty($tokens)) {
            $token = array_shift($tokens);

if ($token[Mustache_Tokenizer::LINE] === $this->lineNum) {
                $this->lineTokens++;
            } else {
                $this->lineNum    = $token[Mustache_Tokenizer::LINE];
                $this->lineTokens = 0;
            }

if ($this->pragmaFilters && isset($token[Mustache_Tokenizer::NAME])) {
                list($name, $filters) = $this->getNameAndFilters($token[Mustache_Tokenizer::NAME]);
                if (!empty($filters)) {
                    $token[Mustache_Tokenizer::NAME]    = $name;
                    $token[Mustache_Tokenizer::FILTERS] = $filters;
                }
            }

switch ($token[Mustache_Tokenizer::TYPE]) {
                case Mustache_Tokenizer::T_DELIM_CHANGE:
                    $this->checkIfTokenIsAllowedInParent($parent, $token);
                    $this->clearStandaloneLines($nodes, $tokens);
                    break;

case Mustache_Tokenizer::T_SECTION:
                case Mustache_Tokenizer::T_INVERTED:
                    $this->checkIfTokenIsAllowedInParent($parent, $token);
                    $this->clearStandaloneLines($nodes, $tokens);
                    $nodes[] = $this->buildTree($tokens, $token);
                    break;

case Mustache_Tokenizer::T_END_SECTION:
                    if (!isset($parent)) {
                        $msg = sprintf(
                            'Unexpected closing tag: /%s on line %d',
                            $token[Mustache_Tokenizer::NAME],
                            $token[Mustache_Tokenizer::LINE]
                        );
                        throw new Mustache_Exception_SyntaxException($msg, $token);
                    }

if ($token[Mustache_Tokenizer::NAME] !== $parent[Mustache_Tokenizer::NAME]) {
                        $msg = sprintf(
                            'Nesting error: %s (on line %d) vs. %s (on line %d)',
                            $parent[Mustache_Tokenizer::NAME],
                            $parent[Mustache_Tokenizer::LINE],
                            $token[Mustache_Tokenizer::NAME],
                            $token[Mustache_Tokenizer::LINE]
                        );
                        throw new Mustache_Exception_SyntaxException($msg, $token);
                    }

$this->clearStandaloneLines($nodes, $tokens);
                    $parent[Mustache_Tokenizer::END]   = $token[Mustache_Tokenizer::INDEX];
                    $parent[Mustache_Tokenizer::NODES] = $nodes;

return $parent;

case Mustache_Tokenizer::T_PARTIAL:
                    $this->checkIfTokenIsAllowedInParent($parent, $token);
                    //store the whitespace prefix for laters!
                    if ($indent = $this->clearStandaloneLines($nodes, $tokens)) {
                        $token[Mustache_Tokenizer::INDENT] = $indent[Mustache_Tokenizer::VALUE];
                    }
                    $nodes[] = $token;
                    break;

case Mustache_Tokenizer::T_PARENT:
                    $this->checkIfTokenIsAllowedInParent($parent, $token);
                    $nodes[] = $this->buildTree($tokens, $token);
                    break;

case Mustache_Tokenizer::T_BLOCK_VAR:
                    if ($this->pragmaBlocks) {
                        // BLOCKS pragma is enabled, let's do this!
                        if (isset($parent) && $parent[Mustache_Tokenizer::TYPE] === Mustache_Tokenizer::T_PARENT) {
                            $token[Mustache_Tokenizer::TYPE] = Mustache_Tokenizer::T_BLOCK_ARG;
                        }
                        $this->clearStandaloneLines($nodes, $tokens);
                        $nodes[] = $this->buildTree($tokens, $token);
                    } else {
                        // pretend this was just a normal "escaped" token...
                        $token[Mustache_Tokenizer::TYPE] = Mustache_Tokenizer::T_ESCAPED;
                        // TODO: figure out how to figure out if there was a space after this dollar:
                        $token[Mustache_Tokenizer::NAME] = '$' . $token[Mustache_Tokenizer::NAME];
                        $nodes[] = $token;
                    }
                    break;

case Mustache_Tokenizer::T_PRAGMA:
                    $this->enablePragma($token[Mustache_Tokenizer::NAME]);
                    // no break

case Mustache_Tokenizer::T_COMMENT:
                    $this->clearStandaloneLines($nodes, $tokens);
                    $nodes[] = $token;
                    break;

default:
                    $nodes[] = $token;
                    break;
            }
        }

if (isset($parent)) {
            $msg = sprintf(
                'Missing closing tag: %s opened on line %d',
                $parent[Mustache_Tokenizer::NAME],
                $parent[Mustache_Tokenizer::LINE]
            );
            throw new Mustache_Exception_SyntaxException($msg, $parent);
        }

return $nodes;
    }

/**
     * Clear standalone line tokens.
     *
     * Returns a whitespace token for indenting partials, if applicable.
     *
     * @param array $nodes  Parsed nodes
     * @param array $tokens Tokens to be parsed
     *
     * @return array|null Resulting indent token, if any
     */
    private function clearStandaloneLines(array &$nodes, array &$tokens)
    {
        if ($this->lineTokens > 1) {
            // this is the third or later node on this line, so it can't be standalone
            return;
        }

$prev = null;
        if ($this->lineTokens === 1) {
            // this is the second node on this line, so it can't be standalone
            // unless the previous node is whitespace.
            if ($prev = end($nodes)) {
                if (!$this->tokenIsWhitespace($prev)) {
                    return;
                }
            }
        }

if ($next = reset($tokens)) {
            // If we're on a new line, bail.
            if ($next[Mustache_Tokenizer::LINE] !== $this->lineNum) {
                return;
            }

// If the next token isn't whitespace, bail.
            if (!$this->tokenIsWhitespace($next)) {
                return;
            }

if (count($tokens) !== 1) {
                // Unless it's the last token in the template, the next token
                // must end in newline for this to be standalone.
                if (substr($next[Mustache_Tokenizer::VALUE], -1) !== "\n") {
                    return;
                }
            }

// Discard the whitespace suffix
            array_shift($tokens);
        }

if ($prev) {
            // Return the whitespace prefix, if any
            return array_pop($nodes);
        }
    }

/**
     * Check whether token is a whitespace token.
     *
     * True if token type is T_TEXT and value is all whitespace characters.
     *
     * @param array $token
     *
     * @return bool True if token is a whitespace token
     */
    private function tokenIsWhitespace(array $token)
    {
        if ($token[Mustache_Tokenizer::TYPE] === Mustache_Tokenizer::T_TEXT) {
            return preg_match('/^\s*$/', $token[Mustache_Tokenizer::VALUE]);
        }

return false;
    }

/**
     * Check whether a token is allowed inside a parent tag.
     *
     * @throws Mustache_Exception_SyntaxException if an invalid token is found inside a parent tag
     *
     * @param array|null $parent
     * @param array      $token
     */
    private function checkIfTokenIsAllowedInParent($parent, array $token)
    {
        if (isset($parent) && $parent[Mustache_Tokenizer::TYPE] === Mustache_Tokenizer::T_PARENT) {
            throw new Mustache_Exception_SyntaxException('Illegal content in < parent tag', $token);
        }
    }

/**
     * Split a tag name into name and filters.
     *
     * @param string $name
     *
     * @return array [Tag name, Array of filters]
     */
    private function getNameAndFilters($name)
    {
        $filters = array_map('trim', explode('|', $name));
        $name    = array_shift($filters);

return array($name, $filters);
    }

/**
     * Enable a pragma.
     *
     * @param string $name
     */
    private function enablePragma($name)
    {
        $this->pragmas[$name] = true;

switch ($name) {
            case Mustache_Engine::PRAGMA_BLOCKS:
                $this->pragmaBlocks = true;
                break;

case Mustache_Engine::PRAGMA_FILTERS:
                $this->pragmaFilters = true;
                break;
        }
    }
}
<?php

/**
 * Invalid argument exception.
 */
class Mustache_Exception_InvalidArgumentException extends InvalidArgumentException implements Mustache_Exception
{
    // This space intentionally left blank.
}
<?php

/**
 * Logic exception.
 */
class Mustache_Exception_LogicException extends LogicException implements Mustache_Exception
{
    // This space intentionally left blank.
}
<?php

/**
 * Mustache syntax exception.
 */
class Mustache_Exception_SyntaxException extends LogicException implements Mustache_Exception
{
    protected $token;

/**
     * @param string    $msg
     * @param array     $token
     * @param Exception $previous
     */
    public function __construct($msg, array $token, Exception $previous = null)
    {
        $this->token = $token;
        if (version_compare(PHP_VERSION, '5.3.0', '>=')) {
            parent::__construct($msg, 0, $previous);
        } else {
            parent::__construct($msg); // @codeCoverageIgnore
        }
    }

/**
     * @return array
     */
    public function getToken()
    {
        return $this->token;
    }
}
<?php

/**
 * Unknown template exception.
 */
class Mustache_Exception_UnknownTemplateException extends InvalidArgumentException implements Mustache_Exception
{
    protected $templateName;

/**
     * @param string    $templateName
     * @param Exception $previous
     */
    public function __construct($templateName, Exception $previous = null)
    {
        $this->templateName = $templateName;
        $message = sprintf('Unknown template: %s', $templateName);
        if (version_compare(PHP_VERSION, '5.3.0', '>=')) {
            parent::__construct($message, 0, $previous);
        } else {
            parent::__construct($message); // @codeCoverageIgnore
        }
    }

public function getTemplateName()
    {
        return $this->templateName;
    }
}
<?php

/**
 * Unknown filter exception.
 */
class Mustache_Exception_UnknownFilterException extends UnexpectedValueException implements Mustache_Exception
{
    protected $filterName;

/**
     * @param string    $filterName
     * @param Exception $previous
     */
    public function __construct($filterName, Exception $previous = null)
    {
        $this->filterName = $filterName;
        $message = sprintf('Unknown filter: %s', $filterName);
        if (version_compare(PHP_VERSION, '5.3.0', '>=')) {
            parent::__construct($message, 0, $previous);
        } else {
            parent::__construct($message); // @codeCoverageIgnore
        }
    }

public function getFilterName()
    {
        return $this->filterName;
    }
}
<?php

/**
 * Unknown helper exception.
 */
class Mustache_Exception_UnknownHelperException extends InvalidArgumentException implements Mustache_Exception
{
    protected $helperName;

/**
     * @param string    $helperName
     * @param Exception $previous
     */
    public function __construct($helperName, Exception $previous = null)
    {
        $this->helperName = $helperName;
        $message = sprintf('Unknown helper: %s', $helperName);
        if (version_compare(PHP_VERSION, '5.3.0', '>=')) {
            parent::__construct($message, 0, $previous);
        } else {
            parent::__construct($message); // @codeCoverageIgnore
        }
    }

public function getHelperName()
    {
        return $this->helperName;
    }
}
<?php

/**
 * Runtime exception.
 */
class Mustache_Exception_RuntimeException extends RuntimeException implements Mustache_Exception
{
    // This space intentionally left blank.
}
<?php

/**
 * Abstract Mustache Cache class.
 *
 * Provides logging support to child implementations.
 *
 * @abstract
 */
abstract class Mustache_Cache_AbstractCache implements Mustache_Cache
{
    private $logger = null;

/**
     * Get the current logger instance.
     *
     * @return Mustache_Logger|Psr\Log\LoggerInterface
     */
    public function getLogger()
    {
        return $this->logger;
    }

/**
     * Set a logger instance.
     *
     * @param Mustache_Logger|Psr\Log\LoggerInterface $logger
     */
    public function setLogger($logger = null)
    {
        if ($logger !== null && !($logger instanceof Mustache_Logger || is_a($logger, 'Psr\\Log\\LoggerInterface'))) {
            throw new Mustache_Exception_InvalidArgumentException('Expected an instance of Mustache_Logger or Psr\\Log\\LoggerInterface.');
        }

$this->logger = $logger;
    }

/**
     * Add a log record if logging is enabled.
     *
     * @param string $level   The logging level
     * @param string $message The log message
     * @param array  $context The log context
     */
    protected function log($level, $message, array $context = array())
    {
        if (isset($this->logger)) {
            $this->logger->log($level, $message, $context);
        }
    }
}
<?php

/**
 * Mustache Cache in-memory implementation.
 *
 * The in-memory cache is used for uncached lambda section templates. It's also useful during development, but is not
 * recommended for production use.
 */
class Mustache_Cache_NoopCache extends Mustache_Cache_AbstractCache
{
    /**
     * Loads nothing. Move along.
     *
     * @param string $key
     *
     * @return bool
     */
    public function load($key)
    {
        return false;
    }

/**
     * Loads the compiled Mustache Template class without caching.
     *
     * @param string $key
     * @param string $value
     */
    public function cache($key, $value)
    {
        $this->log(
            Mustache_Logger::WARNING,
            'Template cache disabled, evaluating "{className}" class at runtime',
            array('className' => $key)
        );
        eval('?>' . $value);
    }
}
<?php

/**
 * Mustache Cache filesystem implementation.
 *
 * A FilesystemCache instance caches Mustache Template classes from the filesystem by name:
 *
 *     $cache = new Mustache_Cache_FilesystemCache(dirname(__FILE__).'/cache');
 *     $cache->cache($className, $compiledSource);
 *
 * The FilesystemCache benefits from any opcode caching that may be setup in your environment. So do that, k?
 */
class Mustache_Cache_FilesystemCache extends Mustache_Cache_AbstractCache
{
    private $baseDir;
    private $fileMode;

/**
     * Filesystem cache constructor.
     *
     * @param string $baseDir  Directory for compiled templates
     * @param int    $fileMode Override default permissions for cache files. Defaults to using the system-defined umask
     */
    public function __construct($baseDir, $fileMode = null)
    {
        $this->baseDir = $baseDir;
        $this->fileMode = $fileMode;
    }

/**
     * Load the class from cache using `require_once`.
     *
     * @param string $key
     *
     * @return bool
     */
    public function load($key)
    {
        $fileName = $this->getCacheFilename($key);
        if (!is_file($fileName)) {
            return false;
        }

require_once $fileName;

return true;
    }

/**
     * Cache and load the compiled class.
     *
     * @param string $key
     * @param string $value
     */
    public function cache($key, $value)
    {
        $fileName = $this->getCacheFilename($key);

$this->log(
            Mustache_Logger::DEBUG,
            'Writing to template cache: "{fileName}"',
            array('fileName' => $fileName)
        );

$this->writeFile($fileName, $value);
        $this->load($key);
    }

/**
     * Build the cache filename.
     * Subclasses should override for custom cache directory structures.
     *
     * @param string $name
     *
     * @return string
     */
    protected function getCacheFilename($name)
    {
        return sprintf('%s/%s.php', $this->baseDir, $name);
    }

/**
     * Create cache directory.
     *
     * @throws Mustache_Exception_RuntimeException If unable to create directory
     *
     * @param string $fileName
     *
     * @return string
     */
    private function buildDirectoryForFilename($fileName)
    {
        $dirName = dirname($fileName);
        if (!is_dir($dirName)) {
            $this->log(
                Mustache_Logger::INFO,
                'Creating Mustache template cache directory: "{dirName}"',
                array('dirName' => $dirName)
            );

@mkdir($dirName, 0777, true);
            // @codeCoverageIgnoreStart
            if (!is_dir($dirName)) {
                throw new Mustache_Exception_RuntimeException(sprintf('Failed to create cache directory "%s".', $dirName));
            }
            // @codeCoverageIgnoreEnd
        }

return $dirName;
    }

/**
     * Write cache file.
     *
     * @throws Mustache_Exception_RuntimeException If unable to write file
     *
     * @param string $fileName
     * @param string $value
     */
    private function writeFile($fileName, $value)
    {
        $dirName = $this->buildDirectoryForFilename($fileName);

$this->log(
            Mustache_Logger::DEBUG,
            'Caching compiled template to "{fileName}"',
            array('fileName' => $fileName)
        );

$tempFile = tempnam($dirName, basename($fileName));
        if (false !== @file_put_contents($tempFile, $value)) {
            if (@rename($tempFile, $fileName)) {
                $mode = isset($this->fileMode) ? $this->fileMode : (0666 & ~umask());
                @chmod($fileName, $mode);

return;
            }

// @codeCoverageIgnoreStart
            $this->log(
                Mustache_Logger::ERROR,
                'Unable to rename Mustache temp cache file: "{tempName}" -> "{fileName}"',
                array('tempName' => $tempFile, 'fileName' => $fileName)
            );
            // @codeCoverageIgnoreEnd
        }

// @codeCoverageIgnoreStart
        throw new Mustache_Exception_RuntimeException(sprintf('Failed to write cache file "%s".', $fileName));
        // @codeCoverageIgnoreEnd
    }
}
<?php

/**
 * Mustache Cache interface.
 *
 * Interface for caching and loading Mustache_Template classes
 * generated by the Mustache_Compiler.
 */
interface Mustache_Cache
{
    /**
     * Load a compiled Mustache_Template class from cache.
     *
     * @param string $key
     *
     * @return bool indicates successfully class load
     */
    public function load($key);

/**
     * Cache and load a compiled Mustache_Template class.
     *
     * @param string $key
     * @param string $value
     */
    public function cache($key, $value);

/**
     * Set a logger instance.
     *
     * @param Mustache_Logger|Psr\Log\LoggerInterface $logger
     */
    public function setLogger($logger = null);
}
<?php

/**
 * Mustache template Source interface.
 */
interface Mustache_Source
{
    /**
     * Get the Source key (used to generate the compiled class name).
     *
     * This must return a distinct key for each template source. For example, an
     * MD5 hash of the template contents would probably do the trick. The
     * ProductionFilesystemLoader uses mtime and file path. If your production
     * source directory is under version control, you could use the current Git
     * rev and the file path...
     *
     * @throws RuntimeException when a source file cannot be read
     *
     * @return string
     */
    public function getKey();

/**
     * Get the template Source.
     *
     * @throws RuntimeException when a source file cannot be read
     *
     * @return string
     */
    public function getSource();
}
<?php

/**
 * A Mustache Stream Logger.
 *
 * The Stream Logger wraps a file resource instance (such as a stream) or a
 * stream URL. All log messages over the threshold level will be appended to
 * this stream.
 *
 * Hint: Try `php://stderr` for your stream URL.
 */
class Mustache_Logger_StreamLogger extends Mustache_Logger_AbstractLogger
{
    protected static $levels = array(
        self::DEBUG     => 100,
        self::INFO      => 200,
        self::NOTICE    => 250,
        self::WARNING   => 300,
        self::ERROR     => 400,
        self::CRITICAL  => 500,
        self::ALERT     => 550,
        self::EMERGENCY => 600,
    );

protected $level;
    protected $stream = null;
    protected $url    = null;

/**
     * @throws InvalidArgumentException if the logging level is unknown
     *
     * @param resource|string $stream Resource instance or URL
     * @param int             $level  The minimum logging level at which this handler will be triggered
     */
    public function __construct($stream, $level = Mustache_Logger::ERROR)
    {
        $this->setLevel($level);

if (is_resource($stream)) {
            $this->stream = $stream;
        } else {
            $this->url = $stream;
        }
    }

/**
     * Close stream resources.
     */
    public function __destruct()
    {
        if (is_resource($this->stream)) {
            fclose($this->stream);
        }
    }

/**
     * Set the minimum logging level.
     *
     * @throws Mustache_Exception_InvalidArgumentException if the logging level is unknown
     *
     * @param int $level The minimum logging level which will be written
     */
    public function setLevel($level)
    {
        if (!array_key_exists($level, self::$levels)) {
            throw new Mustache_Exception_InvalidArgumentException(sprintf('Unexpected logging level: %s', $level));
        }

$this->level = $level;
    }

/**
     * Get the current minimum logging level.
     *
     * @return int
     */
    public function getLevel()
    {
        return $this->level;
    }

/**
     * Logs with an arbitrary level.
     *
     * @throws Mustache_Exception_InvalidArgumentException if the logging level is unknown
     *
     * @param mixed  $level
     * @param string $message
     * @param array  $context
     */
    public function log($level, $message, array $context = array())
    {
        if (!array_key_exists($level, self::$levels)) {
            throw new Mustache_Exception_InvalidArgumentException(sprintf('Unexpected logging level: %s', $level));
        }

if (self::$levels[$level] >= self::$levels[$this->level]) {
            $this->writeLog($level, $message, $context);
        }
    }

/**
     * Write a record to the log.
     *
     * @throws Mustache_Exception_LogicException   If neither a stream resource nor url is present
     * @throws Mustache_Exception_RuntimeException If the stream url cannot be opened
     *
     * @param int    $level   The logging level
     * @param string $message The log message
     * @param array  $context The log context
     */
    protected function writeLog($level, $message, array $context = array())
    {
        if (!is_resource($this->stream)) {
            if (!isset($this->url)) {
                throw new Mustache_Exception_LogicException('Missing stream url, the stream can not be opened. This may be caused by a premature call to close().');
            }

$this->stream = fopen($this->url, 'a');
            if (!is_resource($this->stream)) {
                // @codeCoverageIgnoreStart
                throw new Mustache_Exception_RuntimeException(sprintf('The stream or file "%s" could not be opened.', $this->url));
                // @codeCoverageIgnoreEnd
            }
        }

fwrite($this->stream, self::formatLine($level, $message, $context));
    }

/**
     * Gets the name of the logging level.
     *
     * @throws InvalidArgumentException if the logging level is unknown
     *
     * @param int $level
     *
     * @return string
     */
    protected static function getLevelName($level)
    {
        return strtoupper($level);
    }

/**
     * Format a log line for output.
     *
     * @param int    $level   The logging level
     * @param string $message The log message
     * @param array  $context The log context
     *
     * @return string
     */
    protected static function formatLine($level, $message, array $context = array())
    {
        return sprintf(
            "%s: %s\n",
            self::getLevelName($level),
            self::interpolateMessage($message, $context)
        );
    }

/**
     * Interpolate context values into the message placeholders.
     *
     * @param string $message
     * @param array  $context
     *
     * @return string
     */
    protected static function interpolateMessage($message, array $context = array())
    {
        if (strpos($message, '{') === false) {
            return $message;
        }

// build a replacement array with braces around the context keys
        $replace = array();
        foreach ($context as $key => $val) {
            $replace['{' . $key . '}'] = $val;
        }

// interpolate replacement values into the the message and return
        return strtr($message, $replace);
    }
}
<?php

/**
 * This is a simple Logger implementation that other Loggers can inherit from.
 *
 * This is identical to the Psr\Log\AbstractLogger.
 *
 * It simply delegates all log-level-specific methods to the `log` method to
 * reduce boilerplate code that a simple Logger that does the same thing with
 * messages regardless of the error level has to implement.
 */
abstract class Mustache_Logger_AbstractLogger implements Mustache_Logger
{
    /**
     * System is unusable.
     *
     * @param string $message
     * @param array  $context
     */
    public function emergency($message, array $context = array())
    {
        $this->log(Mustache_Logger::EMERGENCY, $message, $context);
    }

/**
     * Normal but significant events.
     *
     * @param string $message
     * @param array  $context
     */
    public function notice($message, array $context = array())
    {
        $this->log(Mustache_Logger::NOTICE, $message, $context);
    }

/**
     * Interesting events.
     *
     * Example: User logs in, SQL logs.
     *
     * @param string $message
     * @param array  $context
     */
    public function info($message, array $context = array())
    {
        $this->log(Mustache_Logger::INFO, $message, $context);
    }

/**
     * Detailed debug information.
     *
     * @param string $message
     * @param array  $context
     */
    public function debug($message, array $context = array())
    {
        $this->log(Mustache_Logger::DEBUG, $message, $context);
    }
}
<?php

/**
 * Mustache Lambda Helper.
 *
 * Passed as the second argument to section lambdas (higher order sections),
 * giving them access to a `render` method for rendering a string with the
 * current context.
 */
class Mustache_LambdaHelper
{
    private $mustache;
    private $context;
    private $delims;

/**
     * Mustache Lambda Helper constructor.
     *
     * @param Mustache_Engine  $mustache Mustache engine instance
     * @param Mustache_Context $context  Rendering context
     * @param string           $delims   Optional custom delimiters, in the format `{{= <% %> =}}`. (default: null)
     */
    public function __construct(Mustache_Engine $mustache, Mustache_Context $context, $delims = null)
    {
        $this->mustache = $mustache;
        $this->context  = $context;
        $this->delims   = $delims;
    }

/**
     * Render a string as a Mustache template with the current rendering context.
     *
     * @param string $string
     *
     * @return string Rendered template
     */
    public function render($string)
    {
        return $this->mustache
            ->loadLambda((string) $string, $this->delims)
            ->renderInternal($this->context);
    }

/**
     * Render a string as a Mustache template with the current rendering context.
     *
     * @param string $string
     *
     * @return string Rendered template
     */
    public function __invoke($string)
    {
        return $this->render($string);
    }

/**
     * Get a Lambda Helper with custom delimiters.
     *
     * @param string $delims Custom delimiters, in the format `{{= <% %> =}}`
     *
     * @return Mustache_LambdaHelper
     */
    public function withDelimiters($delims)
    {
        return new self($this->mustache, $this->context, $delims);
    }
}
<?php

/**
 * A collection of helpers for a Mustache instance.
 */
class Mustache_HelperCollection
{
    private $helpers = array();

/**
     * Helper Collection constructor.
     *
     * Optionally accepts an array (or Traversable) of `$name => $helper` pairs.
     *
     * @throws Mustache_Exception_InvalidArgumentException if the $helpers argument isn't an array or Traversable
     *
     * @param array|Traversable $helpers (default: null)
     */
    public function __construct($helpers = null)
    {
        if ($helpers === null) {
            return;
        }

if (!is_array($helpers) && !$helpers instanceof Traversable) {
            throw new Mustache_Exception_InvalidArgumentException('HelperCollection constructor expects an array of helpers');
        }

foreach ($helpers as $name => $helper) {
            $this->add($name, $helper);
        }
    }

/**
     * Magic mutator.
     *
     * @see Mustache_HelperCollection::add
     *
     * @param string $name
     * @param mixed  $helper
     */
    public function __set($name, $helper)
    {
        $this->add($name, $helper);
    }

/**
     * Add a helper to this collection.
     *
     * @param string $name
     * @param mixed  $helper
     */
    public function add($name, $helper)
    {
        $this->helpers[$name] = $helper;
    }

/**
     * Magic accessor.
     *
     * @see Mustache_HelperCollection::get
     *
     * @param string $name
     *
     * @return mixed Helper
     */
    public function __get($name)
    {
        return $this->get($name);
    }

/**
     * Get a helper by name.
     *
     * @throws Mustache_Exception_UnknownHelperException If helper does not exist
     *
     * @param string $name
     *
     * @return mixed Helper
     */
    public function get($name)
    {
        if (!$this->has($name)) {
            throw new Mustache_Exception_UnknownHelperException($name);
        }

return $this->helpers[$name];
    }

/**
     * Magic isset().
     *
     * @see Mustache_HelperCollection::has
     *
     * @param string $name
     *
     * @return bool True if helper is present
     */
    public function __isset($name)
    {
        return $this->has($name);
    }

/**
     * Check whether a given helper is present in the collection.
     *
     * @param string $name
     *
     * @return bool True if helper is present
     */
    public function has($name)
    {
        return array_key_exists($name, $this->helpers);
    }

/**
     * Magic unset().
     *
     * @see Mustache_HelperCollection::remove
     *
     * @param string $name
     */
    public function __unset($name)
    {
        $this->remove($name);
    }

/**
     * Check whether a given helper is present in the collection.
     *
     * @throws Mustache_Exception_UnknownHelperException if the requested helper is not present
     *
     * @param string $name
     */
    public function remove($name)
    {
        if (!$this->has($name)) {
            throw new Mustache_Exception_UnknownHelperException($name);
        }

unset($this->helpers[$name]);
    }

/**
     * Clear the helper collection.
     *
     * Removes all helpers from this collection
     */
    public function clear()
    {
        $this->helpers = array();
    }

/**
     * Check whether the helper collection is empty.
     *
     * @return bool True if the collection is empty
     */
    public function isEmpty()
    {
        return empty($this->helpers);
    }
}
<?php

/**
 * Abstract Mustache Template class.
 *
 * @abstract
 */
abstract class Mustache_Template
{
    /**
     * @var Mustache_Engine
     */
    protected $mustache;

/**
     * @var bool
     */
    protected $strictCallables = false;

/**
     * Mustache Template constructor.
     *
     * @param Mustache_Engine $mustache
     */
    public function __construct(Mustache_Engine $mustache)
    {
        $this->mustache = $mustache;
    }

/**
     * Mustache Template instances can be treated as a function and rendered by simply calling them.
     *
     *     $m = new Mustache_Engine;
     *     $tpl = $m->loadTemplate('Hello, {{ name }}!');
     *     echo $tpl(array('name' => 'World')); // "Hello, World!"
     *
     * @see Mustache_Template::render
     *
     * @param mixed $context Array or object rendering context (default: array())
     *
     * @return string Rendered template
     */
    public function __invoke($context = array())
    {
        return $this->render($context);
    }

/**
     * Render this template given the rendering context.
     *
     * @param mixed $context Array or object rendering context (default: array())
     *
     * @return string Rendered template
     */
    public function render($context = array())
    {
        return $this->renderInternal(
            $this->prepareContextStack($context)
        );
    }

/**
     * Internal rendering method implemented by Mustache Template concrete subclasses.
     *
     * This is where the magic happens :)
     *
     * NOTE: This method is not part of the Mustache.php public API.
     *
     * @param Mustache_Context $context
     * @param string           $indent  (default: '')
     *
     * @return string Rendered template
     */
    abstract public function renderInternal(Mustache_Context $context, $indent = '');

/**
     * Tests whether a value should be iterated over (e.g. in a section context).
     *
     * In most languages there are two distinct array types: list and hash (or whatever you want to call them). Lists
     * should be iterated, hashes should be treated as objects. Mustache follows this paradigm for Ruby, Javascript,
     * Java, Python, etc.
     *
     * PHP, however, treats lists and hashes as one primitive type: array. So Mustache.php needs a way to distinguish
     * between between a list of things (numeric, normalized array) and a set of variables to be used as section context
     * (associative array). In other words, this will be iterated over:
     *
     *     $items = array(
     *         array('name' => 'foo'),
     *         array('name' => 'bar'),
     *         array('name' => 'baz'),
     *     );
     *
     * ... but this will be used as a section context block:
     *
     *     $items = array(
     *         1        => array('name' => 'foo'),
     *         'banana' => array('name' => 'bar'),
     *         42       => array('name' => 'baz'),
     *     );
     *
     * @param mixed $value
     *
     * @return bool True if the value is 'iterable'
     */
    protected function isIterable($value)
    {
        switch (gettype($value)) {
            case 'object':
                return $value instanceof Traversable;

case 'array':
                $i = 0;
                foreach ($value as $k => $v) {
                    if ($k !== $i++) {
                        return false;
                    }
                }

return true;

default:
                return false;
        }
    }

/**
     * Helper method to prepare the Context stack.
     *
     * Adds the Mustache HelperCollection to the stack's top context frame if helpers are present.
     *
     * @param mixed $context Optional first context frame (default: null)
     *
     * @return Mustache_Context
     */
    protected function prepareContextStack($context = null)
    {
        $stack = new Mustache_Context();

$helpers = $this->mustache->getHelpers();
        if (!$helpers->isEmpty()) {
            $stack->push($helpers);
        }

if (!empty($context)) {
            $stack->push($context);
        }

return $stack;
    }

/**
     * Resolve a context value.
     *
     * Invoke the value if it is callable, otherwise return the value.
     *
     * @param mixed            $value
     * @param Mustache_Context $context
     *
     * @return string
     */
    protected function resolveValue($value, Mustache_Context $context)
    {
        if (($this->strictCallables ? is_object($value) : !is_string($value)) && is_callable($value)) {
            return $this->mustache
                ->loadLambda((string) call_user_func($value))
                ->renderInternal($context);
        }

return $value;
    }
}
<?php

/**
 * Mustache class autoloader.
 */
class Mustache_Autoloader
{
    private $baseDir;

/**
     * An array where the key is the baseDir and the key is an instance of this
     * class.
     *
     * @var array
     */
    private static $instances;

/**
     * Autoloader constructor.
     *
     * @param string $baseDir Mustache library base directory (default: dirname(__FILE__).'/..')
     */
    public function __construct($baseDir = null)
    {
        if ($baseDir === null) {
            $baseDir = dirname(__FILE__) . '/..';
        }

// realpath doesn't always work, for example, with stream URIs
        $realDir = realpath($baseDir);
        if (is_dir($realDir)) {
            $this->baseDir = $realDir;
        } else {
            $this->baseDir = $baseDir;
        }
    }

/**
     * Register a new instance as an SPL autoloader.
     *
     * @param string $baseDir Mustache library base directory (default: dirname(__FILE__).'/..')
     *
     * @return Mustache_Autoloader Registered Autoloader instance
     */
    public static function register($baseDir = null)
    {
        $key = $baseDir ? $baseDir : 0;

if (!isset(self::$instances[$key])) {
            self::$instances[$key] = new self($baseDir);
        }

$loader = self::$instances[$key];
        spl_autoload_register(array($loader, 'autoload'));

return $loader;
    }

/**
     * Autoload Mustache classes.
     *
     * @param string $class
     */
    public function autoload($class)
    {
        if ($class[0] === '\\') {
            $class = substr($class, 1);
        }

if (strpos($class, 'Mustache') !== 0) {
            return;
        }

$file = sprintf('%s/%s.php', $this->baseDir, str_replace('_', '/', $class));
        if (is_file($file)) {
            require $file;
        }
    }
}
<?php

/**
 * Mustache template Filesystem Source.
 *
 * This template Source uses stat() to generate the Source key, so that using
 * pre-compiled templates doesn't require hitting the disk to read the source.
 * It is more suitable for production use, and is used by default in the
 * ProductionFilesystemLoader.
 */
class Mustache_Source_FilesystemSource implements Mustache_Source
{
    private $fileName;
    private $statProps;
    private $stat;

/**
     * Filesystem Source constructor.
     *
     * @param string $fileName
     * @param array  $statProps
     */
    public function __construct($fileName, array $statProps)
    {
        $this->fileName = $fileName;
        $this->statProps = $statProps;
    }

/**
     * Get the Source key (used to generate the compiled class name).
     *
     * @throws Mustache_Exception_RuntimeException when a source file cannot be read
     *
     * @return string
     */
    public function getKey()
    {
        $chunks = array(
            'fileName' => $this->fileName,
        );

if (!empty($this->statProps)) {
            if (!isset($this->stat)) {
                $this->stat = @stat($this->fileName);
            }

if ($this->stat === false) {
                throw new Mustache_Exception_RuntimeException(sprintf('Failed to read source file "%s".', $this->fileName));
            }

foreach ($this->statProps as $prop) {
                $chunks[$prop] = $this->stat[$prop];
            }
        }

return json_encode($chunks);
    }

/**
     * Get the template Source.
     *
     * @return string
     */
    public function getSource()
    {
        return file_get_contents($this->fileName);
    }
}
<?php

/**
 * A Mustache Exception interface.
 */
interface Mustache_Exception
{
    // This space intentionally left blank.
}
<?php

/**
 * Mustache Tokenizer class.
 *
 * This class is responsible for turning raw template source into a set of Mustache tokens.
 */
class Mustache_Tokenizer
{
    // Finite state machine states
    const IN_TEXT     = 0;
    const IN_TAG_TYPE = 1;
    const IN_TAG      = 2;

// Token types
    const T_SECTION      = '#';
    const T_INVERTED     = '^';
    const T_END_SECTION  = '/';
    const T_COMMENT      = '!';
    const T_PARTIAL      = '>';
    const T_PARENT       = '<';
    const T_DELIM_CHANGE = '=';
    const T_ESCAPED      = '_v';
    const T_UNESCAPED    = '{';
    const T_UNESCAPED_2  = '&';
    const T_TEXT         = '_t';
    const T_PRAGMA       = '%';
    const T_BLOCK_VAR    = '$';
    const T_BLOCK_ARG    = '$arg';

// Valid token types
    private static $tagTypes = array(
        self::T_SECTION      => true,
        self::T_INVERTED     => true,
        self::T_END_SECTION  => true,
        self::T_COMMENT      => true,
        self::T_PARTIAL      => true,
        self::T_PARENT       => true,
        self::T_DELIM_CHANGE => true,
        self::T_ESCAPED      => true,
        self::T_UNESCAPED    => true,
        self::T_UNESCAPED_2  => true,
        self::T_PRAGMA       => true,
        self::T_BLOCK_VAR    => true,
    );

// Token properties
    const TYPE    = 'type';
    const NAME    = 'name';
    const OTAG    = 'otag';
    const CTAG    = 'ctag';
    const LINE    = 'line';
    const INDEX   = 'index';
    const END     = 'end';
    const INDENT  = 'indent';
    const NODES   = 'nodes';
    const VALUE   = 'value';
    const FILTERS = 'filters';

private $state;
    private $tagType;
    private $buffer;
    private $tokens;
    private $seenTag;
    private $line;

private $otag;
    private $otagChar;
    private $otagLen;

private $ctag;
    private $ctagChar;
    private $ctagLen;

/**
     * Scan and tokenize template source.
     *
     * @throws Mustache_Exception_SyntaxException when mismatched section tags are encountered
     * @throws Mustache_Exception_InvalidArgumentException when $delimiters string is invalid
     *
     * @param string $text       Mustache template source to tokenize
     * @param string $delimiters Optionally, pass initial opening and closing delimiters (default: empty string)
     *
     * @return array Set of Mustache tokens
     */
    public function scan($text, $delimiters = '')
    {
        // Setting mbstring.func_overload makes things *really* slow.
        // Let's do everyone a favor and scan this string as ASCII instead.
        //
        // The INI directive was removed in PHP 8.0 so we don't need to check there (and can drop it
        // when we remove support for older versions of PHP).
        //
        // @codeCoverageIgnoreStart
        $encoding = null;
        if (version_compare(PHP_VERSION, '8.0.0', '<')) {
            if (function_exists('mb_internal_encoding') && ini_get('mbstring.func_overload') & 2) {
                $encoding = mb_internal_encoding();
                mb_internal_encoding('ASCII');
            }
        }
        // @codeCoverageIgnoreEnd

$this->reset();

if (is_string($delimiters) && $delimiters = trim($delimiters)) {
            $this->setDelimiters($delimiters);
        }

$len = strlen($text);
        for ($i = 0; $i < $len; $i++) {
            switch ($this->state) {
                case self::IN_TEXT:
                    $char = $text[$i];
                    // Test whether it's time to change tags.
                    if ($char === $this->otagChar && substr($text, $i, $this->otagLen) === $this->otag) {
                        $i--;
                        $this->flushBuffer();
                        $this->state = self::IN_TAG_TYPE;
                    } else {
                        $this->buffer .= $char;
                        if ($char === "\n") {
                            $this->flushBuffer();
                            $this->line++;
                        }
                    }
                    break;

case self::IN_TAG_TYPE:
                    $i += $this->otagLen - 1;
                    $char = $text[$i + 1];
                    if (isset(self::$tagTypes[$char])) {
                        $tag = $char;
                        $this->tagType = $tag;
                    } else {
                        $tag = null;
                        $this->tagType = self::T_ESCAPED;
                    }

if ($this->tagType === self::T_DELIM_CHANGE) {
                        $i = $this->changeDelimiters($text, $i);
                        $this->state = self::IN_TEXT;
                    } elseif ($this->tagType === self::T_PRAGMA) {
                        $i = $this->addPragma($text, $i);
                        $this->state = self::IN_TEXT;
                    } else {
                        if ($tag !== null) {
                            $i++;
                        }
                        $this->state = self::IN_TAG;
                    }
                    $this->seenTag = $i;
                    break;

default:
                    $char = $text[$i];
                    // Test whether it's time to change tags.
                    if ($char === $this->ctagChar && substr($text, $i, $this->ctagLen) === $this->ctag) {
                        $token = array(
                            self::TYPE  => $this->tagType,
                            self::NAME  => trim($this->buffer),
                            self::OTAG  => $this->otag,
                            self::CTAG  => $this->ctag,
                            self::LINE  => $this->line,
                            self::INDEX => ($this->tagType === self::T_END_SECTION) ? $this->seenTag - $this->otagLen : $i + $this->ctagLen,
                        );

if ($this->tagType === self::T_UNESCAPED) {
                            // Clean up `{{{ tripleStache }}}` style tokens.
                            if ($this->ctag === '}}') {
                                if (($i + 2 < $len) && $text[$i + 2] === '}') {
                                    $i++;
                                } else {
                                    $msg = sprintf(
                                        'Mismatched tag delimiters: %s on line %d',
                                        $token[self::NAME],
                                        $token[self::LINE]
                                    );

throw new Mustache_Exception_SyntaxException($msg, $token);
                                }
                            } else {
                                $lastName = $token[self::NAME];
                                if (substr($lastName, -1) === '}') {
                                    $token[self::NAME] = trim(substr($lastName, 0, -1));
                                } else {
                                    $msg = sprintf(
                                        'Mismatched tag delimiters: %s on line %d',
                                        $token[self::NAME],
                                        $token[self::LINE]
                                    );

throw new Mustache_Exception_SyntaxException($msg, $token);
                                }
                            }
                        }

$this->buffer = '';
                        $i += $this->ctagLen - 1;
                        $this->state = self::IN_TEXT;
                        $this->tokens[] = $token;
                    } else {
                        $this->buffer .= $char;
                    }
                    break;
            }
        }

$this->flushBuffer();

// Restore the user's encoding...
        // @codeCoverageIgnoreStart
        if ($encoding) {
            mb_internal_encoding($encoding);
        }
        // @codeCoverageIgnoreEnd

return $this->tokens;
    }

/**
     * Helper function to reset tokenizer internal state.
     */
    private function reset()
    {
        $this->state    = self::IN_TEXT;
        $this->tagType  = null;
        $this->buffer   = '';
        $this->tokens   = array();
        $this->seenTag  = false;
        $this->line     = 0;

$this->otag     = '{{';
        $this->otagChar = '{';
        $this->otagLen  = 2;

$this->ctag     = '}}';
        $this->ctagChar = '}';
        $this->ctagLen  = 2;
    }

/**
     * Flush the current buffer to a token.
     */
    private function flushBuffer()
    {
        if (strlen($this->buffer) > 0) {
            $this->tokens[] = array(
                self::TYPE  => self::T_TEXT,
                self::LINE  => $this->line,
                self::VALUE => $this->buffer,
            );
            $this->buffer   = '';
        }
    }

/**
     * Change the current Mustache delimiters. Set new `otag` and `ctag` values.
     *
     * @throws Mustache_Exception_SyntaxException when delimiter string is invalid
     *
     * @param string $text  Mustache template source
     * @param int    $index Current tokenizer index
     *
     * @return int New index value
     */
    private function changeDelimiters($text, $index)
    {
        $startIndex = strpos($text, '=', $index) + 1;
        $close      = '=' . $this->ctag;
        $closeIndex = strpos($text, $close, $index);

$token = array(
            self::TYPE => self::T_DELIM_CHANGE,
            self::LINE => $this->line,
        );

try {
            $this->setDelimiters(trim(substr($text, $startIndex, $closeIndex - $startIndex)));
        } catch (Mustache_Exception_InvalidArgumentException $e) {
            throw new Mustache_Exception_SyntaxException($e->getMessage(), $token);
        }

$this->tokens[] = $token;

return $closeIndex + strlen($close) - 1;
    }

/**
     * Set the current Mustache `otag` and `ctag` delimiters.
     *
     * @throws Mustache_Exception_InvalidArgumentException when delimiter string is invalid
     *
     * @param string $delimiters
     */
    private function setDelimiters($delimiters)
    {
        if (!preg_match('/^\s*(\S+)\s+(\S+)\s*$/', $delimiters, $matches)) {
            throw new Mustache_Exception_InvalidArgumentException(sprintf('Invalid delimiters: %s', $delimiters));
        }

list($_, $otag, $ctag) = $matches;

$this->otag     = $otag;
        $this->otagChar = $otag[0];
        $this->otagLen  = strlen($otag);

$this->ctag     = $ctag;
        $this->ctagChar = $ctag[0];
        $this->ctagLen  = strlen($ctag);
    }

/**
     * Add pragma token.
     *
     * Pragmas are hoisted to the front of the template, so all pragma tokens
     * will appear at the front of the token list.
     *
     * @param string $text
     * @param int    $index
     *
     * @return int New index value
     */
    private function addPragma($text, $index)
    {
        $end    = strpos($text, $this->ctag, $index);
        $pragma = trim(substr($text, $index + 2, $end - $index - 2));

// Pragmas are hoisted to the front of the template.
        array_unshift($this->tokens, array(
            self::TYPE => self::T_PRAGMA,
            self::NAME => $pragma,
            self::LINE => 0,
        ));

return $end + $this->ctagLen - 1;
    }
}
<?php
/**
 * Cookie holder object
 *
 * @package Requests
 * @subpackage Cookies
 */

/**
 * Cookie holder object
 *
 * @package Requests
 * @subpackage Cookies
 */
class Requests_Cookie_Jar implements ArrayAccess, IteratorAggregate {
	/**
	 * Actual item data
	 *
	 * @var array
	 */
	protected $cookies = array();

/**
	 * Create a new jar
	 *
	 * @param array $cookies Existing cookie values
	 */
	public function __construct($cookies = array()) {
		$this->cookies = $cookies;
	}

/**
	 * Normalise cookie data into a Requests_Cookie
	 *
	 * @param string|Requests_Cookie $cookie
	 * @return Requests_Cookie
	 */
	public function normalize_cookie($cookie, $key = null) {
		if ($cookie instanceof Requests_Cookie) {
			return $cookie;
		}

return Requests_Cookie::parse($cookie, $key);
	}

/**
	 * Normalise cookie data into a Requests_Cookie
	 *
	 * @codeCoverageIgnore
	 * @deprecated Use {@see Requests_Cookie_Jar::normalize_cookie}
	 * @return Requests_Cookie
	 */
	public function normalizeCookie($cookie, $key = null) {
		return $this->normalize_cookie($cookie, $key);
	}

/**
	 * Check if the given item exists
	 *
	 * @param string $key Item key
	 * @return boolean Does the item exist?
	 */
	public function offsetExists($key) {
		return isset($this->cookies[$key]);
	}

/**
	 * Get the value for the item
	 *
	 * @param string $key Item key
	 * @return string|null Item value (null if offsetExists is false)
	 */
	public function offsetGet($key) {
		if (!isset($this->cookies[$key])) {
			return null;
		}

return $this->cookies[$key];
	}

/**
	 * Set the given item
	 *
	 * @throws Requests_Exception On attempting to use dictionary as list (`invalidset`)
	 *
	 * @param string $key Item name
	 * @param string $value Item value
	 */
	public function offsetSet($key, $value) {
		if ($key === null) {
			throw new Requests_Exception('Object is a dictionary, not a list', 'invalidset');
		}

$this->cookies[$key] = $value;
	}

/**
	 * Unset the given header
	 *
	 * @param string $key
	 */
	public function offsetUnset($key) {
		unset($this->cookies[$key]);
	}

/**
	 * Get an iterator for the data
	 *
	 * @return ArrayIterator
	 */
	public function getIterator() {
		return new ArrayIterator($this->cookies);
	}

/**
	 * Register the cookie handler with the request's hooking system
	 *
	 * @param Requests_Hooker $hooks Hooking system
	 */
	public function register(Requests_Hooker $hooks) {
		$hooks->register('requests.before_request', array($this, 'before_request'));
		$hooks->register('requests.before_redirect_check', array($this, 'before_redirect_check'));
	}

/**
	 * Add Cookie header to a request if we have any
	 *
	 * As per RFC 6265, cookies are separated by '; '
	 *
	 * @param string $url
	 * @param array $headers
	 * @param array $data
	 * @param string $type
	 * @param array $options
	 */
	public function before_request($url, &$headers, &$data, &$type, &$options) {
		if (!$url instanceof Requests_IRI) {
			$url = new Requests_IRI($url);
		}

if (!empty($this->cookies)) {
			$cookies = array();
			foreach ($this->cookies as $key => $cookie) {
				$cookie = $this->normalize_cookie($cookie, $key);

// Skip expired cookies
				if ($cookie->is_expired()) {
					continue;
				}

if ($cookie->domain_matches($url->host)) {
					$cookies[] = $cookie->format_for_header();
				}
			}

$headers['Cookie'] = implode('; ', $cookies);
		}
	}

/**
	 * Parse all cookies from a response and attach them to the response
	 *
	 * @var Requests_Response $response
	 */
	public function before_redirect_check(Requests_Response $return) {
		$url = $return->url;
		if (!$url instanceof Requests_IRI) {
			$url = new Requests_IRI($url);
		}

$cookies         = Requests_Cookie::parse_from_headers($return->headers, $url);
		$this->cookies   = array_merge($this->cookies, $cookies);
		$return->cookies = $this;
	}
}
<?php
/**
 * HTTP response class
 *
 * Contains a response from Requests::request()
 * @package Requests
 */

/**
 * HTTP response class
 *
 * Contains a response from Requests::request()
 * @package Requests
 */
class Requests_Response {
	/**
	 * Constructor
	 */
	public function __construct() {
		$this->headers = new Requests_Response_Headers();
		$this->cookies = new Requests_Cookie_Jar();
	}

/**
	 * Response body
	 *
	 * @var string
	 */
	public $body = '';

/**
	 * Raw HTTP data from the transport
	 *
	 * @var string
	 */
	public $raw = '';

/**
	 * Headers, as an associative array
	 *
	 * @var Requests_Response_Headers Array-like object representing headers
	 */
	public $headers = array();

/**
	 * Status code, false if non-blocking
	 *
	 * @var integer|boolean
	 */
	public $status_code = false;

/**
	 * Protocol version, false if non-blocking
	 *
	 * @var float|boolean
	 */
	public $protocol_version = false;

/**
	 * Whether the request succeeded or not
	 *
	 * @var boolean
	 */
	public $success = false;

/**
	 * Number of redirects the request used
	 *
	 * @var integer
	 */
	public $redirects = 0;

/**
	 * URL requested
	 *
	 * @var string
	 */
	public $url = '';

/**
	 * Previous requests (from redirects)
	 *
	 * @var array Array of Requests_Response objects
	 */
	public $history = array();

/**
	 * Cookies from the request
	 *
	 * @var Requests_Cookie_Jar Array-like object representing a cookie jar
	 */
	public $cookies = array();

/**
	 * Is the response a redirect?
	 *
	 * @return boolean True if redirect (3xx status), false if not.
	 */
	public function is_redirect() {
		$code = $this->status_code;
		return in_array($code, array(300, 301, 302, 303, 307), true) || $code > 307 && $code < 400;
	}

/**
	 * Throws an exception if the request was not successful
	 *
	 * @throws Requests_Exception If `$allow_redirects` is false, and code is 3xx (`response.no_redirects`)
	 * @throws Requests_Exception_HTTP On non-successful status code. Exception class corresponds to code (e.g. {@see Requests_Exception_HTTP_404})
	 * @param boolean $allow_redirects Set to false to throw on a 3xx as well
	 */
	public function throw_for_status($allow_redirects = true) {
		if ($this->is_redirect()) {
			if (!$allow_redirects) {
				throw new Requests_Exception('Redirection not allowed', 'response.no_redirects', $this);
			}
		}
		elseif (!$this->success) {
			$exception = Requests_Exception_HTTP::get_class($this->status_code);
			throw new $exception(null, $this);
		}
	}
}
<?php
/**
 * Handles adding and dispatching events
 *
 * @package Requests
 * @subpackage Utilities
 */

/**
 * Handles adding and dispatching events
 *
 * @package Requests
 * @subpackage Utilities
 */
class Requests_Hooks implements Requests_Hooker {
	/**
	 * Registered callbacks for each hook
	 *
	 * @var array
	 */
	protected $hooks = array();

/**
	 * Constructor
	 */
	public function __construct() {
		// pass
	}

/**
	 * Register a callback for a hook
	 *
	 * @param string $hook Hook name
	 * @param callback $callback Function/method to call on event
	 * @param int $priority Priority number. <0 is executed earlier, >0 is executed later
	 */
	public function register($hook, $callback, $priority = 0) {
		if (!isset($this->hooks[$hook])) {
			$this->hooks[$hook] = array();
		}
		if (!isset($this->hooks[$hook][$priority])) {
			$this->hooks[$hook][$priority] = array();
		}

$this->hooks[$hook][$priority][] = $callback;
	}

/**
	 * Dispatch a message
	 *
	 * @param string $hook Hook name
	 * @param array $parameters Parameters to pass to callbacks
	 * @return boolean Successfulness
	 */
	public function dispatch($hook, $parameters = array()) {
		if (empty($this->hooks[$hook])) {
			return false;
		}

foreach ($this->hooks[$hook] as $priority => $hooked) {
			foreach ($hooked as $callback) {
				call_user_func_array($callback, $parameters);
			}
		}

return true;
	}
}
<?php
/**
 * SSL utilities for Requests
 *
 * @package Requests
 * @subpackage Utilities
 */

/**
 * SSL utilities for Requests
 *
 * Collection of utilities for working with and verifying SSL certificates.
 *
 * @package Requests
 * @subpackage Utilities
 */
class Requests_SSL {
	/**
	 * Verify the certificate against common name and subject alternative names
	 *
	 * Unfortunately, PHP doesn't check the certificate against the alternative
	 * names, leading things like 'https://www.github.com/' to be invalid.
	 *
	 * @see https://tools.ietf.org/html/rfc2818#section-3.1 RFC2818, Section 3.1
	 *
	 * @throws Requests_Exception On not obtaining a match for the host (`fsockopen.ssl.no_match`)
	 * @param string $host Host name to verify against
	 * @param array $cert Certificate data from openssl_x509_parse()
	 * @return bool
	 */
	public static function verify_certificate($host, $cert) {
		$has_dns_alt = false;

// Check the subjectAltName
		if (!empty($cert['extensions']) && !empty($cert['extensions']['subjectAltName'])) {
			$altnames = explode(',', $cert['extensions']['subjectAltName']);
			foreach ($altnames as $altname) {
				$altname = trim($altname);
				if (strpos($altname, 'DNS:') !== 0) {
					continue;
				}

$has_dns_alt = true;

// Strip the 'DNS:' prefix and trim whitespace
				$altname = trim(substr($altname, 4));

// Check for a match
				if (self::match_domain($host, $altname) === true) {
					return true;
				}
			}
		}

// Fall back to checking the common name if we didn't get any dNSName
		// alt names, as per RFC2818
		if (!$has_dns_alt && !empty($cert['subject']['CN'])) {
			// Check for a match
			if (self::match_domain($host, $cert['subject']['CN']) === true) {
				return true;
			}
		}

return false;
	}

/**
	 * Verify that a reference name is valid
	 *
	 * Verifies a dNSName for HTTPS usage, (almost) as per Firefox's rules:
	 * - Wildcards can only occur in a name with more than 3 components
	 * - Wildcards can only occur as the last character in the first
	 *   component
	 * - Wildcards may be preceded by additional characters
	 *
	 * We modify these rules to be a bit stricter and only allow the wildcard
	 * character to be the full first component; that is, with the exclusion of
	 * the third rule.
	 *
	 * @param string $reference Reference dNSName
	 * @return boolean Is the name valid?
	 */
	public static function verify_reference_name($reference) {
		$parts = explode('.', $reference);

// Check the first part of the name
		$first = array_shift($parts);

if (strpos($first, '*') !== false) {
			// Check that the wildcard is the full part
			if ($first !== '*') {
				return false;
			}

// Check that we have at least 3 components (including first)
			if (count($parts) < 2) {
				return false;
			}
		}

// Check the remaining parts
		foreach ($parts as $part) {
			if (strpos($part, '*') !== false) {
				return false;
			}
		}

// Nothing found, verified!
		return true;
	}

/**
	 * Match a hostname against a dNSName reference
	 *
	 * @param string $host Requested host
	 * @param string $reference dNSName to match against
	 * @return boolean Does the domain match?
	 */
	public static function match_domain($host, $reference) {
		// Check if the reference is blocklisted first
		if (self::verify_reference_name($reference) !== true) {
			return false;
		}

// Check for a direct match
		if ($host === $reference) {
			return true;
		}

// Calculate the valid wildcard match if the host is not an IP address
		// Also validates that the host has 3 parts or more, as per Firefox's
		// ruleset.
		if (ip2long($host) === false) {
			$parts    = explode('.', $host);
			$parts[0] = '*';
			$wildcard = implode('.', $parts);
			if ($wildcard === $reference) {
				return true;
			}
		}

return false;
	}
}
<?php
/**
 * Event dispatcher
 *
 * @package Requests
 * @subpackage Utilities
 */

/**
 * Event dispatcher
 *
 * @package Requests
 * @subpackage Utilities
 */
interface Requests_Hooker {
	/**
	 * Register a callback for a hook
	 *
	 * @param string $hook Hook name
	 * @param callback $callback Function/method to call on event
	 * @param int $priority Priority number. <0 is executed earlier, >0 is executed later
	 */
	public function register($hook, $callback, $priority = 0);

/**
	 * Dispatch a message
	 *
	 * @param string $hook Hook name
	 * @param array $parameters Parameters to pass to callbacks
	 * @return boolean Successfulness
	 */
	public function dispatch($hook, $parameters = array());
}
<?php
/**
 * cURL HTTP transport
 *
 * @package Requests
 * @subpackage Transport
 */

/**
 * cURL HTTP transport
 *
 * @package Requests
 * @subpackage Transport
 */
class Requests_Transport_cURL implements Requests_Transport {
	const CURL_7_10_5 = 0x070A05;
	const CURL_7_16_2 = 0x071002;

/**
	 * Raw HTTP data
	 *
	 * @var string
	 */
	public $headers = '';

/**
	 * Raw body data
	 *
	 * @var string
	 */
	public $response_data = '';

/**
	 * Information on the current request
	 *
	 * @var array cURL information array, see {@see https://secure.php.net/curl_getinfo}
	 */
	public $info;

/**
	 * cURL version number
	 *
	 * @var int
	 */
	public $version;

/**
	 * cURL handle
	 *
	 * @var resource
	 */
	protected $handle;

/**
	 * Hook dispatcher instance
	 *
	 * @var Requests_Hooks
	 */
	protected $hooks;

/**
	 * Have we finished the headers yet?
	 *
	 * @var boolean
	 */
	protected $done_headers = false;

/**
	 * If streaming to a file, keep the file pointer
	 *
	 * @var resource
	 */
	protected $stream_handle;

/**
	 * How many bytes are in the response body?
	 *
	 * @var int
	 */
	protected $response_bytes;

/**
	 * What's the maximum number of bytes we should keep?
	 *
	 * @var int|bool Byte count, or false if no limit.
	 */
	protected $response_byte_limit;

/**
	 * Constructor
	 */
	public function __construct() {
		$curl          = curl_version();
		$this->version = $curl['version_number'];
		$this->handle  = curl_init();

curl_setopt($this->handle, CURLOPT_HEADER, false);
		curl_setopt($this->handle, CURLOPT_RETURNTRANSFER, 1);
		if ($this->version >= self::CURL_7_10_5) {
			curl_setopt($this->handle, CURLOPT_ENCODING, '');
		}
		if (defined('CURLOPT_PROTOCOLS')) {
			// phpcs:ignore PHPCompatibility.Constants.NewConstants.curlopt_protocolsFound
			curl_setopt($this->handle, CURLOPT_PROTOCOLS, CURLPROTO_HTTP | CURLPROTO_HTTPS);
		}
		if (defined('CURLOPT_REDIR_PROTOCOLS')) {
			// phpcs:ignore PHPCompatibility.Constants.NewConstants.curlopt_redir_protocolsFound
			curl_setopt($this->handle, CURLOPT_REDIR_PROTOCOLS, CURLPROTO_HTTP | CURLPROTO_HTTPS);
		}
	}

/**
	 * Destructor
	 */
	public function __destruct() {
		if (is_resource($this->handle)) {
			curl_close($this->handle);
		}
	}

/**
	 * Perform a request
	 *
	 * @throws Requests_Exception On a cURL error (`curlerror`)
	 *
	 * @param string $url URL to request
	 * @param array $headers Associative array of request headers
	 * @param string|array $data Data to send either as the POST body, or as parameters in the URL for a GET/HEAD
	 * @param array $options Request options, see {@see Requests::response()} for documentation
	 * @return string Raw HTTP result
	 */
	public function request($url, $headers = array(), $data = array(), $options = array()) {
		$this->hooks = $options['hooks'];

$this->setup_handle($url, $headers, $data, $options);

$options['hooks']->dispatch('curl.before_send', array(&$this->handle));

if ($options['filename'] !== false) {
			$this->stream_handle = fopen($options['filename'], 'wb');
		}

$this->response_data       = '';
		$this->response_bytes      = 0;
		$this->response_byte_limit = false;
		if ($options['max_bytes'] !== false) {
			$this->response_byte_limit = $options['max_bytes'];
		}

if (isset($options['verify'])) {
			if ($options['verify'] === false) {
				curl_setopt($this->handle, CURLOPT_SSL_VERIFYHOST, 0);
				curl_setopt($this->handle, CURLOPT_SSL_VERIFYPEER, 0);
			}
			elseif (is_string($options['verify'])) {
				curl_setopt($this->handle, CURLOPT_CAINFO, $options['verify']);
			}
		}

if (isset($options['verifyname']) && $options['verifyname'] === false) {
			curl_setopt($this->handle, CURLOPT_SSL_VERIFYHOST, 0);
		}

curl_exec($this->handle);
		$response = $this->response_data;

$options['hooks']->dispatch('curl.after_send', array());

if (curl_errno($this->handle) === 23 || curl_errno($this->handle) === 61) {
			// Reset encoding and try again
			curl_setopt($this->handle, CURLOPT_ENCODING, 'none');

$this->response_data  = '';
			$this->response_bytes = 0;
			curl_exec($this->handle);
			$response = $this->response_data;
		}

$this->process_response($response, $options);

// Need to remove the $this reference from the curl handle.
		// Otherwise Requests_Transport_cURL wont be garbage collected and the curl_close() will never be called.
		curl_setopt($this->handle, CURLOPT_HEADERFUNCTION, null);
		curl_setopt($this->handle, CURLOPT_WRITEFUNCTION, null);

return $this->headers;
	}

/**
	 * Send multiple requests simultaneously
	 *
	 * @param array $requests Request data
	 * @param array $options Global options
	 * @return array Array of Requests_Response objects (may contain Requests_Exception or string responses as well)
	 */
	public function request_multiple($requests, $options) {
		// If you're not requesting, we can't get any responses ¯\_(ツ)_/¯
		if (empty($requests)) {
			return array();
		}

$multihandle = curl_multi_init();
		$subrequests = array();
		$subhandles  = array();

$class = get_class($this);
		foreach ($requests as $id => $request) {
			$subrequests[$id] = new $class();
			$subhandles[$id]  = $subrequests[$id]->get_subrequest_handle($request['url'], $request['headers'], $request['data'], $request['options']);
			$request['options']['hooks']->dispatch('curl.before_multi_add', array(&$subhandles[$id]));
			curl_multi_add_handle($multihandle, $subhandles[$id]);
		}

$completed       = 0;
		$responses       = array();
		$subrequestcount = count($subrequests);

$request['options']['hooks']->dispatch('curl.before_multi_exec', array(&$multihandle));

do {
			$active = 0;

do {
				$status = curl_multi_exec($multihandle, $active);
			}
			while ($status === CURLM_CALL_MULTI_PERFORM);

$to_process = array();

// Read the information as needed
			while ($done = curl_multi_info_read($multihandle)) {
				$key = array_search($done['handle'], $subhandles, true);
				if (!isset($to_process[$key])) {
					$to_process[$key] = $done;
				}
			}

// Parse the finished requests before we start getting the new ones
			foreach ($to_process as $key => $done) {
				$options = $requests[$key]['options'];
				if ($done['result'] !== CURLE_OK) {
					//get error string for handle.
					$reason          = curl_error($done['handle']);
					$exception       = new Requests_Exception_Transport_cURL(
						$reason,
						Requests_Exception_Transport_cURL::EASY,
						$done['handle'],
						$done['result']
					);
					$responses[$key] = $exception;
					$options['hooks']->dispatch('transport.internal.parse_error', array(&$responses[$key], $requests[$key]));
				}
				else {
					$responses[$key] = $subrequests[$key]->process_response($subrequests[$key]->response_data, $options);

$options['hooks']->dispatch('transport.internal.parse_response', array(&$responses[$key], $requests[$key]));
				}

curl_multi_remove_handle($multihandle, $done['handle']);
				curl_close($done['handle']);

if (!is_string($responses[$key])) {
					$options['hooks']->dispatch('multiple.request.complete', array(&$responses[$key], $key));
				}
				$completed++;
			}
		}
		while ($active || $completed < $subrequestcount);

$request['options']['hooks']->dispatch('curl.after_multi_exec', array(&$multihandle));

curl_multi_close($multihandle);

return $responses;
	}

/**
	 * Get the cURL handle for use in a multi-request
	 *
	 * @param string $url URL to request
	 * @param array $headers Associative array of request headers
	 * @param string|array $data Data to send either as the POST body, or as parameters in the URL for a GET/HEAD
	 * @param array $options Request options, see {@see Requests::response()} for documentation
	 * @return resource Subrequest's cURL handle
	 */
	public function &get_subrequest_handle($url, $headers, $data, $options) {
		$this->setup_handle($url, $headers, $data, $options);

if ($options['filename'] !== false) {
			$this->stream_handle = fopen($options['filename'], 'wb');
		}

return $this->handle;
	}

/**
	 * Setup the cURL handle for the given data
	 *
	 * @param string $url URL to request
	 * @param array $headers Associative array of request headers
	 * @param string|array $data Data to send either as the POST body, or as parameters in the URL for a GET/HEAD
	 * @param array $options Request options, see {@see Requests::response()} for documentation
	 */
	protected function setup_handle($url, $headers, $data, $options) {
		$options['hooks']->dispatch('curl.before_request', array(&$this->handle));

// Force closing the connection for old versions of cURL (<7.22).
		if (!isset($headers['Connection'])) {
			$headers['Connection'] = 'close';
		}

/**
		 * Add "Expect" header.
		 *
		 * By default, cURL adds a "Expect: 100-Continue" to most requests. This header can
		 * add as much as a second to the time it takes for cURL to perform a request. To
		 * prevent this, we need to set an empty "Expect" header. To match the behaviour of
		 * Guzzle, we'll add the empty header to requests that are smaller than 1 MB and use
		 * HTTP/1.1.
		 *
		 * https://curl.se/mail/lib-2017-07/0013.html
		 */
		if (!isset($headers['Expect']) && $options['protocol_version'] === 1.1) {
			$headers['Expect'] = $this->get_expect_header($data);
		}

$headers = Requests::flatten($headers);

if (!empty($data)) {
			$data_format = $options['data_format'];

if ($data_format === 'query') {
				$url  = self::format_get($url, $data);
				$data = '';
			}
			elseif (!is_string($data)) {
				$data = http_build_query($data, null, '&');
			}
		}

switch ($options['type']) {
			case Requests::POST:
				curl_setopt($this->handle, CURLOPT_POST, true);
				curl_setopt($this->handle, CURLOPT_POSTFIELDS, $data);
				break;
			case Requests::HEAD:
				curl_setopt($this->handle, CURLOPT_CUSTOMREQUEST, $options['type']);
				curl_setopt($this->handle, CURLOPT_NOBODY, true);
				break;
			case Requests::TRACE:
				curl_setopt($this->handle, CURLOPT_CUSTOMREQUEST, $options['type']);
				break;
			case Requests::PATCH:
			case Requests::PUT:
			case Requests::DELETE:
			case Requests::OPTIONS:
			default:
				curl_setopt($this->handle, CURLOPT_CUSTOMREQUEST, $options['type']);
				if (!empty($data)) {
					curl_setopt($this->handle, CURLOPT_POSTFIELDS, $data);
				}
		}

// cURL requires a minimum timeout of 1 second when using the system
		// DNS resolver, as it uses `alarm()`, which is second resolution only.
		// There's no way to detect which DNS resolver is being used from our
		// end, so we need to round up regardless of the supplied timeout.
		//
		// https://github.com/curl/curl/blob/4f45240bc84a9aa648c8f7243be7b79e9f9323a5/lib/hostip.c#L606-L609
		$timeout = max($options['timeout'], 1);

if (is_int($timeout) || $this->version < self::CURL_7_16_2) {
			curl_setopt($this->handle, CURLOPT_TIMEOUT, ceil($timeout));
		}
		else {
			// phpcs:ignore PHPCompatibility.Constants.NewConstants.curlopt_timeout_msFound
			curl_setopt($this->handle, CURLOPT_TIMEOUT_MS, round($timeout * 1000));
		}

if (is_int($options['connect_timeout']) || $this->version < self::CURL_7_16_2) {
			curl_setopt($this->handle, CURLOPT_CONNECTTIMEOUT, ceil($options['connect_timeout']));
		}
		else {
			// phpcs:ignore PHPCompatibility.Constants.NewConstants.curlopt_connecttimeout_msFound
			curl_setopt($this->handle, CURLOPT_CONNECTTIMEOUT_MS, round($options['connect_timeout'] * 1000));
		}
		curl_setopt($this->handle, CURLOPT_URL, $url);
		curl_setopt($this->handle, CURLOPT_REFERER, $url);
		curl_setopt($this->handle, CURLOPT_USERAGENT, $options['useragent']);
		if (!empty($headers)) {
			curl_setopt($this->handle, CURLOPT_HTTPHEADER, $headers);
		}
		if ($options['protocol_version'] === 1.1) {
			curl_setopt($this->handle, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
		}
		else {
			curl_setopt($this->handle, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0);
		}

if ($options['blocking'] === true) {
			curl_setopt($this->handle, CURLOPT_HEADERFUNCTION, array($this, 'stream_headers'));
			curl_setopt($this->handle, CURLOPT_WRITEFUNCTION, array($this, 'stream_body'));
			curl_setopt($this->handle, CURLOPT_BUFFERSIZE, Requests::BUFFER_SIZE);
		}
	}

/**
	 * Process a response
	 *
	 * @param string $response Response data from the body
	 * @param array $options Request options
	 * @return string|false HTTP response data including headers. False if non-blocking.
	 * @throws Requests_Exception
	 */
	public function process_response($response, $options) {
		if ($options['blocking'] === false) {
			$fake_headers = '';
			$options['hooks']->dispatch('curl.after_request', array(&$fake_headers));
			return false;
		}
		if ($options['filename'] !== false && $this->stream_handle) {
			fclose($this->stream_handle);
			$this->headers = trim($this->headers);
		}
		else {
			$this->headers .= $response;
		}

if (curl_errno($this->handle)) {
			$error = sprintf(
				'cURL error %s: %s',
				curl_errno($this->handle),
				curl_error($this->handle)
			);
			throw new Requests_Exception($error, 'curlerror', $this->handle);
		}
		$this->info = curl_getinfo($this->handle);

$options['hooks']->dispatch('curl.after_request', array(&$this->headers, &$this->info));
		return $this->headers;
	}

/**
	 * Collect the headers as they are received
	 *
	 * @param resource $handle cURL resource
	 * @param string $headers Header string
	 * @return integer Length of provided header
	 */
	public function stream_headers($handle, $headers) {
		// Why do we do this? cURL will send both the final response and any
		// interim responses, such as a 100 Continue. We don't need that.
		// (We may want to keep this somewhere just in case)
		if ($this->done_headers) {
			$this->headers      = '';
			$this->done_headers = false;
		}
		$this->headers .= $headers;

if ($headers === "\r\n") {
			$this->done_headers = true;
		}
		return strlen($headers);
	}

/**
	 * Collect data as it's received
	 *
	 * @since 1.6.1
	 *
	 * @param resource $handle cURL resource
	 * @param string $data Body data
	 * @return integer Length of provided data
	 */
	public function stream_body($handle, $data) {
		$this->hooks->dispatch('request.progress', array($data, $this->response_bytes, $this->response_byte_limit));
		$data_length = strlen($data);

// Are we limiting the response size?
		if ($this->response_byte_limit) {
			if ($this->response_bytes === $this->response_byte_limit) {
				// Already at maximum, move on
				return $data_length;
			}

if (($this->response_bytes + $data_length) > $this->response_byte_limit) {
				// Limit the length
				$limited_length = ($this->response_byte_limit - $this->response_bytes);
				$data           = substr($data, 0, $limited_length);
			}
		}

if ($this->stream_handle) {
			fwrite($this->stream_handle, $data);
		}
		else {
			$this->response_data .= $data;
		}

$this->response_bytes += strlen($data);
		return $data_length;
	}

/**
	 * Format a URL given GET data
	 *
	 * @param string $url
	 * @param array|object $data Data to build query using, see {@see https://secure.php.net/http_build_query}
	 * @return string URL with data
	 */
	protected static function format_get($url, $data) {
		if (!empty($data)) {
			$query     = '';
			$url_parts = parse_url($url);
			if (empty($url_parts['query'])) {
				$url_parts['query'] = '';
			}
			else {
				$query = $url_parts['query'];
			}

$query .= '&' . http_build_query($data, null, '&');
			$query  = trim($query, '&');

if (empty($url_parts['query'])) {
				$url .= '?' . $query;
			}
			else {
				$url = str_replace($url_parts['query'], $query, $url);
			}
		}
		return $url;
	}

/**
	 * Whether this transport is valid
	 *
	 * @codeCoverageIgnore
	 * @return boolean True if the transport is valid, false otherwise.
	 */
	public static function test($capabilities = array()) {
		if (!function_exists('curl_init') || !function_exists('curl_exec')) {
			return false;
		}

// If needed, check that our installed curl version supports SSL
		if (isset($capabilities['ssl']) && $capabilities['ssl']) {
			$curl_version = curl_version();
			if (!(CURL_VERSION_SSL & $curl_version['features'])) {
				return false;
			}
		}

return true;
	}

/**
	 * Get the correct "Expect" header for the given request data.
	 *
	 * @param string|array $data Data to send either as the POST body, or as parameters in the URL for a GET/HEAD.
	 * @return string The "Expect" header.
	 */
	protected function get_expect_header($data) {
		if (!is_array($data)) {
			return strlen((string) $data) >= 1048576 ? '100-Continue' : '';
		}

$bytesize = 0;
		$iterator = new RecursiveIteratorIterator(new RecursiveArrayIterator($data));

foreach ($iterator as $datum) {
			$bytesize += strlen((string) $datum);

if ($bytesize >= 1048576) {
				return '100-Continue';
			}
		}

return '';
	}
}
<?php
/**
 * fsockopen HTTP transport
 *
 * @package Requests
 * @subpackage Transport
 */

/**
 * fsockopen HTTP transport
 *
 * @package Requests
 * @subpackage Transport
 */
class Requests_Transport_fsockopen implements Requests_Transport {
	/**
	 * Second to microsecond conversion
	 *
	 * @var integer
	 */
	const SECOND_IN_MICROSECONDS = 1000000;

/**
	 * Raw HTTP data
	 *
	 * @var string
	 */
	public $headers = '';

/**
	 * Stream metadata
	 *
	 * @var array Associative array of properties, see {@see https://secure.php.net/stream_get_meta_data}
	 */
	public $info;

/**
	 * What's the maximum number of bytes we should keep?
	 *
	 * @var int|bool Byte count, or false if no limit.
	 */
	protected $max_bytes = false;

protected $connect_error = '';

/**
	 * Perform a request
	 *
	 * @throws Requests_Exception On failure to connect to socket (`fsockopenerror`)
	 * @throws Requests_Exception On socket timeout (`timeout`)
	 *
	 * @param string $url URL to request
	 * @param array $headers Associative array of request headers
	 * @param string|array $data Data to send either as the POST body, or as parameters in the URL for a GET/HEAD
	 * @param array $options Request options, see {@see Requests::response()} for documentation
	 * @return string Raw HTTP result
	 */
	public function request($url, $headers = array(), $data = array(), $options = array()) {
		$options['hooks']->dispatch('fsockopen.before_request');

$url_parts = parse_url($url);
		if (empty($url_parts)) {
			throw new Requests_Exception('Invalid URL.', 'invalidurl', $url);
		}
		$host                     = $url_parts['host'];
		$context                  = stream_context_create();
		$verifyname               = false;
		$case_insensitive_headers = new Requests_Utility_CaseInsensitiveDictionary($headers);

// HTTPS support
		if (isset($url_parts['scheme']) && strtolower($url_parts['scheme']) === 'https') {
			$remote_socket = 'ssl://' . $host;
			if (!isset($url_parts['port'])) {
				$url_parts['port'] = 443;
			}

$context_options = array(
				'verify_peer'       => true,
				'capture_peer_cert' => true,
			);
			$verifyname      = true;

// SNI, if enabled (OpenSSL >=0.9.8j)
			// phpcs:ignore PHPCompatibility.Constants.NewConstants.openssl_tlsext_server_nameFound
			if (defined('OPENSSL_TLSEXT_SERVER_NAME') && OPENSSL_TLSEXT_SERVER_NAME) {
				$context_options['SNI_enabled'] = true;
				if (isset($options['verifyname']) && $options['verifyname'] === false) {
					$context_options['SNI_enabled'] = false;
				}
			}

if (isset($options['verify'])) {
				if ($options['verify'] === false) {
					$context_options['verify_peer']      = false;
					$context_options['verify_peer_name'] = false;
					$verifyname                          = false;
				}
				elseif (is_string($options['verify'])) {
					$context_options['cafile'] = $options['verify'];
				}
			}

if (isset($options['verifyname']) && $options['verifyname'] === false) {
				$context_options['verify_peer_name'] = false;
				$verifyname                          = false;
			}

stream_context_set_option($context, array('ssl' => $context_options));
		}
		else {
			$remote_socket = 'tcp://' . $host;
		}

$this->max_bytes = $options['max_bytes'];

if (!isset($url_parts['port'])) {
			$url_parts['port'] = 80;
		}
		$remote_socket .= ':' . $url_parts['port'];

// phpcs:ignore WordPress.PHP.DevelopmentFunctions.error_log_set_error_handler
		set_error_handler(array($this, 'connect_error_handler'), E_WARNING | E_NOTICE);

$options['hooks']->dispatch('fsockopen.remote_socket', array(&$remote_socket));

$socket = stream_socket_client($remote_socket, $errno, $errstr, ceil($options['connect_timeout']), STREAM_CLIENT_CONNECT, $context);

restore_error_handler();

if ($verifyname && !$this->verify_certificate_from_context($host, $context)) {
			throw new Requests_Exception('SSL certificate did not match the requested domain name', 'ssl.no_match');
		}

if (!$socket) {
			if ($errno === 0) {
				// Connection issue
				throw new Requests_Exception(rtrim($this->connect_error), 'fsockopen.connect_error');
			}

throw new Requests_Exception($errstr, 'fsockopenerror', null, $errno);
		}

$data_format = $options['data_format'];

if ($data_format === 'query') {
			$path = self::format_get($url_parts, $data);
			$data = '';
		}
		else {
			$path = self::format_get($url_parts, array());
		}

$options['hooks']->dispatch('fsockopen.remote_host_path', array(&$path, $url));

$request_body = '';
		$out          = sprintf("%s %s HTTP/%.1F\r\n", $options['type'], $path, $options['protocol_version']);

if ($options['type'] !== Requests::TRACE) {
			if (is_array($data)) {
				$request_body = http_build_query($data, '', '&');
			}
			else {
				$request_body = $data;
			}

// Always include Content-length on POST requests to prevent
			// 411 errors from some servers when the body is empty.
			if (!empty($data) || $options['type'] === Requests::POST) {
				if (!isset($case_insensitive_headers['Content-Length'])) {
					$headers['Content-Length'] = strlen($request_body);
				}

if (!isset($case_insensitive_headers['Content-Type'])) {
					$headers['Content-Type'] = 'application/x-www-form-urlencoded; charset=UTF-8';
				}
			}
		}

if (!isset($case_insensitive_headers['Host'])) {
			$out .= sprintf('Host: %s', $url_parts['host']);

if ((strtolower($url_parts['scheme']) === 'http' && $url_parts['port'] !== 80) || (strtolower($url_parts['scheme']) === 'https' && $url_parts['port'] !== 443)) {
				$out .= ':' . $url_parts['port'];
			}
			$out .= "\r\n";
		}

if (!isset($case_insensitive_headers['User-Agent'])) {
			$out .= sprintf("User-Agent: %s\r\n", $options['useragent']);
		}

$accept_encoding = $this->accept_encoding();
		if (!isset($case_insensitive_headers['Accept-Encoding']) && !empty($accept_encoding)) {
			$out .= sprintf("Accept-Encoding: %s\r\n", $accept_encoding);
		}

$headers = Requests::flatten($headers);

if (!empty($headers)) {
			$out .= implode("\r\n", $headers) . "\r\n";
		}

$options['hooks']->dispatch('fsockopen.after_headers', array(&$out));

if (substr($out, -2) !== "\r\n") {
			$out .= "\r\n";
		}

if (!isset($case_insensitive_headers['Connection'])) {
			$out .= "Connection: Close\r\n";
		}

$out .= "\r\n" . $request_body;

$options['hooks']->dispatch('fsockopen.before_send', array(&$out));

fwrite($socket, $out);
		$options['hooks']->dispatch('fsockopen.after_send', array($out));

if (!$options['blocking']) {
			fclose($socket);
			$fake_headers = '';
			$options['hooks']->dispatch('fsockopen.after_request', array(&$fake_headers));
			return '';
		}

$timeout_sec = (int) floor($options['timeout']);
		if ($timeout_sec === $options['timeout']) {
			$timeout_msec = 0;
		}
		else {
			$timeout_msec = self::SECOND_IN_MICROSECONDS * $options['timeout'] % self::SECOND_IN_MICROSECONDS;
		}
		stream_set_timeout($socket, $timeout_sec, $timeout_msec);

$response   = '';
		$body       = '';
		$headers    = '';
		$this->info = stream_get_meta_data($socket);
		$size       = 0;
		$doingbody  = false;
		$download   = false;
		if ($options['filename']) {
			$download = fopen($options['filename'], 'wb');
		}

while (!feof($socket)) {
			$this->info = stream_get_meta_data($socket);
			if ($this->info['timed_out']) {
				throw new Requests_Exception('fsocket timed out', 'timeout');
			}

$block = fread($socket, Requests::BUFFER_SIZE);
			if (!$doingbody) {
				$response .= $block;
				if (strpos($response, "\r\n\r\n")) {
					list($headers, $block) = explode("\r\n\r\n", $response, 2);
					$doingbody             = true;
				}
			}

// Are we in body mode now?
			if ($doingbody) {
				$options['hooks']->dispatch('request.progress', array($block, $size, $this->max_bytes));
				$data_length = strlen($block);
				if ($this->max_bytes) {
					// Have we already hit a limit?
					if ($size === $this->max_bytes) {
						continue;
					}
					if (($size + $data_length) > $this->max_bytes) {
						// Limit the length
						$limited_length = ($this->max_bytes - $size);
						$block          = substr($block, 0, $limited_length);
					}
				}

$size += strlen($block);
				if ($download) {
					fwrite($download, $block);
				}
				else {
					$body .= $block;
				}
			}
		}
		$this->headers = $headers;

if ($download) {
			fclose($download);
		}
		else {
			$this->headers .= "\r\n\r\n" . $body;
		}
		fclose($socket);

$options['hooks']->dispatch('fsockopen.after_request', array(&$this->headers, &$this->info));
		return $this->headers;
	}

/**
	 * Send multiple requests simultaneously
	 *
	 * @param array $requests Request data (array of 'url', 'headers', 'data', 'options') as per {@see Requests_Transport::request}
	 * @param array $options Global options, see {@see Requests::response()} for documentation
	 * @return array Array of Requests_Response objects (may contain Requests_Exception or string responses as well)
	 */
	public function request_multiple($requests, $options) {
		$responses = array();
		$class     = get_class($this);
		foreach ($requests as $id => $request) {
			try {
				$handler        = new $class();
				$responses[$id] = $handler->request($request['url'], $request['headers'], $request['data'], $request['options']);

$request['options']['hooks']->dispatch('transport.internal.parse_response', array(&$responses[$id], $request));
			}
			catch (Requests_Exception $e) {
				$responses[$id] = $e;
			}

if (!is_string($responses[$id])) {
				$request['options']['hooks']->dispatch('multiple.request.complete', array(&$responses[$id], $id));
			}
		}

return $responses;
	}

/**
	 * Retrieve the encodings we can accept
	 *
	 * @return string Accept-Encoding header value
	 */
	protected static function accept_encoding() {
		$type = array();
		if (function_exists('gzinflate')) {
			$type[] = 'deflate;q=1.0';
		}

if (function_exists('gzuncompress')) {
			$type[] = 'compress;q=0.5';
		}

$type[] = 'gzip;q=0.5';

return implode(', ', $type);
	}

/**
	 * Format a URL given GET data
	 *
	 * @param array $url_parts
	 * @param array|object $data Data to build query using, see {@see https://secure.php.net/http_build_query}
	 * @return string URL with data
	 */
	protected static function format_get($url_parts, $data) {
		if (!empty($data)) {
			if (empty($url_parts['query'])) {
				$url_parts['query'] = '';
			}

$url_parts['query'] .= '&' . http_build_query($data, '', '&');
			$url_parts['query']  = trim($url_parts['query'], '&');
		}
		if (isset($url_parts['path'])) {
			if (isset($url_parts['query'])) {
				$get = $url_parts['path'] . '?' . $url_parts['query'];
			}
			else {
				$get = $url_parts['path'];
			}
		}
		else {
			$get = '/';
		}
		return $get;
	}

/**
	 * Error handler for stream_socket_client()
	 *
	 * @param int $errno Error number (e.g. E_WARNING)
	 * @param string $errstr Error message
	 */
	public function connect_error_handler($errno, $errstr) {
		// Double-check we can handle it
		if (($errno & E_WARNING) === 0 && ($errno & E_NOTICE) === 0) {
			// Return false to indicate the default error handler should engage
			return false;
		}

$this->connect_error .= $errstr . "\n";
		return true;
	}

/**
	 * Verify the certificate against common name and subject alternative names
	 *
	 * Unfortunately, PHP doesn't check the certificate against the alternative
	 * names, leading things like 'https://www.github.com/' to be invalid.
	 * Instead
	 *
	 * @see https://tools.ietf.org/html/rfc2818#section-3.1 RFC2818, Section 3.1
	 *
	 * @throws Requests_Exception On failure to connect via TLS (`fsockopen.ssl.connect_error`)
	 * @throws Requests_Exception On not obtaining a match for the host (`fsockopen.ssl.no_match`)
	 * @param string $host Host name to verify against
	 * @param resource $context Stream context
	 * @return bool
	 */
	public function verify_certificate_from_context($host, $context) {
		$meta = stream_context_get_options($context);

// If we don't have SSL options, then we couldn't make the connection at
		// all
		if (empty($meta) || empty($meta['ssl']) || empty($meta['ssl']['peer_certificate'])) {
			throw new Requests_Exception(rtrim($this->connect_error), 'ssl.connect_error');
		}

$cert = openssl_x509_parse($meta['ssl']['peer_certificate']);

return Requests_SSL::verify_certificate($host, $cert);
	}

// If needed, check that streams support SSL
		if (isset($capabilities['ssl']) && $capabilities['ssl']) {
			if (!extension_loaded('openssl') || !function_exists('openssl_x509_parse')) {
				return false;
			}

// Currently broken, thanks to https://github.com/facebook/hhvm/issues/2156
			if (defined('HHVM_VERSION')) {
				return false;
			}
		}

return true;
	}
}
<?php

class Requests_Exception_Transport_cURL extends Requests_Exception_Transport {

const EASY  = 'cURLEasy';
	const MULTI = 'cURLMulti';
	const SHARE = 'cURLShare';

/**
	 * cURL error code
	 *
	 * @var integer
	 */
	protected $code = -1;

/**
	 * Which type of cURL error
	 *
	 * EASY|MULTI|SHARE
	 *
	 * @var string
	 */
	protected $type = 'Unknown';

/**
	 * Clear text error message
	 *
	 * @var string
	 */
	protected $reason = 'Unknown';

public function __construct($message, $type, $data = null, $code = 0) {
		if ($type !== null) {
			$this->type = $type;
		}

if ($code !== null) {
			$this->code = $code;
		}

if ($message !== null) {
			$this->reason = $message;
		}

$message = sprintf('%d %s', $this->code, $this->reason);
		parent::__construct($message, $this->type, $data, $this->code);
	}

/**
	 * Get the error message
	 */
	public function getReason() {
		return $this->reason;
	}

}
<?php
/**
 * Exception based on HTTP response
 *
 * @package Requests
 */

/**
 * Exception based on HTTP response
 *
 * @package Requests
 */
class Requests_Exception_HTTP extends Requests_Exception {
	/**
	 * HTTP status code
	 *
	 * @var integer
	 */
	protected $code = 0;

/**
	 * Reason phrase
	 *
	 * @var string
	 */
	protected $reason = 'Unknown';

/**
	 * Create a new exception
	 *
	 * There is no mechanism to pass in the status code, as this is set by the
	 * subclass used. Reason phrases can vary, however.
	 *
	 * @param string|null $reason Reason phrase
	 * @param mixed $data Associated data
	 */
	public function __construct($reason = null, $data = null) {
		if ($reason !== null) {
			$this->reason = $reason;
		}

$message = sprintf('%d %s', $this->code, $this->reason);
		parent::__construct($message, 'httpresponse', $data, $this->code);
	}

/**
	 * Get the status message
	 */
	public function getReason() {
		return $this->reason;
	}

/**
	 * Get the correct exception class for a given error code
	 *
	 * @param int|bool $code HTTP status code, or false if unavailable
	 * @return string Exception class name to use
	 */
	public static function get_class($code) {
		if (!$code) {
			return 'Requests_Exception_HTTP_Unknown';
		}

$class = sprintf('Requests_Exception_HTTP_%d', $code);
		if (class_exists($class)) {
			return $class;
		}

return 'Requests_Exception_HTTP_Unknown';
	}
}
<?php
/**
 * Exception for unknown status responses
 *
 * @package Requests
 */

/**
 * Exception for unknown status responses
 *
 * @package Requests
 */
class Requests_Exception_HTTP_Unknown extends Requests_Exception_HTTP {
	/**
	 * HTTP status code
	 *
	 * @var integer|bool Code if available, false if an error occurred
	 */
	protected $code = 0;

/**
	 * Reason phrase
	 *
	 * @var string
	 */
	protected $reason = 'Unknown';

/**
	 * Create a new exception
	 *
	 * If `$data` is an instance of {@see Requests_Response}, uses the status
	 * code from it. Otherwise, sets as 0
	 *
	 * @param string|null $reason Reason phrase
	 * @param mixed $data Associated data
	 */
	public function __construct($reason = null, $data = null) {
		if ($data instanceof Requests_Response) {
			$this->code = $data->status_code;
		}

parent::__construct($reason, $data);
	}
}
<?php
/**
 * Exception for 410 Gone responses
 *
 * @package Requests
 */

/**
 * Exception for 410 Gone responses
 *
 * @package Requests
 */
class Requests_Exception_HTTP_410 extends Requests_Exception_HTTP {
	/**
	 * HTTP status code
	 *
	 * @var integer
	 */
	protected $code = 410;

/**
	 * Reason phrase
	 *
	 * @var string
	 */
	protected $reason = 'Gone';
}
<?php
/**
 * Exception for 428 Precondition Required responses
 *
 * @see https://tools.ietf.org/html/rfc6585
 * @package Requests
 */

/**
 * Exception for 428 Precondition Required responses
 *
 * @see https://tools.ietf.org/html/rfc6585
 * @package Requests
 */
class Requests_Exception_HTTP_428 extends Requests_Exception_HTTP {
	/**
	 * HTTP status code
	 *
	 * @var integer
	 */
	protected $code = 428;

/**
	 * Reason phrase
	 *
	 * @var string
	 */
	protected $reason = 'Precondition Required';
}
<?php
/**
 * Exception for 409 Conflict responses
 *
 * @package Requests
 */

/**
 * Exception for 409 Conflict responses
 *
 * @package Requests
 */
class Requests_Exception_HTTP_409 extends Requests_Exception_HTTP {
	/**
	 * HTTP status code
	 *
	 * @var integer
	 */
	protected $code = 409;

/**
	 * Reason phrase
	 *
	 * @var string
	 */
	protected $reason = 'Conflict';
}
<?php
/**
 * Exception for 504 Gateway Timeout responses
 *
 * @package Requests
 */

/**
 * Exception for 504 Gateway Timeout responses
 *
 * @package Requests
 */
class Requests_Exception_HTTP_504 extends Requests_Exception_HTTP {
	/**
	 * HTTP status code
	 *
	 * @var integer
	 */
	protected $code = 504;

/**
	 * Reason phrase
	 *
	 * @var string
	 */
	protected $reason = 'Gateway Timeout';
}
<?php
/**
 * Exception for 416 Requested Range Not Satisfiable responses
 *
 * @package Requests
 */

/**
 * Exception for 416 Requested Range Not Satisfiable responses
 *
 * @package Requests
 */
class Requests_Exception_HTTP_416 extends Requests_Exception_HTTP {
	/**
	 * HTTP status code
	 *
	 * @var integer
	 */
	protected $code = 416;

/**
	 * Reason phrase
	 *
	 * @var string
	 */
	protected $reason = 'Requested Range Not Satisfiable';
}
<?php
/**
 * Exception for 405 Method Not Allowed responses
 *
 * @package Requests
 */

/**
 * Exception for 405 Method Not Allowed responses
 *
 * @package Requests
 */
class Requests_Exception_HTTP_405 extends Requests_Exception_HTTP {
	/**
	 * HTTP status code
	 *
	 * @var integer
	 */
	protected $code = 405;

/**
	 * Reason phrase
	 *
	 * @var string
	 */
	protected $reason = 'Method Not Allowed';
}
<?php
/**
 * Exception for 501 Not Implemented responses
 *
 * @package Requests
 */

/**
 * Exception for 501 Not Implemented responses
 *
 * @package Requests
 */
class Requests_Exception_HTTP_501 extends Requests_Exception_HTTP {
	/**
	 * HTTP status code
	 *
	 * @var integer
	 */
	protected $code = 501;

/**
	 * Reason phrase
	 *
	 * @var string
	 */
	protected $reason = 'Not Implemented';
}
<?php
/**
 * Exception for 505 HTTP Version Not Supported responses
 *
 * @package Requests
 */

/**
 * Exception for 505 HTTP Version Not Supported responses
 *
 * @package Requests
 */
class Requests_Exception_HTTP_505 extends Requests_Exception_HTTP {
	/**
	 * HTTP status code
	 *
	 * @var integer
	 */
	protected $code = 505;

/**
	 * Reason phrase
	 *
	 * @var string
	 */
	protected $reason = 'HTTP Version Not Supported';
}
<?php
/**
 * Exception for 418 I'm A Teapot responses
 *
 * @see https://tools.ietf.org/html/rfc2324
 * @package Requests
 */

/**
 * Exception for 418 I'm A Teapot responses
 *
 * @see https://tools.ietf.org/html/rfc2324
 * @package Requests
 */
class Requests_Exception_HTTP_418 extends Requests_Exception_HTTP {
	/**
	 * HTTP status code
	 *
	 * @var integer
	 */
	protected $code = 418;

/**
	 * Reason phrase
	 *
	 * @var string
	 */
	protected $reason = "I'm A Teapot";
}
<?php
/**
 * Exception for 407 Proxy Authentication Required responses
 *
 * @package Requests
 */

/**
 * Exception for 407 Proxy Authentication Required responses
 *
 * @package Requests
 */
class Requests_Exception_HTTP_407 extends Requests_Exception_HTTP {
	/**
	 * HTTP status code
	 *
	 * @var integer
	 */
	protected $code = 407;

/**
	 * Reason phrase
	 *
	 * @var string
	 */
	protected $reason = 'Proxy Authentication Required';
}
<?php
/**
 * Exception for 402 Payment Required responses
 *
 * @package Requests
 */

/**
 * Exception for 402 Payment Required responses
 *
 * @package Requests
 */
class Requests_Exception_HTTP_402 extends Requests_Exception_HTTP {
	/**
	 * HTTP status code
	 *
	 * @var integer
	 */
	protected $code = 402;

/**
	 * Reason phrase
	 *
	 * @var string
	 */
	protected $reason = 'Payment Required';
}
<?php
/**
 * Exception for 415 Unsupported Media Type responses
 *
 * @package Requests
 */

/**
 * Exception for 415 Unsupported Media Type responses
 *
 * @package Requests
 */
class Requests_Exception_HTTP_415 extends Requests_Exception_HTTP {
	/**
	 * HTTP status code
	 *
	 * @var integer
	 */
	protected $code = 415;

/**
	 * Reason phrase
	 *
	 * @var string
	 */
	protected $reason = 'Unsupported Media Type';
}
<?php
/**
 * Exception for 404 Not Found responses
 *
 * @package Requests
 */

/**
 * Exception for 404 Not Found responses
 *
 * @package Requests
 */
class Requests_Exception_HTTP_404 extends Requests_Exception_HTTP {
	/**
	 * HTTP status code
	 *
	 * @var integer
	 */
	protected $code = 404;

/**
	 * Reason phrase
	 *
	 * @var string
	 */
	protected $reason = 'Not Found';
}
<?php
/**
 * Exception for 408 Request Timeout responses
 *
 * @package Requests
 */

/**
 * Exception for 408 Request Timeout responses
 *
 * @package Requests
 */
class Requests_Exception_HTTP_408 extends Requests_Exception_HTTP {
	/**
	 * HTTP status code
	 *
	 * @var integer
	 */
	protected $code = 408;

/**
	 * Reason phrase
	 *
	 * @var string
	 */
	protected $reason = 'Request Timeout';
}
<?php
/**
 * Exception for 431 Request Header Fields Too Large responses
 *
 * @see https://tools.ietf.org/html/rfc6585
 * @package Requests
 */

/**
 * Exception for 431 Request Header Fields Too Large responses
 *
 * @see https://tools.ietf.org/html/rfc6585
 * @package Requests
 */
class Requests_Exception_HTTP_431 extends Requests_Exception_HTTP {
	/**
	 * HTTP status code
	 *
	 * @var integer
	 */
	protected $code = 431;

/**
	 * Reason phrase
	 *
	 * @var string
	 */
	protected $reason = 'Request Header Fields Too Large';
}
<?php
/**
 * Exception for 403 Forbidden responses
 *
 * @package Requests
 */

/**
 * Exception for 403 Forbidden responses
 *
 * @package Requests
 */
class Requests_Exception_HTTP_403 extends Requests_Exception_HTTP {
	/**
	 * HTTP status code
	 *
	 * @var integer
	 */
	protected $code = 403;

/**
	 * Reason phrase
	 *
	 * @var string
	 */
	protected $reason = 'Forbidden';
}
<?php
/**
 * Exception for 400 Bad Request responses
 *
 * @package Requests
 */

/**
 * Exception for 400 Bad Request responses
 *
 * @package Requests
 */
class Requests_Exception_HTTP_400 extends Requests_Exception_HTTP {
	/**
	 * HTTP status code
	 *
	 * @var integer
	 */
	protected $code = 400;

/**
	 * Reason phrase
	 *
	 * @var string
	 */
	protected $reason = 'Bad Request';
}
<?php
/**
 * Exception for 306 Switch Proxy responses
 *
 * @package Requests
 */

/**
 * Exception for 306 Switch Proxy responses
 *
 * @package Requests
 */
class Requests_Exception_HTTP_306 extends Requests_Exception_HTTP {
	/**
	 * HTTP status code
	 *
	 * @var integer
	 */
	protected $code = 306;

/**
	 * Reason phrase
	 *
	 * @var string
	 */
	protected $reason = 'Switch Proxy';
}
<?php
/**
 * Exception for 511 Network Authentication Required responses
 *
 * @see https://tools.ietf.org/html/rfc6585
 * @package Requests
 */

/**
 * Exception for 511 Network Authentication Required responses
 *
 * @see https://tools.ietf.org/html/rfc6585
 * @package Requests
 */
class Requests_Exception_HTTP_511 extends Requests_Exception_HTTP {
	/**
	 * HTTP status code
	 *
	 * @var integer
	 */
	protected $code = 511;

/**
	 * Reason phrase
	 *
	 * @var string
	 */
	protected $reason = 'Network Authentication Required';
}
<?php
/**
 * Exception for 503 Service Unavailable responses
 *
 * @package Requests
 */

/**
 * Exception for 503 Service Unavailable responses
 *
 * @package Requests
 */
class Requests_Exception_HTTP_503 extends Requests_Exception_HTTP {
	/**
	 * HTTP status code
	 *
	 * @var integer
	 */
	protected $code = 503;

/**
	 * Reason phrase
	 *
	 * @var string
	 */
	protected $reason = 'Service Unavailable';
}
<?php
/**
 * Exception for 401 Unauthorized responses
 *
 * @package Requests
 */

/**
 * Exception for 401 Unauthorized responses
 *
 * @package Requests
 */
class Requests_Exception_HTTP_401 extends Requests_Exception_HTTP {
	/**
	 * HTTP status code
	 *
	 * @var integer
	 */
	protected $code = 401;

/**
	 * Reason phrase
	 *
	 * @var string
	 */
	protected $reason = 'Unauthorized';
}
<?php
/**
 * Exception for 502 Bad Gateway responses
 *
 * @package Requests
 */

/**
 * Exception for 502 Bad Gateway responses
 *
 * @package Requests
 */
class Requests_Exception_HTTP_502 extends Requests_Exception_HTTP {
	/**
	 * HTTP status code
	 *
	 * @var integer
	 */
	protected $code = 502;

/**
	 * Reason phrase
	 *
	 * @var string
	 */
	protected $reason = 'Bad Gateway';
}
<?php
/**
 * Exception for 413 Request Entity Too Large responses
 *
 * @package Requests
 */

/**
 * Exception for 413 Request Entity Too Large responses
 *
 * @package Requests
 */
class Requests_Exception_HTTP_413 extends Requests_Exception_HTTP {
	/**
	 * HTTP status code
	 *
	 * @var integer
	 */
	protected $code = 413;

/**
	 * Reason phrase
	 *
	 * @var string
	 */
	protected $reason = 'Request Entity Too Large';
}
<?php
/**
 * Exception for 414 Request-URI Too Large responses
 *
 * @package Requests
 */

/**
 * Exception for 414 Request-URI Too Large responses
 *
 * @package Requests
 */
class Requests_Exception_HTTP_414 extends Requests_Exception_HTTP {
	/**
	 * HTTP status code
	 *
	 * @var integer
	 */
	protected $code = 414;

/**
	 * Reason phrase
	 *
	 * @var string
	 */
	protected $reason = 'Request-URI Too Large';
}
<?php
/**
 * Exception for 304 Not Modified responses
 *
 * @package Requests
 */

/**
 * Exception for 304 Not Modified responses
 *
 * @package Requests
 */
class Requests_Exception_HTTP_304 extends Requests_Exception_HTTP {
	/**
	 * HTTP status code
	 *
	 * @var integer
	 */
	protected $code = 304;

/**
	 * Reason phrase
	 *
	 * @var string
	 */
	protected $reason = 'Not Modified';
}
<?php
/**
 * Exception for 412 Precondition Failed responses
 *
 * @package Requests
 */

/**
 * Exception for 412 Precondition Failed responses
 *
 * @package Requests
 */
class Requests_Exception_HTTP_412 extends Requests_Exception_HTTP {
	/**
	 * HTTP status code
	 *
	 * @var integer
	 */
	protected $code = 412;

/**
	 * Reason phrase
	 *
	 * @var string
	 */
	protected $reason = 'Precondition Failed';
}
<?php
/**
 * Exception for 305 Use Proxy responses
 *
 * @package Requests
 */

/**
 * Exception for 305 Use Proxy responses
 *
 * @package Requests
 */
class Requests_Exception_HTTP_305 extends Requests_Exception_HTTP {
	/**
	 * HTTP status code
	 *
	 * @var integer
	 */
	protected $code = 305;

/**
	 * Reason phrase
	 *
	 * @var string
	 */
	protected $reason = 'Use Proxy';
}
<?php
/**
 * Exception for 500 Internal Server Error responses
 *
 * @package Requests
 */

/**
 * Exception for 500 Internal Server Error responses
 *
 * @package Requests
 */
class Requests_Exception_HTTP_500 extends Requests_Exception_HTTP {
	/**
	 * HTTP status code
	 *
	 * @var integer
	 */
	protected $code = 500;

/**
	 * Reason phrase
	 *
	 * @var string
	 */
	protected $reason = 'Internal Server Error';
}
<?php
/**
 * Exception for 411 Length Required responses
 *
 * @package Requests
 */

/**
 * Exception for 411 Length Required responses
 *
 * @package Requests
 */
class Requests_Exception_HTTP_411 extends Requests_Exception_HTTP {
	/**
	 * HTTP status code
	 *
	 * @var integer
	 */
	protected $code = 411;

/**
	 * Reason phrase
	 *
	 * @var string
	 */
	protected $reason = 'Length Required';
}
<?php
/**
 * Exception for 429 Too Many Requests responses
 *
 * @see https://tools.ietf.org/html/draft-nottingham-http-new-status-04
 * @package Requests
 */

/**
 * Exception for 429 Too Many Requests responses
 *
 * @see https://tools.ietf.org/html/draft-nottingham-http-new-status-04
 * @package Requests
 */
class Requests_Exception_HTTP_429 extends Requests_Exception_HTTP {
	/**
	 * HTTP status code
	 *
	 * @var integer
	 */
	protected $code = 429;

/**
	 * Reason phrase
	 *
	 * @var string
	 */
	protected $reason = 'Too Many Requests';
}
<?php
/**
 * Exception for 406 Not Acceptable responses
 *
 * @package Requests
 */

/**
 * Exception for 406 Not Acceptable responses
 *
 * @package Requests
 */
class Requests_Exception_HTTP_406 extends Requests_Exception_HTTP {
	/**
	 * HTTP status code
	 *
	 * @var integer
	 */
	protected $code = 406;

/**
	 * Reason phrase
	 *
	 * @var string
	 */
	protected $reason = 'Not Acceptable';
}
<?php
/**
 * Exception for 417 Expectation Failed responses
 *
 * @package Requests
 */

/**
 * Exception for 417 Expectation Failed responses
 *
 * @package Requests
 */
class Requests_Exception_HTTP_417 extends Requests_Exception_HTTP {
	/**
	 * HTTP status code
	 *
	 * @var integer
	 */
	protected $code = 417;

/**
	 * Reason phrase
	 *
	 * @var string
	 */
	protected $reason = 'Expectation Failed';
}
<?php

class Requests_Exception_Transport extends Requests_Exception {

}
<?php
/**
 * Basic Authentication provider
 *
 * @package Requests
 * @subpackage Authentication
 */

/**
 * Basic Authentication provider
 *
 * Provides a handler for Basic HTTP authentication via the Authorization
 * header.
 *
 * @package Requests
 * @subpackage Authentication
 */
class Requests_Auth_Basic implements Requests_Auth {
	/**
	 * Username
	 *
	 * @var string
	 */
	public $user;

/**
	 * Password
	 *
	 * @var string
	 */
	public $pass;

/**
	 * Constructor
	 *
	 * @throws Requests_Exception On incorrect number of arguments (`authbasicbadargs`)
	 * @param array|null $args Array of user and password. Must have exactly two elements
	 */
	public function __construct($args = null) {
		if (is_array($args)) {
			if (count($args) !== 2) {
				throw new Requests_Exception('Invalid number of arguments', 'authbasicbadargs');
			}

list($this->user, $this->pass) = $args;
		}
	}

/**
	 * Register the necessary callbacks
	 *
	 * @see curl_before_send
	 * @see fsockopen_header
	 * @param Requests_Hooks $hooks Hook system
	 */
	public function register(Requests_Hooks $hooks) {
		$hooks->register('curl.before_send', array($this, 'curl_before_send'));
		$hooks->register('fsockopen.after_headers', array($this, 'fsockopen_header'));
	}

/**
	 * Set cURL parameters before the data is sent
	 *
	 * @param resource $handle cURL resource
	 */
	public function curl_before_send(&$handle) {
		curl_setopt($handle, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
		curl_setopt($handle, CURLOPT_USERPWD, $this->getAuthString());
	}

/**
	 * Add extra headers to the request before sending
	 *
	 * @param string $out HTTP header string
	 */
	public function fsockopen_header(&$out) {
		$out .= sprintf("Authorization: Basic %s\r\n", base64_encode($this->getAuthString()));
	}

/**
	 * Get the authentication string (user:pass)
	 *
	 * @return string
	 */
	public function getAuthString() {
		return $this->user . ':' . $this->pass;
	}
}
<?php
/**
 * Authentication provider interface
 *
 * @package Requests
 * @subpackage Authentication
 */

/**
 * Authentication provider interface
 *
 * Implement this interface to act as an authentication provider.
 *
 * Parameters should be passed via the constructor where possible, as this
 * makes it much easier for users to use your provider.
 *
 * @see Requests_Hooks
 * @package Requests
 * @subpackage Authentication
 */
interface Requests_Auth {
	/**
	 * Register hooks as needed
	 *
	 * This method is called in {@see Requests::request} when the user has set
	 * an instance as the 'auth' option. Use this callback to register all the
	 * hooks you'll need.
	 *
	 * @see Requests_Hooks::register
	 * @param Requests_Hooks $hooks Hook system
	 */
	public function register(Requests_Hooks $hooks);
}
<?php
/**
 * HTTP Proxy connection interface
 *
 * @package Requests
 * @subpackage Proxy
 * @since 1.6
 */

/**
 * HTTP Proxy connection interface
 *
 * Provides a handler for connection via an HTTP proxy
 *
 * @package Requests
 * @subpackage Proxy
 * @since 1.6
 */
class Requests_Proxy_HTTP implements Requests_Proxy {
	/**
	 * Proxy host and port
	 *
	 * Notation: "host:port" (eg 127.0.0.1:8080 or someproxy.com:3128)
	 *
	 * @var string
	 */
	public $proxy;

/**
	 * Username
	 *
	 * @var string
	 */
	public $user;

/**
	 * Password
	 *
	 * @var string
	 */
	public $pass;

/**
	 * Do we need to authenticate? (ie username & password have been provided)
	 *
	 * @var boolean
	 */
	public $use_authentication;

/**
	 * Constructor
	 *
	 * @since 1.6
	 * @throws Requests_Exception On incorrect number of arguments (`authbasicbadargs`)
	 * @param array|null $args Array of user and password. Must have exactly two elements
	 */
	public function __construct($args = null) {
		if (is_string($args)) {
			$this->proxy = $args;
		}
		elseif (is_array($args)) {
			if (count($args) === 1) {
				list($this->proxy) = $args;
			}
			elseif (count($args) === 3) {
				list($this->proxy, $this->user, $this->pass) = $args;
				$this->use_authentication                    = true;
			}
			else {
				throw new Requests_Exception('Invalid number of arguments', 'proxyhttpbadargs');
			}
		}
	}

/**
	 * Register the necessary callbacks
	 *
	 * @since 1.6
	 * @see curl_before_send
	 * @see fsockopen_remote_socket
	 * @see fsockopen_remote_host_path
	 * @see fsockopen_header
	 * @param Requests_Hooks $hooks Hook system
	 */
	public function register(Requests_Hooks $hooks) {
		$hooks->register('curl.before_send', array($this, 'curl_before_send'));

$hooks->register('fsockopen.remote_socket', array($this, 'fsockopen_remote_socket'));
		$hooks->register('fsockopen.remote_host_path', array($this, 'fsockopen_remote_host_path'));
		if ($this->use_authentication) {
			$hooks->register('fsockopen.after_headers', array($this, 'fsockopen_header'));
		}
	}

/**
	 * Set cURL parameters before the data is sent
	 *
	 * @since 1.6
	 * @param resource $handle cURL resource
	 */
	public function curl_before_send(&$handle) {
		curl_setopt($handle, CURLOPT_PROXYTYPE, CURLPROXY_HTTP);
		curl_setopt($handle, CURLOPT_PROXY, $this->proxy);

if ($this->use_authentication) {
			curl_setopt($handle, CURLOPT_PROXYAUTH, CURLAUTH_ANY);
			curl_setopt($handle, CURLOPT_PROXYUSERPWD, $this->get_auth_string());
		}
	}

/**
	 * Alter remote socket information before opening socket connection
	 *
	 * @since 1.6
	 * @param string $remote_socket Socket connection string
	 */
	public function fsockopen_remote_socket(&$remote_socket) {
		$remote_socket = $this->proxy;
	}

/**
	 * Alter remote path before getting stream data
	 *
	 * @since 1.6
	 * @param string $path Path to send in HTTP request string ("GET ...")
	 * @param string $url Full URL we're requesting
	 */
	public function fsockopen_remote_host_path(&$path, $url) {
		$path = $url;
	}

/**
	 * Add extra headers to the request before sending
	 *
	 * @since 1.6
	 * @param string $out HTTP header string
	 */
	public function fsockopen_header(&$out) {
		$out .= sprintf("Proxy-Authorization: Basic %s\r\n", base64_encode($this->get_auth_string()));
	}

/**
	 * Get the authentication string (user:pass)
	 *
	 * @since 1.6
	 * @return string
	 */
	public function get_auth_string() {
		return $this->user . ':' . $this->pass;
	}
}
<?php
/**
 * Class to validate and to work with IPv6 addresses
 *
 * @package Requests
 * @subpackage Utilities
 */

/**
 * Class to validate and to work with IPv6 addresses
 *
 * This was originally based on the PEAR class of the same name, but has been
 * entirely rewritten.
 *
 * @package Requests
 * @subpackage Utilities
 */
class Requests_IPv6 {
	/**
	 * Uncompresses an IPv6 address
	 *
	 * RFC 4291 allows you to compress consecutive zero pieces in an address to
	 * '::'. This method expects a valid IPv6 address and expands the '::' to
	 * the required number of zero pieces.
	 *
	 * Example:  FF01::101   ->  FF01:0:0:0:0:0:0:101
	 *           ::1         ->  0:0:0:0:0:0:0:1
	 *
	 * @author Alexander Merz <alexander.merz@web.de>
	 * @author elfrink at introweb dot nl
	 * @author Josh Peck <jmp at joshpeck dot org>
	 * @copyright 2003-2005 The PHP Group
	 * @license http://www.opensource.org/licenses/bsd-license.php
	 * @param string $ip An IPv6 address
	 * @return string The uncompressed IPv6 address
	 */
	public static function uncompress($ip) {
		if (substr_count($ip, '::') !== 1) {
			return $ip;
		}

list($ip1, $ip2) = explode('::', $ip);
		$c1              = ($ip1 === '') ? -1 : substr_count($ip1, ':');
		$c2              = ($ip2 === '') ? -1 : substr_count($ip2, ':');

if (strpos($ip2, '.') !== false) {
			$c2++;
		}
		// ::
		if ($c1 === -1 && $c2 === -1) {
			$ip = '0:0:0:0:0:0:0:0';
		}
		// ::xxx
		elseif ($c1 === -1) {
			$fill = str_repeat('0:', 7 - $c2);
			$ip   = str_replace('::', $fill, $ip);
		}
		// xxx::
		elseif ($c2 === -1) {
			$fill = str_repeat(':0', 7 - $c1);
			$ip   = str_replace('::', $fill, $ip);
		}
		// xxx::xxx
		else {
			$fill = ':' . str_repeat('0:', 6 - $c2 - $c1);
			$ip   = str_replace('::', $fill, $ip);
		}
		return $ip;
	}

/**
	 * Compresses an IPv6 address
	 *
	 * RFC 4291 allows you to compress consecutive zero pieces in an address to
	 * '::'. This method expects a valid IPv6 address and compresses consecutive
	 * zero pieces to '::'.
	 *
	 * Example:  FF01:0:0:0:0:0:0:101   ->  FF01::101
	 *           0:0:0:0:0:0:0:1        ->  ::1
	 *
	 * @see uncompress()
	 * @param string $ip An IPv6 address
	 * @return string The compressed IPv6 address
	 */
	public static function compress($ip) {
		// Prepare the IP to be compressed
		$ip       = self::uncompress($ip);
		$ip_parts = self::split_v6_v4($ip);

// Replace all leading zeros
		$ip_parts[0] = preg_replace('/(^|:)0+([0-9])/', '\1\2', $ip_parts[0]);

// Find bunches of zeros
		if (preg_match_all('/(?:^|:)(?:0(?::|$))+/', $ip_parts[0], $matches, PREG_OFFSET_CAPTURE)) {
			$max = 0;
			$pos = null;
			foreach ($matches[0] as $match) {
				if (strlen($match[0]) > $max) {
					$max = strlen($match[0]);
					$pos = $match[1];
				}
			}

$ip_parts[0] = substr_replace($ip_parts[0], '::', $pos, $max);
		}

if ($ip_parts[1] !== '') {
			return implode(':', $ip_parts);
		}
		else {
			return $ip_parts[0];
		}
	}

/**
	 * Splits an IPv6 address into the IPv6 and IPv4 representation parts
	 *
	 * RFC 4291 allows you to represent the last two parts of an IPv6 address
	 * using the standard IPv4 representation
	 *
	 * Example:  0:0:0:0:0:0:13.1.68.3
	 *           0:0:0:0:0:FFFF:129.144.52.38
	 *
	 * @param string $ip An IPv6 address
	 * @return string[] [0] contains the IPv6 represented part, and [1] the IPv4 represented part
	 */
	protected static function split_v6_v4($ip) {
		if (strpos($ip, '.') !== false) {
			$pos       = strrpos($ip, ':');
			$ipv6_part = substr($ip, 0, $pos);
			$ipv4_part = substr($ip, $pos + 1);
			return array($ipv6_part, $ipv4_part);
		}
		else {
			return array($ip, '');
		}
	}

/**
	 * Checks an IPv6 address
	 *
	 * Checks if the given IP is a valid IPv6 address
	 *
	 * @param string $ip An IPv6 address
	 * @return bool true if $ip is a valid IPv6 address
	 */
	public static function check_ipv6($ip) {
		$ip                = self::uncompress($ip);
		list($ipv6, $ipv4) = self::split_v6_v4($ip);
		$ipv6              = explode(':', $ipv6);
		$ipv4              = explode('.', $ipv4);
		if (count($ipv6) === 8 && count($ipv4) === 1 || count($ipv6) === 6 && count($ipv4) === 4) {
			foreach ($ipv6 as $ipv6_part) {
				// The section can't be empty
				if ($ipv6_part === '') {
					return false;
				}

// Nor can it be over four characters
				if (strlen($ipv6_part) > 4) {
					return false;
				}

// Remove leading zeros (this is safe because of the above)
				$ipv6_part = ltrim($ipv6_part, '0');
				if ($ipv6_part === '') {
					$ipv6_part = '0';
				}

// Check the value is valid
				$value = hexdec($ipv6_part);
				if (dechex($value) !== strtolower($ipv6_part) || $value < 0 || $value > 0xFFFF) {
					return false;
				}
			}
			if (count($ipv4) === 4) {
				foreach ($ipv4 as $ipv4_part) {
					$value = (int) $ipv4_part;
					if ((string) $value !== $ipv4_part || $value < 0 || $value > 0xFF) {
						return false;
					}
				}
			}
			return true;
		}
		else {
			return false;
		}
	}
}
<?php
/**
 * Proxy connection interface
 *
 * @package Requests
 * @subpackage Proxy
 * @since 1.6
 */

/**
 * Proxy connection interface
 *
 * Implement this interface to handle proxy settings and authentication
 *
 * Parameters should be passed via the constructor where possible, as this
 * makes it much easier for users to use your provider.
 *
 * @see Requests_Hooks
 * @package Requests
 * @subpackage Proxy
 * @since 1.6
 */
interface Requests_Proxy {
	/**
	 * Register hooks as needed
	 *
	 * This method is called in {@see Requests::request} when the user has set
	 * an instance as the 'auth' option. Use this callback to register all the
	 * hooks you'll need.
	 *
	 * @see Requests_Hooks::register
	 * @param Requests_Hooks $hooks Hook system
	 */
	public function register(Requests_Hooks $hooks);
}
<?php

/**
 * IDNA URL encoder
 *
 * Note: Not fully compliant, as nameprep does nothing yet.
 *
 * @package Requests
 * @subpackage Utilities
 * @see https://tools.ietf.org/html/rfc3490 IDNA specification
 * @see https://tools.ietf.org/html/rfc3492 Punycode/Bootstrap specification
 */
class Requests_IDNAEncoder {
	/**
	 * ACE prefix used for IDNA
	 *
	 * @see https://tools.ietf.org/html/rfc3490#section-5
	 * @var string
	 */
	const ACE_PREFIX = 'xn--';

/**#@+
	 * Bootstrap constant for Punycode
	 *
	 * @see https://tools.ietf.org/html/rfc3492#section-5
	 * @var int
	 */
	const BOOTSTRAP_BASE         = 36;
	const BOOTSTRAP_TMIN         = 1;
	const BOOTSTRAP_TMAX         = 26;
	const BOOTSTRAP_SKEW         = 38;
	const BOOTSTRAP_DAMP         = 700;
	const BOOTSTRAP_INITIAL_BIAS = 72;
	const BOOTSTRAP_INITIAL_N    = 128;
	/**#@-*/

/**
	 * Encode a hostname using Punycode
	 *
	 * @param string $string Hostname
	 * @return string Punycode-encoded hostname
	 */
	public static function encode($string) {
		$parts = explode('.', $string);
		foreach ($parts as &$part) {
			$part = self::to_ascii($part);
		}
		return implode('.', $parts);
	}

/**
	 * Convert a UTF-8 string to an ASCII string using Punycode
	 *
	 * @throws Requests_Exception Provided string longer than 64 ASCII characters (`idna.provided_too_long`)
	 * @throws Requests_Exception Prepared string longer than 64 ASCII characters (`idna.prepared_too_long`)
	 * @throws Requests_Exception Provided string already begins with xn-- (`idna.provided_is_prefixed`)
	 * @throws Requests_Exception Encoded string longer than 64 ASCII characters (`idna.encoded_too_long`)
	 *
	 * @param string $string ASCII or UTF-8 string (max length 64 characters)
	 * @return string ASCII string
	 */
	public static function to_ascii($string) {
		// Step 1: Check if the string is already ASCII
		if (self::is_ascii($string)) {
			// Skip to step 7
			if (strlen($string) < 64) {
				return $string;
			}

throw new Requests_Exception('Provided string is too long', 'idna.provided_too_long', $string);
		}

// Step 2: nameprep
		$string = self::nameprep($string);

// Step 3: UseSTD3ASCIIRules is false, continue
		// Step 4: Check if it's ASCII now
		if (self::is_ascii($string)) {
			// Skip to step 7
			if (strlen($string) < 64) {
				return $string;
			}

throw new Requests_Exception('Prepared string is too long', 'idna.prepared_too_long', $string);
		}

// Step 5: Check ACE prefix
		if (strpos($string, self::ACE_PREFIX) === 0) {
			throw new Requests_Exception('Provided string begins with ACE prefix', 'idna.provided_is_prefixed', $string);
		}

// Step 6: Encode with Punycode
		$string = self::punycode_encode($string);

// Step 7: Prepend ACE prefix
		$string = self::ACE_PREFIX . $string;

// Step 8: Check size
		if (strlen($string) < 64) {
			return $string;
		}

throw new Requests_Exception('Encoded string is too long', 'idna.encoded_too_long', $string);
	}

/**
	 * Check whether a given string contains only ASCII characters
	 *
	 * @internal (Testing found regex was the fastest implementation)
	 *
	 * @param string $string
	 * @return bool Is the string ASCII-only?
	 */
	protected static function is_ascii($string) {
		return (preg_match('/(?:[^\x00-\x7F])/', $string) !== 1);
	}

/**
	 * Prepare a string for use as an IDNA name
	 *
	 * @todo Implement this based on RFC 3491 and the newer 5891
	 * @param string $string
	 * @return string Prepared string
	 */
	protected static function nameprep($string) {
		return $string;
	}

/**
	 * Convert a UTF-8 string to a UCS-4 codepoint array
	 *
	 * Based on Requests_IRI::replace_invalid_with_pct_encoding()
	 *
	 * @throws Requests_Exception Invalid UTF-8 codepoint (`idna.invalidcodepoint`)
	 * @param string $input
	 * @return array Unicode code points
	 */
	protected static function utf8_to_codepoints($input) {
		$codepoints = array();

// Get number of bytes
		$strlen = strlen($input);

// phpcs:ignore Generic.CodeAnalysis.JumbledIncrementer -- This is a deliberate choice.
		for ($position = 0; $position < $strlen; $position++) {
			$value = ord($input[$position]);

// One byte sequence:
			if ((~$value & 0x80) === 0x80) {
				$character = $value;
				$length    = 1;
				$remaining = 0;
			}
			// Two byte sequence:
			elseif (($value & 0xE0) === 0xC0) {
				$character = ($value & 0x1F) << 6;
				$length    = 2;
				$remaining = 1;
			}
			// Three byte sequence:
			elseif (($value & 0xF0) === 0xE0) {
				$character = ($value & 0x0F) << 12;
				$length    = 3;
				$remaining = 2;
			}
			// Four byte sequence:
			elseif (($value & 0xF8) === 0xF0) {
				$character = ($value & 0x07) << 18;
				$length    = 4;
				$remaining = 3;
			}
			// Invalid byte:
			else {
				throw new Requests_Exception('Invalid Unicode codepoint', 'idna.invalidcodepoint', $value);
			}

if ($remaining > 0) {
				if ($position + $length > $strlen) {
					throw new Requests_Exception('Invalid Unicode codepoint', 'idna.invalidcodepoint', $character);
				}
				for ($position++; $remaining > 0; $position++) {
					$value = ord($input[$position]);

// If it is invalid, count the sequence as invalid and reprocess the current byte:
					if (($value & 0xC0) !== 0x80) {
						throw new Requests_Exception('Invalid Unicode codepoint', 'idna.invalidcodepoint', $character);
					}

--$remaining;
					$character |= ($value & 0x3F) << ($remaining * 6);
				}
				$position--;
			}

if (// Non-shortest form sequences are invalid
				$length > 1 && $character <= 0x7F
				|| $length > 2 && $character <= 0x7FF
				|| $length > 3 && $character <= 0xFFFF
				// Outside of range of ucschar codepoints
				// Noncharacters
				|| ($character & 0xFFFE) === 0xFFFE
				|| $character >= 0xFDD0 && $character <= 0xFDEF
				|| (
					// Everything else not in ucschar
					$character > 0xD7FF && $character < 0xF900
					|| $character < 0x20
					|| $character > 0x7E && $character < 0xA0
					|| $character > 0xEFFFD
				)
			) {
				throw new Requests_Exception('Invalid Unicode codepoint', 'idna.invalidcodepoint', $character);
			}

$codepoints[] = $character;
		}

return $codepoints;
	}

/**
	 * RFC3492-compliant encoder
	 *
	 * @internal Pseudo-code from Section 6.3 is commented with "#" next to relevant code
	 * @throws Requests_Exception On character outside of the domain (never happens with Punycode) (`idna.character_outside_domain`)
	 *
	 * @param string $input UTF-8 encoded string to encode
	 * @return string Punycode-encoded string
	 */
	public static function punycode_encode($input) {
		$output = '';
		// let n = initial_n
		$n = self::BOOTSTRAP_INITIAL_N;
		// let delta = 0
		$delta = 0;
		// let bias = initial_bias
		$bias = self::BOOTSTRAP_INITIAL_BIAS;
		// let h = b = the number of basic code points in the input
		$h = 0;
		$b = 0; // see loop
		// copy them to the output in order
		$codepoints = self::utf8_to_codepoints($input);
		$extended   = array();

foreach ($codepoints as $char) {
			if ($char < 128) {
				// Character is valid ASCII
				// TODO: this should also check if it's valid for a URL
				$output .= chr($char);
				$h++;
			}
			// Check if the character is non-ASCII, but below initial n
			// This never occurs for Punycode, so ignore in coverage
			// @codeCoverageIgnoreStart
			elseif ($char < $n) {
				throw new Requests_Exception('Invalid character', 'idna.character_outside_domain', $char);
			}
			// @codeCoverageIgnoreEnd
			else {
				$extended[$char] = true;
			}
		}
		$extended = array_keys($extended);
		sort($extended);
		$b = $h;
		// [copy them] followed by a delimiter if b > 0
		if (strlen($output) > 0) {
			$output .= '-';
		}
		// {if the input contains a non-basic code point < n then fail}
		// while h < length(input) do begin
		$codepointcount = count($codepoints);
		while ($h < $codepointcount) {
			// let m = the minimum code point >= n in the input
			$m = array_shift($extended);
			//printf('next code point to insert is %s' . PHP_EOL, dechex($m));
			// let delta = delta + (m - n) * (h + 1), fail on overflow
			$delta += ($m - $n) * ($h + 1);
			// let n = m
			$n = $m;
			// for each code point c in the input (in order) do begin
			for ($num = 0; $num < $codepointcount; $num++) {
				$c = $codepoints[$num];
				// if c < n then increment delta, fail on overflow
				if ($c < $n) {
					$delta++;
				}
				// if c == n then begin
				elseif ($c === $n) {
					// let q = delta
					$q = $delta;
					// for k = base to infinity in steps of base do begin
					for ($k = self::BOOTSTRAP_BASE; ; $k += self::BOOTSTRAP_BASE) {
						// let t = tmin if k <= bias {+ tmin}, or
						//     tmax if k >= bias + tmax, or k - bias otherwise
						if ($k <= ($bias + self::BOOTSTRAP_TMIN)) {
							$t = self::BOOTSTRAP_TMIN;
						}
						elseif ($k >= ($bias + self::BOOTSTRAP_TMAX)) {
							$t = self::BOOTSTRAP_TMAX;
						}
						else {
							$t = $k - $bias;
						}
						// if q < t then break
						if ($q < $t) {
							break;
						}
						// output the code point for digit t + ((q - t) mod (base - t))
						$digit   = $t + (($q - $t) % (self::BOOTSTRAP_BASE - $t));
						$output .= self::digit_to_char($digit);
						// let q = (q - t) div (base - t)
						$q = floor(($q - $t) / (self::BOOTSTRAP_BASE - $t));
					} // end
					// output the code point for digit q
					$output .= self::digit_to_char($q);
					// let bias = adapt(delta, h + 1, test h equals b?)
					$bias = self::adapt($delta, $h + 1, $h === $b);
					// let delta = 0
					$delta = 0;
					// increment h
					$h++;
				} // end
			} // end
			// increment delta and n
			$delta++;
			$n++;
		} // end

return $output;
	}

/**
	 * Convert a digit to its respective character
	 *
	 * @see https://tools.ietf.org/html/rfc3492#section-5
	 * @throws Requests_Exception On invalid digit (`idna.invalid_digit`)
	 *
	 * @param int $digit Digit in the range 0-35
	 * @return string Single character corresponding to digit
	 */
	protected static function digit_to_char($digit) {
		// @codeCoverageIgnoreStart
		// As far as I know, this never happens, but still good to be sure.
		if ($digit < 0 || $digit > 35) {
			throw new Requests_Exception(sprintf('Invalid digit %d', $digit), 'idna.invalid_digit', $digit);
		}
		// @codeCoverageIgnoreEnd
		$digits = 'abcdefghijklmnopqrstuvwxyz0123456789';
		return substr($digits, $digit, 1);
	}

/**
	 * Adapt the bias
	 *
	 * @see https://tools.ietf.org/html/rfc3492#section-6.1
	 * @param int $delta
	 * @param int $numpoints
	 * @param bool $firsttime
	 * @return int New bias
	 *
	 * function adapt(delta,numpoints,firsttime):
	 */
	protected static function adapt($delta, $numpoints, $firsttime) {
		// if firsttime then let delta = delta div damp
		if ($firsttime) {
			$delta = floor($delta / self::BOOTSTRAP_DAMP);
		}
		// else let delta = delta div 2
		else {
			$delta = floor($delta / 2);
		}
		// let delta = delta + (delta div numpoints)
		$delta += floor($delta / $numpoints);
		// let k = 0
		$k = 0;
		// while delta > ((base - tmin) * tmax) div 2 do begin
		$max = floor(((self::BOOTSTRAP_BASE - self::BOOTSTRAP_TMIN) * self::BOOTSTRAP_TMAX) / 2);
		while ($delta > $max) {
			// let delta = delta div (base - tmin)
			$delta = floor($delta / (self::BOOTSTRAP_BASE - self::BOOTSTRAP_TMIN));
			// let k = k + base
			$k += self::BOOTSTRAP_BASE;
		} // end
		// return k + (((base - tmin + 1) * delta) div (delta + skew))
		return $k + floor(((self::BOOTSTRAP_BASE - self::BOOTSTRAP_TMIN + 1) * $delta) / ($delta + self::BOOTSTRAP_SKEW));
	}
}
<?php
/**
 * Exception for HTTP requests
 *
 * @package Requests
 */

/**
 * Exception for HTTP requests
 *
 * @package Requests
 */
class Requests_Exception extends Exception {
	/**
	 * Type of exception
	 *
	 * @var string
	 */
	protected $type;

/**
	 * Data associated with the exception
	 *
	 * @var mixed
	 */
	protected $data;

/**
	 * Create a new exception
	 *
	 * @param string $message Exception message
	 * @param string $type Exception type
	 * @param mixed $data Associated data
	 * @param integer $code Exception numerical code, if applicable
	 */
	public function __construct($message, $type, $data = null, $code = 0) {
		parent::__construct($message, $code);

$this->type = $type;
		$this->data = $data;
	}

/**
	 * Like {@see getCode()}, but a string code.
	 *
	 * @codeCoverageIgnore
	 * @return string
	 */
	public function getType() {
		return $this->type;
	}

/**
	 * Gives any relevant data
	 *
	 * @codeCoverageIgnore
	 * @return mixed
	 */
	public function getData() {
		return $this->data;
	}
}
<?php
/**
 * Cookie storage object
 *
 * @package Requests
 * @subpackage Cookies
 */

/**
 * Cookie storage object
 *
 * @package Requests
 * @subpackage Cookies
 */
class Requests_Cookie {
	/**
	 * Cookie name.
	 *
	 * @var string
	 */
	public $name;

/**
	 * Cookie value.
	 *
	 * @var string
	 */
	public $value;

/**
	 * Cookie attributes
	 *
	 * Valid keys are (currently) path, domain, expires, max-age, secure and
	 * httponly.
	 *
	 * @var Requests_Utility_CaseInsensitiveDictionary|array Array-like object
	 */
	public $attributes = array();

/**
	 * Cookie flags
	 *
	 * Valid keys are (currently) creation, last-access, persistent and
	 * host-only.
	 *
	 * @var array
	 */
	public $flags = array();

/**
	 * Reference time for relative calculations
	 *
	 * This is used in place of `time()` when calculating Max-Age expiration and
	 * checking time validity.
	 *
	 * @var int
	 */
	public $reference_time = 0;

/**
	 * Create a new cookie object
	 *
	 * @param string $name
	 * @param string $value
	 * @param array|Requests_Utility_CaseInsensitiveDictionary $attributes Associative array of attribute data
	 */
	public function __construct($name, $value, $attributes = array(), $flags = array(), $reference_time = null) {
		$this->name       = $name;
		$this->value      = $value;
		$this->attributes = $attributes;
		$default_flags    = array(
			'creation'    => time(),
			'last-access' => time(),
			'persistent'  => false,
			'host-only'   => true,
		);
		$this->flags      = array_merge($default_flags, $flags);

$this->reference_time = time();
		if ($reference_time !== null) {
			$this->reference_time = $reference_time;
		}

$this->normalize();
	}

/**
	 * Check if a cookie is expired.
	 *
	 * Checks the age against $this->reference_time to determine if the cookie
	 * is expired.
	 *
	 * @return boolean True if expired, false if time is valid.
	 */
	public function is_expired() {
		// RFC6265, s. 4.1.2.2:
		// If a cookie has both the Max-Age and the Expires attribute, the Max-
		// Age attribute has precedence and controls the expiration date of the
		// cookie.
		if (isset($this->attributes['max-age'])) {
			$max_age = $this->attributes['max-age'];
			return $max_age < $this->reference_time;
		}

if (isset($this->attributes['expires'])) {
			$expires = $this->attributes['expires'];
			return $expires < $this->reference_time;
		}

return false;
	}

/**
	 * Check if a cookie is valid for a given URI
	 *
	 * @param Requests_IRI $uri URI to check
	 * @return boolean Whether the cookie is valid for the given URI
	 */
	public function uri_matches(Requests_IRI $uri) {
		if (!$this->domain_matches($uri->host)) {
			return false;
		}

if (!$this->path_matches($uri->path)) {
			return false;
		}

return empty($this->attributes['secure']) || $uri->scheme === 'https';
	}

/**
	 * Check if a cookie is valid for a given domain
	 *
	 * @param string $string Domain to check
	 * @return boolean Whether the cookie is valid for the given domain
	 */
	public function domain_matches($string) {
		if (!isset($this->attributes['domain'])) {
			// Cookies created manually; cookies created by Requests will set
			// the domain to the requested domain
			return true;
		}

$domain_string = $this->attributes['domain'];
		if ($domain_string === $string) {
			// The domain string and the string are identical.
			return true;
		}

// If the cookie is marked as host-only and we don't have an exact
		// match, reject the cookie
		if ($this->flags['host-only'] === true) {
			return false;
		}

if (strlen($string) <= strlen($domain_string)) {
			// For obvious reasons, the string cannot be a suffix if the domain
			// is shorter than the domain string
			return false;
		}

if (substr($string, -1 * strlen($domain_string)) !== $domain_string) {
			// The domain string should be a suffix of the string.
			return false;
		}

$prefix = substr($string, 0, strlen($string) - strlen($domain_string));
		if (substr($prefix, -1) !== '.') {
			// The last character of the string that is not included in the
			// domain string should be a %x2E (".") character.
			return false;
		}

// The string should be a host name (i.e., not an IP address).
		return !preg_match('#^(.+\.)\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$#', $string);
	}

/**
	 * Check if a cookie is valid for a given path
	 *
	 * From the path-match check in RFC 6265 section 5.1.4
	 *
	 * @param string $request_path Path to check
	 * @return boolean Whether the cookie is valid for the given path
	 */
	public function path_matches($request_path) {
		if (empty($request_path)) {
			// Normalize empty path to root
			$request_path = '/';
		}

if (!isset($this->attributes['path'])) {
			// Cookies created manually; cookies created by Requests will set
			// the path to the requested path
			return true;
		}

$cookie_path = $this->attributes['path'];

if ($cookie_path === $request_path) {
			// The cookie-path and the request-path are identical.
			return true;
		}

if (strlen($request_path) > strlen($cookie_path) && substr($request_path, 0, strlen($cookie_path)) === $cookie_path) {
			if (substr($cookie_path, -1) === '/') {
				// The cookie-path is a prefix of the request-path, and the last
				// character of the cookie-path is %x2F ("/").
				return true;
			}

if (substr($request_path, strlen($cookie_path), 1) === '/') {
				// The cookie-path is a prefix of the request-path, and the
				// first character of the request-path that is not included in
				// the cookie-path is a %x2F ("/") character.
				return true;
			}
		}

return false;
	}

/**
	 * Normalize cookie and attributes
	 *
	 * @return boolean Whether the cookie was successfully normalized
	 */
	public function normalize() {
		foreach ($this->attributes as $key => $value) {
			$orig_value = $value;
			$value      = $this->normalize_attribute($key, $value);
			if ($value === null) {
				unset($this->attributes[$key]);
				continue;
			}

if ($value !== $orig_value) {
				$this->attributes[$key] = $value;
			}
		}

return true;
	}

/**
	 * Parse an individual cookie attribute
	 *
	 * Handles parsing individual attributes from the cookie values.
	 *
	 * @param string $name Attribute name
	 * @param string|boolean $value Attribute value (string value, or true if empty/flag)
	 * @return mixed Value if available, or null if the attribute value is invalid (and should be skipped)
	 */
	protected function normalize_attribute($name, $value) {
		switch (strtolower($name)) {
			case 'expires':
				// Expiration parsing, as per RFC 6265 section 5.2.1
				if (is_int($value)) {
					return $value;
				}

$expiry_time = strtotime($value);
				if ($expiry_time === false) {
					return null;
				}

return $expiry_time;

case 'max-age':
				// Expiration parsing, as per RFC 6265 section 5.2.2
				if (is_int($value)) {
					return $value;
				}

// Check that we have a valid age
				if (!preg_match('/^-?\d+$/', $value)) {
					return null;
				}

$delta_seconds = (int) $value;
				if ($delta_seconds <= 0) {
					$expiry_time = 0;
				}
				else {
					$expiry_time = $this->reference_time + $delta_seconds;
				}

return $expiry_time;

case 'domain':
				// Domains are not required as per RFC 6265 section 5.2.3
				if (empty($value)) {
					return null;
				}

// Domain normalization, as per RFC 6265 section 5.2.3
				if ($value[0] === '.') {
					$value = substr($value, 1);
				}

return $value;

default:
				return $value;
		}
	}

/**
	 * Format a cookie for a Cookie header
	 *
	 * This is used when sending cookies to a server.
	 *
	 * @return string Cookie formatted for Cookie header
	 */
	public function format_for_header() {
		return sprintf('%s=%s', $this->name, $this->value);
	}

/**
	 * Format a cookie for a Cookie header
	 *
	 * @codeCoverageIgnore
	 * @deprecated Use {@see Requests_Cookie::format_for_header}
	 * @return string
	 */
	public function formatForHeader() {
		return $this->format_for_header();
	}

/**
	 * Format a cookie for a Set-Cookie header
	 *
	 * This is used when sending cookies to clients. This isn't really
	 * applicable to client-side usage, but might be handy for debugging.
	 *
	 * @return string Cookie formatted for Set-Cookie header
	 */
	public function format_for_set_cookie() {
		$header_value = $this->format_for_header();
		if (!empty($this->attributes)) {
			$parts = array();
			foreach ($this->attributes as $key => $value) {
				// Ignore non-associative attributes
				if (is_numeric($key)) {
					$parts[] = $value;
				}
				else {
					$parts[] = sprintf('%s=%s', $key, $value);
				}
			}

$header_value .= '; ' . implode('; ', $parts);
		}
		return $header_value;
	}

/**
	 * Format a cookie for a Set-Cookie header
	 *
	 * @codeCoverageIgnore
	 * @deprecated Use {@see Requests_Cookie::format_for_set_cookie}
	 * @return string
	 */
	public function formatForSetCookie() {
		return $this->format_for_set_cookie();
	}

/**
	 * Get the cookie value
	 *
	 * Attributes and other data can be accessed via methods.
	 */
	public function __toString() {
		return $this->value;
	}

/**
	 * Parse a cookie string into a cookie object
	 *
	 * Based on Mozilla's parsing code in Firefox and related projects, which
	 * is an intentional deviation from RFC 2109 and RFC 2616. RFC 6265
	 * specifies some of this handling, but not in a thorough manner.
	 *
	 * @param string Cookie header value (from a Set-Cookie header)
	 * @return Requests_Cookie Parsed cookie object
	 */
	public static function parse($string, $name = '', $reference_time = null) {
		$parts   = explode(';', $string);
		$kvparts = array_shift($parts);

if (!empty($name)) {
			$value = $string;
		}
		elseif (strpos($kvparts, '=') === false) {
			// Some sites might only have a value without the equals separator.
			// Deviate from RFC 6265 and pretend it was actually a blank name
			// (`=foo`)
			//
			// https://bugzilla.mozilla.org/show_bug.cgi?id=169091
			$name  = '';
			$value = $kvparts;
		}
		else {
			list($name, $value) = explode('=', $kvparts, 2);
		}
		$name  = trim($name);
		$value = trim($value);

// Attribute key are handled case-insensitively
		$attributes = new Requests_Utility_CaseInsensitiveDictionary();

if (!empty($parts)) {
			foreach ($parts as $part) {
				if (strpos($part, '=') === false) {
					$part_key   = $part;
					$part_value = true;
				}
				else {
					list($part_key, $part_value) = explode('=', $part, 2);
					$part_value                  = trim($part_value);
				}

$part_key              = trim($part_key);
				$attributes[$part_key] = $part_value;
			}
		}

return new Requests_Cookie($name, $value, $attributes, array(), $reference_time);
	}

/**
	 * Parse all Set-Cookie headers from request headers
	 *
	 * @param Requests_Response_Headers $headers Headers to parse from
	 * @param Requests_IRI|null $origin URI for comparing cookie origins
	 * @param int|null $time Reference time for expiration calculation
	 * @return array
	 */
	public static function parse_from_headers(Requests_Response_Headers $headers, Requests_IRI $origin = null, $time = null) {
		$cookie_headers = $headers->getValues('Set-Cookie');
		if (empty($cookie_headers)) {
			return array();
		}

$cookies = array();
		foreach ($cookie_headers as $header) {
			$parsed = self::parse($header, '', $time);

// Default domain/path attributes
			if (empty($parsed->attributes['domain']) && !empty($origin)) {
				$parsed->attributes['domain'] = $origin->host;
				$parsed->flags['host-only']   = true;
			}
			else {
				$parsed->flags['host-only'] = false;
			}

$path_is_valid = (!empty($parsed->attributes['path']) && $parsed->attributes['path'][0] === '/');
			if (!$path_is_valid && !empty($origin)) {
				$path = $origin->path;

// Default path normalization as per RFC 6265 section 5.1.4
				if (substr($path, 0, 1) !== '/') {
					// If the uri-path is empty or if the first character of
					// the uri-path is not a %x2F ("/") character, output
					// %x2F ("/") and skip the remaining steps.
					$path = '/';
				}
				elseif (substr_count($path, '/') === 1) {
					// If the uri-path contains no more than one %x2F ("/")
					// character, output %x2F ("/") and skip the remaining
					// step.
					$path = '/';
				}
				else {
					// Output the characters of the uri-path from the first
					// character up to, but not including, the right-most
					// %x2F ("/").
					$path = substr($path, 0, strrpos($path, '/'));
				}
				$parsed->attributes['path'] = $path;
			}

// Reject invalid cookie domains
			if (!empty($origin) && !$parsed->domain_matches($origin->host)) {
				continue;
			}

$cookies[$parsed->name] = $parsed;
		}

return $cookies;
	}

/**
	 * Parse all Set-Cookie headers from request headers
	 *
	 * @codeCoverageIgnore
	 * @deprecated Use {@see Requests_Cookie::parse_from_headers}
	 * @return array
	 */
	public static function parseFromHeaders(Requests_Response_Headers $headers) {
		return self::parse_from_headers($headers);
	}
}
<?php
/**
 * Session handler for persistent requests and default parameters
 *
 * @package Requests
 * @subpackage Session Handler
 */

/**
 * Session handler for persistent requests and default parameters
 *
 * Allows various options to be set as default values, and merges both the
 * options and URL properties together. A base URL can be set for all requests,
 * with all subrequests resolved from this. Base options can be set (including
 * a shared cookie jar), then overridden for individual requests.
 *
 * @package Requests
 * @subpackage Session Handler
 */
class Requests_Session {
	/**
	 * Base URL for requests
	 *
	 * URLs will be made absolute using this as the base
	 *
	 * @var string|null
	 */
	public $url = null;

/**
	 * Base headers for requests
	 *
	 * @var array
	 */
	public $headers = array();

/**
	 * Base data for requests
	 *
	 * If both the base data and the per-request data are arrays, the data will
	 * be merged before sending the request.
	 *
	 * @var array
	 */
	public $data = array();

/**
	 * Base options for requests
	 *
	 * The base options are merged with the per-request data for each request.
	 * The only default option is a shared cookie jar between requests.
	 *
	 * Values here can also be set directly via properties on the Session
	 * object, e.g. `$session->useragent = 'X';`
	 *
	 * @var array
	 */
	public $options = array();

/**
	 * Create a new session
	 *
	 * @param string|null $url Base URL for requests
	 * @param array $headers Default headers for requests
	 * @param array $data Default data for requests
	 * @param array $options Default options for requests
	 */
	public function __construct($url = null, $headers = array(), $data = array(), $options = array()) {
		$this->url     = $url;
		$this->headers = $headers;
		$this->data    = $data;
		$this->options = $options;

if (empty($this->options['cookies'])) {
			$this->options['cookies'] = new Requests_Cookie_Jar();
		}
	}

/**
	 * Get a property's value
	 *
	 * @param string $key Property key
	 * @return mixed|null Property value, null if none found
	 */
	public function __get($key) {
		if (isset($this->options[$key])) {
			return $this->options[$key];
		}

return null;
	}

/**
	 * Set a property's value
	 *
	 * @param string $key Property key
	 * @param mixed $value Property value
	 */
	public function __set($key, $value) {
		$this->options[$key] = $value;
	}

/**
	 * Remove a property's value
	 *
	 * @param string $key Property key
	 */
	public function __isset($key) {
		return isset($this->options[$key]);
	}

/**
	 * Remove a property's value
	 *
	 * @param string $key Property key
	 */
	public function __unset($key) {
		if (isset($this->options[$key])) {
			unset($this->options[$key]);
		}
	}

/**#@+
	 * @see request()
	 * @param string $url
	 * @param array $headers
	 * @param array $options
	 * @return Requests_Response
	 */
	/**
	 * Send a GET request
	 */
	public function get($url, $headers = array(), $options = array()) {
		return $this->request($url, $headers, null, Requests::GET, $options);
	}

/**
	 * Send a HEAD request
	 */
	public function head($url, $headers = array(), $options = array()) {
		return $this->request($url, $headers, null, Requests::HEAD, $options);
	}

/**
	 * Send a DELETE request
	 */
	public function delete($url, $headers = array(), $options = array()) {
		return $this->request($url, $headers, null, Requests::DELETE, $options);
	}
	/**#@-*/

/**#@+
	 * @see request()
	 * @param string $url
	 * @param array $headers
	 * @param array $data
	 * @param array $options
	 * @return Requests_Response
	 */
	/**
	 * Send a POST request
	 */
	public function post($url, $headers = array(), $data = array(), $options = array()) {
		return $this->request($url, $headers, $data, Requests::POST, $options);
	}

/**
	 * Send a PUT request
	 */
	public function put($url, $headers = array(), $data = array(), $options = array()) {
		return $this->request($url, $headers, $data, Requests::PUT, $options);
	}

/**
	 * Send a PATCH request
	 *
	 * Note: Unlike {@see post} and {@see put}, `$headers` is required, as the
	 * specification recommends that should send an ETag
	 *
	 * @link https://tools.ietf.org/html/rfc5789
	 */
	public function patch($url, $headers, $data = array(), $options = array()) {
		return $this->request($url, $headers, $data, Requests::PATCH, $options);
	}
	/**#@-*/

/**
	 * Main interface for HTTP requests
	 *
	 * This method initiates a request and sends it via a transport before
	 * parsing.
	 *
	 * @see Requests::request()
	 *
	 * @throws Requests_Exception On invalid URLs (`nonhttp`)
	 *
	 * @param string $url URL to request
	 * @param array $headers Extra headers to send with the request
	 * @param array|null $data Data to send either as a query string for GET/HEAD requests, or in the body for POST requests
	 * @param string $type HTTP request type (use Requests constants)
	 * @param array $options Options for the request (see {@see Requests::request})
	 * @return Requests_Response
	 */
	public function request($url, $headers = array(), $data = array(), $type = Requests::GET, $options = array()) {
		$request = $this->merge_request(compact('url', 'headers', 'data', 'options'));

return Requests::request($request['url'], $request['headers'], $request['data'], $type, $request['options']);
	}

/**
	 * Send multiple HTTP requests simultaneously
	 *
	 * @see Requests::request_multiple()
	 *
	 * @param array $requests Requests data (see {@see Requests::request_multiple})
	 * @param array $options Global and default options (see {@see Requests::request})
	 * @return array Responses (either Requests_Response or a Requests_Exception object)
	 */
	public function request_multiple($requests, $options = array()) {
		foreach ($requests as $key => $request) {
			$requests[$key] = $this->merge_request($request, false);
		}

$options = array_merge($this->options, $options);

// Disallow forcing the type, as that's a per request setting
		unset($options['type']);

return Requests::request_multiple($requests, $options);
	}

/**
	 * Merge a request's data with the default data
	 *
	 * @param array $request Request data (same form as {@see request_multiple})
	 * @param boolean $merge_options Should we merge options as well?
	 * @return array Request data
	 */
	protected function merge_request($request, $merge_options = true) {
		if ($this->url !== null) {
			$request['url'] = Requests_IRI::absolutize($this->url, $request['url']);
			$request['url'] = $request['url']->uri;
		}

if (empty($request['headers'])) {
			$request['headers'] = array();
		}
		$request['headers'] = array_merge($this->headers, $request['headers']);

if (empty($request['data'])) {
			if (is_array($this->data)) {
				$request['data'] = $this->data;
			}
		}
		elseif (is_array($request['data']) && is_array($this->data)) {
			$request['data'] = array_merge($this->data, $request['data']);
		}

if ($merge_options !== false) {
			$request['options'] = array_merge($this->options, $request['options']);

// Disallow forcing the type, as that's a per request setting
			unset($request['options']['type']);
		}

return $request;
	}
}
<?php
/**
 * Case-insensitive dictionary, suitable for HTTP headers
 *
 * @package Requests
 * @subpackage Utilities
 */

/**
 * Case-insensitive dictionary, suitable for HTTP headers
 *
 * @package Requests
 * @subpackage Utilities
 */
class Requests_Utility_CaseInsensitiveDictionary implements ArrayAccess, IteratorAggregate {
	/**
	 * Actual item data
	 *
	 * @var array
	 */
	protected $data = array();

/**
	 * Creates a case insensitive dictionary.
	 *
	 * @param array $data Dictionary/map to convert to case-insensitive
	 */
	public function __construct(array $data = array()) {
		foreach ($data as $key => $value) {
			$this->offsetSet($key, $value);
		}
	}

/**
	 * Check if the given item exists
	 *
	 * @param string $key Item key
	 * @return boolean Does the item exist?
	 */
	public function offsetExists($key) {
		$key = strtolower($key);
		return isset($this->data[$key]);
	}

/**
	 * Get the value for the item
	 *
	 * @param string $key Item key
	 * @return string|null Item value (null if offsetExists is false)
	 */
	public function offsetGet($key) {
		$key = strtolower($key);
		if (!isset($this->data[$key])) {
			return null;
		}

return $this->data[$key];
	}

$key              = strtolower($key);
		$this->data[$key] = $value;
	}

/**
	 * Unset the given header
	 *
	 * @param string $key
	 */
	public function offsetUnset($key) {
		unset($this->data[strtolower($key)]);
	}

/**
	 * Get an iterator for the data
	 *
	 * @return ArrayIterator
	 */
	public function getIterator() {
		return new ArrayIterator($this->data);
	}

/**
	 * Get the headers as an array
	 *
	 * @return array Header data
	 */
	public function getAll() {
		return $this->data;
	}
}
<?php
/**
 * Iterator for arrays requiring filtered values
 *
 * @package Requests
 * @subpackage Utilities
 */

/**
 * Iterator for arrays requiring filtered values
 *
 * @package Requests
 * @subpackage Utilities
 */
class Requests_Utility_FilteredIterator extends ArrayIterator {
	/**
	 * Callback to run as a filter
	 *
	 * @var callable
	 */
	protected $callback;

/**
	 * Create a new iterator
	 *
	 * @param array $data
	 * @param callable $callback Callback to be called on each value
	 */
	public function __construct($data, $callback) {
		parent::__construct($data);

$this->callback = $callback;
	}

/**
	 * Get the current item's value after filtering
	 *
	 * @return string
	 */
	public function current() {
		$value = parent::current();

if (is_callable($this->callback)) {
			$value = call_user_func($this->callback, $value);
		}

return $value;
	}

/**
	 * @inheritdoc
	 */
	public function unserialize($serialized) {}

/**
	 * @inheritdoc
	 *
	 * @phpcs:disable PHPCompatibility.FunctionNameRestrictions.NewMagicMethods.__unserializeFound
	 */
	public function __unserialize($serialized) {}

public function __wakeup() {
		unset($this->callback);
	}
}
<?php
/**
 * IRI parser/serialiser/normaliser
 *
 * @package Requests
 * @subpackage Utilities
 */

/**
 * IRI parser/serialiser/normaliser
 *
 * Copyright (c) 2007-2010, Geoffrey Sneddon and Steve Minutillo.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  * Redistributions of source code must retain the above copyright notice,
 *       this list of conditions and the following disclaimer.
 *
 *  * Redistributions in binary form must reproduce the above copyright notice,
 *       this list of conditions and the following disclaimer in the documentation
 *       and/or other materials provided with the distribution.
 *
 *  * Neither the name of the SimplePie Team nor the names of its contributors
 *       may be used to endorse or promote products derived from this software
 *       without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS AND CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 * @package Requests
 * @subpackage Utilities
 * @author Geoffrey Sneddon
 * @author Steve Minutillo
 * @copyright 2007-2009 Geoffrey Sneddon and Steve Minutillo
 * @license http://www.opensource.org/licenses/bsd-license.php
 * @link http://hg.gsnedders.com/iri/
 *
 * @property string $iri IRI we're working with
 * @property-read string $uri IRI in URI form, {@see to_uri}
 * @property string $scheme Scheme part of the IRI
 * @property string $authority Authority part, formatted for a URI (userinfo + host + port)
 * @property string $iauthority Authority part of the IRI (userinfo + host + port)
 * @property string $userinfo Userinfo part, formatted for a URI (after '://' and before '@')
 * @property string $iuserinfo Userinfo part of the IRI (after '://' and before '@')
 * @property string $host Host part, formatted for a URI
 * @property string $ihost Host part of the IRI
 * @property string $port Port part of the IRI (after ':')
 * @property string $path Path part, formatted for a URI (after first '/')
 * @property string $ipath Path part of the IRI (after first '/')
 * @property string $query Query part, formatted for a URI (after '?')
 * @property string $iquery Query part of the IRI (after '?')
 * @property string $fragment Fragment, formatted for a URI (after '#')
 * @property string $ifragment Fragment part of the IRI (after '#')
 */
class Requests_IRI {
	/**
	 * Scheme
	 *
	 * @var string|null
	 */
	protected $scheme = null;

/**
	 * User Information
	 *
	 * @var string|null
	 */
	protected $iuserinfo = null;

/**
	 * ihost
	 *
	 * @var string|null
	 */
	protected $ihost = null;

/**
	 * Port
	 *
	 * @var string|null
	 */
	protected $port = null;

/**
	 * ipath
	 *
	 * @var string
	 */
	protected $ipath = '';

/**
	 * iquery
	 *
	 * @var string|null
	 */
	protected $iquery = null;

/**
	 * ifragment|null
	 *
	 * @var string
	 */
	protected $ifragment = null;

/**
	 * Normalization database
	 *
	 * Each key is the scheme, each value is an array with each key as the IRI
	 * part and value as the default value for that part.
	 *
	 * @var array
	 */
	protected $normalization = array(
		'acap' => array(
			'port' => 674
		),
		'dict' => array(
			'port' => 2628
		),
		'file' => array(
			'ihost' => 'localhost'
		),
		'http' => array(
			'port' => 80,
		),
		'https' => array(
			'port' => 443,
		),
	);

/**
	 * Return the entire IRI when you try and read the object as a string
	 *
	 * @return string
	 */
	public function __toString() {
		return $this->get_iri();
	}

/**
	 * Overload __set() to provide access via properties
	 *
	 * @param string $name Property name
	 * @param mixed $value Property value
	 */
	public function __set($name, $value) {
		if (method_exists($this, 'set_' . $name)) {
			call_user_func(array($this, 'set_' . $name), $value);
		}
		elseif (
			   $name === 'iauthority'
			|| $name === 'iuserinfo'
			|| $name === 'ihost'
			|| $name === 'ipath'
			|| $name === 'iquery'
			|| $name === 'ifragment'
		) {
			call_user_func(array($this, 'set_' . substr($name, 1)), $value);
		}
	}

/**
	 * Overload __get() to provide access via properties
	 *
	 * @param string $name Property name
	 * @return mixed
	 */
	public function __get($name) {
		// isset() returns false for null, we don't want to do that
		// Also why we use array_key_exists below instead of isset()
		$props = get_object_vars($this);

if (
			$name === 'iri' ||
			$name === 'uri' ||
			$name === 'iauthority' ||
			$name === 'authority'
		) {
			$method = 'get_' . $name;
			$return = $this->$method();
		}
		elseif (array_key_exists($name, $props)) {
			$return = $this->$name;
		}
		// host -> ihost
		elseif (($prop = 'i' . $name) && array_key_exists($prop, $props)) {
			$name = $prop;
			$return = $this->$prop;
		}
		// ischeme -> scheme
		elseif (($prop = substr($name, 1)) && array_key_exists($prop, $props)) {
			$name = $prop;
			$return = $this->$prop;
		}
		else {
			trigger_error('Undefined property: ' . get_class($this) . '::' . $name, E_USER_NOTICE);
			$return = null;
		}

if ($return === null && isset($this->normalization[$this->scheme][$name])) {
			return $this->normalization[$this->scheme][$name];
		}
		else {
			return $return;
		}
	}

/**
	 * Overload __isset() to provide access via properties
	 *
	 * @param string $name Property name
	 * @return bool
	 */
	public function __isset($name) {
		return (method_exists($this, 'get_' . $name) || isset($this->$name));
	}

/**
	 * Overload __unset() to provide access via properties
	 *
	 * @param string $name Property name
	 */
	public function __unset($name) {
		if (method_exists($this, 'set_' . $name)) {
			call_user_func(array($this, 'set_' . $name), '');
		}
	}

/**
	 * Create a new IRI object, from a specified string
	 *
	 * @param string|null $iri
	 */
	public function __construct($iri = null) {
		$this->set_iri($iri);
	}

/**
	 * Create a new IRI object by resolving a relative IRI
	 *
	 * Returns false if $base is not absolute, otherwise an IRI.
	 *
	 * @param Requests_IRI|string $base (Absolute) Base IRI
	 * @param Requests_IRI|string $relative Relative IRI
	 * @return Requests_IRI|false
	 */
	public static function absolutize($base, $relative) {
		if (!($relative instanceof Requests_IRI)) {
			$relative = new Requests_IRI($relative);
		}
		if (!$relative->is_valid()) {
			return false;
		}
		elseif ($relative->scheme !== null) {
			return clone $relative;
		}

if (!($base instanceof Requests_IRI)) {
			$base = new Requests_IRI($base);
		}
		if ($base->scheme === null || !$base->is_valid()) {
			return false;
		}

if ($relative->get_iri() !== '') {
			if ($relative->iuserinfo !== null || $relative->ihost !== null || $relative->port !== null) {
				$target = clone $relative;
				$target->scheme = $base->scheme;
			}
			else {
				$target = new Requests_IRI;
				$target->scheme = $base->scheme;
				$target->iuserinfo = $base->iuserinfo;
				$target->ihost = $base->ihost;
				$target->port = $base->port;
				if ($relative->ipath !== '') {
					if ($relative->ipath[0] === '/') {
						$target->ipath = $relative->ipath;
					}
					elseif (($base->iuserinfo !== null || $base->ihost !== null || $base->port !== null) && $base->ipath === '') {
						$target->ipath = '/' . $relative->ipath;
					}
					elseif (($last_segment = strrpos($base->ipath, '/')) !== false) {
						$target->ipath = substr($base->ipath, 0, $last_segment + 1) . $relative->ipath;
					}
					else {
						$target->ipath = $relative->ipath;
					}
					$target->ipath = $target->remove_dot_segments($target->ipath);
					$target->iquery = $relative->iquery;
				}
				else {
					$target->ipath = $base->ipath;
					if ($relative->iquery !== null) {
						$target->iquery = $relative->iquery;
					}
					elseif ($base->iquery !== null) {
						$target->iquery = $base->iquery;
					}
				}
				$target->ifragment = $relative->ifragment;
			}
		}
		else {
			$target = clone $base;
			$target->ifragment = null;
		}
		$target->scheme_normalization();
		return $target;
	}

/**
	 * Parse an IRI into scheme/authority/path/query/fragment segments
	 *
	 * @param string $iri
	 * @return array
	 */
	protected function parse_iri($iri) {
		$iri = trim($iri, "\x20\x09\x0A\x0C\x0D");
		$has_match = preg_match('/^((?P<scheme>[^:\/?#]+):)?(\/\/(?P<authority>[^\/?#]*))?(?P<path>[^?#]*)(\?(?P<query>[^#]*))?(#(?P<fragment>.*))?$/', $iri, $match);
		if (!$has_match) {
			throw new Requests_Exception('Cannot parse supplied IRI', 'iri.cannot_parse', $iri);
		}

if ($match[1] === '') {
			$match['scheme'] = null;
		}
		if (!isset($match[3]) || $match[3] === '') {
			$match['authority'] = null;
		}
		if (!isset($match[5])) {
			$match['path'] = '';
		}
		if (!isset($match[6]) || $match[6] === '') {
			$match['query'] = null;
		}
		if (!isset($match[8]) || $match[8] === '') {
			$match['fragment'] = null;
		}
		return $match;
	}

/**
	 * Remove dot segments from a path
	 *
	 * @param string $input
	 * @return string
	 */
	protected function remove_dot_segments($input) {
		$output = '';
		while (strpos($input, './') !== false || strpos($input, '/.') !== false || $input === '.' || $input === '..') {
			// A: If the input buffer begins with a prefix of "../" or "./",
			// then remove that prefix from the input buffer; otherwise,
			if (strpos($input, '../') === 0) {
				$input = substr($input, 3);
			}
			elseif (strpos($input, './') === 0) {
				$input = substr($input, 2);
			}
			// B: if the input buffer begins with a prefix of "/./" or "/.",
			// where "." is a complete path segment, then replace that prefix
			// with "/" in the input buffer; otherwise,
			elseif (strpos($input, '/./') === 0) {
				$input = substr($input, 2);
			}
			elseif ($input === '/.') {
				$input = '/';
			}
			// C: if the input buffer begins with a prefix of "/../" or "/..",
			// where ".." is a complete path segment, then replace that prefix
			// with "/" in the input buffer and remove the last segment and its
			// preceding "/" (if any) from the output buffer; otherwise,
			elseif (strpos($input, '/../') === 0) {
				$input = substr($input, 3);
				$output = substr_replace($output, '', strrpos($output, '/'));
			}
			elseif ($input === '/..') {
				$input = '/';
				$output = substr_replace($output, '', strrpos($output, '/'));
			}
			// D: if the input buffer consists only of "." or "..", then remove
			// that from the input buffer; otherwise,
			elseif ($input === '.' || $input === '..') {
				$input = '';
			}
			// E: move the first path segment in the input buffer to the end of
			// the output buffer, including the initial "/" character (if any)
			// and any subsequent characters up to, but not including, the next
			// "/" character or the end of the input buffer
			elseif (($pos = strpos($input, '/', 1)) !== false) {
				$output .= substr($input, 0, $pos);
				$input = substr_replace($input, '', 0, $pos);
			}
			else {
				$output .= $input;
				$input = '';
			}
		}
		return $output . $input;
	}

/**
	 * Replace invalid character with percent encoding
	 *
	 * @param string $string Input string
	 * @param string $extra_chars Valid characters not in iunreserved or
	 *                            iprivate (this is ASCII-only)
	 * @param bool $iprivate Allow iprivate
	 * @return string
	 */
	protected function replace_invalid_with_pct_encoding($string, $extra_chars, $iprivate = false) {
		// Normalize as many pct-encoded sections as possible
		$string = preg_replace_callback('/(?:%[A-Fa-f0-9]{2})+/', array($this, 'remove_iunreserved_percent_encoded'), $string);

// Replace invalid percent characters
		$string = preg_replace('/%(?![A-Fa-f0-9]{2})/', '%25', $string);

// Add unreserved and % to $extra_chars (the latter is safe because all
		// pct-encoded sections are now valid).
		$extra_chars .= 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~%';

// Now replace any bytes that aren't allowed with their pct-encoded versions
		$position = 0;
		$strlen = strlen($string);
		while (($position += strspn($string, $extra_chars, $position)) < $strlen) {
			$value = ord($string[$position]);

// Start position
			$start = $position;

// By default we are valid
			$valid = true;

// No one byte sequences are valid due to the while.
			// Two byte sequence:
			if (($value & 0xE0) === 0xC0) {
				$character = ($value & 0x1F) << 6;
				$length = 2;
				$remaining = 1;
			}
			// Three byte sequence:
			elseif (($value & 0xF0) === 0xE0) {
				$character = ($value & 0x0F) << 12;
				$length = 3;
				$remaining = 2;
			}
			// Four byte sequence:
			elseif (($value & 0xF8) === 0xF0) {
				$character = ($value & 0x07) << 18;
				$length = 4;
				$remaining = 3;
			}
			// Invalid byte:
			else {
				$valid = false;
				$length = 1;
				$remaining = 0;
			}

if ($remaining) {
				if ($position + $length <= $strlen) {
					for ($position++; $remaining; $position++) {
						$value = ord($string[$position]);

// Check that the byte is valid, then add it to the character:
						if (($value & 0xC0) === 0x80) {
							$character |= ($value & 0x3F) << (--$remaining * 6);
						}
						// If it is invalid, count the sequence as invalid and reprocess the current byte:
						else {
							$valid = false;
							$position--;
							break;
						}
					}
				}
				else {
					$position = $strlen - 1;
					$valid = false;
				}
			}

// Percent encode anything invalid or not in ucschar
			if (
				// Invalid sequences
				!$valid
				// Non-shortest form sequences are invalid
				|| $length > 1 && $character <= 0x7F
				|| $length > 2 && $character <= 0x7FF
				|| $length > 3 && $character <= 0xFFFF
				// Outside of range of ucschar codepoints
				// Noncharacters
				|| ($character & 0xFFFE) === 0xFFFE
				|| $character >= 0xFDD0 && $character <= 0xFDEF
				|| (
					// Everything else not in ucschar
					   $character > 0xD7FF && $character < 0xF900
					|| $character < 0xA0
					|| $character > 0xEFFFD
				)
				&& (
					// Everything not in iprivate, if it applies
					   !$iprivate
					|| $character < 0xE000
					|| $character > 0x10FFFD
				)
			) {
				// If we were a character, pretend we weren't, but rather an error.
				if ($valid) {
					$position--;
				}

for ($j = $start; $j <= $position; $j++) {
					$string = substr_replace($string, sprintf('%%%02X', ord($string[$j])), $j, 1);
					$j += 2;
					$position += 2;
					$strlen += 2;
				}
			}
		}

return $string;
	}

/**
	 * Callback function for preg_replace_callback.
	 *
	 * Removes sequences of percent encoded bytes that represent UTF-8
	 * encoded characters in iunreserved
	 *
	 * @param array $match PCRE match
	 * @return string Replacement
	 */
	protected function remove_iunreserved_percent_encoded($match) {
		// As we just have valid percent encoded sequences we can just explode
		// and ignore the first member of the returned array (an empty string).
		$bytes = explode('%', $match[0]);

// Initialize the new string (this is what will be returned) and that
		// there are no bytes remaining in the current sequence (unsurprising
		// at the first byte!).
		$string = '';
		$remaining = 0;

// Loop over each and every byte, and set $value to its value
		for ($i = 1, $len = count($bytes); $i < $len; $i++) {
			$value = hexdec($bytes[$i]);

// If we're the first byte of sequence:
			if (!$remaining) {
				// Start position
				$start = $i;

// By default we are valid
				$valid = true;

// One byte sequence:
				if ($value <= 0x7F) {
					$character = $value;
					$length = 1;
				}
				// Two byte sequence:
				elseif (($value & 0xE0) === 0xC0) {
					$character = ($value & 0x1F) << 6;
					$length = 2;
					$remaining = 1;
				}
				// Three byte sequence:
				elseif (($value & 0xF0) === 0xE0) {
					$character = ($value & 0x0F) << 12;
					$length = 3;
					$remaining = 2;
				}
				// Four byte sequence:
				elseif (($value & 0xF8) === 0xF0) {
					$character = ($value & 0x07) << 18;
					$length = 4;
					$remaining = 3;
				}
				// Invalid byte:
				else {
					$valid = false;
					$remaining = 0;
				}
			}
			// Continuation byte:
			else {
				// Check that the byte is valid, then add it to the character:
				if (($value & 0xC0) === 0x80) {
					$remaining--;
					$character |= ($value & 0x3F) << ($remaining * 6);
				}
				// If it is invalid, count the sequence as invalid and reprocess the current byte as the start of a sequence:
				else {
					$valid = false;
					$remaining = 0;
					$i--;
				}
			}

// If we've reached the end of the current byte sequence, append it to Unicode::$data
			if (!$remaining) {
				// Percent encode anything invalid or not in iunreserved
				if (
					// Invalid sequences
					!$valid
					// Non-shortest form sequences are invalid
					|| $length > 1 && $character <= 0x7F
					|| $length > 2 && $character <= 0x7FF
					|| $length > 3 && $character <= 0xFFFF
					// Outside of range of iunreserved codepoints
					|| $character < 0x2D
					|| $character > 0xEFFFD
					// Noncharacters
					|| ($character & 0xFFFE) === 0xFFFE
					|| $character >= 0xFDD0 && $character <= 0xFDEF
					// Everything else not in iunreserved (this is all BMP)
					|| $character === 0x2F
					|| $character > 0x39 && $character < 0x41
					|| $character > 0x5A && $character < 0x61
					|| $character > 0x7A && $character < 0x7E
					|| $character > 0x7E && $character < 0xA0
					|| $character > 0xD7FF && $character < 0xF900
				) {
					for ($j = $start; $j <= $i; $j++) {
						$string .= '%' . strtoupper($bytes[$j]);
					}
				}
				else {
					for ($j = $start; $j <= $i; $j++) {
						$string .= chr(hexdec($bytes[$j]));
					}
				}
			}
		}

// If we have any bytes left over they are invalid (i.e., we are
		// mid-way through a multi-byte sequence)
		if ($remaining) {
			for ($j = $start; $j < $len; $j++) {
				$string .= '%' . strtoupper($bytes[$j]);
			}
		}

return $string;
	}

protected function scheme_normalization() {
		if (isset($this->normalization[$this->scheme]['iuserinfo']) && $this->iuserinfo === $this->normalization[$this->scheme]['iuserinfo']) {
			$this->iuserinfo = null;
		}
		if (isset($this->normalization[$this->scheme]['ihost']) && $this->ihost === $this->normalization[$this->scheme]['ihost']) {
			$this->ihost = null;
		}
		if (isset($this->normalization[$this->scheme]['port']) && $this->port === $this->normalization[$this->scheme]['port']) {
			$this->port = null;
		}
		if (isset($this->normalization[$this->scheme]['ipath']) && $this->ipath === $this->normalization[$this->scheme]['ipath']) {
			$this->ipath = '';
		}
		if (isset($this->ihost) && empty($this->ipath)) {
			$this->ipath = '/';
		}
		if (isset($this->normalization[$this->scheme]['iquery']) && $this->iquery === $this->normalization[$this->scheme]['iquery']) {
			$this->iquery = null;
		}
		if (isset($this->normalization[$this->scheme]['ifragment']) && $this->ifragment === $this->normalization[$this->scheme]['ifragment']) {
			$this->ifragment = null;
		}
	}

/**
	 * Check if the object represents a valid IRI. This needs to be done on each
	 * call as some things change depending on another part of the IRI.
	 *
	 * @return bool
	 */
	public function is_valid() {
		$isauthority = $this->iuserinfo !== null || $this->ihost !== null || $this->port !== null;
		if ($this->ipath !== '' &&
			(
				$isauthority && $this->ipath[0] !== '/' ||
				(
					$this->scheme === null &&
					!$isauthority &&
					strpos($this->ipath, ':') !== false &&
					(strpos($this->ipath, '/') === false ? true : strpos($this->ipath, ':') < strpos($this->ipath, '/'))
				)
			)
		) {
			return false;
		}

return true;
	}

/**
	 * Set the entire IRI. Returns true on success, false on failure (if there
	 * are any invalid characters).
	 *
	 * @param string $iri
	 * @return bool
	 */
	protected function set_iri($iri) {
		static $cache;
		if (!$cache) {
			$cache = array();
		}

if ($iri === null) {
			return true;
		}
		if (isset($cache[$iri])) {
			list($this->scheme,
				 $this->iuserinfo,
				 $this->ihost,
				 $this->port,
				 $this->ipath,
				 $this->iquery,
				 $this->ifragment,
				 $return) = $cache[$iri];
			return $return;
		}

$parsed = $this->parse_iri((string) $iri);

$return = $this->set_scheme($parsed['scheme'])
			&& $this->set_authority($parsed['authority'])
			&& $this->set_path($parsed['path'])
			&& $this->set_query($parsed['query'])
			&& $this->set_fragment($parsed['fragment']);

$cache[$iri] = array($this->scheme,
							 $this->iuserinfo,
							 $this->ihost,
							 $this->port,
							 $this->ipath,
							 $this->iquery,
							 $this->ifragment,
							 $return);
		return $return;
	}

/**
	 * Set the scheme. Returns true on success, false on failure (if there are
	 * any invalid characters).
	 *
	 * @param string $scheme
	 * @return bool
	 */
	protected function set_scheme($scheme) {
		if ($scheme === null) {
			$this->scheme = null;
		}
		elseif (!preg_match('/^[A-Za-z][0-9A-Za-z+\-.]*$/', $scheme)) {
			$this->scheme = null;
			return false;
		}
		else {
			$this->scheme = strtolower($scheme);
		}
		return true;
	}

/**
	 * Set the authority. Returns true on success, false on failure (if there are
	 * any invalid characters).
	 *
	 * @param string $authority
	 * @return bool
	 */
	protected function set_authority($authority) {
		static $cache;
		if (!$cache) {
			$cache = array();
		}

if ($authority === null) {
			$this->iuserinfo = null;
			$this->ihost = null;
			$this->port = null;
			return true;
		}
		if (isset($cache[$authority])) {
			list($this->iuserinfo,
				 $this->ihost,
				 $this->port,
				 $return) = $cache[$authority];

return $return;
		}

$remaining = $authority;
		if (($iuserinfo_end = strrpos($remaining, '@')) !== false) {
			$iuserinfo = substr($remaining, 0, $iuserinfo_end);
			$remaining = substr($remaining, $iuserinfo_end + 1);
		}
		else {
			$iuserinfo = null;
		}
		if (($port_start = strpos($remaining, ':', strpos($remaining, ']'))) !== false) {
			$port = substr($remaining, $port_start + 1);
			if ($port === false || $port === '') {
				$port = null;
			}
			$remaining = substr($remaining, 0, $port_start);
		}
		else {
			$port = null;
		}

$return = $this->set_userinfo($iuserinfo) &&
				  $this->set_host($remaining) &&
				  $this->set_port($port);

$cache[$authority] = array($this->iuserinfo,
								   $this->ihost,
								   $this->port,
								   $return);

return $return;
	}

/**
	 * Set the iuserinfo.
	 *
	 * @param string $iuserinfo
	 * @return bool
	 */
	protected function set_userinfo($iuserinfo) {
		if ($iuserinfo === null) {
			$this->iuserinfo = null;
		}
		else {
			$this->iuserinfo = $this->replace_invalid_with_pct_encoding($iuserinfo, '!$&\'()*+,;=:');
			$this->scheme_normalization();
		}

return true;
	}

/**
	 * Set the ihost. Returns true on success, false on failure (if there are
	 * any invalid characters).
	 *
	 * @param string $ihost
	 * @return bool
	 */
	protected function set_host($ihost) {
		if ($ihost === null) {
			$this->ihost = null;
			return true;
		}
		if (substr($ihost, 0, 1) === '[' && substr($ihost, -1) === ']') {
			if (Requests_IPv6::check_ipv6(substr($ihost, 1, -1))) {
				$this->ihost = '[' . Requests_IPv6::compress(substr($ihost, 1, -1)) . ']';
			}
			else {
				$this->ihost = null;
				return false;
			}
		}
		else {
			$ihost = $this->replace_invalid_with_pct_encoding($ihost, '!$&\'()*+,;=');

// Lowercase, but ignore pct-encoded sections (as they should
			// remain uppercase). This must be done after the previous step
			// as that can add unescaped characters.
			$position = 0;
			$strlen = strlen($ihost);
			while (($position += strcspn($ihost, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ%', $position)) < $strlen) {
				if ($ihost[$position] === '%') {
					$position += 3;
				}
				else {
					$ihost[$position] = strtolower($ihost[$position]);
					$position++;
				}
			}

$this->ihost = $ihost;
		}

$this->scheme_normalization();

return true;
	}

/**
	 * Set the port. Returns true on success, false on failure (if there are
	 * any invalid characters).
	 *
	 * @param string $port
	 * @return bool
	 */
	protected function set_port($port) {
		if ($port === null) {
			$this->port = null;
			return true;
		}

if (strspn($port, '0123456789') === strlen($port)) {
			$this->port = (int) $port;
			$this->scheme_normalization();
			return true;
		}

$this->port = null;
		return false;
	}

/**
	 * Set the ipath.
	 *
	 * @param string $ipath
	 * @return bool
	 */
	protected function set_path($ipath) {
		static $cache;
		if (!$cache) {
			$cache = array();
		}

$ipath = (string) $ipath;

if (isset($cache[$ipath])) {
			$this->ipath = $cache[$ipath][(int) ($this->scheme !== null)];
		}
		else {
			$valid = $this->replace_invalid_with_pct_encoding($ipath, '!$&\'()*+,;=@:/');
			$removed = $this->remove_dot_segments($valid);

$cache[$ipath] = array($valid, $removed);
			$this->ipath = ($this->scheme !== null) ? $removed : $valid;
		}
		$this->scheme_normalization();
		return true;
	}

/**
	 * Set the iquery.
	 *
	 * @param string $iquery
	 * @return bool
	 */
	protected function set_query($iquery) {
		if ($iquery === null) {
			$this->iquery = null;
		}
		else {
			$this->iquery = $this->replace_invalid_with_pct_encoding($iquery, '!$&\'()*+,;=:@/?', true);
			$this->scheme_normalization();
		}
		return true;
	}

/**
	 * Set the ifragment.
	 *
	 * @param string $ifragment
	 * @return bool
	 */
	protected function set_fragment($ifragment) {
		if ($ifragment === null) {
			$this->ifragment = null;
		}
		else {
			$this->ifragment = $this->replace_invalid_with_pct_encoding($ifragment, '!$&\'()*+,;=:@/?');
			$this->scheme_normalization();
		}
		return true;
	}

/**
	 * Convert an IRI to a URI (or parts thereof)
	 *
	 * @param string|bool IRI to convert (or false from {@see get_iri})
	 * @return string|false URI if IRI is valid, false otherwise.
	 */
	protected function to_uri($string) {
		if (!is_string($string)) {
			return false;
		}

static $non_ascii;
		if (!$non_ascii) {
			$non_ascii = implode('', range("\x80", "\xFF"));
		}

$position = 0;
		$strlen = strlen($string);
		while (($position += strcspn($string, $non_ascii, $position)) < $strlen) {
			$string = substr_replace($string, sprintf('%%%02X', ord($string[$position])), $position, 1);
			$position += 3;
			$strlen += 2;
		}

return $string;
	}

/**
	 * Get the complete IRI
	 *
	 * @return string|false
	 */
	protected function get_iri() {
		if (!$this->is_valid()) {
			return false;
		}

$iri = '';
		if ($this->scheme !== null) {
			$iri .= $this->scheme . ':';
		}
		if (($iauthority = $this->get_iauthority()) !== null) {
			$iri .= '//' . $iauthority;
		}
		$iri .= $this->ipath;
		if ($this->iquery !== null) {
			$iri .= '?' . $this->iquery;
		}
		if ($this->ifragment !== null) {
			$iri .= '#' . $this->ifragment;
		}

return $iri;
	}

/**
	 * Get the complete URI
	 *
	 * @return string
	 */
	protected function get_uri() {
		return $this->to_uri($this->get_iri());
	}

/**
	 * Get the complete iauthority
	 *
	 * @return string|null
	 */
	protected function get_iauthority() {
		if ($this->iuserinfo === null && $this->ihost === null && $this->port === null) {
			return null;
		}

$iauthority = '';
		if ($this->iuserinfo !== null) {
			$iauthority .= $this->iuserinfo . '@';
		}
		if ($this->ihost !== null) {
			$iauthority .= $this->ihost;
		}
		if ($this->port !== null) {
			$iauthority .= ':' . $this->port;
		}
		return $iauthority;
	}

/**
	 * Get the complete authority
	 *
	 * @return string
	 */
	protected function get_authority() {
		$iauthority = $this->get_iauthority();
		if (is_string($iauthority)) {
			return $this->to_uri($iauthority);
		}
		else {
			return $iauthority;
		}
	}
}
<?php
/**
 * Case-insensitive dictionary, suitable for HTTP headers
 *
 * @package Requests
 */

/**
 * Case-insensitive dictionary, suitable for HTTP headers
 *
 * @package Requests
 */
class Requests_Response_Headers extends Requests_Utility_CaseInsensitiveDictionary {
	/**
	 * Get the given header
	 *
	 * Unlike {@see self::getValues()}, this returns a string. If there are
	 * multiple values, it concatenates them with a comma as per RFC2616.
	 *
	 * Avoid using this where commas may be used unquoted in values, such as
	 * Set-Cookie headers.
	 *
	 * @param string $key
	 * @return string|null Header value
	 */
	public function offsetGet($key) {
		$key = strtolower($key);
		if (!isset($this->data[$key])) {
			return null;
		}

return $this->flatten($this->data[$key]);
	}

$key = strtolower($key);

if (!isset($this->data[$key])) {
			$this->data[$key] = array();
		}

$this->data[$key][] = $value;
	}

/**
	 * Get all values for a given header
	 *
	 * @param string $key
	 * @return array|null Header values
	 */
	public function getValues($key) {
		$key = strtolower($key);
		if (!isset($this->data[$key])) {
			return null;
		}

return $this->data[$key];
	}

/**
	 * Flattens a value into a string
	 *
	 * Converts an array into a string by imploding values with a comma, as per
	 * RFC2616's rules for folding headers.
	 *
	 * @param string|array $value Value to flatten
	 * @return string Flattened value
	 */
	public function flatten($value) {
		if (is_array($value)) {
			$value = implode(',', $value);
		}

return $value;
	}

/**
	 * Get an iterator for the data
	 *
	 * Converts the internal
	 * @return ArrayIterator
	 */
	public function getIterator() {
		return new Requests_Utility_FilteredIterator($this->data, array($this, 'flatten'));
	}
}
<?php
/**
 * Base HTTP transport
 *
 * @package Requests
 * @subpackage Transport
 */

/**
 * Base HTTP transport
 *
 * @package Requests
 * @subpackage Transport
 */
interface Requests_Transport {
	/**
	 * Perform a request
	 *
	 * @param string $url URL to request
	 * @param array $headers Associative array of request headers
	 * @param string|array $data Data to send either as the POST body, or as parameters in the URL for a GET/HEAD
	 * @param array $options Request options, see {@see Requests::response()} for documentation
	 * @return string Raw HTTP result
	 */
	public function request($url, $headers = array(), $data = array(), $options = array());

/**
	 * Self-test whether the transport can be used
	 * @return bool
	 */
	public static function test();
}
<?php
/**
 * Requests for PHP
 *
 * Inspired by Requests for Python.
 *
 * Based on concepts from SimplePie_File, RequestCore and WP_Http.
 *
 * @package Requests
 */

/**
 * Requests for PHP
 *
 * Inspired by Requests for Python.
 *
 * Based on concepts from SimplePie_File, RequestCore and WP_Http.
 *
 * @package Requests
 */
class Requests {
	/**
	 * POST method
	 *
	 * @var string
	 */
	const POST = 'POST';

/**
	 * PUT method
	 *
	 * @var string
	 */
	const PUT = 'PUT';

/**
	 * GET method
	 *
	 * @var string
	 */
	const GET = 'GET';

/**
	 * HEAD method
	 *
	 * @var string
	 */
	const HEAD = 'HEAD';

/**
	 * DELETE method
	 *
	 * @var string
	 */
	const DELETE = 'DELETE';

/**
	 * OPTIONS method
	 *
	 * @var string
	 */
	const OPTIONS = 'OPTIONS';

/**
	 * TRACE method
	 *
	 * @var string
	 */
	const TRACE = 'TRACE';

/**
	 * PATCH method
	 *
	 * @link https://tools.ietf.org/html/rfc5789
	 * @var string
	 */
	const PATCH = 'PATCH';

/**
	 * Default size of buffer size to read streams
	 *
	 * @var integer
	 */
	const BUFFER_SIZE = 1160;

/**
	 * Current version of Requests
	 *
	 * @var string
	 */
	const VERSION = '1.8.1';

/**
	 * Registered transport classes
	 *
	 * @var array
	 */
	protected static $transports = array();

/**
	 * Selected transport name
	 *
	 * Use {@see get_transport()} instead
	 *
	 * @var array
	 */
	public static $transport = array();

/**
	 * Default certificate path.
	 *
	 * @see Requests::get_certificate_path()
	 * @see Requests::set_certificate_path()
	 *
	 * @var string
	 */
	protected static $certificate_path;

/**
	 * This is a static class, do not instantiate it
	 *
	 * @codeCoverageIgnore
	 */
	private function __construct() {}

/**
	 * Autoloader for Requests
	 *
	 * Register this with {@see register_autoloader()} if you'd like to avoid
	 * having to create your own.
	 *
	 * (You can also use `spl_autoload_register` directly if you'd prefer.)
	 *
	 * @codeCoverageIgnore
	 *
	 * @param string $class Class name to load
	 */
	public static function autoloader($class) {
		// Check that the class starts with "Requests"
		if (strpos($class, 'Requests') !== 0) {
			return;
		}

$file = str_replace('_', '/', $class);
		if (file_exists(dirname(__FILE__) . '/' . $file . '.php')) {
			require_once dirname(__FILE__) . '/' . $file . '.php';
		}
	}

/**
	 * Register the built-in autoloader
	 *
	 * @codeCoverageIgnore
	 */
	public static function register_autoloader() {
		spl_autoload_register(array('Requests', 'autoloader'));
	}

/**
	 * Register a transport
	 *
	 * @param string $transport Transport class to add, must support the Requests_Transport interface
	 */
	public static function add_transport($transport) {
		if (empty(self::$transports)) {
			self::$transports = array(
				'Requests_Transport_cURL',
				'Requests_Transport_fsockopen',
			);
		}

self::$transports = array_merge(self::$transports, array($transport));
	}

/**
	 * Get a working transport
	 *
	 * @throws Requests_Exception If no valid transport is found (`notransport`)
	 * @return Requests_Transport
	 */
	protected static function get_transport($capabilities = array()) {
		// Caching code, don't bother testing coverage
		// @codeCoverageIgnoreStart
		// array of capabilities as a string to be used as an array key
		ksort($capabilities);
		$cap_string = serialize($capabilities);

// Don't search for a transport if it's already been done for these $capabilities
		if (isset(self::$transport[$cap_string]) && self::$transport[$cap_string] !== null) {
			$class = self::$transport[$cap_string];
			return new $class();
		}
		// @codeCoverageIgnoreEnd

if (empty(self::$transports)) {
			self::$transports = array(
				'Requests_Transport_cURL',
				'Requests_Transport_fsockopen',
			);
		}

// Find us a working transport
		foreach (self::$transports as $class) {
			if (!class_exists($class)) {
				continue;
			}

$result = call_user_func(array($class, 'test'), $capabilities);
			if ($result) {
				self::$transport[$cap_string] = $class;
				break;
			}
		}
		if (self::$transport[$cap_string] === null) {
			throw new Requests_Exception('No working transports found', 'notransport', self::$transports);
		}

$class = self::$transport[$cap_string];
		return new $class();
	}

/**#@+
	 * @see request()
	 * @param string $url
	 * @param array $headers
	 * @param array $options
	 * @return Requests_Response
	 */
	/**
	 * Send a GET request
	 */
	public static function get($url, $headers = array(), $options = array()) {
		return self::request($url, $headers, null, self::GET, $options);
	}

/**
	 * Send a HEAD request
	 */
	public static function head($url, $headers = array(), $options = array()) {
		return self::request($url, $headers, null, self::HEAD, $options);
	}

/**
	 * Send a DELETE request
	 */
	public static function delete($url, $headers = array(), $options = array()) {
		return self::request($url, $headers, null, self::DELETE, $options);
	}

/**
	 * Send a TRACE request
	 */
	public static function trace($url, $headers = array(), $options = array()) {
		return self::request($url, $headers, null, self::TRACE, $options);
	}
	/**#@-*/

/**#@+
	 * @see request()
	 * @param string $url
	 * @param array $headers
	 * @param array $data
	 * @param array $options
	 * @return Requests_Response
	 */
	/**
	 * Send a POST request
	 */
	public static function post($url, $headers = array(), $data = array(), $options = array()) {
		return self::request($url, $headers, $data, self::POST, $options);
	}
	/**
	 * Send a PUT request
	 */
	public static function put($url, $headers = array(), $data = array(), $options = array()) {
		return self::request($url, $headers, $data, self::PUT, $options);
	}

/**
	 * Send an OPTIONS request
	 */
	public static function options($url, $headers = array(), $data = array(), $options = array()) {
		return self::request($url, $headers, $data, self::OPTIONS, $options);
	}

/**
	 * Send a PATCH request
	 *
	 * Note: Unlike {@see post} and {@see put}, `$headers` is required, as the
	 * specification recommends that should send an ETag
	 *
	 * @link https://tools.ietf.org/html/rfc5789
	 */
	public static function patch($url, $headers, $data = array(), $options = array()) {
		return self::request($url, $headers, $data, self::PATCH, $options);
	}
	/**#@-*/

/**
	 * Main interface for HTTP requests
	 *
	 * This method initiates a request and sends it via a transport before
	 * parsing.
	 *
	 * The `$options` parameter takes an associative array with the following
	 * options:
	 *
	 * - `timeout`: How long should we wait for a response?
	 *    Note: for cURL, a minimum of 1 second applies, as DNS resolution
	 *    operates at second-resolution only.
	 *    (float, seconds with a millisecond precision, default: 10, example: 0.01)
	 * - `connect_timeout`: How long should we wait while trying to connect?
	 *    (float, seconds with a millisecond precision, default: 10, example: 0.01)
	 * - `useragent`: Useragent to send to the server
	 *    (string, default: php-requests/$version)
	 * - `follow_redirects`: Should we follow 3xx redirects?
	 *    (boolean, default: true)
	 * - `redirects`: How many times should we redirect before erroring?
	 *    (integer, default: 10)
	 * - `blocking`: Should we block processing on this request?
	 *    (boolean, default: true)
	 * - `filename`: File to stream the body to instead.
	 *    (string|boolean, default: false)
	 * - `auth`: Authentication handler or array of user/password details to use
	 *    for Basic authentication
	 *    (Requests_Auth|array|boolean, default: false)
	 * - `proxy`: Proxy details to use for proxy by-passing and authentication
	 *    (Requests_Proxy|array|string|boolean, default: false)
	 * - `max_bytes`: Limit for the response body size.
	 *    (integer|boolean, default: false)
	 * - `idn`: Enable IDN parsing
	 *    (boolean, default: true)
	 * - `transport`: Custom transport. Either a class name, or a
	 *    transport object. Defaults to the first working transport from
	 *    {@see getTransport()}
	 *    (string|Requests_Transport, default: {@see getTransport()})
	 * - `hooks`: Hooks handler.
	 *    (Requests_Hooker, default: new Requests_Hooks())
	 * - `verify`: Should we verify SSL certificates? Allows passing in a custom
	 *    certificate file as a string. (Using true uses the system-wide root
	 *    certificate store instead, but this may have different behaviour
	 *    across transports.)
	 *    (string|boolean, default: library/Requests/Transport/cacert.pem)
	 * - `verifyname`: Should we verify the common name in the SSL certificate?
	 *    (boolean, default: true)
	 * - `data_format`: How should we send the `$data` parameter?
	 *    (string, one of 'query' or 'body', default: 'query' for
	 *    HEAD/GET/DELETE, 'body' for POST/PUT/OPTIONS/PATCH)
	 *
	 * @throws Requests_Exception On invalid URLs (`nonhttp`)
	 *
	 * @param string $url URL to request
	 * @param array $headers Extra headers to send with the request
	 * @param array|null $data Data to send either as a query string for GET/HEAD requests, or in the body for POST requests
	 * @param string $type HTTP request type (use Requests constants)
	 * @param array $options Options for the request (see description for more information)
	 * @return Requests_Response
	 */
	public static function request($url, $headers = array(), $data = array(), $type = self::GET, $options = array()) {
		if (empty($options['type'])) {
			$options['type'] = $type;
		}
		$options = array_merge(self::get_default_options(), $options);

self::set_defaults($url, $headers, $data, $type, $options);

$options['hooks']->dispatch('requests.before_request', array(&$url, &$headers, &$data, &$type, &$options));

if (!empty($options['transport'])) {
			$transport = $options['transport'];

if (is_string($options['transport'])) {
				$transport = new $transport();
			}
		}
		else {
			$need_ssl     = (stripos($url, 'https://') === 0);
			$capabilities = array('ssl' => $need_ssl);
			$transport    = self::get_transport($capabilities);
		}
		$response = $transport->request($url, $headers, $data, $options);

$options['hooks']->dispatch('requests.before_parse', array(&$response, $url, $headers, $data, $type, $options));

return self::parse_response($response, $url, $headers, $data, $options);
	}

/**
	 * Send multiple HTTP requests simultaneously
	 *
	 * The `$requests` parameter takes an associative or indexed array of
	 * request fields. The key of each request can be used to match up the
	 * request with the returned data, or with the request passed into your
	 * `multiple.request.complete` callback.
	 *
	 * The request fields value is an associative array with the following keys:
	 *
	 * - `url`: Request URL Same as the `$url` parameter to
	 *    {@see Requests::request}
	 *    (string, required)
	 * - `headers`: Associative array of header fields. Same as the `$headers`
	 *    parameter to {@see Requests::request}
	 *    (array, default: `array()`)
	 * - `data`: Associative array of data fields or a string. Same as the
	 *    `$data` parameter to {@see Requests::request}
	 *    (array|string, default: `array()`)
	 * - `type`: HTTP request type (use Requests constants). Same as the `$type`
	 *    parameter to {@see Requests::request}
	 *    (string, default: `Requests::GET`)
	 * - `cookies`: Associative array of cookie name to value, or cookie jar.
	 *    (array|Requests_Cookie_Jar)
	 *
	 * If the `$options` parameter is specified, individual requests will
	 * inherit options from it. This can be used to use a single hooking system,
	 * or set all the types to `Requests::POST`, for example.
	 *
	 * In addition, the `$options` parameter takes the following global options:
	 *
	 * - `complete`: A callback for when a request is complete. Takes two
	 *    parameters, a Requests_Response/Requests_Exception reference, and the
	 *    ID from the request array (Note: this can also be overridden on a
	 *    per-request basis, although that's a little silly)
	 *    (callback)
	 *
	 * @param array $requests Requests data (see description for more information)
	 * @param array $options Global and default options (see {@see Requests::request})
	 * @return array Responses (either Requests_Response or a Requests_Exception object)
	 */
	public static function request_multiple($requests, $options = array()) {
		$options = array_merge(self::get_default_options(true), $options);

if (!empty($options['hooks'])) {
			$options['hooks']->register('transport.internal.parse_response', array('Requests', 'parse_multiple'));
			if (!empty($options['complete'])) {
				$options['hooks']->register('multiple.request.complete', $options['complete']);
			}
		}

foreach ($requests as $id => &$request) {
			if (!isset($request['headers'])) {
				$request['headers'] = array();
			}
			if (!isset($request['data'])) {
				$request['data'] = array();
			}
			if (!isset($request['type'])) {
				$request['type'] = self::GET;
			}
			if (!isset($request['options'])) {
				$request['options']         = $options;
				$request['options']['type'] = $request['type'];
			}
			else {
				if (empty($request['options']['type'])) {
					$request['options']['type'] = $request['type'];
				}
				$request['options'] = array_merge($options, $request['options']);
			}

self::set_defaults($request['url'], $request['headers'], $request['data'], $request['type'], $request['options']);

// Ensure we only hook in once
			if ($request['options']['hooks'] !== $options['hooks']) {
				$request['options']['hooks']->register('transport.internal.parse_response', array('Requests', 'parse_multiple'));
				if (!empty($request['options']['complete'])) {
					$request['options']['hooks']->register('multiple.request.complete', $request['options']['complete']);
				}
			}
		}
		unset($request);

if (!empty($options['transport'])) {
			$transport = $options['transport'];

if (is_string($options['transport'])) {
				$transport = new $transport();
			}
		}
		else {
			$transport = self::get_transport();
		}
		$responses = $transport->request_multiple($requests, $options);

foreach ($responses as $id => &$response) {
			// If our hook got messed with somehow, ensure we end up with the
			// correct response
			if (is_string($response)) {
				$request = $requests[$id];
				self::parse_multiple($response, $request);
				$request['options']['hooks']->dispatch('multiple.request.complete', array(&$response, $id));
			}
		}

return $responses;
	}

/**
	 * Get the default options
	 *
	 * @see Requests::request() for values returned by this method
	 * @param boolean $multirequest Is this a multirequest?
	 * @return array Default option values
	 */
	protected static function get_default_options($multirequest = false) {
		$defaults = array(
			'timeout'          => 10,
			'connect_timeout'  => 10,
			'useragent'        => 'php-requests/' . self::VERSION,
			'protocol_version' => 1.1,
			'redirected'       => 0,
			'redirects'        => 10,
			'follow_redirects' => true,
			'blocking'         => true,
			'type'             => self::GET,
			'filename'         => false,
			'auth'             => false,
			'proxy'            => false,
			'cookies'          => false,
			'max_bytes'        => false,
			'idn'              => true,
			'hooks'            => null,
			'transport'        => null,
			'verify'           => self::get_certificate_path(),
			'verifyname'       => true,
		);
		if ($multirequest !== false) {
			$defaults['complete'] = null;
		}
		return $defaults;
	}

/**
	 * Get default certificate path.
	 *
	 * @return string Default certificate path.
	 */
	public static function get_certificate_path() {
		if (!empty(self::$certificate_path)) {
			return self::$certificate_path;
		}

return dirname(__FILE__) . '/Requests/Transport/cacert.pem';
	}

/**
	 * Set default certificate path.
	 *
	 * @param string $path Certificate path, pointing to a PEM file.
	 */
	public static function set_certificate_path($path) {
		self::$certificate_path = $path;
	}

/**
	 * Set the default values
	 *
	 * @param string $url URL to request
	 * @param array $headers Extra headers to send with the request
	 * @param array|null $data Data to send either as a query string for GET/HEAD requests, or in the body for POST requests
	 * @param string $type HTTP request type
	 * @param array $options Options for the request
	 * @return array $options
	 */
	protected static function set_defaults(&$url, &$headers, &$data, &$type, &$options) {
		if (!preg_match('/^http(s)?:\/\//i', $url, $matches)) {
			throw new Requests_Exception('Only HTTP(S) requests are handled.', 'nonhttp', $url);
		}

if (empty($options['hooks'])) {
			$options['hooks'] = new Requests_Hooks();
		}

if (is_array($options['auth'])) {
			$options['auth'] = new Requests_Auth_Basic($options['auth']);
		}
		if ($options['auth'] !== false) {
			$options['auth']->register($options['hooks']);
		}

if (is_string($options['proxy']) || is_array($options['proxy'])) {
			$options['proxy'] = new Requests_Proxy_HTTP($options['proxy']);
		}
		if ($options['proxy'] !== false) {
			$options['proxy']->register($options['hooks']);
		}

if (is_array($options['cookies'])) {
			$options['cookies'] = new Requests_Cookie_Jar($options['cookies']);
		}
		elseif (empty($options['cookies'])) {
			$options['cookies'] = new Requests_Cookie_Jar();
		}
		if ($options['cookies'] !== false) {
			$options['cookies']->register($options['hooks']);
		}

if ($options['idn'] !== false) {
			$iri       = new Requests_IRI($url);
			$iri->host = Requests_IDNAEncoder::encode($iri->ihost);
			$url       = $iri->uri;
		}

// Massage the type to ensure we support it.
		$type = strtoupper($type);

if (!isset($options['data_format'])) {
			if (in_array($type, array(self::HEAD, self::GET, self::DELETE), true)) {
				$options['data_format'] = 'query';
			}
			else {
				$options['data_format'] = 'body';
			}
		}
	}

/**
	 * HTTP response parser
	 *
	 * @throws Requests_Exception On missing head/body separator (`requests.no_crlf_separator`)
	 * @throws Requests_Exception On missing head/body separator (`noversion`)
	 * @throws Requests_Exception On missing head/body separator (`toomanyredirects`)
	 *
	 * @param string $headers Full response text including headers and body
	 * @param string $url Original request URL
	 * @param array $req_headers Original $headers array passed to {@link request()}, in case we need to follow redirects
	 * @param array $req_data Original $data array passed to {@link request()}, in case we need to follow redirects
	 * @param array $options Original $options array passed to {@link request()}, in case we need to follow redirects
	 * @return Requests_Response
	 */
	protected static function parse_response($headers, $url, $req_headers, $req_data, $options) {
		$return = new Requests_Response();
		if (!$options['blocking']) {
			return $return;
		}

$return->raw  = $headers;
		$return->url  = (string) $url;
		$return->body = '';

if (!$options['filename']) {
			$pos = strpos($headers, "\r\n\r\n");
			if ($pos === false) {
				// Crap!
				throw new Requests_Exception('Missing header/body separator', 'requests.no_crlf_separator');
			}

$headers = substr($return->raw, 0, $pos);
			// Headers will always be separated from the body by two new lines - `\n\r\n\r`.
			$body = substr($return->raw, $pos + 4);
			if (!empty($body)) {
				$return->body = $body;
			}
		}
		// Pretend CRLF = LF for compatibility (RFC 2616, section 19.3)
		$headers = str_replace("\r\n", "\n", $headers);
		// Unfold headers (replace [CRLF] 1*( SP | HT ) with SP) as per RFC 2616 (section 2.2)
		$headers = preg_replace('/\n[ \t]/', ' ', $headers);
		$headers = explode("\n", $headers);
		preg_match('#^HTTP/(1\.\d)[ \t]+(\d+)#i', array_shift($headers), $matches);
		if (empty($matches)) {
			throw new Requests_Exception('Response could not be parsed', 'noversion', $headers);
		}
		$return->protocol_version = (float) $matches[1];
		$return->status_code      = (int) $matches[2];
		if ($return->status_code >= 200 && $return->status_code < 300) {
			$return->success = true;
		}

foreach ($headers as $header) {
			list($key, $value) = explode(':', $header, 2);
			$value             = trim($value);
			preg_replace('#(\s+)#i', ' ', $value);
			$return->headers[$key] = $value;
		}
		if (isset($return->headers['transfer-encoding'])) {
			$return->body = self::decode_chunked($return->body);
			unset($return->headers['transfer-encoding']);
		}
		if (isset($return->headers['content-encoding'])) {
			$return->body = self::decompress($return->body);
		}

//fsockopen and cURL compatibility
		if (isset($return->headers['connection'])) {
			unset($return->headers['connection']);
		}

$options['hooks']->dispatch('requests.before_redirect_check', array(&$return, $req_headers, $req_data, $options));

if ($return->is_redirect() && $options['follow_redirects'] === true) {
			if (isset($return->headers['location']) && $options['redirected'] < $options['redirects']) {
				if ($return->status_code === 303) {
					$options['type'] = self::GET;
				}
				$options['redirected']++;
				$location = $return->headers['location'];
				if (strpos($location, 'http://') !== 0 && strpos($location, 'https://') !== 0) {
					// relative redirect, for compatibility make it absolute
					$location = Requests_IRI::absolutize($url, $location);
					$location = $location->uri;
				}

$hook_args = array(
					&$location,
					&$req_headers,
					&$req_data,
					&$options,
					$return,
				);
				$options['hooks']->dispatch('requests.before_redirect', $hook_args);
				$redirected            = self::request($location, $req_headers, $req_data, $options['type'], $options);
				$redirected->history[] = $return;
				return $redirected;
			}
			elseif ($options['redirected'] >= $options['redirects']) {
				throw new Requests_Exception('Too many redirects', 'toomanyredirects', $return);
			}
		}

$return->redirects = $options['redirected'];

$options['hooks']->dispatch('requests.after_request', array(&$return, $req_headers, $req_data, $options));
		return $return;
	}

/**
	 * Callback for `transport.internal.parse_response`
	 *
	 * Internal use only. Converts a raw HTTP response to a Requests_Response
	 * while still executing a multiple request.
	 *
	 * @param string $response Full response text including headers and body (will be overwritten with Response instance)
	 * @param array $request Request data as passed into {@see Requests::request_multiple()}
	 * @return null `$response` is either set to a Requests_Response instance, or a Requests_Exception object
	 */
	public static function parse_multiple(&$response, $request) {
		try {
			$url      = $request['url'];
			$headers  = $request['headers'];
			$data     = $request['data'];
			$options  = $request['options'];
			$response = self::parse_response($response, $url, $headers, $data, $options);
		}
		catch (Requests_Exception $e) {
			$response = $e;
		}
	}

/**
	 * Decoded a chunked body as per RFC 2616
	 *
	 * @see https://tools.ietf.org/html/rfc2616#section-3.6.1
	 * @param string $data Chunked body
	 * @return string Decoded body
	 */
	protected static function decode_chunked($data) {
		if (!preg_match('/^([0-9a-f]+)(?:;(?:[\w-]*)(?:=(?:(?:[\w-]*)*|"(?:[^\r\n])*"))?)*\r\n/i', trim($data))) {
			return $data;
		}

$decoded = '';
		$encoded = $data;

while (true) {
			$is_chunked = (bool) preg_match('/^([0-9a-f]+)(?:;(?:[\w-]*)(?:=(?:(?:[\w-]*)*|"(?:[^\r\n])*"))?)*\r\n/i', $encoded, $matches);
			if (!$is_chunked) {
				// Looks like it's not chunked after all
				return $data;
			}

$length = hexdec(trim($matches[1]));
			if ($length === 0) {
				// Ignore trailer headers
				return $decoded;
			}

$chunk_length = strlen($matches[0]);
			$decoded     .= substr($encoded, $chunk_length, $length);
			$encoded      = substr($encoded, $chunk_length + $length + 2);

if (trim($encoded) === '0' || empty($encoded)) {
				return $decoded;
			}
		}

// We'll never actually get down here
		// @codeCoverageIgnoreStart
	}
	// @codeCoverageIgnoreEnd

/**
	 * Convert a key => value array to a 'key: value' array for headers
	 *
	 * @param array $array Dictionary of header values
	 * @return array List of headers
	 */
	public static function flatten($array) {
		$return = array();
		foreach ($array as $key => $value) {
			$return[] = sprintf('%s: %s', $key, $value);
		}
		return $return;
	}

/**
	 * Convert a key => value array to a 'key: value' array for headers
	 *
	 * @codeCoverageIgnore
	 * @deprecated Misspelling of {@see Requests::flatten}
	 * @param array $array Dictionary of header values
	 * @return array List of headers
	 */
	public static function flattern($array) {
		return self::flatten($array);
	}

/**
	 * Decompress an encoded body
	 *
	 * Implements gzip, compress and deflate. Guesses which it is by attempting
	 * to decode.
	 *
	 * @param string $data Compressed data in one of the above formats
	 * @return string Decompressed string
	 */
	public static function decompress($data) {
		if (substr($data, 0, 2) !== "\x1f\x8b" && substr($data, 0, 2) !== "\x78\x9c") {
			// Not actually compressed. Probably cURL ruining this for us.
			return $data;
		}

if (function_exists('gzdecode')) {
			// phpcs:ignore PHPCompatibility.FunctionUse.NewFunctions.gzdecodeFound -- Wrapped in function_exists() for PHP 5.2.
			$decoded = @gzdecode($data);
			if ($decoded !== false) {
				return $decoded;
			}
		}

if (function_exists('gzinflate')) {
			$decoded = @gzinflate($data);
			if ($decoded !== false) {
				return $decoded;
			}
		}

$decoded = self::compatible_gzinflate($data);
		if ($decoded !== false) {
			return $decoded;
		}

if (function_exists('gzuncompress')) {
			$decoded = @gzuncompress($data);
			if ($decoded !== false) {
				return $decoded;
			}
		}

return $data;
	}

/**
	 * Decompression of deflated string while staying compatible with the majority of servers.
	 *
	 * Certain Servers will return deflated data with headers which PHP's gzinflate()
	 * function cannot handle out of the box. The following function has been created from
	 * various snippets on the gzinflate() PHP documentation.
	 *
	 * Warning: Magic numbers within. Due to the potential different formats that the compressed
	 * data may be returned in, some "magic offsets" are needed to ensure proper decompression
	 * takes place. For a simple progmatic way to determine the magic offset in use, see:
	 * https://core.trac.wordpress.org/ticket/18273
	 *
	 * @since 2.8.1
	 * @link https://core.trac.wordpress.org/ticket/18273
	 * @link https://secure.php.net/manual/en/function.gzinflate.php#70875
	 * @link https://secure.php.net/manual/en/function.gzinflate.php#77336
	 *
	 * @param string $gz_data String to decompress.
	 * @return string|bool False on failure.
	 */
	public static function compatible_gzinflate($gz_data) {
		// Compressed data might contain a full zlib header, if so strip it for
		// gzinflate()
		if (substr($gz_data, 0, 3) === "\x1f\x8b\x08") {
			$i   = 10;
			$flg = ord(substr($gz_data, 3, 1));
			if ($flg > 0) {
				if ($flg & 4) {
					list($xlen) = unpack('v', substr($gz_data, $i, 2));
					$i         += 2 + $xlen;
				}
				if ($flg & 8) {
					$i = strpos($gz_data, "\0", $i) + 1;
				}
				if ($flg & 16) {
					$i = strpos($gz_data, "\0", $i) + 1;
				}
				if ($flg & 2) {
					$i += 2;
				}
			}
			$decompressed = self::compatible_gzinflate(substr($gz_data, $i));
			if ($decompressed !== false) {
				return $decompressed;
			}
		}

// If the data is Huffman Encoded, we must first strip the leading 2
		// byte Huffman marker for gzinflate()
		// The response is Huffman coded by many compressors such as
		// java.util.zip.Deflater, Ruby’s Zlib::Deflate, and .NET's
		// System.IO.Compression.DeflateStream.
		//
		// See https://decompres.blogspot.com/ for a quick explanation of this
		// data type
		$huffman_encoded = false;

// low nibble of first byte should be 0x08
		list(, $first_nibble) = unpack('h', $gz_data);

// First 2 bytes should be divisible by 0x1F
		list(, $first_two_bytes) = unpack('n', $gz_data);

if ($first_nibble === 0x08 && ($first_two_bytes % 0x1F) === 0) {
			$huffman_encoded = true;
		}

if ($huffman_encoded) {
			$decompressed = @gzinflate(substr($gz_data, 2));
			if ($decompressed !== false) {
				return $decompressed;
			}
		}

if (substr($gz_data, 0, 4) === "\x50\x4b\x03\x04") {
			// ZIP file format header
			// Offset 6: 2 bytes, General-purpose field
			// Offset 26: 2 bytes, filename length
			// Offset 28: 2 bytes, optional field length
			// Offset 30: Filename field, followed by optional field, followed
			// immediately by data
			list(, $general_purpose_flag) = unpack('v', substr($gz_data, 6, 2));

// If the file has been compressed on the fly, 0x08 bit is set of
			// the general purpose field. We can use this to differentiate
			// between a compressed document, and a ZIP file
			$zip_compressed_on_the_fly = ((0x08 & $general_purpose_flag) === 0x08);

if (!$zip_compressed_on_the_fly) {
				// Don't attempt to decode a compressed zip file
				return $gz_data;
			}

// Determine the first byte of data, based on the above ZIP header
			// offsets:
			$first_file_start = array_sum(unpack('v2', substr($gz_data, 26, 4)));
			$decompressed     = @gzinflate(substr($gz_data, 30 + $first_file_start));
			if ($decompressed !== false) {
				return $decompressed;
			}
			return false;
		}

// Finally fall back to straight gzinflate
		$decompressed = @gzinflate($gz_data);
		if ($decompressed !== false) {
			return $decompressed;
		}

// Fallback for all above failing, not expected, but included for
		// debugging and preventing regressions and to track stats
		$decompressed = @gzinflate(substr($gz_data, 2));
		if ($decompressed !== false) {
			return $decompressed;
		}

return false;
	}

public static function match_domain($host, $reference) {
		// Check for a direct match
		if ($host === $reference) {
			return true;
		}

// Calculate the valid wildcard match if the host is not an IP address
		// Also validates that the host has 3 parts or more, as per Firefox's
		// ruleset.
		$parts = explode('.', $host);
		if (ip2long($host) === false && count($parts) >= 3) {
			$parts[0] = '*';
			$wildcard = implode('.', $parts);
			if ($wildcard === $reference) {
				return true;
			}
		}

return false;
	}
}
<?php

/*
 * This file is part of Composer.
 *
 * (c) Nils Adermann <naderman@naderman.de>
 *     Jordi Boggiano <j.boggiano@seld.be>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Composer\Autoload;

/**
 * ClassLoader implements a PSR-0, PSR-4 and classmap class loader.
 *
 *     $loader = new \Composer\Autoload\ClassLoader();
 *
 *     // register classes with namespaces
 *     $loader->add('Symfony\Component', __DIR__.'/component');
 *     $loader->add('Symfony',           __DIR__.'/framework');
 *
 *     // activate the autoloader
 *     $loader->register();
 *
 *     // to enable searching the include path (eg. for PEAR packages)
 *     $loader->setUseIncludePath(true);
 *
 * In this example, if you try to use a class in the Symfony\Component
 * namespace or one of its children (Symfony\Component\Console for instance),
 * the autoloader will first look for the class under the component/
 * directory, and it will then fallback to the framework/ directory if not
 * found before giving up.
 *
 * This class is loosely based on the Symfony UniversalClassLoader.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 * @see    https://www.php-fig.org/psr/psr-0/
 * @see    https://www.php-fig.org/psr/psr-4/
 */
class ClassLoader
{
    /** @var ?string */
    private $vendorDir;

// PSR-4
    /**
     * @var array[]
     * @psalm-var array<string, array<string, int>>
     */
    private $prefixLengthsPsr4 = array();
    /**
     * @var array[]
     * @psalm-var array<string, array<int, string>>
     */
    private $prefixDirsPsr4 = array();
    /**
     * @var array[]
     * @psalm-var array<string, string>
     */
    private $fallbackDirsPsr4 = array();

// PSR-0
    /**
     * @var array[]
     * @psalm-var array<string, array<string, string[]>>
     */
    private $prefixesPsr0 = array();
    /**
     * @var array[]
     * @psalm-var array<string, string>
     */
    private $fallbackDirsPsr0 = array();

/** @var bool */
    private $useIncludePath = false;

/**
     * @var string[]
     * @psalm-var array<string, string>
     */
    private $classMap = array();

/** @var bool */
    private $classMapAuthoritative = false;

/**
     * @var bool[]
     * @psalm-var array<string, bool>
     */
    private $missingClasses = array();

/** @var ?string */
    private $apcuPrefix;

/**
     * @var self[]
     */
    private static $registeredLoaders = array();

/**
     * @param ?string $vendorDir
     */
    public function __construct($vendorDir = null)
    {
        $this->vendorDir = $vendorDir;
    }

/**
     * @return string[]
     */
    public function getPrefixes()
    {
        if (!empty($this->prefixesPsr0)) {
            return call_user_func_array('array_merge', array_values($this->prefixesPsr0));
        }

return array();
    }

/**
     * @return array[]
     * @psalm-return array<string, array<int, string>>
     */
    public function getPrefixesPsr4()
    {
        return $this->prefixDirsPsr4;
    }

/**
     * @return array[]
     * @psalm-return array<string, string>
     */
    public function getFallbackDirs()
    {
        return $this->fallbackDirsPsr0;
    }

/**
     * @return array[]
     * @psalm-return array<string, string>
     */
    public function getFallbackDirsPsr4()
    {
        return $this->fallbackDirsPsr4;
    }

/**
     * @return string[] Array of classname => path
     * @psalm-return array<string, string>
     */
    public function getClassMap()
    {
        return $this->classMap;
    }

/**
     * @param string[] $classMap Class to filename map
     * @psalm-param array<string, string> $classMap
     *
     * @return void
     */
    public function addClassMap(array $classMap)
    {
        if ($this->classMap) {
            $this->classMap = array_merge($this->classMap, $classMap);
        } else {
            $this->classMap = $classMap;
        }
    }

/**
     * Registers a set of PSR-0 directories for a given prefix, either
     * appending or prepending to the ones previously set for this prefix.
     *
     * @param string          $prefix  The prefix
     * @param string[]|string $paths   The PSR-0 root directories
     * @param bool            $prepend Whether to prepend the directories
     *
     * @return void
     */
    public function add($prefix, $paths, $prepend = false)
    {
        if (!$prefix) {
            if ($prepend) {
                $this->fallbackDirsPsr0 = array_merge(
                    (array) $paths,
                    $this->fallbackDirsPsr0
                );
            } else {
                $this->fallbackDirsPsr0 = array_merge(
                    $this->fallbackDirsPsr0,
                    (array) $paths
                );
            }

return;
        }

$first = $prefix[0];
        if (!isset($this->prefixesPsr0[$first][$prefix])) {
            $this->prefixesPsr0[$first][$prefix] = (array) $paths;

return;
        }
        if ($prepend) {
            $this->prefixesPsr0[$first][$prefix] = array_merge(
                (array) $paths,
                $this->prefixesPsr0[$first][$prefix]
            );
        } else {
            $this->prefixesPsr0[$first][$prefix] = array_merge(
                $this->prefixesPsr0[$first][$prefix],
                (array) $paths
            );
        }
    }

/**
     * Registers a set of PSR-4 directories for a given namespace, either
     * appending or prepending to the ones previously set for this namespace.
     *
     * @param string          $prefix  The prefix/namespace, with trailing '\\'
     * @param string[]|string $paths   The PSR-4 base directories
     * @param bool            $prepend Whether to prepend the directories
     *
     * @throws \InvalidArgumentException
     *
     * @return void
     */
    public function addPsr4($prefix, $paths, $prepend = false)
    {
        if (!$prefix) {
            // Register directories for the root namespace.
            if ($prepend) {
                $this->fallbackDirsPsr4 = array_merge(
                    (array) $paths,
                    $this->fallbackDirsPsr4
                );
            } else {
                $this->fallbackDirsPsr4 = array_merge(
                    $this->fallbackDirsPsr4,
                    (array) $paths
                );
            }
        } elseif (!isset($this->prefixDirsPsr4[$prefix])) {
            // Register directories for a new namespace.
            $length = strlen($prefix);
            if ('\\' !== $prefix[$length - 1]) {
                throw new \InvalidArgumentException("A non-empty PSR-4 prefix must end with a namespace separator.");
            }
            $this->prefixLengthsPsr4[$prefix[0]][$prefix] = $length;
            $this->prefixDirsPsr4[$prefix] = (array) $paths;
        } elseif ($prepend) {
            // Prepend directories for an already registered namespace.
            $this->prefixDirsPsr4[$prefix] = array_merge(
                (array) $paths,
                $this->prefixDirsPsr4[$prefix]
            );
        } else {
            // Append directories for an already registered namespace.
            $this->prefixDirsPsr4[$prefix] = array_merge(
                $this->prefixDirsPsr4[$prefix],
                (array) $paths
            );
        }
    }

/**
     * Registers a set of PSR-0 directories for a given prefix,
     * replacing any others previously set for this prefix.
     *
     * @param string          $prefix The prefix
     * @param string[]|string $paths  The PSR-0 base directories
     *
     * @return void
     */
    public function set($prefix, $paths)
    {
        if (!$prefix) {
            $this->fallbackDirsPsr0 = (array) $paths;
        } else {
            $this->prefixesPsr0[$prefix[0]][$prefix] = (array) $paths;
        }
    }

/**
     * Registers a set of PSR-4 directories for a given namespace,
     * replacing any others previously set for this namespace.
     *
     * @param string          $prefix The prefix/namespace, with trailing '\\'
     * @param string[]|string $paths  The PSR-4 base directories
     *
     * @throws \InvalidArgumentException
     *
     * @return void
     */
    public function setPsr4($prefix, $paths)
    {
        if (!$prefix) {
            $this->fallbackDirsPsr4 = (array) $paths;
        } else {
            $length = strlen($prefix);
            if ('\\' !== $prefix[$length - 1]) {
                throw new \InvalidArgumentException("A non-empty PSR-4 prefix must end with a namespace separator.");
            }
            $this->prefixLengthsPsr4[$prefix[0]][$prefix] = $length;
            $this->prefixDirsPsr4[$prefix] = (array) $paths;
        }
    }

/**
     * Turns on searching the include path for class files.
     *
     * @param bool $useIncludePath
     *
     * @return void
     */
    public function setUseIncludePath($useIncludePath)
    {
        $this->useIncludePath = $useIncludePath;
    }

/**
     * Can be used to check if the autoloader uses the include path to check
     * for classes.
     *
     * @return bool
     */
    public function getUseIncludePath()
    {
        return $this->useIncludePath;
    }

/**
     * Turns off searching the prefix and fallback directories for classes
     * that have not been registered with the class map.
     *
     * @param bool $classMapAuthoritative
     *
     * @return void
     */
    public function setClassMapAuthoritative($classMapAuthoritative)
    {
        $this->classMapAuthoritative = $classMapAuthoritative;
    }

/**
     * Should class lookup fail if not found in the current class map?
     *
     * @return bool
     */
    public function isClassMapAuthoritative()
    {
        return $this->classMapAuthoritative;
    }

/**
     * APCu prefix to use to cache found/not-found classes, if the extension is enabled.
     *
     * @param string|null $apcuPrefix
     *
     * @return void
     */
    public function setApcuPrefix($apcuPrefix)
    {
        $this->apcuPrefix = function_exists('apcu_fetch') && filter_var(ini_get('apc.enabled'), FILTER_VALIDATE_BOOLEAN) ? $apcuPrefix : null;
    }

/**
     * The APCu prefix in use, or null if APCu caching is not enabled.
     *
     * @return string|null
     */
    public function getApcuPrefix()
    {
        return $this->apcuPrefix;
    }

/**
     * Registers this instance as an autoloader.
     *
     * @param bool $prepend Whether to prepend the autoloader or not
     *
     * @return void
     */
    public function register($prepend = false)
    {
        spl_autoload_register(array($this, 'loadClass'), true, $prepend);

if (null === $this->vendorDir) {
            return;
        }

if ($prepend) {
            self::$registeredLoaders = array($this->vendorDir => $this) + self::$registeredLoaders;
        } else {
            unset(self::$registeredLoaders[$this->vendorDir]);
            self::$registeredLoaders[$this->vendorDir] = $this;
        }
    }

/**
     * Unregisters this instance as an autoloader.
     *
     * @return void
     */
    public function unregister()
    {
        spl_autoload_unregister(array($this, 'loadClass'));

if (null !== $this->vendorDir) {
            unset(self::$registeredLoaders[$this->vendorDir]);
        }
    }

/**
     * Loads the given class or interface.
     *
     * @param  string    $class The name of the class
     * @return true|null True if loaded, null otherwise
     */
    public function loadClass($class)
    {
        if ($file = $this->findFile($class)) {
            includeFile($file);

return true;
        }

return null;
    }

/**
     * Finds the path to the file where the class is defined.
     *
     * @param string $class The name of the class
     *
     * @return string|false The path if found, false otherwise
     */
    public function findFile($class)
    {
        // class map lookup
        if (isset($this->classMap[$class])) {
            return $this->classMap[$class];
        }
        if ($this->classMapAuthoritative || isset($this->missingClasses[$class])) {
            return false;
        }
        if (null !== $this->apcuPrefix) {
            $file = apcu_fetch($this->apcuPrefix.$class, $hit);
            if ($hit) {
                return $file;
            }
        }

$file = $this->findFileWithExtension($class, '.php');

// Search for Hack files if we are running on HHVM
        if (false === $file && defined('HHVM_VERSION')) {
            $file = $this->findFileWithExtension($class, '.hh');
        }

if (null !== $this->apcuPrefix) {
            apcu_add($this->apcuPrefix.$class, $file);
        }

if (false === $file) {
            // Remember that this class does not exist.
            $this->missingClasses[$class] = true;
        }

return $file;
    }

/**
     * Returns the currently registered loaders indexed by their corresponding vendor directories.
     *
     * @return self[]
     */
    public static function getRegisteredLoaders()
    {
        return self::$registeredLoaders;
    }

/**
     * @param  string       $class
     * @param  string       $ext
     * @return string|false
     */
    private function findFileWithExtension($class, $ext)
    {
        // PSR-4 lookup
        $logicalPathPsr4 = strtr($class, '\\', DIRECTORY_SEPARATOR) . $ext;

$first = $class[0];
        if (isset($this->prefixLengthsPsr4[$first])) {
            $subPath = $class;
            while (false !== $lastPos = strrpos($subPath, '\\')) {
                $subPath = substr($subPath, 0, $lastPos);
                $search = $subPath . '\\';
                if (isset($this->prefixDirsPsr4[$search])) {
                    $pathEnd = DIRECTORY_SEPARATOR . substr($logicalPathPsr4, $lastPos + 1);
                    foreach ($this->prefixDirsPsr4[$search] as $dir) {
                        if (file_exists($file = $dir . $pathEnd)) {
                            return $file;
                        }
                    }
                }
            }
        }

// PSR-4 fallback dirs
        foreach ($this->fallbackDirsPsr4 as $dir) {
            if (file_exists($file = $dir . DIRECTORY_SEPARATOR . $logicalPathPsr4)) {
                return $file;
            }
        }

// PSR-0 lookup
        if (false !== $pos = strrpos($class, '\\')) {
            // namespaced class name
            $logicalPathPsr0 = substr($logicalPathPsr4, 0, $pos + 1)
                . strtr(substr($logicalPathPsr4, $pos + 1), '_', DIRECTORY_SEPARATOR);
        } else {
            // PEAR-like class name
            $logicalPathPsr0 = strtr($class, '_', DIRECTORY_SEPARATOR) . $ext;
        }

if (isset($this->prefixesPsr0[$first])) {
            foreach ($this->prefixesPsr0[$first] as $prefix => $dirs) {
                if (0 === strpos($class, $prefix)) {
                    foreach ($dirs as $dir) {
                        if (file_exists($file = $dir . DIRECTORY_SEPARATOR . $logicalPathPsr0)) {
                            return $file;
                        }
                    }
                }
            }
        }

// PSR-0 fallback dirs
        foreach ($this->fallbackDirsPsr0 as $dir) {
            if (file_exists($file = $dir . DIRECTORY_SEPARATOR . $logicalPathPsr0)) {
                return $file;
            }
        }

// PSR-0 include paths.
        if ($this->useIncludePath && $file = stream_resolve_include_path($logicalPathPsr0)) {
            return $file;
        }

return false;
    }
}

/**
 * Scope isolated include.
 *
 * Prevents access to $this/self from included files.
 *
 * @param  string $file
 * @return void
 * @private
 */
function includeFile($file)
{
    include $file;
}
<?php

namespace Composer\Autoload;

/** @var bool */
    private $useIncludePath = false;

/**
     * @var string[]
     * @psalm-var array<string, string>
     */
    private $classMap = array();

/** @var bool */
    private $classMapAuthoritative = false;

/**
     * @var bool[]
     * @psalm-var array<string, bool>
     */
    private $missingClasses = array();

/** @var ?string */
    private $apcuPrefix;

/**
     * @var self[]
     */
    private static $registeredLoaders = array();

/**
     * @param ?string $vendorDir
     */
    public function __construct($vendorDir = null)
    {
        $this->vendorDir = $vendorDir;
    }

return array();
    }

/**
     * @return array[]
     * @psalm-return array<string, array<int, string>>
     */
    public function getPrefixesPsr4()
    {
        return $this->prefixDirsPsr4;
    }

/**
     * @return array[]
     * @psalm-return array<string, string>
     */
    public function getFallbackDirs()
    {
        return $this->fallbackDirsPsr0;
    }

/**
     * @return array[]
     * @psalm-return array<string, string>
     */
    public function getFallbackDirsPsr4()
    {
        return $this->fallbackDirsPsr4;
    }

/**
     * @return string[] Array of classname => path
     * @psalm-return array<string, string>
     */
    public function getClassMap()
    {
        return $this->classMap;
    }

return;
        }

$first = $prefix[0];
        if (!isset($this->prefixesPsr0[$first][$prefix])) {
            $this->prefixesPsr0[$first][$prefix] = (array) $paths;

/**
     * The APCu prefix in use, or null if APCu caching is not enabled.
     *
     * @return string|null
     */
    public function getApcuPrefix()
    {
        return $this->apcuPrefix;
    }

if (null === $this->vendorDir) {
            return;
        }

/**
     * Unregisters this instance as an autoloader.
     *
     * @return void
     */
    public function unregister()
    {
        spl_autoload_unregister(array($this, 'loadClass'));

if (null !== $this->vendorDir) {
            unset(self::$registeredLoaders[$this->vendorDir]);
        }
    }

return true;
        }

return null;
    }

$file = $this->findFileWithExtension($class, '.php');

// Search for Hack files if we are running on HHVM
        if (false === $file && defined('HHVM_VERSION')) {
            $file = $this->findFileWithExtension($class, '.hh');
        }

if (null !== $this->apcuPrefix) {
            apcu_add($this->apcuPrefix.$class, $file);
        }

if (false === $file) {
            // Remember that this class does not exist.
            $this->missingClasses[$class] = true;
        }

return $file;
    }

// PSR-0 include paths.
        if ($this->useIncludePath && $file = stream_resolve_include_path($logicalPathPsr0)) {
            return $file;
        }

return false;
    }
}

namespace Composer\Autoload;

use Composer\Pcre\Preg;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 * @internal
 */
class PhpFileCleaner
{
    /** @var array<array{name: string, length: int, pattern: string}> */
    private static $typeConfig;

/** @var string */
    private static $restPattern;

/**
     * @readonly
     * @var string
     */
    private $contents;

/**
     * @readonly
     * @var int
     */
    private $len;

/**
     * @readonly
     * @var int
     */
    private $maxMatches;

/** @var int */
    private $index = 0;

/**
     * @param string[] $types
     * @return void
     */
    public static function setTypeConfig($types)
    {
        foreach ($types as $type) {
            self::$typeConfig[$type[0]] = array(
                'name' => $type,
                'length' => \strlen($type),
                'pattern' => '{.\b(?<![\$:>])'.$type.'\s++[a-zA-Z_\x7f-\xff:][a-zA-Z0-9_\x7f-\xff:\-]*+}Ais',
            );
        }

self::$restPattern = '{[^?"\'</'.implode('', array_keys(self::$typeConfig)).']+}A';
    }

/**
     * @param string $contents
     * @param int $maxMatches
     */
    public function __construct($contents, $maxMatches)
    {
        $this->contents = $contents;
        $this->len = \strlen($this->contents);
        $this->maxMatches = $maxMatches;
    }

/**
     * @return string
     */
    public function clean()
    {
        $clean = '';

while ($this->index < $this->len) {
            $this->skipToPhp();
            $clean .= '<?';

while ($this->index < $this->len) {
                $char = $this->contents[$this->index];
                if ($char === '?' && $this->peek('>')) {
                    $clean .= '?>';
                    $this->index += 2;
                    continue 2;
                }

if ($char === '"') {
                    $this->skipString('"');
                    $clean .= 'null';
                    continue;
                }

if ($char === "'") {
                    $this->skipString("'");
                    $clean .= 'null';
                    continue;
                }

if ($char === "<" && $this->peek('<') && $this->match('{<<<[ \t]*+([\'"]?)([a-zA-Z_\x80-\xff][a-zA-Z0-9_\x80-\xff]*+)\\1(?:\r\n|\n|\r)}A', $match)) {
                    $this->index += \strlen($match[0]);
                    $this->skipHeredoc($match[2]);
                    $clean .= 'null';
                    continue;
                }

if ($char === '/') {
                    if ($this->peek('/')) {
                        $this->skipToNewline();
                        continue;
                    }
                    if ($this->peek('*')) {
                        $this->skipComment();
                        continue;
                    }
                }

if ($this->maxMatches === 1 && isset(self::$typeConfig[$char])) {
                    $type = self::$typeConfig[$char];
                    if (
                        \substr($this->contents, $this->index, $type['length']) === $type['name']
                        && Preg::isMatch($type['pattern'], $this->contents, $match, 0, $this->index - 1)
                    ) {
                        $clean .= $match[0];

return $clean;
                    }
                }

$this->index += 1;
                if ($this->match(self::$restPattern, $match)) {
                    $clean .= $char . $match[0];
                    $this->index += \strlen($match[0]);
                } else {
                    $clean .= $char;
                }
            }
        }

return $clean;
    }

/**
     * @return void
     */
    private function skipToPhp()
    {
        while ($this->index < $this->len) {
            if ($this->contents[$this->index] === '<' && $this->peek('?')) {
                $this->index += 2;
                break;
            }

$this->index += 1;
        }
    }

/**
     * @param string $delimiter
     * @return void
     */
    private function skipString($delimiter)
    {
        $this->index += 1;
        while ($this->index < $this->len) {
            if ($this->contents[$this->index] === '\\' && ($this->peek('\\') || $this->peek($delimiter))) {
                $this->index += 2;
                continue;
            }
            if ($this->contents[$this->index] === $delimiter) {
                $this->index += 1;
                break;
            }
            $this->index += 1;
        }
    }

/**
     * @return void
     */
    private function skipComment()
    {
        $this->index += 2;
        while ($this->index < $this->len) {
            if ($this->contents[$this->index] === '*' && $this->peek('/')) {
                $this->index += 2;
                break;
            }

$this->index += 1;
        }
    }

/**
     * @return void
     */
    private function skipToNewline()
    {
        while ($this->index < $this->len) {
            if ($this->contents[$this->index] === "\r" || $this->contents[$this->index] === "\n") {
                return;
            }
            $this->index += 1;
        }
    }

/**
     * @param string $delimiter
     * @return void
     */
    private function skipHeredoc($delimiter)
    {
        $firstDelimiterChar = $delimiter[0];
        $delimiterLength = \strlen($delimiter);
        $delimiterPattern = '{'.preg_quote($delimiter).'(?![a-zA-Z0-9_\x80-\xff])}A';

while ($this->index < $this->len) {
            // check if we find the delimiter after some spaces/tabs
            switch ($this->contents[$this->index]) {
                case "\t":
                case " ":
                    $this->index += 1;
                    continue 2;
                case $firstDelimiterChar:
                    if (
                        \substr($this->contents, $this->index, $delimiterLength) === $delimiter
                        && $this->match($delimiterPattern)
                    ) {
                        $this->index += $delimiterLength;

return;
                    }
                    break;
            }

// skip the rest of the line
            while ($this->index < $this->len) {
                $this->skipToNewline();

// skip newlines
                while ($this->index < $this->len && ($this->contents[$this->index] === "\r" || $this->contents[$this->index] === "\n")) {
                    $this->index += 1;
                }

break;
            }
        }
    }

/**
     * @param string $char
     * @return bool
     */
    private function peek($char)
    {
        return $this->index + 1 < $this->len && $this->contents[$this->index + 1] === $char;
    }

/**
     * @param string $regex
     * @param ?array<int, string> $match
     * @return bool
     */
    private function match($regex, array &$match = null)
    {
        return Preg::isMatch($regex, $this->contents, $match, 0, $this->index);
    }
}
<?php

namespace Composer\Autoload;

use Composer\Config;
use Composer\EventDispatcher\EventDispatcher;
use Composer\Filter\PlatformRequirementFilter\IgnoreAllPlatformRequirementFilter;
use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterFactory;
use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterInterface;
use Composer\Installer\InstallationManager;
use Composer\IO\IOInterface;
use Composer\Package\AliasPackage;
use Composer\Package\PackageInterface;
use Composer\Package\RootPackageInterface;
use Composer\Pcre\Preg;
use Composer\Repository\InstalledRepositoryInterface;
use Composer\Semver\Constraint\Bound;
use Composer\Util\Filesystem;
use Composer\Util\Platform;
use Composer\Script\ScriptEvents;
use Composer\Util\PackageSorter;
use Composer\Json\JsonFile;

/**
 * @author Igor Wiedler <igor@wiedler.ch>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class AutoloadGenerator
{
    /**
     * @var EventDispatcher
     */
    private $eventDispatcher;

/**
     * @var ?IOInterface
     */
    private $io;

/**
     * @var ?bool
     */
    private $devMode = null;

/**
     * @var bool
     */
    private $classMapAuthoritative = false;

/**
     * @var bool
     */
    private $apcu = false;

/**
     * @var string|null
     */
    private $apcuPrefix;

/**
     * @var bool
     */
    private $runScripts = false;

/**
     * @var PlatformRequirementFilterInterface
     */
    private $platformRequirementFilter;

public function __construct(EventDispatcher $eventDispatcher, IOInterface $io = null)
    {
        $this->eventDispatcher = $eventDispatcher;
        $this->io = $io;

$this->platformRequirementFilter = PlatformRequirementFilterFactory::ignoreNothing();
    }

/**
     * @param bool $devMode
     * @return void
     */
    public function setDevMode($devMode = true)
    {
        $this->devMode = (bool) $devMode;
    }

/**
     * Whether generated autoloader considers the class map authoritative.
     *
     * @param bool $classMapAuthoritative
     * @return void
     */
    public function setClassMapAuthoritative($classMapAuthoritative)
    {
        $this->classMapAuthoritative = (bool) $classMapAuthoritative;
    }

/**
     * Whether generated autoloader considers APCu caching.
     *
     * @param bool        $apcu
     * @param string|null $apcuPrefix
     * @return void
     */
    public function setApcu($apcu, $apcuPrefix = null)
    {
        $this->apcu = (bool) $apcu;
        $this->apcuPrefix = $apcuPrefix !== null ? (string) $apcuPrefix : $apcuPrefix;
    }

/**
     * Whether to run scripts or not
     *
     * @param bool $runScripts
     * @return void
     */
    public function setRunScripts($runScripts = true)
    {
        $this->runScripts = (bool) $runScripts;
    }

/**
     * Whether platform requirements should be ignored.
     *
     * If this is set to true, the platform check file will not be generated
     * If this is set to false, the platform check file will be generated with all requirements
     * If this is set to string[], those packages will be ignored from the platform check file
     *
     * @param bool|string[] $ignorePlatformReqs
     * @return void
     *
     * @deprecated use setPlatformRequirementFilter instead
     */
    public function setIgnorePlatformRequirements($ignorePlatformReqs)
    {
        trigger_error('AutoloadGenerator::setIgnorePlatformRequirements is deprecated since Composer 2.2, use setPlatformRequirementFilter instead.', E_USER_DEPRECATED);

$this->setPlatformRequirementFilter(PlatformRequirementFilterFactory::fromBoolOrList($ignorePlatformReqs));
    }

/**
     * @return void
     */
    public function setPlatformRequirementFilter(PlatformRequirementFilterInterface $platformRequirementFilter)
    {
        $this->platformRequirementFilter = $platformRequirementFilter;
    }

/**
     * @param string $targetDir
     * @param bool $scanPsrPackages
     * @param string $suffix
     * @return int
     * @throws \Seld\JsonLint\ParsingException
     */
    public function dump(Config $config, InstalledRepositoryInterface $localRepo, RootPackageInterface $rootPackage, InstallationManager $installationManager, $targetDir, $scanPsrPackages = false, $suffix = '')
    {
        if ($this->classMapAuthoritative) {
            // Force scanPsrPackages when classmap is authoritative
            $scanPsrPackages = true;
        }

// auto-set devMode based on whether dev dependencies are installed or not
        if (null === $this->devMode) {
            // we assume no-dev mode if no vendor dir is present or it is too old to contain dev information
            $this->devMode = false;

$installedJson = new JsonFile($config->get('vendor-dir').'/composer/installed.json');
            if ($installedJson->exists()) {
                $installedJson = $installedJson->read();
                if (isset($installedJson['dev'])) {
                    $this->devMode = $installedJson['dev'];
                }
            }
        }

if ($this->runScripts) {
            // set COMPOSER_DEV_MODE in case not set yet so it is available in the dump-autoload event listeners
            if (!isset($_SERVER['COMPOSER_DEV_MODE'])) {
                Platform::putEnv('COMPOSER_DEV_MODE', $this->devMode ? '1' : '0');
            }

$this->eventDispatcher->dispatchScript(ScriptEvents::PRE_AUTOLOAD_DUMP, $this->devMode, array(), array(
                'optimize' => (bool) $scanPsrPackages,
            ));
        }

$filesystem = new Filesystem();
        $filesystem->ensureDirectoryExists($config->get('vendor-dir'));
        // Do not remove double realpath() calls.
        // Fixes failing Windows realpath() implementation.
        // See https://bugs.php.net/bug.php?id=72738
        $basePath = $filesystem->normalizePath(realpath(realpath(getcwd())));
        $vendorPath = $filesystem->normalizePath(realpath(realpath($config->get('vendor-dir'))));
        $useGlobalIncludePath = (bool) $config->get('use-include-path');
        $prependAutoloader = $config->get('prepend-autoloader') === false ? 'false' : 'true';
        $targetDir = $vendorPath.'/'.$targetDir;
        $filesystem->ensureDirectoryExists($targetDir);

$vendorPathCode = $filesystem->findShortestPathCode(realpath($targetDir), $vendorPath, true);
        $vendorPathCode52 = str_replace('__DIR__', 'dirname(__FILE__)', $vendorPathCode);
        $vendorPathToTargetDirCode = $filesystem->findShortestPathCode($vendorPath, realpath($targetDir), true);

$appBaseDirCode = $filesystem->findShortestPathCode($vendorPath, $basePath, true);
        $appBaseDirCode = str_replace('__DIR__', '$vendorDir', $appBaseDirCode);

$namespacesFile = <<<EOF
<?php

// autoload_namespaces.php @generated by Composer

\$vendorDir = $vendorPathCode52;
\$baseDir = $appBaseDirCode;

return array(

EOF;

$psr4File = <<<EOF
<?php

// autoload_psr4.php @generated by Composer

\$vendorDir = $vendorPathCode52;
\$baseDir = $appBaseDirCode;

return array(

EOF;

// Collect information from all packages.
        $devPackageNames = $localRepo->getDevPackageNames();
        $packageMap = $this->buildPackageMap($installationManager, $rootPackage, $localRepo->getCanonicalPackages());
        if ($this->devMode) {
            // if dev mode is enabled, then we do not filter any dev packages out so disable this entirely
            $filteredDevPackages = false;
        } else {
            // if the list of dev package names is available we use that straight, otherwise pass true which means use legacy algo to figure them out
            $filteredDevPackages = $devPackageNames ?: true;
        }
        $autoloads = $this->parseAutoloads($packageMap, $rootPackage, $filteredDevPackages);

// Process the 'psr-0' base directories.
        foreach ($autoloads['psr-0'] as $namespace => $paths) {
            $exportedPaths = array();
            foreach ($paths as $path) {
                $exportedPaths[] = $this->getPathCode($filesystem, $basePath, $vendorPath, $path);
            }
            $exportedPrefix = var_export($namespace, true);
            $namespacesFile .= "    $exportedPrefix => ";
            $namespacesFile .= "array(".implode(', ', $exportedPaths)."),\n";
        }
        $namespacesFile .= ");\n";

// Process the 'psr-4' base directories.
        foreach ($autoloads['psr-4'] as $namespace => $paths) {
            $exportedPaths = array();
            foreach ($paths as $path) {
                $exportedPaths[] = $this->getPathCode($filesystem, $basePath, $vendorPath, $path);
            }
            $exportedPrefix = var_export($namespace, true);
            $psr4File .= "    $exportedPrefix => ";
            $psr4File .= "array(".implode(', ', $exportedPaths)."),\n";
        }
        $psr4File .= ");\n";

$classmapFile = <<<EOF
<?php

// autoload_classmap.php @generated by Composer

\$vendorDir = $vendorPathCode52;
\$baseDir = $appBaseDirCode;

return array(

EOF;

// add custom psr-0 autoloading if the root package has a target dir
        $targetDirLoader = null;
        $mainAutoload = $rootPackage->getAutoload();
        if ($rootPackage->getTargetDir() && !empty($mainAutoload['psr-0'])) {
            $levels = substr_count($filesystem->normalizePath($rootPackage->getTargetDir()), '/') + 1;
            $prefixes = implode(', ', array_map(function ($prefix) {
                return var_export($prefix, true);
            }, array_keys($mainAutoload['psr-0'])));
            $baseDirFromTargetDirCode = $filesystem->findShortestPathCode($targetDir, $basePath, true);

$targetDirLoader = <<<EOF

public static function autoload(\$class)
    {
        \$dir = $baseDirFromTargetDirCode . '/';
        \$prefixes = array($prefixes);
        foreach (\$prefixes as \$prefix) {
            if (0 !== strpos(\$class, \$prefix)) {
                continue;
            }
            \$path = \$dir . implode('/', array_slice(explode('\\\\', \$class), $levels)).'.php';
            if (!\$path = stream_resolve_include_path(\$path)) {
                return false;
            }
            require \$path;

return true;
        }
    }

EOF;
        }

$excluded = null;
        if (!empty($autoloads['exclude-from-classmap'])) {
            $excluded = $autoloads['exclude-from-classmap'];
        }

$classMap = array();
        $ambiguousClasses = array();
        $scannedFiles = array();
        foreach ($autoloads['classmap'] as $dir) {
            $classMap = $this->addClassMapCode($filesystem, $basePath, $vendorPath, $dir, $excluded, null, null, $classMap, $ambiguousClasses, $scannedFiles);
        }

if ($scanPsrPackages) {
            $namespacesToScan = array();

// Scan the PSR-0/4 directories for class files, and add them to the class map
            foreach (array('psr-4', 'psr-0') as $psrType) {
                foreach ($autoloads[$psrType] as $namespace => $paths) {
                    $namespacesToScan[$namespace][] = array('paths' => $paths, 'type' => $psrType);
                }
            }

krsort($namespacesToScan);

foreach ($namespacesToScan as $namespace => $groups) {
                foreach ($groups as $group) {
                    foreach ($group['paths'] as $dir) {
                        $dir = $filesystem->normalizePath($filesystem->isAbsolutePath($dir) ? $dir : $basePath.'/'.$dir);
                        if (!is_dir($dir)) {
                            continue;
                        }

$classMap = $this->addClassMapCode($filesystem, $basePath, $vendorPath, $dir, $excluded, $namespace, $group['type'], $classMap, $ambiguousClasses, $scannedFiles);
                    }
                }
            }
        }

foreach ($ambiguousClasses as $className => $ambiguousPaths) {
            $cleanPath = str_replace(array('$vendorDir . \'', '$baseDir . \'', "',\n"), array($vendorPath, $basePath, ''), $classMap[$className]);

$this->io->writeError(
                '<warning>Warning: Ambiguous class resolution, "'.$className.'"'.
                ' was found '. (count($ambiguousPaths) + 1) .'x: in "'.$cleanPath.'" and "'. implode('", "', $ambiguousPaths) .'", the first will be used.</warning>'
            );
        }

$classMap['Composer\\InstalledVersions'] = "\$vendorDir . '/composer/InstalledVersions.php',\n";
        ksort($classMap);
        foreach ($classMap as $class => $code) {
            $classmapFile .= '    '.var_export($class, true).' => '.$code;
        }
        $classmapFile .= ");\n";

if (!$suffix) {
            if (!$config->get('autoloader-suffix') && Filesystem::isReadable($vendorPath.'/autoload.php')) {
                $content = file_get_contents($vendorPath.'/autoload.php');
                if (Preg::isMatch('{ComposerAutoloaderInit([^:\s]+)::}', $content, $match)) {
                    $suffix = $match[1];
                }
            }

if (!$suffix) {
                $suffix = $config->get('autoloader-suffix') ?: md5(uniqid('', true));
            }
        }

$filesystem->filePutContentsIfModified($targetDir.'/autoload_namespaces.php', $namespacesFile);
        $filesystem->filePutContentsIfModified($targetDir.'/autoload_psr4.php', $psr4File);
        $filesystem->filePutContentsIfModified($targetDir.'/autoload_classmap.php', $classmapFile);
        $includePathFilePath = $targetDir.'/include_paths.php';
        if ($includePathFileContents = $this->getIncludePathsFile($packageMap, $filesystem, $basePath, $vendorPath, $vendorPathCode52, $appBaseDirCode)) {
            $filesystem->filePutContentsIfModified($includePathFilePath, $includePathFileContents);
        } elseif (file_exists($includePathFilePath)) {
            unlink($includePathFilePath);
        }
        $includeFilesFilePath = $targetDir.'/autoload_files.php';
        if ($includeFilesFileContents = $this->getIncludeFilesFile($autoloads['files'], $filesystem, $basePath, $vendorPath, $vendorPathCode52, $appBaseDirCode)) {
            $filesystem->filePutContentsIfModified($includeFilesFilePath, $includeFilesFileContents);
        } elseif (file_exists($includeFilesFilePath)) {
            unlink($includeFilesFilePath);
        }
        $filesystem->filePutContentsIfModified($targetDir.'/autoload_static.php', $this->getStaticFile($suffix, $targetDir, $vendorPath, $basePath, $staticPhpVersion));
        $checkPlatform = $config->get('platform-check') && !($this->platformRequirementFilter instanceof IgnoreAllPlatformRequirementFilter);
        $platformCheckContent = null;
        if ($checkPlatform) {
            $platformCheckContent = $this->getPlatformCheck($packageMap, $config->get('platform-check'), $devPackageNames);
            if (null === $platformCheckContent) {
                $checkPlatform = false;
            }
        }
        if ($checkPlatform) {
            $filesystem->filePutContentsIfModified($targetDir.'/platform_check.php', $platformCheckContent);
        } elseif (file_exists($targetDir.'/platform_check.php')) {
            unlink($targetDir.'/platform_check.php');
        }
        $filesystem->filePutContentsIfModified($vendorPath.'/autoload.php', $this->getAutoloadFile($vendorPathToTargetDirCode, $suffix));
        $filesystem->filePutContentsIfModified($targetDir.'/autoload_real.php', $this->getAutoloadRealFile(true, (bool) $includePathFileContents, $targetDirLoader, (bool) $includeFilesFileContents, $vendorPathCode, $appBaseDirCode, $suffix, $useGlobalIncludePath, $prependAutoloader, $staticPhpVersion, $checkPlatform));

$filesystem->safeCopy(__DIR__.'/ClassLoader.php', $targetDir.'/ClassLoader.php');
        $filesystem->safeCopy(__DIR__.'/../../../LICENSE', $targetDir.'/LICENSE');

if ($this->runScripts) {
            $this->eventDispatcher->dispatchScript(ScriptEvents::POST_AUTOLOAD_DUMP, $this->devMode, array(), array(
                'optimize' => (bool) $scanPsrPackages,
            ));
        }

return count($classMap);
    }

/**
     * @param string $basePath
     * @param string $vendorPath
     * @param string $dir
     * @param ?array<int, string> $excluded
     * @param ?string $namespaceFilter
     * @param ?string $autoloadType
     * @param array<class-string, string> $classMap
     * @param array<class-string, array<int, string>> $ambiguousClasses
     * @param array<string, true> $scannedFiles
     * @return array<class-string, string>
     */
    private function addClassMapCode(Filesystem $filesystem, $basePath, $vendorPath, $dir, $excluded, $namespaceFilter, $autoloadType, array $classMap, array &$ambiguousClasses, array &$scannedFiles)
    {
        foreach ($this->generateClassMap($dir, $excluded, $namespaceFilter, $autoloadType, true, $scannedFiles) as $class => $path) {
            $pathCode = $this->getPathCode($filesystem, $basePath, $vendorPath, $path).",\n";
            if (!isset($classMap[$class])) {
                $classMap[$class] = $pathCode;
            } elseif ($this->io && $classMap[$class] !== $pathCode && !Preg::isMatch('{/(test|fixture|example|stub)s?/}i', strtr($classMap[$class].' '.$path, '\\', '/'))) {
                $ambiguousClasses[$class][] = $path;
            }
        }

return $classMap;
    }

/**
     * @param string $dir
     * @param ?array<int, string> $excluded
     * @param ?string $namespaceFilter
     * @param ?string $autoloadType
     * @param bool $showAmbiguousWarning
     * @param array<string, true> $scannedFiles
     * @return array<class-string, string>
     */
    private function generateClassMap($dir, $excluded, $namespaceFilter, $autoloadType, $showAmbiguousWarning, array &$scannedFiles)
    {
        if ($excluded) {
            // filter excluded patterns here to only use those matching $dir
            // exclude-from-classmap patterns are all realpath'd so we can only filter them if $dir exists so that realpath($dir) will work
            // if $dir does not exist, it should anyway not find anything there so no trouble
            if (file_exists($dir)) {
                // transform $dir in the same way that exclude-from-classmap patterns are transformed so we can match them against each other
                $dirMatch = preg_quote(strtr(realpath($dir), '\\', '/'));
                foreach ($excluded as $index => $pattern) {
                    // extract the constant string prefix of the pattern here, until we reach a non-escaped regex special character
                    $pattern = Preg::replace('{^(([^.+*?\[^\]$(){}=!<>|:\\\\#-]+|\\\\[.+*?\[^\]$(){}=!<>|:#-])*).*}', '$1', $pattern);
                    // if the pattern is not a subset or superset of $dir, it is unrelated and we skip it
                    if (0 !== strpos($pattern, $dirMatch) && 0 !== strpos($dirMatch, $pattern)) {
                        unset($excluded[$index]);
                    }
                }
            }

$excluded = $excluded ? '{(' . implode('|', $excluded) . ')}' : null;
        }

return ClassMapGenerator::createMap($dir, $excluded, $showAmbiguousWarning ? $this->io : null, $namespaceFilter, $autoloadType, $scannedFiles);
    }

/**
     * @param InstallationManager $installationManager
     * @param PackageInterface[] $packages
     * @return array<int, array{0: PackageInterface, 1: string}>
     */
    public function buildPackageMap(InstallationManager $installationManager, PackageInterface $rootPackage, array $packages)
    {
        // build package => install path map
        $packageMap = array(array($rootPackage, ''));

foreach ($packages as $package) {
            if ($package instanceof AliasPackage) {
                continue;
            }
            $this->validatePackage($package);

$packageMap[] = array(
                $package,
                $installationManager->getInstallPath($package),
            );
        }

return $packageMap;
    }

/**
     * @return void
     * @throws \InvalidArgumentException Throws an exception, if the package has illegal settings.
     */
    protected function validatePackage(PackageInterface $package)
    {
        $autoload = $package->getAutoload();
        if (!empty($autoload['psr-4']) && null !== $package->getTargetDir()) {
            $name = $package->getName();
            $package->getTargetDir();
            throw new \InvalidArgumentException("PSR-4 autoloading is incompatible with the target-dir property, remove the target-dir in package '$name'.");
        }
        if (!empty($autoload['psr-4'])) {
            foreach ($autoload['psr-4'] as $namespace => $dirs) {
                if ($namespace !== '' && '\\' !== substr($namespace, -1)) {
                    throw new \InvalidArgumentException("psr-4 namespaces must end with a namespace separator, '$namespace' does not, use '$namespace\\'.");
                }
            }
        }
    }

/**
     * Compiles an ordered list of namespace => path mappings
     *
     * @param array<int, array{0: PackageInterface, 1: string}> $packageMap array of array(package, installDir-relative-to-composer.json)
     * @param RootPackageInterface $rootPackage root package instance
     * @param bool|string[] $filteredDevPackages If an array, the list of packages that must be removed. If bool, whether to filter out require-dev packages
     * @return array
     * @phpstan-return array{
     *     'psr-0': array<string, array<string>>,
     *     'psr-4': array<string, array<string>>,
     *     'classmap': array<int, string>,
     *     'files': array<string, string>,
     *     'exclude-from-classmap': array<int, string>,
     * }
     */
    public function parseAutoloads(array $packageMap, PackageInterface $rootPackage, $filteredDevPackages = false)
    {
        $rootPackageMap = array_shift($packageMap);
        if (is_array($filteredDevPackages)) {
            $packageMap = array_filter($packageMap, function ($item) use ($filteredDevPackages) {
                return !in_array($item[0]->getName(), $filteredDevPackages, true);
            });
        } elseif ($filteredDevPackages) {
            $packageMap = $this->filterPackageMap($packageMap, $rootPackage);
        }
        $sortedPackageMap = $this->sortPackageMap($packageMap);
        $sortedPackageMap[] = $rootPackageMap;
        array_unshift($packageMap, $rootPackageMap);

$psr0 = $this->parseAutoloadsType($packageMap, 'psr-0', $rootPackage);
        $psr4 = $this->parseAutoloadsType($packageMap, 'psr-4', $rootPackage);
        $classmap = $this->parseAutoloadsType(array_reverse($sortedPackageMap), 'classmap', $rootPackage);
        $files = $this->parseAutoloadsType($sortedPackageMap, 'files', $rootPackage);
        $exclude = $this->parseAutoloadsType($sortedPackageMap, 'exclude-from-classmap', $rootPackage);

krsort($psr0);
        krsort($psr4);

return array(
            'psr-0' => $psr0,
            'psr-4' => $psr4,
            'classmap' => $classmap,
            'files' => $files,
            'exclude-from-classmap' => $exclude,
        );
    }

/**
     * Registers an autoloader based on an autoload-map returned by parseAutoloads
     *
     * @param array<string, mixed[]> $autoloads see parseAutoloads return value
     * @param ?string $vendorDir
     * @return ClassLoader
     */
    public function createLoader(array $autoloads, $vendorDir = null)
    {
        $loader = new ClassLoader($vendorDir);

if (isset($autoloads['psr-0'])) {
            foreach ($autoloads['psr-0'] as $namespace => $path) {
                $loader->add($namespace, $path);
            }
        }

if (isset($autoloads['psr-4'])) {
            foreach ($autoloads['psr-4'] as $namespace => $path) {
                $loader->addPsr4($namespace, $path);
            }
        }

if (isset($autoloads['classmap'])) {
            $excluded = null;
            if (!empty($autoloads['exclude-from-classmap'])) {
                $excluded = $autoloads['exclude-from-classmap'];
            }

$scannedFiles = array();
            foreach ($autoloads['classmap'] as $dir) {
                try {
                    $loader->addClassMap($this->generateClassMap($dir, $excluded, null, null, false, $scannedFiles));
                } catch (\RuntimeException $e) {
                    $this->io->writeError('<warning>'.$e->getMessage().'</warning>');
                }
            }
        }

return $loader;
    }

/**
     * @param array<int, array{0: PackageInterface, 1: string}> $packageMap
     * @param string $basePath
     * @param string $vendorPath
     * @param string $vendorPathCode
     * @param string $appBaseDirCode
     * @return ?string
     */
    protected function getIncludePathsFile(array $packageMap, Filesystem $filesystem, $basePath, $vendorPath, $vendorPathCode, $appBaseDirCode)
    {
        $includePaths = array();

foreach ($packageMap as $item) {
            list($package, $installPath) = $item;

if (null !== $package->getTargetDir() && strlen($package->getTargetDir()) > 0) {
                $installPath = substr($installPath, 0, -strlen('/'.$package->getTargetDir()));
            }

foreach ($package->getIncludePaths() as $includePath) {
                $includePath = trim($includePath, '/');
                $includePaths[] = empty($installPath) ? $includePath : $installPath.'/'.$includePath;
            }
        }

if (!$includePaths) {
            return null;
        }

$includePathsCode = '';
        foreach ($includePaths as $path) {
            $includePathsCode .= "    " . $this->getPathCode($filesystem, $basePath, $vendorPath, $path) . ",\n";
        }

return <<<EOF
<?php

// include_paths.php @generated by Composer

\$vendorDir = $vendorPathCode;
\$baseDir = $appBaseDirCode;

return array(
$includePathsCode);

EOF;
    }

/**
     * @param array<string, string> $files
     * @param string $basePath
     * @param string $vendorPath
     * @param string $vendorPathCode
     * @param string $appBaseDirCode
     * @return ?string
     */
    protected function getIncludeFilesFile(array $files, Filesystem $filesystem, $basePath, $vendorPath, $vendorPathCode, $appBaseDirCode)
    {
        $filesCode = '';
        foreach ($files as $fileIdentifier => $functionFile) {
            $filesCode .= '    ' . var_export($fileIdentifier, true) . ' => '
                . $this->getPathCode($filesystem, $basePath, $vendorPath, $functionFile) . ",\n";
        }

if (!$filesCode) {
            return null;
        }

return <<<EOF
<?php

// autoload_files.php @generated by Composer

\$vendorDir = $vendorPathCode;
\$baseDir = $appBaseDirCode;

return array(
$filesCode);

EOF;
    }

/**
     * @param string $basePath
     * @param string $vendorPath
     * @param string $path
     * @return string
     */
    protected function getPathCode(Filesystem $filesystem, $basePath, $vendorPath, $path)
    {
        if (!$filesystem->isAbsolutePath($path)) {
            $path = $basePath . '/' . $path;
        }
        $path = $filesystem->normalizePath($path);

$baseDir = '';
        if (strpos($path.'/', $vendorPath.'/') === 0) {
            $path = substr($path, strlen($vendorPath));
            $baseDir = '$vendorDir';

if ($path !== false) {
                $baseDir .= " . ";
            }
        } else {
            $path = $filesystem->normalizePath($filesystem->findShortestPath($basePath, $path, true));
            if (!$filesystem->isAbsolutePath($path)) {
                $baseDir = '$baseDir . ';
                $path = '/' . $path;
            }
        }

if (strpos($path, '.phar') !== false) {
            $baseDir = "'phar://' . " . $baseDir;
        }

return $baseDir . var_export($path, true);
    }

/**
     * @param array<int, array{0: PackageInterface, 1: string}> $packageMap
     * @param bool $checkPlatform
     * @param string[] $devPackageNames
     * @return ?string
     */
    protected function getPlatformCheck(array $packageMap, $checkPlatform, array $devPackageNames)
    {
        $lowestPhpVersion = Bound::zero();
        $requiredExtensions = array();
        $extensionProviders = array();

foreach ($packageMap as $item) {
            $package = $item[0];
            foreach (array_merge($package->getReplaces(), $package->getProvides()) as $link) {
                if (Preg::isMatch('{^ext-(.+)$}iD', $link->getTarget(), $match)) {
                    $extensionProviders[$match[1]][] = $link->getConstraint();
                }
            }
        }

foreach ($packageMap as $item) {
            $package = $item[0];
            // skip dev dependencies platform requirements as platform-check really should only be a production safeguard
            if (in_array($package->getName(), $devPackageNames, true)) {
                continue;
            }

foreach ($package->getRequires() as $link) {
                if ($this->platformRequirementFilter->isIgnored($link->getTarget())) {
                    continue;
                }

if ('php' === $link->getTarget()) {
                    $constraint = $link->getConstraint();
                    if ($constraint->getLowerBound()->compareTo($lowestPhpVersion, '>')) {
                        $lowestPhpVersion = $constraint->getLowerBound();
                    }
                }

if ($checkPlatform === true && Preg::isMatch('{^ext-(.+)$}iD', $link->getTarget(), $match)) {
                    // skip extension checks if they have a valid provider/replacer
                    if (isset($extensionProviders[$match[1]])) {
                        foreach ($extensionProviders[$match[1]] as $provided) {
                            if ($provided->matches($link->getConstraint())) {
                                continue 2;
                            }
                        }
                    }

if ($match[1] === 'zend-opcache') {
                        $match[1] = 'zend opcache';
                    }

$extension = var_export($match[1], true);
                    if ($match[1] === 'pcntl' || $match[1] === 'readline') {
                        $requiredExtensions[$extension] = "PHP_SAPI !== 'cli' || extension_loaded($extension) || \$missingExtensions[] = $extension;\n";
                    } else {
                        $requiredExtensions[$extension] = "extension_loaded($extension) || \$missingExtensions[] = $extension;\n";
                    }
                }
            }
        }

ksort($requiredExtensions);

$formatToPhpVersionId = function (Bound $bound) {
            if ($bound->isZero()) {
                return 0;
            }

if ($bound->isPositiveInfinity()) {
                return 99999;
            }

$version = str_replace('-', '.', $bound->getVersion());
            $chunks = array_map('intval', explode('.', $version));

return $chunks[0] * 10000 + $chunks[1] * 100 + $chunks[2];
        };

$formatToHumanReadable = function (Bound $bound) {
            if ($bound->isZero()) {
                return 0;
            }

if ($bound->isPositiveInfinity()) {
                return 99999;
            }

$version = str_replace('-', '.', $bound->getVersion());
            $chunks = explode('.', $version);
            $chunks = array_slice($chunks, 0, 3);

return implode('.', $chunks);
        };

$requiredPhp = '';
        $requiredPhpError = '';
        if (!$lowestPhpVersion->isZero()) {
            $operator = $lowestPhpVersion->isInclusive() ? '>=' : '>';
            $requiredPhp = 'PHP_VERSION_ID '.$operator.' '.$formatToPhpVersionId($lowestPhpVersion);
            $requiredPhpError = '"'.$operator.' '.$formatToHumanReadable($lowestPhpVersion).'"';
        }

if ($requiredPhp) {
            $requiredPhp = <<<PHP_CHECK

if (!($requiredPhp)) {
    \$issues[] = 'Your Composer dependencies require a PHP version $requiredPhpError. You are running ' . PHP_VERSION . '.';
}

PHP_CHECK;
        }

$requiredExtensions = implode('', $requiredExtensions);
        if ('' !== $requiredExtensions) {
            $requiredExtensions = <<<EXT_CHECKS

\$missingExtensions = array();
$requiredExtensions
if (\$missingExtensions) {
    \$issues[] = 'Your Composer dependencies require the following PHP extensions to be installed: ' . implode(', ', \$missingExtensions) . '.';
}

EXT_CHECKS;
        }

if (!$requiredPhp && !$requiredExtensions) {
            return null;
        }

return <<<PLATFORM_CHECK
<?php

// platform_check.php @generated by Composer

\$issues = array();
${requiredPhp}${requiredExtensions}
if (\$issues) {
    if (!headers_sent()) {
        header('HTTP/1.1 500 Internal Server Error');
    }
    if (!ini_get('display_errors')) {
        if (PHP_SAPI === 'cli' || PHP_SAPI === 'phpdbg') {
            fwrite(STDERR, 'Composer detected issues in your platform:' . PHP_EOL.PHP_EOL . implode(PHP_EOL, \$issues) . PHP_EOL.PHP_EOL);
        } elseif (!headers_sent()) {
            echo 'Composer detected issues in your platform:' . PHP_EOL.PHP_EOL . str_replace('You are running '.PHP_VERSION.'.', '', implode(PHP_EOL, \$issues)) . PHP_EOL.PHP_EOL;
        }
    }
    trigger_error(
        'Composer detected issues in your platform: ' . implode(' ', \$issues),
        E_USER_ERROR
    );
}

PLATFORM_CHECK;
    }

/**
     * @param  string $vendorPathToTargetDirCode
     * @param  string $suffix
     * @return string
     */
    protected function getAutoloadFile($vendorPathToTargetDirCode, $suffix)
    {
        $lastChar = $vendorPathToTargetDirCode[strlen($vendorPathToTargetDirCode) - 1];
        if ("'" === $lastChar || '"' === $lastChar) {
            $vendorPathToTargetDirCode = substr($vendorPathToTargetDirCode, 0, -1).'/autoload_real.php'.$lastChar;
        } else {
            $vendorPathToTargetDirCode .= " . '/autoload_real.php'";
        }

return <<<AUTOLOAD
<?php

// autoload.php @generated by Composer

require_once $vendorPathToTargetDirCode;

return ComposerAutoloaderInit$suffix::getLoader();

AUTOLOAD;
    }

/**
     * @param bool $useClassMap
     * @param bool $useIncludePath
     * @param ?string $targetDirLoader
     * @param bool $useIncludeFiles
     * @param string $vendorPathCode unused in this method
     * @param string $appBaseDirCode unused in this method
     * @param string $suffix
     * @param bool $useGlobalIncludePath
     * @param string $prependAutoloader 'true'|'false'
     * @param string $staticPhpVersion
     * @param bool $checkPlatform
     * @return string
     */
    protected function getAutoloadRealFile($useClassMap, $useIncludePath, $targetDirLoader, $useIncludeFiles, $vendorPathCode, $appBaseDirCode, $suffix, $useGlobalIncludePath, $prependAutoloader, $staticPhpVersion, $checkPlatform)
    {
        $file = <<<HEADER
<?php

// autoload_real.php @generated by Composer

class ComposerAutoloaderInit$suffix
{
    private static \$loader;

public static function loadClassLoader(\$class)
    {
        if ('Composer\\Autoload\\ClassLoader' === \$class) {
            require __DIR__ . '/ClassLoader.php';
        }
    }

/**
     * @return \Composer\Autoload\ClassLoader
     */
    public static function getLoader()
    {
        if (null !== self::\$loader) {
            return self::\$loader;
        }

HEADER;

if ($checkPlatform) {
            $file .= <<<'PLATFORM_CHECK'
        require __DIR__ . '/platform_check.php';

PLATFORM_CHECK;
        }

$file .= <<<CLASSLOADER_INIT
        spl_autoload_register(array('ComposerAutoloaderInit$suffix', 'loadClassLoader'), true, $prependAutoloader);
        self::\$loader = \$loader = new \\Composer\\Autoload\\ClassLoader(\\dirname(\\dirname(__FILE__)));
        spl_autoload_unregister(array('ComposerAutoloaderInit$suffix', 'loadClassLoader'));

CLASSLOADER_INIT;

if ($useIncludePath) {
            $file .= <<<'INCLUDE_PATH'
        $includePaths = require __DIR__ . '/include_paths.php';
        $includePaths[] = get_include_path();
        set_include_path(implode(PATH_SEPARATOR, $includePaths));

INCLUDE_PATH;
        }

$file .= <<<STATIC_INIT
        \$useStaticLoader = PHP_VERSION_ID >= $staticPhpVersion && !defined('HHVM_VERSION') && (!function_exists('zend_loader_file_encoded') || !zend_loader_file_encoded());
        if (\$useStaticLoader) {
            require __DIR__ . '/autoload_static.php';

call_user_func(\Composer\Autoload\ComposerStaticInit$suffix::getInitializer(\$loader));
        } else {

STATIC_INIT;

if (!$this->classMapAuthoritative) {
            $file .= <<<'PSR04'
            $map = require __DIR__ . '/autoload_namespaces.php';
            foreach ($map as $namespace => $path) {
                $loader->set($namespace, $path);
            }

$map = require __DIR__ . '/autoload_psr4.php';
            foreach ($map as $namespace => $path) {
                $loader->setPsr4($namespace, $path);
            }

PSR04;
        }

if ($useClassMap) {
            $file .= <<<'CLASSMAP'
            $classMap = require __DIR__ . '/autoload_classmap.php';
            if ($classMap) {
                $loader->addClassMap($classMap);
            }

CLASSMAP;
        }

$file .= "        }\n\n";

if ($this->classMapAuthoritative) {
            $file .= <<<'CLASSMAPAUTHORITATIVE'
        $loader->setClassMapAuthoritative(true);

CLASSMAPAUTHORITATIVE;
        }

if ($this->apcu) {
            $apcuPrefix = var_export(($this->apcuPrefix !== null ? $this->apcuPrefix : substr(base64_encode(md5(uniqid('', true), true)), 0, -3)), true);
            $file .= <<<APCU
        \$loader->setApcuPrefix($apcuPrefix);

APCU;
        }

if ($useGlobalIncludePath) {
            $file .= <<<'INCLUDEPATH'
        $loader->setUseIncludePath(true);

INCLUDEPATH;
        }

if ($targetDirLoader) {
            $file .= <<<REGISTER_TARGET_DIR_AUTOLOAD
        spl_autoload_register(array('ComposerAutoloaderInit$suffix', 'autoload'), true, true);

REGISTER_TARGET_DIR_AUTOLOAD;
        }

$file .= <<<REGISTER_LOADER
        \$loader->register($prependAutoloader);

REGISTER_LOADER;

if ($useIncludeFiles) {
            $file .= <<<INCLUDE_FILES
        if (\$useStaticLoader) {
            \$includeFiles = Composer\Autoload\ComposerStaticInit$suffix::\$files;
        } else {
            \$includeFiles = require __DIR__ . '/autoload_files.php';
        }
        foreach (\$includeFiles as \$fileIdentifier => \$file) {
            composerRequire$suffix(\$fileIdentifier, \$file);
        }

INCLUDE_FILES;
        }

$file .= <<<METHOD_FOOTER
        return \$loader;
    }

METHOD_FOOTER;

$file .= $targetDirLoader;

if ($useIncludeFiles) {
            return $file . <<<FOOTER
}

/**
 * @param string \$fileIdentifier
 * @param string \$file
 * @return void
 */
function composerRequire$suffix(\$fileIdentifier, \$file)
{
    if (empty(\$GLOBALS['__composer_autoload_files'][\$fileIdentifier])) {
        \$GLOBALS['__composer_autoload_files'][\$fileIdentifier] = true;

require \$file;
    }
}

FOOTER;
        }

return $file . <<<FOOTER
}

FOOTER;
    }

/**
     * @param string $suffix
     * @param string $targetDir
     * @param string $vendorPath input for findShortestPathCode
     * @param string $basePath input for findShortestPathCode
     * @param string $staticPhpVersion
     * @return string
     */
    protected function getStaticFile($suffix, $targetDir, $vendorPath, $basePath, &$staticPhpVersion)
    {
        $staticPhpVersion = 50600;

$file = <<<HEADER
<?php

// autoload_static.php @generated by Composer

namespace Composer\Autoload;

class ComposerStaticInit$suffix
{

HEADER;

$loader = new ClassLoader();

$map = require $targetDir . '/autoload_namespaces.php';
        foreach ($map as $namespace => $path) {
            $loader->set($namespace, $path);
        }

$map = require $targetDir . '/autoload_psr4.php';
        foreach ($map as $namespace => $path) {
            $loader->setPsr4($namespace, $path);
        }

$classMap = require $targetDir . '/autoload_classmap.php';
        if ($classMap) {
            $loader->addClassMap($classMap);
        }

$filesystem = new Filesystem();

$vendorPathCode = ' => ' . $filesystem->findShortestPathCode(realpath($targetDir), $vendorPath, true, true) . " . '/";
        $vendorPharPathCode = ' => \'phar://\' . ' . $filesystem->findShortestPathCode(realpath($targetDir), $vendorPath, true, true) . " . '/";
        $appBaseDirCode = ' => ' . $filesystem->findShortestPathCode(realpath($targetDir), $basePath, true, true) . " . '/";
        $appBaseDirPharCode = ' => \'phar://\' . ' . $filesystem->findShortestPathCode(realpath($targetDir), $basePath, true, true) . " . '/";

$absoluteVendorPathCode = ' => ' . substr(var_export(rtrim($vendorDir, '\\/') . '/', true), 0, -1);
        $absoluteVendorPharPathCode = ' => ' . substr(var_export(rtrim('phar://' . $vendorDir, '\\/') . '/', true), 0, -1);
        $absoluteAppBaseDirCode = ' => ' . substr(var_export(rtrim($baseDir, '\\/') . '/', true), 0, -1);
        $absoluteAppBaseDirPharCode = ' => ' . substr(var_export(rtrim('phar://' . $baseDir, '\\/') . '/', true), 0, -1);

$initializer = '';
        $prefix = "\0Composer\Autoload\ClassLoader\0";
        $prefixLen = strlen($prefix);
        if (file_exists($targetDir . '/autoload_files.php')) {
            $maps = array('files' => require $targetDir . '/autoload_files.php');
        } else {
            $maps = array();
        }

foreach ((array) $loader as $prop => $value) {
            if ($value && 0 === strpos($prop, $prefix)) {
                $maps[substr($prop, $prefixLen)] = $value;
            }
        }

foreach ($maps as $prop => $value) {
            if (count($value) > 32767) {
                // Static arrays are limited to 32767 values on PHP 5.6
                // See https://bugs.php.net/68057
                $staticPhpVersion = 70000;
            }
            $value = strtr(
                var_export($value, true),
                array(
                    $absoluteVendorPathCode => $vendorPathCode,
                    $absoluteVendorPharPathCode => $vendorPharPathCode,
                    $absoluteAppBaseDirCode => $appBaseDirCode,
                    $absoluteAppBaseDirPharCode => $appBaseDirPharCode,
                )
            );
            $value = ltrim(Preg::replace('/^ */m', '    $0$0', $value));

$file .= sprintf("    public static $%s = %s;\n\n", $prop, $value);
            if ('files' !== $prop) {
                $initializer .= "            \$loader->$prop = ComposerStaticInit$suffix::\$$prop;\n";
            }
        }

return $file . <<<INITIALIZER
    public static function getInitializer(ClassLoader \$loader)
    {
        return \Closure::bind(function () use (\$loader) {
$initializer
        }, null, ClassLoader::class);
    }
}

INITIALIZER;
    }

/**
     * @param array<int, array{0: PackageInterface, 1: string}> $packageMap
     * @param string $type one of: 'psr-0'|'psr-4'|'classmap'|'files'
     * @return array<int, string>|array<string, array<string>>|array<string, string>
     */
    protected function parseAutoloadsType(array $packageMap, $type, RootPackageInterface $rootPackage)
    {
        $autoloads = array();

foreach ($packageMap as $item) {
            list($package, $installPath) = $item;

$autoload = $package->getAutoload();
            if ($this->devMode && $package === $rootPackage) {
                $autoload = array_merge_recursive($autoload, $package->getDevAutoload());
            }

// skip misconfigured packages
            if (!isset($autoload[$type]) || !is_array($autoload[$type])) {
                continue;
            }
            if (null !== $package->getTargetDir() && $package !== $rootPackage) {
                $installPath = substr($installPath, 0, -strlen('/'.$package->getTargetDir()));
            }

foreach ($autoload[$type] as $namespace => $paths) {
                foreach ((array) $paths as $path) {
                    if (($type === 'files' || $type === 'classmap' || $type === 'exclude-from-classmap') && $package->getTargetDir() && !Filesystem::isReadable($installPath.'/'.$path)) {
                        // remove target-dir from file paths of the root package
                        if ($package === $rootPackage) {
                            $targetDir = str_replace('\\<dirsep\\>', '[\\\\/]', preg_quote(str_replace(array('/', '\\'), '<dirsep>', $package->getTargetDir())));
                            $path = ltrim(Preg::replace('{^'.$targetDir.'}', '', ltrim($path, '\\/')), '\\/');
                        } else {
                            // add target-dir from file paths that don't have it
                            $path = $package->getTargetDir() . '/' . $path;
                        }
                    }

if ($type === 'exclude-from-classmap') {
                        // first escape user input
                        $path = Preg::replace('{/+}', '/', preg_quote(trim(strtr($path, '\\', '/'), '/')));

// add support for wildcards * and **
                        $path = strtr($path, array('\\*\\*' => '.+?', '\\*' => '[^/]+?'));

// add support for up-level relative paths
                        $updir = null;
                        $path = Preg::replaceCallback(
                            '{^((?:(?:\\\\\\.){1,2}+/)+)}',
                            function ($matches) use (&$updir) {
                                if (isset($matches[1])) {
                                    // undo preg_quote for the matched string
                                    $updir = str_replace('\\.', '.', $matches[1]);
                                }

return '';
                            },
                            $path
                        );
                        if (empty($installPath)) {
                            $installPath = strtr(getcwd(), '\\', '/');
                        }

$resolvedPath = realpath($installPath . '/' . $updir);
                        $autoloads[] = preg_quote(strtr($resolvedPath, '\\', '/')) . '/' . $path . '($|/)';
                        continue;
                    }

$relativePath = empty($installPath) ? (empty($path) ? '.' : $path) : $installPath.'/'.$path;

if ($type === 'files') {
                        $autoloads[$this->getFileIdentifier($package, $path)] = $relativePath;
                        continue;
                    }
                    if ($type === 'classmap') {
                        $autoloads[] = $relativePath;
                        continue;
                    }

$autoloads[$namespace][] = $relativePath;
                }
            }
        }

return $autoloads;
    }

/**
     * @param string $path
     * @return string
     */
    protected function getFileIdentifier(PackageInterface $package, $path)
    {
        return md5($package->getName() . ':' . $path);
    }

/**
     * Filters out dev-dependencies
     *
     * @param array<int, array{0: PackageInterface, 1: string}> $packageMap
     * @param  RootPackageInterface $rootPackage
     * @return array<int, array{0: PackageInterface, 1: string}>
     *
     * @phpstan-param array<int, array{0: PackageInterface, 1: string}> $packageMap
     */
    protected function filterPackageMap(array $packageMap, RootPackageInterface $rootPackage)
    {
        $packages = array();
        $include = array();
        $replacedBy = array();

foreach ($packageMap as $item) {
            $package = $item[0];
            $name = $package->getName();
            $packages[$name] = $package;
            foreach ($package->getReplaces() as $replace) {
                $replacedBy[$replace->getTarget()] = $name;
            }
        }

$add = function (PackageInterface $package) use (&$add, $packages, &$include, $replacedBy) {
            foreach ($package->getRequires() as $link) {
                $target = $link->getTarget();
                if (isset($replacedBy[$target])) {
                    $target = $replacedBy[$target];
                }
                if (!isset($include[$target])) {
                    $include[$target] = true;
                    if (isset($packages[$target])) {
                        $add($packages[$target]);
                    }
                }
            }
        };
        $add($rootPackage);

return array_filter(
            $packageMap,
            function ($item) use ($include) {
                $package = $item[0];
                foreach ($package->getNames() as $name) {
                    if (isset($include[$name])) {
                        return true;
                    }
                }

return false;
            }
        );
    }

/**
     * Sorts packages by dependency weight
     *
     * Packages of equal weight retain the original order
     *
     * @param array<int, array{0: PackageInterface, 1: string}> $packageMap
     * @return array<int, array{0: PackageInterface, 1: string}>
     */
    protected function sortPackageMap(array $packageMap)
    {
        $packages = array();
        $paths = array();

foreach ($packageMap as $item) {
            list($package, $path) = $item;
            $name = $package->getName();
            $packages[$name] = $package;
            $paths[$name] = $path;
        }

$sortedPackages = PackageSorter::sortPackages($packages);

$sortedPackageMap = array();

foreach ($sortedPackages as $package) {
            $name = $package->getName();
            $sortedPackageMap[] = array($packages[$name], $paths[$name]);
        }

return $sortedPackageMap;
    }
}

/**
 * @param string $fileIdentifier
 * @param string $file
 * @return void
 */
function composerRequire($fileIdentifier, $file)
{
    if (empty($GLOBALS['__composer_autoload_files'][$fileIdentifier])) {
        $GLOBALS['__composer_autoload_files'][$fileIdentifier] = true;

require $file;
    }
}
<?php

/*
 * This file is copied from the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 */

namespace Composer\Autoload;

use Composer\Pcre\Preg;
use Symfony\Component\Finder\Finder;
use Composer\IO\IOInterface;
use Composer\Util\Filesystem;

/**
 * ClassMapGenerator
 *
 * @author Gyula Sallai <salla016@gmail.com>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class ClassMapGenerator
{
    /**
     * Generate a class map file
     *
     * @param \Traversable<string>|array<string> $dirs Directories or a single path to search in
     * @param string                     $file The name of the class map file
     * @return void
     */
    public static function dump($dirs, $file)
    {
        $maps = array();

foreach ($dirs as $dir) {
            $maps = array_merge($maps, static::createMap($dir));
        }

file_put_contents($file, sprintf('<?php return %s;', var_export($maps, true)));
    }

/**
     * Iterate over all files in the given directory searching for classes
     *
     * @param \Traversable<\SplFileInfo>|string|array<string> $path The path to search in or an iterator
     * @param string              $excluded     Regex that matches file paths to be excluded from the classmap
     * @param ?IOInterface        $io           IO object
     * @param ?string             $namespace    Optional namespace prefix to filter by
     * @param ?string             $autoloadType psr-0|psr-4 Optional autoload standard to use mapping rules
     * @param array<string, true> $scannedFiles
     * @return array<class-string, string> A class map array
     * @throws \RuntimeException When the path is neither an existing file nor directory
     */
    public static function createMap($path, $excluded = null, IOInterface $io = null, $namespace = null, $autoloadType = null, &$scannedFiles = array())
    {
        $basePath = $path;
        if (is_string($path)) {
            if (is_file($path)) {
                $path = array(new \SplFileInfo($path));
            } elseif (is_dir($path) || strpos($path, '*') !== false) {
                $path = Finder::create()->files()->followLinks()->name('/\.(php|inc|hh)$/')->in($path);
            } else {
                throw new \RuntimeException(
                    'Could not scan for classes inside "'.$path.
                    '" which does not appear to be a file nor a folder'
                );
            }
        } elseif (null !== $autoloadType) {
            throw new \RuntimeException('Path must be a string when specifying an autoload type');
        }

$map = array();
        $filesystem = new Filesystem();
        $cwd = realpath(getcwd());

foreach ($path as $file) {
            $filePath = $file->getPathname();
            if (!in_array(pathinfo($filePath, PATHINFO_EXTENSION), array('php', 'inc', 'hh'))) {
                continue;
            }

if (!$filesystem->isAbsolutePath($filePath)) {
                $filePath = $cwd . '/' . $filePath;
                $filePath = $filesystem->normalizePath($filePath);
            } else {
                $filePath = Preg::replace('{[\\\\/]{2,}}', '/', $filePath);
            }

$realPath = realpath($filePath);

// if a list of scanned files is given, avoid scanning twice the same file to save cycles and avoid generating warnings
            // in case a PSR-0/4 declaration follows another more specific one, or a classmap declaration, which covered this file already
            if (isset($scannedFiles[$realPath])) {
                continue;
            }

// check the realpath of the file against the excluded paths as the path might be a symlink and the excluded path is realpath'd so symlink are resolved
            if ($excluded && Preg::isMatch($excluded, strtr($realPath, '\\', '/'))) {
                continue;
            }
            // check non-realpath of file for directories symlink in project dir
            if ($excluded && Preg::isMatch($excluded, strtr($filePath, '\\', '/'))) {
                continue;
            }

$classes = self::findClasses($filePath);
            if (null !== $autoloadType) {
                $classes = self::filterByNamespace($classes, $filePath, $namespace, $autoloadType, $basePath, $io);

// if no valid class was found in the file then we do not mark it as scanned as it might still be matched by another rule later
                if ($classes) {
                    $scannedFiles[$realPath] = true;
                }
            } else {
                // classmap autoload rules always collect all classes so for these we definitely do not want to scan again
                $scannedFiles[$realPath] = true;
            }

foreach ($classes as $class) {
                // skip classes not within the given namespace prefix
                if (null === $autoloadType && null !== $namespace && '' !== $namespace && 0 !== strpos($class, $namespace)) {
                    continue;
                }

if (!isset($map[$class])) {
                    $map[$class] = $filePath;
                } elseif ($io && $map[$class] !== $filePath && !Preg::isMatch('{/(test|fixture|example|stub)s?/}i', strtr($map[$class].' '.$filePath, '\\', '/'))) {
                    $io->writeError(
                        '<warning>Warning: Ambiguous class resolution, "'.$class.'"'.
                        ' was found in both "'.$map[$class].'" and "'.$filePath.'", the first will be used.</warning>'
                    );
                }
            }
        }

return $map;
    }

/**
     * Remove classes which could not have been loaded by namespace autoloaders
     *
     * @param  array<int, class-string> $classes       found classes in given file
     * @param  string                   $filePath      current file
     * @param  string                   $baseNamespace prefix of given autoload mapping
     * @param  string                   $namespaceType psr-0|psr-4
     * @param  string                   $basePath      root directory of given autoload mapping
     * @param  ?IOInterface             $io            IO object
     * @return array<int, class-string> valid classes
     */
    private static function filterByNamespace($classes, $filePath, $baseNamespace, $namespaceType, $basePath, $io)
    {
        $validClasses = array();
        $rejectedClasses = array();

$realSubPath = substr($filePath, strlen($basePath) + 1);
        $realSubPath = substr($realSubPath, 0, strrpos($realSubPath, '.'));

foreach ($classes as $class) {
            // silently skip if ns doesn't have common root
            if ('' !== $baseNamespace && 0 !== strpos($class, $baseNamespace)) {
                continue;
            }
            // transform class name to file path and validate
            if ('psr-0' === $namespaceType) {
                $namespaceLength = strrpos($class, '\\');
                if (false !== $namespaceLength) {
                    $namespace = substr($class, 0, $namespaceLength + 1);
                    $className = substr($class, $namespaceLength + 1);
                    $subPath = str_replace('\\', DIRECTORY_SEPARATOR, $namespace)
                        . str_replace('_', DIRECTORY_SEPARATOR, $className);
                } else {
                    $subPath = str_replace('_', DIRECTORY_SEPARATOR, $class);
                }
            } elseif ('psr-4' === $namespaceType) {
                $subNamespace = ('' !== $baseNamespace) ? substr($class, strlen($baseNamespace)) : $class;
                $subPath = str_replace('\\', DIRECTORY_SEPARATOR, $subNamespace);
            } else {
                throw new \RuntimeException("namespaceType must be psr-0 or psr-4, $namespaceType given");
            }
            if ($subPath === $realSubPath) {
                $validClasses[] = $class;
            } else {
                $rejectedClasses[] = $class;
            }
        }
        // warn only if no valid classes, else silently skip invalid
        if (empty($validClasses)) {
            foreach ($rejectedClasses as $class) {
                if ($io) {
                    $io->writeError("<warning>Class $class located in ".Preg::replace('{^'.preg_quote(getcwd()).'}', '.', $filePath, 1)." does not comply with $namespaceType autoloading standard. Skipping.</warning>");
                }
            }

return array();
        }

return $validClasses;
    }

/**
     * Extract the classes in the given file
     *
     * @param  string            $path The file to check
     * @throws \RuntimeException
     * @return array<int, class-string> The found classes
     */
    private static function findClasses($path)
    {
        $extraTypes = self::getExtraTypes();

// Use @ here instead of Silencer to actively suppress 'unhelpful' output
        // @link https://github.com/composer/composer/pull/4886
        $contents = @php_strip_whitespace($path);
        if (!$contents) {
            if (!file_exists($path)) {
                $message = 'File at "%s" does not exist, check your classmap definitions';
            } elseif (!Filesystem::isReadable($path)) {
                $message = 'File at "%s" is not readable, check its permissions';
            } elseif ('' === trim(file_get_contents($path))) {
                // The input file was really empty and thus contains no classes
                return array();
            } else {
                $message = 'File at "%s" could not be parsed as PHP, it may be binary or corrupted';
            }
            $error = error_get_last();
            if (isset($error['message'])) {
                $message .= PHP_EOL . 'The following message may be helpful:' . PHP_EOL . $error['message'];
            }
            throw new \RuntimeException(sprintf($message, $path));
        }

// return early if there is no chance of matching anything in this file
        Preg::matchAll('{\b(?:class|interface'.$extraTypes.')\s}i', $contents, $matches);
        if (!$matches) {
            return array();
        }

$p = new PhpFileCleaner($contents, count($matches[0]));
        $contents = $p->clean();
        unset($p);

Preg::matchAll('{
            (?:
                 \b(?<![\$:>])(?P<type>class|interface'.$extraTypes.') \s++ (?P<name>[a-zA-Z_\x7f-\xff:][a-zA-Z0-9_\x7f-\xff:\-]*+)
               | \b(?<![\$:>])(?P<ns>namespace) (?P<nsname>\s++[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*+(?:\s*+\\\\\s*+[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*+)*+)? \s*+ [\{;]
            )
        }ix', $contents, $matches);

$classes = array();
        $namespace = '';

for ($i = 0, $len = count($matches['type']); $i < $len; $i++) {
            if (!empty($matches['ns'][$i])) {
                $namespace = str_replace(array(' ', "\t", "\r", "\n"), '', $matches['nsname'][$i]) . '\\';
            } else {
                $name = $matches['name'][$i];
                // skip anon classes extending/implementing
                if ($name === 'extends' || $name === 'implements') {
                    continue;
                }
                if ($name[0] === ':') {
                    // This is an XHP class, https://github.com/facebook/xhp
                    $name = 'xhp'.substr(str_replace(array('-', ':'), array('_', '__'), $name), 1);
                } elseif ($matches['type'][$i] === 'enum') {
                    // In Hack, something like:
                    //   enum Foo: int { HERP = '123'; }
                    // The regex above captures the colon, which isn't part of
                    // the class name.
                    $name = rtrim($name, ':');
                }
                $classes[] = ltrim($namespace . $name, '\\');
            }
        }

return $classes;
    }

/**
     * @return string
     */
    private static function getExtraTypes()
    {
        static $extraTypes = null;
        if (null === $extraTypes) {
            $extraTypes = PHP_VERSION_ID < 50400 ? '' : '|trait';
            if (PHP_VERSION_ID >= 80100 || (defined('HHVM_VERSION') && version_compare(HHVM_VERSION, '3.3', '>='))) {
                $extraTypes .= '|enum';
            }
            PhpFileCleaner::setTypeConfig(array_merge(array('class', 'interface'), array_filter(explode('|', $extraTypes))));
        }

return $extraTypes;
    }
}
<?php

namespace Composer\Config;

/**
 * Configuration Source Interface
 *
 * @author Jordi Boggiano <j.boggiano@seld.be>
 * @author Beau Simensen <beau@dflydev.com>
 */
interface ConfigSourceInterface
{
    /**
     * Add a repository
     *
     * @param string        $name   Name
     * @param mixed[]|false $config Configuration
     * @param bool          $append Whether the repo should be appended (true) or prepended (false)
     *
     * @return void
     */
    public function addRepository($name, $config, $append = true);

/**
     * Remove a repository
     *
     * @param string $name
     *
     * @return void
     */
    public function removeRepository($name);

/**
     * Add a config setting
     *
     * @param string $name  Name
     * @param mixed  $value Value
     *
     * @return void
     */
    public function addConfigSetting($name, $value);

/**
     * Remove a config setting
     *
     * @param string $name
     *
     * @return void
     */
    public function removeConfigSetting($name);

/**
     * Add a property
     *
     * @param string $name  Name
     * @param string $value Value
     *
     * @return void
     */
    public function addProperty($name, $value);

/**
     * Remove a property
     *
     * @param string $name
     *
     * @return void
     */
    public function removeProperty($name);

/**
     * Add a package link
     *
     * @param string $type  Type (require, require-dev, provide, suggest, replace, conflict)
     * @param string $name  Name
     * @param string $value Value
     *
     * @return void
     */
    public function addLink($type, $name, $value);

/**
     * Remove a package link
     *
     * @param string $type Type (require, require-dev, provide, suggest, replace, conflict)
     * @param string $name Name
     *
     * @return void
     */
    public function removeLink($type, $name);

/**
     * Gives a user-friendly name to this source (file path or so)
     *
     * @return string
     */
    public function getName();
}
<?php

namespace Composer\Config;

use Composer\Json\JsonFile;
use Composer\Json\JsonManipulator;
use Composer\Json\JsonValidationException;
use Composer\Pcre\Preg;
use Composer\Util\Filesystem;
use Composer\Util\Silencer;

/**
 * JSON Configuration Source
 *
 * @author Jordi Boggiano <j.boggiano@seld.be>
 * @author Beau Simensen <beau@dflydev.com>
 */
class JsonConfigSource implements ConfigSourceInterface
{
    /**
     * @var JsonFile
     */
    private $file;

/**
     * @var bool
     */
    private $authConfig;

/**
     * Constructor
     *
     * @param JsonFile $file
     * @param bool     $authConfig
     */
    public function __construct(JsonFile $file, $authConfig = false)
    {
        $this->file = $file;
        $this->authConfig = $authConfig;
    }

/**
     * @inheritDoc
     */
    public function getName()
    {
        return $this->file->getPath();
    }

/**
     * @inheritDoc
     */
    public function addRepository($name, $config, $append = true)
    {
        $this->manipulateJson('addRepository', $name, $config, $append, function (&$config, $repo, $repoConfig) use ($append) {
            // if converting from an array format to hashmap format, and there is a {"packagist.org":false} repo, we have
            // to convert it to "packagist.org": false key on the hashmap otherwise it fails schema validation
            if (isset($config['repositories'])) {
                foreach ($config['repositories'] as $index => $val) {
                    if ($index === $repo) {
                        continue;
                    }
                    if (is_numeric($index) && ($val === array('packagist' => false) || $val === array('packagist.org' => false))) {
                        unset($config['repositories'][$index]);
                        $config['repositories']['packagist.org'] = false;
                        break;
                    }
                }
            }

if ($append) {
                $config['repositories'][$repo] = $repoConfig;
            } else {
                $config['repositories'] = array($repo => $repoConfig) + $config['repositories'];
            }
        });
    }

/**
     * @inheritDoc
     */
    public function removeRepository($name)
    {
        $this->manipulateJson('removeRepository', $name, function (&$config, $repo) {
            unset($config['repositories'][$repo]);
        });
    }

/**
     * @inheritDoc
     */
    public function addConfigSetting($name, $value)
    {
        $authConfig = $this->authConfig;
        $this->manipulateJson('addConfigSetting', $name, $value, function (&$config, $key, $val) use ($authConfig) {
            if (Preg::isMatch('{^(bitbucket-oauth|github-oauth|gitlab-oauth|gitlab-token|bearer|http-basic|platform)\.}', $key)) {
                list($key, $host) = explode('.', $key, 2);
                if ($authConfig) {
                    $config[$key][$host] = $val;
                } else {
                    $config['config'][$key][$host] = $val;
                }
            } else {
                $config['config'][$key] = $val;
            }
        });
    }

/**
     * @inheritDoc
     */
    public function removeConfigSetting($name)
    {
        $authConfig = $this->authConfig;
        $this->manipulateJson('removeConfigSetting', $name, function (&$config, $key) use ($authConfig) {
            if (Preg::isMatch('{^(bitbucket-oauth|github-oauth|gitlab-oauth|gitlab-token|bearer|http-basic|platform)\.}', $key)) {
                list($key, $host) = explode('.', $key, 2);
                if ($authConfig) {
                    unset($config[$key][$host]);
                } else {
                    unset($config['config'][$key][$host]);
                }
            } else {
                unset($config['config'][$key]);
            }
        });
    }

/**
     * @inheritDoc
     */
    public function addProperty($name, $value)
    {
        $this->manipulateJson('addProperty', $name, $value, function (&$config, $key, $val) {
            if (strpos($key, 'extra.') === 0 || strpos($key, 'scripts.') === 0) {
                $bits = explode('.', $key);
                $last = array_pop($bits);
                $arr = &$config[reset($bits)];
                foreach ($bits as $bit) {
                    if (!isset($arr[$bit])) {
                        $arr[$bit] = array();
                    }
                    $arr = &$arr[$bit];
                }
                $arr[$last] = $val;
            } else {
                $config[$key] = $val;
            }
        });
    }

/**
     * @inheritDoc
     */
    public function removeProperty($name)
    {
        $this->manipulateJson('removeProperty', $name, function (&$config, $key) {
            if (strpos($key, 'extra.') === 0 || strpos($key, 'scripts.') === 0) {
                $bits = explode('.', $key);
                $last = array_pop($bits);
                $arr = &$config[reset($bits)];
                foreach ($bits as $bit) {
                    if (!isset($arr[$bit])) {
                        return;
                    }
                    $arr = &$arr[$bit];
                }
                unset($arr[$last]);
            } else {
                unset($config[$key]);
            }
        });
    }

/**
     * @inheritDoc
     */
    public function addLink($type, $name, $value)
    {
        $this->manipulateJson('addLink', $type, $name, $value, function (&$config, $type, $name, $value) {
            $config[$type][$name] = $value;
        });
    }

/**
     * @inheritDoc
     */
    public function removeLink($type, $name)
    {
        $this->manipulateJson('removeSubNode', $type, $name, function (&$config, $type, $name) {
            unset($config[$type][$name]);
        });
        $this->manipulateJson('removeMainKeyIfEmpty', $type, function (&$config, $type) {
            if (0 === count($config[$type])) {
                unset($config[$type]);
            }
        });
    }

/**
     * @param string $method
     * @param mixed ...$args
     * @param callable $fallback
     *
     * @return void
     */
    protected function manipulateJson($method, $args, $fallback)
    {
        $args = func_get_args();
        // remove method & fallback
        array_shift($args);
        $fallback = array_pop($args);

if ($this->file->exists()) {
            if (!is_writable($this->file->getPath())) {
                throw new \RuntimeException(sprintf('The file "%s" is not writable.', $this->file->getPath()));
            }

if (!Filesystem::isReadable($this->file->getPath())) {
                throw new \RuntimeException(sprintf('The file "%s" is not readable.', $this->file->getPath()));
            }

$contents = file_get_contents($this->file->getPath());
        } elseif ($this->authConfig) {
            $contents = "{\n}\n";
        } else {
            $contents = "{\n    \"config\": {\n    }\n}\n";
        }

$manipulator = new JsonManipulator($contents);

$newFile = !$this->file->exists();

// override manipulator method for auth config files
        if ($this->authConfig && $method === 'addConfigSetting') {
            $method = 'addSubNode';
            list($mainNode, $name) = explode('.', $args[0], 2);
            $args = array($mainNode, $name, $args[1]);
        } elseif ($this->authConfig && $method === 'removeConfigSetting') {
            $method = 'removeSubNode';
            list($mainNode, $name) = explode('.', $args[0], 2);
            $args = array($mainNode, $name);
        }

// try to update cleanly
        if (call_user_func_array(array($manipulator, $method), $args)) {
            file_put_contents($this->file->getPath(), $manipulator->getContents());
        } else {
            // on failed clean update, call the fallback and rewrite the whole file
            $config = $this->file->read();
            $this->arrayUnshiftRef($args, $config);
            call_user_func_array($fallback, $args);
            // avoid ending up with arrays for keys that should be objects
            foreach (array('require', 'require-dev', 'conflict', 'provide', 'replace', 'suggest', 'config', 'autoload', 'autoload-dev', 'scripts', 'scripts-descriptions', 'support') as $prop) {
                if (isset($config[$prop]) && $config[$prop] === array()) {
                    $config[$prop] = new \stdClass;
                }
            }
            foreach (array('psr-0', 'psr-4') as $prop) {
                if (isset($config['autoload'][$prop]) && $config['autoload'][$prop] === array()) {
                    $config['autoload'][$prop] = new \stdClass;
                }
                if (isset($config['autoload-dev'][$prop]) && $config['autoload-dev'][$prop] === array()) {
                    $config['autoload-dev'][$prop] = new \stdClass;
                }
            }
            foreach (array('platform', 'http-basic', 'bearer', 'gitlab-token', 'gitlab-oauth', 'github-oauth', 'preferred-install') as $prop) {
                if (isset($config['config'][$prop]) && $config['config'][$prop] === array()) {
                    $config['config'][$prop] = new \stdClass;
                }
            }
            $this->file->write($config);
        }

try {
            $this->file->validateSchema(JsonFile::LAX_SCHEMA);
        } catch (JsonValidationException $e) {
            // restore contents to the original state
            file_put_contents($this->file->getPath(), $contents);
            throw new \RuntimeException('Failed to update composer.json with a valid format, reverting to the original content. Please report an issue to us with details (command you run and a copy of your composer.json). '.PHP_EOL.implode(PHP_EOL, $e->getErrors()), 0, $e);
        }

if ($newFile) {
            Silencer::call('chmod', $this->file->getPath(), 0600);
        }
    }

/**
     * Prepend a reference to an element to the beginning of an array.
     *
     * @param  mixed[] $array
     * @param  mixed $value
     * @return int
     */
    private function arrayUnshiftRef(&$array, &$value)
    {
        $return = array_unshift($array, '');
        $array[0] = &$value;

return $return;
    }
}
<?php

namespace Composer\Downloader;

use Composer\Package\Archiver\ArchivableFilesFinder;
use Composer\Package\Dumper\ArrayDumper;
use Composer\Package\PackageInterface;
use Composer\Package\Version\VersionGuesser;
use Composer\Package\Version\VersionParser;
use Composer\Util\Platform;
use Composer\Util\Filesystem;
use Symfony\Component\Filesystem\Exception\IOException;
use Symfony\Component\Filesystem\Filesystem as SymfonyFilesystem;
use Composer\DependencyResolver\Operation\InstallOperation;
use Composer\DependencyResolver\Operation\UninstallOperation;

/**
 * Download a package from a local path.
 *
 * @author Samuel Roze <samuel.roze@gmail.com>
 * @author Johann Reinke <johann.reinke@gmail.com>
 */
class PathDownloader extends FileDownloader implements VcsCapableDownloaderInterface
{
    const STRATEGY_SYMLINK = 10;
    const STRATEGY_MIRROR = 20;

/**
     * @inheritDoc
     */
    public function download(PackageInterface $package, $path, PackageInterface $prevPackage = null, $output = true)
    {
        $path = Filesystem::trimTrailingSlash($path);
        $url = $package->getDistUrl();
        $realUrl = realpath($url);
        if (false === $realUrl || !file_exists($realUrl) || !is_dir($realUrl)) {
            throw new \RuntimeException(sprintf(
                'Source path "%s" is not found for package %s',
                $url,
                $package->getName()
            ));
        }

if (realpath($path) === $realUrl) {
            return \React\Promise\resolve();
        }

if (strpos(realpath($path) . DIRECTORY_SEPARATOR, $realUrl . DIRECTORY_SEPARATOR) === 0) {
            // IMPORTANT NOTICE: If you wish to change this, don't. You are wasting your time and ours.
            //
            // Please see https://github.com/composer/composer/pull/5974 and https://github.com/composer/composer/pull/6174
            // for previous attempts that were shut down because they did not work well enough or introduced too many risks.
            throw new \RuntimeException(sprintf(
                'Package %s cannot install to "%s" inside its source at "%s"',
                $package->getName(),
                realpath($path),
                $realUrl
            ));
        }

return \React\Promise\resolve();
    }

/**
     * @inheritDoc
     */
    public function install(PackageInterface $package, $path, $output = true)
    {
        $path = Filesystem::trimTrailingSlash($path);
        $url = $package->getDistUrl();
        $realUrl = realpath($url);

if (realpath($path) === $realUrl) {
            if ($output) {
                $this->io->writeError("  - " . InstallOperation::format($package) . $this->getInstallOperationAppendix($package, $path));
            }

return \React\Promise\resolve();
        }

// Get the transport options with default values
        $transportOptions = $package->getTransportOptions() + array('relative' => true);

list($currentStrategy, $allowedStrategies) = $this->computeAllowedStrategies($transportOptions);

$symfonyFilesystem = new SymfonyFilesystem();
        $this->filesystem->removeDirectory($path);

if ($output) {
            $this->io->writeError("  - " . InstallOperation::format($package).': ', false);
        }

$isFallback = false;
        if (self::STRATEGY_SYMLINK === $currentStrategy) {
            try {
                if (Platform::isWindows()) {
                    // Implement symlinks as NTFS junctions on Windows
                    if ($output) {
                        $this->io->writeError(sprintf('Junctioning from %s', $url), false);
                    }
                    $this->filesystem->junction($realUrl, $path);
                } else {
                    $absolutePath = $path;
                    if (!$this->filesystem->isAbsolutePath($absolutePath)) {
                        $absolutePath = getcwd() . DIRECTORY_SEPARATOR . $path;
                    }
                    $shortestPath = $this->filesystem->findShortestPath($absolutePath, $realUrl);
                    $path = rtrim($path, "/");
                    if ($output) {
                        $this->io->writeError(sprintf('Symlinking from %s', $url), false);
                    }
                    if ($transportOptions['relative']) {
                        $symfonyFilesystem->symlink($shortestPath, $path);
                    } else {
                        $symfonyFilesystem->symlink($realUrl, $path);
                    }
                }
            } catch (IOException $e) {
                if (in_array(self::STRATEGY_MIRROR, $allowedStrategies)) {
                    if ($output) {
                        $this->io->writeError('');
                        $this->io->writeError('    <error>Symlink failed, fallback to use mirroring!</error>');
                    }
                    $currentStrategy = self::STRATEGY_MIRROR;
                    $isFallback = true;
                } else {
                    throw new \RuntimeException(sprintf('Symlink from "%s" to "%s" failed!', $realUrl, $path));
                }
            }
        }

// Fallback if symlink failed or if symlink is not allowed for the package
        if (self::STRATEGY_MIRROR === $currentStrategy) {
            $realUrl = $this->filesystem->normalizePath($realUrl);

if ($output) {
                $this->io->writeError(sprintf('%sMirroring from %s', $isFallback ? '    ' : '', $url), false);
            }
            $iterator = new ArchivableFilesFinder($realUrl, array());
            $symfonyFilesystem->mirror($realUrl, $path, $iterator);
        }

if ($output) {
            $this->io->writeError('');
        }

return \React\Promise\resolve();
    }

/**
     * @inheritDoc
     */
    public function remove(PackageInterface $package, $path, $output = true)
    {
        $path = Filesystem::trimTrailingSlash($path);
        /**
         * realpath() may resolve Windows junctions to the source path, so we'll check for a junction first
         * to prevent a false positive when checking if the dist and install paths are the same.
         * See https://bugs.php.net/bug.php?id=77639
         *
         * For junctions don't blindly rely on Filesystem::removeDirectory as it may be overzealous. If a process
         * inadvertently locks the file the removal will fail, but it would fall back to recursive delete which
         * is disastrous within a junction. So in that case we have no other real choice but to fail hard.
         */
        if (Platform::isWindows() && $this->filesystem->isJunction($path)) {
            if ($output) {
                $this->io->writeError("  - " . UninstallOperation::format($package).", source is still present in $path");
            }
            if (!$this->filesystem->removeJunction($path)) {
                $this->io->writeError("    <warning>Could not remove junction at " . $path . " - is another process locking it?</warning>");
                throw new \RuntimeException('Could not reliably remove junction for package ' . $package->getName());
            }

return \React\Promise\resolve();
        }

// ensure that the source path (dist url) is not the same as the install path, which
        // can happen when using custom installers, see https://github.com/composer/composer/pull/9116
        // not using realpath here as we do not want to resolve the symlink to the original dist url
        // it points to
        $fs = new Filesystem;
        $absPath = $fs->isAbsolutePath($path) ? $path : getcwd() . '/' . $path;
        $absDistUrl = $fs->isAbsolutePath($package->getDistUrl()) ? $package->getDistUrl() : getcwd() . '/' . $package->getDistUrl();
        if ($fs->normalizePath($absPath) === $fs->normalizePath($absDistUrl)) {
            if ($output) {
                $this->io->writeError("  - " . UninstallOperation::format($package).", source is still present in $path");
            }

return \React\Promise\resolve();
        }

return parent::remove($package, $path, $output);
    }

/**
     * @inheritDoc
     */
    public function getVcsReference(PackageInterface $package, $path)
    {
        $path = Filesystem::trimTrailingSlash($path);
        $parser = new VersionParser;
        $guesser = new VersionGuesser($this->config, $this->process, $parser);
        $dumper = new ArrayDumper;

$packageConfig = $dumper->dump($package);
        if ($packageVersion = $guesser->guessVersion($packageConfig, $path)) {
            return $packageVersion['commit'];
        }

return null;
    }

/**
     * @inheritDoc
     */
    protected function getInstallOperationAppendix(PackageInterface $package, $path)
    {
        $realUrl = realpath($package->getDistUrl());

if (realpath($path) === $realUrl) {
            return ': Source already present';
        }

list($currentStrategy) = $this->computeAllowedStrategies($package->getTransportOptions());

if ($currentStrategy === self::STRATEGY_SYMLINK) {
            if (Platform::isWindows()) {
                return ': Junctioning from '.$package->getDistUrl();
            }

return ': Symlinking from '.$package->getDistUrl();
        }

return ': Mirroring from '.$package->getDistUrl();
    }

/**
     * @param mixed[] $transportOptions
     *
     * @phpstan-return array{self::STRATEGY_*, non-empty-list<self::STRATEGY_*>}
     */
    private function computeAllowedStrategies(array $transportOptions)
    {
        // When symlink transport option is null, both symlink and mirror are allowed
        $currentStrategy = self::STRATEGY_SYMLINK;
        $allowedStrategies = array(self::STRATEGY_SYMLINK, self::STRATEGY_MIRROR);

$mirrorPathRepos = Platform::getEnv('COMPOSER_MIRROR_PATH_REPOS');
        if ($mirrorPathRepos) {
            $currentStrategy = self::STRATEGY_MIRROR;
        }

$symlinkOption = isset($transportOptions['symlink']) ? $transportOptions['symlink'] : null;

if (true === $symlinkOption) {
            $currentStrategy = self::STRATEGY_SYMLINK;
            $allowedStrategies = array(self::STRATEGY_SYMLINK);
        } elseif (false === $symlinkOption) {
            $currentStrategy = self::STRATEGY_MIRROR;
            $allowedStrategies = array(self::STRATEGY_MIRROR);
        }

// Check we can use junctions safely if we are on Windows
        if (Platform::isWindows() && self::STRATEGY_SYMLINK === $currentStrategy && !$this->safeJunctions()) {
            $currentStrategy = self::STRATEGY_MIRROR;
            $allowedStrategies = array(self::STRATEGY_MIRROR);
        }

return array($currentStrategy, $allowedStrategies);
    }

/**
     * Returns true if junctions can be created and safely used on Windows
     *
     * A PHP bug makes junction detection fragile, leading to possible data loss
     * when removing a package. See https://bugs.php.net/bug.php?id=77552
     *
     * For safety we require a minimum version of Windows 7, so we can call the
     * system rmdir which will preserve target content if given a junction.
     *
     * The PHP bug was fixed in 7.2.16 and 7.3.3 (requires at least Windows 7).
     *
     * @return bool
     */
    private function safeJunctions()
    {
        // We need to call mklink, and rmdir on Windows 7 (version 6.1)
        return function_exists('proc_open') &&
            (PHP_WINDOWS_VERSION_MAJOR > 6 ||
            (PHP_WINDOWS_VERSION_MAJOR === 6 && PHP_WINDOWS_VERSION_MINOR >= 1));
    }
}
<?php

namespace Composer\Downloader;

use Composer\Package\PackageInterface;
use Composer\Pcre\Preg;
use Composer\Util\ProcessExecutor;

/**
 * @author BohwaZ <http://bohwaz.net/>
 */
class FossilDownloader extends VcsDownloader
{
    /**
     * @inheritDoc
     */
    protected function doDownload(PackageInterface $package, $path, $url, PackageInterface $prevPackage = null)
    {
        return \React\Promise\resolve();
    }

/**
     * @inheritDoc
     */
    protected function doInstall(PackageInterface $package, $path, $url)
    {
        // Ensure we are allowed to use this URL by config
        $this->config->prohibitUrlByConfig($url, $this->io);

$url = ProcessExecutor::escape($url);
        $ref = ProcessExecutor::escape($package->getSourceReference());
        $repoFile = $path . '.fossil';
        $this->io->writeError("Cloning ".$package->getSourceReference());
        $command = sprintf('fossil clone -- %s %s', $url, ProcessExecutor::escape($repoFile));
        if (0 !== $this->process->execute($command, $ignoredOutput)) {
            throw new \RuntimeException('Failed to execute ' . $command . "\n\n" . $this->process->getErrorOutput());
        }
        $command = sprintf('fossil open --nested -- %s', ProcessExecutor::escape($repoFile));
        if (0 !== $this->process->execute($command, $ignoredOutput, realpath($path))) {
            throw new \RuntimeException('Failed to execute ' . $command . "\n\n" . $this->process->getErrorOutput());
        }
        $command = sprintf('fossil update -- %s', $ref);
        if (0 !== $this->process->execute($command, $ignoredOutput, realpath($path))) {
            throw new \RuntimeException('Failed to execute ' . $command . "\n\n" . $this->process->getErrorOutput());
        }

return \React\Promise\resolve();
    }

/**
     * @inheritDoc
     */
    protected function doUpdate(PackageInterface $initial, PackageInterface $target, $path, $url)
    {
        // Ensure we are allowed to use this URL by config
        $this->config->prohibitUrlByConfig($url, $this->io);

$ref = ProcessExecutor::escape($target->getSourceReference());
        $this->io->writeError(" Updating to ".$target->getSourceReference());

if (!$this->hasMetadataRepository($path)) {
            throw new \RuntimeException('The .fslckout file is missing from '.$path.', see https://getcomposer.org/commit-deps for more information');
        }

$command = sprintf('fossil pull && fossil up %s', $ref);
        if (0 !== $this->process->execute($command, $ignoredOutput, realpath($path))) {
            throw new \RuntimeException('Failed to execute ' . $command . "\n\n" . $this->process->getErrorOutput());
        }

return \React\Promise\resolve();
    }

/**
     * @inheritDoc
     */
    public function getLocalChanges(PackageInterface $package, $path)
    {
        if (!$this->hasMetadataRepository($path)) {
            return null;
        }

$this->process->execute('fossil changes', $output, realpath($path));

return trim($output) ?: null;
    }

/**
     * @inheritDoc
     */
    protected function getCommitLogs($fromReference, $toReference, $path)
    {
        $command = sprintf('fossil timeline -t ci -W 0 -n 0 before %s', ProcessExecutor::escape($toReference));

if (0 !== $this->process->execute($command, $output, realpath($path))) {
            throw new \RuntimeException('Failed to execute ' . $command . "\n\n" . $this->process->getErrorOutput());
        }

$log = '';
        $match = '/\d\d:\d\d:\d\d\s+\[' . $toReference . '\]/';

foreach ($this->process->splitLines($output) as $line) {
            if (Preg::isMatch($match, $line)) {
                break;
            }
            $log .= $line;
        }

return $log;
    }

/**
     * @inheritDoc
     */
    protected function hasMetadataRepository($path)
    {
        return is_file($path . '/.fslckout') || is_file($path . '/_FOSSIL_');
    }
}
<?php

namespace Composer\Downloader;

use Composer\Package\PackageInterface;
use Composer\Util\ProcessExecutor;
use Composer\Util\Hg as HgUtils;

/**
 * @author Per Bernhardt <plb@webfactory.de>
 */
class HgDownloader extends VcsDownloader
{
    /**
     * @inheritDoc
     */
    protected function doDownload(PackageInterface $package, $path, $url, PackageInterface $prevPackage = null)
    {
        if (null === HgUtils::getVersion($this->process)) {
            throw new \RuntimeException('hg was not found in your PATH, skipping source download');
        }

return \React\Promise\resolve();
    }

/**
     * @inheritDoc
     */
    protected function doInstall(PackageInterface $package, $path, $url)
    {
        $hgUtils = new HgUtils($this->io, $this->config, $this->process);

$cloneCommand = function ($url) use ($path) {
            return sprintf('hg clone -- %s %s', ProcessExecutor::escape($url), ProcessExecutor::escape($path));
        };

$hgUtils->runCommand($cloneCommand, $url, $path);

$ref = ProcessExecutor::escape($package->getSourceReference());
        $command = sprintf('hg up -- %s', $ref);
        if (0 !== $this->process->execute($command, $ignoredOutput, realpath($path))) {
            throw new \RuntimeException('Failed to execute ' . $command . "\n\n" . $this->process->getErrorOutput());
        }

return \React\Promise\resolve();
    }

/**
     * @inheritDoc
     */
    protected function doUpdate(PackageInterface $initial, PackageInterface $target, $path, $url)
    {
        $hgUtils = new HgUtils($this->io, $this->config, $this->process);

$ref = $target->getSourceReference();
        $this->io->writeError(" Updating to ".$target->getSourceReference());

if (!$this->hasMetadataRepository($path)) {
            throw new \RuntimeException('The .hg directory is missing from '.$path.', see https://getcomposer.org/commit-deps for more information');
        }

$command = function ($url) use ($ref) {
            return sprintf('hg pull -- %s && hg up -- %s', ProcessExecutor::escape($url), ProcessExecutor::escape($ref));
        };

$hgUtils->runCommand($command, $url, $path);

return \React\Promise\resolve();
    }

/**
     * @inheritDoc
     */
    public function getLocalChanges(PackageInterface $package, $path)
    {
        if (!is_dir($path.'/.hg')) {
            return null;
        }

$this->process->execute('hg st', $output, realpath($path));

return trim($output) ?: null;
    }

/**
     * @inheritDoc
     */
    protected function getCommitLogs($fromReference, $toReference, $path)
    {
        $command = sprintf('hg log -r %s:%s --style compact', ProcessExecutor::escape($fromReference), ProcessExecutor::escape($toReference));

return $output;
    }

/**
     * @inheritDoc
     */
    protected function hasMetadataRepository($path)
    {
        return is_dir($path . '/.hg');
    }
}
<?php

namespace Composer\Downloader;

use Composer\Package\PackageInterface;
use Composer\Util\Platform;
use Composer\Util\ProcessExecutor;

/**
 * GZip archive downloader.
 *
 * @author Pavel Puchkin <i@neoascetic.me>
 */
class GzipDownloader extends ArchiveDownloader
{
    protected function extract(PackageInterface $package, $file, $path)
    {
        $filename = pathinfo(parse_url($package->getDistUrl(), PHP_URL_PATH), PATHINFO_FILENAME);
        $targetFilepath = $path . DIRECTORY_SEPARATOR . $filename;

// Try to use gunzip on *nix
        if (!Platform::isWindows()) {
            $command = 'gzip -cd -- ' . ProcessExecutor::escape($file) . ' > ' . ProcessExecutor::escape($targetFilepath);

if (0 === $this->process->execute($command, $ignoredOutput)) {
                return \React\Promise\resolve();
            }

if (extension_loaded('zlib')) {
                // Fallback to using the PHP extension.
                $this->extractUsingExt($file, $targetFilepath);

return \React\Promise\resolve();
            }

$processError = 'Failed to execute ' . $command . "\n\n" . $this->process->getErrorOutput();
            throw new \RuntimeException($processError);
        }

// Windows version of PHP has built-in support of gzip functions
        $this->extractUsingExt($file, $targetFilepath);

return \React\Promise\resolve();
    }

/**
     * @param string $file
     * @param string $targetFilepath
     *
     * @return void
     */
    private function extractUsingExt($file, $targetFilepath)
    {
        $archiveFile = gzopen($file, 'rb');
        $targetFile = fopen($targetFilepath, 'wb');
        while ($string = gzread($archiveFile, 4096)) {
            fwrite($targetFile, $string, Platform::strlen($string));
        }
        gzclose($archiveFile);
        fclose($targetFile);
    }
}
<?php

namespace Composer\Downloader;

/**
 * Exception thrown when issues exist on local filesystem
 *
 * @author Javier Spagnoletti <jspagnoletti@javierspagnoletti.com.ar>
 */
class FilesystemException extends \Exception
{
    /**
     * @param string          $message
     * @param int             $code
     * @param \Exception|null $previous
     */
    public function __construct($message = '', $code = 0, \Exception $previous = null)
    {
        parent::__construct("Filesystem exception: \n".$message, $code, $previous);
    }
}
<?php

namespace Composer\Downloader;

use Composer\Package\PackageInterface;
use Symfony\Component\Finder\Finder;
use React\Promise\PromiseInterface;
use Composer\DependencyResolver\Operation\InstallOperation;

/**
 * Base downloader for archives
 *
 * @author Kirill chEbba Chebunin <iam@chebba.org>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 * @author François Pluchino <francois.pluchino@opendisplay.com>
 */
abstract class ArchiveDownloader extends FileDownloader
{
    /**
     * @var array<string, true>
     * @protected
     */
    public $cleanupExecuted = array();

/**
     * @return PromiseInterface|null
     */
    public function prepare($type, PackageInterface $package, $path, PackageInterface $prevPackage = null)
    {
        unset($this->cleanupExecuted[$package->getName()]);

return parent::prepare($type, $package, $path, $prevPackage);
    }

/**
     * @return PromiseInterface|null
     */
    public function cleanup($type, PackageInterface $package, $path, PackageInterface $prevPackage = null)
    {
        $this->cleanupExecuted[$package->getName()] = true;

return parent::cleanup($type, $package, $path, $prevPackage);
    }

/**
     * @inheritDoc
     *
     * @param bool $output
     *
     * @return PromiseInterface
     *
     * @throws \RuntimeException
     * @throws \UnexpectedValueException
     */
    public function install(PackageInterface $package, $path, $output = true)
    {
        if ($output) {
            $this->io->writeError("  - " . InstallOperation::format($package) . $this->getInstallOperationAppendix($package, $path));
        }

$vendorDir = $this->config->get('vendor-dir');

// clean up the target directory, unless it contains the vendor dir, as the vendor dir contains
        // the archive to be extracted. This is the case when installing with create-project in the current directory
        // but in that case we ensure the directory is empty already in ProjectInstaller so no need to empty it here.
        if (false === strpos($this->filesystem->normalizePath($vendorDir), $this->filesystem->normalizePath($path.DIRECTORY_SEPARATOR))) {
            $this->filesystem->emptyDirectory($path);
        }

do {
            $temporaryDir = $vendorDir.'/composer/'.substr(md5(uniqid('', true)), 0, 8);
        } while (is_dir($temporaryDir));

$this->addCleanupPath($package, $temporaryDir);
        // avoid cleaning up $path if installing in "." for eg create-project as we can not
        // delete the directory we are currently in on windows
        if (!is_dir($path) || realpath($path) !== getcwd()) {
            $this->addCleanupPath($package, $path);
        }

$this->filesystem->ensureDirectoryExists($temporaryDir);
        $fileName = $this->getFileName($package, $path);

$filesystem = $this->filesystem;
        $self = $this;

$cleanup = function () use ($path, $filesystem, $temporaryDir, $package, $self) {
            // remove cache if the file was corrupted
            $self->clearLastCacheWrite($package);

// clean up
            $filesystem->removeDirectory($temporaryDir);
            if (is_dir($path) && realpath($path) !== getcwd()) {
                $filesystem->removeDirectory($path);
            }
            $self->removeCleanupPath($package, $temporaryDir);
            $self->removeCleanupPath($package, realpath($path));
        };

$promise = null;
        try {
            $promise = $this->extract($package, $fileName, $temporaryDir);
        } catch (\Exception $e) {
            $cleanup();
            throw $e;
        }

if (!$promise instanceof PromiseInterface) {
            $promise = \React\Promise\resolve();
        }

return $promise->then(function () use ($self, $package, $filesystem, $fileName, $temporaryDir, $path) {
            $filesystem->unlink($fileName);

/**
             * Returns the folder content, excluding .DS_Store
             *
             * @param  string         $dir Directory
             * @return \SplFileInfo[]
             */
            $getFolderContent = function ($dir) {
                $finder = Finder::create()
                    ->ignoreVCS(false)
                    ->ignoreDotFiles(false)
                    ->notName('.DS_Store')
                    ->depth(0)
                    ->in($dir);

return iterator_to_array($finder);
            };
            $renameRecursively = null;
            /**
             * Renames (and recursively merges if needed) a folder into another one
             *
             * For custom installers, where packages may share paths, and given Composer 2's parallelism, we need to make sure
             * that the source directory gets merged into the target one if the target exists. Otherwise rename() by default would
             * put the source into the target e.g. src/ => target/src/ (assuming target exists) instead of src/ => target/
             *
             * @param  string $from Directory
             * @param  string $to   Directory
             * @return void
             */
            $renameRecursively = function ($from, $to) use ($filesystem, $getFolderContent, $package, &$renameRecursively) {
                $contentDir = $getFolderContent($from);

// move files back out of the temp dir
                foreach ($contentDir as $file) {
                    $file = (string) $file;
                    if (is_dir($to . '/' . basename($file))) {
                        if (!is_dir($file)) {
                            throw new \RuntimeException('Installing '.$package.' would lead to overwriting the '.$to.'/'.basename($file).' directory with a file from the package, invalid operation.');
                        }
                        $renameRecursively($file, $to . '/' . basename($file));
                    } else {
                        $filesystem->rename($file, $to . '/' . basename($file));
                    }
                }
            };

$renameAsOne = false;
            if (!file_exists($path)) {
                $renameAsOne = true;
            } elseif ($filesystem->isDirEmpty($path)) {
                try {
                    if ($filesystem->removeDirectoryPhp($path)) {
                        $renameAsOne = true;
                    }
                } catch (\RuntimeException $e) {
                    // ignore error, and simply do not renameAsOne
                }
            }

$contentDir = $getFolderContent($temporaryDir);
            $singleDirAtTopLevel = 1 === count($contentDir) && is_dir(reset($contentDir));

if ($renameAsOne) {
                // if the target $path is clear, we can rename the whole package in one go instead of looping over the contents
                if ($singleDirAtTopLevel) {
                    $extractedDir = (string) reset($contentDir);
                } else {
                    $extractedDir = $temporaryDir;
                }
                $filesystem->rename($extractedDir, $path);
            } else {
                // only one dir in the archive, extract its contents out of it
                $from = $temporaryDir;
                if ($singleDirAtTopLevel) {
                    $from = (string) reset($contentDir);
                }

$renameRecursively($from, $path);
            }

$promise = $filesystem->removeDirectoryAsync($temporaryDir);

return $promise->then(function () use ($self, $package, $path, $temporaryDir) {
                $self->removeCleanupPath($package, $temporaryDir);
                $self->removeCleanupPath($package, $path);
            });
        }, function ($e) use ($cleanup) {
            $cleanup();

throw $e;
        });
    }

/**
     * @inheritDoc
     */
    protected function getInstallOperationAppendix(PackageInterface $package, $path)
    {
        return ': Extracting archive';
    }

/**
     * Extract file to directory
     *
     * @param string $file Extracted file
     * @param string $path Directory
     *
     * @throws \UnexpectedValueException If can not extract downloaded file to path
     * @return PromiseInterface|null
     */
    abstract protected function extract(PackageInterface $package, $file, $path);
}
<?php

namespace Composer\Downloader;

use Composer\Util\IniHelper;
use Composer\Util\Platform;
use Composer\Util\ProcessExecutor;
use Composer\Package\PackageInterface;
use RarArchive;

/**
 * RAR archive downloader.
 *
 * Based on previous work by Jordi Boggiano ({@see ZipDownloader}).
 *
 * @author Derrick Nelson <drrcknlsn@gmail.com>
 */
class RarDownloader extends ArchiveDownloader
{
    protected function extract(PackageInterface $package, $file, $path)
    {
        $processError = null;

// Try to use unrar on *nix
        if (!Platform::isWindows()) {
            $command = 'unrar x -- ' . ProcessExecutor::escape($file) . ' ' . ProcessExecutor::escape($path) . ' >/dev/null && chmod -R u+w ' . ProcessExecutor::escape($path);

if (0 === $this->process->execute($command, $ignoredOutput)) {
                return \React\Promise\resolve();
            }

$processError = 'Failed to execute ' . $command . "\n\n" . $this->process->getErrorOutput();
        }

if (!class_exists('RarArchive')) {
            // php.ini path is added to the error message to help users find the correct file
            $iniMessage = IniHelper::getMessage();

$error = "Could not decompress the archive, enable the PHP rar extension or install unrar.\n"
                . $iniMessage . "\n" . $processError;

if (!Platform::isWindows()) {
                $error = "Could not decompress the archive, enable the PHP rar extension.\n" . $iniMessage;
            }

throw new \RuntimeException($error);
        }

$rarArchive = RarArchive::open($file);

if (false === $rarArchive) {
            throw new \UnexpectedValueException('Could not open RAR archive: ' . $file);
        }

$entries = $rarArchive->getEntries();

if (false === $entries) {
            throw new \RuntimeException('Could not retrieve RAR archive entries');
        }

foreach ($entries as $entry) {
            if (false === $entry->extract($path)) {
                throw new \RuntimeException('Could not extract entry');
            }
        }

$rarArchive->close();

return \React\Promise\resolve();
    }
}
<?php

namespace Composer\Downloader;

use Composer\Package\PackageInterface;
use Composer\Util\ProcessExecutor;

/**
 * Xz archive downloader.
 *
 * @author Pavel Puchkin <i@neoascetic.me>
 * @author Pierre Rudloff <contact@rudloff.pro>
 */
class XzDownloader extends ArchiveDownloader
{
    protected function extract(PackageInterface $package, $file, $path)
    {
        $command = 'tar -xJf ' . ProcessExecutor::escape($file) . ' -C ' . ProcessExecutor::escape($path);

if (0 === $this->process->execute($command, $ignoredOutput)) {
            return \React\Promise\resolve();
        }

$processError = 'Failed to execute ' . $command . "\n\n" . $this->process->getErrorOutput();

throw new \RuntimeException($processError);
    }
}
<?php

namespace Composer\Downloader;

use Composer\Package\PackageInterface;
use Composer\Util\IniHelper;
use Composer\Util\Platform;
use Composer\Util\ProcessExecutor;
use Symfony\Component\Process\ExecutableFinder;
use React\Promise\PromiseInterface;
use ZipArchive;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class ZipDownloader extends ArchiveDownloader
{
    /** @var array<int, array{0: string, 1: string}> */
    private static $unzipCommands;
    /** @var bool */
    private static $hasZipArchive;
    /** @var bool */
    private static $isWindows;

/** @var ZipArchive|null */
    private $zipArchiveObject; // @phpstan-ignore-line helper property that is set via reflection for testing purposes

/**
     * @inheritDoc
     */
    public function download(PackageInterface $package, $path, PackageInterface $prevPackage = null, $output = true)
    {
        if (null === self::$unzipCommands) {
            self::$unzipCommands = array();
            $finder = new ExecutableFinder;
            if (Platform::isWindows() && ($cmd = $finder->find('7z', null, array('C:\Program Files\7-Zip')))) {
                self::$unzipCommands[] = array('7z', ProcessExecutor::escape($cmd).' x -bb0 -y %s -o%s');
            }
            if ($cmd = $finder->find('unzip')) {
                self::$unzipCommands[] = array('unzip', ProcessExecutor::escape($cmd).' -qq %s -d %s');
            }
            if (!Platform::isWindows() && ($cmd = $finder->find('7z'))) { // 7z linux/macOS support is only used if unzip is not present
                self::$unzipCommands[] = array('7z', ProcessExecutor::escape($cmd).' x -bb0 -y %s -o%s');
            }
            if (!Platform::isWindows() && ($cmd = $finder->find('7zz'))) { // 7zz linux/macOS support is only used if unzip is not present
                self::$unzipCommands[] = array('7zz', ProcessExecutor::escape($cmd).' x -bb0 -y %s -o%s');
            }
        }

$procOpenMissing = false;
        if (!function_exists('proc_open')) {
            self::$unzipCommands = array();
            $procOpenMissing = true;
        }

if (null === self::$hasZipArchive) {
            self::$hasZipArchive = class_exists('ZipArchive');
        }

if (!self::$hasZipArchive && !self::$unzipCommands) {
            // php.ini path is added to the error message to help users find the correct file
            $iniMessage = IniHelper::getMessage();
            if ($procOpenMissing) {
                $error = "The zip extension is missing and unzip/7z commands cannot be called as proc_open is disabled, skipping.\n" . $iniMessage;
            } else {
                $error = "The zip extension and unzip/7z commands are both missing, skipping.\n" . $iniMessage;
            }

throw new \RuntimeException($error);
        }

if (null === self::$isWindows) {
            self::$isWindows = Platform::isWindows();

if (!self::$isWindows && !self::$unzipCommands) {
                if ($procOpenMissing) {
                    $this->io->writeError("<warning>proc_open is disabled so 'unzip' and '7z' commands cannot be used, zip files are being unpacked using the PHP zip extension.</warning>");
                    $this->io->writeError("<warning>This may cause invalid reports of corrupted archives. Besides, any UNIX permissions (e.g. executable) defined in the archives will be lost.</warning>");
                    $this->io->writeError("<warning>Enabling proc_open and installing 'unzip' or '7z' may remediate them.</warning>");
                } else {
                    $this->io->writeError("<warning>As there is no 'unzip' nor '7z' command installed zip files are being unpacked using the PHP zip extension.</warning>");
                    $this->io->writeError("<warning>This may cause invalid reports of corrupted archives. Besides, any UNIX permissions (e.g. executable) defined in the archives will be lost.</warning>");
                    $this->io->writeError("<warning>Installing 'unzip' or '7z' may remediate them.</warning>");
                }
            }
        }

return parent::download($package, $path, $prevPackage, $output);
    }

/**
     * extract $file to $path with "unzip" command
     *
     * @param  string           $file File to extract
     * @param  string           $path Path where to extract file
     * @return PromiseInterface
     */
    private function extractWithSystemUnzip(PackageInterface $package, $file, $path)
    {
        // Force Exception throwing if the other alternative extraction method is not available
        $isLastChance = !self::$hasZipArchive;

if (!self::$unzipCommands) {
            // This was call as the favorite extract way, but is not available
            // We switch to the alternative
            return $this->extractWithZipArchive($package, $file, $path);
        }

$commandSpec = reset(self::$unzipCommands);
        $command = sprintf($commandSpec[1], ProcessExecutor::escape($file), ProcessExecutor::escape($path));
        // normalize separators to backslashes to avoid problems with 7-zip on windows
        // see https://github.com/composer/composer/issues/10058
        if (Platform::isWindows()) {
            $command = sprintf($commandSpec[1], ProcessExecutor::escape(strtr($file, '/', '\\')), ProcessExecutor::escape(strtr($path, '/', '\\')));
        }

$executable = $commandSpec[0];

$self = $this;
        $io = $this->io;
        $tryFallback = function ($processError) use ($isLastChance, $io, $self, $file, $path, $package, $executable) {
            if ($isLastChance) {
                throw $processError;
            }

if (!is_file($file)) {
                $io->writeError('    <warning>'.$processError->getMessage().'</warning>');
                $io->writeError('    <warning>This most likely is due to a custom installer plugin not handling the returned Promise from the downloader</warning>');
                $io->writeError('    <warning>See https://github.com/composer/installers/commit/5006d0c28730ade233a8f42ec31ac68fb1c5c9bb for an example fix</warning>');
            } else {
                $io->writeError('    <warning>'.$processError->getMessage().'</warning>');
                $io->writeError('    The archive may contain identical file names with different capitalization (which fails on case insensitive filesystems)');
                $io->writeError('    Unzip with '.$executable.' command failed, falling back to ZipArchive class');
            }

return $self->extractWithZipArchive($package, $file, $path);
        };

try {
            $promise = $this->process->executeAsync($command);

return $promise->then(function ($process) use ($tryFallback, $command, $package, $file, $self) {
                if (!$process->isSuccessful()) {
                    if (isset($self->cleanupExecuted[$package->getName()])) {
                        throw new \RuntimeException('Failed to extract '.$package->getName().' as the installation was aborted by another package operation.');
                    }

$output = $process->getErrorOutput();
                    $output = str_replace(', '.$file.'.zip or '.$file.'.ZIP', '', $output);

return $tryFallback(new \RuntimeException('Failed to extract '.$package->getName().': ('.$process->getExitCode().') '.$command."\n\n".$output));
                }
            });
        } catch (\Exception $e) {
            return $tryFallback($e);
        } catch (\Throwable $e) {
            return $tryFallback($e);
        }
    }

/**
     * extract $file to $path with ZipArchive
     *
     * @param  string           $file File to extract
     * @param  string           $path Path where to extract file
     * @return PromiseInterface
     *
     * TODO v3 should make this private once we can drop PHP 5.3 support
     * @protected
     */
    public function extractWithZipArchive(PackageInterface $package, $file, $path)
    {
        $processError = null;
        $zipArchive = $this->zipArchiveObject ?: new ZipArchive();

try {
            if (true === ($retval = $zipArchive->open($file))) {
                $extractResult = $zipArchive->extractTo($path);

if (true === $extractResult) {
                    $zipArchive->close();

return \React\Promise\resolve();
                }

$processError = new \RuntimeException(rtrim("There was an error extracting the ZIP file, it is either corrupted or using an invalid format.\n"));
            } else {
                $processError = new \UnexpectedValueException(rtrim($this->getErrorMessage($retval, $file)."\n"), $retval);
            }
        } catch (\ErrorException $e) {
            $processError = new \RuntimeException('The archive may contain identical file names with different capitalization (which fails on case insensitive filesystems): '.$e->getMessage(), 0, $e);
        } catch (\Exception $e) {
            $processError = $e;
        } catch (\Throwable $e) {
            $processError = $e;
        }

throw $processError;
    }

/**
     * extract $file to $path
     *
     * @param  string                $file File to extract
     * @param  string                $path Path where to extract file
     * @return PromiseInterface|null
     *
     * TODO v3 should make this private once we can drop PHP 5.3 support
     * @protected
     */
    public function extract(PackageInterface $package, $file, $path)
    {
        return $this->extractWithSystemUnzip($package, $file, $path);
    }

/**
     * Give a meaningful error message to the user.
     *
     * @param  int    $retval
     * @param  string $file
     * @return string
     */
    protected function getErrorMessage($retval, $file)
    {
        switch ($retval) {
            case ZipArchive::ER_EXISTS:
                return sprintf("File '%s' already exists.", $file);
            case ZipArchive::ER_INCONS:
                return sprintf("Zip archive '%s' is inconsistent.", $file);
            case ZipArchive::ER_INVAL:
                return sprintf("Invalid argument (%s)", $file);
            case ZipArchive::ER_MEMORY:
                return sprintf("Malloc failure (%s)", $file);
            case ZipArchive::ER_NOENT:
                return sprintf("No such zip file: '%s'", $file);
            case ZipArchive::ER_NOZIP:
                return sprintf("'%s' is not a zip archive.", $file);
            case ZipArchive::ER_OPEN:
                return sprintf("Can't open zip file: %s", $file);
            case ZipArchive::ER_READ:
                return sprintf("Zip read error (%s)", $file);
            case ZipArchive::ER_SEEK:
                return sprintf("Zip seek error (%s)", $file);
            default:
                return sprintf("'%s' is not a valid zip archive, got error code: %s", $file, $retval);
        }
    }
}
<?php

namespace Composer\Downloader;

use Composer\Package\PackageInterface;
use React\Promise\PromiseInterface;

/**
 * Downloader interface.
 *
 * @author Konstantin Kudryashov <ever.zet@gmail.com>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
interface DownloaderInterface
{
    /**
     * Returns installation source (either source or dist).
     *
     * @return string "source" or "dist"
     */
    public function getInstallationSource();

/**
     * This should do any network-related tasks to prepare for an upcoming install/update
     *
     * @param  string $path download path
     * @return PromiseInterface|null
     */
    public function download(PackageInterface $package, $path, PackageInterface $prevPackage = null);

/**
     * Do anything that needs to be done between all downloads have been completed and the actual operation is executed
     *
     * All packages get first downloaded, then all together prepared, then all together installed/updated/uninstalled. Therefore
     * for error recovery it is important to avoid failing during install/update/uninstall as much as possible, and risky things or
     * user prompts should happen in the prepare step rather. In case of failure, cleanup() will be called so that changes can
     * be undone as much as possible.
     *
     * @param  string                $type        one of install/update/uninstall
     * @param  PackageInterface      $package     package instance
     * @param  string                $path        download path
     * @param  PackageInterface      $prevPackage previous package instance in case of an update
     * @return PromiseInterface|null
     */
    public function prepare($type, PackageInterface $package, $path, PackageInterface $prevPackage = null);

/**
     * Installs specific package into specific folder.
     *
     * @param  PackageInterface      $package package instance
     * @param  string                $path    download path
     * @return PromiseInterface|null
     */
    public function install(PackageInterface $package, $path);

/**
     * Updates specific package in specific folder from initial to target version.
     *
     * @param  PackageInterface      $initial initial package
     * @param  PackageInterface      $target  updated package
     * @param  string                $path    download path
     * @return PromiseInterface|null
     */
    public function update(PackageInterface $initial, PackageInterface $target, $path);

/**
     * Removes specific package from specific folder.
     *
     * @param  PackageInterface      $package package instance
     * @param  string                $path    download path
     * @return PromiseInterface|null
     */
    public function remove(PackageInterface $package, $path);

/**
     * Do anything to cleanup changes applied in the prepare or install/update/uninstall steps
     *
     * Note that cleanup will be called for all packages, either after install/update/uninstall is complete,
     * or if any package failed any operation. This is to give all installers a change to cleanup things
     * they did previously, so you need to keep track of changes applied in the installer/downloader themselves.
     *
     * @param  string                $type        one of install/update/uninstall
     * @param  PackageInterface      $package     package instance
     * @param  string                $path        download path
     * @param  PackageInterface      $prevPackage previous package instance in case of an update
     * @return PromiseInterface|null
     */
    public function cleanup($type, PackageInterface $package, $path, PackageInterface $prevPackage = null);
}
<?php

namespace Composer\Downloader;

use Composer\Package\PackageInterface;
use Composer\Repository\VcsRepository;
use Composer\Util\Perforce;

/**
 * @author Matt Whittom <Matt.Whittom@veteransunited.com>
 */
class PerforceDownloader extends VcsDownloader
{
    /** @var Perforce|null */
    protected $perforce;

/**
     * @inheritDoc
     */
    protected function doDownload(PackageInterface $package, $path, $url, PackageInterface $prevPackage = null)
    {
        return \React\Promise\resolve();
    }

/**
     * @inheritDoc
     */
    public function doInstall(PackageInterface $package, $path, $url)
    {
        $ref = $package->getSourceReference();
        $label = $this->getLabelFromSourceReference((string) $ref);

$this->io->writeError('Cloning ' . $ref);
        $this->initPerforce($package, $path, $url);
        $this->perforce->setStream($ref);
        $this->perforce->p4Login();
        $this->perforce->writeP4ClientSpec();
        $this->perforce->connectClient();
        $this->perforce->syncCodeBase($label);
        $this->perforce->cleanupClientSpec();

return \React\Promise\resolve();
    }

/**
     * @param string $ref
     *
     * @return string|null
     */
    private function getLabelFromSourceReference($ref)
    {
        $pos = strpos($ref, '@');
        if (false !== $pos) {
            return substr($ref, $pos + 1);
        }

return null;
    }

/**
     * @param string $path
     * @param string $url
     *
     * @return void
     */
    public function initPerforce(PackageInterface $package, $path, $url)
    {
        if (!empty($this->perforce)) {
            $this->perforce->initializePath($path);

return;
        }

$repository = $package->getRepository();
        $repoConfig = null;
        if ($repository instanceof VcsRepository) {
            $repoConfig = $this->getRepoConfig($repository);
        }
        $this->perforce = Perforce::create($repoConfig, $url, $path, $this->process, $this->io);
    }

/**
     * @return array<string, mixed>
     */
    private function getRepoConfig(VcsRepository $repository)
    {
        return $repository->getRepoConfig();
    }

/**
     * @inheritDoc
     */
    protected function doUpdate(PackageInterface $initial, PackageInterface $target, $path, $url)
    {
        return $this->doInstall($target, $path, $url);
    }

/**
     * @inheritDoc
     */
    public function getLocalChanges(PackageInterface $package, $path)
    {
        $this->io->writeError('Perforce driver does not check for local changes before overriding');

return null;
    }

/**
     * @inheritDoc
     */
    protected function getCommitLogs($fromReference, $toReference, $path)
    {
        return $this->perforce->getCommitLogs($fromReference, $toReference);
    }

/**
     * @return void
     */
    public function setPerforce(Perforce $perforce)
    {
        $this->perforce = $perforce;
    }

/**
     * @inheritDoc
     */
    protected function hasMetadataRepository($path)
    {
        return true;
    }
}
<?php

namespace Composer\Downloader;

use Composer\Config;
use Composer\Cache;
use Composer\IO\IOInterface;
use Composer\IO\NullIO;
use Composer\Exception\IrrecoverableDownloadException;
use Composer\Package\Comparer\Comparer;
use Composer\DependencyResolver\Operation\UpdateOperation;
use Composer\DependencyResolver\Operation\InstallOperation;
use Composer\DependencyResolver\Operation\UninstallOperation;
use Composer\Package\PackageInterface;
use Composer\Plugin\PluginEvents;
use Composer\Plugin\PostFileDownloadEvent;
use Composer\Plugin\PreFileDownloadEvent;
use Composer\EventDispatcher\EventDispatcher;
use Composer\Util\Filesystem;
use Composer\Util\Silencer;
use Composer\Util\HttpDownloader;
use Composer\Util\Url as UrlUtil;
use Composer\Util\ProcessExecutor;
use React\Promise\PromiseInterface;

/**
 * Base downloader for files
 *
 * @author Kirill chEbba Chebunin <iam@chebba.org>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 * @author François Pluchino <francois.pluchino@opendisplay.com>
 * @author Nils Adermann <naderman@naderman.de>
 */
class FileDownloader implements DownloaderInterface, ChangeReportInterface
{
    /** @var IOInterface */
    protected $io;
    /** @var Config */
    protected $config;
    /** @var HttpDownloader */
    protected $httpDownloader;
    /** @var Filesystem */
    protected $filesystem;
    /** @var ?Cache */
    protected $cache;
    /** @var ?EventDispatcher */
    protected $eventDispatcher;
    /** @var ProcessExecutor */
    protected $process;
    /**
     * @var array<string, int|string>
     * @private
     * @internal
     */
    public static $downloadMetadata = array();

/**
     * @private this is only public for php 5.3 support in closures
     *
     * @var array<string, string> Map of package name to cache key
     */
    public $lastCacheWrites = array();
    /** @var array<string, string[]> Map of package name to list of paths */
    private $additionalCleanupPaths = array();

/**
     * Constructor.
     *
     * @param IOInterface     $io              The IO instance
     * @param Config          $config          The config
     * @param HttpDownloader  $httpDownloader  The remote filesystem
     * @param EventDispatcher $eventDispatcher The event dispatcher
     * @param Cache           $cache           Cache instance
     * @param Filesystem      $filesystem      The filesystem
     */
    public function __construct(IOInterface $io, Config $config, HttpDownloader $httpDownloader, EventDispatcher $eventDispatcher = null, Cache $cache = null, Filesystem $filesystem = null, ProcessExecutor $process = null)
    {
        $this->io = $io;
        $this->config = $config;
        $this->eventDispatcher = $eventDispatcher;
        $this->httpDownloader = $httpDownloader;
        $this->cache = $cache;
        $this->process = $process ?: new ProcessExecutor($io);
        $this->filesystem = $filesystem ?: new Filesystem($this->process);

if ($this->cache && $this->cache->gcIsNecessary()) {
            $this->io->writeError('Running cache garbage collection', true, IOInterface::VERY_VERBOSE);
            $this->cache->gc((int) $config->get('cache-files-ttl'), (int) $config->get('cache-files-maxsize'));
        }
    }

/**
     * @inheritDoc
     */
    public function getInstallationSource()
    {
        return 'dist';
    }

/**
     * @inheritDoc
     *
     * @param bool $output
     */
    public function download(PackageInterface $package, $path, PackageInterface $prevPackage = null, $output = true)
    {
        if (!$package->getDistUrl()) {
            throw new \InvalidArgumentException('The given package is missing url information');
        }

$cacheKeyGenerator = function (PackageInterface $package, $key) {
            $cacheKey = sha1($key);

return $package->getName().'/'.$cacheKey.'.'.$package->getDistType();
        };

$retries = 3;
        $distUrls = $package->getDistUrls();
        /** @var array<array{base: string, processed: string, cacheKey: string}> $urls */
        $urls = array();
        foreach ($distUrls as $index => $url) {
            $processedUrl = $this->processUrl($package, $url);
            $urls[$index] = array(
                'base' => $url,
                'processed' => $processedUrl,
                // we use the complete download url here to avoid conflicting entries
                // from different packages, which would potentially allow a given package
                // in a third party repo to pre-populate the cache for the same package in
                // packagist for example.
                'cacheKey' => $cacheKeyGenerator($package, $processedUrl),
            );
        }

$fileName = $this->getFileName($package, $path);
        $this->filesystem->ensureDirectoryExists($path);
        $this->filesystem->ensureDirectoryExists(dirname($fileName));

$io = $this->io;
        $cache = $this->cache;
        $httpDownloader = $this->httpDownloader;
        $eventDispatcher = $this->eventDispatcher;
        $filesystem = $this->filesystem;
        $self = $this;

$accept = null;
        $reject = null;
        $download = function () use ($io, $output, $httpDownloader, $cache, $cacheKeyGenerator, $eventDispatcher, $package, $fileName, &$urls, &$accept, &$reject, $self) {
            /** @var array{base: string, processed: string, cacheKey: string} $url */
            $url = reset($urls);
            $index = key($urls);

if ($eventDispatcher) {
                $preFileDownloadEvent = new PreFileDownloadEvent(PluginEvents::PRE_FILE_DOWNLOAD, $httpDownloader, $url['processed'], 'package', $package);
                $eventDispatcher->dispatch($preFileDownloadEvent->getName(), $preFileDownloadEvent);
                if ($preFileDownloadEvent->getCustomCacheKey() !== null) {
                    $url['cacheKey'] = $cacheKeyGenerator($package, $preFileDownloadEvent->getCustomCacheKey());
                } elseif ($preFileDownloadEvent->getProcessedUrl() !== $url['processed']) {
                    $url['cacheKey'] = $cacheKeyGenerator($package, $preFileDownloadEvent->getProcessedUrl());
                }
                $url['processed'] = $preFileDownloadEvent->getProcessedUrl();
            }

$urls[$index] = $url;

$checksum = $package->getDistSha1Checksum();
            $cacheKey = $url['cacheKey'];

// use from cache if it is present and has a valid checksum or we have no checksum to check against
            if ($cache && (!$checksum || $checksum === $cache->sha1($cacheKey)) && $cache->copyTo($cacheKey, $fileName)) {
                if ($output) {
                    $io->writeError("  - Loading <info>" . $package->getName() . "</info> (<comment>" . $package->getFullPrettyVersion() . "</comment>) from cache", true, IOInterface::VERY_VERBOSE);
                }
                // mark the file as having been written in cache even though it is only read from cache, so that if
                // the cache is corrupt the archive will be deleted and the next attempt will re-download it
                // see https://github.com/composer/composer/issues/10028
                if (!$cache->isReadOnly()) {
                    $self->lastCacheWrites[$package->getName()] = $cacheKey;
                }
                $result = \React\Promise\resolve($fileName);
            } else {
                if ($output) {
                    $io->writeError("  - Downloading <info>" . $package->getName() . "</info> (<comment>" . $package->getFullPrettyVersion() . "</comment>)");
                }

$result = $httpDownloader->addCopy($url['processed'], $fileName, $package->getTransportOptions())
                    ->then($accept, $reject);
            }

return $result->then(function ($result) use ($fileName, $checksum, $url, $package, $eventDispatcher) {
                // in case of retry, the first call's Promise chain finally calls this twice at the end,
                // once with $result being the returned $fileName from $accept, and then once for every
                // failed request with a null result, which can be skipped.
                if (null === $result) {
                    return $fileName;
                }

if (!file_exists($fileName)) {
                    throw new \UnexpectedValueException($url['base'].' could not be saved to '.$fileName.', make sure the'
                        .' directory is writable and you have internet connectivity');
                }

if ($checksum && hash_file('sha1', $fileName) !== $checksum) {
                    throw new \UnexpectedValueException('The checksum verification of the file failed (downloaded from '.$url['base'].')');
                }

if ($eventDispatcher) {
                    $postFileDownloadEvent = new PostFileDownloadEvent(PluginEvents::POST_FILE_DOWNLOAD, $fileName, $checksum, $url['processed'], 'package', $package);
                    $eventDispatcher->dispatch($postFileDownloadEvent->getName(), $postFileDownloadEvent);
                }

return $fileName;
            });
        };

$accept = function ($response) use ($cache, $package, $fileName, $self, &$urls) {
            $url = reset($urls);
            $cacheKey = $url['cacheKey'];
            FileDownloader::$downloadMetadata[$package->getName()] = @filesize($fileName) ?: $response->getHeader('Content-Length') ?: '?';

if ($cache && !$cache->isReadOnly()) {
                $self->lastCacheWrites[$package->getName()] = $cacheKey;
                $cache->copyFrom($cacheKey, $fileName);
            }

$response->collect();

return $fileName;
        };

$reject = function ($e) use ($io, &$urls, $download, $fileName, $package, &$retries, $filesystem, $self) {
            // clean up
            if (file_exists($fileName)) {
                $filesystem->unlink($fileName);
            }
            $self->clearLastCacheWrite($package);

if ($e instanceof IrrecoverableDownloadException) {
                throw $e;
            }

if ($e instanceof MaxFileSizeExceededException) {
                throw $e;
            }

if ($e instanceof TransportException) {
                // if we got an http response with a proper code, then requesting again will probably not help, abort
                if ((0 !== $e->getCode() && !in_array($e->getCode(), array(500, 502, 503, 504))) || !$retries) {
                    $retries = 0;
                }
            }

// special error code returned when network is being artificially disabled
            if ($e instanceof TransportException && $e->getStatusCode() === 499) {
                $retries = 0;
                $urls = array();
            }

if ($retries) {
                usleep(500000);
                $retries--;

return $download();
            }

array_shift($urls);
            if ($urls) {
                if ($io->isDebug()) {
                    $io->writeError('    Failed downloading '.$package->getName().': ['.get_class($e).'] '.$e->getCode().': '.$e->getMessage());
                    $io->writeError('    Trying the next URL for '.$package->getName());
                } else {
                    $io->writeError('    Failed downloading '.$package->getName().', trying the next URL ('.$e->getCode().': '.$e->getMessage().')');
                }

$retries = 3;
                usleep(100000);

return $download();
            }

throw $e;
        };

return $download();
    }

/**
     * @inheritDoc
     */
    public function prepare($type, PackageInterface $package, $path, PackageInterface $prevPackage = null)
    {
        return \React\Promise\resolve();
    }

/**
     * @inheritDoc
     */
    public function cleanup($type, PackageInterface $package, $path, PackageInterface $prevPackage = null)
    {
        $fileName = $this->getFileName($package, $path);
        if (file_exists($fileName)) {
            $this->filesystem->unlink($fileName);
        }

$dirsToCleanUp = array(
            $this->config->get('vendor-dir').'/composer/',
            $this->config->get('vendor-dir'),
            $path,
        );

if (isset($this->additionalCleanupPaths[$package->getName()])) {
            foreach ($this->additionalCleanupPaths[$package->getName()] as $path) {
                $this->filesystem->remove($path);
            }
        }

foreach ($dirsToCleanUp as $dir) {
            if (is_dir($dir) && $this->filesystem->isDirEmpty($dir) && realpath($dir) !== getcwd()) {
                $this->filesystem->removeDirectoryPhp($dir);
            }
        }

return \React\Promise\resolve();
    }

/**
     * @inheritDoc
     *
     * @param bool $output
     */
    public function install(PackageInterface $package, $path, $output = true)
    {
        if ($output) {
            $this->io->writeError("  - " . InstallOperation::format($package));
        }

$this->filesystem->emptyDirectory($path);
        $this->filesystem->ensureDirectoryExists($path);
        $this->filesystem->rename($this->getFileName($package, $path), $path . '/' . pathinfo(parse_url($package->getDistUrl(), PHP_URL_PATH), PATHINFO_BASENAME));

if ($package->getBinaries()) {
            // Single files can not have a mode set like files in archives
            // so we make sure if the file is a binary that it is executable
            foreach ($package->getBinaries() as $bin) {
                if (file_exists($path . '/' . $bin) && !is_executable($path . '/' . $bin)) {
                    Silencer::call('chmod', $path . '/' . $bin, 0777 & ~umask());
                }
            }
        }

return \React\Promise\resolve();
    }

/**
     * TODO mark private in v3
     * @protected This is public due to PHP 5.3
     *
     * @return void
     */
    public function clearLastCacheWrite(PackageInterface $package)
    {
        if ($this->cache && isset($this->lastCacheWrites[$package->getName()])) {
            $this->cache->remove($this->lastCacheWrites[$package->getName()]);
            unset($this->lastCacheWrites[$package->getName()]);
        }
    }

/**
     * TODO mark private in v3
     * @protected This is public due to PHP 5.3
     *
     * @param string $path
     *
     * @return void
     */
    public function addCleanupPath(PackageInterface $package, $path)
    {
        $this->additionalCleanupPaths[$package->getName()][] = $path;
    }

/**
     * TODO mark private in v3
     * @protected This is public due to PHP 5.3
     *
     * @param string $path
     *
     * @return void
     */
    public function removeCleanupPath(PackageInterface $package, $path)
    {
        if (isset($this->additionalCleanupPaths[$package->getName()])) {
            $idx = array_search($path, $this->additionalCleanupPaths[$package->getName()]);
            if (false !== $idx) {
                unset($this->additionalCleanupPaths[$package->getName()][$idx]);
            }
        }
    }

/**
     * @inheritDoc
     */
    public function update(PackageInterface $initial, PackageInterface $target, $path)
    {
        $this->io->writeError("  - " . UpdateOperation::format($initial, $target) . $this->getInstallOperationAppendix($target, $path));

$promise = $this->remove($initial, $path, false);
        if (!$promise instanceof PromiseInterface) {
            $promise = \React\Promise\resolve();
        }
        $self = $this;
        $io = $this->io;

return $promise->then(function () use ($self, $target, $path) {
            $promise = $self->install($target, $path, false);

return $promise;
        });
    }

/**
     * @inheritDoc
     *
     * @param bool $output
     */
    public function remove(PackageInterface $package, $path, $output = true)
    {
        if ($output) {
            $this->io->writeError("  - " . UninstallOperation::format($package));
        }
        $promise = $this->filesystem->removeDirectoryAsync($path);

return $promise->then(function ($result) use ($path) {
            if (!$result) {
                throw new \RuntimeException('Could not completely delete '.$path.', aborting.');
            }
        });
    }

/**
     * Gets file name for specific package
     *
     * @param  PackageInterface $package package instance
     * @param  string           $path    download path
     * @return string           file name
     */
    protected function getFileName(PackageInterface $package, $path)
    {
        return rtrim($this->config->get('vendor-dir').'/composer/tmp-'.md5($package.spl_object_hash($package)).'.'.pathinfo(parse_url($package->getDistUrl(), PHP_URL_PATH), PATHINFO_EXTENSION), '.');
    }

/**
     * Gets appendix message to add to the "- Upgrading x" string being output on update
     *
     * @param  PackageInterface $package package instance
     * @param  string           $path    download path
     * @return string
     */
    protected function getInstallOperationAppendix(PackageInterface $package, $path)
    {
        return '';
    }

/**
     * Process the download url
     *
     * @param  PackageInterface  $package package the url is coming from
     * @param  string            $url     download url
     * @throws \RuntimeException If any problem with the url
     * @return string            url
     */
    protected function processUrl(PackageInterface $package, $url)
    {
        if (!extension_loaded('openssl') && 0 === strpos($url, 'https:')) {
            throw new \RuntimeException('You must enable the openssl extension to download files via https');
        }

if ($package->getDistReference()) {
            $url = UrlUtil::updateDistReference($this->config, $url, $package->getDistReference());
        }

return $url;
    }

/**
     * @inheritDoc
     * @throws \RuntimeException
     */
    public function getLocalChanges(PackageInterface $package, $targetDir)
    {
        $prevIO = $this->io;

$this->io = new NullIO;
        $this->io->loadConfiguration($this->config);
        $e = null;
        $output = '';

$targetDir = Filesystem::trimTrailingSlash($targetDir);
        try {
            if (is_dir($targetDir.'_compare')) {
                $this->filesystem->removeDirectory($targetDir.'_compare');
            }

$this->download($package, $targetDir.'_compare', null, false);
            $this->httpDownloader->wait();
            $this->install($package, $targetDir.'_compare', false);
            $this->process->wait();

$comparer = new Comparer();
            $comparer->setSource($targetDir.'_compare');
            $comparer->setUpdate($targetDir);
            $comparer->doCompare();
            $output = $comparer->getChanged(true, true);
            $this->filesystem->removeDirectory($targetDir.'_compare');
        } catch (\Exception $e) {
        }

$this->io = $prevIO;

if ($e) {
            throw $e;
        }

return trim($output);
    }
}
<?php

namespace Composer\Downloader;

use Composer\Package\PackageInterface;
use Composer\Pcre\Preg;
use Composer\Util\Svn as SvnUtil;
use Composer\Repository\VcsRepository;
use Composer\Util\ProcessExecutor;
use React\Promise\PromiseInterface;

/**
 * @author Ben Bieker <mail@ben-bieker.de>
 * @author Till Klampaeckel <till@php.net>
 */
class SvnDownloader extends VcsDownloader
{
    /** @var bool */
    protected $cacheCredentials = true;

/**
     * @inheritDoc
     */
    protected function doDownload(PackageInterface $package, $path, $url, PackageInterface $prevPackage = null)
    {
        SvnUtil::cleanEnv();
        $util = new SvnUtil($url, $this->io, $this->config, $this->process);
        if (null === $util->binaryVersion()) {
            throw new \RuntimeException('svn was not found in your PATH, skipping source download');
        }

return \React\Promise\resolve();
    }

/**
     * @inheritDoc
     */
    protected function doInstall(PackageInterface $package, $path, $url)
    {
        SvnUtil::cleanEnv();
        $ref = $package->getSourceReference();

$repo = $package->getRepository();
        if ($repo instanceof VcsRepository) {
            $repoConfig = $repo->getRepoConfig();
            if (array_key_exists('svn-cache-credentials', $repoConfig)) {
                $this->cacheCredentials = (bool) $repoConfig['svn-cache-credentials'];
            }
        }

$this->io->writeError(" Checking out ".$package->getSourceReference());
        $this->execute($package, $url, "svn co", sprintf("%s/%s", $url, $ref), null, $path);

return \React\Promise\resolve();
    }

/**
     * @inheritDoc
     */
    protected function doUpdate(PackageInterface $initial, PackageInterface $target, $path, $url)
    {
        SvnUtil::cleanEnv();
        $ref = $target->getSourceReference();

if (!$this->hasMetadataRepository($path)) {
            throw new \RuntimeException('The .svn directory is missing from '.$path.', see https://getcomposer.org/commit-deps for more information');
        }

$util = new SvnUtil($url, $this->io, $this->config, $this->process);
        $flags = "";
        if (version_compare($util->binaryVersion(), '1.7.0', '>=')) {
            $flags .= ' --ignore-ancestry';
        }

$this->io->writeError(" Checking out " . $ref);
        $this->execute($target, $url, "svn switch" . $flags, sprintf("%s/%s", $url, $ref), $path);

return \React\Promise\resolve();
    }

/**
     * @inheritDoc
     */
    public function getLocalChanges(PackageInterface $package, $path)
    {
        if (!$this->hasMetadataRepository($path)) {
            return null;
        }

$this->process->execute('svn status --ignore-externals', $output, $path);

return Preg::isMatch('{^ *[^X ] +}m', $output) ? $output : null;
    }

/**
     * Execute an SVN command and try to fix up the process with credentials
     * if necessary.
     *
     * @param  string            $baseUrl Base URL of the repository
     * @param  string            $command SVN command to run
     * @param  string            $url     SVN url
     * @param  string            $cwd     Working directory
     * @param  string            $path    Target for a checkout
     * @throws \RuntimeException
     * @return string
     */
    protected function execute(PackageInterface $package, $baseUrl, $command, $url, $cwd = null, $path = null)
    {
        $util = new SvnUtil($baseUrl, $this->io, $this->config, $this->process);
        $util->setCacheCredentials($this->cacheCredentials);
        try {
            return $util->execute($command, $url, $cwd, $path, $this->io->isVerbose());
        } catch (\RuntimeException $e) {
            throw new \RuntimeException(
                $package->getPrettyName().' could not be downloaded, '.$e->getMessage()
            );
        }
    }

/**
     * @inheritDoc
     */
    protected function cleanChanges(PackageInterface $package, $path, $update)
    {
        if (!$changes = $this->getLocalChanges($package, $path)) {
            return \React\Promise\resolve();
        }

if (!$this->io->isInteractive()) {
            if (true === $this->config->get('discard-changes')) {
                return $this->discardChanges($path);
            }

return parent::cleanChanges($package, $path, $update);
        }

$changes = array_map(function ($elem) {
            return '    '.$elem;
        }, Preg::split('{\s*\r?\n\s*}', $changes));
        $countChanges = count($changes);
        $this->io->writeError(sprintf('    <error>'.$package->getPrettyName().' has modified file%s:</error>', $countChanges === 1 ? '' : 's'));
        $this->io->writeError(array_slice($changes, 0, 10));
        if ($countChanges > 10) {
            $remainingChanges = $countChanges - 10;
            $this->io->writeError(
                sprintf(
                    '    <info>'.$remainingChanges.' more file%s modified, choose "v" to view the full list</info>',
                    $remainingChanges === 1 ? '' : 's'
                )
            );
        }

while (true) {
            switch ($this->io->ask('    <info>Discard changes [y,n,v,?]?</info> ', '?')) {
                case 'y':
                    $this->discardChanges($path);
                    break 2;

case 'n':
                    throw new \RuntimeException('Update aborted');

case 'v':
                    $this->io->writeError($changes);
                    break;

case '?':
                default:
                    $this->io->writeError(array(
                        '    y - discard changes and apply the '.($update ? 'update' : 'uninstall'),
                        '    n - abort the '.($update ? 'update' : 'uninstall').' and let you manually clean things up',
                        '    v - view modified files',
                        '    ? - print help',
                    ));
                    break;
            }
        }

return \React\Promise\resolve();
    }

/**
     * @inheritDoc
     */
    protected function getCommitLogs($fromReference, $toReference, $path)
    {
        if (Preg::isMatch('{@(\d+)$}', $fromReference) && Preg::isMatch('{@(\d+)$}', $toReference)) {
            // retrieve the svn base url from the checkout folder
            $command = sprintf('svn info --non-interactive --xml -- %s', ProcessExecutor::escape($path));
            if (0 !== $this->process->execute($command, $output, $path)) {
                throw new \RuntimeException(
                    'Failed to execute ' . $command . "\n\n" . $this->process->getErrorOutput()
                );
            }

$urlPattern = '#<url>(.*)</url>#';
            if (Preg::isMatch($urlPattern, $output, $matches)) {
                $baseUrl = $matches[1];
            } else {
                throw new \RuntimeException(
                    'Unable to determine svn url for path '. $path
                );
            }

// strip paths from references and only keep the actual revision
            $fromRevision = Preg::replace('{.*@(\d+)$}', '$1', $fromReference);
            $toRevision = Preg::replace('{.*@(\d+)$}', '$1', $toReference);

$command = sprintf('svn log -r%s:%s --incremental', ProcessExecutor::escape($fromRevision), ProcessExecutor::escape($toRevision));

$util = new SvnUtil($baseUrl, $this->io, $this->config, $this->process);
            $util->setCacheCredentials($this->cacheCredentials);
            try {
                return $util->executeLocal($command, $path, null, $this->io->isVerbose());
            } catch (\RuntimeException $e) {
                throw new \RuntimeException(
                    'Failed to execute ' . $command . "\n\n".$e->getMessage()
                );
            }
        }

return "Could not retrieve changes between $fromReference and $toReference due to missing revision information";
    }

/**
     * @param string $path
     *
     * @return PromiseInterface
     */
    protected function discardChanges($path)
    {
        if (0 !== $this->process->execute('svn revert -R .', $output, $path)) {
            throw new \RuntimeException("Could not reset changes\n\n:".$this->process->getErrorOutput());
        }

return \React\Promise\resolve();
    }

/**
     * @inheritDoc
     */
    protected function hasMetadataRepository($path)
    {
        return is_dir($path.'/.svn');
    }
}
<?php

namespace Composer\Downloader;

use Composer\Package\PackageInterface;

/**
 * DVCS Downloader interface.
 *
 * @author James Titcumb <james@asgrim.com>
 */
interface DvcsDownloaderInterface
{
    /**
     * Checks for unpushed changes to a current branch
     *
     * @param  PackageInterface $package package directory
     * @param  string           $path    package directory
     * @return string|null      changes or null
     */
    public function getUnpushedChanges(PackageInterface $package, $path);
}
<?php

namespace Composer\Downloader;

use Composer\Package\PackageInterface;
use Composer\IO\IOInterface;
use Composer\Pcre\Preg;
use Composer\Util\Filesystem;
use Composer\Exception\IrrecoverableDownloadException;
use React\Promise\PromiseInterface;

/**
 * Downloaders manager.
 *
 * @author Konstantin Kudryashov <ever.zet@gmail.com>
 */
class DownloadManager
{
    /** @var IOInterface */
    private $io;
    /** @var bool */
    private $preferDist = false;
    /** @var bool */
    private $preferSource;
    /** @var array<string, string> */
    private $packagePreferences = array();
    /** @var Filesystem */
    private $filesystem;
    /** @var array<string, DownloaderInterface> */
    private $downloaders = array();

/**
     * Initializes download manager.
     *
     * @param IOInterface     $io           The Input Output Interface
     * @param bool            $preferSource prefer downloading from source
     * @param Filesystem|null $filesystem   custom Filesystem object
     */
    public function __construct(IOInterface $io, $preferSource = false, Filesystem $filesystem = null)
    {
        $this->io = $io;
        $this->preferSource = $preferSource;
        $this->filesystem = $filesystem ?: new Filesystem();
    }

/**
     * Makes downloader prefer source installation over the dist.
     *
     * @param  bool            $preferSource prefer downloading from source
     * @return DownloadManager
     */
    public function setPreferSource($preferSource)
    {
        $this->preferSource = $preferSource;

return $this;
    }

/**
     * Makes downloader prefer dist installation over the source.
     *
     * @param  bool            $preferDist prefer downloading from dist
     * @return DownloadManager
     */
    public function setPreferDist($preferDist)
    {
        $this->preferDist = $preferDist;

return $this;
    }

/**
     * Sets fine tuned preference settings for package level source/dist selection.
     *
     * @param array<string, string> $preferences array of preferences by package patterns
     *
     * @return DownloadManager
     */
    public function setPreferences(array $preferences)
    {
        $this->packagePreferences = $preferences;

return $this;
    }

/**
     * Sets installer downloader for a specific installation type.
     *
     * @param  string              $type       installation type
     * @param  DownloaderInterface $downloader downloader instance
     * @return DownloadManager
     */
    public function setDownloader($type, DownloaderInterface $downloader)
    {
        $type = strtolower($type);
        $this->downloaders[$type] = $downloader;

return $this;
    }

/**
     * Returns downloader for a specific installation type.
     *
     * @param  string                    $type installation type
     * @throws \InvalidArgumentException if downloader for provided type is not registered
     * @return DownloaderInterface
     */
    public function getDownloader($type)
    {
        $type = strtolower($type);
        if (!isset($this->downloaders[$type])) {
            throw new \InvalidArgumentException(sprintf('Unknown downloader type: %s. Available types: %s.', $type, implode(', ', array_keys($this->downloaders))));
        }

return $this->downloaders[$type];
    }

/**
     * Returns downloader for already installed package.
     *
     * @param  PackageInterface          $package package instance
     * @throws \InvalidArgumentException if package has no installation source specified
     * @throws \LogicException           if specific downloader used to load package with
     *                                           wrong type
     * @return DownloaderInterface|null
     */
    public function getDownloaderForPackage(PackageInterface $package)
    {
        $installationSource = $package->getInstallationSource();

if ('metapackage' === $package->getType()) {
            return null;
        }

if ('dist' === $installationSource) {
            $downloader = $this->getDownloader($package->getDistType());
        } elseif ('source' === $installationSource) {
            $downloader = $this->getDownloader($package->getSourceType());
        } else {
            throw new \InvalidArgumentException(
                'Package '.$package.' does not have an installation source set'
            );
        }

if ($installationSource !== $downloader->getInstallationSource()) {
            throw new \LogicException(sprintf(
                'Downloader "%s" is a %s type downloader and can not be used to download %s for package %s',
                get_class($downloader),
                $downloader->getInstallationSource(),
                $installationSource,
                $package
            ));
        }

return $downloader;
    }

/**
     * @return string
     */
    public function getDownloaderType(DownloaderInterface $downloader)
    {
        return array_search($downloader, $this->downloaders);
    }

/**
     * Downloads package into target dir.
     *
     * @param PackageInterface      $package     package instance
     * @param string                $targetDir   target dir
     * @param PackageInterface|null $prevPackage previous package instance in case of updates
     *
     * @throws \InvalidArgumentException if package have no urls to download from
     * @throws \RuntimeException
     * @return PromiseInterface
     */
    public function download(PackageInterface $package, $targetDir, PackageInterface $prevPackage = null)
    {
        $targetDir = $this->normalizeTargetDir($targetDir);
        $this->filesystem->ensureDirectoryExists(dirname($targetDir));

$sources = $this->getAvailableSources($package, $prevPackage);

$io = $this->io;
        $self = $this;

$download = function ($retry = false) use (&$sources, $io, $package, $self, $targetDir, &$download, $prevPackage) {
            $source = array_shift($sources);
            if ($retry) {
                $io->writeError('    <warning>Now trying to download from ' . $source . '</warning>');
            }
            $package->setInstallationSource($source);

$downloader = $self->getDownloaderForPackage($package);
            if (!$downloader) {
                return \React\Promise\resolve();
            }

$handleError = function ($e) use ($sources, $source, $package, $io, $download) {
                if ($e instanceof \RuntimeException && !$e instanceof IrrecoverableDownloadException) {
                    if (!$sources) {
                        throw $e;
                    }

$io->writeError(
                        '    <warning>Failed to download '.
                        $package->getPrettyName().
                        ' from ' . $source . ': '.
                        $e->getMessage().'</warning>'
                    );

return $download(true);
                }

throw $e;
            };

try {
                $result = $downloader->download($package, $targetDir, $prevPackage);
            } catch (\Exception $e) {
                return $handleError($e);
            }
            if (!$result instanceof PromiseInterface) {
                return \React\Promise\resolve($result);
            }

$res = $result->then(function ($res) {
                return $res;
            }, $handleError);

return $res;
        };

return $download();
    }

/**
     * Prepares an operation execution
     *
     * @param string                $type        one of install/update/uninstall
     * @param PackageInterface      $package     package instance
     * @param string                $targetDir   target dir
     * @param PackageInterface|null $prevPackage previous package instance in case of updates
     *
     * @return PromiseInterface|null
     */
    public function prepare($type, PackageInterface $package, $targetDir, PackageInterface $prevPackage = null)
    {
        $targetDir = $this->normalizeTargetDir($targetDir);
        $downloader = $this->getDownloaderForPackage($package);
        if ($downloader) {
            return $downloader->prepare($type, $package, $targetDir, $prevPackage);
        }

return \React\Promise\resolve();
    }

/**
     * Installs package into target dir.
     *
     * @param PackageInterface $package   package instance
     * @param string           $targetDir target dir
     *
     * @throws \InvalidArgumentException if package have no urls to download from
     * @throws \RuntimeException
     * @return PromiseInterface|null
     */
    public function install(PackageInterface $package, $targetDir)
    {
        $targetDir = $this->normalizeTargetDir($targetDir);
        $downloader = $this->getDownloaderForPackage($package);
        if ($downloader) {
            return $downloader->install($package, $targetDir);
        }

return \React\Promise\resolve();
    }

/**
     * Updates package from initial to target version.
     *
     * @param PackageInterface $initial   initial package version
     * @param PackageInterface $target    target package version
     * @param string           $targetDir target dir
     *
     * @throws \InvalidArgumentException if initial package is not installed
     * @return PromiseInterface|null
     */
    public function update(PackageInterface $initial, PackageInterface $target, $targetDir)
    {
        $targetDir = $this->normalizeTargetDir($targetDir);
        $downloader = $this->getDownloaderForPackage($target);
        $initialDownloader = $this->getDownloaderForPackage($initial);

// no downloaders present means update from metapackage to metapackage, nothing to do
        if (!$initialDownloader && !$downloader) {
            return \React\Promise\resolve();
        }

// if we have a downloader present before, but not after, the package became a metapackage and its files should be removed
        if (!$downloader) {
            return $initialDownloader->remove($initial, $targetDir);
        }

$initialType = $this->getDownloaderType($initialDownloader);
        $targetType = $this->getDownloaderType($downloader);
        if ($initialType === $targetType) {
            try {
                return $downloader->update($initial, $target, $targetDir);
            } catch (\RuntimeException $e) {
                if (!$this->io->isInteractive()) {
                    throw $e;
                }
                $this->io->writeError('<error>    Update failed ('.$e->getMessage().')</error>');
                if (!$this->io->askConfirmation('    Would you like to try reinstalling the package instead [<comment>yes</comment>]? ')) {
                    throw $e;
                }
            }
        }

// if downloader type changed, or update failed and user asks for reinstall,
        // we wipe the dir and do a new install instead of updating it
        $promise = $initialDownloader->remove($initial, $targetDir);
        if ($promise) {
            $self = $this;

return $promise->then(function ($res) use ($self, $target, $targetDir) {
                return $self->install($target, $targetDir);
            });
        }

return $this->install($target, $targetDir);
    }

/**
     * Removes package from target dir.
     *
     * @param PackageInterface $package   package instance
     * @param string           $targetDir target dir
     *
     * @return PromiseInterface|null
     */
    public function remove(PackageInterface $package, $targetDir)
    {
        $targetDir = $this->normalizeTargetDir($targetDir);
        $downloader = $this->getDownloaderForPackage($package);
        if ($downloader) {
            return $downloader->remove($package, $targetDir);
        }

return \React\Promise\resolve();
    }

/**
     * Cleans up a failed operation
     *
     * @param string                $type        one of install/update/uninstall
     * @param PackageInterface      $package     package instance
     * @param string                $targetDir   target dir
     * @param PackageInterface|null $prevPackage previous package instance in case of updates
     *
     * @return PromiseInterface|null
     */
    public function cleanup($type, PackageInterface $package, $targetDir, PackageInterface $prevPackage = null)
    {
        $targetDir = $this->normalizeTargetDir($targetDir);
        $downloader = $this->getDownloaderForPackage($package);
        if ($downloader) {
            return $downloader->cleanup($type, $package, $targetDir, $prevPackage);
        }

return \React\Promise\resolve();
    }

/**
     * Determines the install preference of a package
     *
     * @param PackageInterface $package package instance
     *
     * @return string
     */
    protected function resolvePackageInstallPreference(PackageInterface $package)
    {
        foreach ($this->packagePreferences as $pattern => $preference) {
            $pattern = '{^'.str_replace('\\*', '.*', preg_quote($pattern)).'$}i';
            if (Preg::isMatch($pattern, $package->getName())) {
                if ('dist' === $preference || (!$package->isDev() && 'auto' === $preference)) {
                    return 'dist';
                }

return 'source';
            }
        }

return $package->isDev() ? 'source' : 'dist';
    }

/**
     * @return string[]
     * @phpstan-return array<'dist'|'source'>&non-empty-array
     */
    private function getAvailableSources(PackageInterface $package, PackageInterface $prevPackage = null)
    {
        $sourceType = $package->getSourceType();
        $distType = $package->getDistType();

// add source before dist by default
        $sources = array();
        if ($sourceType) {
            $sources[] = 'source';
        }
        if ($distType) {
            $sources[] = 'dist';
        }

if (empty($sources)) {
            throw new \InvalidArgumentException('Package '.$package.' must have a source or dist specified');
        }

if (
            $prevPackage
            // if we are updating, we want to keep the same source as the previously installed package (if available in the new one)
            && in_array($prevPackage->getInstallationSource(), $sources, true)
            // unless the previous package was stable dist (by default) and the new package is dev, then we allow the new default to take over
            && !(!$prevPackage->isDev() && $prevPackage->getInstallationSource() === 'dist' && $package->isDev())
        ) {
            $prevSource = $prevPackage->getInstallationSource();
            usort($sources, function ($a, $b) use ($prevSource) {
                return $a === $prevSource ? -1 : 1;
            });

return $sources;
        }

// reverse sources in case dist is the preferred source for this package
        if (!$this->preferSource && ($this->preferDist || 'dist' === $this->resolvePackageInstallPreference($package))) {
            $sources = array_reverse($sources);
        }

return $sources;
    }

/**
     * Downloaders expect a /path/to/dir without trailing slash
     *
     * If any Installer provides a path with a trailing slash, this can cause bugs so make sure we remove them
     *
     * @param string $dir
     *
     * @return string
     */
    private function normalizeTargetDir($dir)
    {
        if ($dir === '\\' || $dir === '/') {
            return $dir;
        }

return rtrim($dir, '\\/');
    }
}
<?php

namespace Composer\Downloader;

use Composer\Package\PackageInterface;

/**
 * ChangeReport interface.
 *
 * @author Sascha Egerer <sascha.egerer@dkd.de>
 */
interface ChangeReportInterface
{
    /**
     * Checks for changes to the local copy
     *
     * @param  PackageInterface $package package instance
     * @param  string           $path    package directory
     * @return string|null      changes or null
     */
    public function getLocalChanges(PackageInterface $package, $path);
}
<?php

namespace Composer\Downloader;

class MaxFileSizeExceededException extends TransportException
{
}
<?php

namespace Composer\Downloader;

use Composer\Package\PackageInterface;

/**
 * Downloader for phar files
 *
 * @author Kirill chEbba Chebunin <iam@chebba.org>
 */
class PharDownloader extends ArchiveDownloader
{
    /**
     * @inheritDoc
     */
    protected function extract(PackageInterface $package, $file, $path)
    {
        // Can throw an UnexpectedValueException
        $archive = new \Phar($file);
        $archive->extractTo($path, null, true);
        /* TODO: handle openssl signed phars
         * https://github.com/composer/composer/pull/33#issuecomment-2250768
         * https://github.com/koto/phar-util
         * http://blog.kotowicz.net/2010/08/hardening-php-how-to-securely-include.html
         */

return \React\Promise\resolve();
    }
}
<?php

namespace Composer\Downloader;

use Composer\Package\PackageInterface;

/**
 * Downloader for tar files: tar, tar.gz or tar.bz2
 *
 * @author Kirill chEbba Chebunin <iam@chebba.org>
 */
class TarDownloader extends ArchiveDownloader
{
    /**
     * @inheritDoc
     */
    protected function extract(PackageInterface $package, $file, $path)
    {
        // Can throw an UnexpectedValueException
        $archive = new \PharData($file);
        $archive->extractTo($path, null, true);

return \React\Promise\resolve();
    }
}
<?php

namespace Composer\Downloader;

use Composer\Config;
use Composer\IO\IOInterface;
use Composer\Package\PackageInterface;
use Composer\Pcre\Preg;
use Composer\Util\Filesystem;
use Composer\Util\Git as GitUtil;
use Composer\Util\Url;
use Composer\Util\Platform;
use Composer\Util\ProcessExecutor;
use Composer\Cache;
use React\Promise\PromiseInterface;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class GitDownloader extends VcsDownloader implements DvcsDownloaderInterface
{
    /**
     * @var bool[]
     * @phpstan-var array<string, bool>
     */
    private $hasStashedChanges = array();
    /**
     * @var bool[]
     * @phpstan-var array<string, bool>
     */
    private $hasDiscardedChanges = array();
    /**
     * @var GitUtil
     */
    private $gitUtil;
    /**
     * @var array
     * @phpstan-var array<int, array<string, bool>>
     */
    private $cachedPackages = array();

public function __construct(IOInterface $io, Config $config, ProcessExecutor $process = null, Filesystem $fs = null)
    {
        parent::__construct($io, $config, $process, $fs);
        $this->gitUtil = new GitUtil($this->io, $this->config, $this->process, $this->filesystem);
    }

/**
     * @inheritDoc
     */
    protected function doDownload(PackageInterface $package, $path, $url, PackageInterface $prevPackage = null)
    {
        GitUtil::cleanEnv();

$cachePath = $this->config->get('cache-vcs-dir').'/'.Preg::replace('{[^a-z0-9.]}i', '-', $url).'/';
        $gitVersion = GitUtil::getVersion($this->process);

// --dissociate option is only available since git 2.3.0-rc0
        if ($gitVersion && version_compare($gitVersion, '2.3.0-rc0', '>=') && Cache::isUsable($cachePath)) {
            $this->io->writeError("  - Syncing <info>" . $package->getName() . "</info> (<comment>" . $package->getFullPrettyVersion() . "</comment>) into cache");
            $this->io->writeError(sprintf('    Cloning to cache at %s', ProcessExecutor::escape($cachePath)), true, IOInterface::DEBUG);
            $ref = $package->getSourceReference();
            if ($this->gitUtil->fetchRefOrSyncMirror($url, $cachePath, $ref) && is_dir($cachePath)) {
                $this->cachedPackages[$package->getId()][$ref] = true;
            }
        } elseif (null === $gitVersion) {
            throw new \RuntimeException('git was not found in your PATH, skipping source download');
        }

return \React\Promise\resolve();
    }

/**
     * @inheritDoc
     */
    protected function doInstall(PackageInterface $package, $path, $url)
    {
        GitUtil::cleanEnv();
        $path = $this->normalizePath($path);
        $cachePath = $this->config->get('cache-vcs-dir').'/'.Preg::replace('{[^a-z0-9.]}i', '-', $url).'/';
        $ref = $package->getSourceReference();
        $flag = Platform::isWindows() ? '/D ' : '';

if (!empty($this->cachedPackages[$package->getId()][$ref])) {
            $msg = "Cloning ".$this->getShortHash($ref).' from cache';

$cloneFlags = '--dissociate --reference %cachePath% ';
            $transportOptions = $package->getTransportOptions();
            if (isset($transportOptions['git']['single_use_clone']) && $transportOptions['git']['single_use_clone']) {
                $cloneFlags = '';
            }

$command =
                'git clone --no-checkout %cachePath% %path% ' . $cloneFlags
                . '&& cd '.$flag.'%path% '
                . '&& git remote set-url origin -- %sanitizedUrl% && git remote add composer -- %sanitizedUrl%';
        } else {
            $msg = "Cloning ".$this->getShortHash($ref);
            $command = 'git clone --no-checkout -- %url% %path% && cd '.$flag.'%path% && git remote add composer -- %url% && git fetch composer && git remote set-url origin -- %sanitizedUrl% && git remote set-url composer -- %sanitizedUrl%';
            if (Platform::getEnv('COMPOSER_DISABLE_NETWORK')) {
                throw new \RuntimeException('The required git reference for '.$package->getName().' is not in cache and network is disabled, aborting');
            }
        }

$this->io->writeError($msg);

$commandCallable = function ($url) use ($path, $command, $cachePath) {
            return str_replace(
                array('%url%', '%path%', '%cachePath%', '%sanitizedUrl%'),
                array(
                    ProcessExecutor::escape($url),
                    ProcessExecutor::escape($path),
                    ProcessExecutor::escape($cachePath),
                    ProcessExecutor::escape(Preg::replace('{://([^@]+?):(.+?)@}', '://', $url)),
                ),
                $command
            );
        };

$this->gitUtil->runCommand($commandCallable, $url, $path, true);
        $sourceUrl = $package->getSourceUrl();
        if ($url !== $sourceUrl && $sourceUrl !== null) {
            $this->updateOriginUrl($path, $sourceUrl);
        } else {
            $this->setPushUrl($path, $url);
        }

if ($newRef = $this->updateToCommit($path, $ref, $package->getPrettyVersion(), $package->getReleaseDate())) {
            if ($package->getDistReference() === $package->getSourceReference()) {
                $package->setDistReference($newRef);
            }
            $package->setSourceReference($newRef);
        }

return \React\Promise\resolve();
    }

/**
     * @inheritDoc
     */
    protected function doUpdate(PackageInterface $initial, PackageInterface $target, $path, $url)
    {
        GitUtil::cleanEnv();
        $path = $this->normalizePath($path);
        if (!$this->hasMetadataRepository($path)) {
            throw new \RuntimeException('The .git directory is missing from '.$path.', see https://getcomposer.org/commit-deps for more information');
        }

$cachePath = $this->config->get('cache-vcs-dir').'/'.Preg::replace('{[^a-z0-9.]}i', '-', $url).'/';
        $ref = $target->getSourceReference();

if (!empty($this->cachedPackages[$target->getId()][$ref])) {
            $msg = "Checking out ".$this->getShortHash($ref).' from cache';
            $command = '(git rev-parse --quiet --verify %ref% || (git remote set-url composer -- %cachePath% && git fetch composer && git fetch --tags composer)) && git remote set-url composer -- %sanitizedUrl%';
        } else {
            $msg = "Checking out ".$this->getShortHash($ref);
            $command = '(git remote set-url composer -- %url% && git rev-parse --quiet --verify %ref% || (git fetch composer && git fetch --tags composer)) && git remote set-url composer -- %sanitizedUrl%';
            if (Platform::getEnv('COMPOSER_DISABLE_NETWORK')) {
                throw new \RuntimeException('The required git reference for '.$target->getName().' is not in cache and network is disabled, aborting');
            }
        }

$this->io->writeError($msg);

$commandCallable = function ($url) use ($ref, $command, $cachePath) {
            return str_replace(
                array('%url%', '%ref%', '%cachePath%', '%sanitizedUrl%'),
                array(
                    ProcessExecutor::escape($url),
                    ProcessExecutor::escape($ref.'^{commit}'),
                    ProcessExecutor::escape($cachePath),
                    ProcessExecutor::escape(Preg::replace('{://([^@]+?):(.+?)@}', '://', $url)),
                ),
                $command
            );
        };

$this->gitUtil->runCommand($commandCallable, $url, $path);
        if ($newRef = $this->updateToCommit($path, $ref, $target->getPrettyVersion(), $target->getReleaseDate())) {
            if ($target->getDistReference() === $target->getSourceReference()) {
                $target->setDistReference($newRef);
            }
            $target->setSourceReference($newRef);
        }

$updateOriginUrl = false;
        if (
            0 === $this->process->execute('git remote -v', $output, $path)
            && Preg::isMatch('{^origin\s+(?P<url>\S+)}m', $output, $originMatch)
            && Preg::isMatch('{^composer\s+(?P<url>\S+)}m', $output, $composerMatch)
        ) {
            if ($originMatch['url'] === $composerMatch['url'] && $composerMatch['url'] !== $target->getSourceUrl()) {
                $updateOriginUrl = true;
            }
        }
        if ($updateOriginUrl && $target->getSourceUrl() !== null) {
            $this->updateOriginUrl($path, $target->getSourceUrl());
        }

return \React\Promise\resolve();
    }

/**
     * @inheritDoc
     */
    public function getLocalChanges(PackageInterface $package, $path)
    {
        GitUtil::cleanEnv();
        if (!$this->hasMetadataRepository($path)) {
            return null;
        }

$command = 'git status --porcelain --untracked-files=no';
        if (0 !== $this->process->execute($command, $output, $path)) {
            throw new \RuntimeException('Failed to execute ' . $command . "\n\n" . $this->process->getErrorOutput());
        }

return trim($output) ?: null;
    }

/**
     * @return null|string
     */
    public function getUnpushedChanges(PackageInterface $package, $path)
    {
        GitUtil::cleanEnv();
        $path = $this->normalizePath($path);
        if (!$this->hasMetadataRepository($path)) {
            return null;
        }

$command = 'git show-ref --head -d';
        if (0 !== $this->process->execute($command, $output, $path)) {
            throw new \RuntimeException('Failed to execute ' . $command . "\n\n" . $this->process->getErrorOutput());
        }

$refs = trim($output);
        if (!Preg::isMatch('{^([a-f0-9]+) HEAD$}mi', $refs, $match)) {
            // could not match the HEAD for some reason
            return null;
        }

$headRef = $match[1];
        if (!Preg::isMatchAll('{^'.$headRef.' refs/heads/(.+)$}mi', $refs, $matches)) {
            // not on a branch, we are either on a not-modified tag or some sort of detached head, so skip this
            return null;
        }

$candidateBranches = $matches[1];
        // use the first match as branch name for now
        $branch = $candidateBranches[0];
        $unpushedChanges = null;
        $branchNotFoundError = false;

// do two passes, as if we find anything we want to fetch and then re-try
        for ($i = 0; $i <= 1; $i++) {
            $remoteBranches = array();

// try to find matching branch names in remote repos
            foreach ($candidateBranches as $candidate) {
                if (Preg::isMatchAll('{^[a-f0-9]+ refs/remotes/((?:[^/]+)/'.preg_quote($candidate).')$}mi', $refs, $matches)) {
                    foreach ($matches[1] as $match) {
                        $branch = $candidate;
                        $remoteBranches[] = $match;
                    }
                    break;
                }
            }

// if it doesn't exist, then we assume it is an unpushed branch
            // this is bad as we have no reference point to do a diff so we just bail listing
            // the branch as being unpushed
            if (!$remoteBranches) {
                $unpushedChanges = 'Branch ' . $branch . ' could not be found on any remote and appears to be unpushed';
                $branchNotFoundError = true;
            } else {
                // if first iteration found no remote branch but it has now found some, reset $unpushedChanges
                // so we get the real diff output no matter its length
                if ($branchNotFoundError) {
                    $unpushedChanges = null;
                }
                foreach ($remoteBranches as $remoteBranch) {
                    $command = sprintf('git diff --name-status %s...%s --', $remoteBranch, $branch);
                    if (0 !== $this->process->execute($command, $output, $path)) {
                        throw new \RuntimeException('Failed to execute ' . $command . "\n\n" . $this->process->getErrorOutput());
                    }

$output = trim($output);
                    // keep the shortest diff from all remote branches we compare against
                    if ($unpushedChanges === null || strlen($output) < strlen($unpushedChanges)) {
                        $unpushedChanges = $output;
                    }
                }
            }

// first pass and we found unpushed changes, fetch from all remotes to make sure we have up to date
            // remotes and then try again as outdated remotes can sometimes cause false-positives
            if ($unpushedChanges && $i === 0) {
                $this->process->execute('git fetch --all', $output, $path);

// update list of refs after fetching
                $command = 'git show-ref --head -d';
                if (0 !== $this->process->execute($command, $output, $path)) {
                    throw new \RuntimeException('Failed to execute ' . $command . "\n\n" . $this->process->getErrorOutput());
                }
                $refs = trim($output);
            }

// abort after first pass if we didn't find anything
            if (!$unpushedChanges) {
                break;
            }
        }

return $unpushedChanges;
    }

/**
     * @inheritDoc
     */
    protected function cleanChanges(PackageInterface $package, $path, $update)
    {
        GitUtil::cleanEnv();
        $path = $this->normalizePath($path);

$unpushed = $this->getUnpushedChanges($package, $path);
        if ($unpushed && ($this->io->isInteractive() || $this->config->get('discard-changes') !== true)) {
            throw new \RuntimeException('Source directory ' . $path . ' has unpushed changes on the current branch: '."\n".$unpushed);
        }

if (!$changes = $this->getLocalChanges($package, $path)) {
            return \React\Promise\resolve();
        }

if (!$this->io->isInteractive()) {
            $discardChanges = $this->config->get('discard-changes');
            if (true === $discardChanges) {
                return $this->discardChanges($path);
            }
            if ('stash' === $discardChanges) {
                if (!$update) {
                    return parent::cleanChanges($package, $path, $update);
                }

return $this->stashChanges($path);
            }

return parent::cleanChanges($package, $path, $update);
        }

$changes = array_map(function ($elem) {
            return '    '.$elem;
        }, Preg::split('{\s*\r?\n\s*}', $changes));
        $this->io->writeError('    <error>'.$package->getPrettyName().' has modified files:</error>');
        $this->io->writeError(array_slice($changes, 0, 10));
        if (count($changes) > 10) {
            $this->io->writeError('    <info>' . (count($changes) - 10) . ' more files modified, choose "v" to view the full list</info>');
        }

while (true) {
            switch ($this->io->ask('    <info>Discard changes [y,n,v,d,'.($update ? 's,' : '').'?]?</info> ', '?')) {
                case 'y':
                    $this->discardChanges($path);
                    break 2;

case 's':
                    if (!$update) {
                        goto help;
                    }

$this->stashChanges($path);
                    break 2;

case 'n':
                    throw new \RuntimeException('Update aborted');

case 'v':
                    $this->io->writeError($changes);
                    break;

case 'd':
                    $this->viewDiff($path);
                    break;

case '?':
                default:
                    help :
                    $this->io->writeError(array(
                        '    y - discard changes and apply the '.($update ? 'update' : 'uninstall'),
                        '    n - abort the '.($update ? 'update' : 'uninstall').' and let you manually clean things up',
                        '    v - view modified files',
                        '    d - view local modifications (diff)',
                    ));
                    if ($update) {
                        $this->io->writeError('    s - stash changes and try to reapply them after the update');
                    }
                    $this->io->writeError('    ? - print help');
                    break;
            }
        }

return \React\Promise\resolve();
    }

/**
     * @inheritDoc
     */
    protected function reapplyChanges($path)
    {
        $path = $this->normalizePath($path);
        if (!empty($this->hasStashedChanges[$path])) {
            unset($this->hasStashedChanges[$path]);
            $this->io->writeError('    <info>Re-applying stashed changes</info>');
            if (0 !== $this->process->execute('git stash pop', $output, $path)) {
                throw new \RuntimeException("Failed to apply stashed changes:\n\n".$this->process->getErrorOutput());
            }
        }

unset($this->hasDiscardedChanges[$path]);
    }

/**
     * Updates the given path to the given commit ref
     *
     * @param  string            $path
     * @param  string            $reference
     * @param  string            $branch
     * @param  \DateTime         $date
     * @throws \RuntimeException
     * @return null|string       if a string is returned, it is the commit reference that was checked out if the original could not be found
     */
    protected function updateToCommit($path, $reference, $branch, $date)
    {
        $force = !empty($this->hasDiscardedChanges[$path]) || !empty($this->hasStashedChanges[$path]) ? '-f ' : '';

// This uses the "--" sequence to separate branch from file parameters.
        //
        // Otherwise git tries the branch name as well as file name.
        // If the non-existent branch is actually the name of a file, the file
        // is checked out.
        $template = 'git checkout '.$force.'%s -- && git reset --hard %1$s --';
        $branch = Preg::replace('{(?:^dev-|(?:\.x)?-dev$)}i', '', $branch);

$branches = null;
        if (0 === $this->process->execute('git branch -r', $output, $path)) {
            $branches = $output;
        }

// check whether non-commitish are branches or tags, and fetch branches with the remote name
        $gitRef = $reference;
        if (!Preg::isMatch('{^[a-f0-9]{40}$}', $reference)
            && $branches
            && Preg::isMatch('{^\s+composer/'.preg_quote($reference).'$}m', $branches)
        ) {
            $command = sprintf('git checkout '.$force.'-B %s %s -- && git reset --hard %2$s --', ProcessExecutor::escape($branch), ProcessExecutor::escape('composer/'.$reference));
            if (0 === $this->process->execute($command, $output, $path)) {
                return null;
            }
        }

// try to checkout branch by name and then reset it so it's on the proper branch name
        if (Preg::isMatch('{^[a-f0-9]{40}$}', $reference)) {
            // add 'v' in front of the branch if it was stripped when generating the pretty name
            if (!Preg::isMatch('{^\s+composer/'.preg_quote($branch).'$}m', $branches) && Preg::isMatch('{^\s+composer/v'.preg_quote($branch).'$}m', $branches)) {
                $branch = 'v' . $branch;
            }

$command = sprintf('git checkout %s --', ProcessExecutor::escape($branch));
            $fallbackCommand = sprintf('git checkout '.$force.'-B %s %s --', ProcessExecutor::escape($branch), ProcessExecutor::escape('composer/'.$branch));
            $resetCommand = sprintf('git reset --hard %s --', ProcessExecutor::escape($reference));

if (0 === $this->process->execute("($command || $fallbackCommand) && $resetCommand", $output, $path)) {
                return null;
            }
        }

$command = sprintf($template, ProcessExecutor::escape($gitRef));
        if (0 === $this->process->execute($command, $output, $path)) {
            return null;
        }

// reference was not found (prints "fatal: reference is not a tree: $ref")
        if (false !== strpos($this->process->getErrorOutput(), $reference)) {
            $this->io->writeError('    <warning>'.$reference.' is gone (history was rewritten?)</warning>');
        }

throw new \RuntimeException(Url::sanitize('Failed to execute ' . $command . "\n\n" . $this->process->getErrorOutput()));
    }

/**
     * @param string $path
     * @param string $url
     *
     * @return void
     */
    protected function updateOriginUrl($path, $url)
    {
        $this->process->execute(sprintf('git remote set-url origin -- %s', ProcessExecutor::escape($url)), $output, $path);
        $this->setPushUrl($path, $url);
    }

/**
     * @param string $path
     * @param string $url
     *
     * @return void
     */
    protected function setPushUrl($path, $url)
    {
        // set push url for github projects
        if (Preg::isMatch('{^(?:https?|git)://'.GitUtil::getGitHubDomainsRegex($this->config).'/([^/]+)/([^/]+?)(?:\.git)?$}', $url, $match)) {
            $protocols = $this->config->get('github-protocols');
            $pushUrl = 'git@'.$match[1].':'.$match[2].'/'.$match[3].'.git';
            if (!in_array('ssh', $protocols, true)) {
                $pushUrl = 'https://' . $match[1] . '/'.$match[2].'/'.$match[3].'.git';
            }
            $cmd = sprintf('git remote set-url --push origin -- %s', ProcessExecutor::escape($pushUrl));
            $this->process->execute($cmd, $ignoredOutput, $path);
        }
    }

/**
     * @inheritDoc
     */
    protected function getCommitLogs($fromReference, $toReference, $path)
    {
        $path = $this->normalizePath($path);
        $command = sprintf('git log %s..%s --pretty=format:"%%h - %%an: %%s"'.GitUtil::getNoShowSignatureFlag($this->process), ProcessExecutor::escape($fromReference), ProcessExecutor::escape($toReference));

if (0 !== $this->process->execute($command, $output, $path)) {
            throw new \RuntimeException('Failed to execute ' . $command . "\n\n" . $this->process->getErrorOutput());
        }

return $output;
    }

/**
     * @param string $path
     *
     * @return PromiseInterface
     *
     * @throws \RuntimeException
     */
    protected function discardChanges($path)
    {
        $path = $this->normalizePath($path);
        if (0 !== $this->process->execute('git clean -df && git reset --hard', $output, $path)) {
            throw new \RuntimeException("Could not reset changes\n\n:".$output);
        }

$this->hasDiscardedChanges[$path] = true;

return \React\Promise\resolve();
    }

/**
     * @param string $path
     *
     * @return PromiseInterface
     *
     * @throws \RuntimeException
     */
    protected function stashChanges($path)
    {
        $path = $this->normalizePath($path);
        if (0 !== $this->process->execute('git stash --include-untracked', $output, $path)) {
            throw new \RuntimeException("Could not stash changes\n\n:".$output);
        }

$this->hasStashedChanges[$path] = true;

return \React\Promise\resolve();
    }

/**
     * @param string $path
     *
     * @return void
     *
     * @throws \RuntimeException
     */
    protected function viewDiff($path)
    {
        $path = $this->normalizePath($path);
        if (0 !== $this->process->execute('git diff HEAD', $output, $path)) {
            throw new \RuntimeException("Could not view diff\n\n:".$output);
        }

$this->io->writeError($output);
    }

/**
     * @param string $path
     *
     * @return string
     */
    protected function normalizePath($path)
    {
        if (Platform::isWindows() && strlen($path) > 0) {
            $basePath = $path;
            $removed = array();

while (!is_dir($basePath) && $basePath !== '\\') {
                array_unshift($removed, basename($basePath));
                $basePath = dirname($basePath);
            }

if ($basePath === '\\') {
                return $path;
            }

$path = rtrim(realpath($basePath) . '/' . implode('/', $removed), '/');
        }

return $path;
    }

/**
     * @inheritDoc
     */
    protected function hasMetadataRepository($path)
    {
        $path = $this->normalizePath($path);

return is_dir($path.'/.git');
    }

/**
     * @param  string $reference
     * @return string
     */
    protected function getShortHash($reference)
    {
        if (!$this->io->isVerbose() && Preg::isMatch('{^[0-9a-f]{40}$}', $reference)) {
            return substr($reference, 0, 10);
        }

return $reference;
    }
}
<?php

namespace Composer\Downloader;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class TransportException extends \RuntimeException
{
    /** @var ?array<string> */
    protected $headers;
    /** @var ?string */
    protected $response;
    /** @var ?int */
    protected $statusCode;
    /** @var array<mixed> */
    protected $responseInfo = array();

/**
     * @param array<string> $headers
     *
     * @return void
     */
    public function setHeaders($headers)
    {
        $this->headers = $headers;
    }

/**
     * @return ?array<string>
     */
    public function getHeaders()
    {
        return $this->headers;
    }

/**
     * @param ?string $response
     *
     * @return void
     */
    public function setResponse($response)
    {
        $this->response = $response;
    }

/**
     * @return ?string
     */
    public function getResponse()
    {
        return $this->response;
    }

/**
     * @param ?int $statusCode
     *
     * @return void
     */
    public function setStatusCode($statusCode)
    {
        $this->statusCode = $statusCode;
    }

/**
     * @return ?int
     */
    public function getStatusCode()
    {
        return $this->statusCode;
    }

/**
     * @return array<mixed>
     */
    public function getResponseInfo()
    {
        return $this->responseInfo;
    }

/**
     * @param array<mixed> $responseInfo
     *
     * @return void
     */
    public function setResponseInfo(array $responseInfo)
    {
        $this->responseInfo = $responseInfo;
    }
}
<?php

namespace Composer\Downloader;

use Composer\Config;
use Composer\Package\Dumper\ArrayDumper;
use Composer\Package\PackageInterface;
use Composer\Package\Version\VersionGuesser;
use Composer\Package\Version\VersionParser;
use Composer\Util\ProcessExecutor;
use Composer\IO\IOInterface;
use Composer\Util\Filesystem;
use React\Promise\PromiseInterface;
use Composer\DependencyResolver\Operation\UpdateOperation;
use Composer\DependencyResolver\Operation\InstallOperation;
use Composer\DependencyResolver\Operation\UninstallOperation;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
abstract class VcsDownloader implements DownloaderInterface, ChangeReportInterface, VcsCapableDownloaderInterface
{
    /** @var IOInterface */
    protected $io;
    /** @var Config */
    protected $config;
    /** @var ProcessExecutor */
    protected $process;
    /** @var Filesystem */
    protected $filesystem;
    /** @var array<string, true> */
    protected $hasCleanedChanges = array();

public function __construct(IOInterface $io, Config $config, ProcessExecutor $process = null, Filesystem $fs = null)
    {
        $this->io = $io;
        $this->config = $config;
        $this->process = $process ?: new ProcessExecutor($io);
        $this->filesystem = $fs ?: new Filesystem($this->process);
    }

/**
     * @inheritDoc
     */
    public function getInstallationSource()
    {
        return 'source';
    }

/**
     * @inheritDoc
     */
    public function download(PackageInterface $package, $path, PackageInterface $prevPackage = null)
    {
        if (!$package->getSourceReference()) {
            throw new \InvalidArgumentException('Package '.$package->getPrettyName().' is missing reference information');
        }

$urls = $this->prepareUrls($package->getSourceUrls());

while ($url = array_shift($urls)) {
            try {
                return $this->doDownload($package, $path, $url, $prevPackage);
            } catch (\Exception $e) {
                // rethrow phpunit exceptions to avoid hard to debug bug failures
                if ($e instanceof \PHPUnit\Framework\Exception) {
                    throw $e;
                }
                if ($this->io->isDebug()) {
                    $this->io->writeError('Failed: ['.get_class($e).'] '.$e->getMessage());
                } elseif (count($urls)) {
                    $this->io->writeError('    Failed, trying the next URL');
                }
                if (!count($urls)) {
                    throw $e;
                }
            }
        }

return \React\Promise\resolve();
    }

/**
     * @inheritDoc
     */
    public function prepare($type, PackageInterface $package, $path, PackageInterface $prevPackage = null)
    {
        if ($type === 'update') {
            $this->cleanChanges($prevPackage, $path, true);
            $this->hasCleanedChanges[$prevPackage->getUniqueName()] = true;
        } elseif ($type === 'install') {
            $this->filesystem->emptyDirectory($path);
        } elseif ($type === 'uninstall') {
            $this->cleanChanges($package, $path, false);
        }

return \React\Promise\resolve();
    }

/**
     * @inheritDoc
     */
    public function cleanup($type, PackageInterface $package, $path, PackageInterface $prevPackage = null)
    {
        if ($type === 'update' && isset($this->hasCleanedChanges[$prevPackage->getUniqueName()])) {
            $this->reapplyChanges($path);
            unset($this->hasCleanedChanges[$prevPackage->getUniqueName()]);
        }

return \React\Promise\resolve();
    }

/**
     * @inheritDoc
     */
    public function install(PackageInterface $package, $path)
    {
        if (!$package->getSourceReference()) {
            throw new \InvalidArgumentException('Package '.$package->getPrettyName().' is missing reference information');
        }

$this->io->writeError("  - " . InstallOperation::format($package).': ', false);

$urls = $this->prepareUrls($package->getSourceUrls());
        while ($url = array_shift($urls)) {
            try {
                $this->doInstall($package, $path, $url);
                break;
            } catch (\Exception $e) {
                // rethrow phpunit exceptions to avoid hard to debug bug failures
                if ($e instanceof \PHPUnit\Framework\Exception) {
                    throw $e;
                }
                if ($this->io->isDebug()) {
                    $this->io->writeError('Failed: ['.get_class($e).'] '.$e->getMessage());
                } elseif (count($urls)) {
                    $this->io->writeError('    Failed, trying the next URL');
                }
                if (!count($urls)) {
                    throw $e;
                }
            }
        }

return \React\Promise\resolve();
    }

/**
     * @inheritDoc
     */
    public function update(PackageInterface $initial, PackageInterface $target, $path)
    {
        if (!$target->getSourceReference()) {
            throw new \InvalidArgumentException('Package '.$target->getPrettyName().' is missing reference information');
        }

$this->io->writeError("  - " . UpdateOperation::format($initial, $target).': ', false);

$urls = $this->prepareUrls($target->getSourceUrls());

$exception = null;
        while ($url = array_shift($urls)) {
            try {
                $this->doUpdate($initial, $target, $path, $url);

$exception = null;
                break;
            } catch (\Exception $exception) {
                // rethrow phpunit exceptions to avoid hard to debug bug failures
                if ($exception instanceof \PHPUnit\Framework\Exception) {
                    throw $exception;
                }
                if ($this->io->isDebug()) {
                    $this->io->writeError('Failed: ['.get_class($exception).'] '.$exception->getMessage());
                } elseif (count($urls)) {
                    $this->io->writeError('    Failed, trying the next URL');
                }
            }
        }

// print the commit logs if in verbose mode and VCS metadata is present
        // because in case of missing metadata code would trigger another exception
        if (!$exception && $this->io->isVerbose() && $this->hasMetadataRepository($path)) {
            $message = 'Pulling in changes:';
            $logs = $this->getCommitLogs($initial->getSourceReference(), $target->getSourceReference(), $path);

if (!trim($logs)) {
                $message = 'Rolling back changes:';
                $logs = $this->getCommitLogs($target->getSourceReference(), $initial->getSourceReference(), $path);
            }

if (trim($logs)) {
                $logs = implode("\n", array_map(function ($line) {
                    return '      ' . $line;
                }, explode("\n", $logs)));

// escape angle brackets for proper output in the console
                $logs = str_replace('<', '\<', $logs);

$this->io->writeError('    '.$message);
                $this->io->writeError($logs);
            }
        }

if (!$urls && $exception) {
            throw $exception;
        }

return \React\Promise\resolve();
    }

/**
     * @inheritDoc
     */
    public function remove(PackageInterface $package, $path)
    {
        $this->io->writeError("  - " . UninstallOperation::format($package));

$promise = $this->filesystem->removeDirectoryAsync($path);

/**
     * @inheritDoc
     */
    public function getVcsReference(PackageInterface $package, $path)
    {
        $parser = new VersionParser;
        $guesser = new VersionGuesser($this->config, $this->process, $parser);
        $dumper = new ArrayDumper;

$packageConfig = $dumper->dump($package);
        if ($packageVersion = $guesser->guessVersion($packageConfig, $path)) {
            return $packageVersion['commit'];
        }

return null;
    }

/**
     * Prompt the user to check if changes should be stashed/removed or the operation aborted
     *
     * @param  PackageInterface  $package
     * @param  string            $path
     * @param  bool              $update  if true (update) the changes can be stashed and reapplied after an update,
     *                                    if false (remove) the changes should be assumed to be lost if the operation is not aborted
     *
     * @return PromiseInterface
     *
     * @throws \RuntimeException in case the operation must be aborted
     */
    protected function cleanChanges(PackageInterface $package, $path, $update)
    {
        // the default implementation just fails if there are any changes, override in child classes to provide stash-ability
        if (null !== $this->getLocalChanges($package, $path)) {
            throw new \RuntimeException('Source directory ' . $path . ' has uncommitted changes.');
        }

return \React\Promise\resolve();
    }

/**
     * Reapply previously stashes changes if applicable, only called after an update (regardless if successful or not)
     *
     * @param string $path
     *
     * @return void
     *
     * @throws \RuntimeException in case the operation must be aborted or the patch does not apply cleanly
     */
    protected function reapplyChanges($path)
    {
    }

/**
     * Downloads data needed to run an install/update later
     *
     * @param PackageInterface      $package     package instance
     * @param string                $path        download path
     * @param string                $url         package url
     * @param PackageInterface|null $prevPackage previous package (in case of an update)
     *
     * @return PromiseInterface|null
     */
    abstract protected function doDownload(PackageInterface $package, $path, $url, PackageInterface $prevPackage = null);

/**
     * Downloads specific package into specific folder.
     *
     * @param PackageInterface $package package instance
     * @param string           $path    download path
     * @param string           $url     package url
     *
     * @return PromiseInterface|null
     */
    abstract protected function doInstall(PackageInterface $package, $path, $url);

/**
     * Updates specific package in specific folder from initial to target version.
     *
     * @param PackageInterface $initial initial package
     * @param PackageInterface $target  updated package
     * @param string           $path    download path
     * @param string           $url     package url
     *
     * @return PromiseInterface|null
     */
    abstract protected function doUpdate(PackageInterface $initial, PackageInterface $target, $path, $url);

/**
     * Fetches the commit logs between two commits
     *
     * @param  string $fromReference the source reference
     * @param  string $toReference   the target reference
     * @param  string $path          the package path
     * @return string
     */
    abstract protected function getCommitLogs($fromReference, $toReference, $path);

/**
     * Checks if VCS metadata repository has been initialized
     * repository example: .git|.svn|.hg
     *
     * @param  string $path
     * @return bool
     */
    abstract protected function hasMetadataRepository($path);

/**
     * @param string[] $urls
     *
     * @return string[]
     */
    private function prepareUrls(array $urls)
    {
        foreach ($urls as $index => $url) {
            if (Filesystem::isLocalPath($url)) {
                // realpath() below will not understand
                // url that starts with "file://"
                $fileProtocol = 'file://';
                $isFileProtocol = false;
                if (0 === strpos($url, $fileProtocol)) {
                    $url = substr($url, strlen($fileProtocol));
                    $isFileProtocol = true;
                }

// realpath() below will not understand %20 spaces etc.
                if (false !== strpos($url, '%')) {
                    $url = rawurldecode($url);
                }

$urls[$index] = realpath($url);

if ($isFileProtocol) {
                    $urls[$index] = $fileProtocol . $urls[$index];
                }
            }
        }

return $urls;
    }
}
<?php

namespace Composer\Downloader;

use Composer\Package\PackageInterface;

/**
 * VCS Capable Downloader interface.
 *
 * @author Steve Buzonas <steve@fancyguy.com>
 */
interface VcsCapableDownloaderInterface
{
    /**
     * Gets the VCS Reference for the package at path
     *
     * @param  PackageInterface $package package directory
     * @param  string           $path    package directory
     * @return string|null      reference or null
     */
    public function getVcsReference(PackageInterface $package, $path);
}
<?php

namespace Composer\Question;

use Composer\Pcre\Preg;
use Symfony\Component\Console\Exception\InvalidArgumentException;
use Symfony\Component\Console\Question\Question;

/**
 * Represents a yes/no question
 * Enforces strict responses rather than non-standard answers counting as default
 * Based on Symfony\Component\Console\Question\ConfirmationQuestion
 *
 * @author Theo Tonge <theo@theotonge.co.uk>
 */
class StrictConfirmationQuestion extends Question
{
    /** @var string */
    private $trueAnswerRegex;
    /** @var string */
    private $falseAnswerRegex;

/**
     * Constructor.s
     *
     * @param string $question         The question to ask to the user
     * @param bool   $default          The default answer to return, true or false
     * @param string $trueAnswerRegex  A regex to match the "yes" answer
     * @param string $falseAnswerRegex A regex to match the "no" answer
     */
    public function __construct($question, $default = true, $trueAnswerRegex = '/^y(?:es)?$/i', $falseAnswerRegex = '/^no?$/i')
    {
        parent::__construct($question, (bool) $default);

$this->trueAnswerRegex = $trueAnswerRegex;
        $this->falseAnswerRegex = $falseAnswerRegex;
        $this->setNormalizer($this->getDefaultNormalizer());
        $this->setValidator($this->getDefaultValidator());
    }

/**
     * Returns the default answer normalizer.
     *
     * @return callable
     */
    private function getDefaultNormalizer()
    {
        $default = $this->getDefault();
        $trueRegex = $this->trueAnswerRegex;
        $falseRegex = $this->falseAnswerRegex;

return function ($answer) use ($default, $trueRegex, $falseRegex) {
            if (is_bool($answer)) {
                return $answer;
            }
            if (empty($answer) && !empty($default)) {
                return $default;
            }

if (Preg::isMatch($trueRegex, $answer)) {
                return true;
            }

if (Preg::isMatch($falseRegex, $answer)) {
                return false;
            }

return null;
        };
    }

/**
     * Returns the default answer validator.
     *
     * @return callable
     */
    private function getDefaultValidator()
    {
        return function ($answer) {
            if (!is_bool($answer)) {
                throw new InvalidArgumentException('Please answer yes, y, no, or n.');
            }

return $answer;
        };
    }
}
<?php

namespace Composer\Plugin;

use Composer\EventDispatcher\Event;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * An event for all commands.
 *
 * @author Nils Adermann <naderman@naderman.de>
 */
class CommandEvent extends Event
{
    /**
     * @var string
     */
    private $commandName;

/**
     * @var InputInterface
     */
    private $input;

/**
     * @var OutputInterface
     */
    private $output;

/**
     * Constructor.
     *
     * @param string          $name        The event name
     * @param string          $commandName The command name
     * @param InputInterface  $input
     * @param OutputInterface $output
     * @param mixed[]         $args        Arguments passed by the user
     * @param mixed[]         $flags       Optional flags to pass data not as argument
     */
    public function __construct($name, $commandName, $input, $output, array $args = array(), array $flags = array())
    {
        parent::__construct($name, $args, $flags);
        $this->commandName = $commandName;
        $this->input = $input;
        $this->output = $output;
    }

/**
     * Returns the command input interface
     *
     * @return InputInterface
     */
    public function getInput()
    {
        return $this->input;
    }

/**
     * Retrieves the command output interface
     *
     * @return OutputInterface
     */
    public function getOutput()
    {
        return $this->output;
    }

/**
     * Retrieves the name of the command being run
     *
     * @return string
     */
    public function getCommandName()
    {
        return $this->commandName;
    }
}
<?php

namespace Composer\Plugin;

use Composer\EventDispatcher\Event;
use Composer\Package\PackageInterface;

/**
 * The post file download event.
 *
 * @author Nils Adermann <naderman@naderman.de>
 */
class PostFileDownloadEvent extends Event
{
    /**
     * @var string
     */
    private $fileName;

/**
     * @var string|null
     */
    private $checksum;

/**
     * @var string
     */
    private $url;

/**
     * @var mixed
     */
    private $context;

/**
     * @var string
     */
    private $type;

/**
     * Constructor.
     *
     * @param string      $name     The event name
     * @param string|null $fileName The file name
     * @param string|null $checksum The checksum
     * @param string      $url      The processed url
     * @param string      $type     The type (package or metadata).
     * @param mixed       $context  Additional context for the download.
     */
    public function __construct($name, $fileName, $checksum, $url, $type, $context = null)
    {
        /** @phpstan-ignore-next-line */
        if ($context === null && $type instanceof PackageInterface) {
            $context = $type;
            $type = 'package';
            trigger_error('PostFileDownloadEvent::__construct should receive a $type=package and the package object in $context since Composer 2.1.', E_USER_DEPRECATED);
        }

parent::__construct($name);
        $this->fileName = $fileName;
        $this->checksum = $checksum;
        $this->url = $url;
        $this->context = $context;
        $this->type = $type;
    }

/**
     * Retrieves the target file name location.
     *
     * If this download is of type metadata, null is returned.
     *
     * @return string|null
     */
    public function getFileName()
    {
        return $this->fileName;
    }

/**
     * Gets the checksum.
     *
     * @return string|null
     */
    public function getChecksum()
    {
        return $this->checksum;
    }

/**
     * Gets the processed URL.
     *
     * @return string
     */
    public function getUrl()
    {
        return $this->url;
    }

/**
     * Returns the context of this download, if any.
     *
     * If this download is of type package, the package object is returned. If
     * this download is of type metadata, an array{response: Response, repository: RepositoryInterface} is returned.
     *
     * @return mixed
     */
    public function getContext()
    {
        return $this->context;
    }

/**
     * Get the package.
     *
     * If this download is of type metadata, null is returned.
     *
     * @return \Composer\Package\PackageInterface|null The package.
     * @deprecated Use getContext instead
     */
    public function getPackage()
    {
        trigger_error('PostFileDownloadEvent::getPackage is deprecated since Composer 2.1, use getContext instead.', E_USER_DEPRECATED);
        $context = $this->getContext();

return $context instanceof PackageInterface ? $context : null;
    }

/**
     * Returns the type of this download (package, metadata).
     *
     * @return string
     */
    public function getType()
    {
        return $this->type;
    }
}
<?php

namespace Composer\Plugin;

/**
 * The Plugin Events.
 *
 * @author Nils Adermann <naderman@naderman.de>
 */
class PluginEvents
{
    /**
     * The INIT event occurs after a Composer instance is done being initialized
     *
     * The event listener method receives a
     * Composer\EventDispatcher\Event instance.
     *
     * @var string
     */
    const INIT = 'init';

/**
     * The COMMAND event occurs as a command begins
     *
     * The event listener method receives a
     * Composer\Plugin\CommandEvent instance.
     *
     * @var string
     */
    const COMMAND = 'command';

/**
     * The PRE_FILE_DOWNLOAD event occurs before downloading a file
     *
     * The event listener method receives a
     * Composer\Plugin\PreFileDownloadEvent instance.
     *
     * @var string
     */
    const PRE_FILE_DOWNLOAD = 'pre-file-download';

/**
     * The POST_FILE_DOWNLOAD event occurs after downloading a package dist file
     *
     * The event listener method receives a
     * Composer\Plugin\PostFileDownloadEvent instance.
     *
     * @var string
     */
    const POST_FILE_DOWNLOAD = 'post-file-download';

/**
     * The PRE_COMMAND_RUN event occurs before a command is executed and lets you modify the input arguments/options
     *
     * The event listener method receives a
     * Composer\Plugin\PreCommandRunEvent instance.
     *
     * @var string
     */
    const PRE_COMMAND_RUN = 'pre-command-run';

/**
     * The PRE_POOL_CREATE event occurs before the Pool of packages is created, and lets
     * you filter the list of packages which is going to enter the Solver
     *
     * The event listener method receives a
     * Composer\Plugin\PrePoolCreateEvent instance.
     *
     * @var string
     */
    const PRE_POOL_CREATE = 'pre-pool-create';
}
<?php

namespace Composer\Plugin;

use Composer\EventDispatcher\Event;
use Composer\Util\HttpDownloader;

/**
 * The pre file download event.
 *
 * @author Nils Adermann <naderman@naderman.de>
 */
class PreFileDownloadEvent extends Event
{
    /**
     * @var HttpDownloader
     */
    private $httpDownloader;

/**
     * @var string
     */
    private $processedUrl;

/**
     * @var string|null
     */
    private $customCacheKey;

/**
     * @var string
     */
    private $type;

/**
     * @var mixed
     */
    private $context;

/**
     * @var mixed[]
     */
    private $transportOptions = array();

/**
     * Constructor.
     *
     * @param string         $name           The event name
     * @param HttpDownloader $httpDownloader
     * @param string         $processedUrl
     * @param string         $type
     * @param mixed          $context
     */
    public function __construct($name, HttpDownloader $httpDownloader, $processedUrl, $type, $context = null)
    {
        parent::__construct($name);
        $this->httpDownloader = $httpDownloader;
        $this->processedUrl = $processedUrl;
        $this->type = $type;
        $this->context = $context;
    }

/**
     * @return HttpDownloader
     */
    public function getHttpDownloader()
    {
        return $this->httpDownloader;
    }

/**
     * Retrieves the processed URL that will be downloaded.
     *
     * @return string
     */
    public function getProcessedUrl()
    {
        return $this->processedUrl;
    }

/**
     * Sets the processed URL that will be downloaded.
     *
     * @param string $processedUrl New processed URL
     *
     * @return void
     */
    public function setProcessedUrl($processedUrl)
    {
        $this->processedUrl = $processedUrl;
    }

/**
     * Retrieves a custom package cache key for this download.
     *
     * @return string|null
     */
    public function getCustomCacheKey()
    {
        return $this->customCacheKey;
    }

/**
     * Sets a custom package cache key for this download.
     *
     * @param string|null $customCacheKey New cache key
     *
     * @return void
     */
    public function setCustomCacheKey($customCacheKey)
    {
        $this->customCacheKey = $customCacheKey;
    }

/**
     * Returns the type of this download (package, metadata).
     *
     * @return string
     */
    public function getType()
    {
        return $this->type;
    }

/**
     * Returns the context of this download, if any.
     *
     * If this download is of type package, the package object is returned.
     * If the type is metadata, an array{repository: RepositoryInterface} is returned.
     *
     * @return mixed
     */
    public function getContext()
    {
        return $this->context;
    }

/**
     * Returns transport options for the download.
     *
     * Only available for events with type metadata, for packages set the transport options on the package itself.
     *
     * @return mixed[]
     */
    public function getTransportOptions()
    {
        return $this->transportOptions;
    }

/**
     * Sets transport options for the download.
     *
     * Only available for events with type metadata, for packages set the transport options on the package itself.
     *
     * @param mixed[] $options
     *
     * @return void
     */
    public function setTransportOptions(array $options)
    {
        $this->transportOptions = $options;
    }
}
<?php

namespace Composer\Plugin\Capability;

/**
 * Marker interface for Plugin capabilities.
 * Every new Capability which is added to the Plugin API must implement this interface.
 *
 * @api
 */
interface Capability
{
}
<?php

namespace Composer\Plugin\Capability;

/**
 * Commands Provider Interface
 *
 * This capability will receive an array with 'composer' and 'io' keys as
 * constructor argument. Those contain Composer\Composer and Composer\IO\IOInterface
 * instances. It also contains a 'plugin' key containing the plugin instance that
 * created the capability.
 *
 * @author Jérémy Derussé <jeremy@derusse.com>
 */
interface CommandProvider extends Capability
{
    /**
     * Retrieves an array of commands
     *
     * @return \Composer\Command\BaseCommand[]
     */
    public function getCommands();
}
<?php

namespace Composer\Plugin;

use Composer\EventDispatcher\Event;
use Composer\Repository\RepositoryInterface;
use Composer\DependencyResolver\Request;
use Composer\Package\BasePackage;

/**
 * The pre command run event.
 *
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class PrePoolCreateEvent extends Event
{
    /**
     * @var RepositoryInterface[]
     */
    private $repositories;
    /**
     * @var Request
     */
    private $request;
    /**
     * @var int[] array of stability => BasePackage::STABILITY_* value
     * @phpstan-var array<string, BasePackage::STABILITY_*>
     */
    private $acceptableStabilities;
    /**
     * @var int[] array of package name => BasePackage::STABILITY_* value
     * @phpstan-var array<string, BasePackage::STABILITY_*>
     */
    private $stabilityFlags;
    /**
     * @var array[] of package => version => [alias, alias_normalized]
     * @phpstan-var array<string, array<string, array{alias: string, alias_normalized: string}>>
     */
    private $rootAliases;
    /**
     * @var string[]
     * @phpstan-var array<string, string>
     */
    private $rootReferences;
    /**
     * @var BasePackage[]
     */
    private $packages;
    /**
     * @var BasePackage[]
     */
    private $unacceptableFixedPackages;

/**
     * @param string                $name                   The event name
     * @param RepositoryInterface[] $repositories
     * @param int[]                 $acceptableStabilities  array of stability => BasePackage::STABILITY_* value
     * @param int[]                 $stabilityFlags         array of package name => BasePackage::STABILITY_* value
     * @param array[]               $rootAliases            array of package => version => [alias, alias_normalized]
     * @param string[]              $rootReferences
     * @param BasePackage[]         $packages
     * @param BasePackage[]         $unacceptableFixedPackages
     *
     * @phpstan-param array<string, BasePackage::STABILITY_*> $acceptableStabilities
     * @phpstan-param array<string, BasePackage::STABILITY_*> $stabilityFlags
     * @phpstan-param array<string, array<string, array{alias: string, alias_normalized: string}>> $rootAliases
     * @phpstan-param array<string, string> $rootReferences
     */
    public function __construct($name, array $repositories, Request $request, array $acceptableStabilities, array $stabilityFlags, array $rootAliases, array $rootReferences, array $packages, array $unacceptableFixedPackages)
    {
        parent::__construct($name);

$this->repositories = $repositories;
        $this->request = $request;
        $this->acceptableStabilities = $acceptableStabilities;
        $this->stabilityFlags = $stabilityFlags;
        $this->rootAliases = $rootAliases;
        $this->rootReferences = $rootReferences;
        $this->packages = $packages;
        $this->unacceptableFixedPackages = $unacceptableFixedPackages;
    }

/**
     * @return RepositoryInterface[]
     */
    public function getRepositories()
    {
        return $this->repositories;
    }

/**
     * @return Request
     */
    public function getRequest()
    {
        return $this->request;
    }

/**
     * @return int[] array of stability => BasePackage::STABILITY_* value
     * @phpstan-return array<string, BasePackage::STABILITY_*>
     */
    public function getAcceptableStabilities()
    {
        return $this->acceptableStabilities;
    }

/**
     * @return int[] array of package name => BasePackage::STABILITY_* value
     * @phpstan-return array<string, BasePackage::STABILITY_*>
     */
    public function getStabilityFlags()
    {
        return $this->stabilityFlags;
    }

/**
     * @return array[] of package => version => [alias, alias_normalized]
     * @phpstan-return array<string, array<string, array{alias: string, alias_normalized: string}>>
     */
    public function getRootAliases()
    {
        return $this->rootAliases;
    }

/**
     * @return string[]
     * @phpstan-return array<string, string>
     */
    public function getRootReferences()
    {
        return $this->rootReferences;
    }

/**
     * @return BasePackage[]
     */
    public function getPackages()
    {
        return $this->packages;
    }

/**
     * @return BasePackage[]
     */
    public function getUnacceptableFixedPackages()
    {
        return $this->unacceptableFixedPackages;
    }

/**
     * @param BasePackage[] $packages
     *
     * @return void
     */
    public function setPackages(array $packages)
    {
        $this->packages = $packages;
    }

/**
     * @param BasePackage[] $packages
     *
     * @return void
     */
    public function setUnacceptableFixedPackages(array $packages)
    {
        $this->unacceptableFixedPackages = $packages;
    }
}
<?php

namespace Composer\Plugin;

use Composer\Composer;
use Composer\IO\IOInterface;

/**
 * Plugin interface
 *
 * @author Nils Adermann <naderman@naderman.de>
 */
interface PluginInterface
{
    /**
     * Version number of the internal composer-plugin-api package
     *
     * This is used to denote the API version of Plugin specific
     * features, but is also bumped to a new major if Composer
     * includes a major break in internal APIs which are susceptible
     * to be used by plugins.
     *
     * @var string
     */
    const PLUGIN_API_VERSION = '2.2.0';

/**
     * Apply plugin modifications to Composer
     *
     * @param Composer    $composer
     * @param IOInterface $io
     *
     * @return void
     */
    public function activate(Composer $composer, IOInterface $io);

/**
     * Remove any hooks from Composer
     *
     * This will be called when a plugin is deactivated before being
     * uninstalled, but also before it gets upgraded to a new version
     * so the old one can be deactivated and the new one activated.
     *
     * @param Composer    $composer
     * @param IOInterface $io
     *
     * @return void
     */
    public function deactivate(Composer $composer, IOInterface $io);

/**
     * Prepare the plugin to be uninstalled
     *
     * This will be called after deactivate.
     *
     * @param Composer    $composer
     * @param IOInterface $io
     *
     * @return void
     */
    public function uninstall(Composer $composer, IOInterface $io);
}
<?php

namespace Composer\Plugin;

/**
 * Plugins which need to expose various implementations
 * of the Composer Plugin Capabilities must have their
 * declared Plugin class implementing this interface.
 *
 * @api
 */
interface Capable
{
    /**
     * Method by which a Plugin announces its API implementations, through an array
     * with a special structure.
     *
     * The key must be a string, representing a fully qualified class/interface name
     * which Composer Plugin API exposes.
     * The value must be a string as well, representing the fully qualified class name
     * of the implementing class.
     *
     * @tutorial
     *
     * return array(
     *     'Composer\Plugin\Capability\CommandProvider' => 'My\CommandProvider',
     *     'Composer\Plugin\Capability\Validator'       => 'My\Validator',
     * );
     *
     * @return string[]
     */
    public function getCapabilities();
}
<?php

namespace Composer\Plugin;

use Composer\Composer;
use Composer\EventDispatcher\EventSubscriberInterface;
use Composer\Installer\InstallerInterface;
use Composer\IO\IOInterface;
use Composer\Package\BasePackage;
use Composer\Package\CompletePackage;
use Composer\Package\Package;
use Composer\Package\Version\VersionParser;
use Composer\Pcre\Preg;
use Composer\Repository\RepositoryInterface;
use Composer\Repository\InstalledRepository;
use Composer\Repository\RootPackageRepository;
use Composer\Package\PackageInterface;
use Composer\Package\Link;
use Composer\Semver\Constraint\Constraint;
use Composer\Plugin\Capability\Capability;
use Composer\Util\PackageSorter;

/**
 * Plugin manager
 *
 * @author Nils Adermann <naderman@naderman.de>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class PluginManager
{
    /** @var Composer */
    protected $composer;
    /** @var IOInterface */
    protected $io;
    /** @var ?Composer */
    protected $globalComposer;
    /** @var VersionParser */
    protected $versionParser;
    /** @var bool */
    protected $disablePlugins = false;

/** @var array<PluginInterface> */
    protected $plugins = array();
    /** @var array<string, PluginInterface|InstallerInterface> */
    protected $registeredPlugins = array();

/**
     * @var array<string, bool>|null
     */
    private $allowPluginRules;

/**
     * @var array<string, bool>|null
     */
    private $allowGlobalPluginRules;

/** @var int */
    private static $classCounter = 0;

/**
     * Initializes plugin manager
     *
     * @param IOInterface $io
     * @param Composer    $composer
     * @param Composer    $globalComposer
     * @param bool        $disablePlugins
     */
    public function __construct(IOInterface $io, Composer $composer, Composer $globalComposer = null, $disablePlugins = false)
    {
        $this->io = $io;
        $this->composer = $composer;
        $this->globalComposer = $globalComposer;
        $this->versionParser = new VersionParser();
        $this->disablePlugins = $disablePlugins;

$this->allowPluginRules = $this->parseAllowedPlugins($composer->getConfig()->get('allow-plugins'));
        $this->allowGlobalPluginRules = $this->parseAllowedPlugins($globalComposer !== null ? $globalComposer->getConfig()->get('allow-plugins') : false);
    }

/**
     * Loads all plugins from currently installed plugin packages
     *
     * @return void
     */
    public function loadInstalledPlugins()
    {
        if ($this->disablePlugins) {
            return;
        }

$repo = $this->composer->getRepositoryManager()->getLocalRepository();
        $globalRepo = $this->globalComposer !== null ? $this->globalComposer->getRepositoryManager()->getLocalRepository() : null;
        $this->loadRepository($repo, false);
        if ($globalRepo) {
            $this->loadRepository($globalRepo, true);
        }
    }

/**
     * Deactivate all plugins from currently installed plugin packages
     *
     * @return void
     */
    public function deactivateInstalledPlugins()
    {
        if ($this->disablePlugins) {
            return;
        }

$repo = $this->composer->getRepositoryManager()->getLocalRepository();
        $globalRepo = $this->globalComposer ? $this->globalComposer->getRepositoryManager()->getLocalRepository() : null;
        $this->deactivateRepository($repo, false);
        if ($globalRepo) {
            $this->deactivateRepository($globalRepo, true);
        }
    }

/**
     * Gets all currently active plugin instances
     *
     * @return array<PluginInterface> plugins
     */
    public function getPlugins()
    {
        return $this->plugins;
    }

/**
     * Gets global composer or null when main composer is not fully loaded
     *
     * @return Composer|null
     */
    public function getGlobalComposer()
    {
        return $this->globalComposer;
    }

/**
     * Register a plugin package, activate it etc.
     *
     * If it's of type composer-installer it is registered as an installer
     * instead for BC
     *
     * @param PackageInterface $package
     * @param bool             $failOnMissingClasses By default this silently skips plugins that can not be found, but if set to true it fails with an exception
     * @param bool             $isGlobalPlugin       Set to true to denote plugins which are installed in the global Composer directory
     *
     * @return void
     *
     * @throws \UnexpectedValueException
     */
    public function registerPackage(PackageInterface $package, $failOnMissingClasses = false, $isGlobalPlugin = false)
    {
        if ($this->disablePlugins) {
            return;
        }

if (!$this->isPluginAllowed($package->getName(), $isGlobalPlugin)) {
            $this->io->writeError('Skipped loading "'.$package->getName() . '" '.($isGlobalPlugin ? '(installed globally) ' : '').'as it is not in config.allow-plugins', true, IOInterface::DEBUG);
            return;
        }

if ($package->getType() === 'composer-plugin') {
            $requiresComposer = null;
            foreach ($package->getRequires() as $link) { /** @var Link $link */
                if ('composer-plugin-api' === $link->getTarget()) {
                    $requiresComposer = $link->getConstraint();
                    break;
                }
            }

if (!$requiresComposer) {
                throw new \RuntimeException("Plugin ".$package->getName()." is missing a require statement for a version of the composer-plugin-api package.");
            }

$currentPluginApiVersion = $this->getPluginApiVersion();
            $currentPluginApiConstraint = new Constraint('==', $this->versionParser->normalize($currentPluginApiVersion));

if ($requiresComposer->getPrettyString() === $this->getPluginApiVersion()) {
                $this->io->writeError('<warning>The "' . $package->getName() . '" plugin requires composer-plugin-api '.$this->getPluginApiVersion().', this *WILL* break in the future and it should be fixed ASAP (require ^'.$this->getPluginApiVersion().' instead for example).</warning>');
            } elseif (!$requiresComposer->matches($currentPluginApiConstraint)) {
                $this->io->writeError('<warning>The "' . $package->getName() . '" plugin '.($isGlobalPlugin ? '(installed globally) ' : '').'was skipped because it requires a Plugin API version ("' . $requiresComposer->getPrettyString() . '") that does not match your Composer installation ("' . $currentPluginApiVersion . '"). You may need to run composer update with the "--no-plugins" option.</warning>');

return;
            }

if ($package->getName() === 'symfony/flex' && Preg::isMatch('{^[0-9.]+$}', $package->getVersion()) && version_compare($package->getVersion(), '1.9.8', '<')) {
                $this->io->writeError('<warning>The "' . $package->getName() . '" plugin '.($isGlobalPlugin ? '(installed globally) ' : '').'was skipped because it is not compatible with Composer 2+. Make sure to update it to version 1.9.8 or greater.</warning>');

return;
            }
        }

$oldInstallerPlugin = ($package->getType() === 'composer-installer');

if (isset($this->registeredPlugins[$package->getName()])) {
            return;
        }

$extra = $package->getExtra();
        if (empty($extra['class'])) {
            throw new \UnexpectedValueException('Error while installing '.$package->getPrettyName().', composer-plugin packages should have a class defined in their extra key to be usable.');
        }
        $classes = is_array($extra['class']) ? $extra['class'] : array($extra['class']);

$localRepo = $this->composer->getRepositoryManager()->getLocalRepository();
        $globalRepo = $this->globalComposer !== null ? $this->globalComposer->getRepositoryManager()->getLocalRepository() : null;

$rootPackage = clone $this->composer->getPackage();

// clear files autoload rules from the root package as the root dependencies are not
        // necessarily all present yet when booting this runtime autoloader
        $rootPackageAutoloads = $rootPackage->getAutoload();
        $rootPackageAutoloads['files'] = array();
        $rootPackage->setAutoload($rootPackageAutoloads);
        $rootPackageAutoloads = $rootPackage->getDevAutoload();
        $rootPackageAutoloads['files'] = array();
        $rootPackage->setDevAutoload($rootPackageAutoloads);
        unset($rootPackageAutoloads);

$rootPackageRepo = new RootPackageRepository($rootPackage);
        $installedRepo = new InstalledRepository(array($localRepo, $rootPackageRepo));
        if ($globalRepo) {
            $installedRepo->addRepository($globalRepo);
        }

$autoloadPackages = array($package->getName() => $package);
        $autoloadPackages = $this->collectDependencies($installedRepo, $autoloadPackages, $package);

$generator = $this->composer->getAutoloadGenerator();
        $autoloads = array(array($rootPackage, ''));
        foreach ($autoloadPackages as $autoloadPackage) {
            if ($autoloadPackage === $rootPackage) {
                continue;
            }

$downloadPath = $this->getInstallPath($autoloadPackage, $globalRepo && $globalRepo->hasPackage($autoloadPackage));
            $autoloads[] = array($autoloadPackage, $downloadPath);
        }

$map = $generator->parseAutoloads($autoloads, $rootPackage);
        $classLoader = $generator->createLoader($map, $this->composer->getConfig()->get('vendor-dir'));
        $classLoader->register(false);

foreach ($map['files'] as $fileIdentifier => $file) {
            // exclude laminas/laminas-zendframework-bridge:src/autoload.php as it breaks Composer in some conditions
            // see https://github.com/composer/composer/issues/10349 and https://github.com/composer/composer/issues/10401
            // this hack can be removed once this deprecated package stop being installed
            if ($fileIdentifier === '7e9bd612cc444b3eed788ebbe46263a0') {
                continue;
            }
            \Composer\Autoload\composerRequire($fileIdentifier, $file);
        }

foreach ($classes as $class) {
            if (class_exists($class, false)) {
                $class = trim($class, '\\');
                $path = $classLoader->findFile($class);
                $code = file_get_contents($path);
                $separatorPos = strrpos($class, '\\');
                $className = $class;
                if ($separatorPos) {
                    $className = substr($class, $separatorPos + 1);
                }
                $code = Preg::replace('{^((?:final\s+)?(?:\s*))class\s+('.preg_quote($className).')}mi', '$1class $2_composer_tmp'.self::$classCounter, $code, 1);
                $code = strtr($code, array(
                    '__FILE__' => var_export($path, true),
                    '__DIR__' => var_export(dirname($path), true),
                    '__CLASS__' => var_export($class, true),
                ));
                $code = Preg::replace('/^\s*<\?(php)?/i', '', $code, 1);
                eval($code);
                $class .= '_composer_tmp'.self::$classCounter;
                self::$classCounter++;
            }

if ($oldInstallerPlugin) {
                if (!is_a($class, 'Composer\Installer\InstallerInterface', true)) {
                    throw new \RuntimeException('Could not activate plugin "'.$package->getName().'" as "'.$class.'" does not implement Composer\Installer\InstallerInterface');
                }
                $this->io->writeError('<warning>Loading "'.$package->getName() . '" '.($isGlobalPlugin ? '(installed globally) ' : '').'which is a legacy composer-installer built for Composer 1.x, it is likely to cause issues as you are running Composer 2.x.</warning>');
                $installer = new $class($this->io, $this->composer);
                $this->composer->getInstallationManager()->addInstaller($installer);
                $this->registeredPlugins[$package->getName()] = $installer;
            } elseif (class_exists($class)) {
                if (!is_a($class, 'Composer\Plugin\PluginInterface', true)) {
                    throw new \RuntimeException('Could not activate plugin "'.$package->getName().'" as "'.$class.'" does not implement Composer\Plugin\PluginInterface');
                }
                $plugin = new $class();
                $this->addPlugin($plugin, $isGlobalPlugin, $package);
                $this->registeredPlugins[$package->getName()] = $plugin;
            } elseif ($failOnMissingClasses) {
                throw new \UnexpectedValueException('Plugin '.$package->getName().' could not be initialized, class not found: '.$class);
            }
        }
    }

/**
     * Deactivates a plugin package
     *
     * If it's of type composer-installer it is unregistered from the installers
     * instead for BC
     *
     * @param PackageInterface $package
     *
     * @return void
     *
     * @throws \UnexpectedValueException
     */
    public function deactivatePackage(PackageInterface $package)
    {
        if ($this->disablePlugins) {
            return;
        }

if (!isset($this->registeredPlugins[$package->getName()])) {
            return;
        }

$plugin = $this->registeredPlugins[$package->getName()];
        unset($this->registeredPlugins[$package->getName()]);
        if ($plugin instanceof InstallerInterface) {
            $this->composer->getInstallationManager()->removeInstaller($plugin);
        } else {
            $this->removePlugin($plugin);
        }
    }

/**
     * Uninstall a plugin package
     *
     * If it's of type composer-installer it is unregistered from the installers
     * instead for BC
     *
     * @param PackageInterface $package
     *
     * @return void
     *
     * @throws \UnexpectedValueException
     */
    public function uninstallPackage(PackageInterface $package)
    {
        if ($this->disablePlugins) {
            return;
        }

if (!isset($this->registeredPlugins[$package->getName()])) {
            return;
        }

$plugin = $this->registeredPlugins[$package->getName()];
        if ($plugin instanceof InstallerInterface) {
            $this->deactivatePackage($package);
        } else {
            unset($this->registeredPlugins[$package->getName()]);
            $this->removePlugin($plugin);
            $this->uninstallPlugin($plugin);
        }
    }

/**
     * Returns the version of the internal composer-plugin-api package.
     *
     * @return string
     */
    protected function getPluginApiVersion()
    {
        return PluginInterface::PLUGIN_API_VERSION;
    }

/**
     * Adds a plugin, activates it and registers it with the event dispatcher
     *
     * Ideally plugin packages should be registered via registerPackage, but if you use Composer
     * programmatically and want to register a plugin class directly this is a valid way
     * to do it.
     *
     * @param PluginInterface   $plugin        plugin instance
     * @param bool              $isGlobalPlugin
     * @param ?PackageInterface $sourcePackage Package from which the plugin comes from
     *
     * @return void
     */
    public function addPlugin(PluginInterface $plugin, $isGlobalPlugin = false, PackageInterface $sourcePackage = null)
    {
        if ($sourcePackage === null) {
            trigger_error('Calling PluginManager::addPlugin without $sourcePackage is deprecated, if you are using this please get in touch with us to explain the use case', E_USER_DEPRECATED);
        } elseif (!$this->isPluginAllowed($sourcePackage->getName(), $isGlobalPlugin)) {
            $this->io->writeError('Skipped loading "'.get_class($plugin).' from '.$sourcePackage->getName() . '" '.($isGlobalPlugin ? '(installed globally) ' : '').' as it is not in config.allow-plugins', true, IOInterface::DEBUG);
            return;
        }

$details = array();
        if ($sourcePackage) {
            $details[] = 'from '.$sourcePackage->getName();
        }
        if ($isGlobalPlugin) {
            $details[] = 'installed globally';
        }
        $this->io->writeError('Loading plugin '.get_class($plugin).($details ? ' ('.implode(', ', $details).')' : ''), true, IOInterface::DEBUG);
        $this->plugins[] = $plugin;
        $plugin->activate($this->composer, $this->io);

if ($plugin instanceof EventSubscriberInterface) {
            $this->composer->getEventDispatcher()->addSubscriber($plugin);
        }
    }

/**
     * Removes a plugin, deactivates it and removes any listener the plugin has set on the plugin instance
     *
     * Ideally plugin packages should be deactivated via deactivatePackage, but if you use Composer
     * programmatically and want to deregister a plugin class directly this is a valid way
     * to do it.
     *
     * @param PluginInterface $plugin plugin instance
     *
     * @return void
     */
    public function removePlugin(PluginInterface $plugin)
    {
        $index = array_search($plugin, $this->plugins, true);
        if ($index === false) {
            return;
        }

$this->io->writeError('Unloading plugin '.get_class($plugin), true, IOInterface::DEBUG);
        unset($this->plugins[$index]);
        $plugin->deactivate($this->composer, $this->io);

$this->composer->getEventDispatcher()->removeListener($plugin);
    }

/**
     * Notifies a plugin it is being uninstalled and should clean up
     *
     * Ideally plugin packages should be uninstalled via uninstallPackage, but if you use Composer
     * programmatically and want to deregister a plugin class directly this is a valid way
     * to do it.
     *
     * @param PluginInterface $plugin plugin instance
     *
     * @return void
     */
    public function uninstallPlugin(PluginInterface $plugin)
    {
        $this->io->writeError('Uninstalling plugin '.get_class($plugin), true, IOInterface::DEBUG);
        $plugin->uninstall($this->composer, $this->io);
    }

/**
     * Load all plugins and installers from a repository
     *
     * If a plugin requires another plugin, the required one will be loaded first
     *
     * Note that plugins in the specified repository that rely on events that
     * have fired prior to loading will be missed. This means you likely want to
     * call this method as early as possible.
     *
     * @param RepositoryInterface $repo Repository to scan for plugins to install
     * @param bool                $isGlobalRepo
     *
     * @return void
     *
     * @throws \RuntimeException
     */
    private function loadRepository(RepositoryInterface $repo, $isGlobalRepo)
    {
        $packages = $repo->getPackages();
        $sortedPackages = PackageSorter::sortPackages($packages);
        foreach ($sortedPackages as $package) {
            if (!($package instanceof CompletePackage)) {
                continue;
            }
            if ('composer-plugin' === $package->getType()) {
                $this->registerPackage($package, false, $isGlobalRepo);
            // Backward compatibility
            } elseif ('composer-installer' === $package->getType()) {
                $this->registerPackage($package, false, $isGlobalRepo);
            }
        }
    }

/**
     * Deactivate all plugins and installers from a repository
     *
     * If a plugin requires another plugin, the required one will be deactivated last
     *
     * @param RepositoryInterface $repo Repository to scan for plugins to install
     * @param bool                $isGlobalRepo
     *
     * @return void
     */
    private function deactivateRepository(RepositoryInterface $repo, $isGlobalRepo)
    {
        $packages = $repo->getPackages();
        $sortedPackages = array_reverse(PackageSorter::sortPackages($packages));

foreach ($sortedPackages as $package) {
            if (!($package instanceof CompletePackage)) {
                continue;
            }
            if ('composer-plugin' === $package->getType()) {
                $this->deactivatePackage($package);
            // Backward compatibility
            } elseif ('composer-installer' === $package->getType()) {
                $this->deactivatePackage($package);
            }
        }
    }

/**
     * Recursively generates a map of package names to packages for all deps
     *
     * @param InstalledRepository             $installedRepo Set of local repos
     * @param array<string, PackageInterface> $collected     Current state of the map for recursion
     * @param PackageInterface                $package       The package to analyze
     *
     * @return array<string, PackageInterface> Map of package names to packages
     */
    private function collectDependencies(InstalledRepository $installedRepo, array $collected, PackageInterface $package)
    {
        foreach ($package->getRequires() as $requireLink) {
            foreach ($installedRepo->findPackagesWithReplacersAndProviders($requireLink->getTarget()) as $requiredPackage) {
                if (!isset($collected[$requiredPackage->getName()])) {
                    $collected[$requiredPackage->getName()] = $requiredPackage;
                    $collected = $this->collectDependencies($installedRepo, $collected, $requiredPackage);
                }
            }
        }

return $collected;
    }

/**
     * Retrieves the path a package is installed to.
     *
     * @param PackageInterface $package
     * @param bool             $global  Whether this is a global package
     *
     * @return string Install path
     */
    private function getInstallPath(PackageInterface $package, $global = false)
    {
        if (!$global) {
            return $this->composer->getInstallationManager()->getInstallPath($package);
        }

return $this->globalComposer->getInstallationManager()->getInstallPath($package);
    }

/**
     * @param  PluginInterface   $plugin
     * @param  string            $capability
     * @throws \RuntimeException On empty or non-string implementation class name value
     * @return null|string       The fully qualified class of the implementation or null if Plugin is not of Capable type or does not provide it
     */
    protected function getCapabilityImplementationClassName(PluginInterface $plugin, $capability)
    {
        if (!($plugin instanceof Capable)) {
            return null;
        }

$capabilities = (array) $plugin->getCapabilities();

if (!empty($capabilities[$capability]) && is_string($capabilities[$capability]) && trim($capabilities[$capability])) {
            return trim($capabilities[$capability]);
        }

if (
            array_key_exists($capability, $capabilities)
            && (empty($capabilities[$capability]) || !is_string($capabilities[$capability]) || !trim($capabilities[$capability]))
        ) {
            throw new \UnexpectedValueException('Plugin '.get_class($plugin).' provided invalid capability class name(s), got '.var_export($capabilities[$capability], true));
        }

return null;
    }

/**
     * @template CapabilityClass of Capability
     * @param  PluginInterface               $plugin
     * @param  class-string<CapabilityClass> $capabilityClassName The fully qualified name of the API interface which the plugin may provide
     *                                                            an implementation of.
     * @param  array<mixed>                  $ctorArgs            Arguments passed to Capability's constructor.
     *                                                            Keeping it an array will allow future values to be passed w\o changing the signature.
     * @return null|Capability
     * @phpstan-param class-string<CapabilityClass> $capabilityClassName
     * @phpstan-return null|CapabilityClass
     */
    public function getPluginCapability(PluginInterface $plugin, $capabilityClassName, array $ctorArgs = array())
    {
        if ($capabilityClass = $this->getCapabilityImplementationClassName($plugin, $capabilityClassName)) {
            if (!class_exists($capabilityClass)) {
                throw new \RuntimeException("Cannot instantiate Capability, as class $capabilityClass from plugin ".get_class($plugin)." does not exist.");
            }

$ctorArgs['plugin'] = $plugin;
            $capabilityObj = new $capabilityClass($ctorArgs);

// FIXME these could use is_a and do the check *before* instantiating once drop support for php<5.3.9
            if (!$capabilityObj instanceof Capability || !$capabilityObj instanceof $capabilityClassName) {
                throw new \RuntimeException(
                    'Class ' . $capabilityClass . ' must implement both Composer\Plugin\Capability\Capability and '. $capabilityClassName . '.'
                );
            }

return $capabilityObj;
        }

return null;
    }

/**
     * @template CapabilityClass of Capability
     * @param  class-string<CapabilityClass> $capabilityClassName The fully qualified name of the API interface which the plugin may provide
     *                                                            an implementation of.
     * @param  array<mixed>                  $ctorArgs            Arguments passed to Capability's constructor.
     *                                                            Keeping it an array will allow future values to be passed w\o changing the signature.
     * @return CapabilityClass[]
     */
    public function getPluginCapabilities($capabilityClassName, array $ctorArgs = array())
    {
        $capabilities = array();
        foreach ($this->getPlugins() as $plugin) {
            if ($capability = $this->getPluginCapability($plugin, $capabilityClassName, $ctorArgs)) {
                $capabilities[] = $capability;
            }
        }

return $capabilities;
    }

/**
     * @param  array<string, bool>|bool|null $allowPluginsConfig
     * @return array<string, bool>|null
     */
    private function parseAllowedPlugins($allowPluginsConfig)
    {
        if (null === $allowPluginsConfig) {
            return null;
        }

if (true === $allowPluginsConfig) {
            return array('{}' => true);
        }

if (false === $allowPluginsConfig) {
            return array('{^$}D' => false);
        }

$rules = array();
        foreach ($allowPluginsConfig as $pattern => $allow) {
            $rules[BasePackage::packageNameToRegexp($pattern)] = $allow;
        }

return $rules;
    }

/**
     * @param string $package
     * @param bool $isGlobalPlugin
     * @return bool
     */
    private function isPluginAllowed($package, $isGlobalPlugin)
    {
        static $warned = array();
        $rules = $isGlobalPlugin ? $this->allowGlobalPluginRules : $this->allowPluginRules;

if ($rules === null) {
            if (!$this->io->isInteractive()) {
                if (!isset($warned['all'])) {
                    $this->io->writeError('<warning>For additional security you should declare the allow-plugins config with a list of packages names that are allowed to run code. See https://getcomposer.org/allow-plugins</warning>');
                    $this->io->writeError('<warning>You have until July 2022 to add the setting. Composer will then switch the default behavior to disallow all plugins.</warning>');
                    $warned['all'] = true;
                }

// if no config is defined we allow all plugins for BC
                return true;
            }

// keep going and prompt the user
            $rules = array();
        }

foreach ($rules as $pattern => $allow) {
            if (Preg::isMatch($pattern, $package)) {
                return $allow === true;
            }
        }

if ($package === 'composer/package-versions-deprecated') {
            return false;
        }

if (!isset($warned[$package])) {
            if ($this->io->isInteractive()) {
                $composer = $isGlobalPlugin && $this->globalComposer !== null ? $this->globalComposer : $this->composer;

$this->io->writeError('<warning>'.$package.($isGlobalPlugin ? ' (installed globally)' : '').' contains a Composer plugin which is currently not in your allow-plugins config. See https://getcomposer.org/allow-plugins</warning>');
                while (true) {
                    switch ($answer = $this->io->ask('Do you trust "<info>'.$package.'</info>" to execute code and wish to enable it now? (writes "allow-plugins" to composer.json) [<comment>y,n,d,?</comment>] ', '?')) {
                        case 'y':
                        case 'n':
                        case 'd':
                            $allow = $answer === 'y';

// persist answer in current rules to avoid prompting again if the package gets reloaded
                            if ($isGlobalPlugin) {
                                $this->allowGlobalPluginRules[BasePackage::packageNameToRegexp($package)] = $allow;
                            } else {
                                $this->allowPluginRules[BasePackage::packageNameToRegexp($package)] = $allow;
                            }

// persist answer in composer.json if it wasn't simply discarded
                            if ($answer === 'y' || $answer === 'n') {
                                $composer->getConfig()->getConfigSource()->addConfigSetting('allow-plugins.'.$package, $allow);
                            }

return $allow;

case '?':
                        default:
                            $this->io->writeError(array(
                                'y - add package to allow-plugins in composer.json and let it run immediately',
                                'n - add package (as disallowed) to allow-plugins in composer.json to suppress further prompts',
                                'd - discard this, do not change composer.json and do not allow the plugin to run',
                                '? - print help'
                            ));
                            break;
                    }
                }
            } else {
                $this->io->writeError('<warning>'.$package.($isGlobalPlugin ? ' (installed globally)' : '').' contains a Composer plugin which is blocked by your allow-plugins config. You may add it to the list if you consider it safe. See https://getcomposer.org/allow-plugins</warning>');
                $this->io->writeError('<warning>You can run "composer '.($isGlobalPlugin ? 'global ' : '').'config --no-plugins allow-plugins.'.$package.' [true|false]" to enable it (true) or keep it disabled and suppress this warning (false)</warning>');
            }
            $warned[$package] = true;
        }

return false;
    }
}
<?php

namespace Composer\Plugin;

use Composer\EventDispatcher\Event;
use Symfony\Component\Console\Input\InputInterface;

/**
 * The pre command run event.
 *
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class PreCommandRunEvent extends Event
{
    /**
     * @var InputInterface
     */
    private $input;

/**
     * @var string
     */
    private $command;

/**
     * Constructor.
     *
     * @param string         $name    The event name
     * @param InputInterface $input
     * @param string         $command The command about to be executed
     */
    public function __construct($name, InputInterface $input, $command)
    {
        parent::__construct($name);
        $this->input = $input;
        $this->command = $command;
    }

/**
     * Returns the console input
     *
     * @return InputInterface
     */
    public function getInput()
    {
        return $this->input;
    }

/**
     * Returns the command about to be executed
     *
     * @return string
     */
    public function getCommand()
    {
        return $this->command;
    }
}
<?php

namespace Composer\Util;

use Composer\Pcre\Preg;
use stdClass;

/**
 * Tests URLs against NO_PROXY patterns
 */
class NoProxyPattern
{
    /**
     * @var string[]
     */
    protected $hostNames = array();

/**
     * @var (null|object)[]
     */
    protected $rules = array();

/**
     * @var bool
     */
    protected $noproxy;

/**
     * @param string $pattern NO_PROXY pattern
     */
    public function __construct($pattern)
    {
        $this->hostNames = Preg::split('{[\s,]+}', $pattern, -1, PREG_SPLIT_NO_EMPTY);
        $this->noproxy = empty($this->hostNames) || '*' === $this->hostNames[0];
    }

/**
     * Returns true if a URL matches the NO_PROXY pattern
     *
     * @param string $url
     *
     * @return bool
     */
    public function test($url)
    {
        if ($this->noproxy) {
            return true;
        }

if (!$urlData = $this->getUrlData($url)) {
            return false;
        }

foreach ($this->hostNames as $index => $hostName) {
            if ($this->match($index, $hostName, $urlData)) {
                return true;
            }
        }

return false;
    }

/**
     * Returns false is the url cannot be parsed, otherwise a data object
     *
     * @param string $url
     *
     * @return bool|stdClass
     */
    protected function getUrlData($url)
    {
        if (!$host = parse_url($url, PHP_URL_HOST)) {
            return false;
        }

$port = parse_url($url, PHP_URL_PORT);

if (empty($port)) {
            switch (parse_url($url, PHP_URL_SCHEME)) {
                case 'http':
                    $port = 80;
                    break;
                case 'https':
                    $port = 443;
                    break;
            }
        }

$hostName = $host . ($port ? ':' . $port : '');
        list($host, $port, $err) = $this->splitHostPort($hostName);

if ($err || !$this->ipCheckData($host, $ipdata)) {
            return false;
        }

return $this->makeData($host, $port, $ipdata);
    }

/**
     * Returns true if the url is matched by a rule
     *
     * @param int      $index
     * @param string   $hostName
     * @param stdClass $url
     *
     * @return bool
     */
    protected function match($index, $hostName, $url)
    {
        if (!$rule = $this->getRule($index, $hostName)) {
            // Data must have been misformatted
            return false;
        }

if ($rule->ipdata) {
            // Match ipdata first
            if (!$url->ipdata) {
                return false;
            }

if ($rule->ipdata->netmask) {
                return $this->matchRange($rule->ipdata, $url->ipdata);
            }

$match = $rule->ipdata->ip === $url->ipdata->ip;
        } else {
            // Match host and port
            $haystack = substr($url->name, -strlen($rule->name));
            $match = stripos($haystack, $rule->name) === 0;
        }

if ($match && $rule->port) {
            $match = $rule->port === $url->port;
        }

return $match;
    }

/**
     * Returns true if the target ip is in the network range
     *
     * @param stdClass $network
     * @param stdClass $target
     *
     * @return bool
     */
    protected function matchRange(stdClass $network, stdClass $target)
    {
        $net = unpack('C*', $network->ip);
        $mask = unpack('C*', $network->netmask);
        $ip = unpack('C*', $target->ip);
        if (false === $net) {
            throw new \RuntimeException('Could not parse network IP '.$network->ip);
        }
        if (false === $mask) {
            throw new \RuntimeException('Could not parse netmask '.$network->netmask);
        }
        if (false === $ip) {
            throw new \RuntimeException('Could not parse target IP '.$target->ip);
        }

for ($i = 1; $i < 17; ++$i) {
            if (($net[$i] & $mask[$i]) !== ($ip[$i] & $mask[$i])) {
                return false;
            }
        }

return true;
    }

/**
     * Finds or creates rule data for a hostname
     *
     * @param int    $index
     * @param string $hostName
     *
     * @return null|stdClass Null if the hostname is invalid
     */
    private function getRule($index, $hostName)
    {
        if (array_key_exists($index, $this->rules)) {
            return $this->rules[$index];
        }

$this->rules[$index] = null;
        list($host, $port, $err) = $this->splitHostPort($hostName);

if ($err || !$this->ipCheckData($host, $ipdata, true)) {
            return null;
        }

$this->rules[$index] = $this->makeData($host, $port, $ipdata);

return $this->rules[$index];
    }

/**
     * Creates an object containing IP data if the host is an IP address
     *
     * @param string        $host
     * @param null|stdClass $ipdata      Set by method if IP address found
     * @param bool          $allowPrefix Whether a CIDR prefix-length is expected
     *
     * @return bool False if the host contains invalid data
     */
    private function ipCheckData($host, &$ipdata, $allowPrefix = false)
    {
        $ipdata = null;
        $netmask = null;
        $prefix = null;
        $modified = false;

// Check for a CIDR prefix-length
        if (strpos($host, '/') !== false) {
            list($host, $prefix) = explode('/', $host);

if (!$allowPrefix || !$this->validateInt($prefix, 0, 128)) {
                return false;
            }
            $prefix = (int) $prefix;
            $modified = true;
        }

// See if this is an ip address
        if (!filter_var($host, FILTER_VALIDATE_IP)) {
            return !$modified;
        }

list($ip, $size) = $this->ipGetAddr($host);

if ($prefix !== null) {
            // Check for a valid prefix
            if ($prefix > $size * 8) {
                return false;
            }

list($ip, $netmask) = $this->ipGetNetwork($ip, $size, $prefix);
        }

$ipdata = $this->makeIpData($ip, $size, $netmask);

return true;
    }

/**
     * Returns an array of the IP in_addr and its byte size
     *
     * IPv4 addresses are always mapped to IPv6, which simplifies handling
     * and comparison.
     *
     * @param string $host
     *
     * @return mixed[] in_addr, size
     */
    private function ipGetAddr($host)
    {
        $ip = inet_pton($host);
        $size = strlen($ip);
        $mapped = $this->ipMapTo6($ip, $size);

return array($mapped, $size);
    }

/**
     * Returns the binary network mask mapped to IPv6
     *
     * @param int $prefix CIDR prefix-length
     * @param int $size   Byte size of in_addr
     *
     * @return string
     */
    private function ipGetMask($prefix, $size)
    {
        $mask = '';

if ($ones = floor($prefix / 8)) {
            $mask = str_repeat(chr(255), (int) $ones);
        }

if ($remainder = $prefix % 8) {
            $mask .= chr(0xff ^ (0xff >> $remainder));
        }

$mask = str_pad($mask, $size, chr(0));

return $this->ipMapTo6($mask, $size);
    }

/**
     * Calculates and returns the network and mask
     *
     * @param string $rangeIp IP in_addr
     * @param int    $size    Byte size of in_addr
     * @param int    $prefix  CIDR prefix-length
     *
     * @return string[] network in_addr, binary mask
     */
    private function ipGetNetwork($rangeIp, $size, $prefix)
    {
        $netmask = $this->ipGetMask($prefix, $size);

// Get the network from the address and mask
        $mask = unpack('C*', $netmask);
        $ip = unpack('C*', $rangeIp);
        $net = '';
        if (false === $mask) {
            throw new \RuntimeException('Could not parse netmask '.$netmask);
        }
        if (false === $ip) {
            throw new \RuntimeException('Could not parse range IP '.$rangeIp);
        }

for ($i = 1; $i < 17; ++$i) {
            $net .= chr($ip[$i] & $mask[$i]);
        }

return array($net, $netmask);
    }

/**
     * Maps an IPv4 address to IPv6
     *
     * @param string $binary in_addr
     * @param int    $size   Byte size of in_addr
     *
     * @return string Mapped or existing in_addr
     */
    private function ipMapTo6($binary, $size)
    {
        if ($size === 4) {
            $prefix = str_repeat(chr(0), 10) . str_repeat(chr(255), 2);
            $binary = $prefix . $binary;
        }

return $binary;
    }

/**
     * Creates a rule data object
     *
     * @param string        $host
     * @param int           $port
     * @param null|stdClass $ipdata
     *
     * @return stdClass
     */
    private function makeData($host, $port, $ipdata)
    {
        return (object) array(
            'host' => $host,
            'name' => '.' . ltrim($host, '.'),
            'port' => $port,
            'ipdata' => $ipdata,
        );
    }

/**
     * Creates an ip data object
     *
     * @param string      $ip      in_addr
     * @param int         $size    Byte size of in_addr
     * @param null|string $netmask Network mask
     *
     * @return stdClass
     */
    private function makeIpData($ip, $size, $netmask)
    {
        return (object) array(
            'ip' => $ip,
            'size' => $size,
            'netmask' => $netmask,
        );
    }

/**
     * Splits the hostname into host and port components
     *
     * @param string $hostName
     *
     * @return mixed[] host, port, if there was error
     */
    private function splitHostPort($hostName)
    {
        // host, port, err
        $error = array('', '', true);
        $port = 0;
        $ip6 = '';

// Check for square-bracket notation
        if ($hostName[0] === '[') {
            $index = strpos($hostName, ']');

// The smallest ip6 address is ::
            if (false === $index || $index < 3) {
                return $error;
            }

$ip6 = substr($hostName, 1, $index - 1);
            $hostName = substr($hostName, $index + 1);

if (strpbrk($hostName, '[]') !== false || substr_count($hostName, ':') > 1) {
                return $error;
            }
        }

if (substr_count($hostName, ':') === 1) {
            $index = strpos($hostName, ':');
            $port = substr($hostName, $index + 1);
            $hostName = substr($hostName, 0, $index);

if (!$this->validateInt($port, 1, 65535)) {
                return $error;
            }

$port = (int) $port;
        }

$host = $ip6 . $hostName;

return array($host, $port, false);
    }

/**
     * Wrapper around filter_var FILTER_VALIDATE_INT
     *
     * @param string $int
     * @param int    $min
     * @param int    $max
     *
     * @return bool
     */
    private function validateInt($int, $min, $max)
    {
        $options = array(
            'options' => array(
                'min_range' => $min,
                'max_range' => $max,
            ),
        );

return false !== filter_var($int, FILTER_VALIDATE_INT, $options);
    }
}
<?php

namespace Composer\Util;

use Composer\IO\IOInterface;
use Composer\Pcre\Preg;
use Symfony\Component\Process\Process;
use Symfony\Component\Process\Exception\RuntimeException;
use React\Promise\Promise;
use React\Promise\PromiseInterface;

/**
 * @author Robert Schönthal <seroscho@googlemail.com>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class ProcessExecutor
{
    const STATUS_QUEUED = 1;
    const STATUS_STARTED = 2;
    const STATUS_COMPLETED = 3;
    const STATUS_FAILED = 4;
    const STATUS_ABORTED = 5;

/** @var int */
    protected static $timeout = 300;

/** @var bool */
    protected $captureOutput = false;
    /** @var string */
    protected $errorOutput = '';
    /** @var ?IOInterface */
    protected $io;

/**
     * @phpstan-var array<int, array<string, mixed>>
     */
    private $jobs = array();
    /** @var int */
    private $runningJobs = 0;
    /** @var int */
    private $maxJobs = 10;
    /** @var int */
    private $idGen = 0;
    /** @var bool */
    private $allowAsync = false;

public function __construct(IOInterface $io = null)
    {
        $this->io = $io;
    }

/**
     * runs a process on the commandline
     *
     * @param  string  $command the command to execute
     * @param  mixed   $output  the output will be written into this var if passed by ref
     *                          if a callable is passed it will be used as output handler
     * @param  ?string $cwd     the working directory
     * @return int     statuscode
     */
    public function execute($command, &$output = null, $cwd = null)
    {
        if (func_num_args() > 1) {
            return $this->doExecute($command, $cwd, false, $output);
        }

return $this->doExecute($command, $cwd, false);
    }

/**
     * runs a process on the commandline in TTY mode
     *
     * @param  string  $command the command to execute
     * @param  ?string $cwd     the working directory
     * @return int     statuscode
     */
    public function executeTty($command, $cwd = null)
    {
        if (Platform::isTty()) {
            return $this->doExecute($command, $cwd, true);
        }

return $this->doExecute($command, $cwd, false);
    }

/**
     * @param  string  $command
     * @param  ?string $cwd
     * @param  bool    $tty
     * @param  mixed   $output
     * @return int
     */
    private function doExecute($command, $cwd, $tty, &$output = null)
    {
        $this->outputCommandRun($command, $cwd, false);

// TODO in 2.2, these two checks can be dropped as Symfony 4+ supports them out of the box
        // make sure that null translate to the proper directory in case the dir is a symlink
        // and we call a git command, because msysgit does not handle symlinks properly
        if (null === $cwd && Platform::isWindows() && false !== strpos($command, 'git') && getcwd()) {
            $cwd = realpath(getcwd());
        }
        if (null !== $cwd && !is_dir($cwd)) {
            throw new \RuntimeException('The given CWD for the process does not exist: '.$cwd);
        }

$this->captureOutput = func_num_args() > 3;
        $this->errorOutput = '';

// TODO in v3, commands should be passed in as arrays of cmd + args
        if (method_exists('Symfony\Component\Process\Process', 'fromShellCommandline')) {
            $process = Process::fromShellCommandline($command, $cwd, null, null, static::getTimeout());
        } else {
            /** @phpstan-ignore-next-line */
            $process = new Process($command, $cwd, null, null, static::getTimeout());
        }
        if (!Platform::isWindows() && $tty) {
            try {
                $process->setTty(true);
            } catch (RuntimeException $e) {
                // ignore TTY enabling errors
            }
        }

$callback = is_callable($output) ? $output : array($this, 'outputHandler');
        $process->run($callback);

if ($this->captureOutput && !is_callable($output)) {
            $output = $process->getOutput();
        }

$this->errorOutput = $process->getErrorOutput();

return $process->getExitCode();
    }

/**
     * starts a process on the commandline in async mode
     *
     * @param  string           $command the command to execute
     * @param  string           $cwd     the working directory
     * @return PromiseInterface
     */
    public function executeAsync($command, $cwd = null)
    {
        if (!$this->allowAsync) {
            throw new \LogicException('You must use the ProcessExecutor instance which is part of a Composer\Loop instance to be able to run async processes');
        }

$job = array(
            'id' => $this->idGen++,
            'status' => self::STATUS_QUEUED,
            'command' => $command,
            'cwd' => $cwd,
        );

$resolver = function ($resolve, $reject) use (&$job) {
            $job['status'] = ProcessExecutor::STATUS_QUEUED;
            $job['resolve'] = $resolve;
            $job['reject'] = $reject;
        };

$self = $this;

$canceler = function () use (&$job) {
            if ($job['status'] === ProcessExecutor::STATUS_QUEUED) {
                $job['status'] = ProcessExecutor::STATUS_ABORTED;
            }
            if ($job['status'] !== ProcessExecutor::STATUS_STARTED) {
                return;
            }
            $job['status'] = ProcessExecutor::STATUS_ABORTED;
            try {
                if (defined('SIGINT')) {
                    $job['process']->signal(SIGINT);
                }
            } catch (\Exception $e) {
                // signal can throw in various conditions, but we don't care if it fails
            }
            $job['process']->stop(1);

throw new \RuntimeException('Aborted process');
        };

$promise = new Promise($resolver, $canceler);
        $promise = $promise->then(function () use (&$job, $self) {
            if ($job['process']->isSuccessful()) {
                $job['status'] = ProcessExecutor::STATUS_COMPLETED;
            } else {
                $job['status'] = ProcessExecutor::STATUS_FAILED;
            }

// TODO 3.0 this should be done directly on $this when PHP 5.3 is dropped
            $self->markJobDone();

return $job['process'];
        }, function ($e) use (&$job, $self) {
            $job['status'] = ProcessExecutor::STATUS_FAILED;

$self->markJobDone();

throw $e;
        });
        $this->jobs[$job['id']] = &$job;

if ($this->runningJobs < $this->maxJobs) {
            $this->startJob($job['id']);
        }

return $promise;
    }

/**
     * @param  int  $id
     * @return void
     */
    private function startJob($id)
    {
        $job = &$this->jobs[$id];
        if ($job['status'] !== self::STATUS_QUEUED) {
            return;
        }

// start job
        $job['status'] = self::STATUS_STARTED;
        $this->runningJobs++;

$command = $job['command'];
        $cwd = $job['cwd'];

$this->outputCommandRun($command, $cwd, true);

try {
            // TODO in v3, commands should be passed in as arrays of cmd + args
            if (method_exists('Symfony\Component\Process\Process', 'fromShellCommandline')) {
                $process = Process::fromShellCommandline($command, $cwd, null, null, static::getTimeout());
            } else {
                $process = new Process($command, $cwd, null, null, static::getTimeout());
            }
        } catch (\Exception $e) {
            call_user_func($job['reject'], $e);

return;
        } catch (\Throwable $e) {
            call_user_func($job['reject'], $e);

return;
        }

$job['process'] = $process;

try {
            $process->start();
        } catch (\Exception $e) {
            call_user_func($job['reject'], $e);

return;
        } catch (\Throwable $e) {
            call_user_func($job['reject'], $e);

return;
        }
    }

/**
     * @param  ?int $index job id
     * @return void
     */
    public function wait($index = null)
    {
        while (true) {
            if (!$this->countActiveJobs($index)) {
                return;
            }

usleep(1000);
        }
    }

/**
     * @internal
     *
     * @return void
     */
    public function enableAsync()
    {
        $this->allowAsync = true;
    }

/**
     * @internal
     *
     * @param  ?int $index job id
     * @return int         number of active (queued or started) jobs
     */
    public function countActiveJobs($index = null)
    {
        // tick
        foreach ($this->jobs as $job) {
            if ($job['status'] === self::STATUS_STARTED) {
                if (!$job['process']->isRunning()) {
                    call_user_func($job['resolve'], $job['process']);
                }

$job['process']->checkTimeout();
            }

if ($this->runningJobs < $this->maxJobs) {
                if ($job['status'] === self::STATUS_QUEUED) {
                    $this->startJob($job['id']);
                }
            }
        }

if (null !== $index) {
            return $this->jobs[$index]['status'] < self::STATUS_COMPLETED ? 1 : 0;
        }

$active = 0;
        foreach ($this->jobs as $job) {
            if ($job['status'] < self::STATUS_COMPLETED) {
                $active++;
            } else {
                unset($this->jobs[$job['id']]);
            }
        }

return $active;
    }

/**
     * @private
     *
     * @return void
     */
    public function markJobDone()
    {
        $this->runningJobs--;
    }

/**
     * @param  ?string  $output
     * @return string[]
     */
    public function splitLines($output)
    {
        $output = trim((string) $output);

return $output === '' ? array() : Preg::split('{\r?\n}', $output);
    }

/**
     * Get any error output from the last command
     *
     * @return string
     */
    public function getErrorOutput()
    {
        return $this->errorOutput;
    }

/**
     * @private
     *
     * @param Process::ERR|Process::OUT $type
     * @param string                    $buffer
     *
     * @return void
     */
    public function outputHandler($type, $buffer)
    {
        if ($this->captureOutput) {
            return;
        }

if (null === $this->io) {
            echo $buffer;

return;
        }

if (Process::ERR === $type) {
            $this->io->writeErrorRaw($buffer, false);
        } else {
            $this->io->writeRaw($buffer, false);
        }
    }

/**
     * @return int the timeout in seconds
     */
    public static function getTimeout()
    {
        return static::$timeout;
    }

/**
     * @param  int  $timeout the timeout in seconds
     * @return void
     */
    public static function setTimeout($timeout)
    {
        static::$timeout = $timeout;
    }

/**
     * Escapes a string to be used as a shell argument.
     *
     * @param string|false|null $argument The argument that will be escaped
     *
     * @return string The escaped argument
     */
    public static function escape($argument)
    {
        return self::escapeArgument($argument);
    }

/**
     * @param string  $command
     * @param ?string $cwd
     * @param bool    $async
     * @return void
     */
    private function outputCommandRun($command, $cwd, $async)
    {
        if (null === $this->io || !$this->io->isDebug()) {
            return;
        }

$safeCommand = Preg::replaceCallback('{://(?P<user>[^:/\s]+):(?P<password>[^@\s/]+)@}i', function ($m) {
            // if the username looks like a long (12char+) hex string, or a modern github token (e.g. ghp_xxx) we obfuscate that
            if (Preg::isMatch('{^([a-f0-9]{12,}|gh[a-z]_[a-zA-Z0-9_]+)$}', $m['user'])) {
                return '://***:***@';
            }
            if (Preg::isMatch('{^[a-f0-9]{12,}$}', $m['user'])) {
                return '://***:***@';
            }

return '://'.$m['user'].':***@';
        }, $command);
        $safeCommand = Preg::replace("{--password (.*[^\\\\]\') }", '--password \'***\' ', $safeCommand);
        $this->io->writeError('Executing'.($async ? ' async' : '').' command ('.($cwd ?: 'CWD').'): '.$safeCommand);
    }

/**
     * Escapes a string to be used as a shell argument for Symfony Process.
     *
     * This method expects cmd.exe to be started with the /V:ON option, which
     * enables delayed environment variable expansion using ! as the delimiter.
     * If this is not the case, any escaped ^^!var^^! will be transformed to
     * ^!var^! and introduce two unintended carets.
     *
     * Modified from https://github.com/johnstevenson/winbox-args
     * MIT Licensed (c) John Stevenson <john-stevenson@blueyonder.co.uk>
     *
     * @param string|false|null $argument
     *
     * @return string
     */
    private static function escapeArgument($argument)
    {
        if ('' === ($argument = (string) $argument)) {
            return escapeshellarg($argument);
        }

if (!Platform::isWindows()) {
            return "'".str_replace("'", "'\\''", $argument)."'";
        }

// New lines break cmd.exe command parsing
        $argument = strtr($argument, "\n", ' ');

$quote = strpbrk($argument, " \t") !== false;
        $argument = Preg::replace('/(\\\\*)"/', '$1$1\\"', $argument, -1, $dquotes);
        $meta = $dquotes || Preg::isMatch('/%[^%]+%|![^!]+!/', $argument);

if (!$meta && !$quote) {
            $quote = strpbrk($argument, '^&|<>()') !== false;
        }

if ($quote) {
            $argument = '"'.Preg::replace('/(\\\\*)$/', '$1$1', $argument).'"';
        }

if ($meta) {
            $argument = Preg::replace('/(["^&|<>()%])/', '^$1', $argument);
            $argument = Preg::replace('/(!)/', '^^$1', $argument);
        }

return $argument;
    }
}
<?php

namespace Composer\Util;

use Composer\Config;
use Composer\IO\IOInterface;
use Composer\Pcre\Preg;

/**
 * @author Jonas Renaudot <jonas.renaudot@gmail.com>
 */
class Hg
{
    /** @var string|false|null */
    private static $version = false;

/**
     * @var \Composer\IO\IOInterface
     */
    private $io;

/**
     * @var \Composer\Config
     */
    private $config;

/**
     * @var \Composer\Util\ProcessExecutor
     */
    private $process;

public function __construct(IOInterface $io, Config $config, ProcessExecutor $process)
    {
        $this->io = $io;
        $this->config = $config;
        $this->process = $process;
    }

/**
     * @param callable    $commandCallable
     * @param string      $url
     * @param string|null $cwd
     *
     * @return void
     */
    public function runCommand($commandCallable, $url, $cwd)
    {
        $this->config->prohibitUrlByConfig($url, $this->io);

// Try as is
        $command = call_user_func($commandCallable, $url);

if (0 === $this->process->execute($command, $ignoredOutput, $cwd)) {
            return;
        }

// Try with the authentication information available
        if (Preg::isMatch('{^(https?)://((.+)(?:\:(.+))?@)?([^/]+)(/.*)?}mi', $url, $match) && $this->io->hasAuthentication($match[5])) {
            $auth = $this->io->getAuthentication($match[5]);
            $authenticatedUrl = $match[1] . '://' . rawurlencode($auth['username']) . ':' . rawurlencode($auth['password']) . '@' . $match[5] . (!empty($match[6]) ? $match[6] : null);

$command = call_user_func($commandCallable, $authenticatedUrl);

if (0 === $this->process->execute($command, $ignoredOutput, $cwd)) {
                return;
            }

$error = $this->process->getErrorOutput();
        } else {
            $error = 'The given URL (' . $url . ') does not match the required format (http(s)://(username:password@)example.com/path-to-repository)';
        }

$this->throwException('Failed to clone ' . $url . ', ' . "\n\n" . $error, $url);
    }

/**
     * @param non-empty-string $message
     * @param string           $url
     *
     * @return never
     */
    private function throwException($message, $url)
    {
        if (null === self::getVersion($this->process)) {
            throw new \RuntimeException(Url::sanitize('Failed to clone ' . $url . ', hg was not found, check that it is installed and in your PATH env.' . "\n\n" . $this->process->getErrorOutput()));
        }

throw new \RuntimeException(Url::sanitize($message));
    }

/**
     * Retrieves the current hg version.
     *
     * @return string|null The hg version number, if present.
     */
    public static function getVersion(ProcessExecutor $process)
    {
        if (false === self::$version) {
            self::$version = null;
            if (0 === $process->execute('hg --version', $output) && Preg::isMatch('/^.+? (\d+(?:\.\d+)+)\)?\r?\n/', $output, $matches)) {
                self::$version = $matches[1];
            }
        }

return self::$version;
    }
}
<?php

namespace Composer\Util;

use Composer\IO\IOInterface;
use Composer\Pcre\Preg;
use Symfony\Component\Process\Process;

/**
 * @author Matt Whittom <Matt.Whittom@veteransunited.com>
 *
 * @phpstan-type RepoConfig array{unique_perforce_client_name?: string, depot?: string, branch?: string, p4user?: string, p4password?: string}
 */
class Perforce
{
    /** @var string */
    protected $path;
    /** @var ?string */
    protected $p4Depot;
    /** @var ?string */
    protected $p4Client;
    /** @var ?string */
    protected $p4User;
    /** @var ?string */
    protected $p4Password;
    /** @var string */
    protected $p4Port;
    /** @var ?string */
    protected $p4Stream;
    /** @var string */
    protected $p4ClientSpec;
    /** @var ?string */
    protected $p4DepotType;
    /** @var ?string */
    protected $p4Branch;
    /** @var ProcessExecutor */
    protected $process;
    /** @var string */
    protected $uniquePerforceClientName;
    /** @var bool */
    protected $windowsFlag;
    /** @var string */
    protected $commandResult;

/** @var IOInterface */
    protected $io;

/** @var ?Filesystem */
    protected $filesystem;

/**
     * @phpstan-param RepoConfig $repoConfig
     * @param string             $port
     * @param string             $path
     * @param ProcessExecutor    $process
     * @param bool               $isWindows
     * @param IOInterface        $io
     */
    public function __construct($repoConfig, $port, $path, ProcessExecutor $process, $isWindows, IOInterface $io)
    {
        $this->windowsFlag = $isWindows;
        $this->p4Port = $port;
        $this->initializePath($path);
        $this->process = $process;
        $this->initialize($repoConfig);
        $this->io = $io;
    }

/**
     * @phpstan-param RepoConfig $repoConfig
     * @param string             $port
     * @param string             $path
     * @param ProcessExecutor    $process
     * @param IOInterface        $io
     *
     * @return self
     */
    public static function create($repoConfig, $port, $path, ProcessExecutor $process, IOInterface $io)
    {
        return new Perforce($repoConfig, $port, $path, $process, Platform::isWindows(), $io);
    }

/**
     * @param string          $url
     * @param ProcessExecutor $processExecutor
     *
     * @return bool
     */
    public static function checkServerExists($url, ProcessExecutor $processExecutor)
    {
        $output = null;

return  0 === $processExecutor->execute('p4 -p ' . ProcessExecutor::escape($url) . ' info -s', $output);
    }

/**
     * @phpstan-param RepoConfig $repoConfig
     *
     * @return void
     */
    public function initialize($repoConfig)
    {
        $this->uniquePerforceClientName = $this->generateUniquePerforceClientName();
        if (!$repoConfig) {
            return;
        }
        if (isset($repoConfig['unique_perforce_client_name'])) {
            $this->uniquePerforceClientName = $repoConfig['unique_perforce_client_name'];
        }

if (isset($repoConfig['depot'])) {
            $this->p4Depot = $repoConfig['depot'];
        }
        if (isset($repoConfig['branch'])) {
            $this->p4Branch = $repoConfig['branch'];
        }
        if (isset($repoConfig['p4user'])) {
            $this->p4User = $repoConfig['p4user'];
        } else {
            $this->p4User = $this->getP4variable('P4USER');
        }
        if (isset($repoConfig['p4password'])) {
            $this->p4Password = $repoConfig['p4password'];
        }
    }

/**
     * @param string|null $depot
     * @param string|null $branch
     *
     * @return void
     */
    public function initializeDepotAndBranch($depot, $branch)
    {
        if (isset($depot)) {
            $this->p4Depot = $depot;
        }
        if (isset($branch)) {
            $this->p4Branch = $branch;
        }
    }

/**
     * @return non-empty-string
     */
    public function generateUniquePerforceClientName()
    {
        return gethostname() . "_" . time();
    }

/**
     * @return void
     */
    public function cleanupClientSpec()
    {
        $client = $this->getClient();
        $task = 'client -d ' . ProcessExecutor::escape($client);
        $useP4Client = false;
        $command = $this->generateP4Command($task, $useP4Client);
        $this->executeCommand($command);
        $clientSpec = $this->getP4ClientSpec();
        $fileSystem = $this->getFilesystem();
        $fileSystem->remove($clientSpec);
    }

/**
     * @param non-empty-string $command
     *
     * @return int
     */
    protected function executeCommand($command)
    {
        $this->commandResult = '';

return $this->process->execute($command, $this->commandResult);
    }

/**
     * @return string
     */
    public function getClient()
    {
        if (!isset($this->p4Client)) {
            $cleanStreamName = str_replace(array('//', '/', '@'), array('', '_', ''), $this->getStream());
            $this->p4Client = 'composer_perforce_' . $this->uniquePerforceClientName . '_' . $cleanStreamName;
        }

return $this->p4Client;
    }

/**
     * @return string
     */
    protected function getPath()
    {
        return $this->path;
    }

/**
     * @param string $path
     *
     * @return void
     */
    public function initializePath($path)
    {
        $this->path = $path;
        $fs = $this->getFilesystem();
        $fs->ensureDirectoryExists($path);
    }

/**
     * @return string
     */
    protected function getPort()
    {
        return $this->p4Port;
    }

/**
     * @param string $stream
     *
     * @return void
     */
    public function setStream($stream)
    {
        $this->p4Stream = $stream;
        $index = strrpos($stream, '/');
        //Stream format is //depot/stream, while non-streaming depot is //depot
        if ($index > 2) {
            $this->p4DepotType = 'stream';
        }
    }

/**
     * @return bool
     */
    public function isStream()
    {
        return is_string($this->p4DepotType) && (strcmp($this->p4DepotType, 'stream') === 0);
    }

/**
     * @return string
     */
    public function getStream()
    {
        if (!isset($this->p4Stream)) {
            if ($this->isStream()) {
                $this->p4Stream = '//' . $this->p4Depot . '/' . $this->p4Branch;
            } else {
                $this->p4Stream = '//' . $this->p4Depot;
            }
        }

return $this->p4Stream;
    }

/**
     * @param string $stream
     *
     * @return string
     */
    public function getStreamWithoutLabel($stream)
    {
        $index = strpos($stream, '@');
        if ($index === false) {
            return $stream;
        }

return substr($stream, 0, $index);
    }

/**
     * @return non-empty-string
     */
    public function getP4ClientSpec()
    {
        return $this->path . '/' . $this->getClient() . '.p4.spec';
    }

/**
     * @return string|null
     */
    public function getUser()
    {
        return $this->p4User;
    }

/**
     * @param string|null $user
     *
     * @return void
     */
    public function setUser($user)
    {
        $this->p4User = $user;
    }

/**
     * @return void
     */
    public function queryP4User()
    {
        $this->getUser();
        if (strlen((string) $this->p4User) > 0) {
            return;
        }
        $this->p4User = $this->getP4variable('P4USER');
        if (strlen((string) $this->p4User) > 0) {
            return;
        }
        $this->p4User = $this->io->ask('Enter P4 User:');
        if ($this->windowsFlag) {
            $command = 'p4 set P4USER=' . $this->p4User;
        } else {
            $command = 'export P4USER=' . $this->p4User;
        }
        $this->executeCommand($command);
    }

/**
     * @param  string  $name
     * @return ?string
     */
    protected function getP4variable($name)
    {
        if ($this->windowsFlag) {
            $command = 'p4 set';
            $this->executeCommand($command);
            $result = trim($this->commandResult);
            $resArray = explode(PHP_EOL, $result);
            foreach ($resArray as $line) {
                $fields = explode('=', $line);
                if (strcmp($name, $fields[0]) == 0) {
                    $index = strpos($fields[1], ' ');
                    if ($index === false) {
                        $value = $fields[1];
                    } else {
                        $value = substr($fields[1], 0, $index);
                    }
                    $value = trim($value);

return $value;
                }
            }

return null;
        }

$command = 'echo $' . $name;
        $this->executeCommand($command);
        $result = trim($this->commandResult);

return $result;
    }

/**
     * @return string|null
     */
    public function queryP4Password()
    {
        if (isset($this->p4Password)) {
            return $this->p4Password;
        }
        $password = $this->getP4variable('P4PASSWD');
        if (strlen((string) $password) <= 0) {
            $password = $this->io->askAndHideAnswer('Enter password for Perforce user ' . $this->getUser() . ': ');
        }
        $this->p4Password = $password;

return $password;
    }

/**
     * @param string $command
     * @param bool   $useClient
     *
     * @return non-empty-string
     */
    public function generateP4Command($command, $useClient = true)
    {
        $p4Command = 'p4 ';
        $p4Command .= '-u ' . $this->getUser() . ' ';
        if ($useClient) {
            $p4Command .= '-c ' . $this->getClient() . ' ';
        }
        $p4Command .= '-p ' . $this->getPort() . ' ' . $command;

return $p4Command;
    }

/**
     * @return bool
     */
    public function isLoggedIn()
    {
        $command = $this->generateP4Command('login -s', false);
        $exitCode = $this->executeCommand($command);
        if ($exitCode) {
            $errorOutput = $this->process->getErrorOutput();
            $index = strpos($errorOutput, $this->getUser());
            if ($index === false) {
                $index = strpos($errorOutput, 'p4');
                if ($index === false) {
                    return false;
                }
                throw new \Exception('p4 command not found in path: ' . $errorOutput);
            }
            throw new \Exception('Invalid user name: ' . $this->getUser());
        }

return true;
    }

/**
     * @return void
     */
    public function connectClient()
    {
        $p4CreateClientCommand = $this->generateP4Command(
            'client -i < ' . str_replace(" ", "\\ ", $this->getP4ClientSpec())
        );
        $this->executeCommand($p4CreateClientCommand);
    }

/**
     * @param string|null $sourceReference
     *
     * @return void
     */
    public function syncCodeBase($sourceReference)
    {
        $prevDir = getcwd();
        chdir($this->path);
        $p4SyncCommand = $this->generateP4Command('sync -f ');
        if (null !== $sourceReference) {
            $p4SyncCommand .= '@' . $sourceReference;
        }
        $this->executeCommand($p4SyncCommand);
        chdir($prevDir);
    }

/**
     * @param resource|false $spec
     *
     * @return void
     */
    public function writeClientSpecToFile($spec)
    {
        fwrite($spec, 'Client: ' . $this->getClient() . PHP_EOL . PHP_EOL);
        fwrite($spec, 'Update: ' . date('Y/m/d H:i:s') . PHP_EOL . PHP_EOL);
        fwrite($spec, 'Access: ' . date('Y/m/d H:i:s') . PHP_EOL);
        fwrite($spec, 'Owner:  ' . $this->getUser() . PHP_EOL . PHP_EOL);
        fwrite($spec, 'Description:' . PHP_EOL);
        fwrite($spec, '  Created by ' . $this->getUser() . ' from composer.' . PHP_EOL . PHP_EOL);
        fwrite($spec, 'Root: ' . $this->getPath() . PHP_EOL . PHP_EOL);
        fwrite($spec, 'Options:  noallwrite noclobber nocompress unlocked modtime rmdir' . PHP_EOL . PHP_EOL);
        fwrite($spec, 'SubmitOptions:  revertunchanged' . PHP_EOL . PHP_EOL);
        fwrite($spec, 'LineEnd:  local' . PHP_EOL . PHP_EOL);
        if ($this->isStream()) {
            fwrite($spec, 'Stream:' . PHP_EOL);
            fwrite($spec, '  ' . $this->getStreamWithoutLabel($this->p4Stream) . PHP_EOL);
        } else {
            fwrite(
                $spec,
                'View:  ' . $this->getStream() . '/...  //' . $this->getClient() . '/... ' . PHP_EOL
            );
        }
    }

/**
     * @return void
     */
    public function writeP4ClientSpec()
    {
        $clientSpec = $this->getP4ClientSpec();
        $spec = fopen($clientSpec, 'w');
        try {
            $this->writeClientSpecToFile($spec);
        } catch (\Exception $e) {
            fclose($spec);
            throw $e;
        }
        fclose($spec);
    }

/**
     * @param resource $pipe
     * @param mixed    $name
     *
     * @return void
     */
    protected function read($pipe, $name)
    {
        if (feof($pipe)) {
            return;
        }
        $line = fgets($pipe);
        while ($line !== false) {
            $line = fgets($pipe);
        }
    }

/**
     * @param string|null $password
     *
     * @return int
     */
    public function windowsLogin($password)
    {
        $command = $this->generateP4Command(' login -a');

// TODO in v3 generate command as an array
        if (method_exists('Symfony\Component\Process\Process', 'fromShellCommandline')) {
            $process = Process::fromShellCommandline($command, null, null, $password);
        } else {
            // @phpstan-ignore-next-line
            $process = new Process($command, null, null, $password);
        }

return $process->run();
    }

/**
     * @return void
     */
    public function p4Login()
    {
        $this->queryP4User();
        if (!$this->isLoggedIn()) {
            $password = $this->queryP4Password();
            if ($this->windowsFlag) {
                $this->windowsLogin($password);
            } else {
                $command = 'echo ' . ProcessExecutor::escape($password)  . ' | ' . $this->generateP4Command(' login -a', false);
                $exitCode = $this->executeCommand($command);
                if ($exitCode) {
                    throw new \Exception("Error logging in:" . $this->process->getErrorOutput());
                }
            }
        }
    }

/**
     * @param string $identifier
     *
     * @return mixed|void
     */
    public function getComposerInformation($identifier)
    {
        $composerFileContent = $this->getFileContent('composer.json', $identifier);

if (!$composerFileContent) {
            return;
        }

return json_decode($composerFileContent, true);
    }

/**
     * @param string $file
     * @param string $identifier
     *
     * @return string|null
     */
    public function getFileContent($file, $identifier)
    {
        $path = $this->getFilePath($file, $identifier);

$command = $this->generateP4Command(' print ' . ProcessExecutor::escape($path));
        $this->executeCommand($command);
        $result = $this->commandResult;

if (!trim($result)) {
            return null;
        }

return $result;
    }

/**
     * @param string $file
     * @param string $identifier
     *
     * @return string|null
     */
    public function getFilePath($file, $identifier)
    {
        $index = strpos($identifier, '@');
        if ($index === false) {
            return $identifier. '/' . $file;
        }

$path = substr($identifier, 0, $index) . '/' . $file . substr($identifier, $index);
        $command = $this->generateP4Command(' files ' . ProcessExecutor::escape($path), false);
        $this->executeCommand($command);
        $result = $this->commandResult;
        $index2 = strpos($result, 'no such file(s).');
        if ($index2 === false) {
            $index3 = strpos($result, 'change');
            if ($index3 !== false) {
                $phrase = trim(substr($result, $index3));
                $fields = explode(' ', $phrase);

return substr($identifier, 0, $index) . '/' . $file . '@' . $fields[1];
            }
        }

return null;
    }

/**
     * @return array{master: string}
     */
    public function getBranches()
    {
        $possibleBranches = array();
        if (!$this->isStream()) {
            $possibleBranches[$this->p4Branch] = $this->getStream();
        } else {
            $command = $this->generateP4Command('streams '.ProcessExecutor::escape('//' . $this->p4Depot . '/...'));
            $this->executeCommand($command);
            $result = $this->commandResult;
            $resArray = explode(PHP_EOL, $result);
            foreach ($resArray as $line) {
                $resBits = explode(' ', $line);
                if (count($resBits) > 4) {
                    $branch = Preg::replace('/[^A-Za-z0-9 ]/', '', $resBits[4]);
                    $possibleBranches[$branch] = $resBits[1];
                }
            }
        }
        $command = $this->generateP4Command('changes '. ProcessExecutor::escape($this->getStream() . '/...'), false);
        $this->executeCommand($command);
        $result = $this->commandResult;
        $resArray = explode(PHP_EOL, $result);
        $lastCommit = $resArray[0];
        $lastCommitArr = explode(' ', $lastCommit);
        $lastCommitNum = $lastCommitArr[1];

return array('master' => $possibleBranches[$this->p4Branch] . '@'. $lastCommitNum);
    }

/**
     * @return array<string, string>
     */
    public function getTags()
    {
        $command = $this->generateP4Command('labels');
        $this->executeCommand($command);
        $result = $this->commandResult;
        $resArray = explode(PHP_EOL, $result);
        $tags = array();
        foreach ($resArray as $line) {
            if (strpos($line, 'Label') !== false) {
                $fields = explode(' ', $line);
                $tags[$fields[1]] = $this->getStream() . '@' . $fields[1];
            }
        }

return $tags;
    }

/**
     * @return bool
     */
    public function checkStream()
    {
        $command = $this->generateP4Command('depots', false);
        $this->executeCommand($command);
        $result = $this->commandResult;
        $resArray = explode(PHP_EOL, $result);
        foreach ($resArray as $line) {
            if (strpos($line, 'Depot') !== false) {
                $fields = explode(' ', $line);
                if (strcmp($this->p4Depot, $fields[1]) === 0) {
                    $this->p4DepotType = $fields[3];

return $this->isStream();
                }
            }
        }

return false;
    }

/**
     * @param  string     $reference
     * @return mixed|null
     */
    protected function getChangeList($reference)
    {
        $index = strpos($reference, '@');
        if ($index === false) {
            return null;
        }
        $label = substr($reference, $index);
        $command = $this->generateP4Command(' changes -m1 ' . ProcessExecutor::escape($label));
        $this->executeCommand($command);
        $changes = $this->commandResult;
        if (strpos($changes, 'Change') !== 0) {
            return null;
        }
        $fields = explode(' ', $changes);

return $fields[1];
    }

/**
     * @param  string     $fromReference
     * @param  string     $toReference
     * @return mixed|null
     */
    public function getCommitLogs($fromReference, $toReference)
    {
        $fromChangeList = $this->getChangeList($fromReference);
        if ($fromChangeList === null) {
            return null;
        }
        $toChangeList = $this->getChangeList($toReference);
        if ($toChangeList === null) {
            return null;
        }
        $index = strpos($fromReference, '@');
        $main = substr($fromReference, 0, $index) . '/...';
        $command = $this->generateP4Command('filelog ' . ProcessExecutor::escape($main . '@' . $fromChangeList. ',' . $toChangeList));
        $this->executeCommand($command);

return $this->commandResult;
    }

/**
     * @return Filesystem
     */
    public function getFilesystem()
    {
        if (null === $this->filesystem) {
            $this->filesystem = new Filesystem($this->process);
        }

return $this->filesystem;
    }

/**
     * @return void
     */
    public function setFilesystem(Filesystem $fs)
    {
        $this->filesystem = $fs;
    }
}
<?php

namespace Composer\Util;

use Composer\IO\IOInterface;
use Composer\Pcre\Preg;

/**
 * Convert PHP errors into exceptions
 *
 * @author Artem Lopata <biozshock@gmail.com>
 */
class ErrorHandler
{
    /** @var ?IOInterface */
    private static $io;

/**
     * Error handler
     *
     * @param int    $level   Level of the error raised
     * @param string $message Error message
     * @param string $file    Filename that the error was raised in
     * @param int    $line    Line number the error was raised at
     *
     * @static
     * @throws \ErrorException
     * @return bool
     */
    public static function handle($level, $message, $file, $line)
    {
        // error code is not included in error_reporting
        if (!(error_reporting() & $level)) {
            return true;
        }

if (filter_var(ini_get('xdebug.scream'), FILTER_VALIDATE_BOOLEAN)) {
            $message .= "\n\nWarning: You have xdebug.scream enabled, the warning above may be".
            "\na legitimately suppressed error that you were not supposed to see.";
        }

if ($level !== E_DEPRECATED && $level !== E_USER_DEPRECATED) {
            throw new \ErrorException($message, 0, $level, $file, $line);
        }

if (self::$io) {
            // ignore symfony/* deprecation warnings
            // TODO remove in 2.3
            if (Preg::isMatch('{^Return type of Symfony\\\\.*ReturnTypeWillChange}is', $message)) {
                return true;
            }
            if (strpos(strtr($file, '\\', '/'), 'vendor/symfony/') !== false) {
                return true;
            }

self::$io->writeError('<warning>Deprecation Notice: '.$message.' in '.$file.':'.$line.'</warning>');
            if (self::$io->isVerbose()) {
                self::$io->writeError('<warning>Stack trace:</warning>');
                self::$io->writeError(array_filter(array_map(function ($a) {
                    if (isset($a['line'], $a['file'])) {
                        return '<warning> '.$a['file'].':'.$a['line'].'</warning>';
                    }

return null;
                }, array_slice(debug_backtrace(), 2))));
            }
        }

return true;
    }

/**
     * Register error handler.
     *
     * @param IOInterface|null $io
     *
     * @return void
     */
    public static function register(IOInterface $io = null)
    {
        set_error_handler(array(__CLASS__, 'handle'));
        error_reporting(E_ALL | E_STRICT);
        self::$io = $io;
    }
}
<?php

namespace Composer\Util;

use Composer\Config;
use Composer\IO\IOInterface;
use Composer\Pcre\Preg;

/**
 * @author Till Klampaeckel <till@php.net>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class Svn
{
    const MAX_QTY_AUTH_TRIES = 5;

/**
     * @var ?array{username: string, password: string}
     */
    protected $credentials;

/**
     * @var bool
     */
    protected $hasAuth;

/**
     * @var \Composer\IO\IOInterface
     */
    protected $io;

/**
     * @var string
     */
    protected $url;

/**
     * @var bool
     */
    protected $cacheCredentials = true;

/**
     * @var ProcessExecutor
     */
    protected $process;

/**
     * @var int
     */
    protected $qtyAuthTries = 0;

/**
     * @var \Composer\Config
     */
    protected $config;

/**
     * @var string|null
     */
    private static $version;

/**
     * @param string                   $url
     * @param \Composer\IO\IOInterface $io
     * @param Config                   $config
     * @param ProcessExecutor          $process
     */
    public function __construct($url, IOInterface $io, Config $config, ProcessExecutor $process = null)
    {
        $this->url = $url;
        $this->io = $io;
        $this->config = $config;
        $this->process = $process ?: new ProcessExecutor($io);
    }

/**
     * @return void
     */
    public static function cleanEnv()
    {
        // clean up env for OSX, see https://github.com/composer/composer/issues/2146#issuecomment-35478940
        Platform::clearEnv('DYLD_LIBRARY_PATH');
    }

/**
     * Execute an SVN remote command and try to fix up the process with credentials
     * if necessary.
     *
     * @param string $command SVN command to run
     * @param string $url     SVN url
     * @param string $cwd     Working directory
     * @param string $path    Target for a checkout
     * @param bool   $verbose Output all output to the user
     *
     * @throws \RuntimeException
     * @return string
     */
    public function execute($command, $url, $cwd = null, $path = null, $verbose = false)
    {
        // Ensure we are allowed to use this URL by config
        $this->config->prohibitUrlByConfig($url, $this->io);

return $this->executeWithAuthRetry($command, $cwd, $url, $path, $verbose);
    }

/**
     * Execute an SVN local command and try to fix up the process with credentials
     * if necessary.
     *
     * @param string $command SVN command to run
     * @param string $path    Path argument passed thru to the command
     * @param string $cwd     Working directory
     * @param bool   $verbose Output all output to the user
     *
     * @throws \RuntimeException
     * @return string
     */
    public function executeLocal($command, $path, $cwd = null, $verbose = false)
    {
        // A local command has no remote url
        return $this->executeWithAuthRetry($command, $cwd, '', $path, $verbose);
    }

/**
     * @param  string $svnCommand
     * @param  string $cwd
     * @param  string $url
     * @param  string $path
     * @param  bool   $verbose
     *
     * @return ?string
     */
    private function executeWithAuthRetry($svnCommand, $cwd, $url, $path, $verbose)
    {
        // Regenerate the command at each try, to use the newly user-provided credentials
        $command = $this->getCommand($svnCommand, $url, $path);

$output = null;
        $io = $this->io;
        $handler = function ($type, $buffer) use (&$output, $io, $verbose) {
            if ($type !== 'out') {
                return null;
            }
            if (strpos($buffer, 'Redirecting to URL ') === 0) {
                return null;
            }
            $output .= $buffer;
            if ($verbose) {
                $io->writeError($buffer, false);
            }
        };
        $status = $this->process->execute($command, $handler, $cwd);
        if (0 === $status) {
            return $output;
        }

$errorOutput = $this->process->getErrorOutput();
        $fullOutput = implode("\n", array($output, $errorOutput));

// the error is not auth-related
        if (false === stripos($fullOutput, 'Could not authenticate to server:')
            && false === stripos($fullOutput, 'authorization failed')
            && false === stripos($fullOutput, 'svn: E170001:')
            && false === stripos($fullOutput, 'svn: E215004:')) {
            throw new \RuntimeException($fullOutput);
        }

if (!$this->hasAuth()) {
            $this->doAuthDance();
        }

// try to authenticate if maximum quantity of tries not reached
        if ($this->qtyAuthTries++ < self::MAX_QTY_AUTH_TRIES) {
            // restart the process
            return $this->executeWithAuthRetry($svnCommand, $cwd, $url, $path, $verbose);
        }

throw new \RuntimeException(
            'wrong credentials provided ('.$fullOutput.')'
        );
    }

/**
     * @param  bool $cacheCredentials
     * @return void
     */
    public function setCacheCredentials($cacheCredentials)
    {
        $this->cacheCredentials = $cacheCredentials;
    }

/**
     * Repositories requests credentials, let's put them in.
     *
     * @throws \RuntimeException
     * @return \Composer\Util\Svn
     */
    protected function doAuthDance()
    {
        // cannot ask for credentials in non interactive mode
        if (!$this->io->isInteractive()) {
            throw new \RuntimeException(
                'can not ask for authentication in non interactive mode'
            );
        }

$this->io->writeError("The Subversion server ({$this->url}) requested credentials:");

$this->hasAuth = true;
        $this->credentials = array(
            'username' => (string) $this->io->ask("Username: ", ''),
            'password' => (string) $this->io->askAndHideAnswer("Password: "),
        );

$this->cacheCredentials = $this->io->askConfirmation("Should Subversion cache these credentials? (yes/no) ");

return $this;
    }

/**
     * A method to create the svn commands run.
     *
     * @param string $cmd  Usually 'svn ls' or something like that.
     * @param string $url  Repo URL.
     * @param string $path Target for a checkout
     *
     * @return string
     */
    protected function getCommand($cmd, $url, $path = null)
    {
        $cmd = sprintf(
            '%s %s%s -- %s',
            $cmd,
            '--non-interactive ',
            $this->getCredentialString(),
            ProcessExecutor::escape($url)
        );

if ($path) {
            $cmd .= ' ' . ProcessExecutor::escape($path);
        }

return $cmd;
    }

/**
     * Return the credential string for the svn command.
     *
     * Adds --no-auth-cache when credentials are present.
     *
     * @return string
     */
    protected function getCredentialString()
    {
        if (!$this->hasAuth()) {
            return '';
        }

return sprintf(
            ' %s--username %s --password %s ',
            $this->getAuthCache(),
            ProcessExecutor::escape($this->getUsername()),
            ProcessExecutor::escape($this->getPassword())
        );
    }

/**
     * Get the password for the svn command. Can be empty.
     *
     * @throws \LogicException
     * @return string
     */
    protected function getPassword()
    {
        if ($this->credentials === null) {
            throw new \LogicException("No svn auth detected.");
        }

return $this->credentials['password'];
    }

/**
     * Get the username for the svn command.
     *
     * @throws \LogicException
     * @return string
     */
    protected function getUsername()
    {
        if ($this->credentials === null) {
            throw new \LogicException("No svn auth detected.");
        }

return $this->credentials['username'];
    }

/**
     * Detect Svn Auth.
     *
     * @return bool
     */
    protected function hasAuth()
    {
        if (null !== $this->hasAuth) {
            return $this->hasAuth;
        }

if (false === $this->createAuthFromConfig()) {
            $this->createAuthFromUrl();
        }

return (bool) $this->hasAuth;
    }

/**
     * Return the no-auth-cache switch.
     *
     * @return string
     */
    protected function getAuthCache()
    {
        return $this->cacheCredentials ? '' : '--no-auth-cache ';
    }

/**
     * Create the auth params from the configuration file.
     *
     * @return bool
     */
    private function createAuthFromConfig()
    {
        if (!$this->config->has('http-basic')) {
            return $this->hasAuth = false;
        }

$authConfig = $this->config->get('http-basic');

$host = parse_url($this->url, PHP_URL_HOST);
        if (isset($authConfig[$host])) {
            $this->credentials = array(
                'username' => $authConfig[$host]['username'],
                'password' => $authConfig[$host]['password'],
            );

return $this->hasAuth = true;
        }

return $this->hasAuth = false;
    }

/**
     * Create the auth params from the url
     *
     * @return bool
     */
    private function createAuthFromUrl()
    {
        $uri = parse_url($this->url);
        if (empty($uri['user'])) {
            return $this->hasAuth = false;
        }

$this->credentials = array(
            'username' => $uri['user'],
            'password' => !empty($uri['pass']) ? $uri['pass'] : '',
        );

return $this->hasAuth = true;
    }

/**
     * Returns the version of the svn binary contained in PATH
     *
     * @return string|null
     */
    public function binaryVersion()
    {
        if (!self::$version) {
            if (0 === $this->process->execute('svn --version', $output)) {
                if (Preg::isMatch('{(\d+(?:\.\d+)+)}', $output, $match)) {
                    self::$version = $match[1];
                }
            }
        }

return self::$version;
    }
}
<?php

namespace Composer\Util;

use Composer\IO\IOInterface;
use Composer\Config;
use Composer\Factory;
use Composer\Downloader\TransportException;
use Composer\Pcre\Preg;

/**
 * @author Roshan Gautam <roshan.gautam@hotmail.com>
 */
class GitLab
{
    /** @var IOInterface */
    protected $io;
    /** @var Config */
    protected $config;
    /** @var ProcessExecutor */
    protected $process;
    /** @var HttpDownloader */
    protected $httpDownloader;

/**
     * Constructor.
     *
     * @param IOInterface     $io             The IO instance
     * @param Config          $config         The composer configuration
     * @param ProcessExecutor $process        Process instance, injectable for mocking
     * @param HttpDownloader  $httpDownloader Remote Filesystem, injectable for mocking
     */
    public function __construct(IOInterface $io, Config $config, ProcessExecutor $process = null, HttpDownloader $httpDownloader = null)
    {
        $this->io = $io;
        $this->config = $config;
        $this->process = $process ?: new ProcessExecutor($io);
        $this->httpDownloader = $httpDownloader ?: Factory::createHttpDownloader($this->io, $config);
    }

/**
     * Attempts to authorize a GitLab domain via OAuth.
     *
     * @param string $originUrl The host this GitLab instance is located at
     *
     * @return bool true on success
     */
    public function authorizeOAuth($originUrl)
    {
        // before composer 1.9, origin URLs had no port number in them
        $bcOriginUrl = Preg::replace('{:\d+}', '', $originUrl);

if (!in_array($originUrl, $this->config->get('gitlab-domains'), true) && !in_array($bcOriginUrl, $this->config->get('gitlab-domains'), true)) {
            return false;
        }

// if available use token from git config
        if (0 === $this->process->execute('git config gitlab.accesstoken', $output)) {
            $this->io->setAuthentication($originUrl, trim($output), 'oauth2');

return true;
        }

// if available use deploy token from git config
        if (0 === $this->process->execute('git config gitlab.deploytoken.user', $tokenUser) && 0 === $this->process->execute('git config gitlab.deploytoken.token', $tokenPassword)) {
            $this->io->setAuthentication($originUrl, trim($tokenUser), trim($tokenPassword));

return true;
        }

// if available use token from composer config
        $authTokens = $this->config->get('gitlab-token');

if (isset($authTokens[$originUrl])) {
            $token = $authTokens[$originUrl];
        }

if (isset($authTokens[$bcOriginUrl])) {
            $token = $authTokens[$bcOriginUrl];
        }

if (isset($token)) {
            $username = is_array($token) && array_key_exists("username", $token) ? $token["username"] : $token;
            $password = is_array($token) && array_key_exists("token", $token) ? $token["token"] : 'private-token';
            $this->io->setAuthentication($originUrl, $username, $password);

return true;
        }

return false;
    }

/**
     * Authorizes a GitLab domain interactively via OAuth.
     *
     * @param string $scheme    Scheme used in the origin URL
     * @param string $originUrl The host this GitLab instance is located at
     * @param string $message   The reason this authorization is required
     *
     * @throws \RuntimeException
     * @throws TransportException|\Exception
     *
     * @return bool true on success
     */
    public function authorizeOAuthInteractively($scheme, $originUrl, $message = null)
    {
        if ($message) {
            $this->io->writeError($message);
        }

$this->io->writeError(sprintf('A token will be created and stored in "%s", your password will never be stored', $this->config->getAuthConfigSource()->getName()));
        $this->io->writeError('To revoke access to this token you can visit '.$scheme.'://'.$originUrl.'/-/profile/personal_access_tokens');

$attemptCounter = 0;

while ($attemptCounter++ < 5) {
            try {
                $response = $this->createToken($scheme, $originUrl);
            } catch (TransportException $e) {
                // 401 is bad credentials,
                // 403 is max login attempts exceeded
                if (in_array($e->getCode(), array(403, 401))) {
                    if (401 === $e->getCode()) {
                        $response = json_decode($e->getResponse(), true);
                        if (isset($response['error']) && $response['error'] === 'invalid_grant') {
                            $this->io->writeError('Bad credentials. If you have two factor authentication enabled you will have to manually create a personal access token');
                        } else {
                            $this->io->writeError('Bad credentials.');
                        }
                    } else {
                        $this->io->writeError('Maximum number of login attempts exceeded. Please try again later.');
                    }

$this->io->writeError('You can also manually create a personal access token enabling the "read_api" scope at '.$scheme.'://'.$originUrl.'/profile/personal_access_tokens');
                    $this->io->writeError('Add it using "composer config --global --auth gitlab-token.'.$originUrl.' <token>"');

continue;
                }

throw $e;
            }

$this->io->setAuthentication($originUrl, $response['access_token'], 'oauth2');

// store value in user config in auth file
            $this->config->getAuthConfigSource()->addConfigSetting('gitlab-oauth.'.$originUrl, $response['access_token']);

return true;
        }

throw new \RuntimeException('Invalid GitLab credentials 5 times in a row, aborting.');
    }

/**
     * @param string $scheme
     * @param string $originUrl
     *
     * @return array{access_token: non-empty-string, token_type: non-empty-string, expires_in: positive-int}
     *
     * @see https://docs.gitlab.com/ee/api/oauth2.html#resource-owner-password-credentials-flow
     */
    private function createToken($scheme, $originUrl)
    {
        $username = $this->io->ask('Username: ');
        $password = $this->io->askAndHideAnswer('Password: ');

$headers = array('Content-Type: application/x-www-form-urlencoded');

$apiUrl = $originUrl;
        $data = http_build_query(array(
            'username' => $username,
            'password' => $password,
            'grant_type' => 'password',
        ), '', '&');
        $options = array(
            'retry-auth-failure' => false,
            'http' => array(
                'method' => 'POST',
                'header' => $headers,
                'content' => $data,
            ),
        );

$token = $this->httpDownloader->get($scheme.'://'.$apiUrl.'/oauth/token', $options)->decodeJson();

$this->io->writeError('Token successfully created');

return $token;
    }
}
<?php

namespace Composer\Util;

/**
 * @author Andreas Schempp <andreas.schempp@terminal42.ch>
 */
class Zip
{
    /**
     * Gets content of the root composer.json inside a ZIP archive.
     *
     * @param string $pathToZip
     *
     * @return string|null
     */
    public static function getComposerJson($pathToZip)
    {
        if (!extension_loaded('zip')) {
            throw new \RuntimeException('The Zip Util requires PHP\'s zip extension');
        }

$zip = new \ZipArchive();
        if ($zip->open($pathToZip) !== true) {
            return null;
        }

if (0 == $zip->numFiles) {
            $zip->close();

return null;
        }

$foundFileIndex = self::locateFile($zip, 'composer.json');

$content = null;
        $configurationFileName = $zip->getNameIndex($foundFileIndex);
        $stream = $zip->getStream($configurationFileName);

if (false !== $stream) {
            $content = stream_get_contents($stream);
        }

$zip->close();

return $content;
    }

/**
     * Find a file by name, returning the one that has the shortest path.
     *
     * @param  \ZipArchive       $zip
     * @param  string            $filename
     * @throws \RuntimeException
     *
     * @return int
     */
    private static function locateFile(\ZipArchive $zip, $filename)
    {
        // return root composer.json if it is there and is a file
        if (false !== ($index = $zip->locateName($filename)) && $zip->getFromIndex($index) !== false) {
            return $index;
        }

$topLevelPaths = array();
        for ($i = 0; $i < $zip->numFiles; $i++) {
            $name = $zip->getNameIndex($i);
            $dirname = dirname($name);

// ignore OSX specific resource fork folder
            if (strpos($name, '__MACOSX') !== false) {
                continue;
            }

// handle archives with proper TOC
            if ($dirname === '.') {
                $topLevelPaths[$name] = true;
                if (\count($topLevelPaths) > 1) {
                    throw new \RuntimeException('Archive has more than one top level directories, and no composer.json was found on the top level, so it\'s an invalid archive. Top level paths found were: '.implode(',', array_keys($topLevelPaths)));
                }
                continue;
            }

// handle archives which do not have a TOC record for the directory itself
            if (false === strpos($dirname, '\\') && false === strpos($dirname, '/')) {
                $topLevelPaths[$dirname.'/'] = true;
                if (\count($topLevelPaths) > 1) {
                    throw new \RuntimeException('Archive has more than one top level directories, and no composer.json was found on the top level, so it\'s an invalid archive. Top level paths found were: '.implode(',', array_keys($topLevelPaths)));
                }
            }
        }

if ($topLevelPaths && false !== ($index = $zip->locateName(key($topLevelPaths).$filename)) && $zip->getFromIndex($index) !== false) {
            return $index;
        }

throw new \RuntimeException('No composer.json found either at the top level or within the topmost directory');
    }
}
<?php

namespace Composer\Util;

use Composer\Config;
use Composer\IO\IOInterface;
use Composer\Pcre\Preg;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class Git
{
    /** @var string|false|null */
    private static $version = false;

/** @var IOInterface */
    protected $io;
    /** @var Config */
    protected $config;
    /** @var ProcessExecutor */
    protected $process;
    /** @var Filesystem */
    protected $filesystem;

public function __construct(IOInterface $io, Config $config, ProcessExecutor $process, Filesystem $fs)
    {
        $this->io = $io;
        $this->config = $config;
        $this->process = $process;
        $this->filesystem = $fs;
    }

/**
     * @param callable    $commandCallable
     * @param string      $url
     * @param string|null $cwd
     * @param bool        $initialClone
     *
     * @return void
     */
    public function runCommand($commandCallable, $url, $cwd, $initialClone = false)
    {
        // Ensure we are allowed to use this URL by config
        $this->config->prohibitUrlByConfig($url, $this->io);

if ($initialClone) {
            $origCwd = $cwd;
            $cwd = null;
        }

if (Preg::isMatch('{^ssh://[^@]+@[^:]+:[^0-9]+}', $url)) {
            throw new \InvalidArgumentException('The source URL ' . $url . ' is invalid, ssh URLs should have a port number after ":".' . "\n" . 'Use ssh://git@example.com:22/path or just git@example.com:path if you do not want to provide a password or custom port.');
        }

if (!$initialClone) {
            // capture username/password from URL if there is one and we have no auth configured yet
            $this->process->execute('git remote -v', $output, $cwd);
            if (Preg::isMatch('{^(?:composer|origin)\s+https?://(.+):(.+)@([^/]+)}im', $output, $match) && !$this->io->hasAuthentication($match[3])) {
                $this->io->setAuthentication($match[3], rawurldecode($match[1]), rawurldecode($match[2]));
            }
        }

$protocols = $this->config->get('github-protocols');
        if (!is_array($protocols)) {
            throw new \RuntimeException('Config value "github-protocols" must be an array, got ' . gettype($protocols));
        }
        // public github, autoswitch protocols
        if (Preg::isMatch('{^(?:https?|git)://' . self::getGitHubDomainsRegex($this->config) . '/(.*)}', $url, $match)) {
            $messages = array();
            foreach ($protocols as $protocol) {
                if ('ssh' === $protocol) {
                    $protoUrl = "git@" . $match[1] . ":" . $match[2];
                } else {
                    $protoUrl = $protocol . "://" . $match[1] . "/" . $match[2];
                }

if (0 === $this->process->execute(call_user_func($commandCallable, $protoUrl), $ignoredOutput, $cwd)) {
                    return;
                }
                $messages[] = '- ' . $protoUrl . "\n" . Preg::replace('#^#m', '  ', $this->process->getErrorOutput());

if ($initialClone && isset($origCwd)) {
                    $this->filesystem->removeDirectory($origCwd);
                }
            }

// failed to checkout, first check git accessibility
            if (!$this->io->hasAuthentication($match[1]) && !$this->io->isInteractive()) {
                $this->throwException('Failed to clone ' . $url . ' via ' . implode(', ', $protocols) . ' protocols, aborting.' . "\n\n" . implode("\n", $messages), $url);
            }
        }

// if we have a private github url and the ssh protocol is disabled then we skip it and directly fallback to https
        $bypassSshForGitHub = Preg::isMatch('{^git@' . self::getGitHubDomainsRegex($this->config) . ':(.+?)\.git$}i', $url) && !in_array('ssh', $protocols, true);

$command = call_user_func($commandCallable, $url);

$auth = null;
        $credentials = array();
        if ($bypassSshForGitHub || 0 !== $this->process->execute($command, $ignoredOutput, $cwd)) {
            $errorMsg = $this->process->getErrorOutput();
            // private github repository without ssh key access, try https with auth
            if (Preg::isMatch('{^git@' . self::getGitHubDomainsRegex($this->config) . ':(.+?)\.git$}i', $url, $match)
                || Preg::isMatch('{^https?://' . self::getGitHubDomainsRegex($this->config) . '/(.*?)(?:\.git)?$}i', $url, $match)
            ) {
                if (!$this->io->hasAuthentication($match[1])) {
                    $gitHubUtil = new GitHub($this->io, $this->config, $this->process);
                    $message = 'Cloning failed using an ssh key for authentication, enter your GitHub credentials to access private repos';

if (!$gitHubUtil->authorizeOAuth($match[1]) && $this->io->isInteractive()) {
                        $gitHubUtil->authorizeOAuthInteractively($match[1], $message);
                    }
                }

if ($this->io->hasAuthentication($match[1])) {
                    $auth = $this->io->getAuthentication($match[1]);
                    $authUrl = 'https://' . rawurlencode($auth['username']) . ':' . rawurlencode($auth['password']) . '@' . $match[1] . '/' . $match[2] . '.git';
                    $command = call_user_func($commandCallable, $authUrl);
                    if (0 === $this->process->execute($command, $ignoredOutput, $cwd)) {
                        return;
                    }

$credentials = array(rawurlencode($auth['username']), rawurlencode($auth['password']));
                    $errorMsg = $this->process->getErrorOutput();
                }
            } elseif (Preg::isMatch('{^https://(bitbucket\.org)/(.*?)(?:\.git)?$}i', $url, $match)) { //bitbucket oauth
                $bitbucketUtil = new Bitbucket($this->io, $this->config, $this->process);

if (!$this->io->hasAuthentication($match[1])) {
                    $message = 'Enter your Bitbucket credentials to access private repos';

if (!$bitbucketUtil->authorizeOAuth($match[1]) && $this->io->isInteractive()) {
                        $bitbucketUtil->authorizeOAuthInteractively($match[1], $message);
                        $accessToken = $bitbucketUtil->getToken();
                        $this->io->setAuthentication($match[1], 'x-token-auth', $accessToken);
                    }
                } else { //We're authenticating with a locally stored consumer.
                    $auth = $this->io->getAuthentication($match[1]);

//We already have an access_token from a previous request.
                    if ($auth['username'] !== 'x-token-auth') {
                        $accessToken = $bitbucketUtil->requestToken($match[1], $auth['username'], $auth['password']);
                        if (!empty($accessToken)) {
                            $this->io->setAuthentication($match[1], 'x-token-auth', $accessToken);
                        }
                    }
                }

$command = call_user_func($commandCallable, $authUrl);
                    if (0 === $this->process->execute($command, $ignoredOutput, $cwd)) {
                        return;
                    }

$credentials = array(rawurlencode($auth['username']), rawurlencode($auth['password']));
                    $errorMsg = $this->process->getErrorOutput();
                } else { // Falling back to ssh
                    $sshUrl = 'git@bitbucket.org:' . $match[2] . '.git';
                    $this->io->writeError('    No bitbucket authentication configured. Falling back to ssh.');
                    $command = call_user_func($commandCallable, $sshUrl);
                    if (0 === $this->process->execute($command, $ignoredOutput, $cwd)) {
                        return;
                    }

$errorMsg = $this->process->getErrorOutput();
                }
            } elseif (
                Preg::isMatch('{^(git)@' . self::getGitLabDomainsRegex($this->config) . ':(.+?\.git)$}i', $url, $match)
                || Preg::isMatch('{^(https?)://' . self::getGitLabDomainsRegex($this->config) . '/(.*)}i', $url, $match)
            ) {
                if ($match[1] === 'git') {
                    $match[1] = 'https';
                }

if (!$this->io->hasAuthentication($match[2])) {
                    $gitLabUtil = new GitLab($this->io, $this->config, $this->process);
                    $message = 'Cloning failed, enter your GitLab credentials to access private repos';

if (!$gitLabUtil->authorizeOAuth($match[2]) && $this->io->isInteractive()) {
                        $gitLabUtil->authorizeOAuthInteractively($match[1], $match[2], $message);
                    }
                }

if ($this->io->hasAuthentication($match[2])) {
                    $auth = $this->io->getAuthentication($match[2]);
                    if ($auth['password'] === 'private-token' || $auth['password'] === 'oauth2' || $auth['password'] === 'gitlab-ci-token') {
                        $authUrl = $match[1] . '://' . rawurlencode($auth['password']) . ':' . rawurlencode($auth['username']) . '@' . $match[2] . '/' . $match[3]; // swap username and password
                    } else {
                        $authUrl = $match[1] . '://' . rawurlencode($auth['username']) . ':' . rawurlencode($auth['password']) . '@' . $match[2] . '/' . $match[3];
                    }

$command = call_user_func($commandCallable, $authUrl);
                    if (0 === $this->process->execute($command, $ignoredOutput, $cwd)) {
                        return;
                    }

$credentials = array(rawurlencode($auth['username']), rawurlencode($auth['password']));
                    $errorMsg = $this->process->getErrorOutput();
                }
            } elseif ($this->isAuthenticationFailure($url, $match)) { // private non-github/gitlab/bitbucket repo that failed to authenticate
                if (strpos($match[2], '@')) {
                    list($authParts, $match[2]) = explode('@', $match[2], 2);
                }

$storeAuth = false;
                if ($this->io->hasAuthentication($match[2])) {
                    $auth = $this->io->getAuthentication($match[2]);
                } elseif ($this->io->isInteractive()) {
                    $defaultUsername = null;
                    if (isset($authParts) && $authParts) {
                        if (false !== strpos($authParts, ':')) {
                            list($defaultUsername, ) = explode(':', $authParts, 2);
                        } else {
                            $defaultUsername = $authParts;
                        }
                    }

$this->io->writeError('    Authentication required (<info>' . $match[2] . '</info>):');
                    $auth = array(
                        'username' => $this->io->ask('      Username: ', $defaultUsername),
                        'password' => $this->io->askAndHideAnswer('      Password: '),
                    );
                    $storeAuth = $this->config->get('store-auths');
                }

if ($auth) {
                    $authUrl = $match[1] . rawurlencode($auth['username']) . ':' . rawurlencode($auth['password']) . '@' . $match[2] . $match[3];

$command = call_user_func($commandCallable, $authUrl);
                    if (0 === $this->process->execute($command, $ignoredOutput, $cwd)) {
                        $this->io->setAuthentication($match[2], $auth['username'], $auth['password']);
                        $authHelper = new AuthHelper($this->io, $this->config);
                        $authHelper->storeAuth($match[2], $storeAuth);

return;
                    }

$credentials = array(rawurlencode($auth['username']), rawurlencode($auth['password']));
                    $errorMsg = $this->process->getErrorOutput();
                }
            }

if ($initialClone && isset($origCwd)) {
                $this->filesystem->removeDirectory($origCwd);
            }

if (count($credentials) > 0) {
                $command = $this->maskCredentials($command, $credentials);
                $errorMsg = $this->maskCredentials($errorMsg, $credentials);
            }
            $this->throwException('Failed to execute ' . $command . "\n\n" . $errorMsg, $url);
        }
    }

/**
     * @param string $url
     * @param string $dir
     *
     * @return bool
     */
    public function syncMirror($url, $dir)
    {
        if (Platform::getEnv('COMPOSER_DISABLE_NETWORK') && Platform::getEnv('COMPOSER_DISABLE_NETWORK') !== 'prime') {
            $this->io->writeError('<warning>Aborting git mirror sync of '.$url.' as network is disabled</warning>');

return false;
        }

// update the repo if it is a valid git repository
        if (is_dir($dir) && 0 === $this->process->execute('git rev-parse --git-dir', $output, $dir) && trim($output) === '.') {
            try {
                $commandCallable = function ($url) {
                    $sanitizedUrl = Preg::replace('{://([^@]+?):(.+?)@}', '://', $url);

return sprintf('git remote set-url origin -- %s && git remote update --prune origin && git remote set-url origin -- %s && git gc --auto', ProcessExecutor::escape($url), ProcessExecutor::escape($sanitizedUrl));
                };
                $this->runCommand($commandCallable, $url, $dir);
            } catch (\Exception $e) {
                $this->io->writeError('<error>Sync mirror failed: ' . $e->getMessage() . '</error>', true, IOInterface::DEBUG);

return false;
            }

return true;
        }

// clean up directory and do a fresh clone into it
        $this->filesystem->removeDirectory($dir);

$commandCallable = function ($url) use ($dir) {
            return sprintf('git clone --mirror -- %s %s', ProcessExecutor::escape($url), ProcessExecutor::escape($dir));
        };

$this->runCommand($commandCallable, $url, $dir, true);

return true;
    }

/**
     * @param string $url
     * @param string $dir
     * @param string $ref
     *
     * @return bool
     */
    public function fetchRefOrSyncMirror($url, $dir, $ref)
    {
        if ($this->checkRefIsInMirror($dir, $ref)) {
            return true;
        }

if ($this->syncMirror($url, $dir)) {
            return $this->checkRefIsInMirror($dir, $ref);
        }

return false;
    }

/**
     * @return string
     */
    public static function getNoShowSignatureFlag(ProcessExecutor $process)
    {
        $gitVersion = self::getVersion($process);
        if ($gitVersion && version_compare($gitVersion, '2.10.0-rc0', '>=')) {
            return ' --no-show-signature';
        }

return '';
    }

/**
     * @param string $dir
     * @param string $ref
     *
     * @return bool
     */
    private function checkRefIsInMirror($dir, $ref)
    {
        if (is_dir($dir) && 0 === $this->process->execute('git rev-parse --git-dir', $output, $dir) && trim($output) === '.') {
            $escapedRef = ProcessExecutor::escape($ref.'^{commit}');
            $exitCode = $this->process->execute(sprintf('git rev-parse --quiet --verify %s', $escapedRef), $ignoredOutput, $dir);
            if ($exitCode === 0) {
                return true;
            }
        }

return false;
    }

/**
     * @param string   $url
     * @param string[] $match
     *
     * @return bool
     */
    private function isAuthenticationFailure($url, &$match)
    {
        if (!Preg::isMatch('{^(https?://)([^/]+)(.*)$}i', $url, $match)) {
            return false;
        }

$authFailures = array(
            'fatal: Authentication failed',
            'remote error: Invalid username or password.',
            'error: 401 Unauthorized',
            'fatal: unable to access',
            'fatal: could not read Username',
        );

$errorOutput = $this->process->getErrorOutput();
        foreach ($authFailures as $authFailure) {
            if (strpos($errorOutput, $authFailure) !== false) {
                return true;
            }
        }

return false;
    }

/**
     * @return void
     */
    public static function cleanEnv()
    {
        if (PHP_VERSION_ID < 50400 && ini_get('safe_mode') && false === strpos(ini_get('safe_mode_allowed_env_vars'), 'GIT_ASKPASS')) {
            throw new \RuntimeException('safe_mode is enabled and safe_mode_allowed_env_vars does not contain GIT_ASKPASS, can not set env var. You can disable safe_mode with "-dsafe_mode=0" when running composer');
        }

// added in git 1.7.1, prevents prompting the user for username/password
        if (Platform::getEnv('GIT_ASKPASS') !== 'echo') {
            Platform::putEnv('GIT_ASKPASS', 'echo');
        }

// clean up rogue git env vars in case this is running in a git hook
        if (Platform::getEnv('GIT_DIR')) {
            Platform::clearEnv('GIT_DIR');
        }
        if (Platform::getEnv('GIT_WORK_TREE')) {
            Platform::clearEnv('GIT_WORK_TREE');
        }

// Run processes with predictable LANGUAGE
        if (Platform::getEnv('LANGUAGE') !== 'C') {
            Platform::putEnv('LANGUAGE', 'C');
        }

// clean up env for OSX, see https://github.com/composer/composer/issues/2146#issuecomment-35478940
        Platform::clearEnv('DYLD_LIBRARY_PATH');
    }

/**
     * @return non-empty-string
     */
    public static function getGitHubDomainsRegex(Config $config)
    {
        return '(' . implode('|', array_map('preg_quote', $config->get('github-domains'))) . ')';
    }

/**
     * @return non-empty-string
     */
    public static function getGitLabDomainsRegex(Config $config)
    {
        return '(' . implode('|', array_map('preg_quote', $config->get('gitlab-domains'))) . ')';
    }

/**
     * @param non-empty-string $message
     * @param string           $url
     *
     * @return never
     */
    private function throwException($message, $url)
    {
        // git might delete a directory when it fails and php will not know
        clearstatcache();

if (0 !== $this->process->execute('git --version', $ignoredOutput)) {
            throw new \RuntimeException(Url::sanitize('Failed to clone ' . $url . ', git was not found, check that it is installed and in your PATH env.' . "\n\n" . $this->process->getErrorOutput()));
        }

throw new \RuntimeException(Url::sanitize($message));
    }

/**
     * Retrieves the current git version.
     *
     * @return string|null The git version number, if present.
     */
    public static function getVersion(ProcessExecutor $process)
    {
        if (false === self::$version) {
            self::$version = null;
            if (0 === $process->execute('git --version', $output) && Preg::isMatch('/^git version (\d+(?:\.\d+)+)/m', $output, $matches)) {
                self::$version = $matches[1];
            }
        }

return self::$version;
    }

/**
     * @param string   $error
     * @param string[] $credentials
     *
     * @return string
     */
    private function maskCredentials($error, array $credentials)
    {
        $maskedCredentials = array();

foreach ($credentials as $credential) {
            if (in_array($credential, array('private-token', 'x-token-auth', 'oauth2', 'gitlab-ci-token', 'x-oauth-basic'))) {
                $maskedCredentials[] = $credential;
            } elseif (strlen($credential) > 6) {
                $maskedCredentials[] = substr($credential, 0, 3) . '...' . substr($credential, -3);
            } elseif (strlen($credential) > 3) {
                $maskedCredentials[] = substr($credential, 0, 3) . '...';
            } else {
                $maskedCredentials[] = 'XXX';
            }
        }

return str_replace($credentials, $maskedCredentials, $error);
    }
}
<?php

namespace Composer\Util;

use Composer\Config;
use Composer\Downloader\MaxFileSizeExceededException;
use Composer\IO\IOInterface;
use Composer\Downloader\TransportException;
use Composer\CaBundle\CaBundle;
use Composer\Pcre\Preg;
use Composer\Util\Http\Response;
use Composer\Util\Http\ProxyManager;

/**
 * @internal
 * @author François Pluchino <francois.pluchino@opendisplay.com>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 * @author Nils Adermann <naderman@naderman.de>
 */
class RemoteFilesystem
{
    /** @var IOInterface */
    private $io;
    /** @var Config */
    private $config;
    /** @var string */
    private $scheme;
    /** @var int */
    private $bytesMax;
    /** @var string */
    private $originUrl;
    /** @var string */
    private $fileUrl;
    /** @var ?string */
    private $fileName;
    /** @var bool */
    private $retry = false;
    /** @var bool */
    private $progress;
    /** @var ?int */
    private $lastProgress;
    /** @var mixed[] */
    private $options = array();
    /** @var array<string, array{cn: string, fp: string}> */
    private $peerCertificateMap = array();
    /** @var bool */
    private $disableTls = false;
    /** @var string[] */
    private $lastHeaders;
    /** @var bool */
    private $storeAuth = false;
    /** @var AuthHelper */
    private $authHelper;
    /** @var bool */
    private $degradedMode = false;
    /** @var int */
    private $redirects;
    /** @var int */
    private $maxRedirects = 20;
    /** @var ProxyManager */
    private $proxyManager;

/**
     * Constructor.
     *
     * @param IOInterface $io         The IO instance
     * @param Config      $config     The config
     * @param mixed[]     $options    The options
     * @param bool        $disableTls
     * @param AuthHelper  $authHelper
     */
    public function __construct(IOInterface $io, Config $config, array $options = array(), $disableTls = false, AuthHelper $authHelper = null)
    {
        $this->io = $io;

// Setup TLS options
        // The cafile option can be set via config.json
        if ($disableTls === false) {
            $this->options = StreamContextFactory::getTlsDefaults($options, $io);
        } else {
            $this->disableTls = true;
        }

// handle the other externally set options normally.
        $this->options = array_replace_recursive($this->options, $options);
        $this->config = $config;
        $this->authHelper = isset($authHelper) ? $authHelper : new AuthHelper($io, $config);
        $this->proxyManager = ProxyManager::getInstance();
    }

/**
     * Copy the remote file in local.
     *
     * @param string  $originUrl The origin URL
     * @param string  $fileUrl   The file URL
     * @param string  $fileName  the local filename
     * @param bool    $progress  Display the progression
     * @param mixed[] $options   Additional context options
     *
     * @return bool true
     */
    public function copy($originUrl, $fileUrl, $fileName, $progress = true, $options = array())
    {
        return $this->get($originUrl, $fileUrl, $options, $fileName, $progress);
    }

/**
     * Get the content.
     *
     * @param string  $originUrl The origin URL
     * @param string  $fileUrl   The file URL
     * @param bool    $progress  Display the progression
     * @param mixed[] $options   Additional context options
     *
     * @return bool|string The content
     */
    public function getContents($originUrl, $fileUrl, $progress = true, $options = array())
    {
        return $this->get($originUrl, $fileUrl, $options, null, $progress);
    }

/**
     * Retrieve the options set in the constructor
     *
     * @return mixed[] Options
     */
    public function getOptions()
    {
        return $this->options;
    }

/**
     * Merges new options
     *
     * @param  mixed[] $options
     * @return void
     */
    public function setOptions(array $options)
    {
        $this->options = array_replace_recursive($this->options, $options);
    }

/**
     * Check is disable TLS.
     *
     * @return bool
     */
    public function isTlsDisabled()
    {
        return $this->disableTls === true;
    }

/**
     * Returns the headers of the last request
     *
     * @return string[]
     */
    public function getLastHeaders()
    {
        return $this->lastHeaders;
    }

/**
     * @param  string[] $headers array of returned headers like from getLastHeaders()
     * @return int|null
     */
    public static function findStatusCode(array $headers)
    {
        $value = null;
        foreach ($headers as $header) {
            if (Preg::isMatch('{^HTTP/\S+ (\d+)}i', $header, $match)) {
                // In case of redirects, http_response_headers contains the headers of all responses
                // so we can not return directly and need to keep iterating
                $value = (int) $match[1];
            }
        }

return $value;
    }

/**
     * @param  string[]    $headers array of returned headers like from getLastHeaders()
     * @return string|null
     */
    public function findStatusMessage(array $headers)
    {
        $value = null;
        foreach ($headers as $header) {
            if (Preg::isMatch('{^HTTP/\S+ \d+}i', $header)) {
                // In case of redirects, http_response_headers contains the headers of all responses
                // so we can not return directly and need to keep iterating
                $value = $header;
            }
        }

return $value;
    }

/**
     * Get file content or copy action.
     *
     * @param string  $originUrl         The origin URL
     * @param string  $fileUrl           The file URL
     * @param mixed[] $additionalOptions context options
     * @param string  $fileName          the local filename
     * @param bool    $progress          Display the progression
     *
     * @throws TransportException|\Exception
     * @throws TransportException            When the file could not be downloaded
     *
     * @return bool|string
     */
    protected function get($originUrl, $fileUrl, $additionalOptions = array(), $fileName = null, $progress = true)
    {
        $this->scheme = parse_url($fileUrl, PHP_URL_SCHEME);
        $this->bytesMax = 0;
        $this->originUrl = $originUrl;
        $this->fileUrl = $fileUrl;
        $this->fileName = $fileName;
        $this->progress = $progress;
        $this->lastProgress = null;
        $retryAuthFailure = true;
        $this->lastHeaders = array();
        $this->redirects = 1; // The first request counts.

$tempAdditionalOptions = $additionalOptions;
        if (isset($tempAdditionalOptions['retry-auth-failure'])) {
            $retryAuthFailure = (bool) $tempAdditionalOptions['retry-auth-failure'];

unset($tempAdditionalOptions['retry-auth-failure']);
        }

$isRedirect = false;
        if (isset($tempAdditionalOptions['redirects'])) {
            $this->redirects = $tempAdditionalOptions['redirects'];
            $isRedirect = true;

unset($tempAdditionalOptions['redirects']);
        }

$options = $this->getOptionsForUrl($originUrl, $tempAdditionalOptions);
        unset($tempAdditionalOptions);

$origFileUrl = $fileUrl;

if (isset($options['gitlab-token'])) {
            $fileUrl .= (false === strpos($fileUrl, '?') ? '?' : '&') . 'access_token='.$options['gitlab-token'];
            unset($options['gitlab-token']);
        }

if (isset($options['http'])) {
            $options['http']['ignore_errors'] = true;
        }

if ($this->degradedMode && strpos($fileUrl, 'http://repo.packagist.org/') === 0) {
            // access packagist using the resolved IPv4 instead of the hostname to force IPv4 protocol
            $fileUrl = 'http://' . gethostbyname('repo.packagist.org') . substr($fileUrl, 20);
            $degradedPackagist = true;
        }

$maxFileSize = null;
        if (isset($options['max_file_size'])) {
            $maxFileSize = $options['max_file_size'];
            unset($options['max_file_size']);
        }

$ctx = StreamContextFactory::getContext($fileUrl, $options, array('notification' => array($this, 'callbackGet')));

$proxy = $this->proxyManager->getProxyForRequest($fileUrl);
        $usingProxy = $proxy->getFormattedUrl(' using proxy (%s)');
        $this->io->writeError((strpos($origFileUrl, 'http') === 0 ? 'Downloading ' : 'Reading ') . Url::sanitize($origFileUrl) . $usingProxy, true, IOInterface::DEBUG);
        unset($origFileUrl, $proxy, $usingProxy);

// Check for secure HTTP, but allow insecure Packagist calls to $hashed providers as file integrity is verified with sha256
        if ((!Preg::isMatch('{^http://(repo\.)?packagist\.org/p/}', $fileUrl) || (false === strpos($fileUrl, '$') && false === strpos($fileUrl, '%24'))) && empty($degradedPackagist)) {
            $this->config->prohibitUrlByConfig($fileUrl, $this->io);
        }

if ($this->progress && !$isRedirect) {
            $this->io->writeError("Downloading (<comment>connecting...</comment>)", false);
        }

$errorMessage = '';
        $errorCode = 0;
        $result = false;
        set_error_handler(function ($code, $msg) use (&$errorMessage) {
            if ($errorMessage) {
                $errorMessage .= "\n";
            }
            $errorMessage .= Preg::replace('{^file_get_contents$.*?$: }', '', $msg);

return true;
        });
        $http_response_header = array();
        try {
            $result = $this->getRemoteContents($originUrl, $fileUrl, $ctx, $http_response_header, $maxFileSize);

if (!empty($http_response_header[0])) {
                $statusCode = self::findStatusCode($http_response_header);
                if ($statusCode >= 400 && Response::findHeaderValue($http_response_header, 'content-type') === 'application/json') {
                    HttpDownloader::outputWarnings($this->io, $originUrl, json_decode($result, true));
                }

if (in_array($statusCode, array(401, 403)) && $retryAuthFailure) {
                    $this->promptAuthAndRetry($statusCode, $this->findStatusMessage($http_response_header), $http_response_header);
                }
            }

$contentLength = !empty($http_response_header[0]) ? Response::findHeaderValue($http_response_header, 'content-length') : null;
            if ($contentLength && Platform::strlen($result) < $contentLength) {
                // alas, this is not possible via the stream callback because STREAM_NOTIFY_COMPLETED is documented, but not implemented anywhere in PHP
                $e = new TransportException('Content-Length mismatch, received '.Platform::strlen($result).' bytes out of the expected '.$contentLength);
                $e->setHeaders($http_response_header);
                $e->setStatusCode(self::findStatusCode($http_response_header));
                try {
                    $e->setResponse($this->decodeResult($result, $http_response_header));
                } catch (\Exception $discarded) {
                    $e->setResponse($this->normalizeResult($result));
                }

$this->io->writeError('Content-Length mismatch, received '.Platform::strlen($result).' out of '.$contentLength.' bytes: (' . base64_encode($result).')', true, IOInterface::DEBUG);

throw $e;
            }

if (PHP_VERSION_ID < 50600 && !empty($options['ssl']['peer_fingerprint'])) {
                // Emulate fingerprint validation on PHP < 5.6
                $params = stream_context_get_params($ctx);
                $expectedPeerFingerprint = $options['ssl']['peer_fingerprint'];
                $peerFingerprint = TlsHelper::getCertificateFingerprint($params['options']['ssl']['peer_certificate']);

// Constant time compare??!
                if ($expectedPeerFingerprint !== $peerFingerprint) {
                    throw new TransportException('Peer fingerprint did not match');
                }
            }
        } catch (\Exception $e) {
            if ($e instanceof TransportException && !empty($http_response_header[0])) {
                $e->setHeaders($http_response_header);
                $e->setStatusCode(self::findStatusCode($http_response_header));
            }
            if ($e instanceof TransportException && $result !== false) {
                $e->setResponse($this->decodeResult($result, $http_response_header));
            }
            $result = false;
        }
        if ($errorMessage && !filter_var(ini_get('allow_url_fopen'), FILTER_VALIDATE_BOOLEAN)) {
            $errorMessage = 'allow_url_fopen must be enabled in php.ini ('.$errorMessage.')';
        }
        restore_error_handler();
        if (isset($e) && !$this->retry) {
            if (!$this->degradedMode && false !== strpos($e->getMessage(), 'Operation timed out')) {
                $this->degradedMode = true;
                $this->io->writeError('');
                $this->io->writeError(array(
                    '<error>'.$e->getMessage().'</error>',
                    '<error>Retrying with degraded mode, check https://getcomposer.org/doc/articles/troubleshooting.md#degraded-mode for more info</error>',
                ));

return $this->get($this->originUrl, $this->fileUrl, $additionalOptions, $this->fileName, $this->progress);
            }

throw $e;
        }

$statusCode = null;
        $contentType = null;
        $locationHeader = null;
        if (!empty($http_response_header[0])) {
            $statusCode = self::findStatusCode($http_response_header);
            $contentType = Response::findHeaderValue($http_response_header, 'content-type');
            $locationHeader = Response::findHeaderValue($http_response_header, 'location');
        }

// check for bitbucket login page asking to authenticate
        if ($originUrl === 'bitbucket.org'
            && !$this->authHelper->isPublicBitBucketDownload($fileUrl)
            && substr($fileUrl, -4) === '.zip'
            && (!$locationHeader || substr(parse_url($locationHeader, PHP_URL_PATH), -4) !== '.zip')
            && $contentType && Preg::isMatch('{^text/html\b}i', $contentType)
        ) {
            $result = false;
            if ($retryAuthFailure) {
                $this->promptAuthAndRetry(401);
            }
        }

// check for gitlab 404 when downloading archives
        if ($statusCode === 404
            && in_array($originUrl, $this->config->get('gitlab-domains'), true)
            && false !== strpos($fileUrl, 'archive.zip')
        ) {
            $result = false;
            if ($retryAuthFailure) {
                $this->promptAuthAndRetry(401);
            }
        }

// handle 3xx redirects, 304 Not Modified is excluded
        $hasFollowedRedirect = false;
        if ($statusCode >= 300 && $statusCode <= 399 && $statusCode !== 304 && $this->redirects < $this->maxRedirects) {
            $hasFollowedRedirect = true;
            $result = $this->handleRedirect($http_response_header, $additionalOptions, $result);
        }

// fail 4xx and 5xx responses and capture the response
        if ($statusCode && $statusCode >= 400 && $statusCode <= 599) {
            if (!$this->retry) {
                if ($this->progress && !$isRedirect) {
                    $this->io->overwriteError("Downloading (<error>failed</error>)", false);
                }

$e = new TransportException('The "'.$this->fileUrl.'" file could not be downloaded ('.$http_response_header[0].')', $statusCode);
                $e->setHeaders($http_response_header);
                $e->setResponse($this->decodeResult($result, $http_response_header));
                $e->setStatusCode($statusCode);
                throw $e;
            }
            $result = false;
        }

if ($this->progress && !$this->retry && !$isRedirect) {
            $this->io->overwriteError("Downloading (".($result === false ? '<error>failed</error>' : '<comment>100%</comment>').")", false);
        }

// decode gzip
        if ($result && extension_loaded('zlib') && strpos($fileUrl, 'http') === 0 && !$hasFollowedRedirect) {
            try {
                $result = $this->decodeResult($result, $http_response_header);
            } catch (\Exception $e) {
                if ($this->degradedMode) {
                    throw $e;
                }

$this->degradedMode = true;
                $this->io->writeError(array(
                    '',
                    '<error>Failed to decode response: '.$e->getMessage().'</error>',
                    '<error>Retrying with degraded mode, check https://getcomposer.org/doc/articles/troubleshooting.md#degraded-mode for more info</error>',
                ));

return $this->get($this->originUrl, $this->fileUrl, $additionalOptions, $this->fileName, $this->progress);
            }
        }

// handle copy command if download was successful
        if (false !== $result && null !== $fileName && !$isRedirect) {
            if ('' === $result) {
                throw new TransportException('"'.$this->fileUrl.'" appears broken, and returned an empty 200 response');
            }

$errorMessage = '';
            set_error_handler(function ($code, $msg) use (&$errorMessage) {
                if ($errorMessage) {
                    $errorMessage .= "\n";
                }
                $errorMessage .= Preg::replace('{^file_put_contents$.*?$: }', '', $msg);

return true;
            });
            $result = (bool) file_put_contents($fileName, $result);
            restore_error_handler();
            if (false === $result) {
                throw new TransportException('The "'.$this->fileUrl.'" file could not be written to '.$fileName.': '.$errorMessage);
            }
        }

// Handle SSL cert match issues
        if (false === $result && false !== strpos($errorMessage, 'Peer certificate') && PHP_VERSION_ID < 50600) {
            // Certificate name error, PHP doesn't support subjectAltName on PHP < 5.6
            // The procedure to handle sAN for older PHP's is:
            //
            // 1. Open socket to remote server and fetch certificate (disabling peer
            //    validation because PHP errors without giving up the certificate.)
            //
            // 2. Verifying the domain in the URL against the names in the sAN field.
            //    If there is a match record the authority [host/port], certificate
            //    common name, and certificate fingerprint.
            //
            // 3. Retry the original request but changing the CN_match parameter to
            //    the common name extracted from the certificate in step 2.
            //
            // 4. To prevent any attempt at being hoodwinked by switching the
            //    certificate between steps 2 and 3 the fingerprint of the certificate
            //    presented in step 3 is compared against the one recorded in step 2.
            if (CaBundle::isOpensslParseSafe()) {
                $certDetails = $this->getCertificateCnAndFp($this->fileUrl, $options);

if ($certDetails) {
                    $this->peerCertificateMap[$this->getUrlAuthority($this->fileUrl)] = $certDetails;

$this->retry = true;
                }
            } else {
                $this->io->writeError('');
                $this->io->writeError(sprintf(
                    '<error>Your version of PHP, %s, is affected by CVE-2013-6420 and cannot safely perform certificate validation, we strongly suggest you upgrade.</error>',
                    PHP_VERSION
                ));
            }
        }

if ($this->retry) {
            $this->retry = false;

$result = $this->get($this->originUrl, $this->fileUrl, $additionalOptions, $this->fileName, $this->progress);

if ($this->storeAuth) {
                $this->authHelper->storeAuth($this->originUrl, $this->storeAuth);
                $this->storeAuth = false;
            }

return $result;
        }

if (false === $result) {
            $e = new TransportException('The "'.$this->fileUrl.'" file could not be downloaded: '.$errorMessage, $errorCode);
            if (!empty($http_response_header[0])) {
                $e->setHeaders($http_response_header);
            }

if (!$this->degradedMode && false !== strpos($e->getMessage(), 'Operation timed out')) {
                $this->degradedMode = true;
                $this->io->writeError('');
                $this->io->writeError(array(
                    '<error>'.$e->getMessage().'</error>',
                    '<error>Retrying with degraded mode, check https://getcomposer.org/doc/articles/troubleshooting.md#degraded-mode for more info</error>',
                ));

return $this->get($this->originUrl, $this->fileUrl, $additionalOptions, $this->fileName, $this->progress);
            }

throw $e;
        }

if (!empty($http_response_header[0])) {
            $this->lastHeaders = $http_response_header;
        }

return $result;
    }

/**
     * Get contents of remote URL.
     *
     * @param string   $originUrl   The origin URL
     * @param string   $fileUrl     The file URL
     * @param resource $context     The stream context
     * @param string[] $responseHeaders
     * @param int      $maxFileSize The maximum allowed file size
     *
     * @return string|false The response contents or false on failure
     */
    protected function getRemoteContents($originUrl, $fileUrl, $context, array &$responseHeaders = null, $maxFileSize = null)
    {
        $result = false;

try {
            $e = null;
            if ($maxFileSize !== null) {
                $result = file_get_contents($fileUrl, false, $context, 0, $maxFileSize);
            } else {
                // passing `null` to file_get_contents will convert `null` to `0` and return 0 bytes
                $result = file_get_contents($fileUrl, false, $context);
            }
        } catch (\Exception $e) {
        } catch (\Throwable $e) {
        }

if ($maxFileSize !== null && Platform::strlen($result) >= $maxFileSize) {
            throw new MaxFileSizeExceededException('Maximum allowed download size reached. Downloaded ' . Platform::strlen($result) . ' of allowed ' .  $maxFileSize . ' bytes');
        }

// https://www.php.net/manual/en/reserved.variables.httpresponseheader.php
        $responseHeaders = isset($http_response_header) ? $http_response_header : array();

if (null !== $e) {
            throw $e;
        }

return $result;
    }

/**
     * Get notification action.
     *
     * @param int    $notificationCode The notification code
     * @param int    $severity         The severity level
     * @param string $message          The message
     * @param int    $messageCode      The message code
     * @param int    $bytesTransferred The loaded size
     * @param int    $bytesMax         The total size
     *
     * @return void
     *
     * @throws TransportException
     */
    protected function callbackGet($notificationCode, $severity, $message, $messageCode, $bytesTransferred, $bytesMax)
    {
        switch ($notificationCode) {
            case STREAM_NOTIFY_FAILURE:
                if (400 === $messageCode) {
                    // This might happen if your host is secured by ssl client certificate authentication
                    // but you do not send an appropriate certificate
                    throw new TransportException("The '" . $this->fileUrl . "' URL could not be accessed: " . $message, $messageCode);
                }
                break;

case STREAM_NOTIFY_FILE_SIZE_IS:
                $this->bytesMax = $bytesMax;
                break;

case STREAM_NOTIFY_PROGRESS:
                if ($this->bytesMax > 0 && $this->progress) {
                    $progression = min(100, (int) round($bytesTransferred / $this->bytesMax * 100));

if ((0 === $progression % 5) && 100 !== $progression && $progression !== $this->lastProgress) {
                        $this->lastProgress = $progression;
                        $this->io->overwriteError("Downloading (<comment>$progression%</comment>)", false);
                    }
                }
                break;

default:
                break;
        }
    }

/**
     * @param positive-int $httpStatus
     * @param string|null  $reason
     * @param string[]     $headers
     *
     * @return void
     */
    protected function promptAuthAndRetry($httpStatus, $reason = null, $headers = array())
    {
        $result = $this->authHelper->promptAuthIfNeeded($this->fileUrl, $this->originUrl, $httpStatus, $reason, $headers);

$this->storeAuth = $result['storeAuth'];
        $this->retry = $result['retry'];

if ($this->retry) {
            throw new TransportException('RETRY');
        }
    }

/**
     * @param string  $originUrl
     * @param mixed[] $additionalOptions
     *
     * @return mixed[]
     */
    protected function getOptionsForUrl($originUrl, $additionalOptions)
    {
        $tlsOptions = array();

// Setup remaining TLS options - the matching may need monitoring, esp. www vs none in CN
        if ($this->disableTls === false && PHP_VERSION_ID < 50600 && !stream_is_local($this->fileUrl)) {
            $host = parse_url($this->fileUrl, PHP_URL_HOST);

if (PHP_VERSION_ID < 50304) {
                // PHP < 5.3.4 does not support follow_location, for those people
                // do some really nasty hard coded transformations. These will
                // still breakdown if the site redirects to a domain we don't
                // expect.

if ($host === 'github.com' || $host === 'api.github.com') {
                    $host = '*.github.com';
                }
            }

$tlsOptions['ssl']['CN_match'] = $host;
            $tlsOptions['ssl']['SNI_server_name'] = $host;

$urlAuthority = $this->getUrlAuthority($this->fileUrl);

if (isset($this->peerCertificateMap[$urlAuthority])) {
                // Handle subjectAltName on lesser PHP's.
                $certMap = $this->peerCertificateMap[$urlAuthority];

$this->io->writeError('', true, IOInterface::DEBUG);
                $this->io->writeError(sprintf(
                    'Using <info>%s</info> as CN for subjectAltName enabled host <info>%s</info>',
                    $certMap['cn'],
                    $urlAuthority
                ), true, IOInterface::DEBUG);

$tlsOptions['ssl']['CN_match'] = $certMap['cn'];
                $tlsOptions['ssl']['peer_fingerprint'] = $certMap['fp'];
            } elseif (!CaBundle::isOpensslParseSafe() && $host === 'repo.packagist.org') {
                // handle subjectAltName for packagist.org's repo domain on very old PHPs
                $tlsOptions['ssl']['CN_match'] = 'packagist.org';
            }
        }

$headers = array();

if (extension_loaded('zlib')) {
            $headers[] = 'Accept-Encoding: gzip';
        }

$options = array_replace_recursive($this->options, $tlsOptions, $additionalOptions);
        if (!$this->degradedMode) {
            // degraded mode disables HTTP/1.1 which causes issues with some bad
            // proxies/software due to the use of chunked encoding
            $options['http']['protocol_version'] = 1.1;
            $headers[] = 'Connection: close';
        }

$headers = $this->authHelper->addAuthenticationHeader($headers, $originUrl, $this->fileUrl);

$options['http']['follow_location'] = 0;

if (isset($options['http']['header']) && !is_array($options['http']['header'])) {
            $options['http']['header'] = explode("\r\n", trim($options['http']['header'], "\r\n"));
        }
        foreach ($headers as $header) {
            $options['http']['header'][] = $header;
        }

return $options;
    }

/**
     * @param string[]     $http_response_header
     * @param mixed[]      $additionalOptions
     * @param string|false $result
     *
     * @return bool|string
     */
    private function handleRedirect(array $http_response_header, array $additionalOptions, $result)
    {
        if ($locationHeader = Response::findHeaderValue($http_response_header, 'location')) {
            if (parse_url($locationHeader, PHP_URL_SCHEME)) {
                // Absolute URL; e.g. https://example.com/composer
                $targetUrl = $locationHeader;
            } elseif (parse_url($locationHeader, PHP_URL_HOST)) {
                // Scheme relative; e.g. //example.com/foo
                $targetUrl = $this->scheme.':'.$locationHeader;
            } elseif ('/' === $locationHeader[0]) {
                // Absolute path; e.g. /foo
                $urlHost = parse_url($this->fileUrl, PHP_URL_HOST);

// Replace path using hostname as an anchor.
                $targetUrl = Preg::replace('{^(.+(?://|@)'.preg_quote($urlHost).'(?::\d+)?)(?:[/\?].*)?$}', '\1'.$locationHeader, $this->fileUrl);
            } else {
                // Relative path; e.g. foo
                // This actually differs from PHP which seems to add duplicate slashes.
                $targetUrl = Preg::replace('{^(.+/)[^/?]*(?:\?.*)?$}', '\1'.$locationHeader, $this->fileUrl);
            }
        }

if (!empty($targetUrl)) {
            $this->redirects++;

$this->io->writeError('', true, IOInterface::DEBUG);
            $this->io->writeError(sprintf('Following redirect (%u) %s', $this->redirects, Url::sanitize($targetUrl)), true, IOInterface::DEBUG);

$additionalOptions['redirects'] = $this->redirects;

return $this->get(parse_url($targetUrl, PHP_URL_HOST), $targetUrl, $additionalOptions, $this->fileName, $this->progress);
        }

if (!$this->retry) {
            $e = new TransportException('The "'.$this->fileUrl.'" file could not be downloaded, got redirect without Location ('.$http_response_header[0].')');
            $e->setHeaders($http_response_header);
            $e->setResponse($this->decodeResult($result, $http_response_header));

throw $e;
        }

return false;
    }

/**
     * Fetch certificate common name and fingerprint for validation of SAN.
     *
     * @todo Remove when PHP 5.6 is minimum supported version.
     *
     * @param string  $url
     * @param mixed[] $options
     *
     * @return ?array{cn: string, fp: string}
     */
    private function getCertificateCnAndFp($url, $options)
    {
        if (PHP_VERSION_ID >= 50600) {
            throw new \BadMethodCallException(sprintf(
                '%s must not be used on PHP >= 5.6',
                __METHOD__
            ));
        }

$context = StreamContextFactory::getContext($url, $options, array('options' => array(
            'ssl' => array(
                'capture_peer_cert' => true,
                'verify_peer' => false, // Yes this is fucking insane! But PHP is lame.
            ), ),
        ));

// Ideally this would just use stream_socket_client() to avoid sending a
        // HTTP request but that does not capture the certificate.
        if (false === $handle = @fopen($url, 'rb', false, $context)) {
            return null;
        }

// Close non authenticated connection without reading any content.
        fclose($handle);
        $handle = null;

$params = stream_context_get_params($context);

if (!empty($params['options']['ssl']['peer_certificate'])) {
            $peerCertificate = $params['options']['ssl']['peer_certificate'];

if (TlsHelper::checkCertificateHost($peerCertificate, parse_url($url, PHP_URL_HOST), $commonName)) {
                return array(
                    'cn' => $commonName,
                    'fp' => TlsHelper::getCertificateFingerprint($peerCertificate),
                );
            }
        }

return null;
    }

/**
     * @param string $url
     *
     * @return string
     */
    private function getUrlAuthority($url)
    {
        $defaultPorts = array(
            'ftp' => 21,
            'http' => 80,
            'https' => 443,
            'ssh2.sftp' => 22,
            'ssh2.scp' => 22,
        );

$scheme = parse_url($url, PHP_URL_SCHEME);

if (!isset($defaultPorts[$scheme])) {
            throw new \InvalidArgumentException(sprintf(
                'Could not get default port for unknown scheme: %s',
                $scheme
            ));
        }

$defaultPort = $defaultPorts[$scheme];
        $port = parse_url($url, PHP_URL_PORT) ?: $defaultPort;

return parse_url($url, PHP_URL_HOST).':'.$port;
    }

/**
     * @param string|false $result
     * @param string[]     $http_response_header
     *
     * @return string|null
     */
    private function decodeResult($result, $http_response_header)
    {
        // decode gzip
        if ($result && extension_loaded('zlib')) {
            $contentEncoding = Response::findHeaderValue($http_response_header, 'content-encoding');
            $decode = $contentEncoding && 'gzip' === strtolower($contentEncoding);

if ($decode) {
                if (PHP_VERSION_ID >= 50400) {
                    $result = zlib_decode($result);
                } else {
                    // work around issue with gzuncompress & co that do not work with all gzip checksums
                    $result = file_get_contents('compress.zlib://data:application/octet-stream;base64,'.base64_encode($result));
                }

if ($result === false) {
                    throw new TransportException('Failed to decode zlib stream');
                }
            }
        }

return $this->normalizeResult($result);
    }

/**
     * @param string|false $result
     *
     * @return string|null
     */
    private function normalizeResult($result)
    {
        if ($result === false) {
            return null;
        }

return $result;
    }
}
<?php

namespace Composer\Util;

use Composer\Config;
use Composer\IO\IOInterface;
use Composer\Downloader\TransportException;
use Composer\Pcre\Preg;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class AuthHelper
{
    /** @var IOInterface */
    protected $io;
    /** @var Config */
    protected $config;
    /** @var array<string, string> Map of origins to message displayed */
    private $displayedOriginAuthentications = array();

public function __construct(IOInterface $io, Config $config)
    {
        $this->io = $io;
        $this->config = $config;
    }

/**
     * @param string      $origin
     * @param string|bool $storeAuth
     *
     * @return void
     */
    public function storeAuth($origin, $storeAuth)
    {
        $store = false;
        $configSource = $this->config->getAuthConfigSource();
        if ($storeAuth === true) {
            $store = $configSource;
        } elseif ($storeAuth === 'prompt') {
            $answer = $this->io->askAndValidate(
                'Do you want to store credentials for '.$origin.' in '.$configSource->getName().' ? [Yn] ',
                function ($value) {
                    $input = strtolower(substr(trim($value), 0, 1));
                    if (in_array($input, array('y','n'))) {
                        return $input;
                    }
                    throw new \RuntimeException('Please answer (y)es or (n)o');
                },
                null,
                'y'
            );

if ($answer === 'y') {
                $store = $configSource;
            }
        }
        if ($store) {
            $store->addConfigSetting(
                'http-basic.'.$origin,
                $this->io->getAuthentication($origin)
            );
        }
    }

/**
     * @param  string      $url
     * @param  string      $origin
     * @param  int         $statusCode HTTP status code that triggered this call
     * @param  string|null $reason     a message/description explaining why this was called
     * @param  string[]    $headers
     * @return array|null  containing retry (bool) and storeAuth (string|bool) keys, if retry is true the request should be
     *                                retried, if storeAuth is true then on a successful retry the authentication should be persisted to auth.json
     * @phpstan-return ?array{retry: bool, storeAuth: string|bool}
     */
    public function promptAuthIfNeeded($url, $origin, $statusCode, $reason = null, $headers = array())
    {
        $storeAuth = false;

if (in_array($origin, $this->config->get('github-domains'), true)) {
            $gitHubUtil = new GitHub($this->io, $this->config, null);
            $message = "\n";

$rateLimited = $gitHubUtil->isRateLimited($headers);
            $requiresSso = $gitHubUtil->requiresSso($headers);

if ($requiresSso) {
                $ssoUrl = $gitHubUtil->getSsoUrl($headers);
                $message = 'GitHub API token requires SSO authorization. Authorize this token at ' . $ssoUrl . "\n";
                $this->io->writeError($message);
                if (!$this->io->isInteractive()) {
                    throw new TransportException('Could not authenticate against ' . $origin, 403);
                }
                $this->io->ask('After authorizing your token, confirm that you would like to retry the request');

return array('retry' => true, 'storeAuth' => $storeAuth);
            }

if ($rateLimited) {
                $rateLimit = $gitHubUtil->getRateLimit($headers);
                if ($this->io->hasAuthentication($origin)) {
                    $message = 'Review your configured GitHub OAuth token or enter a new one to go over the API rate limit.';
                } else {
                    $message = 'Create a GitHub OAuth token to go over the API rate limit.';
                }

$message = sprintf(
                    'GitHub API limit (%d calls/hr) is exhausted, could not fetch '.$url.'. '.$message.' You can also wait until %s for the rate limit to reset.',
                    $rateLimit['limit'],
                    $rateLimit['reset']
                )."\n";
            } else {
                $message .= 'Could not fetch '.$url.', please ';
                if ($this->io->hasAuthentication($origin)) {
                    $message .= 'review your configured GitHub OAuth token or enter a new one to access private repos';
                } else {
                    $message .= 'create a GitHub OAuth token to access private repos';
                }
            }

if (!$gitHubUtil->authorizeOAuth($origin)
                && (!$this->io->isInteractive() || !$gitHubUtil->authorizeOAuthInteractively($origin, $message))
            ) {
                throw new TransportException('Could not authenticate against '.$origin, 401);
            }
        } elseif (in_array($origin, $this->config->get('gitlab-domains'), true)) {
            $message = "\n".'Could not fetch '.$url.', enter your ' . $origin . ' credentials ' .($statusCode === 401 ? 'to access private repos' : 'to go over the API rate limit');
            $gitLabUtil = new GitLab($this->io, $this->config, null);

if ($this->io->hasAuthentication($origin)) {
                $auth = $this->io->getAuthentication($origin);
                if (in_array($auth['password'], array('gitlab-ci-token', 'private-token', 'oauth2'), true)) {
                    throw new TransportException("Invalid credentials for '" . $url . "', aborting.", $statusCode);
                }
            }

if (!$gitLabUtil->authorizeOAuth($origin)
                && (!$this->io->isInteractive() || !$gitLabUtil->authorizeOAuthInteractively(parse_url($url, PHP_URL_SCHEME), $origin, $message))
            ) {
                throw new TransportException('Could not authenticate against '.$origin, 401);
            }
        } elseif ($origin === 'bitbucket.org' || $origin === 'api.bitbucket.org') {
            $askForOAuthToken = true;
            $origin = 'bitbucket.org';
            if ($this->io->hasAuthentication($origin)) {
                $auth = $this->io->getAuthentication($origin);
                if ($auth['username'] !== 'x-token-auth') {
                    $bitbucketUtil = new Bitbucket($this->io, $this->config);
                    $accessToken = $bitbucketUtil->requestToken($origin, $auth['username'], $auth['password']);
                    if (!empty($accessToken)) {
                        $this->io->setAuthentication($origin, 'x-token-auth', $accessToken);
                        $askForOAuthToken = false;
                    }
                } else {
                    throw new TransportException('Could not authenticate against ' . $origin, 401);
                }
            }

if ($askForOAuthToken) {
                $message = "\n".'Could not fetch ' . $url . ', please create a bitbucket OAuth token to ' . (($statusCode === 401 || $statusCode === 403) ? 'access private repos' : 'go over the API rate limit');
                $bitBucketUtil = new Bitbucket($this->io, $this->config);
                if (!$bitBucketUtil->authorizeOAuth($origin)
                    && (!$this->io->isInteractive() || !$bitBucketUtil->authorizeOAuthInteractively($origin, $message))
                ) {
                    throw new TransportException('Could not authenticate against ' . $origin, 401);
                }
            }
        } else {
            // 404s are only handled for github
            if ($statusCode === 404) {
                return null;
            }

// fail if the console is not interactive
            if (!$this->io->isInteractive()) {
                if ($statusCode === 401) {
                    $message = "The '" . $url . "' URL required authentication.\nYou must be using the interactive console to authenticate";
                } elseif ($statusCode === 403) {
                    $message = "The '" . $url . "' URL could not be accessed: " . $reason;
                } else {
                    $message = "Unknown error code '" . $statusCode . "', reason: " . $reason;
                }

throw new TransportException($message, $statusCode);
            }
            // fail if we already have auth
            if ($this->io->hasAuthentication($origin)) {
                throw new TransportException("Invalid credentials for '" . $url . "', aborting.", $statusCode);
            }

$this->io->writeError('    Authentication required (<info>'.$origin.'</info>):');
            $username = $this->io->ask('      Username: ');
            $password = $this->io->askAndHideAnswer('      Password: ');
            $this->io->setAuthentication($origin, $username, $password);
            $storeAuth = $this->config->get('store-auths');
        }

return array('retry' => true, 'storeAuth' => $storeAuth);
    }

/**
     * @param string[] $headers
     * @param string   $origin
     * @param string   $url
     *
     * @return string[] updated headers array
     */
    public function addAuthenticationHeader(array $headers, $origin, $url)
    {
        if ($this->io->hasAuthentication($origin)) {
            $authenticationDisplayMessage = null;
            $auth = $this->io->getAuthentication($origin);
            if ($auth['password'] === 'bearer') {
                $headers[] = 'Authorization: Bearer '.$auth['username'];
            } elseif ('github.com' === $origin && 'x-oauth-basic' === $auth['password']) {
                // only add the access_token if it is actually a github API URL
                if (Preg::isMatch('{^https?://api\.github\.com/}', $url)) {
                    $headers[] = 'Authorization: token '.$auth['username'];
                    $authenticationDisplayMessage = 'Using GitHub token authentication';
                }
            } elseif (
                in_array($origin, $this->config->get('gitlab-domains'), true)
                && in_array($auth['password'], array('oauth2', 'private-token', 'gitlab-ci-token'), true)
            ) {
                if ($auth['password'] === 'oauth2') {
                    $headers[] = 'Authorization: Bearer '.$auth['username'];
                    $authenticationDisplayMessage = 'Using GitLab OAuth token authentication';
                } else {
                    $headers[] = 'PRIVATE-TOKEN: '.$auth['username'];
                    $authenticationDisplayMessage = 'Using GitLab private token authentication';
                }
            } elseif (
                'bitbucket.org' === $origin
                && $url !== Bitbucket::OAUTH2_ACCESS_TOKEN_URL
                && 'x-token-auth' === $auth['username']
            ) {
                if (!$this->isPublicBitBucketDownload($url)) {
                    $headers[] = 'Authorization: Bearer ' . $auth['password'];
                    $authenticationDisplayMessage = 'Using Bitbucket OAuth token authentication';
                }
            } else {
                $authStr = base64_encode($auth['username'] . ':' . $auth['password']);
                $headers[] = 'Authorization: Basic '.$authStr;
                $authenticationDisplayMessage = 'Using HTTP basic authentication with username "' . $auth['username'] . '"';
            }

if ($authenticationDisplayMessage && (!isset($this->displayedOriginAuthentications[$origin]) || $this->displayedOriginAuthentications[$origin] !== $authenticationDisplayMessage)) {
                $this->io->writeError($authenticationDisplayMessage, true, IOInterface::DEBUG);
                $this->displayedOriginAuthentications[$origin] = $authenticationDisplayMessage;
            }
        } elseif (in_array($origin, array('api.bitbucket.org', 'api.github.com'), true)) {
            return $this->addAuthenticationHeader($headers, str_replace('api.', '', $origin), $url);
        }

return $headers;
    }

/**
     * @link https://github.com/composer/composer/issues/5584
     *
     * @param string $urlToBitBucketFile URL to a file at bitbucket.org.
     *
     * @return bool Whether the given URL is a public BitBucket download which requires no authentication.
     */
    public function isPublicBitBucketDownload($urlToBitBucketFile)
    {
        $domain = parse_url($urlToBitBucketFile, PHP_URL_HOST);
        if (strpos($domain, 'bitbucket.org') === false) {
            // Bitbucket downloads are hosted on amazonaws.
            // We do not need to authenticate there at all
            return true;
        }

$path = parse_url($urlToBitBucketFile, PHP_URL_PATH);

// Path for a public download follows this pattern /{user}/{repo}/downloads/{whatever}
        // {@link https://blog.bitbucket.org/2009/04/12/new-feature-downloads/}
        $pathParts = explode('/', $path);

return count($pathParts) >= 4 && $pathParts[3] == 'downloads';
    }
}
<?php

namespace Composer\Util;

use Composer\Package\Loader\ArrayLoader;
use Composer\Package\Loader\ValidatingArrayLoader;
use Composer\Package\Loader\InvalidPackageException;
use Composer\Json\JsonValidationException;
use Composer\IO\IOInterface;
use Composer\Json\JsonFile;
use Composer\Pcre\Preg;
use Composer\Spdx\SpdxLicenses;

/**
 * Validates a composer configuration.
 *
 * @author Robert Schönthal <seroscho@googlemail.com>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class ConfigValidator
{
    const CHECK_VERSION = 1;

/** @var IOInterface */
    private $io;

public function __construct(IOInterface $io)
    {
        $this->io = $io;
    }

/**
     * Validates the config, and returns the result.
     *
     * @param string $file                       The path to the file
     * @param int    $arrayLoaderValidationFlags Flags for ArrayLoader validation
     * @param int    $flags                      Flags for validation
     *
     * @return array{list<string>, list<string>, list<string>} a triple containing the errors, publishable errors, and warnings
     */
    public function validate($file, $arrayLoaderValidationFlags = ValidatingArrayLoader::CHECK_ALL, $flags = self::CHECK_VERSION)
    {
        $errors = array();
        $publishErrors = array();
        $warnings = array();

// validate json schema
        $laxValid = false;
        try {
            $json = new JsonFile($file, null, $this->io);
            $manifest = $json->read();

$json->validateSchema(JsonFile::LAX_SCHEMA);
            $laxValid = true;
            $json->validateSchema();
        } catch (JsonValidationException $e) {
            foreach ($e->getErrors() as $message) {
                if ($laxValid) {
                    $publishErrors[] = $message;
                } else {
                    $errors[] = $message;
                }
            }
        } catch (\Exception $e) {
            $errors[] = $e->getMessage();

return array($errors, $publishErrors, $warnings);
        }

// validate actual data
        if (empty($manifest['license'])) {
            $warnings[] = 'No license specified, it is recommended to do so. For closed-source software you may use "proprietary" as license.';
        } else {
            $licenses = (array) $manifest['license'];

// strip proprietary since it's not a valid SPDX identifier, but is accepted by composer
            foreach ($licenses as $key => $license) {
                if ('proprietary' === $license) {
                    unset($licenses[$key]);
                }
            }

$licenseValidator = new SpdxLicenses();
            foreach ($licenses as $license) {
                $spdxLicense = $licenseValidator->getLicenseByIdentifier($license);
                if ($spdxLicense && $spdxLicense[3]) {
                    if (Preg::isMatch('{^[AL]?GPL-[123](\.[01])?\+$}i', $license)) {
                        $warnings[] = sprintf(
                            'License "%s" is a deprecated SPDX license identifier, use "'.str_replace('+', '', $license).'-or-later" instead',
                            $license
                        );
                    } elseif (Preg::isMatch('{^[AL]?GPL-[123](\.[01])?$}i', $license)) {
                        $warnings[] = sprintf(
                            'License "%s" is a deprecated SPDX license identifier, use "'.$license.'-only" or "'.$license.'-or-later" instead',
                            $license
                        );
                    } else {
                        $warnings[] = sprintf(
                            'License "%s" is a deprecated SPDX license identifier, see https://spdx.org/licenses/',
                            $license
                        );
                    }
                }
            }
        }

if (($flags & self::CHECK_VERSION) && isset($manifest['version'])) {
            $warnings[] = 'The version field is present, it is recommended to leave it out if the package is published on Packagist.';
        }

if (!empty($manifest['name']) && Preg::isMatch('{[A-Z]}', $manifest['name'])) {
            $suggestName = Preg::replace('{(?:([a-z])([A-Z])|([A-Z])([A-Z][a-z]))}', '\\1\\3-\\2\\4', $manifest['name']);
            $suggestName = strtolower($suggestName);

$publishErrors[] = sprintf(
                'Name "%s" does not match the best practice (e.g. lower-cased/with-dashes). We suggest using "%s" instead. As such you will not be able to submit it to Packagist.',
                $manifest['name'],
                $suggestName
            );
        }

if (!empty($manifest['type']) && $manifest['type'] == 'composer-installer') {
            $warnings[] = "The package type 'composer-installer' is deprecated. Please distribute your custom installers as plugins from now on. See https://getcomposer.org/doc/articles/plugins.md for plugin documentation.";
        }

// check for require-dev overrides
        if (isset($manifest['require'], $manifest['require-dev'])) {
            $requireOverrides = array_intersect_key($manifest['require'], $manifest['require-dev']);

if (!empty($requireOverrides)) {
                $plural = (count($requireOverrides) > 1) ? 'are' : 'is';
                $warnings[] = implode(', ', array_keys($requireOverrides)). " {$plural} required both in require and require-dev, this can lead to unexpected behavior";
            }
        }

// check for meaningless provide/replace satisfying requirements
        foreach (array('provide', 'replace') as $linkType) {
            if (isset($manifest[$linkType])) {
                foreach (array('require', 'require-dev') as $requireType) {
                    if (isset($manifest[$requireType])) {
                        foreach ($manifest[$linkType] as $provide => $constraint) {
                            if (isset($manifest[$requireType][$provide])) {
                                $warnings[] = 'The package ' . $provide . ' in '.$requireType.' is also listed in '.$linkType.' which satisfies the requirement. Remove it from '.$linkType.' if you wish to install it.';
                            }
                        }
                    }
                }
            }
        }

// check for commit references
        $require = isset($manifest['require']) ? $manifest['require'] : array();
        $requireDev = isset($manifest['require-dev']) ? $manifest['require-dev'] : array();
        $packages = array_merge($require, $requireDev);
        foreach ($packages as $package => $version) {
            if (Preg::isMatch('/#/', $version)) {
                $warnings[] = sprintf(
                    'The package "%s" is pointing to a commit-ref, this is bad practice and can cause unforeseen issues.',
                    $package
                );
            }
        }

// report scripts-descriptions for non-existent scripts
        $scriptsDescriptions = isset($manifest['scripts-descriptions']) ? $manifest['scripts-descriptions'] : array();
        $scripts = isset($manifest['scripts']) ? $manifest['scripts'] : array();
        foreach ($scriptsDescriptions as $scriptName => $scriptDescription) {
            if (!array_key_exists($scriptName, $scripts)) {
                $warnings[] = sprintf(
                    'Description for non-existent script "%s" found in "scripts-descriptions"',
                    $scriptName
                );
            }
        }

// check for empty psr-0/psr-4 namespace prefixes
        if (isset($manifest['autoload']['psr-0'][''])) {
            $warnings[] = "Defining autoload.psr-0 with an empty namespace prefix is a bad idea for performance";
        }
        if (isset($manifest['autoload']['psr-4'][''])) {
            $warnings[] = "Defining autoload.psr-4 with an empty namespace prefix is a bad idea for performance";
        }

$loader = new ValidatingArrayLoader(new ArrayLoader(), true, null, $arrayLoaderValidationFlags);
        try {
            if (!isset($manifest['version'])) {
                $manifest['version'] = '1.0.0';
            }
            if (!isset($manifest['name'])) {
                $manifest['name'] = 'dummy/dummy';
            }
            $loader->load($manifest);
        } catch (InvalidPackageException $e) {
            $errors = array_merge($errors, $e->getErrors());
        }

$warnings = array_merge($warnings, $loader->getWarnings());

return array($errors, $publishErrors, $warnings);
    }
}
<?php

namespace Composer\Util;

/**
 * Temporarily suppress PHP error reporting, usually warnings and below.
 *
 * @author Niels Keurentjes <niels.keurentjes@omines.com>
 */
class Silencer
{
    /**
     * @var int[] Unpop stack
     */
    private static $stack = array();

/**
     * Suppresses given mask or errors.
     *
     * @param  int|null $mask Error levels to suppress, default value NULL indicates all warnings and below.
     * @return int      The old error reporting level.
     */
    public static function suppress($mask = null)
    {
        if (!isset($mask)) {
            $mask = E_WARNING | E_NOTICE | E_USER_WARNING | E_USER_NOTICE | E_DEPRECATED | E_USER_DEPRECATED | E_STRICT;
        }
        $old = error_reporting();
        self::$stack[] = $old;
        error_reporting($old & ~$mask);

return $old;
    }

/**
     * Restores a single state.
     *
     * @return void
     */
    public static function restore()
    {
        if (!empty(self::$stack)) {
            error_reporting(array_pop(self::$stack));
        }
    }

/**
     * Calls a specified function while silencing warnings and below.
     *
     * Future improvement: when PHP requirements are raised add Callable type hint (5.4) and variadic parameters (5.6)
     *
     * @param  callable   $callable Function to execute.
     * @throws \Exception Any exceptions from the callback are rethrown.
     * @return mixed      Return value of the callback.
     */
    public static function call($callable /*, ...$parameters */)
    {
        try {
            self::suppress();
            $result = call_user_func_array($callable, array_slice(func_get_args(), 1));
            self::restore();

return $result;
        } catch (\Exception $e) {
            // Use a finally block for this when requirements are raised to PHP 5.5
            self::restore();
            throw $e;
        }
    }
}
<?php

namespace Composer\Util;

use Composer\CaBundle\CaBundle;
use Composer\Pcre\Preg;

/**
 * @author Chris Smith <chris@cs278.org>
 */
final class TlsHelper
{
    /**
     * Match hostname against a certificate.
     *
     * @param mixed  $certificate X.509 certificate
     * @param string $hostname    Hostname in the URL
     * @param string $cn          Set to the common name of the certificate iff match found
     *
     * @return bool
     */
    public static function checkCertificateHost($certificate, $hostname, &$cn = null)
    {
        $names = self::getCertificateNames($certificate);

if (empty($names)) {
            return false;
        }

$combinedNames = array_merge($names['san'], array($names['cn']));
        $hostname = strtolower($hostname);

foreach ($combinedNames as $certName) {
            $matcher = self::certNameMatcher($certName);

if ($matcher && $matcher($hostname)) {
                $cn = $names['cn'];

return true;
            }
        }

return false;
    }

/**
     * Extract DNS names out of an X.509 certificate.
     *
     * @param mixed $certificate X.509 certificate
     *
     * @return array{cn: string, san: string[]}|null
     */
    public static function getCertificateNames($certificate)
    {
        if (is_array($certificate)) {
            $info = $certificate;
        } elseif (CaBundle::isOpensslParseSafe()) {
            $info = openssl_x509_parse($certificate, false);
        }

if (!isset($info['subject']['commonName'])) {
            return null;
        }

$commonName = strtolower($info['subject']['commonName']);
        $subjectAltNames = array();

if (isset($info['extensions']['subjectAltName'])) {
            $subjectAltNames = Preg::split('{\s*,\s*}', $info['extensions']['subjectAltName']);
            $subjectAltNames = array_filter(array_map(function ($name) {
                if (0 === strpos($name, 'DNS:')) {
                    return strtolower(ltrim(substr($name, 4)));
                }

return null;
            }, $subjectAltNames));
            $subjectAltNames = array_values($subjectAltNames);
        }

return array(
            'cn' => $commonName,
            'san' => $subjectAltNames,
        );
    }

/**
     * Get the certificate pin.
     *
     * By Kevin McArthur of StormTide Digital Studios Inc.
     * @KevinSMcArthur / https://github.com/StormTide
     *
     * See https://tools.ietf.org/html/draft-ietf-websec-key-pinning-02
     *
     * This method was adapted from Sslurp.
     * https://github.com/EvanDotPro/Sslurp
     *
     * (c) Evan Coury <me@evancoury.com>
     *
     * For the full copyright and license information, please see below:
     *
     * Copyright (c) 2013, Evan Coury
     * All rights reserved.
     *
     * Redistribution and use in source and binary forms, with or without modification,
     * are permitted provided that the following conditions are met:
     *
     *     * Redistributions of source code must retain the above copyright notice,
     *       this list of conditions and the following disclaimer.
     *
     *     * Redistributions in binary form must reproduce the above copyright notice,
     *       this list of conditions and the following disclaimer in the documentation
     *       and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
     * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
     * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     *
     * @param string $certificate
     * @return string
     */
    public static function getCertificateFingerprint($certificate)
    {
        $pubkeydetails = openssl_pkey_get_details(openssl_get_publickey($certificate));
        $pubkeypem = $pubkeydetails['key'];
        //Convert PEM to DER before SHA1'ing
        $start = '-----BEGIN PUBLIC KEY-----';
        $end = '-----END PUBLIC KEY-----';
        $pemtrim = substr($pubkeypem, strpos($pubkeypem, $start) + strlen($start), (strlen($pubkeypem) - strpos($pubkeypem, $end)) * (-1));
        $der = base64_decode($pemtrim);

return sha1($der);
    }

/**
     * Test if it is safe to use the PHP function openssl_x509_parse().
     *
     * This checks if OpenSSL extensions is vulnerable to remote code execution
     * via the exploit documented as CVE-2013-6420.
     *
     * @return bool
     */
    public static function isOpensslParseSafe()
    {
        return CaBundle::isOpensslParseSafe();
    }

/**
     * Convert certificate name into matching function.
     *
     * @param string $certName CN/SAN
     *
     * @return callable|null
     */
    private static function certNameMatcher($certName)
    {
        $wildcards = substr_count($certName, '*');

if (0 === $wildcards) {
            // Literal match.
            return function ($hostname) use ($certName) {
                return $hostname === $certName;
            };
        }

if (1 === $wildcards) {
            $components = explode('.', $certName);

if (3 > count($components)) {
                // Must have 3+ components
                return null;
            }

$firstComponent = $components[0];

// Wildcard must be the last character.
            if ('*' !== $firstComponent[strlen($firstComponent) - 1]) {
                return null;
            }

$wildcardRegex = preg_quote($certName);
            $wildcardRegex = str_replace('\\*', '[a-z0-9-]+', $wildcardRegex);
            $wildcardRegex = "{^{$wildcardRegex}$}";

return function ($hostname) use ($wildcardRegex) {
                return Preg::isMatch($wildcardRegex, $hostname);
            };
        }

return null;
    }
}
<?php

namespace Composer\Util;

use Composer\Factory;
use Composer\IO\IOInterface;
use Composer\Config;
use Composer\Downloader\TransportException;

/**
 * @author Paul Wenke <wenke.paul@gmail.com>
 */
class Bitbucket
{
    /** @var IOInterface */
    private $io;
    /** @var Config */
    private $config;
    /** @var ProcessExecutor */
    private $process;
    /** @var HttpDownloader */
    private $httpDownloader;
    /** @var array{access_token: string, expires_in?: int}|null */
    private $token = null;
    /** @var int|null */
    private $time;

const OAUTH2_ACCESS_TOKEN_URL = 'https://bitbucket.org/site/oauth2/access_token';

/**
     * Constructor.
     *
     * @param IOInterface     $io             The IO instance
     * @param Config          $config         The composer configuration
     * @param ProcessExecutor $process        Process instance, injectable for mocking
     * @param HttpDownloader  $httpDownloader Remote Filesystem, injectable for mocking
     * @param int             $time           Timestamp, injectable for mocking
     */
    public function __construct(IOInterface $io, Config $config, ProcessExecutor $process = null, HttpDownloader $httpDownloader = null, $time = null)
    {
        $this->io = $io;
        $this->config = $config;
        $this->process = $process ?: new ProcessExecutor($io);
        $this->httpDownloader = $httpDownloader ?: Factory::createHttpDownloader($this->io, $config);
        $this->time = $time;
    }

/**
     * @return string
     */
    public function getToken()
    {
        if (!isset($this->token['access_token'])) {
            return '';
        }

return $this->token['access_token'];
    }

/**
     * Attempts to authorize a Bitbucket domain via OAuth
     *
     * @param  string $originUrl The host this Bitbucket instance is located at
     * @return bool   true on success
     */
    public function authorizeOAuth($originUrl)
    {
        if ($originUrl !== 'bitbucket.org') {
            return false;
        }

// if available use token from git config
        if (0 === $this->process->execute('git config bitbucket.accesstoken', $output)) {
            $this->io->setAuthentication($originUrl, 'x-token-auth', trim($output));

return true;
        }

return false;
    }

/**
     * @return bool
     */
    private function requestAccessToken()
    {
        try {
            $response = $this->httpDownloader->get(self::OAUTH2_ACCESS_TOKEN_URL, array(
                'retry-auth-failure' => false,
                'http' => array(
                    'method' => 'POST',
                    'content' => 'grant_type=client_credentials',
                ),
            ));

$token = $response->decodeJson();
            if (!isset($token['expires_in']) || !isset($token['access_token'])) {
                throw new \LogicException('Expected a token configured with expires_in and access_token present, got '.json_encode($token));
            }

$this->token = $token;
        } catch (TransportException $e) {
            if ($e->getCode() === 400) {
                $this->io->writeError('<error>Invalid OAuth consumer provided.</error>');
                $this->io->writeError('This can have two reasons:');
                $this->io->writeError('1. You are authenticating with a bitbucket username/password combination');
                $this->io->writeError('2. You are using an OAuth consumer, but didn\'t configure a (dummy) callback url');

return false;
            }
            if (in_array($e->getCode(), array(403, 401))) {
                $this->io->writeError('<error>Invalid OAuth consumer provided.</error>');
                $this->io->writeError('You can also add it manually later by using "composer config --global --auth bitbucket-oauth.bitbucket.org <consumer-key> <consumer-secret>"');

return false;
            }

throw $e;
        }

return true;
    }

/**
     * Authorizes a Bitbucket domain interactively via OAuth
     *
     * @param  string                        $originUrl The host this Bitbucket instance is located at
     * @param  string                        $message   The reason this authorization is required
     * @throws \RuntimeException
     * @throws TransportException|\Exception
     * @return bool                          true on success
     */
    public function authorizeOAuthInteractively($originUrl, $message = null)
    {
        if ($message) {
            $this->io->writeError($message);
        }

$url = 'https://support.atlassian.com/bitbucket-cloud/docs/use-oauth-on-bitbucket-cloud/';
        $this->io->writeError(sprintf('Follow the instructions on %s', $url));
        $this->io->writeError(sprintf('to create a consumer. It will be stored in "%s" for future use by Composer.', $this->config->getAuthConfigSource()->getName()));
        $this->io->writeError('Ensure you enter a "Callback URL" (http://example.com is fine) or it will not be possible to create an Access Token (this callback url will not be used by composer)');

$consumerKey = trim((string) $this->io->askAndHideAnswer('Consumer Key (hidden): '));

if (!$consumerKey) {
            $this->io->writeError('<warning>No consumer key given, aborting.</warning>');
            $this->io->writeError('You can also add it manually later by using "composer config --global --auth bitbucket-oauth.bitbucket.org <consumer-key> <consumer-secret>"');

return false;
        }

$consumerSecret = trim((string) $this->io->askAndHideAnswer('Consumer Secret (hidden): '));

if (!$consumerSecret) {
            $this->io->writeError('<warning>No consumer secret given, aborting.</warning>');
            $this->io->writeError('You can also add it manually later by using "composer config --global --auth bitbucket-oauth.bitbucket.org <consumer-key> <consumer-secret>"');

return false;
        }

$this->io->setAuthentication($originUrl, $consumerKey, $consumerSecret);

if (!$this->requestAccessToken()) {
            return false;
        }

// store value in user config
        $this->storeInAuthConfig($originUrl, $consumerKey, $consumerSecret);

// Remove conflicting basic auth credentials (if available)
        $this->config->getAuthConfigSource()->removeConfigSetting('http-basic.' . $originUrl);

$this->io->writeError('<info>Consumer stored successfully.</info>');

return true;
    }

/**
     * Retrieves an access token from Bitbucket.
     *
     * @param  string $originUrl
     * @param  string $consumerKey
     * @param  string $consumerSecret
     * @return string
     */
    public function requestToken($originUrl, $consumerKey, $consumerSecret)
    {
        if ($this->token !== null || $this->getTokenFromConfig($originUrl)) {
            return $this->token['access_token'];
        }

$this->io->setAuthentication($originUrl, $consumerKey, $consumerSecret);
        if (!$this->requestAccessToken()) {
            return '';
        }

$this->storeInAuthConfig($originUrl, $consumerKey, $consumerSecret);

if (!isset($this->token['access_token'])) {
            throw new \LogicException('Failed to initialize token above');
        }

return $this->token['access_token'];
    }

/**
     * Store the new/updated credentials to the configuration
     *
     * @param string $originUrl
     * @param string $consumerKey
     * @param string $consumerSecret
     *
     * @return void
     */
    private function storeInAuthConfig($originUrl, $consumerKey, $consumerSecret)
    {
        $this->config->getConfigSource()->removeConfigSetting('bitbucket-oauth.'.$originUrl);

if (null === $this->token || !isset($this->token['expires_in'])) {
            throw new \LogicException('Expected a token configured with expires_in present, got '.json_encode($this->token));
        }

$time = null === $this->time ? time() : $this->time;
        $consumer = array(
            "consumer-key" => $consumerKey,
            "consumer-secret" => $consumerSecret,
            "access-token" => $this->token['access_token'],
            "access-token-expiration" => $time + $this->token['expires_in'],
        );

$this->config->getAuthConfigSource()->addConfigSetting('bitbucket-oauth.'.$originUrl, $consumer);
    }

/**
     * @param  string $originUrl
     * @return bool
     */
    private function getTokenFromConfig($originUrl)
    {
        $authConfig = $this->config->get('bitbucket-oauth');

if (
            !isset($authConfig[$originUrl]['access-token'], $authConfig[$originUrl]['access-token-expiration'])
            || time() > $authConfig[$originUrl]['access-token-expiration']
        ) {
            return false;
        }

$this->token = array(
            'access_token' => $authConfig[$originUrl]['access-token'],
        );

return true;
    }
}
<?php

namespace Composer\Util;

use Composer\Config;
use Composer\IO\IOInterface;
use Composer\Downloader\TransportException;
use Composer\Pcre\Preg;
use Composer\Util\Http\Response;
use Composer\Util\Http\CurlDownloader;
use Composer\Composer;
use Composer\Package\Version\VersionParser;
use Composer\Semver\Constraint\Constraint;
use Composer\Exception\IrrecoverableDownloadException;
use React\Promise\Promise;
use React\Promise\PromiseInterface;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 * @phpstan-type Request array{url: string, options?: mixed[], copyTo?: ?string}
 * @phpstan-type Job array{id: int, status: int, request: Request, sync: bool, origin: string, resolve?: callable, reject?: callable, curl_id?: int, response?: Response, exception?: TransportException}
 */
class HttpDownloader
{
    const STATUS_QUEUED = 1;
    const STATUS_STARTED = 2;
    const STATUS_COMPLETED = 3;
    const STATUS_FAILED = 4;
    const STATUS_ABORTED = 5;

/** @var IOInterface */
    private $io;
    /** @var Config */
    private $config;
    /** @var array<Job> */
    private $jobs = array();
    /** @var mixed[] */
    private $options = array();
    /** @var int */
    private $runningJobs = 0;
    /** @var int */
    private $maxJobs = 12;
    /** @var ?CurlDownloader */
    private $curl;
    /** @var ?RemoteFilesystem */
    private $rfs;
    /** @var int */
    private $idGen = 0;
    /** @var bool */
    private $disabled;
    /** @var bool */
    private $allowAsync = false;

/**
     * @param IOInterface $io         The IO instance
     * @param Config      $config     The config
     * @param mixed[]     $options    The options
     * @param bool        $disableTls
     */
    public function __construct(IOInterface $io, Config $config, array $options = array(), $disableTls = false)
    {
        $this->io = $io;

$this->disabled = (bool) Platform::getEnv('COMPOSER_DISABLE_NETWORK');

// Setup TLS options
        // The cafile option can be set via config.json
        if ($disableTls === false) {
            $this->options = StreamContextFactory::getTlsDefaults($options, $io);
        }

// handle the other externally set options normally.
        $this->options = array_replace_recursive($this->options, $options);
        $this->config = $config;

if (self::isCurlEnabled()) {
            $this->curl = new CurlDownloader($io, $config, $options, $disableTls);
        }

$this->rfs = new RemoteFilesystem($io, $config, $options, $disableTls);

if (is_numeric($maxJobs = Platform::getEnv('COMPOSER_MAX_PARALLEL_HTTP'))) {
            $this->maxJobs = max(1, min(50, (int) $maxJobs));
        }
    }

/**
     * Download a file synchronously
     *
     * @param  string             $url     URL to download
     * @param  mixed[]            $options Stream context options e.g. https://www.php.net/manual/en/context.http.php
     *                                     although not all options are supported when using the default curl downloader
     * @throws TransportException
     * @return Response
     */
    public function get($url, $options = array())
    {
        list($job) = $this->addJob(array('url' => $url, 'options' => $options, 'copyTo' => null), true);
        $this->wait($job['id']);

$response = $this->getResponse($job['id']);

// check for failed curl response (empty body but successful looking response)
        if (
            $this->curl
            && PHP_VERSION_ID < 70000
            && $response->getBody() === null
            && $response->getStatusCode() === 200
            && $response->getHeader('content-length') !== '0'
        ) {
            $this->io->writeError('<warning>cURL downloader failed to return a response, disabling it and proceeding in slow mode.</warning>');

$this->curl = null;

list($job) = $this->addJob(array('url' => $url, 'options' => $options, 'copyTo' => null), true);
            $this->wait($job['id']);

$response = $this->getResponse($job['id']);
        }

return $response;
    }

/**
     * Create an async download operation
     *
     * @param  string             $url     URL to download
     * @param  mixed[]            $options Stream context options e.g. https://www.php.net/manual/en/context.http.php
     *                                     although not all options are supported when using the default curl downloader
     * @throws TransportException
     * @return PromiseInterface
     */
    public function add($url, $options = array())
    {
        list(, $promise) = $this->addJob(array('url' => $url, 'options' => $options, 'copyTo' => null));

return $promise;
    }

/**
     * Copy a file synchronously
     *
     * @param  string             $url     URL to download
     * @param  string             $to      Path to copy to
     * @param  mixed[]            $options Stream context options e.g. https://www.php.net/manual/en/context.http.php
     *                                     although not all options are supported when using the default curl downloader
     * @throws TransportException
     * @return Response
     */
    public function copy($url, $to, $options = array())
    {
        list($job) = $this->addJob(array('url' => $url, 'options' => $options, 'copyTo' => $to), true);
        $this->wait($job['id']);

return $this->getResponse($job['id']);
    }

/**
     * Create an async copy operation
     *
     * @param  string             $url     URL to download
     * @param  string             $to      Path to copy to
     * @param  mixed[]            $options Stream context options e.g. https://www.php.net/manual/en/context.http.php
     *                                     although not all options are supported when using the default curl downloader
     * @throws TransportException
     * @return PromiseInterface
     */
    public function addCopy($url, $to, $options = array())
    {
        list(, $promise) = $this->addJob(array('url' => $url, 'options' => $options, 'copyTo' => $to));

return $promise;
    }

/**
     * Retrieve the options set in the constructor
     *
     * @return mixed[] Options
     */
    public function getOptions()
    {
        return $this->options;
    }

/**
     * @param Request $request
     * @param bool    $sync
     *
     * @return array{Job, PromiseInterface}
     */
    private function addJob($request, $sync = false)
    {
        $request['options'] = array_replace_recursive($this->options, $request['options']);

/** @var Job */
        $job = array(
            'id' => $this->idGen++,
            'status' => self::STATUS_QUEUED,
            'request' => $request,
            'sync' => $sync,
            'origin' => Url::getOrigin($this->config, $request['url']),
        );

if (!$sync && !$this->allowAsync) {
            throw new \LogicException('You must use the HttpDownloader instance which is part of a Composer\Loop instance to be able to run async http requests');
        }

// capture username/password from URL if there is one
        if (Preg::isMatch('{^https?://([^:/]+):([^@/]+)@([^/]+)}i', $request['url'], $match)) {
            $this->io->setAuthentication($job['origin'], rawurldecode($match[1]), rawurldecode($match[2]));
        }

$rfs = $this->rfs;

if ($this->canUseCurl($job)) {
            $resolver = function ($resolve, $reject) use (&$job) {
                $job['status'] = HttpDownloader::STATUS_QUEUED;
                $job['resolve'] = $resolve;
                $job['reject'] = $reject;
            };
        } else {
            $resolver = function ($resolve, $reject) use (&$job, $rfs) {
                // start job
                $url = $job['request']['url'];
                $options = $job['request']['options'];

$job['status'] = HttpDownloader::STATUS_STARTED;

if ($job['request']['copyTo']) {
                    $rfs->copy($job['origin'], $url, $job['request']['copyTo'], false /* TODO progress */, $options);

$headers = $rfs->getLastHeaders();
                    $response = new Http\Response($job['request'], $rfs->findStatusCode($headers), $headers, $job['request']['copyTo'].'~');

$resolve($response);
                } else {
                    $body = $rfs->getContents($job['origin'], $url, false /* TODO progress */, $options);
                    $headers = $rfs->getLastHeaders();
                    $response = new Http\Response($job['request'], $rfs->findStatusCode($headers), $headers, $body);

$resolve($response);
                }
            };
        }

$downloader = $this;
        $curl = $this->curl;

$canceler = function () use (&$job, $curl) {
            if ($job['status'] === HttpDownloader::STATUS_QUEUED) {
                $job['status'] = HttpDownloader::STATUS_ABORTED;
            }
            if ($job['status'] !== HttpDownloader::STATUS_STARTED) {
                return;
            }
            $job['status'] = HttpDownloader::STATUS_ABORTED;
            if (isset($job['curl_id'])) {
                $curl->abortRequest($job['curl_id']);
            }
            throw new IrrecoverableDownloadException('Download of ' . Url::sanitize($job['request']['url']) . ' canceled');
        };

$promise = new Promise($resolver, $canceler);
        $promise = $promise->then(function ($response) use (&$job, $downloader) {
            $job['status'] = HttpDownloader::STATUS_COMPLETED;
            $job['response'] = $response;

// TODO 3.0 this should be done directly on $this when PHP 5.3 is dropped
            $downloader->markJobDone();

return $response;
        }, function ($e) use (&$job, $downloader) {
            $job['status'] = HttpDownloader::STATUS_FAILED;
            $job['exception'] = $e;

$downloader->markJobDone();

throw $e;
        });
        $this->jobs[$job['id']] = &$job;

if ($this->runningJobs < $this->maxJobs) {
            $this->startJob($job['id']);
        }

return array($job, $promise);
    }

// start job
        $job['status'] = self::STATUS_STARTED;
        $this->runningJobs++;

$resolve = $job['resolve'];
        $reject = $job['reject'];
        $url = $job['request']['url'];
        $options = $job['request']['options'];
        $origin = $job['origin'];

if ($this->disabled) {
            if (isset($job['request']['options']['http']['header']) && false !== stripos(implode('', $job['request']['options']['http']['header']), 'if-modified-since')) {
                $resolve(new Response(array('url' => $url), 304, array(), ''));
            } else {
                $e = new TransportException('Network disabled, request canceled: '.Url::sanitize($url), 499);
                $e->setStatusCode(499);
                $reject($e);
            }

return;
        }

try {
            if ($job['request']['copyTo']) {
                $job['curl_id'] = $this->curl->download($resolve, $reject, $origin, $url, $options, $job['request']['copyTo']);
            } else {
                $job['curl_id'] = $this->curl->download($resolve, $reject, $origin, $url, $options);
            }
        } catch (\Exception $exception) {
            $reject($exception);
        }
    }

/**
     * @private
     * @return void
     */
    public function markJobDone()
    {
        $this->runningJobs--;
    }

/**
     * Wait for current async download jobs to complete
     *
     * @param int|null $index For internal use only, the job id
     *
     * @return void
     */
    public function wait($index = null)
    {
        do {
            $jobCount = $this->countActiveJobs($index);
        } while ($jobCount);
    }

/**
     * @internal
     *
     * @return void
     */
    public function enableAsync()
    {
        $this->allowAsync = true;
    }

/**
     * @internal
     *
     * @param  int|null $index For internal use only, the job id
     * @return int      number of active (queued or started) jobs
     */
    public function countActiveJobs($index = null)
    {
        if ($this->runningJobs < $this->maxJobs) {
            foreach ($this->jobs as $job) {
                if ($job['status'] === self::STATUS_QUEUED && $this->runningJobs < $this->maxJobs) {
                    $this->startJob($job['id']);
                }
            }
        }

if ($this->curl) {
            $this->curl->tick();
        }

if (null !== $index) {
            return $this->jobs[$index]['status'] < self::STATUS_COMPLETED ? 1 : 0;
        }

$active = 0;
        foreach ($this->jobs as $job) {
            if ($job['status'] < self::STATUS_COMPLETED) {
                $active++;
            } elseif (!$job['sync']) {
                unset($this->jobs[$job['id']]);
            }
        }

return $active;
    }

/**
     * @param  int $index Job id
     * @return Response
     */
    private function getResponse($index)
    {
        if (!isset($this->jobs[$index])) {
            throw new \LogicException('Invalid request id');
        }

if ($this->jobs[$index]['status'] === self::STATUS_FAILED) {
            throw $this->jobs[$index]['exception'];
        }

if (!isset($this->jobs[$index]['response'])) {
            throw new \LogicException('Response not available yet, call wait() first');
        }

$resp = $this->jobs[$index]['response'];

unset($this->jobs[$index]);

return $resp;
    }

/**
     * @internal
     *
     * @param  string                                                                                    $url
     * @param  array{warning?: string, info?: string, warning-versions?: string, info-versions?: string, warnings?: array<array{versions: string, message: string}>, infos?: array<array{versions: string, message: string}>} $data
     * @return void
     */
    public static function outputWarnings(IOInterface $io, $url, $data)
    {
        // legacy warning/info keys
        foreach (array('warning', 'info') as $type) {
            if (empty($data[$type])) {
                continue;
            }

if (!empty($data[$type . '-versions'])) {
                $versionParser = new VersionParser();
                $constraint = $versionParser->parseConstraints($data[$type . '-versions']);
                $composer = new Constraint('==', $versionParser->normalize(Composer::getVersion()));
                if (!$constraint->matches($composer)) {
                    continue;
                }
            }

$io->writeError('<'.$type.'>'.ucfirst($type).' from '.Url::sanitize($url).': '.$data[$type].'</'.$type.'>');
        }

// modern Composer 2.2+ format with support for multiple warning/info messages
        foreach (array('warnings', 'infos') as $key) {
            if (empty($data[$key])) {
                continue;
            }

$versionParser = new VersionParser();
            foreach ($data[$key] as $spec) {
                $type = substr($key, 0, -1);
                $constraint = $versionParser->parseConstraints($spec['versions']);
                $composer = new Constraint('==', $versionParser->normalize(Composer::getVersion()));
                if (!$constraint->matches($composer)) {
                    continue;
                }

$io->writeError('<'.$type.'>'.ucfirst($type).' from '.Url::sanitize($url).': '.$spec['message'].'</'.$type.'>');
            }
        }
    }

/**
     * @internal
     *
     * @return ?string[]
     */
    public static function getExceptionHints(\Exception $e)
    {
        if (!$e instanceof TransportException) {
            return null;
        }

if (
            false !== strpos($e->getMessage(), 'Resolving timed out')
            || false !== strpos($e->getMessage(), 'Could not resolve host')
        ) {
            Silencer::suppress();
            $testConnectivity = file_get_contents('https://8.8.8.8', false, stream_context_create(array(
                'ssl' => array('verify_peer' => false),
                'http' => array('follow_location' => false, 'ignore_errors' => true),
            )));
            Silencer::restore();
            if (false !== $testConnectivity) {
                return array(
                    '<error>The following exception probably indicates you have misconfigured DNS resolver(s)</error>',
                );
            }

return array(
                '<error>The following exception probably indicates you are offline or have misconfigured DNS resolver(s)</error>',
            );
        }

return null;
    }

/**
     * @param  Job  $job
     * @return bool
     */
    private function canUseCurl(array $job)
    {
        if (!$this->curl) {
            return false;
        }

if (!Preg::isMatch('{^https?://}i', $job['request']['url'])) {
            return false;
        }

if (!empty($job['request']['options']['ssl']['allow_self_signed'])) {
            return false;
        }

return true;
    }

/**
     * @internal
     * @return bool
     */
    public static function isCurlEnabled()
    {
        return \extension_loaded('curl') && \function_exists('curl_multi_exec') && \function_exists('curl_multi_init');
    }
}
<?php

namespace Composer\Util;

@trigger_error('Composer\Util\MetadataMinifier is deprecated, use Composer\MetadataMinifier\MetadataMinifier from composer/metadata-minifier instead.', E_USER_DEPRECATED);

/**
 * @deprecated Use Composer\MetadataMinifier\MetadataMinifier instead
 */
class MetadataMinifier extends \Composer\MetadataMinifier\MetadataMinifier
{
}
<?php

namespace Composer\Util\Http;

use Composer\Json\JsonFile;
use Composer\Pcre\Preg;
use Composer\Util\HttpDownloader;

/**
 * @phpstan-import-type Request from HttpDownloader
 */
class Response
{
    /** @var Request */
    private $request;
    /** @var int */
    private $code;
    /** @var string[] */
    private $headers;
    /** @var ?string */
    private $body;

/**
     * @param Request  $request
     * @param int      $code
     * @param string[] $headers
     * @param ?string  $body
     */
    public function __construct(array $request, $code, array $headers, $body)
    {
        if (!isset($request['url'])) { // @phpstan-ignore-line
            throw new \LogicException('url key missing from request array');
        }
        $this->request = $request;
        $this->code = (int) $code;
        $this->headers = $headers;
        $this->body = $body;
    }

/**
     * @return int
     */
    public function getStatusCode()
    {
        return $this->code;
    }

/**
     * @return string|null
     */
    public function getStatusMessage()
    {
        $value = null;
        foreach ($this->headers as $header) {
            if (Preg::isMatch('{^HTTP/\S+ \d+}i', $header)) {
                // In case of redirects, headers contain the headers of all responses
                // so we can not return directly and need to keep iterating
                $value = $header;
            }
        }

return $value;
    }

/**
     * @return string[]
     */
    public function getHeaders()
    {
        return $this->headers;
    }

/**
     * @param  string  $name
     * @return ?string
     */
    public function getHeader($name)
    {
        return self::findHeaderValue($this->headers, $name);
    }

/**
     * @return ?string
     */
    public function getBody()
    {
        return $this->body;
    }

/**
     * @return mixed
     */
    public function decodeJson()
    {
        return JsonFile::parseJson($this->body, $this->request['url']);
    }

/**
     * @return void
     * @phpstan-impure
     */
    public function collect()
    {
        /** @phpstan-ignore-next-line */
        $this->request = $this->code = $this->headers = $this->body = null;
    }

/**
     * @param  string[]    $headers array of returned headers like from getLastHeaders()
     * @param  string      $name    header name (case insensitive)
     * @return string|null
     */
    public static function findHeaderValue(array $headers, $name)
    {
        $value = null;
        foreach ($headers as $header) {
            if (Preg::isMatch('{^'.preg_quote($name).':\s*(.+?)\s*$}i', $header, $match)) {
                $value = $match[1];
            }
        }

return $value;
    }
}
<?php

namespace Composer\Util\Http;

/**
 * Proxy discovery and helper class
 *
 * @internal
 * @author John Stevenson <john-stevenson@blueyonder.co.uk>
 */
class ProxyHelper
{
    /**
     * Returns proxy environment values
     *
     * @return array{string|null, string|null, string|null} httpProxy, httpsProxy, noProxy values
     *
     * @throws \RuntimeException on malformed url
     */
    public static function getProxyData()
    {
        $httpProxy = null;
        $httpsProxy = null;

// Handle http_proxy/HTTP_PROXY on CLI only for security reasons
        if (PHP_SAPI === 'cli' || PHP_SAPI === 'phpdbg') {
            if ($env = self::getProxyEnv(array('http_proxy', 'HTTP_PROXY'), $name)) {
                $httpProxy = self::checkProxy($env, $name);
            }
        }

// Prefer CGI_HTTP_PROXY if available
        if ($env = self::getProxyEnv(array('CGI_HTTP_PROXY'), $name)) {
            $httpProxy = self::checkProxy($env, $name);
        }

// Handle https_proxy/HTTPS_PROXY
        if ($env = self::getProxyEnv(array('https_proxy', 'HTTPS_PROXY'), $name)) {
            $httpsProxy = self::checkProxy($env, $name);
        } else {
            $httpsProxy = $httpProxy;
        }

// Handle no_proxy
        $noProxy = self::getProxyEnv(array('no_proxy', 'NO_PROXY'), $name);

return array($httpProxy, $httpsProxy, $noProxy);
    }

/**
     * Returns http context options for the proxy url
     *
     * @param string $proxyUrl
     *
     * @return array{http: array{proxy: string, header?: string}}
     */
    public static function getContextOptions($proxyUrl)
    {
        $proxy = parse_url($proxyUrl);

// Remove any authorization
        $proxyUrl = self::formatParsedUrl($proxy, false);
        $proxyUrl = str_replace(array('http://', 'https://'), array('tcp://', 'ssl://'), $proxyUrl);

$options['http']['proxy'] = $proxyUrl;

// Handle any authorization
        if (isset($proxy['user'])) {
            $auth = rawurldecode($proxy['user']);

if (isset($proxy['pass'])) {
                $auth .= ':' . rawurldecode($proxy['pass']);
            }
            $auth = base64_encode($auth);
            // Set header as a string
            $options['http']['header'] = "Proxy-Authorization: Basic {$auth}";
        }

return $options;
    }

/**
     * Sets/unsets request_fulluri value in http context options array
     *
     * @param string  $requestUrl
     * @param mixed[] $options Set by method
     *
     * @return void
     */
    public static function setRequestFullUri($requestUrl, array &$options)
    {
        if ('http' === parse_url($requestUrl, PHP_URL_SCHEME)) {
            $options['http']['request_fulluri'] = true;
        } else {
            unset($options['http']['request_fulluri']);
        }
    }

/**
     * Searches $_SERVER for case-sensitive values
     *
     * @param string[]    $names Names to search for
     * @param string|null $name  Name of any found value
     *
     * @return string|null The found value
     */
    private static function getProxyEnv(array $names, &$name)
    {
        foreach ($names as $name) {
            if (!empty($_SERVER[$name])) {
                return $_SERVER[$name];
            }
        }

return null;
    }

/**
     * Checks and formats a proxy url from the environment
     *
     * @param  string            $proxyUrl
     * @param  string            $envName
     * @throws \RuntimeException on malformed url
     * @return string            The formatted proxy url
     */
    private static function checkProxy($proxyUrl, $envName)
    {
        $error = sprintf('malformed %s url', $envName);
        $proxy = parse_url($proxyUrl);

// We need parse_url to have identified a host
        if (!isset($proxy['host'])) {
            throw new \RuntimeException($error);
        }

$proxyUrl = self::formatParsedUrl($proxy, true);

// We need a port because streams and curl use different defaults
        if (!parse_url($proxyUrl, PHP_URL_PORT)) {
            throw new \RuntimeException($error);
        }

return $proxyUrl;
    }

/**
     * Formats a url from its component parts
     *
     * @param  array{scheme?: string, host: string, port?: int, user?: string, pass?: string} $proxy
     * @param  bool                                                                           $includeAuth
     *
     * @return string The formatted value
     */
    private static function formatParsedUrl(array $proxy, $includeAuth)
    {
        $proxyUrl = isset($proxy['scheme']) ? strtolower($proxy['scheme']) . '://' : '';

if ($includeAuth && isset($proxy['user'])) {
            $proxyUrl .= $proxy['user'];

if (isset($proxy['pass'])) {
                $proxyUrl .= ':' . $proxy['pass'];
            }
            $proxyUrl .= '@';
        }

$proxyUrl .= $proxy['host'];

if (isset($proxy['port'])) {
            $proxyUrl .= ':' . $proxy['port'];
        } elseif (strpos($proxyUrl, 'http://') === 0) {
            $proxyUrl .= ':80';
        } elseif (strpos($proxyUrl, 'https://') === 0) {
            $proxyUrl .= ':443';
        }

return $proxyUrl;
    }
}
<?php

namespace Composer\Util\Http;

use Composer\Downloader\TransportException;
use Composer\Util\NoProxyPattern;
use Composer\Util\Url;

/**
 * @internal
 * @author John Stevenson <john-stevenson@blueyonder.co.uk>
 */
class ProxyManager
{
    /** @var ?string */
    private $error = null;
    /** @var array{http: ?string, https: ?string} */
    private $fullProxy;
    /** @var array{http: ?string, https: ?string} */
    private $safeProxy;
    /** @var array{http: array{options: mixed[]|null}, https: array{options: mixed[]|null}} */
    private $streams;
    /** @var bool */
    private $hasProxy;
    /** @var ?string */
    private $info = null;
    /** @var ?NoProxyPattern */
    private $noProxyHandler = null;

/** @var ?ProxyManager */
    private static $instance = null;

private function __construct()
    {
        $this->fullProxy = $this->safeProxy = array(
            'http' => null,
            'https' => null,
        );

$this->streams['http'] = $this->streams['https'] = array(
            'options' => null,
        );

$this->hasProxy = false;
        $this->initProxyData();
    }

/**
     * @return ProxyManager
     */
    public static function getInstance()
    {
        if (!self::$instance) {
            self::$instance = new self();
        }

return self::$instance;
    }

/**
     * Clears the persistent instance
     *
     * @return void
     */
    public static function reset()
    {
        self::$instance = null;
    }

/**
     * Returns a RequestProxy instance for the request url
     *
     * @param  string       $requestUrl
     * @return RequestProxy
     */
    public function getProxyForRequest($requestUrl)
    {
        if ($this->error) {
            throw new TransportException('Unable to use a proxy: '.$this->error);
        }

$scheme = parse_url($requestUrl, PHP_URL_SCHEME) ?: 'http';
        $proxyUrl = '';
        $options = array();
        $formattedProxyUrl = '';

if ($this->hasProxy && in_array($scheme, array('http', 'https'), true) && $this->fullProxy[$scheme]) {
            if ($this->noProxy($requestUrl)) {
                $formattedProxyUrl = 'excluded by no_proxy';
            } else {
                $proxyUrl = $this->fullProxy[$scheme];
                $options = $this->streams[$scheme]['options'];
                ProxyHelper::setRequestFullUri($requestUrl, $options);
                $formattedProxyUrl = $this->safeProxy[$scheme];
            }
        }

return new RequestProxy($proxyUrl, $options, $formattedProxyUrl);
    }

/**
     * Returns true if a proxy is being used
     *
     * @return bool If false any error will be in $message
     */
    public function isProxying()
    {
        return $this->hasProxy;
    }

/**
     * Returns proxy configuration info which can be shown to the user
     *
     * @return string|null Safe proxy URL or an error message if setting up proxy failed or null if no proxy was configured
     */
    public function getFormattedProxy()
    {
        return $this->hasProxy ? $this->info : $this->error;
    }

/**
     * Initializes proxy values from the environment
     *
     * @return void
     */
    private function initProxyData()
    {
        try {
            list($httpProxy, $httpsProxy, $noProxy) = ProxyHelper::getProxyData();
        } catch (\RuntimeException $e) {
            $this->error = $e->getMessage();

return;
        }

$info = array();

if ($httpProxy) {
            $info[] = $this->setData($httpProxy, 'http');
        }
        if ($httpsProxy) {
            $info[] = $this->setData($httpsProxy, 'https');
        }
        if ($this->hasProxy) {
            $this->info = implode(', ', $info);
            if ($noProxy) {
                $this->noProxyHandler = new NoProxyPattern($noProxy);
            }
        }
    }

/**
     * Sets initial data
     *
     * @param non-empty-string $url    Proxy url
     * @param 'http'|'https'   $scheme Environment variable scheme
     *
     * @return non-empty-string
     */
    private function setData($url, $scheme)
    {
        $safeProxy = Url::sanitize($url);
        $this->fullProxy[$scheme] = $url;
        $this->safeProxy[$scheme] = $safeProxy;
        $this->streams[$scheme]['options'] = ProxyHelper::getContextOptions($url);
        $this->hasProxy = true;

return sprintf('%s=%s', $scheme, $safeProxy);
    }

/**
     * Returns true if a url matches no_proxy value
     *
     * @param  string $requestUrl
     * @return bool
     */
    private function noProxy($requestUrl)
    {
        return $this->noProxyHandler && $this->noProxyHandler->test($requestUrl);
    }
}
<?php

namespace Composer\Util\Http;

use Composer\Util\Url;

/**
 * @internal
 * @author John Stevenson <john-stevenson@blueyonder.co.uk>
 */
class RequestProxy
{
    /** @var mixed[] */
    private $contextOptions;
    /** @var bool */
    private $isSecure;
    /** @var string */
    private $formattedUrl;
    /** @var string */
    private $url;

/**
     * @param string  $url
     * @param mixed[] $contextOptions
     * @param string  $formattedUrl
     */
    public function __construct($url, array $contextOptions, $formattedUrl)
    {
        $this->url = $url;
        $this->contextOptions = $contextOptions;
        $this->formattedUrl = $formattedUrl;
        $this->isSecure = 0 === strpos($url, 'https://');
    }

/**
     * Returns an array of context options
     *
     * @return mixed[]
     */
    public function getContextOptions()
    {
        return $this->contextOptions;
    }

/**
     * Returns the safe proxy url from the last request
     *
     * @param  string|null $format Output format specifier
     * @return string      Safe proxy, no proxy or empty
     */
    public function getFormattedUrl($format = '')
    {
        $result = '';
        if ($this->formattedUrl) {
            $format = $format ?: '%s';
            $result = sprintf($format, $this->formattedUrl);
        }

return $result;
    }

/**
     * Returns the proxy url
     *
     * @return string Proxy url or empty
     */
    public function getUrl()
    {
        return $this->url;
    }

/**
     * Returns true if this is a secure-proxy
     *
     * @return bool False if not secure or there is no proxy
     */
    public function isSecure()
    {
        return $this->isSecure;
    }
}
<?php

namespace Composer\Util\Http;

use Composer\Config;
use Composer\Downloader\MaxFileSizeExceededException;
use Composer\IO\IOInterface;
use Composer\Downloader\TransportException;
use Composer\Pcre\Preg;
use Composer\Util\StreamContextFactory;
use Composer\Util\AuthHelper;
use Composer\Util\Url;
use Composer\Util\HttpDownloader;
use React\Promise\Promise;

/**
 * @internal
 * @author Jordi Boggiano <j.boggiano@seld.be>
 * @author Nicolas Grekas <p@tchwork.com>
 * @phpstan-type Attributes array{retryAuthFailure: bool, redirects: int, retries: int, storeAuth: bool}
 * @phpstan-type Job array{url: string, origin: string, attributes: Attributes, options: mixed[], progress: mixed[], curlHandle: resource, filename: string|false, headerHandle: resource, bodyHandle: resource, resolve: callable, reject: callable}
 */
class CurlDownloader
{
    /** @var ?resource */
    private $multiHandle;
    /** @var ?resource */
    private $shareHandle;
    /** @var Job[] */
    private $jobs = array();
    /** @var IOInterface */
    private $io;
    /** @var Config */
    private $config;
    /** @var AuthHelper */
    private $authHelper;
    /** @var float */
    private $selectTimeout = 5.0;
    /** @var int */
    private $maxRedirects = 20;
    /** @var int */
    private $maxRetries = 3;
    /** @var ProxyManager */
    private $proxyManager;
    /** @var bool */
    private $supportsSecureProxy;
    /** @var array<int, string[]> */
    protected $multiErrors = array(
        CURLM_BAD_HANDLE => array('CURLM_BAD_HANDLE', 'The passed-in handle is not a valid CURLM handle.'),
        CURLM_BAD_EASY_HANDLE => array('CURLM_BAD_EASY_HANDLE', "An easy handle was not good/valid. It could mean that it isn't an easy handle at all, or possibly that the handle already is in used by this or another multi handle."),
        CURLM_OUT_OF_MEMORY => array('CURLM_OUT_OF_MEMORY', 'You are doomed.'),
        CURLM_INTERNAL_ERROR => array('CURLM_INTERNAL_ERROR', 'This can only be returned if libcurl bugs. Please report it to us!'),
    );

/** @var mixed[] */
    private static $options = array(
        'http' => array(
            'method' => CURLOPT_CUSTOMREQUEST,
            'content' => CURLOPT_POSTFIELDS,
            'header' => CURLOPT_HTTPHEADER,
            'timeout' => CURLOPT_TIMEOUT,
        ),
        'ssl' => array(
            'cafile' => CURLOPT_CAINFO,
            'capath' => CURLOPT_CAPATH,
            'verify_peer' => CURLOPT_SSL_VERIFYPEER,
            'verify_peer_name' => CURLOPT_SSL_VERIFYHOST,
            'local_cert' => CURLOPT_SSLCERT,
            'local_pk' => CURLOPT_SSLKEY,
            'passphrase' => CURLOPT_SSLKEYPASSWD,
        ),
    );

/** @var array<string, true> */
    private static $timeInfo = array(
        'total_time' => true,
        'namelookup_time' => true,
        'connect_time' => true,
        'pretransfer_time' => true,
        'starttransfer_time' => true,
        'redirect_time' => true,
    );

/**
     * @param mixed[] $options
     * @param bool    $disableTls
     */
    public function __construct(IOInterface $io, Config $config, array $options = array(), $disableTls = false)
    {
        $this->io = $io;
        $this->config = $config;

$this->multiHandle = $mh = curl_multi_init();
        if (function_exists('curl_multi_setopt')) {
            curl_multi_setopt($mh, CURLMOPT_PIPELINING, PHP_VERSION_ID >= 70400 ? /* CURLPIPE_MULTIPLEX */ 2 : /*CURLPIPE_HTTP1 | CURLPIPE_MULTIPLEX*/ 3);
            if (defined('CURLMOPT_MAX_HOST_CONNECTIONS') && !defined('HHVM_VERSION')) {
                curl_multi_setopt($mh, CURLMOPT_MAX_HOST_CONNECTIONS, 8);
            }
        }

if (function_exists('curl_share_init')) {
            $this->shareHandle = $sh = curl_share_init();
            curl_share_setopt($sh, CURLSHOPT_SHARE, CURL_LOCK_DATA_COOKIE);
            curl_share_setopt($sh, CURLSHOPT_SHARE, CURL_LOCK_DATA_DNS);
            curl_share_setopt($sh, CURLSHOPT_SHARE, CURL_LOCK_DATA_SSL_SESSION);
        }

$this->authHelper = new AuthHelper($io, $config);
        $this->proxyManager = ProxyManager::getInstance();

$version = curl_version();
        $features = $version['features'];
        $this->supportsSecureProxy = defined('CURL_VERSION_HTTPS_PROXY') && ($features & CURL_VERSION_HTTPS_PROXY);
    }

/**
     * @param callable $resolve
     * @param callable $reject
     * @param string   $origin
     * @param string   $url
     * @param mixed[]  $options
     * @param ?string  $copyTo
     *
     * @return int internal job id
     */
    public function download($resolve, $reject, $origin, $url, $options, $copyTo = null)
    {
        $attributes = array();
        if (isset($options['retry-auth-failure'])) {
            $attributes['retryAuthFailure'] = $options['retry-auth-failure'];
            unset($options['retry-auth-failure']);
        }

return $this->initDownload($resolve, $reject, $origin, $url, $options, $copyTo, $attributes);
    }

/**
     * @param callable $resolve
     * @param callable $reject
     * @param string   $origin
     * @param string   $url
     * @param mixed[]  $options
     * @param ?string  $copyTo
     *
     * @param array{retryAuthFailure?: bool, redirects?: int, retries?: int, storeAuth?: bool} $attributes
     *
     * @return int internal job id
     */
    private function initDownload($resolve, $reject, $origin, $url, $options, $copyTo = null, array $attributes = array())
    {
        $attributes = array_merge(array(
            'retryAuthFailure' => true,
            'redirects' => 0,
            'retries' => 0,
            'storeAuth' => false,
        ), $attributes);

$originalOptions = $options;

// check URL can be accessed (i.e. is not insecure), but allow insecure Packagist calls to $hashed providers as file integrity is verified with sha256
        if (!Preg::isMatch('{^http://(repo\.)?packagist\.org/p/}', $url) || (false === strpos($url, '$') && false === strpos($url, '%24'))) {
            $this->config->prohibitUrlByConfig($url, $this->io);
        }

$curlHandle = curl_init();
        $headerHandle = fopen('php://temp/maxmemory:32768', 'w+b');
        if (false === $headerHandle) {
            throw new \RuntimeException('Failed to open a temp stream to store curl headers');
        }

if ($copyTo) {
            $errorMessage = '';
            // @phpstan-ignore-next-line
            set_error_handler(function ($code, $msg) use (&$errorMessage) {
                if ($errorMessage) {
                    $errorMessage .= "\n";
                }
                $errorMessage .= Preg::replace('{^fopen$.*?$: }', '', $msg);
            });
            $bodyHandle = fopen($copyTo.'~', 'w+b');
            restore_error_handler();
            if (!$bodyHandle) {
                throw new TransportException('The "'.$url.'" file could not be written to '.$copyTo.': '.$errorMessage);
            }
        } else {
            $bodyHandle = @fopen('php://temp/maxmemory:524288', 'w+b');
        }

curl_setopt($curlHandle, CURLOPT_URL, $url);
        curl_setopt($curlHandle, CURLOPT_FOLLOWLOCATION, false);
        curl_setopt($curlHandle, CURLOPT_CONNECTTIMEOUT, 10);
        curl_setopt($curlHandle, CURLOPT_TIMEOUT, max((int) ini_get("default_socket_timeout"), 300));
        curl_setopt($curlHandle, CURLOPT_WRITEHEADER, $headerHandle);
        curl_setopt($curlHandle, CURLOPT_FILE, $bodyHandle);
        curl_setopt($curlHandle, CURLOPT_ENCODING, ""); // let cURL set the Accept-Encoding header to what it supports
        curl_setopt($curlHandle, CURLOPT_PROTOCOLS, CURLPROTO_HTTP | CURLPROTO_HTTPS);

if (function_exists('curl_share_init')) {
            curl_setopt($curlHandle, CURLOPT_SHARE, $this->shareHandle);
        }

if (!isset($options['http']['header'])) {
            $options['http']['header'] = array();
        }

$options['http']['header'] = array_diff($options['http']['header'], array('Connection: close'));
        $options['http']['header'][] = 'Connection: keep-alive';

$version = curl_version();
        $features = $version['features'];
        if (0 === strpos($url, 'https://') && \defined('CURL_VERSION_HTTP2') && \defined('CURL_HTTP_VERSION_2_0') && (CURL_VERSION_HTTP2 & $features)) {
            curl_setopt($curlHandle, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_2_0);
        }

$options['http']['header'] = $this->authHelper->addAuthenticationHeader($options['http']['header'], $origin, $url);
        $options = StreamContextFactory::initOptions($url, $options, true);

foreach (self::$options as $type => $curlOptions) {
            foreach ($curlOptions as $name => $curlOption) {
                if (isset($options[$type][$name])) {
                    if ($type === 'ssl' && $name === 'verify_peer_name') {
                        curl_setopt($curlHandle, $curlOption, $options[$type][$name] === true ? 2 : $options[$type][$name]);
                    } else {
                        curl_setopt($curlHandle, $curlOption, $options[$type][$name]);
                    }
                }
            }
        }

// Always set CURLOPT_PROXY to enable/disable proxy handling
        // Any proxy authorization is included in the proxy url
        $proxy = $this->proxyManager->getProxyForRequest($url);
        curl_setopt($curlHandle, CURLOPT_PROXY, $proxy->getUrl());

// Curl needs certificate locations for secure proxies.
        // CURLOPT_PROXY_SSL_VERIFY_PEER/HOST are enabled by default
        if ($proxy->isSecure()) {
            if (!$this->supportsSecureProxy) {
                throw new TransportException('Connecting to a secure proxy using curl is not supported on PHP versions below 7.3.0.');
            }
            if (!empty($options['ssl']['cafile'])) {
                curl_setopt($curlHandle, CURLOPT_PROXY_CAINFO, $options['ssl']['cafile']);
            }
            if (!empty($options['ssl']['capath'])) {
                curl_setopt($curlHandle, CURLOPT_PROXY_CAPATH, $options['ssl']['capath']);
            }
        }

$progress = array_diff_key(curl_getinfo($curlHandle), self::$timeInfo);

$this->jobs[(int) $curlHandle] = array(
            'url' => $url,
            'origin' => $origin,
            'attributes' => $attributes,
            'options' => $originalOptions,
            'progress' => $progress,
            'curlHandle' => $curlHandle,
            'filename' => $copyTo,
            'headerHandle' => $headerHandle,
            'bodyHandle' => $bodyHandle,
            'resolve' => $resolve,
            'reject' => $reject,
        );

$usingProxy = $proxy->getFormattedUrl(' using proxy (%s)');
        $ifModified = false !== stripos(implode(',', $options['http']['header']), 'if-modified-since:') ? ' if modified' : '';
        if ($attributes['redirects'] === 0 && $attributes['retries'] === 0) {
            $this->io->writeError('Downloading ' . Url::sanitize($url) . $usingProxy . $ifModified, true, IOInterface::DEBUG);
        }

$this->checkCurlResult(curl_multi_add_handle($this->multiHandle, $curlHandle));
        // TODO progress

return (int) $curlHandle;
    }

/**
     * @param  int  $id
     * @return void
     */
    public function abortRequest($id)
    {
        if (isset($this->jobs[$id], $this->jobs[$id]['curlHandle'])) {
            $job = $this->jobs[$id];
            curl_multi_remove_handle($this->multiHandle, $job['curlHandle']);
            curl_close($job['curlHandle']);
            if (is_resource($job['headerHandle'])) {
                fclose($job['headerHandle']);
            }
            if (is_resource($job['bodyHandle'])) {
                fclose($job['bodyHandle']);
            }
            if ($job['filename']) {
                @unlink($job['filename'].'~');
            }
            unset($this->jobs[$id]);
        }
    }

/**
     * @return void
     */
    public function tick()
    {
        static $timeoutWarning = false;

if (!$this->jobs) {
            return;
        }

$active = true;
        $this->checkCurlResult(curl_multi_exec($this->multiHandle, $active));
        if (-1 === curl_multi_select($this->multiHandle, $this->selectTimeout)) {
            // sleep in case select returns -1 as it can happen on old php versions or some platforms where curl does not manage to do the select
            usleep(150);
        }

while ($progress = curl_multi_info_read($this->multiHandle)) {
            $curlHandle = $progress['handle'];
            $result = $progress['result'];
            $i = (int) $curlHandle;
            if (!isset($this->jobs[$i])) {
                continue;
            }

$progress = curl_getinfo($curlHandle);
            $job = $this->jobs[$i];
            unset($this->jobs[$i]);
            $error = curl_error($curlHandle);
            $errno = curl_errno($curlHandle);
            curl_multi_remove_handle($this->multiHandle, $curlHandle);
            curl_close($curlHandle);

$headers = null;
            $statusCode = null;
            $response = null;
            try {
                // TODO progress
                if (CURLE_OK !== $errno || $error || $result !== CURLE_OK) {
                    $errno = $errno ?: $result;
                    if (!$error && function_exists('curl_strerror')) {
                        $error = curl_strerror($errno);
                    }
                    $progress['error_code'] = $errno;

if (
                        (!isset($job['options']['http']['method']) || $job['options']['http']['method'] === 'GET')
                        && (
                            in_array($errno, array(7 /* CURLE_COULDNT_CONNECT */, 16 /* CURLE_HTTP2 */, 92 /* CURLE_HTTP2_STREAM */), true)
                            || ($errno === 35 /* CURLE_SSL_CONNECT_ERROR */ && false !== strpos($error, 'Connection reset by peer'))
                        ) && $job['attributes']['retries'] < $this->maxRetries
                    ) {
                        $this->io->writeError('Retrying ('.($job['attributes']['retries'] + 1).') ' . Url::sanitize($job['url']) . ' due to curl error '. $errno, true, IOInterface::DEBUG);
                        $this->restartJob($job, $job['url'], array('retries' => $job['attributes']['retries'] + 1));
                        continue;
                    }

if ($errno === 28 /* CURLE_OPERATION_TIMEDOUT */ && isset($progress['namelookup_time']) && $progress['namelookup_time'] == 0 && !$timeoutWarning) {
                        $timeoutWarning = true;
                        $this->io->writeError('<warning>A connection timeout was encountered. If you intend to run Composer without connecting to the internet, run the command again prefixed with COMPOSER_DISABLE_NETWORK=1 to make Composer run in offline mode.</warning>');
                    }

throw new TransportException('curl error '.$errno.' while downloading '.Url::sanitize($progress['url']).': '.$error);
                }
                $statusCode = $progress['http_code'];
                rewind($job['headerHandle']);
                $headers = explode("\r\n", rtrim(stream_get_contents($job['headerHandle'])));
                fclose($job['headerHandle']);

if ($statusCode === 0) {
                    throw new \LogicException('Received unexpected http status code 0 without error for '.Url::sanitize($progress['url']).': headers '.var_export($headers, true).' curl info '.var_export($progress, true));
                }

// prepare response object
                if ($job['filename']) {
                    $contents = $job['filename'].'~';
                    if ($statusCode >= 300) {
                        rewind($job['bodyHandle']);
                        $contents = stream_get_contents($job['bodyHandle']);
                    }
                    $response = new CurlResponse(array('url' => $progress['url']), $statusCode, $headers, $contents, $progress);
                    $this->io->writeError('['.$statusCode.'] '.Url::sanitize($progress['url']), true, IOInterface::DEBUG);
                } else {
                    rewind($job['bodyHandle']);
                    $contents = stream_get_contents($job['bodyHandle']);
                    $response = new CurlResponse(array('url' => $progress['url']), $statusCode, $headers, $contents, $progress);
                    $this->io->writeError('['.$statusCode.'] '.Url::sanitize($progress['url']), true, IOInterface::DEBUG);
                }
                fclose($job['bodyHandle']);

if ($response->getStatusCode() >= 400 && $response->getHeader('content-type') === 'application/json') {
                    HttpDownloader::outputWarnings($this->io, $job['origin'], json_decode($response->getBody(), true));
                }

$result = $this->isAuthenticatedRetryNeeded($job, $response);
                if ($result['retry']) {
                    $this->restartJob($job, $job['url'], array('storeAuth' => $result['storeAuth']));
                    continue;
                }

// handle 3xx redirects, 304 Not Modified is excluded
                if ($statusCode >= 300 && $statusCode <= 399 && $statusCode !== 304 && $job['attributes']['redirects'] < $this->maxRedirects) {
                    $location = $this->handleRedirect($job, $response);
                    if ($location) {
                        $this->restartJob($job, $location, array('redirects' => $job['attributes']['redirects'] + 1));
                        continue;
                    }
                }

// fail 4xx and 5xx responses and capture the response
                if ($statusCode >= 400 && $statusCode <= 599) {
                    if (
                        (!isset($job['options']['http']['method']) || $job['options']['http']['method'] === 'GET')
                        && in_array($statusCode, array(423, 425, 500, 502, 503, 504, 507, 510), true)
                        && $job['attributes']['retries'] < $this->maxRetries
                    ) {
                        $this->io->writeError('Retrying ('.($job['attributes']['retries'] + 1).') ' . Url::sanitize($job['url']) . ' due to status code '. $statusCode, true, IOInterface::DEBUG);
                        $this->restartJob($job, $job['url'], array('retries' => $job['attributes']['retries'] + 1));
                        continue;
                    }

throw $this->failResponse($job, $response, $response->getStatusMessage());
                }

if ($job['attributes']['storeAuth']) {
                    $this->authHelper->storeAuth($job['origin'], $job['attributes']['storeAuth']);
                }

// resolve promise
                if ($job['filename']) {
                    rename($job['filename'].'~', $job['filename']);
                    call_user_func($job['resolve'], $response);
                } else {
                    call_user_func($job['resolve'], $response);
                }
            } catch (\Exception $e) {
                if ($e instanceof TransportException && $headers) {
                    $e->setHeaders($headers);
                    $e->setStatusCode($statusCode);
                }
                if ($e instanceof TransportException && $response) {
                    $e->setResponse($response->getBody());
                }
                if ($e instanceof TransportException && $progress) {
                    $e->setResponseInfo($progress);
                }

$this->rejectJob($job, $e);
            }
        }

foreach ($this->jobs as $i => $curlHandle) {
            if (!isset($this->jobs[$i])) {
                continue;
            }
            $curlHandle = $this->jobs[$i]['curlHandle'];
            $progress = array_diff_key(curl_getinfo($curlHandle), self::$timeInfo);

if ($this->jobs[$i]['progress'] !== $progress) {
                $this->jobs[$i]['progress'] = $progress;

if (isset($this->jobs[$i]['options']['max_file_size'])) {
                    // Compare max_file_size with the content-length header this value will be -1 until the header is parsed
                    if ($this->jobs[$i]['options']['max_file_size'] < $progress['download_content_length']) {
                        $this->rejectJob($this->jobs[$i], new MaxFileSizeExceededException('Maximum allowed download size reached. Content-length header indicates ' . $progress['download_content_length'] . ' bytes. Allowed ' .  $this->jobs[$i]['options']['max_file_size'] . ' bytes'));
                    }

// Compare max_file_size with the download size in bytes
                    if ($this->jobs[$i]['options']['max_file_size'] < $progress['size_download']) {
                        $this->rejectJob($this->jobs[$i], new MaxFileSizeExceededException('Maximum allowed download size reached. Downloaded ' . $progress['size_download'] . ' of allowed ' .  $this->jobs[$i]['options']['max_file_size'] . ' bytes'));
                    }
                }

// TODO progress
            }
        }
    }

/**
     * @param  Job    $job
     * @return string
     */
    private function handleRedirect(array $job, Response $response)
    {
        if ($locationHeader = $response->getHeader('location')) {
            if (parse_url($locationHeader, PHP_URL_SCHEME)) {
                // Absolute URL; e.g. https://example.com/composer
                $targetUrl = $locationHeader;
            } elseif (parse_url($locationHeader, PHP_URL_HOST)) {
                // Scheme relative; e.g. //example.com/foo
                $targetUrl = parse_url($job['url'], PHP_URL_SCHEME).':'.$locationHeader;
            } elseif ('/' === $locationHeader[0]) {
                // Absolute path; e.g. /foo
                $urlHost = parse_url($job['url'], PHP_URL_HOST);

// Replace path using hostname as an anchor.
                $targetUrl = Preg::replace('{^(.+(?://|@)'.preg_quote($urlHost).'(?::\d+)?)(?:[/\?].*)?$}', '\1'.$locationHeader, $job['url']);
            } else {
                // Relative path; e.g. foo
                // This actually differs from PHP which seems to add duplicate slashes.
                $targetUrl = Preg::replace('{^(.+/)[^/?]*(?:\?.*)?$}', '\1'.$locationHeader, $job['url']);
            }
        }

if (!empty($targetUrl)) {
            $this->io->writeError(sprintf('Following redirect (%u) %s', $job['attributes']['redirects'] + 1, Url::sanitize($targetUrl)), true, IOInterface::DEBUG);

return $targetUrl;
        }

throw new TransportException('The "'.$job['url'].'" file could not be downloaded, got redirect without Location ('.$response->getStatusMessage().')');
    }

/**
     * @param  Job                                        $job
     * @return array{retry: bool, storeAuth: string|bool}
     */
    private function isAuthenticatedRetryNeeded(array $job, Response $response)
    {
        if (in_array($response->getStatusCode(), array(401, 403)) && $job['attributes']['retryAuthFailure']) {
            $result = $this->authHelper->promptAuthIfNeeded($job['url'], $job['origin'], $response->getStatusCode(), $response->getStatusMessage(), $response->getHeaders());

if ($result['retry']) {
                return $result;
            }
        }

$locationHeader = $response->getHeader('location');
        $needsAuthRetry = false;

// check for bitbucket login page asking to authenticate
        if (
            $job['origin'] === 'bitbucket.org'
            && !$this->authHelper->isPublicBitBucketDownload($job['url'])
            && substr($job['url'], -4) === '.zip'
            && (!$locationHeader || substr($locationHeader, -4) !== '.zip')
            && Preg::isMatch('{^text/html\b}i', $response->getHeader('content-type'))
        ) {
            $needsAuthRetry = 'Bitbucket requires authentication and it was not provided';
        }

// check for gitlab 404 when downloading archives
        if (
            $response->getStatusCode() === 404
            && in_array($job['origin'], $this->config->get('gitlab-domains'), true)
            && false !== strpos($job['url'], 'archive.zip')
        ) {
            $needsAuthRetry = 'GitLab requires authentication and it was not provided';
        }

if ($needsAuthRetry) {
            if ($job['attributes']['retryAuthFailure']) {
                $result = $this->authHelper->promptAuthIfNeeded($job['url'], $job['origin'], 401);
                if ($result['retry']) {
                    return $result;
                }
            }

throw $this->failResponse($job, $response, $needsAuthRetry);
        }

return array('retry' => false, 'storeAuth' => false);
    }

/**
     * @param  Job    $job
     * @param  string $url
     *
     * @param  array{retryAuthFailure?: bool, redirects?: int, storeAuth?: bool} $attributes
     *
     * @return void
     */
    private function restartJob(array $job, $url, array $attributes = array())
    {
        if ($job['filename']) {
            @unlink($job['filename'].'~');
        }

$attributes = array_merge($job['attributes'], $attributes);
        $origin = Url::getOrigin($this->config, $url);

$this->initDownload($job['resolve'], $job['reject'], $origin, $url, $job['options'], $job['filename'], $attributes);
    }

/**
     * @param  Job                $job
     * @param  string             $errorMessage
     * @return TransportException
     */
    private function failResponse(array $job, Response $response, $errorMessage)
    {
        if ($job['filename']) {
            @unlink($job['filename'].'~');
        }

$details = '';
        if (in_array(strtolower($response->getHeader('content-type')), array('application/json', 'application/json; charset=utf-8'), true)) {
            $details = ':'.PHP_EOL.substr($response->getBody(), 0, 200).(strlen($response->getBody()) > 200 ? '...' : '');
        }

return new TransportException('The "'.$job['url'].'" file could not be downloaded ('.$errorMessage.')' . $details, $response->getStatusCode());
    }

/**
     * @param  Job                $job
     * @return void
     */
    private function rejectJob(array $job, \Exception $e)
    {
        if (is_resource($job['headerHandle'])) {
            fclose($job['headerHandle']);
        }
        if (is_resource($job['bodyHandle'])) {
            fclose($job['bodyHandle']);
        }
        if ($job['filename']) {
            @unlink($job['filename'].'~');
        }
        call_user_func($job['reject'], $e);
    }

/**
     * @param  int  $code
     * @return void
     */
    private function checkCurlResult($code)
    {
        if ($code != CURLM_OK && $code != CURLM_CALL_MULTI_PERFORM) {
            throw new \RuntimeException(
                isset($this->multiErrors[$code])
                ? "cURL error: {$code} ({$this->multiErrors[$code][0]}): cURL message: {$this->multiErrors[$code][1]}"
                : 'Unexpected cURL error: ' . $code
            );
        }
    }
}
<?php

namespace Composer\Util\Http;

/**
 * @phpstan-type CurlInfo array{url: mixed, content_type: mixed, http_code: mixed, header_size: mixed, request_size: mixed, filetime: mixed, ssl_verify_result: mixed, redirect_count: mixed, total_time: mixed, namelookup_time: mixed, connect_time: mixed, pretransfer_time: mixed, size_upload: mixed, size_download: mixed, speed_download: mixed, speed_upload: mixed, download_content_length: mixed, upload_content_length: mixed, starttransfer_time: mixed, redirect_time: mixed, certinfo: mixed, primary_ip: mixed, primary_port: mixed, local_ip: mixed, local_port: mixed, redirect_url: mixed}
 */
class CurlResponse extends Response
{
    /**
     * @see https://www.php.net/curl_getinfo
     * @var CurlInfo
     */
    private $curlInfo;

/**
     * @param CurlInfo $curlInfo
     */
    public function __construct(array $request, $code, array $headers, $body, array $curlInfo)
    {
        parent::__construct($request, $code, $headers, $body);
        $this->curlInfo = $curlInfo;
    }

/**
     * @return CurlInfo
     */
    public function getCurlInfo()
    {
        return $this->curlInfo;
    }
}
<?php

namespace Composer\Util;

/**
 * @author Wissem Riahi <wissemr@gmail.com>
 */
class Tar
{
    /**
     * @param string $pathToArchive
     *
     * @return string|null
     */
    public static function getComposerJson($pathToArchive)
    {
        $phar = new \PharData($pathToArchive);

if (!$phar->valid()) {
            return null;
        }

return self::extractComposerJsonFromFolder($phar);
    }

/**
     * @param \PharData $phar
     *
     * @throws \RuntimeException
     *
     * @return string
     */
    private static function extractComposerJsonFromFolder(\PharData $phar)
    {
        if (isset($phar['composer.json'])) {
            return $phar['composer.json']->getContent();
        }

$topLevelPaths = array();
        foreach ($phar as $folderFile) {
            $name = $folderFile->getBasename();

if ($folderFile->isDir()) {
                $topLevelPaths[$name] = true;
                if (\count($topLevelPaths) > 1) {
                    throw new \RuntimeException('Archive has more than one top level directories, and no composer.json was found on the top level, so it\'s an invalid archive. Top level paths found were: '.implode(',', array_keys($topLevelPaths)));
                }
            }
        }

$composerJsonPath = key($topLevelPaths).'/composer.json';
        if ($topLevelPaths && isset($phar[$composerJsonPath])) {
            return $phar[$composerJsonPath]->getContent();
        }

throw new \RuntimeException('No composer.json found either at the top level or within the topmost directory');
    }
}
<?php

namespace Composer\Util;

use Composer\Pcre\Preg;
use React\Promise\PromiseInterface;
use RecursiveDirectoryIterator;
use RecursiveIteratorIterator;
use Symfony\Component\Filesystem\Exception\IOException;
use Symfony\Component\Finder\Finder;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 * @author Johannes M. Schmitt <schmittjoh@gmail.com>
 */
class Filesystem
{
    /** @var ?ProcessExecutor */
    private $processExecutor;

public function __construct(ProcessExecutor $executor = null)
    {
        $this->processExecutor = $executor;
    }

/**
     * @param string $file
     *
     * @return bool
     */
    public function remove($file)
    {
        if (is_dir($file)) {
            return $this->removeDirectory($file);
        }

if (file_exists($file)) {
            return $this->unlink($file);
        }

return false;
    }

/**
     * Checks if a directory is empty
     *
     * @param  string $dir
     * @return bool
     */
    public function isDirEmpty($dir)
    {
        $finder = Finder::create()
            ->ignoreVCS(false)
            ->ignoreDotFiles(false)
            ->depth(0)
            ->in($dir);

return \count($finder) === 0;
    }

/**
     * @param string $dir
     * @param bool   $ensureDirectoryExists
     *
     * @return void
     */
    public function emptyDirectory($dir, $ensureDirectoryExists = true)
    {
        if (is_link($dir) && file_exists($dir)) {
            $this->unlink($dir);
        }

if ($ensureDirectoryExists) {
            $this->ensureDirectoryExists($dir);
        }

if (is_dir($dir)) {
            $finder = Finder::create()
                ->ignoreVCS(false)
                ->ignoreDotFiles(false)
                ->depth(0)
                ->in($dir);

foreach ($finder as $path) {
                $this->remove((string) $path);
            }
        }
    }

/**
     * Recursively remove a directory
     *
     * Uses the process component if proc_open is enabled on the PHP
     * installation.
     *
     * @param  string            $directory
     * @throws \RuntimeException
     * @return bool
     */
    public function removeDirectory($directory)
    {
        $edgeCaseResult = $this->removeEdgeCases($directory);
        if ($edgeCaseResult !== null) {
            return $edgeCaseResult;
        }

if (Platform::isWindows()) {
            $cmd = sprintf('rmdir /S /Q %s', ProcessExecutor::escape(realpath($directory)));
        } else {
            $cmd = sprintf('rm -rf %s', ProcessExecutor::escape($directory));
        }

$result = $this->getProcess()->execute($cmd, $output) === 0;

// clear stat cache because external processes aren't tracked by the php stat cache
        clearstatcache();

if ($result && !is_dir($directory)) {
            return true;
        }

return $this->removeDirectoryPhp($directory);
    }

/**
     * Recursively remove a directory asynchronously
     *
     * Uses the process component if proc_open is enabled on the PHP
     * installation.
     *
     * @param  string            $directory
     * @throws \RuntimeException
     * @return PromiseInterface
     */
    public function removeDirectoryAsync($directory)
    {
        $edgeCaseResult = $this->removeEdgeCases($directory);
        if ($edgeCaseResult !== null) {
            return \React\Promise\resolve($edgeCaseResult);
        }

$promise = $this->getProcess()->executeAsync($cmd);

$self = $this;

return $promise->then(function ($process) use ($directory, $self) {
            // clear stat cache because external processes aren't tracked by the php stat cache
            clearstatcache();

if ($process->isSuccessful()) {
                if (!is_dir($directory)) {
                    return \React\Promise\resolve(true);
                }
            }

return \React\Promise\resolve($self->removeDirectoryPhp($directory));
        });
    }

/**
     * @param string $directory
     * @param bool   $fallbackToPhp
     *
     * @return bool|null Returns null, when no edge case was hit. Otherwise a bool whether removal was successful
     */
    private function removeEdgeCases($directory, $fallbackToPhp = true)
    {
        if ($this->isSymlinkedDirectory($directory)) {
            return $this->unlinkSymlinkedDirectory($directory);
        }

if ($this->isJunction($directory)) {
            return $this->removeJunction($directory);
        }

if (is_link($directory)) {
            return unlink($directory);
        }

if (!is_dir($directory) || !file_exists($directory)) {
            return true;
        }

if (Preg::isMatch('{^(?:[a-z]:)?[/\\\\]+$}i', $directory)) {
            throw new \RuntimeException('Aborting an attempted deletion of '.$directory.', this was probably not intended, if it is a real use case please report it.');
        }

if (!\function_exists('proc_open') && $fallbackToPhp) {
            return $this->removeDirectoryPhp($directory);
        }

return null;
    }

/**
     * Recursively delete directory using PHP iterators.
     *
     * Uses a CHILD_FIRST RecursiveIteratorIterator to sort files
     * before directories, creating a single non-recursive loop
     * to delete files/directories in the correct order.
     *
     * @param  string $directory
     * @return bool
     */
    public function removeDirectoryPhp($directory)
    {
        $edgeCaseResult = $this->removeEdgeCases($directory, false);
        if ($edgeCaseResult !== null) {
            return $edgeCaseResult;
        }

try {
            $it = new RecursiveDirectoryIterator($directory, RecursiveDirectoryIterator::SKIP_DOTS);
        } catch (\UnexpectedValueException $e) {
            // re-try once after clearing the stat cache if it failed as it
            // sometimes fails without apparent reason, see https://github.com/composer/composer/issues/4009
            clearstatcache();
            usleep(100000);
            if (!is_dir($directory)) {
                return true;
            }
            $it = new RecursiveDirectoryIterator($directory, RecursiveDirectoryIterator::SKIP_DOTS);
        }
        $ri = new RecursiveIteratorIterator($it, RecursiveIteratorIterator::CHILD_FIRST);

foreach ($ri as $file) {
            if ($file->isDir()) {
                $this->rmdir($file->getPathname());
            } else {
                $this->unlink($file->getPathname());
            }
        }

// release locks on the directory, see https://github.com/composer/composer/issues/9945
        unset($ri, $it, $file);

return $this->rmdir($directory);
    }

/**
     * @param string $directory
     *
     * @return void
     */
    public function ensureDirectoryExists($directory)
    {
        if (!is_dir($directory)) {
            if (file_exists($directory)) {
                throw new \RuntimeException(
                    $directory.' exists and is not a directory.'
                );
            }
            if (!@mkdir($directory, 0777, true)) {
                throw new \RuntimeException(
                    $directory.' does not exist and could not be created.'
                );
            }
        }
    }

/**
     * Attempts to unlink a file and in case of failure retries after 350ms on windows
     *
     * @param  string            $path
     * @throws \RuntimeException
     * @return bool
     */
    public function unlink($path)
    {
        $unlinked = @$this->unlinkImplementation($path);
        if (!$unlinked) {
            // retry after a bit on windows since it tends to be touchy with mass removals
            if (Platform::isWindows()) {
                usleep(350000);
                $unlinked = @$this->unlinkImplementation($path);
            }

if (!$unlinked) {
                $error = error_get_last();
                $message = 'Could not delete '.$path.': ' . @$error['message'];
                if (Platform::isWindows()) {
                    $message .= "\nThis can be due to an antivirus or the Windows Search Indexer locking the file while they are analyzed";
                }

throw new \RuntimeException($message);
            }
        }

return true;
    }

/**
     * Attempts to rmdir a file and in case of failure retries after 350ms on windows
     *
     * @param  string            $path
     * @throws \RuntimeException
     * @return bool
     */
    public function rmdir($path)
    {
        $deleted = @rmdir($path);
        if (!$deleted) {
            // retry after a bit on windows since it tends to be touchy with mass removals
            if (Platform::isWindows()) {
                usleep(350000);
                $deleted = @rmdir($path);
            }

if (!$deleted) {
                $error = error_get_last();
                $message = 'Could not delete '.$path.': ' . @$error['message'];
                if (Platform::isWindows()) {
                    $message .= "\nThis can be due to an antivirus or the Windows Search Indexer locking the file while they are analyzed";
                }

throw new \RuntimeException($message);
            }
        }

return true;
    }

/**
     * Copy then delete is a non-atomic version of {@link rename}.
     *
     * Some systems can't rename and also don't have proc_open,
     * which requires this solution.
     *
     * @param string $source
     * @param string $target
     *
     * @return void
     */
    public function copyThenRemove($source, $target)
    {
        $this->copy($source, $target);
        if (!is_dir($source)) {
            $this->unlink($source);

return;
        }

$this->removeDirectoryPhp($source);
    }

/**
     * Copies a file or directory from $source to $target.
     *
     * @param  string $source
     * @param  string $target
     * @return bool
     */
    public function copy($source, $target)
    {
        if (!is_dir($source)) {
            return copy($source, $target);
        }

$it = new RecursiveDirectoryIterator($source, RecursiveDirectoryIterator::SKIP_DOTS);
        $ri = new RecursiveIteratorIterator($it, RecursiveIteratorIterator::SELF_FIRST);
        $this->ensureDirectoryExists($target);

$result = true;
        /** @var RecursiveDirectoryIterator $ri */
        foreach ($ri as $file) {
            $targetPath = $target . DIRECTORY_SEPARATOR . $ri->getSubPathname();
            if ($file->isDir()) {
                $this->ensureDirectoryExists($targetPath);
            } else {
                $result = $result && copy($file->getPathname(), $targetPath);
            }
        }

return $result;
    }

/**
     * @param string $source
     * @param string $target
     *
     * @return void
     */
    public function rename($source, $target)
    {
        if (true === @rename($source, $target)) {
            return;
        }

if (!\function_exists('proc_open')) {
            $this->copyThenRemove($source, $target);

return;
        }

if (Platform::isWindows()) {
            // Try to copy & delete - this is a workaround for random "Access denied" errors.
            $command = sprintf('xcopy %s %s /E /I /Q /Y', ProcessExecutor::escape($source), ProcessExecutor::escape($target));
            $result = $this->getProcess()->execute($command, $output);

// clear stat cache because external processes aren't tracked by the php stat cache
            clearstatcache();

if (0 === $result) {
                $this->remove($source);

return;
            }
        } else {
            // We do not use PHP's "rename" function here since it does not support
            // the case where $source, and $target are located on different partitions.
            $command = sprintf('mv %s %s', ProcessExecutor::escape($source), ProcessExecutor::escape($target));
            $result = $this->getProcess()->execute($command, $output);

// clear stat cache because external processes aren't tracked by the php stat cache
            clearstatcache();

if (0 === $result) {
                return;
            }
        }

$this->copyThenRemove($source, $target);
    }

/**
     * Returns the shortest path from $from to $to
     *
     * @param  string                    $from
     * @param  string                    $to
     * @param  bool                      $directories if true, the source/target are considered to be directories
     * @throws \InvalidArgumentException
     * @return string
     */
    public function findShortestPath($from, $to, $directories = false)
    {
        if (!$this->isAbsolutePath($from) || !$this->isAbsolutePath($to)) {
            throw new \InvalidArgumentException(sprintf('$from (%s) and $to (%s) must be absolute paths.', $from, $to));
        }

$from = lcfirst($this->normalizePath($from));
        $to = lcfirst($this->normalizePath($to));

if ($directories) {
            $from = rtrim($from, '/') . '/dummy_file';
        }

if (\dirname($from) === \dirname($to)) {
            return './'.basename($to);
        }

$commonPath = $to;
        while (strpos($from.'/', $commonPath.'/') !== 0 && '/' !== $commonPath && !Preg::isMatch('{^[a-z]:/?$}i', $commonPath)) {
            $commonPath = strtr(\dirname($commonPath), '\\', '/');
        }

if (0 !== strpos($from, $commonPath) || '/' === $commonPath) {
            return $to;
        }

$commonPath = rtrim($commonPath, '/') . '/';
        $sourcePathDepth = substr_count(substr($from, \strlen($commonPath)), '/');
        $commonPathCode = str_repeat('../', $sourcePathDepth);

return ($commonPathCode . substr($to, \strlen($commonPath))) ?: './';
    }

/**
     * Returns PHP code that, when executed in $from, will return the path to $to
     *
     * @param  string                    $from
     * @param  string                    $to
     * @param  bool                      $directories if true, the source/target are considered to be directories
     * @param  bool                      $staticCode
     * @throws \InvalidArgumentException
     * @return string
     */
    public function findShortestPathCode($from, $to, $directories = false, $staticCode = false)
    {
        if (!$this->isAbsolutePath($from) || !$this->isAbsolutePath($to)) {
            throw new \InvalidArgumentException(sprintf('$from (%s) and $to (%s) must be absolute paths.', $from, $to));
        }

$from = lcfirst($this->normalizePath($from));
        $to = lcfirst($this->normalizePath($to));

if ($from === $to) {
            return $directories ? '__DIR__' : '__FILE__';
        }

$commonPath = $to;
        while (strpos($from.'/', $commonPath.'/') !== 0 && '/' !== $commonPath && !Preg::isMatch('{^[a-z]:/?$}i', $commonPath) && '.' !== $commonPath) {
            $commonPath = strtr(\dirname($commonPath), '\\', '/');
        }

if (0 !== strpos($from, $commonPath) || '/' === $commonPath || '.' === $commonPath) {
            return var_export($to, true);
        }

$commonPath = rtrim($commonPath, '/') . '/';
        if (strpos($to, $from.'/') === 0) {
            return '__DIR__ . '.var_export(substr($to, \strlen($from)), true);
        }
        $sourcePathDepth = substr_count(substr($from, \strlen($commonPath)), '/') + $directories;
        if ($staticCode) {
            $commonPathCode = "__DIR__ . '".str_repeat('/..', $sourcePathDepth)."'";
        } else {
            $commonPathCode = str_repeat('dirname(', $sourcePathDepth).'__DIR__'.str_repeat(')', $sourcePathDepth);
        }
        $relTarget = substr($to, \strlen($commonPath));

return $commonPathCode . (\strlen($relTarget) ? '.' . var_export('/' . $relTarget, true) : '');
    }

/**
     * Checks if the given path is absolute
     *
     * @param  string $path
     * @return bool
     */
    public function isAbsolutePath($path)
    {
        return strpos($path, '/') === 0 || substr($path, 1, 1) === ':' || strpos($path, '\\\\') === 0;
    }

/**
     * Returns size of a file or directory specified by path. If a directory is
     * given, its size will be computed recursively.
     *
     * @param  string            $path Path to the file or directory
     * @throws \RuntimeException
     * @return int
     */
    public function size($path)
    {
        if (!file_exists($path)) {
            throw new \RuntimeException("$path does not exist.");
        }
        if (is_dir($path)) {
            return $this->directorySize($path);
        }

return filesize($path);
    }

/**
     * Normalize a path. This replaces backslashes with slashes, removes ending
     * slash and collapses redundant separators and up-level references.
     *
     * @param  string $path Path to the file or directory
     * @return string
     */
    public function normalizePath($path)
    {
        $parts = array();
        $path = strtr($path, '\\', '/');
        $prefix = '';
        $absolute = '';

// extract windows UNC paths e.g. \\foo\bar
        if (strpos($path, '//') === 0 && \strlen($path) > 2) {
            $absolute = '//';
            $path = substr($path, 2);
        }

// extract a prefix being a protocol://, protocol:, protocol://drive: or simply drive:
        if (Preg::isMatch('{^( [0-9a-z]{2,}+: (?: // (?: [a-z]: )? )? | [a-z]: )}ix', $path, $match)) {
            $prefix = $match[1];
            $path = substr($path, \strlen($prefix));
        }

if (strpos($path, '/') === 0) {
            $absolute = '/';
            $path = substr($path, 1);
        }

$up = false;
        foreach (explode('/', $path) as $chunk) {
            if ('..' === $chunk && ($absolute !== '' || $up)) {
                array_pop($parts);
                $up = !(empty($parts) || '..' === end($parts));
            } elseif ('.' !== $chunk && '' !== $chunk) {
                $parts[] = $chunk;
                $up = '..' !== $chunk;
            }
        }

return $prefix.((string) $absolute).implode('/', $parts);
    }

/**
     * Remove trailing slashes if present to avoid issues with symlinks
     *
     * And other possible unforeseen disasters, see https://github.com/composer/composer/pull/9422
     *
     * @param  string $path
     * @return string
     */
    public static function trimTrailingSlash($path)
    {
        if (!Preg::isMatch('{^[/\\\\]+$}', $path)) {
            $path = rtrim($path, '/\\');
        }

return $path;
    }

/**
     * Return if the given path is local
     *
     * @param  string $path
     * @return bool
     */
    public static function isLocalPath($path)
    {
        return Preg::isMatch('{^(file://(?!//)|/(?!/)|/?[a-z]:[\\\\/]|\.\.[\\\\/]|[a-z0-9_.-]+[\\\\/])}i', $path);
    }

/**
     * @param string $path
     *
     * @return string
     */
    public static function getPlatformPath($path)
    {
        if (Platform::isWindows()) {
            $path = Preg::replace('{^(?:file:///([a-z]):?/)}i', 'file://$1:/', $path);
        }

return (string) Preg::replace('{^file://}i', '', $path);
    }

/**
     * Cross-platform safe version of is_readable()
     *
     * This will also check for readability by reading the file as is_readable can not be trusted on network-mounts
     * and \\wsl$ paths. See https://github.com/composer/composer/issues/8231 and https://bugs.php.net/bug.php?id=68926
     *
     * @param  string $path
     * @return bool
     */
    public static function isReadable($path)
    {
        if (is_readable($path)) {
            return true;
        }

if (is_file($path)) {
            return false !== Silencer::call('file_get_contents', $path, false, null, 0, 1);
        }

if (is_dir($path)) {
            return false !== Silencer::call('opendir', $path);
        }

// assume false otherwise
        return false;
    }

/**
     * @param string $directory
     *
     * @return int
     */
    protected function directorySize($directory)
    {
        $it = new RecursiveDirectoryIterator($directory, RecursiveDirectoryIterator::SKIP_DOTS);
        $ri = new RecursiveIteratorIterator($it, RecursiveIteratorIterator::CHILD_FIRST);

$size = 0;
        foreach ($ri as $file) {
            if ($file->isFile()) {
                $size += $file->getSize();
            }
        }

return $size;
    }

/**
     * @return ProcessExecutor
     */
    protected function getProcess()
    {
        if (!$this->processExecutor) {
            $this->processExecutor = new ProcessExecutor();
        }

return $this->processExecutor;
    }

/**
     * delete symbolic link implementation (commonly known as "unlink()")
     *
     * symbolic links on windows which link to directories need rmdir instead of unlink
     *
     * @param string $path
     *
     * @return bool
     */
    private function unlinkImplementation($path)
    {
        if (Platform::isWindows() && is_dir($path) && is_link($path)) {
            return rmdir($path);
        }

return unlink($path);
    }

/**
     * Creates a relative symlink from $link to $target
     *
     * @param  string $target The path of the binary file to be symlinked
     * @param  string $link   The path where the symlink should be created
     * @return bool
     */
    public function relativeSymlink($target, $link)
    {
        if (!function_exists('symlink')) {
            return false;
        }

$cwd = getcwd();

$relativePath = $this->findShortestPath($link, $target);
        chdir(\dirname($link));
        $result = @symlink($relativePath, $link);

chdir($cwd);

return $result;
    }

/**
     * return true if that directory is a symlink.
     *
     * @param string $directory
     *
     * @return bool
     */
    public function isSymlinkedDirectory($directory)
    {
        if (!is_dir($directory)) {
            return false;
        }

$resolved = $this->resolveSymlinkedDirectorySymlink($directory);

return is_link($resolved);
    }

/**
     * @param string $directory
     *
     * @return bool
     */
    private function unlinkSymlinkedDirectory($directory)
    {
        $resolved = $this->resolveSymlinkedDirectorySymlink($directory);

return $this->unlink($resolved);
    }

/**
     * resolve pathname to symbolic link of a directory
     *
     * @param string $pathname directory path to resolve
     *
     * @return string resolved path to symbolic link or original pathname (unresolved)
     */
    private function resolveSymlinkedDirectorySymlink($pathname)
    {
        if (!is_dir($pathname)) {
            return $pathname;
        }

$resolved = rtrim($pathname, '/');

if (!\strlen($resolved)) {
            return $pathname;
        }

return $resolved;
    }

/**
     * Creates an NTFS junction.
     *
     * @param string $target
     * @param string $junction
     *
     * @return void
     */
    public function junction($target, $junction)
    {
        if (!Platform::isWindows()) {
            throw new \LogicException(sprintf('Function %s is not available on non-Windows platform', __CLASS__));
        }
        if (!is_dir($target)) {
            throw new IOException(sprintf('Cannot junction to "%s" as it is not a directory.', $target), 0, null, $target);
        }
        $cmd = sprintf(
            'mklink /J %s %s',
            ProcessExecutor::escape(str_replace('/', DIRECTORY_SEPARATOR, $junction)),
            ProcessExecutor::escape(realpath($target))
        );
        if ($this->getProcess()->execute($cmd, $output) !== 0) {
            throw new IOException(sprintf('Failed to create junction to "%s" at "%s".', $target, $junction), 0, null, $target);
        }
        clearstatcache(true, $junction);
    }

/**
     * Returns whether the target directory is a Windows NTFS Junction.
     *
     * We test if the path is a directory and not an ordinary link, then check
     * that the mode value returned from lstat (which gives the status of the
     * link itself) is not a directory, by replicating the POSIX S_ISDIR test.
     *
     * This logic works because PHP does not set the mode value for a junction,
     * since there is no universal file type flag for it. Unfortunately an
     * uninitialized variable in PHP prior to 7.2.16 and 7.3.3 may cause a
     * random value to be returned. See https://bugs.php.net/bug.php?id=77552
     *
     * If this random value passes the S_ISDIR test, then a junction will not be
     * detected and a recursive delete operation could lead to loss of data in
     * the target directory. Note that Windows rmdir can handle this situation
     * and will only delete the junction (from Windows 7 onwards).
     *
     * @param  string $junction Path to check.
     * @return bool
     */
    public function isJunction($junction)
    {
        if (!Platform::isWindows()) {
            return false;
        }

// Important to clear all caches first
        clearstatcache(true, $junction);

if (!is_dir($junction) || is_link($junction)) {
            return false;
        }

$stat = lstat($junction);

// S_ISDIR test (S_IFDIR is 0x4000, S_IFMT is 0xF000 bitmask)
        return $stat ? 0x4000 !== ($stat['mode'] & 0xF000) : false;
    }

/**
     * Removes a Windows NTFS junction.
     *
     * @param  string $junction
     * @return bool
     */
    public function removeJunction($junction)
    {
        if (!Platform::isWindows()) {
            return false;
        }
        $junction = rtrim(str_replace('/', DIRECTORY_SEPARATOR, $junction), DIRECTORY_SEPARATOR);
        if (!$this->isJunction($junction)) {
            throw new IOException(sprintf('%s is not a junction and thus cannot be removed as one', $junction));
        }

return $this->rmdir($junction);
    }

/**
     * @param string $path
     * @param string $content
     *
     * @return int|false
     */
    public function filePutContentsIfModified($path, $content)
    {
        $currentContent = @file_get_contents($path);
        if (!$currentContent || ($currentContent != $content)) {
            return file_put_contents($path, $content);
        }

return 0;
    }

/**
     * Copy file using stream_copy_to_stream to work around https://bugs.php.net/bug.php?id=6463
     *
     * @param string $source
     * @param string $target
     *
     * @return void
     */
    public function safeCopy($source, $target)
    {
        if (!file_exists($target) || !file_exists($source) || !$this->filesAreEqual($source, $target)) {
            $source = fopen($source, 'r');
            $target = fopen($target, 'w+');

stream_copy_to_stream($source, $target);
            fclose($source);
            fclose($target);
        }
    }

/**
     * compare 2 files
     * https://stackoverflow.com/questions/3060125/can-i-use-file-get-contents-to-compare-two-files
     *
     * @param string $a
     * @param string $b
     *
     * @return bool
     */
    private function filesAreEqual($a, $b)
    {
        // Check if filesize is different
        if (filesize($a) !== filesize($b)) {
            return false;
        }

// Check if content is different
        $ah = fopen($a, 'rb');
        $bh = fopen($b, 'rb');

$result = true;
        while (!feof($ah)) {
            if (fread($ah, 8192) != fread($bh, 8192)) {
                $result = false;
                break;
            }
        }

fclose($ah);
        fclose($bh);

return $result;
    }
}
<?php

namespace Composer\Util;

use Composer\Pcre\Preg;

/**
 * Platform helper for uniform platform-specific tests.
 *
 * @author Niels Keurentjes <niels.keurentjes@omines.com>
 */
class Platform
{
    /** @var ?bool */
    private static $isVirtualBoxGuest = null;
    /** @var ?bool */
    private static $isWindowsSubsystemForLinux = null;

/**
     * getenv() equivalent but reads from the runtime global variables first
     *
     * @param  string $name
     * @return string|false
     */
    public static function getEnv($name)
    {
        if (array_key_exists($name, $_SERVER)) {
            return (string) $_SERVER[$name];
        }
        if (array_key_exists($name, $_ENV)) {
            return (string) $_ENV[$name];
        }

return getenv($name);
    }

/**
     * putenv() equivalent but updates the runtime global variables too
     *
     * @param  string $name
     * @param  string $value
     * @return void
     */
    public static function putEnv($name, $value)
    {
        $value = (string) $value;
        putenv($name . '=' . $value);
        $_SERVER[$name] = $_ENV[$name] = $value;
    }

/**
     * putenv('X') equivalent but updates the runtime global variables too
     *
     * @param  string $name
     * @return void
     */
    public static function clearEnv($name)
    {
        putenv($name);
        unset($_SERVER[$name], $_ENV[$name]);
    }

/**
     * Parses tildes and environment variables in paths.
     *
     * @param  string $path
     * @return string
     */
    public static function expandPath($path)
    {
        if (Preg::isMatch('#^~[\\/]#', $path)) {
            return self::getUserDirectory() . substr($path, 1);
        }

return Preg::replaceCallback('#^(\$|(?P<percent>%))(?P<var>\w++)(?(percent)%)(?P<path>.*)#', function ($matches) {
            // Treat HOME as an alias for USERPROFILE on Windows for legacy reasons
            if (Platform::isWindows() && $matches['var'] == 'HOME') {
                return (Platform::getEnv('HOME') ?: Platform::getEnv('USERPROFILE')) . $matches['path'];
            }

return Platform::getEnv($matches['var']) . $matches['path'];
        }, $path);
    }

/**
     * @throws \RuntimeException If the user home could not reliably be determined
     * @return string            The formal user home as detected from environment parameters
     */
    public static function getUserDirectory()
    {
        if (false !== ($home = self::getEnv('HOME'))) {
            return $home;
        }

if (self::isWindows() && false !== ($home = self::getEnv('USERPROFILE'))) {
            return $home;
        }

if (\function_exists('posix_getuid') && \function_exists('posix_getpwuid')) {
            $info = posix_getpwuid(posix_getuid());

return $info['dir'];
        }

throw new \RuntimeException('Could not determine user directory');
    }

/**
     * @return bool Whether the host machine is running on the Windows Subsystem for Linux (WSL)
     */
    public static function isWindowsSubsystemForLinux()
    {
        if (null === self::$isWindowsSubsystemForLinux) {
            self::$isWindowsSubsystemForLinux = false;

// while WSL will be hosted within windows, WSL itself cannot be windows based itself.
            if (self::isWindows()) {
                return self::$isWindowsSubsystemForLinux = false;
            }

if (
                !ini_get('open_basedir')
                && is_readable('/proc/version')
                && false !== stripos(Silencer::call('file_get_contents', '/proc/version'), 'microsoft')
                && !file_exists('/.dockerenv') // docker running inside WSL should not be seen as WSL
            ) {
                return self::$isWindowsSubsystemForLinux = true;
            }
        }

return self::$isWindowsSubsystemForLinux;
    }

/**
     * @return bool Whether the host machine is running a Windows OS
     */
    public static function isWindows()
    {
        return \defined('PHP_WINDOWS_VERSION_BUILD');
    }

/**
     * @param  string $str
     * @return int    return a guaranteed binary length of the string, regardless of silly mbstring configs
     */
    public static function strlen($str)
    {
        static $useMbString = null;
        if (null === $useMbString) {
            $useMbString = \function_exists('mb_strlen') && ini_get('mbstring.func_overload');
        }

if ($useMbString) {
            return mb_strlen($str, '8bit');
        }

return \strlen($str);
    }

/**
     * @param  ?resource $fd Open file descriptor or null to default to STDOUT
     * @return bool
     */
    public static function isTty($fd = null)
    {
        if ($fd === null) {
            $fd = defined('STDOUT') ? STDOUT : fopen('php://stdout', 'w');
        }

// detect msysgit/mingw and assume this is a tty because detection
        // does not work correctly, see https://github.com/composer/composer/issues/9690
        if (in_array(strtoupper(self::getEnv('MSYSTEM') ?: ''), array('MINGW32', 'MINGW64'), true)) {
            return true;
        }

// modern cross-platform function, includes the fstat
        // fallback so if it is present we trust it
        if (function_exists('stream_isatty')) {
            return stream_isatty($fd);
        }

// only trusting this if it is positive, otherwise prefer fstat fallback
        if (function_exists('posix_isatty') && posix_isatty($fd)) {
            return true;
        }

$stat = @fstat($fd);
        // Check if formatted mode is S_IFCHR
        return $stat ? 0020000 === ($stat['mode'] & 0170000) : false;
    }

/**
     * @return void
     */
    public static function workaroundFilesystemIssues()
    {
        if (self::isVirtualBoxGuest()) {
            usleep(200000);
        }
    }

/**
     * Attempts detection of VirtualBox guest VMs
     *
     * This works based on the process' user being "vagrant", the COMPOSER_RUNTIME_ENV env var being set to "virtualbox", or lsmod showing the virtualbox guest additions are loaded
     *
     * @return bool
     */
    private static function isVirtualBoxGuest()
    {
        if (null === self::$isVirtualBoxGuest) {
            self::$isVirtualBoxGuest = false;
            if (self::isWindows()) {
                return self::$isVirtualBoxGuest;
            }

if (function_exists('posix_getpwuid') && function_exists('posix_geteuid')) {
                $processUser = posix_getpwuid(posix_geteuid());
                if ($processUser && $processUser['name'] === 'vagrant') {
                    return self::$isVirtualBoxGuest = true;
                }
            }

if (self::getEnv('COMPOSER_RUNTIME_ENV') === 'virtualbox') {
                return self::$isVirtualBoxGuest = true;
            }

if (defined('PHP_OS_FAMILY') && PHP_OS_FAMILY === 'Linux') {
                $process = new ProcessExecutor();
                try {
                    if (0 === $process->execute('lsmod | grep vboxguest', $ignoredOutput)) {
                        return self::$isVirtualBoxGuest = true;
                    }
                } catch (\Exception $e) {
                    // noop
                }
            }
        }

return self::$isVirtualBoxGuest;
    }
}
<?php

namespace Composer\Util;

use Composer\Composer;
use Composer\CaBundle\CaBundle;
use Composer\Downloader\TransportException;
use Composer\Repository\PlatformRepository;
use Composer\Util\Http\ProxyManager;
use Psr\Log\LoggerInterface;

/**
 * Allows the creation of a basic context supporting http proxy
 *
 * @author Jordan Alliot <jordan.alliot@gmail.com>
 * @author Markus Tacker <m@coderbyheart.de>
 */
final class StreamContextFactory
{
    /**
     * Creates a context supporting HTTP proxies
     *
     * @param string $url URL the context is to be used for
     * @phpstan-param array{http?: array{follow_location?: int, max_redirects?: int, header?: string|array<string>}} $defaultOptions
     * @param  mixed[]           $defaultOptions Options to merge with the default
     * @param  mixed[]           $defaultParams  Parameters to specify on the context
     * @throws \RuntimeException if https proxy required and OpenSSL uninstalled
     * @return resource          Default context
     */
    public static function getContext($url, array $defaultOptions = array(), array $defaultParams = array())
    {
        $options = array('http' => array(
            // specify defaults again to try and work better with curlwrappers enabled
            'follow_location' => 1,
            'max_redirects' => 20,
        ));

$options = array_replace_recursive($options, self::initOptions($url, $defaultOptions));
        unset($defaultOptions['http']['header']);
        $options = array_replace_recursive($options, $defaultOptions);

if (isset($options['http']['header'])) {
            $options['http']['header'] = self::fixHttpHeaderField($options['http']['header']);
        }

return stream_context_create($options, $defaultParams);
    }

/**
     * @param string  $url
     * @param mixed[] $options
     * @param bool    $forCurl When true, will not add proxy values as these are handled separately
     * @phpstan-return array{http: array{header: string[], proxy?: string, request_fulluri: bool}, ssl?: mixed[]}
     * @return array formatted as a stream context array
     */
    public static function initOptions($url, array $options, $forCurl = false)
    {
        // Make sure the headers are in an array form
        if (!isset($options['http']['header'])) {
            $options['http']['header'] = array();
        }
        if (is_string($options['http']['header'])) {
            $options['http']['header'] = explode("\r\n", $options['http']['header']);
        }

// Add stream proxy options if there is a proxy
        if (!$forCurl) {
            $proxy = ProxyManager::getInstance()->getProxyForRequest($url);
            if ($proxyOptions = $proxy->getContextOptions()) {
                $isHttpsRequest = 0 === strpos($url, 'https://');

if ($proxy->isSecure()) {
                    if (!extension_loaded('openssl')) {
                        throw new TransportException('You must enable the openssl extension to use a secure proxy.');
                    }
                    if ($isHttpsRequest) {
                        throw new TransportException('You must enable the curl extension to make https requests through a secure proxy.');
                    }
                } elseif ($isHttpsRequest && !extension_loaded('openssl')) {
                    throw new TransportException('You must enable the openssl extension to make https requests through a proxy.');
                }

// Header will be a Proxy-Authorization string or not set
                if (isset($proxyOptions['http']['header'])) {
                    $options['http']['header'][] = $proxyOptions['http']['header'];
                    unset($proxyOptions['http']['header']);
                }
                $options = array_replace_recursive($options, $proxyOptions);
            }
        }

if (defined('HHVM_VERSION')) {
            $phpVersion = 'HHVM ' . HHVM_VERSION;
        } else {
            $phpVersion = 'PHP ' . PHP_MAJOR_VERSION . '.' . PHP_MINOR_VERSION . '.' . PHP_RELEASE_VERSION;
        }

if ($forCurl) {
            $curl = curl_version();
            $httpVersion = 'cURL '.$curl['version'];
        } else {
            $httpVersion = 'streams';
        }

if (!isset($options['http']['header']) || false === stripos(implode('', $options['http']['header']), 'user-agent')) {
            $platformPhpVersion = PlatformRepository::getPlatformPhpVersion();
            $options['http']['header'][] = sprintf(
                'User-Agent: Composer/%s (%s; %s; %s; %s%s%s)',
                Composer::getVersion(),
                function_exists('php_uname') ? php_uname('s') : 'Unknown',
                function_exists('php_uname') ? php_uname('r') : 'Unknown',
                $phpVersion,
                $httpVersion,
                $platformPhpVersion ? '; Platform-PHP '.$platformPhpVersion : '',
                Platform::getEnv('CI') ? '; CI' : ''
            );
        }

return $options;
    }

/**
     * @param mixed[] $options
     *
     * @return mixed[]
     */
    public static function getTlsDefaults(array $options, LoggerInterface $logger = null)
    {
        $ciphers = implode(':', array(
            'ECDHE-RSA-AES128-GCM-SHA256',
            'ECDHE-ECDSA-AES128-GCM-SHA256',
            'ECDHE-RSA-AES256-GCM-SHA384',
            'ECDHE-ECDSA-AES256-GCM-SHA384',
            'DHE-RSA-AES128-GCM-SHA256',
            'DHE-DSS-AES128-GCM-SHA256',
            'kEDH+AESGCM',
            'ECDHE-RSA-AES128-SHA256',
            'ECDHE-ECDSA-AES128-SHA256',
            'ECDHE-RSA-AES128-SHA',
            'ECDHE-ECDSA-AES128-SHA',
            'ECDHE-RSA-AES256-SHA384',
            'ECDHE-ECDSA-AES256-SHA384',
            'ECDHE-RSA-AES256-SHA',
            'ECDHE-ECDSA-AES256-SHA',
            'DHE-RSA-AES128-SHA256',
            'DHE-RSA-AES128-SHA',
            'DHE-DSS-AES128-SHA256',
            'DHE-RSA-AES256-SHA256',
            'DHE-DSS-AES256-SHA',
            'DHE-RSA-AES256-SHA',
            'AES128-GCM-SHA256',
            'AES256-GCM-SHA384',
            'AES128-SHA256',
            'AES256-SHA256',
            'AES128-SHA',
            'AES256-SHA',
            'AES',
            'CAMELLIA',
            'DES-CBC3-SHA',
            '!aNULL',
            '!eNULL',
            '!EXPORT',
            '!DES',
            '!RC4',
            '!MD5',
            '!PSK',
            '!aECDH',
            '!EDH-DSS-DES-CBC3-SHA',
            '!EDH-RSA-DES-CBC3-SHA',
            '!KRB5-DES-CBC3-SHA',
        ));

/**
         * CN_match and SNI_server_name are only known once a URL is passed.
         * They will be set in the getOptionsForUrl() method which receives a URL.
         *
         * cafile or capath can be overridden by passing in those options to constructor.
         */
        $defaults = array(
            'ssl' => array(
                'ciphers' => $ciphers,
                'verify_peer' => true,
                'verify_depth' => 7,
                'SNI_enabled' => true,
                'capture_peer_cert' => true,
            ),
        );

if (isset($options['ssl'])) {
            $defaults['ssl'] = array_replace_recursive($defaults['ssl'], $options['ssl']);
        }

/**
         * Attempt to find a local cafile or throw an exception if none pre-set
         * The user may go download one if this occurs.
         */
        if (!isset($defaults['ssl']['cafile']) && !isset($defaults['ssl']['capath'])) {
            $result = CaBundle::getSystemCaRootBundlePath($logger);

if (is_dir($result)) {
                $defaults['ssl']['capath'] = $result;
            } else {
                $defaults['ssl']['cafile'] = $result;
            }
        }

if (isset($defaults['ssl']['cafile']) && (!Filesystem::isReadable($defaults['ssl']['cafile']) || !CaBundle::validateCaFile($defaults['ssl']['cafile'], $logger))) {
            throw new TransportException('The configured cafile was not valid or could not be read.');
        }

if (isset($defaults['ssl']['capath']) && (!is_dir($defaults['ssl']['capath']) || !Filesystem::isReadable($defaults['ssl']['capath']))) {
            throw new TransportException('The configured capath was not valid or could not be read.');
        }

/**
         * Disable TLS compression to prevent CRIME attacks where supported.
         */
        if (PHP_VERSION_ID >= 50413) {
            $defaults['ssl']['disable_compression'] = true;
        }

return $defaults;
    }

/**
     * A bug in PHP prevents the headers from correctly being sent when a content-type header is present and
     * NOT at the end of the array
     *
     * This method fixes the array by moving the content-type header to the end
     *
     * @link https://bugs.php.net/bug.php?id=61548
     * @param  string|string[] $header
     * @return string[]
     */
    private static function fixHttpHeaderField($header)
    {
        if (!is_array($header)) {
            $header = explode("\r\n", $header);
        }
        uasort($header, function ($el) {
            return stripos($el, 'content-type') === 0 ? 1 : -1;
        });

return $header;
    }
}
<?php

namespace Composer\Util;

use Composer\Downloader\DownloaderInterface;
use Composer\Package\PackageInterface;
use React\Promise\PromiseInterface;

class SyncHelper
{
    /**
     * Helps you download + install a single package in a synchronous way
     *
     * This executes all the required steps and waits for promises to complete
     *
     * @param Loop                  $loop        Loop instance which you can get from $composer->getLoop()
     * @param DownloaderInterface   $downloader  Downloader instance you can get from $composer->getDownloadManager()->getDownloader('zip') for example
     * @param string                $path        the installation path for the package
     * @param PackageInterface      $package     the package to install
     * @param PackageInterface|null $prevPackage the previous package if this is an update and not an initial installation
     *
     * @return void
     */
    public static function downloadAndInstallPackageSync(Loop $loop, DownloaderInterface $downloader, $path, PackageInterface $package, PackageInterface $prevPackage = null)
    {
        $type = $prevPackage ? 'update' : 'install';

try {
            self::await($loop, $downloader->download($package, $path, $prevPackage));

self::await($loop, $downloader->prepare($type, $package, $path, $prevPackage));

if ($type === 'update') {
                self::await($loop, $downloader->update($package, $prevPackage, $path));
            } else {
                self::await($loop, $downloader->install($package, $path));
            }
        } catch (\Exception $e) {
            self::await($loop, $downloader->cleanup($type, $package, $path, $prevPackage));
            throw $e;
        }

self::await($loop, $downloader->cleanup($type, $package, $path, $prevPackage));
    }

/**
     * Waits for a promise to resolve
     *
     * @param Loop                  $loop    Loop instance which you can get from $composer->getLoop()
     * @param PromiseInterface|null $promise
     *
     * @return void
     */
    public static function await(Loop $loop, PromiseInterface $promise = null)
    {
        if ($promise) {
            $loop->wait(array($promise));
        }
    }
}
<?php

namespace Composer\Util;

use Composer\Factory;
use Composer\IO\IOInterface;
use Composer\Config;
use Composer\Downloader\TransportException;
use Composer\Pcre\Preg;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class GitHub
{
    /** @var IOInterface */
    protected $io;
    /** @var Config */
    protected $config;
    /** @var ProcessExecutor */
    protected $process;
    /** @var HttpDownloader */
    protected $httpDownloader;

/**
     * Attempts to authorize a GitHub domain via OAuth
     *
     * @param  string $originUrl The host this GitHub instance is located at
     * @return bool   true on success
     */
    public function authorizeOAuth($originUrl)
    {
        if (!in_array($originUrl, $this->config->get('github-domains'))) {
            return false;
        }

// if available use token from git config
        if (0 === $this->process->execute('git config github.accesstoken', $output)) {
            $this->io->setAuthentication($originUrl, trim($output), 'x-oauth-basic');

return true;
        }

return false;
    }

/**
     * Authorizes a GitHub domain interactively via OAuth
     *
     * @param  string                        $originUrl The host this GitHub instance is located at
     * @param  string                        $message   The reason this authorization is required
     * @throws \RuntimeException
     * @throws TransportException|\Exception
     * @return bool                          true on success
     */
    public function authorizeOAuthInteractively($originUrl, $message = null)
    {
        if ($message) {
            $this->io->writeError($message);
        }

$note = 'Composer';
        if ($this->config->get('github-expose-hostname') === true && 0 === $this->process->execute('hostname', $output)) {
            $note .= ' on ' . trim($output);
        }
        $note .= ' ' . date('Y-m-d Hi');

$url = 'https://'.$originUrl.'/settings/tokens/new?scopes=&description=' . str_replace('%20', '+', rawurlencode($note));
        $this->io->writeError(sprintf('When working with _public_ GitHub repositories only, head to %s to retrieve a token.', $url));
        $this->io->writeError('This token will have read-only permission for public information only.');

$url = 'https://'.$originUrl.'/settings/tokens/new?scopes=repo&description=' . str_replace('%20', '+', rawurlencode($note));
        $this->io->writeError(sprintf('When you need to access _private_ GitHub repositories as well, go to %s', $url));
        $this->io->writeError('Note that such tokens have broad read/write permissions on your behalf, even if not needed by Composer.');
        $this->io->writeError(sprintf('Tokens will be stored in plain text in "%s" for future use by Composer.', $this->config->getAuthConfigSource()->getName()));
        $this->io->writeError('For additional information, check https://getcomposer.org/doc/articles/authentication-for-private-packages.md#github-oauth');

$token = trim($this->io->askAndHideAnswer('Token (hidden): '));

if (!$token) {
            $this->io->writeError('<warning>No token given, aborting.</warning>');
            $this->io->writeError('You can also add it manually later by using "composer config --global --auth github-oauth.github.com <token>"');

return false;
        }

$this->io->setAuthentication($originUrl, $token, 'x-oauth-basic');

try {
            $apiUrl = ('github.com' === $originUrl) ? 'api.github.com/' : $originUrl . '/api/v3/';

$this->httpDownloader->get('https://'. $apiUrl, array(
                'retry-auth-failure' => false,
            ));
        } catch (TransportException $e) {
            if (in_array($e->getCode(), array(403, 401))) {
                $this->io->writeError('<error>Invalid token provided.</error>');
                $this->io->writeError('You can also add it manually later by using "composer config --global --auth github-oauth.github.com <token>"');

return false;
            }

throw $e;
        }

// store value in user config
        $this->config->getConfigSource()->removeConfigSetting('github-oauth.'.$originUrl);
        $this->config->getAuthConfigSource()->addConfigSetting('github-oauth.'.$originUrl, $token);

$this->io->writeError('<info>Token stored successfully.</info>');

return true;
    }

/**
     * Extract rate limit from response.
     *
     * @param string[] $headers Headers from Composer\Downloader\TransportException.
     *
     * @return array{limit: int|'?', reset: string}
     */
    public function getRateLimit(array $headers)
    {
        $rateLimit = array(
            'limit' => '?',
            'reset' => '?',
        );

foreach ($headers as $header) {
            $header = trim($header);
            if (false === strpos($header, 'X-RateLimit-')) {
                continue;
            }
            list($type, $value) = explode(':', $header, 2);
            switch ($type) {
                case 'X-RateLimit-Limit':
                    $rateLimit['limit'] = (int) trim($value);
                    break;
                case 'X-RateLimit-Reset':
                    $rateLimit['reset'] = date('Y-m-d H:i:s', (int) trim($value));
                    break;
            }
        }

return $rateLimit;
    }

/**
     * Extract SSO URL from response.
     *
     * @param string[] $headers Headers from Composer\Downloader\TransportException.
     *
     * @return string|null
     */
    public function getSsoUrl(array $headers)
    {
        foreach ($headers as $header) {
            $header = trim($header);
            if (false === stripos($header, 'x-github-sso: required')) {
                continue;
            }
            if (Preg::isMatch('{\burl=(?P<url>[^\s;]+)}', $header, $match)) {
                return $match['url'];
            }
        }

return null;
    }

/**
     * Finds whether a request failed due to rate limiting
     *
     * @param string[] $headers Headers from Composer\Downloader\TransportException.
     *
     * @return bool
     */
    public function isRateLimited(array $headers)
    {
        foreach ($headers as $header) {
            if (Preg::isMatch('{^X-RateLimit-Remaining: *0$}i', trim($header))) {
                return true;
            }
        }

return false;
    }

/**
     * Finds whether a request failed due to lacking SSO authorization
     *
     * @see https://docs.github.com/en/rest/overview/other-authentication-methods#authenticating-for-saml-sso
     *
     * @param string[] $headers Headers from Composer\Downloader\TransportException.
     *
     * @return bool
     */
    public function requiresSso(array $headers)
    {
        foreach ($headers as $header) {
            if (Preg::isMatch('{^X-GitHub-SSO: required}i', trim($header))) {
                return true;
            }
        }

return false;
    }
}
<?php

namespace Composer\Util;

use Composer\XdebugHandler\XdebugHandler;

/**
 * Provides ini file location functions that work with and without a restart.
 * When the process has restarted it uses a tmp ini and stores the original
 * ini locations in an environment variable.
 *
 * @author John Stevenson <john-stevenson@blueyonder.co.uk>
 */
class IniHelper
{
    /**
     * Returns an array of php.ini locations with at least one entry
     *
     * The equivalent of calling php_ini_loaded_file then php_ini_scanned_files.
     * The loaded ini location is the first entry and may be empty.
     *
     * @return string[]
     */
    public static function getAll()
    {
        return XdebugHandler::getAllIniFiles();
    }

/**
     * Describes the location of the loaded php.ini file(s)
     *
     * @return string
     */
    public static function getMessage()
    {
        $paths = self::getAll();

if (empty($paths[0])) {
            array_shift($paths);
        }

$ini = array_shift($paths);

if (empty($ini)) {
            return 'A php.ini file does not exist. You will have to create one.';
        }

if (!empty($paths)) {
            return 'Your command-line PHP is using multiple ini files. Run `php --ini` to show them.';
        }

return 'The php.ini used by your command-line PHP is: '.$ini;
    }
}
<?php

namespace Composer\Util;

use Composer\Pcre\Preg;

/**
 * Composer mirror utilities
 *
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class ComposerMirror
{
    /**
     * @param string      $mirrorUrl
     * @param string      $packageName
     * @param string      $version
     * @param string|null $reference
     * @param string|null $type
     * @param string|null $prettyVersion
     *
     * @return string
     */
    public static function processUrl($mirrorUrl, $packageName, $version, $reference, $type, $prettyVersion = null)
    {
        if ($reference) {
            $reference = Preg::isMatch('{^([a-f0-9]*|%reference%)$}', $reference) ? $reference : md5($reference);
        }
        $version = strpos($version, '/') === false ? $version : md5($version);

$from = array('%package%', '%version%', '%reference%', '%type%');
        $to = array($packageName, $version, $reference, $type);
        if (null !== $prettyVersion) {
            $from[] = '%prettyVersion%';
            $to[] = $prettyVersion;
        }

return str_replace($from, $to, $mirrorUrl);
    }

/**
     * @param string      $mirrorUrl
     * @param string      $packageName
     * @param string      $url
     * @param string|null $type
     *
     * @return string
     */
    public static function processGitUrl($mirrorUrl, $packageName, $url, $type)
    {
        if (Preg::isMatch('#^(?:(?:https?|git)://github\.com/|git@github\.com:)([^/]+)/(.+?)(?:\.git)?$#', $url, $match)) {
            $url = 'gh-'.$match[1].'/'.$match[2];
        } elseif (Preg::isMatch('#^https://bitbucket\.org/([^/]+)/(.+?)(?:\.git)?/?$#', $url, $match)) {
            $url = 'bb-'.$match[1].'/'.$match[2];
        } else {
            $url = Preg::replace('{[^a-z0-9_.-]}i', '-', trim($url, '/'));
        }

return str_replace(
            array('%package%', '%normalizedUrl%', '%type%'),
            array($packageName, $url, $type),
            $mirrorUrl
        );
    }

/**
     * @param string $mirrorUrl
     * @param string $packageName
     * @param string $url
     * @param string $type
     *
     * @return string
     */
    public static function processHgUrl($mirrorUrl, $packageName, $url, $type)
    {
        return self::processGitUrl($mirrorUrl, $packageName, $url, $type);
    }
}
<?php

namespace Composer\Util;

use Composer\Package\PackageInterface;

class PackageSorter
{
    /**
     * Sorts packages by dependency weight
     *
     * Packages of equal weight retain the original order
     *
     * @param  PackageInterface[] $packages
     * @return PackageInterface[] sorted array
     */
    public static function sortPackages(array $packages)
    {
        $usageList = array();

foreach ($packages as $package) {
            foreach (array_merge($package->getRequires(), $package->getDevRequires()) as $link) {
                $target = $link->getTarget();
                $usageList[$target][] = $package->getName();
            }
        }
        $computing = array();
        $computed = array();
        $computeImportance = function ($name) use (&$computeImportance, &$computing, &$computed, $usageList) {
            // reusing computed importance
            if (isset($computed[$name])) {
                return $computed[$name];
            }

// canceling circular dependency
            if (isset($computing[$name])) {
                return 0;
            }

$computing[$name] = true;
            $weight = 0;

if (isset($usageList[$name])) {
                foreach ($usageList[$name] as $user) {
                    $weight -= 1 - $computeImportance($user);
                }
            }

unset($computing[$name]);
            $computed[$name] = $weight;

return $weight;
        };

$weightList = array();

foreach ($packages as $index => $package) {
            $weight = $computeImportance($package->getName());
            $weightList[$index] = $weight;
        }

$stable_sort = function (&$array) {
            static $transform, $restore;

$i = 0;

if (!$transform) {
                $transform = function (&$v, $k) use (&$i) {
                    $v = array($v, ++$i, $k, $v);
                };

$restore = function (&$v) {
                    $v = $v[3];
                };
            }

array_walk($array, $transform);
            asort($array);
            array_walk($array, $restore);
        };

$stable_sort($weightList);

$sortedPackages = array();

foreach (array_keys($weightList) as $index) {
            $sortedPackages[] = $packages[$index];
        }

return $sortedPackages;
    }
}
<?php

namespace Composer\Util;

use React\Promise\CancellablePromiseInterface;
use Symfony\Component\Console\Helper\ProgressBar;
use React\Promise\PromiseInterface;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class Loop
{
    /** @var HttpDownloader */
    private $httpDownloader;
    /** @var ProcessExecutor|null */
    private $processExecutor;
    /** @var PromiseInterface[][] */
    private $currentPromises = array();
    /** @var int */
    private $waitIndex = 0;

public function __construct(HttpDownloader $httpDownloader, ProcessExecutor $processExecutor = null)
    {
        $this->httpDownloader = $httpDownloader;
        $this->httpDownloader->enableAsync();

$this->processExecutor = $processExecutor;
        if ($this->processExecutor) {
            $this->processExecutor->enableAsync();
        }
    }

/**
     * @return HttpDownloader
     */
    public function getHttpDownloader()
    {
        return $this->httpDownloader;
    }

/**
     * @return ProcessExecutor|null
     */
    public function getProcessExecutor()
    {
        return $this->processExecutor;
    }

/**
     * @param  PromiseInterface[] $promises
     * @param  ?ProgressBar       $progress
     * @return void
     */
    public function wait(array $promises, ProgressBar $progress = null)
    {
        /** @var \Exception|null */
        $uncaught = null;

\React\Promise\all($promises)->then(
            function () {
            },
            function ($e) use (&$uncaught) {
                $uncaught = $e;
            }
        );

// keep track of every group of promises that is waited on, so abortJobs can
        // cancel them all, even if wait() was called within a wait()
        $waitIndex = $this->waitIndex++;
        $this->currentPromises[$waitIndex] = $promises;

if ($progress) {
            $totalJobs = 0;
            $totalJobs += $this->httpDownloader->countActiveJobs();
            if ($this->processExecutor) {
                $totalJobs += $this->processExecutor->countActiveJobs();
            }
            $progress->start($totalJobs);
        }

$lastUpdate = 0;
        while (true) {
            $activeJobs = 0;

$activeJobs += $this->httpDownloader->countActiveJobs();
            if ($this->processExecutor) {
                $activeJobs += $this->processExecutor->countActiveJobs();
            }

if ($progress && microtime(true) - $lastUpdate > 0.1) {
                $lastUpdate = microtime(true);
                $progress->setProgress($progress->getMaxSteps() - $activeJobs);
            }

if (!$activeJobs) {
                break;
            }
        }

// as we skip progress updates if they are too quick, make sure we do one last one here at 100%
        if ($progress) {
            $progress->finish();
        }

unset($this->currentPromises[$waitIndex]);
        if ($uncaught) {
            throw $uncaught;
        }
    }

/**
     * @return void
     */
    public function abortJobs()
    {
        foreach ($this->currentPromises as $promiseGroup) {
            foreach ($promiseGroup as $promise) {
                if ($promise instanceof CancellablePromiseInterface) {
                    $promise->cancel();
                }
            }
        }
    }
}
<?php

namespace Composer\Util;

use Composer\Config;
use Composer\Pcre\Preg;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class Url
{
    /**
     * @param  Config $config
     * @param  string $url
     * @param  string $ref
     * @return string the updated URL
     */
    public static function updateDistReference(Config $config, $url, $ref)
    {
        $host = parse_url($url, PHP_URL_HOST);

if ($host === 'api.github.com' || $host === 'github.com' || $host === 'www.github.com') {
            if (Preg::isMatch('{^https?://(?:www\.)?github\.com/([^/]+)/([^/]+)/(zip|tar)ball/(.+)$}i', $url, $match)) {
                // update legacy github archives to API calls with the proper reference
                $url = 'https://api.github.com/repos/' . $match[1] . '/'. $match[2] . '/' . $match[3] . 'ball/' . $ref;
            } elseif (Preg::isMatch('{^https?://(?:www\.)?github\.com/([^/]+)/([^/]+)/archive/.+\.(zip|tar)(?:\.gz)?$}i', $url, $match)) {
                // update current github web archives to API calls with the proper reference
                $url = 'https://api.github.com/repos/' . $match[1] . '/'. $match[2] . '/' . $match[3] . 'ball/' . $ref;
            } elseif (Preg::isMatch('{^https?://api\.github\.com/repos/([^/]+)/([^/]+)/(zip|tar)ball(?:/.+)?$}i', $url, $match)) {
                // update api archives to the proper reference
                $url = 'https://api.github.com/repos/' . $match[1] . '/'. $match[2] . '/' . $match[3] . 'ball/' . $ref;
            }
        } elseif ($host === 'bitbucket.org' || $host === 'www.bitbucket.org') {
            if (Preg::isMatch('{^https?://(?:www\.)?bitbucket\.org/([^/]+)/([^/]+)/get/(.+)\.(zip|tar\.gz|tar\.bz2)$}i', $url, $match)) {
                // update Bitbucket archives to the proper reference
                $url = 'https://bitbucket.org/' . $match[1] . '/'. $match[2] . '/get/' . $ref . '.' . $match[4];
            }
        } elseif ($host === 'gitlab.com' || $host === 'www.gitlab.com') {
            if (Preg::isMatch('{^https?://(?:www\.)?gitlab\.com/api/v[34]/projects/([^/]+)/repository/archive\.(zip|tar\.gz|tar\.bz2|tar)\?sha=.+$}i', $url, $match)) {
                // update Gitlab archives to the proper reference
                $url = 'https://gitlab.com/api/v4/projects/' . $match[1] . '/repository/archive.' . $match[2] . '?sha=' . $ref;
            }
        } elseif (in_array($host, $config->get('github-domains'), true)) {
            $url = Preg::replace('{(/repos/[^/]+/[^/]+/(zip|tar)ball)(?:/.+)?$}i', '$1/'.$ref, $url);
        } elseif (in_array($host, $config->get('gitlab-domains'), true)) {
            $url = Preg::replace('{(/api/v[34]/projects/[^/]+/repository/archive\.(?:zip|tar\.gz|tar\.bz2|tar)\?sha=).+$}i', '${1}'.$ref, $url);
        }

return $url;
    }

/**
     * @param  string $url
     * @return string
     */
    public static function getOrigin(Config $config, $url)
    {
        if (0 === strpos($url, 'file://')) {
            return $url;
        }

$origin = (string) parse_url($url, PHP_URL_HOST);
        if ($port = parse_url($url, PHP_URL_PORT)) {
            $origin .= ':'.$port;
        }

if (strpos($origin, '.github.com') === (strlen($origin) - 11)) {
            return 'github.com';
        }

if ($origin === 'repo.packagist.org') {
            return 'packagist.org';
        }

if ($origin === '') {
            $origin = $url;
        }

// Gitlab can be installed in a non-root context (i.e. gitlab.com/foo). When downloading archives the originUrl
        // is the host without the path, so we look for the registered gitlab-domains matching the host here
        if (
            is_array($config->get('gitlab-domains'))
            && false === strpos($origin, '/')
            && !in_array($origin, $config->get('gitlab-domains'))
        ) {
            foreach ($config->get('gitlab-domains') as $gitlabDomain) {
                if (0 === strpos($gitlabDomain, $origin)) {
                    return $gitlabDomain;
                }
            }
        }

return $origin;
    }

/**
     * @param  string $url
     * @return string
     */
    public static function sanitize($url)
    {
        // GitHub repository rename result in redirect locations containing the access_token as GET parameter
        // e.g. https://api.github.com/repositories/9999999999?access_token=github_token
        $url = Preg::replace('{([&?]access_token=)[^&]+}', '$1***', $url);

$url = Preg::replaceCallback('{^(?P<prefix>[a-z0-9]+://)?(?P<user>[^:/\s@]+):(?P<password>[^@\s/]+)@}i', function ($m) {
            // if the username looks like a long (12char+) hex string, or a modern github token (e.g. ghp_xxx) we obfuscate that
            if (Preg::isMatch('{^([a-f0-9]{12,}|gh[a-z]_[a-zA-Z0-9_]+)$}', $m['user'])) {
                return $m['prefix'].'***:***@';
            }

return $m['prefix'].$m['user'].':***@';
        }, $url);

return $url;
    }
}
<?php

namespace Composer;

use Composer\Config\ConfigSourceInterface;
use Composer\Downloader\TransportException;
use Composer\IO\IOInterface;
use Composer\Pcre\Preg;
use Composer\Util\Platform;
use Composer\Util\ProcessExecutor;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class Config
{
    const SOURCE_DEFAULT = 'default';
    const SOURCE_COMMAND = 'command';
    const SOURCE_UNKNOWN = 'unknown';

const RELATIVE_PATHS = 1;

/** @var array<string, mixed> */
    public static $defaultConfig = array(
        'process-timeout' => 300,
        'use-include-path' => false,
        'allow-plugins' => null, // null for BC for now, will become array() after July 2022
        'use-parent-dir' => 'prompt',
        'preferred-install' => 'dist',
        'notify-on-install' => true,
        'github-protocols' => array('https', 'ssh', 'git'),
        'gitlab-protocol' => null,
        'vendor-dir' => 'vendor',
        'bin-dir' => '{$vendor-dir}/bin',
        'cache-dir' => '{$home}/cache',
        'data-dir' => '{$home}',
        'cache-files-dir' => '{$cache-dir}/files',
        'cache-repo-dir' => '{$cache-dir}/repo',
        'cache-vcs-dir' => '{$cache-dir}/vcs',
        'cache-ttl' => 15552000, // 6 months
        'cache-files-ttl' => null, // fallback to cache-ttl
        'cache-files-maxsize' => '300MiB',
        'cache-read-only' => false,
        'bin-compat' => 'auto',
        'discard-changes' => false,
        'autoloader-suffix' => null,
        'sort-packages' => false,
        'optimize-autoloader' => false,
        'classmap-authoritative' => false,
        'apcu-autoloader' => false,
        'prepend-autoloader' => true,
        'github-domains' => array('github.com'),
        'bitbucket-expose-hostname' => true,
        'disable-tls' => false,
        'secure-http' => true,
        'secure-svn-domains' => array(),
        'cafile' => null,
        'capath' => null,
        'github-expose-hostname' => true,
        'gitlab-domains' => array('gitlab.com'),
        'store-auths' => 'prompt',
        'platform' => array(),
        'archive-format' => 'tar',
        'archive-dir' => '.',
        'htaccess-protect' => true,
        'use-github-api' => true,
        'lock' => true,
        'platform-check' => 'php-only',
        // valid keys without defaults (auth config stuff):
        // bitbucket-oauth
        // github-oauth
        // gitlab-oauth
        // gitlab-token
        // http-basic
        // bearer
    );

/** @var array<string, mixed> */
    public static $defaultRepositories = array(
        'packagist.org' => array(
            'type' => 'composer',
            'url' => 'https://repo.packagist.org',
        ),
    );

/** @var array<string, mixed> */
    private $config;
    /** @var ?string */
    private $baseDir;
    /** @var array<int|string, mixed> */
    private $repositories;
    /** @var ConfigSourceInterface */
    private $configSource;
    /** @var ConfigSourceInterface */
    private $authConfigSource;
    /** @var bool */
    private $useEnvironment;
    /** @var array<string, true> */
    private $warnedHosts = array();
    /** @var array<string, string> */
    private $sourceOfConfigValue = array();

/**
     * @param bool   $useEnvironment Use COMPOSER_ environment variables to replace config settings
     * @param string $baseDir        Optional base directory of the config
     */
    public function __construct($useEnvironment = true, $baseDir = null)
    {
        // load defaults
        $this->config = static::$defaultConfig;

// TODO after July 2022 remove this and update the default value above in self::$defaultConfig + remove note from 06-config.md
        if (strtotime('2022-07-01') < time()) {
            $this->config['allow-plugins'] = array();
        }

$this->repositories = static::$defaultRepositories;
        $this->useEnvironment = (bool) $useEnvironment;
        $this->baseDir = $baseDir;

foreach ($this->config as $configKey => $configValue) {
            $this->setSourceOfConfigValue($configValue, $configKey, self::SOURCE_DEFAULT);
        }

foreach ($this->repositories as $configKey => $configValue) {
            $this->setSourceOfConfigValue($configValue, 'repositories.' . $configKey, self::SOURCE_DEFAULT);
        }
    }

/**
     * @return void
     */
    public function setConfigSource(ConfigSourceInterface $source)
    {
        $this->configSource = $source;
    }

/**
     * @return ConfigSourceInterface
     */
    public function getConfigSource()
    {
        return $this->configSource;
    }

/**
     * @return void
     */
    public function setAuthConfigSource(ConfigSourceInterface $source)
    {
        $this->authConfigSource = $source;
    }

/**
     * @return ConfigSourceInterface
     */
    public function getAuthConfigSource()
    {
        return $this->authConfigSource;
    }

/**
     * Merges new config values with the existing ones (overriding)
     *
     * @param array{config?: array<string, mixed>, repositories?: array<mixed>} $config
     * @param string $source
     *
     * @return void
     */
    public function merge($config, $source = self::SOURCE_UNKNOWN)
    {
        // override defaults with given config
        if (!empty($config['config']) && is_array($config['config'])) {
            foreach ($config['config'] as $key => $val) {
                if (in_array($key, array('bitbucket-oauth', 'github-oauth', 'gitlab-oauth', 'gitlab-token', 'http-basic', 'bearer'), true) && isset($this->config[$key])) {
                    $this->config[$key] = array_merge($this->config[$key], $val);
                    $this->setSourceOfConfigValue($val, $key, $source);
                } elseif (in_array($key, array('allow-plugins'), true) && isset($this->config[$key]) && is_array($this->config[$key])) {
                    // merging $val first to get the local config on top of the global one, then appending the global config,
                    // then merging local one again to make sure the values from local win over global ones for keys present in both
                    $this->config[$key] = array_merge($val, $this->config[$key], $val);
                    $this->setSourceOfConfigValue($val, $key, $source);
                } elseif (in_array($key, array('gitlab-domains', 'github-domains'), true) && isset($this->config[$key])) {
                    $this->config[$key] = array_unique(array_merge($this->config[$key], $val));
                    $this->setSourceOfConfigValue($val, $key, $source);
                } elseif ('preferred-install' === $key && isset($this->config[$key])) {
                    if (is_array($val) || is_array($this->config[$key])) {
                        if (is_string($val)) {
                            $val = array('*' => $val);
                        }
                        if (is_string($this->config[$key])) {
                            $this->config[$key] = array('*' => $this->config[$key]);
                            $this->sourceOfConfigValue[$key . '*'] = $source;
                        }
                        $this->config[$key] = array_merge($this->config[$key], $val);
                        $this->setSourceOfConfigValue($val, $key, $source);
                        // the full match pattern needs to be last
                        if (isset($this->config[$key]['*'])) {
                            $wildcard = $this->config[$key]['*'];
                            unset($this->config[$key]['*']);
                            $this->config[$key]['*'] = $wildcard;
                        }
                    } else {
                        $this->config[$key] = $val;
                        $this->setSourceOfConfigValue($val, $key, $source);
                    }
                } else {
                    $this->config[$key] = $val;
                    $this->setSourceOfConfigValue($val, $key, $source);
                }
            }
        }

if (!empty($config['repositories']) && is_array($config['repositories'])) {
            $this->repositories = array_reverse($this->repositories, true);
            $newRepos = array_reverse($config['repositories'], true);
            foreach ($newRepos as $name => $repository) {
                // disable a repository by name
                if (false === $repository) {
                    $this->disableRepoByName((string) $name);
                    continue;
                }

// disable a repository with an anonymous {"name": false} repo
                if (is_array($repository) && 1 === count($repository) && false === current($repository)) {
                    $this->disableRepoByName((string) key($repository));
                    continue;
                }

// auto-deactivate the default packagist.org repo if it gets redefined
                if (isset($repository['type'], $repository['url']) && $repository['type'] === 'composer' && Preg::isMatch('{^https?://(?:[a-z0-9-.]+\.)?packagist.org(/|$)}', $repository['url'])) {
                    $this->disableRepoByName('packagist.org');
                }

// store repo
                if (is_int($name)) {
                    $this->repositories[] = $repository;
                    $this->setSourceOfConfigValue($repository, 'repositories.' . array_search($repository, $this->repositories, true), $source);
                } else {
                    if ($name === 'packagist') { // BC support for default "packagist" named repo
                        $this->repositories[$name . '.org'] = $repository;
                        $this->setSourceOfConfigValue($repository, 'repositories.' . $name . '.org', $source);
                    } else {
                        $this->repositories[$name] = $repository;
                        $this->setSourceOfConfigValue($repository, 'repositories.' . $name, $source);
                    }
                }
            }
            $this->repositories = array_reverse($this->repositories, true);
        }
    }

/**
     * @return array<int|string, mixed>
     */
    public function getRepositories()
    {
        return $this->repositories;
    }

/**
     * Returns a setting
     *
     * @param  string            $key
     * @param  int               $flags Options (see class constants)
     * @throws \RuntimeException
     *
     * @return mixed
     */
    public function get($key, $flags = 0)
    {
        switch ($key) {
            // strings/paths with env var and {$refs} support
            case 'vendor-dir':
            case 'bin-dir':
            case 'process-timeout':
            case 'data-dir':
            case 'cache-dir':
            case 'cache-files-dir':
            case 'cache-repo-dir':
            case 'cache-vcs-dir':
            case 'cafile':
            case 'capath':
                // convert foo-bar to COMPOSER_FOO_BAR and check if it exists since it overrides the local config
                $env = 'COMPOSER_' . strtoupper(strtr($key, '-', '_'));

$val = $this->getComposerEnv($env);
                if ($val !== false) {
                    $this->setSourceOfConfigValue($val, $key, $env);
                }

$val = rtrim((string) $this->process(false !== $val ? $val : $this->config[$key], $flags), '/\\');
                $val = Platform::expandPath($val);

if (substr($key, -4) !== '-dir') {
                    return $val;
                }

return (($flags & self::RELATIVE_PATHS) == self::RELATIVE_PATHS) ? $val : $this->realpath($val);

// booleans with env var support
            case 'cache-read-only':
            case 'htaccess-protect':
                // convert foo-bar to COMPOSER_FOO_BAR and check if it exists since it overrides the local config
                $env = 'COMPOSER_' . strtoupper(strtr($key, '-', '_'));

$val = $this->getComposerEnv($env);
                if (false === $val) {
                    $val = $this->config[$key];
                } else {
                    $this->setSourceOfConfigValue($val, $key, $env);
                }

return $val !== 'false' && (bool) $val;

// booleans without env var support
            case 'disable-tls':
            case 'secure-http':
            case 'use-github-api':
            case 'lock':
                // special case for secure-http
                if ($key === 'secure-http' && $this->get('disable-tls') === true) {
                    return false;
                }

return $this->config[$key] !== 'false' && (bool) $this->config[$key];

// ints without env var support
            case 'cache-ttl':
                return (int) $this->config[$key];

// numbers with kb/mb/gb support, without env var support
            case 'cache-files-maxsize':
                if (!Preg::isMatch('/^\s*([0-9.]+)\s*(?:([kmg])(?:i?b)?)?\s*$/i', $this->config[$key], $matches)) {
                    throw new \RuntimeException(
                        "Could not parse the value of '$key': {$this->config[$key]}"
                    );
                }
                $size = $matches[1];
                if (isset($matches[2])) {
                    switch (strtolower($matches[2])) {
                        case 'g':
                            $size *= 1024;
                            // intentional fallthrough
                            // no break
                        case 'm':
                            $size *= 1024;
                            // intentional fallthrough
                            // no break
                        case 'k':
                            $size *= 1024;
                            break;
                    }
                }

return $size;

// special cases below
            case 'cache-files-ttl':
                if (isset($this->config[$key])) {
                    return (int) $this->config[$key];
                }

return (int) $this->config['cache-ttl'];

case 'home':
                $val = Preg::replace('#^(\$HOME|~)(/|$)#', rtrim(Platform::getEnv('HOME') ?: Platform::getEnv('USERPROFILE'), '/\\') . '/', $this->config[$key]);

return rtrim($this->process($val, $flags), '/\\');

case 'bin-compat':
                $value = $this->getComposerEnv('COMPOSER_BIN_COMPAT') ?: $this->config[$key];

if (!in_array($value, array('auto', 'full', 'proxy', 'symlink'))) {
                    throw new \RuntimeException(
                        "Invalid value for 'bin-compat': {$value}. Expected auto, full or proxy"
                    );
                }

if ($value === 'symlink') {
                    trigger_error('config.bin-compat "symlink" is deprecated since Composer 2.2, use auto, full (for Windows compatibility) or proxy instead.', E_USER_DEPRECATED);
                }

return $value;

case 'discard-changes':
                if ($env = $this->getComposerEnv('COMPOSER_DISCARD_CHANGES')) {
                    if (!in_array($env, array('stash', 'true', 'false', '1', '0'), true)) {
                        throw new \RuntimeException(
                            "Invalid value for COMPOSER_DISCARD_CHANGES: {$env}. Expected 1, 0, true, false or stash"
                        );
                    }
                    if ('stash' === $env) {
                        return 'stash';
                    }

// convert string value to bool
                    return $env !== 'false' && (bool) $env;
                }

if (!in_array($this->config[$key], array(true, false, 'stash'), true)) {
                    throw new \RuntimeException(
                        "Invalid value for 'discard-changes': {$this->config[$key]}. Expected true, false or stash"
                    );
                }

return $this->config[$key];

case 'github-protocols':
                $protos = $this->config['github-protocols'];
                if ($this->config['secure-http'] && false !== ($index = array_search('git', $protos))) {
                    unset($protos[$index]);
                }
                if (reset($protos) === 'http') {
                    throw new \RuntimeException('The http protocol for github is not available anymore, update your config\'s github-protocols to use "https", "git" or "ssh"');
                }

return $protos;

default:
                if (!isset($this->config[$key])) {
                    return null;
                }

return $this->process($this->config[$key], $flags);
        }
    }

/**
     * @param int $flags
     *
     * @return array<string, mixed[]>
     */
    public function all($flags = 0)
    {
        $all = array(
            'repositories' => $this->getRepositories(),
        );
        foreach (array_keys($this->config) as $key) {
            $all['config'][$key] = $this->get($key, $flags);
        }

return $all;
    }

/**
     * @param string $key
     * @return string
     */
    public function getSourceOfValue($key)
    {
        $this->get($key);

return isset($this->sourceOfConfigValue[$key]) ? $this->sourceOfConfigValue[$key] : self::SOURCE_UNKNOWN;
    }

/**
     * @param mixed  $configValue
     * @param string $path
     * @param string $source
     *
     * @return void
     */
    private function setSourceOfConfigValue($configValue, $path, $source)
    {
        $this->sourceOfConfigValue[$path] = $source;

if (is_array($configValue)) {
            foreach ($configValue as $key => $value) {
                $this->setSourceOfConfigValue($value, $path . '.' . $key, $source);
            }
        }
    }

/**
     * @return array<string, mixed[]>
     */
    public function raw()
    {
        return array(
            'repositories' => $this->getRepositories(),
            'config' => $this->config,
        );
    }

/**
     * Checks whether a setting exists
     *
     * @param  string $key
     * @return bool
     */
    public function has($key)
    {
        return array_key_exists($key, $this->config);
    }

/**
     * Replaces {$refs} inside a config string
     *
     * @param  string|int|null $value a config string that can contain {$refs-to-other-config}
     * @param  int             $flags Options (see class constants)
     *
     * @return string|int|null
     */
    private function process($value, $flags)
    {
        $config = $this;

if (!is_string($value)) {
            return $value;
        }

return Preg::replaceCallback('#\{\$(.+)\}#', function ($match) use ($config, $flags) {
            return $config->get($match[1], $flags);
        }, $value);
    }

/**
     * Turns relative paths in absolute paths without realpath()
     *
     * Since the dirs might not exist yet we can not call realpath or it will fail.
     *
     * @param  string $path
     * @return string
     */
    private function realpath($path)
    {
        if (Preg::isMatch('{^(?:/|[a-z]:|[a-z0-9.]+://)}i', $path)) {
            return $path;
        }

return $this->baseDir ? $this->baseDir . '/' . $path : $path;
    }

/**
     * Reads the value of a Composer environment variable
     *
     * This should be used to read COMPOSER_ environment variables
     * that overload config values.
     *
     * @param  string      $var
     * @return string|bool
     */
    private function getComposerEnv($var)
    {
        if ($this->useEnvironment) {
            return Platform::getEnv($var);
        }

return false;
    }

/**
     * @param string $name
     *
     * @return void
     */
    private function disableRepoByName($name)
    {
        if (isset($this->repositories[$name])) {
            unset($this->repositories[$name]);
        } elseif ($name === 'packagist') { // BC support for default "packagist" named repo
            unset($this->repositories['packagist.org']);
        }
    }

/**
     * Validates that the passed URL is allowed to be used by current config, or throws an exception.
     *
     * @param string      $url
     * @param IOInterface $io
     *
     * @return void
     */
    public function prohibitUrlByConfig($url, IOInterface $io = null)
    {
        // Return right away if the URL is malformed or custom (see issue #5173)
        if (false === filter_var($url, FILTER_VALIDATE_URL)) {
            return;
        }

// Extract scheme and throw exception on known insecure protocols
        $scheme = parse_url($url, PHP_URL_SCHEME);
        $hostname = parse_url($url, PHP_URL_HOST);
        if (in_array($scheme, array('http', 'git', 'ftp', 'svn'))) {
            if ($this->get('secure-http')) {
                if ($scheme === 'svn') {
                    if (in_array($hostname, $this->get('secure-svn-domains'), true)) {
                        return;
                    }

throw new TransportException("Your configuration does not allow connections to $url. See https://getcomposer.org/doc/06-config.md#secure-svn-domains for details.");
                }

throw new TransportException("Your configuration does not allow connections to $url. See https://getcomposer.org/doc/06-config.md#secure-http for details.");
            }
            if ($io) {
                $host = parse_url($url, PHP_URL_HOST);
                if (is_string($host)) {
                    if (!isset($this->warnedHosts[$host])) {
                        $io->writeError("<warning>Warning: Accessing $host over $scheme which is an insecure protocol.</warning>");
                    }
                    $this->warnedHosts[$host] = true;
                }
            }
        }
    }

/**
     * Used by long-running custom scripts in composer.json
     *
     * "scripts": {
     *   "watch": [
     *     "Composer\\Config::disableProcessTimeout",
     *     "vendor/bin/long-running-script --watch"
     *   ]
     * }
     *
     * @return void
     */
    public static function disableProcessTimeout()
    {
        // Override global timeout set earlier by environment or config
        ProcessExecutor::setTimeout(0);
    }
}
<?php

namespace Composer\Script;

use Composer\Composer;
use Composer\IO\IOInterface;
use Composer\EventDispatcher\Event as BaseEvent;

/**
 * The script event class
 *
 * @author François Pluchino <francois.pluchino@opendisplay.com>
 * @author Nils Adermann <naderman@naderman.de>
 */
class Event extends BaseEvent
{
    /**
     * @var Composer The composer instance
     */
    private $composer;

/**
     * @var IOInterface The IO instance
     */
    private $io;

/**
     * @var bool Dev mode flag
     */
    private $devMode;

/**
     * @var BaseEvent
     */
    private $originatingEvent;

/**
     * Constructor.
     *
     * @param string $name The event name
     * @param Composer $composer The composer object
     * @param IOInterface $io The IOInterface object
     * @param bool $devMode Whether or not we are in dev mode
     * @param array<string|int|float|bool|null> $args Arguments passed by the user
     * @param mixed[] $flags Optional flags to pass data not as argument
     */
    public function __construct($name, Composer $composer, IOInterface $io, $devMode = false, array $args = array(), array $flags = array())
    {
        parent::__construct($name, $args, $flags);
        $this->composer = $composer;
        $this->io = $io;
        $this->devMode = $devMode;
    }

/**
     * Returns the composer instance.
     *
     * @return Composer
     */
    public function getComposer()
    {
        return $this->composer;
    }

/**
     * Returns the IO instance.
     *
     * @return IOInterface
     */
    public function getIO()
    {
        return $this->io;
    }

/**
     * Return the dev mode flag
     *
     * @return bool
     */
    public function isDevMode()
    {
        return $this->devMode;
    }

/**
     * Set the originating event.
     *
     * @return ?BaseEvent
     */
    public function getOriginatingEvent()
    {
        return $this->originatingEvent;
    }

/**
     * Set the originating event.
     *
     * @param  BaseEvent $event
     * @return $this
     */
    public function setOriginatingEvent(BaseEvent $event)
    {
        $this->originatingEvent = $this->calculateOriginatingEvent($event);

return $this;
    }

/**
     * Returns the upper-most event in chain.
     *
     * @param  BaseEvent $event
     * @return BaseEvent
     */
    private function calculateOriginatingEvent(BaseEvent $event)
    {
        if ($event instanceof Event && $event->getOriginatingEvent()) {
            return $this->calculateOriginatingEvent($event->getOriginatingEvent());
        }

return $event;
    }
}
<?php

namespace Composer\Script;

/**
 * The Script Events.
 *
 * @author François Pluchino <francois.pluchino@opendisplay.com>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class ScriptEvents
{
    /**
     * The PRE_INSTALL_CMD event occurs before the install command is executed.
     *
     * The event listener method receives a Composer\Script\Event instance.
     *
     * @var string
     */
    const PRE_INSTALL_CMD = 'pre-install-cmd';

/**
     * The POST_INSTALL_CMD event occurs after the install command is executed.
     *
     * The event listener method receives a Composer\Script\Event instance.
     *
     * @var string
     */
    const POST_INSTALL_CMD = 'post-install-cmd';

/**
     * The PRE_UPDATE_CMD event occurs before the update command is executed.
     *
     * The event listener method receives a Composer\Script\Event instance.
     *
     * @var string
     */
    const PRE_UPDATE_CMD = 'pre-update-cmd';

/**
     * The POST_UPDATE_CMD event occurs after the update command is executed.
     *
     * The event listener method receives a Composer\Script\Event instance.
     *
     * @var string
     */
    const POST_UPDATE_CMD = 'post-update-cmd';

/**
     * The PRE_STATUS_CMD event occurs before the status command is executed.
     *
     * The event listener method receives a Composer\Script\Event instance.
     *
     * @var string
     */
    const PRE_STATUS_CMD = 'pre-status-cmd';

/**
     * The POST_STATUS_CMD event occurs after the status command is executed.
     *
     * The event listener method receives a Composer\Script\Event instance.
     *
     * @var string
     */
    const POST_STATUS_CMD = 'post-status-cmd';

/**
     * The PRE_AUTOLOAD_DUMP event occurs before the autoload file is generated.
     *
     * The event listener method receives a Composer\Script\Event instance.
     *
     * @var string
     */
    const PRE_AUTOLOAD_DUMP = 'pre-autoload-dump';

/**
     * The POST_AUTOLOAD_DUMP event occurs after the autoload file has been generated.
     *
     * The event listener method receives a Composer\Script\Event instance.
     *
     * @var string
     */
    const POST_AUTOLOAD_DUMP = 'post-autoload-dump';

/**
     * The POST_ROOT_PACKAGE_INSTALL event occurs after the root package has been installed.
     *
     * The event listener method receives a Composer\Script\Event instance.
     *
     * @var string
     */
    const POST_ROOT_PACKAGE_INSTALL = 'post-root-package-install';

/**
     * The POST_CREATE_PROJECT event occurs after the create-project command has been executed.
     * Note: Event occurs after POST_INSTALL_CMD
     *
     * The event listener method receives a Composer\Script\Event instance.
     *
     * @var string
     */
    const POST_CREATE_PROJECT_CMD = 'post-create-project-cmd';

/**
     * The PRE_ARCHIVE_CMD event occurs before the update command is executed.
     *
     * The event listener method receives a Composer\Script\Event instance.
     *
     * @var string
     */
    const PRE_ARCHIVE_CMD = 'pre-archive-cmd';

/**
     * The POST_ARCHIVE_CMD event occurs after the status command is executed.
     *
     * The event listener method receives a Composer\Script\Event instance.
     *
     * @var string
     */
    const POST_ARCHIVE_CMD = 'post-archive-cmd';
}
<?php

namespace Composer;

use Composer\Json\JsonFile;
use Composer\CaBundle\CaBundle;
use Composer\Pcre\Preg;
use Symfony\Component\Finder\Finder;
use Symfony\Component\Process\Process;
use Seld\PharUtils\Timestamps;
use Seld\PharUtils\Linter;

/**
 * The Compiler class compiles composer into a phar
 *
 * @author Fabien Potencier <fabien@symfony.com>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class Compiler
{
    /** @var string */
    private $version;
    /** @var string */
    private $branchAliasVersion = '';
    /** @var \DateTime */
    private $versionDate;

/**
     * Compiles composer into a single phar file
     *
     * @param string $pharFile The full path to the file to create
     *
     * @return void
     *
     * @throws \RuntimeException
     */
    public function compile($pharFile = 'composer.phar')
    {
        if (file_exists($pharFile)) {
            unlink($pharFile);
        }

// TODO in v2.3 always call with an array
        if (method_exists('Symfony\Component\Process\Process', 'fromShellCommandline')) {
            $process = new Process(array('git', 'log', '--pretty="%H"', '-n1', 'HEAD'), __DIR__);
        } else {
            // @phpstan-ignore-next-line
            $process = new Process('git log --pretty="%H" -n1 HEAD', __DIR__);
        }
        if ($process->run() != 0) {
            throw new \RuntimeException('Can\'t run git log. You must ensure to run compile from composer git repository clone and that git binary is available.');
        }
        $this->version = trim($process->getOutput());

// TODO in v2.3 always call with an array
        if (method_exists('Symfony\Component\Process\Process', 'fromShellCommandline')) {
            $process = new Process(array('git', 'log', '-n1', '--pretty=%ci', 'HEAD'), __DIR__);
        } else {
            // @phpstan-ignore-next-line
            $process = new Process('git log -n1 --pretty=%ci HEAD', __DIR__);
        }
        if ($process->run() != 0) {
            throw new \RuntimeException('Can\'t run git log. You must ensure to run compile from composer git repository clone and that git binary is available.');
        }

$this->versionDate = new \DateTime(trim($process->getOutput()));
        $this->versionDate->setTimezone(new \DateTimeZone('UTC'));

// TODO in v2.3 always call with an array
        if (method_exists('Symfony\Component\Process\Process', 'fromShellCommandline')) {
            $process = new Process(array('git', 'describe', '--tags', '--exact-match', 'HEAD'), __DIR__);
        } else {
            // @phpstan-ignore-next-line
            $process = new Process('git describe --tags --exact-match HEAD');
        }
        if ($process->run() == 0) {
            $this->version = trim($process->getOutput());
        } else {
            // get branch-alias defined in composer.json for dev-main (if any)
            $localConfig = __DIR__.'/../../composer.json';
            $file = new JsonFile($localConfig);
            $localConfig = $file->read();
            if (isset($localConfig['extra']['branch-alias']['dev-main'])) {
                $this->branchAliasVersion = $localConfig['extra']['branch-alias']['dev-main'];
            }
        }

$phar = new \Phar($pharFile, 0, 'composer.phar');
        $phar->setSignatureAlgorithm(\Phar::SHA512);

$phar->startBuffering();

$finderSort = function ($a, $b) {
            return strcmp(strtr($a->getRealPath(), '\\', '/'), strtr($b->getRealPath(), '\\', '/'));
        };

// Add Composer sources
        $finder = new Finder();
        $finder->files()
            ->ignoreVCS(true)
            ->name('*.php')
            ->notName('Compiler.php')
            ->notName('ClassLoader.php')
            ->notName('InstalledVersions.php')
            ->in(__DIR__.'/..')
            ->sort($finderSort)
        ;
        foreach ($finder as $file) {
            $this->addFile($phar, $file);
        }
        // Add runtime utilities separately to make sure they retains the docblocks as these will get copied into projects
        $this->addFile($phar, new \SplFileInfo(__DIR__ . '/Autoload/ClassLoader.php'), false);
        $this->addFile($phar, new \SplFileInfo(__DIR__ . '/InstalledVersions.php'), false);

// Add Composer resources
        $finder = new Finder();
        $finder->files()
            ->in(__DIR__.'/../../res')
            ->sort($finderSort)
        ;
        foreach ($finder as $file) {
            $this->addFile($phar, $file, false);
        }

// Add vendor files
        $finder = new Finder();
        $finder->files()
            ->ignoreVCS(true)
            ->notPath('/\/(composer\.(json|lock)|[A-Z]+\.md|\.gitignore|appveyor.yml|phpunit\.xml\.dist|phpstan\.neon\.dist|phpstan-config\.neon)$/')
            ->notPath('/bin\/(jsonlint|validate-json|simple-phpunit)(\.bat)?$/')
            ->notPath('symfony/debug/Resources/ext/')
            ->notPath('justinrainbow/json-schema/demo/')
            ->notPath('justinrainbow/json-schema/dist/')
            ->notPath('composer/installed.json')
            ->notPath('composer/LICENSE')
            ->exclude('Tests')
            ->exclude('tests')
            ->exclude('docs')
            ->in(__DIR__.'/../../vendor/')
            ->sort($finderSort)
        ;

$extraFiles = array(
            realpath(__DIR__ . '/../../vendor/composer/spdx-licenses/res/spdx-exceptions.json'),
            realpath(__DIR__ . '/../../vendor/composer/spdx-licenses/res/spdx-licenses.json'),
            realpath(CaBundle::getBundledCaBundlePath()),
            realpath(__DIR__ . '/../../vendor/symfony/console/Resources/bin/hiddeninput.exe'),
            realpath(__DIR__ . '/../../vendor/symfony/polyfill-mbstring/Resources/mb_convert_variables.php8'),
        );
        $unexpectedFiles = array();

foreach ($finder as $file) {
            if (in_array(realpath($file), $extraFiles, true)) {
                unset($extraFiles[array_search(realpath($file), $extraFiles, true)]);
            } elseif (!Preg::isMatch('{([/\\\\]LICENSE|\.php)$}', $file)) {
                $unexpectedFiles[] = (string) $file;
            }

if (Preg::isMatch('{\.php[\d.]*$}', $file)) {
                $this->addFile($phar, $file);
            } else {
                $this->addFile($phar, $file, false);
            }
        }

if ($extraFiles) {
            throw new \RuntimeException('These files were expected but not added to the phar, they might be excluded or gone from the source package:'.PHP_EOL.implode(PHP_EOL, $extraFiles));
        }
        if ($unexpectedFiles) {
            throw new \RuntimeException('These files were unexpectedly added to the phar, make sure they are excluded or listed in $extraFiles:'.PHP_EOL.implode(PHP_EOL, $unexpectedFiles));
        }

// Add bin/composer
        $this->addComposerBin($phar);

// Stubs
        $phar->setStub($this->getStub());

$phar->stopBuffering();

// disabled for interoperability with systems without gzip ext
        // $phar->compressFiles(\Phar::GZ);

$this->addFile($phar, new \SplFileInfo(__DIR__.'/../../LICENSE'), false);

unset($phar);

// re-sign the phar with reproducible timestamp / signature
        $util = new Timestamps($pharFile);
        $util->updateTimestamps($this->versionDate);
        $util->save($pharFile, \Phar::SHA512);

Linter::lint($pharFile);
    }

/**
     * @param  \SplFileInfo $file
     * @return string
     */
    private function getRelativeFilePath($file)
    {
        $realPath = $file->getRealPath();
        $pathPrefix = dirname(dirname(__DIR__)).DIRECTORY_SEPARATOR;

$pos = strpos($realPath, $pathPrefix);
        $relativePath = ($pos !== false) ? substr_replace($realPath, '', $pos, strlen($pathPrefix)) : $realPath;

return strtr($relativePath, '\\', '/');
    }

/**
     * @param bool $strip
     *
     * @return void
     */
    private function addFile(\Phar $phar, \SplFileInfo $file, $strip = true)
    {
        $path = $this->getRelativeFilePath($file);
        $content = file_get_contents($file);
        if ($strip) {
            $content = $this->stripWhitespace($content);
        } elseif ('LICENSE' === basename($file)) {
            $content = "\n".$content."\n";
        }

if ($path === 'src/Composer/Composer.php') {
            $content = strtr(
                $content,
                array(
                    '@package_version@' => $this->version,
                    '@package_branch_alias_version@' => $this->branchAliasVersion,
                    '@release_date@' => $this->versionDate->format('Y-m-d H:i:s'),
                )
            );
            $content = Preg::replace('{SOURCE_VERSION = \'[^\']+\';}', 'SOURCE_VERSION = \'\';', $content);
        }

$phar->addFromString($path, $content);
    }

/**
     * @return void
     */
    private function addComposerBin(\Phar $phar)
    {
        $content = file_get_contents(__DIR__.'/../../bin/composer');
        $content = Preg::replace('{^#!/usr/bin/env php\s*}', '', $content);
        $phar->addFromString('bin/composer', $content);
    }

/**
     * Removes whitespace from a PHP source string while preserving line numbers.
     *
     * @param  string $source A PHP string
     * @return string The PHP string with the whitespace removed
     */
    private function stripWhitespace($source)
    {
        if (!function_exists('token_get_all')) {
            return $source;
        }

$output = '';
        foreach (token_get_all($source) as $token) {
            if (is_string($token)) {
                $output .= $token;
            } elseif (in_array($token[0], array(T_COMMENT, T_DOC_COMMENT))) {
                $output .= str_repeat("\n", substr_count($token[1], "\n"));
            } elseif (T_WHITESPACE === $token[0]) {
                // reduce wide spaces
                $whitespace = Preg::replace('{[ \t]+}', ' ', $token[1]);
                // normalize newlines to \n
                $whitespace = Preg::replace('{(?:\r\n|\r|\n)}', "\n", $whitespace);
                // trim leading spaces
                $whitespace = Preg::replace('{\n +}', "\n", $whitespace);
                $output .= $whitespace;
            } else {
                $output .= $token[1];
            }
        }

return $output;
    }

/**
     * @return string
     */
    private function getStub()
    {
        $stub = <<<'EOF'
#!/usr/bin/env php
<?php
/*
 * This file is part of Composer.
 *
 * (c) Nils Adermann <naderman@naderman.de>
 *     Jordi Boggiano <j.boggiano@seld.be>
 *
 * For the full copyright and license information, please view
 * the license that is located at the bottom of this file.
 */

// Avoid APC causing random fatal errors per https://github.com/composer/composer/issues/264
if (extension_loaded('apc') && filter_var(ini_get('apc.enable_cli'), FILTER_VALIDATE_BOOLEAN) && filter_var(ini_get('apc.cache_by_default'), FILTER_VALIDATE_BOOLEAN)) {
    if (version_compare(phpversion('apc'), '3.0.12', '>=')) {
        ini_set('apc.cache_by_default', 0);
    } else {
        fwrite(STDERR, 'Warning: APC <= 3.0.12 may cause fatal errors when running composer commands.'.PHP_EOL);
        fwrite(STDERR, 'Update APC, or set apc.enable_cli or apc.cache_by_default to 0 in your php.ini.'.PHP_EOL);
    }
}

if (!class_exists('Phar')) {
    echo 'PHP\'s phar extension is missing. Composer requires it to run. Enable the extension or recompile php without --disable-phar then try again.' . PHP_EOL;
    exit(1);
}

Phar::mapPhar('composer.phar');

EOF;

// add warning once the phar is older than 60 days
        if (Preg::isMatch('{^[a-f0-9]+$}', $this->version)) {
            $warningTime = ((int) $this->versionDate->format('U')) + 60 * 86400;
            $stub .= "define('COMPOSER_DEV_WARNING_TIME', $warningTime);\n";
        }

return $stub . <<<'EOF'
require 'phar://composer.phar/bin/composer';

__HALT_COMPILER();
EOF;
    }
}
<?php

namespace Composer\Exception;

/**
 * Specific exception for Composer\Util\HttpDownloader creation.
 *
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class NoSslException extends \RuntimeException
{
}
<?php

namespace Composer\Exception;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class IrrecoverableDownloadException extends \RuntimeException
{
}
<?php

namespace Composer;

use Composer\Autoload\ClassLoader;
use Composer\Semver\VersionParser;

/**
 * This class is copied in every Composer installed project and available to all
 *
 * See also https://getcomposer.org/doc/07-runtime.md#installed-versions
 *
 * To require its presence, you can require `composer-runtime-api ^2.0`
 */
class InstalledVersions
{
    /**
     * @var mixed[]|null
     * @psalm-var array{root: array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string, type: string}, versions: array<string, array{dev_requirement: bool, pretty_version?: string, version?: string, aliases?: string[], reference?: string, replaced?: string[], provided?: string[], install_path?: string, type?: string}>}|array{}|null
     */
    private static $installed;

/**
     * @var bool|null
     */
    private static $canGetVendors;

/**
     * @var array[]
     * @psalm-var array<string, array{root: array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string, type: string}, versions: array<string, array{dev_requirement: bool, pretty_version?: string, version?: string, aliases?: string[], reference?: string, replaced?: string[], provided?: string[], install_path?: string, type?: string}>}>
     */
    private static $installedByVendor = array();

/**
     * Returns a list of all package names which are present, either by being installed, replaced or provided
     *
     * @return string[]
     * @psalm-return list<string>
     */
    public static function getInstalledPackages()
    {
        $packages = array();
        foreach (self::getInstalled() as $installed) {
            $packages[] = array_keys($installed['versions']);
        }

if (1 === \count($packages)) {
            return $packages[0];
        }

return array_keys(array_flip(\call_user_func_array('array_merge', $packages)));
    }

/**
     * Returns a list of all package names with a specific type e.g. 'library'
     *
     * @param  string   $type
     * @return string[]
     * @psalm-return list<string>
     */
    public static function getInstalledPackagesByType($type)
    {
        $packagesByType = array();

foreach (self::getInstalled() as $installed) {
            foreach ($installed['versions'] as $name => $package) {
                if (isset($package['type']) && $package['type'] === $type) {
                    $packagesByType[] = $name;
                }
            }
        }

return $packagesByType;
    }

/**
     * Checks whether the given package is installed
     *
     * This also returns true if the package name is provided or replaced by another package
     *
     * @param  string $packageName
     * @param  bool   $includeDevRequirements
     * @return bool
     */
    public static function isInstalled($packageName, $includeDevRequirements = true)
    {
        foreach (self::getInstalled() as $installed) {
            if (isset($installed['versions'][$packageName])) {
                return $includeDevRequirements || empty($installed['versions'][$packageName]['dev_requirement']);
            }
        }

return false;
    }

/**
     * Checks whether the given package satisfies a version constraint
     *
     * e.g. If you want to know whether version 2.3+ of package foo/bar is installed, you would call:
     *
     *   Composer\InstalledVersions::satisfies(new VersionParser, 'foo/bar', '^2.3')
     *
     * @param  VersionParser $parser      Install composer/semver to have access to this class and functionality
     * @param  string        $packageName
     * @param  string|null   $constraint  A version constraint to check for, if you pass one you have to make sure composer/semver is required by your package
     * @return bool
     */
    public static function satisfies(VersionParser $parser, $packageName, $constraint)
    {
        $constraint = $parser->parseConstraints($constraint);
        $provided = $parser->parseConstraints(self::getVersionRanges($packageName));

return $provided->matches($constraint);
    }

/**
     * Returns a version constraint representing all the range(s) which are installed for a given package
     *
     * It is easier to use this via isInstalled() with the $constraint argument if you need to check
     * whether a given version of a package is installed, and not just whether it exists
     *
     * @param  string $packageName
     * @return string Version constraint usable with composer/semver
     */
    public static function getVersionRanges($packageName)
    {
        foreach (self::getInstalled() as $installed) {
            if (!isset($installed['versions'][$packageName])) {
                continue;
            }

$ranges = array();
            if (isset($installed['versions'][$packageName]['pretty_version'])) {
                $ranges[] = $installed['versions'][$packageName]['pretty_version'];
            }
            if (array_key_exists('aliases', $installed['versions'][$packageName])) {
                $ranges = array_merge($ranges, $installed['versions'][$packageName]['aliases']);
            }
            if (array_key_exists('replaced', $installed['versions'][$packageName])) {
                $ranges = array_merge($ranges, $installed['versions'][$packageName]['replaced']);
            }
            if (array_key_exists('provided', $installed['versions'][$packageName])) {
                $ranges = array_merge($ranges, $installed['versions'][$packageName]['provided']);
            }

return implode(' || ', $ranges);
        }

throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
    }

/**
     * @param  string      $packageName
     * @return string|null If the package is being replaced or provided but is not really installed, null will be returned as version, use satisfies or getVersionRanges if you need to know if a given version is present
     */
    public static function getVersion($packageName)
    {
        foreach (self::getInstalled() as $installed) {
            if (!isset($installed['versions'][$packageName])) {
                continue;
            }

if (!isset($installed['versions'][$packageName]['version'])) {
                return null;
            }

return $installed['versions'][$packageName]['version'];
        }

throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
    }

/**
     * @param  string      $packageName
     * @return string|null If the package is being replaced or provided but is not really installed, null will be returned as version, use satisfies or getVersionRanges if you need to know if a given version is present
     */
    public static function getPrettyVersion($packageName)
    {
        foreach (self::getInstalled() as $installed) {
            if (!isset($installed['versions'][$packageName])) {
                continue;
            }

if (!isset($installed['versions'][$packageName]['pretty_version'])) {
                return null;
            }

return $installed['versions'][$packageName]['pretty_version'];
        }

throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
    }

/**
     * @param  string      $packageName
     * @return string|null If the package is being replaced or provided but is not really installed, null will be returned as reference
     */
    public static function getReference($packageName)
    {
        foreach (self::getInstalled() as $installed) {
            if (!isset($installed['versions'][$packageName])) {
                continue;
            }

if (!isset($installed['versions'][$packageName]['reference'])) {
                return null;
            }

return $installed['versions'][$packageName]['reference'];
        }

throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
    }

/**
     * @param  string      $packageName
     * @return string|null If the package is being replaced or provided but is not really installed, null will be returned as install path. Packages of type metapackages also have a null install path.
     */
    public static function getInstallPath($packageName)
    {
        foreach (self::getInstalled() as $installed) {
            if (!isset($installed['versions'][$packageName])) {
                continue;
            }

return isset($installed['versions'][$packageName]['install_path']) ? $installed['versions'][$packageName]['install_path'] : null;
        }

throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
    }

/**
     * @return array
     * @psalm-return array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string, type: string}
     */
    public static function getRootPackage()
    {
        $installed = self::getInstalled();

return $installed[0]['root'];
    }

/**
     * Returns the raw installed.php data for custom implementations
     *
     * @deprecated Use getAllRawData() instead which returns all datasets for all autoloaders present in the process. getRawData only returns the first dataset loaded, which may not be what you expect.
     * @return array[]
     * @psalm-return array{root: array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string, type: string}, versions: array<string, array{dev_requirement: bool, pretty_version?: string, version?: string, aliases?: string[], reference?: string, replaced?: string[], provided?: string[], install_path?: string, type?: string}>}
     */
    public static function getRawData()
    {
        @trigger_error('getRawData only returns the first dataset loaded, which may not be what you expect. Use getAllRawData() instead which returns all datasets for all autoloaders present in the process.', E_USER_DEPRECATED);

if (null === self::$installed) {
            // only require the installed.php file if this file is loaded from its dumped location,
            // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
            if (substr(__DIR__, -8, 1) !== 'C') {
                self::$installed = include __DIR__ . '/installed.php';
            } else {
                self::$installed = array();
            }
        }

return self::$installed;
    }

/**
     * Returns the raw data of all installed.php which are currently loaded for custom implementations
     *
     * @return array[]
     * @psalm-return list<array{root: array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string, type: string}, versions: array<string, array{dev_requirement: bool, pretty_version?: string, version?: string, aliases?: string[], reference?: string, replaced?: string[], provided?: string[], install_path?: string, type?: string}>}>
     */
    public static function getAllRawData()
    {
        return self::getInstalled();
    }

/**
     * Lets you reload the static array from another file
     *
     * This is only useful for complex integrations in which a project needs to use
     * this class but then also needs to execute another project's autoloader in process,
     * and wants to ensure both projects have access to their version of installed.php.
     *
     * A typical case would be PHPUnit, where it would need to make sure it reads all
     * the data it needs from this class, then call reload() with
     * `require $CWD/vendor/composer/installed.php` (or similar) as input to make sure
     * the project in which it runs can then also use this class safely, without
     * interference between PHPUnit's dependencies and the project's dependencies.
     *
     * @param  array[] $data A vendor/composer/installed.php data set
     * @return void
     *
     * @psalm-param array{root: array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string, type: string}, versions: array<string, array{dev_requirement: bool, pretty_version?: string, version?: string, aliases?: string[], reference?: string, replaced?: string[], provided?: string[], install_path?: string, type?: string}>} $data
     */
    public static function reload($data)
    {
        self::$installed = $data;
        self::$installedByVendor = array();
    }

/**
     * @return array[]
     * @psalm-return list<array{root: array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string, type: string}, versions: array<string, array{dev_requirement: bool, pretty_version?: string, version?: string, aliases?: string[], reference?: string, replaced?: string[], provided?: string[], install_path?: string, type?: string}>}>
     */
    private static function getInstalled()
    {
        if (null === self::$canGetVendors) {
            self::$canGetVendors = method_exists('Composer\Autoload\ClassLoader', 'getRegisteredLoaders');
        }

$installed = array();

if (self::$canGetVendors) {
            foreach (ClassLoader::getRegisteredLoaders() as $vendorDir => $loader) {
                if (isset(self::$installedByVendor[$vendorDir])) {
                    $installed[] = self::$installedByVendor[$vendorDir];
                } elseif (is_file($vendorDir.'/composer/installed.php')) {
                    $installed[] = self::$installedByVendor[$vendorDir] = require $vendorDir.'/composer/installed.php';
                    if (null === self::$installed && strtr($vendorDir.'/composer', '\\', '/') === strtr(__DIR__, '\\', '/')) {
                        self::$installed = $installed[count($installed) - 1];
                    }
                }
            }
        }

if (null === self::$installed) {
            // only require the installed.php file if this file is loaded from its dumped location,
            // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
            if (substr(__DIR__, -8, 1) !== 'C') {
                self::$installed = require __DIR__ . '/installed.php';
            } else {
                self::$installed = array();
            }
        }
        $installed[] = self::$installed;

return $installed;
    }
}
<?php

namespace Composer;

use Composer\IO\IOInterface;
use Composer\Pcre\Preg;
use Composer\Util\Filesystem;
use Composer\Util\Platform;
use Composer\Util\Silencer;
use Symfony\Component\Finder\Finder;

/**
 * Reads/writes to a filesystem cache
 *
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class Cache
{
    /** @var bool|null */
    private static $cacheCollected = null;
    /** @var IOInterface */
    private $io;
    /** @var string */
    private $root;
    /** @var ?bool */
    private $enabled = null;
    /** @var string */
    private $allowlist;
    /** @var Filesystem */
    private $filesystem;
    /** @var bool */
    private $readOnly;

/**
     * @param IOInterface $io
     * @param string      $cacheDir   location of the cache
     * @param string      $allowlist  List of characters that are allowed in path names (used in a regex character class)
     * @param Filesystem  $filesystem optional filesystem instance
     * @param bool        $readOnly   whether the cache is in readOnly mode
     */
    public function __construct(IOInterface $io, $cacheDir, $allowlist = 'a-z0-9.', Filesystem $filesystem = null, $readOnly = false)
    {
        $this->io = $io;
        $this->root = rtrim($cacheDir, '/\\') . '/';
        $this->allowlist = $allowlist;
        $this->filesystem = $filesystem ?: new Filesystem();
        $this->readOnly = (bool) $readOnly;

if (!self::isUsable($cacheDir)) {
            $this->enabled = false;
        }
    }

/**
     * @param bool $readOnly
     *
     * @return void
     */
    public function setReadOnly($readOnly)
    {
        $this->readOnly = (bool) $readOnly;
    }

/**
     * @return bool
     */
    public function isReadOnly()
    {
        return $this->readOnly;
    }

/**
     * @param string $path
     *
     * @return bool
     */
    public static function isUsable($path)
    {
        return !Preg::isMatch('{(^|[\\\\/])(\$null|nul|NUL|/dev/null)([\\\\/]|$)}', $path);
    }

/**
     * @return bool
     */
    public function isEnabled()
    {
        if ($this->enabled === null) {
            $this->enabled = true;

if (
                (!is_dir($this->root) && !Silencer::call('mkdir', $this->root, 0777, true))
                || !is_writable($this->root)
            ) {
                $this->io->writeError('<warning>Cannot create cache directory ' . $this->root . ', or directory is not writable. Proceeding without cache</warning>');
                $this->enabled = false;
            }
        }

return $this->enabled;
    }

/**
     * @return string
     */
    public function getRoot()
    {
        return $this->root;
    }

/**
     * @param string $file
     *
     * @return string|false
     */
    public function read($file)
    {
        if ($this->isEnabled()) {
            $file = Preg::replace('{[^'.$this->allowlist.']}i', '-', $file);
            if (file_exists($this->root . $file)) {
                $this->io->writeError('Reading '.$this->root . $file.' from cache', true, IOInterface::DEBUG);

return file_get_contents($this->root . $file);
            }
        }

return false;
    }

/**
     * @param string $file
     * @param string $contents
     *
     * @return bool
     */
    public function write($file, $contents)
    {
        if ($this->isEnabled() && !$this->readOnly) {
            $file = Preg::replace('{[^'.$this->allowlist.']}i', '-', $file);

$this->io->writeError('Writing '.$this->root . $file.' into cache', true, IOInterface::DEBUG);

$tempFileName = $this->root . $file . uniqid('.', true) . '.tmp';
            try {
                return file_put_contents($tempFileName, $contents) !== false && rename($tempFileName, $this->root . $file);
            } catch (\ErrorException $e) {
                $this->io->writeError('<warning>Failed to write into cache: '.$e->getMessage().'</warning>', true, IOInterface::DEBUG);
                if (Preg::isMatch('{^file_put_contents: Only ([0-9]+) of ([0-9]+) bytes written}', $e->getMessage(), $m)) {
                    // Remove partial file.
                    unlink($tempFileName);

$message = sprintf(
                        '<warning>Writing %1$s into cache failed after %2$u of %3$u bytes written, only %4$u bytes of free space available</warning>',
                        $tempFileName,
                        $m[1],
                        $m[2],
                        @disk_free_space(dirname($tempFileName))
                    );

$this->io->writeError($message);

return false;
                }

throw $e;
            }
        }

return false;
    }

/**
     * Copy a file into the cache
     *
     * @param string $file
     * @param string $source
     *
     * @return bool
     */
    public function copyFrom($file, $source)
    {
        if ($this->isEnabled() && !$this->readOnly) {
            $file = Preg::replace('{[^'.$this->allowlist.']}i', '-', $file);
            $this->filesystem->ensureDirectoryExists(dirname($this->root . $file));

if (!file_exists($source)) {
                $this->io->writeError('<error>'.$source.' does not exist, can not write into cache</error>');
            } elseif ($this->io->isDebug()) {
                $this->io->writeError('Writing '.$this->root . $file.' into cache from '.$source);
            }

return copy($source, $this->root . $file);
        }

return false;
    }

/**
     * Copy a file out of the cache
     *
     * @param string $file
     * @param string $target
     *
     * @return bool
     */
    public function copyTo($file, $target)
    {
        if ($this->isEnabled()) {
            $file = Preg::replace('{[^'.$this->allowlist.']}i', '-', $file);
            if (file_exists($this->root . $file)) {
                try {
                    touch($this->root . $file, filemtime($this->root . $file), time());
                } catch (\ErrorException $e) {
                    // fallback in case the above failed due to incorrect ownership
                    // see https://github.com/composer/composer/issues/4070
                    Silencer::call('touch', $this->root . $file);
                }

$this->io->writeError('Reading '.$this->root . $file.' from cache', true, IOInterface::DEBUG);

return copy($this->root . $file, $target);
            }
        }

return false;
    }

/**
     * @return bool
     */
    public function gcIsNecessary()
    {
        if (self::$cacheCollected) {
            return false;
        }

self::$cacheCollected = true;
        if (Platform::getEnv('COMPOSER_TEST_SUITE')) {
            return false;
        }

if (PHP_VERSION_ID > 70000) {
            return !random_int(0, 50);
        }

return !mt_rand(0, 50);
    }

/**
     * @param string $file
     *
     * @return bool
     */
    public function remove($file)
    {
        if ($this->isEnabled()) {
            $file = Preg::replace('{[^'.$this->allowlist.']}i', '-', $file);
            if (file_exists($this->root . $file)) {
                return $this->filesystem->unlink($this->root . $file);
            }
        }

return false;
    }

/**
     * @return bool
     */
    public function clear()
    {
        if ($this->isEnabled()) {
            $this->filesystem->emptyDirectory($this->root);

return true;
        }

return false;
    }

/**
     * @param string $file
     * @return int|false
     * @phpstan-return int<0, max>|false
     */
    public function getAge($file)
    {
        if ($this->isEnabled()) {
            $file = Preg::replace('{[^'.$this->allowlist.']}i', '-', $file);
            if (file_exists($this->root . $file) && ($mtime = filemtime($this->root . $file)) !== false) {
                return abs(time() - $mtime);
            }
        }

return false;
    }

/**
     * @param int $ttl
     * @param int $maxSize
     *
     * @return bool
     */
    public function gc($ttl, $maxSize)
    {
        if ($this->isEnabled()) {
            $expire = new \DateTime();
            $expire->modify('-'.$ttl.' seconds');

$finder = $this->getFinder()->date('until '.$expire->format('Y-m-d H:i:s'));
            foreach ($finder as $file) {
                $this->filesystem->unlink($file->getPathname());
            }

$totalSize = $this->filesystem->size($this->root);
            if ($totalSize > $maxSize) {
                $iterator = $this->getFinder()->sortByAccessedTime()->getIterator();
                while ($totalSize > $maxSize && $iterator->valid()) {
                    $filepath = $iterator->current()->getPathname();
                    $totalSize -= $this->filesystem->size($filepath);
                    $this->filesystem->unlink($filepath);
                    $iterator->next();
                }
            }

self::$cacheCollected = true;

return true;
        }

return false;
    }

/**
     * @param string $file
     *
     * @return string|false
     */
    public function sha1($file)
    {
        if ($this->isEnabled()) {
            $file = Preg::replace('{[^'.$this->allowlist.']}i', '-', $file);
            if (file_exists($this->root . $file)) {
                return sha1_file($this->root . $file);
            }
        }

return false;
    }

/**
     * @param string $file
     *
     * @return string|false
     */
    public function sha256($file)
    {
        if ($this->isEnabled()) {
            $file = Preg::replace('{[^'.$this->allowlist.']}i', '-', $file);
            if (file_exists($this->root . $file)) {
                return hash_file('sha256', $this->root . $file);
            }
        }

return false;
    }

/**
     * @return Finder
     */
    protected function getFinder()
    {
        return Finder::create()->in($this->root)->files();
    }
}
<?php

namespace Composer\Repository;

use Composer\Composer;
use Composer\Package\CompletePackage;
use Composer\Package\CompletePackageInterface;
use Composer\Package\Link;
use Composer\Package\PackageInterface;
use Composer\Package\Version\VersionParser;
use Composer\Pcre\Preg;
use Composer\Platform\HhvmDetector;
use Composer\Platform\Runtime;
use Composer\Platform\Version;
use Composer\Plugin\PluginInterface;
use Composer\Semver\Constraint\Constraint;
use Composer\Util\Silencer;
use Composer\XdebugHandler\XdebugHandler;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class PlatformRepository extends ArrayRepository
{
    const PLATFORM_PACKAGE_REGEX = '{^(?:php(?:-64bit|-ipv6|-zts|-debug)?|hhvm|(?:ext|lib)-[a-z0-9](?:[_.-]?[a-z0-9]+)*|composer(?:-(?:plugin|runtime)-api)?)$}iD';

/**
     * @var ?string
     */
    private static $lastSeenPlatformPhp = null;

/**
     * @var VersionParser
     */
    private $versionParser;

/**
     * Defines overrides so that the platform can be mocked
     *
     * Keyed by package name (lowercased)
     *
     * @var array<string, array{name: string, version: string|false}>
     */
    private $overrides = array();

/**
     * Stores which packages have been disabled and their actual version
     *
     * @var array<string, CompletePackageInterface>
     */
    private $disabledPackages = array();

/** @var Runtime */
    private $runtime;
    /** @var HhvmDetector */
    private $hhvmDetector;

/**
     * @param array<string, string|false> $overrides
     */
    public function __construct(array $packages = array(), array $overrides = array(), Runtime $runtime = null, HhvmDetector $hhvmDetector = null)
    {
        $this->runtime = $runtime ?: new Runtime();
        $this->hhvmDetector = $hhvmDetector ?: new HhvmDetector();
        foreach ($overrides as $name => $version) {
            if (!is_string($version) && false !== $version) { // @phpstan-ignore-line
                throw new \UnexpectedValueException('config.platform.'.$name.' should be a string or false, but got '.gettype($version).' '.var_export($version, true));
            }
            if ($name === 'php' && $version === false) {
                throw new \UnexpectedValueException('config.platform.'.$name.' cannot be set to false as you cannot disable php entirely.');
            }
            $this->overrides[strtolower($name)] = array('name' => $name, 'version' => $version);
        }
        parent::__construct($packages);
    }

public function getRepoName()
    {
        return 'platform repo';
    }

/**
     * @param  string  $name
     * @return boolean
     */
    public function isPlatformPackageDisabled($name)
    {
        return isset($this->disabledPackages[$name]);
    }

/**
     * @return array<string, CompletePackageInterface>
     */
    public function getDisabledPackages()
    {
        return $this->disabledPackages;
    }

protected function initialize()
    {
        parent::initialize();

$this->versionParser = new VersionParser();

// Add each of the override versions as options.
        // Later we might even replace the extensions instead.
        foreach ($this->overrides as $override) {
            // Check that it's a platform package.
            if (!self::isPlatformPackage($override['name'])) {
                throw new \InvalidArgumentException('Invalid platform package name in config.platform: '.$override['name']);
            }

if ($override['version'] !== false) {
                $this->addOverriddenPackage($override);
            }
        }

$prettyVersion = Composer::getVersion();
        $version = $this->versionParser->normalize($prettyVersion);
        $composer = new CompletePackage('composer', $version, $prettyVersion);
        $composer->setDescription('Composer package');
        $this->addPackage($composer);

$prettyVersion = PluginInterface::PLUGIN_API_VERSION;
        $version = $this->versionParser->normalize($prettyVersion);
        $composerPluginApi = new CompletePackage('composer-plugin-api', $version, $prettyVersion);
        $composerPluginApi->setDescription('The Composer Plugin API');
        $this->addPackage($composerPluginApi);

$prettyVersion = Composer::RUNTIME_API_VERSION;
        $version = $this->versionParser->normalize($prettyVersion);
        $composerRuntimeApi = new CompletePackage('composer-runtime-api', $version, $prettyVersion);
        $composerRuntimeApi->setDescription('The Composer Runtime API');
        $this->addPackage($composerRuntimeApi);

try {
            $prettyVersion = $this->runtime->getConstant('PHP_VERSION');
            $version = $this->versionParser->normalize($prettyVersion);
        } catch (\UnexpectedValueException $e) {
            $prettyVersion = Preg::replace('#^([^~+-]+).*$#', '$1', $this->runtime->getConstant('PHP_VERSION'));
            $version = $this->versionParser->normalize($prettyVersion);
        }

$php = new CompletePackage('php', $version, $prettyVersion);
        $php->setDescription('The PHP interpreter');
        $this->addPackage($php);

if ($this->runtime->getConstant('PHP_DEBUG')) {
            $phpdebug = new CompletePackage('php-debug', $version, $prettyVersion);
            $phpdebug->setDescription('The PHP interpreter, with debugging symbols');
            $this->addPackage($phpdebug);
        }

if ($this->runtime->hasConstant('PHP_ZTS') && $this->runtime->getConstant('PHP_ZTS')) {
            $phpzts = new CompletePackage('php-zts', $version, $prettyVersion);
            $phpzts->setDescription('The PHP interpreter, with Zend Thread Safety');
            $this->addPackage($phpzts);
        }

if ($this->runtime->getConstant('PHP_INT_SIZE') === 8) {
            $php64 = new CompletePackage('php-64bit', $version, $prettyVersion);
            $php64->setDescription('The PHP interpreter, 64bit');
            $this->addPackage($php64);
        }

// The AF_INET6 constant is only defined if ext-sockets is available but
        // IPv6 support might still be available.
        if ($this->runtime->hasConstant('AF_INET6') || Silencer::call(array($this->runtime, 'invoke'), 'inet_pton', array('::')) !== false) {
            $phpIpv6 = new CompletePackage('php-ipv6', $version, $prettyVersion);
            $phpIpv6->setDescription('The PHP interpreter, with IPv6 support');
            $this->addPackage($phpIpv6);
        }

$loadedExtensions = $this->runtime->getExtensions();

// Extensions scanning
        foreach ($loadedExtensions as $name) {
            if (in_array($name, array('standard', 'Core'))) {
                continue;
            }

$this->addExtension($name, $this->runtime->getExtensionVersion($name));
        }

// Check for Xdebug in a restarted process
        if (!in_array('xdebug', $loadedExtensions, true) && ($prettyVersion = XdebugHandler::getSkippedVersion())) {
            $this->addExtension('xdebug', $prettyVersion);
        }

// Another quick loop, just for possible libraries
        // Doing it this way to know that functions or constants exist before
        // relying on them.
        foreach ($loadedExtensions as $name) {
            switch ($name) {
                case 'amqp':
                    $info = $this->runtime->getExtensionInfo($name);

// librabbitmq version => 0.9.0
                    if (Preg::isMatch('/^librabbitmq version => (?<version>.+)$/im', $info, $librabbitmqMatches)) {
                        $this->addLibrary($name.'-librabbitmq', $librabbitmqMatches['version'], 'AMQP librabbitmq version');
                    }

// AMQP protocol version => 0-9-1
                    if (Preg::isMatch('/^AMQP protocol version => (?<version>.+)$/im', $info, $protocolMatches)) {
                        $this->addLibrary($name.'-protocol', str_replace('-', '.', $protocolMatches['version']), 'AMQP protocol version');
                    }
                    break;

case 'bz2':
                    $info = $this->runtime->getExtensionInfo($name);

// BZip2 Version => 1.0.6, 6-Sept-2010
                    if (Preg::isMatch('/^BZip2 Version => (?<version>.*),/im', $info, $matches)) {
                        $this->addLibrary($name, $matches['version']);
                    }
                    break;

case 'curl':
                    $curlVersion = $this->runtime->invoke('curl_version');
                    $this->addLibrary($name, $curlVersion['version']);

$info = $this->runtime->getExtensionInfo($name);

// SSL Version => OpenSSL/1.0.1t
                    if (Preg::isMatch('{^SSL Version => (?<library>[^/]+)/(?<version>.+)$}im', $info, $sslMatches)) {
                        $library = strtolower($sslMatches['library']);
                        if ($library === 'openssl') {
                            $parsedVersion = Version::parseOpenssl($sslMatches['version'], $isFips);
                            $this->addLibrary($name.'-openssl'.($isFips ? '-fips' : ''), $parsedVersion, 'curl OpenSSL version ('.$parsedVersion.')', array(), $isFips ? array('curl-openssl') : array());
                        } else {
                            $this->addLibrary($name.'-'.$library, $sslMatches['version'], 'curl '.$library.' version ('.$sslMatches['version'].')', array('curl-openssl'));
                        }
                    }

// libSSH Version => libssh2/1.4.3
                    if (Preg::isMatch('{^libSSH Version => (?<library>[^/]+)/(?<version>.+?)(?:/.*)?$}im', $info, $sshMatches)) {
                        $this->addLibrary($name.'-'.strtolower($sshMatches['library']), $sshMatches['version'], 'curl '.$sshMatches['library'].' version');
                    }

// ZLib Version => 1.2.8
                    if (Preg::isMatch('{^ZLib Version => (?<version>.+)$}im', $info, $zlibMatches)) {
                        $this->addLibrary($name.'-zlib', $zlibMatches['version'], 'curl zlib version');
                    }
                    break;

case 'date':
                    $info = $this->runtime->getExtensionInfo($name);

// timelib version => 2018.03
                    if (Preg::isMatch('/^timelib version => (?<version>.+)$/im', $info, $timelibMatches)) {
                        $this->addLibrary($name.'-timelib', $timelibMatches['version'], 'date timelib version');
                    }

// Timezone Database => internal
                    if (Preg::isMatch('/^Timezone Database => (?<source>internal|external)$/im', $info, $zoneinfoSourceMatches)) {
                        $external = $zoneinfoSourceMatches['source'] === 'external';
                        if (Preg::isMatch('/^"Olson" Timezone Database Version => (?<version>.+?)(\.system)?$/im', $info, $zoneinfoMatches)) {
                            // If the timezonedb is provided by ext/timezonedb, register that version as a replacement
                            if ($external && in_array('timezonedb', $loadedExtensions, true)) {
                                $this->addLibrary('timezonedb-zoneinfo', $zoneinfoMatches['version'], 'zoneinfo ("Olson") database for date (replaced by timezonedb)', array($name.'-zoneinfo'));
                            } else {
                                $this->addLibrary($name.'-zoneinfo', $zoneinfoMatches['version'], 'zoneinfo ("Olson") database for date');
                            }
                        }
                    }
                    break;

case 'fileinfo':
                    $info = $this->runtime->getExtensionInfo($name);

// libmagic => 537
                    if (Preg::isMatch('/^libmagic => (?<version>.+)$/im', $info, $magicMatches)) {
                        $this->addLibrary($name.'-libmagic', $magicMatches['version'], 'fileinfo libmagic version');
                    }
                    break;

case 'gd':
                    $this->addLibrary($name, $this->runtime->getConstant('GD_VERSION'));

$info = $this->runtime->getExtensionInfo($name);

if (Preg::isMatch('/^libJPEG Version => (?<version>.+?)(?: compatible)?$/im', $info, $libjpegMatches)) {
                        $this->addLibrary($name.'-libjpeg', Version::parseLibjpeg($libjpegMatches['version']), 'libjpeg version for gd');
                    }

if (Preg::isMatch('/^libPNG Version => (?<version>.+)$/im', $info, $libpngMatches)) {
                        $this->addLibrary($name.'-libpng', $libpngMatches['version'], 'libpng version for gd');
                    }

if (Preg::isMatch('/^FreeType Version => (?<version>.+)$/im', $info, $freetypeMatches)) {
                        $this->addLibrary($name.'-freetype', $freetypeMatches['version'], 'freetype version for gd');
                    }

if (Preg::isMatch('/^libXpm Version => (?<versionId>\d+)$/im', $info, $libxpmMatches)) {
                        $this->addLibrary($name.'-libxpm', Version::convertLibxpmVersionId($libxpmMatches['versionId']), 'libxpm version for gd');
                    }

break;

case 'gmp':
                    $this->addLibrary($name, $this->runtime->getConstant('GMP_VERSION'));
                    break;

case 'iconv':
                    $this->addLibrary($name, $this->runtime->getConstant('ICONV_VERSION'));
                    break;

case 'intl':
                    $info = $this->runtime->getExtensionInfo($name);

$description = 'The ICU unicode and globalization support library';
                    // Truthy check is for testing only so we can make the condition fail
                    if ($this->runtime->hasConstant('INTL_ICU_VERSION')) {
                        $this->addLibrary('icu', $this->runtime->getConstant('INTL_ICU_VERSION'), $description);
                    } elseif (Preg::isMatch('/^ICU version => (?<version>.+)$/im', $info, $matches)) {
                        $this->addLibrary('icu', $matches['version'], $description);
                    }

// ICU TZData version => 2019c
                    if (Preg::isMatch('/^ICU TZData version => (?<version>.*)$/im', $info, $zoneinfoMatches)) {
                        $this->addLibrary('icu-zoneinfo', Version::parseZoneinfoVersion($zoneinfoMatches['version']), 'zoneinfo ("Olson") database for icu');
                    }

// Add a separate version for the CLDR library version
                    if ($this->runtime->hasClass('ResourceBundle')) {
                        $cldrVersion = $this->runtime->invoke(array('ResourceBundle', 'create'), array('root', 'ICUDATA', false))->get('Version');
                        $this->addLibrary('icu-cldr', $cldrVersion, 'ICU CLDR project version');
                    }

if ($this->runtime->hasClass('IntlChar')) {
                        $this->addLibrary('icu-unicode', implode('.', array_slice($this->runtime->invoke(array('IntlChar', 'getUnicodeVersion')), 0, 3)), 'ICU unicode version');
                    }
                    break;

case 'imagick':
                    $imageMagickVersion = $this->runtime->construct('Imagick')->getVersion();
                    // 6.x: ImageMagick 6.2.9 08/24/06 Q16 http://www.imagemagick.org
                    // 7.x: ImageMagick 7.0.8-34 Q16 x86_64 2019-03-23 https://imagemagick.org
                    Preg::match('/^ImageMagick (?<version>[\d.]+)(?:-(?<patch>\d+))?/', $imageMagickVersion['versionString'], $matches);
                    $version = $matches['version'];
                    if (isset($matches['patch'])) {
                        $version .= '.'.$matches['patch'];
                    }

$this->addLibrary($name.'-imagemagick', $version, null, array('imagick'));
                    break;

case 'ldap':
                    $info = $this->runtime->getExtensionInfo($name);

if (Preg::isMatch('/^Vendor Version => (?<versionId>\d+)$/im', $info, $matches) && Preg::isMatch('/^Vendor Name => (?<vendor>.+)$/im', $info, $vendorMatches)) {
                        $this->addLibrary($name.'-'.strtolower($vendorMatches['vendor']), Version::convertOpenldapVersionId($matches['versionId']), $vendorMatches['vendor'].' version of ldap');
                    }
                    break;

case 'libxml':
                    // ext/dom, ext/simplexml, ext/xmlreader and ext/xmlwriter use the same libxml as the ext/libxml
                    $libxmlProvides = array_map(function ($extension) {
                        return $extension . '-libxml';
                    }, array_intersect($loadedExtensions, array('dom', 'simplexml', 'xml', 'xmlreader', 'xmlwriter')));
                    $this->addLibrary($name, $this->runtime->getConstant('LIBXML_DOTTED_VERSION'), 'libxml library version', array(), $libxmlProvides);

break;

case 'mbstring':
                    $info = $this->runtime->getExtensionInfo($name);

// libmbfl version => 1.3.2
                    if (Preg::isMatch('/^libmbfl version => (?<version>.+)$/im', $info, $libmbflMatches)) {
                        $this->addLibrary($name.'-libmbfl', $libmbflMatches['version'], 'mbstring libmbfl version');
                    }

if ($this->runtime->hasConstant('MB_ONIGURUMA_VERSION')) {
                        $this->addLibrary($name.'-oniguruma', $this->runtime->getConstant('MB_ONIGURUMA_VERSION'), 'mbstring oniguruma version');

// Multibyte regex (oniguruma) version => 5.9.5
                    // oniguruma version => 6.9.0
                    } elseif (Preg::isMatch('/^(?:oniguruma|Multibyte regex $oniguruma$) version => (?<version>.+)$/im', $info, $onigurumaMatches)) {
                        $this->addLibrary($name.'-oniguruma', $onigurumaMatches['version'], 'mbstring oniguruma version');
                    }

break;

case 'memcached':
                    $info = $this->runtime->getExtensionInfo($name);

// libmemcached version => 1.0.18
                    if (Preg::isMatch('/^libmemcached version => (?<version>.+)$/im', $info, $matches)) {
                        $this->addLibrary($name.'-libmemcached', $matches['version'], 'libmemcached version');
                    }
                    break;

case 'openssl':
                    // OpenSSL 1.1.1g  21 Apr 2020
                    if (Preg::isMatch('{^(?:OpenSSL|LibreSSL)?\s*(?<version>\S+)}i', $this->runtime->getConstant('OPENSSL_VERSION_TEXT'), $matches)) {
                        $parsedVersion = Version::parseOpenssl($matches['version'], $isFips);
                        $this->addLibrary($name.($isFips ? '-fips' : ''), $parsedVersion, $this->runtime->getConstant('OPENSSL_VERSION_TEXT'), array(), $isFips ? array($name) : array());
                    }
                    break;

case 'pcre':
                    $this->addLibrary($name, Preg::replace('{^(\S+).*}', '$1', $this->runtime->getConstant('PCRE_VERSION')));

$info = $this->runtime->getExtensionInfo($name);

// PCRE Unicode Version => 12.1.0
                    if (Preg::isMatch('/^PCRE Unicode Version => (?<version>.+)$/im', $info, $pcreUnicodeMatches)) {
                        $this->addLibrary($name.'-unicode', $pcreUnicodeMatches['version'], 'PCRE Unicode version support');
                    }

break;

case 'mysqlnd':
                case 'pdo_mysql':
                    $info = $this->runtime->getExtensionInfo($name);

if (Preg::isMatch('/^(?:Client API version|Version) => mysqlnd (?<version>.+?) /mi', $info, $matches)) {
                        $this->addLibrary($name.'-mysqlnd', $matches['version'], 'mysqlnd library version for '.$name);
                    }
                    break;

case 'mongodb':
                    $info = $this->runtime->getExtensionInfo($name);

if (Preg::isMatch('/^libmongoc bundled version => (?<version>.+)$/im', $info, $libmongocMatches)) {
                        $this->addLibrary($name.'-libmongoc', $libmongocMatches['version'], 'libmongoc version of mongodb');
                    }

if (Preg::isMatch('/^libbson bundled version => (?<version>.+)$/im', $info, $libbsonMatches)) {
                        $this->addLibrary($name.'-libbson', $libbsonMatches['version'], 'libbson version of mongodb');
                    }
                    break;

case 'pgsql':
                case 'pdo_pgsql':
                    $info = $this->runtime->getExtensionInfo($name);

if (Preg::isMatch('/^PostgreSQL$libpq$ Version => (?<version>.*)$/im', $info, $matches)) {
                        $this->addLibrary($name.'-libpq', $matches['version'], 'libpq for '.$name);
                    }
                    break;

case 'libsodium':
                case 'sodium':
                    if ($this->runtime->hasConstant('SODIUM_LIBRARY_VERSION')) {
                        $this->addLibrary('libsodium', $this->runtime->getConstant('SODIUM_LIBRARY_VERSION'));
                    }
                    break;

case 'sqlite3':
                case 'pdo_sqlite':
                    $info = $this->runtime->getExtensionInfo($name);

if (Preg::isMatch('/^SQLite Library => (?<version>.+)$/im', $info, $matches)) {
                        $this->addLibrary($name.'-sqlite', $matches['version']);
                    }
                    break;

case 'ssh2':
                    $info = $this->runtime->getExtensionInfo($name);

if (Preg::isMatch('/^libssh2 version => (?<version>.+)$/im', $info, $matches)) {
                        $this->addLibrary($name.'-libssh2', $matches['version']);
                    }
                    break;

case 'xsl':
                    $this->addLibrary('libxslt', $this->runtime->getConstant('LIBXSLT_DOTTED_VERSION'), null, array('xsl'));

$info = $this->runtime->getExtensionInfo('xsl');
                    if (Preg::isMatch('/^libxslt compiled against libxml Version => (?<version>.+)$/im', $info, $matches)) {
                        $this->addLibrary('libxslt-libxml', $matches['version'], 'libxml version libxslt is compiled against');
                    }
                    break;

case 'yaml':
                    $info = $this->runtime->getExtensionInfo('yaml');

if (Preg::isMatch('/^LibYAML Version => (?<version>.+)$/im', $info, $matches)) {
                        $this->addLibrary($name.'-libyaml', $matches['version'], 'libyaml version of yaml');
                    }
                    break;

case 'zip':
                    if ($this->runtime->hasConstant('LIBZIP_VERSION', 'ZipArchive')) {
                        $this->addLibrary($name.'-libzip', $this->runtime->getConstant('LIBZIP_VERSION', 'ZipArchive'), null, array('zip'));
                    }
                    break;

case 'zlib':
                    if ($this->runtime->hasConstant('ZLIB_VERSION')) {
                        $this->addLibrary($name, $this->runtime->getConstant('ZLIB_VERSION'));

// Linked Version => 1.2.8
                    } elseif (Preg::isMatch('/^Linked Version => (?<version>.+)$/im', $this->runtime->getExtensionInfo($name), $matches)) {
                        $this->addLibrary($name, $matches['version']);
                    }
                    break;

default:
                    break;
            }
        }

$hhvmVersion = $this->hhvmDetector->getVersion();
        if ($hhvmVersion) {
            try {
                $prettyVersion = $hhvmVersion;
                $version = $this->versionParser->normalize($prettyVersion);
            } catch (\UnexpectedValueException $e) {
                $prettyVersion = Preg::replace('#^([^~+-]+).*$#', '$1', $hhvmVersion);
                $version = $this->versionParser->normalize($prettyVersion);
            }

$hhvm = new CompletePackage('hhvm', $version, $prettyVersion);
            $hhvm->setDescription('The HHVM Runtime (64bit)');
            $this->addPackage($hhvm);
        }
    }

/**
     * @inheritDoc
     */
    public function addPackage(PackageInterface $package)
    {
        if (!$package instanceof CompletePackage) {
            throw new \UnexpectedValueException('Expected CompletePackage but got '.get_class($package));
        }

// Skip if overridden
        if (isset($this->overrides[$package->getName()])) {
            if ($this->overrides[$package->getName()]['version'] === false) {
                $this->addDisabledPackage($package);
                return;
            }

$overrider = $this->findPackage($package->getName(), '*');
            if ($package->getVersion() === $overrider->getVersion()) {
                $actualText = 'same as actual';
            } else {
                $actualText = 'actual: '.$package->getPrettyVersion();
            }
            if ($overrider instanceof CompletePackageInterface) {
                $overrider->setDescription($overrider->getDescription().', '.$actualText);
            }

return;
        }

// Skip if PHP is overridden and we are adding a php-* package
        if (isset($this->overrides['php']) && 0 === strpos($package->getName(), 'php-')) {
            if (isset($this->overrides[$package->getName()]) && $this->overrides[$package->getName()]['version'] === false) {
                $this->addDisabledPackage($package);
                return;
            }

$overrider = $this->addOverriddenPackage($this->overrides['php'], $package->getPrettyName());
            if ($package->getVersion() === $overrider->getVersion()) {
                $actualText = 'same as actual';
            } else {
                $actualText = 'actual: '.$package->getPrettyVersion();
            }
            $overrider->setDescription($overrider->getDescription().', '.$actualText);

return;
        }

parent::addPackage($package);
    }

/**
     * @param array{version: string, name: string} $override
     * @param string|null $name
     *
     * @return CompletePackage
     */
    private function addOverriddenPackage(array $override, $name = null)
    {
        $version = $this->versionParser->normalize($override['version']);
        $package = new CompletePackage($name ?: $override['name'], $version, $override['version']);
        $package->setDescription('Package overridden via config.platform');
        $package->setExtra(array('config.platform' => true));
        parent::addPackage($package);

if ($package->getName() === 'php') {
            self::$lastSeenPlatformPhp = implode('.', array_slice(explode('.', $package->getVersion()), 0, 3));
        }

return $package;
    }

/**
     * @return void
     */
    private function addDisabledPackage(CompletePackage $package)
    {
        $package->setDescription($package->getDescription().'. <warning>Package disabled via config.platform</warning>');
        $package->setExtra(array('config.platform' => true));

$this->disabledPackages[$package->getName()] = $package;
    }

/**
     * Parses the version and adds a new package to the repository
     *
     * @param string      $name
     * @param null|string $prettyVersion
     *
     * @return void
     */
    private function addExtension($name, $prettyVersion)
    {
        $extraDescription = null;

try {
            $version = $this->versionParser->normalize($prettyVersion);
        } catch (\UnexpectedValueException $e) {
            $extraDescription = ' (actual version: '.$prettyVersion.')';
            if (Preg::isMatch('{^(\d+\.\d+\.\d+(?:\.\d+)?)}', $prettyVersion, $match)) {
                $prettyVersion = $match[1];
            } else {
                $prettyVersion = '0';
            }
            $version = $this->versionParser->normalize($prettyVersion);
        }

$packageName = $this->buildPackageName($name);
        $ext = new CompletePackage($packageName, $version, $prettyVersion);
        $ext->setDescription('The '.$name.' PHP extension'.$extraDescription);

if ($name === 'uuid') {
            $ext->setReplaces(array(
                'lib-uuid' => new Link('ext-uuid', 'lib-uuid', new Constraint('=', $version), Link::TYPE_REPLACE, $ext->getPrettyVersion()),
            ));
        }

$this->addPackage($ext);
    }

/**
     * @param  string $name
     * @return string
     */
    private function buildPackageName($name)
    {
        return 'ext-' . str_replace(' ', '-', strtolower($name));
    }

/**
     * @param string      $name
     * @param string      $prettyVersion
     * @param string|null $description
     * @param string[]    $replaces
     * @param string[]    $provides
     *
     * @return void
     */
    private function addLibrary($name, $prettyVersion, $description = null, array $replaces = array(), array $provides = array())
    {
        try {
            $version = $this->versionParser->normalize($prettyVersion);
        } catch (\UnexpectedValueException $e) {
            return;
        }

if ($description === null) {
            $description = 'The '.$name.' library';
        }

$lib = new CompletePackage('lib-'.$name, $version, $prettyVersion);
        $lib->setDescription($description);

$replaceLinks = array();
        foreach ($replaces as $replace) {
            $replace = strtolower($replace);
            $replaceLinks[$replace] = new Link('lib-'.$name, 'lib-'.$replace, new Constraint('=', $version), Link::TYPE_REPLACE, $lib->getPrettyVersion());
        }
        $provideLinks = array();
        foreach ($provides as $provide) {
            $provide = strtolower($provide);
            $provideLinks[$provide] = new Link('lib-'.$name, 'lib-'.$provide, new Constraint('=', $version), Link::TYPE_PROVIDE, $lib->getPrettyVersion());
        }
        $lib->setReplaces($replaceLinks);
        $lib->setProvides($provideLinks);

$this->addPackage($lib);
    }

/**
     * Check if a package name is a platform package.
     *
     * @param  string $name
     * @return bool
     */
    public static function isPlatformPackage($name)
    {
        static $cache = array();

if (isset($cache[$name])) {
            return $cache[$name];
        }

return $cache[$name] = Preg::isMatch(PlatformRepository::PLATFORM_PACKAGE_REGEX, $name);
    }

/**
     * Returns the last seen config.platform.php version if defined
     *
     * This is a best effort attempt for internal purposes, retrieve the real
     * packages from a PlatformRepository instance if you need a version guaranteed to
     * be correct.
     *
     * @internal
     * @return string|null
     */
    public static function getPlatformPhpVersion()
    {
        return self::$lastSeenPlatformPhp;
    }

public function search($query, $mode = 0, $type = null)
    {
        // suppress vendor search as there are no vendors to match in platform packages
        if ($mode === self::SEARCH_VENDOR) {
            return array();
        }

return parent::search($query, $mode, $type);
    }
}
<?php

namespace Composer\Repository;

use Composer\Package\BasePackage;
use Composer\Package\Loader\ArrayLoader;
use Composer\Package\PackageInterface;
use Composer\Package\AliasPackage;
use Composer\Package\CompletePackage;
use Composer\Package\CompleteAliasPackage;
use Composer\Package\Version\VersionParser;
use Composer\Package\Version\StabilityFilter;
use Composer\Json\JsonFile;
use Composer\Cache;
use Composer\Config;
use Composer\IO\IOInterface;
use Composer\Pcre\Preg;
use Composer\Plugin\PostFileDownloadEvent;
use Composer\Semver\CompilingMatcher;
use Composer\Util\HttpDownloader;
use Composer\Util\Loop;
use Composer\Plugin\PluginEvents;
use Composer\Plugin\PreFileDownloadEvent;
use Composer\EventDispatcher\EventDispatcher;
use Composer\Downloader\TransportException;
use Composer\Semver\Constraint\ConstraintInterface;
use Composer\Semver\Constraint\Constraint;
use Composer\Semver\Constraint\MatchAllConstraint;
use Composer\Util\Http\Response;
use Composer\MetadataMinifier\MetadataMinifier;
use Composer\Util\Url;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class ComposerRepository extends ArrayRepository implements ConfigurableRepositoryInterface
{
    /**
     * @var mixed[]
     * @phpstan-var array{url: string, options?: mixed[], type?: 'composer', allow_ssl_downgrade?: bool}
     */
    private $repoConfig;
    /** @var mixed[] */
    private $options;
    /** @var string */
    private $url;
    /** @var string */
    private $baseUrl;
    /** @var IOInterface */
    private $io;
    /** @var HttpDownloader */
    private $httpDownloader;
    /** @var Loop */
    private $loop;
    /** @var Cache */
    protected $cache;
    /** @var ?string */
    protected $notifyUrl = null;
    /** @var ?string */
    protected $searchUrl = null;
    /** @var ?string a URL containing %package% which can be queried to get providers of a given name */
    protected $providersApiUrl = null;
    /** @var bool */
    protected $hasProviders = false;
    /** @var ?string */
    protected $providersUrl = null;
    /** @var ?string */
    protected $listUrl = null;
    /** @var bool Indicates whether a comprehensive list of packages this repository might provide is expressed in the repository root. **/
    protected $hasAvailablePackageList = false;
    /** @var ?array<string> */
    protected $availablePackages = null;
    /** @var ?array<string> */
    protected $availablePackagePatterns = null;
    /** @var ?string */
    protected $lazyProvidersUrl = null;
    /** @var ?array<string, array{sha256: string}> */
    protected $providerListing;
    /** @var ArrayLoader */
    protected $loader;
    /** @var bool */
    private $allowSslDowngrade = false;
    /** @var ?EventDispatcher */
    private $eventDispatcher;
    /** @var ?array<string, array<int, array{url: string, preferred: bool}>> */
    private $sourceMirrors;
    /** @var ?array<int, array{url: string, preferred: bool}> */
    private $distMirrors;
    /** @var bool */
    private $degradedMode = false;
    /** @var mixed[]|true */
    private $rootData;
    /** @var bool */
    private $hasPartialPackages = false;
    /** @var ?array<string, mixed[]> */
    private $partialPackagesByName = null;

/**
     * TODO v3 should make this private once we can drop PHP 5.3 support
     * @private
     * @var array list of package names which are fresh and can be loaded from the cache directly in case loadPackage is called several times
     *            useful for v2 metadata repositories with lazy providers
     * @phpstan-var array<string, true>
     */
    public $freshMetadataUrls = array();

/**
     * TODO v3 should make this private once we can drop PHP 5.3 support
     * @private
     * @var array list of package names which returned a 404 and should not be re-fetched in case loadPackage is called several times
     *            useful for v2 metadata repositories with lazy providers
     * @phpstan-var array<string, true>
     */
    public $packagesNotFoundCache = array();
    /**
     * TODO v3 should make this private once we can drop PHP 5.3 support
     * @private
     * @var VersionParser
     */
    public $versionParser;

/**
     * @param array<string, mixed> $repoConfig
     * @phpstan-param array{url: string, options?: mixed[], type?: 'composer', allow_ssl_downgrade?: bool} $repoConfig
     */
    public function __construct(array $repoConfig, IOInterface $io, Config $config, HttpDownloader $httpDownloader, EventDispatcher $eventDispatcher = null)
    {
        parent::__construct();
        if (!Preg::isMatch('{^[\w.]+\??://}', $repoConfig['url'])) {
            // assume http as the default protocol
            $repoConfig['url'] = 'http://'.$repoConfig['url'];
        }
        $repoConfig['url'] = rtrim($repoConfig['url'], '/');

if (strpos($repoConfig['url'], 'https?') === 0) {
            $repoConfig['url'] = (extension_loaded('openssl') ? 'https' : 'http') . substr($repoConfig['url'], 6);
        }

$urlBits = parse_url($repoConfig['url']);
        if ($urlBits === false || empty($urlBits['scheme'])) {
            throw new \UnexpectedValueException('Invalid url given for Composer repository: '.$repoConfig['url']);
        }

if (!isset($repoConfig['options'])) {
            $repoConfig['options'] = array();
        }
        if (isset($repoConfig['allow_ssl_downgrade']) && true === $repoConfig['allow_ssl_downgrade']) {
            $this->allowSslDowngrade = true;
        }

$this->options = $repoConfig['options'];
        $this->url = $repoConfig['url'];

// force url for packagist.org to repo.packagist.org
        if (Preg::isMatch('{^(?P<proto>https?)://packagist\.org/?$}i', $this->url, $match)) {
            $this->url = $match['proto'].'://repo.packagist.org';
        }

$this->baseUrl = rtrim(Preg::replace('{(?:/[^/\\\\]+\.json)?(?:[?#].*)?$}', '', $this->url), '/');
        $this->io = $io;
        $this->cache = new Cache($io, $config->get('cache-repo-dir').'/'.Preg::replace('{[^a-z0-9.]}i', '-', Url::sanitize($this->url)), 'a-z0-9.$~');
        $this->cache->setReadOnly($config->get('cache-read-only'));
        $this->versionParser = new VersionParser();
        $this->loader = new ArrayLoader($this->versionParser);
        $this->httpDownloader = $httpDownloader;
        $this->eventDispatcher = $eventDispatcher;
        $this->repoConfig = $repoConfig;
        $this->loop = new Loop($this->httpDownloader);
    }

public function getRepoName()
    {
        return 'composer repo ('.Url::sanitize($this->url).')';
    }

public function getRepoConfig()
    {
        return $this->repoConfig;
    }

/**
     * @inheritDoc
     */
    public function findPackage($name, $constraint)
    {
        // this call initializes loadRootServerFile which is needed for the rest below to work
        $hasProviders = $this->hasProviders();

$name = strtolower($name);
        if (!$constraint instanceof ConstraintInterface) {
            $constraint = $this->versionParser->parseConstraints($constraint);
        }

if ($this->lazyProvidersUrl) {
            if ($this->hasPartialPackages() && isset($this->partialPackagesByName[$name])) {
                return $this->filterPackages($this->whatProvides($name), $constraint, true);
            }

if ($this->hasAvailablePackageList && !$this->lazyProvidersRepoContains($name)) {
                return null;
            }

$packages = $this->loadAsyncPackages(array($name => $constraint));

return reset($packages['packages']);
        }

if ($hasProviders) {
            foreach ($this->getProviderNames() as $providerName) {
                if ($name === $providerName) {
                    return $this->filterPackages($this->whatProvides($providerName), $constraint, true);
                }
            }

return null;
        }

return parent::findPackage($name, $constraint);
    }

/**
     * @inheritDoc
     */
    public function findPackages($name, $constraint = null)
    {
        // this call initializes loadRootServerFile which is needed for the rest below to work
        $hasProviders = $this->hasProviders();

$name = strtolower($name);
        if (null !== $constraint && !$constraint instanceof ConstraintInterface) {
            $constraint = $this->versionParser->parseConstraints($constraint);
        }

if ($this->hasAvailablePackageList && !$this->lazyProvidersRepoContains($name)) {
                return array();
            }

$result = $this->loadAsyncPackages(array($name => $constraint));

return $result['packages'];
        }

return array();
        }

return parent::findPackages($name, $constraint);
    }

/**
     * @param array<BasePackage> $packages
     * @param ConstraintInterface|null $constraint
     * @param bool $returnFirstMatch
     *
     * @return BasePackage|array<BasePackage>|null
     */
    private function filterPackages(array $packages, $constraint = null, $returnFirstMatch = false)
    {
        if (null === $constraint) {
            if ($returnFirstMatch) {
                return reset($packages);
            }

return $packages;
        }

$filteredPackages = array();

foreach ($packages as $package) {
            $pkgConstraint = new Constraint('==', $package->getVersion());

if ($constraint->matches($pkgConstraint)) {
                if ($returnFirstMatch) {
                    return $package;
                }

$filteredPackages[] = $package;
            }
        }

if ($returnFirstMatch) {
            return null;
        }

return $filteredPackages;
    }

public function getPackages()
    {
        $hasProviders = $this->hasProviders();

if ($this->lazyProvidersUrl) {
            if (is_array($this->availablePackages) && !$this->availablePackagePatterns) {
                $packageMap = array();
                foreach ($this->availablePackages as $name) {
                    $packageMap[$name] = new MatchAllConstraint();
                }

$result = $this->loadAsyncPackages($packageMap);

return array_values($result['packages']);
            }

throw new \LogicException('Composer repositories that have lazy providers and no available-packages list can not load the complete list of packages, use getPackageNames instead.');
        }

if ($hasProviders) {
            throw new \LogicException('Composer repositories that have providers can not load the complete list of packages, use getPackageNames instead.');
        }

return parent::getPackages();
    }

/**
     * @param string|null $packageFilter Package pattern filter which can include "*" as a wildcard
     *
     * @return string[]
     */
    public function getPackageNames($packageFilter = null)
    {
        $hasProviders = $this->hasProviders();

$filterResults =
            /**
             * @param list<string> $results
             * @return list<string>
             */
            function (array $results) {
                return $results;
            }
        ;
        if (null !== $packageFilter && '' !== $packageFilter) {
            $packageFilterRegex = BasePackage::packageNameToRegexp($packageFilter);
            $filterResults =
                /**
                 * @param list<string> $results
                 * @return list<string>
                 */
                function (array $results) use ($packageFilterRegex) {
                    /** @var list<string> $results */
                    return Preg::grep($packageFilterRegex, $results);
                }
            ;
        }

if ($this->lazyProvidersUrl) {
            if (is_array($this->availablePackages)) {
                return $filterResults(array_keys($this->availablePackages));
            }

if ($this->listUrl) {
                // no need to call $filterResults here as the $packageFilter is applied in the function itself
                return $this->loadPackageList($packageFilter);
            }

if ($this->hasPartialPackages() && $this->partialPackagesByName !== null) {
                return $filterResults(array_keys($this->partialPackagesByName));
            }

return array();
        }

if ($hasProviders) {
            return $filterResults($this->getProviderNames());
        }

$names = array();
        foreach ($this->getPackages() as $package) {
            $names[] = $package->getPrettyName();
        }

return $filterResults($names);
    }

/**
     * @return list<string>
     */
    private function getVendorNames()
    {
        $cacheKey = 'vendor-list.txt';
        $cacheAge = $this->cache->getAge($cacheKey);
        if (false !== $cacheAge && $cacheAge < 600 && ($cachedData = $this->cache->read($cacheKey)) !== false) {
            $cachedData = explode("\n", $cachedData);

return $cachedData;
        }

$names = $this->getPackageNames();

$uniques = array();
        foreach ($names as $name) {
            // @phpstan-ignore-next-line
            $uniques[substr($name, 0, strpos($name, '/'))] = true;
        }

$vendors = array_keys($uniques);

if (!$this->cache->isReadOnly()) {
            $this->cache->write($cacheKey, implode("\n", $vendors));
        }

return $vendors;
    }

/**
     * @param string|null $packageFilter
     * @return list<string>
     */
    private function loadPackageList($packageFilter = null)
    {
        if (null === $this->listUrl) {
            throw new \LogicException('Make sure to call loadRootServerFile before loadPackageList');
        }

$url = $this->listUrl;
        if (is_string($packageFilter) && $packageFilter !== '') {
            $url .= '?filter='.urlencode($packageFilter);
            $result = $this->httpDownloader->get($url, $this->options)->decodeJson();

return $result['packageNames'];
        }

$cacheKey = 'package-list.txt';
        $cacheAge = $this->cache->getAge($cacheKey);
        if (false !== $cacheAge && $cacheAge < 600 && ($cachedData = $this->cache->read($cacheKey)) !== false) {
            $cachedData = explode("\n", $cachedData);

return $cachedData;
        }

$result = $this->httpDownloader->get($url, $this->options)->decodeJson();
        if (!$this->cache->isReadOnly()) {
            $this->cache->write($cacheKey, implode("\n", $result['packageNames']));
        }

return $result['packageNames'];
    }

public function loadPackages(array $packageNameMap, array $acceptableStabilities, array $stabilityFlags, array $alreadyLoaded = array())
    {
        // this call initializes loadRootServerFile which is needed for the rest below to work
        $hasProviders = $this->hasProviders();

if (!$hasProviders && !$this->hasPartialPackages() && !$this->lazyProvidersUrl) {
            return parent::loadPackages($packageNameMap, $acceptableStabilities, $stabilityFlags, $alreadyLoaded);
        }

$packages = array();
        $namesFound = array();

if ($hasProviders || $this->hasPartialPackages()) {
            foreach ($packageNameMap as $name => $constraint) {
                $matches = array();

// if a repo has no providers but only partial packages and the partial packages are missing
                // then we don't want to call whatProvides as it would try to load from the providers and fail
                if (!$hasProviders && !isset($this->partialPackagesByName[$name])) {
                    continue;
                }

$candidates = $this->whatProvides($name, $acceptableStabilities, $stabilityFlags, $alreadyLoaded);
                foreach ($candidates as $candidate) {
                    if ($candidate->getName() !== $name) {
                        throw new \LogicException('whatProvides should never return a package with a different name than the requested one');
                    }
                    $namesFound[$name] = true;

if (!$constraint || $constraint->matches(new Constraint('==', $candidate->getVersion()))) {
                        $matches[spl_object_hash($candidate)] = $candidate;
                        if ($candidate instanceof AliasPackage && !isset($matches[spl_object_hash($candidate->getAliasOf())])) {
                            $matches[spl_object_hash($candidate->getAliasOf())] = $candidate->getAliasOf();
                        }
                    }
                }

// add aliases of matched packages even if they did not match the constraint
                foreach ($candidates as $candidate) {
                    if ($candidate instanceof AliasPackage) {
                        if (isset($matches[spl_object_hash($candidate->getAliasOf())])) {
                            $matches[spl_object_hash($candidate)] = $candidate;
                        }
                    }
                }
                $packages = array_merge($packages, $matches);

unset($packageNameMap[$name]);
            }
        }

if ($this->lazyProvidersUrl && count($packageNameMap)) {
            if ($this->hasAvailablePackageList) {
                foreach ($packageNameMap as $name => $constraint) {
                    if (!$this->lazyProvidersRepoContains(strtolower($name))) {
                        unset($packageNameMap[$name]);
                    }
                }
            }

$result = $this->loadAsyncPackages($packageNameMap, $acceptableStabilities, $stabilityFlags, $alreadyLoaded);
            $packages = array_merge($packages, $result['packages']);
            $namesFound = array_merge($namesFound, $result['namesFound']);
        }

return array('namesFound' => array_keys($namesFound), 'packages' => $packages);
    }

/**
     * @inheritDoc
     */
    public function search($query, $mode = 0, $type = null)
    {
        $this->loadRootServerFile(600);

if ($this->searchUrl && $mode === self::SEARCH_FULLTEXT) {
            $url = str_replace(array('%query%', '%type%'), array($query, $type), $this->searchUrl);

$search = $this->httpDownloader->get($url, $this->options)->decodeJson();

if (empty($search['results'])) {
                return array();
            }

$results = array();
            foreach ($search['results'] as $result) {
                // do not show virtual packages in results as they are not directly useful from a composer perspective
                if (!empty($result['virtual'])) {
                    continue;
                }

$results[] = $result;
            }

return $results;
        }

if ($mode === self::SEARCH_VENDOR) {
            $results = array();
            $regex = '{(?:'.implode('|', Preg::split('{\s+}', $query)).')}i';

$vendorNames = $this->getVendorNames();
            foreach (Preg::grep($regex, $vendorNames) as $name) {
                $results[] = array('name' => $name, 'description' => '');
            }

return $results;
        }

if ($this->hasProviders() || $this->lazyProvidersUrl) {
            // optimize search for "^foo/bar" where at least "^foo/" is present by loading this directly from the listUrl if present
            if (Preg::isMatch('{^\^(?P<query>(?P<vendor>[a-z0-9_.-]+)/[a-z0-9_.-]*)\*?$}i', $query, $match) && $this->listUrl !== null) {
                $url = $this->listUrl . '?vendor='.urlencode($match['vendor']).'&filter='.urlencode($match['query'].'*');
                $result = $this->httpDownloader->get($url, $this->options)->decodeJson();

$results = array();
                foreach ($result['packageNames'] as $name) {
                    $results[] = array('name' => $name, 'description' => '');
                }

return $results;
            }

$results = array();
            $regex = '{(?:'.implode('|', Preg::split('{\s+}', $query)).')}i';

$packageNames = $this->getPackageNames();
            foreach (Preg::grep($regex, $packageNames) as $name) {
                $results[] = array('name' => $name, 'description' => '');
            }

return $results;
        }

return parent::search($query, $mode);
    }

public function getProviders($packageName)
    {
        $this->loadRootServerFile();
        $result = array();

if ($this->providersApiUrl) {
            $apiResult = $this->httpDownloader->get(str_replace('%package%', $packageName, $this->providersApiUrl), $this->options)->decodeJson();

foreach ($apiResult['providers'] as $provider) {
                $result[$provider['name']] = $provider;
            }

return $result;
        }

if ($this->hasPartialPackages()) {
            if (!is_array($this->partialPackagesByName)) {
                throw new \LogicException('hasPartialPackages failed to initialize $this->partialPackagesByName');
            }
            foreach ($this->partialPackagesByName as $versions) {
                foreach ($versions as $candidate) {
                    if (isset($result[$candidate['name']]) || !isset($candidate['provide'][$packageName])) {
                        continue;
                    }
                    $result[$candidate['name']] = array(
                        'name' => $candidate['name'],
                        'description' => isset($candidate['description']) ? $candidate['description'] : '',
                        'type' => isset($candidate['type']) ? $candidate['type'] : '',
                    );
                }
            }
        }

if ($this->packages) {
            $result = array_merge($result, parent::getProviders($packageName));
        }

return $result;
    }

/**
     * @return string[]
     */
    private function getProviderNames()
    {
        $this->loadRootServerFile();

if (null === $this->providerListing) {
            $this->loadProviderListings($this->loadRootServerFile());
        }

if ($this->lazyProvidersUrl) {
            // Can not determine list of provided packages for lazy repositories
            return array();
        }

if ($this->providersUrl) {
            return array_keys($this->providerListing);
        }

return array();
    }

/**
     * @return void
     */
    protected function configurePackageTransportOptions(PackageInterface $package)
    {
        foreach ($package->getDistUrls() as $url) {
            if (strpos($url, $this->baseUrl) === 0) {
                $package->setTransportOptions($this->options);

return;
            }
        }
    }

/**
     * @return bool
     */
    private function hasProviders()
    {
        $this->loadRootServerFile();

return $this->hasProviders;
    }

/**
     * @param  string      $name package name
     * @param array<string, int>|null $acceptableStabilities
     * @phpstan-param array<string, BasePackage::STABILITY_*>|null $acceptableStabilities
     * @param array<string, int>|null $stabilityFlags an array of package name => BasePackage::STABILITY_* value
     * @phpstan-param array<string, BasePackage::STABILITY_*>|null $stabilityFlags
     * @param array<string, array<string, PackageInterface>> $alreadyLoaded
     *
     * @return array<string, BasePackage>
     */
    private function whatProvides($name, array $acceptableStabilities = null, array $stabilityFlags = null, array $alreadyLoaded = array())
    {
        $packagesSource = null;
        if (!$this->hasPartialPackages() || !isset($this->partialPackagesByName[$name])) {
            // skip platform packages, root package and composer-plugin-api
            if (PlatformRepository::isPlatformPackage($name) || '__root__' === $name) {
                return array();
            }

if (null === $this->providerListing) {
                $this->loadProviderListings($this->loadRootServerFile());
            }

$useLastModifiedCheck = false;
            if ($this->lazyProvidersUrl && !isset($this->providerListing[$name])) {
                $hash = null;
                $url = str_replace('%package%', $name, $this->lazyProvidersUrl);
                $cacheKey = 'provider-'.strtr($name, '/', '$').'.json';
                $useLastModifiedCheck = true;
            } elseif ($this->providersUrl) {
                // package does not exist in this repo
                if (!isset($this->providerListing[$name])) {
                    return array();
                }

$hash = $this->providerListing[$name]['sha256'];
                $url = str_replace(array('%package%', '%hash%'), array($name, $hash), $this->providersUrl);
                $cacheKey = 'provider-'.strtr($name, '/', '$').'.json';
            } else {
                return array();
            }

$packages = null;
            if (!$useLastModifiedCheck && $hash && $this->cache->sha256($cacheKey) === $hash) {
                $packages = json_decode($this->cache->read($cacheKey), true);
                $packagesSource = 'cached file ('.$cacheKey.' originating from '.Url::sanitize($url).')';
            } elseif ($useLastModifiedCheck) {
                if ($contents = $this->cache->read($cacheKey)) {
                    $contents = json_decode($contents, true);
                    // we already loaded some packages from this file, so assume it is fresh and avoid fetching it again
                    if (isset($alreadyLoaded[$name])) {
                        $packages = $contents;
                        $packagesSource = 'cached file ('.$cacheKey.' originating from '.Url::sanitize($url).')';
                    } elseif (isset($contents['last-modified'])) {
                        $response = $this->fetchFileIfLastModified($url, $cacheKey, $contents['last-modified']);
                        $packages = true === $response ? $contents : $response;
                        $packagesSource = true === $response ? 'cached file ('.$cacheKey.' originating from '.Url::sanitize($url).')' : 'downloaded file ('.Url::sanitize($url).')';
                    }
                }
            }

if (!$packages) {
                try {
                    $packages = $this->fetchFile($url, $cacheKey, $hash, $useLastModifiedCheck);
                    $packagesSource = 'downloaded file ('.Url::sanitize($url).')';
                } catch (TransportException $e) {
                    // 404s are acceptable for lazy provider repos
                    if ($this->lazyProvidersUrl && in_array($e->getStatusCode(), array(404, 499), true)) {
                        $packages = array('packages' => array());
                        $packagesSource = 'not-found file ('.Url::sanitize($url).')';
                        if ($e->getStatusCode() === 499) {
                            $this->io->error('<warning>' . $e->getMessage() . '</warning>');
                        }
                    } else {
                        throw $e;
                    }
                }
            }

$loadingPartialPackage = false;
        } else {
            $packages = array('packages' => array('versions' => $this->partialPackagesByName[$name]));
            $packagesSource = 'root file ('.Url::sanitize($this->getPackagesJsonUrl()).')';
            $loadingPartialPackage = true;
        }

$result = array();
        $versionsToLoad = array();
        foreach ($packages['packages'] as $versions) {
            foreach ($versions as $version) {
                $normalizedName = strtolower($version['name']);

// only load the actual named package, not other packages that might find themselves in the same file
                if ($normalizedName !== $name) {
                    continue;
                }

if (!$loadingPartialPackage && $this->hasPartialPackages() && isset($this->partialPackagesByName[$normalizedName])) {
                    continue;
                }

if (!isset($versionsToLoad[$version['uid']])) {
                    if (!isset($version['version_normalized'])) {
                        $version['version_normalized'] = $this->versionParser->normalize($version['version']);
                    } elseif ($version['version_normalized'] === VersionParser::DEFAULT_BRANCH_ALIAS) {
                        // handling of existing repos which need to remain composer v1 compatible, in case the version_normalized contained VersionParser::DEFAULT_BRANCH_ALIAS, we renormalize it
                        $version['version_normalized'] = $this->versionParser->normalize($version['version']);
                    }

// avoid loading packages which have already been loaded
                    if (isset($alreadyLoaded[$name][$version['version_normalized']])) {
                        continue;
                    }

if ($this->isVersionAcceptable(null, $normalizedName, $version, $acceptableStabilities, $stabilityFlags)) {
                        $versionsToLoad[$version['uid']] = $version;
                    }
                }
            }
        }

// load acceptable packages in the providers
        $loadedPackages = $this->createPackages($versionsToLoad, $packagesSource);
        $uids = array_keys($versionsToLoad);

foreach ($loadedPackages as $index => $package) {
            $package->setRepository($this);
            $uid = $uids[$index];

if ($package instanceof AliasPackage) {
                $aliased = $package->getAliasOf();
                $aliased->setRepository($this);

$result[$uid] = $aliased;
                $result[$uid.'-alias'] = $package;
            } else {
                $result[$uid] = $package;
            }
        }

return $result;
    }

/**
     * @inheritDoc
     */
    protected function initialize()
    {
        parent::initialize();

$repoData = $this->loadDataFromServer();

foreach ($this->createPackages($repoData, 'root file ('.Url::sanitize($this->getPackagesJsonUrl()).')') as $package) {
            $this->addPackage($package);
        }
    }

/**
     * Adds a new package to the repository
     *
     * @param PackageInterface $package
     */
    public function addPackage(PackageInterface $package)
    {
        parent::addPackage($package);
        $this->configurePackageTransportOptions($package);
    }

/**
     * @param array<string, ConstraintInterface|null> $packageNames array of package name => ConstraintInterface|null - if a constraint is provided, only packages matching it will be loaded
     * @param array<string, int>|null $acceptableStabilities
     * @phpstan-param array<string, BasePackage::STABILITY_*>|null $acceptableStabilities
     * @param array<string, int>|null $stabilityFlags an array of package name => BasePackage::STABILITY_* value
     * @phpstan-param array<string, BasePackage::STABILITY_*>|null $stabilityFlags
     * @param array<string, array<string, PackageInterface>> $alreadyLoaded
     *
     * @return array{namesFound: array<string, true>, packages: array<string, BasePackage>}
     */
    private function loadAsyncPackages(array $packageNames, array $acceptableStabilities = null, array $stabilityFlags = null, array $alreadyLoaded = array())
    {
        $this->loadRootServerFile();

$packages = array();
        $namesFound = array();
        $promises = array();
        $repo = $this;

if (!$this->lazyProvidersUrl) {
            throw new \LogicException('loadAsyncPackages only supports v2 protocol composer repos with a metadata-url');
        }

// load ~dev versions of the packages as well if needed
        foreach ($packageNames as $name => $constraint) {
            if ($acceptableStabilities === null || $stabilityFlags === null || StabilityFilter::isPackageAcceptable($acceptableStabilities, $stabilityFlags, array($name), 'dev')) {
                $packageNames[$name.'~dev'] = $constraint;
            }
            // if only dev stability is requested, we skip loading the non dev file
            if (isset($acceptableStabilities['dev']) && count($acceptableStabilities) === 1 && count($stabilityFlags) === 0) {
                unset($packageNames[$name]);
            }
        }

foreach ($packageNames as $name => $constraint) {
            $name = strtolower($name);

$realName = Preg::replace('{~dev$}', '', $name);
            // skip platform packages, root package and composer-plugin-api
            if (PlatformRepository::isPlatformPackage($realName) || '__root__' === $realName) {
                continue;
            }

$url = str_replace('%package%', $name, $this->lazyProvidersUrl);
            $cacheKey = 'provider-'.strtr($name, '/', '~').'.json';

$lastModified = null;
            if ($contents = $this->cache->read($cacheKey)) {
                $contents = json_decode($contents, true);
                $lastModified = isset($contents['last-modified']) ? $contents['last-modified'] : null;
            }

$promises[] = $this->asyncFetchFile($url, $cacheKey, $lastModified)
                ->then(function ($response) use (&$packages, &$namesFound, $url, $cacheKey, $contents, $realName, $constraint, $repo, $acceptableStabilities, $stabilityFlags, $alreadyLoaded) {
                    $packagesSource = 'downloaded file ('.Url::sanitize($url).')';

if (true === $response) {
                        $packagesSource = 'cached file ('.$cacheKey.' originating from '.Url::sanitize($url).')';
                        $response = $contents;
                    }

if (!isset($response['packages'][$realName])) {
                        return;
                    }

$versions = $response['packages'][$realName];

if (isset($response['minified']) && $response['minified'] === 'composer/2.0') {
                        $versions = MetadataMinifier::expand($versions);
                    }

$namesFound[$realName] = true;
                    $versionsToLoad = array();
                    foreach ($versions as $version) {
                        if (!isset($version['version_normalized'])) {
                            $version['version_normalized'] = $repo->versionParser->normalize($version['version']);
                        } elseif ($version['version_normalized'] === VersionParser::DEFAULT_BRANCH_ALIAS) {
                            // handling of existing repos which need to remain composer v1 compatible, in case the version_normalized contained VersionParser::DEFAULT_BRANCH_ALIAS, we renormalize it
                            $version['version_normalized'] = $repo->versionParser->normalize($version['version']);
                        }

// avoid loading packages which have already been loaded
                        if (isset($alreadyLoaded[$realName][$version['version_normalized']])) {
                            continue;
                        }

if ($repo->isVersionAcceptable($constraint, $realName, $version, $acceptableStabilities, $stabilityFlags)) {
                            $versionsToLoad[] = $version;
                        }
                    }

$loadedPackages = $repo->createPackages($versionsToLoad, $packagesSource);
                    foreach ($loadedPackages as $package) {
                        $package->setRepository($repo);
                        $packages[spl_object_hash($package)] = $package;

if ($package instanceof AliasPackage && !isset($packages[spl_object_hash($package->getAliasOf())])) {
                            $package->getAliasOf()->setRepository($repo);
                            $packages[spl_object_hash($package->getAliasOf())] = $package->getAliasOf();
                        }
                    }
                });
        }

$this->loop->wait($promises);

return array('namesFound' => $namesFound, 'packages' => $packages);
        // RepositorySet should call loadMetadata, getMetadata when all promises resolved, then metadataComplete when done so we can GC the loaded json and whatnot then as needed
    }

/**
     * TODO v3 should make this private once we can drop PHP 5.3 support
     *
     * @private
     *
     * @param ConstraintInterface|null $constraint
     * @param string $name package name (must be lowercased already)
     * @param array<string, mixed> $versionData
     * @param array<string, int>|null $acceptableStabilities
     * @phpstan-param array<string, BasePackage::STABILITY_*>|null $acceptableStabilities
     * @param array<string, int>|null $stabilityFlags an array of package name => BasePackage::STABILITY_* value
     * @phpstan-param array<string, BasePackage::STABILITY_*>|null $stabilityFlags
     *
     * @return bool
     */
    public function isVersionAcceptable($constraint, $name, $versionData, array $acceptableStabilities = null, array $stabilityFlags = null)
    {
        $versions = array($versionData['version_normalized']);

if ($alias = $this->loader->getBranchAlias($versionData)) {
            $versions[] = $alias;
        }

foreach ($versions as $version) {
            if (null !== $acceptableStabilities && null !== $stabilityFlags && !StabilityFilter::isPackageAcceptable($acceptableStabilities, $stabilityFlags, array($name), VersionParser::parseStability($version))) {
                continue;
            }

if ($constraint && !CompilingMatcher::match($constraint, Constraint::OP_EQ, $version)) {
                continue;
            }

return true;
        }

return false;
    }

/**
     * @return string
     */
    private function getPackagesJsonUrl()
    {
        $jsonUrlParts = parse_url($this->url);

if (isset($jsonUrlParts['path']) && false !== strpos($jsonUrlParts['path'], '.json')) {
            return $this->url;
        }

return $this->url . '/packages.json';
    }

/**
     * @param int|null $rootMaxAge
     * @return array<string, mixed>
     */
    protected function loadRootServerFile($rootMaxAge = null)
    {
        if (null !== $this->rootData) {
            return $this->rootData;
        }

if (!extension_loaded('openssl') && strpos($this->url, 'https') === 0) {
            throw new \RuntimeException('You must enable the openssl extension in your php.ini to load information from '.$this->url);
        }

if ($cachedData = $this->cache->read('packages.json')) {
            $cachedData = json_decode($cachedData, true);
            if ($rootMaxAge !== null && ($age = $this->cache->getAge('packages.json')) !== false && $age <= $rootMaxAge) {
                $data = $cachedData;
            } elseif (isset($cachedData['last-modified'])) {
                $response = $this->fetchFileIfLastModified($this->getPackagesJsonUrl(), 'packages.json', $cachedData['last-modified']);
                $data = true === $response ? $cachedData : $response;
            }
        }

if (!isset($data)) {
            $data = $this->fetchFile($this->getPackagesJsonUrl(), 'packages.json', null, true);
        }

if (!empty($data['notify-batch'])) {
            $this->notifyUrl = $this->canonicalizeUrl($data['notify-batch']);
        } elseif (!empty($data['notify'])) {
            $this->notifyUrl = $this->canonicalizeUrl($data['notify']);
        }

if (!empty($data['search'])) {
            $this->searchUrl = $this->canonicalizeUrl($data['search']);
        }

if (!empty($data['mirrors'])) {
            foreach ($data['mirrors'] as $mirror) {
                if (!empty($mirror['git-url'])) {
                    $this->sourceMirrors['git'][] = array('url' => $mirror['git-url'], 'preferred' => !empty($mirror['preferred']));
                }
                if (!empty($mirror['hg-url'])) {
                    $this->sourceMirrors['hg'][] = array('url' => $mirror['hg-url'], 'preferred' => !empty($mirror['preferred']));
                }
                if (!empty($mirror['dist-url'])) {
                    $this->distMirrors[] = array(
                        'url' => $this->canonicalizeUrl($mirror['dist-url']),
                        'preferred' => !empty($mirror['preferred']),
                    );
                }
            }
        }

if (!empty($data['providers-lazy-url'])) {
            $this->lazyProvidersUrl = $this->canonicalizeUrl($data['providers-lazy-url']);
            $this->hasProviders = true;

$this->hasPartialPackages = !empty($data['packages']) && is_array($data['packages']);
        }

// metadata-url indicates V2 repo protocol so it takes over from all the V1 types
        // V2 only has lazyProviders and possibly partial packages, but no ability to process anything else,
        // V2 also supports async loading
        if (!empty($data['metadata-url'])) {
            $this->lazyProvidersUrl = $this->canonicalizeUrl($data['metadata-url']);
            $this->providersUrl = null;
            $this->hasProviders = false;
            $this->hasPartialPackages = !empty($data['packages']) && is_array($data['packages']);
            $this->allowSslDowngrade = false;

// provides a list of package names that are available in this repo
            // this disables lazy-provider behavior in the sense that if a list is available we assume it is finite and won't search for other packages in that repo
            // while if no list is there lazyProvidersUrl is used when looking for any package name to see if the repo knows it
            if (!empty($data['available-packages'])) {
                $availPackages = array_map('strtolower', $data['available-packages']);
                $this->availablePackages = array_combine($availPackages, $availPackages);
                $this->hasAvailablePackageList = true;
            }

// Provides a list of package name patterns (using * wildcards to match any substring, e.g. "vendor/*") that are available in this repo
            // Disables lazy-provider behavior as with available-packages, but may allow much more compact expression of packages covered by this repository.
            // Over-specifying covered packages is safe, but may result in increased traffic to your repository.
            if (!empty($data['available-package-patterns'])) {
                $this->availablePackagePatterns = array_map(function ($pattern) {
                    return BasePackage::packageNameToRegexp($pattern);
                }, $data['available-package-patterns']);
                $this->hasAvailablePackageList = true;
            }

// Remove legacy keys as most repos need to be compatible with Composer v1
            // as well but we are not interested in the old format anymore at this point
            unset($data['providers-url'], $data['providers'], $data['providers-includes']);
        }

if ($this->allowSslDowngrade) {
            $this->url = str_replace('https://', 'http://', $this->url);
            $this->baseUrl = str_replace('https://', 'http://', $this->baseUrl);
        }

if (!empty($data['providers-url'])) {
            $this->providersUrl = $this->canonicalizeUrl($data['providers-url']);
            $this->hasProviders = true;
        }

if (!empty($data['list'])) {
            $this->listUrl = $this->canonicalizeUrl($data['list']);
        }

if (!empty($data['providers']) || !empty($data['providers-includes'])) {
            $this->hasProviders = true;
        }

if (!empty($data['providers-api'])) {
            $this->providersApiUrl = $this->canonicalizeUrl($data['providers-api']);
        }

return $this->rootData = $data;
    }

/**
     * @param string $url
     *
     * @return string
     */
    private function canonicalizeUrl($url)
    {
        if ('/' === $url[0]) {
            if (Preg::isMatch('{^[^:]++://[^/]*+}', $this->url, $matches)) {
                return $matches[0] . $url;
            }

return $this->url;
        }

return $url;
    }

/**
     * @return mixed[]
     */
    private function loadDataFromServer()
    {
        $data = $this->loadRootServerFile();

return $this->loadIncludes($data);
    }

/**
     * @return bool
     */
    private function hasPartialPackages()
    {
        if ($this->hasPartialPackages && null === $this->partialPackagesByName) {
            $this->initializePartialPackages();
        }

return $this->hasPartialPackages;
    }

/**
     * @param array{providers?: mixed[], provider-includes?: mixed[]} $data
     *
     * @return void
     */
    private function loadProviderListings($data)
    {
        if (isset($data['providers'])) {
            if (!is_array($this->providerListing)) {
                $this->providerListing = array();
            }
            $this->providerListing = array_merge($this->providerListing, $data['providers']);
        }

if ($this->providersUrl && isset($data['provider-includes'])) {
            $includes = $data['provider-includes'];
            foreach ($includes as $include => $metadata) {
                $url = $this->baseUrl . '/' . str_replace('%hash%', $metadata['sha256'], $include);
                $cacheKey = str_replace(array('%hash%','$'), '', $include);
                if ($this->cache->sha256($cacheKey) === $metadata['sha256']) {
                    $includedData = json_decode($this->cache->read($cacheKey), true);
                } else {
                    $includedData = $this->fetchFile($url, $cacheKey, $metadata['sha256']);
                }

$this->loadProviderListings($includedData);
            }
        }
    }

/**
     * @param mixed[] $data
     *
     * @return mixed[]
     */
    private function loadIncludes($data)
    {
        $packages = array();

// legacy repo handling
        if (!isset($data['packages']) && !isset($data['includes'])) {
            foreach ($data as $pkg) {
                if (isset($pkg['versions']) && is_array($pkg['versions'])) {
                    foreach ($pkg['versions'] as $metadata) {
                        $packages[] = $metadata;
                    }
                }
            }

return $packages;
        }

if (isset($data['packages'])) {
            foreach ($data['packages'] as $package => $versions) {
                foreach ($versions as $version => $metadata) {
                    $packages[] = $metadata;
                }
            }
        }

if (isset($data['includes'])) {
            foreach ($data['includes'] as $include => $metadata) {
                if (isset($metadata['sha1']) && $this->cache->sha1((string) $include) === $metadata['sha1']) {
                    $includedData = json_decode($this->cache->read((string) $include), true);
                } else {
                    $includedData = $this->fetchFile($include);
                }
                $packages = array_merge($packages, $this->loadIncludes($includedData));
            }
        }

return $packages;
    }

/**
     * TODO v3 should make this private once we can drop PHP 5.3 support
     * @private
     *
     * @param mixed[] $packages
     * @param string|null $source
     *
     * @return list<CompletePackage|CompleteAliasPackage>
     */
    public function createPackages(array $packages, $source = null)
    {
        if (!$packages) {
            return array();
        }

try {
            foreach ($packages as &$data) {
                if (!isset($data['notification-url'])) {
                    $data['notification-url'] = $this->notifyUrl;
                }
            }

$packageInstances = $this->loader->loadPackages($packages);

foreach ($packageInstances as $package) {
                if (isset($this->sourceMirrors[$package->getSourceType()])) {
                    $package->setSourceMirrors($this->sourceMirrors[$package->getSourceType()]);
                }
                $package->setDistMirrors($this->distMirrors);
                $this->configurePackageTransportOptions($package);
            }

return $packageInstances;
        } catch (\Exception $e) {
            throw new \RuntimeException('Could not load packages '.(isset($packages[0]['name']) ? $packages[0]['name'] : json_encode($packages)).' in '.$this->getRepoName().($source ? ' from '.$source : '').': ['.get_class($e).'] '.$e->getMessage(), 0, $e);
        }
    }

/**
     * @param string $filename
     * @param string|null $cacheKey
     * @param string|null $sha256
     * @param bool $storeLastModifiedTime
     *
     * @return array<mixed>
     */
    protected function fetchFile($filename, $cacheKey = null, $sha256 = null, $storeLastModifiedTime = false)
    {
        if (null === $cacheKey) {
            $cacheKey = $filename;
            $filename = $this->baseUrl.'/'.$filename;
        }

// url-encode $ signs in URLs as bad proxies choke on them
        if (($pos = strpos($filename, '$')) && Preg::isMatch('{^https?://}i', $filename)) {
            $filename = substr($filename, 0, $pos) . '%24' . substr($filename, $pos + 1);
        }

$retries = 3;
        while ($retries--) {
            try {
                $options = $this->options;
                if ($this->eventDispatcher) {
                    $preFileDownloadEvent = new PreFileDownloadEvent(PluginEvents::PRE_FILE_DOWNLOAD, $this->httpDownloader, $filename, 'metadata', array('repository' => $this));
                    $preFileDownloadEvent->setTransportOptions($this->options);
                    $this->eventDispatcher->dispatch($preFileDownloadEvent->getName(), $preFileDownloadEvent);
                    $filename = $preFileDownloadEvent->getProcessedUrl();
                    $options = $preFileDownloadEvent->getTransportOptions();
                }

$response = $this->httpDownloader->get($filename, $options);
                $json = (string) $response->getBody();
                if ($sha256 && $sha256 !== hash('sha256', $json)) {
                    // undo downgrade before trying again if http seems to be hijacked or modifying content somehow
                    if ($this->allowSslDowngrade) {
                        $this->url = str_replace('http://', 'https://', $this->url);
                        $this->baseUrl = str_replace('http://', 'https://', $this->baseUrl);
                        $filename = str_replace('http://', 'https://', $filename);
                    }

if ($retries > 0) {
                        usleep(100000);

continue;
                    }

// TODO use scarier wording once we know for sure it doesn't do false positives anymore
                    throw new RepositorySecurityException('The contents of '.$filename.' do not match its signature. This could indicate a man-in-the-middle attack or e.g. antivirus software corrupting files. Try running composer again and report this if you think it is a mistake.');
                }

if ($this->eventDispatcher) {
                    $postFileDownloadEvent = new PostFileDownloadEvent(PluginEvents::POST_FILE_DOWNLOAD, null, $sha256, $filename, 'metadata', array('response' => $response, 'repository' => $this));
                    $this->eventDispatcher->dispatch($postFileDownloadEvent->getName(), $postFileDownloadEvent);
                }

$data = $response->decodeJson();
                HttpDownloader::outputWarnings($this->io, $this->url, $data);

if ($cacheKey && !$this->cache->isReadOnly()) {
                    if ($storeLastModifiedTime) {
                        $lastModifiedDate = $response->getHeader('last-modified');
                        if ($lastModifiedDate) {
                            $data['last-modified'] = $lastModifiedDate;
                            $json = JsonFile::encode($data, 0);
                        }
                    }
                    $this->cache->write($cacheKey, $json);
                }

$response->collect();

break;
            } catch (\Exception $e) {
                if ($e instanceof \LogicException) {
                    throw $e;
                }

if ($e instanceof TransportException && $e->getStatusCode() === 404) {
                    throw $e;
                }

if ($e instanceof RepositorySecurityException) {
                    throw $e;
                }

if ($cacheKey && ($contents = $this->cache->read($cacheKey))) {
                    if (!$this->degradedMode) {
                        $this->io->writeError('<warning>'.$this->url.' could not be fully loaded ('.$e->getMessage().'), package information was loaded from the local cache and may be out of date</warning>');
                    }
                    $this->degradedMode = true;
                    $data = JsonFile::parseJson($contents, $this->cache->getRoot().$cacheKey);

break;
                }

throw $e;
            }
        }

if (!isset($data)) {
            throw new \LogicException("ComposerRepository: Undefined \$data. Please report at https://github.com/composer/composer/issues/new.");
        }

return $data;
    }

/**
     * @param string $filename
     * @param string $cacheKey
     * @param string $lastModifiedTime
     *
     * @return array<mixed>|true
     */
    private function fetchFileIfLastModified($filename, $cacheKey, $lastModifiedTime)
    {
        try {
            $options = $this->options;
            if ($this->eventDispatcher) {
                $preFileDownloadEvent = new PreFileDownloadEvent(PluginEvents::PRE_FILE_DOWNLOAD, $this->httpDownloader, $filename, 'metadata', array('repository' => $this));
                $preFileDownloadEvent->setTransportOptions($this->options);
                $this->eventDispatcher->dispatch($preFileDownloadEvent->getName(), $preFileDownloadEvent);
                $filename = $preFileDownloadEvent->getProcessedUrl();
                $options = $preFileDownloadEvent->getTransportOptions();
            }

if (isset($options['http']['header'])) {
                $options['http']['header'] = (array) $options['http']['header'];
            }
            $options['http']['header'][] = 'If-Modified-Since: '.$lastModifiedTime;
            $response = $this->httpDownloader->get($filename, $options);
            $json = (string) $response->getBody();
            if ($json === '' && $response->getStatusCode() === 304) {
                return true;
            }

if ($this->eventDispatcher) {
                $postFileDownloadEvent = new PostFileDownloadEvent(PluginEvents::POST_FILE_DOWNLOAD, null, null, $filename, 'metadata', array('response' => $response, 'repository' => $this));
                $this->eventDispatcher->dispatch($postFileDownloadEvent->getName(), $postFileDownloadEvent);
            }

$data = $response->decodeJson();
            HttpDownloader::outputWarnings($this->io, $this->url, $data);

$lastModifiedDate = $response->getHeader('last-modified');
            $response->collect();
            if ($lastModifiedDate) {
                $data['last-modified'] = $lastModifiedDate;
                $json = JsonFile::encode($data, 0);
            }
            if (!$this->cache->isReadOnly()) {
                $this->cache->write($cacheKey, $json);
            }

return $data;
        } catch (\Exception $e) {
            if ($e instanceof \LogicException) {
                throw $e;
            }

if ($e instanceof TransportException && $e->getStatusCode() === 404) {
                throw $e;
            }

if (!$this->degradedMode) {
                $this->io->writeError('<warning>'.$this->url.' could not be fully loaded ('.$e->getMessage().'), package information was loaded from the local cache and may be out of date</warning>');
            }
            $this->degradedMode = true;

return true;
        }
    }

/**
     * @param string $filename
     * @param string $cacheKey
     * @param string|null $lastModifiedTime
     *
     * @return \React\Promise\PromiseInterface
     */
    private function asyncFetchFile($filename, $cacheKey, $lastModifiedTime = null)
    {
        if (isset($this->packagesNotFoundCache[$filename])) {
            return \React\Promise\resolve(array('packages' => array()));
        }

if (isset($this->freshMetadataUrls[$filename]) && $lastModifiedTime) {
            // make it look like we got a 304 response
            return \React\Promise\resolve(true);
        }

$httpDownloader = $this->httpDownloader;
        $options = $this->options;
        if ($this->eventDispatcher) {
            $preFileDownloadEvent = new PreFileDownloadEvent(PluginEvents::PRE_FILE_DOWNLOAD, $this->httpDownloader, $filename, 'metadata', array('repository' => $this));
            $preFileDownloadEvent->setTransportOptions($this->options);
            $this->eventDispatcher->dispatch($preFileDownloadEvent->getName(), $preFileDownloadEvent);
            $filename = $preFileDownloadEvent->getProcessedUrl();
            $options = $preFileDownloadEvent->getTransportOptions();
        }

if ($lastModifiedTime) {
            if (isset($options['http']['header'])) {
                $options['http']['header'] = (array) $options['http']['header'];
            }
            $options['http']['header'][] = 'If-Modified-Since: '.$lastModifiedTime;
        }

$io = $this->io;
        $url = $this->url;
        $cache = $this->cache;
        $degradedMode = &$this->degradedMode;
        $eventDispatcher = $this->eventDispatcher;
        $repo = $this;

$accept = function ($response) use ($io, $url, $filename, $cache, $cacheKey, $eventDispatcher, $repo) {
            // package not found is acceptable for a v2 protocol repository
            if ($response->getStatusCode() === 404) {
                $repo->packagesNotFoundCache[$filename] = true;

return array('packages' => array());
            }

$json = (string) $response->getBody();
            if ($json === '' && $response->getStatusCode() === 304) {
                $repo->freshMetadataUrls[$filename] = true;

return true;
            }

if ($eventDispatcher) {
                $postFileDownloadEvent = new PostFileDownloadEvent(PluginEvents::POST_FILE_DOWNLOAD, null, null, $filename, 'metadata', array('response' => $response, 'repository' => $repo));
                $eventDispatcher->dispatch($postFileDownloadEvent->getName(), $postFileDownloadEvent);
            }

$data = $response->decodeJson();
            HttpDownloader::outputWarnings($io, $url, $data);

$lastModifiedDate = $response->getHeader('last-modified');
            $response->collect();
            if ($lastModifiedDate) {
                $data['last-modified'] = $lastModifiedDate;
                $json = JsonFile::encode($data, JsonFile::JSON_UNESCAPED_SLASHES | JsonFile::JSON_UNESCAPED_UNICODE);
            }
            if (!$cache->isReadOnly()) {
                $cache->write($cacheKey, $json);
            }
            $repo->freshMetadataUrls[$filename] = true;

return $data;
        };

$reject = function ($e) use ($filename, $accept, $io, $url, &$degradedMode, $repo, $lastModifiedTime) {
            if ($e instanceof TransportException && $e->getStatusCode() === 404) {
                $repo->packagesNotFoundCache[$filename] = true;

return false;
            }

if (!$degradedMode) {
                $io->writeError('<warning>'.$url.' could not be fully loaded ('.$e->getMessage().'), package information was loaded from the local cache and may be out of date</warning>');
            }
            $degradedMode = true;

// if the file is in the cache, we fake a 304 Not Modified to allow the process to continue
            if ($lastModifiedTime) {
                return $accept(new Response(array('url' => $url), 304, array(), ''));
            }

// special error code returned when network is being artificially disabled
            if ($e instanceof TransportException && $e->getStatusCode() === 499) {
                return $accept(new Response(array('url' => $url), 404, array(), ''));
            }

throw $e;
        };

return $httpDownloader->add($filename, $options)->then($accept, $reject);
    }

/**
     * This initializes the packages key of a partial packages.json that contain some packages inlined + a providers-lazy-url
     *
     * This should only be called once
     *
     * @return void
     */
    private function initializePartialPackages()
    {
        $rootData = $this->loadRootServerFile();

$this->partialPackagesByName = array();
        foreach ($rootData['packages'] as $package => $versions) {
            foreach ($versions as $version) {
                $this->partialPackagesByName[strtolower($version['name'])][] = $version;
            }
        }

// wipe rootData as it is fully consumed at this point and this saves some memory
        $this->rootData = true;
    }

/**
     * Checks if the package name is present in this lazy providers repo
     *
     * @param  string $name
     * @return bool   true if the package name is present in availablePackages or matched by availablePackagePatterns
     */
    protected function lazyProvidersRepoContains($name)
    {
        if (!$this->hasAvailablePackageList) {
            throw new \LogicException('lazyProvidersRepoContains should not be called unless hasAvailablePackageList is true');
        }

if (is_array($this->availablePackages) && isset($this->availablePackages[$name])) {
            return true;
        }

if (is_array($this->availablePackagePatterns)) {
            foreach ($this->availablePackagePatterns as $providerRegex) {
                if (Preg::isMatch($providerRegex, $name)) {
                    return true;
                }
            }
        }

return false;
    }
}
<?php

namespace Composer\Repository;

/**
 * Lock array repository.
 *
 * Regular array repository, only uses a different type to identify the lock file as the source of info
 *
 * @author Nils Adermann <naderman@naderman.de>
 */
class LockArrayRepository extends ArrayRepository
{
    public function getRepoName()
    {
        return 'lock repo';
    }
}
<?php

namespace Composer\Repository;

/**
 * Installed array repository.
 *
 * This is used as an in-memory InstalledRepository mostly for testing purposes
 *
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class InstalledArrayRepository extends WritableArrayRepository implements InstalledRepositoryInterface
{
    public function getRepoName()
    {
        return 'installed '.parent::getRepoName();
    }

/**
     * @inheritDoc
     */
    public function isFresh()
    {
        // this is not a completely correct implementation but there is no way to
        // distinguish an empty repo and a newly created one given this is all in-memory
        return $this->count() === 0;
    }
}
<?php

namespace Composer\Repository;

use Composer\Package\RootPackageInterface;

/**
 * Root package repository.
 *
 * This is used for serving the RootPackage inside an in-memory InstalledRepository
 *
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class RootPackageRepository extends ArrayRepository
{
    public function __construct(RootPackageInterface $package)
    {
        parent::__construct(array($package));
    }

public function getRepoName()
    {
        return 'root package repo';
    }
}
<?php

namespace Composer\Repository;

use Composer\Downloader\TransportException;
use Composer\Pcre\Preg;
use Composer\Repository\Vcs\VcsDriverInterface;
use Composer\Package\Version\VersionParser;
use Composer\Package\Loader\ArrayLoader;
use Composer\Package\Loader\ValidatingArrayLoader;
use Composer\Package\Loader\InvalidPackageException;
use Composer\Package\Loader\LoaderInterface;
use Composer\EventDispatcher\EventDispatcher;
use Composer\Util\ProcessExecutor;
use Composer\Util\HttpDownloader;
use Composer\Util\Url;
use Composer\Semver\Constraint\Constraint;
use Composer\IO\IOInterface;
use Composer\Config;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class VcsRepository extends ArrayRepository implements ConfigurableRepositoryInterface
{
    /** @var string */
    protected $url;
    /** @var ?string */
    protected $packageName;
    /** @var bool */
    protected $isVerbose;
    /** @var bool */
    protected $isVeryVerbose;
    /** @var IOInterface */
    protected $io;
    /** @var Config */
    protected $config;
    /** @var VersionParser */
    protected $versionParser;
    /** @var string */
    protected $type;
    /** @var ?LoaderInterface */
    protected $loader;
    /** @var array<string, mixed> */
    protected $repoConfig;
    /** @var HttpDownloader */
    protected $httpDownloader;
    /** @var ProcessExecutor */
    protected $processExecutor;
    /** @var bool */
    protected $branchErrorOccurred = false;
    /** @var array<string, class-string<VcsDriverInterface>> */
    private $drivers;
    /** @var ?VcsDriverInterface */
    private $driver;
    /** @var ?VersionCacheInterface */
    private $versionCache;
    /** @var string[] */
    private $emptyReferences = array();
    /** @var array<'tags'|'branches', array<string, TransportException>> */
    private $versionTransportExceptions = array();

/**
     * @param array{url: string, type?: string}&array<string, mixed> $repoConfig
     * @param array<string, class-string<VcsDriverInterface>>|null $drivers
     */
    public function __construct(array $repoConfig, IOInterface $io, Config $config, HttpDownloader $httpDownloader, EventDispatcher $dispatcher = null, ProcessExecutor $process = null, array $drivers = null, VersionCacheInterface $versionCache = null)
    {
        parent::__construct();
        $this->drivers = $drivers ?: array(
            'github' => 'Composer\Repository\Vcs\GitHubDriver',
            'gitlab' => 'Composer\Repository\Vcs\GitLabDriver',
            'bitbucket' => 'Composer\Repository\Vcs\GitBitbucketDriver',
            'git-bitbucket' => 'Composer\Repository\Vcs\GitBitbucketDriver',
            'git' => 'Composer\Repository\Vcs\GitDriver',
            'hg' => 'Composer\Repository\Vcs\HgDriver',
            'perforce' => 'Composer\Repository\Vcs\PerforceDriver',
            'fossil' => 'Composer\Repository\Vcs\FossilDriver',
            // svn must be last because identifying a subversion server for sure is practically impossible
            'svn' => 'Composer\Repository\Vcs\SvnDriver',
        );

$this->url = $repoConfig['url'];
        $this->io = $io;
        $this->type = isset($repoConfig['type']) ? $repoConfig['type'] : 'vcs';
        $this->isVerbose = $io->isVerbose();
        $this->isVeryVerbose = $io->isVeryVerbose();
        $this->config = $config;
        $this->repoConfig = $repoConfig;
        $this->versionCache = $versionCache;
        $this->httpDownloader = $httpDownloader;
        $this->processExecutor = $process ?: new ProcessExecutor($io);
    }

public function getRepoName()
    {
        $driverClass = get_class($this->getDriver());
        $driverType = array_search($driverClass, $this->drivers);
        if (!$driverType) {
            $driverType = $driverClass;
        }

return 'vcs repo ('.$driverType.' '.Url::sanitize($this->url).')';
    }

public function getRepoConfig()
    {
        return $this->repoConfig;
    }

/**
     * @return void
     */
    public function setLoader(LoaderInterface $loader)
    {
        $this->loader = $loader;
    }

/**
     * @return VcsDriverInterface|null
     */
    public function getDriver()
    {
        if ($this->driver) {
            return $this->driver;
        }

if (isset($this->drivers[$this->type])) {
            $class = $this->drivers[$this->type];
            $this->driver = new $class($this->repoConfig, $this->io, $this->config, $this->httpDownloader, $this->processExecutor);
            $this->driver->initialize();

return $this->driver;
        }

foreach ($this->drivers as $driver) {
            if ($driver::supports($this->io, $this->config, $this->url)) {
                $this->driver = new $driver($this->repoConfig, $this->io, $this->config, $this->httpDownloader, $this->processExecutor);
                $this->driver->initialize();

return $this->driver;
            }
        }

foreach ($this->drivers as $driver) {
            if ($driver::supports($this->io, $this->config, $this->url, true)) {
                $this->driver = new $driver($this->repoConfig, $this->io, $this->config, $this->httpDownloader, $this->processExecutor);
                $this->driver->initialize();

return $this->driver;
            }
        }

return null;
    }

/**
     * @return bool
     */
    public function hadInvalidBranches()
    {
        return $this->branchErrorOccurred;
    }

/**
     * @return string[]
     */
    public function getEmptyReferences()
    {
        return $this->emptyReferences;
    }

/**
     * @return array<'tags'|'branches', array<string, TransportException>>
     */
    public function getVersionTransportExceptions()
    {
        return $this->versionTransportExceptions;
    }

protected function initialize()
    {
        parent::initialize();

$isVerbose = $this->isVerbose;
        $isVeryVerbose = $this->isVeryVerbose;

$driver = $this->getDriver();
        if (!$driver) {
            throw new \InvalidArgumentException('No driver found to handle VCS repository '.$this->url);
        }

$this->versionParser = new VersionParser;
        if (!$this->loader) {
            $this->loader = new ArrayLoader($this->versionParser);
        }

$hasRootIdentifierComposerJson = false;
        try {
            $hasRootIdentifierComposerJson = $driver->hasComposerFile($driver->getRootIdentifier());
            if ($hasRootIdentifierComposerJson) {
                $data = $driver->getComposerInformation($driver->getRootIdentifier());
                $this->packageName = !empty($data['name']) ? $data['name'] : null;
            }
        } catch (\Exception $e) {
            if ($e instanceof TransportException && $this->shouldRethrowTransportException($e)) {
                throw $e;
            }

if ($isVeryVerbose) {
                $this->io->writeError('<error>Skipped parsing '.$driver->getRootIdentifier().', '.$e->getMessage().'</error>');
            }
        }

foreach ($driver->getTags() as $tag => $identifier) {
            $tag = (string) $tag;
            $msg = 'Reading composer.json of <info>' . ($this->packageName ?: $this->url) . '</info> (<comment>' . $tag . '</comment>)';
            if ($isVeryVerbose) {
                $this->io->writeError($msg);
            } elseif ($isVerbose) {
                $this->io->overwriteError($msg, false);
            }

// strip the release- prefix from tags if present
            $tag = str_replace('release-', '', $tag);

$cachedPackage = $this->getCachedPackageVersion($tag, $identifier, $isVerbose, $isVeryVerbose);
            if ($cachedPackage) {
                $this->addPackage($cachedPackage);

continue;
            }
            if ($cachedPackage === false) {
                $this->emptyReferences[] = $identifier;

continue;
            }

if (!$parsedTag = $this->validateTag($tag)) {
                if ($isVeryVerbose) {
                    $this->io->writeError('<warning>Skipped tag '.$tag.', invalid tag name</warning>');
                }
                continue;
            }

try {
                if (!$data = $driver->getComposerInformation($identifier)) {
                    if ($isVeryVerbose) {
                        $this->io->writeError('<warning>Skipped tag '.$tag.', no composer file</warning>');
                    }
                    $this->emptyReferences[] = $identifier;
                    continue;
                }

// manually versioned package
                if (isset($data['version'])) {
                    $data['version_normalized'] = $this->versionParser->normalize($data['version']);
                } else {
                    // auto-versioned package, read value from tag
                    $data['version'] = $tag;
                    $data['version_normalized'] = $parsedTag;
                }

// make sure tag packages have no -dev flag
                $data['version'] = Preg::replace('{[.-]?dev$}i', '', $data['version']);
                $data['version_normalized'] = Preg::replace('{(^dev-|[.-]?dev$)}i', '', $data['version_normalized']);

// make sure tag do not contain the default-branch marker
                unset($data['default-branch']);

// broken package, version doesn't match tag
                if ($data['version_normalized'] !== $parsedTag) {
                    if ($isVeryVerbose) {
                        if (Preg::isMatch('{(^dev-|[.-]?dev$)}i', $parsedTag)) {
                            $this->io->writeError('<warning>Skipped tag '.$tag.', invalid tag name, tags can not use dev prefixes or suffixes</warning>');
                        } else {
                            $this->io->writeError('<warning>Skipped tag '.$tag.', tag ('.$parsedTag.') does not match version ('.$data['version_normalized'].') in composer.json</warning>');
                        }
                    }
                    continue;
                }

$tagPackageName = $this->packageName ?: (isset($data['name']) ? $data['name'] : '');
                if ($existingPackage = $this->findPackage($tagPackageName, $data['version_normalized'])) {
                    if ($isVeryVerbose) {
                        $this->io->writeError('<warning>Skipped tag '.$tag.', it conflicts with an another tag ('.$existingPackage->getPrettyVersion().') as both resolve to '.$data['version_normalized'].' internally</warning>');
                    }
                    continue;
                }

if ($isVeryVerbose) {
                    $this->io->writeError('Importing tag '.$tag.' ('.$data['version_normalized'].')');
                }

$this->addPackage($this->loader->load($this->preProcess($driver, $data, $identifier)));
            } catch (\Exception $e) {
                if ($e instanceof TransportException) {
                    $this->versionTransportExceptions['tags'][$tag] = $e;
                    if ($e->getCode() === 404) {
                        $this->emptyReferences[] = $identifier;
                    }
                    if ($this->shouldRethrowTransportException($e)) {
                        throw $e;
                    }
                }
                if ($isVeryVerbose) {
                    $this->io->writeError('<warning>Skipped tag '.$tag.', '.($e instanceof TransportException ? 'no composer file was found (' . $e->getCode() . ' HTTP status code)' : $e->getMessage()).'</warning>');
                }
                continue;
            }
        }

if (!$isVeryVerbose) {
            $this->io->overwriteError('', false);
        }

$branches = $driver->getBranches();
        // make sure the root identifier branch gets loaded first
        if ($hasRootIdentifierComposerJson && isset($branches[$driver->getRootIdentifier()])) {
            $branches = array($driver->getRootIdentifier() => $branches[$driver->getRootIdentifier()]) + $branches;
        }

foreach ($branches as $branch => $identifier) {
            $branch = (string) $branch;
            $msg = 'Reading composer.json of <info>' . ($this->packageName ?: $this->url) . '</info> (<comment>' . $branch . '</comment>)';
            if ($isVeryVerbose) {
                $this->io->writeError($msg);
            } elseif ($isVerbose) {
                $this->io->overwriteError($msg, false);
            }

if (!$parsedBranch = $this->validateBranch($branch)) {
                if ($isVeryVerbose) {
                    $this->io->writeError('<warning>Skipped branch '.$branch.', invalid name</warning>');
                }
                continue;
            }

// make sure branch packages have a dev flag
            if (strpos($parsedBranch, 'dev-') === 0 || VersionParser::DEFAULT_BRANCH_ALIAS === $parsedBranch) {
                $version = 'dev-' . $branch;
            } else {
                $prefix = strpos($branch, 'v') === 0 ? 'v' : '';
                $version = $prefix . Preg::replace('{(\.9{7})+}', '.x', $parsedBranch);
            }

$cachedPackage = $this->getCachedPackageVersion($version, $identifier, $isVerbose, $isVeryVerbose, $driver->getRootIdentifier() === $branch);
            if ($cachedPackage) {
                $this->addPackage($cachedPackage);

continue;
            }
            if ($cachedPackage === false) {
                $this->emptyReferences[] = $identifier;

continue;
            }

try {
                if (!$data = $driver->getComposerInformation($identifier)) {
                    if ($isVeryVerbose) {
                        $this->io->writeError('<warning>Skipped branch '.$branch.', no composer file</warning>');
                    }
                    $this->emptyReferences[] = $identifier;
                    continue;
                }

// branches are always auto-versioned, read value from branch name
                $data['version'] = $version;
                $data['version_normalized'] = $parsedBranch;

unset($data['default-branch']);
                if ($driver->getRootIdentifier() === $branch) {
                    $data['default-branch'] = true;
                }

if ($isVeryVerbose) {
                    $this->io->writeError('Importing branch '.$branch.' ('.$data['version'].')');
                }

$packageData = $this->preProcess($driver, $data, $identifier);
                $package = $this->loader->load($packageData);
                if ($this->loader instanceof ValidatingArrayLoader && $this->loader->getWarnings()) {
                    throw new InvalidPackageException($this->loader->getErrors(), $this->loader->getWarnings(), $packageData);
                }
                $this->addPackage($package);
            } catch (TransportException $e) {
                $this->versionTransportExceptions['branches'][$branch] = $e;
                if ($e->getCode() === 404) {
                    $this->emptyReferences[] = $identifier;
                }
                if ($this->shouldRethrowTransportException($e)) {
                    throw $e;
                }
                if ($isVeryVerbose) {
                    $this->io->writeError('<warning>Skipped branch '.$branch.', no composer file was found (' . $e->getCode() . ' HTTP status code)</warning>');
                }
                continue;
            } catch (\Exception $e) {
                if (!$isVeryVerbose) {
                    $this->io->writeError('');
                }
                $this->branchErrorOccurred = true;
                $this->io->writeError('<error>Skipped branch '.$branch.', '.$e->getMessage().'</error>');
                $this->io->writeError('');
                continue;
            }
        }
        $driver->cleanup();

if (!$isVeryVerbose) {
            $this->io->overwriteError('', false);
        }

if (!$this->getPackages()) {
            throw new InvalidRepositoryException('No valid composer.json was found in any branch or tag of '.$this->url.', could not load a package from it.');
        }
    }

/**
     * @param VcsDriverInterface $driver
     * @param array{name?: string, dist?: array{type: string, url: string, reference: string, shasum: string}, source?: array{type: string, url: string, reference: string}} $data
     * @param string $identifier
     *
     * @return array{name: string|null, dist: array{type: string, url: string, reference: string, shasum: string}|null, source: array{type: string, url: string, reference: string}}
     */
    protected function preProcess(VcsDriverInterface $driver, array $data, $identifier)
    {
        // keep the name of the main identifier for all packages
        // this ensures that a package can be renamed in one place and that all old tags
        // will still be installable using that new name without requiring re-tagging
        $dataPackageName = isset($data['name']) ? $data['name'] : null;
        $data['name'] = $this->packageName ?: $dataPackageName;

if (!isset($data['dist'])) {
            $data['dist'] = $driver->getDist($identifier);
        }
        if (!isset($data['source'])) {
            $data['source'] = $driver->getSource($identifier);
        }

return $data;
    }

/**
     * @param string $branch
     *
     * @return string|false
     */
    private function validateBranch($branch)
    {
        try {
            $normalizedBranch = $this->versionParser->normalizeBranch($branch);

// validate that the branch name has no weird characters conflicting with constraints
            $this->versionParser->parseConstraints($normalizedBranch);

return $normalizedBranch;
        } catch (\Exception $e) {
        }

return false;
    }

/**
     * @param string $version
     *
     * @return string|false
     */
    private function validateTag($version)
    {
        try {
            return $this->versionParser->normalize($version);
        } catch (\Exception $e) {
        }

return false;
    }

/**
     * @param string $version
     * @param string $identifier
     * @param bool $isVerbose
     * @param bool $isVeryVerbose
     * @param bool $isDefaultBranch
     *
     * @return \Composer\Package\CompletePackage|\Composer\Package\CompleteAliasPackage|null|false null if no cache present, false if the absence of a version was cached
     */
    private function getCachedPackageVersion($version, $identifier, $isVerbose, $isVeryVerbose, $isDefaultBranch = false)
    {
        if (!$this->versionCache) {
            return null;
        }

$cachedPackage = $this->versionCache->getVersionPackage($version, $identifier);
        if ($cachedPackage === false) {
            if ($isVeryVerbose) {
                $this->io->writeError('<warning>Skipped '.$version.', no composer file (cached from ref '.$identifier.')</warning>');
            }

return false;
        }

if ($cachedPackage) {
            $msg = 'Found cached composer.json of <info>' . ($this->packageName ?: $this->url) . '</info> (<comment>' . $version . '</comment>)';
            if ($isVeryVerbose) {
                $this->io->writeError($msg);
            } elseif ($isVerbose) {
                $this->io->overwriteError($msg, false);
            }

unset($cachedPackage['default-branch']);
            if ($isDefaultBranch) {
                $cachedPackage['default-branch'] = true;
            }

if ($existingPackage = $this->findPackage($cachedPackage['name'], new Constraint('=', $cachedPackage['version_normalized']))) {
                if ($isVeryVerbose) {
                    $this->io->writeError('<warning>Skipped cached version '.$version.', it conflicts with an another tag ('.$existingPackage->getPrettyVersion().') as both resolve to '.$cachedPackage['version_normalized'].' internally</warning>');
                }
                $cachedPackage = null;
            }
        }

if ($cachedPackage) {
            return $this->loader->load($cachedPackage);
        }

return null;
    }

/**
     * @return bool
     */
    private function shouldRethrowTransportException(TransportException $e)
    {
        return in_array($e->getCode(), array(401, 403, 429), true) || $e->getCode() >= 500;
    }
}
<?php

namespace Composer\Repository;

use Composer\Package\AliasPackage;
use Composer\Package\BasePackage;
use Composer\Package\CompleteAliasPackage;
use Composer\Package\CompletePackage;
use Composer\Package\PackageInterface;
use Composer\Package\CompletePackageInterface;
use Composer\Package\Version\VersionParser;
use Composer\Package\Version\StabilityFilter;
use Composer\Pcre\Preg;
use Composer\Semver\Constraint\ConstraintInterface;
use Composer\Semver\Constraint\Constraint;

/**
 * A repository implementation that simply stores packages in an array
 *
 * @author Nils Adermann <naderman@naderman.de>
 */
class ArrayRepository implements RepositoryInterface
{
    /** @var ?array<BasePackage> */
    protected $packages = null;

/**
     * @var ?array<BasePackage> indexed by package unique name and used to cache hasPackage calls
     */
    protected $packageMap = null;

/**
     * @param array<PackageInterface> $packages
     */
    public function __construct(array $packages = array())
    {
        foreach ($packages as $package) {
            $this->addPackage($package);
        }
    }

public function getRepoName()
    {
        return 'array repo (defining '.$this->count().' package'.($this->count() > 1 ? 's' : '').')';
    }

/**
     * @inheritDoc
     */
    public function loadPackages(array $packageMap, array $acceptableStabilities, array $stabilityFlags, array $alreadyLoaded = array())
    {
        $packages = $this->getPackages();

$result = array();
        $namesFound = array();
        foreach ($packages as $package) {
            if (array_key_exists($package->getName(), $packageMap)) {
                if (
                    (!$packageMap[$package->getName()] || $packageMap[$package->getName()]->matches(new Constraint('==', $package->getVersion())))
                    && StabilityFilter::isPackageAcceptable($acceptableStabilities, $stabilityFlags, $package->getNames(), $package->getStability())
                    && !isset($alreadyLoaded[$package->getName()][$package->getVersion()])
                ) {
                    // add selected packages which match stability requirements
                    $result[spl_object_hash($package)] = $package;
                    // add the aliased package for packages where the alias matches
                    if ($package instanceof AliasPackage && !isset($result[spl_object_hash($package->getAliasOf())])) {
                        $result[spl_object_hash($package->getAliasOf())] = $package->getAliasOf();
                    }
                }

$namesFound[$package->getName()] = true;
            }
        }

// add aliases of packages that were selected, even if the aliases did not match
        foreach ($packages as $package) {
            if ($package instanceof AliasPackage) {
                if (isset($result[spl_object_hash($package->getAliasOf())])) {
                    $result[spl_object_hash($package)] = $package;
                }
            }
        }

return array('namesFound' => array_keys($namesFound), 'packages' => $result);
    }

/**
     * @inheritDoc
     */
    public function findPackage($name, $constraint)
    {
        $name = strtolower($name);

if (!$constraint instanceof ConstraintInterface) {
            $versionParser = new VersionParser();
            $constraint = $versionParser->parseConstraints($constraint);
        }

foreach ($this->getPackages() as $package) {
            if ($name === $package->getName()) {
                $pkgConstraint = new Constraint('==', $package->getVersion());
                if ($constraint->matches($pkgConstraint)) {
                    return $package;
                }
            }
        }

return null;
    }

/**
     * @inheritDoc
     */
    public function findPackages($name, $constraint = null)
    {
        // normalize name
        $name = strtolower($name);
        $packages = array();

if (null !== $constraint && !$constraint instanceof ConstraintInterface) {
            $versionParser = new VersionParser();
            $constraint = $versionParser->parseConstraints($constraint);
        }

foreach ($this->getPackages() as $package) {
            if ($name === $package->getName()) {
                if (null === $constraint || $constraint->matches(new Constraint('==', $package->getVersion()))) {
                    $packages[] = $package;
                }
            }
        }

return $packages;
    }

/**
     * @inheritDoc
     */
    public function search($query, $mode = 0, $type = null)
    {
        if ($mode === self::SEARCH_FULLTEXT) {
            $regex = '{(?:'.implode('|', Preg::split('{\s+}', preg_quote($query))).')}i';
        } else {
            // vendor/name searches expect the caller to have preg_quoted the query
            $regex = '{(?:'.implode('|', Preg::split('{\s+}', $query)).')}i';
        }

$matches = array();
        foreach ($this->getPackages() as $package) {
            $name = $package->getName();
            if ($mode === self::SEARCH_VENDOR) {
                list($name) = explode('/', $name);
            }
            if (isset($matches[$name])) {
                continue;
            }
            if (null !== $type && $package->getType() !== $type) {
                continue;
            }

if (Preg::isMatch($regex, $name)
                || ($mode === self::SEARCH_FULLTEXT && $package instanceof CompletePackageInterface && Preg::isMatch($regex, implode(' ', (array) $package->getKeywords()) . ' ' . $package->getDescription()))
            ) {
                if ($mode === self::SEARCH_VENDOR) {
                    $matches[$name] = array(
                        'name' => $name,
                        'description' => null,
                    );
                } else {
                    $matches[$name] = array(
                        'name' => $package->getPrettyName(),
                        'description' => $package instanceof CompletePackageInterface ? $package->getDescription() : null,
                    );

if ($package instanceof CompletePackageInterface && $package->isAbandoned()) {
                        $matches[$name]['abandoned'] = $package->getReplacementPackage() ?: true;
                    }
                }
            }
        }

return array_values($matches);
    }

/**
     * @inheritDoc
     */
    public function hasPackage(PackageInterface $package)
    {
        if ($this->packageMap === null) {
            $this->packageMap = array();
            foreach ($this->getPackages() as $repoPackage) {
                $this->packageMap[$repoPackage->getUniqueName()] = $repoPackage;
            }
        }

return isset($this->packageMap[$package->getUniqueName()]);
    }

/**
     * Adds a new package to the repository
     *
     * @return void
     */
    public function addPackage(PackageInterface $package)
    {
        if (!$package instanceof BasePackage) {
            throw new \InvalidArgumentException('Only subclasses of BasePackage are supported');
        }
        if (null === $this->packages) {
            $this->initialize();
        }
        $package->setRepository($this);
        $this->packages[] = $package;

if ($package instanceof AliasPackage) {
            $aliasedPackage = $package->getAliasOf();
            if (null === $aliasedPackage->getRepository()) {
                $this->addPackage($aliasedPackage);
            }
        }

// invalidate package map cache
        $this->packageMap = null;
    }

/**
     * @inheritDoc
     */
    public function getProviders($packageName)
    {
        $result = array();

foreach ($this->getPackages() as $candidate) {
            if (isset($result[$candidate->getName()])) {
                continue;
            }
            foreach ($candidate->getProvides() as $link) {
                if ($packageName === $link->getTarget()) {
                    $result[$candidate->getName()] = array(
                        'name' => $candidate->getName(),
                        'description' => $candidate instanceof CompletePackageInterface ? $candidate->getDescription() : null,
                        'type' => $candidate->getType(),
                    );
                    continue 2;
                }
            }
        }

return $result;
    }

/**
     * @param string $alias
     * @param string $prettyAlias
     *
     * @return AliasPackage|CompleteAliasPackage
     */
    protected function createAliasPackage(BasePackage $package, $alias, $prettyAlias)
    {
        while ($package instanceof AliasPackage) {
            $package = $package->getAliasOf();
        }

if ($package instanceof CompletePackage) {
            return new CompleteAliasPackage($package, $alias, $prettyAlias);
        }

return new AliasPackage($package, $alias, $prettyAlias);
    }

/**
     * Removes package from repository.
     *
     * @param PackageInterface $package package instance
     *
     * @return void
     */
    public function removePackage(PackageInterface $package)
    {
        $packageId = $package->getUniqueName();

foreach ($this->getPackages() as $key => $repoPackage) {
            if ($packageId === $repoPackage->getUniqueName()) {
                array_splice($this->packages, $key, 1);

// invalidate package map cache
                $this->packageMap = null;

return;
            }
        }
    }

/**
     * @inheritDoc
     */
    public function getPackages()
    {
        if (null === $this->packages) {
            $this->initialize();
        }

if (null === $this->packages) {
            throw new \LogicException('initialize failed to initialize the packages array');
        }

return $this->packages;
    }

/**
     * Returns the number of packages in this repository
     *
     * @return int Number of packages
     */
    #[\ReturnTypeWillChange]
    public function count()
    {
        if (null === $this->packages) {
            $this->initialize();
        }

return count($this->packages);
    }

/**
     * Initializes the packages array. Mostly meant as an extension point.
     *
     * @return void
     */
    protected function initialize()
    {
        $this->packages = array();
    }
}
<?php

namespace Composer\Repository;

use Composer\Package\BasePackage;
use Composer\Package\PackageInterface;
use Composer\Package\Version\VersionParser;
use Composer\Semver\Constraint\ConstraintInterface;
use Composer\Semver\Constraint\Constraint;
use Composer\Semver\Constraint\MatchAllConstraint;
use Composer\Package\RootPackageInterface;
use Composer\Package\Link;

/**
 * Installed repository is a composite of all installed repo types.
 *
 * The main use case is tagging a repo as an "installed" repository, and offering a way to get providers/replacers easily.
 *
 * Installed repos are LockArrayRepository, InstalledRepositoryInterface, RootPackageRepository and PlatformRepository
 *
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class InstalledRepository extends CompositeRepository
{
    /**
     * @param string $name
     * @param ConstraintInterface|string|null $constraint
     *
     * @return BasePackage[]
     */
    public function findPackagesWithReplacersAndProviders($name, $constraint = null)
    {
        $name = strtolower($name);

$matches = array();
        foreach ($this->getRepositories() as $repo) {
            foreach ($repo->getPackages() as $candidate) {
                if ($name === $candidate->getName()) {
                    if (null === $constraint || $constraint->matches(new Constraint('==', $candidate->getVersion()))) {
                        $matches[] = $candidate;
                    }
                    continue;
                }

foreach (array_merge($candidate->getProvides(), $candidate->getReplaces()) as $link) {
                    if (
                        $name === $link->getTarget()
                        && ($constraint === null || $constraint->matches($link->getConstraint()))
                    ) {
                        $matches[] = $candidate;
                        continue 2;
                    }
                }
            }
        }

return $matches;
    }

/**
     * Returns a list of links causing the requested needle packages to be installed, as an associative array with the
     * dependent's name as key, and an array containing in order the PackageInterface and Link describing the relationship
     * as values. If recursive lookup was requested a third value is returned containing an identically formed array up
     * to the root package. That third value will be false in case a circular recursion was detected.
     *
     * @param  string|string[]          $needle        The package name(s) to inspect.
     * @param  ConstraintInterface|null $constraint    Optional constraint to filter by.
     * @param  bool                     $invert        Whether to invert matches to discover reasons for the package *NOT* to be installed.
     * @param  bool                     $recurse       Whether to recursively expand the requirement tree up to the root package.
     * @param  string[]                 $packagesFound Used internally when recurring
     *
     * @return array[] An associative array of arrays as described above.
     * @phpstan-return array<array{0: PackageInterface, 1: Link, 2: mixed[]|bool}>
     */
    public function getDependents($needle, $constraint = null, $invert = false, $recurse = true, $packagesFound = null)
    {
        $needles = array_map('strtolower', (array) $needle);
        $results = array();

// initialize the array with the needles before any recursion occurs
        if (null === $packagesFound) {
            $packagesFound = $needles;
        }

// locate root package for use below
        $rootPackage = null;
        foreach ($this->getPackages() as $package) {
            if ($package instanceof RootPackageInterface) {
                $rootPackage = $package;
                break;
            }
        }

// Loop over all currently installed packages.
        foreach ($this->getPackages() as $package) {
            $links = $package->getRequires();

// each loop needs its own "tree" as we want to show the complete dependent set of every needle
            // without warning all the time about finding circular deps
            $packagesInTree = $packagesFound;

// Replacements are considered valid reasons for a package to be installed during forward resolution
            if (!$invert) {
                $links += $package->getReplaces();

// On forward search, check if any replaced package was required and add the replaced
                // packages to the list of needles. Contrary to the cross-reference link check below,
                // replaced packages are the target of links.
                foreach ($package->getReplaces() as $link) {
                    foreach ($needles as $needle) {
                        if ($link->getSource() === $needle) {
                            if ($constraint === null || ($link->getConstraint()->matches($constraint) === true)) {
                                // already displayed this node's dependencies, cutting short
                                if (in_array($link->getTarget(), $packagesInTree)) {
                                    $results[] = array($package, $link, false);
                                    continue;
                                }
                                $packagesInTree[] = $link->getTarget();
                                $dependents = $recurse ? $this->getDependents($link->getTarget(), null, false, true, $packagesInTree) : array();
                                $results[] = array($package, $link, $dependents);
                                $needles[] = $link->getTarget();
                            }
                        }
                    }
                }
            }

// Require-dev is only relevant for the root package
            if ($package instanceof RootPackageInterface) {
                $links += $package->getDevRequires();
            }

// Cross-reference all discovered links to the needles
            foreach ($links as $link) {
                foreach ($needles as $needle) {
                    if ($link->getTarget() === $needle) {
                        if ($constraint === null || ($link->getConstraint()->matches($constraint) === !$invert)) {
                            // already displayed this node's dependencies, cutting short
                            if (in_array($link->getSource(), $packagesInTree)) {
                                $results[] = array($package, $link, false);
                                continue;
                            }
                            $packagesInTree[] = $link->getSource();
                            $dependents = $recurse ? $this->getDependents($link->getSource(), null, false, true, $packagesInTree) : array();
                            $results[] = array($package, $link, $dependents);
                        }
                    }
                }
            }

// When inverting, we need to check for conflicts of the needles against installed packages
            if ($invert && in_array($package->getName(), $needles)) {
                foreach ($package->getConflicts() as $link) {
                    foreach ($this->findPackages($link->getTarget()) as $pkg) {
                        $version = new Constraint('=', $pkg->getVersion());
                        if ($link->getConstraint()->matches($version) === $invert) {
                            $results[] = array($package, $link, false);
                        }
                    }
                }
            }

// List conflicts against X as they may explain why the current version was selected, or explain why it is rejected if the conflict matched when inverting
            foreach ($package->getConflicts() as $link) {
                if (in_array($link->getTarget(), $needles)) {
                    foreach ($this->findPackages($link->getTarget()) as $pkg) {
                        $version = new Constraint('=', $pkg->getVersion());
                        if ($link->getConstraint()->matches($version) === $invert) {
                            $results[] = array($package, $link, false);
                        }
                    }
                }
            }

// When inverting, we need to check for conflicts of the needles' requirements against installed packages
            if ($invert && $constraint && in_array($package->getName(), $needles) && $constraint->matches(new Constraint('=', $package->getVersion()))) {
                foreach ($package->getRequires() as $link) {
                    if (PlatformRepository::isPlatformPackage($link->getTarget())) {
                        if ($this->findPackage($link->getTarget(), $link->getConstraint())) {
                            continue;
                        }

$platformPkg = $this->findPackage($link->getTarget(), '*');
                        $description = $platformPkg ? 'but '.$platformPkg->getPrettyVersion().' is installed' : 'but it is missing';
                        $results[] = array($package, new Link($package->getName(), $link->getTarget(), new MatchAllConstraint, Link::TYPE_REQUIRE, $link->getPrettyConstraint().' '.$description), false);

continue;
                    }

foreach ($this->getPackages() as $pkg) {
                        if (!in_array($link->getTarget(), $pkg->getNames())) {
                            continue;
                        }

$version = new Constraint('=', $pkg->getVersion());

if ($link->getTarget() !== $pkg->getName()) {
                            foreach (array_merge($pkg->getReplaces(), $pkg->getProvides()) as $prov) {
                                if ($link->getTarget() === $prov->getTarget()) {
                                    $version = $prov->getConstraint();
                                    break;
                                }
                            }
                        }

if (!$link->getConstraint()->matches($version)) {
                            // if we have a root package (we should but can not guarantee..) we show
                            // the root requires as well to perhaps allow to find an issue there
                            if ($rootPackage) {
                                foreach (array_merge($rootPackage->getRequires(), $rootPackage->getDevRequires()) as $rootReq) {
                                    if (in_array($rootReq->getTarget(), $pkg->getNames()) && !$rootReq->getConstraint()->matches($link->getConstraint())) {
                                        $results[] = array($package, $link, false);
                                        $results[] = array($rootPackage, $rootReq, false);
                                        continue 3;
                                    }
                                }

$results[] = array($package, $link, false);
                                $results[] = array($rootPackage, new Link($rootPackage->getName(), $link->getTarget(), new MatchAllConstraint, Link::TYPE_DOES_NOT_REQUIRE, 'but ' . $pkg->getPrettyVersion() . ' is installed'), false);
                            } else {
                                // no root so let's just print whatever we found
                                $results[] = array($package, $link, false);
                            }
                        }

continue 2;
                    }
                }
            }
        }

ksort($results);

return $results;
    }

public function getRepoName()
    {
        return 'installed repo ('.implode(', ', array_map(function ($repo) {
            return $repo->getRepoName();
        }, $this->getRepositories())).')';
    }

/**
     * @inheritDoc
     */
    public function addRepository(RepositoryInterface $repository)
    {
        if (
            $repository instanceof LockArrayRepository
            || $repository instanceof InstalledRepositoryInterface
            || $repository instanceof RootPackageRepository
            || $repository instanceof PlatformRepository
        ) {
            parent::addRepository($repository);

return;
        }

throw new \LogicException('An InstalledRepository can not contain a repository of type '.get_class($repository).' ('.$repository->getRepoName().')');
    }
}
<?php

namespace Composer\Repository;

/**
 * Configurable repository interface.
 *
 * @author Lukas Homza <lukashomz@gmail.com>
 */
interface ConfigurableRepositoryInterface
{
    /**
     * @return mixed[]
     */
    public function getRepoConfig();
}
<?php

namespace Composer\Repository;

use Composer\Package\PackageInterface;
use Composer\Package\BasePackage;
use Composer\Pcre\Preg;

/**
 * Filters which packages are seen as canonical on this repo by loadPackages
 *
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class FilterRepository implements RepositoryInterface
{
    /** @var ?string */
    private $only = null;
    /** @var ?string */
    private $exclude = null;
    /** @var bool */
    private $canonical = true;
    /** @var RepositoryInterface */
    private $repo;

/**
     * @param array{only?: array<string>, exclude?: array<string>, canonical?: bool} $options
     */
    public function __construct(RepositoryInterface $repo, array $options)
    {
        if (isset($options['only'])) {
            if (!is_array($options['only'])) {
                throw new \InvalidArgumentException('"only" key for repository '.$repo->getRepoName().' should be an array');
            }
            $this->only = BasePackage::packageNamesToRegexp($options['only']);
        }
        if (isset($options['exclude'])) {
            if (!is_array($options['exclude'])) {
                throw new \InvalidArgumentException('"exclude" key for repository '.$repo->getRepoName().' should be an array');
            }
            $this->exclude = BasePackage::packageNamesToRegexp($options['exclude']);
        }
        if ($this->exclude && $this->only) {
            throw new \InvalidArgumentException('Only one of "only" and "exclude" can be specified for repository '.$repo->getRepoName());
        }
        if (isset($options['canonical'])) {
            if (!is_bool($options['canonical'])) {
                throw new \InvalidArgumentException('"canonical" key for repository '.$repo->getRepoName().' should be a boolean');
            }
            $this->canonical = $options['canonical'];
        }

$this->repo = $repo;
    }

public function getRepoName()
    {
        return $this->repo->getRepoName();
    }

/**
     * Returns the wrapped repositories
     *
     * @return RepositoryInterface
     */
    public function getRepository()
    {
        return $this->repo;
    }

/**
     * @inheritDoc
     */
    public function hasPackage(PackageInterface $package)
    {
        return $this->repo->hasPackage($package);
    }

/**
     * @inheritDoc
     */
    public function findPackage($name, $constraint)
    {
        if (!$this->isAllowed($name)) {
            return null;
        }

return $this->repo->findPackage($name, $constraint);
    }

/**
     * @inheritDoc
     */
    public function findPackages($name, $constraint = null)
    {
        if (!$this->isAllowed($name)) {
            return array();
        }

return $this->repo->findPackages($name, $constraint);
    }

/**
     * @inheritDoc
     */
    public function loadPackages(array $packageMap, array $acceptableStabilities, array $stabilityFlags, array $alreadyLoaded = array())
    {
        foreach ($packageMap as $name => $constraint) {
            if (!$this->isAllowed($name)) {
                unset($packageMap[$name]);
            }
        }

if (!$packageMap) {
            return array('namesFound' => array(), 'packages' => array());
        }

$result = $this->repo->loadPackages($packageMap, $acceptableStabilities, $stabilityFlags, $alreadyLoaded);
        if (!$this->canonical) {
            $result['namesFound'] = array();
        }

return $result;
    }

/**
     * @inheritDoc
     */
    public function search($query, $mode = 0, $type = null)
    {
        $result = array();

foreach ($this->repo->search($query, $mode, $type) as $package) {
            if ($this->isAllowed($package['name'])) {
                $result[] = $package;
            }
        }

return $result;
    }

/**
     * @inheritDoc
     */
    public function getPackages()
    {
        $result = array();
        foreach ($this->repo->getPackages() as $package) {
            if ($this->isAllowed($package->getName())) {
                $result[] = $package;
            }
        }

return $result;
    }

/**
     * @inheritDoc
     */
    public function getProviders($packageName)
    {
        $result = array();
        foreach ($this->repo->getProviders($packageName) as $name => $provider) {
            if ($this->isAllowed($provider['name'])) {
                $result[$name] = $provider;
            }
        }

return $result;
    }

/**
     * @inheritDoc
     */
    #[\ReturnTypeWillChange]
    public function count()
    {
        if ($this->repo->count() > 0) {
            return count($this->getPackages());
        }

return 0;
    }

/**
     * @param string $name
     *
     * @return bool
     */
    private function isAllowed($name)
    {
        if (!$this->only && !$this->exclude) {
            return true;
        }

if ($this->only) {
            return Preg::isMatch($this->only, $name);
        }

return !Preg::isMatch($this->exclude, $name);
    }
}
<?php

namespace Composer\Repository;

use Composer\IO\IOInterface;
use Composer\Json\JsonFile;
use Composer\Package\BasePackage;
use Composer\Package\Loader\ArrayLoader;
use Composer\Package\Loader\LoaderInterface;
use Composer\Util\Tar;
use Composer\Util\Zip;

/**
 * @author Serge Smertin <serg.smertin@gmail.com>
 */
class ArtifactRepository extends ArrayRepository implements ConfigurableRepositoryInterface
{
    /** @var LoaderInterface */
    protected $loader;

/** @var string */
    protected $lookup;
    /** @var array{url: string} */
    protected $repoConfig;
    /** @var IOInterface */
    private $io;

/**
     * @param array{url: string} $repoConfig
     */
    public function __construct(array $repoConfig, IOInterface $io)
    {
        parent::__construct();
        if (!extension_loaded('zip')) {
            throw new \RuntimeException('The artifact repository requires PHP\'s zip extension');
        }

$this->loader = new ArrayLoader();
        $this->lookup = $repoConfig['url'];
        $this->io = $io;
        $this->repoConfig = $repoConfig;
    }

public function getRepoName()
    {
        return 'artifact repo ('.$this->lookup.')';
    }

public function getRepoConfig()
    {
        return $this->repoConfig;
    }

protected function initialize()
    {
        parent::initialize();

$this->scanDirectory($this->lookup);
    }

/**
     * @param string $path
     *
     * @return void
     */
    private function scanDirectory($path)
    {
        $io = $this->io;

$directory = new \RecursiveDirectoryIterator($path, \RecursiveDirectoryIterator::FOLLOW_SYMLINKS);
        $iterator = new \RecursiveIteratorIterator($directory);
        $regex = new \RegexIterator($iterator, '/^.+\.(zip|tar|gz|tgz)$/i');
        foreach ($regex as $file) {
            /* @var $file \SplFileInfo */
            if (!$file->isFile()) {
                continue;
            }

$package = $this->getComposerInformation($file);
            if (!$package) {
                $io->writeError("File <comment>{$file->getBasename()}</comment> doesn't seem to hold a package", true, IOInterface::VERBOSE);
                continue;
            }

$template = 'Found package <info>%s</info> (<comment>%s</comment>) in file <info>%s</info>';
            $io->writeError(sprintf($template, $package->getName(), $package->getPrettyVersion(), $file->getBasename()), true, IOInterface::VERBOSE);

$this->addPackage($package);
        }
    }

/**
     * @return ?BasePackage
     */
    private function getComposerInformation(\SplFileInfo $file)
    {
        $json = null;
        $fileType = null;
        $fileExtension = pathinfo($file->getPathname(), PATHINFO_EXTENSION);
        if (in_array($fileExtension, array('gz', 'tar', 'tgz'), true)) {
            $fileType = 'tar';
        } elseif ($fileExtension === 'zip') {
            $fileType = 'zip';
        } else {
            throw new \RuntimeException('Files with "'.$fileExtension.'" extensions aren\'t supported. Only ZIP and TAR/TAR.GZ/TGZ archives are supported.');
        }

try {
            if ($fileType === 'tar') {
                $json = Tar::getComposerJson($file->getPathname());
            } else {
                $json = Zip::getComposerJson($file->getPathname());
            }
        } catch (\Exception $exception) {
            $this->io->write('Failed loading package '.$file->getPathname().': '.$exception->getMessage(), false, IOInterface::VERBOSE);
        }

if (null === $json) {
            return null;
        }

$package = JsonFile::parseJson($json, $file->getPathname().'#composer.json');
        $package['dist'] = array(
            'type' => $fileType,
            'url' => strtr($file->getPathname(), '\\', '/'),
            'shasum' => sha1_file($file->getRealPath()),
        );

try {
            $package = $this->loader->load($package);
        } catch (\UnexpectedValueException $e) {
            throw new \UnexpectedValueException('Failed loading package in '.$file.': '.$e->getMessage(), 0, $e);
        }

return $package;
    }
}
<?php

namespace Composer\Repository;

/**
 * Exception thrown when a package repository is utterly broken
 *
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class InvalidRepositoryException extends \Exception
{
}
<?php

namespace Composer\Repository;

use Composer\Package\AliasPackage;
use Composer\Installer\InstallationManager;

/**
 * Writable array repository.
 *
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class WritableArrayRepository extends ArrayRepository implements WritableRepositoryInterface
{
    /**
     * @var string[]
     */
    protected $devPackageNames = array();

/**
     * @inheritDoc
     */
    public function setDevPackageNames(array $devPackageNames)
    {
        $this->devPackageNames = $devPackageNames;
    }

/**
     * @inheritDoc
     */
    public function getDevPackageNames()
    {
        return $this->devPackageNames;
    }

/**
     * @inheritDoc
     */
    public function write($devMode, InstallationManager $installationManager)
    {
    }

/**
     * @inheritDoc
     */
    public function reload()
    {
    }

/**
     * @inheritDoc
     */
    public function getCanonicalPackages()
    {
        $packages = $this->getPackages();

// get at most one package of each name, preferring non-aliased ones
        $packagesByName = array();
        foreach ($packages as $package) {
            if (!isset($packagesByName[$package->getName()]) || $packagesByName[$package->getName()] instanceof AliasPackage) {
                $packagesByName[$package->getName()] = $package;
            }
        }

$canonicalPackages = array();

// unfold aliased packages
        foreach ($packagesByName as $package) {
            while ($package instanceof AliasPackage) {
                $package = $package->getAliasOf();
            }

$canonicalPackages[] = $package;
        }

return $canonicalPackages;
    }
}
<?php

namespace Composer\Repository;

use Composer\Package\PackageInterface;
use Composer\Installer\InstallationManager;

/**
 * Writable repository interface.
 *
 * @author Konstantin Kudryashov <ever.zet@gmail.com>
 */
interface WritableRepositoryInterface extends RepositoryInterface
{
    /**
     * Writes repository (f.e. to the disc).
     *
     * @param bool $devMode Whether dev requirements were included or not in this installation
     * @return void
     */
    public function write($devMode, InstallationManager $installationManager);

/**
     * Adds package to the repository.
     *
     * @param PackageInterface $package package instance
     * @return void
     */
    public function addPackage(PackageInterface $package);

/**
     * Removes package from the repository.
     *
     * @param PackageInterface $package package instance
     * @return void
     */
    public function removePackage(PackageInterface $package);

/**
     * Get unique packages (at most one package of each name), with aliases resolved and removed.
     *
     * @return PackageInterface[]
     */
    public function getCanonicalPackages();

/**
     * Forces a reload of all packages.
     *
     * @return void
     */
    public function reload();

/**
     * @param string[] $devPackageNames
     * @return void
     */
    public function setDevPackageNames(array $devPackageNames);

/**
     * @return string[] Names of dependencies installed through require-dev
     */
    public function getDevPackageNames();
}
<?php

namespace Composer\Repository;

interface VersionCacheInterface
{
    /**
     * @param  string             $version
     * @param  string             $identifier
     * @return mixed[]|null|false Package version data if found, false to indicate the identifier is known but has no package, null for an unknown identifier
     */
    public function getVersionPackage($version, $identifier);
}
<?php

namespace Composer\Repository;

/**
 * Thrown when a security problem, like a broken or missing signature
 *
 * @author Eric Daspet <edaspet@survol.fr>
 */
class RepositorySecurityException extends \Exception
{
}
<?php

namespace Composer\Repository;

use Composer\Package\PackageInterface;
use Composer\Package\BasePackage;
use Composer\Semver\Constraint\ConstraintInterface;

/**
 * Repository interface.
 *
 * @author Nils Adermann <naderman@naderman.de>
 * @author Konstantin Kudryashov <ever.zet@gmail.com>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
interface RepositoryInterface extends \Countable
{
    const SEARCH_FULLTEXT = 0;
    const SEARCH_NAME = 1;
    const SEARCH_VENDOR = 2;

/**
     * Checks if specified package registered (installed).
     *
     * @param PackageInterface $package package instance
     *
     * @return bool
     */
    public function hasPackage(PackageInterface $package);

/**
     * Searches for the first match of a package by name and version.
     *
     * @param string                     $name       package name
     * @param string|ConstraintInterface $constraint package version or version constraint to match against
     *
     * @return BasePackage|null
     */
    public function findPackage($name, $constraint);

/**
     * Searches for all packages matching a name and optionally a version.
     *
     * @param string                     $name       package name
     * @param string|ConstraintInterface $constraint package version or version constraint to match against
     *
     * @return BasePackage[]
     */
    public function findPackages($name, $constraint = null);

/**
     * Returns list of registered packages.
     *
     * @return BasePackage[]
     */
    public function getPackages();

/**
     * Returns list of registered packages with the supplied name
     *
     * - The packages returned are the packages found which match the constraints, acceptable stability and stability flags provided
     * - The namesFound returned are names which should be considered as canonically found in this repository, that should not be looked up in any further lower priority repositories
     *
     * @param ConstraintInterface[]                          $packageNameMap        package names pointing to constraints
     * @param array<string, BasePackage::STABILITY_*>        $acceptableStabilities array of stability => BasePackage::STABILITY_* value
     * @param array<string, BasePackage::STABILITY_*>        $stabilityFlags        an array of package name => BasePackage::STABILITY_* value
     * @param array<string, array<string, PackageInterface>> $alreadyLoaded         an array of package name => package version => package
     *
     * @return array
     *
     * @phpstan-param  array<string, ConstraintInterface|null> $packageNameMap
     * @phpstan-return array{namesFound: array<string>, packages: array<BasePackage>}
     */
    public function loadPackages(array $packageNameMap, array $acceptableStabilities, array $stabilityFlags, array $alreadyLoaded = array());

/**
     * Searches the repository for packages containing the query
     *
     * @param string $query search query, for SEARCH_NAME and SEARCH_VENDOR regular expressions metacharacters are supported by implementations, and user input should be escaped through preg_quote by callers
     * @param int    $mode  a set of SEARCH_* constants to search on, implementations should do a best effort only, default is SEARCH_FULLTEXT
     * @param string $type  The type of package to search for. Defaults to all types of packages
     *
     * @return array[] an array of array('name' => '...', 'description' => '...'|null, 'abandoned' => 'string'|true|unset) For SEARCH_VENDOR the name will be in "vendor" form
     * @phpstan-return list<array{name: string, description: ?string, abandoned?: string|true}>
     */
    public function search($query, $mode = 0, $type = null);

/**
     * Returns a list of packages providing a given package name
     *
     * Packages which have the same name as $packageName should not be returned, only those that have a "provide" on it.
     *
     * @param string $packageName package name which must be provided
     *
     * @return array[] an array with the provider name as key and value of array('name' => '...', 'description' => '...', 'type' => '...')
     * @phpstan-return array<string, array{name: string, description: string, type: string}>
     */
    public function getProviders($packageName);

/**
     * Returns a name representing this repository to the user
     *
     * This is best effort and definitely can not always be very precise
     *
     * @return string
     */
    public function getRepoName();
}
<?php

namespace Composer\Repository;

use Composer\Config;
use Composer\IO\IOInterface;
use Composer\Json\JsonFile;
use Composer\Package\CompleteAliasPackage;
use Composer\Package\CompletePackage;
use Composer\Package\Loader\ArrayLoader;
use Composer\Package\Version\VersionGuesser;
use Composer\Package\Version\VersionParser;
use Composer\Pcre\Preg;
use Composer\Util\Platform;
use Composer\Util\ProcessExecutor;
use Composer\Util\Filesystem;
use Composer\Util\Url;
use Composer\Util\Git as GitUtil;

/**
 * This repository allows installing local packages that are not necessarily under their own VCS.
 *
 * The local packages will be symlinked when possible, else they will be copied.
 *
 * @code
 * "require": {
 *     "<vendor>/<local-package>": "*"
 * },
 * "repositories": [
 *     {
 *         "type": "path",
 *         "url": "../../relative/path/to/package/"
 *     },
 *     {
 *         "type": "path",
 *         "url": "/absolute/path/to/package/"
 *     },
 *     {
 *         "type": "path",
 *         "url": "/absolute/path/to/several/packages/*"
 *     },
 *     {
 *         "type": "path",
 *         "url": "../../relative/path/to/package/",
 *         "options": {
 *             "symlink": false
 *         }
 *     },
 * ]
 * @endcode
 *
 * @author Samuel Roze <samuel.roze@gmail.com>
 * @author Johann Reinke <johann.reinke@gmail.com>
 */
class PathRepository extends ArrayRepository implements ConfigurableRepositoryInterface
{
    /**
     * @var ArrayLoader
     */
    private $loader;

/**
     * @var VersionGuesser
     */
    private $versionGuesser;

/**
     * @var string
     */
    private $url;

/**
     * @var mixed[]
     * @phpstan-var array{url: string, options?: array{symlink?: bool, relative?: bool, versions?: array<string, string>}}
     */
    private $repoConfig;

/**
     * @var ProcessExecutor
     */
    private $process;

/**
     * @var array{symlink?: bool, relative?: bool, versions?: array<string, string>}
     */
    private $options;

/**
     * Initializes path repository.
     *
     * @param array{url?: string, options?: array{symlink?: bool, relative?: bool, versions?: array<string, string>}} $repoConfig
     * @param IOInterface $io
     * @param Config      $config
     */
    public function __construct(array $repoConfig, IOInterface $io, Config $config)
    {
        if (!isset($repoConfig['url'])) {
            throw new \RuntimeException('You must specify the `url` configuration for the path repository');
        }

$this->loader = new ArrayLoader(null, true);
        $this->url = Platform::expandPath($repoConfig['url']);
        $this->process = new ProcessExecutor($io);
        $this->versionGuesser = new VersionGuesser($config, $this->process, new VersionParser());
        $this->repoConfig = $repoConfig;
        $this->options = isset($repoConfig['options']) ? $repoConfig['options'] : array();
        if (!isset($this->options['relative'])) {
            $filesystem = new Filesystem();
            $this->options['relative'] = !$filesystem->isAbsolutePath($this->url);
        }

parent::__construct();
    }

public function getRepoName()
    {
        return 'path repo ('.Url::sanitize($this->repoConfig['url']).')';
    }

public function getRepoConfig()
    {
        return $this->repoConfig;
    }

/**
     * Initializes path repository.
     *
     * This method will basically read the folder and add the found package.
     */
    protected function initialize()
    {
        parent::initialize();

$urlMatches = $this->getUrlMatches();

if (empty($urlMatches)) {
            if (Preg::isMatch('{[*{}]}', $this->url)) {
                $url = $this->url;
                while (Preg::isMatch('{[*{}]}', $url)) {
                    $url = dirname($url);
                }
                // the parent directory before any wildcard exists, so we assume it is correctly configured but simply empty
                if (is_dir($url)) {
                    return;
                }
            }

throw new \RuntimeException('The `url` supplied for the path (' . $this->url . ') repository does not exist');
        }

foreach ($urlMatches as $url) {
            $path = realpath($url) . DIRECTORY_SEPARATOR;
            $composerFilePath = $path.'composer.json';

if (!file_exists($composerFilePath)) {
                continue;
            }

$json = file_get_contents($composerFilePath);
            $package = JsonFile::parseJson($json, $composerFilePath);
            $package['dist'] = array(
                'type' => 'path',
                'url' => $url,
                'reference' => sha1($json . serialize($this->options)),
            );
            $package['transport-options'] = $this->options;
            unset($package['transport-options']['versions']);

// use the version provided as option if available
            if (isset($package['name'], $this->options['versions'][$package['name']])) {
                $package['version'] = $this->options['versions'][$package['name']];
            }

// carry over the root package version if this path repo is in the same git repository as root package
            if (!isset($package['version']) && ($rootVersion = Platform::getEnv('COMPOSER_ROOT_VERSION'))) {
                if (
                    0 === $this->process->execute('git rev-parse HEAD', $ref1, $path)
                    && 0 === $this->process->execute('git rev-parse HEAD', $ref2)
                    && $ref1 === $ref2
                ) {
                    $package['version'] = $rootVersion;
                }
            }

$output = '';
            if (is_dir($path . DIRECTORY_SEPARATOR . '.git') && 0 === $this->process->execute('git log -n1 --pretty=%H'.GitUtil::getNoShowSignatureFlag($this->process), $output, $path)) {
                $package['dist']['reference'] = trim($output);
            }

$needsAlias = false;
            if (!isset($package['version'])) {
                $versionData = $this->versionGuesser->guessVersion($package, $path);
                if (is_array($versionData) && $versionData['pretty_version']) {
                    // if there is a feature branch detected, we add a second packages with the feature branch version
                    if (!empty($versionData['feature_pretty_version'])) {
                        $package['version'] = $versionData['feature_pretty_version'];
                        $this->addPackage($this->loader->load($package));
                    }

$package['version'] = $versionData['pretty_version'];
                } else {
                    $package['version'] = 'dev-main';
                    $needsAlias = true;
                }
            }

$package = $this->loader->load($package);
            if ($needsAlias && $package instanceof CompletePackage) {
                // keep a dev-master alias to dev-main for BC
                $package = new CompleteAliasPackage($package, 'dev-master', 'dev-master');
            }
            $this->addPackage($package);
        }
    }

/**
     * Get a list of all (possibly relative) path names matching given url (supports globbing).
     *
     * @return string[]
     */
    private function getUrlMatches()
    {
        $flags = GLOB_MARK | GLOB_ONLYDIR;

if (defined('GLOB_BRACE')) {
            $flags |= GLOB_BRACE;
        } elseif (strpos($this->url, '{') !== false || strpos($this->url, '}') !== false) {
            throw new \RuntimeException('The operating system does not support GLOB_BRACE which is required for the url '. $this->url);
        }

// Ensure environment-specific path separators are normalized to URL separators
        return array_map(function ($val) {
            return rtrim(str_replace(DIRECTORY_SEPARATOR, '/', $val), '/');
        }, glob($this->url, $flags));
    }
}
<?php

namespace Composer\Repository;

/**
 * Installed filesystem repository.
 *
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class InstalledFilesystemRepository extends FilesystemRepository implements InstalledRepositoryInterface
{
    public function getRepoName()
    {
        return 'installed '.parent::getRepoName();
    }

/**
     * @inheritDoc
     */
    public function isFresh()
    {
        return !$this->file->exists();
    }
}
<?php

namespace Composer\Repository;

use Composer\Factory;
use Composer\IO\IOInterface;
use Composer\Config;
use Composer\EventDispatcher\EventDispatcher;
use Composer\Pcre\Preg;
use Composer\Util\HttpDownloader;
use Composer\Util\ProcessExecutor;
use Composer\Json\JsonFile;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class RepositoryFactory
{
    /**
     * @param  IOInterface $io
     * @param  Config      $config
     * @param  string      $repository
     * @param  bool        $allowFilesystem
     * @return array|mixed
     */
    public static function configFromString(IOInterface $io, Config $config, $repository, $allowFilesystem = false)
    {
        if (0 === strpos($repository, 'http')) {
            $repoConfig = array('type' => 'composer', 'url' => $repository);
        } elseif ("json" === pathinfo($repository, PATHINFO_EXTENSION)) {
            $json = new JsonFile($repository, Factory::createHttpDownloader($io, $config));
            $data = $json->read();
            if (!empty($data['packages']) || !empty($data['includes']) || !empty($data['provider-includes'])) {
                $repoConfig = array('type' => 'composer', 'url' => 'file://' . strtr(realpath($repository), '\\', '/'));
            } elseif ($allowFilesystem) {
                $repoConfig = array('type' => 'filesystem', 'json' => $json);
            } else {
                throw new \InvalidArgumentException("Invalid repository URL ($repository) given. This file does not contain a valid composer repository.");
            }
        } elseif (strpos($repository, '{') === 0) {
            // assume it is a json object that makes a repo config
            $repoConfig = JsonFile::parseJson($repository);
        } else {
            throw new \InvalidArgumentException("Invalid repository url ($repository) given. Has to be a .json file, an http url or a JSON object.");
        }

return $repoConfig;
    }

/**
     * @param  IOInterface         $io
     * @param  Config              $config
     * @param  string              $repository
     * @param  bool                $allowFilesystem
     * @return RepositoryInterface
     */
    public static function fromString(IOInterface $io, Config $config, $repository, $allowFilesystem = false, RepositoryManager $rm = null)
    {
        $repoConfig = static::configFromString($io, $config, $repository, $allowFilesystem);

return static::createRepo($io, $config, $repoConfig, $rm);
    }

/**
     * @param  IOInterface         $io
     * @param  Config              $config
     * @param  array<string, mixed> $repoConfig
     * @return RepositoryInterface
     */
    public static function createRepo(IOInterface $io, Config $config, array $repoConfig, RepositoryManager $rm = null)
    {
        if (!$rm) {
            $rm = static::manager($io, $config, Factory::createHttpDownloader($io, $config));
        }
        $repos = self::createRepos($rm, array($repoConfig));

return reset($repos);
    }

/**
     * @param  IOInterface|null       $io
     * @param  Config|null            $config
     * @param  RepositoryManager|null $rm
     * @return RepositoryInterface[]
     */
    public static function defaultRepos(IOInterface $io = null, Config $config = null, RepositoryManager $rm = null)
    {
        if (!$config) {
            $config = Factory::createConfig($io);
        }
        if ($io) {
            $io->loadConfiguration($config);
        }
        if (!$rm) {
            if (!$io) {
                throw new \InvalidArgumentException('This function requires either an IOInterface or a RepositoryManager');
            }
            $rm = static::manager($io, $config, Factory::createHttpDownloader($io, $config));
        }

return self::createRepos($rm, $config->getRepositories());
    }

/**
     * @param  IOInterface       $io
     * @param  Config            $config
     * @param  EventDispatcher   $eventDispatcher
     * @param  HttpDownloader    $httpDownloader
     * @return RepositoryManager
     */
    public static function manager(IOInterface $io, Config $config, HttpDownloader $httpDownloader, EventDispatcher $eventDispatcher = null, ProcessExecutor $process = null)
    {
        $rm = new RepositoryManager($io, $config, $httpDownloader, $eventDispatcher, $process);
        $rm->setRepositoryClass('composer', 'Composer\Repository\ComposerRepository');
        $rm->setRepositoryClass('vcs', 'Composer\Repository\VcsRepository');
        $rm->setRepositoryClass('package', 'Composer\Repository\PackageRepository');
        $rm->setRepositoryClass('pear', 'Composer\Repository\PearRepository');
        $rm->setRepositoryClass('git', 'Composer\Repository\VcsRepository');
        $rm->setRepositoryClass('bitbucket', 'Composer\Repository\VcsRepository');
        $rm->setRepositoryClass('git-bitbucket', 'Composer\Repository\VcsRepository');
        $rm->setRepositoryClass('github', 'Composer\Repository\VcsRepository');
        $rm->setRepositoryClass('gitlab', 'Composer\Repository\VcsRepository');
        $rm->setRepositoryClass('svn', 'Composer\Repository\VcsRepository');
        $rm->setRepositoryClass('fossil', 'Composer\Repository\VcsRepository');
        $rm->setRepositoryClass('perforce', 'Composer\Repository\VcsRepository');
        $rm->setRepositoryClass('hg', 'Composer\Repository\VcsRepository');
        $rm->setRepositoryClass('artifact', 'Composer\Repository\ArtifactRepository');
        $rm->setRepositoryClass('path', 'Composer\Repository\PathRepository');

return $rm;
    }

/**
     * @param array<int|string, mixed> $repoConfigs
     *
     * @return RepositoryInterface[]
     */
    private static function createRepos(RepositoryManager $rm, array $repoConfigs)
    {
        $repos = array();

foreach ($repoConfigs as $index => $repo) {
            if (is_string($repo)) {
                throw new \UnexpectedValueException('"repositories" should be an array of repository definitions, only a single repository was given');
            }
            if (!is_array($repo)) {
                throw new \UnexpectedValueException('Repository "'.$index.'" ('.json_encode($repo).') should be an array, '.gettype($repo).' given');
            }
            if (!isset($repo['type'])) {
                throw new \UnexpectedValueException('Repository "'.$index.'" ('.json_encode($repo).') must have a type defined');
            }

$name = self::generateRepositoryName($index, $repo, $repos);
            if ($repo['type'] === 'filesystem') {
                $repos[$name] = new FilesystemRepository($repo['json']);
            } else {
                $repos[$name] = $rm->createRepository($repo['type'], $repo, $index);
            }
        }

return $repos;
    }

/**
     * @param int|string $index
     * @param array{url?: string} $repo
     * @param array<string, mixed> $existingRepos
     *
     * @return string
     */
    public static function generateRepositoryName($index, array $repo, array $existingRepos)
    {
        $name = is_int($index) && isset($repo['url']) ? Preg::replace('{^https?://}i', '', $repo['url']) : $index;
        while (isset($existingRepos[$name])) {
            $name .= '2';
        }

return $name;
    }
}
<?php

namespace Composer\Repository;

/**
 * Builds list of package from PEAR channel.
 *
 * Packages read from channel are named as 'pear-{channelName}/{packageName}'
 * and has aliased as 'pear-{channelAlias}/{packageName}'
 *
 * @author Benjamin Eberlei <kontakt@beberlei.de>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 * @deprecated
 * @private
 */
class PearRepository extends ArrayRepository
{
    public function __construct()
    {
        throw new \InvalidArgumentException('The PEAR repository has been removed from Composer 2.x');
    }
}
<?php

namespace Composer\Repository;

use Composer\Package\Loader\ArrayLoader;
use Composer\Package\Loader\ValidatingArrayLoader;
use Composer\Pcre\Preg;

/**
 * Package repository.
 *
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class PackageRepository extends ArrayRepository
{
    /** @var mixed[] */
    private $config;

/**
     * Initializes filesystem repository.
     *
     * @param array{package: mixed[]} $config package definition
     */
    public function __construct(array $config)
    {
        parent::__construct();
        $this->config = $config['package'];

// make sure we have an array of package definitions
        if (!is_numeric(key($this->config))) {
            $this->config = array($this->config);
        }
    }

/**
     * Initializes repository (reads file, or remote address).
     */
    protected function initialize()
    {
        parent::initialize();

$loader = new ValidatingArrayLoader(new ArrayLoader(null, true), true);
        foreach ($this->config as $package) {
            try {
                $package = $loader->load($package);
            } catch (\Exception $e) {
                throw new InvalidRepositoryException('A repository of type "package" contains an invalid package definition: '.$e->getMessage()."\n\nInvalid package definition:\n".json_encode($package));
            }

$this->addPackage($package);
        }
    }

public function getRepoName()
    {
        return Preg::replace('{^array }', 'package ', parent::getRepoName());
    }
}
<?php

namespace Composer\Repository;

use Composer\Package\PackageInterface;

/**
 * Composite repository.
 *
 * @author Beau Simensen <beau@dflydev.com>
 */
class CompositeRepository implements RepositoryInterface
{
    /**
     * List of repositories
     * @var RepositoryInterface[]
     */
    private $repositories;

/**
     * Constructor
     * @param RepositoryInterface[] $repositories
     */
    public function __construct(array $repositories)
    {
        $this->repositories = array();
        foreach ($repositories as $repo) {
            $this->addRepository($repo);
        }
    }

public function getRepoName()
    {
        return 'composite repo ('.implode(', ', array_map(function ($repo) {
            return $repo->getRepoName();
        }, $this->repositories)).')';
    }

/**
     * Returns all the wrapped repositories
     *
     * @return RepositoryInterface[]
     */
    public function getRepositories()
    {
        return $this->repositories;
    }

/**
     * @inheritDoc
     */
    public function hasPackage(PackageInterface $package)
    {
        foreach ($this->repositories as $repository) {
            /* @var $repository RepositoryInterface */
            if ($repository->hasPackage($package)) {
                return true;
            }
        }

return false;
    }

/**
     * @inheritDoc
     */
    public function findPackage($name, $constraint)
    {
        foreach ($this->repositories as $repository) {
            /* @var $repository RepositoryInterface */
            $package = $repository->findPackage($name, $constraint);
            if (null !== $package) {
                return $package;
            }
        }

return null;
    }

/**
     * @inheritDoc
     */
    public function findPackages($name, $constraint = null)
    {
        $packages = array();
        foreach ($this->repositories as $repository) {
            /* @var $repository RepositoryInterface */
            $packages[] = $repository->findPackages($name, $constraint);
        }

return $packages ? call_user_func_array('array_merge', $packages) : array();
    }

/**
     * @inheritDoc
     */
    public function loadPackages(array $packageMap, array $acceptableStabilities, array $stabilityFlags, array $alreadyLoaded = array())
    {
        $packages = array();
        $namesFound = array();
        foreach ($this->repositories as $repository) {
            /* @var $repository RepositoryInterface */
            $result = $repository->loadPackages($packageMap, $acceptableStabilities, $stabilityFlags, $alreadyLoaded);
            $packages[] = $result['packages'];
            $namesFound[] = $result['namesFound'];
        }

return array(
            'packages' => $packages ? call_user_func_array('array_merge', $packages) : array(),
            'namesFound' => $namesFound ? array_unique(call_user_func_array('array_merge', $namesFound)) : array(),
        );
    }

/**
     * @inheritDoc
     */
    public function search($query, $mode = 0, $type = null)
    {
        $matches = array();
        foreach ($this->repositories as $repository) {
            /* @var $repository RepositoryInterface */
            $matches[] = $repository->search($query, $mode, $type);
        }

return $matches ? call_user_func_array('array_merge', $matches) : array();
    }

/**
     * @inheritDoc
     */
    public function getPackages()
    {
        $packages = array();
        foreach ($this->repositories as $repository) {
            /* @var $repository RepositoryInterface */
            $packages[] = $repository->getPackages();
        }

return $packages ? call_user_func_array('array_merge', $packages) : array();
    }

/**
     * @inheritDoc
     */
    public function getProviders($packageName)
    {
        $results = array();
        foreach ($this->repositories as $repository) {
            /* @var $repository RepositoryInterface */
            $results[] = $repository->getProviders($packageName);
        }

return $results ? call_user_func_array('array_merge', $results) : array();
    }

/**
     * @return void
     */
    public function removePackage(PackageInterface $package)
    {
        foreach ($this->repositories as $repository) {
            if ($repository instanceof WritableRepositoryInterface) {
                $repository->removePackage($package);
            }
        }
    }

/**
     * @inheritDoc
     */
    #[\ReturnTypeWillChange]
    public function count()
    {
        $total = 0;
        foreach ($this->repositories as $repository) {
            /* @var $repository RepositoryInterface */
            $total += $repository->count();
        }

return $total;
    }

/**
     * Add a repository.
     * @param RepositoryInterface $repository
     *
     * @return void
     */
    public function addRepository(RepositoryInterface $repository)
    {
        if ($repository instanceof self) {
            foreach ($repository->getRepositories() as $repo) {
                $this->addRepository($repo);
            }
        } else {
            $this->repositories[] = $repository;
        }
    }
}
<?php

namespace Composer\Repository;

/**
 * Installable repository interface.
 *
 * Just used to tag installed repositories so the base classes can act differently on Alias packages
 *
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
interface InstalledRepositoryInterface extends WritableRepositoryInterface
{
    /**
     * @return bool true if packages were never installed in this repository
     */
    public function isFresh();
}
<?php

namespace Composer\Repository;

use Composer\Json\JsonFile;
use Composer\Package\Loader\ArrayLoader;
use Composer\Package\RootPackageInterface;
use Composer\Package\AliasPackage;
use Composer\Package\Dumper\ArrayDumper;
use Composer\Installer\InstallationManager;
use Composer\Util\Filesystem;

/**
 * Filesystem repository.
 *
 * @author Konstantin Kudryashov <ever.zet@gmail.com>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class FilesystemRepository extends WritableArrayRepository
{
    /** @var JsonFile */
    protected $file;
    /** @var bool */
    private $dumpVersions;
    /** @var ?RootPackageInterface */
    private $rootPackage;
    /** @var Filesystem */
    private $filesystem;

/**
     * Initializes filesystem repository.
     *
     * @param JsonFile              $repositoryFile repository json file
     * @param bool                  $dumpVersions
     * @param ?RootPackageInterface $rootPackage    Must be provided if $dumpVersions is true
     */
    public function __construct(JsonFile $repositoryFile, $dumpVersions = false, RootPackageInterface $rootPackage = null, Filesystem $filesystem = null)
    {
        parent::__construct();
        $this->file = $repositoryFile;
        $this->dumpVersions = $dumpVersions;
        $this->rootPackage = $rootPackage;
        $this->filesystem = $filesystem ?: new Filesystem;
        if ($dumpVersions && !$rootPackage) {
            throw new \InvalidArgumentException('Expected a root package instance if $dumpVersions is true');
        }
    }

/**
     * Initializes repository (reads file, or remote address).
     */
    protected function initialize()
    {
        parent::initialize();

if (!$this->file->exists()) {
            return;
        }

try {
            $data = $this->file->read();
            if (isset($data['packages'])) {
                $packages = $data['packages'];
            } else {
                $packages = $data;
            }

if (isset($data['dev-package-names'])) {
                $this->setDevPackageNames($data['dev-package-names']);
            }

if (!is_array($packages)) {
                throw new \UnexpectedValueException('Could not parse package list from the repository');
            }
        } catch (\Exception $e) {
            throw new InvalidRepositoryException('Invalid repository data in '.$this->file->getPath().', packages could not be loaded: ['.get_class($e).'] '.$e->getMessage());
        }

$loader = new ArrayLoader(null, true);
        foreach ($packages as $packageData) {
            $package = $loader->load($packageData);
            $this->addPackage($package);
        }
    }

public function reload()
    {
        $this->packages = null;
        $this->initialize();
    }

/**
     * Writes writable repository.
     */
    public function write($devMode, InstallationManager $installationManager)
    {
        $data = array('packages' => array(), 'dev' => $devMode, 'dev-package-names' => array());
        $dumper = new ArrayDumper();

// make sure the directory is created so we can realpath it
        // as realpath() does some additional normalizations with network paths that normalizePath does not
        // and we need to find shortest path correctly
        $repoDir = dirname($this->file->getPath());
        $this->filesystem->ensureDirectoryExists($repoDir);

$repoDir = $this->filesystem->normalizePath(realpath($repoDir));
        $installPaths = array();

foreach ($this->getCanonicalPackages() as $package) {
            $pkgArray = $dumper->dump($package);
            $path = $installationManager->getInstallPath($package);
            $installPath = null;
            if ('' !== $path && null !== $path) {
                $normalizedPath = $this->filesystem->normalizePath($this->filesystem->isAbsolutePath($path) ? $path : getcwd() . '/' . $path);
                $installPath = $this->filesystem->findShortestPath($repoDir, $normalizedPath, true);
            }
            $installPaths[$package->getName()] = $installPath;

$pkgArray['install-path'] = $installPath;
            $data['packages'][] = $pkgArray;

// only write to the files the names which are really installed, as we receive the full list
            // of dev package names before they get installed during composer install
            if (in_array($package->getName(), $this->devPackageNames, true)) {
                $data['dev-package-names'][] = $package->getName();
            }
        }

sort($data['dev-package-names']);
        usort($data['packages'], function ($a, $b) {
            return strcmp($a['name'], $b['name']);
        });

$this->file->write($data);

if ($this->dumpVersions) {
            $versions = $this->generateInstalledVersions($installationManager, $installPaths, $devMode, $repoDir);

$this->filesystem->filePutContentsIfModified($repoDir.'/installed.php', '<?php return ' . $this->dumpToPhpCode($versions) . ';'."\n");
            $installedVersionsClass = file_get_contents(__DIR__.'/../InstalledVersions.php');
            $this->filesystem->filePutContentsIfModified($repoDir.'/InstalledVersions.php', $installedVersionsClass);

\Composer\InstalledVersions::reload($versions);
        }
    }

/**
     * @param array<mixed> $array
     * @param int $level
     *
     * @return string
     */
    private function dumpToPhpCode(array $array = array(), $level = 0)
    {
        $lines = "array(\n";
        $level++;

foreach ($array as $key => $value) {
            $lines .= str_repeat('    ', $level);
            $lines .= is_int($key) ? $key . ' => ' : '\'' . $key . '\' => ';

if (is_array($value)) {
                if (!empty($value)) {
                    $lines .= $this->dumpToPhpCode($value, $level);
                } else {
                    $lines .= "array(),\n";
                }
            } elseif ($key === 'install_path' && is_string($value)) {
                if ($this->filesystem->isAbsolutePath($value)) {
                    $lines .= var_export($value, true) . ",\n";
                } else {
                    $lines .= "__DIR__ . " . var_export('/' . $value, true) . ",\n";
                }
            } else {
                $lines .= var_export($value, true) . ",\n";
            }
        }

$lines .= str_repeat('    ', $level - 1) . ')' . ($level - 1 == 0 ? '' : ",\n");

return $lines;
    }

/**
     * @param array<string, string> $installPaths
     * @param bool $devMode
     * @param string $repoDir
     *
     * @return ?array<mixed>
     */
    private function generateInstalledVersions(InstallationManager $installationManager, array $installPaths, $devMode, $repoDir)
    {
        if (!$this->dumpVersions) {
            return null;
        }

$devPackages = array_flip($this->devPackageNames);
        $versions = array('versions' => array());
        $packages = $this->getPackages();
        $packages[] = $rootPackage = $this->rootPackage;
        while ($rootPackage instanceof AliasPackage) {
            $rootPackage = $rootPackage->getAliasOf();
            $packages[] = $rootPackage;
        }

// add real installed packages
        foreach ($packages as $package) {
            if ($package instanceof AliasPackage) {
                continue;
            }

$reference = null;
            if ($package->getInstallationSource()) {
                $reference = $package->getInstallationSource() === 'source' ? $package->getSourceReference() : $package->getDistReference();
            }
            if (null === $reference) {
                $reference = ($package->getSourceReference() ?: $package->getDistReference()) ?: null;
            }

if ($package instanceof RootPackageInterface) {
                $to = $this->filesystem->normalizePath(realpath(getcwd()));
                $installPath = $this->filesystem->findShortestPath($repoDir, $to, true);
            } else {
                $installPath = $installPaths[$package->getName()];
            }

$versions['versions'][$package->getName()] = array(
                'pretty_version' => $package->getPrettyVersion(),
                'version' => $package->getVersion(),
                'type' => $package->getType(),
                'install_path' => $installPath,
                'aliases' => array(),
                'reference' => $reference,
                'dev_requirement' => isset($devPackages[$package->getName()]),
            );
            if ($package instanceof RootPackageInterface) {
                $versions['root'] = $versions['versions'][$package->getName()];
                unset($versions['root']['dev_requirement']);
                $versions['root']['name'] = $package->getName();
                $versions['root']['dev'] = $devMode;
            }
        }

// add provided/replaced packages
        foreach ($packages as $package) {
            $isDevPackage = isset($devPackages[$package->getName()]);
            foreach ($package->getReplaces() as $replace) {
                // exclude platform replaces as when they are really there we can not check for their presence
                if (PlatformRepository::isPlatformPackage($replace->getTarget())) {
                    continue;
                }
                if (!isset($versions['versions'][$replace->getTarget()]['dev_requirement'])) {
                    $versions['versions'][$replace->getTarget()]['dev_requirement'] = $isDevPackage;
                } elseif (!$isDevPackage) {
                    $versions['versions'][$replace->getTarget()]['dev_requirement'] = false;
                }
                $replaced = $replace->getPrettyConstraint();
                if ($replaced === 'self.version') {
                    $replaced = $package->getPrettyVersion();
                }
                if (!isset($versions['versions'][$replace->getTarget()]['replaced']) || !in_array($replaced, $versions['versions'][$replace->getTarget()]['replaced'], true)) {
                    $versions['versions'][$replace->getTarget()]['replaced'][] = $replaced;
                }
            }
            foreach ($package->getProvides() as $provide) {
                // exclude platform provides as when they are really there we can not check for their presence
                if (PlatformRepository::isPlatformPackage($provide->getTarget())) {
                    continue;
                }
                if (!isset($versions['versions'][$provide->getTarget()]['dev_requirement'])) {
                    $versions['versions'][$provide->getTarget()]['dev_requirement'] = $isDevPackage;
                } elseif (!$isDevPackage) {
                    $versions['versions'][$provide->getTarget()]['dev_requirement'] = false;
                }
                $provided = $provide->getPrettyConstraint();
                if ($provided === 'self.version') {
                    $provided = $package->getPrettyVersion();
                }
                if (!isset($versions['versions'][$provide->getTarget()]['provided']) || !in_array($provided, $versions['versions'][$provide->getTarget()]['provided'], true)) {
                    $versions['versions'][$provide->getTarget()]['provided'][] = $provided;
                }
            }
        }

// add aliases
        foreach ($packages as $package) {
            if (!$package instanceof AliasPackage) {
                continue;
            }
            $versions['versions'][$package->getName()]['aliases'][] = $package->getPrettyVersion();
            if ($package instanceof RootPackageInterface) {
                $versions['root']['aliases'][] = $package->getPrettyVersion();
            }
        }

ksort($versions['versions']);
        ksort($versions);

return $versions;
    }
}
<?php

namespace Composer\Repository\Vcs;

use Composer\Config;
use Composer\Downloader\TransportException;
use Composer\Json\JsonFile;
use Composer\Cache;
use Composer\IO\IOInterface;
use Composer\Pcre\Preg;
use Composer\Util\GitHub;
use Composer\Util\Http\Response;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class GitHubDriver extends VcsDriver
{
    /** @var string */
    protected $owner;
    /** @var string */
    protected $repository;
    /** @var array<string, string> Map of tag name to identifier */
    protected $tags;
    /** @var array<string, string> Map of branch name to identifier */
    protected $branches;
    /** @var string */
    protected $rootIdentifier;
    /** @var mixed[] */
    protected $repoData;
    /** @var bool */
    protected $hasIssues = false;
    /** @var bool */
    protected $isPrivate = false;
    /** @var bool */
    private $isArchived = false;
    /** @var array<int, array{type: string, url: string}>|false|null */
    private $fundingInfo;

/**
     * Git Driver
     *
     * @var ?GitDriver
     */
    protected $gitDriver = null;

/**
     * @inheritDoc
     */
    public function initialize()
    {
        Preg::match('#^(?:(?:https?|git)://([^/]+)/|git@([^:]+):/?)([^/]+)/(.+?)(?:\.git|/)?$#', $this->url, $match);
        $this->owner = $match[3];
        $this->repository = $match[4];
        $this->originUrl = strtolower(!empty($match[1]) ? $match[1] : $match[2]);
        if ($this->originUrl === 'www.github.com') {
            $this->originUrl = 'github.com';
        }
        $this->cache = new Cache($this->io, $this->config->get('cache-repo-dir').'/'.$this->originUrl.'/'.$this->owner.'/'.$this->repository);
        $this->cache->setReadOnly($this->config->get('cache-read-only'));

if ($this->config->get('use-github-api') === false || (isset($this->repoConfig['no-api']) && $this->repoConfig['no-api'])) {
            $this->setupGitDriver($this->url);

return;
        }

$this->fetchRootIdentifier();
    }

/**
     * @return string
     */
    public function getRepositoryUrl()
    {
        return 'https://'.$this->originUrl.'/'.$this->owner.'/'.$this->repository;
    }

/**
     * @inheritDoc
     */
    public function getRootIdentifier()
    {
        if ($this->gitDriver) {
            return $this->gitDriver->getRootIdentifier();
        }

return $this->rootIdentifier;
    }

/**
     * @inheritDoc
     */
    public function getUrl()
    {
        if ($this->gitDriver) {
            return $this->gitDriver->getUrl();
        }

return 'https://' . $this->originUrl . '/'.$this->owner.'/'.$this->repository.'.git';
    }

/**
     * @return string
     */
    protected function getApiUrl()
    {
        if ('github.com' === $this->originUrl) {
            $apiUrl = 'api.github.com';
        } else {
            $apiUrl = $this->originUrl . '/api/v3';
        }

return 'https://' . $apiUrl;
    }

/**
     * @inheritDoc
     */
    public function getSource($identifier)
    {
        if ($this->gitDriver) {
            return $this->gitDriver->getSource($identifier);
        }
        if ($this->isPrivate) {
            // Private GitHub repositories should be accessed using the
            // SSH version of the URL.
            $url = $this->generateSshUrl();
        } else {
            $url = $this->getUrl();
        }

return array('type' => 'git', 'url' => $url, 'reference' => $identifier);
    }

/**
     * @inheritDoc
     */
    public function getDist($identifier)
    {
        $url = $this->getApiUrl() . '/repos/'.$this->owner.'/'.$this->repository.'/zipball/'.$identifier;

return array('type' => 'zip', 'url' => $url, 'reference' => $identifier, 'shasum' => '');
    }

/**
     * @inheritDoc
     */
    public function getComposerInformation($identifier)
    {
        if ($this->gitDriver) {
            return $this->gitDriver->getComposerInformation($identifier);
        }

if (!isset($this->infoCache[$identifier])) {
            if ($this->shouldCache($identifier) && $res = $this->cache->read($identifier)) {
                $composer = JsonFile::parseJson($res);
            } else {
                $composer = $this->getBaseComposerInformation($identifier);

if ($this->shouldCache($identifier)) {
                    $this->cache->write($identifier, json_encode($composer));
                }
            }

if ($composer) {
                // specials for github
                if (!isset($composer['support']['source'])) {
                    $label = array_search($identifier, $this->getTags()) ?: array_search($identifier, $this->getBranches()) ?: $identifier;
                    $composer['support']['source'] = sprintf('https://%s/%s/%s/tree/%s', $this->originUrl, $this->owner, $this->repository, $label);
                }
                if (!isset($composer['support']['issues']) && $this->hasIssues) {
                    $composer['support']['issues'] = sprintf('https://%s/%s/%s/issues', $this->originUrl, $this->owner, $this->repository);
                }
                if (!isset($composer['abandoned']) && $this->isArchived) {
                    $composer['abandoned'] = true;
                }
                if (!isset($composer['funding']) && $funding = $this->getFundingInfo()) {
                    $composer['funding'] = $funding;
                }
            }

$this->infoCache[$identifier] = $composer;
        }

return $this->infoCache[$identifier];
    }

/**
     * @return array<int, array{type: string, url: string}>|false
     */
    private function getFundingInfo()
    {
        if (null !== $this->fundingInfo) {
            return $this->fundingInfo;
        }

if ($this->originUrl !== 'github.com') {
            return $this->fundingInfo = false;
        }

foreach (array($this->getApiUrl() . '/repos/'.$this->owner.'/'.$this->repository.'/contents/.github/FUNDING.yml', $this->getApiUrl() . '/repos/'.$this->owner.'/.github/contents/FUNDING.yml') as $file) {
            try {
                $response = $this->httpDownloader->get($file, array(
                    'retry-auth-failure' => false,
                ))->decodeJson();
            } catch (TransportException $e) {
                continue;
            }
            if (empty($response['content']) || $response['encoding'] !== 'base64' || !($funding = base64_decode($response['content']))) {
                continue;
            }
            break;
        }
        if (empty($funding)) {
            return $this->fundingInfo = false;
        }

$result = array();
        $key = null;
        foreach (Preg::split('{\r?\n}', $funding) as $line) {
            $line = trim($line);
            if (Preg::isMatch('{^(\w+)\s*:\s*(.+)$}', $line, $match)) {
                if (Preg::isMatch('{^\[(.*)\](?:\s*#.*)?$}', $match[2], $match2)) {
                    foreach (array_map('trim', Preg::split('{[\'"]?\s*,\s*[\'"]?}', $match2[1])) as $item) {
                        $result[] = array('type' => $match[1], 'url' => trim($item, '"\' '));
                    }
                } elseif (Preg::isMatch('{^([^#].*?)(\s+#.*)?$}', $match[2], $match2)) {
                    $result[] = array('type' => $match[1], 'url' => trim($match2[1], '"\' '));
                }
                $key = null;
            } elseif (Preg::isMatch('{^(\w+)\s*:\s*#\s*$}', $line, $match)) {
                $key = $match[1];
            } elseif ($key && Preg::isMatch('{^-\s*(.+)(\s+#.*)?$}', $line, $match)) {
                $result[] = array('type' => $key, 'url' => trim($match[1], '"\' '));
            }
        }

foreach ($result as $key => $item) {
            switch ($item['type']) {
                case 'tidelift':
                    $result[$key]['url'] = 'https://tidelift.com/funding/github/' . $item['url'];
                    break;
                case 'github':
                    $result[$key]['url'] = 'https://github.com/' . basename($item['url']);
                    break;
                case 'patreon':
                    $result[$key]['url'] = 'https://www.patreon.com/' . basename($item['url']);
                    break;
                case 'otechie':
                    $result[$key]['url'] = 'https://otechie.com/' . basename($item['url']);
                    break;
                case 'open_collective':
                    $result[$key]['url'] = 'https://opencollective.com/' . basename($item['url']);
                    break;
                case 'liberapay':
                    $result[$key]['url'] = 'https://liberapay.com/' . basename($item['url']);
                    break;
                case 'ko_fi':
                    $result[$key]['url'] = 'https://ko-fi.com/' . basename($item['url']);
                    break;
                case 'issuehunt':
                    $result[$key]['url'] = 'https://issuehunt.io/r/' . $item['url'];
                    break;
                case 'community_bridge':
                    $result[$key]['url'] = 'https://funding.communitybridge.org/projects/' . basename($item['url']);
                    break;
            }
        }

return $this->fundingInfo = $result;
    }

/**
     * @inheritDoc
     */
    public function getFileContent($file, $identifier)
    {
        if ($this->gitDriver) {
            return $this->gitDriver->getFileContent($file, $identifier);
        }

$resource = $this->getApiUrl() . '/repos/'.$this->owner.'/'.$this->repository.'/contents/' . $file . '?ref='.urlencode($identifier);
        $resource = $this->getContents($resource)->decodeJson();
        if (empty($resource['content']) || $resource['encoding'] !== 'base64' || !($content = base64_decode($resource['content']))) {
            throw new \RuntimeException('Could not retrieve ' . $file . ' for '.$identifier);
        }

return $content;
    }

/**
     * @inheritDoc
     */
    public function getChangeDate($identifier)
    {
        if ($this->gitDriver) {
            return $this->gitDriver->getChangeDate($identifier);
        }

$resource = $this->getApiUrl() . '/repos/'.$this->owner.'/'.$this->repository.'/commits/'.urlencode($identifier);
        $commit = $this->getContents($resource)->decodeJson();

return new \DateTime($commit['commit']['committer']['date']);
    }

/**
     * @inheritDoc
     */
    public function getTags()
    {
        if ($this->gitDriver) {
            return $this->gitDriver->getTags();
        }
        if (null === $this->tags) {
            $tags = array();
            $resource = $this->getApiUrl() . '/repos/'.$this->owner.'/'.$this->repository.'/tags?per_page=100';

do {
                $response = $this->getContents($resource);
                $tagsData = $response->decodeJson();
                foreach ($tagsData as $tag) {
                    $tags[$tag['name']] = $tag['commit']['sha'];
                }

$resource = $this->getNextPage($response);
            } while ($resource);

$this->tags = $tags;
        }

return $this->tags;
    }

/**
     * @inheritDoc
     */
    public function getBranches()
    {
        if ($this->gitDriver) {
            return $this->gitDriver->getBranches();
        }
        if (null === $this->branches) {
            $branches = array();
            $resource = $this->getApiUrl() . '/repos/'.$this->owner.'/'.$this->repository.'/git/refs/heads?per_page=100';

do {
                $response = $this->getContents($resource);
                $branchData = $response->decodeJson();
                foreach ($branchData as $branch) {
                    $name = substr($branch['ref'], 11);
                    if ($name !== 'gh-pages') {
                        $branches[$name] = $branch['object']['sha'];
                    }
                }

$resource = $this->getNextPage($response);
            } while ($resource);

$this->branches = $branches;
        }

return $this->branches;
    }

/**
     * @inheritDoc
     */
    public static function supports(IOInterface $io, Config $config, $url, $deep = false)
    {
        if (!Preg::isMatch('#^((?:https?|git)://([^/]+)/|git@([^:]+):/?)([^/]+)/(.+?)(?:\.git|/)?$#', $url, $matches)) {
            return false;
        }

$originUrl = !empty($matches[2]) ? $matches[2] : $matches[3];
        if (!in_array(strtolower(Preg::replace('{^www\.}i', '', $originUrl)), $config->get('github-domains'))) {
            return false;
        }

if (!extension_loaded('openssl')) {
            $io->writeError('Skipping GitHub driver for '.$url.' because the OpenSSL PHP extension is missing.', true, IOInterface::VERBOSE);

return false;
        }

return true;
    }

/**
     * Gives back the loaded <github-api>/repos/<owner>/<repo> result
     *
     * @return mixed[]|null
     */
    public function getRepoData()
    {
        $this->fetchRootIdentifier();

return $this->repoData;
    }

/**
     * Generate an SSH URL
     *
     * @return string
     */
    protected function generateSshUrl()
    {
        if (false !== strpos($this->originUrl, ':')) {
            return 'ssh://git@' . $this->originUrl . '/'.$this->owner.'/'.$this->repository.'.git';
        }

return 'git@' . $this->originUrl . ':'.$this->owner.'/'.$this->repository.'.git';
    }

/**
     * @inheritDoc
     *
     * @param bool $fetchingRepoData
     */
    protected function getContents($url, $fetchingRepoData = false)
    {
        try {
            return parent::getContents($url);
        } catch (TransportException $e) {
            $gitHubUtil = new GitHub($this->io, $this->config, $this->process, $this->httpDownloader);

switch ($e->getCode()) {
                case 401:
                case 404:
                    // try to authorize only if we are fetching the main /repos/foo/bar data, otherwise it must be a real 404
                    if (!$fetchingRepoData) {
                        throw $e;
                    }

if ($gitHubUtil->authorizeOAuth($this->originUrl)) {
                        return parent::getContents($url);
                    }

if (!$this->io->isInteractive()) {
                        $this->attemptCloneFallback();

return new Response(array('url' => 'dummy'), 200, array(), 'null');
                    }

$scopesIssued = array();
                    $scopesNeeded = array();
                    if ($headers = $e->getHeaders()) {
                        if ($scopes = Response::findHeaderValue($headers, 'X-OAuth-Scopes')) {
                            $scopesIssued = explode(' ', $scopes);
                        }
                        if ($scopes = Response::findHeaderValue($headers, 'X-Accepted-OAuth-Scopes')) {
                            $scopesNeeded = explode(' ', $scopes);
                        }
                    }
                    $scopesFailed = array_diff($scopesNeeded, $scopesIssued);
                    // non-authenticated requests get no scopesNeeded, so ask for credentials
                    // authenticated requests which failed some scopes should ask for new credentials too
                    if (!$headers || !count($scopesNeeded) || count($scopesFailed)) {
                        $gitHubUtil->authorizeOAuthInteractively($this->originUrl, 'Your GitHub credentials are required to fetch private repository metadata (<info>'.$this->url.'</info>)');
                    }

return parent::getContents($url);

case 403:
                    if (!$this->io->hasAuthentication($this->originUrl) && $gitHubUtil->authorizeOAuth($this->originUrl)) {
                        return parent::getContents($url);
                    }

if (!$this->io->isInteractive() && $fetchingRepoData) {
                        $this->attemptCloneFallback();

return new Response(array('url' => 'dummy'), 200, array(), 'null');
                    }

$rateLimited = $gitHubUtil->isRateLimited((array) $e->getHeaders());

if (!$this->io->hasAuthentication($this->originUrl)) {
                        if (!$this->io->isInteractive()) {
                            $this->io->writeError('<error>GitHub API limit exhausted. Failed to get metadata for the '.$this->url.' repository, try running in interactive mode so that you can enter your GitHub credentials to increase the API limit</error>');
                            throw $e;
                        }

$gitHubUtil->authorizeOAuthInteractively($this->originUrl, 'API limit exhausted. Enter your GitHub credentials to get a larger API limit (<info>'.$this->url.'</info>)');

return parent::getContents($url);
                    }

if ($rateLimited) {
                        $rateLimit = $gitHubUtil->getRateLimit($e->getHeaders());
                        $this->io->writeError(sprintf(
                            '<error>GitHub API limit (%d calls/hr) is exhausted. You are already authorized so you have to wait until %s before doing more requests</error>',
                            $rateLimit['limit'],
                            $rateLimit['reset']
                        ));
                    }

throw $e;

default:
                    throw $e;
            }
        }
    }

/**
     * Fetch root identifier from GitHub
     *
     * @return void
     * @throws TransportException
     */
    protected function fetchRootIdentifier()
    {
        if ($this->repoData) {
            return;
        }

$repoDataUrl = $this->getApiUrl() . '/repos/'.$this->owner.'/'.$this->repository;

try {
            $this->repoData = $this->getContents($repoDataUrl, true)->decodeJson();
        } catch (TransportException $e) {
            if ($e->getCode() === 499) {
                $this->attemptCloneFallback();
            } else {
                throw $e;
            }
        }
        if (null === $this->repoData && null !== $this->gitDriver) {
            return;
        }

$this->owner = $this->repoData['owner']['login'];
        $this->repository = $this->repoData['name'];

$this->isPrivate = !empty($this->repoData['private']);
        if (isset($this->repoData['default_branch'])) {
            $this->rootIdentifier = $this->repoData['default_branch'];
        } elseif (isset($this->repoData['master_branch'])) {
            $this->rootIdentifier = $this->repoData['master_branch'];
        } else {
            $this->rootIdentifier = 'master';
        }
        $this->hasIssues = !empty($this->repoData['has_issues']);
        $this->isArchived = !empty($this->repoData['archived']);
    }

/**
     * @phpstan-impure
     *
     * @return true
     * @throws \RuntimeException
     */
    protected function attemptCloneFallback()
    {
        $this->isPrivate = true;

try {
            // If this repository may be private (hard to say for sure,
            // GitHub returns 404 for private repositories) and we
            // cannot ask for authentication credentials (because we
            // are not interactive) then we fallback to GitDriver.
            $this->setupGitDriver($this->generateSshUrl());

return true;
        } catch (\RuntimeException $e) {
            $this->gitDriver = null;

$this->io->writeError('<error>Failed to clone the '.$this->generateSshUrl().' repository, try running in interactive mode so that you can enter your GitHub credentials</error>');
            throw $e;
        }
    }

/**
     * @param string $url
     *
     * @return void
     */
    protected function setupGitDriver($url)
    {
        $this->gitDriver = new GitDriver(
            array('url' => $url),
            $this->io,
            $this->config,
            $this->httpDownloader,
            $this->process
        );
        $this->gitDriver->initialize();
    }

/**
     * @return string|null
     */
    protected function getNextPage(Response $response)
    {
        $header = $response->getHeader('link');
        if (!$header) {
            return null;
        }

$links = explode(',', $header);
        foreach ($links as $link) {
            if (Preg::isMatch('{<(.+?)>; *rel="next"}', $link, $match)) {
                return $match[1];
            }
        }

return null;
    }
}
<?php

namespace Composer\Repository\Vcs;

use Composer\Config;
use Composer\Cache;
use Composer\IO\IOInterface;
use Composer\Pcre\Preg;
use Composer\Util\ProcessExecutor;
use Composer\Util\Perforce;

/**
 * @author Matt Whittom <Matt.Whittom@veteransunited.com>
 */
class PerforceDriver extends VcsDriver
{
    /** @var string */
    protected $depot;
    /** @var string */
    protected $branch;
    /** @var ?Perforce */
    protected $perforce = null;

/**
     * @inheritDoc
     */
    public function initialize()
    {
        $this->depot = $this->repoConfig['depot'];
        $this->branch = '';
        if (!empty($this->repoConfig['branch'])) {
            $this->branch = $this->repoConfig['branch'];
        }

$this->initPerforce($this->repoConfig);
        $this->perforce->p4Login();
        $this->perforce->checkStream();

$this->perforce->writeP4ClientSpec();
        $this->perforce->connectClient();
    }

/**
     * @param array<string, mixed> $repoConfig
     *
     * @return void
     */
    private function initPerforce($repoConfig)
    {
        if (!empty($this->perforce)) {
            return;
        }

if (!Cache::isUsable((string) $this->config->get('cache-vcs-dir'))) {
            throw new \RuntimeException('PerforceDriver requires a usable cache directory, and it looks like you set it to be disabled');
        }

$repoDir = $this->config->get('cache-vcs-dir') . '/' . $this->depot;
        $this->perforce = Perforce::create($repoConfig, $this->getUrl(), $repoDir, $this->process, $this->io);
    }

/**
     * @inheritDoc
     */
    public function getFileContent($file, $identifier)
    {
        return $this->perforce->getFileContent($file, $identifier);
    }

/**
     * @inheritDoc
     */
    public function getChangeDate($identifier)
    {
        return null;
    }

/**
     * @inheritDoc
     */
    public function getRootIdentifier()
    {
        return $this->branch;
    }

/**
     * @inheritDoc
     */
    public function getBranches()
    {
        return $this->perforce->getBranches();
    }

/**
     * @inheritDoc
     */
    public function getTags()
    {
        return $this->perforce->getTags();
    }

/**
     * @inheritDoc
     */
    public function getDist($identifier)
    {
        return null;
    }

/**
     * @inheritDoc
     */
    public function getSource($identifier)
    {
        return array(
            'type' => 'perforce',
            'url' => $this->repoConfig['url'],
            'reference' => $identifier,
            'p4user' => $this->perforce->getUser(),
        );
    }

/**
     * @inheritDoc
     */
    public function getUrl()
    {
        return $this->url;
    }

/**
     * @inheritDoc
     */
    public function hasComposerFile($identifier)
    {
        $composerInfo = $this->perforce->getComposerInformation('//' . $this->depot . '/' . $identifier);

return !empty($composerInfo);
    }

/**
     * @inheritDoc
     */
    public function getContents($url)
    {
        throw new \BadMethodCallException('Not implemented/used in PerforceDriver');
    }

/**
     * @inheritDoc
     */
    public static function supports(IOInterface $io, Config $config, $url, $deep = false)
    {
        if ($deep || Preg::isMatch('#\b(perforce|p4)\b#i', $url)) {
            return Perforce::checkServerExists($url, new ProcessExecutor($io));
        }

return false;
    }

/**
     * @inheritDoc
     */
    public function cleanup()
    {
        $this->perforce->cleanupClientSpec();
        $this->perforce = null;
    }

/**
     * @return string
     */
    public function getDepot()
    {
        return $this->depot;
    }

/**
     * @return string
     */
    public function getBranch()
    {
        return $this->branch;
    }
}
<?php

namespace Composer\Repository\Vcs;

use Composer\Pcre\Preg;
use Composer\Util\ProcessExecutor;
use Composer\Util\Filesystem;
use Composer\Util\Url;
use Composer\Util\Git as GitUtil;
use Composer\IO\IOInterface;
use Composer\Cache;
use Composer\Config;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class GitDriver extends VcsDriver
{
    /** @var array<int|string, string> Map of tag name (can be turned to an int by php if it is a numeric name) to identifier */
    protected $tags;
    /** @var array<int|string, string> Map of branch name (can be turned to an int by php if it is a numeric name) to identifier */
    protected $branches;
    /** @var string */
    protected $rootIdentifier;
    /** @var string */
    protected $repoDir;

/**
     * @inheritDoc
     */
    public function initialize()
    {
        if (Filesystem::isLocalPath($this->url)) {
            $this->url = Preg::replace('{[\\/]\.git/?$}', '', $this->url);
            if (!is_dir($this->url)) {
                throw new \RuntimeException('Failed to read package information from '.$this->url.' as the path does not exist');
            }
            $this->repoDir = $this->url;
            $cacheUrl = realpath($this->url);
        } else {
            if (!Cache::isUsable((string) $this->config->get('cache-vcs-dir'))) {
                throw new \RuntimeException('GitDriver requires a usable cache directory, and it looks like you set it to be disabled');
            }

$this->repoDir = $this->config->get('cache-vcs-dir') . '/' . Preg::replace('{[^a-z0-9.]}i', '-', $this->url) . '/';

GitUtil::cleanEnv();

$fs = new Filesystem();
            $fs->ensureDirectoryExists(dirname($this->repoDir));

if (!is_writable(dirname($this->repoDir))) {
                throw new \RuntimeException('Can not clone '.$this->url.' to access package information. The "'.dirname($this->repoDir).'" directory is not writable by the current user.');
            }

if (Preg::isMatch('{^ssh://[^@]+@[^:]+:[^0-9]+}', $this->url)) {
                throw new \InvalidArgumentException('The source URL '.$this->url.' is invalid, ssh URLs should have a port number after ":".'."\n".'Use ssh://git@example.com:22/path or just git@example.com:path if you do not want to provide a password or custom port.');
            }

$gitUtil = new GitUtil($this->io, $this->config, $this->process, $fs);
            if (!$gitUtil->syncMirror($this->url, $this->repoDir)) {
                if (!is_dir($this->repoDir)) {
                    throw new \RuntimeException('Failed to clone '.$this->url.' to read package information from it');
                }
                $this->io->writeError('<error>Failed to update '.$this->url.', package information from this repository may be outdated</error>');
            }

$cacheUrl = $this->url;
        }

$this->getTags();
        $this->getBranches();

$this->cache = new Cache($this->io, $this->config->get('cache-repo-dir').'/'.Preg::replace('{[^a-z0-9.]}i', '-', Url::sanitize($cacheUrl)));
        $this->cache->setReadOnly($this->config->get('cache-read-only'));
    }

/**
     * @inheritDoc
     */
    public function getRootIdentifier()
    {
        if (null === $this->rootIdentifier) {
            $this->rootIdentifier = 'master';

// select currently checked out branch if master is not available
            $this->process->execute('git branch --no-color', $output, $this->repoDir);
            $branches = $this->process->splitLines($output);
            if (!in_array('* master', $branches)) {
                foreach ($branches as $branch) {
                    if ($branch && Preg::isMatch('{^\* +(\S+)}', $branch, $match)) {
                        $this->rootIdentifier = $match[1];
                        break;
                    }
                }
            }
        }

return $this->rootIdentifier;
    }

/**
     * @inheritDoc
     */
    public function getUrl()
    {
        return $this->url;
    }

/**
     * @inheritDoc
     */
    public function getSource($identifier)
    {
        return array('type' => 'git', 'url' => $this->getUrl(), 'reference' => $identifier);
    }

/**
     * @inheritDoc
     */
    public function getDist($identifier)
    {
        return null;
    }

/**
     * @inheritDoc
     */
    public function getFileContent($file, $identifier)
    {
        $resource = sprintf('%s:%s', ProcessExecutor::escape($identifier), ProcessExecutor::escape($file));
        $this->process->execute(sprintf('git show %s', $resource), $content, $this->repoDir);

if (!trim($content)) {
            return null;
        }

return $content;
    }

/**
     * @inheritDoc
     */
    public function getChangeDate($identifier)
    {
        $this->process->execute(sprintf(
            'git -c log.showSignature=false log -1 --format=%%at %s',
            ProcessExecutor::escape($identifier)
        ), $output, $this->repoDir);

return new \DateTime('@'.trim($output), new \DateTimeZone('UTC'));
    }

/**
     * @inheritDoc
     */
    public function getTags()
    {
        if (null === $this->tags) {
            $this->tags = array();

$this->process->execute('git show-ref --tags --dereference', $output, $this->repoDir);
            foreach ($output = $this->process->splitLines($output) as $tag) {
                if ($tag && Preg::isMatch('{^([a-f0-9]{40}) refs/tags/(\S+?)(\^\{\})?$}', $tag, $match)) {
                    $this->tags[$match[2]] = (string) $match[1];
                }
            }
        }

return $this->tags;
    }

/**
     * @inheritDoc
     */
    public function getBranches()
    {
        if (null === $this->branches) {
            $branches = array();

$this->process->execute('git branch --no-color --no-abbrev -v', $output, $this->repoDir);
            foreach ($this->process->splitLines($output) as $branch) {
                if ($branch && !Preg::isMatch('{^ *[^/]+/HEAD }', $branch)) {
                    if (Preg::isMatch('{^(?:\* )? *(\S+) *([a-f0-9]+)(?: .*)?$}', $branch, $match)) {
                        $branches[$match[1]] = $match[2];
                    }
                }
            }

$this->branches = $branches;
        }

return $this->branches;
    }

/**
     * @inheritDoc
     */
    public static function supports(IOInterface $io, Config $config, $url, $deep = false)
    {
        if (Preg::isMatch('#(^git://|\.git/?$|git(?:olite)?@|//git\.|//github.com/)#i', $url)) {
            return true;
        }

// local filesystem
        if (Filesystem::isLocalPath($url)) {
            $url = Filesystem::getPlatformPath($url);
            if (!is_dir($url)) {
                return false;
            }

$process = new ProcessExecutor($io);
            // check whether there is a git repo in that path
            if ($process->execute('git tag', $output, $url) === 0) {
                return true;
            }
        }

if (!$deep) {
            return false;
        }

$gitUtil = new GitUtil($io, $config, new ProcessExecutor($io), new Filesystem());
        GitUtil::cleanEnv();

try {
            $gitUtil->runCommand(function ($url) {
                return 'git ls-remote --heads -- ' . ProcessExecutor::escape($url);
            }, $url, sys_get_temp_dir());
        } catch (\RuntimeException $e) {
            return false;
        }

return true;
    }
}
<?php

namespace Composer\Repository\Vcs;

use Composer\Cache;
use Composer\Config;
use Composer\Json\JsonFile;
use Composer\Pcre\Preg;
use Composer\Util\ProcessExecutor;
use Composer\Util\Filesystem;
use Composer\Util\Url;
use Composer\Util\Svn as SvnUtil;
use Composer\IO\IOInterface;
use Composer\Downloader\TransportException;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 * @author Till Klampaeckel <till@php.net>
 */
class SvnDriver extends VcsDriver
{
    /** @var string */
    protected $baseUrl;
    /** @var array<string, string> Map of tag name to identifier */
    protected $tags;
    /** @var array<string, string> Map of branch name to identifier */
    protected $branches;
    /** @var ?string */
    protected $rootIdentifier;

/** @var string|false */
    protected $trunkPath = 'trunk';
    /** @var string */
    protected $branchesPath = 'branches';
    /** @var string */
    protected $tagsPath = 'tags';
    /** @var string */
    protected $packagePath = '';
    /** @var bool */
    protected $cacheCredentials = true;

/**
     * @var \Composer\Util\Svn
     */
    private $util;

/**
     * @inheritDoc
     */
    public function initialize()
    {
        $this->url = $this->baseUrl = rtrim(self::normalizeUrl($this->url), '/');

SvnUtil::cleanEnv();

if (isset($this->repoConfig['trunk-path'])) {
            $this->trunkPath = $this->repoConfig['trunk-path'];
        }
        if (isset($this->repoConfig['branches-path'])) {
            $this->branchesPath = $this->repoConfig['branches-path'];
        }
        if (isset($this->repoConfig['tags-path'])) {
            $this->tagsPath = $this->repoConfig['tags-path'];
        }
        if (array_key_exists('svn-cache-credentials', $this->repoConfig)) {
            $this->cacheCredentials = (bool) $this->repoConfig['svn-cache-credentials'];
        }
        if (isset($this->repoConfig['package-path'])) {
            $this->packagePath = '/' . trim($this->repoConfig['package-path'], '/');
        }

if (false !== ($pos = strrpos($this->url, '/' . $this->trunkPath))) {
            $this->baseUrl = substr($this->url, 0, $pos);
        }

$this->cache = new Cache($this->io, $this->config->get('cache-repo-dir').'/'.Preg::replace('{[^a-z0-9.]}i', '-', Url::sanitize($this->baseUrl)));
        $this->cache->setReadOnly($this->config->get('cache-read-only'));

$this->getBranches();
        $this->getTags();
    }

/**
     * @inheritDoc
     */
    public function getRootIdentifier()
    {
        return $this->rootIdentifier ?: $this->trunkPath;
    }

/**
     * @inheritDoc
     */
    public function getUrl()
    {
        return $this->url;
    }

/**
     * @inheritDoc
     */
    public function getSource($identifier)
    {
        return array('type' => 'svn', 'url' => $this->baseUrl, 'reference' => $identifier);
    }

/**
     * @inheritDoc
     */
    public function getDist($identifier)
    {
        return null;
    }

/**
     * @inheritDoc
     */
    protected function shouldCache($identifier)
    {
        return $this->cache && Preg::isMatch('{@\d+$}', $identifier);
    }

/**
     * @inheritDoc
     */
    public function getComposerInformation($identifier)
    {
        if (!isset($this->infoCache[$identifier])) {
            if ($this->shouldCache($identifier) && $res = $this->cache->read($identifier.'.json')) {
                return $this->infoCache[$identifier] = JsonFile::parseJson($res);
            }

try {
                $composer = $this->getBaseComposerInformation($identifier);
            } catch (TransportException $e) {
                $message = $e->getMessage();
                if (stripos($message, 'path not found') === false && stripos($message, 'svn: warning: W160013') === false) {
                    throw $e;
                }
                // remember a not-existent composer.json
                $composer = '';
            }

if ($this->shouldCache($identifier)) {
                $this->cache->write($identifier.'.json', json_encode($composer));
            }

$this->infoCache[$identifier] = $composer;
        }

return $this->infoCache[$identifier];
    }

/**
     * @param string $file
     * @param string $identifier
     */
    public function getFileContent($file, $identifier)
    {
        $identifier = '/' . trim($identifier, '/') . '/';

Preg::match('{^(.+?)(@\d+)?/$}', $identifier, $match);
        if (!empty($match[2])) {
            $path = $match[1];
            $rev = $match[2];
        } else {
            $path = $identifier;
            $rev = '';
        }

try {
            $resource = $path.$file;
            $output = $this->execute('svn cat', $this->baseUrl . $resource . $rev);
            if (!trim($output)) {
                return null;
            }
        } catch (\RuntimeException $e) {
            throw new TransportException($e->getMessage());
        }

return $output;
    }

/**
     * @inheritDoc
     */
    public function getChangeDate($identifier)
    {
        $identifier = '/' . trim($identifier, '/') . '/';

$output = $this->execute('svn info', $this->baseUrl . $path . $rev);
        foreach ($this->process->splitLines($output) as $line) {
            if ($line && Preg::isMatch('{^Last Changed Date: ([^(]+)}', $line, $match)) {
                return new \DateTime($match[1], new \DateTimeZone('UTC'));
            }
        }

return null;
    }

/**
     * @inheritDoc
     */
    public function getTags()
    {
        if (null === $this->tags) {
            $tags = array();

if ($this->tagsPath !== false) {
                $output = $this->execute('svn ls --verbose', $this->baseUrl . '/' . $this->tagsPath);
                if ($output) {
                    foreach ($this->process->splitLines($output) as $line) {
                        $line = trim($line);
                        if ($line && Preg::isMatch('{^\s*(\S+).*?(\S+)\s*$}', $line, $match)) {
                            if (isset($match[1], $match[2]) && $match[2] !== './') {
                                $tags[rtrim($match[2], '/')] = $this->buildIdentifier(
                                    '/' . $this->tagsPath . '/' . $match[2],
                                    $match[1]
                                );
                            }
                        }
                    }
                }
            }

$this->tags = $tags;
        }

return $this->tags;
    }

/**
     * @inheritDoc
     */
    public function getBranches()
    {
        if (null === $this->branches) {
            $branches = array();

if (false === $this->trunkPath) {
                $trunkParent = $this->baseUrl . '/';
            } else {
                $trunkParent = $this->baseUrl . '/' . $this->trunkPath;
            }

$output = $this->execute('svn ls --verbose', $trunkParent);
            if ($output) {
                foreach ($this->process->splitLines($output) as $line) {
                    $line = trim($line);
                    if ($line && Preg::isMatch('{^\s*(\S+).*?(\S+)\s*$}', $line, $match)) {
                        if (isset($match[1], $match[2]) && $match[2] === './') {
                            $branches['trunk'] = $this->buildIdentifier(
                                '/' . $this->trunkPath,
                                $match[1]
                            );
                            $this->rootIdentifier = $branches['trunk'];
                            break;
                        }
                    }
                }
            }
            unset($output);

if ($this->branchesPath !== false) {
                $output = $this->execute('svn ls --verbose', $this->baseUrl . '/' . $this->branchesPath);
                if ($output) {
                    foreach ($this->process->splitLines(trim($output)) as $line) {
                        $line = trim($line);
                        if ($line && Preg::isMatch('{^\s*(\S+).*?(\S+)\s*$}', $line, $match)) {
                            if (isset($match[1], $match[2]) && $match[2] !== './') {
                                $branches[rtrim($match[2], '/')] = $this->buildIdentifier(
                                    '/' . $this->branchesPath . '/' . $match[2],
                                    $match[1]
                                );
                            }
                        }
                    }
                }
            }

$this->branches = $branches;
        }

return $this->branches;
    }

/**
     * @inheritDoc
     */
    public static function supports(IOInterface $io, Config $config, $url, $deep = false)
    {
        $url = self::normalizeUrl($url);
        if (Preg::isMatch('#(^svn://|^svn\+ssh://|svn\.)#i', $url)) {
            return true;
        }

// proceed with deep check for local urls since they are fast to process
        if (!$deep && !Filesystem::isLocalPath($url)) {
            return false;
        }

$process = new ProcessExecutor($io);
        $exit = $process->execute(
            "svn info --non-interactive -- ".ProcessExecutor::escape($url),
            $ignoredOutput
        );

if ($exit === 0) {
            // This is definitely a Subversion repository.
            return true;
        }

// Subversion client 1.7 and older
        if (false !== stripos($process->getErrorOutput(), 'authorization failed:')) {
            // This is likely a remote Subversion repository that requires
            // authentication. We will handle actual authentication later.
            return true;
        }

// Subversion client 1.8 and newer
        if (false !== stripos($process->getErrorOutput(), 'Authentication failed')) {
            // This is likely a remote Subversion or newer repository that requires
            // authentication. We will handle actual authentication later.
            return true;
        }

return false;
    }

/**
     * An absolute path (leading '/') is converted to a file:// url.
     *
     * @param string $url
     *
     * @return string
     */
    protected static function normalizeUrl($url)
    {
        $fs = new Filesystem();
        if ($fs->isAbsolutePath($url)) {
            return 'file://' . strtr($url, '\\', '/');
        }

return $url;
    }

/**
     * Execute an SVN command and try to fix up the process with credentials
     * if necessary.
     *
     * @param  string            $command The svn command to run.
     * @param  string            $url     The SVN URL.
     * @throws \RuntimeException
     * @return string
     */
    protected function execute($command, $url)
    {
        if (null === $this->util) {
            $this->util = new SvnUtil($this->baseUrl, $this->io, $this->config, $this->process);
            $this->util->setCacheCredentials($this->cacheCredentials);
        }

try {
            return $this->util->execute($command, $url);
        } catch (\RuntimeException $e) {
            if (null === $this->util->binaryVersion()) {
                throw new \RuntimeException('Failed to load '.$this->url.', svn was not found, check that it is installed and in your PATH env.' . "\n\n" . $this->process->getErrorOutput());
            }

throw new \RuntimeException(
                'Repository '.$this->url.' could not be processed, '.$e->getMessage()
            );
        }
    }

/**
     * Build the identifier respecting "package-path" config option
     *
     * @param string $baseDir  The path to trunk/branch/tag
     * @param int    $revision The revision mark to add to identifier
     *
     * @return string
     */
    protected function buildIdentifier($baseDir, $revision)
    {
        return rtrim($baseDir, '/') . $this->packagePath . '/@' . $revision;
    }
}
<?php

namespace Composer\Repository\Vcs;

use Composer\Cache;
use Composer\Downloader\TransportException;
use Composer\Config;
use Composer\IO\IOInterface;
use Composer\Json\JsonFile;
use Composer\Pcre\Preg;
use Composer\Util\ProcessExecutor;
use Composer\Util\HttpDownloader;
use Composer\Util\Filesystem;
use Composer\Util\Http\Response;

/**
 * A driver implementation for driver with authentication interaction.
 *
 * @author François Pluchino <francois.pluchino@opendisplay.com>
 */
abstract class VcsDriver implements VcsDriverInterface
{
    /** @var string */
    protected $url;
    /** @var string */
    protected $originUrl;
    /** @var array<string, mixed> */
    protected $repoConfig;
    /** @var IOInterface */
    protected $io;
    /** @var Config */
    protected $config;
    /** @var ProcessExecutor */
    protected $process;
    /** @var HttpDownloader */
    protected $httpDownloader;
    /** @var array<string, mixed> */
    protected $infoCache = array();
    /** @var ?Cache */
    protected $cache;

/**
     * Constructor.
     *
     * @param array{url: string}&array<string, mixed>           $repoConfig     The repository configuration
     * @param IOInterface     $io             The IO instance
     * @param Config          $config         The composer configuration
     * @param HttpDownloader  $httpDownloader Remote Filesystem, injectable for mocking
     * @param ProcessExecutor $process        Process instance, injectable for mocking
     */
    final public function __construct(array $repoConfig, IOInterface $io, Config $config, HttpDownloader $httpDownloader, ProcessExecutor $process)
    {
        if (Filesystem::isLocalPath($repoConfig['url'])) {
            $repoConfig['url'] = Filesystem::getPlatformPath($repoConfig['url']);
        }

$this->url = $repoConfig['url'];
        $this->originUrl = $repoConfig['url'];
        $this->repoConfig = $repoConfig;
        $this->io = $io;
        $this->config = $config;
        $this->httpDownloader = $httpDownloader;
        $this->process = $process;
    }

/**
     * Returns whether or not the given $identifier should be cached or not.
     *
     * @param  string $identifier
     * @return bool
     */
    protected function shouldCache($identifier)
    {
        return $this->cache && Preg::isMatch('{^[a-f0-9]{40}$}iD', $identifier);
    }

/**
     * @inheritDoc
     */
    public function getComposerInformation($identifier)
    {
        if (!isset($this->infoCache[$identifier])) {
            if ($this->shouldCache($identifier) && $res = $this->cache->read($identifier)) {
                return $this->infoCache[$identifier] = JsonFile::parseJson($res);
            }

$composer = $this->getBaseComposerInformation($identifier);

if ($this->shouldCache($identifier)) {
                $this->cache->write($identifier, JsonFile::encode($composer, 0));
            }

$this->infoCache[$identifier] = $composer;
        }

return $this->infoCache[$identifier];
    }

/**
     * @param string $identifier
     *
     * @return array<string, mixed>|null
     */
    protected function getBaseComposerInformation($identifier)
    {
        $composerFileContent = $this->getFileContent('composer.json', $identifier);

if (!$composerFileContent) {
            return null;
        }

$composer = JsonFile::parseJson($composerFileContent, $identifier . ':composer.json');

if (empty($composer['time']) && $changeDate = $this->getChangeDate($identifier)) {
            $composer['time'] = $changeDate->format(DATE_RFC3339);
        }

return $composer;
    }

/**
     * @inheritDoc
     */
    public function hasComposerFile($identifier)
    {
        try {
            return (bool) $this->getComposerInformation($identifier);
        } catch (TransportException $e) {
        }

return false;
    }

/**
     * Get the https or http protocol depending on SSL support.
     *
     * Call this only if you know that the server supports both.
     *
     * @return string The correct type of protocol
     */
    protected function getScheme()
    {
        if (extension_loaded('openssl')) {
            return 'https';
        }

return 'http';
    }

/**
     * Get the remote content.
     *
     * @param string $url The URL of content
     *
     * @return Response
     * @throws TransportException
     */
    protected function getContents($url)
    {
        $options = isset($this->repoConfig['options']) ? $this->repoConfig['options'] : array();

return $this->httpDownloader->get($url, $options);
    }

/**
     * @inheritDoc
     */
    public function cleanup()
    {
        return;
    }
}
<?php

namespace Composer\Repository\Vcs;

use Composer\Config;
use Composer\IO\IOInterface;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
interface VcsDriverInterface
{
    /**
     * Initializes the driver (git clone, svn checkout, fetch info etc)
     *
     * @return void
     */
    public function initialize();

/**
     * Return the composer.json file information
     *
     * @param  string  $identifier Any identifier to a specific branch/tag/commit
     * @return mixed[] containing all infos from the composer.json file
     */
    public function getComposerInformation($identifier);

/**
     * Return the content of $file or null if the file does not exist.
     *
     * @param  string      $file
     * @param  string      $identifier
     * @return string|null
     */
    public function getFileContent($file, $identifier);

/**
     * Get the changedate for $identifier.
     *
     * @param  string         $identifier
     * @return \DateTime|null
     */
    public function getChangeDate($identifier);

/**
     * Return the root identifier (trunk, master, default/tip ..)
     *
     * @return string Identifier
     */
    public function getRootIdentifier();

/**
     * Return list of branches in the repository
     *
     * @return array<int|string, string> Branch names as keys, identifiers as values
     */
    public function getBranches();

/**
     * Return list of tags in the repository
     *
     * @return array<int|string, string> Tag names as keys, identifiers as values
     */
    public function getTags();

/**
     * @param string $identifier Any identifier to a specific branch/tag/commit
     *
     * @return array{type: string, url: string, reference: string, shasum: string}|null
     */
    public function getDist($identifier);

/**
     * @param string $identifier Any identifier to a specific branch/tag/commit
     *
     * @return array{type: string, url: string, reference: string}
     */
    public function getSource($identifier);

/**
     * Return the URL of the repository
     *
     * @return string
     */
    public function getUrl();

/**
     * Return true if the repository has a composer file for a given identifier,
     * false otherwise.
     *
     * @param  string $identifier Any identifier to a specific branch/tag/commit
     * @return bool   Whether the repository has a composer file for a given identifier.
     */
    public function hasComposerFile($identifier);

/**
     * Performs any cleanup necessary as the driver is not longer needed
     *
     * @return void
     */
    public function cleanup();

/**
     * Checks if this driver can handle a given url
     *
     * @param  IOInterface $io     IO instance
     * @param  Config      $config current $config
     * @param  string      $url    URL to validate/check
     * @param  bool        $deep   unless true, only shallow checks (url matching typically) should be done
     * @return bool
     */
    public static function supports(IOInterface $io, Config $config, $url, $deep = false);
}
<?php

namespace Composer\Repository\Vcs;

use Composer\Config;
use Composer\Cache;
use Composer\Pcre\Preg;
use Composer\Util\Hg as HgUtils;
use Composer\Util\ProcessExecutor;
use Composer\Util\Filesystem;
use Composer\IO\IOInterface;

/**
 * @author Per Bernhardt <plb@webfactory.de>
 */
class HgDriver extends VcsDriver
{
    /** @var array<string, string> Map of tag name to identifier */
    protected $tags;
    /** @var array<string, string> Map of branch name to identifier */
    protected $branches;
    /** @var string */
    protected $rootIdentifier;
    /** @var string */
    protected $repoDir;

/**
     * @inheritDoc
     */
    public function initialize()
    {
        if (Filesystem::isLocalPath($this->url)) {
            $this->repoDir = $this->url;
        } else {
            if (!Cache::isUsable((string) $this->config->get('cache-vcs-dir'))) {
                throw new \RuntimeException('HgDriver requires a usable cache directory, and it looks like you set it to be disabled');
            }

$cacheDir = $this->config->get('cache-vcs-dir');
            $this->repoDir = $cacheDir . '/' . Preg::replace('{[^a-z0-9]}i', '-', $this->url) . '/';

$fs = new Filesystem();
            $fs->ensureDirectoryExists($cacheDir);

if (!is_writable(dirname($this->repoDir))) {
                throw new \RuntimeException('Can not clone '.$this->url.' to access package information. The "'.$cacheDir.'" directory is not writable by the current user.');
            }

// Ensure we are allowed to use this URL by config
            $this->config->prohibitUrlByConfig($this->url, $this->io);

$hgUtils = new HgUtils($this->io, $this->config, $this->process);

// update the repo if it is a valid hg repository
            if (is_dir($this->repoDir) && 0 === $this->process->execute('hg summary', $output, $this->repoDir)) {
                if (0 !== $this->process->execute('hg pull', $output, $this->repoDir)) {
                    $this->io->writeError('<error>Failed to update '.$this->url.', package information from this repository may be outdated ('.$this->process->getErrorOutput().')</error>');
                }
            } else {
                // clean up directory and do a fresh clone into it
                $fs->removeDirectory($this->repoDir);

$repoDir = $this->repoDir;
                $command = function ($url) use ($repoDir) {
                    return sprintf('hg clone --noupdate -- %s %s', ProcessExecutor::escape($url), ProcessExecutor::escape($repoDir));
                };

$hgUtils->runCommand($command, $this->url, null);
            }
        }

$this->getTags();
        $this->getBranches();
    }

/**
     * @inheritDoc
     */
    public function getRootIdentifier()
    {
        if (null === $this->rootIdentifier) {
            $this->process->execute(sprintf('hg tip --template "{node}"'), $output, $this->repoDir);
            $output = $this->process->splitLines($output);
            $this->rootIdentifier = $output[0];
        }

return $this->rootIdentifier;
    }

/**
     * @inheritDoc
     */
    public function getUrl()
    {
        return $this->url;
    }

/**
     * @inheritDoc
     */
    public function getSource($identifier)
    {
        return array('type' => 'hg', 'url' => $this->getUrl(), 'reference' => $identifier);
    }

/**
     * @inheritDoc
     */
    public function getDist($identifier)
    {
        return null;
    }

/**
     * @inheritDoc
     */
    public function getFileContent($file, $identifier)
    {
        $resource = sprintf('hg cat -r %s %s', ProcessExecutor::escape($identifier), ProcessExecutor::escape($file));
        $this->process->execute($resource, $content, $this->repoDir);

if (!trim($content)) {
            return null;
        }

return $content;
    }

/**
     * @inheritDoc
     */
    public function getChangeDate($identifier)
    {
        $this->process->execute(
            sprintf(
                'hg log --template "{date|rfc3339date}" -r %s',
                ProcessExecutor::escape($identifier)
            ),
            $output,
            $this->repoDir
        );

return new \DateTime(trim($output), new \DateTimeZone('UTC'));
    }

/**
     * @inheritDoc
     */
    public function getTags()
    {
        if (null === $this->tags) {
            $tags = array();

$this->process->execute('hg tags', $output, $this->repoDir);
            foreach ($this->process->splitLines($output) as $tag) {
                if ($tag && Preg::isMatch('(^([^\s]+)\s+\d+:(.*)$)', $tag, $match)) {
                    $tags[$match[1]] = $match[2];
                }
            }
            unset($tags['tip']);

$this->tags = $tags;
        }

return $this->tags;
    }

/**
     * @inheritDoc
     */
    public function getBranches()
    {
        if (null === $this->branches) {
            $branches = array();
            $bookmarks = array();

$this->process->execute('hg branches', $output, $this->repoDir);
            foreach ($this->process->splitLines($output) as $branch) {
                if ($branch && Preg::isMatch('(^([^\s]+)\s+\d+:([a-f0-9]+))', $branch, $match)) {
                    $branches[$match[1]] = $match[2];
                }
            }

$this->process->execute('hg bookmarks', $output, $this->repoDir);
            foreach ($this->process->splitLines($output) as $branch) {
                if ($branch && Preg::isMatch('(^(?:[\s*]*)([^\s]+)\s+\d+:(.*)$)', $branch, $match)) {
                    $bookmarks[$match[1]] = $match[2];
                }
            }

// Branches will have preference over bookmarks
            $this->branches = array_merge($bookmarks, $branches);
        }

return $this->branches;
    }

/**
     * @inheritDoc
     */
    public static function supports(IOInterface $io, Config $config, $url, $deep = false)
    {
        if (Preg::isMatch('#(^(?:https?|ssh)://(?:[^@]+@)?bitbucket.org|https://(?:.*?)\.kilnhg.com)#i', $url)) {
            return true;
        }

// local filesystem
        if (Filesystem::isLocalPath($url)) {
            $url = Filesystem::getPlatformPath($url);
            if (!is_dir($url)) {
                return false;
            }

$process = new ProcessExecutor($io);
            // check whether there is a hg repo in that path
            if ($process->execute('hg summary', $output, $url) === 0) {
                return true;
            }
        }

if (!$deep) {
            return false;
        }

$process = new ProcessExecutor($io);
        $exit = $process->execute(sprintf('hg identify -- %s', ProcessExecutor::escape($url)), $ignored);

return $exit === 0;
    }
}
<?php

namespace Composer\Repository\Vcs;

use Composer\Config;
use Composer\Cache;
use Composer\IO\IOInterface;
use Composer\Json\JsonFile;
use Composer\Downloader\TransportException;
use Composer\Pcre\Preg;
use Composer\Util\HttpDownloader;
use Composer\Util\GitLab;
use Composer\Util\Http\Response;

/**
 * Driver for GitLab API, use the Git driver for local checkouts.
 *
 * @author Henrik Bjørnskov <henrik@bjrnskov.dk>
 * @author Jérôme Tamarelle <jerome@tamarelle.net>
 */
class GitLabDriver extends VcsDriver
{
    /**
     * @var string
     * @phpstan-var 'https'|'http'
     */
    private $scheme;
    /** @var string */
    private $namespace;
    /** @var string */
    private $repository;

/**
     * @var mixed[] Project data returned by GitLab API
     */
    private $project;

/**
     * @var array<string|int, mixed[]> Keeps commits returned by GitLab API as commit id => info
     */
    private $commits = array();

/** @var array<string, string> Map of tag name to identifier */
    private $tags;

/** @var array<string, string> Map of branch name to identifier */
    private $branches;

/**
     * Git Driver
     *
     * @var ?GitDriver
     */
    protected $gitDriver = null;

/**
     * Protocol to force use of for repository URLs.
     *
     * @var string One of ssh, http
     */
    protected $protocol;

/**
     * Defaults to true unless we can make sure it is public
     *
     * @var bool defines whether the repo is private or not
     */
    private $isPrivate = true;

/**
     * @var bool true if the origin has a port number or a path component in it
     */
    private $hasNonstandardOrigin = false;

const URL_REGEX = '#^(?:(?P<scheme>https?)://(?P<domain>.+?)(?::(?P<port>[0-9]+))?/|git@(?P<domain2>[^:]+):)(?P<parts>.+)/(?P<repo>[^/]+?)(?:\.git|/)?$#';

/**
     * Extracts information from the repository url.
     *
     * SSH urls use https by default. Set "secure-http": false on the repository config to use http instead.
     *
     * @inheritDoc
     */
    public function initialize()
    {
        if (!Preg::isMatch(self::URL_REGEX, $this->url, $match)) {
            throw new \InvalidArgumentException('The URL provided is invalid. It must be the HTTP URL of a GitLab project.');
        }

$guessedDomain = !empty($match['domain']) ? $match['domain'] : $match['domain2'];
        $configuredDomains = $this->config->get('gitlab-domains');
        $urlParts = explode('/', $match['parts']);

$this->scheme = !empty($match['scheme'])
            ? $match['scheme']
            : (isset($this->repoConfig['secure-http']) && $this->repoConfig['secure-http'] === false ? 'http' : 'https')
        ;
        $this->originUrl = self::determineOrigin($configuredDomains, $guessedDomain, $urlParts, $match['port']);

if ($protocol = $this->config->get('gitlab-protocol')) {
            // https treated as a synonym for http.
            if (!in_array($protocol, array('git', 'http', 'https'))) {
                throw new \RuntimeException('gitlab-protocol must be one of git, http.');
            }
            $this->protocol = $protocol === 'git' ? 'ssh' : 'http';
        }

if (false !== strpos($this->originUrl, ':') || false !== strpos($this->originUrl, '/')) {
            $this->hasNonstandardOrigin = true;
        }

$this->namespace = implode('/', $urlParts);
        $this->repository = Preg::replace('#(\.git)$#', '', $match['repo']);

$this->cache = new Cache($this->io, $this->config->get('cache-repo-dir').'/'.$this->originUrl.'/'.$this->namespace.'/'.$this->repository);
        $this->cache->setReadOnly($this->config->get('cache-read-only'));

$this->fetchProject();
    }

/**
     * Updates the HttpDownloader instance.
     * Mainly useful for tests.
     *
     * @internal
     *
     * @return void
     */
    public function setHttpDownloader(HttpDownloader $httpDownloader)
    {
        $this->httpDownloader = $httpDownloader;
    }

if ($this->shouldCache($identifier)) {
                    $this->cache->write($identifier, json_encode($composer));
                }
            }

if ($composer) {
                // specials for gitlab (this data is only available if authentication is provided)
                if (!isset($composer['support']['source']) && isset($this->project['web_url'])) {
                    $label = array_search($identifier, $this->getTags(), true) ?: array_search($identifier, $this->getBranches(), true) ?: $identifier;
                    $composer['support']['source'] = sprintf('%s/-/tree/%s', $this->project['web_url'], $label);
                }
                if (!isset($composer['support']['issues']) && !empty($this->project['issues_enabled']) && isset($this->project['web_url'])) {
                    $composer['support']['issues'] = sprintf('%s/-/issues', $this->project['web_url']);
                }
                if (!isset($composer['abandoned']) && !empty($this->project['archived'])) {
                    $composer['abandoned'] = true;
                }
            }

$this->infoCache[$identifier] = $composer;
        }

return $this->infoCache[$identifier];
    }

// Convert the root identifier to a cacheable commit id
        if (!Preg::isMatch('{[a-f0-9]{40}}i', $identifier)) {
            $branches = $this->getBranches();
            if (isset($branches[$identifier])) {
                $identifier = $branches[$identifier];
            }
        }

$resource = $this->getApiUrl().'/repository/files/'.$this->urlEncodeAll($file).'/raw?ref='.$identifier;

try {
            $content = $this->getContents($resource)->getBody();
        } catch (TransportException $e) {
            if ($e->getCode() !== 404) {
                throw $e;
            }

return null;
        }

return $content;
    }

/**
     * @inheritDoc
     */
    public function getChangeDate($identifier)
    {
        if ($this->gitDriver) {
            return $this->gitDriver->getChangeDate($identifier);
        }

if (isset($this->commits[$identifier])) {
            return new \DateTime($this->commits[$identifier]['committed_date']);
        }

return new \DateTime();
    }

/**
     * @return string
     */
    public function getRepositoryUrl()
    {
        if ($this->protocol) {
            return $this->project["{$this->protocol}_url_to_repo"];
        }

return $this->isPrivate ? $this->project['ssh_url_to_repo'] : $this->project['http_url_to_repo'];
    }

/**
     * @inheritDoc
     */
    public function getUrl()
    {
        if ($this->gitDriver) {
            return $this->gitDriver->getUrl();
        }

return $this->project['web_url'];
    }

/**
     * @inheritDoc
     */
    public function getDist($identifier)
    {
        $url = $this->getApiUrl().'/repository/archive.zip?sha='.$identifier;

return array('type' => 'zip', 'url' => $url, 'reference' => $identifier, 'shasum' => '');
    }

/**
     * @inheritDoc
     */
    public function getSource($identifier)
    {
        if ($this->gitDriver) {
            return $this->gitDriver->getSource($identifier);
        }

return array('type' => 'git', 'url' => $this->getRepositoryUrl(), 'reference' => $identifier);
    }

/**
     * @inheritDoc
     */
    public function getRootIdentifier()
    {
        if ($this->gitDriver) {
            return $this->gitDriver->getRootIdentifier();
        }

return $this->project['default_branch'];
    }

/**
     * @inheritDoc
     */
    public function getBranches()
    {
        if ($this->gitDriver) {
            return $this->gitDriver->getBranches();
        }

if (!$this->branches) {
            $this->branches = $this->getReferences('branches');
        }

return $this->branches;
    }

/**
     * @inheritDoc
     */
    public function getTags()
    {
        if ($this->gitDriver) {
            return $this->gitDriver->getTags();
        }

if (!$this->tags) {
            $this->tags = $this->getReferences('tags');
        }

return $this->tags;
    }

/**
     * @return string Base URL for GitLab API v3
     */
    public function getApiUrl()
    {
        return $this->scheme.'://'.$this->originUrl.'/api/v4/projects/'.$this->urlEncodeAll($this->namespace).'%2F'.$this->urlEncodeAll($this->repository);
    }

/**
     * Urlencode all non alphanumeric characters. rawurlencode() can not be used as it does not encode `.`
     *
     * @param  string $string
     * @return string
     */
    private function urlEncodeAll($string)
    {
        $encoded = '';
        for ($i = 0; isset($string[$i]); $i++) {
            $character = $string[$i];
            if (!ctype_alnum($character) && !in_array($character, array('-', '_'), true)) {
                $character = '%' . sprintf('%02X', ord($character));
            }
            $encoded .= $character;
        }

return $encoded;
    }

/**
     * @param string $type
     *
     * @return string[] where keys are named references like tags or branches and the value a sha
     */
    protected function getReferences($type)
    {
        $perPage = 100;
        $resource = $this->getApiUrl().'/repository/'.$type.'?per_page='.$perPage;

$references = array();
        do {
            $response = $this->getContents($resource);
            $data = $response->decodeJson();

foreach ($data as $datum) {
                $references[$datum['name']] = $datum['commit']['id'];

// Keep the last commit date of a reference to avoid
                // unnecessary API call when retrieving the composer file.
                $this->commits[$datum['commit']['id']] = $datum['commit'];
            }

if (count($data) >= $perPage) {
                $resource = $this->getNextPage($response);
            } else {
                $resource = false;
            }
        } while ($resource);

return $references;
    }

/**
     * @return void
     */
    protected function fetchProject()
    {
        // we need to fetch the default branch from the api
        $resource = $this->getApiUrl();
        $this->project = $this->getContents($resource, true)->decodeJson();
        if (isset($this->project['visibility'])) {
            $this->isPrivate = $this->project['visibility'] !== 'public';
        } else {
            // client is not authenticated, therefore repository has to be public
            $this->isPrivate = false;
        }
    }

/**
     * @phpstan-impure
     *
     * @return true
     * @throws \RuntimeException
     */
    protected function attemptCloneFallback()
    {
        if ($this->isPrivate === false) {
            $url = $this->generatePublicUrl();
        } else {
            $url = $this->generateSshUrl();
        }

try {
            // If this repository may be private and we
            // cannot ask for authentication credentials (because we
            // are not interactive) then we fallback to GitDriver.
            $this->setupGitDriver($url);

return true;
        } catch (\RuntimeException $e) {
            $this->gitDriver = null;

$this->io->writeError('<error>Failed to clone the '.$url.' repository, try running in interactive mode so that you can enter your credentials</error>');
            throw $e;
        }
    }

/**
     * Generate an SSH URL
     *
     * @return string
     */
    protected function generateSshUrl()
    {
        if ($this->hasNonstandardOrigin) {
            return 'ssh://git@'.$this->originUrl.'/'.$this->namespace.'/'.$this->repository.'.git';
        }

return 'git@' . $this->originUrl . ':'.$this->namespace.'/'.$this->repository.'.git';
    }

/**
     * @return string
     */
    protected function generatePublicUrl()
    {
        return $this->scheme . '://' . $this->originUrl . '/'.$this->namespace.'/'.$this->repository.'.git';
    }

/**
     * @inheritDoc
     *
     * @param bool $fetchingRepoData
     */
    protected function getContents($url, $fetchingRepoData = false)
    {
        try {
            $response = parent::getContents($url);

if ($fetchingRepoData) {
                $json = $response->decodeJson();

// Accessing the API with a token with Guest (10) access will return
                // more data than unauthenticated access but no default_branch data
                // accessing files via the API will then also fail
                if (!isset($json['default_branch']) && isset($json['permissions'])) {
                    $this->isPrivate = $json['visibility'] !== 'public';

$moreThanGuestAccess = false;
                    // Check both access levels (e.g. project, group)
                    // - value will be null if no access is set
                    // - value will be array with key access_level if set
                    foreach ($json['permissions'] as $permission) {
                        if ($permission && $permission['access_level'] > 10) {
                            $moreThanGuestAccess = true;
                        }
                    }

if (!$moreThanGuestAccess) {
                        $this->io->writeError('<warning>GitLab token with Guest only access detected</warning>');

$this->attemptCloneFallback();

return new Response(array('url' => 'dummy'), 200, array(), 'null');
                    }
                }

// force auth as the unauthenticated version of the API is broken
                if (!isset($json['default_branch'])) {
                    // GitLab allows you to disable the repository inside a project to use a project only for issues and wiki
                    if (isset($json['repository_access_level']) && $json['repository_access_level'] === 'disabled') {
                        throw new TransportException('The GitLab repository is disabled in the project', 400);
                    }

if (!empty($json['id'])) {
                        $this->isPrivate = false;
                    }

throw new TransportException('GitLab API seems to not be authenticated as it did not return a default_branch', 401);
                }
            }

return $response;
        } catch (TransportException $e) {
            $gitLabUtil = new GitLab($this->io, $this->config, $this->process, $this->httpDownloader);

if ($gitLabUtil->authorizeOAuth($this->originUrl)) {
                        return parent::getContents($url);
                    }

if (!$this->io->isInteractive()) {
                        $this->attemptCloneFallback();

return new Response(array('url' => 'dummy'), 200, array(), 'null');
                    }
                    $this->io->writeError('<warning>Failed to download ' . $this->namespace . '/' . $this->repository . ':' . $e->getMessage() . '</warning>');
                    $gitLabUtil->authorizeOAuthInteractively($this->scheme, $this->originUrl, 'Your credentials are required to fetch private repository metadata (<info>'.$this->url.'</info>)');

return parent::getContents($url);

case 403:
                    if (!$this->io->hasAuthentication($this->originUrl) && $gitLabUtil->authorizeOAuth($this->originUrl)) {
                        return parent::getContents($url);
                    }

if (!$this->io->isInteractive() && $fetchingRepoData) {
                        $this->attemptCloneFallback();

return new Response(array('url' => 'dummy'), 200, array(), 'null');
                    }

throw $e;

default:
                    throw $e;
            }
        }
    }

/**
     * Uses the config `gitlab-domains` to see if the driver supports the url for the
     * repository given.
     *
     * @inheritDoc
     */
    public static function supports(IOInterface $io, Config $config, $url, $deep = false)
    {
        if (!Preg::isMatch(self::URL_REGEX, $url, $match)) {
            return false;
        }

$scheme = !empty($match['scheme']) ? $match['scheme'] : null;
        $guessedDomain = !empty($match['domain']) ? $match['domain'] : $match['domain2'];
        $urlParts = explode('/', $match['parts']);

if (false === self::determineOrigin((array) $config->get('gitlab-domains'), $guessedDomain, $urlParts, $match['port'])) {
            return false;
        }

if ('https' === $scheme && !extension_loaded('openssl')) {
            $io->writeError('Skipping GitLab driver for '.$url.' because the OpenSSL PHP extension is missing.', true, IOInterface::VERBOSE);

return false;
        }

return true;
    }

/**
     * @return string|null
     */
    protected function getNextPage(Response $response)
    {
        $header = $response->getHeader('link');

$links = explode(',', $header);
        foreach ($links as $link) {
            if (Preg::isMatch('{<(.+?)>; *rel="next"}', $link, $match)) {
                return $match[1];
            }
        }

return null;
    }

/**
     * @param  array<string> $configuredDomains
     * @param  string        $guessedDomain
     * @param  array<string> $urlParts
     * @param string         $portNumber
     *
     * @return string|false
     */
    private static function determineOrigin(array $configuredDomains, $guessedDomain, array &$urlParts, $portNumber)
    {
        $guessedDomain = strtolower($guessedDomain);

if (in_array($guessedDomain, $configuredDomains) || ($portNumber && in_array($guessedDomain.':'.$portNumber, $configuredDomains))) {
            if ($portNumber) {
                return $guessedDomain.':'.$portNumber;
            }

return $guessedDomain;
        }

if ($portNumber) {
            $guessedDomain .= ':'.$portNumber;
        }

while (null !== ($part = array_shift($urlParts))) {
            $guessedDomain .= '/' . $part;

if (in_array($guessedDomain, $configuredDomains) || ($portNumber && in_array(Preg::replace('{:\d+}', '', $guessedDomain), $configuredDomains))) {
                return $guessedDomain;
            }
        }

return false;
    }
}
<?php

namespace Composer\Repository\Vcs;

use Composer\Config;
use Composer\IO\IOInterface;
use Composer\Cache;
use Composer\Downloader\TransportException;
use Composer\Json\JsonFile;
use Composer\Pcre\Preg;
use Composer\Util\Bitbucket;
use Composer\Util\Http\Response;

/**
 * @author Per Bernhardt <plb@webfactory.de>
 */
class GitBitbucketDriver extends VcsDriver
{
    /** @var string */
    protected $owner;
    /** @var string */
    protected $repository;
    /** @var bool */
    private $hasIssues = false;
    /** @var ?string */
    private $rootIdentifier;
    /** @var array<string, string> Map of tag name to identifier */
    private $tags;
    /** @var array<string, string> Map of branch name to identifier */
    private $branches;
    /** @var string */
    private $branchesUrl = '';
    /** @var string */
    private $tagsUrl = '';
    /** @var string */
    private $homeUrl = '';
    /** @var string */
    private $website = '';
    /** @var string */
    private $cloneHttpsUrl = '';

/**
     * @var ?VcsDriver
     */
    protected $fallbackDriver = null;
    /** @var string|null if set either git or hg */
    private $vcsType;

/**
     * @inheritDoc
     */
    public function initialize()
    {
        Preg::match('#^https?://bitbucket\.org/([^/]+)/([^/]+?)(\.git|/?)?$#i', $this->url, $match);
        $this->owner = $match[1];
        $this->repository = $match[2];
        $this->originUrl = 'bitbucket.org';
        $this->cache = new Cache(
            $this->io,
            implode('/', array(
                $this->config->get('cache-repo-dir'),
                $this->originUrl,
                $this->owner,
                $this->repository,
            ))
        );
        $this->cache->setReadOnly($this->config->get('cache-read-only'));
    }

/**
     * @inheritDoc
     */
    public function getUrl()
    {
        if ($this->fallbackDriver) {
            return $this->fallbackDriver->getUrl();
        }

return $this->cloneHttpsUrl;
    }

/**
     * Attempts to fetch the repository data via the BitBucket API and
     * sets some parameters which are used in other methods
     *
     * @return bool
     * @phpstan-impure
     */
    protected function getRepoData()
    {
        $resource = sprintf(
            'https://api.bitbucket.org/2.0/repositories/%s/%s?%s',
            $this->owner,
            $this->repository,
            http_build_query(
                array('fields' => '-project,-owner'),
                '',
                '&'
            )
        );

$repoData = $this->fetchWithOAuthCredentials($resource, true)->decodeJson();
        if ($this->fallbackDriver) {
            return false;
        }
        $this->parseCloneUrls($repoData['links']['clone']);

$this->hasIssues = !empty($repoData['has_issues']);
        $this->branchesUrl = $repoData['links']['branches']['href'];
        $this->tagsUrl = $repoData['links']['tags']['href'];
        $this->homeUrl = $repoData['links']['html']['href'];
        $this->website = $repoData['website'];
        $this->vcsType = $repoData['scm'];

return true;
    }

/**
     * @inheritDoc
     */
    public function getComposerInformation($identifier)
    {
        if ($this->fallbackDriver) {
            return $this->fallbackDriver->getComposerInformation($identifier);
        }

if ($this->shouldCache($identifier)) {
                    $this->cache->write($identifier, json_encode($composer));
                }
            }

if ($composer) {
                // specials for bitbucket
                if (!isset($composer['support']['source'])) {
                    $label = array_search(
                        $identifier,
                        $this->getTags()
                    ) ?: array_search(
                        $identifier,
                        $this->getBranches()
                    ) ?: $identifier;

if (array_key_exists($label, $tags = $this->getTags())) {
                        $hash = $tags[$label];
                    } elseif (array_key_exists($label, $branches = $this->getBranches())) {
                        $hash = $branches[$label];
                    }

if (!isset($hash)) {
                        $composer['support']['source'] = sprintf(
                            'https://%s/%s/%s/src',
                            $this->originUrl,
                            $this->owner,
                            $this->repository
                        );
                    } else {
                        $composer['support']['source'] = sprintf(
                            'https://%s/%s/%s/src/%s/?at=%s',
                            $this->originUrl,
                            $this->owner,
                            $this->repository,
                            $hash,
                            $label
                        );
                    }
                }
                if (!isset($composer['support']['issues']) && $this->hasIssues) {
                    $composer['support']['issues'] = sprintf(
                        'https://%s/%s/%s/issues',
                        $this->originUrl,
                        $this->owner,
                        $this->repository
                    );
                }
                if (!isset($composer['homepage'])) {
                    $composer['homepage'] = empty($this->website) ? $this->homeUrl : $this->website;
                }
            }

$this->infoCache[$identifier] = $composer;
        }

return $this->infoCache[$identifier];
    }

/**
     * @inheritDoc
     */
    public function getFileContent($file, $identifier)
    {
        if ($this->fallbackDriver) {
            return $this->fallbackDriver->getFileContent($file, $identifier);
        }

if (strpos($identifier, '/') !== false) {
            $branches = $this->getBranches();
            if (isset($branches[$identifier])) {
                $identifier = $branches[$identifier];
            }
        }

$resource = sprintf(
            'https://api.bitbucket.org/2.0/repositories/%s/%s/src/%s/%s',
            $this->owner,
            $this->repository,
            $identifier,
            $file
        );

return $this->fetchWithOAuthCredentials($resource)->getBody();
    }

/**
     * @inheritDoc
     */
    public function getChangeDate($identifier)
    {
        if ($this->fallbackDriver) {
            return $this->fallbackDriver->getChangeDate($identifier);
        }

$resource = sprintf(
            'https://api.bitbucket.org/2.0/repositories/%s/%s/commit/%s?fields=date',
            $this->owner,
            $this->repository,
            $identifier
        );
        $commit = $this->fetchWithOAuthCredentials($resource)->decodeJson();

return new \DateTime($commit['date']);
    }

/**
     * @inheritDoc
     */
    public function getSource($identifier)
    {
        if ($this->fallbackDriver) {
            return $this->fallbackDriver->getSource($identifier);
        }

return array('type' => $this->vcsType, 'url' => $this->getUrl(), 'reference' => $identifier);
    }

/**
     * @inheritDoc
     */
    public function getDist($identifier)
    {
        if ($this->fallbackDriver) {
            return $this->fallbackDriver->getDist($identifier);
        }

$url = sprintf(
            'https://bitbucket.org/%s/%s/get/%s.zip',
            $this->owner,
            $this->repository,
            $identifier
        );

return array('type' => 'zip', 'url' => $url, 'reference' => $identifier, 'shasum' => '');
    }

/**
     * @inheritDoc
     */
    public function getTags()
    {
        if ($this->fallbackDriver) {
            return $this->fallbackDriver->getTags();
        }

if (null === $this->tags) {
            $tags = array();
            $resource = sprintf(
                '%s?%s',
                $this->tagsUrl,
                http_build_query(
                    array(
                        'pagelen' => 100,
                        'fields' => 'values.name,values.target.hash,next',
                        'sort' => '-target.date',
                    ),
                    '',
                    '&'
                )
            );
            $hasNext = true;
            while ($hasNext) {
                $tagsData = $this->fetchWithOAuthCredentials($resource)->decodeJson();
                foreach ($tagsData['values'] as $data) {
                    $tags[$data['name']] = $data['target']['hash'];
                }
                if (empty($tagsData['next'])) {
                    $hasNext = false;
                } else {
                    $resource = $tagsData['next'];
                }
            }

$this->tags = $tags;
        }

return $this->tags;
    }

/**
     * @inheritDoc
     */
    public function getBranches()
    {
        if ($this->fallbackDriver) {
            return $this->fallbackDriver->getBranches();
        }

if (null === $this->branches) {
            $branches = array();
            $resource = sprintf(
                '%s?%s',
                $this->branchesUrl,
                http_build_query(
                    array(
                        'pagelen' => 100,
                        'fields' => 'values.name,values.target.hash,values.heads,next',
                        'sort' => '-target.date',
                    ),
                    '',
                    '&'
                )
            );
            $hasNext = true;
            while ($hasNext) {
                $branchData = $this->fetchWithOAuthCredentials($resource)->decodeJson();
                foreach ($branchData['values'] as $data) {
                    $branches[$data['name']] = $data['target']['hash'];
                }
                if (empty($branchData['next'])) {
                    $hasNext = false;
                } else {
                    $resource = $branchData['next'];
                }
            }

$this->branches = $branches;
        }

return $this->branches;
    }

/**
     * Get the remote content.
     *
     * @param string $url              The URL of content
     * @param bool   $fetchingRepoData
     *
     * @return Response The result
     *
     * @phpstan-impure
     */
    protected function fetchWithOAuthCredentials($url, $fetchingRepoData = false)
    {
        try {
            return parent::getContents($url);
        } catch (TransportException $e) {
            $bitbucketUtil = new Bitbucket($this->io, $this->config, $this->process, $this->httpDownloader);

if (403 === $e->getCode() || (401 === $e->getCode() && strpos($e->getMessage(), 'Could not authenticate against') === 0)) {
                if (!$this->io->hasAuthentication($this->originUrl)
                    && $bitbucketUtil->authorizeOAuth($this->originUrl)
                ) {
                    return parent::getContents($url);
                }

if (!$this->io->isInteractive() && $fetchingRepoData) {
                    $this->attemptCloneFallback();

return new Response(array('url' => 'dummy'), 200, array(), 'null');
                }
            }

throw $e;
        }
    }

/**
     * Generate an SSH URL
     *
     * @return string
     */
    protected function generateSshUrl()
    {
        return 'git@' . $this->originUrl . ':' . $this->owner.'/'.$this->repository.'.git';
    }

/**
     * @phpstan-impure
     *
     * @return true
     * @throws \RuntimeException
     */
    protected function attemptCloneFallback()
    {
        try {
            $this->setupFallbackDriver($this->generateSshUrl());

return true;
        } catch (\RuntimeException $e) {
            $this->fallbackDriver = null;

$this->io->writeError(
                '<error>Failed to clone the ' . $this->generateSshUrl() . ' repository, try running in interactive mode'
                    . ' so that you can enter your Bitbucket OAuth consumer credentials</error>'
            );
            throw $e;
        }
    }

/**
     * @param  string $url
     * @return void
     */
    protected function setupFallbackDriver($url)
    {
        $this->fallbackDriver = new GitDriver(
            array('url' => $url),
            $this->io,
            $this->config,
            $this->httpDownloader,
            $this->process
        );
        $this->fallbackDriver->initialize();
    }

/**
     * @param  array<array{name: string, href: string}> $cloneLinks
     * @return void
     */
    protected function parseCloneUrls(array $cloneLinks)
    {
        foreach ($cloneLinks as $cloneLink) {
            if ($cloneLink['name'] === 'https') {
                // Format: https://(user@)bitbucket.org/{user}/{repo}
                // Strip username from URL (only present in clone URL's for private repositories)
                $this->cloneHttpsUrl = Preg::replace('/https:\/\/([^@]+@)?/', 'https://', $cloneLink['href']);
            }
        }
    }

/**
     * @return (array{name: string}&mixed[])|null
     */
    protected function getMainBranchData()
    {
        $resource = sprintf(
            'https://api.bitbucket.org/2.0/repositories/%s/%s?fields=mainbranch',
            $this->owner,
            $this->repository
        );

$data = $this->fetchWithOAuthCredentials($resource)->decodeJson();
        if (isset($data['mainbranch'])) {
            return $data['mainbranch'];
        }

return null;
    }

/**
     * @inheritDoc
     */
    public function getRootIdentifier()
    {
        if ($this->fallbackDriver) {
            return $this->fallbackDriver->getRootIdentifier();
        }

if (null === $this->rootIdentifier) {
            if (!$this->getRepoData()) {
                if (!$this->fallbackDriver) {
                    throw new \LogicException('A fallback driver should be setup if getRepoData returns false');
                }

return $this->fallbackDriver->getRootIdentifier();
            }

if ($this->vcsType !== 'git') {
                throw new \RuntimeException(
                    $this->url.' does not appear to be a git repository, use '.
                    $this->cloneHttpsUrl.' but remember that Bitbucket no longer supports the mercurial repositories. '.
                    'https://bitbucket.org/blog/sunsetting-mercurial-support-in-bitbucket'
                );
            }

$mainBranchData = $this->getMainBranchData();
            $this->rootIdentifier = !empty($mainBranchData['name']) ? $mainBranchData['name'] : 'master';
        }

return $this->rootIdentifier;
    }

/**
     * @inheritDoc
     */
    public static function supports(IOInterface $io, Config $config, $url, $deep = false)
    {
        if (!Preg::isMatch('#^https?://bitbucket\.org/([^/]+)/([^/]+?)(\.git|/?)?$#i', $url)) {
            return false;
        }

if (!extension_loaded('openssl')) {
            $io->writeError('Skipping Bitbucket git driver for '.$url.' because the OpenSSL PHP extension is missing.', true, IOInterface::VERBOSE);

return false;
        }

return true;
    }
}
<?php

namespace Composer\Repository\Vcs;

use Composer\Cache;
use Composer\Config;
use Composer\Pcre\Preg;
use Composer\Util\ProcessExecutor;
use Composer\Util\Filesystem;
use Composer\IO\IOInterface;

/**
 * @author BohwaZ <http://bohwaz.net/>
 */
class FossilDriver extends VcsDriver
{
    /** @var array<string, string> Map of tag name to identifier */
    protected $tags;
    /** @var array<string, string> Map of branch name to identifier */
    protected $branches;
    /** @var ?string */
    protected $rootIdentifier = null;
    /** @var ?string */
    protected $repoFile = null;
    /** @var string */
    protected $checkoutDir;

/**
     * @inheritDoc
     */
    public function initialize()
    {
        // Make sure fossil is installed and reachable.
        $this->checkFossil();

// Ensure we are allowed to use this URL by config.
        $this->config->prohibitUrlByConfig($this->url, $this->io);

// Only if url points to a locally accessible directory, assume it's the checkout directory.
        // Otherwise, it should be something fossil can clone from.
        if (Filesystem::isLocalPath($this->url) && is_dir($this->url)) {
            $this->checkoutDir = $this->url;
        } else {
            if (!Cache::isUsable((string) $this->config->get('cache-repo-dir')) || !Cache::isUsable((string) $this->config->get('cache-vcs-dir'))) {
                throw new \RuntimeException('FossilDriver requires a usable cache directory, and it looks like you set it to be disabled');
            }

$localName = Preg::replace('{[^a-z0-9]}i', '-', $this->url);
            $this->repoFile = $this->config->get('cache-repo-dir') . '/' . $localName . '.fossil';
            $this->checkoutDir = $this->config->get('cache-vcs-dir') . '/' . $localName . '/';

$this->updateLocalRepo();
        }

$this->getTags();
        $this->getBranches();
    }

/**
     * Check that fossil can be invoked via command line.
     *
     * @return void
     */
    protected function checkFossil()
    {
        if (0 !== $this->process->execute('fossil version', $ignoredOutput)) {
            throw new \RuntimeException("fossil was not found, check that it is installed and in your PATH env.\n\n" . $this->process->getErrorOutput());
        }
    }

/**
     * Clone or update existing local fossil repository.
     *
     * @return void
     */
    protected function updateLocalRepo()
    {
        $fs = new Filesystem();
        $fs->ensureDirectoryExists($this->checkoutDir);

if (!is_writable(dirname($this->checkoutDir))) {
            throw new \RuntimeException('Can not clone '.$this->url.' to access package information. The "'.$this->checkoutDir.'" directory is not writable by the current user.');
        }

// update the repo if it is a valid fossil repository
        if (is_file($this->repoFile) && is_dir($this->checkoutDir) && 0 === $this->process->execute('fossil info', $output, $this->checkoutDir)) {
            if (0 !== $this->process->execute('fossil pull', $output, $this->checkoutDir)) {
                $this->io->writeError('<error>Failed to update '.$this->url.', package information from this repository may be outdated ('.$this->process->getErrorOutput().')</error>');
            }
        } else {
            // clean up directory and do a fresh clone into it
            $fs->removeDirectory($this->checkoutDir);
            $fs->remove($this->repoFile);

$fs->ensureDirectoryExists($this->checkoutDir);

if (0 !== $this->process->execute(sprintf('fossil clone -- %s %s', ProcessExecutor::escape($this->url), ProcessExecutor::escape($this->repoFile)), $output)) {
                $output = $this->process->getErrorOutput();

throw new \RuntimeException('Failed to clone '.$this->url.' to repository ' . $this->repoFile . "\n\n" .$output);
            }

if (0 !== $this->process->execute(sprintf('fossil open --nested -- %s', ProcessExecutor::escape($this->repoFile)), $output, $this->checkoutDir)) {
                $output = $this->process->getErrorOutput();

throw new \RuntimeException('Failed to open repository '.$this->repoFile.' in ' . $this->checkoutDir . "\n\n" .$output);
            }
        }
    }

/**
     * @inheritDoc
     */
    public function getRootIdentifier()
    {
        if (null === $this->rootIdentifier) {
            $this->rootIdentifier = 'trunk';
        }

return $this->rootIdentifier;
    }

/**
     * @inheritDoc
     */
    public function getUrl()
    {
        return $this->url;
    }

/**
     * @inheritDoc
     */
    public function getSource($identifier)
    {
        return array('type' => 'fossil', 'url' => $this->getUrl(), 'reference' => $identifier);
    }

/**
     * @inheritDoc
     */
    public function getDist($identifier)
    {
        return null;
    }

/**
     * @inheritDoc
     */
    public function getFileContent($file, $identifier)
    {
        $command = sprintf('fossil cat -r %s -- %s', ProcessExecutor::escape($identifier), ProcessExecutor::escape($file));
        $this->process->execute($command, $content, $this->checkoutDir);

if (!trim($content)) {
            return null;
        }

return $content;
    }

/**
     * @inheritDoc
     */
    public function getChangeDate($identifier)
    {
        $this->process->execute('fossil finfo -b -n 1 composer.json', $output, $this->checkoutDir);
        list(, $date) = explode(' ', trim($output), 3);

return new \DateTime($date, new \DateTimeZone('UTC'));
    }

/**
     * @inheritDoc
     */
    public function getTags()
    {
        if (null === $this->tags) {
            $tags = array();

$this->process->execute('fossil tag list', $output, $this->checkoutDir);
            foreach ($this->process->splitLines($output) as $tag) {
                $tags[$tag] = $tag;
            }

$this->tags = $tags;
        }

return $this->tags;
    }

/**
     * @inheritDoc
     */
    public function getBranches()
    {
        if (null === $this->branches) {
            $branches = array();

$this->process->execute('fossil branch list', $output, $this->checkoutDir);
            foreach ($this->process->splitLines($output) as $branch) {
                $branch = trim(Preg::replace('/^\*/', '', trim($branch)));
                $branches[$branch] = $branch;
            }

$this->branches = $branches;
        }

return $this->branches;
    }

/**
     * @inheritDoc
     */
    public static function supports(IOInterface $io, Config $config, $url, $deep = false)
    {
        if (Preg::isMatch('#(^(?:https?|ssh)://(?:[^@]@)?(?:chiselapp\.com|fossil\.))#i', $url)) {
            return true;
        }

if (Preg::isMatch('!/fossil/|\.fossil!', $url)) {
            return true;
        }

// local filesystem
        if (Filesystem::isLocalPath($url)) {
            $url = Filesystem::getPlatformPath($url);
            if (!is_dir($url)) {
                return false;
            }

$process = new ProcessExecutor($io);
            // check whether there is a fossil repo in that path
            if ($process->execute('fossil info', $output, $url) === 0) {
                return true;
            }
        }

return false;
    }
}
<?php

namespace Composer\Repository;

use Composer\IO\IOInterface;
use Composer\Config;
use Composer\EventDispatcher\EventDispatcher;
use Composer\Package\PackageInterface;
use Composer\Util\HttpDownloader;
use Composer\Util\ProcessExecutor;

/**
 * Repositories manager.
 *
 * @author Jordi Boggiano <j.boggiano@seld.be>
 * @author Konstantin Kudryashov <ever.zet@gmail.com>
 * @author François Pluchino <francois.pluchino@opendisplay.com>
 */
class RepositoryManager
{
    /** @var InstalledRepositoryInterface */
    private $localRepository;
    /** @var list<RepositoryInterface> */
    private $repositories = array();
    /** @var array<string, class-string<RepositoryInterface>> */
    private $repositoryClasses = array();
    /** @var IOInterface */
    private $io;
    /** @var Config */
    private $config;
    /** @var HttpDownloader */
    private $httpDownloader;
    /** @var ?EventDispatcher */
    private $eventDispatcher;
    /** @var ProcessExecutor */
    private $process;

public function __construct(IOInterface $io, Config $config, HttpDownloader $httpDownloader, EventDispatcher $eventDispatcher = null, ProcessExecutor $process = null)
    {
        $this->io = $io;
        $this->config = $config;
        $this->httpDownloader = $httpDownloader;
        $this->eventDispatcher = $eventDispatcher;
        $this->process = $process ?: new ProcessExecutor($io);
    }

/**
     * Searches for a package by its name and version in managed repositories.
     *
     * @param string                                                 $name       package name
     * @param string|\Composer\Semver\Constraint\ConstraintInterface $constraint package version or version constraint to match against
     *
     * @return PackageInterface|null
     */
    public function findPackage($name, $constraint)
    {
        foreach ($this->repositories as $repository) {
            /** @var RepositoryInterface $repository */
            if ($package = $repository->findPackage($name, $constraint)) {
                return $package;
            }
        }

return null;
    }

/**
     * Searches for all packages matching a name and optionally a version in managed repositories.
     *
     * @param string                                                 $name       package name
     * @param string|\Composer\Semver\Constraint\ConstraintInterface $constraint package version or version constraint to match against
     *
     * @return PackageInterface[]
     */
    public function findPackages($name, $constraint)
    {
        $packages = array();

foreach ($this->getRepositories() as $repository) {
            $packages = array_merge($packages, $repository->findPackages($name, $constraint));
        }

return $packages;
    }

/**
     * Adds repository
     *
     * @param RepositoryInterface $repository repository instance
     *
     * @return void
     */
    public function addRepository(RepositoryInterface $repository)
    {
        $this->repositories[] = $repository;
    }

/**
     * Adds a repository to the beginning of the chain
     *
     * This is useful when injecting additional repositories that should trump Packagist, e.g. from a plugin.
     *
     * @param RepositoryInterface $repository repository instance
     *
     * @return void
     */
    public function prependRepository(RepositoryInterface $repository)
    {
        array_unshift($this->repositories, $repository);
    }

/**
     * Returns a new repository for a specific installation type.
     *
     * @param  string                    $type   repository type
     * @param  array<string, mixed>      $config repository configuration
     * @param  string                    $name   repository name
     * @throws \InvalidArgumentException if repository for provided type is not registered
     * @return RepositoryInterface
     */
    public function createRepository($type, $config, $name = null)
    {
        if (!isset($this->repositoryClasses[$type])) {
            throw new \InvalidArgumentException('Repository type is not registered: '.$type);
        }

if (isset($config['packagist']) && false === $config['packagist']) {
            $this->io->writeError('<warning>Repository "'.$name.'" ('.json_encode($config).') has a packagist key which should be in its own repository definition</warning>');
        }

$class = $this->repositoryClasses[$type];

if (isset($config['only']) || isset($config['exclude']) || isset($config['canonical'])) {
            $filterConfig = $config;
            unset($config['only'], $config['exclude'], $config['canonical']);
        }

$repository = new $class($config, $this->io, $this->config, $this->httpDownloader, $this->eventDispatcher, $this->process);

if (isset($filterConfig)) {
            $repository = new FilterRepository($repository, $filterConfig);
        }

return $repository;
    }

/**
     * Stores repository class for a specific installation type.
     *
     * @param string $type  installation type
     * @param class-string<RepositoryInterface> $class class name of the repo implementation
     *
     * @return void
     */
    public function setRepositoryClass($type, $class)
    {
        $this->repositoryClasses[$type] = $class;
    }

/**
     * Returns all repositories, except local one.
     *
     * @return RepositoryInterface[]
     */
    public function getRepositories()
    {
        return $this->repositories;
    }

/**
     * Sets local repository for the project.
     *
     * @param InstalledRepositoryInterface $repository repository instance
     *
     * @return void
     */
    public function setLocalRepository(InstalledRepositoryInterface $repository)
    {
        $this->localRepository = $repository;
    }

/**
     * Returns local repository for the project.
     *
     * @return InstalledRepositoryInterface
     */
    public function getLocalRepository()
    {
        return $this->localRepository;
    }
}
<?php

namespace Composer\Repository;

use Composer\DependencyResolver\PoolOptimizer;
use Composer\DependencyResolver\PolicyInterface;
use Composer\DependencyResolver\Pool;
use Composer\DependencyResolver\PoolBuilder;
use Composer\DependencyResolver\Request;
use Composer\EventDispatcher\EventDispatcher;
use Composer\IO\IOInterface;
use Composer\IO\NullIO;
use Composer\Package\BasePackage;
use Composer\Package\AliasPackage;
use Composer\Package\CompleteAliasPackage;
use Composer\Package\CompletePackage;
use Composer\Semver\Constraint\ConstraintInterface;
use Composer\Package\Version\StabilityFilter;

/**
 * @author Nils Adermann <naderman@naderman.de>
 */
class RepositorySet
{
    /**
     * Packages are returned even though their stability does not match the required stability
     */
    const ALLOW_UNACCEPTABLE_STABILITIES = 1;
    /**
     * Packages will be looked up in all repositories, even after they have been found in a higher prio one
     */
    const ALLOW_SHADOWED_REPOSITORIES = 2;

/**
     * @var array[]
     * @phpstan-var array<string, array<string, array{alias: string, alias_normalized: string}>>
     */
    private $rootAliases;

/**
     * @var string[]
     * @phpstan-var array<string, string>
     */
    private $rootReferences;

/** @var RepositoryInterface[] */
    private $repositories = array();

/**
     * @var int[] array of stability => BasePackage::STABILITY_* value
     * @phpstan-var array<string, BasePackage::STABILITY_*>
     */
    private $acceptableStabilities;

/**
     * @var int[] array of package name => BasePackage::STABILITY_* value
     * @phpstan-var array<string, BasePackage::STABILITY_*>
     */
    private $stabilityFlags;

/**
     * @var ConstraintInterface[]
     * @phpstan-var array<string, ConstraintInterface>
     */
    private $rootRequires;

/** @var bool */
    private $locked = false;
    /** @var bool */
    private $allowInstalledRepositories = false;

/**
     * In most cases if you are looking to use this class as a way to find packages from repositories
     * passing minimumStability is all you need to worry about. The rest is for advanced pool creation including
     * aliases, pinned references and other special cases.
     *
     * @param string $minimumStability
     * @param int[]  $stabilityFlags   an array of package name => BasePackage::STABILITY_* value
     * @phpstan-param array<string, BasePackage::STABILITY_*> $stabilityFlags
     * @param array[] $rootAliases
     * @phpstan-param list<array{package: string, version: string, alias: string, alias_normalized: string}> $rootAliases
     * @param string[] $rootReferences an array of package name => source reference
     * @phpstan-param array<string, string> $rootReferences
     * @param ConstraintInterface[] $rootRequires an array of package name => constraint from the root package
     * @phpstan-param array<string, ConstraintInterface> $rootRequires
     */
    public function __construct($minimumStability = 'stable', array $stabilityFlags = array(), array $rootAliases = array(), array $rootReferences = array(), array $rootRequires = array())
    {
        $this->rootAliases = self::getRootAliasesPerPackage($rootAliases);
        $this->rootReferences = $rootReferences;

$this->acceptableStabilities = array();
        foreach (BasePackage::$stabilities as $stability => $value) {
            if ($value <= BasePackage::$stabilities[$minimumStability]) {
                $this->acceptableStabilities[$stability] = $value;
            }
        }
        $this->stabilityFlags = $stabilityFlags;
        $this->rootRequires = $rootRequires;
        foreach ($rootRequires as $name => $constraint) {
            if (PlatformRepository::isPlatformPackage($name)) {
                unset($this->rootRequires[$name]);
            }
        }
    }

/**
     * @param bool $allow
     *
     * @return void
     */
    public function allowInstalledRepositories($allow = true)
    {
        $this->allowInstalledRepositories = $allow;
    }

/**
     * @return ConstraintInterface[] an array of package name => constraint from the root package, platform requirements excluded
     * @phpstan-return array<string, ConstraintInterface>
     */
    public function getRootRequires()
    {
        return $this->rootRequires;
    }

/**
     * Adds a repository to this repository set
     *
     * The first repos added have a higher priority. As soon as a package is found in any
     * repository the search for that package ends, and following repos will not be consulted.
     *
     * @param RepositoryInterface $repo A package repository
     *
     * @return void
     */
    public function addRepository(RepositoryInterface $repo)
    {
        if ($this->locked) {
            throw new \RuntimeException("Pool has already been created from this repository set, it cannot be modified anymore.");
        }

if ($repo instanceof CompositeRepository) {
            $repos = $repo->getRepositories();
        } else {
            $repos = array($repo);
        }

foreach ($repos as $repo) {
            $this->repositories[] = $repo;
        }
    }

/**
     * Find packages providing or matching a name and optionally meeting a constraint in all repositories
     *
     * Returned in the order of repositories, matching priority
     *
     * @param  string                   $name
     * @param  ConstraintInterface|null $constraint
     * @param  int                      $flags      any of the ALLOW_* constants from this class to tweak what is returned
     * @return BasePackage[]
     */
    public function findPackages($name, ConstraintInterface $constraint = null, $flags = 0)
    {
        $ignoreStability = ($flags & self::ALLOW_UNACCEPTABLE_STABILITIES) !== 0;
        $loadFromAllRepos = ($flags & self::ALLOW_SHADOWED_REPOSITORIES) !== 0;

$packages = array();
        if ($loadFromAllRepos) {
            foreach ($this->repositories as $repository) {
                $packages[] = $repository->findPackages($name, $constraint) ?: array();
            }
        } else {
            foreach ($this->repositories as $repository) {
                $result = $repository->loadPackages(array($name => $constraint), $ignoreStability ? BasePackage::$stabilities : $this->acceptableStabilities, $ignoreStability ? array() : $this->stabilityFlags);

$packages[] = $result['packages'];
                foreach ($result['namesFound'] as $nameFound) {
                    // avoid loading the same package again from other repositories once it has been found
                    if ($name === $nameFound) {
                        break 2;
                    }
                }
            }
        }

$candidates = $packages ? call_user_func_array('array_merge', $packages) : array();

// when using loadPackages above (!$loadFromAllRepos) the repos already filter for stability so no need to do it again
        if ($ignoreStability || !$loadFromAllRepos) {
            return $candidates;
        }

$result = array();
        foreach ($candidates as $candidate) {
            if ($this->isPackageAcceptable($candidate->getNames(), $candidate->getStability())) {
                $result[] = $candidate;
            }
        }

return $result;
    }

/**
     * @param  string   $packageName
     *
     * @return array[] an array with the provider name as key and value of array('name' => '...', 'description' => '...', 'type' => '...')
     * @phpstan-return array<string, array{name: string, description: string, type: string}>
     */
    public function getProviders($packageName)
    {
        $providers = array();
        foreach ($this->repositories as $repository) {
            if ($repoProviders = $repository->getProviders($packageName)) {
                $providers = array_merge($providers, $repoProviders);
            }
        }

return $providers;
    }

/**
     * Check for each given package name whether it would be accepted by this RepositorySet in the given $stability
     *
     * @param  string[] $names
     * @param  string   $stability one of 'stable', 'RC', 'beta', 'alpha' or 'dev'
     * @return bool
     */
    public function isPackageAcceptable($names, $stability)
    {
        return StabilityFilter::isPackageAcceptable($this->acceptableStabilities, $this->stabilityFlags, $names, $stability);
    }

/**
     * Create a pool for dependency resolution from the packages in this repository set.
     *
     * @return Pool
     */
    public function createPool(Request $request, IOInterface $io, EventDispatcher $eventDispatcher = null, PoolOptimizer $poolOptimizer = null)
    {
        $poolBuilder = new PoolBuilder($this->acceptableStabilities, $this->stabilityFlags, $this->rootAliases, $this->rootReferences, $io, $eventDispatcher, $poolOptimizer);

foreach ($this->repositories as $repo) {
            if (($repo instanceof InstalledRepositoryInterface || $repo instanceof InstalledRepository) && !$this->allowInstalledRepositories) {
                throw new \LogicException('The pool can not accept packages from an installed repository');
            }
        }

$this->locked = true;

return $poolBuilder->buildPool($this->repositories, $request);
    }

/**
     * Create a pool for dependency resolution from the packages in this repository set.
     *
     * @return Pool
     */
    public function createPoolWithAllPackages()
    {
        foreach ($this->repositories as $repo) {
            if (($repo instanceof InstalledRepositoryInterface || $repo instanceof InstalledRepository) && !$this->allowInstalledRepositories) {
                throw new \LogicException('The pool can not accept packages from an installed repository');
            }
        }

$this->locked = true;

$packages = array();
        foreach ($this->repositories as $repository) {
            foreach ($repository->getPackages() as $package) {
                $packages[] = $package;

if (isset($this->rootAliases[$package->getName()][$package->getVersion()])) {
                    $alias = $this->rootAliases[$package->getName()][$package->getVersion()];
                    while ($package instanceof AliasPackage) {
                        $package = $package->getAliasOf();
                    }
                    if ($package instanceof CompletePackage) {
                        $aliasPackage = new CompleteAliasPackage($package, $alias['alias_normalized'], $alias['alias']);
                    } else {
                        $aliasPackage = new AliasPackage($package, $alias['alias_normalized'], $alias['alias']);
                    }
                    $aliasPackage->setRootPackageAlias(true);
                    $packages[] = $aliasPackage;
                }
            }
        }

return new Pool($packages);
    }

/**
     * @param string $packageName
     *
     * @return Pool
     */
    public function createPoolForPackage($packageName, LockArrayRepository $lockedRepo = null)
    {
        // TODO unify this with above in some simpler version without "request"?
        return $this->createPoolForPackages(array($packageName), $lockedRepo);
    }

/**
     * @param string[] $packageNames
     *
     * @return Pool
     */
    public function createPoolForPackages($packageNames, LockArrayRepository $lockedRepo = null)
    {
        $request = new Request($lockedRepo);

foreach ($packageNames as $packageName) {
            if (PlatformRepository::isPlatformPackage($packageName)) {
                throw new \LogicException('createPoolForPackage(s) can not be used for platform packages, as they are never loaded by the PoolBuilder which expects them to be fixed. Use createPoolWithAllPackages or pass in a proper request with the platform packages you need fixed in it.');
            }

$request->requireName($packageName);
        }

return $this->createPool($request, new NullIO());
    }

/**
     * @param array[] $aliases
     * @phpstan-param list<array{package: string, version: string, alias: string, alias_normalized: string}> $aliases
     *
     * @return array<string, array<string, array{alias: string, alias_normalized: string}>>
     */
    private static function getRootAliasesPerPackage(array $aliases)
    {
        $normalizedAliases = array();

foreach ($aliases as $alias) {
            $normalizedAliases[$alias['package']][$alias['version']] = array(
                'alias' => $alias['alias'],
                'alias_normalized' => $alias['alias_normalized'],
            );
        }

return $normalizedAliases;
    }
}
<?php

namespace Composer\Installer;

use Composer\Repository\InstalledRepositoryInterface;
use Composer\Package\PackageInterface;
use Composer\IO\IOInterface;
use Composer\DependencyResolver\Operation\UpdateOperation;
use Composer\DependencyResolver\Operation\InstallOperation;
use Composer\DependencyResolver\Operation\UninstallOperation;

/**
 * Metapackage installation manager.
 *
 * @author Martin Hasoň <martin.hason@gmail.com>
 */
class MetapackageInstaller implements InstallerInterface
{
    /** @var IOInterface */
    private $io;

public function __construct(IOInterface $io)
    {
        $this->io = $io;
    }

/**
     * @inheritDoc
     */
    public function supports($packageType)
    {
        return $packageType === 'metapackage';
    }

/**
     * @inheritDoc
     */
    public function isInstalled(InstalledRepositoryInterface $repo, PackageInterface $package)
    {
        return $repo->hasPackage($package);
    }

/**
     * @inheritDoc
     */
    public function download(PackageInterface $package, PackageInterface $prevPackage = null)
    {
        // noop
        return \React\Promise\resolve();
    }

/**
     * @inheritDoc
     */
    public function prepare($type, PackageInterface $package, PackageInterface $prevPackage = null)
    {
        // noop
        return \React\Promise\resolve();
    }

/**
     * @inheritDoc
     */
    public function cleanup($type, PackageInterface $package, PackageInterface $prevPackage = null)
    {
        // noop
        return \React\Promise\resolve();
    }

/**
     * @inheritDoc
     */
    public function install(InstalledRepositoryInterface $repo, PackageInterface $package)
    {
        $this->io->writeError("  - " . InstallOperation::format($package));

$repo->addPackage(clone $package);

return \React\Promise\resolve();
    }

/**
     * @inheritDoc
     */
    public function update(InstalledRepositoryInterface $repo, PackageInterface $initial, PackageInterface $target)
    {
        if (!$repo->hasPackage($initial)) {
            throw new \InvalidArgumentException('Package is not installed: '.$initial);
        }

$this->io->writeError("  - " . UpdateOperation::format($initial, $target));

$repo->removePackage($initial);
        $repo->addPackage(clone $target);

return \React\Promise\resolve();
    }

/**
     * @inheritDoc
     */
    public function uninstall(InstalledRepositoryInterface $repo, PackageInterface $package)
    {
        if (!$repo->hasPackage($package)) {
            throw new \InvalidArgumentException('Package is not installed: '.$package);
        }

$this->io->writeError("  - " . UninstallOperation::format($package));

$repo->removePackage($package);

return \React\Promise\resolve();
    }

/**
     * @inheritDoc
     */
    public function getInstallPath(PackageInterface $package)
    {
        return '';
    }
}
<?php

namespace Composer\Installer;

use Composer\Composer;
use Composer\IO\IOInterface;
use Composer\Pcre\Preg;
use Composer\Repository\InstalledRepositoryInterface;
use Composer\Package\PackageInterface;
use Composer\Util\Filesystem;
use Composer\Util\Silencer;
use Composer\Util\Platform;
use React\Promise\PromiseInterface;
use Composer\Downloader\DownloadManager;

/**
 * Package installation manager.
 *
 * @author Jordi Boggiano <j.boggiano@seld.be>
 * @author Konstantin Kudryashov <ever.zet@gmail.com>
 */
class LibraryInstaller implements InstallerInterface, BinaryPresenceInterface
{
    /** @var Composer */
    protected $composer;
    /** @var string */
    protected $vendorDir;
    /** @var DownloadManager */
    protected $downloadManager;
    /** @var IOInterface */
    protected $io;
    /** @var string */
    protected $type;
    /** @var Filesystem */
    protected $filesystem;
    /** @var BinaryInstaller */
    protected $binaryInstaller;

/**
     * Initializes library installer.
     *
     * @param IOInterface     $io
     * @param Composer        $composer
     * @param string|null     $type
     * @param Filesystem      $filesystem
     * @param BinaryInstaller $binaryInstaller
     */
    public function __construct(IOInterface $io, Composer $composer, $type = 'library', Filesystem $filesystem = null, BinaryInstaller $binaryInstaller = null)
    {
        $this->composer = $composer;
        $this->downloadManager = $composer->getDownloadManager();
        $this->io = $io;
        $this->type = $type;

$this->filesystem = $filesystem ?: new Filesystem();
        $this->vendorDir = rtrim($composer->getConfig()->get('vendor-dir'), '/');
        $this->binaryInstaller = $binaryInstaller ?: new BinaryInstaller($this->io, rtrim($composer->getConfig()->get('bin-dir'), '/'), $composer->getConfig()->get('bin-compat'), $this->filesystem, $this->vendorDir);
    }

/**
     * @inheritDoc
     */
    public function supports($packageType)
    {
        return $packageType === $this->type || null === $this->type;
    }

/**
     * @inheritDoc
     */
    public function isInstalled(InstalledRepositoryInterface $repo, PackageInterface $package)
    {
        if (!$repo->hasPackage($package)) {
            return false;
        }

$installPath = $this->getInstallPath($package);

if (Filesystem::isReadable($installPath)) {
            return true;
        }

return (Platform::isWindows() && $this->filesystem->isJunction($installPath)) || is_link($installPath);
    }

/**
     * @inheritDoc
     */
    public function download(PackageInterface $package, PackageInterface $prevPackage = null)
    {
        $this->initializeVendorDir();
        $downloadPath = $this->getInstallPath($package);

return $this->downloadManager->download($package, $downloadPath, $prevPackage);
    }

/**
     * @inheritDoc
     */
    public function prepare($type, PackageInterface $package, PackageInterface $prevPackage = null)
    {
        $this->initializeVendorDir();
        $downloadPath = $this->getInstallPath($package);

return $this->downloadManager->prepare($type, $package, $downloadPath, $prevPackage);
    }

/**
     * @inheritDoc
     */
    public function cleanup($type, PackageInterface $package, PackageInterface $prevPackage = null)
    {
        $this->initializeVendorDir();
        $downloadPath = $this->getInstallPath($package);

return $this->downloadManager->cleanup($type, $package, $downloadPath, $prevPackage);
    }

/**
     * @inheritDoc
     */
    public function install(InstalledRepositoryInterface $repo, PackageInterface $package)
    {
        $this->initializeVendorDir();
        $downloadPath = $this->getInstallPath($package);

// remove the binaries if it appears the package files are missing
        if (!Filesystem::isReadable($downloadPath) && $repo->hasPackage($package)) {
            $this->binaryInstaller->removeBinaries($package);
        }

$promise = $this->installCode($package);
        if (!$promise instanceof PromiseInterface) {
            $promise = \React\Promise\resolve();
        }

$binaryInstaller = $this->binaryInstaller;
        $installPath = $this->getInstallPath($package);

return $promise->then(function () use ($binaryInstaller, $installPath, $package, $repo) {
            $binaryInstaller->installBinaries($package, $installPath);
            if (!$repo->hasPackage($package)) {
                $repo->addPackage(clone $package);
            }
        });
    }

$this->initializeVendorDir();

$this->binaryInstaller->removeBinaries($initial);
        $promise = $this->updateCode($initial, $target);
        if (!$promise instanceof PromiseInterface) {
            $promise = \React\Promise\resolve();
        }

$binaryInstaller = $this->binaryInstaller;
        $installPath = $this->getInstallPath($target);

return $promise->then(function () use ($binaryInstaller, $installPath, $target, $initial, $repo) {
            $binaryInstaller->installBinaries($target, $installPath);
            $repo->removePackage($initial);
            if (!$repo->hasPackage($target)) {
                $repo->addPackage(clone $target);
            }
        });
    }

$promise = $this->removeCode($package);
        if (!$promise instanceof PromiseInterface) {
            $promise = \React\Promise\resolve();
        }

$binaryInstaller = $this->binaryInstaller;
        $downloadPath = $this->getPackageBasePath($package);
        $filesystem = $this->filesystem;

return $promise->then(function () use ($binaryInstaller, $filesystem, $downloadPath, $package, $repo) {
            $binaryInstaller->removeBinaries($package);
            $repo->removePackage($package);

if (strpos($package->getName(), '/')) {
                $packageVendorDir = dirname($downloadPath);
                if (is_dir($packageVendorDir) && $filesystem->isDirEmpty($packageVendorDir)) {
                    Silencer::call('rmdir', $packageVendorDir);
                }
            }
        });
    }

/**
     * @inheritDoc
     */
    public function getInstallPath(PackageInterface $package)
    {
        $this->initializeVendorDir();

$basePath = ($this->vendorDir ? $this->vendorDir.'/' : '') . $package->getPrettyName();
        $targetDir = $package->getTargetDir();

return $basePath . ($targetDir ? '/'.$targetDir : '');
    }

/**
     * Make sure binaries are installed for a given package.
     *
     * @param PackageInterface $package Package instance
     */
    public function ensureBinariesPresence(PackageInterface $package)
    {
        $this->binaryInstaller->installBinaries($package, $this->getInstallPath($package), false);
    }

/**
     * Returns the base path of the package without target-dir path
     *
     * It is used for BC as getInstallPath tends to be overridden by
     * installer plugins but not getPackageBasePath
     *
     * @param  PackageInterface $package
     * @return string
     */
    protected function getPackageBasePath(PackageInterface $package)
    {
        $installPath = $this->getInstallPath($package);
        $targetDir = $package->getTargetDir();

if ($targetDir) {
            return Preg::replace('{/*'.str_replace('/', '/+', preg_quote($targetDir)).'/?$}', '', $installPath);
        }

return $installPath;
    }

/**
     * @return PromiseInterface|null
     */
    protected function installCode(PackageInterface $package)
    {
        $downloadPath = $this->getInstallPath($package);

return $this->downloadManager->install($package, $downloadPath);
    }

/**
     * @return PromiseInterface|null
     */
    protected function updateCode(PackageInterface $initial, PackageInterface $target)
    {
        $initialDownloadPath = $this->getInstallPath($initial);
        $targetDownloadPath = $this->getInstallPath($target);
        if ($targetDownloadPath !== $initialDownloadPath) {
            // if the target and initial dirs intersect, we force a remove + install
            // to avoid the rename wiping the target dir as part of the initial dir cleanup
            if (strpos($initialDownloadPath, $targetDownloadPath) === 0
                || strpos($targetDownloadPath, $initialDownloadPath) === 0
            ) {
                $promise = $this->removeCode($initial);
                if (!$promise instanceof PromiseInterface) {
                    $promise = \React\Promise\resolve();
                }

$self = $this;

return $promise->then(function () use ($self, $target) {
                    $reflMethod = new \ReflectionMethod($self, 'installCode');
                    $reflMethod->setAccessible(true);

// equivalent of $this->installCode($target) with php 5.3 support
                    // TODO remove this once 5.3 support is dropped
                    return $reflMethod->invoke($self, $target);
                });
            }

$this->filesystem->rename($initialDownloadPath, $targetDownloadPath);
        }

return $this->downloadManager->update($initial, $target, $targetDownloadPath);
    }

/**
     * @return PromiseInterface|null
     */
    protected function removeCode(PackageInterface $package)
    {
        $downloadPath = $this->getPackageBasePath($package);

return $this->downloadManager->remove($package, $downloadPath);
    }

/**
     * @return void
     */
    protected function initializeVendorDir()
    {
        $this->filesystem->ensureDirectoryExists($this->vendorDir);
        $this->vendorDir = realpath($this->vendorDir);
    }
}
<?php

namespace Composer\Installer;

use Composer\Composer;
use Composer\IO\IOInterface;
use Composer\Repository\InstalledRepositoryInterface;
use Composer\Package\PackageInterface;
use Composer\Util\Filesystem;
use Composer\Util\Platform;
use React\Promise\PromiseInterface;

/**
 * Installer for plugin packages
 *
 * @author Jordi Boggiano <j.boggiano@seld.be>
 * @author Nils Adermann <naderman@naderman.de>
 */
class PluginInstaller extends LibraryInstaller
{
    /**
     * Initializes Plugin installer.
     *
     * @param IOInterface $io
     * @param Composer    $composer
     */
    public function __construct(IOInterface $io, Composer $composer, Filesystem $fs = null, BinaryInstaller $binaryInstaller = null)
    {
        parent::__construct($io, $composer, 'composer-plugin', $fs, $binaryInstaller);
    }

/**
     * @inheritDoc
     */
    public function supports($packageType)
    {
        return $packageType === 'composer-plugin' || $packageType === 'composer-installer';
    }

/**
     * @inheritDoc
     */
    public function download(PackageInterface $package, PackageInterface $prevPackage = null)
    {
        $extra = $package->getExtra();
        if (empty($extra['class'])) {
            throw new \UnexpectedValueException('Error while installing '.$package->getPrettyName().', composer-plugin packages should have a class defined in their extra key to be usable.');
        }

return parent::download($package, $prevPackage);
    }

/**
     * @inheritDoc
     */
    public function install(InstalledRepositoryInterface $repo, PackageInterface $package)
    {
        $promise = parent::install($repo, $package);
        if (!$promise instanceof PromiseInterface) {
            $promise = \React\Promise\resolve();
        }

$pluginManager = $this->composer->getPluginManager();
        $self = $this;

return $promise->then(function () use ($self, $pluginManager, $package, $repo) {
            try {
                Platform::workaroundFilesystemIssues();
                $pluginManager->registerPackage($package, true);
            } catch (\Exception $e) {
                $self->rollbackInstall($e, $repo, $package);
            }
        });
    }

/**
     * @inheritDoc
     */
    public function update(InstalledRepositoryInterface $repo, PackageInterface $initial, PackageInterface $target)
    {
        $promise = parent::update($repo, $initial, $target);
        if (!$promise instanceof PromiseInterface) {
            $promise = \React\Promise\resolve();
        }

$pluginManager = $this->composer->getPluginManager();
        $self = $this;

return $promise->then(function () use ($self, $pluginManager, $initial, $target, $repo) {
            try {
                Platform::workaroundFilesystemIssues();
                $pluginManager->deactivatePackage($initial);
                $pluginManager->registerPackage($target, true);
            } catch (\Exception $e) {
                $self->rollbackInstall($e, $repo, $target);
            }
        });
    }

public function uninstall(InstalledRepositoryInterface $repo, PackageInterface $package)
    {
        $this->composer->getPluginManager()->uninstallPackage($package);

return parent::uninstall($repo, $package);
    }

/**
     * TODO v3 should make this private once we can drop PHP 5.3 support
     * @private
     *
     * @return void
     */
    public function rollbackInstall(\Exception $e, InstalledRepositoryInterface $repo, PackageInterface $package)
    {
        $this->io->writeError('Plugin initialization failed ('.$e->getMessage().'), uninstalling plugin');
        parent::uninstall($repo, $package);
        throw $e;
    }
}
<?php

namespace Composer\Installer;

use Composer\Repository\InstalledRepositoryInterface;
use Composer\Package\PackageInterface;

/**
 * Does not install anything but marks packages installed in the repo
 *
 * Useful for dry runs
 *
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class NoopInstaller implements InstallerInterface
{
    /**
     * @inheritDoc
     */
    public function supports($packageType)
    {
        return true;
    }

/**
     * @inheritDoc
     */
    public function isInstalled(InstalledRepositoryInterface $repo, PackageInterface $package)
    {
        return $repo->hasPackage($package);
    }

/**
     * @inheritDoc
     */
    public function download(PackageInterface $package, PackageInterface $prevPackage = null)
    {
        return \React\Promise\resolve();
    }

/**
     * @inheritDoc
     */
    public function prepare($type, PackageInterface $package, PackageInterface $prevPackage = null)
    {
        return \React\Promise\resolve();
    }

/**
     * @inheritDoc
     */
    public function cleanup($type, PackageInterface $package, PackageInterface $prevPackage = null)
    {
        return \React\Promise\resolve();
    }

/**
     * @inheritDoc
     */
    public function install(InstalledRepositoryInterface $repo, PackageInterface $package)
    {
        if (!$repo->hasPackage($package)) {
            $repo->addPackage(clone $package);
        }

return \React\Promise\resolve();
    }

$repo->removePackage($initial);
        if (!$repo->hasPackage($target)) {
            $repo->addPackage(clone $target);
        }

return \React\Promise\resolve();
    }

/**
     * @inheritDoc
     */
    public function getInstallPath(PackageInterface $package)
    {
        $targetDir = $package->getTargetDir();

return $package->getPrettyName() . ($targetDir ? '/'.$targetDir : '');
    }
}
<?php

namespace Composer\Installer;

use Composer\Package\PackageInterface;
use Composer\Repository\InstalledRepositoryInterface;
use InvalidArgumentException;
use React\Promise\PromiseInterface;

/**
 * Interface for the package installation manager.
 *
 * @author Konstantin Kudryashov <ever.zet@gmail.com>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
interface InstallerInterface
{
    /**
     * Decides if the installer supports the given type
     *
     * @param  string $packageType
     * @return bool
     */
    public function supports($packageType);

/**
     * Checks that provided package is installed.
     *
     * @param InstalledRepositoryInterface $repo    repository in which to check
     * @param PackageInterface             $package package instance
     *
     * @return bool
     */
    public function isInstalled(InstalledRepositoryInterface $repo, PackageInterface $package);

/**
     * Downloads the files needed to later install the given package.
     *
     * @param  PackageInterface      $package     package instance
     * @param  PackageInterface      $prevPackage previous package instance in case of an update
     * @return PromiseInterface|null
     */
    public function download(PackageInterface $package, PackageInterface $prevPackage = null);

/**
     * Do anything that needs to be done between all downloads have been completed and the actual operation is executed
     *
     * All packages get first downloaded, then all together prepared, then all together installed/updated/uninstalled. Therefore
     * for error recovery it is important to avoid failing during install/update/uninstall as much as possible, and risky things or
     * user prompts should happen in the prepare step rather. In case of failure, cleanup() will be called so that changes can
     * be undone as much as possible.
     *
     * @param  string                $type        one of install/update/uninstall
     * @param  PackageInterface      $package     package instance
     * @param  PackageInterface      $prevPackage previous package instance in case of an update
     * @return PromiseInterface|null
     */
    public function prepare($type, PackageInterface $package, PackageInterface $prevPackage = null);

/**
     * Installs specific package.
     *
     * @param  InstalledRepositoryInterface $repo    repository in which to check
     * @param  PackageInterface             $package package instance
     * @return PromiseInterface|null
     */
    public function install(InstalledRepositoryInterface $repo, PackageInterface $package);

/**
     * Updates specific package.
     *
     * @param  InstalledRepositoryInterface $repo    repository in which to check
     * @param  PackageInterface             $initial already installed package version
     * @param  PackageInterface             $target  updated version
     * @throws InvalidArgumentException     if $initial package is not installed
     * @return PromiseInterface|null
     */
    public function update(InstalledRepositoryInterface $repo, PackageInterface $initial, PackageInterface $target);

/**
     * Uninstalls specific package.
     *
     * @param  InstalledRepositoryInterface $repo    repository in which to check
     * @param  PackageInterface             $package package instance
     * @return PromiseInterface|null
     */
    public function uninstall(InstalledRepositoryInterface $repo, PackageInterface $package);

/**
     * Do anything to cleanup changes applied in the prepare or install/update/uninstall steps
     *
     * Note that cleanup will be called for all packages regardless if they failed an operation or not, to give
     * all installers a change to cleanup things they did previously, so you need to keep track of changes
     * applied in the installer/downloader themselves.
     *
     * @param  string                $type        one of install/update/uninstall
     * @param  PackageInterface      $package     package instance
     * @param  PackageInterface      $prevPackage previous package instance in case of an update
     * @return PromiseInterface|null
     */
    public function cleanup($type, PackageInterface $package, PackageInterface $prevPackage = null);

/**
     * Returns the installation path of a package
     *
     * @param  PackageInterface $package
     * @return string           path to install to, which MUST not end with a slash
     */
    public function getInstallPath(PackageInterface $package);
}
<?php

namespace Composer\Installer;

use Composer\Composer;
use Composer\DependencyResolver\Transaction;
use Composer\EventDispatcher\Event;
use Composer\IO\IOInterface;

class InstallerEvent extends Event
{
    /**
     * @var Composer
     */
    private $composer;

/**
     * @var IOInterface
     */
    private $io;

/**
     * @var bool
     */
    private $devMode;

/**
     * @var bool
     */
    private $executeOperations;

/**
     * @var Transaction
     */
    private $transaction;

/**
     * Constructor.
     *
     * @param string      $eventName
     * @param Composer    $composer
     * @param IOInterface $io
     * @param bool        $devMode
     * @param bool        $executeOperations
     * @param Transaction $transaction
     */
    public function __construct($eventName, Composer $composer, IOInterface $io, $devMode, $executeOperations, Transaction $transaction)
    {
        parent::__construct($eventName);

$this->composer = $composer;
        $this->io = $io;
        $this->devMode = $devMode;
        $this->executeOperations = $executeOperations;
        $this->transaction = $transaction;
    }

/**
     * @return Composer
     */
    public function getComposer()
    {
        return $this->composer;
    }

/**
     * @return IOInterface
     */
    public function getIO()
    {
        return $this->io;
    }

/**
     * @return bool
     */
    public function isDevMode()
    {
        return $this->devMode;
    }

/**
     * @return bool
     */
    public function isExecutingOperations()
    {
        return $this->executeOperations;
    }

/**
     * @return Transaction|null
     */
    public function getTransaction()
    {
        return $this->transaction;
    }
}
<?php

namespace Composer\Installer;

use Composer\IO\IOInterface;
use Composer\Package\PackageInterface;
use Composer\Pcre\Preg;
use Composer\Util\Filesystem;
use Composer\Util\Platform;
use Composer\Util\ProcessExecutor;
use Composer\Util\Silencer;

/**
 * Utility to handle installation of package "bin"/binaries
 *
 * @author Jordi Boggiano <j.boggiano@seld.be>
 * @author Konstantin Kudryashov <ever.zet@gmail.com>
 * @author Helmut Hummel <info@helhum.io>
 */
class BinaryInstaller
{
    /** @var string */
    protected $binDir;
    /** @var string */
    protected $binCompat;
    /** @var IOInterface */
    protected $io;
    /** @var Filesystem */
    protected $filesystem;
    /** @var string|null */
    private $vendorDir;

/**
     * @param IOInterface $io
     * @param string      $binDir
     * @param string      $binCompat
     * @param Filesystem  $filesystem
     * @param string|null $vendorDir
     */
    public function __construct(IOInterface $io, $binDir, $binCompat, Filesystem $filesystem = null, $vendorDir = null)
    {
        $this->binDir = $binDir;
        $this->binCompat = $binCompat;
        $this->io = $io;
        $this->filesystem = $filesystem ?: new Filesystem();
        $this->vendorDir = $vendorDir;
    }

/**
     * @param string $installPath
     * @param bool $warnOnOverwrite
     *
     * @return void
     */
    public function installBinaries(PackageInterface $package, $installPath, $warnOnOverwrite = true)
    {
        $binaries = $this->getBinaries($package);
        if (!$binaries) {
            return;
        }

Platform::workaroundFilesystemIssues();

foreach ($binaries as $bin) {
            $binPath = $installPath.'/'.$bin;
            if (!file_exists($binPath)) {
                $this->io->writeError('    <warning>Skipped installation of bin '.$bin.' for package '.$package->getName().': file not found in package</warning>');
                continue;
            }
            if (is_dir($binPath)) {
                $this->io->writeError('    <warning>Skipped installation of bin '.$bin.' for package '.$package->getName().': found a directory at that path</warning>');
                continue;
            }
            if (!$this->filesystem->isAbsolutePath($binPath)) {
                // in case a custom installer returned a relative path for the
                // $package, we can now safely turn it into a absolute path (as we
                // already checked the binary's existence). The following helpers
                // will require absolute paths to work properly.
                $binPath = realpath($binPath);
            }
            $this->initializeBinDir();
            $link = $this->binDir.'/'.basename($bin);
            if (file_exists($link)) {
                if (!is_link($link)) {
                    if ($warnOnOverwrite) {
                        $this->io->writeError('    Skipped installation of bin '.$bin.' for package '.$package->getName().': name conflicts with an existing file');
                    }
                    continue;
                }
                if (realpath($link) === realpath($binPath)) {
                    // It is a linked binary from a previous installation, which can be replaced with a proxy file
                    $this->filesystem->unlink($link);
                }
            }

$binCompat = $this->binCompat;
            if ($binCompat === "auto" && (Platform::isWindows() || Platform::isWindowsSubsystemForLinux())) {
                $binCompat = 'full';
            }

if ($binCompat === "full") {
                $this->installFullBinaries($binPath, $link, $bin, $package);
            } else {
                $this->installUnixyProxyBinaries($binPath, $link);
            }
            Silencer::call('chmod', $binPath, 0777 & ~umask());
        }
    }

/**
     * @return void
     */
    public function removeBinaries(PackageInterface $package)
    {
        $this->initializeBinDir();

$binaries = $this->getBinaries($package);
        if (!$binaries) {
            return;
        }
        foreach ($binaries as $bin) {
            $link = $this->binDir.'/'.basename($bin);
            if (is_link($link) || file_exists($link)) { // still checking for symlinks here for legacy support
                $this->filesystem->unlink($link);
            }
            if (is_file($link.'.bat')) {
                $this->filesystem->unlink($link.'.bat');
            }
        }

// attempt removing the bin dir in case it is left empty
        if (is_dir($this->binDir) && $this->filesystem->isDirEmpty($this->binDir)) {
            Silencer::call('rmdir', $this->binDir);
        }
    }

/**
     * @param string $bin
     *
     * @return string
     */
    public static function determineBinaryCaller($bin)
    {
        if ('.bat' === substr($bin, -4) || '.exe' === substr($bin, -4)) {
            return 'call';
        }

$handle = fopen($bin, 'r');
        $line = fgets($handle);
        fclose($handle);
        if (Preg::isMatch('{^#!/(?:usr/bin/env )?(?:[^/]+/)*(.+)$}m', $line, $match)) {
            return trim($match[1]);
        }

return 'php';
    }

/**
     * @return string[]
     */
    protected function getBinaries(PackageInterface $package)
    {
        return $package->getBinaries();
    }

/**
     * @param string $binPath
     * @param string $link
     * @param string $bin
     *
     * @return void
     */
    protected function installFullBinaries($binPath, $link, $bin, PackageInterface $package)
    {
        // add unixy support for cygwin and similar environments
        if ('.bat' !== substr($binPath, -4)) {
            $this->installUnixyProxyBinaries($binPath, $link);
            $link .= '.bat';
            if (file_exists($link)) {
                $this->io->writeError('    Skipped installation of bin '.$bin.'.bat proxy for package '.$package->getName().': a .bat proxy was already installed');
            }
        }
        if (!file_exists($link)) {
            file_put_contents($link, $this->generateWindowsProxyCode($binPath, $link));
            Silencer::call('chmod', $link, 0777 & ~umask());
        }
    }

/**
     * @param string $binPath
     * @param string $link
     *
     * @return void
     */
    protected function installUnixyProxyBinaries($binPath, $link)
    {
        file_put_contents($link, $this->generateUnixyProxyCode($binPath, $link));
        Silencer::call('chmod', $link, 0777 & ~umask());
    }

/**
     * @return void
     */
    protected function initializeBinDir()
    {
        $this->filesystem->ensureDirectoryExists($this->binDir);
        $this->binDir = realpath($this->binDir);
    }

/**
     * @param string $bin
     * @param string $link
     *
     * @return string
     */
    protected function generateWindowsProxyCode($bin, $link)
    {
        $binPath = $this->filesystem->findShortestPath($link, $bin);
        $caller = self::determineBinaryCaller($bin);

// if the target is a php file, we run the unixy proxy file
        // to ensure that _composer_autoload_path gets defined, instead
        // of running the binary directly
        if ($caller === 'php') {
            return "@ECHO OFF\r\n".
                "setlocal DISABLEDELAYEDEXPANSION\r\n".
                "SET BIN_TARGET=%~dp0/".trim(ProcessExecutor::escape(basename($link, '.bat')), '"\'')."\r\n".
                "SET COMPOSER_BIN_DIR=%~dp0\r\n".
                "{$caller} \"%BIN_TARGET%\" %*\r\n";
        }

return "@ECHO OFF\r\n".
            "setlocal DISABLEDELAYEDEXPANSION\r\n".
            "SET BIN_TARGET=%~dp0/".trim(ProcessExecutor::escape($binPath), '"\'')."\r\n".
            "SET COMPOSER_BIN_DIR=%~dp0\r\n".
            "{$caller} \"%BIN_TARGET%\" %*\r\n";
    }

/**
     * @param string $bin
     * @param string $link
     *
     * @return string
     */
    protected function generateUnixyProxyCode($bin, $link)
    {
        $binPath = $this->filesystem->findShortestPath($link, $bin);

$binDir = ProcessExecutor::escape(dirname($binPath));
        $binFile = basename($binPath);

$binContents = file_get_contents($bin);
        // For php files, we generate a PHP proxy instead of a shell one,
        // which allows calling the proxy with a custom php process
        if (Preg::isMatch('{^(#!.*\r?\n)?[\r\n\t ]*<\?php}', $binContents, $match)) {
            // carry over the existing shebang if present, otherwise add our own
            $proxyCode = empty($match[1]) ? '#!/usr/bin/env php' : trim($match[1]);
            $binPathExported = $this->filesystem->findShortestPathCode($link, $bin, false, true);
            $streamProxyCode = $streamHint = '';
            $globalsCode = '$GLOBALS[\'_composer_bin_dir\'] = __DIR__;'."\n";
            $phpunitHack1 = $phpunitHack2 = '';
            // Don't expose autoload path when vendor dir was not set in custom installers
            if ($this->vendorDir) {
                $globalsCode .= '$GLOBALS[\'_composer_autoload_path\'] = ' . $this->filesystem->findShortestPathCode($link, $this->vendorDir . '/autoload.php', false, true).";\n";
            }
            // Add workaround for PHPUnit process isolation
            if ($this->filesystem->normalizePath($bin) === $this->filesystem->normalizePath($this->vendorDir.'/phpunit/phpunit/phpunit')) {
                // workaround issue on PHPUnit 6.5+ running on PHP 8+
                $globalsCode .= '$GLOBALS[\'__PHPUNIT_ISOLATION_EXCLUDE_LIST\'] = $GLOBALS[\'__PHPUNIT_ISOLATION_BLACKLIST\'] = array(realpath('.$binPathExported.'));'."\n";
                // workaround issue on all PHPUnit versions running on PHP <8
                $phpunitHack1 = "'phpvfscomposer://'.";
                $phpunitHack2 = '
                $data = str_replace(\'__DIR__\', var_export(dirname($this->realpath), true), $data);
                $data = str_replace(\'__FILE__\', var_export($this->realpath, true), $data);';
            }
            if (trim($match[0]) !== '<?php') {
                $streamHint = ' using a stream wrapper to prevent the shebang from being output on PHP<8'."\n *";
                $streamProxyCode = <<<STREAMPROXY
if (PHP_VERSION_ID < 80000) {
    if (!class_exists('Composer\BinProxyWrapper')) {
        /**
         * @internal
         */
        final class BinProxyWrapper
        {
            private \$handle;
            private \$position;
            private \$realpath;

public function stream_open(\$path, \$mode, \$options, &\$opened_path)
            {
                // get rid of phpvfscomposer:// prefix for __FILE__ & __DIR__ resolution
                \$opened_path = substr(\$path, 17);
                \$this->realpath = realpath(\$opened_path) ?: \$opened_path;
                \$opened_path = $phpunitHack1\$this->realpath;
                \$this->handle = fopen(\$this->realpath, \$mode);
                \$this->position = 0;

return (bool) \$this->handle;
            }

public function stream_read(\$count)
            {
                \$data = fread(\$this->handle, \$count);

if (\$this->position === 0) {
                    \$data = preg_replace('{^#!.*\\r?\\n}', '', \$data);
                }$phpunitHack2

\$this->position += strlen(\$data);

return \$data;
            }

public function stream_cast(\$castAs)
            {
                return \$this->handle;
            }

public function stream_close()
            {
                fclose(\$this->handle);
            }

public function stream_lock(\$operation)
            {
                return \$operation ? flock(\$this->handle, \$operation) : true;
            }

public function stream_seek(\$offset, \$whence)
            {
                if (0 === fseek(\$this->handle, \$offset, \$whence)) {
                    \$this->position = ftell(\$this->handle);
                    return true;
                }

return false;
            }

public function stream_tell()
            {
                return \$this->position;
            }

public function stream_eof()
            {
                return feof(\$this->handle);
            }

public function stream_stat()
            {
                return array();
            }

public function stream_set_option(\$option, \$arg1, \$arg2)
            {
                return true;
            }

public function url_stat(\$path, \$flags)
            {
                \$path = substr(\$path, 17);
                if (file_exists(\$path)) {
                    return stat(\$path);
                }

return false;
            }
        }
    }

if (function_exists('stream_wrapper_register') && stream_wrapper_register('phpvfscomposer', 'Composer\BinProxyWrapper')) {
        include("phpvfscomposer://" . $binPathExported);
        exit(0);
    }
}

STREAMPROXY;
            }

return $proxyCode . "\n" . <<<PROXY
<?php

/**
 * Proxy PHP file generated by Composer
 *
 * This file includes the referenced bin path ($binPath)
 *$streamHint
 * @generated
 */

namespace Composer;

$globalsCode
$streamProxyCode
include $binPathExported;

PROXY;
        }

return <<<PROXY
#!/usr/bin/env sh

# Support bash to support `source` with fallback on $0 if this does not run with bash
# https://stackoverflow.com/a/35006505/6512
selfArg="\$BASH_SOURCE"
if [ -z "\$selfArg" ]; then
    selfArg="\$0"
fi

self=\$(realpath \$selfArg 2> /dev/null)
if [ -z "\$self" ]; then
    self="\$selfArg"
fi

dir=\$(cd "\${self%[/\\\\]*}" > /dev/null; cd $binDir && pwd)

if [ -d /proc/cygdrive ]; then
    case \$(which php) in
        \$(readlink -n /proc/cygdrive)/*)
            # We are in Cygwin using Windows php, so the path must be translated
            dir=\$(cygpath -m "\$dir");
            ;;
    esac
fi

export COMPOSER_BIN_DIR=\$(cd "\${self%[/\\\\]*}" > /dev/null; pwd)

# If bash is sourcing this file, we have to source the target as well
bashSource="\$BASH_SOURCE"
if [ -n "\$bashSource" ]; then
    if [ "\$bashSource" != "\$0" ]; then
        source "\${dir}/$binFile" "\$@"
        return
    fi
fi

"\${dir}/$binFile" "\$@"

PROXY;
    }
}
<?php

namespace Composer\Installer;

use Composer\Composer;
use Composer\IO\IOInterface;
use Composer\DependencyResolver\Operation\OperationInterface;
use Composer\Repository\RepositoryInterface;
use Composer\EventDispatcher\Event;

/**
 * The Package Event.
 *
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class PackageEvent extends Event
{
    /**
     * @var Composer
     */
    private $composer;

/**
     * @var IOInterface
     */
    private $io;

/**
     * @var bool
     */
    private $devMode;

/**
     * @var RepositoryInterface
     */
    private $localRepo;

/**
     * @var OperationInterface[]
     */
    private $operations;

/**
     * @var OperationInterface The operation instance which is being executed
     */
    private $operation;

/**
     * Constructor.
     *
     * @param string               $eventName
     * @param Composer             $composer
     * @param IOInterface          $io
     * @param bool                 $devMode
     * @param RepositoryInterface  $localRepo
     * @param OperationInterface[] $operations
     * @param OperationInterface   $operation
     */
    public function __construct($eventName, Composer $composer, IOInterface $io, $devMode, RepositoryInterface $localRepo, array $operations, OperationInterface $operation)
    {
        parent::__construct($eventName);

$this->composer = $composer;
        $this->io = $io;
        $this->devMode = $devMode;
        $this->localRepo = $localRepo;
        $this->operations = $operations;
        $this->operation = $operation;
    }

/**
     * @return Composer
     */
    public function getComposer()
    {
        return $this->composer;
    }

/**
     * @return IOInterface
     */
    public function getIO()
    {
        return $this->io;
    }

/**
     * @return bool
     */
    public function isDevMode()
    {
        return $this->devMode;
    }

/**
     * @return RepositoryInterface
     */
    public function getLocalRepo()
    {
        return $this->localRepo;
    }

/**
     * @return OperationInterface[]
     */
    public function getOperations()
    {
        return $this->operations;
    }

/**
     * Returns the package instance.
     *
     * @return OperationInterface
     */
    public function getOperation()
    {
        return $this->operation;
    }
}
<?php

namespace Composer\Installer;

use Composer\Package\PackageInterface;
use Composer\Downloader\DownloadManager;
use Composer\Repository\InstalledRepositoryInterface;
use Composer\Util\Filesystem;

/**
 * Project Installer is used to install a single package into a directory as
 * root project.
 *
 * @author Benjamin Eberlei <kontakt@beberlei.de>
 */
class ProjectInstaller implements InstallerInterface
{
    /** @var string */
    private $installPath;
    /** @var DownloadManager */
    private $downloadManager;
    /** @var Filesystem */
    private $filesystem;

/**
     * @param string $installPath
     */
    public function __construct($installPath, DownloadManager $dm, Filesystem $fs)
    {
        $this->installPath = rtrim(strtr($installPath, '\\', '/'), '/').'/';
        $this->downloadManager = $dm;
        $this->filesystem = $fs;
    }

/**
     * Decides if the installer supports the given type
     *
     * @param  string $packageType
     * @return bool
     */
    public function supports($packageType)
    {
        return true;
    }

/**
     * @inheritDoc
     */
    public function isInstalled(InstalledRepositoryInterface $repo, PackageInterface $package)
    {
        return false;
    }

/**
     * @inheritDoc
     */
    public function download(PackageInterface $package, PackageInterface $prevPackage = null)
    {
        $installPath = $this->installPath;
        if (file_exists($installPath) && !$this->filesystem->isDirEmpty($installPath)) {
            throw new \InvalidArgumentException("Project directory $installPath is not empty.");
        }
        if (!is_dir($installPath)) {
            mkdir($installPath, 0777, true);
        }

return $this->downloadManager->download($package, $installPath, $prevPackage);
    }

/**
     * @inheritDoc
     */
    public function prepare($type, PackageInterface $package, PackageInterface $prevPackage = null)
    {
        return $this->downloadManager->prepare($type, $package, $this->installPath, $prevPackage);
    }

/**
     * @inheritDoc
     */
    public function cleanup($type, PackageInterface $package, PackageInterface $prevPackage = null)
    {
        return $this->downloadManager->cleanup($type, $package, $this->installPath, $prevPackage);
    }

/**
     * @inheritDoc
     */
    public function install(InstalledRepositoryInterface $repo, PackageInterface $package)
    {
        return $this->downloadManager->install($package, $this->installPath);
    }

/**
     * @inheritDoc
     */
    public function update(InstalledRepositoryInterface $repo, PackageInterface $initial, PackageInterface $target)
    {
        throw new \InvalidArgumentException("not supported");
    }

/**
     * @inheritDoc
     */
    public function uninstall(InstalledRepositoryInterface $repo, PackageInterface $package)
    {
        throw new \InvalidArgumentException("not supported");
    }

/**
     * Returns the installation path of a package
     *
     * @param  PackageInterface $package
     * @return string           path
     */
    public function getInstallPath(PackageInterface $package)
    {
        return $this->installPath;
    }
}
<?php

namespace Composer\Installer;

use Composer\Package\PackageInterface;

/**
 * Interface for the package installation manager that handle binary installation.
 *
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
interface BinaryPresenceInterface
{
    /**
     * Make sure binaries are installed for a given package.
     *
     * @param PackageInterface $package package instance
     *
     * @return void
     */
    public function ensureBinariesPresence(PackageInterface $package);
}
<?php

namespace Composer\Installer;

use Composer\IO\IOInterface;
use Composer\Package\PackageInterface;
use Composer\Pcre\Preg;
use Composer\Repository\InstalledRepository;
use Symfony\Component\Console\Formatter\OutputFormatter;

/**
 * Add suggested packages from different places to output them in the end.
 *
 * @author Haralan Dobrev <hkdobrev@gmail.com>
 */
class SuggestedPackagesReporter
{
    const MODE_LIST = 1;
    const MODE_BY_PACKAGE = 2;
    const MODE_BY_SUGGESTION = 4;

/**
     * @var array<array{source: string, target: string, reason: string}>
     */
    protected $suggestedPackages = array();

/**
     * @var IOInterface
     */
    private $io;

public function __construct(IOInterface $io)
    {
        $this->io = $io;
    }

/**
     * @return array<array{source: string, target: string, reason: string}> Suggested packages with source, target and reason keys.
     */
    public function getPackages()
    {
        return $this->suggestedPackages;
    }

/**
     * Add suggested packages to be listed after install
     *
     * Could be used to add suggested packages both from the installer
     * or from CreateProjectCommand.
     *
     * @param  string                    $source Source package which made the suggestion
     * @param  string                    $target Target package to be suggested
     * @param  string                    $reason Reason the target package to be suggested
     * @return SuggestedPackagesReporter
     */
    public function addPackage($source, $target, $reason)
    {
        $this->suggestedPackages[] = array(
            'source' => $source,
            'target' => $target,
            'reason' => $reason,
        );

return $this;
    }

/**
     * Add all suggestions from a package.
     *
     * @param  PackageInterface          $package
     * @return SuggestedPackagesReporter
     */
    public function addSuggestionsFromPackage(PackageInterface $package)
    {
        $source = $package->getPrettyName();
        foreach ($package->getSuggests() as $target => $reason) {
            $this->addPackage(
                $source,
                $target,
                $reason
            );
        }

return $this;
    }

/**
     * Output suggested packages.
     *
     * Do not list the ones already installed if installed repository provided.
     *
     * @param  int                      $mode             One of the MODE_* constants from this class
     * @param  InstalledRepository|null $installedRepo    If passed in, suggested packages which are installed already will be skipped
     * @param  PackageInterface|null    $onlyDependentsOf If passed in, only the suggestions from direct dependents of that package, or from the package itself, will be shown
     * @return void
     */
    public function output($mode, InstalledRepository $installedRepo = null, PackageInterface $onlyDependentsOf = null)
    {
        $suggestedPackages = $this->getFilteredSuggestions($installedRepo, $onlyDependentsOf);

$suggesters = array();
        $suggested = array();
        foreach ($suggestedPackages as $suggestion) {
            $suggesters[$suggestion['source']][$suggestion['target']] = $suggestion['reason'];
            $suggested[$suggestion['target']][$suggestion['source']] = $suggestion['reason'];
        }
        ksort($suggesters);
        ksort($suggested);

// Simple mode
        if ($mode & self::MODE_LIST) {
            foreach (array_keys($suggested) as $name) {
                $this->io->write(sprintf('<info>%s</info>', $name));
            }

return;
        }

// Grouped by package
        if ($mode & self::MODE_BY_PACKAGE) {
            foreach ($suggesters as $suggester => $suggestions) {
                $this->io->write(sprintf('<comment>%s</comment> suggests:', $suggester));

foreach ($suggestions as $suggestion => $reason) {
                    $this->io->write(sprintf(' - <info>%s</info>' . ($reason ? ': %s' : ''), $suggestion, $this->escapeOutput($reason)));
                }
                $this->io->write('');
            }
        }

// Grouped by suggestion
        if ($mode & self::MODE_BY_SUGGESTION) {
            // Improve readability in full mode
            if ($mode & self::MODE_BY_PACKAGE) {
                $this->io->write(str_repeat('-', 78));
            }
            foreach ($suggested as $suggestion => $suggesters) {
                $this->io->write(sprintf('<comment>%s</comment> is suggested by:', $suggestion));

foreach ($suggesters as $suggester => $reason) {
                    $this->io->write(sprintf(' - <info>%s</info>' . ($reason ? ': %s' : ''), $suggester, $this->escapeOutput($reason)));
                }
                $this->io->write('');
            }
        }

if ($onlyDependentsOf) {
            $allSuggestedPackages = $this->getFilteredSuggestions($installedRepo);
            $diff = count($allSuggestedPackages) - count($suggestedPackages);
            if ($diff) {
                $this->io->write('<info>'.$diff.' additional suggestions</info> by transitive dependencies can be shown with <info>--all</info>');
            }
        }
    }

/**
     * Output number of new suggested packages and a hint to use suggest command.
     *
     * @param  InstalledRepository|null $installedRepo    If passed in, suggested packages which are installed already will be skipped
     * @param  PackageInterface|null    $onlyDependentsOf If passed in, only the suggestions from direct dependents of that package, or from the package itself, will be shown
     * @return void
     */
    public function outputMinimalistic(InstalledRepository $installedRepo = null, PackageInterface $onlyDependentsOf = null)
    {
        $suggestedPackages = $this->getFilteredSuggestions($installedRepo, $onlyDependentsOf);
        if ($suggestedPackages) {
            $this->io->writeError('<info>'.count($suggestedPackages).' package suggestions were added by new dependencies, use `composer suggest` to see details.</info>');
        }
    }

/**
     * @param  InstalledRepository|null $installedRepo    If passed in, suggested packages which are installed already will be skipped
     * @param  PackageInterface|null    $onlyDependentsOf If passed in, only the suggestions from direct dependents of that package, or from the package itself, will be shown
     * @return mixed[]
     */
    private function getFilteredSuggestions(InstalledRepository $installedRepo = null, PackageInterface $onlyDependentsOf = null)
    {
        $suggestedPackages = $this->getPackages();
        $installedNames = array();
        if (null !== $installedRepo && !empty($suggestedPackages)) {
            foreach ($installedRepo->getPackages() as $package) {
                $installedNames = array_merge(
                    $installedNames,
                    $package->getNames()
                );
            }
        }

$sourceFilter = array();
        if ($onlyDependentsOf) {
            $sourceFilter = array_map(function ($link) {
                return $link->getTarget();
            }, array_merge($onlyDependentsOf->getRequires(), $onlyDependentsOf->getDevRequires()));
            $sourceFilter[] = $onlyDependentsOf->getName();
        }

$suggestions = array();
        foreach ($suggestedPackages as $suggestion) {
            if (in_array($suggestion['target'], $installedNames) || ($sourceFilter && !in_array($suggestion['source'], $sourceFilter))) {
                continue;
            }

$suggestions[] = $suggestion;
        }

return $suggestions;
    }

/**
     * @param  string $string
     * @return string
     */
    private function escapeOutput($string)
    {
        return OutputFormatter::escape(
            $this->removeControlCharacters($string)
        );
    }

/**
     * @param  string $string
     * @return string
     */
    private function removeControlCharacters($string)
    {
        return Preg::replace(
            '/[[:cntrl:]]/',
            '',
            str_replace("\n", ' ', $string)
        );
    }
}
<?php

namespace Composer\Installer;

use Composer\IO\IOInterface;
use Composer\IO\ConsoleIO;
use Composer\Package\PackageInterface;
use Composer\Package\AliasPackage;
use Composer\Repository\InstalledRepositoryInterface;
use Composer\DependencyResolver\Operation\OperationInterface;
use Composer\DependencyResolver\Operation\InstallOperation;
use Composer\DependencyResolver\Operation\UpdateOperation;
use Composer\DependencyResolver\Operation\UninstallOperation;
use Composer\DependencyResolver\Operation\MarkAliasInstalledOperation;
use Composer\DependencyResolver\Operation\MarkAliasUninstalledOperation;
use Composer\Downloader\FileDownloader;
use Composer\EventDispatcher\EventDispatcher;
use Composer\Util\Loop;
use Composer\Util\Platform;
use React\Promise\PromiseInterface;

/**
 * Package operation manager.
 *
 * @author Konstantin Kudryashov <ever.zet@gmail.com>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 * @author Nils Adermann <naderman@naderman.de>
 */
class InstallationManager
{
    /** @var array<InstallerInterface> */
    private $installers = array();
    /** @var array<string, InstallerInterface> */
    private $cache = array();
    /** @var array<string, array<PackageInterface>> */
    private $notifiablePackages = array();
    /** @var Loop */
    private $loop;
    /** @var IOInterface */
    private $io;
    /** @var ?EventDispatcher */
    private $eventDispatcher;
    /** @var bool */
    private $outputProgress;

public function __construct(Loop $loop, IOInterface $io, EventDispatcher $eventDispatcher = null)
    {
        $this->loop = $loop;
        $this->io = $io;
        $this->eventDispatcher = $eventDispatcher;
    }

/**
     * @return void
     */
    public function reset()
    {
        $this->notifiablePackages = array();
        FileDownloader::$downloadMetadata = array();
    }

/**
     * Adds installer
     *
     * @param InstallerInterface $installer installer instance
     *
     * @return void
     */
    public function addInstaller(InstallerInterface $installer)
    {
        array_unshift($this->installers, $installer);
        $this->cache = array();
    }

/**
     * Removes installer
     *
     * @param InstallerInterface $installer installer instance
     *
     * @return void
     */
    public function removeInstaller(InstallerInterface $installer)
    {
        if (false !== ($key = array_search($installer, $this->installers, true))) {
            array_splice($this->installers, $key, 1);
            $this->cache = array();
        }
    }

/**
     * Disables plugins.
     *
     * We prevent any plugins from being instantiated by simply
     * deactivating the installer for them. This ensure that no third-party
     * code is ever executed.
     *
     * @return void
     */
    public function disablePlugins()
    {
        foreach ($this->installers as $i => $installer) {
            if (!$installer instanceof PluginInstaller) {
                continue;
            }

unset($this->installers[$i]);
        }
    }

/**
     * Returns installer for a specific package type.
     *
     * @param string $type package type
     *
     * @throws \InvalidArgumentException if installer for provided type is not registered
     * @return InstallerInterface
     */
    public function getInstaller($type)
    {
        $type = strtolower($type);

if (isset($this->cache[$type])) {
            return $this->cache[$type];
        }

foreach ($this->installers as $installer) {
            if ($installer->supports($type)) {
                return $this->cache[$type] = $installer;
            }
        }

throw new \InvalidArgumentException('Unknown installer type: '.$type);
    }

/**
     * Checks whether provided package is installed in one of the registered installers.
     *
     * @param InstalledRepositoryInterface $repo    repository in which to check
     * @param PackageInterface             $package package instance
     *
     * @return bool
     */
    public function isPackageInstalled(InstalledRepositoryInterface $repo, PackageInterface $package)
    {
        if ($package instanceof AliasPackage) {
            return $repo->hasPackage($package) && $this->isPackageInstalled($repo, $package->getAliasOf());
        }

return $this->getInstaller($package->getType())->isInstalled($repo, $package);
    }

/**
     * Install binary for the given package.
     * If the installer associated to this package doesn't handle that function, it'll do nothing.
     *
     * @param PackageInterface $package Package instance
     *
     * @return void
     */
    public function ensureBinariesPresence(PackageInterface $package)
    {
        try {
            $installer = $this->getInstaller($package->getType());
        } catch (\InvalidArgumentException $e) {
            // no installer found for the current package type (@see `getInstaller()`)
            return;
        }

// if the given installer support installing binaries
        if ($installer instanceof BinaryPresenceInterface) {
            $installer->ensureBinariesPresence($package);
        }
    }

/**
     * Executes solver operation.
     *
     * @param InstalledRepositoryInterface $repo       repository in which to add/remove/update packages
     * @param OperationInterface[]         $operations operations to execute
     * @param bool                         $devMode    whether the install is being run in dev mode
     * @param bool                         $runScripts whether to dispatch script events
     *
     * @return void
     */
    public function execute(InstalledRepositoryInterface $repo, array $operations, $devMode = true, $runScripts = true)
    {
        /** @var PromiseInterface[] */
        $cleanupPromises = array();

$loop = $this->loop;
        $io = $this->io;
        $runCleanup = function () use (&$cleanupPromises, $loop) {
            $promises = array();

$loop->abortJobs();

foreach ($cleanupPromises as $cleanup) {
                $promises[] = new \React\Promise\Promise(function ($resolve, $reject) use ($cleanup) {
                    $promise = $cleanup();
                    if (!$promise instanceof PromiseInterface) {
                        $resolve();
                    } else {
                        $promise->then(function () use ($resolve) {
                            $resolve();
                        });
                    }
                });
            }

if (!empty($promises)) {
                $loop->wait($promises);
            }
        };

$handleInterruptsUnix = function_exists('pcntl_async_signals') && function_exists('pcntl_signal');
        $handleInterruptsWindows = function_exists('sapi_windows_set_ctrl_handler') && PHP_SAPI === 'cli';
        $prevHandler = null;
        $windowsHandler = null;
        if ($handleInterruptsUnix) {
            pcntl_async_signals(true);
            $prevHandler = pcntl_signal_get_handler(SIGINT);
            pcntl_signal(SIGINT, function ($sig) use ($runCleanup, $prevHandler, $io) {
                $io->writeError('Received SIGINT, aborting', true, IOInterface::DEBUG);
                $runCleanup();

if (!in_array($prevHandler, array(SIG_DFL, SIG_IGN), true)) {
                    call_user_func($prevHandler, $sig);
                }

exit(130);
            });
        }
        if ($handleInterruptsWindows) {
            $windowsHandler = function ($event) use ($runCleanup, $io) {
                if ($event !== PHP_WINDOWS_EVENT_CTRL_C) {
                    return;
                }
                $io->writeError('Received CTRL+C, aborting', true, IOInterface::DEBUG);
                $runCleanup();

exit(130);
            };
            sapi_windows_set_ctrl_handler($windowsHandler);
        }

try {
            // execute operations in batches to make sure download-modifying-plugins are installed
            // before the other packages get downloaded
            $batches = array();
            $batch = array();
            foreach ($operations as $index => $operation) {
                if ($operation instanceof UpdateOperation || $operation instanceof InstallOperation) {
                    $package = $operation instanceof UpdateOperation ? $operation->getTargetPackage() : $operation->getPackage();
                    if ($package->getType() === 'composer-plugin' && ($extra = $package->getExtra()) && isset($extra['plugin-modifies-downloads']) && $extra['plugin-modifies-downloads'] === true) {
                        if ($batch) {
                            $batches[] = $batch;
                        }
                        $batches[] = array($index => $operation);
                        $batch = array();

continue;
                    }
                }
                $batch[$index] = $operation;
            }

if ($batch) {
                $batches[] = $batch;
            }

foreach ($batches as $batch) {
                $this->downloadAndExecuteBatch($repo, $batch, $cleanupPromises, $devMode, $runScripts, $operations);
            }
        } catch (\Exception $e) {
            $runCleanup();

if ($handleInterruptsUnix) {
                pcntl_signal(SIGINT, $prevHandler);
            }
            if ($handleInterruptsWindows) {
                sapi_windows_set_ctrl_handler($windowsHandler, false);
            }

throw $e;
        }

if ($handleInterruptsUnix) {
            pcntl_signal(SIGINT, $prevHandler);
        }
        if ($handleInterruptsWindows) {
            sapi_windows_set_ctrl_handler($windowsHandler, false);
        }

// do a last write so that we write the repository even if nothing changed
        // as that can trigger an update of some files like InstalledVersions.php if
        // running a new composer version
        $repo->write($devMode, $this);
    }

/**
     * @param OperationInterface[] $operations    List of operations to execute in this batch
     * @param PromiseInterface[] $cleanupPromises
     * @param bool $devMode
     * @param bool $runScripts
     * @param OperationInterface[] $allOperations Complete list of operations to be executed in the install job, used for event listeners
     *
     * @return void
     */
    private function downloadAndExecuteBatch(InstalledRepositoryInterface $repo, array $operations, array &$cleanupPromises, $devMode, $runScripts, array $allOperations)
    {
        $promises = array();

foreach ($operations as $index => $operation) {
            $opType = $operation->getOperationType();

// ignoring alias ops as they don't need to execute anything at this stage
            if (!in_array($opType, array('update', 'install', 'uninstall'))) {
                continue;
            }

if ($opType === 'update') {
                /** @var UpdateOperation $operation */
                $package = $operation->getTargetPackage();
                $initialPackage = $operation->getInitialPackage();
            } else {
                /** @var InstallOperation|MarkAliasInstalledOperation|MarkAliasUninstalledOperation|UninstallOperation $operation */
                $package = $operation->getPackage();
                $initialPackage = null;
            }
            $installer = $this->getInstaller($package->getType());

$cleanupPromises[$index] = function () use ($opType, $installer, $package, $initialPackage) {
                // avoid calling cleanup if the download was not even initialized for a package
                // as without installation source configured nothing will work
                if (!$package->getInstallationSource()) {
                    return;
                }

return $installer->cleanup($opType, $package, $initialPackage);
            };

if ($opType !== 'uninstall') {
                $promise = $installer->download($package, $initialPackage);
                if ($promise) {
                    $promises[] = $promise;
                }
            }
        }

// execute all downloads first
        if (count($promises)) {
            $this->waitOnPromises($promises);
        }

// execute operations in batches to make sure every plugin is installed in the
        // right order and activated before the packages depending on it are installed
        $batches = array();
        $batch = array();
        foreach ($operations as $index => $operation) {
            if ($operation instanceof InstallOperation || $operation instanceof UpdateOperation) {
                $package = $operation instanceof UpdateOperation ? $operation->getTargetPackage() : $operation->getPackage();
                if ($package->getType() === 'composer-plugin' || $package->getType() === 'composer-installer') {
                    if ($batch) {
                        $batches[] = $batch;
                    }
                    $batches[] = array($index => $operation);
                    $batch = array();

continue;
                }
            }
            $batch[$index] = $operation;
        }

if ($batch) {
            $batches[] = $batch;
        }

foreach ($batches as $batch) {
            $this->executeBatch($repo, $batch, $cleanupPromises, $devMode, $runScripts, $allOperations);
        }
    }

/**
     * @param OperationInterface[] $operations    List of operations to execute in this batch
     * @param PromiseInterface[] $cleanupPromises
     * @param bool $devMode
     * @param bool $runScripts
     * @param OperationInterface[] $allOperations Complete list of operations to be executed in the install job, used for event listeners
     *
     * @return void
     */
    private function executeBatch(InstalledRepositoryInterface $repo, array $operations, array $cleanupPromises, $devMode, $runScripts, array $allOperations)
    {
        $promises = array();
        $postExecCallbacks = array();

foreach ($operations as $index => $operation) {
            $opType = $operation->getOperationType();

// ignoring alias ops as they don't need to execute anything
            if (!in_array($opType, array('update', 'install', 'uninstall'))) {
                // output alias ops in debug verbosity as they have no output otherwise
                if ($this->io->isDebug()) {
                    $this->io->writeError('  - ' . $operation->show(false));
                }
                $this->$opType($repo, $operation);

continue;
            }

$event = 'Composer\Installer\PackageEvents::PRE_PACKAGE_'.strtoupper($opType);
            if (defined($event) && $runScripts && $this->eventDispatcher) {
                $this->eventDispatcher->dispatchPackageEvent(constant($event), $devMode, $repo, $allOperations, $operation);
            }

$dispatcher = $this->eventDispatcher;
            $installManager = $this;
            $io = $this->io;

$promise = $installer->prepare($opType, $package, $initialPackage);
            if (!$promise instanceof PromiseInterface) {
                $promise = \React\Promise\resolve();
            }

$promise = $promise->then(function () use ($opType, $installManager, $repo, $operation) {
                return $installManager->$opType($repo, $operation);
            })->then($cleanupPromises[$index])
            ->then(function () use ($installManager, $devMode, $repo) {
                $repo->write($devMode, $installManager);
            }, function ($e) use ($opType, $package, $io) {
                $io->writeError('    <error>' . ucfirst($opType) .' of '.$package->getPrettyName().' failed</error>');

throw $e;
            });

$postExecCallbacks[] = function () use ($opType, $runScripts, $dispatcher, $devMode, $repo, $allOperations, $operation) {
                $event = 'Composer\Installer\PackageEvents::POST_PACKAGE_'.strtoupper($opType);
                if (defined($event) && $runScripts && $dispatcher) {
                    $dispatcher->dispatchPackageEvent(constant($event), $devMode, $repo, $allOperations, $operation);
                }
            };

$promises[] = $promise;
        }

// execute all prepare => installs/updates/removes => cleanup steps
        if (count($promises)) {
            $this->waitOnPromises($promises);
        }

Platform::workaroundFilesystemIssues();

foreach ($postExecCallbacks as $cb) {
            $cb();
        }
    }

/**
     * @param PromiseInterface[] $promises
     *
     * @return void
     */
    private function waitOnPromises(array $promises)
    {
        $progress = null;
        if (
            $this->outputProgress
            && $this->io instanceof ConsoleIO
            && !Platform::getEnv('CI')
            && !$this->io->isDebug()
            && count($promises) > 1
        ) {
            $progress = $this->io->getProgressBar();
        }
        $this->loop->wait($promises, $progress);
        if ($progress) {
            $progress->clear();
            // ProgressBar in non-decorated output does not output a final line-break and clear() does nothing
            if (!$this->io->isDecorated()) {
                $this->io->writeError('');
            }
        }
    }

/**
     * Executes install operation.
     *
     * @param InstalledRepositoryInterface $repo      repository in which to check
     * @param InstallOperation             $operation operation instance
     *
     * @return PromiseInterface|null
     */
    public function install(InstalledRepositoryInterface $repo, InstallOperation $operation)
    {
        $package = $operation->getPackage();
        $installer = $this->getInstaller($package->getType());
        $promise = $installer->install($repo, $package);
        $this->markForNotification($package);

return $promise;
    }

/**
     * Executes update operation.
     *
     * @param InstalledRepositoryInterface $repo      repository in which to check
     * @param UpdateOperation              $operation operation instance
     *
     * @return PromiseInterface|null
     */
    public function update(InstalledRepositoryInterface $repo, UpdateOperation $operation)
    {
        $initial = $operation->getInitialPackage();
        $target = $operation->getTargetPackage();

$initialType = $initial->getType();
        $targetType = $target->getType();

if ($initialType === $targetType) {
            $installer = $this->getInstaller($initialType);
            $promise = $installer->update($repo, $initial, $target);
            $this->markForNotification($target);
        } else {
            $promise = $this->getInstaller($initialType)->uninstall($repo, $initial);
            if (!$promise instanceof PromiseInterface) {
                $promise = \React\Promise\resolve();
            }

$installer = $this->getInstaller($targetType);
            $promise = $promise->then(function () use ($installer, $repo, $target) {
                return $installer->install($repo, $target);
            });
        }

return $promise;
    }

/**
     * Uninstalls package.
     *
     * @param InstalledRepositoryInterface $repo      repository in which to check
     * @param UninstallOperation           $operation operation instance
     *
     * @return PromiseInterface|null
     */
    public function uninstall(InstalledRepositoryInterface $repo, UninstallOperation $operation)
    {
        $package = $operation->getPackage();
        $installer = $this->getInstaller($package->getType());

return $installer->uninstall($repo, $package);
    }

/**
     * Executes markAliasInstalled operation.
     *
     * @param InstalledRepositoryInterface $repo      repository in which to check
     * @param MarkAliasInstalledOperation  $operation operation instance
     *
     * @return void
     */
    public function markAliasInstalled(InstalledRepositoryInterface $repo, MarkAliasInstalledOperation $operation)
    {
        $package = $operation->getPackage();

if (!$repo->hasPackage($package)) {
            $repo->addPackage(clone $package);
        }
    }

/**
     * Executes markAlias operation.
     *
     * @param InstalledRepositoryInterface  $repo      repository in which to check
     * @param MarkAliasUninstalledOperation $operation operation instance
     *
     * @return void
     */
    public function markAliasUninstalled(InstalledRepositoryInterface $repo, MarkAliasUninstalledOperation $operation)
    {
        $package = $operation->getPackage();

$repo->removePackage($package);
    }

/**
     * Returns the installation path of a package
     *
     * @param  PackageInterface $package
     * @return string           path
     */
    public function getInstallPath(PackageInterface $package)
    {
        $installer = $this->getInstaller($package->getType());

return $installer->getInstallPath($package);
    }

/**
     * @param bool $outputProgress
     *
     * @return void
     */
    public function setOutputProgress($outputProgress)
    {
        $this->outputProgress = $outputProgress;
    }

/**
     * @return void
     */
    public function notifyInstalls(IOInterface $io)
    {
        $promises = array();

try {
            foreach ($this->notifiablePackages as $repoUrl => $packages) {
                // non-batch API, deprecated
                if (strpos($repoUrl, '%package%')) {
                    foreach ($packages as $package) {
                        $url = str_replace('%package%', $package->getPrettyName(), $repoUrl);

$params = array(
                            'version' => $package->getPrettyVersion(),
                            'version_normalized' => $package->getVersion(),
                        );
                        $opts = array(
                            'retry-auth-failure' => false,
                            'http' => array(
                                'method' => 'POST',
                                'header' => array('Content-type: application/x-www-form-urlencoded'),
                                'content' => http_build_query($params, '', '&'),
                                'timeout' => 3,
                            ),
                        );

$promises[] = $this->loop->getHttpDownloader()->add($url, $opts);
                    }

continue;
                }

$postData = array('downloads' => array());
                foreach ($packages as $package) {
                    $packageNotification = array(
                        'name' => $package->getPrettyName(),
                        'version' => $package->getVersion(),
                    );
                    if (strpos($repoUrl, 'packagist.org/') !== false) {
                        if (isset(FileDownloader::$downloadMetadata[$package->getName()])) {
                            $packageNotification['downloaded'] = FileDownloader::$downloadMetadata[$package->getName()];
                        } else {
                            $packageNotification['downloaded'] = false;
                        }
                    }
                    $postData['downloads'][] = $packageNotification;
                }

$opts = array(
                    'retry-auth-failure' => false,
                    'http' => array(
                        'method' => 'POST',
                        'header' => array('Content-Type: application/json'),
                        'content' => json_encode($postData),
                        'timeout' => 6,
                    ),
                );

$promises[] = $this->loop->getHttpDownloader()->add($repoUrl, $opts);
            }

$this->loop->wait($promises);
        } catch (\Exception $e) {
        }

$this->reset();
    }

/**
     * @return void
     */
    private function markForNotification(PackageInterface $package)
    {
        if ($package->getNotificationUrl()) {
            $this->notifiablePackages[$package->getNotificationUrl()][$package->getName()] = $package;
        }
    }
}
<?php

namespace Composer\Installer;

class InstallerEvents
{
    /**
     * The PRE_OPERATIONS_EXEC event occurs before the lock file gets
     * installed and operations are executed.
     *
     * The event listener method receives an Composer\Installer\InstallerEvent instance.
     *
     * @var string
     */
    const PRE_OPERATIONS_EXEC = 'pre-operations-exec';
}
<?php

namespace Composer\Installer;

/**
 * Package Events.
 *
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class PackageEvents
{
    /**
     * The PRE_PACKAGE_INSTALL event occurs before a package is installed.
     *
     * The event listener method receives a Composer\Installer\PackageEvent instance.
     *
     * @var string
     */
    const PRE_PACKAGE_INSTALL = 'pre-package-install';

/**
     * The POST_PACKAGE_INSTALL event occurs after a package is installed.
     *
     * The event listener method receives a Composer\Installer\PackageEvent instance.
     *
     * @var string
     */
    const POST_PACKAGE_INSTALL = 'post-package-install';

/**
     * The PRE_PACKAGE_UPDATE event occurs before a package is updated.
     *
     * The event listener method receives a Composer\Installer\PackageEvent instance.
     *
     * @var string
     */
    const PRE_PACKAGE_UPDATE = 'pre-package-update';

/**
     * The POST_PACKAGE_UPDATE event occurs after a package is updated.
     *
     * The event listener method receives a Composer\Installer\PackageEvent instance.
     *
     * @var string
     */
    const POST_PACKAGE_UPDATE = 'post-package-update';

/**
     * The PRE_PACKAGE_UNINSTALL event occurs before a package has been uninstalled.
     *
     * The event listener method receives a Composer\Installer\PackageEvent instance.
     *
     * @var string
     */
    const PRE_PACKAGE_UNINSTALL = 'pre-package-uninstall';

/**
     * The POST_PACKAGE_UNINSTALL event occurs after a package has been uninstalled.
     *
     * The event listener method receives a Composer\Installer\PackageEvent instance.
     *
     * @var string
     */
    const POST_PACKAGE_UNINSTALL = 'post-package-uninstall';
}
<?php

namespace Composer\SelfUpdate;

use Composer\Util\HttpDownloader;
use Composer\Config;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class Versions
{
    /** @var string[] */
    public static $channels = array('stable', 'preview', 'snapshot', '1', '2');

/** @var HttpDownloader */
    private $httpDownloader;
    /** @var Config */
    private $config;
    /** @var string */
    private $channel;
    /** @var array<string, array<int, array{path: string, version: string, min-php: int}>> */
    private $versionsData;

public function __construct(Config $config, HttpDownloader $httpDownloader)
    {
        $this->httpDownloader = $httpDownloader;
        $this->config = $config;
    }

/**
     * @return string
     */
    public function getChannel()
    {
        if ($this->channel) {
            return $this->channel;
        }

$channelFile = $this->config->get('home').'/update-channel';
        if (file_exists($channelFile)) {
            $channel = trim(file_get_contents($channelFile));
            if (in_array($channel, array('stable', 'preview', 'snapshot'), true)) {
                return $this->channel = $channel;
            }
        }

return $this->channel = 'stable';
    }

/**
     * @param string $channel
     *
     * @return void
     */
    public function setChannel($channel)
    {
        if (!in_array($channel, self::$channels, true)) {
            throw new \InvalidArgumentException('Invalid channel '.$channel.', must be one of: ' . implode(', ', self::$channels));
        }

$channelFile = $this->config->get('home').'/update-channel';
        $this->channel = $channel;
        file_put_contents($channelFile, (is_numeric($channel) ? 'stable' : $channel).PHP_EOL);
    }

/**
     * @param string|null $channel
     *
     * @return array{path: string, version: string, min-php: int}
     */
    public function getLatest($channel = null)
    {
        $versions = $this->getVersionsData();

foreach ($versions[$channel ?: $this->getChannel()] as $version) {
            if ($version['min-php'] <= PHP_VERSION_ID) {
                return $version;
            }
        }

throw new \UnexpectedValueException('There is no version of Composer available for your PHP version ('.PHP_VERSION.')');
    }

/**
     * @return array<string, array<int, array{path: string, version: string, min-php: int}>>
     */
    private function getVersionsData()
    {
        if (!$this->versionsData) {
            if ($this->config->get('disable-tls') === true) {
                $protocol = 'http';
            } else {
                $protocol = 'https';
            }

$this->versionsData = $this->httpDownloader->get($protocol . '://getcomposer.org/versions')->decodeJson();
        }

return $this->versionsData;
    }
}
<?php

namespace Composer\SelfUpdate;

use Composer\Pcre\Preg;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class Keys
{
    /**
     * @param string $path
     *
     * @return string
     */
    public static function fingerprint($path)
    {
        $hash = strtoupper(hash('sha256', Preg::replace('{\s}', '', file_get_contents($path))));

return implode(' ', array(
            substr($hash, 0, 8),
            substr($hash, 8, 8),
            substr($hash, 16, 8),
            substr($hash, 24, 8),
            '', // Extra space
            substr($hash, 32, 8),
            substr($hash, 40, 8),
            substr($hash, 48, 8),
            substr($hash, 56, 8),
        ));
    }
}
<?php

namespace Composer\Filter\PlatformRequirementFilter;

use Composer\Package\BasePackage;
use Composer\Pcre\Preg;
use Composer\Repository\PlatformRepository;
use Composer\Semver\Constraint\Constraint;
use Composer\Semver\Constraint\ConstraintInterface;
use Composer\Semver\Constraint\MatchAllConstraint;
use Composer\Semver\Constraint\MultiConstraint;
use Composer\Semver\Interval;
use Composer\Semver\Intervals;

final class IgnoreListPlatformRequirementFilter implements PlatformRequirementFilterInterface
{
    /**
     * @var string
     */
    private $ignoreRegex;

/**
     * @var string
     */
    private $ignoreUpperBoundRegex;

/**
     * @param string[] $reqList
     */
    public function __construct(array $reqList)
    {
        $ignoreAll = $ignoreUpperBound = array();
        foreach ($reqList as $req) {
            if (substr($req, -1) === '+') {
                $ignoreUpperBound[] = substr($req, 0, -1);
            } else {
                $ignoreAll[] = $req;
            }
        }
        $this->ignoreRegex = BasePackage::packageNamesToRegexp($ignoreAll);
        $this->ignoreUpperBoundRegex = BasePackage::packageNamesToRegexp($ignoreUpperBound);
    }

/**
     * @param string $req
     * @return bool
     */
    public function isIgnored($req)
    {
        if (!PlatformRepository::isPlatformPackage($req)) {
            return false;
        }

return Preg::isMatch($this->ignoreRegex, $req);
    }

/**
     * @param string $req
     * @return ConstraintInterface
     */
    public function filterConstraint($req, ConstraintInterface $constraint)
    {
        if (!PlatformRepository::isPlatformPackage($req)) {
            return $constraint;
        }

if (!Preg::isMatch($this->ignoreUpperBoundRegex, $req)) {
            return $constraint;
        }

if (Preg::isMatch($this->ignoreRegex, $req)) {
            return new MatchAllConstraint;
        }

$intervals = Intervals::get($constraint);
        $last = end($intervals['numeric']);
        if ($last !== false && (string) $last->getEnd() !== (string) Interval::untilPositiveInfinity()) {
            $constraint = new MultiConstraint(array($constraint, new Constraint('>=', $last->getEnd()->getVersion())), false);
        }

return $constraint;
    }
}
<?php

namespace Composer\Filter\PlatformRequirementFilter;

final class PlatformRequirementFilterFactory
{
    /**
     * @param mixed $boolOrList
     *
     * @return PlatformRequirementFilterInterface
     */
    public static function fromBoolOrList($boolOrList)
    {
        if (is_bool($boolOrList)) {
            return $boolOrList ? self::ignoreAll() : self::ignoreNothing();
        }

if (is_array($boolOrList)) {
            return new IgnoreListPlatformRequirementFilter($boolOrList);
        }

throw new \InvalidArgumentException(
            sprintf(
                'PlatformRequirementFilter: Unknown $boolOrList parameter %s. Please report at https://github.com/composer/composer/issues/new.',
                gettype($boolOrList)
            )
        );
    }

/**
     * @return PlatformRequirementFilterInterface
     */
    public static function ignoreAll()
    {
        return new IgnoreAllPlatformRequirementFilter();
    }

/**
     * @return PlatformRequirementFilterInterface
     */
    public static function ignoreNothing()
    {
        return new IgnoreNothingPlatformRequirementFilter();
    }
}
<?php

namespace Composer\Filter\PlatformRequirementFilter;

interface PlatformRequirementFilterInterface
{
    /**
     * @param string $req
     * @return bool
     */
    public function isIgnored($req);
}
<?php

namespace Composer\Filter\PlatformRequirementFilter;

final class IgnoreNothingPlatformRequirementFilter implements PlatformRequirementFilterInterface
{
    /**
     * @param string $req
     * @return false
     */
    public function isIgnored($req)
    {
        return false;
    }
}
<?php

namespace Composer\Filter\PlatformRequirementFilter;

use Composer\Repository\PlatformRepository;

final class IgnoreAllPlatformRequirementFilter implements PlatformRequirementFilterInterface
{
    /**
     * @param string $req
     * @return bool
     */
    public function isIgnored($req)
    {
        return PlatformRepository::isPlatformPackage($req);
    }
}
<?php

namespace Composer\EventDispatcher;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class ScriptExecutionException extends \RuntimeException
{
}
<?php

namespace Composer\EventDispatcher;

/**
 * The base event class
 *
 * @author Nils Adermann <naderman@naderman.de>
 */
class Event
{
    /**
     * @var string This event's name
     */
    protected $name;

/**
     * @var string[] Arguments passed by the user, these will be forwarded to CLI script handlers
     */
    protected $args;

/**
     * @var mixed[] Flags usable in PHP script handlers
     */
    protected $flags;

/**
     * @var bool Whether the event should not be passed to more listeners
     */
    private $propagationStopped = false;

/**
     * Constructor.
     *
     * @param string   $name  The event name
     * @param string[] $args  Arguments passed by the user
     * @param mixed[]  $flags Optional flags to pass data not as argument
     */
    public function __construct($name, array $args = array(), array $flags = array())
    {
        $this->name = $name;
        $this->args = $args;
        $this->flags = $flags;
    }

/**
     * Returns the event's name.
     *
     * @return string The event name
     */
    public function getName()
    {
        return $this->name;
    }

/**
     * Returns the event's arguments.
     *
     * @return string[] The event arguments
     */
    public function getArguments()
    {
        return $this->args;
    }

/**
     * Returns the event's flags.
     *
     * @return mixed[] The event flags
     */
    public function getFlags()
    {
        return $this->flags;
    }

/**
     * Checks if stopPropagation has been called
     *
     * @return bool Whether propagation has been stopped
     */
    public function isPropagationStopped()
    {
        return $this->propagationStopped;
    }

/**
     * Prevents the event from being passed to further listeners
     *
     * @return void
     */
    public function stopPropagation()
    {
        $this->propagationStopped = true;
    }
}
<?php

namespace Composer\EventDispatcher;

/**
 * An EventSubscriber knows which events it is interested in.
 *
 * If an EventSubscriber is added to an EventDispatcher, the manager invokes
 * {@link getSubscribedEvents} and registers the subscriber as a listener for all
 * returned events.
 *
 * @author Guilherme Blanco <guilhermeblanco@hotmail.com>
 * @author Jonathan Wage <jonwage@gmail.com>
 * @author Roman Borschel <roman@code-factory.org>
 * @author Bernhard Schussek <bschussek@gmail.com>
 */
interface EventSubscriberInterface
{
    /**
     * Returns an array of event names this subscriber wants to listen to.
     *
     * The array keys are event names and the value can be:
     *
     * * The method name to call (priority defaults to 0)
     * * An array composed of the method name to call and the priority
     * * An array of arrays composed of the method names to call and respective
     *   priorities, or 0 if unset
     *
     * For instance:
     *
     * * array('eventName' => 'methodName')
     * * array('eventName' => array('methodName', $priority))
     * * array('eventName' => array(array('methodName1', $priority), array('methodName2'))
     *
     * @return array<string, string|array{0: string, 1?: int}|array<array{0: string, 1?: int}>> The event names to listen to
     */
    public static function getSubscribedEvents();
}
<?php

namespace Composer\EventDispatcher;

use Composer\DependencyResolver\Transaction;
use Composer\Installer\InstallerEvent;
use Composer\IO\IOInterface;
use Composer\Composer;
use Composer\Pcre\Preg;
use Composer\Util\Platform;
use Composer\DependencyResolver\Operation\OperationInterface;
use Composer\Repository\RepositoryInterface;
use Composer\Script;
use Composer\Installer\PackageEvent;
use Composer\Installer\BinaryInstaller;
use Composer\Util\ProcessExecutor;
use Composer\Script\Event as ScriptEvent;
use Composer\Autoload\ClassLoader;
use Symfony\Component\Process\PhpExecutableFinder;
use Symfony\Component\Process\ExecutableFinder;

/**
 * The Event Dispatcher.
 *
 * Example in command:
 *     $dispatcher = new EventDispatcher($this->getComposer(), $this->getApplication()->getIO());
 *     // ...
 *     $dispatcher->dispatch(ScriptEvents::POST_INSTALL_CMD);
 *     // ...
 *
 * @author François Pluchino <francois.pluchino@opendisplay.com>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 * @author Nils Adermann <naderman@naderman.de>
 */
class EventDispatcher
{
    /** @var Composer */
    protected $composer;
    /** @var IOInterface */
    protected $io;
    /** @var ?ClassLoader */
    protected $loader;
    /** @var ProcessExecutor */
    protected $process;
    /** @var array<string, array<int, array<callable|string>>> */
    protected $listeners = array();
    /** @var bool */
    protected $runScripts = true;
    /** @var list<string> */
    private $eventStack;

/**
     * Constructor.
     *
     * @param Composer        $composer The composer instance
     * @param IOInterface     $io       The IOInterface instance
     * @param ProcessExecutor $process
     */
    public function __construct(Composer $composer, IOInterface $io, ProcessExecutor $process = null)
    {
        $this->composer = $composer;
        $this->io = $io;
        $this->process = $process ?: new ProcessExecutor($io);
        $this->eventStack = array();
    }

/**
     * Set whether script handlers are active or not
     *
     * @param bool $runScripts
     * @return $this
     */
    public function setRunScripts($runScripts = true)
    {
        $this->runScripts = (bool) $runScripts;

return $this;
    }

/**
     * Dispatch an event
     *
     * @param  string $eventName An event name
     * @param  Event  $event
     * @return int    return code of the executed script if any, for php scripts a false return
     *                          value is changed to 1, anything else to 0
     */
    public function dispatch($eventName, Event $event = null)
    {
        if (null === $event) {
            $event = new Event($eventName);
        }

return $this->doDispatch($event);
    }

/**
     * Dispatch a script event.
     *
     * @param  string               $eventName      The constant in ScriptEvents
     * @param  bool                 $devMode
     * @param  array<int, mixed>    $additionalArgs Arguments passed by the user
     * @param  array<string, mixed> $flags          Optional flags to pass data not as argument
     * @return int                                  return code of the executed script if any, for php scripts a false return
     *                                              value is changed to 1, anything else to 0
     */
    public function dispatchScript($eventName, $devMode = false, $additionalArgs = array(), $flags = array())
    {
        return $this->doDispatch(new Script\Event($eventName, $this->composer, $this->io, $devMode, $additionalArgs, $flags));
    }

/**
     * Dispatch a package event.
     *
     * @param string               $eventName  The constant in PackageEvents
     * @param bool                 $devMode    Whether or not we are in dev mode
     * @param RepositoryInterface  $localRepo  The installed repository
     * @param OperationInterface[] $operations The list of operations
     * @param OperationInterface   $operation  The package being installed/updated/removed
     *
     * @return int return code of the executed script if any, for php scripts a false return
     *             value is changed to 1, anything else to 0
     */
    public function dispatchPackageEvent($eventName, $devMode, RepositoryInterface $localRepo, array $operations, OperationInterface $operation)
    {
        return $this->doDispatch(new PackageEvent($eventName, $this->composer, $this->io, $devMode, $localRepo, $operations, $operation));
    }

/**
     * Dispatch a installer event.
     *
     * @param string      $eventName         The constant in InstallerEvents
     * @param bool        $devMode           Whether or not we are in dev mode
     * @param bool        $executeOperations True if operations will be executed, false in --dry-run
     * @param Transaction $transaction       The transaction contains the list of operations
     *
     * @return int return code of the executed script if any, for php scripts a false return
     *             value is changed to 1, anything else to 0
     */
    public function dispatchInstallerEvent($eventName, $devMode, $executeOperations, Transaction $transaction)
    {
        return $this->doDispatch(new InstallerEvent($eventName, $this->composer, $this->io, $devMode, $executeOperations, $transaction));
    }

/**
     * Triggers the listeners of an event.
     *
     * @param  Event                        $event The event object to pass to the event handlers/listeners.
     * @throws \RuntimeException|\Exception
     * @return int                          return code of the executed script if any, for php scripts a false return
     *                                            value is changed to 1, anything else to 0
     */
    protected function doDispatch(Event $event)
    {
        if (Platform::getEnv('COMPOSER_DEBUG_EVENTS')) {
            $details = null;
            if ($event instanceof PackageEvent) {
                $details = (string) $event->getOperation();
            }
            $this->io->writeError('Dispatching <info>'.$event->getName().'</info>'.($details ? ' ('.$details.')' : '').' event');
        }

$listeners = $this->getListeners($event);

$this->pushEvent($event);

try {
            $returnMax = 0;
            foreach ($listeners as $callable) {
                $return = 0;
                $this->ensureBinDirIsInPath();

if (!is_string($callable)) {
                    if (!is_callable($callable)) {
                        $className = is_object($callable[0]) ? get_class($callable[0]) : $callable[0];

throw new \RuntimeException('Subscriber '.$className.'::'.$callable[1].' for event '.$event->getName().' is not callable, make sure the function is defined and public');
                    }
                    if (is_array($callable) && (is_string($callable[0]) || is_object($callable[0])) && is_string($callable[1])) {
                        $this->io->writeError(sprintf('> %s: %s', $event->getName(), (is_object($callable[0]) ? get_class($callable[0]) : $callable[0]).'->'.$callable[1]), true, IOInterface::VERBOSE);
                    }
                    $return = false === call_user_func($callable, $event) ? 1 : 0;
                } elseif ($this->isComposerScript($callable)) {
                    $this->io->writeError(sprintf('> %s: %s', $event->getName(), $callable), true, IOInterface::VERBOSE);

$script = explode(' ', substr($callable, 1));
                    $scriptName = $script[0];
                    unset($script[0]);

$args = array_merge($script, $event->getArguments());
                    $flags = $event->getFlags();
                    if (strpos($callable, '@composer ') === 0) {
                        $exec = $this->getPhpExecCommand() . ' ' . ProcessExecutor::escape(Platform::getEnv('COMPOSER_BINARY')) . ' ' . implode(' ', $args);
                        if (0 !== ($exitCode = $this->executeTty($exec))) {
                            $this->io->writeError(sprintf('<error>Script %s handling the %s event returned with error code '.$exitCode.'</error>', $callable, $event->getName()), true, IOInterface::QUIET);

throw new ScriptExecutionException('Error Output: '.$this->process->getErrorOutput(), $exitCode);
                        }
                    } else {
                        if (!$this->getListeners(new Event($scriptName))) {
                            $this->io->writeError(sprintf('<warning>You made a reference to a non-existent script %s</warning>', $callable), true, IOInterface::QUIET);
                        }

try {
                            /** @var InstallerEvent $event */
                            $scriptEvent = new Script\Event($scriptName, $event->getComposer(), $event->getIO(), $event->isDevMode(), $args, $flags);
                            $scriptEvent->setOriginatingEvent($event);
                            $return = $this->dispatch($scriptName, $scriptEvent);
                        } catch (ScriptExecutionException $e) {
                            $this->io->writeError(sprintf('<error>Script %s was called via %s</error>', $callable, $event->getName()), true, IOInterface::QUIET);
                            throw $e;
                        }
                    }
                } elseif ($this->isPhpScript($callable)) {
                    $className = substr($callable, 0, strpos($callable, '::'));
                    $methodName = substr($callable, strpos($callable, '::') + 2);

if (!class_exists($className)) {
                        $this->io->writeError('<warning>Class '.$className.' is not autoloadable, can not call '.$event->getName().' script</warning>', true, IOInterface::QUIET);
                        continue;
                    }
                    if (!is_callable($callable)) {
                        $this->io->writeError('<warning>Method '.$callable.' is not callable, can not call '.$event->getName().' script</warning>', true, IOInterface::QUIET);
                        continue;
                    }

try {
                        $return = false === $this->executeEventPhpScript($className, $methodName, $event) ? 1 : 0;
                    } catch (\Exception $e) {
                        $message = "Script %s handling the %s event terminated with an exception";
                        $this->io->writeError('<error>'.sprintf($message, $callable, $event->getName()).'</error>', true, IOInterface::QUIET);
                        throw $e;
                    }
                } else {
                    $args = implode(' ', array_map(array('Composer\Util\ProcessExecutor', 'escape'), $event->getArguments()));
                    $exec = $callable . ($args === '' ? '' : ' '.$args);
                    if ($this->io->isVerbose()) {
                        $this->io->writeError(sprintf('> %s: %s', $event->getName(), $exec));
                    } elseif ($event->getName() !== '__exec_command') {
                        // do not output the command being run when using `composer exec` as it is fairly obvious the user is running it
                        $this->io->writeError(sprintf('> %s', $exec));
                    }

$possibleLocalBinaries = $this->composer->getPackage()->getBinaries();
                    if ($possibleLocalBinaries) {
                        foreach ($possibleLocalBinaries as $localExec) {
                            if (Preg::isMatch('{\b'.preg_quote($callable).'$}', $localExec)) {
                                $caller = BinaryInstaller::determineBinaryCaller($localExec);
                                $exec = Preg::replace('{^'.preg_quote($callable).'}', $caller . ' ' . $localExec, $exec);
                                break;
                            }
                        }
                    }

if (strpos($exec, '@putenv ') === 0) {
                        if (false === strpos($exec, '=')) {
                            Platform::clearEnv(substr($exec, 8));
                        } else {
                            list($var, $value) = explode('=', substr($exec, 8), 2);
                            Platform::putEnv($var, $value);
                        }

continue;
                    }
                    if (strpos($exec, '@php ') === 0) {
                        $pathAndArgs = substr($exec, 5);
                        if (Platform::isWindows()) {
                            $pathAndArgs = Preg::replaceCallback('{^\S+}', function ($path) {
                                return str_replace('/', '\\', $path[0]);
                            }, $pathAndArgs);
                        }
                        // match somename (not in quote, and not a qualified path) and if it is not a valid path from CWD then try to find it
                        // in $PATH. This allows support for `@php foo` where foo is a binary name found in PATH but not an actual relative path
                        $matched = Preg::isMatch('{^[^\'"\s/\\\\]+}', $pathAndArgs, $match);
                        if ($matched && !file_exists($match[0])) {
                            $finder = new ExecutableFinder;
                            if ($pathToExec = $finder->find($match[0])) {
                                $pathAndArgs = $pathToExec . substr($pathAndArgs, strlen($match[0]));
                            }
                        }
                        $exec = $this->getPhpExecCommand() . ' ' . $pathAndArgs;
                    } else {
                        $finder = new PhpExecutableFinder();
                        $phpPath = $finder->find(false);
                        if ($phpPath) {
                            Platform::putEnv('PHP_BINARY', $phpPath);
                        }

if (Platform::isWindows()) {
                            $exec = Preg::replaceCallback('{^\S+}', function ($path) {
                                return str_replace('/', '\\', $path[0]);
                            }, $exec);
                        }
                    }

// if composer is being executed, make sure it runs the expected composer from current path
                    // resolution, even if bin-dir contains composer too because the project requires composer/composer
                    // see https://github.com/composer/composer/issues/8748
                    if (strpos($exec, 'composer ') === 0) {
                        $exec = $this->getPhpExecCommand() . ' ' . ProcessExecutor::escape(Platform::getEnv('COMPOSER_BINARY')) . substr($exec, 8);
                    }

if (0 !== ($exitCode = $this->executeTty($exec))) {
                        $this->io->writeError(sprintf('<error>Script %s handling the %s event returned with error code '.$exitCode.'</error>', $callable, $event->getName()), true, IOInterface::QUIET);

throw new ScriptExecutionException('Error Output: '.$this->process->getErrorOutput(), $exitCode);
                    }
                }

$returnMax = max($returnMax, $return);

if ($event->isPropagationStopped()) {
                    break;
                }
            }
        } catch (\Exception $e) { // TODO Composer 2.2 turn all this into a finally
            $this->popEvent();

throw $e;
        } catch (\Throwable $e) {
            $this->popEvent();

throw $e;
        }

$this->popEvent();

return $returnMax;
    }

/**
     * @param string $exec
     *
     * @return int
     */
    protected function executeTty($exec)
    {
        if ($this->io->isInteractive()) {
            return $this->process->executeTty($exec);
        }

return $this->process->execute($exec);
    }

/**
     * @return string
     */
    protected function getPhpExecCommand()
    {
        $finder = new PhpExecutableFinder();
        $phpPath = $finder->find(false);
        if (!$phpPath) {
            throw new \RuntimeException('Failed to locate PHP binary to execute '.$phpPath);
        }
        $phpArgs = $finder->findArguments();
        $phpArgs = $phpArgs ? ' ' . implode(' ', $phpArgs) : '';
        $allowUrlFOpenFlag = ' -d allow_url_fopen=' . ProcessExecutor::escape(ini_get('allow_url_fopen'));
        $disableFunctionsFlag = ' -d disable_functions=' . ProcessExecutor::escape(ini_get('disable_functions'));
        $memoryLimitFlag = ' -d memory_limit=' . ProcessExecutor::escape(ini_get('memory_limit'));

return ProcessExecutor::escape($phpPath) . $phpArgs . $allowUrlFOpenFlag . $disableFunctionsFlag . $memoryLimitFlag;
    }

/**
     * @param string $className
     * @param string $methodName
     * @param Event  $event      Event invoking the PHP callable
     *
     * @return mixed
     */
    protected function executeEventPhpScript($className, $methodName, Event $event)
    {
        if ($this->io->isVerbose()) {
            $this->io->writeError(sprintf('> %s: %s::%s', $event->getName(), $className, $methodName));
        } else {
            $this->io->writeError(sprintf('> %s::%s', $className, $methodName));
        }

return $className::$methodName($event);
    }

/**
     * Add a listener for a particular event
     *
     * @param string   $eventName The event name - typically a constant
     * @param callable $listener  A callable expecting an event argument
     * @param int      $priority  A higher value represents a higher priority
     *
     * @return void
     */
    public function addListener($eventName, $listener, $priority = 0)
    {
        $this->listeners[$eventName][$priority][] = $listener;
    }

/**
     * @param callable|object $listener A callable or an object instance for which all listeners should be removed
     *
     * @return void
     */
    public function removeListener($listener)
    {
        foreach ($this->listeners as $eventName => $priorities) {
            foreach ($priorities as $priority => $listeners) {
                foreach ($listeners as $index => $candidate) {
                    if ($listener === $candidate || (is_array($candidate) && is_object($listener) && $candidate[0] === $listener)) {
                        unset($this->listeners[$eventName][$priority][$index]);
                    }
                }
            }
        }
    }

/**
     * Adds object methods as listeners for the events in getSubscribedEvents
     *
     * @see EventSubscriberInterface
     *
     * @param EventSubscriberInterface $subscriber
     *
     * @return void
     */
    public function addSubscriber(EventSubscriberInterface $subscriber)
    {
        foreach ($subscriber->getSubscribedEvents() as $eventName => $params) {
            if (is_string($params)) {
                $this->addListener($eventName, array($subscriber, $params));
            } elseif (is_string($params[0])) {
                $this->addListener($eventName, array($subscriber, $params[0]), isset($params[1]) ? $params[1] : 0);
            } else {
                foreach ($params as $listener) {
                    $this->addListener($eventName, array($subscriber, $listener[0]), isset($listener[1]) ? $listener[1] : 0);
                }
            }
        }
    }

/**
     * Retrieves all listeners for a given event
     *
     * @param  Event $event
     * @return array<callable|string> All listeners: callables and scripts
     */
    protected function getListeners(Event $event)
    {
        $scriptListeners = $this->runScripts ? $this->getScriptListeners($event) : array();

if (!isset($this->listeners[$event->getName()][0])) {
            $this->listeners[$event->getName()][0] = array();
        }
        krsort($this->listeners[$event->getName()]);

$listeners = $this->listeners;
        $listeners[$event->getName()][0] = array_merge($listeners[$event->getName()][0], $scriptListeners);

return call_user_func_array('array_merge', $listeners[$event->getName()]);
    }

/**
     * Checks if an event has listeners registered
     *
     * @param  Event $event
     * @return bool
     */
    public function hasEventListeners(Event $event)
    {
        $listeners = $this->getListeners($event);

return count($listeners) > 0;
    }

/**
     * Finds all listeners defined as scripts in the package
     *
     * @param  Event $event Event object
     * @return string[] Listeners
     */
    protected function getScriptListeners(Event $event)
    {
        $package = $this->composer->getPackage();
        $scripts = $package->getScripts();

if (empty($scripts[$event->getName()])) {
            return array();
        }

if ($this->loader) {
            $this->loader->unregister();
        }

$generator = $this->composer->getAutoloadGenerator();
        if ($event instanceof ScriptEvent) {
            $generator->setDevMode($event->isDevMode());
        }

$packages = $this->composer->getRepositoryManager()->getLocalRepository()->getCanonicalPackages();
        $packageMap = $generator->buildPackageMap($this->composer->getInstallationManager(), $package, $packages);
        $map = $generator->parseAutoloads($packageMap, $package);
        $this->loader = $generator->createLoader($map, $this->composer->getConfig()->get('vendor-dir'));
        $this->loader->register(false);

return $scripts[$event->getName()];
    }

/**
     * Checks if string given references a class path and method
     *
     * @param  string $callable
     * @return bool
     */
    protected function isPhpScript($callable)
    {
        return false === strpos($callable, ' ') && false !== strpos($callable, '::');
    }

/**
     * Checks if string given references a composer run-script
     *
     * @param  string $callable
     * @return bool
     */
    protected function isComposerScript($callable)
    {
        return strpos($callable, '@') === 0 && strpos($callable, '@php ') !== 0 && strpos($callable, '@putenv ') !== 0;
    }

/**
     * Push an event to the stack of active event
     *
     * @param  Event             $event
     * @throws \RuntimeException
     * @return int
     */
    protected function pushEvent(Event $event)
    {
        $eventName = $event->getName();
        if (in_array($eventName, $this->eventStack)) {
            throw new \RuntimeException(sprintf("Circular call to script handler '%s' detected", $eventName));
        }

return array_push($this->eventStack, $eventName);
    }

/**
     * Pops the active event from the stack
     *
     * @return string|null
     */
    protected function popEvent()
    {
        return array_pop($this->eventStack);
    }

/**
     * @return void
     */
    private function ensureBinDirIsInPath()
    {
        $pathEnv = 'PATH';
        if (false === Platform::getEnv('PATH') && false !== Platform::getEnv('Path')) {
            $pathEnv = 'Path';
        }

// add the bin dir to the PATH to make local binaries of deps usable in scripts
        $binDir = $this->composer->getConfig()->get('bin-dir');
        if (is_dir($binDir)) {
            $binDir = realpath($binDir);
            $pathValue = Platform::getEnv($pathEnv);
            if (!Preg::isMatch('{(^|'.PATH_SEPARATOR.')'.preg_quote($binDir).'($|'.PATH_SEPARATOR.')}', $pathValue)) {
                Platform::putEnv($pathEnv, $binDir.PATH_SEPARATOR.$pathValue);
            }
        }
    }
}
<?php

namespace Composer\DependencyResolver;

/**
 * The RuleWatchGraph efficiently propagates decisions to other rules
 *
 * All rules generated for solving a SAT problem should be inserted into the
 * graph. When a decision on a literal is made, the graph can be used to
 * propagate the decision to all other rules involving the literal, leading to
 * other trivial decisions resulting from unit clauses.
 *
 * @author Nils Adermann <naderman@naderman.de>
 */
class RuleWatchGraph
{
    /** @var array<int, RuleWatchChain> */
    protected $watchChains = array();

/**
     * Inserts a rule node into the appropriate chains within the graph
     *
     * The node is prepended to the watch chains for each of the two literals it
     * watches.
     *
     * Assertions are skipped because they only depend on a single package and
     * have no alternative literal that could be true, so there is no need to
     * watch changes in any literals.
     *
     * @param RuleWatchNode $node The rule node to be inserted into the graph
     * @return void
     */
    public function insert(RuleWatchNode $node)
    {
        if ($node->getRule()->isAssertion()) {
            return;
        }

if (!$node->getRule() instanceof MultiConflictRule) {
            foreach (array($node->watch1, $node->watch2) as $literal) {
                if (!isset($this->watchChains[$literal])) {
                    $this->watchChains[$literal] = new RuleWatchChain;
                }

$this->watchChains[$literal]->unshift($node);
            }
        } else {
            foreach ($node->getRule()->getLiterals() as $literal) {
                if (!isset($this->watchChains[$literal])) {
                    $this->watchChains[$literal] = new RuleWatchChain;
                }

$this->watchChains[$literal]->unshift($node);
            }
        }
    }

/**
     * Propagates a decision on a literal to all rules watching the literal
     *
     * If a decision, e.g. +A has been made, then all rules containing -A, e.g.
     * (-A|+B|+C) now need to satisfy at least one of the other literals, so
     * that the rule as a whole becomes true, since with +A applied the rule
     * is now (false|+B|+C) so essentially (+B|+C).
     *
     * This means that all rules watching the literal -A need to be updated to
     * watch 2 other literals which can still be satisfied instead. So literals
     * that conflict with previously made decisions are not an option.
     *
     * Alternatively it can occur that a unit clause results: e.g. if in the
     * above example the rule was (-A|+B), then A turning true means that
     * B must now be decided true as well.
     *
     * @param  int       $decidedLiteral The literal which was decided (A in our example)
     * @param  int       $level          The level at which the decision took place and at which
     *                                   all resulting decisions should be made.
     * @param  Decisions $decisions      Used to check previous decisions and to
     *                                   register decisions resulting from propagation
     * @return Rule|null If a conflict is found the conflicting rule is returned
     */
    public function propagateLiteral($decidedLiteral, $level, Decisions $decisions)
    {
        // we invert the decided literal here, example:
        // A was decided => (-A|B) now requires B to be true, so we look for
        // rules which are fulfilled by -A, rather than A.
        $literal = -$decidedLiteral;

if (!isset($this->watchChains[$literal])) {
            return null;
        }

$chain = $this->watchChains[$literal];

$chain->rewind();
        while ($chain->valid()) {
            $node = $chain->current();
            if (!$node->getRule() instanceof MultiConflictRule) {
                $otherWatch = $node->getOtherWatch($literal);

if (!$node->getRule()->isDisabled() && !$decisions->satisfy($otherWatch)) {
                    $ruleLiterals = $node->getRule()->getLiterals();

$alternativeLiterals = array_filter($ruleLiterals, function ($ruleLiteral) use ($literal, $otherWatch, $decisions) {
                        return $literal !== $ruleLiteral &&
                            $otherWatch !== $ruleLiteral &&
                            !$decisions->conflict($ruleLiteral);
                    });

if ($alternativeLiterals) {
                        reset($alternativeLiterals);
                        $this->moveWatch($literal, current($alternativeLiterals), $node);
                        continue;
                    }

if ($decisions->conflict($otherWatch)) {
                        return $node->getRule();
                    }

$decisions->decide($otherWatch, $level, $node->getRule());
                }
            } else {
                foreach ($node->getRule()->getLiterals() as $otherLiteral) {
                    if ($literal !== $otherLiteral && !$decisions->satisfy($otherLiteral)) {
                        if ($decisions->conflict($otherLiteral)) {
                            return $node->getRule();
                        }

$decisions->decide($otherLiteral, $level, $node->getRule());
                    }
                }
            }

$chain->next();
        }

return null;
    }

/**
     * Moves a rule node from one watch chain to another
     *
     * The rule node's watched literals are updated accordingly.
     *
     * @param int           $fromLiteral A literal the node used to watch
     * @param int           $toLiteral   A literal the node should watch now
     * @param RuleWatchNode $node        The rule node to be moved
     * @return void
     */
    protected function moveWatch($fromLiteral, $toLiteral, RuleWatchNode $node)
    {
        if (!isset($this->watchChains[$toLiteral])) {
            $this->watchChains[$toLiteral] = new RuleWatchChain;
        }

$node->moveWatch($fromLiteral, $toLiteral);
        $this->watchChains[$fromLiteral]->remove();
        $this->watchChains[$toLiteral]->unshift($node);
    }
}
<?php

namespace Composer\DependencyResolver;

use Composer\Package\AliasPackage;
use Composer\Package\BasePackage;
use Composer\Package\Version\VersionParser;
use Composer\Semver\CompilingMatcher;
use Composer\Semver\Constraint\ConstraintInterface;
use Composer\Semver\Constraint\Constraint;
use Composer\Semver\Constraint\MultiConstraint;
use Composer\Semver\Intervals;

/**
 * Optimizes a given pool
 *
 * @author Yanick Witschi <yanick.witschi@terminal42.ch>
 */
class PoolOptimizer
{
    /**
     * @var PolicyInterface
     */
    private $policy;

/**
     * @var array<int, true>
     */
    private $irremovablePackages = array();

/**
     * @var array<string, array<string, ConstraintInterface>>
     */
    private $requireConstraintsPerPackage = array();

/**
     * @var array<string, array<string, ConstraintInterface>>
     */
    private $conflictConstraintsPerPackage = array();

/**
     * @var array<int, true>
     */
    private $packagesToRemove = array();

/**
     * @var array<int, BasePackage[]>
     */
    private $aliasesPerPackage = array();

/**
     * @var array<string, array<string, string>>
     */
    private $removedVersionsByPackage = array();

public function __construct(PolicyInterface $policy)
    {
        $this->policy = $policy;
    }

/**
     * @return Pool
     */
    public function optimize(Request $request, Pool $pool)
    {
        $this->prepare($request, $pool);

$this->optimizeByIdenticalDependencies($request, $pool);

$this->optimizeImpossiblePackagesAway($request, $pool);

$optimizedPool = $this->applyRemovalsToPool($pool);

// No need to run this recursively at the moment
        // because the current optimizations cannot provide
        // even more gains when ran again. Might change
        // in the future with additional optimizations.

$this->irremovablePackages = array();
        $this->requireConstraintsPerPackage = array();
        $this->conflictConstraintsPerPackage = array();
        $this->packagesToRemove = array();
        $this->aliasesPerPackage = array();
        $this->removedVersionsByPackage = array();

return $optimizedPool;
    }

/**
     * @return void
     */
    private function prepare(Request $request, Pool $pool)
    {
        $irremovablePackageConstraintGroups = array();

// Mark fixed or locked packages as irremovable
        foreach ($request->getFixedOrLockedPackages() as $package) {
            $irremovablePackageConstraintGroups[$package->getName()][] = new Constraint('==', $package->getVersion());
        }

// Extract requested package requirements
        foreach ($request->getRequires() as $require => $constraint) {
            $constraint = Intervals::compactConstraint($constraint);
            $this->requireConstraintsPerPackage[$require][(string) $constraint] = $constraint;
        }

// First pass over all packages to extract information and mark package constraints irremovable
        foreach ($pool->getPackages() as $package) {
            // Extract package requirements
            foreach ($package->getRequires() as $link) {
                $constraint = Intervals::compactConstraint($link->getConstraint());
                $this->requireConstraintsPerPackage[$link->getTarget()][(string) $constraint] = $constraint;
            }
            // Extract package conflicts
            foreach ($package->getConflicts() as $link) {
                $constraint = Intervals::compactConstraint($link->getConstraint());
                $this->conflictConstraintsPerPackage[$link->getTarget()][(string) $constraint] = $constraint;
            }

// Keep track of alias packages for every package so if either the alias or aliased is kept
            // we keep the others as they are a unit of packages really
            if ($package instanceof AliasPackage) {
                $this->aliasesPerPackage[$package->getAliasOf()->id][] = $package;
            }
        }

$irremovablePackageConstraints = array();
        foreach ($irremovablePackageConstraintGroups as $packageName => $constraints) {
            $irremovablePackageConstraints[$packageName] = 1 === \count($constraints) ? $constraints[0] : new MultiConstraint($constraints, false);
        }
        unset($irremovablePackageConstraintGroups);

// Mark the packages as irremovable based on the constraints
        foreach ($pool->getPackages() as $package) {
            if (!isset($irremovablePackageConstraints[$package->getName()])) {
                continue;
            }

if (CompilingMatcher::match($irremovablePackageConstraints[$package->getName()], Constraint::OP_EQ, $package->getVersion())) {
                $this->markPackageIrremovable($package);
            }
        }
    }

/**
     * @return void
     */
    private function markPackageIrremovable(BasePackage $package)
    {
        $this->irremovablePackages[$package->id] = true;
        if ($package instanceof AliasPackage) {
            // recursing here so aliasesPerPackage for the aliasOf can be checked
            // and all its aliases marked as irremovable as well
            $this->markPackageIrremovable($package->getAliasOf());
        }
        if (isset($this->aliasesPerPackage[$package->id])) {
            foreach ($this->aliasesPerPackage[$package->id] as $aliasPackage) {
                $this->irremovablePackages[$aliasPackage->id] = true;
            }
        }
    }

/**
     * @return Pool Optimized pool
     */
    private function applyRemovalsToPool(Pool $pool)
    {
        $packages = array();
        $removedVersions = array();
        foreach ($pool->getPackages() as $package) {
            if (!isset($this->packagesToRemove[$package->id])) {
                $packages[] = $package;
            } else {
                $removedVersions[$package->getName()][$package->getVersion()] = $package->getPrettyVersion();
            }
        }

$optimizedPool = new Pool($packages, $pool->getUnacceptableFixedOrLockedPackages(), $removedVersions, $this->removedVersionsByPackage);

return $optimizedPool;
    }

/**
     * @return void
     */
    private function optimizeByIdenticalDependencies(Request $request, Pool $pool)
    {
        $identicalDefinitionsPerPackage = array();
        $packageIdenticalDefinitionLookup = array();

foreach ($pool->getPackages() as $package) {

// If that package was already marked irremovable, we can skip
            // the entire process for it
            if (isset($this->irremovablePackages[$package->id])) {
                continue;
            }

$this->markPackageForRemoval($package->id);

$dependencyHash = $this->calculateDependencyHash($package);

foreach ($package->getNames(false) as $packageName) {

if (!isset($this->requireConstraintsPerPackage[$packageName])) {
                    continue;
                }

foreach ($this->requireConstraintsPerPackage[$packageName] as $requireConstraint) {
                    $groupHashParts = array();

if (CompilingMatcher::match($requireConstraint, Constraint::OP_EQ, $package->getVersion())) {
                        $groupHashParts[] = 'require:' . (string) $requireConstraint;
                    }

if ($package->getReplaces()) {
                        foreach ($package->getReplaces() as $link) {
                            if (CompilingMatcher::match($link->getConstraint(), Constraint::OP_EQ, $package->getVersion())) {
                                // Use the same hash part as the regular require hash because that's what the replacement does
                                $groupHashParts[] = 'require:' . (string) $link->getConstraint();
                            }
                        }
                    }

if (isset($this->conflictConstraintsPerPackage[$packageName])) {
                        foreach ($this->conflictConstraintsPerPackage[$packageName] as $conflictConstraint) {
                            if (CompilingMatcher::match($conflictConstraint, Constraint::OP_EQ, $package->getVersion())) {
                                $groupHashParts[] = 'conflict:' . (string) $conflictConstraint;
                            }
                        }
                    }

if (!$groupHashParts) {
                        continue;
                    }

$groupHash = implode('', $groupHashParts);
                    $identicalDefinitionsPerPackage[$packageName][$groupHash][$dependencyHash][] = $package;
                    $packageIdenticalDefinitionLookup[$package->id][$packageName] = array('groupHash' => $groupHash, 'dependencyHash' => $dependencyHash);
                }
            }
        }

foreach ($identicalDefinitionsPerPackage as $constraintGroups) {
            foreach ($constraintGroups as $constraintGroup) {
                foreach ($constraintGroup as $packages) {
                    // Only one package in this constraint group has the same requirements, we're not allowed to remove that package
                    if (1 === \count($packages)) {
                        $this->keepPackage($packages[0], $identicalDefinitionsPerPackage, $packageIdenticalDefinitionLookup);
                        continue;
                    }

// Otherwise we find out which one is the preferred package in this constraint group which is
                    // then not allowed to be removed either
                    $literals = array();

foreach ($packages as $package) {
                        $literals[] = $package->id;
                    }

foreach ($this->policy->selectPreferredPackages($pool, $literals) as $preferredLiteral) {
                        $this->keepPackage($pool->literalToPackage($preferredLiteral), $identicalDefinitionsPerPackage, $packageIdenticalDefinitionLookup);
                    }
                }
            }
        }
    }

/**
     * @return string
     */
    private function calculateDependencyHash(BasePackage $package)
    {
        $hash = '';

$hashRelevantLinks = array(
            'requires' => $package->getRequires(),
            'conflicts' => $package->getConflicts(),
            'replaces' => $package->getReplaces(),
            'provides' => $package->getProvides()
        );

foreach ($hashRelevantLinks as $key => $links) {
            if (0 === \count($links)) {
                continue;
            }

// start new hash section
            $hash .= $key . ':';

$subhash = array();

foreach ($links as $link) {
                // To get the best dependency hash matches we should use Intervals::compactConstraint() here.
                // However, the majority of projects are going to specify their constraints already pretty
                // much in the best variant possible. In other words, we'd be wasting time here and it would actually hurt
                // performance more than the additional few packages that could be filtered out would benefit the process.
                $subhash[$link->getTarget()] = (string) $link->getConstraint();
            }

// Sort for best result
            ksort($subhash);

foreach ($subhash as $target => $constraint) {
                $hash .= $target . '@' . $constraint;
            }
        }

return $hash;
    }

/**
     * @param int $id
     * @return void
     */
    private function markPackageForRemoval($id)
    {
        // We are not allowed to remove packages if they have been marked as irremovable
        if (isset($this->irremovablePackages[$id])) {
            throw new \LogicException('Attempted removing a package which was previously marked irremovable');
        }

$this->packagesToRemove[$id] = true;
    }

/**
     * @param array<string, array<string, array<string, list<BasePackage>>>> $identicalDefinitionsPerPackage
     * @param array<int, array<string, array{groupHash: string, dependencyHash: string}>> $packageIdenticalDefinitionLookup
     * @return void
     */
    private function keepPackage(BasePackage $package, $identicalDefinitionsPerPackage, $packageIdenticalDefinitionLookup)
    {
        unset($this->packagesToRemove[$package->id]);

if ($package instanceof AliasPackage) {
            // recursing here so aliasesPerPackage for the aliasOf can be checked
            // and all its aliases marked to be kept as well
            $this->keepPackage($package->getAliasOf(), $identicalDefinitionsPerPackage, $packageIdenticalDefinitionLookup);
        }

// record all the versions of the package group so we can list them later in Problem output
        foreach ($package->getNames(false) as $name) {
            if (isset($packageIdenticalDefinitionLookup[$package->id][$name])) {
                $packageGroupPointers = $packageIdenticalDefinitionLookup[$package->id][$name];
                $packageGroup = $identicalDefinitionsPerPackage[$name][$packageGroupPointers['groupHash']][$packageGroupPointers['dependencyHash']];
                foreach ($packageGroup as $pkg) {
                    if ($pkg instanceof AliasPackage && $pkg->getPrettyVersion() === VersionParser::DEFAULT_BRANCH_ALIAS) {
                        $pkg = $pkg->getAliasOf();
                    }
                    $this->removedVersionsByPackage[spl_object_hash($package)][$pkg->getVersion()] = $pkg->getPrettyVersion();
                }
            }
        }

if (isset($this->aliasesPerPackage[$package->id])) {
            foreach ($this->aliasesPerPackage[$package->id] as $aliasPackage) {
                unset($this->packagesToRemove[$aliasPackage->id]);

// record all the versions of the package group so we can list them later in Problem output
                foreach ($aliasPackage->getNames(false) as $name) {
                    if (isset($packageIdenticalDefinitionLookup[$aliasPackage->id][$name])) {
                        $packageGroupPointers = $packageIdenticalDefinitionLookup[$aliasPackage->id][$name];
                        $packageGroup = $identicalDefinitionsPerPackage[$name][$packageGroupPointers['groupHash']][$packageGroupPointers['dependencyHash']];
                        foreach ($packageGroup as $pkg) {
                            if ($pkg instanceof AliasPackage && $pkg->getPrettyVersion() === VersionParser::DEFAULT_BRANCH_ALIAS) {
                                $pkg = $pkg->getAliasOf();
                            }
                            $this->removedVersionsByPackage[spl_object_hash($aliasPackage)][$pkg->getVersion()] = $pkg->getPrettyVersion();
                        }
                    }
                }
            }
        }
    }

/**
     * Use the list of locked packages to constrain the loaded packages
     * This will reduce packages with significant numbers of historical versions to a smaller number
     * and reduce the resulting rule set that is generated
     *
     * @return void
     */
    private function optimizeImpossiblePackagesAway(Request $request, Pool $pool)
    {
        if (count($request->getLockedPackages()) === 0) {
            return;
        }

$packageIndex = array();

foreach ($pool->getPackages() as $package) {
            $id = $package->id;

// Do not remove irremovable packages
            if (isset($this->irremovablePackages[$id])) {
                continue;
            }
            // Do not remove a package aliased by another package, nor aliases
            if (isset($this->aliasesPerPackage[$id]) || $package instanceof AliasPackage) {
                continue;
            }
            // Do not remove locked packages
            if ($request->isFixedPackage($package) || $request->isLockedPackage($package)) {
                continue;
            }

$packageIndex[$package->getName()][$package->id] = $package;
        }

foreach ($request->getLockedPackages() as $package) {
            // If this locked package is no longer required by root or anything in the pool, it may get uninstalled so do not apply its requirements
            // In a case where a requirement WERE to appear in the pool by a package that would not be used, it would've been unlocked and so not filtered still
            $isUnusedPackage = true;
            foreach ($package->getNames(false) as $packageName) {
                if (isset($this->requireConstraintsPerPackage[$packageName])) {
                    $isUnusedPackage = false;
                    break;
                }
            }

if ($isUnusedPackage) {
                continue;
            }

foreach ($package->getRequires() as $link) {
                $require = $link->getTarget();
                if (!isset($packageIndex[$require])) {
                    continue;
                }

$linkConstraint = $link->getConstraint();
                foreach ($packageIndex[$require] as $id => $requiredPkg) {
                    if (false === CompilingMatcher::match($linkConstraint, Constraint::OP_EQ, $requiredPkg->getVersion())) {
                        $this->markPackageForRemoval($id);
                        unset($packageIndex[$require][$id]);
                    }
                }
            }
        }
    }
}
<?php

namespace Composer\DependencyResolver;

use Composer\Filter\PlatformRequirementFilter\IgnoreListPlatformRequirementFilter;
use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterFactory;
use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterInterface;
use Composer\IO\IOInterface;
use Composer\Package\BasePackage;

/**
 * @author Nils Adermann <naderman@naderman.de>
 */
class Solver
{
    const BRANCH_LITERALS = 0;
    const BRANCH_LEVEL = 1;

/** @var PolicyInterface */
    protected $policy;
    /** @var Pool */
    protected $pool;

/** @var RuleSet */
    protected $rules;

/** @var RuleWatchGraph */
    protected $watchGraph;
    /** @var Decisions */
    protected $decisions;
    /** @var BasePackage[] */
    protected $fixedMap;

/** @var int */
    protected $propagateIndex;
    /** @var mixed[] */
    protected $branches = array();
    /** @var Problem[] */
    protected $problems = array();
    /** @var array<Rule[]> */
    protected $learnedPool = array();
    /** @var array<string, int> */
    protected $learnedWhy = array();

/** @var bool */
    public $testFlagLearnedPositiveLiteral = false;

/** @var IOInterface */
    protected $io;

public function __construct(PolicyInterface $policy, Pool $pool, IOInterface $io)
    {
        $this->io = $io;
        $this->policy = $policy;
        $this->pool = $pool;
    }

/**
     * @return int
     */
    public function getRuleSetSize()
    {
        return \count($this->rules);
    }

/**
     * @return Pool
     */
    public function getPool()
    {
        return $this->pool;
    }

// aka solver_makeruledecisions

/**
     * @return void
     */
    private function makeAssertionRuleDecisions()
    {
        $decisionStart = \count($this->decisions) - 1;

$rulesCount = \count($this->rules);
        for ($ruleIndex = 0; $ruleIndex < $rulesCount; $ruleIndex++) {
            $rule = $this->rules->ruleById[$ruleIndex];

if (!$rule->isAssertion() || $rule->isDisabled()) {
                continue;
            }

$literals = $rule->getLiterals();
            $literal = $literals[0];

if (!$this->decisions->decided($literal)) {
                $this->decisions->decide($literal, 1, $rule);
                continue;
            }

if ($this->decisions->satisfy($literal)) {
                continue;
            }

// found a conflict
            if (RuleSet::TYPE_LEARNED === $rule->getType()) {
                $rule->disable();
                continue;
            }

$conflict = $this->decisions->decisionRule($literal);

if ($conflict && RuleSet::TYPE_PACKAGE === $conflict->getType()) {
                $problem = new Problem();

$problem->addRule($rule);
                $problem->addRule($conflict);
                $rule->disable();
                $this->problems[] = $problem;
                continue;
            }

// conflict with another root require/fixed package
            $problem = new Problem();
            $problem->addRule($rule);
            $problem->addRule($conflict);

// push all of our rules (can only be root require/fixed package rules)
            // asserting this literal on the problem stack
            foreach ($this->rules->getIteratorFor(RuleSet::TYPE_REQUEST) as $assertRule) {
                if ($assertRule->isDisabled() || !$assertRule->isAssertion()) {
                    continue;
                }

$assertRuleLiterals = $assertRule->getLiterals();
                $assertRuleLiteral = $assertRuleLiterals[0];

if (abs($literal) !== abs($assertRuleLiteral)) {
                    continue;
                }
                $problem->addRule($assertRule);
                $assertRule->disable();
            }
            $this->problems[] = $problem;

$this->decisions->resetToOffset($decisionStart);
            $ruleIndex = -1;
        }
    }

/**
     * @return void
     */
    protected function setupFixedMap(Request $request)
    {
        $this->fixedMap = array();
        foreach ($request->getFixedPackages() as $package) {
            $this->fixedMap[$package->id] = $package;
        }
    }

/**
     * @return void
     */
    protected function checkForRootRequireProblems(Request $request, PlatformRequirementFilterInterface $platformRequirementFilter)
    {
        foreach ($request->getRequires() as $packageName => $constraint) {
            if ($platformRequirementFilter->isIgnored($packageName)) {
                continue;
            } elseif ($platformRequirementFilter instanceof IgnoreListPlatformRequirementFilter) {
                $constraint = $platformRequirementFilter->filterConstraint($packageName, $constraint);
            }

if (!$this->pool->whatProvides($packageName, $constraint)) {
                $problem = new Problem();
                $problem->addRule(new GenericRule(array(), Rule::RULE_ROOT_REQUIRE, array('packageName' => $packageName, 'constraint' => $constraint)));
                $this->problems[] = $problem;
            }
        }
    }

/**
     * @return LockTransaction
     */
    public function solve(Request $request, PlatformRequirementFilterInterface $platformRequirementFilter = null)
    {
        $platformRequirementFilter = $platformRequirementFilter ?: PlatformRequirementFilterFactory::ignoreNothing();

$this->setupFixedMap($request);

$this->io->writeError('Generating rules', true, IOInterface::DEBUG);
        $ruleSetGenerator = new RuleSetGenerator($this->policy, $this->pool);
        $this->rules = $ruleSetGenerator->getRulesFor($request, $platformRequirementFilter);
        unset($ruleSetGenerator);
        $this->checkForRootRequireProblems($request, $platformRequirementFilter);
        $this->decisions = new Decisions($this->pool);
        $this->watchGraph = new RuleWatchGraph;

foreach ($this->rules as $rule) {
            $this->watchGraph->insert(new RuleWatchNode($rule));
        }

/* make decisions based on root require/fix assertions */
        $this->makeAssertionRuleDecisions();

$this->io->writeError('Resolving dependencies through SAT', true, IOInterface::DEBUG);
        $before = microtime(true);
        $this->runSat();
        $this->io->writeError('', true, IOInterface::DEBUG);
        $this->io->writeError(sprintf('Dependency resolution completed in %.3f seconds', microtime(true) - $before), true, IOInterface::VERBOSE);

if ($this->problems) {
            throw new SolverProblemsException($this->problems, $this->learnedPool);
        }

return new LockTransaction($this->pool, $request->getPresentMap(), $request->getFixedPackagesMap(), $this->decisions);
    }

/**
     * Makes a decision and propagates it to all rules.
     *
     * Evaluates each term affected by the decision (linked through watches)
     * If we find unit rules we make new decisions based on them
     *
     * @param  int       $level
     * @return Rule|null A rule on conflict, otherwise null.
     */
    protected function propagate($level)
    {
        while ($this->decisions->validOffset($this->propagateIndex)) {
            $decision = $this->decisions->atOffset($this->propagateIndex);

$conflict = $this->watchGraph->propagateLiteral(
                $decision[Decisions::DECISION_LITERAL],
                $level,
                $this->decisions
            );

$this->propagateIndex++;

if ($conflict) {
                return $conflict;
            }
        }

return null;
    }

/**
     * Reverts a decision at the given level.
     *
     * @param int $level
     *
     * @return void
     */
    private function revert($level)
    {
        while (!$this->decisions->isEmpty()) {
            $literal = $this->decisions->lastLiteral();

if ($this->decisions->undecided($literal)) {
                break;
            }

$decisionLevel = $this->decisions->decisionLevel($literal);

if ($decisionLevel <= $level) {
                break;
            }

$this->decisions->revertLast();
            $this->propagateIndex = \count($this->decisions);
        }

while (!empty($this->branches) && $this->branches[\count($this->branches) - 1][self::BRANCH_LEVEL] >= $level) {
            array_pop($this->branches);
        }
    }

/**
     * setpropagatelearn
     *
     * add free decision (a positive literal) to decision queue
     * increase level and propagate decision
     * return if no conflict.
     *
     * in conflict case, analyze conflict rule, add resulting
     * rule to learnt rule set, make decision from learnt
     * rule (always unit) and re-propagate.
     *
     * returns the new solver level or 0 if unsolvable
     *
     * @param  int        $level
     * @param  string|int $literal
     * @return int
     */
    private function setPropagateLearn($level, $literal, Rule $rule)
    {
        $level++;

$this->decisions->decide($literal, $level, $rule);

while (true) {
            $rule = $this->propagate($level);

if (!$rule) {
                break;
            }

if ($level == 1) {
                return $this->analyzeUnsolvable($rule);
            }

// conflict
            list($learnLiteral, $newLevel, $newRule, $why) = $this->analyze($level, $rule);

if ($newLevel <= 0 || $newLevel >= $level) {
                throw new SolverBugException(
                    "Trying to revert to invalid level ".$newLevel." from level ".$level."."
                );
            }

$level = $newLevel;

$this->revert($level);

$this->rules->add($newRule, RuleSet::TYPE_LEARNED);

$this->learnedWhy[spl_object_hash($newRule)] = $why;

$ruleNode = new RuleWatchNode($newRule);
            $ruleNode->watch2OnHighest($this->decisions);
            $this->watchGraph->insert($ruleNode);

$this->decisions->decide($learnLiteral, $level, $newRule);
        }

return $level;
    }

/**
     * @param  int   $level
     * @param  int[] $decisionQueue
     * @return int
     */
    private function selectAndInstall($level, array $decisionQueue, Rule $rule)
    {
        // choose best package to install from decisionQueue
        $literals = $this->policy->selectPreferredPackages($this->pool, $decisionQueue, $rule->getRequiredPackage());

$selectedLiteral = array_shift($literals);

// if there are multiple candidates, then branch
        if (\count($literals)) {
            $this->branches[] = array($literals, $level);
        }

return $this->setPropagateLearn($level, $selectedLiteral, $rule);
    }

/**
     * @param  int   $level
     * @return array{int, int, GenericRule, int}
     */
    protected function analyze($level, Rule $rule)
    {
        $analyzedRule = $rule;
        $ruleLevel = 1;
        $num = 0;
        $l1num = 0;
        $seen = array();
        $learnedLiterals = array(null);

$decisionId = \count($this->decisions);

$this->learnedPool[] = array();

while (true) {
            $this->learnedPool[\count($this->learnedPool) - 1][] = $rule;

foreach ($rule->getLiterals() as $literal) {
                // multiconflictrule is really a bunch of rules in one, so some may not have finished propagating yet
                if ($rule instanceof MultiConflictRule && !$this->decisions->decided($literal)) {
                    continue;
                }

// skip the one true literal
                if ($this->decisions->satisfy($literal)) {
                    continue;
                }

if (isset($seen[abs($literal)])) {
                    continue;
                }
                $seen[abs($literal)] = true;

$l = $this->decisions->decisionLevel($literal);

if (1 === $l) {
                    $l1num++;
                } elseif ($level === $l) {
                    $num++;
                } else {
                    // not level1 or conflict level, add to new rule
                    $learnedLiterals[] = $literal;

if ($l > $ruleLevel) {
                        $ruleLevel = $l;
                    }
                }
            }
            unset($literal);

$l1retry = true;
            while ($l1retry) {
                $l1retry = false;

if (0 === $num && 0 === --$l1num) {
                    // all level 1 literals done
                    break 2;
                }

while (true) {
                    if ($decisionId <= 0) {
                        throw new SolverBugException(
                            "Reached invalid decision id $decisionId while looking through $rule for a literal present in the analyzed rule $analyzedRule."
                        );
                    }

$decisionId--;

$decision = $this->decisions->atOffset($decisionId);
                    $literal = $decision[Decisions::DECISION_LITERAL];

if (isset($seen[abs($literal)])) {
                        break;
                    }
                }

unset($seen[abs($literal)]);

if (0 !== $num && 0 === --$num) {
                    if ($literal < 0) {
                        $this->testFlagLearnedPositiveLiteral = true;
                    }
                    $learnedLiterals[0] = -$literal;

if (!$l1num) {
                        break 2;
                    }

foreach ($learnedLiterals as $i => $learnedLiteral) {
                        if ($i !== 0) {
                            unset($seen[abs($learnedLiteral)]);
                        }
                    }
                    // only level 1 marks left
                    $l1num++;
                    $l1retry = true;
                } else {
                    $decision = $this->decisions->atOffset($decisionId);
                    $rule = $decision[Decisions::DECISION_REASON];

if ($rule instanceof MultiConflictRule) {
                        // there is only ever exactly one positive decision in a multiconflict rule
                        foreach ($rule->getLiterals() as $literal) {
                            if (!isset($seen[abs($literal)]) && $this->decisions->satisfy(-$literal)) {
                                $this->learnedPool[\count($this->learnedPool) - 1][] = $rule;
                                $l = $this->decisions->decisionLevel($literal);
                                if (1 === $l) {
                                    $l1num++;
                                } elseif ($level === $l) {
                                    $num++;
                                } else {
                                    // not level1 or conflict level, add to new rule
                                    $learnedLiterals[] = $literal;

if ($l > $ruleLevel) {
                                        $ruleLevel = $l;
                                    }
                                }
                                $seen[abs($literal)] = true;
                                break;
                            }
                        }

$l1retry = true;
                    }
                }
            }

$decision = $this->decisions->atOffset($decisionId);
            $rule = $decision[Decisions::DECISION_REASON];
        }

$why = \count($this->learnedPool) - 1;

if (!$learnedLiterals[0]) {
            throw new SolverBugException(
                "Did not find a learnable literal in analyzed rule $analyzedRule."
            );
        }

$newRule = new GenericRule($learnedLiterals, Rule::RULE_LEARNED, $why);

return array($learnedLiterals[0], $ruleLevel, $newRule, $why);
    }

/**
     * @param array<string, true> $ruleSeen
     * @return void
     */
    private function analyzeUnsolvableRule(Problem $problem, Rule $conflictRule, array &$ruleSeen)
    {
        $why = spl_object_hash($conflictRule);
        $ruleSeen[$why] = true;

if ($conflictRule->getType() == RuleSet::TYPE_LEARNED) {
            $learnedWhy = $this->learnedWhy[$why];
            $problemRules = $this->learnedPool[$learnedWhy];

foreach ($problemRules as $problemRule) {
                if (!isset($ruleSeen[spl_object_hash($problemRule)])) {
                    $this->analyzeUnsolvableRule($problem, $problemRule, $ruleSeen);
                }
            }

return;
        }

if ($conflictRule->getType() == RuleSet::TYPE_PACKAGE) {
            // package rules cannot be part of a problem
            return;
        }

$problem->nextSection();
        $problem->addRule($conflictRule);
    }

/**
     * @return int
     */
    private function analyzeUnsolvable(Rule $conflictRule)
    {
        $problem = new Problem();
        $problem->addRule($conflictRule);

$ruleSeen = array();

$this->analyzeUnsolvableRule($problem, $conflictRule, $ruleSeen);

$this->problems[] = $problem;

$seen = array();
        $literals = $conflictRule->getLiterals();

foreach ($literals as $literal) {
            // skip the one true literal
            if ($this->decisions->satisfy($literal)) {
                continue;
            }
            $seen[abs($literal)] = true;
        }

foreach ($this->decisions as $decision) {
            $literal = $decision[Decisions::DECISION_LITERAL];

// skip literals that are not in this rule
            if (!isset($seen[abs($literal)])) {
                continue;
            }

$why = $decision[Decisions::DECISION_REASON];

$problem->addRule($why);
            $this->analyzeUnsolvableRule($problem, $why, $ruleSeen);

$literals = $why->getLiterals();

foreach ($literals as $literal) {
                // skip the one true literal
                if ($this->decisions->satisfy($literal)) {
                    continue;
                }
                $seen[abs($literal)] = true;
            }
        }

return 0;
    }

/**
     * enable/disable learnt rules
     *
     * we have enabled or disabled some of our rules. We now re-enable all
     * of our learnt rules except the ones that were learnt from rules that
     * are now disabled.
     *
     * @return void
     */
    private function enableDisableLearnedRules()
    {
        foreach ($this->rules->getIteratorFor(RuleSet::TYPE_LEARNED) as $rule) {
            $why = $this->learnedWhy[spl_object_hash($rule)];
            $problemRules = $this->learnedPool[$why];

$foundDisabled = false;
            foreach ($problemRules as $problemRule) {
                if ($problemRule->isDisabled()) {
                    $foundDisabled = true;
                    break;
                }
            }

if ($foundDisabled && $rule->isEnabled()) {
                $rule->disable();
            } elseif (!$foundDisabled && $rule->isDisabled()) {
                $rule->enable();
            }
        }
    }

/**
     * @return void
     */
    private function runSat()
    {
        $this->propagateIndex = 0;

/*
         * here's the main loop:
         * 1) propagate new decisions (only needed once)
         * 2) fulfill root requires/fixed packages
         * 3) fulfill all unresolved rules
         * 4) minimalize solution if we had choices
         * if we encounter a problem, we rewind to a safe level and restart
         * with step 1
         */

$level = 1;
        $systemLevel = $level + 1;

while (true) {
            if (1 === $level) {
                $conflictRule = $this->propagate($level);
                if (null !== $conflictRule) {
                    if ($this->analyzeUnsolvable($conflictRule)) {
                        continue;
                    }

return;
                }
            }

// handle root require/fixed package rules
            if ($level < $systemLevel) {
                $iterator = $this->rules->getIteratorFor(RuleSet::TYPE_REQUEST);
                foreach ($iterator as $rule) {
                    if ($rule->isEnabled()) {
                        $decisionQueue = array();
                        $noneSatisfied = true;

foreach ($rule->getLiterals() as $literal) {
                            if ($this->decisions->satisfy($literal)) {
                                $noneSatisfied = false;
                                break;
                            }
                            if ($literal > 0 && $this->decisions->undecided($literal)) {
                                $decisionQueue[] = $literal;
                            }
                        }

if ($noneSatisfied && \count($decisionQueue)) {
                            // if any of the options in the decision queue are fixed, only use those
                            $prunedQueue = array();
                            foreach ($decisionQueue as $literal) {
                                if (isset($this->fixedMap[abs($literal)])) {
                                    $prunedQueue[] = $literal;
                                }
                            }
                            if (!empty($prunedQueue)) {
                                $decisionQueue = $prunedQueue;
                            }
                        }

if ($noneSatisfied && \count($decisionQueue)) {
                            $oLevel = $level;
                            $level = $this->selectAndInstall($level, $decisionQueue, $rule);

if (0 === $level) {
                                return;
                            }
                            if ($level <= $oLevel) {
                                break;
                            }
                        }
                    }
                }

$systemLevel = $level + 1;

// root requires/fixed packages left
                $iterator->next();
                if ($iterator->valid()) {
                    continue;
                }
            }

if ($level < $systemLevel) {
                $systemLevel = $level;
            }

$rulesCount = \count($this->rules);
            $pass = 1;

$this->io->writeError('Looking at all rules.', true, IOInterface::DEBUG);
            for ($i = 0, $n = 0; $n < $rulesCount; $i++, $n++) {
                if ($i == $rulesCount) {
                    if (1 === $pass) {
                        $this->io->writeError("Something's changed, looking at all rules again (pass #$pass)", false, IOInterface::DEBUG);
                    } else {
                        $this->io->overwriteError("Something's changed, looking at all rules again (pass #$pass)", false, null, IOInterface::DEBUG);
                    }

$i = 0;
                    $pass++;
                }

$rule = $this->rules->ruleById[$i];
                $literals = $rule->getLiterals();

if ($rule->isDisabled()) {
                    continue;
                }

$decisionQueue = array();

// make sure that
                // * all negative literals are installed
                // * no positive literal is installed
                // i.e. the rule is not fulfilled and we
                // just need to decide on the positive literals
                //
                foreach ($literals as $literal) {
                    if ($literal <= 0) {
                        if (!$this->decisions->decidedInstall($literal)) {
                            continue 2; // next rule
                        }
                    } else {
                        if ($this->decisions->decidedInstall($literal)) {
                            continue 2; // next rule
                        }
                        if ($this->decisions->undecided($literal)) {
                            $decisionQueue[] = $literal;
                        }
                    }
                }

// need to have at least 2 item to pick from
                if (\count($decisionQueue) < 2) {
                    continue;
                }

$level = $this->selectAndInstall($level, $decisionQueue, $rule);

if (0 === $level) {
                    return;
                }

// something changed, so look at all rules again
                $rulesCount = \count($this->rules);
                $n = -1;
            }

if ($level < $systemLevel) {
                continue;
            }

// minimization step
            if (\count($this->branches)) {
                $lastLiteral = null;
                $lastLevel = null;
                $lastBranchIndex = 0;
                $lastBranchOffset = 0;

for ($i = \count($this->branches) - 1; $i >= 0; $i--) {
                    list($literals, $l) = $this->branches[$i];

foreach ($literals as $offset => $literal) {
                        if ($literal && $literal > 0 && $this->decisions->decisionLevel($literal) > $l + 1) {
                            $lastLiteral = $literal;
                            $lastBranchIndex = $i;
                            $lastBranchOffset = $offset;
                            $lastLevel = $l;
                        }
                    }
                }

if ($lastLiteral) {
                    unset($this->branches[$lastBranchIndex][self::BRANCH_LITERALS][$lastBranchOffset]);

$level = $lastLevel;
                    $this->revert($level);

$why = $this->decisions->lastReason();

$level = $this->setPropagateLearn($level, $lastLiteral, $why);

if ($level == 0) {
                        return;
                    }

continue;
                }
            }

break;
        }
    }
}
<?php

namespace Composer\DependencyResolver;

use Composer\Package\AliasPackage;
use Composer\Package\BasePackage;
use Composer\Package\Link;
use Composer\Repository\PlatformRepository;
use Composer\Repository\RepositorySet;
use Composer\Package\Version\VersionParser;
use Composer\Semver\Constraint\Constraint;
use Composer\Semver\Constraint\ConstraintInterface;

/**
 * @author Nils Adermann <naderman@naderman.de>
 * @author Ruben Gonzalez <rubenrua@gmail.com>
 * @phpstan-type ReasonData Link|BasePackage|string|int|array{packageName: string, constraint: ConstraintInterface}|array{package: BasePackage}
 */
abstract class Rule
{
    // reason constants and // their reason data contents
    const RULE_ROOT_REQUIRE = 2; // array{packageName: string, constraint: ConstraintInterface}
    const RULE_FIXED = 3; // array{package: BasePackage}
    const RULE_PACKAGE_CONFLICT = 6; // Link
    const RULE_PACKAGE_REQUIRES = 7; // Link
    const RULE_PACKAGE_SAME_NAME = 10; // string (package name)
    const RULE_LEARNED = 12; // int (rule id)
    const RULE_PACKAGE_ALIAS = 13; // BasePackage
    const RULE_PACKAGE_INVERSE_ALIAS = 14; // BasePackage

// bitfield defs
    const BITFIELD_TYPE = 0;
    const BITFIELD_REASON = 8;
    const BITFIELD_DISABLED = 16;

/** @var int */
    protected $bitfield;
    /** @var Request */
    protected $request;
    /**
     * @var Link|BasePackage|ConstraintInterface|string
     * @phpstan-var ReasonData
     */
    protected $reasonData;

/**
     * @param self::RULE_* $reason     A RULE_* constant describing the reason for generating this rule
     * @param mixed        $reasonData
     *
     * @phpstan-param ReasonData $reasonData
     */
    public function __construct($reason, $reasonData)
    {
        $this->reasonData = $reasonData;

$this->bitfield = (0 << self::BITFIELD_DISABLED) |
            ($reason << self::BITFIELD_REASON) |
            (255 << self::BITFIELD_TYPE);
    }

/**
     * @return int[]
     */
    abstract public function getLiterals();

/**
     * @return int|string
     */
    abstract public function getHash();

abstract public function __toString();

/**
     * @param Rule $rule
     * @return bool
     */
    abstract public function equals(Rule $rule);

/**
     * @return int
     */
    public function getReason()
    {
        return ($this->bitfield & (255 << self::BITFIELD_REASON)) >> self::BITFIELD_REASON;
    }

/**
     * @phpstan-return ReasonData
     */
    public function getReasonData()
    {
        return $this->reasonData;
    }

/**
     * @return string|null
     */
    public function getRequiredPackage()
    {
        $reason = $this->getReason();

if ($reason === self::RULE_ROOT_REQUIRE) {
            return $this->reasonData['packageName'];
        }

if ($reason === self::RULE_FIXED) {
            return $this->reasonData['package']->getName();
        }

if ($reason === self::RULE_PACKAGE_REQUIRES) {
            return $this->reasonData->getTarget();
        }

return null;
    }

/**
     * @param RuleSet::TYPE_* $type
     * @return void
     */
    public function setType($type)
    {
        $this->bitfield = ($this->bitfield & ~(255 << self::BITFIELD_TYPE)) | ((255 & $type) << self::BITFIELD_TYPE);
    }

/**
     * @return int
     */
    public function getType()
    {
        return ($this->bitfield & (255 << self::BITFIELD_TYPE)) >> self::BITFIELD_TYPE;
    }

/**
     * @return void
     */
    public function disable()
    {
        $this->bitfield = ($this->bitfield & ~(255 << self::BITFIELD_DISABLED)) | (1 << self::BITFIELD_DISABLED);
    }

/**
     * @return void
     */
    public function enable()
    {
        $this->bitfield &= ~(255 << self::BITFIELD_DISABLED);
    }

/**
     * @return bool
     */
    public function isDisabled()
    {
        return (bool) (($this->bitfield & (255 << self::BITFIELD_DISABLED)) >> self::BITFIELD_DISABLED);
    }

/**
     * @return bool
     */
    public function isEnabled()
    {
        return !(($this->bitfield & (255 << self::BITFIELD_DISABLED)) >> self::BITFIELD_DISABLED);
    }

/**
     * @return bool
     */
    abstract public function isAssertion();

/**
     * @return bool
     */
    public function isCausedByLock(RepositorySet $repositorySet, Request $request, Pool $pool)
    {
        if ($this->getReason() === self::RULE_PACKAGE_REQUIRES) {
            if (PlatformRepository::isPlatformPackage($this->reasonData->getTarget())) {
                return false;
            }
            if ($request->getLockedRepository()) {
                foreach ($request->getLockedRepository()->getPackages() as $package) {
                    if ($package->getName() === $this->reasonData->getTarget()) {
                        if ($pool->isUnacceptableFixedOrLockedPackage($package)) {
                            return true;
                        }
                        if (!$this->reasonData->getConstraint()->matches(new Constraint('=', $package->getVersion()))) {
                            return true;
                        }
                        // required package was locked but has been unlocked and still matches
                        if (!$request->isLockedPackage($package)) {
                            return true;
                        }
                        break;
                    }
                }
            }
        }

if ($this->getReason() === self::RULE_ROOT_REQUIRE) {
            if (PlatformRepository::isPlatformPackage($this->reasonData['packageName'])) {
                return false;
            }
            if ($request->getLockedRepository()) {
                foreach ($request->getLockedRepository()->getPackages() as $package) {
                    if ($package->getName() === $this->reasonData['packageName']) {
                        if ($pool->isUnacceptableFixedOrLockedPackage($package)) {
                            return true;
                        }
                        if (!$this->reasonData['constraint']->matches(new Constraint('=', $package->getVersion()))) {
                            return true;
                        }
                        break;
                    }
                }
            }
        }

return false;
    }

/**
     * @internal
     * @return BasePackage
     */
    public function getSourcePackage(Pool $pool)
    {
        $literals = $this->getLiterals();

switch ($this->getReason()) {
            case self::RULE_PACKAGE_CONFLICT:
                $package1 = $this->deduplicateDefaultBranchAlias($pool->literalToPackage($literals[0]));
                $package2 = $this->deduplicateDefaultBranchAlias($pool->literalToPackage($literals[1]));

if ($reasonData = $this->getReasonData()) {
                    // swap literals if they are not in the right order with package2 being the conflicter
                    if ($reasonData->getSource() === $package1->getName()) {
                        list($package2, $package1) = array($package1, $package2);
                    }
                }

return $package2;

case self::RULE_PACKAGE_REQUIRES:
                $sourceLiteral = array_shift($literals);
                $sourcePackage = $this->deduplicateDefaultBranchAlias($pool->literalToPackage($sourceLiteral));

return $sourcePackage;

default:
                throw new \LogicException('Not implemented');
        }
    }

/**
     * @param bool $isVerbose
     * @param BasePackage[] $installedMap
     * @param array<Rule[]> $learnedPool
     * @return string
     */
    public function getPrettyString(RepositorySet $repositorySet, Request $request, Pool $pool, $isVerbose, array $installedMap = array(), array $learnedPool = array())
    {
        $literals = $this->getLiterals();

switch ($this->getReason()) {
            case self::RULE_ROOT_REQUIRE:
                $packageName = $this->reasonData['packageName'];
                $constraint = $this->reasonData['constraint'];

$packages = $pool->whatProvides($packageName, $constraint);
                if (!$packages) {
                    return 'No package found to satisfy root composer.json require '.$packageName.($constraint ? ' '.$constraint->getPrettyString() : '');
                }

$packagesNonAlias = array_values(array_filter($packages, function ($p) {
                    return !($p instanceof AliasPackage);
                }));
                if (count($packagesNonAlias) === 1) {
                    $package = $packagesNonAlias[0];
                    if ($request->isLockedPackage($package)) {
                        return $package->getPrettyName().' is locked to version '.$package->getPrettyVersion()." and an update of this package was not requested.";
                    }
                }

return 'Root composer.json requires '.$packageName.($constraint ? ' '.$constraint->getPrettyString() : '').' -> satisfiable by '.$this->formatPackagesUnique($pool, $packages, $isVerbose, $constraint).'.';

case self::RULE_FIXED:
                $package = $this->deduplicateDefaultBranchAlias($this->reasonData['package']);

if ($request->isLockedPackage($package)) {
                    return $package->getPrettyName().' is locked to version '.$package->getPrettyVersion().' and an update of this package was not requested.';
                }

return $package->getPrettyName().' is present at version '.$package->getPrettyVersion() . ' and cannot be modified by Composer';

case self::RULE_PACKAGE_CONFLICT:
                $package1 = $this->deduplicateDefaultBranchAlias($pool->literalToPackage($literals[0]));
                $package2 = $this->deduplicateDefaultBranchAlias($pool->literalToPackage($literals[1]));

$conflictTarget = $package1->getPrettyString();
                if ($reasonData = $this->getReasonData()) {
                    assert($reasonData instanceof Link);

// swap literals if they are not in the right order with package2 being the conflicter
                    if ($reasonData->getSource() === $package1->getName()) {
                        list($package2, $package1) = array($package1, $package2);
                        $conflictTarget = $package1->getPrettyName().' '.$reasonData->getPrettyConstraint();
                    }

// if the conflict is not directly against the package but something it provides/replaces,
                    // we try to find that link to display a better message
                    if ($reasonData->getTarget() !== $package1->getName()) {
                        $provideType = null;
                        $provided = null;
                        foreach ($package1->getProvides() as $provide) {
                            if ($provide->getTarget() === $reasonData->getTarget()) {
                                $provideType = 'provides';
                                $provided = $provide->getPrettyConstraint();
                                break;
                            }
                        }
                        foreach ($package1->getReplaces() as $replace) {
                            if ($replace->getTarget() === $reasonData->getTarget()) {
                                $provideType = 'replaces';
                                $provided = $replace->getPrettyConstraint();
                                break;
                            }
                        }
                        if (null !== $provideType) {
                            $conflictTarget = $reasonData->getTarget().' '.$reasonData->getPrettyConstraint().' ('.$package1->getPrettyString().' '.$provideType.' '.$reasonData->getTarget().' '.$provided.')';
                        }
                    }
                }

return $package2->getPrettyString().' conflicts with '.$conflictTarget.'.';

$requires = array();
                foreach ($literals as $literal) {
                    $requires[] = $pool->literalToPackage($literal);
                }

$text = $reasonData->getPrettyString($sourcePackage);
                if ($requires) {
                    $text .= ' -> satisfiable by ' . $this->formatPackagesUnique($pool, $requires, $isVerbose, $this->reasonData->getConstraint()) . '.';
                } else {
                    $targetName = $reasonData->getTarget();

$reason = Problem::getMissingPackageReason($repositorySet, $request, $pool, $isVerbose, $targetName, $this->reasonData->getConstraint());

return $text . ' -> ' . $reason[1];
                }

return $text;

case self::RULE_PACKAGE_SAME_NAME:
                $packageNames = array();
                foreach ($literals as $literal) {
                    $package = $pool->literalToPackage($literal);
                    $packageNames[$package->getName()] = true;
                }
                $replacedName = $this->reasonData;

if (count($packageNames) > 1) {
                    $reason = null;

if (!isset($packageNames[$replacedName])) {
                        $reason = 'They '.(count($literals) == 2 ? 'both' : 'all').' replace '.$replacedName.' and thus cannot coexist.';
                    } else {
                        $replacerNames = $packageNames;
                        unset($replacerNames[$replacedName]);
                        $replacerNames = array_keys($replacerNames);

if (count($replacerNames) == 1) {
                            $reason = $replacerNames[0] . ' replaces ';
                        } else {
                            $reason = '['.implode(', ', $replacerNames).'] replace ';
                        }
                        $reason .= $replacedName.' and thus cannot coexist with it.';
                    }

$installedPackages = array();
                    $removablePackages = array();
                    foreach ($literals as $literal) {
                        if (isset($installedMap[abs($literal)])) {
                            $installedPackages[] = $pool->literalToPackage($literal);
                        } else {
                            $removablePackages[] = $pool->literalToPackage($literal);
                        }
                    }

if ($installedPackages && $removablePackages) {
                        return $this->formatPackagesUnique($pool, $removablePackages, $isVerbose, null, true).' cannot be installed as that would require removing '.$this->formatPackagesUnique($pool, $installedPackages, $isVerbose, null, true).'. '.$reason;
                    }

return 'Only one of these can be installed: '.$this->formatPackagesUnique($pool, $literals, $isVerbose, null, true).'. '.$reason;
                }

return 'You can only install one version of a package, so only one of these can be installed: ' . $this->formatPackagesUnique($pool, $literals, $isVerbose, null, true) . '.';
            case self::RULE_LEARNED:
                /** @TODO currently still generates way too much output to be helpful, and in some cases can even lead to endless recursion */
                // if (isset($learnedPool[$this->reasonData])) {
                //     echo $this->reasonData."\n";
                //     $learnedString = ', learned rules:' . Problem::formatDeduplicatedRules($learnedPool[$this->reasonData], '        ', $repositorySet, $request, $pool, $isVerbose, $installedMap, $learnedPool);
                // } else {
                //     $learnedString = ' (reasoning unavailable)';
                // }
                $learnedString = ' (conflict analysis result)';

if (count($literals) === 1) {
                    $ruleText = $pool->literalToPrettyString($literals[0], $installedMap);
                } else {
                    $groups = array();
                    foreach ($literals as $literal) {
                        $package = $pool->literalToPackage($literal);
                        if (isset($installedMap[$package->id])) {
                            $group = $literal > 0 ? 'keep' : 'remove';
                        } else {
                            $group = $literal > 0 ? 'install' : 'don\'t install';
                        }

$groups[$group][] = $this->deduplicateDefaultBranchAlias($package);
                    }
                    $ruleTexts = array();
                    foreach ($groups as $group => $packages) {
                        $ruleTexts[] = $group . (count($packages) > 1 ? ' one of' : '').' ' . $this->formatPackagesUnique($pool, $packages, $isVerbose);
                    }

$ruleText = implode(' | ', $ruleTexts);
                }

return 'Conclusion: '.$ruleText.$learnedString;
            case self::RULE_PACKAGE_ALIAS:
                $aliasPackage = $pool->literalToPackage($literals[0]);

// avoid returning content like "9999999-dev is an alias of dev-master" as it is useless
                if ($aliasPackage->getVersion() === VersionParser::DEFAULT_BRANCH_ALIAS) {
                    return '';
                }
                $package = $this->deduplicateDefaultBranchAlias($pool->literalToPackage($literals[1]));

return $aliasPackage->getPrettyString() .' is an alias of '.$package->getPrettyString().' and thus requires it to be installed too.';
            case self::RULE_PACKAGE_INVERSE_ALIAS:
                // inverse alias rules work the other way around than above
                $aliasPackage = $pool->literalToPackage($literals[1]);

return $aliasPackage->getPrettyString() .' is an alias of '.$package->getPrettyString().' and must be installed with it.';
            default:
                $ruleText = '';
                foreach ($literals as $i => $literal) {
                    if ($i != 0) {
                        $ruleText .= '|';
                    }
                    $ruleText .= $pool->literalToPrettyString($literal, $installedMap);
                }

return '('.$ruleText.')';
        }
    }

/**
     * @param array<int|BasePackage> $packages An array containing packages or literals
     * @param bool $isVerbose
     * @param bool $useRemovedVersionGroup
     * @return string
     */
    protected function formatPackagesUnique(Pool $pool, array $packages, $isVerbose, ConstraintInterface $constraint = null, $useRemovedVersionGroup = false)
    {
        foreach ($packages as $index => $package) {
            if (!\is_object($package)) {
                $packages[$index] = $pool->literalToPackage($package);
            }
        }

return Problem::getPackageList($packages, $isVerbose, $pool, $constraint, $useRemovedVersionGroup);
    }

/**
     * @return BasePackage
     */
    private function deduplicateDefaultBranchAlias(BasePackage $package)
    {
        if ($package instanceof AliasPackage && $package->getPrettyVersion() === VersionParser::DEFAULT_BRANCH_ALIAS) {
            $package = $package->getAliasOf();
        }

return $package;
    }
}
<?php

namespace Composer\DependencyResolver;

use Composer\Util\IniHelper;
use Composer\Repository\RepositorySet;

/**
 * @author Nils Adermann <naderman@naderman.de>
 *
 * @method self::ERROR_DEPENDENCY_RESOLUTION_FAILED getCode()
 */
class SolverProblemsException extends \RuntimeException
{
    const ERROR_DEPENDENCY_RESOLUTION_FAILED = 2;

/** @var Problem[] */
    protected $problems;
    /** @var array<Rule[]> */
    protected $learnedPool;

/**
     * @param Problem[] $problems
     * @param array<Rule[]> $learnedPool
     */
    public function __construct(array $problems, array $learnedPool)
    {
        $this->problems = $problems;
        $this->learnedPool = $learnedPool;

parent::__construct('Failed resolving dependencies with '.count($problems).' problems, call getPrettyString to get formatted details', self::ERROR_DEPENDENCY_RESOLUTION_FAILED);
    }

/**
     * @param bool $isVerbose
     * @param bool $isDevExtraction
     * @return string
     */
    public function getPrettyString(RepositorySet $repositorySet, Request $request, Pool $pool, $isVerbose, $isDevExtraction = false)
    {
        $installedMap = $request->getPresentMap(true);
        $missingExtensions = array();
        $isCausedByLock = false;

$problems = array();
        foreach ($this->problems as $problem) {
            $problems[] = $problem->getPrettyString($repositorySet, $request, $pool, $isVerbose, $installedMap, $this->learnedPool)."\n";

$missingExtensions = array_merge($missingExtensions, $this->getExtensionProblems($problem->getReasons()));

$isCausedByLock = $isCausedByLock || $problem->isCausedByLock($repositorySet, $request, $pool);
        }

$i = 1;
        $text = "\n";
        foreach (array_unique($problems) as $problem) {
            $text .= "  Problem ".($i++).$problem;
        }

$hints = array();
        if (!$isDevExtraction && (strpos($text, 'could not be found') || strpos($text, 'no matching package found'))) {
            $hints[] = "Potential causes:\n - A typo in the package name\n - The package is not available in a stable-enough version according to your minimum-stability setting\n   see <https://getcomposer.org/doc/04-schema.md#minimum-stability> for more details.\n - It's a private package and you forgot to add a custom repository to find it\n\nRead <https://getcomposer.org/doc/articles/troubleshooting.md> for further common problems.";
        }

if (!empty($missingExtensions)) {
            $hints[] = $this->createExtensionHint($missingExtensions);
        }

if ($isCausedByLock && !$isDevExtraction && !$request->getUpdateAllowTransitiveRootDependencies()) {
            $hints[] = "Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.";
        }

if (strpos($text, 'found composer-plugin-api[2.0.0] but it does not match') && strpos($text, '- ocramius/package-versions')) {
            $hints[] = "<warning>ocramius/package-versions only provides support for Composer 2 in 1.8+, which requires PHP 7.4.</warning>\nIf you can not upgrade PHP you can require <info>composer/package-versions-deprecated</info> to resolve this with PHP 7.0+.";
        }

if (!class_exists('PHPUnit\Framework\TestCase', false)) {
            if (strpos($text, 'found composer-plugin-api[2.0.0] but it does not match')) {
                $hints[] = "You are using Composer 2, which some of your plugins seem to be incompatible with. Make sure you update your plugins or report a plugin-issue to ask them to support Composer 2.";
            }
        }

if ($hints) {
            $text .= "\n" . implode("\n\n", $hints);
        }

return $text;
    }

/**
     * @return Problem[]
     */
    public function getProblems()
    {
        return $this->problems;
    }

/**
     * @param string[] $missingExtensions
     * @return string
     */
    private function createExtensionHint(array $missingExtensions)
    {
        $paths = IniHelper::getAll();

if (count($paths) === 1 && empty($paths[0])) {
            return '';
        }

$ignoreExtensionsArguments = implode(" ", array_map(function ($extension) {
            return "--ignore-platform-req=$extension";
        }, $missingExtensions));

$text = "To enable extensions, verify that they are enabled in your .ini files:\n    - ";
        $text .= implode("\n    - ", $paths);
        $text .= "\nYou can also run `php --ini` in a terminal to see which files are used by PHP in CLI mode.";
        $text .= "\nAlternatively, you can run Composer with `$ignoreExtensionsArguments` to temporarily ignore these required extensions.";

return $text;
    }

/**
     * @param Rule[][] $reasonSets
     * @return string[]
     */
    private function getExtensionProblems(array $reasonSets)
    {
        $missingExtensions = array();
        foreach ($reasonSets as $reasonSet) {
            foreach ($reasonSet as $rule) {
                $required = $rule->getRequiredPackage();
                if (null !== $required && 0 === strpos($required, 'ext-')) {
                    $missingExtensions[$required] = 1;
                }
            }
        }

return array_keys($missingExtensions);
    }
}
<?php

namespace Composer\DependencyResolver;

/**
 * @author Nils Adermann <naderman@naderman.de>
 * @phpstan-import-type ReasonData from Rule
 */
class Rule2Literals extends Rule
{
    /** @var int */
    protected $literal1;
    /** @var int */
    protected $literal2;

/**
     * @param int $literal1
     * @param int $literal2
     * @param Rule::RULE_* $reason A RULE_* constant
     * @param mixed $reasonData
     *
     * @phpstan-param ReasonData $reasonData
     */
    public function __construct($literal1, $literal2, $reason, $reasonData)
    {
        parent::__construct($reason, $reasonData);

if ($literal1 < $literal2) {
            $this->literal1 = $literal1;
            $this->literal2 = $literal2;
        } else {
            $this->literal1 = $literal2;
            $this->literal2 = $literal1;
        }
    }

/** @return int[] */
    public function getLiterals()
    {
        return array($this->literal1, $this->literal2);
    }

/**
     * @inheritDoc
     */
    public function getHash()
    {
        return $this->literal1.','.$this->literal2;
    }

/**
     * Checks if this rule is equal to another one
     *
     * Ignores whether either of the rules is disabled.
     *
     * @param  Rule $rule The rule to check against
     * @return bool Whether the rules are equal
     */
    public function equals(Rule $rule)
    {
        // specialized fast-case
        if ($rule instanceof self) {
            if ($this->literal1 !== $rule->literal1) {
                return false;
            }

if ($this->literal2 !== $rule->literal2) {
                return false;
            }

return true;
        }

$literals = $rule->getLiterals();
        if (2 != \count($literals)) {
            return false;
        }

if ($this->literal1 !== $literals[0]) {
            return false;
        }

if ($this->literal2 !== $literals[1]) {
            return false;
        }

return true;
    }

/** @return false */
    public function isAssertion()
    {
        return false;
    }

/**
     * Formats a rule as a string of the format (Literal1|Literal2|...)
     *
     * @return string
     */
    public function __toString()
    {
        $result = $this->isDisabled() ? 'disabled(' : '(';

$result .= $this->literal1 . '|' . $this->literal2 . ')';

return $result;
    }
}
<?php

namespace Composer\DependencyResolver;

/**
 * Wrapper around a Rule which keeps track of the two literals it watches
 *
 * Used by RuleWatchGraph to store rules in two RuleWatchChains.
 *
 * @author Nils Adermann <naderman@naderman.de>
 */
class RuleWatchNode
{
    /** @var int */
    public $watch1;
    /** @var int */
    public $watch2;

/** @var Rule */
    protected $rule;

/**
     * Creates a new node watching the first and second literals of the rule.
     *
     * @param Rule $rule The rule to wrap
     */
    public function __construct(Rule $rule)
    {
        $this->rule = $rule;

$literals = $rule->getLiterals();

$literalCount = \count($literals);
        $this->watch1 = $literalCount > 0 ? $literals[0] : 0;
        $this->watch2 = $literalCount > 1 ? $literals[1] : 0;
    }

/**
     * Places the second watch on the rule's literal, decided at the highest level
     *
     * Useful for learned rules where the literal for the highest rule is most
     * likely to quickly lead to further decisions.
     *
     * @param Decisions $decisions The decisions made so far by the solver
     * @return void
     */
    public function watch2OnHighest(Decisions $decisions)
    {
        $literals = $this->rule->getLiterals();

// if there are only 2 elements, both are being watched anyway
        if (\count($literals) < 3 || $this->rule instanceof MultiConflictRule) {
            return;
        }

$watchLevel = 0;

foreach ($literals as $literal) {
            $level = $decisions->decisionLevel($literal);

if ($level > $watchLevel) {
                $this->watch2 = $literal;
                $watchLevel = $level;
            }
        }
    }

/**
     * Returns the rule this node wraps
     *
     * @return Rule
     */
    public function getRule()
    {
        return $this->rule;
    }

/**
     * Given one watched literal, this method returns the other watched literal
     *
     * @param  int $literal The watched literal that should not be returned
     * @return int A literal
     */
    public function getOtherWatch($literal)
    {
        if ($this->watch1 == $literal) {
            return $this->watch2;
        }

return $this->watch1;
    }

/**
     * Moves a watch from one literal to another
     *
     * @param int $from The previously watched literal
     * @param int $to   The literal to be watched now
     * @return void
     */
    public function moveWatch($from, $to)
    {
        if ($this->watch1 == $from) {
            $this->watch1 = $to;
        } else {
            $this->watch2 = $to;
        }
    }
}
<?php

namespace Composer\DependencyResolver;

use Composer\Repository\RepositorySet;

/**
 * @author Nils Adermann <naderman@naderman.de>
 * @implements \IteratorAggregate<Rule>
 */
class RuleSet implements \IteratorAggregate, \Countable
{
    // highest priority => lowest number
    const TYPE_PACKAGE = 0;
    const TYPE_REQUEST = 1;
    const TYPE_LEARNED = 4;

/**
     * READ-ONLY: Lookup table for rule id to rule object
     *
     * @var array<int, Rule>
     */
    public $ruleById = array();

/** @var array<0|1|4, string> */
    protected static $types = array(
        self::TYPE_PACKAGE => 'PACKAGE',
        self::TYPE_REQUEST => 'REQUEST',
        self::TYPE_LEARNED => 'LEARNED',
    );

/** @var array<self::TYPE_*, Rule[]> */
    protected $rules;

/** @var int */
    protected $nextRuleId = 0;

/** @var array<int|string, Rule|Rule[]> */
    protected $rulesByHash = array();

public function __construct()
    {
        foreach ($this->getTypes() as $type) {
            $this->rules[$type] = array();
        }
    }

/**
     * @param self::TYPE_* $type
     * @return void
     */
    public function add(Rule $rule, $type)
    {
        if (!isset(self::$types[$type])) {
            throw new \OutOfBoundsException('Unknown rule type: ' . $type);
        }

$hash = $rule->getHash();

// Do not add if rule already exists
        if (isset($this->rulesByHash[$hash])) {
            $potentialDuplicates = $this->rulesByHash[$hash];
            if (\is_array($potentialDuplicates)) {
                foreach ($potentialDuplicates as $potentialDuplicate) {
                    if ($rule->equals($potentialDuplicate)) {
                        return;
                    }
                }
            } else {
                if ($rule->equals($potentialDuplicates)) {
                    return;
                }
            }
        }

if (!isset($this->rules[$type])) {
            $this->rules[$type] = array();
        }

$this->rules[$type][] = $rule;
        $this->ruleById[$this->nextRuleId] = $rule;
        $rule->setType($type);

$this->nextRuleId++;

if (!isset($this->rulesByHash[$hash])) {
            $this->rulesByHash[$hash] = $rule;
        } elseif (\is_array($this->rulesByHash[$hash])) {
            $this->rulesByHash[$hash][] = $rule;
        } else {
            $originalRule = $this->rulesByHash[$hash];
            $this->rulesByHash[$hash] = array($originalRule, $rule);
        }
    }

/**
     * @return int
     */
    #[\ReturnTypeWillChange]
    public function count()
    {
        return $this->nextRuleId;
    }

/**
     * @param int $id
     * @return Rule
     */
    public function ruleById($id)
    {
        return $this->ruleById[$id];
    }

/** @return array<self::TYPE_*, Rule[]> */
    public function getRules()
    {
        return $this->rules;
    }

/**
     * @return RuleSetIterator
     */
    #[\ReturnTypeWillChange]
    public function getIterator()
    {
        return new RuleSetIterator($this->getRules());
    }

/**
     * @param  self::TYPE_*|array<self::TYPE_*> $types
     * @return RuleSetIterator
     */
    public function getIteratorFor($types)
    {
        if (!\is_array($types)) {
            $types = array($types);
        }

$allRules = $this->getRules();

/** @var array<self::TYPE_*, Rule[]> $rules */
        $rules = array();

foreach ($types as $type) {
            $rules[$type] = $allRules[$type];
        }

return new RuleSetIterator($rules);
    }

/**
     * @param array<self::TYPE_*>|self::TYPE_* $types
     * @return RuleSetIterator
     */
    public function getIteratorWithout($types)
    {
        if (!\is_array($types)) {
            $types = array($types);
        }

$rules = $this->getRules();

foreach ($types as $type) {
            unset($rules[$type]);
        }

return new RuleSetIterator($rules);
    }

/** @return array{0: 0, 1: 1, 2: 4} */
    public function getTypes()
    {
        $types = self::$types;

return array_keys($types);
    }

/**
     * @param bool $isVerbose
     * @return string
     */
    public function getPrettyString(RepositorySet $repositorySet = null, Request $request = null, Pool $pool = null, $isVerbose = false)
    {
        $string = "\n";
        foreach ($this->rules as $type => $rules) {
            $string .= str_pad(self::$types[$type], 8, ' ') . ": ";
            foreach ($rules as $rule) {
                $string .= ($repositorySet && $request && $pool ? $rule->getPrettyString($repositorySet, $request, $pool, $isVerbose) : $rule)."\n";
            }
            $string .= "\n\n";
        }

return $string;
    }

public function __toString()
    {
        return $this->getPrettyString();
    }
}
<?php

namespace Composer\DependencyResolver;

use Composer\Package\BasePackage;
use Composer\Package\Version\VersionParser;
use Composer\Semver\CompilingMatcher;
use Composer\Semver\Constraint\ConstraintInterface;
use Composer\Semver\Constraint\Constraint;

/**
 * A package pool contains all packages for dependency resolution
 *
 * @author Nils Adermann <naderman@naderman.de>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class Pool implements \Countable
{
    /** @var BasePackage[] */
    protected $packages = array();
    /** @var array<string, BasePackage[]> */
    protected $packageByName = array();
    /** @var VersionParser */
    protected $versionParser;
    /** @var array<string, array<string, BasePackage[]>> */
    protected $providerCache = array();
    /** @var BasePackage[] */
    protected $unacceptableFixedOrLockedPackages;
    /** @var array<string, array<string, string>> Map of package name => normalized version => pretty version */
    protected $removedVersions = array();
    /** @var array<string, array<string, string>> Map of package object hash => removed normalized versions => removed pretty version */
    protected $removedVersionsByPackage = array();

/**
     * @param BasePackage[] $packages
     * @param BasePackage[] $unacceptableFixedOrLockedPackages
     * @param array<string, array<string, string>> $removedVersions
     * @param array<string, array<string, string>> $removedVersionsByPackage
     */
    public function __construct(array $packages = array(), array $unacceptableFixedOrLockedPackages = array(), array $removedVersions = array(), array $removedVersionsByPackage = array())
    {
        $this->versionParser = new VersionParser;
        $this->setPackages($packages);
        $this->unacceptableFixedOrLockedPackages = $unacceptableFixedOrLockedPackages;
        $this->removedVersions = $removedVersions;
        $this->removedVersionsByPackage = $removedVersionsByPackage;
    }

/**
     * @param  string $name
     * @return array<string, string>
     */
    public function getRemovedVersions($name, ConstraintInterface $constraint)
    {
        if (!isset($this->removedVersions[$name])) {
            return array();
        }

$result = array();
        foreach ($this->removedVersions[$name] as $version => $prettyVersion) {
            if ($constraint->matches(new Constraint('==', $version))) {
                $result[$version] = $prettyVersion;
            }
        }

return $result;
    }

/**
     * @param  string $objectHash
     * @return array<string, string>
     */
    public function getRemovedVersionsByPackage($objectHash)
    {
        if (!isset($this->removedVersionsByPackage[$objectHash])) {
            return array();
        }

return $this->removedVersionsByPackage[$objectHash];
    }

/**
     * @param BasePackage[] $packages
     * @return void
     */
    private function setPackages(array $packages)
    {
        $id = 1;

foreach ($packages as $package) {
            $this->packages[] = $package;

$package->id = $id++;

foreach ($package->getNames() as $provided) {
                $this->packageByName[$provided][] = $package;
            }
        }
    }

/**
     * @return BasePackage[]
     */
    public function getPackages()
    {
        return $this->packages;
    }

/**
     * Retrieves the package object for a given package id.
     *
     * @param  int         $id
     * @return BasePackage
     */
    public function packageById($id)
    {
        return $this->packages[$id - 1];
    }

/**
     * Returns how many packages have been loaded into the pool
     * @return int
     */
    #[\ReturnTypeWillChange]
    public function count()
    {
        return \count($this->packages);
    }

/**
     * Searches all packages providing the given package name and match the constraint
     *
     * @param string $name The package name to be searched for
     * @param ?ConstraintInterface $constraint A constraint that all returned
     *                                         packages must match or null to return all
     * @return BasePackage[] A set of packages
     */
    public function whatProvides($name, ConstraintInterface $constraint = null)
    {
        $key = (string) $constraint;
        if (isset($this->providerCache[$name][$key])) {
            return $this->providerCache[$name][$key];
        }

return $this->providerCache[$name][$key] = $this->computeWhatProvides($name, $constraint);
    }

/**
     * @param  string               $name       The package name to be searched for
     * @param  ?ConstraintInterface $constraint A constraint that all returned
     *                                          packages must match or null to return all
     * @return BasePackage[]
     */
    private function computeWhatProvides($name, ConstraintInterface $constraint = null)
    {
        if (!isset($this->packageByName[$name])) {
            return array();
        }

$matches = array();

foreach ($this->packageByName[$name] as $candidate) {
            if ($this->match($candidate, $name, $constraint)) {
                $matches[] = $candidate;
            }
        }

return $matches;
    }

/**
     * @param int $literal
     * @return BasePackage
     */
    public function literalToPackage($literal)
    {
        $packageId = abs($literal);

return $this->packageById($packageId);
    }

/**
     * @param int $literal
     * @param array<int, BasePackage> $installedMap
     * @return string
     */
    public function literalToPrettyString($literal, $installedMap)
    {
        $package = $this->literalToPackage($literal);

if (isset($installedMap[$package->id])) {
            $prefix = ($literal > 0 ? 'keep' : 'remove');
        } else {
            $prefix = ($literal > 0 ? 'install' : 'don\'t install');
        }

return $prefix.' '.$package->getPrettyString();
    }

/**
     * Checks if the package matches the given constraint directly or through
     * provided or replaced packages
     *
     * @param  string              $name       Name of the package to be matched
     * @return bool
     */
    public function match(BasePackage $candidate, $name, ConstraintInterface $constraint = null)
    {
        $candidateName = $candidate->getName();
        $candidateVersion = $candidate->getVersion();

if ($candidateName === $name) {
            return $constraint === null || CompilingMatcher::match($constraint, Constraint::OP_EQ, $candidateVersion);
        }

$provides = $candidate->getProvides();
        $replaces = $candidate->getReplaces();

// aliases create multiple replaces/provides for one target so they can not use the shortcut below
        if (isset($replaces[0]) || isset($provides[0])) {
            foreach ($provides as $link) {
                if ($link->getTarget() === $name && ($constraint === null || $constraint->matches($link->getConstraint()))) {
                    return true;
                }
            }

foreach ($replaces as $link) {
                if ($link->getTarget() === $name && ($constraint === null || $constraint->matches($link->getConstraint()))) {
                    return true;
                }
            }

return false;
        }

if (isset($provides[$name]) && ($constraint === null || $constraint->matches($provides[$name]->getConstraint()))) {
            return true;
        }

if (isset($replaces[$name]) && ($constraint === null || $constraint->matches($replaces[$name]->getConstraint()))) {
            return true;
        }

return false;
    }

/**
     * @return bool
     */
    public function isUnacceptableFixedOrLockedPackage(BasePackage $package)
    {
        return \in_array($package, $this->unacceptableFixedOrLockedPackages, true);
    }

/**
     * @return BasePackage[]
     */
    public function getUnacceptableFixedOrLockedPackages()
    {
        return $this->unacceptableFixedOrLockedPackages;
    }

public function __toString()
    {
        $str = "Pool:\n";

foreach ($this->packages as $package) {
            $str .= '- '.str_pad((string) $package->id, 6, ' ', STR_PAD_LEFT).': '.$package->getName()."\n";
        }

return $str;
    }
}
<?php

namespace Composer\DependencyResolver;

/**
 * @author Nils Adermann <naderman@naderman.de>
 *
 * MultiConflictRule([A, B, C]) acts as Rule([-A, -B]), Rule([-A, -C]), Rule([-B, -C])
 */
class MultiConflictRule extends Rule
{
    /** @var int[] */
    protected $literals;

/**
     * @param int[] $literals
     */
    public function __construct(array $literals, $reason, $reasonData)
    {
        parent::__construct($reason, $reasonData);

if (\count($literals) < 3) {
            throw new \RuntimeException("multi conflict rule requires at least 3 literals");
        }

// sort all packages ascending by id
        sort($literals);

$this->literals = $literals;
    }

/**
     * @return int[]
     */
    public function getLiterals()
    {
        return $this->literals;
    }

/**
     * @inheritDoc
     */
    public function getHash()
    {
        $data = unpack('ihash', md5('c:'.implode(',', $this->literals), true));

return $data['hash'];
    }

/**
     * Checks if this rule is equal to another one
     *
     * Ignores whether either of the rules is disabled.
     *
     * @param  Rule $rule The rule to check against
     * @return bool Whether the rules are equal
     */
    public function equals(Rule $rule)
    {
        if ($rule instanceof MultiConflictRule) {
            return $this->literals === $rule->getLiterals();
        }

return false;
    }

/**
     * @return bool
     */
    public function isAssertion()
    {
        return false;
    }

/**
     * @return never
     * @throws \RuntimeException
     */
    public function disable()
    {
        throw new \RuntimeException("Disabling multi conflict rules is not possible. Please contact composer at https://github.com/composer/composer to let us debug what lead to this situation.");
    }

/**
     * Formats a rule as a string of the format (Literal1|Literal2|...)
     *
     * @return string
     */
    public function __toString()
    {
        // TODO multi conflict?
        $result = $this->isDisabled() ? 'disabled(multi(' : '(multi(';

foreach ($this->literals as $i => $literal) {
            if ($i != 0) {
                $result .= '|';
            }
            $result .= $literal;
        }

$result .= '))';

return $result;
    }
}
<?php

namespace Composer\DependencyResolver\Operation;

use Composer\Package\AliasPackage;

/**
 * Solver install operation.
 *
 * @author Nils Adermann <naderman@naderman.de>
 */
class MarkAliasUninstalledOperation extends SolverOperation implements OperationInterface
{
    const TYPE = 'markAliasUninstalled';

/**
     * @var AliasPackage
     */
    protected $package;

public function __construct(AliasPackage $package)
    {
        $this->package = $package;
    }

/**
     * Returns package instance.
     *
     * @return AliasPackage
     */
    public function getPackage()
    {
        return $this->package;
    }

/**
     * @inheritDoc
     */
    public function show($lock)
    {
        return 'Marking <info>'.$this->package->getPrettyName().'</info> (<comment>'.$this->package->getFullPrettyVersion().'</comment>) as uninstalled, alias of <info>'.$this->package->getAliasOf()->getPrettyName().'</info> (<comment>'.$this->package->getAliasOf()->getFullPrettyVersion().'</comment>)';
    }
}
<?php

namespace Composer\DependencyResolver\Operation;

/**
 * Abstract operation class.
 *
 * @author Aleksandr Bezpiatov <aleksandr.bezpiatov@spryker.com>
 */
abstract class SolverOperation implements OperationInterface
{
    const TYPE = null;

/**
     * Returns operation type.
     *
     * @return string
     */
    public function getOperationType()
    {
        return static::TYPE;
    }

/**
     * @inheritDoc
     */
    public function __toString()
    {
        return $this->show(false);
    }
}
<?php

namespace Composer\DependencyResolver\Operation;

use Composer\Package\PackageInterface;
use Composer\Package\Version\VersionParser;

/**
 * Solver update operation.
 *
 * @author Konstantin Kudryashov <ever.zet@gmail.com>
 */
class UpdateOperation extends SolverOperation implements OperationInterface
{
    const TYPE = 'update';

/**
     * @var PackageInterface
     */
    protected $initialPackage;

/**
     * @var PackageInterface
     */
    protected $targetPackage;

/**
     * @param PackageInterface $initial initial package
     * @param PackageInterface $target  target package (updated)
     */
    public function __construct(PackageInterface $initial, PackageInterface $target)
    {
        $this->initialPackage = $initial;
        $this->targetPackage = $target;
    }

/**
     * Returns initial package.
     *
     * @return PackageInterface
     */
    public function getInitialPackage()
    {
        return $this->initialPackage;
    }

/**
     * Returns target package.
     *
     * @return PackageInterface
     */
    public function getTargetPackage()
    {
        return $this->targetPackage;
    }

/**
     * @inheritDoc
     */
    public function show($lock)
    {
        return self::format($this->initialPackage, $this->targetPackage, $lock);
    }

/**
     * @param bool $lock
     * @return string
     */
    public static function format(PackageInterface $initialPackage, PackageInterface $targetPackage, $lock = false)
    {
        $fromVersion = $initialPackage->getFullPrettyVersion();
        $toVersion = $targetPackage->getFullPrettyVersion();

if ($fromVersion === $toVersion && $initialPackage->getSourceReference() !== $targetPackage->getSourceReference()) {
            $fromVersion = $initialPackage->getFullPrettyVersion(true, PackageInterface::DISPLAY_SOURCE_REF);
            $toVersion = $targetPackage->getFullPrettyVersion(true, PackageInterface::DISPLAY_SOURCE_REF);
        } elseif ($fromVersion === $toVersion && $initialPackage->getDistReference() !== $targetPackage->getDistReference()) {
            $fromVersion = $initialPackage->getFullPrettyVersion(true, PackageInterface::DISPLAY_DIST_REF);
            $toVersion = $targetPackage->getFullPrettyVersion(true, PackageInterface::DISPLAY_DIST_REF);
        }

$actionName = VersionParser::isUpgrade($initialPackage->getVersion(), $targetPackage->getVersion()) ? 'Upgrading' : 'Downgrading';

return $actionName.' <info>'.$initialPackage->getPrettyName().'</info> (<comment>'.$fromVersion.'</comment> => <comment>'.$toVersion.'</comment>)';
    }
}
<?php

namespace Composer\DependencyResolver\Operation;

/**
 * Solver operation interface.
 *
 * @author Konstantin Kudryashov <ever.zet@gmail.com>
 */
interface OperationInterface
{
    /**
     * Returns operation type.
     *
     * @return string
     */
    public function getOperationType();

/**
     * Serializes the operation in a human readable format
     *
     * @param  bool   $lock Whether this is an operation on the lock file
     * @return string
     */
    public function show($lock);

/**
     * Serializes the operation in a human readable format
     *
     * @return string
     */
    public function __toString();
}
<?php

namespace Composer\DependencyResolver\Operation;

use Composer\Package\AliasPackage;

/**
 * Solver install operation.
 *
 * @author Nils Adermann <naderman@naderman.de>
 */
class MarkAliasInstalledOperation extends SolverOperation implements OperationInterface
{
    const TYPE = 'markAliasInstalled';

/**
     * @var AliasPackage
     */
    protected $package;

public function __construct(AliasPackage $package)
    {
        $this->package = $package;
    }

/**
     * Returns package instance.
     *
     * @return AliasPackage
     */
    public function getPackage()
    {
        return $this->package;
    }

/**
     * @inheritDoc
     */
    public function show($lock)
    {
        return 'Marking <info>'.$this->package->getPrettyName().'</info> (<comment>'.$this->package->getFullPrettyVersion().'</comment>) as installed, alias of <info>'.$this->package->getAliasOf()->getPrettyName().'</info> (<comment>'.$this->package->getAliasOf()->getFullPrettyVersion().'</comment>)';
    }
}
<?php

namespace Composer\DependencyResolver\Operation;

use Composer\Package\PackageInterface;

/**
 * Solver uninstall operation.
 *
 * @author Konstantin Kudryashov <ever.zet@gmail.com>
 */
class UninstallOperation extends SolverOperation implements OperationInterface
{
    const TYPE = 'uninstall';

/**
     * @var PackageInterface
     */
    protected $package;

public function __construct(PackageInterface $package)
    {
        $this->package = $package;
    }

/**
     * Returns package instance.
     *
     * @return PackageInterface
     */
    public function getPackage()
    {
        return $this->package;
    }

/**
     * @inheritDoc
     */
    public function show($lock)
    {
        return self::format($this->package, $lock);
    }

/**
     * @param bool $lock
     * @return string
     */
    public static function format(PackageInterface $package, $lock = false)
    {
        return 'Removing <info>'.$package->getPrettyName().'</info> (<comment>'.$package->getFullPrettyVersion().'</comment>)';
    }
}
<?php

namespace Composer\DependencyResolver\Operation;

use Composer\Package\PackageInterface;

/**
 * Solver install operation.
 *
 * @author Konstantin Kudryashov <ever.zet@gmail.com>
 */
class InstallOperation extends SolverOperation implements OperationInterface
{
    const TYPE = 'install';

/**
     * @var PackageInterface
     */
    protected $package;

public function __construct(PackageInterface $package)
    {
        $this->package = $package;
    }

/**
     * Returns package instance.
     *
     * @return PackageInterface
     */
    public function getPackage()
    {
        return $this->package;
    }

/**
     * @inheritDoc
     */
    public function show($lock)
    {
        return self::format($this->package, $lock);
    }

/**
     * @param bool $lock
     * @return string
     */
    public static function format(PackageInterface $package, $lock = false)
    {
        return ($lock ? 'Locking ' : 'Installing ').'<info>'.$package->getPrettyName().'</info> (<comment>'.$package->getFullPrettyVersion().'</comment>)';
    }
}
<?php

namespace Composer\DependencyResolver;

use Composer\Repository\InstalledRepositoryInterface;
use Composer\Repository\RepositoryInterface;

/**
 * @author Nils Adermann <naderman@naderman.de>
 * @internal
 */
class LocalRepoTransaction extends Transaction
{
    public function __construct(RepositoryInterface $lockedRepository, InstalledRepositoryInterface $localRepository)
    {
        parent::__construct(
            $localRepository->getPackages(),
            $lockedRepository->getPackages()
        );
    }
}
<?php

namespace Composer\DependencyResolver;

use Composer\Package\AliasPackage;
use Composer\Package\BasePackage;
use Composer\Package\Package;

/**
 * @author Nils Adermann <naderman@naderman.de>
 * @internal
 */
class LockTransaction extends Transaction
{
    /**
     * packages in current lock file, platform repo or otherwise present
     *
     * Indexed by spl_object_hash
     *
     * @var array<string, BasePackage>
     */
    protected $presentMap;

/**
     * Packages which cannot be mapped, platform repo, root package, other fixed repos
     *
     * Indexed by package id
     *
     * @var array<int, BasePackage>
     */
    protected $unlockableMap;

/**
     * @var array{dev: BasePackage[], non-dev: BasePackage[], all: BasePackage[]}
     */
    protected $resultPackages;

/**
     * @param array<string, BasePackage> $presentMap
     * @param array<int, BasePackage> $unlockableMap
     */
    public function __construct(Pool $pool, array $presentMap, array $unlockableMap, Decisions $decisions)
    {
        $this->presentMap = $presentMap;
        $this->unlockableMap = $unlockableMap;

$this->setResultPackages($pool, $decisions);
        parent::__construct($this->presentMap, $this->resultPackages['all']);
    }

// TODO make this a bit prettier instead of the two text indexes?
    /**
     * @return void
     */
    public function setResultPackages(Pool $pool, Decisions $decisions)
    {
        $this->resultPackages = array('all' => array(), 'non-dev' => array(), 'dev' => array());
        foreach ($decisions as $i => $decision) {
            $literal = $decision[Decisions::DECISION_LITERAL];

if ($literal > 0) {
                $package = $pool->literalToPackage($literal);

$this->resultPackages['all'][] = $package;
                if (!isset($this->unlockableMap[$package->id])) {
                    $this->resultPackages['non-dev'][] = $package;
                }
            }
        }
    }

/**
     * @return void
     */
    public function setNonDevPackages(LockTransaction $extractionResult)
    {
        $packages = $extractionResult->getNewLockPackages(false);

$this->resultPackages['dev'] = $this->resultPackages['non-dev'];
        $this->resultPackages['non-dev'] = array();

foreach ($packages as $package) {
            foreach ($this->resultPackages['dev'] as $i => $resultPackage) {
                // TODO this comparison is probably insufficient, aliases, what about modified versions? I guess they aren't possible?
                if ($package->getName() == $resultPackage->getName()) {
                    $this->resultPackages['non-dev'][] = $resultPackage;
                    unset($this->resultPackages['dev'][$i]);
                }
            }
        }
    }

// TODO additionalFixedRepository needs to be looked at here as well?
    /**
     * @param bool $devMode
     * @param bool $updateMirrors
     * @return BasePackage[]
     */
    public function getNewLockPackages($devMode, $updateMirrors = false)
    {
        $packages = array();
        foreach ($this->resultPackages[$devMode ? 'dev' : 'non-dev'] as $package) {
            if (!$package instanceof AliasPackage) {
                // if we're just updating mirrors we need to reset references to the same as currently "present" packages' references to keep the lock file as-is
                // we do not reset references if the currently present package didn't have any, or if the type of VCS has changed
                if ($updateMirrors && !isset($this->presentMap[spl_object_hash($package)])) {
                    foreach ($this->presentMap as $presentPackage) {
                        if ($package->getName() == $presentPackage->getName() && $package->getVersion() == $presentPackage->getVersion()) {
                            if ($presentPackage->getSourceReference() && $presentPackage->getSourceType() === $package->getSourceType()) {
                                $package->setSourceDistReferences($presentPackage->getSourceReference());
                            }
                            if ($presentPackage->getReleaseDate() && $package instanceof Package) {
                                $package->setReleaseDate($presentPackage->getReleaseDate());
                            }
                        }
                    }
                }
                $packages[] = $package;
            }
        }

return $packages;
    }

/**
     * Checks which of the given aliases from composer.json are actually in use for the lock file
     * @param array<array{package: string, version: string, alias: string, alias_normalized: string}> $aliases
     * @return array<array{package: string, version: string, alias: string, alias_normalized: string}>
     */
    public function getAliases($aliases)
    {
        $usedAliases = array();

foreach ($this->resultPackages['all'] as $package) {
            if ($package instanceof AliasPackage) {
                foreach ($aliases as $index => $alias) {
                    if ($alias['package'] === $package->getName()) {
                        $usedAliases[] = $alias;
                        unset($aliases[$index]);
                    }
                }
            }
        }

usort($usedAliases, function ($a, $b) {
            return strcmp($a['package'], $b['package']);
        });

return $usedAliases;
    }
}
<?php

namespace Composer\DependencyResolver;

/**
 * @author Nils Adermann <naderman@naderman.de>
 * @implements \Iterator<RuleSet::TYPE_*, Rule>
 */
class RuleSetIterator implements \Iterator
{
    /** @var array<RuleSet::TYPE_*, Rule[]> */
    protected $rules;
    /** @var array<RuleSet::TYPE_*> */
    protected $types;

/** @var int */
    protected $currentOffset;
    /** @var RuleSet::TYPE_*|-1 */
    protected $currentType;
    /** @var int */
    protected $currentTypeOffset;

/**
     * @param array<RuleSet::TYPE_*, Rule[]> $rules
     */
    public function __construct(array $rules)
    {
        $this->rules = $rules;
        $this->types = array_keys($rules);
        sort($this->types);

$this->rewind();
    }

/**
     * @return Rule
     */
    #[\ReturnTypeWillChange]
    public function current()
    {
        return $this->rules[$this->currentType][$this->currentOffset];
    }

/**
     * @return RuleSet::TYPE_*|-1
     */
    #[\ReturnTypeWillChange]
    public function key()
    {
        return $this->currentType;
    }

/**
     * @return void
     */
    #[\ReturnTypeWillChange]
    public function next()
    {
        $this->currentOffset++;

if (!isset($this->rules[$this->currentType])) {
            return;
        }

if ($this->currentOffset >= \count($this->rules[$this->currentType])) {
            $this->currentOffset = 0;

do {
                $this->currentTypeOffset++;

if (!isset($this->types[$this->currentTypeOffset])) {
                    $this->currentType = -1;
                    break;
                }

$this->currentType = $this->types[$this->currentTypeOffset];
            } while (isset($this->types[$this->currentTypeOffset]) && !\count($this->rules[$this->currentType]));
        }
    }

/**
     * @return void
     */
    #[\ReturnTypeWillChange]
    public function rewind()
    {
        $this->currentOffset = 0;

$this->currentTypeOffset = -1;
        $this->currentType = -1;

do {
            $this->currentTypeOffset++;

if (!isset($this->types[$this->currentTypeOffset])) {
                $this->currentType = -1;
                break;
            }

$this->currentType = $this->types[$this->currentTypeOffset];
        } while (isset($this->types[$this->currentTypeOffset]) && !\count($this->rules[$this->currentType]));
    }

/**
     * @return bool
     */
    #[\ReturnTypeWillChange]
    public function valid()
    {
        return isset($this->rules[$this->currentType], $this->rules[$this->currentType][$this->currentOffset]);
    }
}
<?php

namespace Composer\DependencyResolver;

/**
 * An extension of SplDoublyLinkedList with seek and removal of current element
 *
 * SplDoublyLinkedList only allows deleting a particular offset and has no
 * method to set the internal iterator to a particular offset.
 *
 * @author Nils Adermann <naderman@naderman.de>
 * @extends \SplDoublyLinkedList<RuleWatchNode>
 */
class RuleWatchChain extends \SplDoublyLinkedList
{
    /**
     * Moves the internal iterator to the specified offset
     *
     * @param int $offset The offset to seek to.
     * @return void
     */
    public function seek($offset)
    {
        $this->rewind();
        for ($i = 0; $i < $offset; $i++, $this->next());
    }

/**
     * Removes the current element from the list
     *
     * As SplDoublyLinkedList only allows deleting a particular offset and
     * incorrectly sets the internal iterator if you delete the current value
     * this method sets the internal iterator back to the following element
     * using the seek method.
     *
     * @return void
     */
    public function remove()
    {
        $offset = $this->key();
        $this->offsetUnset($offset);
        $this->seek($offset);
    }
}
<?php

namespace Composer\DependencyResolver;

/**
 * @author Nils Adermann <naderman@naderman.de>
 */
class GenericRule extends Rule
{
    /** @var int[] */
    protected $literals;

/**
     * @param int[] $literals
     */
    public function __construct(array $literals, $reason, $reasonData)
    {
        parent::__construct($reason, $reasonData);

// sort all packages ascending by id
        sort($literals);

$this->literals = $literals;
    }

/**
     * @return int[]
     */
    public function getLiterals()
    {
        return $this->literals;
    }

/**
     * @inheritDoc
     */
    public function getHash()
    {
        $data = unpack('ihash', md5(implode(',', $this->literals), true));

return $data['hash'];
    }

/**
     * Checks if this rule is equal to another one
     *
     * Ignores whether either of the rules is disabled.
     *
     * @param  Rule $rule The rule to check against
     * @return bool Whether the rules are equal
     */
    public function equals(Rule $rule)
    {
        return $this->literals === $rule->getLiterals();
    }

/**
     * @return bool
     */
    public function isAssertion()
    {
        return 1 === \count($this->literals);
    }

foreach ($this->literals as $i => $literal) {
            if ($i != 0) {
                $result .= '|';
            }
            $result .= $literal;
        }

$result .= ')';

return $result;
    }
}
<?php

namespace Composer\DependencyResolver;

/**
 * Stores decisions on installing, removing or keeping packages
 *
 * @author Nils Adermann <naderman@naderman.de>
 * @implements \Iterator<array{0: int, 1: Rule}>
 */
class Decisions implements \Iterator, \Countable
{
    const DECISION_LITERAL = 0;
    const DECISION_REASON = 1;

/** @var Pool */
    protected $pool;
    /** @var array<int, int> */
    protected $decisionMap;
    /**
     * @var array<array{0: int, 1: Rule}>
     */
    protected $decisionQueue = array();

public function __construct(Pool $pool)
    {
        $this->pool = $pool;
        $this->decisionMap = array();
    }

/**
     * @param int $literal
     * @param int $level
     * @return void
     */
    public function decide($literal, $level, Rule $why)
    {
        $this->addDecision($literal, $level);
        $this->decisionQueue[] = array(
            self::DECISION_LITERAL => $literal,
            self::DECISION_REASON => $why,
        );
    }

/**
     * @param int $literal
     * @return bool
     */
    public function satisfy($literal)
    {
        $packageId = abs($literal);

return (
            $literal > 0 && isset($this->decisionMap[$packageId]) && $this->decisionMap[$packageId] > 0 ||
            $literal < 0 && isset($this->decisionMap[$packageId]) && $this->decisionMap[$packageId] < 0
        );
    }

/**
     * @param int $literal
     * @return bool
     */
    public function conflict($literal)
    {
        $packageId = abs($literal);

return (
            (isset($this->decisionMap[$packageId]) && $this->decisionMap[$packageId] > 0 && $literal < 0) ||
            (isset($this->decisionMap[$packageId]) && $this->decisionMap[$packageId] < 0 && $literal > 0)
        );
    }

/**
     * @param int $literalOrPackageId
     * @return bool
     */
    public function decided($literalOrPackageId)
    {
        return !empty($this->decisionMap[abs($literalOrPackageId)]);
    }

/**
     * @param int $literalOrPackageId
     * @return bool
     */
    public function undecided($literalOrPackageId)
    {
        return empty($this->decisionMap[abs($literalOrPackageId)]);
    }

/**
     * @param int $literalOrPackageId
     * @return bool
     */
    public function decidedInstall($literalOrPackageId)
    {
        $packageId = abs($literalOrPackageId);

return isset($this->decisionMap[$packageId]) && $this->decisionMap[$packageId] > 0;
    }

/**
     * @param int $literalOrPackageId
     * @return int
     */
    public function decisionLevel($literalOrPackageId)
    {
        $packageId = abs($literalOrPackageId);
        if (isset($this->decisionMap[$packageId])) {
            return abs($this->decisionMap[$packageId]);
        }

return 0;
    }

/**
     * @param int $literalOrPackageId
     * @return Rule|null
     */
    public function decisionRule($literalOrPackageId)
    {
        $packageId = abs($literalOrPackageId);

foreach ($this->decisionQueue as $decision) {
            if ($packageId === abs($decision[self::DECISION_LITERAL])) {
                return $decision[self::DECISION_REASON];
            }
        }

return null;
    }

/**
     * @param int $queueOffset
     * @return array{0: int, 1: Rule} a literal and decision reason
     */
    public function atOffset($queueOffset)
    {
        return $this->decisionQueue[$queueOffset];
    }

/**
     * @param int $queueOffset
     * @return bool
     */
    public function validOffset($queueOffset)
    {
        return $queueOffset >= 0 && $queueOffset < \count($this->decisionQueue);
    }

/**
     * @return Rule
     */
    public function lastReason()
    {
        return $this->decisionQueue[\count($this->decisionQueue) - 1][self::DECISION_REASON];
    }

/**
     * @return int
     */
    public function lastLiteral()
    {
        return $this->decisionQueue[\count($this->decisionQueue) - 1][self::DECISION_LITERAL];
    }

/**
     * @return void
     */
    public function reset()
    {
        while ($decision = array_pop($this->decisionQueue)) {
            $this->decisionMap[abs($decision[self::DECISION_LITERAL])] = 0;
        }
    }

/**
     * @param int $offset
     * @return void
     */
    public function resetToOffset($offset)
    {
        while (\count($this->decisionQueue) > $offset + 1) {
            $decision = array_pop($this->decisionQueue);
            $this->decisionMap[abs($decision[self::DECISION_LITERAL])] = 0;
        }
    }

/**
     * @return void
     */
    public function revertLast()
    {
        $this->decisionMap[abs($this->lastLiteral())] = 0;
        array_pop($this->decisionQueue);
    }

/**
     * @return int
     */
    #[\ReturnTypeWillChange]
    public function count()
    {
        return \count($this->decisionQueue);
    }

/**
     * @return void
     */
    #[\ReturnTypeWillChange]
    public function rewind()
    {
        end($this->decisionQueue);
    }

/**
     * @return array{0: int, 1: Rule}|false
     */
    #[\ReturnTypeWillChange]
    public function current()
    {
        return current($this->decisionQueue);
    }

/**
     * @return ?int
     */
    #[\ReturnTypeWillChange]
    public function key()
    {
        return key($this->decisionQueue);
    }

/**
     * @return void
     */
    #[\ReturnTypeWillChange]
    public function next()
    {
        prev($this->decisionQueue);
    }

/**
     * @return bool
     */
    #[\ReturnTypeWillChange]
    public function valid()
    {
        return false !== current($this->decisionQueue);
    }

/**
     * @return bool
     */
    public function isEmpty()
    {
        return \count($this->decisionQueue) === 0;
    }

/**
     * @param int $literal
     * @param int $level
     * @return void
     */
    protected function addDecision($literal, $level)
    {
        $packageId = abs($literal);

$previousDecision = isset($this->decisionMap[$packageId]) ? $this->decisionMap[$packageId] : null;
        if ($previousDecision != 0) {
            $literalString = $this->pool->literalToPrettyString($literal, array());
            $package = $this->pool->literalToPackage($literal);
            throw new SolverBugException(
                "Trying to decide $literalString on level $level, even though $package was previously decided as ".(int) $previousDecision."."
            );
        }

if ($literal > 0) {
            $this->decisionMap[$packageId] = $level;
        } else {
            $this->decisionMap[$packageId] = -$level;
        }
    }

/**
     * @return string
     */
    public function toString(Pool $pool = null)
    {
        $decisionMap = $this->decisionMap;
        ksort($decisionMap);
        $str = '[';
        foreach ($decisionMap as $packageId => $level) {
            $str .= (($pool) ? $pool->literalToPackage($packageId) : $packageId).':'.$level.',';
        }
        $str .= ']';

return $str;
    }

public function __toString()
    {
        return $this->toString();
    }
}
<?php

namespace Composer\DependencyResolver;

use Composer\Package\PackageInterface;
use Composer\Semver\Constraint\Constraint;

/**
 * @author Nils Adermann <naderman@naderman.de>
 */
interface PolicyInterface
{
    /**
     * @param  string $operator
     * @return bool
     *
     * @phpstan-param Constraint::STR_OP_* $operator
     */
    public function versionCompare(PackageInterface $a, PackageInterface $b, $operator);

/**
     * @param  int[]   $literals
     * @param  ?string $requiredPackage
     * @return int[]
     */
    public function selectPreferredPackages(Pool $pool, array $literals, $requiredPackage = null);
}
<?php

namespace Composer\DependencyResolver;

/**
 * @author Nils Adermann <naderman@naderman.de>
 */
class SolverBugException extends \RuntimeException
{
    /**
     * @param string $message
     */
    public function __construct($message)
    {
        parent::__construct(
            $message."\nThis exception was most likely caused by a bug in Composer.\n".
            "Please report the command you ran, the exact error you received, and your composer.json on https://github.com/composer/composer/issues - thank you!\n"
        );
    }
}
<?php

namespace Composer\DependencyResolver;

use Composer\EventDispatcher\EventDispatcher;
use Composer\IO\IOInterface;
use Composer\Package\AliasPackage;
use Composer\Package\BasePackage;
use Composer\Package\CompleteAliasPackage;
use Composer\Package\CompletePackage;
use Composer\Package\PackageInterface;
use Composer\Package\Version\StabilityFilter;
use Composer\Pcre\Preg;
use Composer\Plugin\PluginEvents;
use Composer\Plugin\PrePoolCreateEvent;
use Composer\Repository\PlatformRepository;
use Composer\Repository\RepositoryInterface;
use Composer\Repository\RootPackageRepository;
use Composer\Semver\CompilingMatcher;
use Composer\Semver\Constraint\Constraint;
use Composer\Semver\Constraint\ConstraintInterface;
use Composer\Semver\Constraint\MatchAllConstraint;
use Composer\Semver\Constraint\MultiConstraint;
use Composer\Semver\Intervals;

/**
 * @author Nils Adermann <naderman@naderman.de>
 */
class PoolBuilder
{
    /**
     * @var int[]
     * @phpstan-var array<string, BasePackage::STABILITY_*>
     */
    private $acceptableStabilities;
    /**
     * @var int[]
     * @phpstan-var array<string, BasePackage::STABILITY_*>
     */
    private $stabilityFlags;
    /**
     * @var array[]
     * @phpstan-var array<string, array<string, array{alias: string, alias_normalized: string}>>
     */
    private $rootAliases;
    /**
     * @var string[]
     * @phpstan-var array<string, string>
     */
    private $rootReferences;
    /**
     * @var ?EventDispatcher
     */
    private $eventDispatcher;
    /**
     * @var PoolOptimizer|null
     */
    private $poolOptimizer;
    /**
     * @var IOInterface
     */
    private $io;
    /**
     * @var array[]
     * @phpstan-var array<string, AliasPackage[]>
     */
    private $aliasMap = array();
    /**
     * @var ConstraintInterface[]
     * @phpstan-var array<string, ConstraintInterface>
     */
    private $packagesToLoad = array();
    /**
     * @var ConstraintInterface[]
     * @phpstan-var array<string, ConstraintInterface>
     */
    private $loadedPackages = array();
    /**
     * @var array[]
     * @phpstan-var array<int, array<string, array<string, PackageInterface>>>
     */
    private $loadedPerRepo = array();
    /**
     * @var BasePackage[]
     */
    private $packages = array();
    /**
     * @var BasePackage[]
     */
    private $unacceptableFixedOrLockedPackages = array();
    /** @var string[] */
    private $updateAllowList = array();
    /** @var array<string, array<PackageInterface>> */
    private $skippedLoad = array();

/**
     * Keeps a list of dependencies which are locked but were auto-unlocked as they are path repositories
     *
     * This half-unlocked state means the package itself will update but the UPDATE_LISTED_WITH_TRANSITIVE_DEPS*
     * flags will not apply until the package really gets unlocked in some other way than being a path repo
     *
     * @var array<string, true>
     */
    private $pathRepoUnlocked = array();

/**
     * Keeps a list of dependencies which are root requirements, and as such
     * have already their maximum required range loaded and can not be
     * extended by markPackageNameForLoading
     *
     * Packages get cleared from this list if they get unlocked as in that case
     * we need to actually load them
     *
     * @var array<string, true>
     */
    private $maxExtendedReqs = array();
    /**
     * @var array
     * @phpstan-var array<string, bool>
     */
    private $updateAllowWarned = array();

/** @var int */
    private $indexCounter = 0;

/**
     * @param int[] $acceptableStabilities array of stability => BasePackage::STABILITY_* value
     * @phpstan-param array<string, BasePackage::STABILITY_*> $acceptableStabilities
     * @param int[] $stabilityFlags an array of package name => BasePackage::STABILITY_* value
     * @phpstan-param array<string, BasePackage::STABILITY_*> $stabilityFlags
     * @param array[] $rootAliases
     * @phpstan-param array<string, array<string, array{alias: string, alias_normalized: string}>> $rootAliases
     * @param string[] $rootReferences an array of package name => source reference
     * @phpstan-param array<string, string> $rootReferences
     */
    public function __construct(array $acceptableStabilities, array $stabilityFlags, array $rootAliases, array $rootReferences, IOInterface $io, EventDispatcher $eventDispatcher = null, PoolOptimizer $poolOptimizer = null)
    {
        $this->acceptableStabilities = $acceptableStabilities;
        $this->stabilityFlags = $stabilityFlags;
        $this->rootAliases = $rootAliases;
        $this->rootReferences = $rootReferences;
        $this->eventDispatcher = $eventDispatcher;
        $this->poolOptimizer = $poolOptimizer;
        $this->io = $io;
    }

/**
     * @param RepositoryInterface[] $repositories
     * @return Pool
     */
    public function buildPool(array $repositories, Request $request)
    {
        if ($request->getUpdateAllowList()) {
            $this->updateAllowList = $request->getUpdateAllowList();
            $this->warnAboutNonMatchingUpdateAllowList($request);

foreach ($request->getLockedRepository()->getPackages() as $lockedPackage) {
                if (!$this->isUpdateAllowed($lockedPackage)) {
                    // remember which packages we skipped loading remote content for in this partial update
                    $this->skippedLoad[$lockedPackage->getName()][] = $lockedPackage;
                    foreach ($lockedPackage->getReplaces() as $link) {
                        $this->skippedLoad[$link->getTarget()][] = $lockedPackage;
                    }

// Path repo packages are never loaded from lock, to force them to always remain in sync
                    // unless symlinking is disabled in which case we probably should rather treat them like
                    // regular packages. We mark them specially so they can be reloaded fully including update propagation
                    // if they do get unlocked, but by default they are unlocked without update propagation.
                    if ($lockedPackage->getDistType() === 'path') {
                        $transportOptions = $lockedPackage->getTransportOptions();
                        if (!isset($transportOptions['symlink']) || $transportOptions['symlink'] !== false) {
                            $this->pathRepoUnlocked[$lockedPackage->getName()] = true;
                            continue;
                        }
                    }

$request->lockPackage($lockedPackage);
                }
            }
        }

foreach ($request->getFixedOrLockedPackages() as $package) {
            // using MatchAllConstraint here because fixed packages do not need to retrigger
            // loading any packages
            $this->loadedPackages[$package->getName()] = new MatchAllConstraint();

// replace means conflict, so if a fixed package replaces a name, no need to load that one, packages would conflict anyways
            foreach ($package->getReplaces() as $link) {
                $this->loadedPackages[$link->getTarget()] = new MatchAllConstraint();
            }

// TODO in how far can we do the above for conflicts? It's more tricky cause conflicts can be limited to
            // specific versions while replace is a conflict with all versions of the name

if (
                $package->getRepository() instanceof RootPackageRepository
                || $package->getRepository() instanceof PlatformRepository
                || StabilityFilter::isPackageAcceptable($this->acceptableStabilities, $this->stabilityFlags, $package->getNames(), $package->getStability())
            ) {
                $this->loadPackage($request, $repositories, $package, false);
            } else {
                $this->unacceptableFixedOrLockedPackages[] = $package;
            }
        }

foreach ($request->getRequires() as $packageName => $constraint) {
            // fixed and locked packages have already been added, so if a root require needs one of them, no need to do anything
            if (isset($this->loadedPackages[$packageName])) {
                continue;
            }

$this->packagesToLoad[$packageName] = $constraint;
            $this->maxExtendedReqs[$packageName] = true;
        }

// clean up packagesToLoad for anything we manually marked loaded above
        foreach ($this->packagesToLoad as $name => $constraint) {
            if (isset($this->loadedPackages[$name])) {
                unset($this->packagesToLoad[$name]);
            }
        }

while (!empty($this->packagesToLoad)) {
            $this->loadPackagesMarkedForLoading($request, $repositories);
        }

foreach ($this->packages as $i => $package) {
            // we check all alias related packages at once, so no need to check individual aliases
            // isset also checks non-null value
            if (!$package instanceof AliasPackage) {
                $constraint = new Constraint('==', $package->getVersion());
                $aliasedPackages = array($i => $package);
                if (isset($this->aliasMap[spl_object_hash($package)])) {
                    $aliasedPackages += $this->aliasMap[spl_object_hash($package)];
                }

$found = false;
                foreach ($aliasedPackages as $packageOrAlias) {
                    if (CompilingMatcher::match($constraint, Constraint::OP_EQ, $packageOrAlias->getVersion())) {
                        $found = true;
                    }
                }
                if (!$found) {
                    foreach ($aliasedPackages as $index => $packageOrAlias) {
                        unset($this->packages[$index]);
                    }
                }
            }
        }

if ($this->eventDispatcher) {
            $prePoolCreateEvent = new PrePoolCreateEvent(
                PluginEvents::PRE_POOL_CREATE,
                $repositories,
                $request,
                $this->acceptableStabilities,
                $this->stabilityFlags,
                $this->rootAliases,
                $this->rootReferences,
                $this->packages,
                $this->unacceptableFixedOrLockedPackages
            );
            $this->eventDispatcher->dispatch($prePoolCreateEvent->getName(), $prePoolCreateEvent);
            $this->packages = $prePoolCreateEvent->getPackages();
            $this->unacceptableFixedOrLockedPackages = $prePoolCreateEvent->getUnacceptableFixedPackages();
        }

$pool = new Pool($this->packages, $this->unacceptableFixedOrLockedPackages);

$this->aliasMap = array();
        $this->packagesToLoad = array();
        $this->loadedPackages = array();
        $this->loadedPerRepo = array();
        $this->packages = array();
        $this->unacceptableFixedOrLockedPackages = array();
        $this->maxExtendedReqs = array();
        $this->skippedLoad = array();
        $this->indexCounter = 0;

$pool = $this->runOptimizer($request, $pool);

Intervals::clear();

return $pool;
    }

/**
     * @param string $name
     * @return void
     */
    private function markPackageNameForLoading(Request $request, $name, ConstraintInterface $constraint)
    {
        // Skip platform requires at this stage
        if (PlatformRepository::isPlatformPackage($name)) {
            return;
        }

// Root require (which was not unlocked) already loaded the maximum range so no
        // need to check anything here
        if (isset($this->maxExtendedReqs[$name])) {
            return;
        }

// Root requires can not be overruled by dependencies so there is no point in
        // extending the loaded constraint for those.
        // This is triggered when loading a root require which was locked but got unlocked, then
        // we make sure that we load at most the intervals covered by the root constraint.
        $rootRequires = $request->getRequires();
        if (isset($rootRequires[$name]) && !Intervals::isSubsetOf($constraint, $rootRequires[$name])) {
            $constraint = $rootRequires[$name];
        }

// Not yet loaded or already marked for a reload, set the constraint to be loaded
        if (!isset($this->loadedPackages[$name])) {
            // Maybe it was already marked before but not loaded yet. In that case
            // we have to extend the constraint (we don't check if they are identical because
            // MultiConstraint::create() will optimize anyway)
            if (isset($this->packagesToLoad[$name])) {
                // Already marked for loading and this does not expand the constraint to be loaded, nothing to do
                if (Intervals::isSubsetOf($constraint, $this->packagesToLoad[$name])) {
                    return;
                }

// extend the constraint to be loaded
                $constraint = Intervals::compactConstraint(MultiConstraint::create(array($this->packagesToLoad[$name], $constraint), false));
            }

$this->packagesToLoad[$name] = $constraint;

return;
        }

// No need to load this package with this constraint because it is
        // a subset of the constraint with which we have already loaded packages
        if (Intervals::isSubsetOf($constraint, $this->loadedPackages[$name])) {
            return;
        }

// We have already loaded that package but not in the constraint that's
        // required. We extend the constraint and mark that package as not being loaded
        // yet so we get the required package versions
        $this->packagesToLoad[$name] = Intervals::compactConstraint(MultiConstraint::create(array($this->loadedPackages[$name], $constraint), false));
        unset($this->loadedPackages[$name]);
    }

/**
     * @param RepositoryInterface[] $repositories
     * @return void
     */
    private function loadPackagesMarkedForLoading(Request $request, array $repositories)
    {
        foreach ($this->packagesToLoad as $name => $constraint) {
            $this->loadedPackages[$name] = $constraint;
        }

$packageBatch = $this->packagesToLoad;
        $this->packagesToLoad = array();

foreach ($repositories as $repoIndex => $repository) {
            if (empty($packageBatch)) {
                break;
            }

// these repos have their packages fixed or locked if they need to be loaded so we
            // never need to load anything else from them
            if ($repository instanceof PlatformRepository || $repository === $request->getLockedRepository()) {
                continue;
            }
            $result = $repository->loadPackages($packageBatch, $this->acceptableStabilities, $this->stabilityFlags, isset($this->loadedPerRepo[$repoIndex]) ? $this->loadedPerRepo[$repoIndex] : array());

foreach ($result['namesFound'] as $name) {
                // avoid loading the same package again from other repositories once it has been found
                unset($packageBatch[$name]);
            }
            foreach ($result['packages'] as $package) {
                $this->loadedPerRepo[$repoIndex][$package->getName()][$package->getVersion()] = $package;
                $this->loadPackage($request, $repositories, $package, !isset($this->pathRepoUnlocked[$package->getName()]));
            }
        }
    }

/**
     * @param bool $propagateUpdate
     * @param RepositoryInterface[] $repositories
     * @return void
     */
    private function loadPackage(Request $request, array $repositories, BasePackage $package, $propagateUpdate)
    {
        $index = $this->indexCounter++;
        $this->packages[$index] = $package;

if ($package instanceof AliasPackage) {
            $this->aliasMap[spl_object_hash($package->getAliasOf())][$index] = $package;
        }

$name = $package->getName();

// we're simply setting the root references on all versions for a name here and rely on the solver to pick the
        // right version. It'd be more work to figure out which versions and which aliases of those versions this may
        // apply to
        if (isset($this->rootReferences[$name])) {
            // do not modify the references on already locked or fixed packages
            if (!$request->isLockedPackage($package) && !$request->isFixedPackage($package)) {
                $package->setSourceDistReferences($this->rootReferences[$name]);
            }
        }

// if propagateUpdate is false we are loading a fixed or locked package, root aliases do not apply as they are
        // manually loaded as separate packages in this case
        if ($propagateUpdate && isset($this->rootAliases[$name][$package->getVersion()])) {
            $alias = $this->rootAliases[$name][$package->getVersion()];
            if ($package instanceof AliasPackage) {
                $basePackage = $package->getAliasOf();
            } else {
                $basePackage = $package;
            }
            if ($basePackage instanceof CompletePackage) {
                $aliasPackage = new CompleteAliasPackage($basePackage, $alias['alias_normalized'], $alias['alias']);
            } else {
                $aliasPackage = new AliasPackage($basePackage, $alias['alias_normalized'], $alias['alias']);
            }
            $aliasPackage->setRootPackageAlias(true);

$newIndex = $this->indexCounter++;
            $this->packages[$newIndex] = $aliasPackage;
            $this->aliasMap[spl_object_hash($aliasPackage->getAliasOf())][$newIndex] = $aliasPackage;
        }

foreach ($package->getRequires() as $link) {
            $require = $link->getTarget();
            $linkConstraint = $link->getConstraint();

// if the required package is loaded as a locked package only and hasn't had its deps analyzed
            if (isset($this->skippedLoad[$require])) {
                // if we're doing a full update or this is a partial update with transitive deps and we're currently
                // looking at a package which needs to be updated we need to unlock the package we now know is a
                // dependency of another package which we are trying to update, and then attempt to load it again
                if ($propagateUpdate && $request->getUpdateAllowTransitiveDependencies()) {
                    $skippedRootRequires = $this->getSkippedRootRequires($request, $require);

if ($request->getUpdateAllowTransitiveRootDependencies() || !$skippedRootRequires) {
                        $this->unlockPackage($request, $repositories, $require);
                        $this->markPackageNameForLoading($request, $require, $linkConstraint);
                    } else {
                        foreach ($skippedRootRequires as $rootRequire) {
                            if (!isset($this->updateAllowWarned[$rootRequire])) {
                                $this->updateAllowWarned[$rootRequire] = true;
                                $this->io->writeError('<warning>Dependency '.$rootRequire.' is also a root requirement. Package has not been listed as an update argument, so keeping locked at old version. Use --with-all-dependencies (-W) to include root dependencies.</warning>');
                            }
                        }
                    }
                } elseif (isset($this->pathRepoUnlocked[$require]) && !isset($this->loadedPackages[$require])) {
                    // if doing a partial update and a package depends on a path-repo-unlocked package which is not referenced by the root, we need to ensure it gets loaded as it was not loaded by the request's root requirements
                    // and would not be loaded above if update propagation is not allowed (which happens if the requirer is itself a path-repo-unlocked package) or if transitive deps are not allowed to be unlocked
                    $this->markPackageNameForLoading($request, $require, $linkConstraint);
                }
            } else {
                $this->markPackageNameForLoading($request, $require, $linkConstraint);
            }
        }

// if we're doing a partial update with deps we also need to unlock packages which are being replaced in case
        // they are currently locked and thus prevent this updateable package from being installable/updateable
        if ($propagateUpdate && $request->getUpdateAllowTransitiveDependencies()) {
            foreach ($package->getReplaces() as $link) {
                $replace = $link->getTarget();
                if (isset($this->loadedPackages[$replace], $this->skippedLoad[$replace])) {
                    $skippedRootRequires = $this->getSkippedRootRequires($request, $replace);

if ($request->getUpdateAllowTransitiveRootDependencies() || !$skippedRootRequires) {
                        $this->unlockPackage($request, $repositories, $replace);
                        $this->markPackageNameForLoading($request, $replace, $link->getConstraint());
                    } else {
                        foreach ($skippedRootRequires as $rootRequire) {
                            if (!isset($this->updateAllowWarned[$rootRequire])) {
                                $this->updateAllowWarned[$rootRequire] = true;
                                $this->io->writeError('<warning>Dependency '.$rootRequire.' is also a root requirement. Package has not been listed as an update argument, so keeping locked at old version. Use --with-all-dependencies (-W) to include root dependencies.</warning>');
                            }
                        }
                    }
                }
            }
        }
    }

/**
     * Checks if a particular name is required directly in the request
     *
     * @param string $name packageName
     * @return bool
     */
    private function isRootRequire(Request $request, $name)
    {
        $rootRequires = $request->getRequires();

return isset($rootRequires[$name]);
    }

/**
     * @param  string $name
     * @return string[]
     */
    private function getSkippedRootRequires(Request $request, $name)
    {
        if (!isset($this->skippedLoad[$name])) {
            return array();
        }

$rootRequires = $request->getRequires();
        $matches = array();

if (isset($rootRequires[$name])) {
            return array_map(function (PackageInterface $package) use ($name) {
                if ($name !== $package->getName()) {
                    return $package->getName() .' (via replace of '.$name.')';
                }

return $package->getName();
            }, $this->skippedLoad[$name]);
        }

foreach ($this->skippedLoad[$name] as $packageOrReplacer) {
            if (isset($rootRequires[$packageOrReplacer->getName()])) {
                $matches[] = $packageOrReplacer->getName();
            }
            foreach ($packageOrReplacer->getReplaces() as $link) {
                if (isset($rootRequires[$link->getTarget()])) {
                    if ($name !== $packageOrReplacer->getName()) {
                        $matches[] = $packageOrReplacer->getName() .' (via replace of '.$name.')';
                    } else {
                        $matches[] = $packageOrReplacer->getName();
                    }
                    break;
                }
            }
        }

return $matches;
    }

/**
     * Checks whether the update allow list allows this package in the lock file to be updated
     *
     * @return bool
     */
    private function isUpdateAllowed(BasePackage $package)
    {
        foreach ($this->updateAllowList as $pattern => $void) {
            $patternRegexp = BasePackage::packageNameToRegexp($pattern);
            if (Preg::isMatch($patternRegexp, $package->getName())) {
                return true;
            }
        }

return false;
    }

/**
     * @return void
     */
    private function warnAboutNonMatchingUpdateAllowList(Request $request)
    {
        foreach ($this->updateAllowList as $pattern => $void) {
            $patternRegexp = BasePackage::packageNameToRegexp($pattern);
            // update pattern matches a locked package? => all good
            foreach ($request->getLockedRepository()->getPackages() as $package) {
                if (Preg::isMatch($patternRegexp, $package->getName())) {
                    continue 2;
                }
            }
            // update pattern matches a root require? => all good, probably a new package
            foreach ($request->getRequires() as $packageName => $constraint) {
                if (Preg::isMatch($patternRegexp, $packageName)) {
                    continue 2;
                }
            }
            if (strpos($pattern, '*') !== false) {
                $this->io->writeError('<warning>Pattern "' . $pattern . '" listed for update does not match any locked packages.</warning>');
            } else {
                $this->io->writeError('<warning>Package "' . $pattern . '" listed for update is not locked.</warning>');
            }
        }
    }

/**
     * Reverts the decision to use a locked package if a partial update with transitive dependencies
     * found that this package actually needs to be updated
     *
     * @param RepositoryInterface[] $repositories
     * @param string $name
     * @return void
     */
    private function unlockPackage(Request $request, array $repositories, $name)
    {
        foreach ($this->skippedLoad[$name] as $packageOrReplacer) {
            // if we unfixed a replaced package name, we also need to unfix the replacer itself
            // as long as it was not unfixed yet
            if ($packageOrReplacer->getName() !== $name && isset($this->skippedLoad[$packageOrReplacer->getName()])) {
                $replacerName = $packageOrReplacer->getName();
                if ($request->getUpdateAllowTransitiveRootDependencies() || (!$this->isRootRequire($request, $name) && !$this->isRootRequire($request, $replacerName))) {
                    $this->unlockPackage($request, $repositories, $replacerName);

if ($this->isRootRequire($request, $replacerName)) {
                        $this->markPackageNameForLoading($request, $replacerName, new MatchAllConstraint);
                    } else {
                        foreach ($this->packages as $loadedPackage) {
                            $requires = $loadedPackage->getRequires();
                            if (isset($requires[$replacerName])) {
                                $this->markPackageNameForLoading($request, $replacerName, $requires[$replacerName]->getConstraint());
                            }
                        }
                    }
                }
            }
        }

if (isset($this->pathRepoUnlocked[$name])) {
            foreach ($this->packages as $index => $package) {
                if ($package->getName() === $name) {
                    $this->removeLoadedPackage($request, $repositories, $package, $index);
                }
            }
        }

unset($this->skippedLoad[$name], $this->loadedPackages[$name], $this->maxExtendedReqs[$name], $this->pathRepoUnlocked[$name]);

// remove locked package by this name which was already initialized
        foreach ($request->getLockedPackages() as $lockedPackage) {
            if (!($lockedPackage instanceof AliasPackage) && $lockedPackage->getName() === $name) {
                if (false !== $index = array_search($lockedPackage, $this->packages, true)) {
                    $request->unlockPackage($lockedPackage);
                    $this->removeLoadedPackage($request, $repositories, $lockedPackage, $index);

// make sure that any requirements for this package by other locked or fixed packages are now
                    // also loaded, as they were previously ignored because the locked (now unlocked) package already
                    // satisfied their requirements
                    foreach ($request->getFixedOrLockedPackages() as $fixedOrLockedPackage) {
                        if ($fixedOrLockedPackage === $lockedPackage) {
                            continue;
                        }

if (isset($this->skippedLoad[$fixedOrLockedPackage->getName()])) {
                            $requires = $fixedOrLockedPackage->getRequires();
                            if (isset($requires[$lockedPackage->getName()])) {
                                $this->markPackageNameForLoading($request, $lockedPackage->getName(), $requires[$lockedPackage->getName()]->getConstraint());
                            }
                        }
                    }
                }
            }
        }
    }

/**
     * @param RepositoryInterface[] $repositories
     * @param int $index
     * @return void
     */
    private function removeLoadedPackage(Request $request, array $repositories, BasePackage $package, $index)
    {
        $repoIndex = array_search($package->getRepository(), $repositories, true);

unset($this->loadedPerRepo[$repoIndex][$package->getName()][$package->getVersion()]);
        unset($this->packages[$index]);
        if (isset($this->aliasMap[spl_object_hash($package)])) {
            foreach ($this->aliasMap[spl_object_hash($package)] as $aliasIndex => $aliasPackage) {
                unset($this->loadedPerRepo[$repoIndex][$aliasPackage->getName()][$aliasPackage->getVersion()]);
                unset($this->packages[$aliasIndex]);
            }
            unset($this->aliasMap[spl_object_hash($package)]);
        }
    }

/**
     * @return Pool
     */
    private function runOptimizer(Request $request, Pool $pool)
    {
        if (null === $this->poolOptimizer) {
            return $pool;
        }

$total = \count($pool->getPackages());

$pool = $this->poolOptimizer->optimize($request, $pool);

$filtered = $total - \count($pool->getPackages());

if (0 === $filtered) {
            return $pool;
        }

$this->io->write(sprintf(
            '<info>Found %s package versions referenced in your dependency graph. %s (%d%%) were optimized away.</info>',
            number_format($total),
            number_format($filtered),
            round(100/$total*$filtered)
        ), true, IOInterface::VERY_VERBOSE);

return $pool;
    }
}
<?php

namespace Composer\DependencyResolver;

use Composer\Package\CompletePackageInterface;
use Composer\Package\AliasPackage;
use Composer\Package\BasePackage;
use Composer\Package\Link;
use Composer\Package\PackageInterface;
use Composer\Package\RootPackageInterface;
use Composer\Pcre\Preg;
use Composer\Repository\RepositorySet;
use Composer\Repository\LockArrayRepository;
use Composer\Semver\Constraint\Constraint;
use Composer\Semver\Constraint\ConstraintInterface;
use Composer\Package\Version\VersionParser;
use Composer\Repository\PlatformRepository;

/**
 * Represents a problem detected while solving dependencies
 *
 * @author Nils Adermann <naderman@naderman.de>
 */
class Problem
{
    /**
     * A map containing the id of each rule part of this problem as a key
     * @var array<string, true>
     */
    protected $reasonSeen;

/**
     * A set of reasons for the problem, each is a rule or a root require and a rule
     * @var array<int, array<int, Rule>>
     */
    protected $reasons = array();

/** @var int */
    protected $section = 0;

/**
     * Add a rule as a reason
     *
     * @param Rule $rule A rule which is a reason for this problem
     * @return void
     */
    public function addRule(Rule $rule)
    {
        $this->addReason(spl_object_hash($rule), $rule);
    }

/**
     * Retrieve all reasons for this problem
     *
     * @return array<int, array<int, Rule>> The problem's reasons
     */
    public function getReasons()
    {
        return $this->reasons;
    }

/**
     * A human readable textual representation of the problem's reasons
     *
     * @param bool $isVerbose
     * @param array<int|string, BasePackage> $installedMap A map of all present packages
     * @param array<Rule[]> $learnedPool
     * @return string
     */
    public function getPrettyString(RepositorySet $repositorySet, Request $request, Pool $pool, $isVerbose, array $installedMap = array(), array $learnedPool = array())
    {
        // TODO doesn't this entirely defeat the purpose of the problem sections? what's the point of sections?
        $reasons = call_user_func_array('array_merge', array_reverse($this->reasons));

if (count($reasons) === 1) {
            reset($reasons);
            $rule = current($reasons);

if (!in_array($rule->getReason(), array(Rule::RULE_ROOT_REQUIRE, Rule::RULE_FIXED), true)) {
                throw new \LogicException("Single reason problems must contain a request rule.");
            }

$reasonData = $rule->getReasonData();
            $packageName = $reasonData['packageName'];
            $constraint = $reasonData['constraint'];

if (isset($constraint)) {
                $packages = $pool->whatProvides($packageName, $constraint);
            } else {
                $packages = array();
            }

if (empty($packages)) {
                return "\n    ".implode(self::getMissingPackageReason($repositorySet, $request, $pool, $isVerbose, $packageName, $constraint));
            }
        }

return self::formatDeduplicatedRules($reasons, '    ', $repositorySet, $request, $pool, $isVerbose, $installedMap, $learnedPool);
    }

/**
     * @param Rule[] $rules
     * @param string $indent
     * @param bool $isVerbose
     * @param array<int|string, BasePackage> $installedMap A map of all present packages
     * @param array<Rule[]> $learnedPool
     * @return string
     * @internal
     */
    public static function formatDeduplicatedRules($rules, $indent, RepositorySet $repositorySet, Request $request, Pool $pool, $isVerbose, array $installedMap = array(), array $learnedPool = array())
    {
        $messages = array();
        $templates = array();
        $parser = new VersionParser;
        $deduplicatableRuleTypes = array(Rule::RULE_PACKAGE_REQUIRES, Rule::RULE_PACKAGE_CONFLICT);
        foreach ($rules as $rule) {
            $message = $rule->getPrettyString($repositorySet, $request, $pool, $isVerbose, $installedMap, $learnedPool);
            if (in_array($rule->getReason(), $deduplicatableRuleTypes, true) && Preg::isMatch('{^(?P<package>\S+) (?P<version>\S+) (?P<type>requires|conflicts)}', $message, $m)) {
                $template = Preg::replace('{^\S+ \S+ }', '%s%s ', $message);
                $messages[] = $template;
                $templates[$template][$m[1]][$parser->normalize($m[2])] = $m[2];
                $sourcePackage = $rule->getSourcePackage($pool);
                foreach ($pool->getRemovedVersionsByPackage(spl_object_hash($sourcePackage)) as $version => $prettyVersion) {
                    $templates[$template][$m[1]][$version] = $prettyVersion;
                }
            } elseif ($message !== '') {
                $messages[] = $message;
            }
        }

$result = array();
        foreach (array_unique($messages) as $message) {
            if (isset($templates[$message])) {
                foreach ($templates[$message] as $package => $versions) {
                    uksort($versions, 'version_compare');
                    if (!$isVerbose) {
                        $versions = self::condenseVersionList($versions, 1);
                    }
                    if (count($versions) > 1) {
                        // remove the s from requires/conflicts to correct grammar
                        $message = Preg::replace('{^(%s%s (?:require|conflict))s}', '$1', $message);
                        $result[] = sprintf($message, $package, '['.implode(', ', $versions).']');
                    } else {
                        $result[] = sprintf($message, $package, ' '.reset($versions));
                    }
                }
            } else {
                $result[] = $message;
            }
        }

return "\n$indent- ".implode("\n$indent- ", $result);
    }

/**
     * @return bool
     */
    public function isCausedByLock(RepositorySet $repositorySet, Request $request, Pool $pool)
    {
        foreach ($this->reasons as $sectionRules) {
            foreach ($sectionRules as $rule) {
                if ($rule->isCausedByLock($repositorySet, $request, $pool)) {
                    return true;
                }
            }
        }

return false;
    }

/**
     * Store a reason descriptor but ignore duplicates
     *
     * @param string $id     A canonical identifier for the reason
     * @param Rule   $reason The reason descriptor
     * @return void
     */
    protected function addReason($id, Rule $reason)
    {
        // TODO: if a rule is part of a problem description in two sections, isn't this going to remove a message
        // that is important to understand the issue?

if (!isset($this->reasonSeen[$id])) {
            $this->reasonSeen[$id] = true;
            $this->reasons[$this->section][] = $reason;
        }
    }

/**
     * @return void
     */
    public function nextSection()
    {
        $this->section++;
    }

/**
     * @internal
     * @param bool $isVerbose
     * @param string $packageName
     * @return array{0: string, 1: string}
     */
    public static function getMissingPackageReason(RepositorySet $repositorySet, Request $request, Pool $pool, $isVerbose, $packageName, ConstraintInterface $constraint = null)
    {
        if (PlatformRepository::isPlatformPackage($packageName)) {
            // handle php/php-*/hhvm
            if (0 === stripos($packageName, 'php') || $packageName === 'hhvm') {
                $version = self::getPlatformPackageVersion($pool, $packageName, phpversion());

$msg = "- Root composer.json requires ".$packageName.self::constraintToText($constraint).' but ';

if (defined('HHVM_VERSION') || ($packageName === 'hhvm' && count($pool->whatProvides($packageName)) > 0)) {
                    return array($msg, 'your HHVM version does not satisfy that requirement.');
                }

if ($packageName === 'hhvm') {
                    return array($msg, 'HHVM was not detected on this machine, make sure it is in your PATH.');
                }

if (null === $version) {
                    return array($msg, 'the '.$packageName.' package is disabled by your platform config. Enable it again with "composer config platform.'.$packageName.' --unset".');
                }

return array($msg, 'your '.$packageName.' version ('. $version .') does not satisfy that requirement.');
            }

// handle php extensions
            if (0 === stripos($packageName, 'ext-')) {
                if (false !== strpos($packageName, ' ')) {
                    return array('- ', "PHP extension ".$packageName.' should be required as '.str_replace(' ', '-', $packageName).'.');
                }

$ext = substr($packageName, 4);
                $msg = "- Root composer.json requires PHP extension ".$packageName.self::constraintToText($constraint).' but ';

$version = self::getPlatformPackageVersion($pool, $packageName, phpversion($ext) ?: '0');
                if (null === $version) {
                    if (extension_loaded($ext)) {
                        return array(
                            $msg,
                            'the '.$packageName.' package is disabled by your platform config. Enable it again with "composer config platform.'.$packageName.' --unset".',
                        );
                    }

return array($msg, 'it is missing from your system. Install or enable PHP\'s '.$ext.' extension.');
                }

return array($msg, 'it has the wrong version installed ('.$version.').');
            }

// handle linked libs
            if (0 === stripos($packageName, 'lib-')) {
                if (strtolower($packageName) === 'lib-icu') {
                    $error = extension_loaded('intl') ? 'it has the wrong version installed, try upgrading the intl extension.' : 'it is missing from your system, make sure the intl extension is loaded.';

return array("- Root composer.json requires linked library ".$packageName.self::constraintToText($constraint).' but ', $error);
                }

return array("- Root composer.json requires linked library ".$packageName.self::constraintToText($constraint).' but ', 'it has the wrong version installed or is missing from your system, make sure to load the extension providing it.');
            }
        }

$lockedPackage = null;
        foreach ($request->getLockedPackages() as $package) {
            if ($package->getName() === $packageName) {
                $lockedPackage = $package;
                if ($pool->isUnacceptableFixedOrLockedPackage($package)) {
                    return array("- ", $package->getPrettyName().' is fixed to '.$package->getPrettyVersion().' (lock file version) by a partial update but that version is rejected by your minimum-stability. Make sure you list it as an argument for the update command.');
                }
                break;
            }
        }

// first check if the actual requested package is found in normal conditions
        // if so it must mean it is rejected by another constraint than the one given here
        if ($packages = $repositorySet->findPackages($packageName, $constraint)) {
            $rootReqs = $repositorySet->getRootRequires();
            if (isset($rootReqs[$packageName])) {
                $filtered = array_filter($packages, function ($p) use ($rootReqs, $packageName) {
                    return $rootReqs[$packageName]->matches(new Constraint('==', $p->getVersion()));
                });
                if (0 === count($filtered)) {
                    return array("- Root composer.json requires $packageName".self::constraintToText($constraint) . ', ', 'found '.self::getPackageList($packages, $isVerbose, $pool, $constraint).' but '.(self::hasMultipleNames($packages) ? 'these conflict' : 'it conflicts').' with your root composer.json require ('.$rootReqs[$packageName]->getPrettyString().').');
                }
            }

if ($lockedPackage) {
                $fixedConstraint = new Constraint('==', $lockedPackage->getVersion());
                $filtered = array_filter($packages, function ($p) use ($fixedConstraint) {
                    return $fixedConstraint->matches(new Constraint('==', $p->getVersion()));
                });
                if (0 === count($filtered)) {
                    return array("- Root composer.json requires $packageName".self::constraintToText($constraint) . ', ', 'found '.self::getPackageList($packages, $isVerbose, $pool, $constraint).' but the package is fixed to '.$lockedPackage->getPrettyVersion().' (lock file version) by a partial update and that version does not match. Make sure you list it as an argument for the update command.');
                }
            }

$nonLockedPackages = array_filter($packages, function ($p) {
                return !$p->getRepository() instanceof LockArrayRepository;
            });

if (!$nonLockedPackages) {
                return array("- Root composer.json requires $packageName".self::constraintToText($constraint) . ', ', 'found '.self::getPackageList($packages, $isVerbose, $pool, $constraint).' in the lock file but not in remote repositories, make sure you avoid updating this package to keep the one from the lock file.');
            }

return array("- Root composer.json requires $packageName".self::constraintToText($constraint) . ', ', 'found '.self::getPackageList($packages, $isVerbose, $pool, $constraint).' but these were not loaded, likely because '.(self::hasMultipleNames($packages) ? 'they conflict' : 'it conflicts').' with another require.');
        }

// check if the package is found when bypassing stability checks
        if ($packages = $repositorySet->findPackages($packageName, $constraint, RepositorySet::ALLOW_UNACCEPTABLE_STABILITIES)) {
            // we must first verify if a valid package would be found in a lower priority repository
            if ($allReposPackages = $repositorySet->findPackages($packageName, $constraint, RepositorySet::ALLOW_SHADOWED_REPOSITORIES)) {
                return self::computeCheckForLowerPrioRepo($pool, $isVerbose, $packageName, $packages, $allReposPackages, 'minimum-stability', $constraint);
            }

return array("- Root composer.json requires $packageName".self::constraintToText($constraint) . ', ', 'found '.self::getPackageList($packages, $isVerbose, $pool, $constraint).' but '.(self::hasMultipleNames($packages) ? 'these do' : 'it does').' not match your minimum-stability.');
        }

// check if the package is found when bypassing the constraint and stability checks
        if ($packages = $repositorySet->findPackages($packageName, null, RepositorySet::ALLOW_UNACCEPTABLE_STABILITIES)) {
            // we must first verify if a valid package would be found in a lower priority repository
            if ($allReposPackages = $repositorySet->findPackages($packageName, $constraint, RepositorySet::ALLOW_SHADOWED_REPOSITORIES)) {
                return self::computeCheckForLowerPrioRepo($pool, $isVerbose, $packageName, $packages, $allReposPackages, 'constraint', $constraint);
            }

$suffix = '';
            if ($constraint instanceof Constraint && $constraint->getVersion() === 'dev-master') {
                foreach ($packages as $candidate) {
                    if (in_array($candidate->getVersion(), array('dev-default', 'dev-main'), true)) {
                        $suffix = ' Perhaps dev-master was renamed to '.$candidate->getPrettyVersion().'?';
                        break;
                    }
                }
            }

// check if the root package is a name match and hint the dependencies on root troubleshooting article
            $allReposPackages = $packages;
            $topPackage = reset($allReposPackages);
            if ($topPackage instanceof RootPackageInterface) {
                $suffix = ' See https://getcomposer.org/dep-on-root for details and assistance.';
            }

return array("- Root composer.json requires $packageName".self::constraintToText($constraint) . ', ', 'found '.self::getPackageList($packages, $isVerbose, $pool, $constraint).' but '.(self::hasMultipleNames($packages) ? 'these do' : 'it does').' not match the constraint.' . $suffix);
        }

if (!Preg::isMatch('{^[A-Za-z0-9_./-]+$}', $packageName)) {
            $illegalChars = Preg::replace('{[A-Za-z0-9_./-]+}', '', $packageName);

return array("- Root composer.json requires $packageName, it ", 'could not be found, it looks like its name is invalid, "'.$illegalChars.'" is not allowed in package names.');
        }

if ($providers = $repositorySet->getProviders($packageName)) {
            $maxProviders = 20;
            $providersStr = implode(array_map(function ($p) {
                $description = $p['description'] ? ' '.substr($p['description'], 0, 100) : '';

return "      - ${p['name']}".$description."\n";
            }, count($providers) > $maxProviders + 1 ? array_slice($providers, 0, $maxProviders) : $providers));
            if (count($providers) > $maxProviders + 1) {
                $providersStr .= '      ... and '.(count($providers) - $maxProviders).' more.'."\n";
            }

return array("- Root composer.json requires $packageName".self::constraintToText($constraint).", it ", "could not be found in any version, but the following packages provide it:\n".$providersStr."      Consider requiring one of these to satisfy the $packageName requirement.");
        }

return array("- Root composer.json requires $packageName, it ", "could not be found in any version, there may be a typo in the package name.");
    }

/**
     * @internal
     * @param PackageInterface[] $packages
     * @param bool $isVerbose
     * @param bool $useRemovedVersionGroup
     * @return string
     */
    public static function getPackageList(array $packages, $isVerbose, Pool $pool = null, ConstraintInterface $constraint = null, $useRemovedVersionGroup = false)
    {
        $prepared = array();
        $hasDefaultBranch = array();
        foreach ($packages as $package) {
            $prepared[$package->getName()]['name'] = $package->getPrettyName();
            $prepared[$package->getName()]['versions'][$package->getVersion()] = $package->getPrettyVersion().($package instanceof AliasPackage ? ' (alias of '.$package->getAliasOf()->getPrettyVersion().')' : '');
            if ($pool && $constraint) {
                foreach ($pool->getRemovedVersions($package->getName(), $constraint) as $version => $prettyVersion) {
                    $prepared[$package->getName()]['versions'][$version] = $prettyVersion;
                }
            }
            if ($pool && $useRemovedVersionGroup) {
                foreach ($pool->getRemovedVersionsByPackage(spl_object_hash($package)) as $version => $prettyVersion) {
                    $prepared[$package->getName()]['versions'][$version] = $prettyVersion;
                }
            }
            if ($package->isDefaultBranch()) {
                $hasDefaultBranch[$package->getName()] = true;
            }
        }

$preparedStrings = array();
        foreach ($prepared as $name => $package) {
            // remove the implicit default branch alias to avoid cruft in the display
            if (isset($package['versions'][VersionParser::DEFAULT_BRANCH_ALIAS], $hasDefaultBranch[$name])) {
                unset($package['versions'][VersionParser::DEFAULT_BRANCH_ALIAS]);
            }

uksort($package['versions'], 'version_compare');

if (!$isVerbose) {
                $package['versions'] = self::condenseVersionList($package['versions'], 4);
            }
            $preparedStrings[] = $package['name'].'['.implode(', ', $package['versions']).']';
        }

return implode(', ', $preparedStrings);
    }

/**
     * @param  string $packageName
     * @param  string $version the effective runtime version of the platform package
     * @return ?string a version string or null if it appears the package was artificially disabled
     */
    private static function getPlatformPackageVersion(Pool $pool, $packageName, $version)
    {
        $available = $pool->whatProvides($packageName);

if (count($available)) {
            $selected = null;
            foreach ($available as $pkg) {
                if ($pkg->getRepository() instanceof PlatformRepository) {
                    $selected = $pkg;
                    break;
                }
            }
            if ($selected === null) {
                $selected = reset($available);
            }

// must be a package providing/replacing and not a real platform package
            if ($selected->getName() !== $packageName) {
                /** @var Link $link */
                foreach (array_merge(array_values($selected->getProvides()), array_values($selected->getReplaces())) as $link) {
                    if ($link->getTarget() === $packageName) {
                        return $link->getPrettyConstraint().' '.substr($link->getDescription(), 0, -1).'d by '.$selected->getPrettyString();
                    }
                }
            }

$version = $selected->getPrettyVersion();
            $extra = $selected->getExtra();
            if ($selected instanceof CompletePackageInterface && isset($extra['config.platform']) && $extra['config.platform'] === true) {
                $version .= '; ' . str_replace('Package ', '', $selected->getDescription());
            }
        } else {
            return null;
        }

return $version;
    }

/**
     * @param string[] $versions an array of pretty versions, with normalized versions as keys
     * @param int $max
     * @param int $maxDev
     * @return list<string> a list of pretty versions and '...' where versions were removed
     */
    private static function condenseVersionList(array $versions, $max, $maxDev = 16)
    {
        if (count($versions) <= $max) {
            return $versions;
        }

$filtered = array();
        $byMajor = array();
        foreach ($versions as $version => $pretty) {
            if (0 === stripos($version, 'dev-')) {
                $byMajor['dev'][] = $pretty;
            } else {
                $byMajor[Preg::replace('{^(\d+)\..*}', '$1', $version)][] = $pretty;
            }
        }
        foreach ($byMajor as $majorVersion => $versionsForMajor) {
            $maxVersions = $majorVersion === 'dev' ? $maxDev : $max;
            if (count($versionsForMajor) > $maxVersions) {
                // output only 1st and last versions
                $filtered[] = $versionsForMajor[0];
                $filtered[] = '...';
                $filtered[] = $versionsForMajor[count($versionsForMajor) - 1];
            } else {
                $filtered = array_merge($filtered, $versionsForMajor);
            }
        }

return $filtered;
    }

/**
     * @param PackageInterface[] $packages
     * @return bool
     */
    private static function hasMultipleNames(array $packages)
    {
        $name = null;
        foreach ($packages as $package) {
            if ($name === null || $name === $package->getName()) {
                $name = $package->getName();
            } else {
                return true;
            }
        }

return false;
    }

/**
     * @param bool $isVerbose
     * @param string $packageName
     * @param PackageInterface[] $higherRepoPackages
     * @param PackageInterface[] $allReposPackages
     * @param string $reason
     * @return array{0: string, 1: string}
     */
    private static function computeCheckForLowerPrioRepo(Pool $pool, $isVerbose, $packageName, array $higherRepoPackages, array $allReposPackages, $reason, ConstraintInterface $constraint = null)
    {
        $nextRepoPackages = array();
        $nextRepo = null;

foreach ($allReposPackages as $package) {
            if ($nextRepo === null || $nextRepo === $package->getRepository()) {
                $nextRepoPackages[] = $package;
                $nextRepo = $package->getRepository();
            } else {
                break;
            }
        }

if ($higherRepoPackages) {
            $topPackage = reset($higherRepoPackages);
            if ($topPackage instanceof RootPackageInterface) {
                return array(
                    "- Root composer.json requires $packageName".self::constraintToText($constraint).', it is ',
                    'satisfiable by '.self::getPackageList($nextRepoPackages, $isVerbose, $pool, $constraint).' from '.$nextRepo->getRepoName().' but '.$topPackage->getPrettyName().' is the root package and cannot be modified. See https://getcomposer.org/dep-on-root for details and assistance.',
                );
            }
        }

if ($nextRepo instanceof LockArrayRepository) {
            $singular = count($higherRepoPackages) === 1;

return array("- Root composer.json requires $packageName".self::constraintToText($constraint) . ', it is ',
                'found '.self::getPackageList($nextRepoPackages, $isVerbose, $pool, $constraint).' in the lock file and '.self::getPackageList($higherRepoPackages, $isVerbose, $pool, $constraint).' from '.reset($higherRepoPackages)->getRepository()->getRepoName().' but ' . ($singular ? 'it does' : 'these do') . ' not match your '.$reason.' and ' . ($singular ? 'is' : 'are') . ' therefore not installable. Make sure you either fix the '.$reason.' or avoid updating this package to keep the one from the lock file.', );
        }

return array("- Root composer.json requires $packageName".self::constraintToText($constraint) . ', it is ', 'satisfiable by '.self::getPackageList($nextRepoPackages, $isVerbose, $pool, $constraint).' from '.$nextRepo->getRepoName().' but '.self::getPackageList($higherRepoPackages, $isVerbose, $pool, $constraint).' from '.reset($higherRepoPackages)->getRepository()->getRepoName().' has higher repository priority. The packages from the higher priority repository do not match your '.$reason.' and are therefore not installable. That repository is canonical so the lower priority repo\'s packages are not installable. See https://getcomposer.org/repoprio for details and assistance.');
    }

/**
     * Turns a constraint into text usable in a sentence describing a request
     *
     * @return string
     */
    protected static function constraintToText(ConstraintInterface $constraint = null)
    {
        return $constraint ? ' '.$constraint->getPrettyString() : '';
    }
}
<?php

namespace Composer\DependencyResolver;

/**
 * @author Nils Adermann <naderman@naderman.de>
 * @phpstan-import-type ReasonData from Rule
 */
class RuleSetGenerator
{
    /** @var PolicyInterface */
    protected $policy;
    /** @var Pool */
    protected $pool;
    /** @var RuleSet */
    protected $rules;
    /** @var array<int, BasePackage> */
    protected $addedMap = array();
    /** @var array<string, BasePackage[]> */
    protected $addedPackagesByNames = array();

public function __construct(PolicyInterface $policy, Pool $pool)
    {
        $this->policy = $policy;
        $this->pool = $pool;
        $this->rules = new RuleSet;
    }

/**
     * Creates a new rule for the requirements of a package
     *
     * This rule is of the form (-A|B|C), where B and C are the providers of
     * one requirement of the package A.
     *
     * @param  BasePackage $package The package with a requirement
     * @param  BasePackage[] $providers The providers of the requirement
     * @param  Rule::RULE_* $reason A RULE_* constant describing the reason for generating this rule
     * @param  mixed $reasonData Any data, e.g. the requirement name, that goes with the reason
     * @return Rule|null The generated rule or null if tautological
     *
     * @phpstan-param ReasonData $reasonData
     */
    protected function createRequireRule(BasePackage $package, array $providers, $reason, $reasonData = null)
    {
        $literals = array(-$package->id);

foreach ($providers as $provider) {
            // self fulfilling rule?
            if ($provider === $package) {
                return null;
            }
            $literals[] = $provider->id;
        }

return new GenericRule($literals, $reason, $reasonData);
    }

/**
     * Creates a rule to install at least one of a set of packages
     *
     * The rule is (A|B|C) with A, B and C different packages. If the given
     * set of packages is empty an impossible rule is generated.
     *
     * @param  BasePackage[] $packages   The set of packages to choose from
     * @param  Rule::RULE_*  $reason     A RULE_* constant describing the reason for
     *                                   generating this rule
     * @param  array         $reasonData Additional data like the root require or fix request info
     * @return Rule          The generated rule
     *
     * @phpstan-param ReasonData $reasonData
     */
    protected function createInstallOneOfRule(array $packages, $reason, $reasonData)
    {
        $literals = array();
        foreach ($packages as $package) {
            $literals[] = $package->id;
        }

return new GenericRule($literals, $reason, $reasonData);
    }

/**
     * Creates a rule for two conflicting packages
     *
     * The rule for conflicting packages A and B is (-A|-B). A is called the issuer
     * and B the provider.
     *
     * @param BasePackage $issuer The package declaring the conflict
     * @param BasePackage $provider The package causing the conflict
     * @param Rule::RULE_* $reason A RULE_* constant describing the reason for generating this rule
     * @param mixed $reasonData Any data, e.g. the package name, that goes with the reason
     * @return ?Rule The generated rule
     *
     * @phpstan-param ReasonData $reasonData
     */
    protected function createRule2Literals(BasePackage $issuer, BasePackage $provider, $reason, $reasonData = null)
    {
        // ignore self conflict
        if ($issuer === $provider) {
            return null;
        }

return new Rule2Literals(-$issuer->id, -$provider->id, $reason, $reasonData);
    }

/**
     * @param BasePackage[] $packages
     * @param Rule::RULE_* $reason A RULE_* constant
     * @param mixed $reasonData
     * @return Rule
     *
     * @phpstan-param ReasonData $reasonData
     */
    protected function createMultiConflictRule(array $packages, $reason, $reasonData)
    {
        $literals = array();
        foreach ($packages as $package) {
            $literals[] = -$package->id;
        }

if (\count($literals) == 2) {
            return new Rule2Literals($literals[0], $literals[1], $reason, $reasonData);
        }

return new MultiConflictRule($literals, $reason, $reasonData);
    }

/**
     * Adds a rule unless it duplicates an existing one of any type
     *
     * To be able to directly pass in the result of one of the rule creation
     * methods null is allowed which will not insert a rule.
     *
     * @param RuleSet::TYPE_* $type A TYPE_* constant defining the rule type
     * @param Rule $newRule The rule about to be added
     *
     * @return void
     */
    private function addRule($type, Rule $newRule = null)
    {
        if (!$newRule) {
            return;
        }

$this->rules->add($newRule, $type);
    }

/**
     * @return void
     */
    protected function addRulesForPackage(BasePackage $package, PlatformRequirementFilterInterface $platformRequirementFilter)
    {
        /** @var \SplQueue<BasePackage> */
        $workQueue = new \SplQueue;
        $workQueue->enqueue($package);

while (!$workQueue->isEmpty()) {
            $package = $workQueue->dequeue();
            if (isset($this->addedMap[$package->id])) {
                continue;
            }

$this->addedMap[$package->id] = $package;

if (!$package instanceof AliasPackage) {
                foreach ($package->getNames(false) as $name) {
                    $this->addedPackagesByNames[$name][] = $package;
                }
            } else {
                $workQueue->enqueue($package->getAliasOf());
                $this->addRule(RuleSet::TYPE_PACKAGE, $this->createRequireRule($package, array($package->getAliasOf()), Rule::RULE_PACKAGE_ALIAS, $package));

// aliases must be installed with their main package, so create a rule the other way around as well
                $this->addRule(RuleSet::TYPE_PACKAGE, $this->createRequireRule($package->getAliasOf(), array($package), Rule::RULE_PACKAGE_INVERSE_ALIAS, $package->getAliasOf()));

// if alias package has no self.version requires, its requirements do not
                // need to be added as the aliased package processing will take care of it
                if (!$package->hasSelfVersionRequires()) {
                    continue;
                }
            }

foreach ($package->getRequires() as $link) {
                $constraint = $link->getConstraint();
                if ($platformRequirementFilter->isIgnored($link->getTarget())) {
                    continue;
                } elseif ($platformRequirementFilter instanceof IgnoreListPlatformRequirementFilter) {
                    $constraint = $platformRequirementFilter->filterConstraint($link->getTarget(), $constraint);
                }

$possibleRequires = $this->pool->whatProvides($link->getTarget(), $constraint);

$this->addRule(RuleSet::TYPE_PACKAGE, $this->createRequireRule($package, $possibleRequires, Rule::RULE_PACKAGE_REQUIRES, $link));

foreach ($possibleRequires as $require) {
                    $workQueue->enqueue($require);
                }
            }
        }
    }

/**
     * @return void
     */
    protected function addConflictRules(PlatformRequirementFilterInterface $platformRequirementFilter)
    {
        /** @var BasePackage $package */
        foreach ($this->addedMap as $package) {
            foreach ($package->getConflicts() as $link) {
                // even if conlict ends up being with an alias, there would be at least one actual package by this name
                if (!isset($this->addedPackagesByNames[$link->getTarget()])) {
                    continue;
                }

$constraint = $link->getConstraint();
                if ($platformRequirementFilter->isIgnored($link->getTarget())) {
                    continue;
                } elseif ($platformRequirementFilter instanceof IgnoreListPlatformRequirementFilter) {
                    $constraint = $platformRequirementFilter->filterConstraint($link->getTarget(), $constraint);
                }

$conflicts = $this->pool->whatProvides($link->getTarget(), $constraint);

foreach ($conflicts as $conflict) {
                    // define the conflict rule for regular packages, for alias packages it's only needed if the name
                    // matches the conflict exactly, otherwise the name match is by provide/replace which means the
                    // package which this is an alias of will conflict anyway, so no need to create additional rules
                    if (!$conflict instanceof AliasPackage || $conflict->getName() === $link->getTarget()) {
                        $this->addRule(RuleSet::TYPE_PACKAGE, $this->createRule2Literals($package, $conflict, Rule::RULE_PACKAGE_CONFLICT, $link));
                    }
                }
            }
        }

foreach ($this->addedPackagesByNames as $name => $packages) {
            if (\count($packages) > 1) {
                $reason = Rule::RULE_PACKAGE_SAME_NAME;
                $this->addRule(RuleSet::TYPE_PACKAGE, $this->createMultiConflictRule($packages, $reason, $name));
            }
        }
    }

/**
     * @return void
     */
    protected function addRulesForRequest(Request $request, PlatformRequirementFilterInterface $platformRequirementFilter)
    {
        foreach ($request->getFixedPackages() as $package) {
            if ($package->id == -1) {
                // fixed package was not added to the pool as it did not pass the stability requirements, this is fine
                if ($this->pool->isUnacceptableFixedOrLockedPackage($package)) {
                    continue;
                }

// otherwise, looks like a bug
                throw new \LogicException("Fixed package ".$package->getPrettyString()." was not added to solver pool.");
            }

$this->addRulesForPackage($package, $platformRequirementFilter);

$rule = $this->createInstallOneOfRule(array($package), Rule::RULE_FIXED, array(
                'package' => $package,
            ));
            $this->addRule(RuleSet::TYPE_REQUEST, $rule);
        }

foreach ($request->getRequires() as $packageName => $constraint) {
            if ($platformRequirementFilter->isIgnored($packageName)) {
                continue;
            } elseif ($platformRequirementFilter instanceof IgnoreListPlatformRequirementFilter) {
                $constraint = $platformRequirementFilter->filterConstraint($packageName, $constraint);
            }

$packages = $this->pool->whatProvides($packageName, $constraint);
            if ($packages) {
                foreach ($packages as $package) {
                    $this->addRulesForPackage($package, $platformRequirementFilter);
                }

$rule = $this->createInstallOneOfRule($packages, Rule::RULE_ROOT_REQUIRE, array(
                    'packageName' => $packageName,
                    'constraint' => $constraint,
                ));
                $this->addRule(RuleSet::TYPE_REQUEST, $rule);
            }
        }
    }

/**
     * @return void
     */
    protected function addRulesForRootAliases(PlatformRequirementFilterInterface $platformRequirementFilter)
    {
        foreach ($this->pool->getPackages() as $package) {
            // ensure that rules for root alias packages and aliases of packages which were loaded are also loaded
            // even if the alias itself isn't required, otherwise a package could be installed without its alias which
            // leads to unexpected behavior
            if (!isset($this->addedMap[$package->id]) &&
                $package instanceof AliasPackage &&
                ($package->isRootPackageAlias() || isset($this->addedMap[$package->getAliasOf()->id]))
            ) {
                $this->addRulesForPackage($package, $platformRequirementFilter);
            }
        }
    }

/**
     * @return RuleSet
     */
    public function getRulesFor(Request $request, PlatformRequirementFilterInterface $platformRequirementFilter = null)
    {
        $platformRequirementFilter = $platformRequirementFilter ?: PlatformRequirementFilterFactory::ignoreNothing();

$this->addRulesForRequest($request, $platformRequirementFilter);

$this->addRulesForRootAliases($platformRequirementFilter);

$this->addConflictRules($platformRequirementFilter);

// Remove references to packages
        $this->addedMap = $this->addedPackagesByNames = array();

$rules = $this->rules;

$this->rules = new RuleSet;

return $rules;
    }
}
<?php

namespace Composer\DependencyResolver;

use Composer\Package\AliasPackage;
use Composer\Package\Link;
use Composer\Package\PackageInterface;
use Composer\Repository\PlatformRepository;
use Composer\DependencyResolver\Operation\OperationInterface;

/**
 * @author Nils Adermann <naderman@naderman.de>
 * @internal
 */
class Transaction
{
    /**
     * @var OperationInterface[]
     */
    protected $operations;

/**
     * Packages present at the beginning of the transaction
     * @var PackageInterface[]
     */
    protected $presentPackages;

/**
     * Package set resulting from this transaction
     * @var array<string, PackageInterface>
     */
    protected $resultPackageMap;

/**
     * @var array<string, PackageInterface[]>
     */
    protected $resultPackagesByName = array();

/**
     * @param PackageInterface[] $presentPackages
     * @param PackageInterface[] $resultPackages
     */
    public function __construct($presentPackages, $resultPackages)
    {
        $this->presentPackages = $presentPackages;
        $this->setResultPackageMaps($resultPackages);
        $this->operations = $this->calculateOperations();
    }

/**
     * @return OperationInterface[]
     */
    public function getOperations()
    {
        return $this->operations;
    }

/**
     * @param PackageInterface[] $resultPackages
     * @return void
     */
    private function setResultPackageMaps($resultPackages)
    {
        $packageSort = function (PackageInterface $a, PackageInterface $b) {
            // sort alias packages by the same name behind their non alias version
            if ($a->getName() == $b->getName()) {
                if ($a instanceof AliasPackage != $b instanceof AliasPackage) {
                    return $a instanceof AliasPackage ? -1 : 1;
                }
                // if names are the same, compare version, e.g. to sort aliases reliably, actual order does not matter
                return strcmp($b->getVersion(), $a->getVersion());
            }

return strcmp($b->getName(), $a->getName());
        };

$this->resultPackageMap = array();
        foreach ($resultPackages as $package) {
            $this->resultPackageMap[spl_object_hash($package)] = $package;
            foreach ($package->getNames() as $name) {
                $this->resultPackagesByName[$name][] = $package;
            }
        }

uasort($this->resultPackageMap, $packageSort);
        foreach ($this->resultPackagesByName as $name => $packages) {
            uasort($this->resultPackagesByName[$name], $packageSort);
        }
    }

/**
     * @return OperationInterface[]
     */
    protected function calculateOperations()
    {
        $operations = array();

$presentPackageMap = array();
        $removeMap = array();
        $presentAliasMap = array();
        $removeAliasMap = array();
        foreach ($this->presentPackages as $package) {
            if ($package instanceof AliasPackage) {
                $presentAliasMap[$package->getName().'::'.$package->getVersion()] = $package;
                $removeAliasMap[$package->getName().'::'.$package->getVersion()] = $package;
            } else {
                $presentPackageMap[$package->getName()] = $package;
                $removeMap[$package->getName()] = $package;
            }
        }

$stack = $this->getRootPackages();

$visited = array();
        $processed = array();

while (!empty($stack)) {
            $package = array_pop($stack);

if (isset($processed[spl_object_hash($package)])) {
                continue;
            }

if (!isset($visited[spl_object_hash($package)])) {
                $visited[spl_object_hash($package)] = true;

$stack[] = $package;
                if ($package instanceof AliasPackage) {
                    $stack[] = $package->getAliasOf();
                } else {
                    foreach ($package->getRequires() as $link) {
                        $possibleRequires = $this->getProvidersInResult($link);

foreach ($possibleRequires as $require) {
                            $stack[] = $require;
                        }
                    }
                }
            } elseif (!isset($processed[spl_object_hash($package)])) {
                $processed[spl_object_hash($package)] = true;

if ($package instanceof AliasPackage) {
                    $aliasKey = $package->getName().'::'.$package->getVersion();
                    if (isset($presentAliasMap[$aliasKey])) {
                        unset($removeAliasMap[$aliasKey]);
                    } else {
                        $operations[] = new Operation\MarkAliasInstalledOperation($package);
                    }
                } else {
                    if (isset($presentPackageMap[$package->getName()])) {
                        $source = $presentPackageMap[$package->getName()];

// do we need to update?
                        // TODO different for lock?
                        if ($package->getVersion() != $presentPackageMap[$package->getName()]->getVersion() ||
                            $package->getDistReference() !== $presentPackageMap[$package->getName()]->getDistReference() ||
                            $package->getSourceReference() !== $presentPackageMap[$package->getName()]->getSourceReference()
                        ) {
                            $operations[] = new Operation\UpdateOperation($source, $package);
                        }
                        unset($removeMap[$package->getName()]);
                    } else {
                        $operations[] = new Operation\InstallOperation($package);
                        unset($removeMap[$package->getName()]);
                    }
                }
            }
        }

foreach ($removeMap as $name => $package) {
            array_unshift($operations, new Operation\UninstallOperation($package));
        }
        foreach ($removeAliasMap as $nameVersion => $package) {
            $operations[] = new Operation\MarkAliasUninstalledOperation($package);
        }

$operations = $this->movePluginsToFront($operations);
        // TODO fix this:
        // we have to do this again here even though the above stack code did it because moving plugins moves them before uninstalls
        $operations = $this->moveUninstallsToFront($operations);

// TODO skip updates which don't update? is this needed? we shouldn't schedule this update in the first place?
        /*
        if ('update' === $opType) {
            $targetPackage = $operation->getTargetPackage();
            if ($targetPackage->isDev()) {
                $initialPackage = $operation->getInitialPackage();
                if ($targetPackage->getVersion() === $initialPackage->getVersion()
                    && (!$targetPackage->getSourceReference() || $targetPackage->getSourceReference() === $initialPackage->getSourceReference())
                    && (!$targetPackage->getDistReference() || $targetPackage->getDistReference() === $initialPackage->getDistReference())
                ) {
                    $this->io->writeError('  - Skipping update of ' . $targetPackage->getPrettyName() . ' to the same reference-locked version', true, IOInterface::DEBUG);
                    $this->io->writeError('', true, IOInterface::DEBUG);

continue;
                }
            }
        }*/

return $this->operations = $operations;
    }

/**
     * Determine which packages in the result are not required by any other packages in it.
     *
     * These serve as a starting point to enumerate packages in a topological order despite potential cycles.
     * If there are packages with a cycle on the top level the package with the lowest name gets picked
     *
     * @return array<string, PackageInterface>
     */
    protected function getRootPackages()
    {
        $roots = $this->resultPackageMap;

foreach ($this->resultPackageMap as $packageHash => $package) {
            if (!isset($roots[$packageHash])) {
                continue;
            }

foreach ($package->getRequires() as $link) {
                $possibleRequires = $this->getProvidersInResult($link);

foreach ($possibleRequires as $require) {
                    if ($require !== $package) {
                        unset($roots[spl_object_hash($require)]);
                    }
                }
            }
        }

return $roots;
    }

/**
     * @return PackageInterface[]
     */
    protected function getProvidersInResult(Link $link)
    {
        if (!isset($this->resultPackagesByName[$link->getTarget()])) {
            return array();
        }

return $this->resultPackagesByName[$link->getTarget()];
    }

/**
     * Workaround: if your packages depend on plugins, we must be sure
     * that those are installed / updated first; else it would lead to packages
     * being installed multiple times in different folders, when running Composer
     * twice.
     *
     * While this does not fix the root-causes of https://github.com/composer/composer/issues/1147,
     * it at least fixes the symptoms and makes usage of composer possible (again)
     * in such scenarios.
     *
     * @param  OperationInterface[] $operations
     * @return OperationInterface[] reordered operation list
     */
    private function movePluginsToFront(array $operations)
    {
        $dlModifyingPluginsNoDeps = array();
        $dlModifyingPluginsWithDeps = array();
        $dlModifyingPluginRequires = array();
        $pluginsNoDeps = array();
        $pluginsWithDeps = array();
        $pluginRequires = array();

foreach (array_reverse($operations, true) as $idx => $op) {
            if ($op instanceof Operation\InstallOperation) {
                $package = $op->getPackage();
            } elseif ($op instanceof Operation\UpdateOperation) {
                $package = $op->getTargetPackage();
            } else {
                continue;
            }

$isDownloadsModifyingPlugin = $package->getType() === 'composer-plugin' && ($extra = $package->getExtra()) && isset($extra['plugin-modifies-downloads']) && $extra['plugin-modifies-downloads'] === true;

// is this a downloads modifying plugin or a dependency of one?
            if ($isDownloadsModifyingPlugin || count(array_intersect($package->getNames(), $dlModifyingPluginRequires))) {
                // get the package's requires, but filter out any platform requirements
                $requires = array_filter(array_keys($package->getRequires()), function ($req) {
                    return !PlatformRepository::isPlatformPackage($req);
                });

// is this a plugin with no meaningful dependencies?
                if ($isDownloadsModifyingPlugin && !count($requires)) {
                    // plugins with no dependencies go to the very front
                    array_unshift($dlModifyingPluginsNoDeps, $op);
                } else {
                    // capture the requirements for this package so those packages will be moved up as well
                    $dlModifyingPluginRequires = array_merge($dlModifyingPluginRequires, $requires);
                    // move the operation to the front
                    array_unshift($dlModifyingPluginsWithDeps, $op);
                }

unset($operations[$idx]);
                continue;
            }

// is this package a plugin?
            $isPlugin = $package->getType() === 'composer-plugin' || $package->getType() === 'composer-installer';

// is this a plugin or a dependency of a plugin?
            if ($isPlugin || count(array_intersect($package->getNames(), $pluginRequires))) {
                // get the package's requires, but filter out any platform requirements
                $requires = array_filter(array_keys($package->getRequires()), function ($req) {
                    return !PlatformRepository::isPlatformPackage($req);
                });

// is this a plugin with no meaningful dependencies?
                if ($isPlugin && !count($requires)) {
                    // plugins with no dependencies go to the very front
                    array_unshift($pluginsNoDeps, $op);
                } else {
                    // capture the requirements for this package so those packages will be moved up as well
                    $pluginRequires = array_merge($pluginRequires, $requires);
                    // move the operation to the front
                    array_unshift($pluginsWithDeps, $op);
                }

unset($operations[$idx]);
            }
        }

return array_merge($dlModifyingPluginsNoDeps, $dlModifyingPluginsWithDeps, $pluginsNoDeps, $pluginsWithDeps, $operations);
    }

/**
     * Removals of packages should be executed before installations in
     * case two packages resolve to the same path (due to custom installers)
     *
     * @param  OperationInterface[] $operations
     * @return OperationInterface[] reordered operation list
     */
    private function moveUninstallsToFront(array $operations)
    {
        $uninstOps = array();
        foreach ($operations as $idx => $op) {
            if ($op instanceof Operation\UninstallOperation || $op instanceof Operation\MarkAliasUninstalledOperation) {
                $uninstOps[] = $op;
                unset($operations[$idx]);
            }
        }

return array_merge($uninstOps, $operations);
    }
}
<?php

namespace Composer\DependencyResolver;

use Composer\Package\BasePackage;
use Composer\Package\PackageInterface;
use Composer\Repository\LockArrayRepository;
use Composer\Semver\Constraint\ConstraintInterface;
use Composer\Semver\Constraint\MatchAllConstraint;

/**
 * @author Nils Adermann <naderman@naderman.de>
 */
class Request
{
    /**
     * Identifies a partial update for listed packages only, all dependencies will remain at locked versions
     */
    const UPDATE_ONLY_LISTED = 0;

/**
     * Identifies a partial update for listed packages and recursively all their dependencies, however dependencies
     * also directly required by the root composer.json and their dependencies will remain at the locked version.
     */
    const UPDATE_LISTED_WITH_TRANSITIVE_DEPS_NO_ROOT_REQUIRE = 1;

/**
     * Identifies a partial update for listed packages and recursively all their dependencies, even dependencies
     * also directly required by the root composer.json will be updated.
     */
    const UPDATE_LISTED_WITH_TRANSITIVE_DEPS = 2;

/** @var ?LockArrayRepository */
    protected $lockedRepository;
    /** @var array<string, ConstraintInterface> */
    protected $requires = array();
    /** @var array<string, BasePackage> */
    protected $fixedPackages = array();
    /** @var array<string, BasePackage> */
    protected $lockedPackages = array();
    /** @var array<string, BasePackage> */
    protected $fixedLockedPackages = array();
    /** @var string[] */
    protected $updateAllowList = array();
    /** @var false|self::UPDATE_* */
    protected $updateAllowTransitiveDependencies = false;

public function __construct(LockArrayRepository $lockedRepository = null)
    {
        $this->lockedRepository = $lockedRepository;
    }

/**
     * @param string $packageName
     * @return void
     */
    public function requireName($packageName, ConstraintInterface $constraint = null)
    {
        $packageName = strtolower($packageName);

if ($constraint === null) {
            $constraint = new MatchAllConstraint();
        }
        if (isset($this->requires[$packageName])) {
            throw new \LogicException('Overwriting requires seems like a bug ('.$packageName.' '.$this->requires[$packageName]->getPrettyString().' => '.$constraint->getPrettyString().', check why it is happening, might be a root alias');
        }
        $this->requires[$packageName] = $constraint;
    }

/**
     * Mark a package as currently present and having to remain installed
     *
     * This is used for platform packages which cannot be modified by Composer. A rule enforcing their installation is
     * generated for dependency resolution. Partial updates with dependencies cannot in any way modify these packages.
     *
     * @return void
     */
    public function fixPackage(BasePackage $package)
    {
        $this->fixedPackages[spl_object_hash($package)] = $package;
    }

/**
     * Mark a package as locked to a specific version but removable
     *
     * This is used for lock file packages which need to be treated similar to fixed packages by the pool builder in
     * that by default they should really only have the currently present version loaded and no remote alternatives.
     *
     * However unlike fixed packages there will not be a special rule enforcing their installation for the solver, so
     * if nothing requires these packages they will be removed. Additionally in a partial update these packages can be
     * unlocked, meaning other versions can be installed if explicitly requested as part of the update.
     *
     * @return void
     */
    public function lockPackage(BasePackage $package)
    {
        $this->lockedPackages[spl_object_hash($package)] = $package;
    }

/**
     * Marks a locked package fixed. So it's treated irremovable like a platform package.
     *
     * This is necessary for the composer install step which verifies the lock file integrity and should not allow
     * removal of any packages. At the same time lock packages there cannot simply be marked fixed, as error reporting
     * would then report them as platform packages, so this still marks them as locked packages at the same time.
     *
     * @return void
     */
    public function fixLockedPackage(BasePackage $package)
    {
        $this->fixedPackages[spl_object_hash($package)] = $package;
        $this->fixedLockedPackages[spl_object_hash($package)] = $package;
    }

/**
     * @return void
     */
    public function unlockPackage(BasePackage $package)
    {
        unset($this->lockedPackages[spl_object_hash($package)]);
    }

/**
     * @param string[] $updateAllowList
     * @param false|self::UPDATE_* $updateAllowTransitiveDependencies
     * @return void
     */
    public function setUpdateAllowList($updateAllowList, $updateAllowTransitiveDependencies)
    {
        $this->updateAllowList = $updateAllowList;
        $this->updateAllowTransitiveDependencies = $updateAllowTransitiveDependencies;
    }

/**
     * @return string[]
     */
    public function getUpdateAllowList()
    {
        return $this->updateAllowList;
    }

/**
     * @return bool
     */
    public function getUpdateAllowTransitiveDependencies()
    {
        return $this->updateAllowTransitiveDependencies !== self::UPDATE_ONLY_LISTED;
    }

/**
     * @return bool
     */
    public function getUpdateAllowTransitiveRootDependencies()
    {
        return $this->updateAllowTransitiveDependencies === self::UPDATE_LISTED_WITH_TRANSITIVE_DEPS;
    }

/**
     * @return array<string, ConstraintInterface>
     */
    public function getRequires()
    {
        return $this->requires;
    }

/**
     * @return array<string, BasePackage>
     */
    public function getFixedPackages()
    {
        return $this->fixedPackages;
    }

/**
     * @return bool
     */
    public function isFixedPackage(BasePackage $package)
    {
        return isset($this->fixedPackages[spl_object_hash($package)]);
    }

/**
     * @return array<string, BasePackage>
     */
    public function getLockedPackages()
    {
        return $this->lockedPackages;
    }

/**
     * @return bool
     */
    public function isLockedPackage(PackageInterface $package)
    {
        return isset($this->lockedPackages[spl_object_hash($package)]) || isset($this->fixedLockedPackages[spl_object_hash($package)]);
    }

/**
     * @return array<string, BasePackage>
     */
    public function getFixedOrLockedPackages()
    {
        return array_merge($this->fixedPackages, $this->lockedPackages);
    }

/**
     * @param bool $packageIds
     * @return array<int|string, BasePackage>
     *
     * @TODO look into removing the packageIds option, the only place true is used
     *       is for the installed map in the solver problems.
     *       Some locked packages may not be in the pool,
     *       so they have a package->id of -1
     */
    public function getPresentMap($packageIds = false)
    {
        $presentMap = array();

if ($this->lockedRepository) {
            foreach ($this->lockedRepository->getPackages() as $package) {
                $presentMap[$packageIds ? $package->getId() : spl_object_hash($package)] = $package;
            }
        }

foreach ($this->fixedPackages as $package) {
            $presentMap[$packageIds ? $package->getId() : spl_object_hash($package)] = $package;
        }

return $presentMap;
    }

/**
     * @return BasePackage[]
     */
    public function getFixedPackagesMap()
    {
        $fixedPackagesMap = array();

foreach ($this->fixedPackages as $package) {
            $fixedPackagesMap[$package->getId()] = $package;
        }

return $fixedPackagesMap;
    }

/**
     * @return ?LockArrayRepository
     */
    public function getLockedRepository()
    {
        return $this->lockedRepository;
    }
}
<?php

namespace Composer\DependencyResolver;

use Composer\Package\AliasPackage;
use Composer\Package\BasePackage;
use Composer\Package\PackageInterface;
use Composer\Semver\Constraint\Constraint;

/**
 * @author Nils Adermann <naderman@naderman.de>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class DefaultPolicy implements PolicyInterface
{
    /** @var bool */
    private $preferStable;
    /** @var bool */
    private $preferLowest;

/**
     * @param bool $preferStable
     * @param bool $preferLowest
     */
    public function __construct($preferStable = false, $preferLowest = false)
    {
        $this->preferStable = $preferStable;
        $this->preferLowest = $preferLowest;
    }

/**
     * @param string $operator One of Constraint::STR_OP_*
     * @return bool
     *
     * @phpstan-param Constraint::STR_OP_* $operator
     */
    public function versionCompare(PackageInterface $a, PackageInterface $b, $operator)
    {
        if ($this->preferStable && ($stabA = $a->getStability()) !== ($stabB = $b->getStability())) {
            return BasePackage::$stabilities[$stabA] < BasePackage::$stabilities[$stabB];
        }

$constraint = new Constraint($operator, $b->getVersion());
        $version = new Constraint('==', $a->getVersion());

return $constraint->matchSpecific($version, true);
    }

/**
     * @param  int[]  $literals
     * @param  string $requiredPackage
     * @return int[]
     */
    public function selectPreferredPackages(Pool $pool, array $literals, $requiredPackage = null)
    {
        $packages = $this->groupLiteralsByName($pool, $literals);
        $policy = $this;

foreach ($packages as &$nameLiterals) {
            usort($nameLiterals, function ($a, $b) use ($policy, $pool, $requiredPackage) {
                return $policy->compareByPriority($pool, $pool->literalToPackage($a), $pool->literalToPackage($b), $requiredPackage, true);
            });
        }

foreach ($packages as &$sortedLiterals) {
            $sortedLiterals = $this->pruneToBestVersion($pool, $sortedLiterals);
            $sortedLiterals = $this->pruneRemoteAliases($pool, $sortedLiterals);
        }

$selected = \call_user_func_array('array_merge', array_values($packages));

// now sort the result across all packages to respect replaces across packages
        usort($selected, function ($a, $b) use ($policy, $pool, $requiredPackage) {
            return $policy->compareByPriority($pool, $pool->literalToPackage($a), $pool->literalToPackage($b), $requiredPackage);
        });

return $selected;
    }

/**
     * @param  int[] $literals
     * @return array<string, int[]>
     */
    protected function groupLiteralsByName(Pool $pool, $literals)
    {
        $packages = array();
        foreach ($literals as $literal) {
            $packageName = $pool->literalToPackage($literal)->getName();

if (!isset($packages[$packageName])) {
                $packages[$packageName] = array();
            }
            $packages[$packageName][] = $literal;
        }

return $packages;
    }

/**
     * @protected
     * @param ?string $requiredPackage
     * @param bool $ignoreReplace
     * @return int
     */
    public function compareByPriority(Pool $pool, BasePackage $a, BasePackage $b, $requiredPackage = null, $ignoreReplace = false)
    {
        // prefer aliases to the original package
        if ($a->getName() === $b->getName()) {
            $aAliased = $a instanceof AliasPackage;
            $bAliased = $b instanceof AliasPackage;
            if ($aAliased && !$bAliased) {
                return -1; // use a
            }
            if (!$aAliased && $bAliased) {
                return 1; // use b
            }
        }

if (!$ignoreReplace) {
            // return original, not replaced
            if ($this->replaces($a, $b)) {
                return 1; // use b
            }
            if ($this->replaces($b, $a)) {
                return -1; // use a
            }

// for replacers not replacing each other, put a higher prio on replacing
            // packages with the same vendor as the required package
            if ($requiredPackage && false !== ($pos = strpos($requiredPackage, '/'))) {
                $requiredVendor = substr($requiredPackage, 0, $pos);

$aIsSameVendor = strpos($a->getName(), $requiredVendor) === 0;
                $bIsSameVendor = strpos($b->getName(), $requiredVendor) === 0;

if ($bIsSameVendor !== $aIsSameVendor) {
                    return $aIsSameVendor ? -1 : 1;
                }
            }
        }

// priority equal, sort by package id to make reproducible
        if ($a->id === $b->id) {
            return 0;
        }

return ($a->id < $b->id) ? -1 : 1;
    }

/**
     * Checks if source replaces a package with the same name as target.
     *
     * Replace constraints are ignored. This method should only be used for
     * prioritisation, not for actual constraint verification.
     *
     * @return bool
     */
    protected function replaces(BasePackage $source, BasePackage $target)
    {
        foreach ($source->getReplaces() as $link) {
            if ($link->getTarget() === $target->getName()
//                && (null === $link->getConstraint() ||
//                $link->getConstraint()->matches(new Constraint('==', $target->getVersion())))) {
                ) {
                return true;
            }
        }

return false;
    }

/**
     * @param  int[] $literals
     * @return int[]
     */
    protected function pruneToBestVersion(Pool $pool, $literals)
    {
        $operator = $this->preferLowest ? '<' : '>';
        $bestLiterals = array($literals[0]);
        $bestPackage = $pool->literalToPackage($literals[0]);
        foreach ($literals as $i => $literal) {
            if (0 === $i) {
                continue;
            }

$package = $pool->literalToPackage($literal);

if ($this->versionCompare($package, $bestPackage, $operator)) {
                $bestPackage = $package;
                $bestLiterals = array($literal);
            } elseif ($this->versionCompare($package, $bestPackage, '==')) {
                $bestLiterals[] = $literal;
            }
        }

return $bestLiterals;
    }

/**
     * Assumes that locally aliased (in root package requires) packages take priority over branch-alias ones
     *
     * If no package is a local alias, nothing happens
     *
     * @param  int[] $literals
     * @return int[]
     */
    protected function pruneRemoteAliases(Pool $pool, array $literals)
    {
        $hasLocalAlias = false;

foreach ($literals as $literal) {
            $package = $pool->literalToPackage($literal);

if ($package instanceof AliasPackage && $package->isRootPackageAlias()) {
                $hasLocalAlias = true;
                break;
            }
        }

if (!$hasLocalAlias) {
            return $literals;
        }

$selected = array();
        foreach ($literals as $literal) {
            $package = $pool->literalToPackage($literal);

if ($package instanceof AliasPackage && $package->isRootPackageAlias()) {
                $selected[] = $literal;
            }
        }

return $selected;
    }
}
<?php

namespace Composer\Console;

use Composer\Pcre\Preg;
use Symfony\Component\Console\Formatter\OutputFormatter;
use Symfony\Component\Console\Formatter\OutputFormatterStyle;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class HtmlOutputFormatter extends OutputFormatter
{
    /** @var array<int, string> */
    private static $availableForegroundColors = array(
        30 => 'black',
        31 => 'red',
        32 => 'green',
        33 => 'yellow',
        34 => 'blue',
        35 => 'magenta',
        36 => 'cyan',
        37 => 'white',
    );
    /** @var array<int, string> */
    private static $availableBackgroundColors = array(
        40 => 'black',
        41 => 'red',
        42 => 'green',
        43 => 'yellow',
        44 => 'blue',
        45 => 'magenta',
        46 => 'cyan',
        47 => 'white',
    );
    /** @var array<int, string> */
    private static $availableOptions = array(
        1 => 'bold',
        4 => 'underscore',
        //5 => 'blink',
        //7 => 'reverse',
        //8 => 'conceal'
    );

/**
     * @param array<string, OutputFormatterStyle> $styles Array of "name => FormatterStyle" instances
     */
    public function __construct(array $styles = array())
    {
        parent::__construct(true, $styles);
    }

/**
     * @param ?string $message
     *
     * @return string
     */
    public function format($message)
    {
        $formatted = parent::format($message);

$clearEscapeCodes = '(?:39|49|0|22|24|25|27|28)';

// TODO in 2.3 replace with Closure::fromCallable and then use Preg::replaceCallback
        return preg_replace_callback("{\033\[([0-9;]+)m(.*?)\033\[(?:".$clearEscapeCodes.";)*?".$clearEscapeCodes."m}s", array($this, 'formatHtml'), $formatted);
    }

/**
     * @param string[] $matches
     *
     * @return string
     */
    private function formatHtml($matches)
    {
        $out = '<span style="';
        foreach (explode(';', $matches[1]) as $code) {
            if (isset(self::$availableForegroundColors[(int) $code])) {
                $out .= 'color:'.self::$availableForegroundColors[(int) $code].';';
            } elseif (isset(self::$availableBackgroundColors[(int) $code])) {
                $out .= 'background-color:'.self::$availableBackgroundColors[(int) $code].';';
            } elseif (isset(self::$availableOptions[(int) $code])) {
                switch (self::$availableOptions[(int) $code]) {
                    case 'bold':
                        $out .= 'font-weight:bold;';
                        break;

case 'underscore':
                        $out .= 'text-decoration:underline;';
                        break;
                }
            }
        }

return $out.'">'.$matches[2].'</span>';
    }
}
<?php

namespace Composer\Console;

use Composer\IO\NullIO;
use Composer\Util\Filesystem;
use Composer\Util\Platform;
use Composer\Util\Silencer;
use Symfony\Component\Console\Application as BaseApplication;
use Symfony\Component\Console\Exception\CommandNotFoundException;
use Symfony\Component\Console\Helper\HelperSet;
use Symfony\Component\Console\Helper\QuestionHelper;
use Symfony\Component\Console\Input\InputDefinition;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;
use Seld\JsonLint\ParsingException;
use Composer\Command;
use Composer\Composer;
use Composer\Factory;
use Composer\IO\IOInterface;
use Composer\IO\ConsoleIO;
use Composer\Json\JsonValidationException;
use Composer\Util\ErrorHandler;
use Composer\Util\HttpDownloader;
use Composer\EventDispatcher\ScriptExecutionException;
use Composer\Exception\NoSslException;
use Composer\XdebugHandler\XdebugHandler;
use Symfony\Component\Process\Exception\ProcessTimedOutException;

/**
 * The console application that handles the commands
 *
 * @author Ryan Weaver <ryan@knplabs.com>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 * @author François Pluchino <francois.pluchino@opendisplay.com>
 */
class Application extends BaseApplication
{
    /**
     * @var ?Composer
     */
    protected $composer;

/**
     * @var IOInterface
     */
    protected $io;

/** @var string */
    private static $logo = '   ______
  / ____/___  ____ ___  ____  ____  ________  _____
 / /   / __ \/ __ `__ \/ __ \/ __ \/ ___/ _ \/ ___/
/ /___/ /_/ / / / / / / /_/ / /_/ (__  )  __/ /
\____/\____/_/ /_/ /_/ .___/\____/____/\___/_/
                    /_/
';

/** @var bool */
    private $hasPluginCommands = false;
    /** @var bool */
    private $disablePluginsByDefault = false;
    /** @var bool */
    private $disableScriptsByDefault = false;

/**
     * @var string Store the initial working directory at startup time
     */
    private $initialWorkingDirectory;

public function __construct()
    {
        static $shutdownRegistered = false;

if (function_exists('ini_set') && extension_loaded('xdebug')) {
            ini_set('xdebug.show_exception_trace', '0');
            ini_set('xdebug.scream', '0');
        }

if (function_exists('date_default_timezone_set') && function_exists('date_default_timezone_get')) {
            date_default_timezone_set(Silencer::call('date_default_timezone_get'));
        }

if (!$shutdownRegistered) {
            if (function_exists('pcntl_async_signals') && function_exists('pcntl_signal')) {
                pcntl_async_signals(true);
                pcntl_signal(SIGINT, function ($sig) {
                    exit(130);
                });
            }

$shutdownRegistered = true;

register_shutdown_function(function () {
                $lastError = error_get_last();

if ($lastError && $lastError['message'] &&
                   (strpos($lastError['message'], 'Allowed memory') !== false /*Zend PHP out of memory error*/ ||
                    strpos($lastError['message'], 'exceeded memory') !== false /*HHVM out of memory errors*/)) {
                    echo "\n". 'Check https://getcomposer.org/doc/articles/troubleshooting.md#memory-limit-errors for more info on how to handle out of memory errors.';
                }
            });
        }

$this->io = new NullIO();

$this->initialWorkingDirectory = getcwd();

parent::__construct('Composer', Composer::getVersion());
    }

/**
     * @return int
     */
    public function run(InputInterface $input = null, OutputInterface $output = null)
    {
        if (null === $output) {
            $output = Factory::createOutput();
        }

return parent::run($input, $output);
    }

/**
     * @return int
     */
    public function doRun(InputInterface $input, OutputInterface $output)
    {
        $this->disablePluginsByDefault = $input->hasParameterOption('--no-plugins');
        $this->disableScriptsByDefault = $input->hasParameterOption('--no-scripts');

if (Platform::getEnv('COMPOSER_NO_INTERACTION') || !Platform::isTty(defined('STDIN') ? STDIN : fopen('php://stdin', 'r'))) {
            $input->setInteractive(false);
        }

$io = $this->io = new ConsoleIO($input, $output, new HelperSet(array(
            new QuestionHelper(),
        )));

// Register error handler again to pass it the IO instance
        ErrorHandler::register($io);

if ($input->hasParameterOption('--no-cache')) {
            $io->writeError('Disabling cache usage', true, IOInterface::DEBUG);
            Platform::putEnv('COMPOSER_CACHE_DIR', Platform::isWindows() ? 'nul' : '/dev/null');
        }

// switch working dir
        if ($newWorkDir = $this->getNewWorkingDir($input)) {
            $oldWorkingDir = getcwd();
            chdir($newWorkDir);
            $this->initialWorkingDirectory = $newWorkDir;
            $io->writeError('Changed CWD to ' . getcwd(), true, IOInterface::DEBUG);
        }

// determine command name to be executed without including plugin commands
        $commandName = '';
        if ($name = $this->getCommandName($input)) {
            try {
                $commandName = $this->find($name)->getName();
            } catch (CommandNotFoundException $e) {
                // we'll check command validity again later after plugins are loaded
                $commandName = false;
            } catch (\InvalidArgumentException $e) {
            }
        }

// prompt user for dir change if no composer.json is present in current dir
        if ($io->isInteractive() && !$newWorkDir && !in_array($commandName, array('', 'list', 'init', 'about', 'help', 'diagnose', 'self-update', 'global', 'create-project', 'outdated'), true) && !file_exists(Factory::getComposerFile()) && ($useParentDirIfNoJsonAvailable = $this->getUseParentDirConfigValue()) !== false) {
            $dir = dirname(getcwd());
            $home = realpath(Platform::getEnv('HOME') ?: Platform::getEnv('USERPROFILE') ?: '/');

// abort when we reach the home dir or top of the filesystem
            while (dirname($dir) !== $dir && $dir !== $home) {
                if (file_exists($dir.'/'.Factory::getComposerFile())) {
                    if ($useParentDirIfNoJsonAvailable === true || $io->askConfirmation('<info>No composer.json in current directory, do you want to use the one at '.$dir.'?</info> [<comment>Y,n</comment>]? ')) {
                        if ($useParentDirIfNoJsonAvailable === true) {
                            $io->writeError('<info>No composer.json in current directory, changing working directory to '.$dir.'</info>');
                        } else {
                            $io->writeError('<info>Always want to use the parent dir? Use "composer config --global use-parent-dir true" to change the default.</info>');
                        }
                        $oldWorkingDir = getcwd();
                        chdir($dir);
                    }
                    break;
                }
                $dir = dirname($dir);
            }
        }

// avoid loading plugins/initializing the Composer instance earlier than necessary if no plugin command is needed
        // if showing the version, we never need plugin commands
        $mayNeedPluginCommand = false === $input->hasParameterOption(array('--version', '-V'))
            && (
                // not a composer command, so try loading plugin ones
                false === $commandName
                // list command requires plugin commands to show them
                || in_array($commandName, array('', 'list', 'help'), true)
            );

if ($mayNeedPluginCommand && !$this->disablePluginsByDefault && !$this->hasPluginCommands) {
            try {
                foreach ($this->getPluginCommands() as $command) {
                    if ($this->has($command->getName())) {
                        $io->writeError('<warning>Plugin command '.$command->getName().' ('.get_class($command).') would override a Composer command and has been skipped</warning>');
                    } else {
                        $this->add($command);
                    }
                }
            } catch (NoSslException $e) {
                // suppress these as they are not relevant at this point
            } catch (ParsingException $e) {
                $details = $e->getDetails();

$file = realpath(Factory::getComposerFile());

$line = null;
                if ($details && isset($details['line'])) {
                    $line = $details['line'];
                }

$ghe = new GithubActionError($this->io);
                $ghe->emit($e->getMessage(), $file, $line);

throw $e;
            }

$this->hasPluginCommands = true;
        }

// determine command name to be executed incl plugin commands, and check if it's a proxy command
        $isProxyCommand = false;
        if ($name = $this->getCommandName($input)) {
            try {
                $command = $this->find($name);
                $commandName = $command->getName();
                $isProxyCommand = ($command instanceof Command\BaseCommand && $command->isProxyCommand());
            } catch (\InvalidArgumentException $e) {
            }
        }

if (!$isProxyCommand) {
            $io->writeError(sprintf(
                'Running %s (%s) with %s on %s',
                Composer::getVersion(),
                Composer::RELEASE_DATE,
                defined('HHVM_VERSION') ? 'HHVM '.HHVM_VERSION : 'PHP '.PHP_VERSION,
                function_exists('php_uname') ? php_uname('s') . ' / ' . php_uname('r') : 'Unknown OS'
            ), true, IOInterface::DEBUG);

if (PHP_VERSION_ID < 50302) {
                $io->writeError('<warning>Composer only officially supports PHP 5.3.2 and above, you will most likely encounter problems with your PHP '.PHP_VERSION.', upgrading is strongly recommended.</warning>');
            }

if (XdebugHandler::isXdebugActive() && !Platform::getEnv('COMPOSER_DISABLE_XDEBUG_WARN')) {
                $io->writeError('<warning>Composer is operating slower than normal because you have Xdebug enabled. See https://getcomposer.org/xdebug</warning>');
            }

if (defined('COMPOSER_DEV_WARNING_TIME') && $commandName !== 'self-update' && $commandName !== 'selfupdate' && time() > COMPOSER_DEV_WARNING_TIME) {
                $io->writeError(sprintf('<warning>Warning: This development build of Composer is over 60 days old. It is recommended to update it by running "%s self-update" to get the latest version.</warning>', $_SERVER['PHP_SELF']));
            }

if (
                !Platform::isWindows()
                && function_exists('exec')
                && !Platform::getEnv('COMPOSER_ALLOW_SUPERUSER')
                && (ini_get('open_basedir') || !file_exists('/.dockerenv'))
            ) {
                if (function_exists('posix_getuid') && posix_getuid() === 0) {
                    if ($commandName !== 'self-update' && $commandName !== 'selfupdate') {
                        $io->writeError('<warning>Do not run Composer as root/super user! See https://getcomposer.org/root for details</warning>');

if ($io->isInteractive()) {
                            if (!$io->askConfirmation('<info>Continue as root/super user</info> [<comment>yes</comment>]? ')) {
                                return 1;
                            }
                        }
                    }
                    if ($uid = (int) Platform::getEnv('SUDO_UID')) {
                        // Silently clobber any sudo credentials on the invoking user to avoid privilege escalations later on
                        // ref. https://github.com/composer/composer/issues/5119
                        Silencer::call('exec', "sudo -u \\#{$uid} sudo -K > /dev/null 2>&1");
                    }
                }
                // Silently clobber any remaining sudo leases on the current user as well to avoid privilege escalations
                Silencer::call('exec', 'sudo -K > /dev/null 2>&1');
            }

// Check system temp folder for usability as it can cause weird runtime issues otherwise
            Silencer::call(function () use ($io) {
                $tempfile = sys_get_temp_dir() . '/temp-' . md5(microtime());
                if (!(file_put_contents($tempfile, __FILE__) && (file_get_contents($tempfile) == __FILE__) && unlink($tempfile) && !file_exists($tempfile))) {
                    $io->writeError(sprintf('<error>PHP temp directory (%s) does not exist or is not writable to Composer. Set sys_temp_dir in your php.ini</error>', sys_get_temp_dir()));
                }
            });

// add non-standard scripts as own commands
            $file = Factory::getComposerFile();
            if (is_file($file) && Filesystem::isReadable($file) && is_array($composer = json_decode(file_get_contents($file), true))) {
                if (isset($composer['scripts']) && is_array($composer['scripts'])) {
                    foreach ($composer['scripts'] as $script => $dummy) {
                        if (!defined('Composer\Script\ScriptEvents::'.str_replace('-', '_', strtoupper($script)))) {
                            if ($this->has($script)) {
                                $io->writeError('<warning>A script named '.$script.' would override a Composer command and has been skipped</warning>');
                            } else {
                                $description = null;

if (isset($composer['scripts-descriptions'][$script])) {
                                    $description = $composer['scripts-descriptions'][$script];
                                }

$this->add(new Command\ScriptAliasCommand($script, $description));
                            }
                        }
                    }
                }
            }
        }

try {
            if ($input->hasParameterOption('--profile')) {
                $startTime = microtime(true);
                $this->io->enableDebugging($startTime);
            }

$result = parent::doRun($input, $output);

// chdir back to $oldWorkingDir if set
            if (isset($oldWorkingDir)) {
                Silencer::call('chdir', $oldWorkingDir);
            }

if (isset($startTime)) {
                $io->writeError('<info>Memory usage: '.round(memory_get_usage() / 1024 / 1024, 2).'MiB (peak: '.round(memory_get_peak_usage() / 1024 / 1024, 2).'MiB), time: '.round(microtime(true) - $startTime, 2).'s');
            }

restore_error_handler();

return $result;
        } catch (ScriptExecutionException $e) {
            return $e->getCode();
        } catch (\Exception $e) {
            $ghe = new GithubActionError($this->io);
            $ghe->emit($e->getMessage());

$this->hintCommonErrors($e);

restore_error_handler();

throw $e;
        }
    }

/**
     * @param  InputInterface    $input
     * @throws \RuntimeException
     * @return string
     */
    private function getNewWorkingDir(InputInterface $input)
    {
        $workingDir = $input->getParameterOption(array('--working-dir', '-d'));
        if (false !== $workingDir && !is_dir($workingDir)) {
            throw new \RuntimeException('Invalid working directory specified, '.$workingDir.' does not exist.');
        }

return $workingDir;
    }

/**
     * @return void
     */
    private function hintCommonErrors(\Exception $exception)
    {
        $io = $this->getIO();

Silencer::suppress();
        try {
            $composer = $this->getComposer(false, true);
            if ($composer) {
                $config = $composer->getConfig();

$minSpaceFree = 1024 * 1024;
                if ((($df = disk_free_space($dir = $config->get('home'))) !== false && $df < $minSpaceFree)
                    || (($df = disk_free_space($dir = $config->get('vendor-dir'))) !== false && $df < $minSpaceFree)
                    || (($df = disk_free_space($dir = sys_get_temp_dir())) !== false && $df < $minSpaceFree)
                ) {
                    $io->writeError('<error>The disk hosting '.$dir.' is full, this may be the cause of the following exception</error>', true, IOInterface::QUIET);
                }
            }
        } catch (\Exception $e) {
        }
        Silencer::restore();

if (Platform::isWindows() && false !== strpos($exception->getMessage(), 'The system cannot find the path specified')) {
            $io->writeError('<error>The following exception may be caused by a stale entry in your cmd.exe AutoRun</error>', true, IOInterface::QUIET);
            $io->writeError('<error>Check https://getcomposer.org/doc/articles/troubleshooting.md#-the-system-cannot-find-the-path-specified-windows- for details</error>', true, IOInterface::QUIET);
        }

if (false !== strpos($exception->getMessage(), 'fork failed - Cannot allocate memory')) {
            $io->writeError('<error>The following exception is caused by a lack of memory or swap, or not having swap configured</error>', true, IOInterface::QUIET);
            $io->writeError('<error>Check https://getcomposer.org/doc/articles/troubleshooting.md#proc-open-fork-failed-errors for details</error>', true, IOInterface::QUIET);
        }

if ($exception instanceof ProcessTimedOutException) {
            $io->writeError('<error>The following exception is caused by a process timeout</error>', true, IOInterface::QUIET);
            $io->writeError('<error>Check https://getcomposer.org/doc/06-config.md#process-timeout for details</error>', true, IOInterface::QUIET);
        }

if ($hints = HttpDownloader::getExceptionHints($exception)) {
            foreach ($hints as $hint) {
                $io->writeError($hint, true, IOInterface::QUIET);
            }
        }
    }

/**
     * @param  bool                    $required
     * @param  bool|null               $disablePlugins
     * @param  bool|null               $disableScripts
     * @throws JsonValidationException
     * @throws \InvalidArgumentException
     * @return ?\Composer\Composer If $required is true then the return value is guaranteed
     */
    public function getComposer($required = true, $disablePlugins = null, $disableScripts = null)
    {
        if (null === $disablePlugins) {
            $disablePlugins = $this->disablePluginsByDefault;
        }
        if (null === $disableScripts) {
            $disableScripts = $this->disableScriptsByDefault;
        }

if (null === $this->composer) {
            try {
                $this->composer = Factory::create($this->io, null, $disablePlugins, $disableScripts);
            } catch (\InvalidArgumentException $e) {
                if ($required) {
                    $this->io->writeError($e->getMessage());
                    // TODO composer 2.3 simplify to $this->areExceptionsCaught()
                    if (!method_exists($this, 'areExceptionsCaught') || $this->areExceptionsCaught()) {
                        exit(1);
                    }
                    throw $e;
                }
            } catch (JsonValidationException $e) {
                if ($required) {
                    throw $e;
                }
            }
        }

return $this->composer;
    }

/**
     * Removes the cached composer instance
     *
     * @return void
     */
    public function resetComposer()
    {
        $this->composer = null;
        if (method_exists($this->getIO(), 'resetAuthentications')) {
            $this->getIO()->resetAuthentications();
        }
    }

/**
     * @return IOInterface
     */
    public function getIO()
    {
        return $this->io;
    }

/**
     * @return string
     */
    public function getHelp()
    {
        return self::$logo . parent::getHelp();
    }

/**
     * Initializes all the composer commands.
     * @return \Symfony\Component\Console\Command\Command[]
     */
    protected function getDefaultCommands()
    {
        $commands = array_merge(parent::getDefaultCommands(), array(
            new Command\AboutCommand(),
            new Command\ConfigCommand(),
            new Command\DependsCommand(),
            new Command\ProhibitsCommand(),
            new Command\InitCommand(),
            new Command\InstallCommand(),
            new Command\CreateProjectCommand(),
            new Command\UpdateCommand(),
            new Command\SearchCommand(),
            new Command\ValidateCommand(),
            new Command\ShowCommand(),
            new Command\SuggestsCommand(),
            new Command\RequireCommand(),
            new Command\DumpAutoloadCommand(),
            new Command\StatusCommand(),
            new Command\ArchiveCommand(),
            new Command\DiagnoseCommand(),
            new Command\RunScriptCommand(),
            new Command\LicensesCommand(),
            new Command\GlobalCommand(),
            new Command\ClearCacheCommand(),
            new Command\RemoveCommand(),
            new Command\HomeCommand(),
            new Command\ExecCommand(),
            new Command\OutdatedCommand(),
            new Command\CheckPlatformReqsCommand(),
            new Command\FundCommand(),
            new Command\ReinstallCommand(),
        ));

if (strpos(__FILE__, 'phar:') === 0) {
            $commands[] = new Command\SelfUpdateCommand();
        }

return $commands;
    }

/**
     * @return string
     */
    public function getLongVersion()
    {
        if (Composer::BRANCH_ALIAS_VERSION && Composer::BRANCH_ALIAS_VERSION !== '@package_branch_alias_version'.'@') {
            return sprintf(
                '<info>%s</info> version <comment>%s (%s)</comment> %s',
                $this->getName(),
                Composer::BRANCH_ALIAS_VERSION,
                $this->getVersion(),
                Composer::RELEASE_DATE
            );
        }

return parent::getLongVersion() . ' ' . Composer::RELEASE_DATE;
    }

/**
     * @return InputDefinition
     */
    protected function getDefaultInputDefinition()
    {
        $definition = parent::getDefaultInputDefinition();
        $definition->addOption(new InputOption('--profile', null, InputOption::VALUE_NONE, 'Display timing and memory usage information'));
        $definition->addOption(new InputOption('--no-plugins', null, InputOption::VALUE_NONE, 'Whether to disable plugins.'));
        $definition->addOption(new InputOption('--no-scripts', null, InputOption::VALUE_NONE, 'Skips the execution of all scripts defined in composer.json file.'));
        $definition->addOption(new InputOption('--working-dir', '-d', InputOption::VALUE_REQUIRED, 'If specified, use the given directory as working directory.'));
        $definition->addOption(new InputOption('--no-cache', null, InputOption::VALUE_NONE, 'Prevent use of the cache'));

return $definition;
    }

/**
     * @return Command\BaseCommand[]
     */
    private function getPluginCommands()
    {
        $commands = array();

$composer = $this->getComposer(false, false);
        if (null === $composer) {
            $composer = Factory::createGlobal($this->io);
        }

if (null !== $composer) {
            $pm = $composer->getPluginManager();
            foreach ($pm->getPluginCapabilities('Composer\Plugin\Capability\CommandProvider', array('composer' => $composer, 'io' => $this->io)) as $capability) {
                $newCommands = $capability->getCommands();
                if (!is_array($newCommands)) {
                    throw new \UnexpectedValueException('Plugin capability '.get_class($capability).' failed to return an array from getCommands');
                }
                foreach ($newCommands as $command) {
                    if (!$command instanceof Command\BaseCommand) {
                        throw new \UnexpectedValueException('Plugin capability '.get_class($capability).' returned an invalid value, we expected an array of Composer\Command\BaseCommand objects');
                    }
                }
                $commands = array_merge($commands, $newCommands);
            }
        }

return $commands;
    }

/**
     * Get the working directory at startup time
     *
     * @return string
     */
    public function getInitialWorkingDirectory()
    {
        return $this->initialWorkingDirectory;
    }

/**
     * @return 'prompt'|bool
     */
    private function getUseParentDirConfigValue()
    {
        $config = Factory::createConfig($this->io);

return $config->get('use-parent-dir');
    }
}
<?php

namespace Composer\Console;

use Composer\IO\IOInterface;
use Composer\Util\Platform;

final class GithubActionError
{
    /**
     * @var IOInterface
     */
    protected $io;

public function __construct(IOInterface  $io)
    {
        $this->io = $io;
    }

/**
     * @param string      $message
     * @param null|string $file
     * @param null|int    $line
     *
     * @return void
     */
    public function emit($message, $file = null, $line = null)
    {
        if (Platform::getEnv('GITHUB_ACTIONS') && !Platform::getEnv('COMPOSER_TESTS_ARE_RUNNING')) {
            $message = $this->escapeData($message);

if ($file && $line) {
                $file = $this->escapeProperty($file);
                $this->io->write("::error file=". $file .",line=". $line ."::". $message);
            } elseif ($file) {
                $file = $this->escapeProperty($file);
                $this->io->write("::error file=". $file ."::". $message);
            } else {
                $this->io->write("::error ::". $message);
            }
        }
    }
    
    /**
     * @param string $data
     * @return string
     */
    private function escapeData($data) {
        // see https://github.com/actions/toolkit/blob/4f7fb6513a355689f69f0849edeb369a4dc81729/packages/core/src/command.ts#L80-L85
        $data = str_replace("%", '%25', $data);
        $data = str_replace("\r", '%0D', $data);
        $data = str_replace("\n", '%0A', $data);

return $data;
    }
    
    /**
     * @param string $property
     * @return string
     */
    private function escapeProperty($property) {
        // see https://github.com/actions/toolkit/blob/4f7fb6513a355689f69f0849edeb369a4dc81729/packages/core/src/command.ts#L87-L94
        $property = str_replace("%", '%25', $property);
        $property = str_replace("\r", '%0D', $property);
        $property = str_replace("\n", '%0A', $property);
        $property = str_replace(":", '%3A', $property);
        $property = str_replace(",", '%2C', $property);

return $property;
    }
}
<?php

namespace Composer\Command;

use Composer\Script\Event as ScriptEvent;
use Composer\Script\ScriptEvents;
use Composer\Util\ProcessExecutor;
use Composer\Util\Platform;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * @author Fabien Potencier <fabien.potencier@gmail.com>
 */
class RunScriptCommand extends BaseCommand
{
    /**
     * @var string[] Array with command events
     */
    protected $scriptEvents = array(
        ScriptEvents::PRE_INSTALL_CMD,
        ScriptEvents::POST_INSTALL_CMD,
        ScriptEvents::PRE_UPDATE_CMD,
        ScriptEvents::POST_UPDATE_CMD,
        ScriptEvents::PRE_STATUS_CMD,
        ScriptEvents::POST_STATUS_CMD,
        ScriptEvents::POST_ROOT_PACKAGE_INSTALL,
        ScriptEvents::POST_CREATE_PROJECT_CMD,
        ScriptEvents::PRE_ARCHIVE_CMD,
        ScriptEvents::POST_ARCHIVE_CMD,
        ScriptEvents::PRE_AUTOLOAD_DUMP,
        ScriptEvents::POST_AUTOLOAD_DUMP,
    );

/**
     * @return void
     */
    protected function configure()
    {
        $this
            ->setName('run-script')
            ->setAliases(array('run'))
            ->setDescription('Runs the scripts defined in composer.json.')
            ->setDefinition(array(
                new InputArgument('script', InputArgument::OPTIONAL, 'Script name to run.'),
                new InputArgument('args', InputArgument::IS_ARRAY | InputArgument::OPTIONAL, ''),
                new InputOption('timeout', null, InputOption::VALUE_REQUIRED, 'Sets script timeout in seconds, or 0 for never.'),
                new InputOption('dev', null, InputOption::VALUE_NONE, 'Sets the dev mode.'),
                new InputOption('no-dev', null, InputOption::VALUE_NONE, 'Disables the dev mode.'),
                new InputOption('list', 'l', InputOption::VALUE_NONE, 'List scripts.'),
            ))
            ->setHelp(
                <<<EOT
The <info>run-script</info> command runs scripts defined in composer.json:

<info>php composer.phar run-script post-update-cmd</info>

Read more at https://getcomposer.org/doc/03-cli.md#run-script
EOT
            )
        ;
    }

protected function execute(InputInterface $input, OutputInterface $output)
    {
        if ($input->getOption('list')) {
            return $this->listScripts($output);
        }
        if (!$input->getArgument('script')) {
            throw new \RuntimeException('Missing required argument "script"');
        }

$script = $input->getArgument('script');
        if (!in_array($script, $this->scriptEvents)) {
            if (defined('Composer\Script\ScriptEvents::'.str_replace('-', '_', strtoupper($script)))) {
                throw new \InvalidArgumentException(sprintf('Script "%s" cannot be run with this command', $script));
            }
        }

$composer = $this->getComposer();
        $devMode = $input->getOption('dev') || !$input->getOption('no-dev');
        $event = new ScriptEvent($script, $composer, $this->getIO(), $devMode);
        $hasListeners = $composer->getEventDispatcher()->hasEventListeners($event);
        if (!$hasListeners) {
            throw new \InvalidArgumentException(sprintf('Script "%s" is not defined in this package', $script));
        }

$args = $input->getArgument('args');

if (null !== $timeout = $input->getOption('timeout')) {
            if (!ctype_digit($timeout)) {
                throw new \RuntimeException('Timeout value must be numeric and positive if defined, or 0 for forever');
            }
            // Override global timeout set before in Composer by environment or config
            ProcessExecutor::setTimeout((int) $timeout);
        }

Platform::putEnv('COMPOSER_DEV_MODE', $devMode ? '1' : '0');

return $composer->getEventDispatcher()->dispatchScript($script, $devMode, $args);
    }

/**
     * @return int
     */
    protected function listScripts(OutputInterface $output)
    {
        $scripts = $this->getComposer()->getPackage()->getScripts();

if (!count($scripts)) {
            return 0;
        }

$io = $this->getIO();
        $io->writeError('<info>scripts:</info>');
        $table = array();
        foreach ($scripts as $name => $script) {
            $description = '';
            try {
                $cmd = $this->getApplication()->find($name);
                if ($cmd instanceof ScriptAliasCommand) {
                    $description = $cmd->getDescription();
                }
            } catch (\Symfony\Component\Console\Exception\CommandNotFoundException $e) {
                // ignore scripts that have no command associated, like native Composer script listeners
            }
            $table[] = array('  '.$name, $description);
        }

$this->renderTable($table, $output);

return 0;
    }
}
<?php

namespace Composer\Command;

use Composer\Factory;
use Composer\Filter\PlatformRequirementFilter\IgnoreAllPlatformRequirementFilter;
use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterFactory;
use Composer\Json\JsonFile;
use Composer\Json\JsonValidationException;
use Composer\Package\BasePackage;
use Composer\Package\CompletePackageInterface;
use Composer\Package\Package;
use Composer\Package\PackageInterface;
use Composer\Package\Version\VersionParser;
use Composer\Package\Version\VersionSelector;
use Composer\Pcre\Preg;
use Composer\Repository\CompositeRepository;
use Composer\Repository\PlatformRepository;
use Composer\Repository\RepositoryFactory;
use Composer\Repository\RepositorySet;
use Composer\Util\Filesystem;
use Composer\Util\ProcessExecutor;
use Composer\Semver\Constraint\Constraint;
use Composer\Util\Silencer;
use Symfony\Component\Console\Input\ArrayInput;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Process\ExecutableFinder;
use Symfony\Component\Process\Process;
use Symfony\Component\Console\Helper\FormatterHelper;

/**
 * @author Justin Rainbow <justin.rainbow@gmail.com>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class InitCommand extends BaseCommand
{
    /** @var ?CompositeRepository */
    protected $repos;

/** @var array<string, string> */
    private $gitConfig;

/** @var RepositorySet[] */
    private $repositorySets;

/**
     * @inheritDoc
     *
     * @return void
     */
    protected function configure()
    {
        $this
            ->setName('init')
            ->setDescription('Creates a basic composer.json file in current directory.')
            ->setDefinition(array(
                new InputOption('name', null, InputOption::VALUE_REQUIRED, 'Name of the package'),
                new InputOption('description', null, InputOption::VALUE_REQUIRED, 'Description of package'),
                new InputOption('author', null, InputOption::VALUE_REQUIRED, 'Author name of package'),
                // new InputOption('version', null, InputOption::VALUE_NONE, 'Version of package'),
                new InputOption('type', null, InputOption::VALUE_OPTIONAL, 'Type of package (e.g. library, project, metapackage, composer-plugin)'),
                new InputOption('homepage', null, InputOption::VALUE_REQUIRED, 'Homepage of package'),
                new InputOption('require', null, InputOption::VALUE_IS_ARRAY | InputOption::VALUE_REQUIRED, 'Package to require with a version constraint, e.g. foo/bar:1.0.0 or foo/bar=1.0.0 or "foo/bar 1.0.0"'),
                new InputOption('require-dev', null, InputOption::VALUE_IS_ARRAY | InputOption::VALUE_REQUIRED, 'Package to require for development with a version constraint, e.g. foo/bar:1.0.0 or foo/bar=1.0.0 or "foo/bar 1.0.0"'),
                new InputOption('stability', 's', InputOption::VALUE_REQUIRED, 'Minimum stability (empty or one of: '.implode(', ', array_keys(BasePackage::$stabilities)).')'),
                new InputOption('license', 'l', InputOption::VALUE_REQUIRED, 'License of package'),
                new InputOption('repository', null, InputOption::VALUE_REQUIRED | InputOption::VALUE_IS_ARRAY, 'Add custom repositories, either by URL or using JSON arrays'),
                new InputOption('autoload', 'a', InputOption::VALUE_REQUIRED, 'Add PSR-4 autoload mapping. Maps your package\'s namespace to the provided directory. (Expects a relative path, e.g. src/)'),
            ))
            ->setHelp(
                <<<EOT
The <info>init</info> command creates a basic composer.json file
in the current directory.

<info>php composer.phar init</info>

Read more at https://getcomposer.org/doc/03-cli.md#init
EOT
            )
        ;
    }

/**
     * @inheritDoc
     *
     * @return int
     * @throws \Seld\JsonLint\ParsingException
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $io = $this->getIO();

$allowlist = array('name', 'description', 'author', 'type', 'homepage', 'require', 'require-dev', 'stability', 'license', 'autoload');
        $options = array_filter(array_intersect_key($input->getOptions(), array_flip($allowlist)));

if (isset($options['name']) && !Preg::isMatch('{^[a-z0-9_.-]+/[a-z0-9_.-]+$}D', $options['name'])) {
            throw new \InvalidArgumentException(
                'The package name '.$options['name'].' is invalid, it should be lowercase and have a vendor name, a forward slash, and a package name, matching: [a-z0-9_.-]+/[a-z0-9_.-]+'
            );
        }

if (isset($options['author'])) {
            $options['authors'] = $this->formatAuthors($options['author']);
            unset($options['author']);
        }

$repositories = $input->getOption('repository');
        if ($repositories) {
            $config = Factory::createConfig($io);
            foreach ($repositories as $repo) {
                $options['repositories'][] = RepositoryFactory::configFromString($io, $config, $repo, true);
            }
        }

if (isset($options['stability'])) {
            $options['minimum-stability'] = $options['stability'];
            unset($options['stability']);
        }

$options['require'] = isset($options['require']) ? $this->formatRequirements($options['require']) : new \stdClass;
        if (array() === $options['require']) {
            $options['require'] = new \stdClass;
        }

if (isset($options['require-dev'])) {
            $options['require-dev'] = $this->formatRequirements($options['require-dev']);
            if (array() === $options['require-dev']) {
                $options['require-dev'] = new \stdClass;
            }
        }

// --autoload - create autoload object
        $autoloadPath = null;
        if (isset($options['autoload'])) {
            $autoloadPath = $options['autoload'];
            $namespace = $this->namespaceFromPackageName($input->getOption('name'));
            $options['autoload'] = (object) array(
                'psr-4' => array(
                    $namespace . '\\' => $autoloadPath,
                ),
            );
        }

$file = new JsonFile(Factory::getComposerFile());
        $json = JsonFile::encode($options);

if ($input->isInteractive()) {
            $io->writeError(array('', $json, ''));
            if (!$io->askConfirmation('Do you confirm generation [<comment>yes</comment>]? ')) {
                $io->writeError('<error>Command aborted</error>');

return 1;
            }
        } else {
            if (json_encode($options) === '{"require":{}}') {
                throw new \RuntimeException('You have to run this command in interactive mode, or specify at least some data using --name, --require, etc.');
            }

$io->writeError('Writing '.$file->getPath());
        }

$file->write($options);
        try {
            $file->validateSchema(JsonFile::LAX_SCHEMA);
        } catch (JsonValidationException $e) {
            $io->writeError('<error>Schema validation error, aborting</error>');
            $errors = ' - ' . implode(PHP_EOL . ' - ', $e->getErrors());
            $io->writeError($e->getMessage() . ':' . PHP_EOL . $errors);
            Silencer::call('unlink', $file->getPath());

return 1;
        }

// --autoload - Create src folder
        if ($autoloadPath) {
            $filesystem = new Filesystem();
            $filesystem->ensureDirectoryExists($autoloadPath);

// dump-autoload only for projects without added dependencies.
            if (!$this->hasDependencies($options)) {
                $this->runDumpAutoloadCommand($output);
            }
        }

if ($input->isInteractive() && is_dir('.git')) {
            $ignoreFile = realpath('.gitignore');

if (false === $ignoreFile) {
                $ignoreFile = realpath('.') . '/.gitignore';
            }

if (!$this->hasVendorIgnore($ignoreFile)) {
                $question = 'Would you like the <info>vendor</info> directory added to your <info>.gitignore</info> [<comment>yes</comment>]? ';

if ($io->askConfirmation($question)) {
                    $this->addVendorIgnore($ignoreFile);
                }
            }
        }

$question = 'Would you like to install dependencies now [<comment>yes</comment>]? ';
        if ($input->isInteractive() && $this->hasDependencies($options) && $io->askConfirmation($question)) {
            $this->updateDependencies($output);
        }

// --autoload - Show post-install configuration info
        if ($autoloadPath) {
            $namespace = $this->namespaceFromPackageName($input->getOption('name'));

$io->writeError('PSR-4 autoloading configured. Use "<comment>namespace '.$namespace.';</comment>" in '.$autoloadPath);
            $io->writeError('Include the Composer autoloader with: <comment>require \'vendor/autoload.php\';</comment>');
        }

return 0;
    }

/**
     * @inheritDoc
     *
     * @return void
     */
    protected function interact(InputInterface $input, OutputInterface $output)
    {
        $git = $this->getGitConfig();
        $io = $this->getIO();
        /** @var FormatterHelper $formatter */
        $formatter = $this->getHelperSet()->get('formatter');

// initialize repos if configured
        $repositories = $input->getOption('repository');
        if ($repositories) {
            $config = Factory::createConfig($io);
            $repos = array(new PlatformRepository);
            $createDefaultPackagistRepo = true;
            foreach ($repositories as $repo) {
                $repoConfig = RepositoryFactory::configFromString($io, $config, $repo, true);
                if (
                    (isset($repoConfig['packagist']) && $repoConfig === array('packagist' => false))
                    || (isset($repoConfig['packagist.org']) && $repoConfig === array('packagist.org' => false))
                ) {
                    $createDefaultPackagistRepo = false;
                    continue;
                }
                $repos[] = RepositoryFactory::createRepo($io, $config, $repoConfig);
            }

if ($createDefaultPackagistRepo) {
                $repos[] = RepositoryFactory::createRepo($io, $config, array(
                    'type' => 'composer',
                    'url' => 'https://repo.packagist.org',
                ));
            }

$this->repos = new CompositeRepository($repos);
            unset($repos, $config, $repositories);
        }

$io->writeError(array(
            '',
            $formatter->formatBlock('Welcome to the Composer config generator', 'bg=blue;fg=white', true),
            '',
        ));

// namespace
        $io->writeError(array(
            '',
            'This command will guide you through creating your composer.json config.',
            '',
        ));

$cwd = realpath(".");

if (!$name = $input->getOption('name')) {
            $name = basename($cwd);
            $name = Preg::replace('{(?:([a-z])([A-Z])|([A-Z])([A-Z][a-z]))}', '\\1\\3-\\2\\4', $name);
            $name = strtolower($name);
            if (!empty($_SERVER['COMPOSER_DEFAULT_VENDOR'])) {
                $name = $_SERVER['COMPOSER_DEFAULT_VENDOR'] . '/' . $name;
            } elseif (isset($git['github.user'])) {
                $name = $git['github.user'] . '/' . $name;
            } elseif (!empty($_SERVER['USERNAME'])) {
                $name = $_SERVER['USERNAME'] . '/' . $name;
            } elseif (!empty($_SERVER['USER'])) {
                $name = $_SERVER['USER'] . '/' . $name;
            } elseif (get_current_user()) {
                $name = get_current_user() . '/' . $name;
            } else {
                // package names must be in the format foo/bar
                $name .= '/' . $name;
            }
            $name = strtolower($name);
        }

$name = $io->askAndValidate(
            'Package name (<vendor>/<name>) [<comment>'.$name.'</comment>]: ',
            function ($value) use ($name) {
                if (null === $value) {
                    return $name;
                }

if (!Preg::isMatch('{^[a-z0-9_.-]+/[a-z0-9_.-]+$}D', $value)) {
                    throw new \InvalidArgumentException(
                        'The package name '.$value.' is invalid, it should be lowercase and have a vendor name, a forward slash, and a package name, matching: [a-z0-9_.-]+/[a-z0-9_.-]+'
                    );
                }

return $value;
            },
            null,
            $name
        );
        $input->setOption('name', $name);

$description = $input->getOption('description') ?: false;
        $description = $io->ask(
            'Description [<comment>'.$description.'</comment>]: ',
            $description
        );
        $input->setOption('description', $description);

if (null === $author = $input->getOption('author')) {
            if (!empty($_SERVER['COMPOSER_DEFAULT_AUTHOR'])) {
                $author_name = $_SERVER['COMPOSER_DEFAULT_AUTHOR'];
            } elseif (isset($git['user.name'])) {
                $author_name = $git['user.name'];
            }

if (!empty($_SERVER['COMPOSER_DEFAULT_EMAIL'])) {
                $author_email = $_SERVER['COMPOSER_DEFAULT_EMAIL'];
            } elseif (isset($git['user.email'])) {
                $author_email = $git['user.email'];
            }

if (isset($author_name, $author_email)) {
                $author = sprintf('%s <%s>', $author_name, $author_email);
            }
        }

$self = $this;
        $author = $io->askAndValidate(
            'Author [<comment>'.$author.'</comment>, n to skip]: ',
            function ($value) use ($self, $author) {
                if ($value === 'n' || $value === 'no') {
                    return;
                }
                $value = $value ?: $author;
                $author = $self->parseAuthorString($value);

return sprintf('%s <%s>', $author['name'], $author['email']);
            },
            null,
            $author
        );
        $input->setOption('author', $author);

$minimumStability = $input->getOption('stability') ?: null;
        $minimumStability = $io->askAndValidate(
            'Minimum Stability [<comment>'.$minimumStability.'</comment>]: ',
            function ($value) use ($minimumStability) {
                if (null === $value) {
                    return $minimumStability;
                }

if (!isset(BasePackage::$stabilities[$value])) {
                    throw new \InvalidArgumentException(
                        'Invalid minimum stability "'.$value.'". Must be empty or one of: '.
                        implode(', ', array_keys(BasePackage::$stabilities))
                    );
                }

return $value;
            },
            null,
            $minimumStability
        );
        $input->setOption('stability', $minimumStability);

$type = $input->getOption('type') ?: false;
        $type = $io->ask(
            'Package Type (e.g. library, project, metapackage, composer-plugin) [<comment>'.$type.'</comment>]: ',
            $type
        );
        $input->setOption('type', $type);

if (null === $license = $input->getOption('license')) {
            if (!empty($_SERVER['COMPOSER_DEFAULT_LICENSE'])) {
                $license = $_SERVER['COMPOSER_DEFAULT_LICENSE'];
            }
        }

$license = $io->ask(
            'License [<comment>'.$license.'</comment>]: ',
            $license
        );
        $input->setOption('license', $license);

$io->writeError(array('', 'Define your dependencies.', ''));

// prepare to resolve dependencies
        $repos = $this->getRepos();
        $preferredStability = $minimumStability ?: 'stable';
        $platformRepo = null;
        if ($repos instanceof CompositeRepository) {
            foreach ($repos->getRepositories() as $candidateRepo) {
                if ($candidateRepo instanceof PlatformRepository) {
                    $platformRepo = $candidateRepo;
                    break;
                }
            }
        }

$question = 'Would you like to define your dependencies (require) interactively [<comment>yes</comment>]? ';
        $require = $input->getOption('require');
        $requirements = array();
        if ($require || $io->askConfirmation($question)) {
            $requirements = $this->determineRequirements($input, $output, $require, $platformRepo, $preferredStability);
        }
        $input->setOption('require', $requirements);

$question = 'Would you like to define your dev dependencies (require-dev) interactively [<comment>yes</comment>]? ';
        $requireDev = $input->getOption('require-dev');
        $devRequirements = array();
        if ($requireDev || $io->askConfirmation($question)) {
            $devRequirements = $this->determineRequirements($input, $output, $requireDev, $platformRepo, $preferredStability);
        }
        $input->setOption('require-dev', $devRequirements);

// --autoload - input and validation
        $autoload = $input->getOption('autoload') ?: 'src/';
        $namespace = $this->namespaceFromPackageName($input->getOption('name'));
        $autoload = $io->askAndValidate(
            'Add PSR-4 autoload mapping? Maps namespace "'.$namespace.'" to the entered relative path. [<comment>'.$autoload.'</comment>, n to skip]: ',
            function ($value) use ($autoload) {
                if (null === $value) {
                    return $autoload;
                }

if ($value === 'n' || $value === 'no') {
                    return;
                }

$value = $value ?: $autoload;

if (!Preg::isMatch('{^[^/][A-Za-z0-9\-_/]+/$}', $value)) {
                    throw new \InvalidArgumentException(sprintf(
                        'The src folder name "%s" is invalid. Please add a relative path with tailing forward slash. [A-Za-z0-9_-/]+/',
                        $value
                    ));
                }

return $value;
            },
            null,
            $autoload
        );
        $input->setOption('autoload', $autoload);
    }

/**
     * @private
     * @param  string $author
     * @return array{name: string, email: string}
     */
    public function parseAuthorString($author)
    {
        if (Preg::isMatch('/^(?P<name>[- .,\p{L}\p{N}\p{Mn}\'’"()]+) <(?P<email>.+?)>$/u', $author, $match)) {
            if ($this->isValidEmail($match['email'])) {
                return array(
                    'name' => trim($match['name']),
                    'email' => $match['email'],
                );
            }
        }

throw new \InvalidArgumentException(
            'Invalid author string.  Must be in the format: '.
            'John Smith <john@example.com>'
        );
    }

/**
     * @return CompositeRepository
     */
    protected function getRepos()
    {
        if (!$this->repos) {
            $this->repos = new CompositeRepository(array_merge(
                array(new PlatformRepository),
                RepositoryFactory::defaultRepos($this->getIO())
            ));
        }

return $this->repos;
    }

/**
     * @param array<string> $requires
     * @param PlatformRepository|null $platformRepo
     * @param string $preferredStability
     * @param bool $checkProvidedVersions
     * @param bool $fixed
     *
     * @return array<string>
     * @throws \Exception
     */
    final protected function determineRequirements(InputInterface $input, OutputInterface $output, $requires = array(), PlatformRepository $platformRepo = null, $preferredStability = 'stable', $checkProvidedVersions = true, $fixed = false)
    {
        if ($requires) {
            $requires = $this->normalizeRequirements($requires);
            $result = array();
            $io = $this->getIO();

foreach ($requires as $requirement) {
                if (!isset($requirement['version'])) {
                    // determine the best version automatically
                    list($name, $version) = $this->findBestVersionAndNameForPackage($input, $requirement['name'], $platformRepo, $preferredStability, null, null, $fixed);
                    $requirement['version'] = $version;

// replace package name from packagist.org
                    $requirement['name'] = $name;

$io->writeError(sprintf(
                        'Using version <info>%s</info> for <info>%s</info>',
                        $requirement['version'],
                        $requirement['name']
                    ));
                } else {
                    // check that the specified version/constraint exists before we proceed
                    list($name) = $this->findBestVersionAndNameForPackage($input, $requirement['name'], $platformRepo, $preferredStability, $checkProvidedVersions ? $requirement['version'] : null, 'dev', $fixed);

// replace package name from packagist.org
                    $requirement['name'] = $name;
                }

$result[] = $requirement['name'] . ' ' . $requirement['version'];
            }

return $result;
        }

$versionParser = new VersionParser();

// Collect existing packages
        $composer = $this->getComposer(false);
        $installedRepo = $composer ? $composer->getRepositoryManager()->getLocalRepository() : null;
        $existingPackages = array();
        if ($installedRepo) {
            foreach ($installedRepo->getPackages() as $package) {
                $existingPackages[] = $package->getName();
            }
        }
        unset($composer, $installedRepo);

$io = $this->getIO();
        while (null !== $package = $io->ask('Search for a package: ')) {
            $matches = $this->getRepos()->search($package);

if (count($matches)) {
                // Remove existing packages from search results.
                foreach ($matches as $position => $foundPackage) {
                    if (in_array($foundPackage['name'], $existingPackages, true)) {
                        unset($matches[$position]);
                    }
                }
                $matches = array_values($matches);

$exactMatch = null;
                $choices = array();
                foreach ($matches as $position => $foundPackage) {
                    $abandoned = '';
                    if (isset($foundPackage['abandoned'])) {
                        if (is_string($foundPackage['abandoned'])) {
                            $replacement = sprintf('Use %s instead', $foundPackage['abandoned']);
                        } else {
                            $replacement = 'No replacement was suggested';
                        }
                        $abandoned = sprintf('<warning>Abandoned. %s.</warning>', $replacement);
                    }

$choices[] = sprintf(' <info>%5s</info> %s %s', "[$position]", $foundPackage['name'], $abandoned);
                    if ($foundPackage['name'] === $package) {
                        $exactMatch = true;
                        break;
                    }
                }

// no match, prompt which to pick
                if (!$exactMatch) {
                    $io->writeError(array(
                        '',
                        sprintf('Found <info>%s</info> packages matching <info>%s</info>', count($matches), $package),
                        '',
                    ));

$io->writeError($choices);
                    $io->writeError('');

$validator = function ($selection) use ($matches, $versionParser) {
                        if ('' === $selection) {
                            return false;
                        }

if (is_numeric($selection) && isset($matches[(int) $selection])) {
                            $package = $matches[(int) $selection];

return $package['name'];
                        }

if (Preg::isMatch('{^\s*(?P<name>[\S/]+)(?:\s+(?P<version>\S+))?\s*$}', $selection, $packageMatches)) {
                            if (isset($packageMatches['version'])) {
                                // parsing `acme/example ~2.3`

// validate version constraint
                                $versionParser->parseConstraints($packageMatches['version']);

return $packageMatches['name'].' '.$packageMatches['version'];
                            }

// parsing `acme/example`
                            return $packageMatches['name'];
                        }

throw new \Exception('Not a valid selection');
                    };

$package = $io->askAndValidate(
                        'Enter package # to add, or the complete package name if it is not listed: ',
                        $validator,
                        3,
                        false
                    );
                }

// no constraint yet, determine the best version automatically
                if (false !== $package && false === strpos($package, ' ')) {
                    $validator = function ($input) {
                        $input = trim($input);

return $input ?: false;
                    };

$constraint = $io->askAndValidate(
                        'Enter the version constraint to require (or leave blank to use the latest version): ',
                        $validator,
                        3,
                        false
                    );

if (false === $constraint) {
                        list(, $constraint) = $this->findBestVersionAndNameForPackage($input, $package, $platformRepo, $preferredStability);

$io->writeError(sprintf(
                            'Using version <info>%s</info> for <info>%s</info>',
                            $constraint,
                            $package
                        ));
                    }

$package .= ' '.$constraint;
                }

if (false !== $package) {
                    $requires[] = $package;
                    $existingPackages[] = substr($package, 0, strpos($package, ' '));
                }
            }
        }

return $requires;
    }

/**
     * @param string $author
     *
     * @return array<int, array{name: string, email: string}>
     */
    protected function formatAuthors($author)
    {
        return array($this->parseAuthorString($author));
    }

/**
     * Extract namespace from package's vendor name.
     *
     * new_projects.acme-extra/package-name becomes "NewProjectsAcmeExtra\PackageName"
     *
     * @param string $packageName
     *
     * @return string|null
     */
    public function namespaceFromPackageName($packageName)
    {
        if (!$packageName || strpos($packageName, '/') === false) {
            return null;
        }

$namespace = array_map(
            function ($part) {
                $part = Preg::replace('/[^a-z0-9]/i', ' ', $part);
                $part = ucwords($part);

return str_replace(' ', '', $part);
            },
            explode('/', $packageName)
        );

return join('\\', $namespace);
    }

/**
     * @return array<string, string>
     */
    protected function getGitConfig()
    {
        if (null !== $this->gitConfig) {
            return $this->gitConfig;
        }

$finder = new ExecutableFinder();
        $gitBin = $finder->find('git');

// TODO in v2.3 always call with an array
        if (method_exists('Symfony\Component\Process\Process', 'fromShellCommandline')) {
            $cmd = new Process(array($gitBin, 'config', '-l'));
        } else {
            // @phpstan-ignore-next-line
            $cmd = new Process(sprintf('%s config -l', ProcessExecutor::escape($gitBin)));
        }
        $cmd->run();

if ($cmd->isSuccessful()) {
            $this->gitConfig = array();
            Preg::matchAll('{^([^=]+)=(.*)$}m', $cmd->getOutput(), $matches);
            foreach ($matches[1] as $key => $match) {
                $this->gitConfig[$match] = $matches[2][$key];
            }

return $this->gitConfig;
        }

return $this->gitConfig = array();
    }

/**
     * Checks the local .gitignore file for the Composer vendor directory.
     *
     * Tested patterns include:
     *  "/$vendor"
     *  "$vendor"
     *  "$vendor/"
     *  "/$vendor/"
     *  "/$vendor/*"
     *  "$vendor/*"
     *
     * @param string $ignoreFile
     * @param string $vendor
     *
     * @return bool
     */
    protected function hasVendorIgnore($ignoreFile, $vendor = 'vendor')
    {
        if (!file_exists($ignoreFile)) {
            return false;
        }

$pattern = sprintf('{^/?%s(/\*?)?$}', preg_quote($vendor));

$lines = file($ignoreFile, FILE_IGNORE_NEW_LINES);
        foreach ($lines as $line) {
            if (Preg::isMatch($pattern, $line)) {
                return true;
            }
        }

return false;
    }

/**
     * @param string $ignoreFile
     * @param string $vendor
     *
     * @return void
     */
    protected function addVendorIgnore($ignoreFile, $vendor = '/vendor/')
    {
        $contents = "";
        if (file_exists($ignoreFile)) {
            $contents = file_get_contents($ignoreFile);

if (strpos($contents, "\n") !== 0) {
                $contents .= "\n";
            }
        }

file_put_contents($ignoreFile, $contents . $vendor. "\n");
    }

/**
     * @param string $email
     *
     * @return bool
     */
    protected function isValidEmail($email)
    {
        // assume it's valid if we can't validate it
        if (!function_exists('filter_var')) {
            return true;
        }

// php <5.3.3 has a very broken email validator, so bypass checks
        if (PHP_VERSION_ID < 50303) {
            return true;
        }

return false !== filter_var($email, FILTER_VALIDATE_EMAIL);
    }

/**
     * @param string|null $minimumStability
     *
     * @return RepositorySet
     */
    private function getRepositorySet(InputInterface $input, $minimumStability = null)
    {
        $key = $minimumStability ?: 'default';

if (!isset($this->repositorySets[$key])) {
            $this->repositorySets[$key] = $repositorySet = new RepositorySet($minimumStability ?: $this->getMinimumStability($input));
            $repositorySet->addRepository($this->getRepos());
        }

return $this->repositorySets[$key];
    }

/**
     * @return string
     */
    private function getMinimumStability(InputInterface $input)
    {
        if ($input->hasOption('stability')) {
            return VersionParser::normalizeStability($input->getOption('stability') ?: 'stable');
        }

$file = Factory::getComposerFile();
        if (is_file($file) && Filesystem::isReadable($file) && is_array($composer = json_decode(file_get_contents($file), true))) {
            if (!empty($composer['minimum-stability'])) {
                return VersionParser::normalizeStability($composer['minimum-stability']);
            }
        }

return 'stable';
    }

/**
     * Given a package name, this determines the best version to use in the require key.
     *
     * This returns a version with the ~ operator prefixed when possible.
     *
     * @param  string                    $name
     * @param  PlatformRepository|null   $platformRepo
     * @param  string                    $preferredStability
     * @param  string|null               $requiredVersion
     * @param  string                    $minimumStability
     * @param  bool                      $fixed
     * @throws \InvalidArgumentException
     * @return array{string, string}     name version
     */
    private function findBestVersionAndNameForPackage(InputInterface $input, $name, PlatformRepository $platformRepo = null, $preferredStability = 'stable', $requiredVersion = null, $minimumStability = null, $fixed = null)
    {
        // handle ignore-platform-reqs flag if present
        $ignorePlatformReqs = false;
        if ($input->hasOption('ignore-platform-reqs') && $input->hasOption('ignore-platform-req')) {
            $ignorePlatformReqs = $input->getOption('ignore-platform-reqs') ?: ($input->getOption('ignore-platform-req') ?: false);
        }
        $platformRequirementFilter = PlatformRequirementFilterFactory::fromBoolOrList($ignorePlatformReqs);

// find the latest version allowed in this repo set
        $versionSelector = new VersionSelector($this->getRepositorySet($input, $minimumStability), $platformRepo);
        $effectiveMinimumStability = $minimumStability ?: $this->getMinimumStability($input);

$package = $versionSelector->findBestCandidate($name, $requiredVersion, $preferredStability, $platformRequirementFilter);

if (!$package) {
            // platform packages can not be found in the pool in versions other than the local platform's has
            // so if platform reqs are ignored we just take the user's word for it
            if ($platformRequirementFilter->isIgnored($name)) {
                return array($name, $requiredVersion ?: '*');
            }

// Check whether the package requirements were the problem
            if (!($platformRequirementFilter instanceof IgnoreAllPlatformRequirementFilter) && ($candidate = $versionSelector->findBestCandidate($name, $requiredVersion, $preferredStability, PlatformRequirementFilterFactory::ignoreAll()))) {
                throw new \InvalidArgumentException(sprintf(
                    'Package %s%s has requirements incompatible with your PHP version, PHP extensions and Composer version' . $this->getPlatformExceptionDetails($candidate, $platformRepo),
                    $name,
                    $requiredVersion ? ' at version '.$requiredVersion : ''
                ));
            }
            // Check whether the minimum stability was the problem but the package exists
            if ($package = $versionSelector->findBestCandidate($name, $requiredVersion, $preferredStability, $platformRequirementFilter, RepositorySet::ALLOW_UNACCEPTABLE_STABILITIES)) {
                // we must first verify if a valid package would be found in a lower priority repository
                if ($allReposPackage = $versionSelector->findBestCandidate($name, $requiredVersion, $preferredStability, $platformRequirementFilter, RepositorySet::ALLOW_SHADOWED_REPOSITORIES)) {
                    throw new \InvalidArgumentException(
                        'Package '.$name.' exists in '.$allReposPackage->getRepository()->getRepoName().' and '.$package->getRepository()->getRepoName().' which has a higher repository priority. The packages from the higher priority repository do not match your minimum-stability and are therefore not installable. That repository is canonical so the lower priority repo\'s packages are not installable. See https://getcomposer.org/repoprio for details and assistance.'
                    );
                }

throw new \InvalidArgumentException(sprintf(
                    'Could not find a version of package %s matching your minimum-stability (%s). Require it with an explicit version constraint allowing its desired stability.',
                    $name,
                    $effectiveMinimumStability
                ));
            }
            // Check whether the required version was the problem
            if ($requiredVersion && $package = $versionSelector->findBestCandidate($name, null, $preferredStability, $platformRequirementFilter)) {
                // we must first verify if a valid package would be found in a lower priority repository
                if ($allReposPackage = $versionSelector->findBestCandidate($name, $requiredVersion, $preferredStability, PlatformRequirementFilterFactory::ignoreNothing(), RepositorySet::ALLOW_SHADOWED_REPOSITORIES)) {
                    throw new \InvalidArgumentException(
                        'Package '.$name.' exists in '.$allReposPackage->getRepository()->getRepoName().' and '.$package->getRepository()->getRepoName().' which has a higher repository priority. The packages from the higher priority repository do not match your constraint and are therefore not installable. That repository is canonical so the lower priority repo\'s packages are not installable. See https://getcomposer.org/repoprio for details and assistance.'
                    );
                }

throw new \InvalidArgumentException(sprintf(
                    'Could not find package %s in a version matching "%s" and a stability matching "'.$effectiveMinimumStability.'".',
                    $name,
                    $requiredVersion
                ));
            }
            // Check whether the PHP version was the problem for all versions
            if (!($platformRequirementFilter instanceof IgnoreAllPlatformRequirementFilter) && ($candidate = $versionSelector->findBestCandidate($name, null, $preferredStability, PlatformRequirementFilterFactory::ignoreAll(), RepositorySet::ALLOW_UNACCEPTABLE_STABILITIES))) {
                $additional = '';
                if (false === $versionSelector->findBestCandidate($name, null, $preferredStability, PlatformRequirementFilterFactory::ignoreAll())) {
                    $additional = PHP_EOL.PHP_EOL.'Additionally, the package was only found with a stability of "'.$candidate->getStability().'" while your minimum stability is "'.$effectiveMinimumStability.'".';
                }

throw new \InvalidArgumentException(sprintf(
                    'Could not find package %s in any version matching your PHP version, PHP extensions and Composer version' . $this->getPlatformExceptionDetails($candidate, $platformRepo) . '%s',
                    $name,
                    $additional
                ));
            }

// Check for similar names/typos
            $similar = $this->findSimilar($name);
            if ($similar) {
                if (in_array($name, $similar, true)) {
                    throw new \InvalidArgumentException(sprintf(
                        "Could not find package %s. It was however found via repository search, which indicates a consistency issue with the repository.",
                        $name
                    ));
                }

throw new \InvalidArgumentException(sprintf(
                    "Could not find package %s.\n\nDid you mean " . (count($similar) > 1 ? 'one of these' : 'this') . "?\n    %s",
                    $name,
                    implode("\n    ", $similar)
                ));
            }

throw new \InvalidArgumentException(sprintf(
                'Could not find a matching version of package %s. Check the package spelling, your version constraint and that the package is available in a stability which matches your minimum-stability (%s).',
                $name,
                $effectiveMinimumStability
            ));
        }

return array(
            $package->getPrettyName(),
            $fixed ? $package->getPrettyVersion() : $versionSelector->findRecommendedRequireVersion($package),
        );
    }

/**
     * @return string
     */
    private function getPlatformExceptionDetails(PackageInterface $candidate, PlatformRepository $platformRepo = null)
    {
        $details = array();
        if (!$platformRepo) {
            return '';
        }

foreach ($candidate->getRequires() as $link) {
            if (!PlatformRepository::isPlatformPackage($link->getTarget())) {
                continue;
            }
            $platformPkg = $platformRepo->findPackage($link->getTarget(), '*');
            if (!$platformPkg) {
                if ($platformRepo->isPlatformPackageDisabled($link->getTarget())) {
                    $details[] = $candidate->getPrettyName().' '.$candidate->getPrettyVersion().' requires '.$link->getTarget().' '.$link->getPrettyConstraint().' but it is disabled by your platform config. Enable it again with "composer config platform.'.$link->getTarget().' --unset".';
                } else {
                    $details[] = $candidate->getPrettyName().' '.$candidate->getPrettyVersion().' requires '.$link->getTarget().' '.$link->getPrettyConstraint().' but it is not present.';
                }
                continue;
            }
            if (!$link->getConstraint()->matches(new Constraint('==', $platformPkg->getVersion()))) {
                $platformPkgVersion = $platformPkg->getPrettyVersion();
                $platformExtra = $platformPkg->getExtra();
                if (isset($platformExtra['config.platform']) && $platformPkg instanceof CompletePackageInterface) {
                    $platformPkgVersion .= ' ('.$platformPkg->getDescription().')';
                }
                $details[] = $candidate->getPrettyName().' '.$candidate->getPrettyVersion().' requires '.$link->getTarget().' '.$link->getPrettyConstraint().' which does not match your installed version '.$platformPkgVersion.'.';
            }
        }

if (!$details) {
            return '';
        }

return ':'.PHP_EOL.'  - ' . implode(PHP_EOL.'  - ', $details);
    }

/**
     * @param string $package
     *
     * @return array<string>
     */
    private function findSimilar($package)
    {
        try {
            $results = $this->repos->search($package);
        } catch (\Exception $e) {
            // ignore search errors
            return array();
        }
        $similarPackages = array();

$installedRepo = $this->getComposer()->getRepositoryManager()->getLocalRepository();

foreach ($results as $result) {
            if ($installedRepo->findPackage($result['name'], '*')) {
                // Ignore installed package
                continue;
            }
            $similarPackages[$result['name']] = levenshtein($package, $result['name']);
        }
        asort($similarPackages);

return array_keys(array_slice($similarPackages, 0, 5));
    }

/**
     * @return void
     */
    private function updateDependencies(OutputInterface $output)
    {
        try {
            $updateCommand = $this->getApplication()->find('update');
            $this->getApplication()->resetComposer();
            $updateCommand->run(new ArrayInput(array()), $output);
        } catch (\Exception $e) {
            $this->getIO()->writeError('Could not update dependencies. Run `composer update` to see more information.');
        }
    }

/**
     * @return void
     */
    private function runDumpAutoloadCommand(OutputInterface $output)
    {
        try {
            $command = $this->getApplication()->find('dump-autoload');
            $this->getApplication()->resetComposer();
            $command->run(new ArrayInput(array()), $output);
        } catch (\Exception $e) {
            $this->getIO()->writeError('Could not run dump-autoload.');
        }
    }

/**
     * @param array<string, string|array<string>> $options
     * @return bool
     */
    private function hasDependencies($options)
    {
        $requires = (array) $options['require'];
        $devRequires = isset($options['require-dev']) ? (array) $options['require-dev'] : array();

return !empty($requires) || !empty($devRequires);
    }
}
<?php

namespace Composer\Command;

use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class ScriptAliasCommand extends BaseCommand
{
    /** @var string */
    private $script;
    /** @var string */
    private $description;

/**
     * @param string $script
     * @param string $description
     */
    public function __construct($script, $description)
    {
        $this->script = $script;
        $this->description = empty($description) ? 'Runs the '.$script.' script as defined in composer.json.' : $description;

parent::__construct();
    }

/**
     * @return void
     */
    protected function configure()
    {
        $this
            ->setName($this->script)
            ->setDescription($this->description)
            ->setDefinition(array(
                new InputOption('dev', null, InputOption::VALUE_NONE, 'Sets the dev mode.'),
                new InputOption('no-dev', null, InputOption::VALUE_NONE, 'Disables the dev mode.'),
                new InputArgument('args', InputArgument::IS_ARRAY | InputArgument::OPTIONAL, ''),
            ))
            ->setHelp(
                <<<EOT
The <info>run-script</info> command runs scripts defined in composer.json:

<info>php composer.phar run-script post-update-cmd</info>

Read more at https://getcomposer.org/doc/03-cli.md#run-script
EOT
            )
        ;
    }

/**
     * @return int
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $composer = $this->getComposer();

$args = $input->getArguments();

return $composer->getEventDispatcher()->dispatchScript($this->script, $input->getOption('dev') || !$input->getOption('no-dev'), $args['args']);
    }
}
<?php

namespace Composer\Command;

use Composer\DependencyResolver\Request;
use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterFactory;
use Composer\Util\Filesystem;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;
use Composer\Factory;
use Composer\Installer;
use Composer\Installer\InstallerEvents;
use Composer\Json\JsonFile;
use Composer\Json\JsonManipulator;
use Composer\Package\Version\VersionParser;
use Composer\Package\Loader\ArrayLoader;
use Composer\Package\BasePackage;
use Composer\Plugin\CommandEvent;
use Composer\Plugin\PluginEvents;
use Composer\Repository\CompositeRepository;
use Composer\Repository\PlatformRepository;
use Composer\IO\IOInterface;
use Composer\Util\Silencer;

/**
 * @author Jérémy Romey <jeremy@free-agent.fr>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class RequireCommand extends InitCommand
{
    /** @var bool */
    private $newlyCreated;
    /** @var bool */
    private $firstRequire;
    /** @var JsonFile */
    private $json;
    /** @var string */
    private $file;
    /** @var string */
    private $composerBackup;
    /** @var string file name */
    private $lock;
    /** @var ?string contents before modification if the lock file exists */
    private $lockBackup;
    /** @var bool */
    private $dependencyResolutionCompleted = false;

/**
     * @return void
     */
    protected function configure()
    {
        $this
            ->setName('require')
            ->setDescription('Adds required packages to your composer.json and installs them.')
            ->setDefinition(array(
                new InputArgument('packages', InputArgument::IS_ARRAY | InputArgument::OPTIONAL, 'Optional package name can also include a version constraint, e.g. foo/bar or foo/bar:1.0.0 or foo/bar=1.0.0 or "foo/bar 1.0.0"'),
                new InputOption('dev', null, InputOption::VALUE_NONE, 'Add requirement to require-dev.'),
                new InputOption('dry-run', null, InputOption::VALUE_NONE, 'Outputs the operations but will not execute anything (implicitly enables --verbose).'),
                new InputOption('prefer-source', null, InputOption::VALUE_NONE, 'Forces installation from package sources when possible, including VCS information.'),
                new InputOption('prefer-dist', null, InputOption::VALUE_NONE, 'Forces installation from package dist (default behavior).'),
                new InputOption('prefer-install', null, InputOption::VALUE_REQUIRED, 'Forces installation from package dist|source|auto (auto chooses source for dev versions, dist for the rest).'),
                new InputOption('fixed', null, InputOption::VALUE_NONE, 'Write fixed version to the composer.json.'),
                new InputOption('no-suggest', null, InputOption::VALUE_NONE, 'DEPRECATED: This flag does not exist anymore.'),
                new InputOption('no-progress', null, InputOption::VALUE_NONE, 'Do not output download progress.'),
                new InputOption('no-update', null, InputOption::VALUE_NONE, 'Disables the automatic update of the dependencies (implies --no-install).'),
                new InputOption('no-install', null, InputOption::VALUE_NONE, 'Skip the install step after updating the composer.lock file.'),
                new InputOption('update-no-dev', null, InputOption::VALUE_NONE, 'Run the dependency update with the --no-dev option.'),
                new InputOption('update-with-dependencies', 'w', InputOption::VALUE_NONE, 'Allows inherited dependencies to be updated, except those that are root requirements.'),
                new InputOption('update-with-all-dependencies', 'W', InputOption::VALUE_NONE, 'Allows all inherited dependencies to be updated, including those that are root requirements.'),
                new InputOption('with-dependencies', null, InputOption::VALUE_NONE, 'Alias for --update-with-dependencies'),
                new InputOption('with-all-dependencies', null, InputOption::VALUE_NONE, 'Alias for --update-with-all-dependencies'),
                new InputOption('ignore-platform-req', null, InputOption::VALUE_REQUIRED | InputOption::VALUE_IS_ARRAY, 'Ignore a specific platform requirement (php & ext- packages).'),
                new InputOption('ignore-platform-reqs', null, InputOption::VALUE_NONE, 'Ignore all platform requirements (php & ext- packages).'),
                new InputOption('prefer-stable', null, InputOption::VALUE_NONE, 'Prefer stable versions of dependencies.'),
                new InputOption('prefer-lowest', null, InputOption::VALUE_NONE, 'Prefer lowest versions of dependencies.'),
                new InputOption('sort-packages', null, InputOption::VALUE_NONE, 'Sorts packages when adding/updating a new dependency'),
                new InputOption('optimize-autoloader', 'o', InputOption::VALUE_NONE, 'Optimize autoloader during autoloader dump'),
                new InputOption('classmap-authoritative', 'a', InputOption::VALUE_NONE, 'Autoload classes from the classmap only. Implicitly enables `--optimize-autoloader`.'),
                new InputOption('apcu-autoloader', null, InputOption::VALUE_NONE, 'Use APCu to cache found/not-found classes.'),
                new InputOption('apcu-autoloader-prefix', null, InputOption::VALUE_REQUIRED, 'Use a custom prefix for the APCu autoloader cache. Implicitly enables --apcu-autoloader'),
            ))
            ->setHelp(
                <<<EOT
The require command adds required packages to your composer.json and installs them.

If you do not specify a package, composer will prompt you to search for a package, and given results, provide a list of
matches to require.

If you do not specify a version constraint, composer will choose a suitable one based on the available package versions.

If you do not want to install the new dependencies immediately you can call it with --no-update

Read more at https://getcomposer.org/doc/03-cli.md#require
EOT
            )
        ;
    }

/**
     * @return int
     * @throws \Seld\JsonLint\ParsingException
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        if (function_exists('pcntl_async_signals') && function_exists('pcntl_signal')) {
            pcntl_async_signals(true);
            pcntl_signal(SIGINT, array($this, 'revertComposerFile'));
            pcntl_signal(SIGTERM, array($this, 'revertComposerFile'));
            pcntl_signal(SIGHUP, array($this, 'revertComposerFile'));
        }

$this->file = Factory::getComposerFile();
        $io = $this->getIO();

if ($input->getOption('no-suggest')) {
            $io->writeError('<warning>You are using the deprecated option "--no-suggest". It has no effect and will break in Composer 3.</warning>');
        }

$this->newlyCreated = !file_exists($this->file);
        if ($this->newlyCreated && !file_put_contents($this->file, "{\n}\n")) {
            $io->writeError('<error>'.$this->file.' could not be created.</error>');

return 1;
        }
        if (!Filesystem::isReadable($this->file)) {
            $io->writeError('<error>'.$this->file.' is not readable.</error>');

return 1;
        }

if (filesize($this->file) === 0) {
            file_put_contents($this->file, "{\n}\n");
        }

$this->json = new JsonFile($this->file);
        $this->lock = Factory::getLockFile($this->file);
        $this->composerBackup = file_get_contents($this->json->getPath());
        $this->lockBackup = file_exists($this->lock) ? file_get_contents($this->lock) : null;

// check for writability by writing to the file as is_writable can not be trusted on network-mounts
        // see https://github.com/composer/composer/issues/8231 and https://bugs.php.net/bug.php?id=68926
        if (!is_writable($this->file) && !Silencer::call('file_put_contents', $this->file, $this->composerBackup)) {
            $io->writeError('<error>'.$this->file.' is not writable.</error>');

return 1;
        }

if ($input->getOption('fixed') === true) {
            $config = $this->json->read();

$packageType = empty($config['type']) ? 'library' : $config['type'];

/**
             * @see https://github.com/composer/composer/pull/8313#issuecomment-532637955
             */
            if ($packageType !== 'project') {
                $io->writeError('<error>"--fixed" option is allowed for "project" package types only to prevent possible misuses.</error>');

if (empty($config['type'])) {
                    $io->writeError('<error>If your package is not library, you should explicitly specify "type" parameter in composer.json.</error>');
                }

return 1;
            }
        }

$composer = $this->getComposer(true, $input->getOption('no-plugins'));
        $repos = $composer->getRepositoryManager()->getRepositories();

$platformOverrides = $composer->getConfig()->get('platform') ?: array();
        // initialize $this->repos as it is used by the parent InitCommand
        $this->repos = new CompositeRepository(array_merge(
            array($platformRepo = new PlatformRepository(array(), $platformOverrides)),
            $repos
        ));

if ($composer->getPackage()->getPreferStable()) {
            $preferredStability = 'stable';
        } else {
            $preferredStability = $composer->getPackage()->getMinimumStability();
        }

try {
            $requirements = $this->determineRequirements(
                $input,
                $output,
                $input->getArgument('packages'),
                $platformRepo,
                $preferredStability,
                !$input->getOption('no-update'),
                $input->getOption('fixed')
            );
        } catch (\Exception $e) {
            if ($this->newlyCreated) {
                $this->revertComposerFile(false);

throw new \RuntimeException('No composer.json present in the current directory ('.$this->file.'), this may be the cause of the following exception.', 0, $e);
            }

throw $e;
        }

$requireKey = $input->getOption('dev') ? 'require-dev' : 'require';
        $removeKey = $input->getOption('dev') ? 'require' : 'require-dev';
        $requirements = $this->formatRequirements($requirements);

// validate requirements format
        $versionParser = new VersionParser();
        foreach ($requirements as $package => $constraint) {
            if (strtolower($package) === $composer->getPackage()->getName()) {
                $io->writeError(sprintf('<error>Root package \'%s\' cannot require itself in its composer.json</error>', $package));

return 1;
            }
            $versionParser->parseConstraints($constraint);
        }

$inconsistentRequireKeys = $this->getInconsistentRequireKeys($requirements, $requireKey);
        if (count($inconsistentRequireKeys) > 0) {
            foreach ($inconsistentRequireKeys as $package) {
                $io->warning(sprintf(
                    '%s is currently present in the %s key and you ran the command %s the --dev flag, which would move it to the %s key.',
                    $package,
                    $removeKey,
                    $input->getOption('dev') ? 'with' : 'without',
                    $requireKey
                ));
            }

if ($io->isInteractive()) {
                if (!$io->askConfirmation(sprintf('<info>Do you want to move %s?</info> [<comment>no</comment>]? ', count($inconsistentRequireKeys) > 1 ? 'these requirements' : 'this requirement'), false)) {
                    if (!$io->askConfirmation(sprintf('<info>Do you want to re-run the command %s --dev?</info> [<comment>yes</comment>]? ', $input->getOption('dev') ? 'without' : 'with'), true)) {
                        return 0;
                    }

list($requireKey, $removeKey) = array($removeKey, $requireKey);
                }
            }
        }

$sortPackages = $input->getOption('sort-packages') || $composer->getConfig()->get('sort-packages');

$this->firstRequire = $this->newlyCreated;
        if (!$this->firstRequire) {
            $composerDefinition = $this->json->read();
            if (empty($composerDefinition['require']) && empty($composerDefinition['require-dev'])) {
                $this->firstRequire = true;
            }
        }

if (!$input->getOption('dry-run') && !$this->updateFileCleanly($this->json, $requirements, $requireKey, $removeKey, $sortPackages)) {
            $composerDefinition = $this->json->read();
            foreach ($requirements as $package => $version) {
                $composerDefinition[$requireKey][$package] = $version;
                unset($composerDefinition[$removeKey][$package]);
                if (isset($composerDefinition[$removeKey]) && count($composerDefinition[$removeKey]) === 0) {
                    unset($composerDefinition[$removeKey]);
                }
            }
            $this->json->write($composerDefinition);
        }

$io->writeError('<info>'.$this->file.' has been '.($this->newlyCreated ? 'created' : 'updated').'</info>');

if ($input->getOption('no-update')) {
            return 0;
        }

$composer->getPluginManager()->deactivateInstalledPlugins();

try {
            return $this->doUpdate($input, $output, $io, $requirements, $requireKey, $removeKey);
        } catch (\Exception $e) {
            if (!$this->dependencyResolutionCompleted) {
                $this->revertComposerFile(false);
            }
            throw $e;
        }
    }

/**
     * @param array<string, string> $newRequirements
     * @param string $requireKey
     * @return string[]
     */
    private function getInconsistentRequireKeys(array $newRequirements, $requireKey)
    {
        $requireKeys = $this->getPackagesByRequireKey();
        $inconsistentRequirements = array();
        foreach ($requireKeys as $package => $packageRequireKey) {
            if (!isset($newRequirements[$package])) {
                continue;
            }
            if ($requireKey !== $packageRequireKey) {
                $inconsistentRequirements[] = $package;
            }
        }

return $inconsistentRequirements;
    }

/**
     * @return array<string, string>
     */
    private function getPackagesByRequireKey()
    {
        $composerDefinition = $this->json->read();
        $require = array();
        $requireDev = array();

if (isset($composerDefinition['require'])) {
            $require = $composerDefinition['require'];
        }

if (isset($composerDefinition['require-dev'])) {
            $requireDev = $composerDefinition['require-dev'];
        }

return array_merge(
            array_fill_keys(array_keys($require), 'require'),
            array_fill_keys(array_keys($requireDev), 'require-dev')
        );
    }

/**
     * @private
     * @return void
     */
    public function markSolverComplete()
    {
        $this->dependencyResolutionCompleted = true;
    }

/**
     * @param array<string, string> $requirements
     * @param string $requireKey
     * @param string $removeKey
     * @return int
     * @throws \Exception
     */
    private function doUpdate(InputInterface $input, OutputInterface $output, IOInterface $io, array $requirements, $requireKey, $removeKey)
    {
        // Update packages
        $this->resetComposer();
        $composer = $this->getComposer(true, $input->getOption('no-plugins'), $input->getOption('no-scripts'));

$this->dependencyResolutionCompleted = false;
        $composer->getEventDispatcher()->addListener(InstallerEvents::PRE_OPERATIONS_EXEC, array($this, 'markSolverComplete'), 10000);

if ($input->getOption('dry-run')) {
            $rootPackage = $composer->getPackage();
            $links = array(
                'require' => $rootPackage->getRequires(),
                'require-dev' => $rootPackage->getDevRequires(),
            );
            $loader = new ArrayLoader();
            $newLinks = $loader->parseLinks($rootPackage->getName(), $rootPackage->getPrettyVersion(), BasePackage::$supportedLinkTypes[$requireKey]['method'], $requirements);
            $links[$requireKey] = array_merge($links[$requireKey], $newLinks);
            foreach ($requirements as $package => $constraint) {
                unset($links[$removeKey][$package]);
            }
            $rootPackage->setRequires($links['require']);
            $rootPackage->setDevRequires($links['require-dev']);
        }

$updateDevMode = !$input->getOption('update-no-dev');
        $optimize = $input->getOption('optimize-autoloader') || $composer->getConfig()->get('optimize-autoloader');
        $authoritative = $input->getOption('classmap-authoritative') || $composer->getConfig()->get('classmap-authoritative');
        $apcuPrefix = $input->getOption('apcu-autoloader-prefix');
        $apcu = $apcuPrefix !== null || $input->getOption('apcu-autoloader') || $composer->getConfig()->get('apcu-autoloader');

$updateAllowTransitiveDependencies = Request::UPDATE_ONLY_LISTED;
        $flags = '';
        if ($input->getOption('update-with-all-dependencies') || $input->getOption('with-all-dependencies')) {
            $updateAllowTransitiveDependencies = Request::UPDATE_LISTED_WITH_TRANSITIVE_DEPS;
            $flags .= ' --with-all-dependencies';
        } elseif ($input->getOption('update-with-dependencies') || $input->getOption('with-dependencies')) {
            $updateAllowTransitiveDependencies = Request::UPDATE_LISTED_WITH_TRANSITIVE_DEPS_NO_ROOT_REQUIRE;
            $flags .= ' --with-dependencies';
        }

$io->writeError('<info>Running composer update '.implode(' ', array_keys($requirements)).$flags.'</info>');

$commandEvent = new CommandEvent(PluginEvents::COMMAND, 'require', $input, $output);
        $composer->getEventDispatcher()->dispatch($commandEvent->getName(), $commandEvent);

$composer->getInstallationManager()->setOutputProgress(!$input->getOption('no-progress'));

$install = Installer::create($io, $composer);

$ignorePlatformReqs = $input->getOption('ignore-platform-reqs') ?: ($input->getOption('ignore-platform-req') ?: false);
        list($preferSource, $preferDist) = $this->getPreferredInstallOptions($composer->getConfig(), $input);

$install
            ->setDryRun($input->getOption('dry-run'))
            ->setVerbose($input->getOption('verbose'))
            ->setPreferSource($preferSource)
            ->setPreferDist($preferDist)
            ->setDevMode($updateDevMode)
            ->setOptimizeAutoloader($optimize)
            ->setClassMapAuthoritative($authoritative)
            ->setApcuAutoloader($apcu, $apcuPrefix)
            ->setUpdate(true)
            ->setInstall(!$input->getOption('no-install'))
            ->setUpdateAllowTransitiveDependencies($updateAllowTransitiveDependencies)
            ->setPlatformRequirementFilter(PlatformRequirementFilterFactory::fromBoolOrList($ignorePlatformReqs))
            ->setPreferStable($input->getOption('prefer-stable'))
            ->setPreferLowest($input->getOption('prefer-lowest'))
        ;

// if no lock is present, or the file is brand new, we do not do a
        // partial update as this is not supported by the Installer
        if (!$this->firstRequire && $composer->getLocker()->isLocked()) {
            $install->setUpdateAllowList(array_keys($requirements));
        }

$status = $install->run();
        if ($status !== 0) {
            if ($status === Installer::ERROR_DEPENDENCY_RESOLUTION_FAILED) {
                foreach ($this->normalizeRequirements($input->getArgument('packages')) as $req) {
                    if (!isset($req['version'])) {
                        $io->writeError('You can also try re-running composer require with an explicit version constraint, e.g. "composer require '.$req['name'].':*" to figure out if any version is installable, or "composer require '.$req['name'].':^2.1" if you know which you need.');
                        break;
                    }
                }
            }
            $this->revertComposerFile(false);
        }

return $status;
    }

/**
     * @param array<string, string> $new
     * @param string $requireKey
     * @param string $removeKey
     * @param bool $sortPackages
     * @return bool
     */
    private function updateFileCleanly(JsonFile $json, array $new, $requireKey, $removeKey, $sortPackages)
    {
        $contents = file_get_contents($json->getPath());

$manipulator = new JsonManipulator($contents);

foreach ($new as $package => $constraint) {
            if (!$manipulator->addLink($requireKey, $package, $constraint, $sortPackages)) {
                return false;
            }
            if (!$manipulator->removeSubNode($removeKey, $package)) {
                return false;
            }
        }

$manipulator->removeMainKeyIfEmpty($removeKey);

file_put_contents($json->getPath(), $manipulator->getContents());

return true;
    }

protected function interact(InputInterface $input, OutputInterface $output)
    {
        return;
    }

/**
     * @param bool $hardExit
     * @return void
     */
    public function revertComposerFile($hardExit = true)
    {
        $io = $this->getIO();

if ($this->newlyCreated) {
            $io->writeError("\n".'<error>Installation failed, deleting '.$this->file.'.</error>');
            unlink($this->json->getPath());
            if (file_exists($this->lock)) {
                unlink($this->lock);
            }
        } else {
            $msg = ' to its ';
            if ($this->lockBackup) {
                $msg = ' and '.$this->lock.' to their ';
            }
            $io->writeError("\n".'<error>Installation failed, reverting '.$this->file.$msg.'original content.</error>');
            file_put_contents($this->json->getPath(), $this->composerBackup);
            if ($this->lockBackup) {
                file_put_contents($this->lock, $this->lockBackup);
            }
        }

if ($hardExit) {
            exit(1);
        }
    }
}
<?php

namespace Composer\Command;

use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputOption;

/**
 * @author Niels Keurentjes <niels.keurentjes@omines.com>
 */
class DependsCommand extends BaseDependencyCommand
{
    /**
     * Configure command metadata.
     *
     * @return void
     */
    protected function configure()
    {
        $this
            ->setName('depends')
            ->setAliases(array('why'))
            ->setDescription('Shows which packages cause the given package to be installed.')
            ->setDefinition(array(
                new InputArgument(self::ARGUMENT_PACKAGE, InputArgument::REQUIRED, 'Package to inspect'),
                new InputOption(self::OPTION_RECURSIVE, 'r', InputOption::VALUE_NONE, 'Recursively resolves up to the root package'),
                new InputOption(self::OPTION_TREE, 't', InputOption::VALUE_NONE, 'Prints the results as a nested tree'),
            ))
            ->setHelp(
                <<<EOT
Displays detailed information about where a package is referenced.

<info>php composer.phar depends composer/composer</info>

Read more at https://getcomposer.org/doc/03-cli.md#depends-why-
EOT
            )
        ;
    }

/**
     * Execute the function.
     *
     * @return int
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        return parent::doExecute($input, $output);
    }
}
<?php

namespace Composer\Command;

use Composer\Config;
use Composer\Factory;
use Composer\Filter\PlatformRequirementFilter\IgnoreAllPlatformRequirementFilter;
use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterFactory;
use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterInterface;
use Composer\Installer;
use Composer\Installer\ProjectInstaller;
use Composer\Installer\SuggestedPackagesReporter;
use Composer\IO\IOInterface;
use Composer\Package\BasePackage;
use Composer\DependencyResolver\Operation\InstallOperation;
use Composer\Package\Version\VersionSelector;
use Composer\Package\AliasPackage;
use Composer\Pcre\Preg;
use Composer\Repository\RepositoryFactory;
use Composer\Repository\CompositeRepository;
use Composer\Repository\PlatformRepository;
use Composer\Repository\InstalledArrayRepository;
use Composer\Repository\RepositorySet;
use Composer\Script\ScriptEvents;
use Composer\Util\Silencer;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Finder\Finder;
use Composer\Json\JsonFile;
use Composer\Config\JsonConfigSource;
use Composer\Util\Filesystem;
use Composer\Util\Platform;
use Composer\Util\ProcessExecutor;
use Composer\Package\Version\VersionParser;

/**
 * Install a package as new project into new directory.
 *
 * @author Benjamin Eberlei <kontakt@beberlei.de>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 * @author Tobias Munk <schmunk@usrbin.de>
 * @author Nils Adermann <naderman@naderman.de>
 */
class CreateProjectCommand extends BaseCommand
{
    /**
     * @var SuggestedPackagesReporter
     */
    protected $suggestedPackagesReporter;

/**
     * @return void
     */
    protected function configure()
    {
        $this
            ->setName('create-project')
            ->setDescription('Creates new project from a package into given directory.')
            ->setDefinition(array(
                new InputArgument('package', InputArgument::OPTIONAL, 'Package name to be installed'),
                new InputArgument('directory', InputArgument::OPTIONAL, 'Directory where the files should be created'),
                new InputArgument('version', InputArgument::OPTIONAL, 'Version, will default to latest'),
                new InputOption('stability', 's', InputOption::VALUE_REQUIRED, 'Minimum-stability allowed (unless a version is specified).'),
                new InputOption('prefer-source', null, InputOption::VALUE_NONE, 'Forces installation from package sources when possible, including VCS information.'),
                new InputOption('prefer-dist', null, InputOption::VALUE_NONE, 'Forces installation from package dist (default behavior).'),
                new InputOption('prefer-install', null, InputOption::VALUE_REQUIRED, 'Forces installation from package dist|source|auto (auto chooses source for dev versions, dist for the rest).'),
                new InputOption('repository', null, InputOption::VALUE_REQUIRED | InputOption::VALUE_IS_ARRAY, 'Add custom repositories to look the package up, either by URL or using JSON arrays'),
                new InputOption('repository-url', null, InputOption::VALUE_REQUIRED, 'DEPRECATED: Use --repository instead.'),
                new InputOption('add-repository', null, InputOption::VALUE_NONE, 'Add the custom repository in the composer.json. If a lock file is present it will be deleted and an update will be run instead of install.'),
                new InputOption('dev', null, InputOption::VALUE_NONE, 'Enables installation of require-dev packages (enabled by default, only present for BC).'),
                new InputOption('no-dev', null, InputOption::VALUE_NONE, 'Disables installation of require-dev packages.'),
                new InputOption('no-custom-installers', null, InputOption::VALUE_NONE, 'DEPRECATED: Use no-plugins instead.'),
                new InputOption('no-scripts', null, InputOption::VALUE_NONE, 'Whether to prevent execution of all defined scripts in the root package.'),
                new InputOption('no-progress', null, InputOption::VALUE_NONE, 'Do not output download progress.'),
                new InputOption('no-secure-http', null, InputOption::VALUE_NONE, 'Disable the secure-http config option temporarily while installing the root package. Use at your own risk. Using this flag is a bad idea.'),
                new InputOption('keep-vcs', null, InputOption::VALUE_NONE, 'Whether to prevent deleting the vcs folder.'),
                new InputOption('remove-vcs', null, InputOption::VALUE_NONE, 'Whether to force deletion of the vcs folder without prompting.'),
                new InputOption('no-install', null, InputOption::VALUE_NONE, 'Whether to skip installation of the package dependencies.'),
                new InputOption('ignore-platform-req', null, InputOption::VALUE_REQUIRED | InputOption::VALUE_IS_ARRAY, 'Ignore a specific platform requirement (php & ext- packages).'),
                new InputOption('ignore-platform-reqs', null, InputOption::VALUE_NONE, 'Ignore all platform requirements (php & ext- packages).'),
                new InputOption('ask', null, InputOption::VALUE_NONE, 'Whether to ask for project directory.'),
            ))
            ->setHelp(
                <<<EOT
The <info>create-project</info> command creates a new project from a given
package into a new directory. If executed without params and in a directory
with a composer.json file it installs the packages for the current project.

You can use this command to bootstrap new projects or setup a clean
version-controlled installation for developers of your project.

<info>php composer.phar create-project vendor/project target-directory [version]</info>

You can also specify the version with the package name using = or : as separator.

<info>php composer.phar create-project vendor/project:version target-directory</info>

To install unstable packages, either specify the version you want, or use the
--stability=dev (where dev can be one of RC, beta, alpha or dev).

To setup a developer workable version you should create the project using the source
controlled code by appending the <info>'--prefer-source'</info> flag.

To install a package from another repository than the default one you
can pass the <info>'--repository=https://myrepository.org'</info> flag.

Read more at https://getcomposer.org/doc/03-cli.md#create-project
EOT
            )
        ;
    }

/**
     * @return int
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $config = Factory::createConfig();
        $io = $this->getIO();

list($preferSource, $preferDist) = $this->getPreferredInstallOptions($config, $input, true);

if ($input->getOption('dev')) {
            $io->writeError('<warning>You are using the deprecated option "dev". Dev packages are installed by default now.</warning>');
        }
        if ($input->getOption('no-custom-installers')) {
            $io->writeError('<warning>You are using the deprecated option "no-custom-installers". Use "no-plugins" instead.</warning>');
            $input->setOption('no-plugins', true);
        }

if ($input->isInteractive() && $input->getOption('ask')) {
            $parts = explode("/", strtolower($input->getArgument('package')), 2);
            $input->setArgument('directory', $io->ask('New project directory [<comment>'.array_pop($parts).'</comment>]: '));
        }

$ignorePlatformReqs = $input->getOption('ignore-platform-reqs') ?: ($input->getOption('ignore-platform-req') ?: false);

return $this->installProject(
            $io,
            $config,
            $input,
            $input->getArgument('package'),
            $input->getArgument('directory'),
            $input->getArgument('version'),
            $input->getOption('stability'),
            $preferSource,
            $preferDist,
            !$input->getOption('no-dev'),
            $input->getOption('repository') ?: $input->getOption('repository-url'),
            $input->getOption('no-plugins'),
            $input->getOption('no-scripts'),
            $input->getOption('no-progress'),
            $input->getOption('no-install'),
            PlatformRequirementFilterFactory::fromBoolOrList($ignorePlatformReqs),
            !$input->getOption('no-secure-http'),
            $input->getOption('add-repository')
        );
    }

/**
     * @param string|null               $packageName
     * @param string|null               $directory
     * @param string|null               $packageVersion
     * @param string                    $stability
     * @param bool                      $preferSource
     * @param bool                      $preferDist
     * @param bool                      $installDevPackages
     * @param string|array<string>|null $repositories
     * @param bool                      $disablePlugins
     * @param bool                      $disableScripts
     * @param bool                      $noProgress
     * @param bool                      $noInstall
     * @param bool                      $secureHttp
     * @param bool                      $addRepository
     *
     * @return int
     * @throws \Exception
     */
    public function installProject(IOInterface $io, Config $config, InputInterface $input, $packageName = null, $directory = null, $packageVersion = null, $stability = 'stable', $preferSource = false, $preferDist = false, $installDevPackages = false, $repositories = null, $disablePlugins = false, $disableScripts = false, $noProgress = false, $noInstall = false, PlatformRequirementFilterInterface $platformRequirementFilter = null, $secureHttp = true, $addRepository = false)
    {
        $oldCwd = getcwd();

if ($repositories !== null && !is_array($repositories)) {
            $repositories = (array) $repositories;
        }

$platformRequirementFilter = $platformRequirementFilter ?: PlatformRequirementFilterFactory::ignoreNothing();

// we need to manually load the configuration to pass the auth credentials to the io interface!
        $io->loadConfiguration($config);

$this->suggestedPackagesReporter = new SuggestedPackagesReporter($io);

if ($packageName !== null) {
            $installedFromVcs = $this->installRootPackage($io, $config, $packageName, $platformRequirementFilter, $directory, $packageVersion, $stability, $preferSource, $preferDist, $installDevPackages, $repositories, $disablePlugins, $disableScripts, $noProgress, $secureHttp);
        } else {
            $installedFromVcs = false;
        }

if ($repositories !== null && $addRepository && is_file('composer.lock')) {
            unlink('composer.lock');
        }

$composer = Factory::create($io, null, $disablePlugins, $disableScripts);

// add the repository to the composer.json and use it for the install run later
        if ($repositories !== null && $addRepository) {
            foreach ($repositories as $index => $repo) {
                $repoConfig = RepositoryFactory::configFromString($io, $composer->getConfig(), $repo, true);
                $composerJsonRepositoriesConfig = $composer->getConfig()->getRepositories();
                $name = RepositoryFactory::generateRepositoryName($index, $repoConfig, $composerJsonRepositoriesConfig);
                $configSource = new JsonConfigSource(new JsonFile('composer.json'));

if (
                    (isset($repoConfig['packagist']) && $repoConfig === array('packagist' => false))
                    || (isset($repoConfig['packagist.org']) && $repoConfig === array('packagist.org' => false))
                ) {
                    $configSource->addRepository('packagist.org', false);
                } else {
                    $configSource->addRepository($name, $repoConfig, false);
                }

$composer = Factory::create($io, null, $disablePlugins);
            }
        }

$process = new ProcessExecutor($io);
        $fs = new Filesystem($process);

// dispatch event
        $composer->getEventDispatcher()->dispatchScript(ScriptEvents::POST_ROOT_PACKAGE_INSTALL, $installDevPackages);

// use the new config including the newly installed project
        $config = $composer->getConfig();
        list($preferSource, $preferDist) = $this->getPreferredInstallOptions($config, $input);

// install dependencies of the created project
        if ($noInstall === false) {
            $composer->getInstallationManager()->setOutputProgress(!$noProgress);

$installer = Installer::create($io, $composer);
            $installer->setPreferSource($preferSource)
                ->setPreferDist($preferDist)
                ->setDevMode($installDevPackages)
                ->setPlatformRequirementFilter($platformRequirementFilter)
                ->setSuggestedPackagesReporter($this->suggestedPackagesReporter)
                ->setOptimizeAutoloader($config->get('optimize-autoloader'))
                ->setClassMapAuthoritative($config->get('classmap-authoritative'))
                ->setApcuAutoloader($config->get('apcu-autoloader'));

if (!$composer->getLocker()->isLocked()) {
                $installer->setUpdate(true);
            }

if ($disablePlugins) {
                $installer->disablePlugins();
            }

$status = $installer->run();
            if (0 !== $status) {
                return $status;
            }
        }

$hasVcs = $installedFromVcs;
        if (
            !$input->getOption('keep-vcs')
            && $installedFromVcs
            && (
                $input->getOption('remove-vcs')
                || !$io->isInteractive()
                || $io->askConfirmation('<info>Do you want to remove the existing VCS (.git, .svn..) history?</info> [<comment>Y,n</comment>]? ')
            )
        ) {
            $finder = new Finder();
            $finder->depth(0)->directories()->in(getcwd())->ignoreVCS(false)->ignoreDotFiles(false);
            foreach (array('.svn', '_svn', 'CVS', '_darcs', '.arch-params', '.monotone', '.bzr', '.git', '.hg', '.fslckout', '_FOSSIL_') as $vcsName) {
                $finder->name($vcsName);
            }

try {
                $dirs = iterator_to_array($finder);
                unset($finder);
                foreach ($dirs as $dir) {
                    if (!$fs->removeDirectory($dir)) {
                        throw new \RuntimeException('Could not remove '.$dir);
                    }
                }
            } catch (\Exception $e) {
                $io->writeError('<error>An error occurred while removing the VCS metadata: '.$e->getMessage().'</error>');
            }

$hasVcs = false;
        }

// rewriting self.version dependencies with explicit version numbers if the package's vcs metadata is gone
        if (!$hasVcs) {
            $package = $composer->getPackage();
            $configSource = new JsonConfigSource(new JsonFile('composer.json'));
            foreach (BasePackage::$supportedLinkTypes as $type => $meta) {
                foreach ($package->{'get'.$meta['method']}() as $link) {
                    if ($link->getPrettyConstraint() === 'self.version') {
                        $configSource->addLink($type, $link->getTarget(), $package->getPrettyVersion());
                    }
                }
            }
        }

// dispatch event
        $composer->getEventDispatcher()->dispatchScript(ScriptEvents::POST_CREATE_PROJECT_CMD, $installDevPackages);

chdir($oldCwd);
        $vendorComposerDir = $config->get('vendor-dir').'/composer';
        if (is_dir($vendorComposerDir) && $fs->isDirEmpty($vendorComposerDir)) {
            Silencer::call('rmdir', $vendorComposerDir);
            $vendorDir = $config->get('vendor-dir');
            if (is_dir($vendorDir) && $fs->isDirEmpty($vendorDir)) {
                Silencer::call('rmdir', $vendorDir);
            }
        }

return 0;
    }

/**
     * @param string             $packageName
     * @param string|null        $directory
     * @param string|null        $packageVersion
     * @param string|null        $stability
     * @param bool               $preferSource
     * @param bool               $preferDist
     * @param bool               $installDevPackages
     * @param array<string>|null $repositories
     * @param bool               $disablePlugins
     * @param bool               $disableScripts
     * @param bool               $noProgress
     * @param bool               $secureHttp
     *
     * @return bool
     * @throws \Exception
     */
    protected function installRootPackage(IOInterface $io, Config $config, $packageName, PlatformRequirementFilterInterface $platformRequirementFilter, $directory = null, $packageVersion = null, $stability = 'stable', $preferSource = false, $preferDist = false, $installDevPackages = false, array $repositories = null, $disablePlugins = false, $disableScripts = false, $noProgress = false, $secureHttp = true)
    {
        if (!$secureHttp) {
            $config->merge(array('config' => array('secure-http' => false)), Config::SOURCE_COMMAND);
        }

$parser = new VersionParser();
        $requirements = $parser->parseNameVersionPairs(array($packageName));
        $name = strtolower($requirements[0]['name']);
        if (!$packageVersion && isset($requirements[0]['version'])) {
            $packageVersion = $requirements[0]['version'];
        }

// if no directory was specified, use the 2nd part of the package name
        if (null === $directory) {
            $parts = explode("/", $name, 2);
            $directory = getcwd() . DIRECTORY_SEPARATOR . array_pop($parts);
        }

$process = new ProcessExecutor($io);
        $fs = new Filesystem($process);
        if (!$fs->isAbsolutePath($directory)) {
            $directory = getcwd() . DIRECTORY_SEPARATOR . $directory;
        }

$io->writeError('<info>Creating a "' . $packageName . '" project at "' . $fs->findShortestPath(getcwd(), $directory, true) . '"</info>');

if (file_exists($directory)) {
            if (!is_dir($directory)) {
                throw new \InvalidArgumentException('Cannot create project directory at "'.$directory.'", it exists as a file.');
            }
            if (!$fs->isDirEmpty($directory)) {
                throw new \InvalidArgumentException('Project directory "'.$directory.'" is not empty.');
            }
        }

if (null === $stability) {
            if (null === $packageVersion) {
                $stability = 'stable';
            } elseif (Preg::isMatch('{^[^,\s]*?@('.implode('|', array_keys(BasePackage::$stabilities)).')$}i', $packageVersion, $match)) {
                $stability = $match[1];
            } else {
                $stability = VersionParser::parseStability($packageVersion);
            }
        }

$stability = VersionParser::normalizeStability($stability);

if (!isset(BasePackage::$stabilities[$stability])) {
            throw new \InvalidArgumentException('Invalid stability provided ('.$stability.'), must be one of: '.implode(', ', array_keys(BasePackage::$stabilities)));
        }

$composer = Factory::create($io, $config->all(), $disablePlugins);
        $config = $composer->getConfig();
        $rm = $composer->getRepositoryManager();

$repositorySet = new RepositorySet($stability);
        if (null === $repositories) {
            $repositorySet->addRepository(new CompositeRepository(RepositoryFactory::defaultRepos($io, $config, $rm)));
        } else {
            foreach ($repositories as $repo) {
                $repoConfig = RepositoryFactory::configFromString($io, $config, $repo, true);
                if (
                    (isset($repoConfig['packagist']) && $repoConfig === array('packagist' => false))
                    || (isset($repoConfig['packagist.org']) && $repoConfig === array('packagist.org' => false))
                ) {
                    continue;
                }
                $repositorySet->addRepository(RepositoryFactory::createRepo($io, $config, $repoConfig, $rm));
            }
        }

$platformOverrides = $config->get('platform') ?: array();
        $platformRepo = new PlatformRepository(array(), $platformOverrides);

// find the latest version if there are multiple
        $versionSelector = new VersionSelector($repositorySet, $platformRepo);
        $package = $versionSelector->findBestCandidate($name, $packageVersion, $stability, $platformRequirementFilter);

if (!$package) {
            $errorMessage = "Could not find package $name with " . ($packageVersion ? "version $packageVersion" : "stability $stability");
            if (!($platformRequirementFilter instanceof IgnoreAllPlatformRequirementFilter) && $versionSelector->findBestCandidate($name, $packageVersion, $stability, PlatformRequirementFilterFactory::ignoreAll())) {
                throw new \InvalidArgumentException($errorMessage .' in a version installable using your PHP version, PHP extensions and Composer version.');
            }

throw new \InvalidArgumentException($errorMessage .'.');
        }

// handler Ctrl+C for unix-like systems
        if (function_exists('pcntl_async_signals') && function_exists('pcntl_signal')) {
            @mkdir($directory, 0777, true);
            if ($realDir = realpath($directory)) {
                pcntl_async_signals(true);
                pcntl_signal(SIGINT, function () use ($realDir) {
                    $fs = new Filesystem();
                    $fs->removeDirectory($realDir);
                    exit(130);
                });
            }
        }
        // handler Ctrl+C for Windows on PHP 7.4+
        if (function_exists('sapi_windows_set_ctrl_handler') && PHP_SAPI === 'cli') {
            @mkdir($directory, 0777, true);
            if ($realDir = realpath($directory)) {
                sapi_windows_set_ctrl_handler(function () use ($realDir) {
                    $fs = new Filesystem();
                    $fs->removeDirectory($realDir);
                    exit(130);
                });
            }
        }

// avoid displaying 9999999-dev as version if default-branch was selected
        if ($package instanceof AliasPackage && $package->getPrettyVersion() === VersionParser::DEFAULT_BRANCH_ALIAS) {
            $package = $package->getAliasOf();
        }

$io->writeError('<info>Installing ' . $package->getName() . ' (' . $package->getFullPrettyVersion(false) . ')</info>');

if ($disablePlugins) {
            $io->writeError('<info>Plugins have been disabled.</info>');
        }

if ($package instanceof AliasPackage) {
            $package = $package->getAliasOf();
        }

$dm = $composer->getDownloadManager();
        $dm->setPreferSource($preferSource)
            ->setPreferDist($preferDist);

$projectInstaller = new ProjectInstaller($directory, $dm, $fs);
        $im = $composer->getInstallationManager();
        $im->setOutputProgress(!$noProgress);
        $im->addInstaller($projectInstaller);
        $im->execute(new InstalledArrayRepository(), array(new InstallOperation($package)));
        $im->notifyInstalls($io);

// collect suggestions
        $this->suggestedPackagesReporter->addSuggestionsFromPackage($package);

$installedFromVcs = 'source' === $package->getInstallationSource();

$io->writeError('<info>Created project in ' . $directory . '</info>');
        chdir($directory);

Platform::putEnv('COMPOSER_ROOT_VERSION', $package->getPrettyVersion());

return $installedFromVcs;
    }
}
<?php

namespace Composer\Command;

use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterFactory;
use Composer\Plugin\CommandEvent;
use Composer\Plugin\PluginEvents;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class DumpAutoloadCommand extends BaseCommand
{
    /**
     * @return void
     */
    protected function configure()
    {
        $this
            ->setName('dump-autoload')
            ->setAliases(array('dumpautoload'))
            ->setDescription('Dumps the autoloader.')
            ->setDefinition(array(
                new InputOption('optimize', 'o', InputOption::VALUE_NONE, 'Optimizes PSR0 and PSR4 packages to be loaded with classmaps too, good for production.'),
                new InputOption('classmap-authoritative', 'a', InputOption::VALUE_NONE, 'Autoload classes from the classmap only. Implicitly enables `--optimize`.'),
                new InputOption('apcu', null, InputOption::VALUE_NONE, 'Use APCu to cache found/not-found classes.'),
                new InputOption('apcu-prefix', null, InputOption::VALUE_REQUIRED, 'Use a custom prefix for the APCu autoloader cache. Implicitly enables --apcu'),
                new InputOption('dev', null, InputOption::VALUE_NONE, 'Enables autoload-dev rules. Composer will by default infer this automatically according to the last install or update --no-dev state.'),
                new InputOption('no-dev', null, InputOption::VALUE_NONE, 'Disables autoload-dev rules. Composer will by default infer this automatically according to the last install or update --no-dev state.'),
                new InputOption('ignore-platform-req', null, InputOption::VALUE_REQUIRED | InputOption::VALUE_IS_ARRAY, 'Ignore a specific platform requirement (php & ext- packages).'),
                new InputOption('ignore-platform-reqs', null, InputOption::VALUE_NONE, 'Ignore all platform requirements (php & ext- packages).'),
            ))
            ->setHelp(
                <<<EOT
<info>php composer.phar dump-autoload</info>

Read more at https://getcomposer.org/doc/03-cli.md#dump-autoload-dumpautoload-
EOT
            )
        ;
    }

/**
     * @return int
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $composer = $this->getComposer();

$commandEvent = new CommandEvent(PluginEvents::COMMAND, 'dump-autoload', $input, $output);
        $composer->getEventDispatcher()->dispatch($commandEvent->getName(), $commandEvent);

$installationManager = $composer->getInstallationManager();
        $localRepo = $composer->getRepositoryManager()->getLocalRepository();
        $package = $composer->getPackage();
        $config = $composer->getConfig();

$optimize = $input->getOption('optimize') || $config->get('optimize-autoloader');
        $authoritative = $input->getOption('classmap-authoritative') || $config->get('classmap-authoritative');
        $apcuPrefix = $input->getOption('apcu-prefix');
        $apcu = $apcuPrefix !== null || $input->getOption('apcu') || $config->get('apcu-autoloader');

if ($authoritative) {
            $this->getIO()->write('<info>Generating optimized autoload files (authoritative)</info>');
        } elseif ($optimize) {
            $this->getIO()->write('<info>Generating optimized autoload files</info>');
        } else {
            $this->getIO()->write('<info>Generating autoload files</info>');
        }

$ignorePlatformReqs = $input->getOption('ignore-platform-reqs') ?: ($input->getOption('ignore-platform-req') ?: false);

$generator = $composer->getAutoloadGenerator();
        if ($input->getOption('no-dev')) {
            $generator->setDevMode(false);
        }
        if ($input->getOption('dev')) {
            if ($input->getOption('no-dev')) {
                throw new \InvalidArgumentException('You can not use both --no-dev and --dev as they conflict with each other.');
            }
            $generator->setDevMode(true);
        }
        $generator->setClassMapAuthoritative($authoritative);
        $generator->setRunScripts(true);
        $generator->setApcu($apcu, $apcuPrefix);
        $generator->setPlatformRequirementFilter(PlatformRequirementFilterFactory::fromBoolOrList($ignorePlatformReqs));
        $numberOfClasses = $generator->dump($config, $localRepo, $package, $installationManager, 'composer', $optimize);

if ($authoritative) {
            $this->getIO()->write('<info>Generated optimized autoload files (authoritative) containing '. $numberOfClasses .' classes</info>');
        } elseif ($optimize) {
            $this->getIO()->write('<info>Generated optimized autoload files containing '. $numberOfClasses .' classes</info>');
        } else {
            $this->getIO()->write('<info>Generated autoload files</info>');
        }

return 0;
    }
}
<?php

namespace Composer\Command;

use Composer\DependencyResolver\Operation\InstallOperation;
use Composer\DependencyResolver\Operation\UninstallOperation;
use Composer\DependencyResolver\Transaction;
use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterFactory;
use Composer\Package\AliasPackage;
use Composer\Package\BasePackage;
use Composer\Pcre\Preg;
use Composer\Plugin\CommandEvent;
use Composer\Plugin\PluginEvents;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class ReinstallCommand extends BaseCommand
{
    /**
     * @return void
     */
    protected function configure()
    {
        $this
            ->setName('reinstall')
            ->setDescription('Uninstalls and reinstalls the given package names')
            ->setDefinition(array(
                new InputOption('prefer-source', null, InputOption::VALUE_NONE, 'Forces installation from package sources when possible, including VCS information.'),
                new InputOption('prefer-dist', null, InputOption::VALUE_NONE, 'Forces installation from package dist (default behavior).'),
                new InputOption('prefer-install', null, InputOption::VALUE_REQUIRED, 'Forces installation from package dist|source|auto (auto chooses source for dev versions, dist for the rest).'),
                new InputOption('no-autoloader', null, InputOption::VALUE_NONE, 'Skips autoloader generation'),
                new InputOption('no-progress', null, InputOption::VALUE_NONE, 'Do not output download progress.'),
                new InputOption('optimize-autoloader', 'o', InputOption::VALUE_NONE, 'Optimize autoloader during autoloader dump'),
                new InputOption('classmap-authoritative', 'a', InputOption::VALUE_NONE, 'Autoload classes from the classmap only. Implicitly enables `--optimize-autoloader`.'),
                new InputOption('apcu-autoloader', null, InputOption::VALUE_NONE, 'Use APCu to cache found/not-found classes.'),
                new InputOption('apcu-autoloader-prefix', null, InputOption::VALUE_REQUIRED, 'Use a custom prefix for the APCu autoloader cache. Implicitly enables --apcu-autoloader'),
                new InputOption('ignore-platform-req', null, InputOption::VALUE_REQUIRED | InputOption::VALUE_IS_ARRAY, 'Ignore a specific platform requirement (php & ext- packages).'),
                new InputOption('ignore-platform-reqs', null, InputOption::VALUE_NONE, 'Ignore all platform requirements (php & ext- packages).'),
                new InputArgument('packages', InputArgument::IS_ARRAY | InputArgument::REQUIRED, 'List of package names to reinstall, can include a wildcard (*) to match any substring.'),
            ))
            ->setHelp(
                <<<EOT
The <info>reinstall</info> command looks up installed packages by name,
uninstalls them and reinstalls them. This lets you do a clean install
of a package if you messed with its files, or if you wish to change
the installation type using --prefer-install.

<info>php composer.phar reinstall acme/foo "acme/bar-*"</info>

Read more at https://getcomposer.org/doc/03-cli.md#reinstall
EOT
            )
        ;
    }

protected function execute(InputInterface $input, OutputInterface $output)
    {
        $io = $this->getIO();

$composer = $this->getComposer(true, $input->getOption('no-plugins'), $input->getOption('no-scripts'));

$localRepo = $composer->getRepositoryManager()->getLocalRepository();
        $packagesToReinstall = array();
        $packageNamesToReinstall = array();
        foreach ($input->getArgument('packages') as $pattern) {
            $patternRegexp = BasePackage::packageNameToRegexp($pattern);
            $matched = false;
            foreach ($localRepo->getCanonicalPackages() as $package) {
                if (Preg::isMatch($patternRegexp, $package->getName())) {
                    $matched = true;
                    $packagesToReinstall[] = $package;
                    $packageNamesToReinstall[] = $package->getName();
                }
            }

if (!$matched) {
                $io->writeError('<warning>Pattern "' . $pattern . '" does not match any currently installed packages.</warning>');
            }
        }

if (!$packagesToReinstall) {
            $io->writeError('<warning>Found no packages to reinstall, aborting.</warning>');

return 1;
        }

$uninstallOperations = array();
        foreach ($packagesToReinstall as $package) {
            $uninstallOperations[] = new UninstallOperation($package);
        }

// make sure we have a list of install operations ordered by dependency/plugins
        $presentPackages = $localRepo->getPackages();
        $resultPackages = $presentPackages;
        foreach ($presentPackages as $index => $package) {
            if (in_array($package->getName(), $packageNamesToReinstall, true)) {
                unset($presentPackages[$index]);
            }
        }
        $transaction = new Transaction($presentPackages, $resultPackages);
        $installOperations = $transaction->getOperations();

// reverse-sort the uninstalls based on the install order
        $installOrder = array();
        foreach ($installOperations as $index => $op) {
            if ($op instanceof InstallOperation && !$op->getPackage() instanceof AliasPackage) {
                $installOrder[$op->getPackage()->getName()] = $index;
            }
        }
        usort($uninstallOperations, function ($a, $b) use ($installOrder) {
            return $installOrder[$b->getPackage()->getName()] - $installOrder[$a->getPackage()->getName()];
        });

$commandEvent = new CommandEvent(PluginEvents::COMMAND, 'reinstall', $input, $output);
        $composer->getEventDispatcher()->dispatch($commandEvent->getName(), $commandEvent);

$config = $composer->getConfig();
        list($preferSource, $preferDist) = $this->getPreferredInstallOptions($config, $input);

$installationManager = $composer->getInstallationManager();
        $downloadManager = $composer->getDownloadManager();
        $package = $composer->getPackage();

$ignorePlatformReqs = $input->getOption('ignore-platform-reqs') ?: ($input->getOption('ignore-platform-req') ?: false);

$installationManager->setOutputProgress(!$input->getOption('no-progress'));
        if ($input->getOption('no-plugins')) {
            $installationManager->disablePlugins();
        }

$downloadManager->setPreferSource($preferSource);
        $downloadManager->setPreferDist($preferDist);

$installationManager->execute($localRepo, $uninstallOperations, true);
        $installationManager->execute($localRepo, $installOperations, true);

if (!$input->getOption('no-autoloader')) {
            $optimize = $input->getOption('optimize-autoloader') || $config->get('optimize-autoloader');
            $authoritative = $input->getOption('classmap-authoritative') || $config->get('classmap-authoritative');
            $apcuPrefix = $input->getOption('apcu-autoloader-prefix');
            $apcu = $apcuPrefix !== null || $input->getOption('apcu-autoloader') || $config->get('apcu-autoloader');

$generator = $composer->getAutoloadGenerator();
            $generator->setClassMapAuthoritative($authoritative);
            $generator->setApcu($apcu, $apcuPrefix);
            $generator->setPlatformRequirementFilter(PlatformRequirementFilterFactory::fromBoolOrList($ignorePlatformReqs));
            $generator->dump($config, $localRepo, $package, $installationManager, 'composer', $optimize);
        }

return 0;
    }
}
<?php

namespace Composer\Command;

use Composer\Cache;
use Composer\Factory;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * @author David Neilsen <petah.p@gmail.com>
 */
class ClearCacheCommand extends BaseCommand
{
    /**
     * @return void
     */
    protected function configure()
    {
        $this
            ->setName('clear-cache')
            ->setAliases(array('clearcache', 'cc'))
            ->setDescription('Clears composer\'s internal package cache.')
            ->setHelp(
                <<<EOT
The <info>clear-cache</info> deletes all cached packages from composer's
cache directory.

Read more at https://getcomposer.org/doc/03-cli.md#clear-cache-clearcache-cc
EOT
            )
        ;
    }

/**
     * @return int
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $config = Factory::createConfig();
        $io = $this->getIO();

$cachePaths = array(
            'cache-vcs-dir' => $config->get('cache-vcs-dir'),
            'cache-repo-dir' => $config->get('cache-repo-dir'),
            'cache-files-dir' => $config->get('cache-files-dir'),
            'cache-dir' => $config->get('cache-dir'),
        );

foreach ($cachePaths as $key => $cachePath) {
            $cachePath = realpath($cachePath);
            if (!$cachePath) {
                $io->writeError("<info>Cache directory does not exist ($key): $cachePath</info>");

continue;
            }
            $cache = new Cache($io, $cachePath);
            $cache->setReadOnly($config->get('cache-read-only'));
            if (!$cache->isEnabled()) {
                $io->writeError("<info>Cache is not enabled ($key): $cachePath</info>");

continue;
            }

$io->writeError("<info>Clearing cache ($key): $cachePath</info>");
            $cache->clear();
        }

$io->writeError('<info>All caches cleared.</info>');

return 0;
    }
}
<?php

namespace Composer\Command;

use Composer\Config\JsonConfigSource;
use Composer\DependencyResolver\Request;
use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterFactory;
use Composer\Installer;
use Composer\Pcre\Preg;
use Composer\Plugin\CommandEvent;
use Composer\Plugin\PluginEvents;
use Composer\Json\JsonFile;
use Composer\Factory;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Output\OutputInterface;
use Composer\Package\BasePackage;

/**
 * @author Pierre du Plessis <pdples@gmail.com>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class RemoveCommand extends BaseCommand
{
    /**
     * @return void
     */
    protected function configure()
    {
        $this
            ->setName('remove')
            ->setDescription('Removes a package from the require or require-dev.')
            ->setDefinition(array(
                new InputArgument('packages', InputArgument::IS_ARRAY | InputArgument::REQUIRED, 'Packages that should be removed.'),
                new InputOption('dev', null, InputOption::VALUE_NONE, 'Removes a package from the require-dev section.'),
                new InputOption('dry-run', null, InputOption::VALUE_NONE, 'Outputs the operations but will not execute anything (implicitly enables --verbose).'),
                new InputOption('no-progress', null, InputOption::VALUE_NONE, 'Do not output download progress.'),
                new InputOption('no-update', null, InputOption::VALUE_NONE, 'Disables the automatic update of the dependencies (implies --no-install).'),
                new InputOption('no-install', null, InputOption::VALUE_NONE, 'Skip the install step after updating the composer.lock file.'),
                new InputOption('update-no-dev', null, InputOption::VALUE_NONE, 'Run the dependency update with the --no-dev option.'),
                new InputOption('update-with-dependencies', 'w', InputOption::VALUE_NONE, 'Allows inherited dependencies to be updated with explicit dependencies. (Deprecrated, is now default behavior)'),
                new InputOption('update-with-all-dependencies', 'W', InputOption::VALUE_NONE, 'Allows all inherited dependencies to be updated, including those that are root requirements.'),
                new InputOption('with-all-dependencies', null, InputOption::VALUE_NONE, 'Alias for --update-with-all-dependencies'),
                new InputOption('no-update-with-dependencies', null, InputOption::VALUE_NONE, 'Does not allow inherited dependencies to be updated with explicit dependencies.'),
                new InputOption('unused', null, InputOption::VALUE_NONE, 'Remove all packages which are locked but not required by any other package.'),
                new InputOption('ignore-platform-req', null, InputOption::VALUE_REQUIRED | InputOption::VALUE_IS_ARRAY, 'Ignore a specific platform requirement (php & ext- packages).'),
                new InputOption('ignore-platform-reqs', null, InputOption::VALUE_NONE, 'Ignore all platform requirements (php & ext- packages).'),
                new InputOption('optimize-autoloader', 'o', InputOption::VALUE_NONE, 'Optimize autoloader during autoloader dump'),
                new InputOption('classmap-authoritative', 'a', InputOption::VALUE_NONE, 'Autoload classes from the classmap only. Implicitly enables `--optimize-autoloader`.'),
                new InputOption('apcu-autoloader', null, InputOption::VALUE_NONE, 'Use APCu to cache found/not-found classes.'),
                new InputOption('apcu-autoloader-prefix', null, InputOption::VALUE_REQUIRED, 'Use a custom prefix for the APCu autoloader cache. Implicitly enables --apcu-autoloader'),
            ))
            ->setHelp(
                <<<EOT
The <info>remove</info> command removes a package from the current
list of installed packages

<info>php composer.phar remove</info>

Read more at https://getcomposer.org/doc/03-cli.md#remove
EOT
            )
        ;
    }

/**
     * @return void
     */
    protected function interact(InputInterface $input, OutputInterface $output)
    {
        if ($input->getOption('unused')) {
            $composer = $this->getComposer();
            $locker = $composer->getLocker();
            if (!$locker->isLocked()) {
                throw new \UnexpectedValueException('A valid composer.lock file is required to run this command with --unused');
            }

$lockedPackages = $locker->getLockedRepository()->getPackages();

$required = array();
            foreach (array_merge($composer->getPackage()->getRequires(), $composer->getPackage()->getDevRequires()) as $link) {
                $required[$link->getTarget()] = true;
            }

do {
                $found = false;
                foreach ($lockedPackages as $index => $package) {
                    foreach ($package->getNames() as $name) {
                        if (isset($required[$name])) {
                            foreach ($package->getRequires() as $link) {
                                $required[$link->getTarget()] = true;
                            }
                            $found = true;
                            unset($lockedPackages[$index]);
                            break;
                        }
                    }
                }
            } while ($found);

$unused = array();
            foreach ($lockedPackages as $package) {
                $unused[] = $package->getName();
            }
            $input->setArgument('packages', array_merge($input->getArgument('packages'), $unused));

if (!$input->getArgument('packages')) {
                $this->getIO()->writeError('<info>No unused packages to remove</info>');
                $this->setCode(function () {
                    return 0;
                });
            }
        }
    }

/**
     * @return int
     * @throws \Seld\JsonLint\ParsingException
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $packages = $input->getArgument('packages');
        $packages = array_map('strtolower', $packages);

$file = Factory::getComposerFile();

$jsonFile = new JsonFile($file);
        $composer = $jsonFile->read();
        $composerBackup = file_get_contents($jsonFile->getPath());

$json = new JsonConfigSource($jsonFile);

$type = $input->getOption('dev') ? 'require-dev' : 'require';
        $altType = !$input->getOption('dev') ? 'require-dev' : 'require';
        $io = $this->getIO();

if ($input->getOption('update-with-dependencies')) {
            $io->writeError('<warning>You are using the deprecated option "update-with-dependencies". This is now default behaviour. The --no-update-with-dependencies option can be used to remove a package without its dependencies.</warning>');
        }

// make sure name checks are done case insensitively
        foreach (array('require', 'require-dev') as $linkType) {
            if (isset($composer[$linkType])) {
                foreach ($composer[$linkType] as $name => $version) {
                    $composer[$linkType][strtolower($name)] = $name;
                }
            }
        }

$dryRun = $input->getOption('dry-run');
        $toRemove = array();
        foreach ($packages as $package) {
            if (isset($composer[$type][$package])) {
                if ($dryRun) {
                    $toRemove[$type][] = $composer[$type][$package];
                } else {
                    $json->removeLink($type, $composer[$type][$package]);
                }
            } elseif (isset($composer[$altType][$package])) {
                $io->writeError('<warning>' . $composer[$altType][$package] . ' could not be found in ' . $type . ' but it is present in ' . $altType . '</warning>');
                if ($io->isInteractive()) {
                    if ($io->askConfirmation('Do you want to remove it from ' . $altType . ' [<comment>yes</comment>]? ')) {
                        if ($dryRun) {
                            $toRemove[$altType][] = $composer[$altType][$package];
                        } else {
                            $json->removeLink($altType, $composer[$altType][$package]);
                        }
                    }
                }
            } elseif (isset($composer[$type]) && $matches = Preg::grep(BasePackage::packageNameToRegexp($package), array_keys($composer[$type]))) {
                foreach ($matches as $matchedPackage) {
                    if ($dryRun) {
                        $toRemove[$type][] = $matchedPackage;
                    } else {
                        $json->removeLink($type, $matchedPackage);
                    }
                }
            } elseif (isset($composer[$altType]) && $matches = Preg::grep(BasePackage::packageNameToRegexp($package), array_keys($composer[$altType]))) {
                foreach ($matches as $matchedPackage) {
                    $io->writeError('<warning>' . $matchedPackage . ' could not be found in ' . $type . ' but it is present in ' . $altType . '</warning>');
                    if ($io->isInteractive()) {
                        if ($io->askConfirmation('Do you want to remove it from ' . $altType . ' [<comment>yes</comment>]? ')) {
                            if ($dryRun) {
                                $toRemove[$altType][] = $matchedPackage;
                            } else {
                                $json->removeLink($altType, $matchedPackage);
                            }
                        }
                    }
                }
            } else {
                $io->writeError('<warning>'.$package.' is not required in your composer.json and has not been removed</warning>');
            }
        }

$io->writeError('<info>'.$file.' has been updated</info>');

if ($input->getOption('no-update')) {
            return 0;
        }

if ($composer = $this->getComposer(false)) {
            $composer->getPluginManager()->deactivateInstalledPlugins();
        }

// Update packages
        $this->resetComposer();
        $composer = $this->getComposer(true, $input->getOption('no-plugins'), $input->getOption('no-scripts'));

if ($dryRun) {
            $rootPackage = $composer->getPackage();
            $links = array(
                'require' => $rootPackage->getRequires(),
                'require-dev' => $rootPackage->getDevRequires(),
            );
            foreach ($toRemove as $type => $names) {
                foreach ($names as $name) {
                    unset($links[$type][$name]);
                }
            }
            $rootPackage->setRequires($links['require']);
            $rootPackage->setDevRequires($links['require-dev']);
        }

$commandEvent = new CommandEvent(PluginEvents::COMMAND, 'remove', $input, $output);
        $composer->getEventDispatcher()->dispatch($commandEvent->getName(), $commandEvent);

$composer->getInstallationManager()->setOutputProgress(!$input->getOption('no-progress'));

$install = Installer::create($io, $composer);

$updateAllowTransitiveDependencies = Request::UPDATE_LISTED_WITH_TRANSITIVE_DEPS_NO_ROOT_REQUIRE;
        $flags = '';
        if ($input->getOption('update-with-all-dependencies') || $input->getOption('with-all-dependencies')) {
            $updateAllowTransitiveDependencies = Request::UPDATE_LISTED_WITH_TRANSITIVE_DEPS;
            $flags .= ' --with-all-dependencies';
        } elseif ($input->getOption('no-update-with-dependencies')) {
            $updateAllowTransitiveDependencies = Request::UPDATE_ONLY_LISTED;
            $flags .= ' --with-dependencies';
        }

$io->writeError('<info>Running composer update '.implode(' ', $packages).$flags.'</info>');

$ignorePlatformReqs = $input->getOption('ignore-platform-reqs') ?: ($input->getOption('ignore-platform-req') ?: false);

$install
            ->setVerbose($input->getOption('verbose'))
            ->setDevMode($updateDevMode)
            ->setOptimizeAutoloader($optimize)
            ->setClassMapAuthoritative($authoritative)
            ->setApcuAutoloader($apcu, $apcuPrefix)
            ->setUpdate(true)
            ->setInstall(!$input->getOption('no-install'))
            ->setUpdateAllowTransitiveDependencies($updateAllowTransitiveDependencies)
            ->setPlatformRequirementFilter(PlatformRequirementFilterFactory::fromBoolOrList($ignorePlatformReqs))
            ->setDryRun($dryRun)
        ;

// if no lock is present, we do not do a partial update as
        // this is not supported by the Installer
        if ($composer->getLocker()->isLocked()) {
            $install->setUpdateAllowList($packages);
        }

$status = $install->run();
        if ($status !== 0) {
            $io->writeError("\n".'<error>Removal failed, reverting '.$file.' to its original content.</error>');
            file_put_contents($jsonFile->getPath(), $composerBackup);
        }

if (!$dryRun) {
            foreach ($packages as $package) {
                if ($composer->getRepositoryManager()->getLocalRepository()->findPackages($package)) {
                    $io->writeError('<error>Removal failed, '.$package.' is still present, it may be required by another package. See `composer why '.$package.'`.</error>');

return 2;
                }
            }
        }

return $status;
    }
}
<?php

namespace Composer\Command;

use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterFactory;
use Composer\Installer;
use Composer\Plugin\CommandEvent;
use Composer\Plugin\PluginEvents;
use Composer\Util\HttpDownloader;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 * @author Ryan Weaver <ryan@knplabs.com>
 * @author Konstantin Kudryashov <ever.zet@gmail.com>
 * @author Nils Adermann <naderman@naderman.de>
 */
class InstallCommand extends BaseCommand
{
    /**
     * @return void
     */
    protected function configure()
    {
        $this
            ->setName('install')
            ->setAliases(array('i'))
            ->setDescription('Installs the project dependencies from the composer.lock file if present, or falls back on the composer.json.')
            ->setDefinition(array(
                new InputOption('prefer-source', null, InputOption::VALUE_NONE, 'Forces installation from package sources when possible, including VCS information.'),
                new InputOption('prefer-dist', null, InputOption::VALUE_NONE, 'Forces installation from package dist (default behavior).'),
                new InputOption('prefer-install', null, InputOption::VALUE_REQUIRED, 'Forces installation from package dist|source|auto (auto chooses source for dev versions, dist for the rest).'),
                new InputOption('dry-run', null, InputOption::VALUE_NONE, 'Outputs the operations but will not execute anything (implicitly enables --verbose).'),
                new InputOption('dev', null, InputOption::VALUE_NONE, 'DEPRECATED: Enables installation of require-dev packages (enabled by default, only present for BC).'),
                new InputOption('no-suggest', null, InputOption::VALUE_NONE, 'DEPRECATED: This flag does not exist anymore.'),
                new InputOption('no-dev', null, InputOption::VALUE_NONE, 'Disables installation of require-dev packages.'),
                new InputOption('no-autoloader', null, InputOption::VALUE_NONE, 'Skips autoloader generation'),
                new InputOption('no-progress', null, InputOption::VALUE_NONE, 'Do not output download progress.'),
                new InputOption('no-install', null, InputOption::VALUE_NONE, 'Do not use, only defined here to catch misuse of the install command.'),
                new InputOption('verbose', 'v|vv|vvv', InputOption::VALUE_NONE, 'Shows more details including new commits pulled in when updating packages.'),
                new InputOption('optimize-autoloader', 'o', InputOption::VALUE_NONE, 'Optimize autoloader during autoloader dump'),
                new InputOption('classmap-authoritative', 'a', InputOption::VALUE_NONE, 'Autoload classes from the classmap only. Implicitly enables `--optimize-autoloader`.'),
                new InputOption('apcu-autoloader', null, InputOption::VALUE_NONE, 'Use APCu to cache found/not-found classes.'),
                new InputOption('apcu-autoloader-prefix', null, InputOption::VALUE_REQUIRED, 'Use a custom prefix for the APCu autoloader cache. Implicitly enables --apcu-autoloader'),
                new InputOption('ignore-platform-req', null, InputOption::VALUE_REQUIRED | InputOption::VALUE_IS_ARRAY, 'Ignore a specific platform requirement (php & ext- packages).'),
                new InputOption('ignore-platform-reqs', null, InputOption::VALUE_NONE, 'Ignore all platform requirements (php & ext- packages).'),
                new InputArgument('packages', InputArgument::IS_ARRAY | InputArgument::OPTIONAL, 'Should not be provided, use composer require instead to add a given package to composer.json.'),
            ))
            ->setHelp(
                <<<EOT
The <info>install</info> command reads the composer.lock file from
the current directory, processes it, and downloads and installs all the
libraries and dependencies outlined in that file. If the file does not
exist it will look for composer.json and do the same.

<info>php composer.phar install</info>

Read more at https://getcomposer.org/doc/03-cli.md#install-i
EOT
            )
        ;
    }

protected function execute(InputInterface $input, OutputInterface $output)
    {
        $io = $this->getIO();
        if ($input->getOption('dev')) {
            $io->writeError('<warning>You are using the deprecated option "--dev". It has no effect and will break in Composer 3.</warning>');
        }
        if ($input->getOption('no-suggest')) {
            $io->writeError('<warning>You are using the deprecated option "--no-suggest". It has no effect and will break in Composer 3.</warning>');
        }

if ($args = $input->getArgument('packages')) {
            $io->writeError('<error>Invalid argument '.implode(' ', $args).'. Use "composer require '.implode(' ', $args).'" instead to add packages to your composer.json.</error>');

return 1;
        }

if ($input->getOption('no-install')) {
            $io->writeError('<error>Invalid option "--no-install". Use "composer update --no-install" instead if you are trying to update the composer.lock file.</error>');

return 1;
        }

$composer = $this->getComposer(true, $input->getOption('no-plugins'), $input->getOption('no-scripts'));

if ((!$composer->getLocker() || !$composer->getLocker()->isLocked()) && !HttpDownloader::isCurlEnabled()) {
            $io->writeError('<warning>Composer is operating significantly slower than normal because you do not have the PHP curl extension enabled.</warning>');
        }

$commandEvent = new CommandEvent(PluginEvents::COMMAND, 'install', $input, $output);
        $composer->getEventDispatcher()->dispatch($commandEvent->getName(), $commandEvent);

$install = Installer::create($io, $composer);

$config = $composer->getConfig();
        list($preferSource, $preferDist) = $this->getPreferredInstallOptions($config, $input);

$optimize = $input->getOption('optimize-autoloader') || $config->get('optimize-autoloader');
        $authoritative = $input->getOption('classmap-authoritative') || $config->get('classmap-authoritative');
        $apcuPrefix = $input->getOption('apcu-autoloader-prefix');
        $apcu = $apcuPrefix !== null || $input->getOption('apcu-autoloader') || $config->get('apcu-autoloader');

$ignorePlatformReqs = $input->getOption('ignore-platform-reqs') ?: ($input->getOption('ignore-platform-req') ?: false);

$composer->getInstallationManager()->setOutputProgress(!$input->getOption('no-progress'));

if ($input->getOption('no-plugins')) {
            $install->disablePlugins();
        }

return $install->run();
    }
}
<?php

namespace Composer\Command;

use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\ArrayInput;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class OutdatedCommand extends ShowCommand
{
    /**
     * @return void
     */
    protected function configure()
    {
        $this
            ->setName('outdated')
            ->setDescription('Shows a list of installed packages that have updates available, including their latest version.')
            ->setDefinition(array(
                new InputArgument('package', InputArgument::OPTIONAL, 'Package to inspect. Or a name including a wildcard (*) to filter lists of packages instead.'),
                new InputOption('outdated', 'o', InputOption::VALUE_NONE, 'Show only packages that are outdated (this is the default, but present here for compat with `show`'),
                new InputOption('all', 'a', InputOption::VALUE_NONE, 'Show all installed packages with their latest versions'),
                new InputOption('locked', null, InputOption::VALUE_NONE, 'Shows updates for packages from the lock file, regardless of what is currently in vendor dir'),
                new InputOption('direct', 'D', InputOption::VALUE_NONE, 'Shows only packages that are directly required by the root package'),
                new InputOption('strict', null, InputOption::VALUE_NONE, 'Return a non-zero exit code when there are outdated packages'),
                new InputOption('minor-only', 'm', InputOption::VALUE_NONE, 'Show only packages that have minor SemVer-compatible updates. Use with the --outdated option.'),
                new InputOption('format', 'f', InputOption::VALUE_REQUIRED, 'Format of the output: text or json', 'text'),
                new InputOption('ignore', null, InputOption::VALUE_REQUIRED | InputOption::VALUE_IS_ARRAY, 'Ignore specified package(s). Use it with the --outdated option if you don\'t want to be informed about new versions of some packages.'),
                new InputOption('no-dev', null, InputOption::VALUE_NONE, 'Disables search in require-dev packages.'),
                new InputOption('ignore-platform-req', null, InputOption::VALUE_REQUIRED | InputOption::VALUE_IS_ARRAY, 'Ignore a specific platform requirement (php & ext- packages). Use with the --outdated option'),
                new InputOption('ignore-platform-reqs', null, InputOption::VALUE_NONE, 'Ignore all platform requirements (php & ext- packages). Use with the --outdated option'),
            ))
            ->setHelp(
                <<<EOT
The outdated command is just a proxy for `composer show -l`

The color coding (or signage if you have ANSI colors disabled) for dependency versions is as such:

- <info>green</info> (=): Dependency is in the latest version and is up to date.
- <comment>yellow</comment> (~): Dependency has a new version available that includes backwards
  compatibility breaks according to semver, so upgrade when you can but it
  may involve work.
- <highlight>red</highlight> (!): Dependency has a new version that is semver-compatible and you should upgrade it.

Read more at https://getcomposer.org/doc/03-cli.md#outdated
EOT
            )
        ;
    }

protected function execute(InputInterface $input, OutputInterface $output)
    {
        $args = array(
            'command' => 'show',
            '--latest' => true,
        );
        if (!$input->getOption('all')) {
            $args['--outdated'] = true;
        }
        if ($input->getOption('direct')) {
            $args['--direct'] = true;
        }
        if ($input->getArgument('package')) {
            $args['package'] = $input->getArgument('package');
        }
        if ($input->getOption('strict')) {
            $args['--strict'] = true;
        }
        if ($input->getOption('minor-only')) {
            $args['--minor-only'] = true;
        }
        if ($input->getOption('locked')) {
            $args['--locked'] = true;
        }
        if ($input->getOption('no-dev')) {
            $args['--no-dev'] = true;
        }
        if ($input->getOption('ignore-platform-req')) {
            $args['--ignore-platform-req'] = $input->getOption('ignore-platform-req');
        }
        if ($input->getOption('ignore-platform-reqs')) {
            $args['--ignore-platform-reqs'] = true;
        }
        $args['--format'] = $input->getOption('format');
        $args['--ignore'] = $input->getOption('ignore');

$input = new ArrayInput($args);

return $this->getApplication()->run($input, $output);
    }

/**
     * @inheritDoc
     */
    public function isProxyCommand()
    {
        return true;
    }
}
<?php

namespace Composer\Command;

use Composer\Composer;
use Composer\Factory;
use Composer\Config;
use Composer\Downloader\TransportException;
use Composer\Pcre\Preg;
use Composer\Repository\PlatformRepository;
use Composer\Plugin\CommandEvent;
use Composer\Plugin\PluginEvents;
use Composer\Util\ConfigValidator;
use Composer\Util\IniHelper;
use Composer\Util\ProcessExecutor;
use Composer\Util\HttpDownloader;
use Composer\Util\StreamContextFactory;
use Composer\Util\Platform;
use Composer\SelfUpdate\Keys;
use Composer\SelfUpdate\Versions;
use Composer\IO\NullIO;
use Composer\Package\CompletePackageInterface;
use Composer\XdebugHandler\XdebugHandler;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Process\ExecutableFinder;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class DiagnoseCommand extends BaseCommand
{
    /** @var HttpDownloader */
    protected $httpDownloader;

/** @var ProcessExecutor */
    protected $process;

/** @var int */
    protected $exitCode = 0;

/**
     * @return void
     */
    protected function configure()
    {
        $this
            ->setName('diagnose')
            ->setDescription('Diagnoses the system to identify common errors.')
            ->setHelp(
                <<<EOT
The <info>diagnose</info> command checks common errors to help debugging problems.

The process exit code will be 1 in case of warnings and 2 for errors.

Read more at https://getcomposer.org/doc/03-cli.md#diagnose
EOT
            )
        ;
    }

/**
     * @return int
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $composer = $this->getComposer(false);
        $io = $this->getIO();

if ($composer) {
            $commandEvent = new CommandEvent(PluginEvents::COMMAND, 'diagnose', $input, $output);
            $composer->getEventDispatcher()->dispatch($commandEvent->getName(), $commandEvent);

$io->write('Checking composer.json: ', false);
            $this->outputResult($this->checkComposerSchema());
        }

if ($composer) {
            $config = $composer->getConfig();
        } else {
            $config = Factory::createConfig();
        }

$config->merge(array('config' => array('secure-http' => false)), Config::SOURCE_COMMAND);
        $config->prohibitUrlByConfig('http://repo.packagist.org', new NullIO);

$this->httpDownloader = Factory::createHttpDownloader($io, $config);
        $this->process = new ProcessExecutor($io);

$io->write('Checking platform settings: ', false);
        $this->outputResult($this->checkPlatform());

$io->write('Checking git settings: ', false);
        $this->outputResult($this->checkGit());

$io->write('Checking http connectivity to packagist: ', false);
        $this->outputResult($this->checkHttp('http', $config));

$io->write('Checking https connectivity to packagist: ', false);
        $this->outputResult($this->checkHttp('https', $config));

$opts = stream_context_get_options(StreamContextFactory::getContext('http://example.org'));
        if (!empty($opts['http']['proxy'])) {
            $io->write('Checking HTTP proxy: ', false);
            $this->outputResult($this->checkHttpProxy());
        }

if ($oauth = $config->get('github-oauth')) {
            foreach ($oauth as $domain => $token) {
                $io->write('Checking '.$domain.' oauth access: ', false);
                $this->outputResult($this->checkGithubOauth($domain, $token));
            }
        } else {
            $io->write('Checking github.com rate limit: ', false);
            try {
                $rate = $this->getGithubRateLimit('github.com');
                if (!is_array($rate)) {
                    $this->outputResult($rate);
                } elseif (10 > $rate['remaining']) {
                    $io->write('<warning>WARNING</warning>');
                    $io->write(sprintf(
                        '<comment>Github has a rate limit on their API. '
                        . 'You currently have <options=bold>%u</options=bold> '
                        . 'out of <options=bold>%u</options=bold> requests left.' . PHP_EOL
                        . 'See https://developer.github.com/v3/#rate-limiting and also' . PHP_EOL
                        . '    https://getcomposer.org/doc/articles/troubleshooting.md#api-rate-limit-and-oauth-tokens</comment>',
                        $rate['remaining'],
                        $rate['limit']
                    ));
                } else {
                    $this->outputResult(true);
                }
            } catch (\Exception $e) {
                if ($e instanceof TransportException && $e->getCode() === 401) {
                    $this->outputResult('<comment>The oauth token for github.com seems invalid, run "composer config --global --unset github-oauth.github.com" to remove it</comment>');
                } else {
                    $this->outputResult($e);
                }
            }
        }

$io->write('Checking disk free space: ', false);
        $this->outputResult($this->checkDiskSpace($config));

if (strpos(__FILE__, 'phar:') === 0) {
            $io->write('Checking pubkeys: ', false);
            $this->outputResult($this->checkPubKeys($config));

$io->write('Checking composer version: ', false);
            $this->outputResult($this->checkVersion($config));
        }

$io->write(sprintf('Composer version: <comment>%s</comment>', Composer::getVersion()));

$platformOverrides = $config->get('platform') ?: array();
        $platformRepo = new PlatformRepository(array(), $platformOverrides);
        $phpPkg = $platformRepo->findPackage('php', '*');
        $phpVersion = $phpPkg->getPrettyVersion();
        if ($phpPkg instanceof CompletePackageInterface && false !== strpos($phpPkg->getDescription(), 'overridden')) {
            $phpVersion .= ' - ' . $phpPkg->getDescription();
        }

$io->write(sprintf('PHP version: <comment>%s</comment>', $phpVersion));

if (defined('PHP_BINARY')) {
            $io->write(sprintf('PHP binary path: <comment>%s</comment>', PHP_BINARY));
        }

$io->write('OpenSSL version: ' . (defined('OPENSSL_VERSION_TEXT') ? '<comment>'.OPENSSL_VERSION_TEXT.'</comment>' : '<error>missing</error>'));
        $io->write('cURL version: ' . $this->getCurlVersion());

$finder = new ExecutableFinder;
        $hasSystemUnzip = (bool) $finder->find('unzip');
        $bin7zip = '';
        if ($hasSystem7zip = (bool) $finder->find('7z', null, array('C:\Program Files\7-Zip'))) {
            $bin7zip = '7z';
        }
        if (!Platform::isWindows() && !$hasSystem7zip && $hasSystem7zip = (bool) $finder->find('7zz')) {
            $bin7zip = '7zz';
        }

$io->write(
            'zip: ' . (extension_loaded('zip') ? '<comment>extension present</comment>' : '<comment>extension not loaded</comment>')
            . ', ' . ($hasSystemUnzip ? '<comment>unzip present</comment>' : '<comment>unzip not available</comment>')
            . ', ' . ($hasSystem7zip ? '<comment>7-Zip present ('.$bin7zip.')</comment>' : '<comment>7-Zip not available</comment>')
            . (($hasSystem7zip || $hasSystemUnzip) && !function_exists('proc_open') ? ', <warning>proc_open is disabled or not present, unzip/7-z will not be usable</warning>' : '')
        );

return $this->exitCode;
    }

/**
     * @return string|true
     */
    private function checkComposerSchema()
    {
        $validator = new ConfigValidator($this->getIO());
        list($errors, , $warnings) = $validator->validate(Factory::getComposerFile());

if ($errors || $warnings) {
            $messages = array(
                'error' => $errors,
                'warning' => $warnings,
            );

$output = '';
            foreach ($messages as $style => $msgs) {
                foreach ($msgs as $msg) {
                    $output .= '<' . $style . '>' . $msg . '</' . $style . '>' . PHP_EOL;
                }
            }

return rtrim($output);
        }

return true;
    }

/**
     * @return string|true
     */
    private function checkGit()
    {
        if (!function_exists('proc_open')) {
            return '<comment>proc_open is not available, git cannot be used</comment>';
        }

$this->process->execute('git config color.ui', $output);
        if (strtolower(trim($output)) === 'always') {
            return '<comment>Your git color.ui setting is set to always, this is known to create issues. Use "git config --global color.ui true" to set it correctly.</comment>';
        }

return true;
    }

/**
     * @param string $proto
     *
     * @return string|string[]|true
     */
    private function checkHttp($proto, Config $config)
    {
        $result = $this->checkConnectivity();
        if ($result !== true) {
            return $result;
        }

$result = array();
        if ($proto === 'https' && $config->get('disable-tls') === true) {
            $tlsWarning = '<warning>Composer is configured to disable SSL/TLS protection. This will leave remote HTTPS requests vulnerable to Man-In-The-Middle attacks.</warning>';
        }

try {
            $this->httpDownloader->get($proto . '://repo.packagist.org/packages.json');
        } catch (TransportException $e) {
            if ($hints = HttpDownloader::getExceptionHints($e)) {
                foreach ($hints as $hint) {
                    $result[] = $hint;
                }
            }

$result[] = '<error>[' . get_class($e) . '] ' . $e->getMessage() . '</error>';
        }

if (isset($tlsWarning)) {
            $result[] = $tlsWarning;
        }

if (count($result) > 0) {
            return $result;
        }

return true;
    }

/**
     * @return string|true|\Exception
     */
    private function checkHttpProxy()
    {
        $result = $this->checkConnectivity();
        if ($result !== true) {
            return $result;
        }

$protocol = extension_loaded('openssl') ? 'https' : 'http';
        try {
            $json = $this->httpDownloader->get($protocol . '://repo.packagist.org/packages.json')->decodeJson();
            $hash = reset($json['provider-includes']);
            $hash = $hash['sha256'];
            $path = str_replace('%hash%', $hash, key($json['provider-includes']));
            $provider = $this->httpDownloader->get($protocol . '://repo.packagist.org/'.$path)->getBody();

if (hash('sha256', $provider) !== $hash) {
                return 'It seems that your proxy is modifying http traffic on the fly';
            }
        } catch (\Exception $e) {
            return $e;
        }

return true;
    }

/**
     * @param string $domain
     * @param string $token
     *
     * @return string|true|\Exception
     */
    private function checkGithubOauth($domain, $token)
    {
        $result = $this->checkConnectivity();
        if ($result !== true) {
            return $result;
        }

$this->getIO()->setAuthentication($domain, $token, 'x-oauth-basic');
        try {
            $url = $domain === 'github.com' ? 'https://api.'.$domain.'/' : 'https://'.$domain.'/api/v3/';

$this->httpDownloader->get($url, array(
                'retry-auth-failure' => false,
            ));

return true;
        } catch (\Exception $e) {
            if ($e instanceof TransportException && $e->getCode() === 401) {
                return '<comment>The oauth token for '.$domain.' seems invalid, run "composer config --global --unset github-oauth.'.$domain.'" to remove it</comment>';
            }

return $e;
        }
    }

/**
     * @param  string             $domain
     * @param  string             $token
     * @throws TransportException
     * @return mixed|string
     */
    private function getGithubRateLimit($domain, $token = null)
    {
        $result = $this->checkConnectivity();
        if ($result !== true) {
            return $result;
        }

if ($token) {
            $this->getIO()->setAuthentication($domain, $token, 'x-oauth-basic');
        }

$url = $domain === 'github.com' ? 'https://api.'.$domain.'/rate_limit' : 'https://'.$domain.'/api/rate_limit';
        $data = $this->httpDownloader->get($url, array('retry-auth-failure' => false))->decodeJson();

return $data['resources']['core'];
    }

/**
     * @return string|true
     */
    private function checkDiskSpace(Config $config)
    {
        $minSpaceFree = 1024 * 1024;
        if ((($df = @disk_free_space($dir = $config->get('home'))) !== false && $df < $minSpaceFree)
            || (($df = @disk_free_space($dir = $config->get('vendor-dir'))) !== false && $df < $minSpaceFree)
        ) {
            return '<error>The disk hosting '.$dir.' is full</error>';
        }

return true;
    }

/**
     * @return string[]|true
     */
    private function checkPubKeys(Config $config)
    {
        $home = $config->get('home');
        $errors = array();
        $io = $this->getIO();

if (file_exists($home.'/keys.tags.pub') && file_exists($home.'/keys.dev.pub')) {
            $io->write('');
        }

if (file_exists($home.'/keys.tags.pub')) {
            $io->write('Tags Public Key Fingerprint: ' . Keys::fingerprint($home.'/keys.tags.pub'));
        } else {
            $errors[] = '<error>Missing pubkey for tags verification</error>';
        }

if (file_exists($home.'/keys.dev.pub')) {
            $io->write('Dev Public Key Fingerprint: ' . Keys::fingerprint($home.'/keys.dev.pub'));
        } else {
            $errors[] = '<error>Missing pubkey for dev verification</error>';
        }

if ($errors) {
            $errors[] = '<error>Run composer self-update --update-keys to set them up</error>';
        }

return $errors ?: true;
    }

/**
     * @return string|\Exception|true
     */
    private function checkVersion(Config $config)
    {
        $result = $this->checkConnectivity();
        if ($result !== true) {
            return $result;
        }

$versionsUtil = new Versions($config, $this->httpDownloader);
        try {
            $latest = $versionsUtil->getLatest();
        } catch (\Exception $e) {
            return $e;
        }

if (Composer::VERSION !== $latest['version'] && Composer::VERSION !== '@package_version@') {
            return '<comment>You are not running the latest '.$versionsUtil->getChannel().' version, run `composer self-update` to update ('.Composer::VERSION.' => '.$latest['version'].')</comment>';
        }

return true;
    }

/**
     * @return string
     */
    private function getCurlVersion()
    {
        if (extension_loaded('curl')) {
            if (!HttpDownloader::isCurlEnabled()) {
                return '<error>disabled via disable_functions, using php streams fallback, which reduces performance</error>';
            }

$version = curl_version();

return '<comment>'.$version['version'].'</comment> '.
                'libz <comment>'.(!empty($version['libz_version']) ? $version['libz_version'] : 'missing').'</comment> '.
                'ssl <comment>'.(isset($version['ssl_version']) ? $version['ssl_version'] : 'missing').'</comment>';
        }

return '<error>missing, using php streams fallback, which reduces performance</error>';
    }

/**
     * @param bool|string|string[]|\Exception $result
     *
     * @return void
     */
    private function outputResult($result)
    {
        $io = $this->getIO();
        if (true === $result) {
            $io->write('<info>OK</info>');

return;
        }

$hadError = false;
        $hadWarning = false;
        if ($result instanceof \Exception) {
            $result = '<error>['.get_class($result).'] '.$result->getMessage().'</error>';
        }

if (!$result) {
            // falsey results should be considered as an error, even if there is nothing to output
            $hadError = true;
        } else {
            if (!is_array($result)) {
                $result = array($result);
            }
            foreach ($result as $message) {
                if (false !== strpos($message, '<error>')) {
                    $hadError = true;
                } elseif (false !== strpos($message, '<warning>')) {
                    $hadWarning = true;
                }
            }
        }

if ($hadError) {
            $io->write('<error>FAIL</error>');
            $this->exitCode = max($this->exitCode, 2);
        } elseif ($hadWarning) {
            $io->write('<warning>WARNING</warning>');
            $this->exitCode = max($this->exitCode, 1);
        }

if ($result) {
            foreach ($result as $message) {
                $io->write($message);
            }
        }
    }

/**
     * @return string|true
     */
    private function checkPlatform()
    {
        $output = '';
        $out = function ($msg, $style) use (&$output) {
            $output .= '<'.$style.'>'.$msg.'</'.$style.'>'.PHP_EOL;
        };

// code below taken from getcomposer.org/installer, any changes should be made there and replicated here
        $errors = array();
        $warnings = array();
        $displayIniMessage = false;

$iniMessage = PHP_EOL.PHP_EOL.IniHelper::getMessage();
        $iniMessage .= PHP_EOL.'If you can not modify the ini file, you can also run `php -d option=value` to modify ini values on the fly. You can use -d multiple times.';

if (!function_exists('json_decode')) {
            $errors['json'] = true;
        }

if (!extension_loaded('Phar')) {
            $errors['phar'] = true;
        }

if (!extension_loaded('filter')) {
            $errors['filter'] = true;
        }

if (!extension_loaded('hash')) {
            $errors['hash'] = true;
        }

if (!extension_loaded('iconv') && !extension_loaded('mbstring')) {
            $errors['iconv_mbstring'] = true;
        }

if (!filter_var(ini_get('allow_url_fopen'), FILTER_VALIDATE_BOOLEAN)) {
            $errors['allow_url_fopen'] = true;
        }

if (extension_loaded('ionCube Loader') && ioncube_loader_iversion() < 40009) {
            $errors['ioncube'] = ioncube_loader_version();
        }

if (PHP_VERSION_ID < 50302) {
            $errors['php'] = PHP_VERSION;
        }

if (!isset($errors['php']) && PHP_VERSION_ID < 50304) {
            $warnings['php'] = PHP_VERSION;
        }

if (!extension_loaded('openssl')) {
            $errors['openssl'] = true;
        }

if (extension_loaded('openssl') && OPENSSL_VERSION_NUMBER < 0x1000100f) {
            $warnings['openssl_version'] = true;
        }

if (!defined('HHVM_VERSION') && !extension_loaded('apcu') && filter_var(ini_get('apc.enable_cli'), FILTER_VALIDATE_BOOLEAN)) {
            $warnings['apc_cli'] = true;
        }

if (!extension_loaded('zlib')) {
            $warnings['zlib'] = true;
        }

ob_start();
        phpinfo(INFO_GENERAL);
        $phpinfo = ob_get_clean();
        if (Preg::isMatch('{Configure Command(?: *</td><td class="v">| *=> *)(.*?)(?:</td>|$)}m', $phpinfo, $match)) {
            $configure = $match[1];

if (false !== strpos($configure, '--enable-sigchild')) {
                $warnings['sigchild'] = true;
            }

if (false !== strpos($configure, '--with-curlwrappers')) {
                $warnings['curlwrappers'] = true;
            }
        }

if (filter_var(ini_get('xdebug.profiler_enabled'), FILTER_VALIDATE_BOOLEAN)) {
            $warnings['xdebug_profile'] = true;
        } elseif (XdebugHandler::isXdebugActive()) {
            $warnings['xdebug_loaded'] = true;
        }

if (defined('PHP_WINDOWS_VERSION_BUILD')
            && (version_compare(PHP_VERSION, '7.2.23', '<')
            || (version_compare(PHP_VERSION, '7.3.0', '>=')
            && version_compare(PHP_VERSION, '7.3.10', '<')))) {
            $warnings['onedrive'] = PHP_VERSION;
        }

if (!empty($errors)) {
            foreach ($errors as $error => $current) {
                switch ($error) {
                    case 'json':
                        $text = PHP_EOL."The json extension is missing.".PHP_EOL;
                        $text .= "Install it or recompile php without --disable-json";
                        break;

case 'phar':
                        $text = PHP_EOL."The phar extension is missing.".PHP_EOL;
                        $text .= "Install it or recompile php without --disable-phar";
                        break;

case 'filter':
                        $text = PHP_EOL."The filter extension is missing.".PHP_EOL;
                        $text .= "Install it or recompile php without --disable-filter";
                        break;

case 'hash':
                        $text = PHP_EOL."The hash extension is missing.".PHP_EOL;
                        $text .= "Install it or recompile php without --disable-hash";
                        break;

case 'iconv_mbstring':
                        $text = PHP_EOL."The iconv OR mbstring extension is required and both are missing.".PHP_EOL;
                        $text .= "Install either of them or recompile php without --disable-iconv";
                        break;

case 'php':
                        $text = PHP_EOL."Your PHP ({$current}) is too old, you must upgrade to PHP 5.3.2 or higher.";
                        break;

case 'allow_url_fopen':
                        $text = PHP_EOL."The allow_url_fopen setting is incorrect.".PHP_EOL;
                        $text .= "Add the following to the end of your `php.ini`:".PHP_EOL;
                        $text .= "    allow_url_fopen = On";
                        $displayIniMessage = true;
                        break;

case 'ioncube':
                        $text = PHP_EOL."Your ionCube Loader extension ($current) is incompatible with Phar files.".PHP_EOL;
                        $text .= "Upgrade to ionCube 4.0.9 or higher or remove this line (path may be different) from your `php.ini` to disable it:".PHP_EOL;
                        $text .= "    zend_extension = /usr/lib/php5/20090626+lfs/ioncube_loader_lin_5.3.so";
                        $displayIniMessage = true;
                        break;

case 'openssl':
                        $text = PHP_EOL."The openssl extension is missing, which means that secure HTTPS transfers are impossible.".PHP_EOL;
                        $text .= "If possible you should enable it or recompile php with --with-openssl";
                        break;

default:
                        throw new \InvalidArgumentException(sprintf("DiagnoseCommand: Unknown error type \"%s\". Please report at https://github.com/composer/composer/issues/new.", $error));
                }
                $out($text, 'error');
            }

$output .= PHP_EOL;
        }

if (!empty($warnings)) {
            foreach ($warnings as $warning => $current) {
                switch ($warning) {
                    case 'apc_cli':
                        $text = "The apc.enable_cli setting is incorrect.".PHP_EOL;
                        $text .= "Add the following to the end of your `php.ini`:".PHP_EOL;
                        $text .= "  apc.enable_cli = Off";
                        $displayIniMessage = true;
                        break;

case 'zlib':
                        $text = 'The zlib extension is not loaded, this can slow down Composer a lot.'.PHP_EOL;
                        $text .= 'If possible, enable it or recompile php with --with-zlib'.PHP_EOL;
                        $displayIniMessage = true;
                        break;

case 'sigchild':
                        $text = "PHP was compiled with --enable-sigchild which can cause issues on some platforms.".PHP_EOL;
                        $text .= "Recompile it without this flag if possible, see also:".PHP_EOL;
                        $text .= "  https://bugs.php.net/bug.php?id=22999";
                        break;

case 'curlwrappers':
                        $text = "PHP was compiled with --with-curlwrappers which will cause issues with HTTP authentication and GitHub.".PHP_EOL;
                        $text .= " Recompile it without this flag if possible";
                        break;

case 'php':
                        $text = "Your PHP ({$current}) is quite old, upgrading to PHP 5.3.4 or higher is recommended.".PHP_EOL;
                        $text .= " Composer works with 5.3.2+ for most people, but there might be edge case issues.";
                        break;

case 'openssl_version':
                        // Attempt to parse version number out, fallback to whole string value.
                        $opensslVersion = strstr(trim(strstr(OPENSSL_VERSION_TEXT, ' ')), ' ', true);
                        $opensslVersion = $opensslVersion ?: OPENSSL_VERSION_TEXT;

$text = "The OpenSSL library ({$opensslVersion}) used by PHP does not support TLSv1.2 or TLSv1.1.".PHP_EOL;
                        $text .= "If possible you should upgrade OpenSSL to version 1.0.1 or above.";
                        break;

case 'xdebug_loaded':
                        $text = "The xdebug extension is loaded, this can slow down Composer a little.".PHP_EOL;
                        $text .= " Disabling it when using Composer is recommended.";
                        break;

case 'xdebug_profile':
                        $text = "The xdebug.profiler_enabled setting is enabled, this can slow down Composer a lot.".PHP_EOL;
                        $text .= "Add the following to the end of your `php.ini` to disable it:".PHP_EOL;
                        $text .= "  xdebug.profiler_enabled = 0";
                        $displayIniMessage = true;
                        break;

case 'onedrive':
                        $text = "The Windows OneDrive folder is not supported on PHP versions below 7.2.23 and 7.3.10.".PHP_EOL;
                        $text .= "Upgrade your PHP ({$current}) to use this location with Composer.".PHP_EOL;
                        break;

default:
                        throw new \InvalidArgumentException(sprintf("DiagnoseCommand: Unknown warning type \"%s\". Please report at https://github.com/composer/composer/issues/new.", $warning));
                }
                $out($text, 'comment');
            }
        }

if ($displayIniMessage) {
            $out($iniMessage, 'comment');
        }

return !$warnings && !$errors ? true : $output;
    }

/**
     * Check if allow_url_fopen is ON
     *
     * @return string|true
     */
    private function checkConnectivity()
    {
        if (!ini_get('allow_url_fopen')) {
            return '<info>Skipped because allow_url_fopen is missing.</info>';
        }

return true;
    }
}
<?php

namespace Composer\Command;

/**
 * @author Niels Keurentjes <niels.keurentjes@omines.com>
 */
class ProhibitsCommand extends BaseDependencyCommand
{
    /**
     * Configure command metadata.
     *
     * @return void
     */
    protected function configure()
    {
        $this
            ->setName('prohibits')
            ->setAliases(array('why-not'))
            ->setDescription('Shows which packages prevent the given package from being installed.')
            ->setDefinition(array(
                new InputArgument(self::ARGUMENT_PACKAGE, InputArgument::REQUIRED, 'Package to inspect'),
                new InputArgument(self::ARGUMENT_CONSTRAINT, InputArgument::REQUIRED, 'Version constraint, which version you expected to be installed'),
                new InputOption(self::OPTION_RECURSIVE, 'r', InputOption::VALUE_NONE, 'Recursively resolves up to the root package'),
                new InputOption(self::OPTION_TREE, 't', InputOption::VALUE_NONE, 'Prints the results as a nested tree'),
            ))
            ->setHelp(
                <<<EOT
Displays detailed information about why a package cannot be installed.

<info>php composer.phar prohibits composer/composer</info>

Read more at https://getcomposer.org/doc/03-cli.md#prohibits-why-not-
EOT
            )
        ;
    }

/**
     * Execute the function.
     *
     * @return int
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        return parent::doExecute($input, $output, true);
    }
}
<?php

namespace Composer\Command;

use Composer\Factory;
use Composer\Json\JsonFile;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;
use Composer\Repository\CompositeRepository;
use Composer\Repository\PlatformRepository;
use Composer\Repository\RepositoryInterface;
use Composer\Plugin\CommandEvent;
use Composer\Plugin\PluginEvents;

/**
 * @author Robert Schönthal <seroscho@googlemail.com>
 */
class SearchCommand extends BaseCommand
{
    /**
     * @return void
     */
    protected function configure()
    {
        $this
            ->setName('search')
            ->setDescription('Searches for packages.')
            ->setDefinition(array(
                new InputOption('only-name', 'N', InputOption::VALUE_NONE, 'Search only in package names'),
                new InputOption('only-vendor', 'O', InputOption::VALUE_NONE, 'Search only for vendor / organization names, returns only "vendor" as result'),
                new InputOption('type', 't', InputOption::VALUE_REQUIRED, 'Search for a specific package type'),
                new InputOption('format', 'f', InputOption::VALUE_REQUIRED, 'Format of the output: text or json', 'text'),
                new InputArgument('tokens', InputArgument::IS_ARRAY | InputArgument::REQUIRED, 'tokens to search for'),
            ))
            ->setHelp(
                <<<EOT
The search command searches for packages by its name
<info>php composer.phar search symfony composer</info>

Read more at https://getcomposer.org/doc/03-cli.md#search
EOT
            )
        ;
    }

protected function execute(InputInterface $input, OutputInterface $output)
    {
        // init repos
        $platformRepo = new PlatformRepository;
        $io = $this->getIO();

$format = $input->getOption('format');
        if (!in_array($format, array('text', 'json'))) {
            $io->writeError(sprintf('Unsupported format "%s". See help for supported formats.', $format));

return 1;
        }

if (!($composer = $this->getComposer(false))) {
            $composer = Factory::create($this->getIO(), array(), $input->hasParameterOption('--no-plugins'));
        }
        $localRepo = $composer->getRepositoryManager()->getLocalRepository();
        $installedRepo = new CompositeRepository(array($localRepo, $platformRepo));
        $repos = new CompositeRepository(array_merge(array($installedRepo), $composer->getRepositoryManager()->getRepositories()));

$commandEvent = new CommandEvent(PluginEvents::COMMAND, 'search', $input, $output);
        $composer->getEventDispatcher()->dispatch($commandEvent->getName(), $commandEvent);

$mode = RepositoryInterface::SEARCH_FULLTEXT;
        if ($input->getOption('only-name') === true) {
            if ($input->getOption('only-vendor') === true) {
                throw new \InvalidArgumentException('--only-name and --only-vendor cannot be used together');
            }
            $mode = RepositoryInterface::SEARCH_NAME;
        } elseif ($input->getOption('only-vendor') === true) {
            $mode = RepositoryInterface::SEARCH_VENDOR;
        }

$type = $input->getOption('type');

$query = implode(' ', $input->getArgument('tokens'));
        if ($mode !== RepositoryInterface::SEARCH_FULLTEXT) {
            $query = preg_quote($query);
        }

$results = $repos->search($query, $mode, $type);

if ($results && $format === 'text') {
            $width = $this->getTerminalWidth();

$nameLength = 0;
            foreach ($results as $result) {
                $nameLength = max(strlen($result['name']), $nameLength);
            }
            $nameLength += 1;
            foreach ($results as $result) {
                $description = isset($result['description']) ? $result['description'] : '';
                $warning = !empty($result['abandoned']) ? '<warning>! Abandoned !</warning> ' : '';
                $remaining = $width - $nameLength - strlen($warning) - 2;
                if (strlen($description) > $remaining) {
                    $description = substr($description, 0, $remaining - 3) . '...';
                }

$io->write(str_pad($result['name'], $nameLength, ' ') . $warning . $description);
            }
        } elseif ($format === 'json') {
            $io->write(JsonFile::encode($results));
        }

return 0;
    }
}
<?php

namespace Composer\Command;

use Composer\Pcre\Preg;
use Composer\Util\Filesystem;
use Composer\Util\Platform;
use Composer\Util\Silencer;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;
use Composer\Config;
use Composer\Config\JsonConfigSource;
use Composer\Factory;
use Composer\IO\IOInterface;
use Composer\Json\JsonFile;
use Composer\Semver\VersionParser;
use Composer\Package\BasePackage;

/**
 * @author Joshua Estes <Joshua.Estes@iostudio.com>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class ConfigCommand extends BaseCommand
{
    /**
     * @var Config
     */
    protected $config;

/**
     * @var JsonFile
     */
    protected $configFile;

/**
     * @var JsonConfigSource
     */
    protected $configSource;

/**
     * @var JsonFile
     */
    protected $authConfigFile;

/**
     * @var JsonConfigSource
     */
    protected $authConfigSource;

/**
     * @return void
     */
    protected function configure()
    {
        $this
            ->setName('config')
            ->setDescription('Sets config options.')
            ->setDefinition(array(
                new InputOption('global', 'g', InputOption::VALUE_NONE, 'Apply command to the global config file'),
                new InputOption('editor', 'e', InputOption::VALUE_NONE, 'Open editor'),
                new InputOption('auth', 'a', InputOption::VALUE_NONE, 'Affect auth config file (only used for --editor)'),
                new InputOption('unset', null, InputOption::VALUE_NONE, 'Unset the given setting-key'),
                new InputOption('list', 'l', InputOption::VALUE_NONE, 'List configuration settings'),
                new InputOption('file', 'f', InputOption::VALUE_REQUIRED, 'If you want to choose a different composer.json or config.json'),
                new InputOption('absolute', null, InputOption::VALUE_NONE, 'Returns absolute paths when fetching *-dir config values instead of relative'),
                new InputOption('json', 'j', InputOption::VALUE_NONE, 'JSON decode the setting value, to be used with extra.* keys'),
                new InputOption('merge', 'm', InputOption::VALUE_NONE, 'Merge the setting value with the current value, to be used with extra.* keys in combination with --json'),
                new InputOption('append', null, InputOption::VALUE_NONE, 'When adding a repository, append it (lowest priority) to the existing ones instead of prepending it (highest priority)'),
                new InputOption('source', null, InputOption::VALUE_NONE, 'Display where the config value is loaded from'),
                new InputArgument('setting-key', null, 'Setting key'),
                new InputArgument('setting-value', InputArgument::IS_ARRAY, 'Setting value'),
            ))
            ->setHelp(
                <<<EOT
This command allows you to edit composer config settings and repositories
in either the local composer.json file or the global config.json file.

Additionally it lets you edit most properties in the local composer.json.

To set a config setting:

<comment>%command.full_name% bin-dir bin/</comment>

To read a config setting:

<comment>%command.full_name% bin-dir</comment>
    Outputs: <info>bin</info>

To edit the global config.json file:

<comment>%command.full_name% --global</comment>

To add a repository:

<comment>%command.full_name% repositories.foo vcs https://bar.com</comment>

To remove a repository (repo is a short alias for repositories):

<comment>%command.full_name% --unset repo.foo</comment>

To disable packagist:

<comment>%command.full_name% repo.packagist false</comment>

You can alter repositories in the global config.json file by passing in the
<info>--global</info> option.

To add or edit suggested packages you can use:

<comment>%command.full_name% suggest.package reason for the suggestion</comment>

To add or edit extra properties you can use:

<comment>%command.full_name% extra.property value</comment>

Or to add a complex value you can use json with:

<comment>%command.full_name% extra.property --json '{"foo":true, "bar": []}'</comment>

To edit the file in an external editor:

<comment>%command.full_name% --editor</comment>

To choose your editor you can set the "EDITOR" env variable.

To get a list of configuration values in the file:

<comment>%command.full_name% --list</comment>

You can always pass more than one option. As an example, if you want to edit the
global config.json file.

<comment>%command.full_name% --editor --global</comment>

Read more at https://getcomposer.org/doc/03-cli.md#config
EOT
            )
        ;
    }

/**
     * @return void
     * @throws \Exception
     */
    protected function initialize(InputInterface $input, OutputInterface $output)
    {
        parent::initialize($input, $output);

if ($input->getOption('global') && null !== $input->getOption('file')) {
            throw new \RuntimeException('--file and --global can not be combined');
        }

$io = $this->getIO();
        $this->config = Factory::createConfig($io);

// Get the local composer.json, global config.json, or if the user
        // passed in a file to use
        $configFile = $input->getOption('global')
            ? ($this->config->get('home') . '/config.json')
            : ($input->getOption('file') ?: Factory::getComposerFile());

// Create global composer.json if this was invoked using `composer global config`
        if (
            ($configFile === 'composer.json' || $configFile === './composer.json')
            && !file_exists($configFile)
            && realpath(getcwd()) === realpath($this->config->get('home'))
        ) {
            file_put_contents($configFile, "{\n}\n");
        }

$this->configFile = new JsonFile($configFile, null, $io);
        $this->configSource = new JsonConfigSource($this->configFile);

$authConfigFile = $input->getOption('global')
            ? ($this->config->get('home') . '/auth.json')
            : dirname(realpath($configFile)) . '/auth.json';

$this->authConfigFile = new JsonFile($authConfigFile, null, $io);
        $this->authConfigSource = new JsonConfigSource($this->authConfigFile, true);

// Initialize the global file if it's not there, ignoring any warnings or notices
        if ($input->getOption('global') && !$this->configFile->exists()) {
            touch($this->configFile->getPath());
            $this->configFile->write(array('config' => new \ArrayObject));
            Silencer::call('chmod', $this->configFile->getPath(), 0600);
        }
        if ($input->getOption('global') && !$this->authConfigFile->exists()) {
            touch($this->authConfigFile->getPath());
            $this->authConfigFile->write(array('bitbucket-oauth' => new \ArrayObject, 'github-oauth' => new \ArrayObject, 'gitlab-oauth' => new \ArrayObject, 'gitlab-token' => new \ArrayObject, 'http-basic' => new \ArrayObject, 'bearer' => new \ArrayObject));
            Silencer::call('chmod', $this->authConfigFile->getPath(), 0600);
        }

if (!$this->configFile->exists()) {
            throw new \RuntimeException(sprintf('File "%s" cannot be found in the current directory', $configFile));
        }
    }

/**
     * @return int
     * @throws \Seld\JsonLint\ParsingException
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        // Open file in editor
        if (true === $input->getOption('editor')) {
            $editor = escapeshellcmd(Platform::getEnv('EDITOR'));
            if (!$editor) {
                if (Platform::isWindows()) {
                    $editor = 'notepad';
                } else {
                    foreach (array('editor', 'vim', 'vi', 'nano', 'pico', 'ed') as $candidate) {
                        if (exec('which '.$candidate)) {
                            $editor = $candidate;
                            break;
                        }
                    }
                }
            }

$file = $input->getOption('auth') ? $this->authConfigFile->getPath() : $this->configFile->getPath();
            system($editor . ' ' . $file . (Platform::isWindows() ? '' : ' > `tty`'));

return 0;
        }

if (false === $input->getOption('global')) {
            $this->config->merge($this->configFile->read(), $this->configFile->getPath());
            $this->config->merge(array('config' => $this->authConfigFile->exists() ? $this->authConfigFile->read() : array()), $this->authConfigFile->getPath());
        }

// List the configuration of the file settings
        if (true === $input->getOption('list')) {
            $this->listConfiguration($this->config->all(), $this->config->raw(), $output, null, (bool) $input->getOption('source'));

return 0;
        }

$settingKey = $input->getArgument('setting-key');
        if (!is_string($settingKey)) {
            return 0;
        }

// If the user enters in a config variable, parse it and save to file
        if (array() !== $input->getArgument('setting-value') && $input->getOption('unset')) {
            throw new \RuntimeException('You can not combine a setting value with --unset');
        }

// show the value if no value is provided
        if (array() === $input->getArgument('setting-value') && !$input->getOption('unset')) {
            $properties = array('name', 'type', 'description', 'homepage', 'version', 'minimum-stability', 'prefer-stable', 'keywords', 'license', 'extra');
            $rawData = $this->configFile->read();
            $data = $this->config->all();
            if (Preg::isMatch('/^repos?(?:itories)?(?:\.(.+))?/', $settingKey, $matches)) {
                if (!isset($matches[1]) || $matches[1] === '') {
                    $value = isset($data['repositories']) ? $data['repositories'] : array();
                } else {
                    if (!isset($data['repositories'][$matches[1]])) {
                        throw new \InvalidArgumentException('There is no '.$matches[1].' repository defined');
                    }

$value = $data['repositories'][$matches[1]];
                }
            } elseif (strpos($settingKey, '.')) {
                $bits = explode('.', $settingKey);
                if ($bits[0] === 'extra') {
                    $data = $rawData;
                } else {
                    $data = $data['config'];
                }
                $match = false;
                foreach ($bits as $bit) {
                    $key = isset($key) ? $key.'.'.$bit : $bit;
                    $match = false;
                    if (isset($data[$key])) {
                        $match = true;
                        $data = $data[$key];
                        unset($key);
                    }
                }

if (!$match) {
                    throw new \RuntimeException($settingKey.' is not defined.');
                }

$value = $data;
            } elseif (isset($data['config'][$settingKey])) {
                $value = $this->config->get($settingKey, $input->getOption('absolute') ? 0 : Config::RELATIVE_PATHS);
            } elseif (isset($rawData[$settingKey]) && in_array($settingKey, $properties, true)) {
                $value = $rawData[$settingKey];
            } else {
                throw new \RuntimeException($settingKey.' is not defined');
            }

if (is_array($value)) {
                $value = json_encode($value);
            }

$sourceOfConfigValue = '';
            if ($input->getOption('source')) {
                $sourceOfConfigValue = ' (' . $this->config->getSourceOfValue($settingKey) . ')';
            }

$this->getIO()->write($value . $sourceOfConfigValue, true, IOInterface::QUIET);

return 0;
        }

$values = $input->getArgument('setting-value'); // what the user is trying to add/change

$booleanValidator = function ($val) {
            return in_array($val, array('true', 'false', '1', '0'), true);
        };
        $booleanNormalizer = function ($val) {
            return $val !== 'false' && (bool) $val;
        };

// handle config values
        $uniqueConfigValues = array(
            'process-timeout' => array('is_numeric', 'intval'),
            'use-include-path' => array($booleanValidator, $booleanNormalizer),
            'use-github-api' => array($booleanValidator, $booleanNormalizer),
            'preferred-install' => array(
                function ($val) {
                    return in_array($val, array('auto', 'source', 'dist'), true);
                },
                function ($val) {
                    return $val;
                },
            ),
            'gitlab-protocol' => array(
                function ($val) {
                    return in_array($val, array('git', 'http', 'https'), true);
                },
                function ($val) {
                    return $val;
                },
            ),
            'store-auths' => array(
                function ($val) {
                    return in_array($val, array('true', 'false', 'prompt'), true);
                },
                function ($val) {
                    if ('prompt' === $val) {
                        return 'prompt';
                    }

return $val !== 'false' && (bool) $val;
                },
            ),
            'notify-on-install' => array($booleanValidator, $booleanNormalizer),
            'vendor-dir' => array('is_string', function ($val) {
                return $val;
            }),
            'bin-dir' => array('is_string', function ($val) {
                return $val;
            }),
            'archive-dir' => array('is_string', function ($val) {
                return $val;
            }),
            'archive-format' => array('is_string', function ($val) {
                return $val;
            }),
            'data-dir' => array('is_string', function ($val) {
                return $val;
            }),
            'cache-dir' => array('is_string', function ($val) {
                return $val;
            }),
            'cache-files-dir' => array('is_string', function ($val) {
                return $val;
            }),
            'cache-repo-dir' => array('is_string', function ($val) {
                return $val;
            }),
            'cache-vcs-dir' => array('is_string', function ($val) {
                return $val;
            }),
            'cache-ttl' => array('is_numeric', 'intval'),
            'cache-files-ttl' => array('is_numeric', 'intval'),
            'cache-files-maxsize' => array(
                function ($val) {
                    return Preg::isMatch('/^\s*([0-9.]+)\s*(?:([kmg])(?:i?b)?)?\s*$/i', $val);
                },
                function ($val) {
                    return $val;
                },
            ),
            'bin-compat' => array(
                function ($val) {
                    return in_array($val, array('auto', 'full', 'symlink'));
                },
                function ($val) {
                    return $val;
                },
            ),
            'discard-changes' => array(
                function ($val) {
                    return in_array($val, array('stash', 'true', 'false', '1', '0'), true);
                },
                function ($val) {
                    if ('stash' === $val) {
                        return 'stash';
                    }

return $val !== 'false' && (bool) $val;
                },
            ),
            'autoloader-suffix' => array('is_string', function ($val) {
                return $val === 'null' ? null : $val;
            }),
            'sort-packages' => array($booleanValidator, $booleanNormalizer),
            'optimize-autoloader' => array($booleanValidator, $booleanNormalizer),
            'classmap-authoritative' => array($booleanValidator, $booleanNormalizer),
            'apcu-autoloader' => array($booleanValidator, $booleanNormalizer),
            'prepend-autoloader' => array($booleanValidator, $booleanNormalizer),
            'disable-tls' => array($booleanValidator, $booleanNormalizer),
            'secure-http' => array($booleanValidator, $booleanNormalizer),
            'cafile' => array(
                function ($val) {
                    return file_exists($val) && Filesystem::isReadable($val);
                },
                function ($val) {
                    return $val === 'null' ? null : $val;
                },
            ),
            'capath' => array(
                function ($val) {
                    return is_dir($val) && Filesystem::isReadable($val);
                },
                function ($val) {
                    return $val === 'null' ? null : $val;
                },
            ),
            'github-expose-hostname' => array($booleanValidator, $booleanNormalizer),
            'htaccess-protect' => array($booleanValidator, $booleanNormalizer),
            'lock' => array($booleanValidator, $booleanNormalizer),
            'allow-plugins' => array($booleanValidator, $booleanNormalizer),
            'platform-check' => array(
                function ($val) {
                    return in_array($val, array('php-only', 'true', 'false', '1', '0'), true);
                },
                function ($val) {
                    if ('php-only' === $val) {
                        return 'php-only';
                    }

return $val !== 'false' && (bool)$val;
                },
            ),
            'use-parent-dir' => array(
                function ($val) {
                    return in_array($val, array('true', 'false', 'prompt'), true);
                },
                function ($val) {
                    if ('prompt' === $val) {
                        return 'prompt';
                    }

return $val !== 'false' && (bool) $val;
                },
            ),
        );
        $multiConfigValues = array(
            'github-protocols' => array(
                function ($vals) {
                    if (!is_array($vals)) {
                        return 'array expected';
                    }

foreach ($vals as $val) {
                        if (!in_array($val, array('git', 'https', 'ssh'))) {
                            return 'valid protocols include: git, https, ssh';
                        }
                    }

return true;
                },
                function ($vals) {
                    return $vals;
                },
            ),
            'github-domains' => array(
                function ($vals) {
                    if (!is_array($vals)) {
                        return 'array expected';
                    }

return true;
                },
                function ($vals) {
                    return $vals;
                },
            ),
            'gitlab-domains' => array(
                function ($vals) {
                    if (!is_array($vals)) {
                        return 'array expected';
                    }

return true;
                },
                function ($vals) {
                    return $vals;
                },
            ),
        );

if ($input->getOption('unset') && (isset($uniqueConfigValues[$settingKey]) || isset($multiConfigValues[$settingKey]))) {
            if ($settingKey === 'disable-tls' && $this->config->get('disable-tls')) {
                $this->getIO()->writeError('<info>You are now running Composer with SSL/TLS protection enabled.</info>');
            }

$this->configSource->removeConfigSetting($settingKey);

return 0;
        }
        if (isset($uniqueConfigValues[$settingKey])) {
            $this->handleSingleValue($settingKey, $uniqueConfigValues[$settingKey], $values, 'addConfigSetting');

return 0;
        }
        if (isset($multiConfigValues[$settingKey])) {
            $this->handleMultiValue($settingKey, $multiConfigValues[$settingKey], $values, 'addConfigSetting');

return 0;
        }
        // handle preferred-install per-package config
        if (Preg::isMatch('/^preferred-install\.(.+)/', $settingKey, $matches)) {
            if ($input->getOption('unset')) {
                $this->configSource->removeConfigSetting($settingKey);

return 0;
            }

list($validator) = $uniqueConfigValues['preferred-install'];
            if (!$validator($values[0])) {
                throw new \RuntimeException('Invalid value for '.$settingKey.'. Should be one of: auto, source, or dist');
            }

$this->configSource->addConfigSetting($settingKey, $values[0]);

return 0;
        }

// handle allow-plugins config setting elements true or false to add/remove
        if (Preg::isMatch('{^allow-plugins\.([a-zA-Z0-9/*-]+)}', $settingKey, $matches)) {
            if ($input->getOption('unset')) {
                $this->configSource->removeConfigSetting($settingKey);

return 0;
            }

if (true !== $booleanValidator($values[0])) {
                throw new \RuntimeException(sprintf(
                    '"%s" is an invalid value',
                    $values[0]
                ));
            }

$normalizedValue = $booleanNormalizer($values[0]);

$this->configSource->addConfigSetting($settingKey, $normalizedValue);

return 0;
        }

// handle properties
        $uniqueProps = array(
            'name' => array('is_string', function ($val) {
                return $val;
            }),
            'type' => array('is_string', function ($val) {
                return $val;
            }),
            'description' => array('is_string', function ($val) {
                return $val;
            }),
            'homepage' => array('is_string', function ($val) {
                return $val;
            }),
            'version' => array('is_string', function ($val) {
                return $val;
            }),
            'minimum-stability' => array(
                function ($val) {
                    return isset(BasePackage::$stabilities[VersionParser::normalizeStability($val)]);
                },
                function ($val) {
                    return VersionParser::normalizeStability($val);
                },
            ),
            'prefer-stable' => array($booleanValidator, $booleanNormalizer),
        );
        $multiProps = array(
            'keywords' => array(
                function ($vals) {
                    if (!is_array($vals)) {
                        return 'array expected';
                    }

return true;
                },
                function ($vals) {
                    return $vals;
                },
            ),
            'license' => array(
                function ($vals) {
                    if (!is_array($vals)) {
                        return 'array expected';
                    }

return true;
                },
                function ($vals) {
                    return $vals;
                },
            ),
        );

if ($input->getOption('global') && (isset($uniqueProps[$settingKey]) || isset($multiProps[$settingKey]) || strpos($settingKey, 'extra.') === 0)) {
            throw new \InvalidArgumentException('The ' . $settingKey . ' property can not be set in the global config.json file. Use `composer global config` to apply changes to the global composer.json');
        }
        if ($input->getOption('unset') && (isset($uniqueProps[$settingKey]) || isset($multiProps[$settingKey]))) {
            $this->configSource->removeProperty($settingKey);

return 0;
        }
        if (isset($uniqueProps[$settingKey])) {
            $this->handleSingleValue($settingKey, $uniqueProps[$settingKey], $values, 'addProperty');

return 0;
        }
        if (isset($multiProps[$settingKey])) {
            $this->handleMultiValue($settingKey, $multiProps[$settingKey], $values, 'addProperty');

return 0;
        }

// handle repositories
        if (Preg::isMatch('/^repos?(?:itories)?\.(.+)/', $settingKey, $matches)) {
            if ($input->getOption('unset')) {
                $this->configSource->removeRepository($matches[1]);

return 0;
            }

if (2 === count($values)) {
                $this->configSource->addRepository($matches[1], array(
                    'type' => $values[0],
                    'url' => $values[1],
                ), $input->getOption('append'));

return 0;
            }

if (1 === count($values)) {
                $value = strtolower($values[0]);
                if (true === $booleanValidator($value)) {
                    if (false === $booleanNormalizer($value)) {
                        $this->configSource->addRepository($matches[1], false, $input->getOption('append'));

return 0;
                    }
                } else {
                    $value = JsonFile::parseJson($values[0]);
                    $this->configSource->addRepository($matches[1], $value, $input->getOption('append'));

return 0;
                }
            }

throw new \RuntimeException('You must pass the type and a url. Example: php composer.phar config repositories.foo vcs https://bar.com');
        }

// handle extra
        if (Preg::isMatch('/^extra\.(.+)/', $settingKey, $matches)) {
            if ($input->getOption('unset')) {
                $this->configSource->removeProperty($settingKey);

return 0;
            }

$value = $values[0];
            if ($input->getOption('json')) {
                $value = JsonFile::parseJson($value);
                if ($input->getOption('merge')) {
                    $currentValue = $this->configFile->read();
                    $bits = explode('.', $settingKey);
                    foreach ($bits as $bit) {
                        $currentValue = isset($currentValue[$bit]) ? $currentValue[$bit] : null;
                    }
                    if (is_array($currentValue)) {
                        $value = array_merge($currentValue, $value);
                    }
                }
            }
            $this->configSource->addProperty($settingKey, $value);

return 0;
        }

// handle suggest
        if (Preg::isMatch('/^suggest\.(.+)/', $settingKey, $matches)) {
            if ($input->getOption('unset')) {
                $this->configSource->removeProperty($settingKey);

return 0;
            }

$this->configSource->addProperty($settingKey, implode(' ', $values));

return 0;
        }

// handle unsetting extra/suggest
        if (in_array($settingKey, array('suggest', 'extra'), true) && $input->getOption('unset')) {
            $this->configSource->removeProperty($settingKey);

return 0;
        }

// handle platform
        if (Preg::isMatch('/^platform\.(.+)/', $settingKey, $matches)) {
            if ($input->getOption('unset')) {
                $this->configSource->removeConfigSetting($settingKey);

return 0;
            }

$this->configSource->addConfigSetting($settingKey, $values[0] === 'false' ?  false : $values[0]);

return 0;
        }

// handle unsetting platform
        if ($settingKey === 'platform' && $input->getOption('unset')) {
            $this->configSource->removeConfigSetting($settingKey);

return 0;
        }

// handle auth
        if (Preg::isMatch('/^(bitbucket-oauth|github-oauth|gitlab-oauth|gitlab-token|http-basic|bearer)\.(.+)/', $settingKey, $matches)) {
            if ($input->getOption('unset')) {
                $this->authConfigSource->removeConfigSetting($matches[1].'.'.$matches[2]);
                $this->configSource->removeConfigSetting($matches[1].'.'.$matches[2]);

return 0;
            }

if ($matches[1] === 'bitbucket-oauth') {
                if (2 !== count($values)) {
                    throw new \RuntimeException('Expected two arguments (consumer-key, consumer-secret), got '.count($values));
                }
                $this->configSource->removeConfigSetting($matches[1].'.'.$matches[2]);
                $this->authConfigSource->addConfigSetting($matches[1].'.'.$matches[2], array('consumer-key' => $values[0], 'consumer-secret' => $values[1]));
            } elseif ($matches[1] === 'gitlab-token' && 2 === count($values)) {
                $this->configSource->removeConfigSetting($matches[1].'.'.$matches[2]);
                $this->authConfigSource->addConfigSetting($matches[1].'.'.$matches[2], array('username' => $values[0], 'token' => $values[1]));
            } elseif (in_array($matches[1], array('github-oauth', 'gitlab-oauth', 'gitlab-token', 'bearer'), true)) {
                if (1 !== count($values)) {
                    throw new \RuntimeException('Too many arguments, expected only one token');
                }
                $this->configSource->removeConfigSetting($matches[1].'.'.$matches[2]);
                $this->authConfigSource->addConfigSetting($matches[1].'.'.$matches[2], $values[0]);
            } elseif ($matches[1] === 'http-basic') {
                if (2 !== count($values)) {
                    throw new \RuntimeException('Expected two arguments (username, password), got '.count($values));
                }
                $this->configSource->removeConfigSetting($matches[1].'.'.$matches[2]);
                $this->authConfigSource->addConfigSetting($matches[1].'.'.$matches[2], array('username' => $values[0], 'password' => $values[1]));
            }

return 0;
        }

// handle script
        if (Preg::isMatch('/^scripts\.(.+)/', $settingKey, $matches)) {
            if ($input->getOption('unset')) {
                $this->configSource->removeProperty($settingKey);

return 0;
            }

$this->configSource->addProperty($settingKey, count($values) > 1 ? $values : $values[0]);

return 0;
        }

throw new \InvalidArgumentException('Setting '.$settingKey.' does not exist or is not supported by this command');
    }

/**
     * @param string $key
     * @param array{callable, callable} $callbacks Validator and normalizer callbacks
     * @param array<string> $values
     * @param string $method
     *
     * @return void
     */
    protected function handleSingleValue($key, array $callbacks, array $values, $method)
    {
        list($validator, $normalizer) = $callbacks;
        if (1 !== count($values)) {
            throw new \RuntimeException('You can only pass one value. Example: php composer.phar config process-timeout 300');
        }

if (true !== $validation = $validator($values[0])) {
            throw new \RuntimeException(sprintf(
                '"%s" is an invalid value'.($validation ? ' ('.$validation.')' : ''),
                $values[0]
            ));
        }

$normalizedValue = $normalizer($values[0]);

if ($key === 'disable-tls') {
            if (!$normalizedValue && $this->config->get('disable-tls')) {
                $this->getIO()->writeError('<info>You are now running Composer with SSL/TLS protection enabled.</info>');
            } elseif ($normalizedValue && !$this->config->get('disable-tls')) {
                $this->getIO()->writeError('<warning>You are now running Composer with SSL/TLS protection disabled.</warning>');
            }
        }

call_user_func(array($this->configSource, $method), $key, $normalizedValue);
    }

/**
     * @param string $key
     * @param array{callable, callable} $callbacks Validator and normalizer callbacks
     * @param array<string> $values
     * @param string $method
     *
     * @return void
     */
    protected function handleMultiValue($key, array $callbacks, array $values, $method)
    {
        list($validator, $normalizer) = $callbacks;
        if (true !== $validation = $validator($values)) {
            throw new \RuntimeException(sprintf(
                '%s is an invalid value'.($validation ? ' ('.$validation.')' : ''),
                json_encode($values)
            ));
        }

call_user_func(array($this->configSource, $method), $key, $normalizer($values));
    }

/**
     * Display the contents of the file in a pretty formatted way
     *
     * @param array<mixed[]|bool|string> $contents
     * @param array<mixed[]|string>      $rawContents
     * @param string|null                $k
     * @param bool                       $showSource
     *
     * @return void
     */
    protected function listConfiguration(array $contents, array $rawContents, OutputInterface $output, $k = null, $showSource = false)
    {
        $origK = $k;
        $io = $this->getIO();
        foreach ($contents as $key => $value) {
            if ($k === null && !in_array($key, array('config', 'repositories'))) {
                continue;
            }

$rawVal = isset($rawContents[$key]) ? $rawContents[$key] : null;

if (is_array($value) && (!is_numeric(key($value)) || ($key === 'repositories' && null === $k))) {
                $k .= Preg::replace('{^config\.}', '', $key . '.');
                $this->listConfiguration($value, $rawVal, $output, $k, $showSource);
                $k = $origK;

continue;
            }

if (is_array($value)) {
                $value = array_map(function ($val) {
                    return is_array($val) ? json_encode($val) : $val;
                }, $value);

$value = '['.implode(', ', $value).']';
            }

if (is_bool($value)) {
                $value = var_export($value, true);
            }

$source = '';
            if ($showSource) {
                $source = ' (' . $this->config->getSourceOfValue($k . $key) . ')';
            }
            if (is_string($rawVal) && $rawVal != $value) {
                $io->write('[<comment>' . $k . $key . '</comment>] <info>' . $rawVal . ' (' . $value . ')</info>' . $source, true, IOInterface::QUIET);
            } else {
                $io->write('[<comment>' . $k . $key . '</comment>] <info>' . $value . '</info>' . $source, true, IOInterface::QUIET);
            }
        }
    }
}
<?php

namespace Composer\Command;

use Composer\Composer;
use Composer\Config;
use Composer\Console\Application;
use Composer\Factory;
use Composer\IO\IOInterface;
use Composer\IO\NullIO;
use Composer\Plugin\PreCommandRunEvent;
use Composer\Package\Version\VersionParser;
use Composer\Plugin\PluginEvents;
use Composer\Util\Platform;
use Symfony\Component\Console\Helper\Table;
use Symfony\Component\Console\Helper\TableSeparator;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Terminal;

/**
 * Base class for Composer commands
 *
 * @method Application getApplication()
 *
 * @author Ryan Weaver <ryan@knplabs.com>
 * @author Konstantin Kudryashov <ever.zet@gmail.com>
 */
abstract class BaseCommand extends Command
{
    /**
     * @var Composer|null
     */
    private $composer;

/**
     * @var IOInterface
     */
    private $io;

/**
     * @param  bool              $required
     * @param  bool|null         $disablePlugins
     * @param  bool|null         $disableScripts
     * @throws \RuntimeException
     * @return Composer|null
     */
    public function getComposer($required = true, $disablePlugins = null, $disableScripts = null)
    {
        if (null === $this->composer) {
            $application = $this->getApplication();
            if ($application instanceof Application) {
                /* @var $application    Application */
                $this->composer = $application->getComposer($required, $disablePlugins, $disableScripts);
            /** @phpstan-ignore-next-line */
            } elseif ($required) {
                throw new \RuntimeException(
                    'Could not create a Composer\Composer instance, you must inject '.
                    'one if this command is not used with a Composer\Console\Application instance'
                );
            }
        }

return $this->composer;
    }

/**
     * @return void
     */
    public function setComposer(Composer $composer)
    {
        $this->composer = $composer;
    }

/**
     * Removes the cached composer instance
     *
     * @return void
     */
    public function resetComposer()
    {
        $this->composer = null;
        $this->getApplication()->resetComposer();
    }

/**
     * Whether or not this command is meant to call another command.
     *
     * This is mainly needed to avoid duplicated warnings messages.
     *
     * @return bool
     */
    public function isProxyCommand()
    {
        return false;
    }

/**
     * @return IOInterface
     */
    public function getIO()
    {
        if (null === $this->io) {
            $application = $this->getApplication();
            if ($application instanceof Application) {
                $this->io = $application->getIO();
            /** @phpstan-ignore-next-line */
            } else {
                $this->io = new NullIO();
            }
        }

return $this->io;
    }

/**
     * @return void
     */
    public function setIO(IOInterface $io)
    {
        $this->io = $io;
    }

/**
     * @inheritDoc
     *
     * @return void
     */
    protected function initialize(InputInterface $input, OutputInterface $output)
    {
        // initialize a plugin-enabled Composer instance, either local or global
        $disablePlugins = $input->hasParameterOption('--no-plugins');
        $disableScripts = $input->hasParameterOption('--no-scripts');
        if ($this instanceof SelfUpdateCommand) {
            $disablePlugins = true;
            $disableScripts = true;
        }

$composer = $this->getComposer(false, $disablePlugins, $disableScripts);
        if (null === $composer) {
            $composer = Factory::createGlobal($this->getIO(), $disablePlugins, $disableScripts);
        }
        if ($composer) {
            $preCommandRunEvent = new PreCommandRunEvent(PluginEvents::PRE_COMMAND_RUN, $input, $this->getName());
            $composer->getEventDispatcher()->dispatch($preCommandRunEvent->getName(), $preCommandRunEvent);
        }

if (true === $input->hasParameterOption(array('--no-ansi')) && $input->hasOption('no-progress')) {
            $input->setOption('no-progress', true);
        }

if (true == $input->hasOption('no-dev')) {
            if (!$input->getOption('no-dev') && true == Platform::getEnv('COMPOSER_NO_DEV')) {
                $input->setOption('no-dev', true);
            }
        }

parent::initialize($input, $output);
    }

/**
     * Returns preferSource and preferDist values based on the configuration.
     *
     * @param bool           $keepVcsRequiresPreferSource
     *
     * @return bool[] An array composed of the preferSource and preferDist values
     */
    protected function getPreferredInstallOptions(Config $config, InputInterface $input, $keepVcsRequiresPreferSource = false)
    {
        $preferSource = false;
        $preferDist = false;

switch ($config->get('preferred-install')) {
            case 'source':
                $preferSource = true;
                break;
            case 'dist':
                $preferDist = true;
                break;
            case 'auto':
            default:
                // noop
                break;
        }

if ($input->hasOption('prefer-install') && $input->getOption('prefer-install')) {
            if ($input->getOption('prefer-source')) {
                throw new \InvalidArgumentException('--prefer-source can not be used together with --prefer-install');
            }
            if ($input->getOption('prefer-dist')) {
                throw new \InvalidArgumentException('--prefer-dist can not be used together with --prefer-install');
            }
            switch ($input->getOption('prefer-install')) {
                case 'dist':
                    $input->setOption('prefer-dist', true);
                    break;
                case 'source':
                    $input->setOption('prefer-source', true);
                    break;
                case 'auto':
                    $preferDist = false;
                    $preferSource = false;
                    break;
                default:
                    throw new \UnexpectedValueException('--prefer-install accepts one of "dist", "source" or "auto", got '.$input->getOption('prefer-install'));
            }
        }

if ($input->getOption('prefer-source') || $input->getOption('prefer-dist') || ($keepVcsRequiresPreferSource && $input->hasOption('keep-vcs') && $input->getOption('keep-vcs'))) {
            $preferSource = $input->getOption('prefer-source') || ($keepVcsRequiresPreferSource && $input->hasOption('keep-vcs') && $input->getOption('keep-vcs'));
            $preferDist = (bool) $input->getOption('prefer-dist');
        }

return array($preferSource, $preferDist);
    }

/**
     * @param array<string, string> $requirements
     *
     * @return array<string, string>
     */
    protected function formatRequirements(array $requirements)
    {
        $requires = array();
        $requirements = $this->normalizeRequirements($requirements);
        foreach ($requirements as $requirement) {
            if (!isset($requirement['version'])) {
                throw new \UnexpectedValueException('Option '.$requirement['name'] .' is missing a version constraint, use e.g. '.$requirement['name'].':^1.0');
            }
            $requires[$requirement['name']] = $requirement['version'];
        }

return $requires;
    }

/**
     * @param array<string> $requirements
     *
     * @return list<array{name: string, version?: string}>
     */
    protected function normalizeRequirements(array $requirements)
    {
        $parser = new VersionParser();

return $parser->parseNameVersionPairs($requirements);
    }

/**
     * @param array<TableSeparator|mixed[]> $table
     *
     * @return void
     */
    protected function renderTable(array $table, OutputInterface $output)
    {
        $renderer = new Table($output);
        $renderer->setStyle('compact');
        $rendererStyle = $renderer->getStyle();
        if (method_exists($rendererStyle, 'setVerticalBorderChars')) {
            $rendererStyle->setVerticalBorderChars('');
        } else {
            // TODO remove in composer 2.2
            // @phpstan-ignore-next-line
            $rendererStyle->setVerticalBorderChar('');
        }
        $rendererStyle->setCellRowContentFormat('%s  ');
        $renderer->setRows($table)->render();
    }

/**
     * @return int
     */
    protected function getTerminalWidth()
    {
        if (class_exists('Symfony\Component\Console\Terminal')) {
            $terminal = new Terminal();
            $width = $terminal->getWidth();
        } else {
            // For versions of Symfony console before 3.2
            // TODO remove in composer 2.2
            // @phpstan-ignore-next-line
            list($width) = $this->getApplication()->getTerminalDimensions();
        }
        if (null === $width) {
            // In case the width is not detected, we're probably running the command
            // outside of a real terminal, use space without a limit
            $width = PHP_INT_MAX;
        }
        if (Platform::isWindows()) {
            $width--;
        } else {
            $width = max(80, $width);
        }

return $width;
    }
}
<?php

namespace Composer\Command;

/**
 * @author Davey Shafik <me@daveyshafik.com>
 */
class ExecCommand extends BaseCommand
{
    /**
     * @return void
     */
    protected function configure()
    {
        $this
            ->setName('exec')
            ->setDescription('Executes a vendored binary/script.')
            ->setDefinition(array(
                new InputOption('list', 'l', InputOption::VALUE_NONE),
                new InputArgument('binary', InputArgument::OPTIONAL, 'The binary to run, e.g. phpunit'),
                new InputArgument(
                    'args',
                    InputArgument::IS_ARRAY | InputArgument::OPTIONAL,
                    'Arguments to pass to the binary. Use <info>--</info> to separate from composer arguments'
                ),
            ))
            ->setHelp(
                <<<EOT
Executes a vendored binary/script.

Read more at https://getcomposer.org/doc/03-cli.md#exec
EOT
            )
        ;
    }

/**
     * @return int
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $composer = $this->getComposer();
        $binDir = $composer->getConfig()->get('bin-dir');
        if ($input->getOption('list') || !$input->getArgument('binary')) {
            $bins = glob($binDir . '/*');
            $bins = array_merge($bins, array_map(function ($e) {
                return "$e (local)";
            }, $composer->getPackage()->getBinaries()));

if (!$bins) {
                throw new \RuntimeException("No binaries found in composer.json or in bin-dir ($binDir)");
            }

$this->getIO()->write(
                <<<EOT
<comment>Available binaries:</comment>
EOT
            );

foreach ($bins as $bin) {
                // skip .bat copies
                if (isset($previousBin) && $bin === $previousBin.'.bat') {
                    continue;
                }

$previousBin = $bin;
                $bin = basename($bin);
                $this->getIO()->write(
                    <<<EOT
<info>- $bin</info>
EOT
                );
            }

return 0;
        }

$binary = $input->getArgument('binary');

$dispatcher = $composer->getEventDispatcher();
        $dispatcher->addListener('__exec_command', $binary);

// If the CWD was modified, we restore it to what it was initially, as it was
        // most likely modified by the global command, and we want exec to run in the local working directory
        // not the global one
        if (getcwd() !== $this->getApplication()->getInitialWorkingDirectory()) {
            try {
                chdir($this->getApplication()->getInitialWorkingDirectory());
            } catch (\Exception $e) {
                throw new \RuntimeException('Could not switch back to working directory "'.$this->getApplication()->getInitialWorkingDirectory().'"', 0, $e);
            }
        }

return $dispatcher->dispatchScript('__exec_command', true, $input->getArgument('args'));
    }
}
<?php

namespace Composer\Command;

use Composer\Package\CompletePackageInterface;
use Composer\Repository\RepositoryInterface;
use Composer\Repository\RootPackageRepository;
use Composer\Repository\RepositoryFactory;
use Composer\Util\Platform;
use Composer\Util\ProcessExecutor;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * @author Robert Schönthal <seroscho@googlemail.com>
 */
class HomeCommand extends BaseCommand
{
    /**
     * @inheritDoc
     *
     * @return void
     */
    protected function configure()
    {
        $this
            ->setName('browse')
            ->setAliases(array('home'))
            ->setDescription('Opens the package\'s repository URL or homepage in your browser.')
            ->setDefinition(array(
                new InputArgument('packages', InputArgument::IS_ARRAY, 'Package(s) to browse to.'),
                new InputOption('homepage', 'H', InputOption::VALUE_NONE, 'Open the homepage instead of the repository URL.'),
                new InputOption('show', 's', InputOption::VALUE_NONE, 'Only show the homepage or repository URL.'),
            ))
            ->setHelp(
                <<<EOT
The home command opens or shows a package's repository URL or
homepage in your default browser.

To open the homepage by default, use -H or --homepage.
To show instead of open the repository or homepage URL, use -s or --show.

Read more at https://getcomposer.org/doc/03-cli.md#browse-home
EOT
            );
    }

/**
     * @inheritDoc
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $repos = $this->initializeRepos();
        $io = $this->getIO();
        $return = 0;

$packages = $input->getArgument('packages');
        if (!$packages) {
            $io->writeError('No package specified, opening homepage for the root package');
            $packages = array($this->getComposer()->getPackage()->getName());
        }

foreach ($packages as $packageName) {
            $handled = false;
            $packageExists = false;
            foreach ($repos as $repo) {
                foreach ($repo->findPackages($packageName) as $package) {
                    $packageExists = true;
                    if ($package instanceof CompletePackageInterface && $this->handlePackage($package, $input->getOption('homepage'), $input->getOption('show'))) {
                        $handled = true;
                        break 2;
                    }
                }
            }

if (!$packageExists) {
                $return = 1;
                $io->writeError('<warning>Package '.$packageName.' not found</warning>');
            }

if (!$handled) {
                $return = 1;
                $io->writeError('<warning>'.($input->getOption('homepage') ? 'Invalid or missing homepage' : 'Invalid or missing repository URL').' for '.$packageName.'</warning>');
            }
        }

return $return;
    }

/**
     * @param bool $showHomepage
     * @param bool $showOnly
     * @return bool
     */
    private function handlePackage(CompletePackageInterface $package, $showHomepage, $showOnly)
    {
        $support = $package->getSupport();
        $url = isset($support['source']) ? $support['source'] : $package->getSourceUrl();
        if (!$url || $showHomepage) {
            $url = $package->getHomepage();
        }

if (!$url || !filter_var($url, FILTER_VALIDATE_URL)) {
            return false;
        }

if ($showOnly) {
            $this->getIO()->write(sprintf('<info>%s</info>', $url));
        } else {
            $this->openBrowser($url);
        }

return true;
    }

/**
     * opens a url in your system default browser
     *
     * @param string $url
     * @return void
     */
    private function openBrowser($url)
    {
        $url = ProcessExecutor::escape($url);

$process = new ProcessExecutor($this->getIO());
        if (Platform::isWindows()) {
            $process->execute('start "web" explorer ' . $url, $output);

return;
        }

$linux = $process->execute('which xdg-open', $output);
        $osx = $process->execute('which open', $output);

if (0 === $linux) {
            $process->execute('xdg-open ' . $url, $output);
        } elseif (0 === $osx) {
            $process->execute('open ' . $url, $output);
        } else {
            $this->getIO()->writeError('No suitable browser opening command found, open yourself: ' . $url);
        }
    }

/**
     * Initializes repositories
     *
     * Returns an array of repos in order they should be checked in
     *
     * @return RepositoryInterface[]
     */
    private function initializeRepos()
    {
        $composer = $this->getComposer(false);

if ($composer) {
            return array_merge(
                array(new RootPackageRepository($composer->getPackage())), // root package
                array($composer->getRepositoryManager()->getLocalRepository()), // installed packages
                $composer->getRepositoryManager()->getRepositories() // remotes
            );
        }

return RepositoryFactory::defaultRepos($this->getIO());
    }
}
<?php

namespace Composer\Command;

use Composer\Composer;
use Composer\DependencyResolver\Request;
use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterFactory;
use Composer\Installer;
use Composer\IO\IOInterface;
use Composer\Package\Loader\RootPackageLoader;
use Composer\Pcre\Preg;
use Composer\Plugin\CommandEvent;
use Composer\Plugin\PluginEvents;
use Composer\Package\Version\VersionParser;
use Composer\Util\HttpDownloader;
use Composer\Semver\Constraint\MultiConstraint;
use Composer\Package\Link;
use Symfony\Component\Console\Helper\Table;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Question\Question;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 * @author Nils Adermann <naderman@naderman.de>
 */
class UpdateCommand extends BaseCommand
{
    /**
     * @return void
     */
    protected function configure()
    {
        $this
            ->setName('update')
            ->setAliases(array('u', 'upgrade'))
            ->setDescription('Upgrades your dependencies to the latest version according to composer.json, and updates the composer.lock file.')
            ->setDefinition(array(
                new InputArgument('packages', InputArgument::IS_ARRAY | InputArgument::OPTIONAL, 'Packages that should be updated, if not provided all packages are.'),
                new InputOption('with', null, InputOption::VALUE_IS_ARRAY | InputOption::VALUE_REQUIRED, 'Temporary version constraint to add, e.g. foo/bar:1.0.0 or foo/bar=1.0.0'),
                new InputOption('prefer-source', null, InputOption::VALUE_NONE, 'Forces installation from package sources when possible, including VCS information.'),
                new InputOption('prefer-dist', null, InputOption::VALUE_NONE, 'Forces installation from package dist (default behavior).'),
                new InputOption('prefer-install', null, InputOption::VALUE_REQUIRED, 'Forces installation from package dist|source|auto (auto chooses source for dev versions, dist for the rest).'),
                new InputOption('dry-run', null, InputOption::VALUE_NONE, 'Outputs the operations but will not execute anything (implicitly enables --verbose).'),
                new InputOption('dev', null, InputOption::VALUE_NONE, 'DEPRECATED: Enables installation of require-dev packages (enabled by default, only present for BC).'),
                new InputOption('no-dev', null, InputOption::VALUE_NONE, 'Disables installation of require-dev packages.'),
                new InputOption('lock', null, InputOption::VALUE_NONE, 'Overwrites the lock file hash to suppress warning about the lock file being out of date without updating package versions. Package metadata like mirrors and URLs are updated if they changed.'),
                new InputOption('no-install', null, InputOption::VALUE_NONE, 'Skip the install step after updating the composer.lock file.'),
                new InputOption('no-autoloader', null, InputOption::VALUE_NONE, 'Skips autoloader generation'),
                new InputOption('no-suggest', null, InputOption::VALUE_NONE, 'DEPRECATED: This flag does not exist anymore.'),
                new InputOption('no-progress', null, InputOption::VALUE_NONE, 'Do not output download progress.'),
                new InputOption('with-dependencies', 'w', InputOption::VALUE_NONE, 'Update also dependencies of packages in the argument list, except those which are root requirements.'),
                new InputOption('with-all-dependencies', 'W', InputOption::VALUE_NONE, 'Update also dependencies of packages in the argument list, including those which are root requirements.'),
                new InputOption('verbose', 'v|vv|vvv', InputOption::VALUE_NONE, 'Shows more details including new commits pulled in when updating packages.'),
                new InputOption('optimize-autoloader', 'o', InputOption::VALUE_NONE, 'Optimize autoloader during autoloader dump.'),
                new InputOption('classmap-authoritative', 'a', InputOption::VALUE_NONE, 'Autoload classes from the classmap only. Implicitly enables `--optimize-autoloader`.'),
                new InputOption('apcu-autoloader', null, InputOption::VALUE_NONE, 'Use APCu to cache found/not-found classes.'),
                new InputOption('apcu-autoloader-prefix', null, InputOption::VALUE_REQUIRED, 'Use a custom prefix for the APCu autoloader cache. Implicitly enables --apcu-autoloader'),
                new InputOption('ignore-platform-req', null, InputOption::VALUE_REQUIRED | InputOption::VALUE_IS_ARRAY, 'Ignore a specific platform requirement (php & ext- packages).'),
                new InputOption('ignore-platform-reqs', null, InputOption::VALUE_NONE, 'Ignore all platform requirements (php & ext- packages).'),
                new InputOption('prefer-stable', null, InputOption::VALUE_NONE, 'Prefer stable versions of dependencies.'),
                new InputOption('prefer-lowest', null, InputOption::VALUE_NONE, 'Prefer lowest versions of dependencies.'),
                new InputOption('interactive', 'i', InputOption::VALUE_NONE, 'Interactive interface with autocompletion to select the packages to update.'),
                new InputOption('root-reqs', null, InputOption::VALUE_NONE, 'Restricts the update to your first degree dependencies.'),
            ))
            ->setHelp(
                <<<EOT
The <info>update</info> command reads the composer.json file from the
current directory, processes it, and updates, removes or installs all the
dependencies.

<info>php composer.phar update</info>

To limit the update operation to a few packages, you can list the package(s)
you want to update as such:

<info>php composer.phar update vendor/package1 foo/mypackage [...]</info>

You may also use an asterisk (*) pattern to limit the update operation to package(s)
from a specific vendor:

<info>php composer.phar update vendor/package1 foo/* [...]</info>

To run an update with more restrictive constraints you can use:

<info>php composer.phar update --with vendor/package:1.0.*</info>

To run a partial update with more restrictive constraints you can use the shorthand:

<info>php composer.phar update vendor/package:1.0.*</info>

To select packages names interactively with auto-completion use <info>-i</info>.

Read more at https://getcomposer.org/doc/03-cli.md#update-u
EOT
            )
        ;
    }

/**
     * @return int
     * @throws \Exception
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $io = $this->getIO();
        if ($input->getOption('dev')) {
            $io->writeError('<warning>You are using the deprecated option "--dev". It has no effect and will break in Composer 3.</warning>');
        }
        if ($input->getOption('no-suggest')) {
            $io->writeError('<warning>You are using the deprecated option "--no-suggest". It has no effect and will break in Composer 3.</warning>');
        }

$composer = $this->getComposer(true, $input->getOption('no-plugins'), $input->getOption('no-scripts'));

if (!HttpDownloader::isCurlEnabled()) {
            $io->writeError('<warning>Composer is operating significantly slower than normal because you do not have the PHP curl extension enabled.</warning>');
        }

$packages = $input->getArgument('packages');
        $reqs = $this->formatRequirements($input->getOption('with'));

// extract --with shorthands from the allowlist
        if ($packages) {
            $allowlistPackagesWithRequirements = array_filter($packages, function ($pkg) {
                return Preg::isMatch('{\S+[ =:]\S+}', $pkg);
            });
            foreach ($this->formatRequirements($allowlistPackagesWithRequirements) as $package => $constraint) {
                $reqs[$package] = $constraint;
            }

// replace the foo/bar:req by foo/bar in the allowlist
            foreach ($allowlistPackagesWithRequirements as $package) {
                $packageName = Preg::replace('{^([^ =:]+)[ =:].*$}', '$1', $package);
                $index = array_search($package, $packages);
                $packages[$index] = $packageName;
            }
        }

$rootPackage = $composer->getPackage();
        $rootRequires = $rootPackage->getRequires();
        $rootDevRequires = $rootPackage->getDevRequires();
        foreach ($reqs as $package => $constraint) {
            if (isset($rootRequires[$package])) {
                $rootRequires[$package] = $this->appendConstraintToLink($rootRequires[$package], $constraint);
            } elseif (isset($rootDevRequires[$package])) {
                $rootDevRequires[$package] = $this->appendConstraintToLink($rootDevRequires[$package], $constraint);
            } else {
                throw new \UnexpectedValueException('Only root package requirements can receive temporary constraints and '.$package.' is not one');
            }
        }
        $rootPackage->setRequires($rootRequires);
        $rootPackage->setDevRequires($rootDevRequires);
        $rootPackage->setReferences(RootPackageLoader::extractReferences($reqs, $rootPackage->getReferences()));
        $rootPackage->setStabilityFlags(RootPackageLoader::extractStabilityFlags($reqs, $rootPackage->getMinimumStability(), $rootPackage->getStabilityFlags()));

if ($input->getOption('interactive')) {
            $packages = $this->getPackagesInteractively($io, $input, $output, $composer, $packages);
        }

if ($input->getOption('root-reqs')) {
            $requires = array_keys($rootRequires);
            if (!$input->getOption('no-dev')) {
                $requires = array_merge($requires, array_keys($rootDevRequires));
            }

if (!empty($packages)) {
                $packages = array_intersect($packages, $requires);
            } else {
                $packages = $requires;
            }
        }

// the arguments lock/nothing/mirrors are not package names but trigger a mirror update instead
        // they are further mutually exclusive with listing actual package names
        $filteredPackages = array_filter($packages, function ($package) {
            return !in_array($package, array('lock', 'nothing', 'mirrors'), true);
        });
        $updateMirrors = $input->getOption('lock') || count($filteredPackages) != count($packages);
        $packages = $filteredPackages;

if ($updateMirrors && !empty($packages)) {
            $io->writeError('<error>You cannot simultaneously update only a selection of packages and regenerate the lock file metadata.</error>');

return -1;
        }

$commandEvent = new CommandEvent(PluginEvents::COMMAND, 'update', $input, $output);
        $composer->getEventDispatcher()->dispatch($commandEvent->getName(), $commandEvent);

$composer->getInstallationManager()->setOutputProgress(!$input->getOption('no-progress'));

$install = Installer::create($io, $composer);

$config = $composer->getConfig();
        list($preferSource, $preferDist) = $this->getPreferredInstallOptions($config, $input);

$updateAllowTransitiveDependencies = Request::UPDATE_ONLY_LISTED;
        if ($input->getOption('with-all-dependencies')) {
            $updateAllowTransitiveDependencies = Request::UPDATE_LISTED_WITH_TRANSITIVE_DEPS;
        } elseif ($input->getOption('with-dependencies')) {
            $updateAllowTransitiveDependencies = Request::UPDATE_LISTED_WITH_TRANSITIVE_DEPS_NO_ROOT_REQUIRE;
        }

$ignorePlatformReqs = $input->getOption('ignore-platform-reqs') ?: ($input->getOption('ignore-platform-req') ?: false);

$install
            ->setDryRun($input->getOption('dry-run'))
            ->setVerbose($input->getOption('verbose'))
            ->setPreferSource($preferSource)
            ->setPreferDist($preferDist)
            ->setDevMode(!$input->getOption('no-dev'))
            ->setDumpAutoloader(!$input->getOption('no-autoloader'))
            ->setOptimizeAutoloader($optimize)
            ->setClassMapAuthoritative($authoritative)
            ->setApcuAutoloader($apcu, $apcuPrefix)
            ->setUpdate(true)
            ->setInstall(!$input->getOption('no-install'))
            ->setUpdateMirrors($updateMirrors)
            ->setUpdateAllowList($packages)
            ->setUpdateAllowTransitiveDependencies($updateAllowTransitiveDependencies)
            ->setPlatformRequirementFilter(PlatformRequirementFilterFactory::fromBoolOrList($ignorePlatformReqs))
            ->setPreferStable($input->getOption('prefer-stable'))
            ->setPreferLowest($input->getOption('prefer-lowest'))
        ;

if ($input->getOption('no-plugins')) {
            $install->disablePlugins();
        }

return $install->run();
    }

/**
     * @param array<string> $packages
     * @return array<string>
     */
    private function getPackagesInteractively(IOInterface $io, InputInterface $input, OutputInterface $output, Composer $composer, array $packages)
    {
        if (!$input->isInteractive()) {
            throw new \InvalidArgumentException('--interactive cannot be used in non-interactive terminals.');
        }

$requires = array_merge(
            $composer->getPackage()->getRequires(),
            $composer->getPackage()->getDevRequires()
        );
        $autocompleterValues = array();
        foreach ($requires as $require) {
            $target = $require->getTarget();
            $autocompleterValues[strtolower($target)] = $target;
        }

$installedPackages = $composer->getRepositoryManager()->getLocalRepository()->getPackages();
        foreach ($installedPackages as $package) {
            $autocompleterValues[$package->getName()] = $package->getPrettyName();
        }

$helper = $this->getHelper('question');
        $question = new Question('<comment>Enter package name: </comment>', null);

$io->writeError('<info>Press enter without value to end submission</info>');

do {
            $autocompleterValues = array_diff($autocompleterValues, $packages);
            $question->setAutocompleterValues($autocompleterValues);
            $addedPackage = $helper->ask($input, $output, $question);

if (!is_string($addedPackage) || empty($addedPackage)) {
                break;
            }

$addedPackage = strtolower($addedPackage);
            if (!in_array($addedPackage, $packages)) {
                $packages[] = $addedPackage;
            }
        } while (true);

$packages = array_filter($packages);
        if (!$packages) {
            throw new \InvalidArgumentException('You must enter minimum one package.');
        }

$table = new Table($output);
        $table->setHeaders(array('Selected packages'));
        foreach ($packages as $package) {
            $table->addRow(array($package));
        }
        $table->render();

if ($io->askConfirmation(sprintf(
            'Would you like to continue and update the above package%s [<comment>yes</comment>]? ',
            1 === count($packages) ? '' : 's'
        ))) {
            return $packages;
        }

throw new \RuntimeException('Installation aborted.');
    }

/**
     * @param string $constraint
     * @return Link
     */
    private function appendConstraintToLink(Link $link, $constraint)
    {
        $parser = new VersionParser;
        $oldPrettyString = $link->getConstraint()->getPrettyString();
        $newConstraint = MultiConstraint::create(array($link->getConstraint(), $parser->parseConstraints($constraint)));
        $newConstraint->setPrettyString($oldPrettyString.', '.$constraint);

return new Link(
            $link->getSource(),
            $link->getTarget(),
            $newConstraint,
            /** @phpstan-ignore-next-line */
            $link->getDescription(),
            $link->getPrettyConstraint() . ', ' . $constraint
        );
    }
}
<?php

namespace Composer\Command;

use Composer\Composer;
use Composer\DependencyResolver\DefaultPolicy;
use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterFactory;
use Composer\Json\JsonFile;
use Composer\Package\BasePackage;
use Composer\Package\CompletePackageInterface;
use Composer\Package\Link;
use Composer\Package\AliasPackage;
use Composer\Package\Package;
use Composer\Package\PackageInterface;
use Composer\Package\Version\VersionParser;
use Composer\Package\Version\VersionSelector;
use Composer\Pcre\Preg;
use Composer\Plugin\CommandEvent;
use Composer\Plugin\PluginEvents;
use Composer\Repository\InstalledArrayRepository;
use Composer\Repository\ComposerRepository;
use Composer\Repository\CompositeRepository;
use Composer\Repository\FilterRepository;
use Composer\Repository\PlatformRepository;
use Composer\Repository\RepositoryFactory;
use Composer\Repository\InstalledRepository;
use Composer\Repository\RepositoryInterface;
use Composer\Repository\RepositorySet;
use Composer\Repository\RootPackageRepository;
use Composer\Semver\Constraint\ConstraintInterface;
use Composer\Semver\Semver;
use Composer\Spdx\SpdxLicenses;
use Symfony\Component\Console\Formatter\OutputFormatterStyle;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * @author Robert Schönthal <seroscho@googlemail.com>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 * @author Jérémy Romey <jeremyFreeAgent>
 * @author Mihai Plasoianu <mihai@plasoianu.de>
 */
class ShowCommand extends BaseCommand
{
    /** @var VersionParser */
    protected $versionParser;
    /** @var string[] */
    protected $colors;

/** @var ?RepositorySet */
    private $repositorySet;

/**
     * @return void
     */
    protected function configure()
    {
        $this
            ->setName('show')
            ->setAliases(array('info'))
            ->setDescription('Shows information about packages.')
            ->setDefinition(array(
                new InputArgument('package', InputArgument::OPTIONAL, 'Package to inspect. Or a name including a wildcard (*) to filter lists of packages instead.'),
                new InputArgument('version', InputArgument::OPTIONAL, 'Version or version constraint to inspect'),
                new InputOption('all', null, InputOption::VALUE_NONE, 'List all packages'),
                new InputOption('locked', null, InputOption::VALUE_NONE, 'List all locked packages'),
                new InputOption('installed', 'i', InputOption::VALUE_NONE, 'List installed packages only (enabled by default, only present for BC).'),
                new InputOption('platform', 'p', InputOption::VALUE_NONE, 'List platform packages only'),
                new InputOption('available', 'a', InputOption::VALUE_NONE, 'List available packages only'),
                new InputOption('self', 's', InputOption::VALUE_NONE, 'Show the root package information'),
                new InputOption('name-only', 'N', InputOption::VALUE_NONE, 'List package names only'),
                new InputOption('path', 'P', InputOption::VALUE_NONE, 'Show package paths'),
                new InputOption('tree', 't', InputOption::VALUE_NONE, 'List the dependencies as a tree'),
                new InputOption('latest', 'l', InputOption::VALUE_NONE, 'Show the latest version'),
                new InputOption('outdated', 'o', InputOption::VALUE_NONE, 'Show the latest version but only for packages that are outdated'),
                new InputOption('ignore', null, InputOption::VALUE_REQUIRED | InputOption::VALUE_IS_ARRAY, 'Ignore specified package(s). Use it with the --outdated option if you don\'t want to be informed about new versions of some packages.'),
                new InputOption('minor-only', 'm', InputOption::VALUE_NONE, 'Show only packages that have minor SemVer-compatible updates. Use with the --outdated option.'),
                new InputOption('direct', 'D', InputOption::VALUE_NONE, 'Shows only packages that are directly required by the root package'),
                new InputOption('strict', null, InputOption::VALUE_NONE, 'Return a non-zero exit code when there are outdated packages'),
                new InputOption('format', 'f', InputOption::VALUE_REQUIRED, 'Format of the output: text or json', 'text'),
                new InputOption('no-dev', null, InputOption::VALUE_NONE, 'Disables search in require-dev packages.'),
                new InputOption('ignore-platform-req', null, InputOption::VALUE_REQUIRED | InputOption::VALUE_IS_ARRAY, 'Ignore a specific platform requirement (php & ext- packages). Use with the --outdated option'),
                new InputOption('ignore-platform-reqs', null, InputOption::VALUE_NONE, 'Ignore all platform requirements (php & ext- packages). Use with the --outdated option'),
            ))
            ->setHelp(
                <<<EOT
The show command displays detailed information about a package, or
lists all packages available.

Read more at https://getcomposer.org/doc/03-cli.md#show
EOT
            )
        ;
    }

protected function execute(InputInterface $input, OutputInterface $output)
    {
        $this->versionParser = new VersionParser;
        if ($input->getOption('tree')) {
            $this->initStyles($output);
        }

$composer = $this->getComposer(false);
        $io = $this->getIO();

if ($input->getOption('installed')) {
            $io->writeError('<warning>You are using the deprecated option "installed". Only installed packages are shown by default now. The --all option can be used to show all packages.</warning>');
        }

if ($input->getOption('outdated')) {
            $input->setOption('latest', true);
        } elseif ($input->getOption('ignore')) {
            $io->writeError('<warning>You are using the option "ignore" for action other than "outdated", it will be ignored.</warning>');
        }

if ($input->getOption('direct') && ($input->getOption('all') || $input->getOption('available') || $input->getOption('platform'))) {
            $io->writeError('The --direct (-D) option is not usable in combination with --all, --platform (-p) or --available (-a)');

return 1;
        }

if ($input->getOption('tree') && ($input->getOption('all') || $input->getOption('available'))) {
            $io->writeError('The --tree (-t) option is not usable in combination with --all or --available (-a)');

return 1;
        }

if ($input->getOption('tree') && $input->getOption('latest')) {
            $io->writeError('The --tree (-t) option is not usable in combination with --latest (-l)');

return 1;
        }

if ($input->getOption('tree') && $input->getOption('path')) {
            $io->writeError('The --tree (-t) option is not usable in combination with --path (-P)');

return 1;
        }

$ignorePlatformReqs = $input->getOption('ignore-platform-reqs') ?: ($input->getOption('ignore-platform-req') ?: false);

// init repos
        $platformOverrides = array();
        if ($composer) {
            $platformOverrides = $composer->getConfig()->get('platform') ?: array();
        }
        $platformRepo = new PlatformRepository(array(), $platformOverrides);
        $lockedRepo = null;

if ($input->getOption('self')) {
            $package = $this->getComposer()->getPackage();
            if ($input->getOption('name-only')) {
                $io->write($package->getName());

return 0;
            }
            $repos = $installedRepo = new InstalledRepository(array(new RootPackageRepository($package)));
        } elseif ($input->getOption('platform')) {
            $repos = $installedRepo = new InstalledRepository(array($platformRepo));
        } elseif ($input->getOption('available')) {
            $installedRepo = new InstalledRepository(array($platformRepo));
            if ($composer) {
                $repos = new CompositeRepository($composer->getRepositoryManager()->getRepositories());
                $installedRepo->addRepository($composer->getRepositoryManager()->getLocalRepository());
            } else {
                $defaultRepos = RepositoryFactory::defaultRepos($io);
                $repos = new CompositeRepository($defaultRepos);
                $io->writeError('No composer.json found in the current directory, showing available packages from ' . implode(', ', array_keys($defaultRepos)));
            }
        } elseif ($input->getOption('all') && $composer) {
            $localRepo = $composer->getRepositoryManager()->getLocalRepository();
            $locker = $composer->getLocker();
            if ($locker->isLocked()) {
                $lockedRepo = $locker->getLockedRepository(true);
                $installedRepo = new InstalledRepository(array($lockedRepo, $localRepo, $platformRepo));
            } else {
                $installedRepo = new InstalledRepository(array($localRepo, $platformRepo));
            }
            $repos = new CompositeRepository(array_merge(array(new FilterRepository($installedRepo, array('canonical' => false))), $composer->getRepositoryManager()->getRepositories()));
        } elseif ($input->getOption('all')) {
            $defaultRepos = RepositoryFactory::defaultRepos($io);
            $io->writeError('No composer.json found in the current directory, showing available packages from ' . implode(', ', array_keys($defaultRepos)));
            $installedRepo = new InstalledRepository(array($platformRepo));
            $repos = new CompositeRepository(array_merge(array($installedRepo), $defaultRepos));
        } elseif ($input->getOption('locked')) {
            if (!$composer || !$composer->getLocker()->isLocked()) {
                throw new \UnexpectedValueException('A valid composer.json and composer.lock files is required to run this command with --locked');
            }
            $locker = $composer->getLocker();
            $lockedRepo = $locker->getLockedRepository(!$input->getOption('no-dev'));
            $repos = $installedRepo = new InstalledRepository(array($lockedRepo));
        } else {
            // --installed / default case
            if (!$composer) {
                $composer = $this->getComposer();
            }
            $rootPkg = $composer->getPackage();
            $repos = $installedRepo = new InstalledRepository(array($composer->getRepositoryManager()->getLocalRepository()));

if ($input->getOption('no-dev')) {
                $packages = $this->filterRequiredPackages($installedRepo, $rootPkg);
                $repos = $installedRepo = new InstalledRepository(array(new InstalledArrayRepository(array_map(function ($pkg) {
                    return clone $pkg;
                }, $packages))));
            }

if (!$installedRepo->getPackages() && ($rootPkg->getRequires() || $rootPkg->getDevRequires())) {
                $io->writeError('<warning>No dependencies installed. Try running composer install or update.</warning>');
            }
        }

if ($composer) {
            $commandEvent = new CommandEvent(PluginEvents::COMMAND, 'show', $input, $output);
            $composer->getEventDispatcher()->dispatch($commandEvent->getName(), $commandEvent);
        }

if ($input->getOption('latest') && null === $composer) {
            $io->writeError('No composer.json found in the current directory, disabling "latest" option');
            $input->setOption('latest', false);
        }

$packageFilter = $input->getArgument('package');

// show single package or single version
        if (($packageFilter && false === strpos($packageFilter, '*')) || !empty($package)) {
            if (empty($package)) {
                list($package, $versions) = $this->getPackage($installedRepo, $repos, $input->getArgument('package'), $input->getArgument('version'));

if (empty($package)) {
                    $options = $input->getOptions();
                    if (!isset($options['working-dir']) || !file_exists('composer.json')) {
                        if (PlatformRepository::isPlatformPackage($input->getArgument('package')) && !$input->getOption('platform')) {
                            throw new \InvalidArgumentException('Package ' . $packageFilter . ' not found, try using --platform (-p) to show platform packages.');
                        }
                        throw new \InvalidArgumentException('Package ' . $packageFilter . ' not found');
                    }

$io->writeError('Package ' . $packageFilter . ' not found in ' . $options['working-dir'] . '/composer.json');

return 1;
                }
            } else {
                $versions = array($package->getPrettyVersion() => $package->getVersion());
            }

$exitCode = 0;
            if ($input->getOption('tree')) {
                $arrayTree = $this->generatePackageTree($package, $installedRepo, $repos);

if ('json' === $format) {
                    $io->write(JsonFile::encode(array('installed' => array($arrayTree))));
                } else {
                    $this->displayPackageTree(array($arrayTree));
                }
            } else {
                $latestPackage = null;
                if ($input->getOption('latest')) {
                    $latestPackage = $this->findLatestPackage($package, $composer, $platformRepo, $input->getOption('minor-only'), $ignorePlatformReqs);
                }
                if (
                    $input->getOption('outdated')
                    && $input->getOption('strict')
                    && $latestPackage
                    && $latestPackage->getFullPrettyVersion() !== $package->getFullPrettyVersion()
                    && (!$latestPackage instanceof CompletePackageInterface || !$latestPackage->isAbandoned())
                ) {
                    $exitCode = 1;
                }
                if ($input->getOption('path')) {
                    $io->write($package->getName(), false);
                    $io->write(' ' . strtok(realpath($composer->getInstallationManager()->getInstallPath($package)), "\r\n"));

return $exitCode;
                }

if ('json' === $format) {
                    $this->printPackageInfoAsJson($package, $versions, $installedRepo, $latestPackage ?: null);
                } else {
                    $this->printPackageInfo($package, $versions, $installedRepo, $latestPackage ?: null);
                }
            }

return $exitCode;
        }

// show tree view if requested
        if ($input->getOption('tree')) {
            $rootRequires = $this->getRootRequires();
            $packages = $installedRepo->getPackages();
            usort($packages, function (BasePackage $a, BasePackage $b) {
                return strcmp((string) $a, (string) $b);
            });
            $arrayTree = array();
            foreach ($packages as $package) {
                if (in_array($package->getName(), $rootRequires, true)) {
                    $arrayTree[] = $this->generatePackageTree($package, $installedRepo, $repos);
                }
            }

if ('json' === $format) {
                $io->write(JsonFile::encode(array('installed' => $arrayTree)));
            } else {
                $this->displayPackageTree($arrayTree);
            }

return 0;
        }

// list packages
        $packages = array();
        $packageFilterRegex = null;
        if (null !== $packageFilter) {
            $packageFilterRegex = '{^'.str_replace('\\*', '.*?', preg_quote($packageFilter)).'$}i';
        }

$packageListFilter = array();
        if ($input->getOption('direct')) {
            $packageListFilter = $this->getRootRequires();
        }

if ($input->getOption('path') && null === $composer) {
            $io->writeError('No composer.json found in the current directory, disabling "path" option');
            $input->setOption('path', false);
        }

foreach ($repos->getRepositories() as $repo) {
            if ($repo === $platformRepo) {
                $type = 'platform';
            } elseif ($lockedRepo !== null && $repo === $lockedRepo) {
                $type = 'locked';
            } elseif ($repo === $installedRepo || in_array($repo, $installedRepo->getRepositories(), true)) {
                $type = 'installed';
            } else {
                $type = 'available';
            }
            if ($repo instanceof ComposerRepository) {
                foreach ($repo->getPackageNames($packageFilter) as $name) {
                    $packages[$type][$name] = $name;
                }
            } else {
                foreach ($repo->getPackages() as $package) {
                    if (!isset($packages[$type][$package->getName()])
                        || !is_object($packages[$type][$package->getName()])
                        || version_compare($packages[$type][$package->getName()]->getVersion(), $package->getVersion(), '<')
                    ) {
                        while ($package instanceof AliasPackage) {
                            $package = $package->getAliasOf();
                        }
                        if (!$packageFilterRegex || Preg::isMatch($packageFilterRegex, $package->getName())) {
                            if (!$packageListFilter || in_array($package->getName(), $packageListFilter, true)) {
                                $packages[$type][$package->getName()] = $package;
                            }
                        }
                    }
                }
                if ($repo === $platformRepo) {
                    foreach ($platformRepo->getDisabledPackages() as $name => $package) {
                        $packages[$type][$name] = $package;
                    }
                }
            }
        }

$showAllTypes = $input->getOption('all');
        $showLatest = $input->getOption('latest');
        $showMinorOnly = $input->getOption('minor-only');
        $ignoredPackages = array_map('strtolower', $input->getOption('ignore'));
        $indent = $showAllTypes ? '  ' : '';
        /** @var PackageInterface[] $latestPackages */
        $latestPackages = array();
        $exitCode = 0;
        $viewData = array();
        $viewMetaData = array();
        foreach (array('platform' => true, 'locked' => true, 'available' => false, 'installed' => true) as $type => $showVersion) {
            if (isset($packages[$type])) {
                ksort($packages[$type]);

$nameLength = $versionLength = $latestLength = 0;

if ($showLatest && $showVersion) {
                    foreach ($packages[$type] as $package) {
                        if (is_object($package)) {
                            $latestPackage = $this->findLatestPackage($package, $composer, $platformRepo, $showMinorOnly, $ignorePlatformReqs);
                            if ($latestPackage === false) {
                                continue;
                            }

$latestPackages[$package->getPrettyName()] = $latestPackage;
                        }
                    }
                }

$writePath = !$input->getOption('name-only') && $input->getOption('path');
                $writeVersion = !$input->getOption('name-only') && !$input->getOption('path') && $showVersion;
                $writeLatest = $writeVersion && $showLatest;
                $writeDescription = !$input->getOption('name-only') && !$input->getOption('path');

$hasOutdatedPackages = false;

$viewData[$type] = array();
                foreach ($packages[$type] as $package) {
                    $packageViewData = array();
                    if (is_object($package)) {
                        $latestPackage = null;
                        if ($showLatest && isset($latestPackages[$package->getPrettyName()])) {
                            $latestPackage = $latestPackages[$package->getPrettyName()];
                        }

// Determine if Composer is checking outdated dependencies and if current package should trigger non-default exit code
                        $packageIsUpToDate = $latestPackage && $latestPackage->getFullPrettyVersion() === $package->getFullPrettyVersion() && (!$latestPackage instanceof CompletePackageInterface || !$latestPackage->isAbandoned());
                        $packageIsIgnored = \in_array($package->getPrettyName(), $ignoredPackages, true);
                        if ($input->getOption('outdated') && ($packageIsUpToDate || $packageIsIgnored)) {
                            continue;
                        }

if ($input->getOption('outdated') || $input->getOption('strict')) {
                            $hasOutdatedPackages = true;
                        }

$packageViewData['name'] = $package->getPrettyName();
                        $nameLength = max($nameLength, strlen($package->getPrettyName()));
                        if ($writeVersion) {
                            $packageViewData['version'] = $package->getFullPrettyVersion();
                            $versionLength = max($versionLength, strlen($package->getFullPrettyVersion()));
                        }
                        if ($writeLatest && $latestPackage) {
                            $packageViewData['latest'] = $latestPackage->getFullPrettyVersion();
                            $packageViewData['latest-status'] = $this->getUpdateStatus($latestPackage, $package);
                            $latestLength = max($latestLength, strlen($latestPackage->getFullPrettyVersion()));
                        }
                        if ($writeDescription && $package instanceof CompletePackageInterface) {
                            $packageViewData['description'] = $package->getDescription();
                        }
                        if ($writePath) {
                            $packageViewData['path'] = strtok(realpath($composer->getInstallationManager()->getInstallPath($package)), "\r\n");
                        }

if ($latestPackage instanceof CompletePackageInterface && $latestPackage->isAbandoned()) {
                            $replacement = is_string($latestPackage->getReplacementPackage())
                                ? 'Use ' . $latestPackage->getReplacementPackage() . ' instead'
                                : 'No replacement was suggested';
                            $packageWarning = sprintf(
                                'Package %s is abandoned, you should avoid using it. %s.',
                                $package->getPrettyName(),
                                $replacement
                            );
                            $packageViewData['warning'] = $packageWarning;
                        }
                    } else {
                        $packageViewData['name'] = $package;
                        $nameLength = max($nameLength, strlen($package));
                    }
                    $viewData[$type][] = $packageViewData;
                }
                $viewMetaData[$type] = array(
                    'nameLength' => $nameLength,
                    'versionLength' => $versionLength,
                    'latestLength' => $latestLength,
                );
                if ($input->getOption('strict') && $hasOutdatedPackages) {
                    $exitCode = 1;
                    break;
                }
            }
        }

if ('json' === $format) {
            $io->write(JsonFile::encode($viewData));
        } else {
            if ($input->getOption('latest') && array_filter($viewData)) {
                if (!$io->isDecorated()) {
                    $io->writeError('Legend:');
                    $io->writeError('! patch or minor release available - update recommended');
                    $io->writeError('~ major release available - update possible');
                    if (!$input->getOption('outdated')) {
                        $io->writeError('= up to date version');
                    }
                } else {
                    $io->writeError('<info>Color legend:</info>');
                    $io->writeError('- <highlight>patch or minor</highlight> release available - update recommended');
                    $io->writeError('- <comment>major</comment> release available - update possible');
                    if (!$input->getOption('outdated')) {
                        $io->writeError('- <info>up to date</info> version');
                    }
                }
            }

$width = $this->getTerminalWidth();

foreach ($viewData as $type => $packages) {
                $nameLength = $viewMetaData[$type]['nameLength'];
                $versionLength = $viewMetaData[$type]['versionLength'];
                $latestLength = $viewMetaData[$type]['latestLength'];

$writeVersion = $nameLength + $versionLength + 3 <= $width;
                $writeLatest = $nameLength + $versionLength + $latestLength + 3 <= $width;
                $writeDescription = $nameLength + $versionLength + $latestLength + 24 <= $width;

if ($writeLatest && !$io->isDecorated()) {
                    $latestLength += 2;
                }

if ($showAllTypes) {
                    if ('available' === $type) {
                        $io->write('<comment>' . $type . '</comment>:');
                    } else {
                        $io->write('<info>' . $type . '</info>:');
                    }
                }

foreach ($packages as $package) {
                    $io->write($indent . str_pad($package['name'], $nameLength, ' '), false);
                    if (isset($package['version']) && $writeVersion) {
                        $io->write(' ' . str_pad($package['version'], $versionLength, ' '), false);
                    }
                    if (isset($package['latest']) && $writeLatest) {
                        $latestVersion = $package['latest'];
                        $updateStatus = $package['latest-status'];
                        $style = $this->updateStatusToVersionStyle($updateStatus);
                        if (!$io->isDecorated()) {
                            $latestVersion = str_replace(array('up-to-date', 'semver-safe-update', 'update-possible'), array('=', '!', '~'), $updateStatus) . ' ' . $latestVersion;
                        }
                        $io->write(' <' . $style . '>' . str_pad($latestVersion, $latestLength, ' ') . '</' . $style . '>', false);
                    }
                    if (isset($package['description']) && $writeDescription) {
                        $description = strtok($package['description'], "\r\n");
                        $remaining = $width - $nameLength - $versionLength - 4;
                        if ($writeLatest) {
                            $remaining -= $latestLength;
                        }
                        if (strlen($description) > $remaining) {
                            $description = substr($description, 0, $remaining - 3) . '...';
                        }
                        $io->write(' ' . $description, false);
                    }
                    if (isset($package['path'])) {
                        $io->write(' ' . $package['path'], false);
                    }
                    $io->write('');
                    if (isset($package['warning'])) {
                        $io->write('<warning>' . $package['warning'] . '</warning>');
                    }
                }

if ($showAllTypes) {
                    $io->write('');
                }
            }
        }

return $exitCode;
    }

/**
     * @return string[]
     */
    protected function getRootRequires()
    {
        $rootPackage = $this->getComposer()->getPackage();

return array_map(
            'strtolower',
            array_keys(array_merge($rootPackage->getRequires(), $rootPackage->getDevRequires()))
        );
    }

/**
     * @return array|string|string[]
     */
    protected function getVersionStyle(PackageInterface $latestPackage, PackageInterface $package)
    {
        return $this->updateStatusToVersionStyle($this->getUpdateStatus($latestPackage, $package));
    }

/**
     * finds a package by name and version if provided
     *
     * @param  string                     $name
     * @param  ConstraintInterface|string $version
     * @throws \InvalidArgumentException
     * @return array{CompletePackageInterface|null, array<string, string>}
     */
    protected function getPackage(InstalledRepository $installedRepo, RepositoryInterface $repos, $name, $version = null)
    {
        $name = strtolower($name);
        $constraint = is_string($version) ? $this->versionParser->parseConstraints($version) : $version;

$policy = new DefaultPolicy();
        $repositorySet = new RepositorySet('dev');
        $repositorySet->allowInstalledRepositories();
        $repositorySet->addRepository($repos);

$matchedPackage = null;
        $versions = array();
        if (PlatformRepository::isPlatformPackage($name)) {
            $pool = $repositorySet->createPoolWithAllPackages();
        } else {
            $pool = $repositorySet->createPoolForPackage($name);
        }
        $matches = $pool->whatProvides($name, $constraint);
        foreach ($matches as $index => $package) {
            // avoid showing the 9999999-dev alias if the default branch has no branch-alias set
            if ($package instanceof AliasPackage && $package->getVersion() === VersionParser::DEFAULT_BRANCH_ALIAS) {
                $package = $package->getAliasOf();
            }

// select an exact match if it is in the installed repo and no specific version was required
            if (null === $version && $installedRepo->hasPackage($package)) {
                $matchedPackage = $package;
            }

$versions[$package->getPrettyVersion()] = $package->getVersion();
            $matches[$index] = $package->getId();
        }

// select preferred package according to policy rules
        if (!$matchedPackage && $matches && $preferred = $policy->selectPreferredPackages($pool, $matches)) {
            $matchedPackage = $pool->literalToPackage($preferred[0]);
        }

return array($matchedPackage, $versions);
    }

/**
     * Prints package info.
     *
     * @param array<string, string>    $versions
     * @param PackageInterface|null    $latestPackage
     *
     * @return void
     */
    protected function printPackageInfo(CompletePackageInterface $package, array $versions, InstalledRepository $installedRepo, PackageInterface $latestPackage = null)
    {
        $io = $this->getIO();

$this->printMeta($package, $versions, $installedRepo, $latestPackage ?: null);
        $this->printLinks($package, Link::TYPE_REQUIRE);
        $this->printLinks($package, Link::TYPE_DEV_REQUIRE, 'requires (dev)');

if ($package->getSuggests()) {
            $io->write("\n<info>suggests</info>");
            foreach ($package->getSuggests() as $suggested => $reason) {
                $io->write($suggested . ' <comment>' . $reason . '</comment>');
            }
        }

$this->printLinks($package, Link::TYPE_PROVIDE);
        $this->printLinks($package, Link::TYPE_CONFLICT);
        $this->printLinks($package, Link::TYPE_REPLACE);
    }

/**
     * Prints package metadata.
     *
     * @param array<string, string>    $versions
     * @param PackageInterface|null    $latestPackage
     *
     * @return void
     */
    protected function printMeta(CompletePackageInterface $package, array $versions, InstalledRepository $installedRepo, PackageInterface $latestPackage = null)
    {
        $io = $this->getIO();
        $io->write('<info>name</info>     : ' . $package->getPrettyName());
        $io->write('<info>descrip.</info> : ' . $package->getDescription());
        $io->write('<info>keywords</info> : ' . implode(', ', $package->getKeywords() ?: array()));
        $this->printVersions($package, $versions, $installedRepo);
        if ($latestPackage) {
            $style = $this->getVersionStyle($latestPackage, $package);
            $io->write('<info>latest</info>   : <'.$style.'>' . $latestPackage->getPrettyVersion() . '</'.$style.'>');
        } else {
            $latestPackage = $package;
        }
        $io->write('<info>type</info>     : ' . $package->getType());
        $this->printLicenses($package);
        $io->write('<info>homepage</info> : ' . $package->getHomepage());
        $io->write('<info>source</info>   : ' . sprintf('[%s] <comment>%s</comment> %s', $package->getSourceType(), $package->getSourceUrl(), $package->getSourceReference()));
        $io->write('<info>dist</info>     : ' . sprintf('[%s] <comment>%s</comment> %s', $package->getDistType(), $package->getDistUrl(), $package->getDistReference()));
        if ($installedRepo->hasPackage($package)) {
            $io->write('<info>path</info>     : ' . sprintf('%s', realpath($this->getComposer()->getInstallationManager()->getInstallPath($package))));
        }
        $io->write('<info>names</info>    : ' . implode(', ', $package->getNames()));

if ($latestPackage instanceof CompletePackageInterface && $latestPackage->isAbandoned()) {
            $replacement = ($latestPackage->getReplacementPackage() !== null)
                ? ' The author suggests using the ' . $latestPackage->getReplacementPackage(). ' package instead.'
                : null;

$io->writeError(
                sprintf('<warning>Attention: This package is abandoned and no longer maintained.%s</warning>', $replacement)
            );
        }

if ($package->getSupport()) {
            $io->write("\n<info>support</info>");
            foreach ($package->getSupport() as $type => $value) {
                $io->write('<comment>' . $type . '</comment> : '.$value);
            }
        }

if ($package->getAutoload()) {
            $io->write("\n<info>autoload</info>");
            $autoloadConfig = $package->getAutoload();
            foreach ($autoloadConfig as $type => $autoloads) {
                $io->write('<comment>' . $type . '</comment>');

if ($type === 'psr-0' || $type === 'psr-4') {
                    foreach ($autoloads as $name => $path) {
                        $io->write(($name ?: '*') . ' => ' . (is_array($path) ? implode(', ', $path) : ($path ?: '.')));
                    }
                } elseif ($type === 'classmap') {
                    $io->write(implode(', ', $autoloadConfig[$type]));
                }
            }
            if ($package->getIncludePaths()) {
                $io->write('<comment>include-path</comment>');
                $io->write(implode(', ', $package->getIncludePaths()));
            }
        }
    }

/**
     * Prints all available versions of this package and highlights the installed one if any.
     *
     * @param array<string, string> $versions
     *
     * @return void
     */
    protected function printVersions(CompletePackageInterface $package, array $versions, InstalledRepository $installedRepo)
    {
        $versions = array_keys($versions);
        $versions = Semver::rsort($versions);

// highlight installed version
        if ($installedPackages = $installedRepo->findPackages($package->getName())) {
            foreach ($installedPackages as $installedPackage) {
                $installedVersion = $installedPackage->getPrettyVersion();
                $key = array_search($installedVersion, $versions);
                if (false !== $key) {
                    $versions[$key] = '<info>* ' . $installedVersion . '</info>';
                }
            }
        }

$versions = implode(', ', $versions);

$this->getIO()->write('<info>versions</info> : ' . $versions);
    }

/**
     * print link objects
     *
     * @param string                   $linkType
     * @param string                   $title
     *
     * @return void
     */
    protected function printLinks(CompletePackageInterface $package, $linkType, $title = null)
    {
        $title = $title ?: $linkType;
        $io = $this->getIO();
        if ($links = $package->{'get'.ucfirst($linkType)}()) {
            $io->write("\n<info>" . $title . "</info>");

foreach ($links as $link) {
                $io->write($link->getTarget() . ' <comment>' . $link->getPrettyConstraint() . '</comment>');
            }
        }
    }

/**
     * Prints the licenses of a package with metadata
     *
     * @return void
     */
    protected function printLicenses(CompletePackageInterface $package)
    {
        $spdxLicenses = new SpdxLicenses();

$licenses = $package->getLicense();
        $io = $this->getIO();

foreach ($licenses as $licenseId) {
            $license = $spdxLicenses->getLicenseByIdentifier($licenseId); // keys: 0 fullname, 1 osi, 2 url

if (!$license) {
                $out = $licenseId;
            } else {
                // is license OSI approved?
                if ($license[1] === true) {
                    $out = sprintf('%s (%s) (OSI approved) %s', $license[0], $licenseId, $license[2]);
                } else {
                    $out = sprintf('%s (%s) %s', $license[0], $licenseId, $license[2]);
                }
            }

$io->write('<info>license</info>  : ' . $out);
        }
    }

/**
     * Prints package info in JSON format.
     *
     * @param array<string, string>    $versions
     *
     * @return void
     */
    protected function printPackageInfoAsJson(CompletePackageInterface $package, array $versions, InstalledRepository $installedRepo, PackageInterface $latestPackage = null)
    {
        $json = array(
            'name' => $package->getPrettyName(),
            'description' => $package->getDescription(),
            'keywords' => $package->getKeywords() ?: array(),
            'type' => $package->getType(),
            'homepage' => $package->getHomepage(),
            'names' => $package->getNames(),
        );

$json = $this->appendVersions($json, $versions);
        $json = $this->appendLicenses($json, $package);

if ($latestPackage) {
            $json['latest'] = $latestPackage->getPrettyVersion();
        } else {
            $latestPackage = $package;
        }

if ($package->getSourceType()) {
            $json['source'] = array(
                'type' => $package->getSourceType(),
                'url' => $package->getSourceUrl(),
                'reference' => $package->getSourceReference(),
            );
        }

if ($package->getDistType()) {
            $json['dist'] = array(
                'type' => $package->getDistType(),
                'url' => $package->getDistUrl(),
                'reference' => $package->getDistReference(),
            );
        }

if ($installedRepo->hasPackage($package)) {
            $json['path'] = realpath($this->getComposer()->getInstallationManager()->getInstallPath($package));
            if ($json['path'] === false) {
                unset($json['path']);
            }
        }

if ($latestPackage instanceof CompletePackageInterface && $latestPackage->isAbandoned()) {
            $json['replacement'] = $latestPackage->getReplacementPackage();
        }

if ($package->getSuggests()) {
            $json['suggests'] = $package->getSuggests();
        }

if ($package->getSupport()) {
            $json['support'] = $package->getSupport();
        }

$json = $this->appendAutoload($json, $package);

if ($package->getIncludePaths()) {
            $json['include_path'] = $package->getIncludePaths();
        }

$json = $this->appendLinks($json, $package);

$this->getIO()->write(JsonFile::encode($json));
    }

/**
     * @param array<string, string|string[]|null> $json
     * @param array<string, string> $versions
     * @return array<string, string|string[]|null>
     */
    private function appendVersions($json, array $versions)
    {
        uasort($versions, 'version_compare');
        $versions = array_keys(array_reverse($versions));
        $json['versions'] = $versions;

return $json;
    }

/**
     * @param array<string, string|string[]|null> $json
     * @return array<string, string|string[]|null>
     */
    private function appendLicenses($json, CompletePackageInterface $package)
    {
        if ($licenses = $package->getLicense()) {
            $spdxLicenses = new SpdxLicenses();

$json['licenses'] = array_map(function ($licenseId) use ($spdxLicenses) {
                $license = $spdxLicenses->getLicenseByIdentifier($licenseId); // keys: 0 fullname, 1 osi, 2 url

if (!$license) {
                    return $licenseId;
                }

return array(
                    'name' => $license[0],
                    'osi' => $licenseId,
                    'url' => $license[2],
                );
            }, $licenses);
        }

return $json;
    }

/**
     * @param array<string, string|string[]|null> $json
     * @return array<string, string|string[]|null>
     */
    private function appendAutoload($json, CompletePackageInterface $package)
    {
        if ($package->getAutoload()) {
            $autoload = array();

foreach ($package->getAutoload() as $type => $autoloads) {
                if ($type === 'psr-0' || $type === 'psr-4') {
                    $psr = array();

foreach ($autoloads as $name => $path) {
                        if (!$path) {
                            $path = '.';
                        }

$psr[$name ?: '*'] = $path;
                    }

$autoload[$type] = $psr;
                } elseif ($type === 'classmap') {
                    $autoload['classmap'] = $autoloads;
                }
            }

$json['autoload'] = $autoload;
        }

return $json;
    }

/**
     * @param array<string, string|string[]|null> $json
     * @return array<string, string|string[]|null>
     */
    private function appendLinks($json, CompletePackageInterface $package)
    {
        foreach (Link::$TYPES as $linkType) {
            $json = $this->appendLink($json, $package, $linkType);
        }

return $json;
    }

/**
     * @param array<string, string|string[]|null> $json
     * @param string $linkType
     * @return array<string, string|string[]|null>
     */
    private function appendLink($json, CompletePackageInterface $package, $linkType)
    {
        $links = $package->{'get' . ucfirst($linkType)}();

if ($links) {
            $json[$linkType] = array();

foreach ($links as $link) {
                $json[$linkType][$link->getTarget()] = $link->getPrettyConstraint();
            }
        }

return $json;
    }

/**
     * Init styles for tree
     *
     * @return void
     */
    protected function initStyles(OutputInterface $output)
    {
        $this->colors = array(
            'green',
            'yellow',
            'cyan',
            'magenta',
            'blue',
        );

foreach ($this->colors as $color) {
            $style = new OutputFormatterStyle($color);
            $output->getFormatter()->setStyle($color, $style);
        }
    }

/**
     * Display the tree
     *
     * @param array<int, array<string, string|mixed[]>> $arrayTree
     * @return void
     */
    protected function displayPackageTree(array $arrayTree)
    {
        $io = $this->getIO();
        foreach ($arrayTree as $package) {
            $io->write(sprintf('<info>%s</info>', $package['name']), false);
            $io->write(' ' . $package['version'], false);
            $io->write(' ' . strtok($package['description'], "\r\n"));

if (isset($package['requires'])) {
                $requires = $package['requires'];
                $treeBar = '├';
                $j = 0;
                $total = count($requires);
                foreach ($requires as $require) {
                    $requireName = $require['name'];
                    $j++;
                    if ($j === $total) {
                        $treeBar = '└';
                    }
                    $level = 1;
                    $color = $this->colors[$level];
                    $info = sprintf(
                        '%s──<%s>%s</%s> %s',
                        $treeBar,
                        $color,
                        $requireName,
                        $color,
                        $require['version']
                    );
                    $this->writeTreeLine($info);

$treeBar = str_replace('└', ' ', $treeBar);
                    $packagesInTree = array($package['name'], $requireName);

$this->displayTree($require, $packagesInTree, $treeBar, $level + 1);
                }
            }
        }
    }

/**
     * Generate the package tree
     *
     * @return array<string, array<int, array<string, mixed[]|string>>|string|null>
     */
    protected function generatePackageTree(
        PackageInterface $package,
        InstalledRepository $installedRepo,
        RepositoryInterface $remoteRepos
    ) {
        $requires = $package->getRequires();
        ksort($requires);
        $children = array();
        foreach ($requires as $requireName => $require) {
            $packagesInTree = array($package->getName(), $requireName);

$treeChildDesc = array(
                'name' => $requireName,
                'version' => $require->getPrettyConstraint(),
            );

$deepChildren = $this->addTree($requireName, $require, $installedRepo, $remoteRepos, $packagesInTree);

if ($deepChildren) {
                $treeChildDesc['requires'] = $deepChildren;
            }

$children[] = $treeChildDesc;
        }
        $tree = array(
            'name' => $package->getPrettyName(),
            'version' => $package->getPrettyVersion(),
            'description' => $package instanceof CompletePackageInterface ? $package->getDescription() : '',
        );

if ($children) {
            $tree['requires'] = $children;
        }

return $tree;
    }

/**
     * Display a package tree
     *
     * @param array<string, array<int, array<string, mixed[]|string>>|string|null>|string $package
     * @param array<int, string|mixed[]> $packagesInTree
     * @param string $previousTreeBar
     * @param int $level
     *
     * @return void
     */
    protected function displayTree(
        $package,
        array $packagesInTree,
        $previousTreeBar = '├',
        $level = 1
    ) {
        $previousTreeBar = str_replace('├', '│', $previousTreeBar);
        if (is_array($package) && isset($package['requires'])) {
            $requires = $package['requires'];
            $treeBar = $previousTreeBar . '  ├';
            $i = 0;
            $total = count($requires);
            foreach ($requires as $require) {
                $currentTree = $packagesInTree;
                $i++;
                if ($i === $total) {
                    $treeBar = $previousTreeBar . '  └';
                }
                $colorIdent = $level % count($this->colors);
                $color = $this->colors[$colorIdent];

$circularWarn = in_array(
                    $require['name'],
                    $currentTree,
                    true
                ) ? '(circular dependency aborted here)' : '';
                $info = rtrim(sprintf(
                    '%s──<%s>%s</%s> %s %s',
                    $treeBar,
                    $color,
                    $require['name'],
                    $color,
                    $require['version'],
                    $circularWarn
                ));
                $this->writeTreeLine($info);

$treeBar = str_replace('└', ' ', $treeBar);

$currentTree[] = $require['name'];
                $this->displayTree($require, $currentTree, $treeBar, $level + 1);
            }
        }
    }

/**
     * Display a package tree
     *
     * @param  string   $name
     * @param  string[] $packagesInTree
     * @return array<int, array<string, array<int, array<string, string>>|string>>
     */
    protected function addTree(
        $name,
        Link $link,
        InstalledRepository $installedRepo,
        RepositoryInterface $remoteRepos,
        array $packagesInTree
    ) {
        $children = array();
        list($package) = $this->getPackage(
            $installedRepo,
            $remoteRepos,
            $name,
            $link->getPrettyConstraint() === 'self.version' ? $link->getConstraint() : $link->getPrettyConstraint()
        );
        if (is_object($package)) {
            $requires = $package->getRequires();
            ksort($requires);
            foreach ($requires as $requireName => $require) {
                $currentTree = $packagesInTree;

$treeChildDesc = array(
                    'name' => $requireName,
                    'version' => $require->getPrettyConstraint(),
                );

if (!in_array($requireName, $currentTree, true)) {
                    $currentTree[] = $requireName;
                    $deepChildren = $this->addTree($requireName, $require, $installedRepo, $remoteRepos, $currentTree);
                    if ($deepChildren) {
                        $treeChildDesc['requires'] = $deepChildren;
                    }
                }

$children[] = $treeChildDesc;
            }
        }

return $children;
    }

/**
     * @param string $updateStatus
     * @return string
     */
    private function updateStatusToVersionStyle($updateStatus)
    {
        // 'up-to-date' is printed green
        // 'semver-safe-update' is printed red
        // 'update-possible' is printed yellow
        return str_replace(array('up-to-date', 'semver-safe-update', 'update-possible'), array('info', 'highlight', 'comment'), $updateStatus);
    }

/**
     * @return string
     */
    private function getUpdateStatus(PackageInterface $latestPackage, PackageInterface $package)
    {
        if ($latestPackage->getFullPrettyVersion() === $package->getFullPrettyVersion()) {
            return 'up-to-date';
        }

$constraint = $package->getVersion();
        if (0 !== strpos($constraint, 'dev-')) {
            $constraint = '^'.$constraint;
        }
        if ($latestPackage->getVersion() && Semver::satisfies($latestPackage->getVersion(), $constraint)) {
            // it needs an immediate semver-compliant upgrade
            return 'semver-safe-update';
        }

// it needs an upgrade but has potential BC breaks so is not urgent
        return 'update-possible';
    }

/**
     * @param string $line
     *
     * @return void
     */
    private function writeTreeLine($line)
    {
        $io = $this->getIO();
        if (!$io->isDecorated()) {
            $line = str_replace(array('└', '├', '──', '│'), array('`-', '|-', '-', '|'), $line);
        }

$io->write($line);
    }

/**
     * Given a package, this finds the latest package matching it
     *
     * @param bool $minorOnly
     * @param bool|string $ignorePlatformReqs
     *
     * @return PackageInterface|false
     */
    private function findLatestPackage(PackageInterface $package, Composer $composer, PlatformRepository $platformRepo, $minorOnly = false, $ignorePlatformReqs = false)
    {
        // find the latest version allowed in this repo set
        $name = $package->getName();
        $versionSelector = new VersionSelector($this->getRepositorySet($composer), $platformRepo);
        $stability = $composer->getPackage()->getMinimumStability();
        $flags = $composer->getPackage()->getStabilityFlags();
        if (isset($flags[$name])) {
            $stability = array_search($flags[$name], BasePackage::$stabilities, true);
        }

$bestStability = $stability;
        if ($composer->getPackage()->getPreferStable()) {
            $bestStability = $package->getStability();
        }

$targetVersion = null;
        if (0 === strpos($package->getVersion(), 'dev-')) {
            $targetVersion = $package->getVersion();
        }

if ($targetVersion === null && $minorOnly) {
            $targetVersion = '^' . $package->getVersion();
        }

$candidate = $versionSelector->findBestCandidate($name, $targetVersion, $bestStability, PlatformRequirementFilterFactory::fromBoolOrList($ignorePlatformReqs));
        while ($candidate instanceof AliasPackage) {
            $candidate = $candidate->getAliasOf();
        }

return $candidate;
    }

/**
     * @return RepositorySet
     */
    private function getRepositorySet(Composer $composer)
    {
        if (!$this->repositorySet) {
            $this->repositorySet = new RepositorySet($composer->getPackage()->getMinimumStability(), $composer->getPackage()->getStabilityFlags());
            $this->repositorySet->addRepository(new CompositeRepository($composer->getRepositoryManager()->getRepositories()));
        }

return $this->repositorySet;
    }

/**
     * Find package requires and child requires
     *
     * @param  array<PackageInterface> $bucket
     * @return array<PackageInterface>
     */
    private function filterRequiredPackages(RepositoryInterface $repo, PackageInterface $package, $bucket = array())
    {
        $requires = $package->getRequires();

foreach ($repo->getPackages() as $candidate) {
            foreach ($candidate->getNames() as $name) {
                if (isset($requires[$name])) {
                    if (!in_array($candidate, $bucket, true)) {
                        $bucket[] = $candidate;
                        $bucket = $this->filterRequiredPackages($repo, $candidate, $bucket);
                    }
                    break;
                }
            }
        }

return $bucket;
    }
}
<?php

namespace Composer\Command;

use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;
use Composer\Downloader\ChangeReportInterface;
use Composer\Downloader\DvcsDownloaderInterface;
use Composer\Downloader\VcsCapableDownloaderInterface;
use Composer\Package\Dumper\ArrayDumper;
use Composer\Package\Version\VersionGuesser;
use Composer\Package\Version\VersionParser;
use Composer\Plugin\CommandEvent;
use Composer\Plugin\PluginEvents;
use Composer\Script\ScriptEvents;
use Composer\Util\ProcessExecutor;

/**
 * @author Tiago Ribeiro <tiago.ribeiro@seegno.com>
 * @author Rui Marinho <rui.marinho@seegno.com>
 */
class StatusCommand extends BaseCommand
{
    const EXIT_CODE_ERRORS = 1;
    const EXIT_CODE_UNPUSHED_CHANGES = 2;
    const EXIT_CODE_VERSION_CHANGES = 4;

/**
     * @return void
     * @throws \Symfony\Component\Console\Exception\InvalidArgumentException
     */
    protected function configure()
    {
        $this
            ->setName('status')
            ->setDescription('Shows a list of locally modified packages.')
            ->setDefinition(array(
                new InputOption('verbose', 'v|vv|vvv', InputOption::VALUE_NONE, 'Show modified files for each directory that contains changes.'),
            ))
            ->setHelp(
                <<<EOT
The status command displays a list of dependencies that have
been modified locally.

Read more at https://getcomposer.org/doc/03-cli.md#status
EOT
            )
        ;
    }

/**
     * @return int
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $composer = $this->getComposer();

$commandEvent = new CommandEvent(PluginEvents::COMMAND, 'status', $input, $output);
        $composer->getEventDispatcher()->dispatch($commandEvent->getName(), $commandEvent);

// Dispatch pre-status-command
        $composer->getEventDispatcher()->dispatchScript(ScriptEvents::PRE_STATUS_CMD, true);

$exitCode = $this->doExecute($input);

// Dispatch post-status-command
        $composer->getEventDispatcher()->dispatchScript(ScriptEvents::POST_STATUS_CMD, true);

return $exitCode;
    }

/**
     * @return int
     */
    private function doExecute(InputInterface $input)
    {
        // init repos
        $composer = $this->getComposer();

$installedRepo = $composer->getRepositoryManager()->getLocalRepository();

$dm = $composer->getDownloadManager();
        $im = $composer->getInstallationManager();

$errors = array();
        $io = $this->getIO();
        $unpushedChanges = array();
        $vcsVersionChanges = array();

$parser = new VersionParser;
        $guesser = new VersionGuesser($composer->getConfig(), new ProcessExecutor($io), $parser);
        $dumper = new ArrayDumper;

// list packages
        foreach ($installedRepo->getCanonicalPackages() as $package) {
            $downloader = $dm->getDownloaderForPackage($package);
            $targetDir = $im->getInstallPath($package);

if ($downloader instanceof ChangeReportInterface) {
                if (is_link($targetDir)) {
                    $errors[$targetDir] = $targetDir . ' is a symbolic link.';
                }

if ($changes = $downloader->getLocalChanges($package, $targetDir)) {
                    $errors[$targetDir] = $changes;
                }
            }

if ($downloader instanceof VcsCapableDownloaderInterface) {
                if ($downloader->getVcsReference($package, $targetDir)) {
                    switch ($package->getInstallationSource()) {
                        case 'source':
                            $previousRef = $package->getSourceReference();
                            break;
                        case 'dist':
                            $previousRef = $package->getDistReference();
                            break;
                        default:
                            $previousRef = null;
                    }

$currentVersion = $guesser->guessVersion($dumper->dump($package), $targetDir);

if ($previousRef && $currentVersion && $currentVersion['commit'] !== $previousRef) {
                        $vcsVersionChanges[$targetDir] = array(
                            'previous' => array(
                                'version' => $package->getPrettyVersion(),
                                'ref' => $previousRef,
                            ),
                            'current' => array(
                                'version' => $currentVersion['pretty_version'],
                                'ref' => $currentVersion['commit'],
                            ),
                        );
                    }
                }
            }

if ($downloader instanceof DvcsDownloaderInterface) {
                if ($unpushed = $downloader->getUnpushedChanges($package, $targetDir)) {
                    $unpushedChanges[$targetDir] = $unpushed;
                }
            }
        }

// output errors/warnings
        if (!$errors && !$unpushedChanges && !$vcsVersionChanges) {
            $io->writeError('<info>No local changes</info>');

return 0;
        }

if ($errors) {
            $io->writeError('<error>You have changes in the following dependencies:</error>');

foreach ($errors as $path => $changes) {
                if ($input->getOption('verbose')) {
                    $indentedChanges = implode("\n", array_map(function ($line) {
                        return '    ' . ltrim($line);
                    }, explode("\n", $changes)));
                    $io->write('<info>'.$path.'</info>:');
                    $io->write($indentedChanges);
                } else {
                    $io->write($path);
                }
            }
        }

if ($unpushedChanges) {
            $io->writeError('<warning>You have unpushed changes on the current branch in the following dependencies:</warning>');

foreach ($unpushedChanges as $path => $changes) {
                if ($input->getOption('verbose')) {
                    $indentedChanges = implode("\n", array_map(function ($line) {
                        return '    ' . ltrim($line);
                    }, explode("\n", $changes)));
                    $io->write('<info>'.$path.'</info>:');
                    $io->write($indentedChanges);
                } else {
                    $io->write($path);
                }
            }
        }

if ($vcsVersionChanges) {
            $io->writeError('<warning>You have version variations in the following dependencies:</warning>');

foreach ($vcsVersionChanges as $path => $changes) {
                if ($input->getOption('verbose')) {
                    // If we don't can't find a version, use the ref instead.
                    $currentVersion = $changes['current']['version'] ?: $changes['current']['ref'];
                    $previousVersion = $changes['previous']['version'] ?: $changes['previous']['ref'];

if ($io->isVeryVerbose()) {
                        // Output the ref regardless of whether or not it's being used as the version
                        $currentVersion .= sprintf(' (%s)', $changes['current']['ref']);
                        $previousVersion .= sprintf(' (%s)', $changes['previous']['ref']);
                    }

$io->write('<info>'.$path.'</info>:');
                    $io->write(sprintf('    From <comment>%s</comment> to <comment>%s</comment>', $previousVersion, $currentVersion));
                } else {
                    $io->write($path);
                }
            }
        }

if (($errors || $unpushedChanges || $vcsVersionChanges) && !$input->getOption('verbose')) {
            $io->writeError('Use --verbose (-v) to see a list of files');
        }

return ($errors ? self::EXIT_CODE_ERRORS : 0) + ($unpushedChanges ? self::EXIT_CODE_UNPUSHED_CHANGES : 0) + ($vcsVersionChanges ? self::EXIT_CODE_VERSION_CHANGES : 0);
    }
}
<?php

namespace Composer\Command;

use Composer\Json\JsonFile;
use Composer\Package\CompletePackageInterface;
use Composer\Plugin\CommandEvent;
use Composer\Plugin\PluginEvents;
use Composer\Package\PackageInterface;
use Composer\Repository\RepositoryInterface;
use Symfony\Component\Console\Helper\Table;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Style\SymfonyStyle;

/**
 * @author Benoît Merlet <benoit.merlet@gmail.com>
 */
class LicensesCommand extends BaseCommand
{
    /**
     * @return void
     */
    protected function configure()
    {
        $this
            ->setName('licenses')
            ->setDescription('Shows information about licenses of dependencies.')
            ->setDefinition(array(
                new InputOption('format', 'f', InputOption::VALUE_REQUIRED, 'Format of the output: text, json or summary', 'text'),
                new InputOption('no-dev', null, InputOption::VALUE_NONE, 'Disables search in require-dev packages.'),
            ))
            ->setHelp(
                <<<EOT
The license command displays detailed information about the licenses of
the installed dependencies.

Read more at https://getcomposer.org/doc/03-cli.md#licenses
EOT
            )
        ;
    }

/**
     * @return int
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $composer = $this->getComposer();

$commandEvent = new CommandEvent(PluginEvents::COMMAND, 'licenses', $input, $output);
        $composer->getEventDispatcher()->dispatch($commandEvent->getName(), $commandEvent);

$root = $composer->getPackage();
        $repo = $composer->getRepositoryManager()->getLocalRepository();

if ($input->getOption('no-dev')) {
            $packages = $this->filterRequiredPackages($repo, $root);
        } else {
            $packages = $this->appendPackages($repo->getPackages(), array());
        }

ksort($packages);
        $io = $this->getIO();

switch ($format = $input->getOption('format')) {
            case 'text':
                $io->write('Name: <comment>'.$root->getPrettyName().'</comment>');
                $io->write('Version: <comment>'.$root->getFullPrettyVersion().'</comment>');
                $io->write('Licenses: <comment>'.(implode(', ', $root->getLicense()) ?: 'none').'</comment>');
                $io->write('Dependencies:');
                $io->write('');

$table = new Table($output);
                $table->setStyle('compact');
                $tableStyle = $table->getStyle();
                if (method_exists($tableStyle, 'setVerticalBorderChars')) {
                    $tableStyle->setVerticalBorderChars('');
                } else {
                    // TODO remove in composer 2.2
                    // @phpstan-ignore-next-line
                    $tableStyle->setVerticalBorderChar('');
                }
                $tableStyle->setCellRowContentFormat('%s  ');
                $table->setHeaders(array('Name', 'Version', 'License'));
                foreach ($packages as $package) {
                    $table->addRow(array(
                        $package->getPrettyName(),
                        $package->getFullPrettyVersion(),
                        implode(', ', $package instanceof CompletePackageInterface ? $package->getLicense() : array()) ?: 'none',
                    ));
                }
                $table->render();
                break;

case 'json':
                $dependencies = array();
                foreach ($packages as $package) {
                    $dependencies[$package->getPrettyName()] = array(
                        'version' => $package->getFullPrettyVersion(),
                        'license' => $package instanceof CompletePackageInterface ? $package->getLicense() : array(),
                    );
                }

$io->write(JsonFile::encode(array(
                    'name' => $root->getPrettyName(),
                    'version' => $root->getFullPrettyVersion(),
                    'license' => $root->getLicense(),
                    'dependencies' => $dependencies,
                )));
                break;

case 'summary':
                $usedLicenses = array();
                foreach ($packages as $package) {
                    $license = $package instanceof CompletePackageInterface ? $package->getLicense() : array();
                    $licenseName = $license[0];
                    if (!isset($usedLicenses[$licenseName])) {
                        $usedLicenses[$licenseName] = 0;
                    }
                    $usedLicenses[$licenseName]++;
                }

// Sort licenses so that the most used license will appear first
                arsort($usedLicenses, SORT_NUMERIC);

$rows = array();
                foreach ($usedLicenses as $usedLicense => $numberOfDependencies) {
                    $rows[] = array($usedLicense, $numberOfDependencies);
                }

$symfonyIo = new SymfonyStyle($input, $output);
                $symfonyIo->table(
                    array('License', 'Number of dependencies'),
                    $rows
                );
                break;
            default:
                throw new \RuntimeException(sprintf('Unsupported format "%s".  See help for supported formats.', $format));
        }

return 0;
    }

/**
     * Find package requires and child requires
     *
     * @param  array<string, PackageInterface> $bucket
     * @return array<string, PackageInterface>
     */
    private function filterRequiredPackages(RepositoryInterface $repo, PackageInterface $package, $bucket = array())
    {
        $requires = array_keys($package->getRequires());

$packageListNames = array_keys($bucket);
        $packages = array_filter(
            $repo->getPackages(),
            function ($package) use ($requires, $packageListNames) {
                return in_array($package->getName(), $requires) && !in_array($package->getName(), $packageListNames);
            }
        );

$bucket = $this->appendPackages($packages, $bucket);

foreach ($packages as $package) {
            $bucket = $this->filterRequiredPackages($repo, $package, $bucket);
        }

return $bucket;
    }

/**
     * Adds packages to the package list
     *
     * @param  PackageInterface[]              $packages the list of packages to add
     * @param  array<string, PackageInterface> $bucket   the list to add packages to
     * @return array<string, PackageInterface>
     */
    public function appendPackages(array $packages, array $bucket)
    {
        foreach ($packages as $package) {
            $bucket[$package->getName()] = $package;
        }

return $bucket;
    }
}
<?php

namespace Composer\Command;

use Composer\Json\JsonFile;
use Composer\Package\AliasPackage;
use Composer\Package\BasePackage;
use Composer\Package\CompletePackageInterface;
use Composer\Pcre\Preg;
use Composer\Repository\CompositeRepository;
use Composer\Semver\Constraint\MatchAllConstraint;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * @author Nicolas Grekas <p@tchwork.com>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class FundCommand extends BaseCommand
{
    /**
     * @return void
     */
    protected function configure()
    {
        $this->setName('fund')
            ->setDescription('Discover how to help fund the maintenance of your dependencies.')
            ->setDefinition(array(
                new InputOption('format', 'f', InputOption::VALUE_REQUIRED, 'Format of the output: text or json', 'text'),
            ))
        ;
    }

/**
     * @return int
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $composer = $this->getComposer();

$repo = $composer->getRepositoryManager()->getLocalRepository();
        $remoteRepos = new CompositeRepository($composer->getRepositoryManager()->getRepositories());
        $fundings = array();

$packagesToLoad = array();
        foreach ($repo->getPackages() as $package) {
            if ($package instanceof AliasPackage) {
                continue;
            }
            $packagesToLoad[$package->getName()] = new MatchAllConstraint();
        }

// load all packages dev versions in parallel
        $result = $remoteRepos->loadPackages($packagesToLoad, array('dev' => BasePackage::STABILITY_DEV), array());

// collect funding data from default branches
        foreach ($result['packages'] as $package) {
            if (
                !$package instanceof AliasPackage
                && $package instanceof CompletePackageInterface
                && $package->isDefaultBranch()
                && $package->getFunding()
                && isset($packagesToLoad[$package->getName()])
            ) {
                $fundings = $this->insertFundingData($fundings, $package);
                unset($packagesToLoad[$package->getName()]);
            }
        }

// collect funding from installed packages if none was found in the default branch above
        foreach ($repo->getPackages() as $package) {
            if ($package instanceof AliasPackage || !isset($packagesToLoad[$package->getName()])) {
                continue;
            }

if ($package instanceof CompletePackageInterface && $package->getFunding()) {
                $fundings = $this->insertFundingData($fundings, $package);
            }
        }

ksort($fundings);

$io = $this->getIO();

return 1;
        }

if ($fundings && $format === 'text') {
            $prev = null;

$io->write('The following packages were found in your dependencies which publish funding information:');

foreach ($fundings as $vendor => $links) {
                $io->write('');
                $io->write(sprintf("<comment>%s</comment>", $vendor));
                foreach ($links as $url => $packages) {
                    $line = sprintf('  <info>%s</info>', implode(', ', $packages));

if ($prev !== $line) {
                        $io->write($line);
                        $prev = $line;
                    }

$io->write(sprintf('    %s', $url));
                }
            }

$io->write("");
            $io->write("Please consider following these links and sponsoring the work of package authors!");
            $io->write("Thank you!");
        } elseif ($format === 'json') {
            $io->write(JsonFile::encode($fundings));
        } else {
            $io->write("No funding links were found in your package dependencies. This doesn't mean they don't need your support!");
        }

return 0;
    }

/**
     * @param mixed[] $fundings
     * @return mixed[]
     */
    private function insertFundingData(array $fundings, CompletePackageInterface $package)
    {
        foreach ($package->getFunding() as $fundingOption) {
            list($vendor, $packageName) = explode('/', $package->getPrettyName());
            // ignore malformed funding entries
            if (empty($fundingOption['url'])) {
                continue;
            }
            $url = $fundingOption['url'];
            if (!empty($fundingOption['type']) && $fundingOption['type'] === 'github' && Preg::isMatch('{^https://github.com/([^/]+)$}', $url, $match)) {
                $url = 'https://github.com/sponsors/'.$match[1];
            }
            $fundings[$vendor][$url][] = $packageName;
        }

return $fundings;
    }
}
<?php

namespace Composer\Command;

use Composer\Package\Link;
use Composer\Semver\Constraint\Constraint;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;
use Composer\Repository\PlatformRepository;
use Composer\Repository\RootPackageRepository;
use Composer\Repository\InstalledRepository;

class CheckPlatformReqsCommand extends BaseCommand
{
    /**
     * @return void
     */
    protected function configure()
    {
        $this->setName('check-platform-reqs')
            ->setDescription('Check that platform requirements are satisfied.')
            ->setDefinition(array(
                new InputOption('no-dev', null, InputOption::VALUE_NONE, 'Disables checking of require-dev packages requirements.'),
                new InputOption('lock', null, InputOption::VALUE_NONE, 'Checks requirements only from the lock file, not from installed packages.'),
            ))
            ->setHelp(
                <<<EOT
Checks that your PHP and extensions versions match the platform requirements of the installed packages.

Unlike update/install, this command will ignore config.platform settings and check the real platform packages so you can be certain you have the required platform dependencies.

<info>php composer.phar check-platform-reqs</info>

EOT
            );
    }

/**
     * @return int
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $composer = $this->getComposer();

$requires = array();
        $removePackages = array();
        if ($input->getOption('lock')) {
            $this->getIO()->writeError('<info>Checking '.($input->getOption('no-dev') ? 'non-dev ' : '').'platform requirements using the lock file</info>');
            $installedRepo = $composer->getLocker()->getLockedRepository(!$input->getOption('no-dev'));
        } else {
            $installedRepo = $composer->getRepositoryManager()->getLocalRepository();
            // fallback to lockfile if installed repo is empty
            if (!$installedRepo->getPackages()) {
                $this->getIO()->writeError('<warning>No vendor dir present, checking '.($input->getOption('no-dev') ? 'non-dev ' : '').'platform requirements from the lock file</warning>');
                $installedRepo = $composer->getLocker()->getLockedRepository(!$input->getOption('no-dev'));
            } else {
                if ($input->getOption('no-dev')) {
                    $removePackages = $installedRepo->getDevPackageNames();
                }

$this->getIO()->writeError('<info>Checking '.($input->getOption('no-dev') ? 'non-dev ' : '').'platform requirements for packages in the vendor dir</info>');
            }
        }
        if (!$input->getOption('no-dev')) {
            $requires += $composer->getPackage()->getDevRequires();
        }

foreach ($requires as $require => $link) {
            $requires[$require] = array($link);
        }

$installedRepo = new InstalledRepository(array($installedRepo, new RootPackageRepository($composer->getPackage())));
        foreach ($installedRepo->getPackages() as $package) {
            if (in_array($package->getName(), $removePackages, true)) {
                continue;
            }
            foreach ($package->getRequires() as $require => $link) {
                $requires[$require][] = $link;
            }
        }

ksort($requires);

$installedRepo->addRepository(new PlatformRepository(array(), array()));

$results = array();
        $exitCode = 0;

/**
         * @var Link[] $links
         */
        foreach ($requires as $require => $links) {
            if (PlatformRepository::isPlatformPackage($require)) {
                $candidates = $installedRepo->findPackagesWithReplacersAndProviders($require);
                if ($candidates) {
                    $reqResults = array();
                    foreach ($candidates as $candidate) {
                        $candidateConstraint = null;
                        if ($candidate->getName() === $require) {
                            $candidateConstraint = new Constraint('=', $candidate->getVersion());
                            $candidateConstraint->setPrettyString($candidate->getPrettyVersion());
                        } else {
                            foreach (array_merge($candidate->getProvides(), $candidate->getReplaces()) as $link) {
                                if ($link->getTarget() === $require) {
                                    $candidateConstraint = $link->getConstraint();
                                    break;
                                }
                            }
                        }

// safety check for phpstan, but it should not be possible to get a candidate out of findPackagesWithReplacersAndProviders without a constraint matching $require
                        if (!$candidateConstraint) {
                            continue;
                        }

foreach ($links as $link) {
                            if (!$link->getConstraint()->matches($candidateConstraint)) {
                                $reqResults[] = array(
                                    $candidate->getName() === $require ? $candidate->getPrettyName() : $require,
                                    $candidateConstraint->getPrettyString(),
                                    $link,
                                    '<error>failed</error>'.($candidate->getName() === $require ? '' : ' <comment>provided by '.$candidate->getPrettyName().'</comment>'),
                                );

// skip to next candidate
                                continue 2;
                            }
                        }

$results[] = array(
                            $candidate->getName() === $require ? $candidate->getPrettyName() : $require,
                            $candidateConstraint->getPrettyString(),
                            null,
                            '<info>success</info>'.($candidate->getName() === $require ? '' : ' <comment>provided by '.$candidate->getPrettyName().'</comment>'),
                        );

// candidate matched, skip to next requirement
                        continue 2;
                    }

// show the first error from every failed candidate
                    $results = array_merge($results, $reqResults);
                    $exitCode = max($exitCode, 1);

continue;
                }

$results[] = array(
                    $require,
                    'n/a',
                    $links[0],
                    '<error>missing</error>',
                );

$exitCode = max($exitCode, 2);
            }
        }

$this->printTable($output, $results);

return $exitCode;
    }

/**
     * @param mixed[] $results
     *
     * @return void
     */
    protected function printTable(OutputInterface $output, $results)
    {
        $rows = array();
        foreach ($results as $result) {
            /**
             * @var Link|null $link
             */
            list($platformPackage, $version, $link, $status) = $result;
            $rows[] = array(
                $platformPackage,
                $version,
                $link ? sprintf('%s %s %s (%s)', $link->getSource(), $link->getDescription(), $link->getTarget(), $link->getPrettyConstraint()) : '',
                $status,
            );
        }

$this->renderTable($rows, $output);
    }
}
<?php

namespace Composer\Command;

use Composer\Factory;
use Composer\Pcre\Preg;
use Composer\Util\Filesystem;
use Composer\Util\Platform;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\StringInput;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class GlobalCommand extends BaseCommand
{
    /**
     * @return void
     */
    protected function configure()
    {
        $this
            ->setName('global')
            ->setDescription('Allows running commands in the global composer dir ($COMPOSER_HOME).')
            ->setDefinition(array(
                new InputArgument('command-name', InputArgument::REQUIRED, ''),
                new InputArgument('args', InputArgument::IS_ARRAY | InputArgument::OPTIONAL, ''),
            ))
            ->setHelp(
                <<<EOT
Use this command as a wrapper to run other Composer commands
within the global context of COMPOSER_HOME.

You can use this to install CLI utilities globally, all you need
is to add the COMPOSER_HOME/vendor/bin dir to your PATH env var.

COMPOSER_HOME is c:\Users\<user>\AppData\Roaming\Composer on Windows
and /home/<user>/.composer on unix systems.

If your system uses freedesktop.org standards, then it will first check
XDG_CONFIG_HOME or default to /home/<user>/.config/composer

Note: This path may vary depending on customizations to bin-dir in
composer.json or the environmental variable COMPOSER_BIN_DIR.

Read more at https://getcomposer.org/doc/03-cli.md#global
EOT
            )
        ;
    }

/**
     * @return int|void
     * @throws \Symfony\Component\Console\Exception\ExceptionInterface
     */
    public function run(InputInterface $input, OutputInterface $output)
    {
        if (!method_exists($input, '__toString')) {
            throw new \LogicException('Expected an Input instance that is stringable, got '.get_class($input));
        }

// extract real command name
        $tokens = Preg::split('{\s+}', $input->__toString());
        $args = array();
        foreach ($tokens as $token) {
            if ($token && $token[0] !== '-') {
                $args[] = $token;
                if (count($args) >= 2) {
                    break;
                }
            }
        }

// show help for this command if no command was found
        if (count($args) < 2) {
            return parent::run($input, $output);
        }

// The COMPOSER env var should not apply to the global execution scope
        if (Platform::getEnv('COMPOSER')) {
            Platform::clearEnv('COMPOSER');
        }

// change to global dir
        $config = Factory::createConfig();
        $home = $config->get('home');

if (!is_dir($home)) {
            $fs = new Filesystem();
            $fs->ensureDirectoryExists($home);
            if (!is_dir($home)) {
                throw new \RuntimeException('Could not create home directory');
            }
        }

try {
            chdir($home);
        } catch (\Exception $e) {
            throw new \RuntimeException('Could not switch to home directory "'.$home.'"', 0, $e);
        }
        $this->getIO()->writeError('<info>Changed current directory to '.$home.'</info>');

// create new input without "global" command prefix
        $input = new StringInput(Preg::replace('{\bg(?:l(?:o(?:b(?:a(?:l)?)?)?)?)?\b}', '', $input->__toString(), 1));
        $this->getApplication()->resetComposer();

return $this->getApplication()->run($input, $output);
    }

/**
     * @inheritDoc
     */
    public function isProxyCommand()
    {
        return true;
    }
}
<?php

namespace Composer\Command;

use Composer\Factory;
use Composer\IO\IOInterface;
use Composer\Config;
use Composer\Composer;
use Composer\Package\BasePackage;
use Composer\Package\CompletePackageInterface;
use Composer\Repository\CompositeRepository;
use Composer\Repository\RepositoryFactory;
use Composer\Script\ScriptEvents;
use Composer\Plugin\CommandEvent;
use Composer\Plugin\PluginEvents;
use Composer\Util\Filesystem;
use Composer\Util\Loop;
use Composer\Util\ProcessExecutor;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * Creates an archive of a package for distribution.
 *
 * @author Nils Adermann <naderman@naderman.de>
 */
class ArchiveCommand extends BaseCommand
{
    /**
     * @return void
     */
    protected function configure()
    {
        $this
            ->setName('archive')
            ->setDescription('Creates an archive of this composer package.')
            ->setDefinition(array(
                new InputArgument('package', InputArgument::OPTIONAL, 'The package to archive instead of the current project'),
                new InputArgument('version', InputArgument::OPTIONAL, 'A version constraint to find the package to archive'),
                new InputOption('format', 'f', InputOption::VALUE_REQUIRED, 'Format of the resulting archive: tar, tar.gz, tar.bz2 or zip (default tar)'),
                new InputOption('dir', null, InputOption::VALUE_REQUIRED, 'Write the archive to this directory'),
                new InputOption('file', null, InputOption::VALUE_REQUIRED, 'Write the archive with the given file name.'
                    .' Note that the format will be appended.'),
                new InputOption('ignore-filters', null, InputOption::VALUE_NONE, 'Ignore filters when saving package'),
            ))
            ->setHelp(
                <<<EOT
The <info>archive</info> command creates an archive of the specified format
containing the files and directories of the Composer project or the specified
package in the specified version and writes it to the specified directory.

<info>php composer.phar archive [--format=zip] [--dir=/foo] [package [version]]</info>

Read more at https://getcomposer.org/doc/03-cli.md#archive
EOT
            )
        ;
    }

protected function execute(InputInterface $input, OutputInterface $output)
    {
        $composer = $this->getComposer(false);
        $config = null;

if ($composer) {
            $config = $composer->getConfig();
            $commandEvent = new CommandEvent(PluginEvents::COMMAND, 'archive', $input, $output);
            $eventDispatcher = $composer->getEventDispatcher();
            $eventDispatcher->dispatch($commandEvent->getName(), $commandEvent);
            $eventDispatcher->dispatchScript(ScriptEvents::PRE_ARCHIVE_CMD);
        }

if (!$config) {
            $config = Factory::createConfig();
        }

if (null === $input->getOption('format')) {
            $input->setOption('format', $config->get('archive-format'));
        }
        if (null === $input->getOption('dir')) {
            $input->setOption('dir', $config->get('archive-dir'));
        }

$returnCode = $this->archive(
            $this->getIO(),
            $config,
            $input->getArgument('package'),
            $input->getArgument('version'),
            $input->getOption('format'),
            $input->getOption('dir'),
            $input->getOption('file'),
            $input->getOption('ignore-filters'),
            $composer
        );

if (0 === $returnCode && $composer) {
            $composer->getEventDispatcher()->dispatchScript(ScriptEvents::POST_ARCHIVE_CMD);
        }

return $returnCode;
    }

/**
     * @param string|null $packageName
     * @param string|null $version
     * @param string $format
     * @param string $dest
     * @param string|null $fileName
     * @param bool $ignoreFilters
     *
     * @return int
     * @throws \Exception
     */
    protected function archive(IOInterface $io, Config $config, $packageName = null, $version = null, $format = 'tar', $dest = '.', $fileName = null, $ignoreFilters = false, Composer $composer = null)
    {
        if ($composer) {
            $archiveManager = $composer->getArchiveManager();
        } else {
            $factory = new Factory;
            $process = new ProcessExecutor();
            $httpDownloader = Factory::createHttpDownloader($io, $config);
            $downloadManager = $factory->createDownloadManager($io, $config, $httpDownloader, $process);
            $archiveManager = $factory->createArchiveManager($config, $downloadManager, new Loop($httpDownloader, $process));
        }

if ($packageName) {
            $package = $this->selectPackage($io, $packageName, $version);

if (!$package) {
                return 1;
            }
        } else {
            $package = $this->getComposer()->getPackage();
        }

$io->writeError('<info>Creating the archive into "'.$dest.'".</info>');
        $packagePath = $archiveManager->archive($package, $format, $dest, $fileName, $ignoreFilters);
        $fs = new Filesystem;
        $shortPath = $fs->findShortestPath(getcwd(), $packagePath, true);

$io->writeError('Created: ', false);
        $io->write(strlen($shortPath) < strlen($packagePath) ? $shortPath : $packagePath);

return 0;
    }

/**
     * @param string      $packageName
     * @param string|null $version
     *
     * @return (BasePackage&CompletePackageInterface)|false
     */
    protected function selectPackage(IOInterface $io, $packageName, $version = null)
    {
        $io->writeError('<info>Searching for the specified package.</info>');

if ($composer = $this->getComposer(false)) {
            $localRepo = $composer->getRepositoryManager()->getLocalRepository();
            $repo = new CompositeRepository(array_merge(array($localRepo), $composer->getRepositoryManager()->getRepositories()));
        } else {
            $defaultRepos = RepositoryFactory::defaultRepos($this->getIO());
            $io->writeError('No composer.json found in the current directory, searching packages from ' . implode(', ', array_keys($defaultRepos)));
            $repo = new CompositeRepository($defaultRepos);
        }

$packages = $repo->findPackages($packageName, $version);

if (count($packages) > 1) {
            $package = reset($packages);
            $io->writeError('<info>Found multiple matches, selected '.$package->getPrettyString().'.</info>');
            $io->writeError('Alternatives were '.implode(', ', array_map(function ($p) {
                return $p->getPrettyString();
            }, $packages)).'.');
            $io->writeError('<comment>Please use a more specific constraint to pick a different package.</comment>');
        } elseif ($packages) {
            $package = reset($packages);
            $io->writeError('<info>Found an exact match '.$package->getPrettyString().'.</info>');
        } else {
            $io->writeError('<error>Could not find a package matching '.$packageName.'.</error>');

return false;
        }

if (!$package instanceof CompletePackageInterface) {
            throw new \LogicException('Expected a CompletePackageInterface instance but found '.get_class($package));
        }

return $package;
    }
}
<?php

namespace Composer\Command;

use Composer\Composer;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class AboutCommand extends BaseCommand
{
    /**
     * @return void
     */
    protected function configure()
    {
        $this
            ->setName('about')
            ->setDescription('Shows a short information about Composer.')
            ->setHelp(
                <<<EOT
<info>php composer.phar about</info>
EOT
            )
        ;
    }

protected function execute(InputInterface $input, OutputInterface $output)
    {
        $composerVersion = Composer::getVersion();

$this->getIO()->write(
            <<<EOT
<info>Composer - Dependency Manager for PHP - version $composerVersion</info>
<comment>Composer is a dependency manager tracking local dependencies of your projects and libraries.
See https://getcomposer.org/ for more information.</comment>
EOT
        );

return 0;
    }
}
<?php

namespace Composer\Command;

use Composer\Composer;
use Composer\Factory;
use Composer\Config;
use Composer\Pcre\Preg;
use Composer\Util\Filesystem;
use Composer\Util\Platform;
use Composer\SelfUpdate\Keys;
use Composer\SelfUpdate\Versions;
use Composer\IO\IOInterface;
use Composer\Downloader\FilesystemException;
use Composer\Downloader\TransportException;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Finder\Finder;

/**
 * @author Igor Wiedler <igor@wiedler.ch>
 * @author Kevin Ran <kran@adobe.com>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class SelfUpdateCommand extends BaseCommand
{
    const HOMEPAGE = 'getcomposer.org';
    const OLD_INSTALL_EXT = '-old.phar';

/**
     * @return void
     */
    protected function configure()
    {
        $this
            ->setName('self-update')
            ->setAliases(array('selfupdate'))
            ->setDescription('Updates composer.phar to the latest version.')
            ->setDefinition(array(
                new InputOption('rollback', 'r', InputOption::VALUE_NONE, 'Revert to an older installation of composer'),
                new InputOption('clean-backups', null, InputOption::VALUE_NONE, 'Delete old backups during an update. This makes the current version of composer the only backup available after the update'),
                new InputArgument('version', InputArgument::OPTIONAL, 'The version to update to'),
                new InputOption('no-progress', null, InputOption::VALUE_NONE, 'Do not output download progress.'),
                new InputOption('update-keys', null, InputOption::VALUE_NONE, 'Prompt user for a key update'),
                new InputOption('stable', null, InputOption::VALUE_NONE, 'Force an update to the stable channel'),
                new InputOption('preview', null, InputOption::VALUE_NONE, 'Force an update to the preview channel'),
                new InputOption('snapshot', null, InputOption::VALUE_NONE, 'Force an update to the snapshot channel'),
                new InputOption('1', null, InputOption::VALUE_NONE, 'Force an update to the stable channel, but only use 1.x versions'),
                new InputOption('2', null, InputOption::VALUE_NONE, 'Force an update to the stable channel, but only use 2.x versions'),
                new InputOption('set-channel-only', null, InputOption::VALUE_NONE, 'Only store the channel as the default one and then exit'),
            ))
            ->setHelp(
                <<<EOT
The <info>self-update</info> command checks getcomposer.org for newer
versions of composer and if found, installs the latest.

<info>php composer.phar self-update</info>

Read more at https://getcomposer.org/doc/03-cli.md#self-update-selfupdate-
EOT
            )
        ;
    }

/**
     * @return int
     * @throws FilesystemException
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        // trigger autoloading of a few classes which may be needed when verifying/swapping the phar file
        // to ensure we do not try to load them from the new phar, see https://github.com/composer/composer/issues/10252
        class_exists('Composer\Util\Platform');
        class_exists('Composer\Downloader\FilesystemException');

$config = Factory::createConfig();

if ($config->get('disable-tls') === true) {
            $baseUrl = 'http://' . self::HOMEPAGE;
        } else {
            $baseUrl = 'https://' . self::HOMEPAGE;
        }

$io = $this->getIO();
        $httpDownloader = Factory::createHttpDownloader($io, $config);

$versionsUtil = new Versions($config, $httpDownloader);

// switch channel if requested
        $requestedChannel = null;
        foreach (Versions::$channels as $channel) {
            if ($input->getOption($channel)) {
                $requestedChannel = $channel;
                $versionsUtil->setChannel($channel);
                break;
            }
        }

if ($input->getOption('set-channel-only')) {
            return 0;
        }

$cacheDir = $config->get('cache-dir');
        $rollbackDir = $config->get('data-dir');
        $home = $config->get('home');
        $localFilename = realpath($_SERVER['argv'][0]) ?: $_SERVER['argv'][0];

if ($input->getOption('update-keys')) {
            $this->fetchKeys($io, $config);

return 0;
        }

// ensure composer.phar location is accessible
        if (!file_exists($localFilename)) {
            throw new FilesystemException('Composer update failed: the "'.$localFilename.'" is not accessible');
        }

// check if current dir is writable and if not try the cache dir from settings
        $tmpDir = is_writable(dirname($localFilename)) ? dirname($localFilename) : $cacheDir;

// check for permissions in local filesystem before start connection process
        if (!is_writable($tmpDir)) {
            throw new FilesystemException('Composer update failed: the "'.$tmpDir.'" directory used to download the temp file could not be written');
        }

// check if composer is running as the same user that owns the directory root, only if POSIX is defined and callable
        if (function_exists('posix_getpwuid') && function_exists('posix_geteuid')) {
            $composeUser = posix_getpwuid(posix_geteuid());
            $homeOwner = posix_getpwuid(fileowner($home));
            if (isset($composeUser['name'], $homeOwner['name']) && $composeUser['name'] !== $homeOwner['name']) {
                $io->writeError('<warning>You are running Composer as "'.$composeUser['name'].'", while "'.$home.'" is owned by "'.$homeOwner['name'].'"</warning>');
            }
        }

if ($input->getOption('rollback')) {
            return $this->rollback($output, $rollbackDir, $localFilename);
        }

$latest = $versionsUtil->getLatest();
        $latestStable = $versionsUtil->getLatest('stable');
        try {
            $latestPreview = $versionsUtil->getLatest('preview');
        } catch (\UnexpectedValueException $e) {
            $latestPreview = $latestStable;
        }
        $latestVersion = $latest['version'];
        $updateVersion = $input->getArgument('version') ?: $latestVersion;
        $currentMajorVersion = Preg::replace('{^(\d+).*}', '$1', Composer::getVersion());
        $updateMajorVersion = Preg::replace('{^(\d+).*}', '$1', $updateVersion);
        $previewMajorVersion = Preg::replace('{^(\d+).*}', '$1', $latestPreview['version']);

if ($versionsUtil->getChannel() === 'stable' && !$input->getArgument('version')) {
            // if requesting stable channel and no specific version, avoid automatically upgrading to the next major
            // simply output a warning that the next major stable is available and let users upgrade to it manually
            if ($currentMajorVersion < $updateMajorVersion) {
                $skippedVersion = $updateVersion;

$versionsUtil->setChannel($currentMajorVersion);

$latest = $versionsUtil->getLatest();
                $latestStable = $versionsUtil->getLatest('stable');
                $latestVersion = $latest['version'];
                $updateVersion = $latestVersion;

$io->writeError('<warning>A new stable major version of Composer is available ('.$skippedVersion.'), run "composer self-update --'.$updateMajorVersion.'" to update to it. See also https://getcomposer.org/'.$updateMajorVersion.'</warning>');
            } elseif ($currentMajorVersion < $previewMajorVersion) {
                // promote next major version if available in preview
                $io->writeError('<warning>A preview release of the next major version of Composer is available ('.$latestPreview['version'].'), run "composer self-update --preview" to give it a try. See also https://github.com/composer/composer/releases for changelogs.</warning>');
            }
        }

if ($requestedChannel && is_numeric($requestedChannel) && strpos($latestStable['version'], $requestedChannel) !== 0) {
            $io->writeError('<warning>Warning: You forced the install of '.$latestVersion.' via --'.$requestedChannel.', but '.$latestStable['version'].' is the latest stable version. Updating to it via composer self-update --stable is recommended.</warning>');
        }

if (Preg::isMatch('{^[0-9a-f]{40}$}', $updateVersion) && $updateVersion !== $latestVersion) {
            $io->writeError('<error>You can not update to a specific SHA-1 as those phars are not available for download</error>');

return 1;
        }

$channelString = $versionsUtil->getChannel();
        if (is_numeric($channelString)) {
            $channelString .= '.x';
        }

if (Composer::VERSION === $updateVersion) {
            $io->writeError(
                sprintf(
                    '<info>You are already using the latest available Composer version %s (%s channel).</info>',
                    $updateVersion,
                    $channelString
                )
            );

// remove all backups except for the most recent, if any
            if ($input->getOption('clean-backups')) {
                $this->cleanBackups($rollbackDir, $this->getLastBackupVersion($rollbackDir));
            }

return 0;
        }

$tempFilename = $tmpDir . '/' . basename($localFilename, '.phar').'-temp'.rand(0, 10000000).'.phar';
        $backupFile = sprintf(
            '%s/%s-%s%s',
            $rollbackDir,
            strtr(Composer::RELEASE_DATE, ' :', '_-'),
            Preg::replace('{^([0-9a-f]{7})[0-9a-f]{33}$}', '$1', Composer::VERSION),
            self::OLD_INSTALL_EXT
        );

$updatingToTag = !Preg::isMatch('{^[0-9a-f]{40}$}', $updateVersion);

$io->write(sprintf("Upgrading to version <info>%s</info> (%s channel).", $updateVersion, $channelString));
        $remoteFilename = $baseUrl . ($updatingToTag ? "/download/{$updateVersion}/composer.phar" : '/composer.phar');
        try {
            $signature = $httpDownloader->get($remoteFilename.'.sig')->getBody();
        } catch (TransportException $e) {
            if ($e->getStatusCode() === 404) {
                throw new \InvalidArgumentException('Version "'.$updateVersion.'" could not be found.', 0, $e);
            }
            throw $e;
        }
        $io->writeError('   ', false);
        $httpDownloader->copy($remoteFilename, $tempFilename);
        $io->writeError('');

if (!file_exists($tempFilename) || !$signature) {
            $io->writeError('<error>The download of the new composer version failed for an unexpected reason</error>');

return 1;
        }

// verify phar signature
        if (!extension_loaded('openssl') && $config->get('disable-tls')) {
            $io->writeError('<warning>Skipping phar signature verification as you have disabled OpenSSL via config.disable-tls</warning>');
        } else {
            if (!extension_loaded('openssl')) {
                throw new \RuntimeException('The openssl extension is required for phar signatures to be verified but it is not available. '
                . 'If you can not enable the openssl extension, you can disable this error, at your own risk, by setting the \'disable-tls\' option to true.');
            }

$sigFile = 'file://'.$home.'/' . ($updatingToTag ? 'keys.tags.pub' : 'keys.dev.pub');
            if (!file_exists($sigFile)) {
                file_put_contents(
                    $home.'/keys.dev.pub',
                    <<<DEVPUBKEY
-----BEGIN PUBLIC KEY-----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-----END PUBLIC KEY-----
DEVPUBKEY
                );

file_put_contents(
                    $home.'/keys.tags.pub',
                    <<<TAGSPUBKEY
-----BEGIN PUBLIC KEY-----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-----END PUBLIC KEY-----
TAGSPUBKEY
                );
            }

$pubkeyid = openssl_pkey_get_public($sigFile);
            $algo = defined('OPENSSL_ALGO_SHA384') ? OPENSSL_ALGO_SHA384 : 'SHA384';
            if (!in_array('sha384', array_map('strtolower', openssl_get_md_methods()))) {
                throw new \RuntimeException('SHA384 is not supported by your openssl extension, could not verify the phar file integrity');
            }
            $signature = json_decode($signature, true);
            $signature = base64_decode($signature['sha384']);
            $verified = 1 === openssl_verify(file_get_contents($tempFilename), $signature, $pubkeyid, $algo);

// PHP 8 automatically frees the key instance and deprecates the function
            if (PHP_VERSION_ID < 80000) {
                openssl_free_key($pubkeyid);
            }

if (!$verified) {
                throw new \RuntimeException('The phar signature did not match the file you downloaded, this means your public keys are outdated or that the phar file is corrupt/has been modified');
            }
        }

// remove saved installations of composer
        if ($input->getOption('clean-backups')) {
            $this->cleanBackups($rollbackDir);
        }

if (!$this->setLocalPhar($localFilename, $tempFilename, $backupFile)) {
            @unlink($tempFilename);

return 1;
        }

if (file_exists($backupFile)) {
            $io->writeError(sprintf(
                'Use <info>composer self-update --rollback</info> to return to version <comment>%s</comment>',
                Composer::VERSION
            ));
        } else {
            $io->writeError('<warning>A backup of the current version could not be written to '.$backupFile.', no rollback possible</warning>');
        }

return 0;
    }

/**
     * @return void
     * @throws \Exception
     */
    protected function fetchKeys(IOInterface $io, Config $config)
    {
        if (!$io->isInteractive()) {
            throw new \RuntimeException('Public keys can not be fetched in non-interactive mode, please run Composer interactively');
        }

$io->write('Open <info>https://composer.github.io/pubkeys.html</info> to find the latest keys');

$validator = function ($value) {
            if (!Preg::isMatch('{^-----BEGIN PUBLIC KEY-----$}', trim($value))) {
                throw new \UnexpectedValueException('Invalid input');
            }

return trim($value)."\n";
        };

$devKey = '';
        while (!Preg::isMatch('{(-----BEGIN PUBLIC KEY-----.+?-----END PUBLIC KEY-----)}s', $devKey, $match)) {
            $devKey = $io->askAndValidate('Enter Dev / Snapshot Public Key (including lines with -----): ', $validator);
            while ($line = $io->ask('')) {
                $devKey .= trim($line)."\n";
                if (trim($line) === '-----END PUBLIC KEY-----') {
                    break;
                }
            }
        }
        file_put_contents($keyPath = $config->get('home').'/keys.dev.pub', $match[0]);
        $io->write('Stored key with fingerprint: ' . Keys::fingerprint($keyPath));

$tagsKey = '';
        while (!Preg::isMatch('{(-----BEGIN PUBLIC KEY-----.+?-----END PUBLIC KEY-----)}s', $tagsKey, $match)) {
            $tagsKey = $io->askAndValidate('Enter Tags Public Key (including lines with -----): ', $validator);
            while ($line = $io->ask('')) {
                $tagsKey .= trim($line)."\n";
                if (trim($line) === '-----END PUBLIC KEY-----') {
                    break;
                }
            }
        }
        file_put_contents($keyPath = $config->get('home').'/keys.tags.pub', $match[0]);
        $io->write('Stored key with fingerprint: ' . Keys::fingerprint($keyPath));

$io->write('Public keys stored in '.$config->get('home'));
    }

/**
     * @param string $rollbackDir
     * @param string $localFilename
     * @return int
     * @throws FilesystemException
     */
    protected function rollback(OutputInterface $output, $rollbackDir, $localFilename)
    {
        $rollbackVersion = $this->getLastBackupVersion($rollbackDir);
        if (!$rollbackVersion) {
            throw new \UnexpectedValueException('Composer rollback failed: no installation to roll back to in "'.$rollbackDir.'"');
        }

$oldFile = $rollbackDir . '/' . $rollbackVersion . self::OLD_INSTALL_EXT;

if (!is_file($oldFile)) {
            throw new FilesystemException('Composer rollback failed: "'.$oldFile.'" could not be found');
        }
        if (!Filesystem::isReadable($oldFile)) {
            throw new FilesystemException('Composer rollback failed: "'.$oldFile.'" could not be read');
        }

$io = $this->getIO();
        $io->writeError(sprintf("Rolling back to version <info>%s</info>.", $rollbackVersion));
        if (!$this->setLocalPhar($localFilename, $oldFile)) {
            return 1;
        }

return 0;
    }

/**
     * Checks if the downloaded/rollback phar is valid then moves it
     *
     * @param  string              $localFilename The composer.phar location
     * @param  string              $newFilename   The downloaded or backup phar
     * @param  string              $backupTarget  The filename to use for the backup
     * @throws FilesystemException If the file cannot be moved
     * @return bool                Whether the phar is valid and has been moved
     */
    protected function setLocalPhar($localFilename, $newFilename, $backupTarget = null)
    {
        $io = $this->getIO();
        @chmod($newFilename, fileperms($localFilename));

// check phar validity
        if (!$this->validatePhar($newFilename, $error)) {
            $io->writeError('<error>The '.($backupTarget ? 'update' : 'backup').' file is corrupted ('.$error.')</error>');

if ($backupTarget) {
                $io->writeError('<error>Please re-run the self-update command to try again.</error>');
            }

return false;
        }

// copy current file into backups dir
        if ($backupTarget) {
            @copy($localFilename, $backupTarget);
        }

try {
            if (Platform::isWindows()) {
                // use copy to apply permissions from the destination directory
                // as rename uses source permissions and may block other users
                copy($newFilename, $localFilename);
                @unlink($newFilename);
            } else {
                rename($newFilename, $localFilename);
            }

return true;
        } catch (\Exception $e) {
            // see if we can run this operation as an Admin on Windows
            if (!is_writable(dirname($localFilename))
                && $io->isInteractive()
                && $this->isWindowsNonAdminUser()) {
                return $this->tryAsWindowsAdmin($localFilename, $newFilename);
            }

@unlink($newFilename);
            $action = 'Composer '.($backupTarget ? 'update' : 'rollback');
            throw new FilesystemException($action.' failed: "'.$localFilename.'" could not be written.'.PHP_EOL.$e->getMessage());
        }
    }

/**
     * @param string $rollbackDir
     * @param string|null $except
     *
     * @return void
     */
    protected function cleanBackups($rollbackDir, $except = null)
    {
        $finder = $this->getOldInstallationFinder($rollbackDir);
        $io = $this->getIO();
        $fs = new Filesystem;

foreach ($finder as $file) {
            if ($except && $file->getBasename(self::OLD_INSTALL_EXT) === $except) {
                continue;
            }
            $file = (string) $file;
            $io->writeError('<info>Removing: '.$file.'</info>');
            $fs->remove($file);
        }
    }

/**
     * @param string $rollbackDir
     * @return string|false
     */
    protected function getLastBackupVersion($rollbackDir)
    {
        $finder = $this->getOldInstallationFinder($rollbackDir);
        $finder->sortByName();
        $files = iterator_to_array($finder);

if (count($files)) {
            return basename(end($files), self::OLD_INSTALL_EXT);
        }

return false;
    }

/**
     * @param string $rollbackDir
     * @return Finder
     */
    protected function getOldInstallationFinder($rollbackDir)
    {
        return Finder::create()
            ->depth(0)
            ->files()
            ->name('*' . self::OLD_INSTALL_EXT)
            ->in($rollbackDir);
    }

/**
     * Validates the downloaded/backup phar file
     *
     * @param string      $pharFile The downloaded or backup phar
     * @param null|string $error    Set by method on failure
     *
     * Code taken from getcomposer.org/installer. Any changes should be made
     * there and replicated here
     *
     * @throws \Exception
     * @return bool       If the operation succeeded
     */
    protected function validatePhar($pharFile, &$error)
    {
        if (ini_get('phar.readonly')) {
            return true;
        }

try {
            // Test the phar validity
            $phar = new \Phar($pharFile);
            // Free the variable to unlock the file
            unset($phar);
            $result = true;
        } catch (\Exception $e) {
            if (!$e instanceof \UnexpectedValueException && !$e instanceof \PharException) {
                throw $e;
            }
            $error = $e->getMessage();
            $result = false;
        }

return $result;
    }

/**
     * Returns true if this is a non-admin Windows user account
     *
     * @return bool
     */
    protected function isWindowsNonAdminUser()
    {
        if (!Platform::isWindows()) {
            return false;
        }

// fltmc.exe manages filter drivers and errors without admin privileges
        exec('fltmc.exe filters', $output, $exitCode);

return $exitCode !== 0;
    }

/**
     * Invokes a UAC prompt to update composer.phar as an admin
     *
     * Uses a .vbs script to elevate and run the cmd.exe copy command.
     *
     * @param  string $localFilename The composer.phar location
     * @param  string $newFilename   The downloaded or backup phar
     * @return bool   Whether composer.phar has been updated
     */
    protected function tryAsWindowsAdmin($localFilename, $newFilename)
    {
        $io = $this->getIO();

$io->writeError('<error>Unable to write "'.$localFilename.'". Access is denied.</error>');
        $helpMessage = 'Please run the self-update command as an Administrator.';
        $question = 'Complete this operation with Administrator privileges [<comment>Y,n</comment>]? ';

if (!$io->askConfirmation($question, false)) {
            $io->writeError('<warning>Operation cancelled. '.$helpMessage.'</warning>');

return false;
        }

$tmpFile = tempnam(sys_get_temp_dir(), '');
        $script = $tmpFile.'.vbs';
        rename($tmpFile, $script);

$checksum = hash_file('sha256', $newFilename);

// cmd's internal copy is fussy about backslashes
        $source = str_replace('/', '\\', $newFilename);
        $destination = str_replace('/', '\\', $localFilename);

$vbs = <<<EOT
Set UAC = CreateObject("Shell.Application")
UAC.ShellExecute "cmd.exe", "/c copy /b /y ""$source"" ""$destination""", "", "runas", 0
Wscript.Sleep(300)
EOT;

file_put_contents($script, $vbs);
        exec('"'.$script.'"');
        @unlink($script);

// see if the file was copied and is still accessible
        if ($result = Filesystem::isReadable($localFilename) && (hash_file('sha256', $localFilename) === $checksum)) {
            $io->writeError('<info>Operation succeeded.</info>');
            @unlink($newFilename);
        } else {
            $io->writeError('<error>Operation failed.'.$helpMessage.'</error>');
        }

return $result;
    }
}
<?php

namespace Composer\Command;

use Composer\Package\Link;
use Composer\Package\PackageInterface;
use Composer\Package\CompletePackageInterface;
use Composer\Package\RootPackage;
use Composer\Repository\InstalledArrayRepository;
use Composer\Repository\CompositeRepository;
use Composer\Repository\RootPackageRepository;
use Composer\Repository\InstalledRepository;
use Composer\Repository\PlatformRepository;
use Composer\Repository\RepositoryFactory;
use Composer\Plugin\CommandEvent;
use Composer\Plugin\PluginEvents;
use Symfony\Component\Console\Formatter\OutputFormatterStyle;
use Composer\Package\Version\VersionParser;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * Base implementation for commands mapping dependency relationships.
 *
 * @author Niels Keurentjes <niels.keurentjes@omines.com>
 */
class BaseDependencyCommand extends BaseCommand
{
    const ARGUMENT_PACKAGE = 'package';
    const ARGUMENT_CONSTRAINT = 'version';
    const OPTION_RECURSIVE = 'recursive';
    const OPTION_TREE = 'tree';

/** @var ?string[] */
    protected $colors;

/**
     * Execute the command.
     *
     * @param  bool            $inverted Whether to invert matching process (why-not vs why behaviour)
     * @return int             Exit code of the operation.
     */
    protected function doExecute(InputInterface $input, OutputInterface $output, $inverted = false)
    {
        // Emit command event on startup
        $composer = $this->getComposer();
        $commandEvent = new CommandEvent(PluginEvents::COMMAND, $this->getName(), $input, $output);
        $composer->getEventDispatcher()->dispatch($commandEvent->getName(), $commandEvent);

$platformOverrides = $composer->getConfig()->get('platform') ?: array();
        $installedRepo = new InstalledRepository(array(
            new RootPackageRepository($composer->getPackage()),
            $composer->getRepositoryManager()->getLocalRepository(),
            new PlatformRepository(array(), $platformOverrides),
        ));

// Parse package name and constraint
        list($needle, $textConstraint) = array_pad(
            explode(':', $input->getArgument(self::ARGUMENT_PACKAGE)),
            2,
            $input->hasArgument(self::ARGUMENT_CONSTRAINT) ? $input->getArgument(self::ARGUMENT_CONSTRAINT) : '*'
        );

// Find packages that are or provide the requested package first
        $packages = $installedRepo->findPackagesWithReplacersAndProviders($needle);
        if (empty($packages)) {
            throw new \InvalidArgumentException(sprintf('Could not find package "%s" in your project', $needle));
        }

// If the version we ask for is not installed then we need to locate it in remote repos and add it.
        // This is needed for why-not to resolve conflicts from an uninstalled version against installed packages.
        if (!$installedRepo->findPackage($needle, $textConstraint)) {
            $defaultRepos = new CompositeRepository(RepositoryFactory::defaultRepos($this->getIO()));
            if ($match = $defaultRepos->findPackage($needle, $textConstraint)) {
                $installedRepo->addRepository(new InstalledArrayRepository(array(clone $match)));
            }
        }

// Include replaced packages for inverted lookups as they are then the actual starting point to consider
        $needles = array($needle);
        if ($inverted) {
            foreach ($packages as $package) {
                $needles = array_merge($needles, array_map(function (Link $link) {
                    return $link->getTarget();
                }, $package->getReplaces()));
            }
        }

// Parse constraint if one was supplied
        if ('*' !== $textConstraint) {
            $versionParser = new VersionParser();
            $constraint = $versionParser->parseConstraints($textConstraint);
        } else {
            $constraint = null;
        }

// Parse rendering options
        $renderTree = $input->getOption(self::OPTION_TREE);
        $recursive = $renderTree || $input->getOption(self::OPTION_RECURSIVE);

// Resolve dependencies
        $results = $installedRepo->getDependents($needles, $constraint, $inverted, $recursive);
        if (empty($results)) {
            $extra = (null !== $constraint) ? sprintf(' in versions %smatching %s', $inverted ? 'not ' : '', $textConstraint) : '';
            $this->getIO()->writeError(sprintf(
                '<info>There is no installed package depending on "%s"%s</info>',
                $needle,
                $extra
            ));
        } elseif ($renderTree) {
            $this->initStyles($output);
            $root = $packages[0];
            $this->getIO()->write(sprintf('<info>%s</info> %s %s', $root->getPrettyName(), $root->getPrettyVersion(), $root instanceof CompletePackageInterface ? $root->getDescription() : ''));
            $this->printTree($results);
        } else {
            $this->printTable($output, $results);
        }

return 0;
    }

/**
     * Assembles and prints a bottom-up table of the dependencies.
     *
     * @param array{PackageInterface, Link, mixed}[] $results
     *
     * @return void
     */
    protected function printTable(OutputInterface $output, $results)
    {
        $table = array();
        $doubles = array();
        do {
            $queue = array();
            $rows = array();
            foreach ($results as $result) {
                /**
                 * @var PackageInterface $package
                 * @var Link             $link
                 */
                list($package, $link, $children) = $result;
                $unique = (string) $link;
                if (isset($doubles[$unique])) {
                    continue;
                }
                $doubles[$unique] = true;
                $version = $package->getPrettyVersion() === RootPackage::DEFAULT_PRETTY_VERSION ? '-' : $package->getPrettyVersion();
                $rows[] = array($package->getPrettyName(), $version, $link->getDescription(), sprintf('%s (%s)', $link->getTarget(), $link->getPrettyConstraint()));
                if ($children) {
                    $queue = array_merge($queue, $children);
                }
            }
            $results = $queue;
            $table = array_merge($rows, $table);
        } while (!empty($results));

$this->renderTable($table, $output);
    }

foreach ($this->colors as $color) {
            $style = new OutputFormatterStyle($color);
            $output->getFormatter()->setStyle($color, $style);
        }
    }

/**
     * Recursively prints a tree of the selected results.
     *
     * @param array{PackageInterface, Link, mixed[]|bool}[] $results Results to be printed at this level.
     * @param string  $prefix  Prefix of the current tree level.
     * @param int     $level   Current level of recursion.
     *
     * @return void
     */
    protected function printTree($results, $prefix = '', $level = 1)
    {
        $count = count($results);
        $idx = 0;
        foreach ($results as $result) {
            list($package, $link, $children) = $result;

$color = $this->colors[$level % count($this->colors)];
            $prevColor = $this->colors[($level - 1) % count($this->colors)];
            $isLast = (++$idx == $count);
            $versionText = $package->getPrettyVersion() === RootPackage::DEFAULT_PRETTY_VERSION ? '' : $package->getPrettyVersion();
            $packageText = rtrim(sprintf('<%s>%s</%1$s> %s', $color, $package->getPrettyName(), $versionText));
            $linkText = sprintf('%s <%s>%s</%2$s> %s', $link->getDescription(), $prevColor, $link->getTarget(), $link->getPrettyConstraint());
            $circularWarn = $children === false ? '(circular dependency aborted here)' : '';
            $this->writeTreeLine(rtrim(sprintf("%s%s%s (%s) %s", $prefix, $isLast ? '└──' : '├──', $packageText, $linkText, $circularWarn)));
            if ($children) {
                $this->printTree($children, $prefix . ($isLast ? '   ' : '│  '), $level + 1);
            }
        }
    }

$io->write($line);
    }
}
<?php

namespace Composer\Command;

use Composer\Repository\PlatformRepository;
use Composer\Repository\RootPackageRepository;
use Composer\Repository\InstalledRepository;
use Composer\Installer\SuggestedPackagesReporter;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;

class SuggestsCommand extends BaseCommand
{
    /**
     * @return void
     */
    protected function configure()
    {
        $this
            ->setName('suggests')
            ->setDescription('Shows package suggestions.')
            ->setDefinition(array(
                new InputOption('by-package', null, InputOption::VALUE_NONE, 'Groups output by suggesting package (default)'),
                new InputOption('by-suggestion', null, InputOption::VALUE_NONE, 'Groups output by suggested package'),
                new InputOption('all', 'a', InputOption::VALUE_NONE, 'Show suggestions from all dependencies, including transitive ones'),
                new InputOption('list', null, InputOption::VALUE_NONE, 'Show only list of suggested package names'),
                new InputOption('no-dev', null, InputOption::VALUE_NONE, 'Exclude suggestions from require-dev packages'),
                new InputArgument('packages', InputArgument::IS_ARRAY | InputArgument::OPTIONAL, 'Packages that you want to list suggestions from.'),
            ))
            ->setHelp(
                <<<EOT

The <info>%command.name%</info> command shows a sorted list of suggested packages.

Read more at https://getcomposer.org/doc/03-cli.md#suggests
EOT
            )
        ;
    }

/**
     * @inheritDoc
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $composer = $this->getComposer();

$installedRepos = array(
            new RootPackageRepository(clone $composer->getPackage()),
        );

$locker = $composer->getLocker();
        if ($locker->isLocked()) {
            $installedRepos[] = new PlatformRepository(array(), $locker->getPlatformOverrides());
            $installedRepos[] = $locker->getLockedRepository(!$input->getOption('no-dev'));
        } else {
            $installedRepos[] = new PlatformRepository(array(), $composer->getConfig()->get('platform') ?: array());
            $installedRepos[] = $composer->getRepositoryManager()->getLocalRepository();
        }

$installedRepo = new InstalledRepository($installedRepos);
        $reporter = new SuggestedPackagesReporter($this->getIO());

$filter = $input->getArgument('packages');
        $packages = $installedRepo->getPackages();
        $packages[] = $composer->getPackage();
        foreach ($packages as $package) {
            if (!empty($filter) && !in_array($package->getName(), $filter)) {
                continue;
            }

$reporter->addSuggestionsFromPackage($package);
        }

// Determine output mode, default is by-package
        $mode = SuggestedPackagesReporter::MODE_BY_PACKAGE;

// if by-suggestion is given we override the default
        if ($input->getOption('by-suggestion')) {
            $mode = SuggestedPackagesReporter::MODE_BY_SUGGESTION;
        }
        // unless by-package is also present then we enable both
        if ($input->getOption('by-package')) {
            $mode |= SuggestedPackagesReporter::MODE_BY_PACKAGE;
        }
        // list is exclusive and overrides everything else
        if ($input->getOption('list')) {
            $mode = SuggestedPackagesReporter::MODE_LIST;
        }

$reporter->output($mode, $installedRepo, empty($filter) && !$input->getOption('all') ? $composer->getPackage() : null);

return 0;
    }
}
<?php

namespace Composer\Command;

use Composer\Factory;
use Composer\IO\IOInterface;
use Composer\Package\Loader\ValidatingArrayLoader;
use Composer\Plugin\CommandEvent;
use Composer\Plugin\PluginEvents;
use Composer\Repository\InstalledRepository;
use Composer\Repository\PlatformRepository;
use Composer\Util\ConfigValidator;
use Composer\Util\Filesystem;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * ValidateCommand
 *
 * @author Robert Schönthal <seroscho@googlemail.com>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class ValidateCommand extends BaseCommand
{
    /**
     * configure
     * @return void
     */
    protected function configure()
    {
        $this
            ->setName('validate')
            ->setDescription('Validates a composer.json and composer.lock.')
            ->setDefinition(array(
                new InputOption('no-check-all', null, InputOption::VALUE_NONE, 'Do not validate requires for overly strict/loose constraints'),
                new InputOption('no-check-lock', null, InputOption::VALUE_NONE, 'Do not check if lock file is up to date'),
                new InputOption('no-check-publish', null, InputOption::VALUE_NONE, 'Do not check for publish errors'),
                new InputOption('no-check-version', null, InputOption::VALUE_NONE, 'Do not report a warning if the version field is present'),
                new InputOption('with-dependencies', 'A', InputOption::VALUE_NONE, 'Also validate the composer.json of all installed dependencies'),
                new InputOption('strict', null, InputOption::VALUE_NONE, 'Return a non-zero exit code for warnings as well as errors'),
                new InputArgument('file', InputArgument::OPTIONAL, 'path to composer.json file'),
            ))
            ->setHelp(
                <<<EOT
The validate command validates a given composer.json and composer.lock

Exit codes in case of errors are:
1 validation warning(s), only when --strict is given
2 validation error(s)
3 file unreadable or missing

Read more at https://getcomposer.org/doc/03-cli.md#validate
EOT
            );
    }

/**
     * @return int
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $file = $input->getArgument('file') ?: Factory::getComposerFile();
        $io = $this->getIO();

if (!file_exists($file)) {
            $io->writeError('<error>' . $file . ' not found.</error>');

return 3;
        }
        if (!Filesystem::isReadable($file)) {
            $io->writeError('<error>' . $file . ' is not readable.</error>');

return 3;
        }

$validator = new ConfigValidator($io);
        $checkAll = $input->getOption('no-check-all') ? 0 : ValidatingArrayLoader::CHECK_ALL;
        $checkPublish = !$input->getOption('no-check-publish');
        $checkLock = !$input->getOption('no-check-lock');
        $checkVersion = $input->getOption('no-check-version') ? 0 : ConfigValidator::CHECK_VERSION;
        $isStrict = $input->getOption('strict');
        list($errors, $publishErrors, $warnings) = $validator->validate($file, $checkAll, $checkVersion);

$lockErrors = array();
        $composer = Factory::create($io, $file, $input->hasParameterOption('--no-plugins'));
        $locker = $composer->getLocker();
        if ($locker->isLocked() && !$locker->isFresh()) {
            $lockErrors[] = '- The lock file is not up to date with the latest changes in composer.json, it is recommended that you run `composer update` or `composer update <package name>`.';
        }

if ($locker->isLocked()) {
            $missingRequirements = false;
            $sets = array(
                array('repo' => $locker->getLockedRepository(false), 'method' => 'getRequires', 'description' => 'Required'),
                array('repo' => $locker->getLockedRepository(true), 'method' => 'getDevRequires', 'description' => 'Required (in require-dev)'),
            );
            foreach ($sets as $set) {
                $installedRepo = new InstalledRepository(array($set['repo']));

foreach (call_user_func(array($composer->getPackage(), $set['method'])) as $link) {
                    if (PlatformRepository::isPlatformPackage($link->getTarget())) {
                        continue;
                    }
                    if (!$installedRepo->findPackagesWithReplacersAndProviders($link->getTarget(), $link->getConstraint())) {
                        if ($results = $installedRepo->findPackagesWithReplacersAndProviders($link->getTarget())) {
                            $provider = reset($results);
                            $lockErrors[] = '- ' . $set['description'].' package "' . $link->getTarget() . '" is in the lock file as "'.$provider->getPrettyVersion().'" but that does not satisfy your constraint "'.$link->getPrettyConstraint().'".';
                        } else {
                            $lockErrors[] = '- ' . $set['description'].' package "' . $link->getTarget() . '" is not present in the lock file.';
                        }
                        $missingRequirements = true;
                    }
                }
            }

if ($missingRequirements) {
                $lockErrors[] = 'This usually happens when composer files are incorrectly merged or the composer.json file is manually edited.';
                $lockErrors[] = 'Read more about correctly resolving merge conflicts https://getcomposer.org/doc/articles/resolving-merge-conflicts.md';
                $lockErrors[] = 'and prefer using the "require" command over editing the composer.json file directly https://getcomposer.org/doc/03-cli.md#require';
            }
        }

$this->outputResult($io, $file, $errors, $warnings, $checkPublish, $publishErrors, $checkLock, $lockErrors, true);

// $errors include publish and lock errors when exists
        $exitCode = $errors ? 2 : ($isStrict && $warnings ? 1 : 0);

if ($input->getOption('with-dependencies')) {
            $localRepo = $composer->getRepositoryManager()->getLocalRepository();
            foreach ($localRepo->getPackages() as $package) {
                $path = $composer->getInstallationManager()->getInstallPath($package);
                $file = $path . '/composer.json';
                if (is_dir($path) && file_exists($file)) {
                    list($errors, $publishErrors, $warnings) = $validator->validate($file, $checkAll, $checkVersion);

$this->outputResult($io, $package->getPrettyName(), $errors, $warnings, $checkPublish, $publishErrors);

// $errors include publish errors when exists
                    $depCode = $errors ? 2 : ($isStrict && $warnings ? 1 : 0);
                    $exitCode = max($depCode, $exitCode);
                }
            }
        }

$commandEvent = new CommandEvent(PluginEvents::COMMAND, 'validate', $input, $output);
        $eventCode = $composer->getEventDispatcher()->dispatch($commandEvent->getName(), $commandEvent);

return max($eventCode, $exitCode);
    }

/**
     * @param string $name
     * @param string[] $errors
     * @param string[] $warnings
     * @param bool $checkPublish
     * @param string[] $publishErrors
     * @param bool $checkLock
     * @param string[] $lockErrors
     * @param bool $printSchemaUrl
     *
     * @return void
     */
    private function outputResult(IOInterface $io, $name, &$errors, &$warnings, $checkPublish = false, $publishErrors = array(), $checkLock = false, $lockErrors = array(), $printSchemaUrl = false)
    {
        $doPrintSchemaUrl = false;

if ($errors) {
            $io->writeError('<error>' . $name . ' is invalid, the following errors/warnings were found:</error>');
        } elseif ($publishErrors) {
            $io->writeError('<info>' . $name . ' is valid for simple usage with Composer but has</info>');
            $io->writeError('<info>strict errors that make it unable to be published as a package</info>');
            $doPrintSchemaUrl = $printSchemaUrl;
        } elseif ($warnings) {
            $io->writeError('<info>' . $name . ' is valid, but with a few warnings</info>');
            $doPrintSchemaUrl = $printSchemaUrl;
        } elseif ($lockErrors) {
            $io->write('<info>' . $name . ' is valid but your composer.lock has some '.($checkLock ? 'errors' : 'warnings').'</info>');
        } else {
            $io->write('<info>' . $name . ' is valid</info>');
        }

if ($doPrintSchemaUrl) {
            $io->writeError('<warning>See https://getcomposer.org/doc/04-schema.md for details on the schema</warning>');
        }

if ($errors) {
            $errors = array_map(function ($err) {
                return '- ' . $err;
            }, $errors);
            array_unshift($errors, '# General errors');
        }
        if ($warnings) {
            $warnings = array_map(function ($err) {
                return '- ' . $err;
            }, $warnings);
            array_unshift($warnings, '# General warnings');
        }

// Avoid setting the exit code to 1 in case --strict and --no-check-publish/--no-check-lock are combined
        $extraWarnings = array();

// If checking publish errors, display them as errors, otherwise just show them as warnings
        if ($publishErrors) {
            $publishErrors = array_map(function ($err) {
                return '- ' . $err;
            }, $publishErrors);

if ($checkPublish) {
                array_unshift($publishErrors, '# Publish errors');
                $errors = array_merge($errors, $publishErrors);
            } else {
                array_unshift($publishErrors, '# Publish warnings');
                $extraWarnings = array_merge($extraWarnings, $publishErrors);
            }
        }

// If checking lock errors, display them as errors, otherwise just show them as warnings
        if ($lockErrors) {
            if ($checkLock) {
                array_unshift($lockErrors, '# Lock file errors');
                $errors = array_merge($errors, $lockErrors);
            } else {
                array_unshift($lockErrors, '# Lock file warnings');
                $extraWarnings = array_merge($extraWarnings, $lockErrors);
            }
        }

$messages = array(
            'error' => $errors,
            'warning' => array_merge($warnings, $extraWarnings),
        );

foreach ($messages as $style => $msgs) {
            foreach ($msgs as $msg) {
                if (strpos($msg, '#') === 0) {
                    $io->writeError('<' . $style . '>' . $msg . '</' . $style . '>');
                } else {
                    $io->writeError($msg);
                }
            }
        }
    }
}
<?php

namespace Composer;

use Composer\Config\JsonConfigSource;
use Composer\Json\JsonFile;
use Composer\IO\IOInterface;
use Composer\Package\Archiver;
use Composer\Package\Version\VersionGuesser;
use Composer\Package\RootPackageInterface;
use Composer\Repository\RepositoryManager;
use Composer\Repository\RepositoryFactory;
use Composer\Util\Filesystem;
use Composer\Util\Platform;
use Composer\Util\ProcessExecutor;
use Composer\Util\HttpDownloader;
use Composer\Util\Loop;
use Composer\Util\Silencer;
use Composer\Plugin\PluginEvents;
use Composer\EventDispatcher\Event;
use Seld\JsonLint\DuplicateKeyException;
use Symfony\Component\Console\Formatter\OutputFormatter;
use Symfony\Component\Console\Formatter\OutputFormatterStyle;
use Symfony\Component\Console\Output\ConsoleOutput;
use Composer\EventDispatcher\EventDispatcher;
use Composer\Autoload\AutoloadGenerator;
use Composer\Package\Version\VersionParser;
use Composer\Downloader\TransportException;
use Composer\Json\JsonValidationException;
use Composer\Repository\InstalledRepositoryInterface;
use Seld\JsonLint\JsonParser;

/**
 * Creates a configured instance of composer.
 *
 * @author Ryan Weaver <ryan@knplabs.com>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 * @author Igor Wiedler <igor@wiedler.ch>
 * @author Nils Adermann <naderman@naderman.de>
 */
class Factory
{
    /**
     * @throws \RuntimeException
     * @return string
     */
    protected static function getHomeDir()
    {
        $home = Platform::getEnv('COMPOSER_HOME');
        if ($home) {
            return $home;
        }

if (Platform::isWindows()) {
            if (!Platform::getEnv('APPDATA')) {
                throw new \RuntimeException('The APPDATA or COMPOSER_HOME environment variable must be set for composer to run correctly');
            }

return rtrim(strtr(Platform::getEnv('APPDATA'), '\\', '/'), '/') . '/Composer';
        }

$userDir = self::getUserDir();
        $dirs = array();

if (self::useXdg()) {
            // XDG Base Directory Specifications
            $xdgConfig = Platform::getEnv('XDG_CONFIG_HOME');
            if (!$xdgConfig) {
                $xdgConfig = $userDir . '/.config';
            }

$dirs[] = $xdgConfig . '/composer';
        }

$dirs[] = $userDir . '/.composer';

// select first dir which exists of: $XDG_CONFIG_HOME/composer or ~/.composer
        foreach ($dirs as $dir) {
            if (Silencer::call('is_dir', $dir)) {
                return $dir;
            }
        }

// if none exists, we default to first defined one (XDG one if system uses it, or ~/.composer otherwise)
        return $dirs[0];
    }

/**
     * @param  string $home
     * @return string
     */
    protected static function getCacheDir($home)
    {
        $cacheDir = Platform::getEnv('COMPOSER_CACHE_DIR');
        if ($cacheDir) {
            return $cacheDir;
        }

$homeEnv = Platform::getEnv('COMPOSER_HOME');
        if ($homeEnv) {
            return $homeEnv . '/cache';
        }

if (Platform::isWindows()) {
            if ($cacheDir = Platform::getEnv('LOCALAPPDATA')) {
                $cacheDir .= '/Composer';
            } else {
                $cacheDir = $home . '/cache';
            }

return rtrim(strtr($cacheDir, '\\', '/'), '/');
        }

$userDir = self::getUserDir();
        if (PHP_OS === 'Darwin') {
            // Migrate existing cache dir in old location if present
            if (is_dir($home . '/cache') && !is_dir($userDir . '/Library/Caches/composer')) {
                Silencer::call('rename', $home . '/cache', $userDir . '/Library/Caches/composer');
            }

return $userDir . '/Library/Caches/composer';
        }

if ($home === $userDir . '/.composer' && is_dir($home . '/cache')) {
            return $home . '/cache';
        }

if (self::useXdg()) {
            $xdgCache = Platform::getEnv('XDG_CACHE_HOME') ?: $userDir . '/.cache';

return $xdgCache . '/composer';
        }

return $home . '/cache';
    }

/**
     * @param  string $home
     * @return string
     */
    protected static function getDataDir($home)
    {
        $homeEnv = Platform::getEnv('COMPOSER_HOME');
        if ($homeEnv) {
            return $homeEnv;
        }

if (Platform::isWindows()) {
            return strtr($home, '\\', '/');
        }

$userDir = self::getUserDir();
        if ($home !== $userDir . '/.composer' && self::useXdg()) {
            $xdgData = Platform::getEnv('XDG_DATA_HOME') ?: $userDir . '/.local/share';

return $xdgData . '/composer';
        }

return $home;
    }

/**
     * @param string|null $cwd
     *
     * @return Config
     */
    public static function createConfig(IOInterface $io = null, $cwd = null)
    {
        $cwd = $cwd ?: (string) getcwd();

$config = new Config(true, $cwd);

// determine and add main dirs to the config
        $home = self::getHomeDir();
        $config->merge(array('config' => array(
            'home' => $home,
            'cache-dir' => self::getCacheDir($home),
            'data-dir' => self::getDataDir($home),
        )), Config::SOURCE_DEFAULT);

// load global config
        $file = new JsonFile($config->get('home').'/config.json');
        if ($file->exists()) {
            if ($io && $io->isDebug()) {
                $io->writeError('Loading config file ' . $file->getPath());
            }
            $config->merge($file->read(), $file->getPath());
        }
        $config->setConfigSource(new JsonConfigSource($file));

$htaccessProtect = (bool) $config->get('htaccess-protect');
        if ($htaccessProtect) {
            // Protect directory against web access. Since HOME could be
            // the www-data's user home and be web-accessible it is a
            // potential security risk
            $dirs = array($config->get('home'), $config->get('cache-dir'), $config->get('data-dir'));
            foreach ($dirs as $dir) {
                if (!file_exists($dir . '/.htaccess')) {
                    if (!is_dir($dir)) {
                        Silencer::call('mkdir', $dir, 0777, true);
                    }
                    Silencer::call('file_put_contents', $dir . '/.htaccess', 'Deny from all');
                }
            }
        }

// load global auth file
        $file = new JsonFile($config->get('home').'/auth.json');
        if ($file->exists()) {
            if ($io && $io->isDebug()) {
                $io->writeError('Loading config file ' . $file->getPath());
            }
            $config->merge(array('config' => $file->read()), $file->getPath());
        }
        $config->setAuthConfigSource(new JsonConfigSource($file, true));

// load COMPOSER_AUTH environment variable if set
        if ($composerAuthEnv = Platform::getEnv('COMPOSER_AUTH')) {
            $authData = json_decode($composerAuthEnv, true);

if (null === $authData) {
                if ($io) {
                    $io->writeError('<error>COMPOSER_AUTH environment variable is malformed, should be a valid JSON object</error>');
                }
            } else {
                if ($io && $io->isDebug()) {
                    $io->writeError('Loading auth config from COMPOSER_AUTH');
                }
                $config->merge(array('config' => $authData), 'COMPOSER_AUTH');
            }
        }

return $config;
    }

/**
     * @return string
     */
    public static function getComposerFile()
    {
        return trim(Platform::getEnv('COMPOSER')) ?: './composer.json';
    }

/**
     * @param string $composerFile
     *
     * @return string
     */
    public static function getLockFile($composerFile)
    {
        return "json" === pathinfo($composerFile, PATHINFO_EXTENSION)
                ? substr($composerFile, 0, -4).'lock'
                : $composerFile . '.lock';
    }

/**
     * @return array{highlight: OutputFormatterStyle, warning: OutputFormatterStyle}
     */
    public static function createAdditionalStyles()
    {
        return array(
            'highlight' => new OutputFormatterStyle('red'),
            'warning' => new OutputFormatterStyle('black', 'yellow'),
        );
    }

/**
     * Creates a ConsoleOutput instance
     *
     * @return ConsoleOutput
     */
    public static function createOutput()
    {
        $styles = self::createAdditionalStyles();
        $formatter = new OutputFormatter(false, $styles);

return new ConsoleOutput(ConsoleOutput::VERBOSITY_NORMAL, null, $formatter);
    }

/**
     * Creates a Composer instance
     *
     * @param  IOInterface                       $io             IO instance
     * @param  array<string, mixed>|string|null  $localConfig    either a configuration array or a filename to read from, if null it will
     *                                                           read from the default filename
     * @param  bool                              $disablePlugins Whether plugins should not be loaded
     * @param  bool                              $disableScripts Whether scripts should not be run
     * @param  string|null                       $cwd
     * @param  bool                              $fullLoad       Whether to initialize everything or only main project stuff (used when loading the global composer)
     * @throws \InvalidArgumentException
     * @throws \UnexpectedValueException
     * @return Composer
     */
    public function createComposer(IOInterface $io, $localConfig = null, $disablePlugins = false, $cwd = null, $fullLoad = true, $disableScripts = false)
    {
        $cwd = $cwd ?: (string) getcwd();

// load Composer configuration
        if (null === $localConfig) {
            $localConfig = static::getComposerFile();
        }

$localConfigSource = Config::SOURCE_UNKNOWN;
        if (is_string($localConfig)) {
            $composerFile = $localConfig;

$file = new JsonFile($localConfig, null, $io);

if (!$file->exists()) {
                if ($localConfig === './composer.json' || $localConfig === 'composer.json') {
                    $message = 'Composer could not find a composer.json file in '.$cwd;
                } else {
                    $message = 'Composer could not find the config file: '.$localConfig;
                }
                $instructions = $fullLoad ? 'To initialize a project, please create a composer.json file. See https://getcomposer.org/basic-usage' : '';
                throw new \InvalidArgumentException($message.PHP_EOL.$instructions);
            }

try {
                $file->validateSchema(JsonFile::LAX_SCHEMA);
            } catch (JsonValidationException $e) {
                $errors = ' - ' . implode(PHP_EOL . ' - ', $e->getErrors());
                $message = $e->getMessage() . ':' . PHP_EOL . $errors;
                throw new JsonValidationException($message);
            }
            $jsonParser = new JsonParser;
            try {
                $jsonParser->parse(file_get_contents($localConfig), JsonParser::DETECT_KEY_CONFLICTS);
            } catch (DuplicateKeyException $e) {
                $details = $e->getDetails();
                $io->writeError('<warning>Key '.$details['key'].' is a duplicate in '.$localConfig.' at line '.$details['line'].'</warning>');
            }

$localConfig = $file->read();
            $localConfigSource = $file->getPath();
        }

// Load config and override with local config/auth config
        $config = static::createConfig($io, $cwd);
        $config->merge($localConfig, $localConfigSource);
        if (isset($composerFile)) {
            $io->writeError('Loading config file ' . $composerFile .' ('.realpath($composerFile).')', true, IOInterface::DEBUG);
            $config->setConfigSource(new JsonConfigSource(new JsonFile(realpath($composerFile), null, $io)));

$localAuthFile = new JsonFile(dirname(realpath($composerFile)) . '/auth.json', null, $io);
            if ($localAuthFile->exists()) {
                $io->writeError('Loading config file ' . $localAuthFile->getPath(), true, IOInterface::DEBUG);
                $config->merge(array('config' => $localAuthFile->read()), $localAuthFile->getPath());
                $config->setAuthConfigSource(new JsonConfigSource($localAuthFile, true));
            }
        }

$vendorDir = $config->get('vendor-dir');

// initialize composer
        $composer = new Composer();
        $composer->setConfig($config);

if ($fullLoad) {
            // load auth configs into the IO instance
            $io->loadConfiguration($config);

// load existing Composer\InstalledVersions instance if available
            if (!class_exists('Composer\InstalledVersions', false) && file_exists($installedVersionsPath = $config->get('vendor-dir').'/composer/InstalledVersions.php')) {
                include $installedVersionsPath;
            }
        }

$httpDownloader = self::createHttpDownloader($io, $config);
        $process = new ProcessExecutor($io);
        $loop = new Loop($httpDownloader, $process);
        $composer->setLoop($loop);

// initialize event dispatcher
        $dispatcher = new EventDispatcher($composer, $io, $process);
        $dispatcher->setRunScripts(!$disableScripts);
        $composer->setEventDispatcher($dispatcher);

// initialize repository manager
        $rm = RepositoryFactory::manager($io, $config, $httpDownloader, $dispatcher, $process);
        $composer->setRepositoryManager($rm);

// force-set the version of the global package if not defined as
        // guessing it adds no value and only takes time
        if (!$fullLoad && !isset($localConfig['version'])) {
            $localConfig['version'] = '1.0.0';
        }

// load package
        $parser = new VersionParser;
        $guesser = new VersionGuesser($config, $process, $parser);
        $loader = $this->loadRootPackage($rm, $config, $parser, $guesser, $io);
        $package = $loader->load($localConfig, 'Composer\Package\RootPackage', $cwd);
        $composer->setPackage($package);

// load local repository
        $this->addLocalRepository($io, $rm, $vendorDir, $package, $process);

// initialize installation manager
        $im = $this->createInstallationManager($loop, $io, $dispatcher);
        $composer->setInstallationManager($im);

if ($fullLoad) {
            // initialize download manager
            $dm = $this->createDownloadManager($io, $config, $httpDownloader, $process, $dispatcher);
            $composer->setDownloadManager($dm);

// initialize autoload generator
            $generator = new AutoloadGenerator($dispatcher, $io);
            $composer->setAutoloadGenerator($generator);

// initialize archive manager
            $am = $this->createArchiveManager($config, $dm, $loop);
            $composer->setArchiveManager($am);
        }

// add installers to the manager (must happen after download manager is created since they read it out of $composer)
        $this->createDefaultInstallers($im, $composer, $io, $process);

if ($fullLoad) {
            $globalComposer = null;
            if (realpath($config->get('home')) !== $cwd) {
                $globalComposer = $this->createGlobalComposer($io, $config, $disablePlugins, $disableScripts);
            }

$pm = $this->createPluginManager($io, $composer, $globalComposer, $disablePlugins);
            $composer->setPluginManager($pm);

$pm->loadInstalledPlugins();
        }

// init locker if possible
        if ($fullLoad && isset($composerFile)) {
            $lockFile = self::getLockFile($composerFile);

$locker = new Package\Locker($io, new JsonFile($lockFile, null, $io), $im, file_get_contents($composerFile), $process);
            $composer->setLocker($locker);
        }

if ($fullLoad) {
            $initEvent = new Event(PluginEvents::INIT);
            $composer->getEventDispatcher()->dispatch($initEvent->getName(), $initEvent);

// once everything is initialized we can
            // purge packages from local repos if they have been deleted on the filesystem
            $this->purgePackages($rm->getLocalRepository(), $im);
        }

return $composer;
    }

/**
     * @param  IOInterface   $io             IO instance
     * @param  bool          $disablePlugins Whether plugins should not be loaded
     * @param  bool          $disableScripts Whether scripts should not be executed
     * @return Composer|null
     */
    public static function createGlobal(IOInterface $io, $disablePlugins = false, $disableScripts = false)
    {
        $factory = new static();

return $factory->createGlobalComposer($io, static::createConfig($io), $disablePlugins, $disableScripts, true);
    }

/**
     * @param Repository\RepositoryManager $rm
     * @param string                       $vendorDir
     *
     * @return void
     */
    protected function addLocalRepository(IOInterface $io, RepositoryManager $rm, $vendorDir, RootPackageInterface $rootPackage, ProcessExecutor $process = null)
    {
        $fs = null;
        if ($process) {
            $fs = new Filesystem($process);
        }

$rm->setLocalRepository(new Repository\InstalledFilesystemRepository(new JsonFile($vendorDir.'/composer/installed.json', null, $io), true, $rootPackage, $fs));
    }

/**
     * @param bool $disablePlugins
     * @param bool $disableScripts
     * @param bool $fullLoad
     *
     * @return Composer|null
     */
    protected function createGlobalComposer(IOInterface $io, Config $config, $disablePlugins, $disableScripts, $fullLoad = false)
    {
        $composer = null;
        try {
            $composer = $this->createComposer($io, $config->get('home') . '/composer.json', $disablePlugins, $config->get('home'), $fullLoad, $disableScripts);
        } catch (\Exception $e) {
            $io->writeError('Failed to initialize global composer: '.$e->getMessage(), true, IOInterface::DEBUG);
        }

return $composer;
    }

/**
     * @param  IO\IOInterface             $io
     * @param  Config                     $config
     * @param  EventDispatcher            $eventDispatcher
     * @return Downloader\DownloadManager
     */
    public function createDownloadManager(IOInterface $io, Config $config, HttpDownloader $httpDownloader, ProcessExecutor $process, EventDispatcher $eventDispatcher = null)
    {
        $cache = null;
        if ($config->get('cache-files-ttl') > 0) {
            $cache = new Cache($io, $config->get('cache-files-dir'), 'a-z0-9_./');
            $cache->setReadOnly($config->get('cache-read-only'));
        }

$fs = new Filesystem($process);

$dm = new Downloader\DownloadManager($io, false, $fs);
        switch ($preferred = $config->get('preferred-install')) {
            case 'dist':
                $dm->setPreferDist(true);
                break;
            case 'source':
                $dm->setPreferSource(true);
                break;
            case 'auto':
            default:
                // noop
                break;
        }

if (is_array($preferred)) {
            $dm->setPreferences($preferred);
        }

$dm->setDownloader('git', new Downloader\GitDownloader($io, $config, $process, $fs));
        $dm->setDownloader('svn', new Downloader\SvnDownloader($io, $config, $process, $fs));
        $dm->setDownloader('fossil', new Downloader\FossilDownloader($io, $config, $process, $fs));
        $dm->setDownloader('hg', new Downloader\HgDownloader($io, $config, $process, $fs));
        $dm->setDownloader('perforce', new Downloader\PerforceDownloader($io, $config, $process, $fs));
        $dm->setDownloader('zip', new Downloader\ZipDownloader($io, $config, $httpDownloader, $eventDispatcher, $cache, $fs, $process));
        $dm->setDownloader('rar', new Downloader\RarDownloader($io, $config, $httpDownloader, $eventDispatcher, $cache, $fs, $process));
        $dm->setDownloader('tar', new Downloader\TarDownloader($io, $config, $httpDownloader, $eventDispatcher, $cache, $fs, $process));
        $dm->setDownloader('gzip', new Downloader\GzipDownloader($io, $config, $httpDownloader, $eventDispatcher, $cache, $fs, $process));
        $dm->setDownloader('xz', new Downloader\XzDownloader($io, $config, $httpDownloader, $eventDispatcher, $cache, $fs, $process));
        $dm->setDownloader('phar', new Downloader\PharDownloader($io, $config, $httpDownloader, $eventDispatcher, $cache, $fs, $process));
        $dm->setDownloader('file', new Downloader\FileDownloader($io, $config, $httpDownloader, $eventDispatcher, $cache, $fs, $process));
        $dm->setDownloader('path', new Downloader\PathDownloader($io, $config, $httpDownloader, $eventDispatcher, $cache, $fs, $process));

return $dm;
    }

/**
     * @param  Config                     $config The configuration
     * @param  Downloader\DownloadManager $dm     Manager use to download sources
     * @return Archiver\ArchiveManager
     */
    public function createArchiveManager(Config $config, Downloader\DownloadManager $dm, Loop $loop)
    {
        $am = new Archiver\ArchiveManager($dm, $loop);
        $am->addArchiver(new Archiver\ZipArchiver);
        $am->addArchiver(new Archiver\PharArchiver);

return $am;
    }

/**
     * @param  IOInterface          $io
     * @param  Composer             $composer
     * @param  Composer             $globalComposer
     * @param  bool                 $disablePlugins
     * @return Plugin\PluginManager
     */
    protected function createPluginManager(IOInterface $io, Composer $composer, Composer $globalComposer = null, $disablePlugins = false)
    {
        return new Plugin\PluginManager($io, $composer, $globalComposer, $disablePlugins);
    }

/**
     * @return Installer\InstallationManager
     */
    public function createInstallationManager(Loop $loop, IOInterface $io, EventDispatcher $eventDispatcher = null)
    {
        return new Installer\InstallationManager($loop, $io, $eventDispatcher);
    }

/**
     * @return void
     */
    protected function createDefaultInstallers(Installer\InstallationManager $im, Composer $composer, IOInterface $io, ProcessExecutor $process = null)
    {
        $fs = new Filesystem($process);
        $binaryInstaller = new Installer\BinaryInstaller($io, rtrim($composer->getConfig()->get('bin-dir'), '/'), $composer->getConfig()->get('bin-compat'), $fs, rtrim($composer->getConfig()->get('vendor-dir'), '/'));

$im->addInstaller(new Installer\LibraryInstaller($io, $composer, null, $fs, $binaryInstaller));
        $im->addInstaller(new Installer\PluginInstaller($io, $composer, $fs, $binaryInstaller));
        $im->addInstaller(new Installer\MetapackageInstaller($io));
    }

/**
     * @param InstalledRepositoryInterface   $repo repository to purge packages from
     * @param Installer\InstallationManager  $im   manager to check whether packages are still installed
     *
     * @return void
     */
    protected function purgePackages(InstalledRepositoryInterface $repo, Installer\InstallationManager $im)
    {
        foreach ($repo->getPackages() as $package) {
            if (!$im->isPackageInstalled($repo, $package)) {
                $repo->removePackage($package);
            }
        }
    }

/**
     * @return Package\Loader\RootPackageLoader
     */
    protected function loadRootPackage(RepositoryManager $rm, Config $config, VersionParser $parser, VersionGuesser $guesser, IOInterface $io)
    {
        return new Package\Loader\RootPackageLoader($rm, $config, $parser, $guesser, $io);
    }

/**
     * @param  IOInterface $io             IO instance
     * @param  mixed       $config         either a configuration array or a filename to read from, if null it will read from
     *                                     the default filename
     * @param  bool        $disablePlugins Whether plugins should not be loaded
     * @param  bool        $disableScripts Whether scripts should not be run
     * @return Composer
     */
    public static function create(IOInterface $io, $config = null, $disablePlugins = false, $disableScripts = false)
    {
        $factory = new static();

return $factory->createComposer($io, $config, $disablePlugins, null, true, $disableScripts);
    }

/**
     * If you are calling this in a plugin, you probably should instead use $composer->getLoop()->getHttpDownloader()
     *
     * @param  IOInterface    $io      IO instance
     * @param  Config         $config  Config instance
     * @param  mixed[]        $options Array of options passed directly to HttpDownloader constructor
     * @return HttpDownloader
     */
    public static function createHttpDownloader(IOInterface $io, Config $config, $options = array())
    {
        static $warned = false;
        $disableTls = false;
        // allow running the config command if disable-tls is in the arg list, even if openssl is missing, to allow disabling it via the config command
        if (isset($_SERVER['argv']) && in_array('disable-tls', $_SERVER['argv']) && (in_array('conf', $_SERVER['argv']) || in_array('config', $_SERVER['argv']))) {
            $warned = true;
            $disableTls = !extension_loaded('openssl');
        } elseif ($config->get('disable-tls') === true) {
            if (!$warned) {
                $io->writeError('<warning>You are running Composer with SSL/TLS protection disabled.</warning>');
            }
            $warned = true;
            $disableTls = true;
        } elseif (!extension_loaded('openssl')) {
            throw new Exception\NoSslException('The openssl extension is required for SSL/TLS protection but is not available. '
                . 'If you can not enable the openssl extension, you can disable this error, at your own risk, by setting the \'disable-tls\' option to true.');
        }
        $httpDownloaderOptions = array();
        if ($disableTls === false) {
            if ($config->get('cafile')) {
                $httpDownloaderOptions['ssl']['cafile'] = $config->get('cafile');
            }
            if ($config->get('capath')) {
                $httpDownloaderOptions['ssl']['capath'] = $config->get('capath');
            }
            $httpDownloaderOptions = array_replace_recursive($httpDownloaderOptions, $options);
        }
        try {
            $httpDownloader = new HttpDownloader($io, $config, $httpDownloaderOptions, $disableTls);
        } catch (TransportException $e) {
            if (false !== strpos($e->getMessage(), 'cafile')) {
                $io->write('<error>Unable to locate a valid CA certificate file. You must set a valid \'cafile\' option.</error>');
                $io->write('<error>A valid CA certificate file is required for SSL/TLS protection.</error>');
                if (PHP_VERSION_ID < 50600) {
                    $io->write('<error>It is recommended you upgrade to PHP 5.6+ which can detect your system CA file automatically.</error>');
                }
                $io->write('<error>You can disable this error, at your own risk, by setting the \'disable-tls\' option to true.</error>');
            }
            throw $e;
        }

return $httpDownloader;
    }

/**
     * @return bool
     */
    private static function useXdg()
    {
        foreach (array_keys($_SERVER) as $key) {
            if (strpos($key, 'XDG_') === 0) {
                return true;
            }
        }

if (Silencer::call('is_dir', '/etc/xdg')) {
            return true;
        }

return false;
    }

/**
     * @throws \RuntimeException
     * @return string
     */
    private static function getUserDir()
    {
        $home = Platform::getEnv('HOME');
        if (!$home) {
            throw new \RuntimeException('The HOME or COMPOSER_HOME environment variable must be set for composer to run correctly');
        }

return rtrim(strtr($home, '\\', '/'), '/');
    }
}
<?php

namespace Composer;

use Composer\Autoload\AutoloadGenerator;
use Composer\Console\GithubActionError;
use Composer\DependencyResolver\DefaultPolicy;
use Composer\DependencyResolver\LocalRepoTransaction;
use Composer\DependencyResolver\LockTransaction;
use Composer\DependencyResolver\Operation\UpdateOperation;
use Composer\DependencyResolver\Operation\InstallOperation;
use Composer\DependencyResolver\Operation\UninstallOperation;
use Composer\DependencyResolver\PoolOptimizer;
use Composer\DependencyResolver\Pool;
use Composer\DependencyResolver\Request;
use Composer\DependencyResolver\Solver;
use Composer\DependencyResolver\SolverProblemsException;
use Composer\DependencyResolver\PolicyInterface;
use Composer\Downloader\DownloadManager;
use Composer\EventDispatcher\EventDispatcher;
use Composer\Filter\PlatformRequirementFilter\IgnoreListPlatformRequirementFilter;
use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterFactory;
use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterInterface;
use Composer\Installer\InstallationManager;
use Composer\Installer\InstallerEvents;
use Composer\Installer\SuggestedPackagesReporter;
use Composer\IO\IOInterface;
use Composer\Package\AliasPackage;
use Composer\Package\RootAliasPackage;
use Composer\Package\BasePackage;
use Composer\Package\CompletePackage;
use Composer\Package\CompletePackageInterface;
use Composer\Package\Link;
use Composer\Package\Loader\ArrayLoader;
use Composer\Package\Dumper\ArrayDumper;
use Composer\Package\Version\VersionParser;
use Composer\Package\Package;
use Composer\Repository\ArrayRepository;
use Composer\Repository\RepositorySet;
use Composer\Repository\CompositeRepository;
use Composer\Semver\Constraint\Constraint;
use Composer\Package\Locker;
use Composer\Package\RootPackageInterface;
use Composer\Repository\InstalledArrayRepository;
use Composer\Repository\InstalledRepositoryInterface;
use Composer\Repository\InstalledRepository;
use Composer\Repository\RootPackageRepository;
use Composer\Repository\PlatformRepository;
use Composer\Repository\RepositoryInterface;
use Composer\Repository\RepositoryManager;
use Composer\Repository\LockArrayRepository;
use Composer\Script\ScriptEvents;
use Composer\Util\Platform;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 * @author Beau Simensen <beau@dflydev.com>
 * @author Konstantin Kudryashov <ever.zet@gmail.com>
 * @author Nils Adermann <naderman@naderman.de>
 */
class Installer
{
    const ERROR_NONE = 0; // no error/success state
    const ERROR_GENERIC_FAILURE = 1;
    const ERROR_NO_LOCK_FILE_FOR_PARTIAL_UPDATE = 3;
    const ERROR_LOCK_FILE_INVALID = 4;
    // used/declared in SolverProblemsException, carried over here for completeness
    const ERROR_DEPENDENCY_RESOLUTION_FAILED = 2;

/**
     * @var IOInterface
     */
    protected $io;

/**
     * @var Config
     */
    protected $config;

/**
     * @var RootPackageInterface&BasePackage
     */
    protected $package;

// TODO can we get rid of the below and just use the package itself?
    /**
     * @var RootPackageInterface&BasePackage
     */
    protected $fixedRootPackage;

/**
     * @var DownloadManager
     */
    protected $downloadManager;

/**
     * @var RepositoryManager
     */
    protected $repositoryManager;

/**
     * @var Locker
     */
    protected $locker;

/**
     * @var InstallationManager
     */
    protected $installationManager;

/**
     * @var EventDispatcher
     */
    protected $eventDispatcher;

/**
     * @var AutoloadGenerator
     */
    protected $autoloadGenerator;

/** @var bool */
    protected $preferSource = false;
    /** @var bool */
    protected $preferDist = false;
    /** @var bool */
    protected $optimizeAutoloader = false;
    /** @var bool */
    protected $classMapAuthoritative = false;
    /** @var bool */
    protected $apcuAutoloader = false;
    /** @var string|null */
    protected $apcuAutoloaderPrefix = null;
    /** @var bool */
    protected $devMode = false;
    /** @var bool */
    protected $dryRun = false;
    /** @var bool */
    protected $verbose = false;
    /** @var bool */
    protected $update = false;
    /** @var bool */
    protected $install = true;
    /** @var bool */
    protected $dumpAutoloader = true;
    /** @var bool */
    protected $runScripts = true;
    /** @var bool */
    protected $preferStable = false;
    /** @var bool */
    protected $preferLowest = false;
    /** @var bool */
    protected $writeLock;
    /** @var bool */
    protected $executeOperations = true;

/** @var bool */
    protected $updateMirrors = false;
    /**
     * Array of package names/globs flagged for update
     *
     * @var string[]|null
     */
    protected $updateAllowList = null;
    /** @var Request::UPDATE_* */
    protected $updateAllowTransitiveDependencies = Request::UPDATE_ONLY_LISTED;

/**
     * @var SuggestedPackagesReporter
     */
    protected $suggestedPackagesReporter;

/**
     * @var PlatformRequirementFilterInterface
     */
    protected $platformRequirementFilter;

/**
     * @var ?RepositoryInterface
     */
    protected $additionalFixedRepository;

/**
     * Constructor
     *
     * @param IOInterface          $io
     * @param Config               $config
     * @param RootPackageInterface&BasePackage $package
     * @param DownloadManager      $downloadManager
     * @param RepositoryManager    $repositoryManager
     * @param Locker               $locker
     * @param InstallationManager  $installationManager
     * @param EventDispatcher      $eventDispatcher
     * @param AutoloadGenerator    $autoloadGenerator
     */
    public function __construct(IOInterface $io, Config $config, RootPackageInterface $package, DownloadManager $downloadManager, RepositoryManager $repositoryManager, Locker $locker, InstallationManager $installationManager, EventDispatcher $eventDispatcher, AutoloadGenerator $autoloadGenerator)
    {
        $this->io = $io;
        $this->config = $config;
        $this->package = $package;
        $this->downloadManager = $downloadManager;
        $this->repositoryManager = $repositoryManager;
        $this->locker = $locker;
        $this->installationManager = $installationManager;
        $this->eventDispatcher = $eventDispatcher;
        $this->autoloadGenerator = $autoloadGenerator;
        $this->suggestedPackagesReporter = new SuggestedPackagesReporter($this->io);
        $this->platformRequirementFilter = PlatformRequirementFilterFactory::ignoreNothing();

$this->writeLock = $config->get('lock');
    }

/**
     * Run installation (or update)
     *
     * @throws \Exception
     * @return int        0 on success or a positive error code on failure
     * @phpstan-return self::ERROR_*
     */
    public function run()
    {
        // Disable GC to save CPU cycles, as the dependency solver can create hundreds of thousands
        // of PHP objects, the GC can spend quite some time walking the tree of references looking
        // for stuff to collect while there is nothing to collect. This slows things down dramatically
        // and turning it off results in much better performance. Do not try this at home however.
        gc_collect_cycles();
        gc_disable();

if ($this->updateAllowList && $this->updateMirrors) {
            throw new \RuntimeException("The installer options updateMirrors and updateAllowList are mutually exclusive.");
        }

$isFreshInstall = $this->repositoryManager->getLocalRepository()->isFresh();

// Force update if there is no lock file present
        if (!$this->update && !$this->locker->isLocked()) {
            $this->io->writeError('<warning>No composer.lock file present. Updating dependencies to latest instead of installing from lock file. See https://getcomposer.org/install for more information.</warning>');
            $this->update = true;
        }

if ($this->dryRun) {
            $this->verbose = true;
            $this->runScripts = false;
            $this->executeOperations = false;
            $this->writeLock = false;
            $this->dumpAutoloader = false;
            $this->mockLocalRepositories($this->repositoryManager);
        }

if ($this->update && !$this->install) {
            $this->dumpAutoloader = false;
        }

if ($this->runScripts) {
            Platform::putEnv('COMPOSER_DEV_MODE', $this->devMode ? '1' : '0');

// dispatch pre event
            // should we treat this more strictly as running an update and then running an install, triggering events multiple times?
            $eventName = $this->update ? ScriptEvents::PRE_UPDATE_CMD : ScriptEvents::PRE_INSTALL_CMD;
            $this->eventDispatcher->dispatchScript($eventName, $this->devMode);
        }

$this->downloadManager->setPreferSource($this->preferSource);
        $this->downloadManager->setPreferDist($this->preferDist);

$localRepo = $this->repositoryManager->getLocalRepository();

try {
            if ($this->update) {
                $res = $this->doUpdate($localRepo, $this->install);
            } else {
                $res = $this->doInstall($localRepo);
            }
            if ($res !== 0) {
                return $res;
            }
        } catch (\Exception $e) {
            if ($this->executeOperations && $this->install && $this->config->get('notify-on-install')) {
                $this->installationManager->notifyInstalls($this->io);
            }

throw $e;
        }
        if ($this->executeOperations && $this->install && $this->config->get('notify-on-install')) {
            $this->installationManager->notifyInstalls($this->io);
        }

if ($this->update) {
            $installedRepo = new InstalledRepository(array(
                $this->locker->getLockedRepository($this->devMode),
                $this->createPlatformRepo(false),
                new RootPackageRepository(clone $this->package),
            ));
            if ($isFreshInstall) {
                $this->suggestedPackagesReporter->addSuggestionsFromPackage($this->package);
            }
            $this->suggestedPackagesReporter->outputMinimalistic($installedRepo);
        }

// Find abandoned packages and warn user
        $lockedRepository = $this->locker->getLockedRepository(true);
        foreach ($lockedRepository->getPackages() as $package) {
            if (!$package instanceof CompletePackage || !$package->isAbandoned()) {
                continue;
            }

$replacement = is_string($package->getReplacementPackage())
                ? 'Use ' . $package->getReplacementPackage() . ' instead'
                : 'No replacement was suggested';

$this->io->writeError(
                sprintf(
                    "<warning>Package %s is abandoned, you should avoid using it. %s.</warning>",
                    $package->getPrettyName(),
                    $replacement
                )
            );
        }

if ($this->dumpAutoloader) {
            // write autoloader
            if ($this->optimizeAutoloader) {
                $this->io->writeError('<info>Generating optimized autoload files</info>');
            } else {
                $this->io->writeError('<info>Generating autoload files</info>');
            }

$this->autoloadGenerator->setClassMapAuthoritative($this->classMapAuthoritative);
            $this->autoloadGenerator->setApcu($this->apcuAutoloader, $this->apcuAutoloaderPrefix);
            $this->autoloadGenerator->setRunScripts($this->runScripts);
            $this->autoloadGenerator->setPlatformRequirementFilter($this->platformRequirementFilter);
            $this->autoloadGenerator->dump($this->config, $localRepo, $this->package, $this->installationManager, 'composer', $this->optimizeAutoloader);
        }

if ($this->install && $this->executeOperations) {
            // force binaries re-generation in case they are missing
            foreach ($localRepo->getPackages() as $package) {
                $this->installationManager->ensureBinariesPresence($package);
            }
        }

$fundingCount = 0;
        foreach ($localRepo->getPackages() as $package) {
            if ($package instanceof CompletePackageInterface && !$package instanceof AliasPackage && $package->getFunding()) {
                $fundingCount++;
            }
        }
        if ($fundingCount > 0) {
            $this->io->writeError(array(
                sprintf(
                    "<info>%d package%s you are using %s looking for funding.</info>",
                    $fundingCount,
                    1 === $fundingCount ? '' : 's',
                    1 === $fundingCount ? 'is' : 'are'
                ),
                '<info>Use the `composer fund` command to find out more!</info>',
            ));
        }

if ($this->runScripts) {
            // dispatch post event
            $eventName = $this->update ? ScriptEvents::POST_UPDATE_CMD : ScriptEvents::POST_INSTALL_CMD;
            $this->eventDispatcher->dispatchScript($eventName, $this->devMode);
        }

// re-enable GC except on HHVM which triggers a warning here
        if (!defined('HHVM_VERSION')) {
            gc_enable();
        }

return 0;
    }

/**
     * @param bool $doInstall
     *
     * @return int
     * @phpstan-return self::ERROR_*
     */
    protected function doUpdate(InstalledRepositoryInterface $localRepo, $doInstall)
    {
        $platformRepo = $this->createPlatformRepo(true);
        $aliases = $this->getRootAliases(true);

$lockedRepository = null;

try {
            if ($this->locker->isLocked()) {
                $lockedRepository = $this->locker->getLockedRepository(true);
            }
        } catch (\Seld\JsonLint\ParsingException $e) {
            if ($this->updateAllowList || $this->updateMirrors) {
                // in case we are doing a partial update or updating mirrors, the lock file is needed so we error
                throw $e;
            }
            // otherwise, ignoring parse errors as the lock file will be regenerated from scratch when
            // doing a full update
        }

if (($this->updateAllowList || $this->updateMirrors) && !$lockedRepository) {
            $this->io->writeError('<error>Cannot update ' . ($this->updateMirrors ? 'lock file information' : 'only a partial set of packages') . ' without a lock file present. Run `composer update` to generate a lock file.</error>', true, IOInterface::QUIET);

return self::ERROR_NO_LOCK_FILE_FOR_PARTIAL_UPDATE;
        }

$this->io->writeError('<info>Loading composer repositories with package information</info>');

// creating repository set
        $policy = $this->createPolicy(true);
        $repositorySet = $this->createRepositorySet(true, $platformRepo, $aliases);
        $repositories = $this->repositoryManager->getRepositories();
        foreach ($repositories as $repository) {
            $repositorySet->addRepository($repository);
        }
        if ($lockedRepository) {
            $repositorySet->addRepository($lockedRepository);
        }

$request = $this->createRequest($this->fixedRootPackage, $platformRepo, $lockedRepository);
        $this->requirePackagesForUpdate($request, $lockedRepository, true);

// pass the allow list into the request, so the pool builder can apply it
        if ($this->updateAllowList) {
            $request->setUpdateAllowList($this->updateAllowList, $this->updateAllowTransitiveDependencies);
        }

$pool = $repositorySet->createPool($request, $this->io, $this->eventDispatcher, $this->createPoolOptimizer($policy));

$this->io->writeError('<info>Updating dependencies</info>');

// solve dependencies
        $solver = new Solver($policy, $pool, $this->io);
        try {
            $lockTransaction = $solver->solve($request, $this->platformRequirementFilter);
            $ruleSetSize = $solver->getRuleSetSize();
            $solver = null;
        } catch (SolverProblemsException $e) {
            $err = 'Your requirements could not be resolved to an installable set of packages.';
            $prettyProblem = $e->getPrettyString($repositorySet, $request, $pool, $this->io->isVerbose());

$this->io->writeError('<error>'. $err .'</error>', true, IOInterface::QUIET);
            $this->io->writeError($prettyProblem);
            if (!$this->devMode) {
                $this->io->writeError('<warning>Running update with --no-dev does not mean require-dev is ignored, it just means the packages will not be installed. If dev requirements are blocking the update you have to resolve those problems.</warning>', true, IOInterface::QUIET);
            }

$ghe = new GithubActionError($this->io);
            $ghe->emit($err."\n".$prettyProblem);

return max(self::ERROR_GENERIC_FAILURE, $e->getCode());
        }

$this->io->writeError("Analyzed ".count($pool)." packages to resolve dependencies", true, IOInterface::VERBOSE);
        $this->io->writeError("Analyzed ".$ruleSetSize." rules to resolve dependencies", true, IOInterface::VERBOSE);

$pool = null;

if (!$lockTransaction->getOperations()) {
            $this->io->writeError('Nothing to modify in lock file');
        }

$exitCode = $this->extractDevPackages($lockTransaction, $platformRepo, $aliases, $policy, $lockedRepository);
        if ($exitCode !== 0) {
            return $exitCode;
        }

// write lock
        $platformReqs = $this->extractPlatformRequirements($this->package->getRequires());
        $platformDevReqs = $this->extractPlatformRequirements($this->package->getDevRequires());

$installsUpdates = $uninstalls = array();
        if ($lockTransaction->getOperations()) {
            $installNames = $updateNames = $uninstallNames = array();
            foreach ($lockTransaction->getOperations() as $operation) {
                if ($operation instanceof InstallOperation) {
                    $installsUpdates[] = $operation;
                    $installNames[] = $operation->getPackage()->getPrettyName().':'.$operation->getPackage()->getFullPrettyVersion();
                } elseif ($operation instanceof UpdateOperation) {
                    // when mirrors/metadata from a package gets updated we do not want to list it as an
                    // update in the output as it is only an internal lock file metadata update
                    if ($this->updateMirrors
                        && $operation->getInitialPackage()->getName() == $operation->getTargetPackage()->getName()
                        && $operation->getInitialPackage()->getVersion() == $operation->getTargetPackage()->getVersion()
                    ) {
                        continue;
                    }

$installsUpdates[] = $operation;
                    $updateNames[] = $operation->getTargetPackage()->getPrettyName().':'.$operation->getTargetPackage()->getFullPrettyVersion();
                } elseif ($operation instanceof UninstallOperation) {
                    $uninstalls[] = $operation;
                    $uninstallNames[] = $operation->getPackage()->getPrettyName();
                }
            }

$this->io->writeError(sprintf(
                "<info>Lock file operations: %d install%s, %d update%s, %d removal%s</info>",
                count($installNames),
                1 === count($installNames) ? '' : 's',
                count($updateNames),
                1 === count($updateNames) ? '' : 's',
                count($uninstalls),
                1 === count($uninstalls) ? '' : 's'
            ));
            if ($installNames) {
                $this->io->writeError("Installs: ".implode(', ', $installNames), true, IOInterface::VERBOSE);
            }
            if ($updateNames) {
                $this->io->writeError("Updates: ".implode(', ', $updateNames), true, IOInterface::VERBOSE);
            }
            if ($uninstalls) {
                $this->io->writeError("Removals: ".implode(', ', $uninstallNames), true, IOInterface::VERBOSE);
            }
        }

$sortByName = function ($a, $b) {
            if ($a instanceof UpdateOperation) {
                $a = $a->getTargetPackage()->getName();
            } else {
                $a = $a->getPackage()->getName();
            }
            if ($b instanceof UpdateOperation) {
                $b = $b->getTargetPackage()->getName();
            } else {
                $b = $b->getPackage()->getName();
            }

return strcmp($a, $b);
        };
        usort($uninstalls, $sortByName);
        usort($installsUpdates, $sortByName);

foreach (array_merge($uninstalls, $installsUpdates) as $operation) {
            // collect suggestions
            if ($operation instanceof InstallOperation) {
                $this->suggestedPackagesReporter->addSuggestionsFromPackage($operation->getPackage());
            }

// output op, but alias op only in debug verbosity
            if (false === strpos($operation->getOperationType(), 'Alias') || $this->io->isDebug()) {
                $this->io->writeError('  - ' . $operation->show(true));
            }
        }

$updatedLock = $this->locker->setLockData(
            $lockTransaction->getNewLockPackages(false, $this->updateMirrors),
            $lockTransaction->getNewLockPackages(true, $this->updateMirrors),
            $platformReqs,
            $platformDevReqs,
            $lockTransaction->getAliases($aliases),
            $this->package->getMinimumStability(),
            $this->package->getStabilityFlags(),
            $this->preferStable || $this->package->getPreferStable(),
            $this->preferLowest,
            $this->config->get('platform') ?: array(),
            $this->writeLock && $this->executeOperations
        );
        if ($updatedLock && $this->writeLock && $this->executeOperations) {
            $this->io->writeError('<info>Writing lock file</info>');
        }

// see https://github.com/composer/composer/issues/2764
        if ($this->executeOperations && count($lockTransaction->getOperations()) > 0) {
            $vendorDir = $this->config->get('vendor-dir');
            if (is_dir($vendorDir)) {
                // suppress errors as this fails sometimes on OSX for no apparent reason
                // see https://github.com/composer/composer/issues/4070#issuecomment-129792748
                @touch($vendorDir);
            }
        }

if ($doInstall) {
            // TODO ensure lock is used from locker as-is, since it may not have been written to disk in case of executeOperations == false
            return $this->doInstall($localRepo, true);
        }

return 0;
    }

/**
     * Run the solver a second time on top of the existing update result with only the current result set in the pool
     * and see what packages would get removed if we only had the non-dev packages in the solver request
     *
     * @param array<int, array<string, string>> $aliases
     *
     * @return int
     *
     * @phpstan-param list<array{package: string, version: string, alias: string, alias_normalized: string}> $aliases
     * @phpstan-return self::ERROR_*
     */
    protected function extractDevPackages(LockTransaction $lockTransaction, PlatformRepository $platformRepo, array $aliases, PolicyInterface $policy, LockArrayRepository $lockedRepository = null)
    {
        if (!$this->package->getDevRequires()) {
            return 0;
        }

$resultRepo = new ArrayRepository(array());
        $loader = new ArrayLoader(null, true);
        $dumper = new ArrayDumper();
        foreach ($lockTransaction->getNewLockPackages(false) as $pkg) {
            $resultRepo->addPackage($loader->load($dumper->dump($pkg)));
        }

$repositorySet = $this->createRepositorySet(true, $platformRepo, $aliases);
        $repositorySet->addRepository($resultRepo);

$request = $this->createRequest($this->fixedRootPackage, $platformRepo);
        $this->requirePackagesForUpdate($request, $lockedRepository, false);

$pool = $repositorySet->createPoolWithAllPackages();

$solver = new Solver($policy, $pool, $this->io);
        try {
            $nonDevLockTransaction = $solver->solve($request, $this->platformRequirementFilter);
            $solver = null;
        } catch (SolverProblemsException $e) {
            $err = 'Unable to find a compatible set of packages based on your non-dev requirements alone.';
            $prettyProblem = $e->getPrettyString($repositorySet, $request, $pool, $this->io->isVerbose(), true);

$this->io->writeError('<error>'. $err .'</error>', true, IOInterface::QUIET);
            $this->io->writeError('Your requirements can be resolved successfully when require-dev packages are present.');
            $this->io->writeError('You may need to move packages from require-dev or some of their dependencies to require.');
            $this->io->writeError($prettyProblem);

$ghe = new GithubActionError($this->io);
            $ghe->emit($err."\n".$prettyProblem);

return $e->getCode();
        }

$lockTransaction->setNonDevPackages($nonDevLockTransaction);

return 0;
    }

/**
     * @param  InstalledRepositoryInterface $localRepo
     * @param  bool                         $alreadySolved Whether the function is called as part of an update command or independently
     * @return int                          exit code
     * @phpstan-return self::ERROR_*
     */
    protected function doInstall(InstalledRepositoryInterface $localRepo, $alreadySolved = false)
    {
        $this->io->writeError('<info>Installing dependencies from lock file'.($this->devMode ? ' (including require-dev)' : '').'</info>');

$lockedRepository = $this->locker->getLockedRepository($this->devMode);

// verify that the lock file works with the current platform repository
        // we can skip this part if we're doing this as the second step after an update
        if (!$alreadySolved) {
            $this->io->writeError('<info>Verifying lock file contents can be installed on current platform.</info>');

$platformRepo = $this->createPlatformRepo(false);
            // creating repository set
            $policy = $this->createPolicy(false);
            // use aliases from lock file only, so empty root aliases here
            $repositorySet = $this->createRepositorySet(false, $platformRepo, array(), $lockedRepository);
            $repositorySet->addRepository($lockedRepository);

// creating requirements request
            $request = $this->createRequest($this->fixedRootPackage, $platformRepo, $lockedRepository);

if (!$this->locker->isFresh()) {
                $this->io->writeError('<warning>Warning: The lock file is not up to date with the latest changes in composer.json. You may be getting outdated dependencies. It is recommended that you run `composer update` or `composer update <package name>`.</warning>', true, IOInterface::QUIET);
            }

foreach ($lockedRepository->getPackages() as $package) {
                $request->fixLockedPackage($package);
            }

foreach ($this->locker->getPlatformRequirements($this->devMode) as $link) {
                $request->requireName($link->getTarget(), $link->getConstraint());
            }

$pool = $repositorySet->createPool($request, $this->io, $this->eventDispatcher);

// solve dependencies
            $solver = new Solver($policy, $pool, $this->io);
            try {
                $lockTransaction = $solver->solve($request, $this->platformRequirementFilter);
                $solver = null;

// installing the locked packages on this platform resulted in lock modifying operations, there wasn't a conflict, but the lock file as-is seems to not work on this system
                if (0 !== count($lockTransaction->getOperations())) {
                    $this->io->writeError('<error>Your lock file cannot be installed on this system without changes. Please run composer update.</error>', true, IOInterface::QUIET);

return self::ERROR_LOCK_FILE_INVALID;
                }
            } catch (SolverProblemsException $e) {
                $err = 'Your lock file does not contain a compatible set of packages. Please run composer update.';
                $prettyProblem = $e->getPrettyString($repositorySet, $request, $pool, $this->io->isVerbose());

$this->io->writeError('<error>'. $err .'</error>', true, IOInterface::QUIET);
                $this->io->writeError($prettyProblem);

$ghe = new GithubActionError($this->io);
                $ghe->emit($err."\n".$prettyProblem);

return max(self::ERROR_GENERIC_FAILURE, $e->getCode());
            }
        }

// TODO in how far do we need to do anything here to ensure dev packages being updated to latest in lock without version change are treated correctly?
        $localRepoTransaction = new LocalRepoTransaction($lockedRepository, $localRepo);
        $this->eventDispatcher->dispatchInstallerEvent(InstallerEvents::PRE_OPERATIONS_EXEC, $this->devMode, $this->executeOperations, $localRepoTransaction);

if (!$localRepoTransaction->getOperations()) {
            $this->io->writeError('Nothing to install, update or remove');
        }

if ($localRepoTransaction->getOperations()) {
            $installs = $updates = $uninstalls = array();
            foreach ($localRepoTransaction->getOperations() as $operation) {
                if ($operation instanceof InstallOperation) {
                    $installs[] = $operation->getPackage()->getPrettyName().':'.$operation->getPackage()->getFullPrettyVersion();
                } elseif ($operation instanceof UpdateOperation) {
                    $updates[] = $operation->getTargetPackage()->getPrettyName().':'.$operation->getTargetPackage()->getFullPrettyVersion();
                } elseif ($operation instanceof UninstallOperation) {
                    $uninstalls[] = $operation->getPackage()->getPrettyName();
                }
            }

$this->io->writeError(sprintf(
                "<info>Package operations: %d install%s, %d update%s, %d removal%s</info>",
                count($installs),
                1 === count($installs) ? '' : 's',
                count($updates),
                1 === count($updates) ? '' : 's',
                count($uninstalls),
                1 === count($uninstalls) ? '' : 's'
            ));
            if ($installs) {
                $this->io->writeError("Installs: ".implode(', ', $installs), true, IOInterface::VERBOSE);
            }
            if ($updates) {
                $this->io->writeError("Updates: ".implode(', ', $updates), true, IOInterface::VERBOSE);
            }
            if ($uninstalls) {
                $this->io->writeError("Removals: ".implode(', ', $uninstalls), true, IOInterface::VERBOSE);
            }
        }

if ($this->executeOperations) {
            $localRepo->setDevPackageNames($this->locker->getDevPackageNames());
            $this->installationManager->execute($localRepo, $localRepoTransaction->getOperations(), $this->devMode, $this->runScripts);
        } else {
            foreach ($localRepoTransaction->getOperations() as $operation) {
                // output op, but alias op only in debug verbosity
                if (false === strpos($operation->getOperationType(), 'Alias') || $this->io->isDebug()) {
                    $this->io->writeError('  - ' . $operation->show(false));
                }
            }
        }

return 0;
    }

/**
     * @param bool $forUpdate
     *
     * @return PlatformRepository
     */
    protected function createPlatformRepo($forUpdate)
    {
        if ($forUpdate) {
            $platformOverrides = $this->config->get('platform') ?: array();
        } else {
            $platformOverrides = $this->locker->getPlatformOverrides();
        }

return new PlatformRepository(array(), $platformOverrides);
    }

/**
     * @param  bool                              $forUpdate
     * @param  array<int, array<string, string>> $rootAliases
     * @param  RepositoryInterface|null          $lockedRepository
     *
     * @return RepositorySet
     *
     * @phpstan-param list<array{package: string, version: string, alias: string, alias_normalized: string}> $rootAliases
     */
    private function createRepositorySet($forUpdate, PlatformRepository $platformRepo, array $rootAliases = array(), $lockedRepository = null)
    {
        if ($forUpdate) {
            $minimumStability = $this->package->getMinimumStability();
            $stabilityFlags = $this->package->getStabilityFlags();

$requires = array_merge($this->package->getRequires(), $this->package->getDevRequires());
        } else {
            $minimumStability = $this->locker->getMinimumStability();
            $stabilityFlags = $this->locker->getStabilityFlags();

$requires = array();
            foreach ($lockedRepository->getPackages() as $package) {
                $constraint = new Constraint('=', $package->getVersion());
                $constraint->setPrettyString($package->getPrettyVersion());
                $requires[$package->getName()] = $constraint;
            }
        }

$rootRequires = array();
        foreach ($requires as $req => $constraint) {
            if ($constraint instanceof Link) {
                $constraint = $constraint->getConstraint();
            }
            // skip platform requirements from the root package to avoid filtering out existing platform packages
            if ($this->platformRequirementFilter->isIgnored($req)) {
                continue;
            } elseif ($this->platformRequirementFilter instanceof IgnoreListPlatformRequirementFilter) {
                $constraint = $this->platformRequirementFilter->filterConstraint($req, $constraint);
            }
            $rootRequires[$req] = $constraint;
        }

$this->fixedRootPackage = clone $this->package;
        $this->fixedRootPackage->setRequires(array());
        $this->fixedRootPackage->setDevRequires(array());

$stabilityFlags[$this->package->getName()] = BasePackage::$stabilities[VersionParser::parseStability($this->package->getVersion())];

$repositorySet = new RepositorySet($minimumStability, $stabilityFlags, $rootAliases, $this->package->getReferences(), $rootRequires);
        $repositorySet->addRepository(new RootPackageRepository($this->fixedRootPackage));
        $repositorySet->addRepository($platformRepo);
        if ($this->additionalFixedRepository) {
            // allow using installed repos if needed to avoid warnings about installed repositories being used in the RepositorySet
            // see https://github.com/composer/composer/pull/9574
            $additionalFixedRepositories = $this->additionalFixedRepository;
            if ($additionalFixedRepositories instanceof CompositeRepository) {
                $additionalFixedRepositories = $additionalFixedRepositories->getRepositories();
            } else {
                $additionalFixedRepositories = array($additionalFixedRepositories);
            }
            foreach ($additionalFixedRepositories as $additionalFixedRepository) {
                if ($additionalFixedRepository instanceof InstalledRepository || $additionalFixedRepository instanceof InstalledRepositoryInterface) {
                    $repositorySet->allowInstalledRepositories();
                    break;
                }
            }

$repositorySet->addRepository($this->additionalFixedRepository);
        }

return $repositorySet;
    }

/**
     * @param bool $forUpdate
     *
     * @return DefaultPolicy
     */
    private function createPolicy($forUpdate)
    {
        $preferStable = null;
        $preferLowest = null;
        if (!$forUpdate) {
            $preferStable = $this->locker->getPreferStable();
            $preferLowest = $this->locker->getPreferLowest();
        }
        // old lock file without prefer stable/lowest will return null
        // so in this case we use the composer.json info
        if (null === $preferStable) {
            $preferStable = $this->preferStable || $this->package->getPreferStable();
        }
        if (null === $preferLowest) {
            $preferLowest = $this->preferLowest;
        }

return new DefaultPolicy($preferStable, $preferLowest);
    }

/**
     * @param RootPackageInterface&BasePackage $rootPackage
     * @return Request
     */
    private function createRequest(RootPackageInterface $rootPackage, PlatformRepository $platformRepo, LockArrayRepository $lockedRepository = null)
    {
        $request = new Request($lockedRepository);

$request->fixPackage($rootPackage);
        if ($rootPackage instanceof RootAliasPackage) {
            $request->fixPackage($rootPackage->getAliasOf());
        }

$fixedPackages = $platformRepo->getPackages();
        if ($this->additionalFixedRepository) {
            $fixedPackages = array_merge($fixedPackages, $this->additionalFixedRepository->getPackages());
        }

// fix the version of all platform packages + additionally installed packages
        // to prevent the solver trying to remove or update those
        // TODO why not replaces?
        $provided = $rootPackage->getProvides();
        foreach ($fixedPackages as $package) {
            // skip platform packages that are provided by the root package
            if ($package->getRepository() !== $platformRepo
                || !isset($provided[$package->getName()])
                || !$provided[$package->getName()]->getConstraint()->matches(new Constraint('=', $package->getVersion()))
            ) {
                $request->fixPackage($package);
            }
        }

return $request;
    }

/**
     * @param LockArrayRepository|null $lockedRepository
     * @param bool                     $includeDevRequires
     *
     * @return void
     */
    private function requirePackagesForUpdate(Request $request, LockArrayRepository $lockedRepository = null, $includeDevRequires = true)
    {
        // if we're updating mirrors we want to keep exactly the same versions installed which are in the lock file, but we want current remote metadata
        if ($this->updateMirrors) {
            $excludedPackages = array();
            if (!$includeDevRequires) {
                $excludedPackages = array_flip($this->locker->getDevPackageNames());
            }

foreach ($lockedRepository->getPackages() as $lockedPackage) {
                // exclude alias packages here as for root aliases, both alias and aliased are
                // present in the lock repo and we only want to require the aliased version
                if (!$lockedPackage instanceof AliasPackage && !isset($excludedPackages[$lockedPackage->getName()])) {
                    $request->requireName($lockedPackage->getName(), new Constraint('==', $lockedPackage->getVersion()));
                }
            }
        } else {
            $links = $this->package->getRequires();
            if ($includeDevRequires) {
                $links = array_merge($links, $this->package->getDevRequires());
            }
            foreach ($links as $link) {
                $request->requireName($link->getTarget(), $link->getConstraint());
            }
        }
    }

/**
     * @param bool $forUpdate
     *
     * @return array<int, array<string, string>>
     *
     * @phpstan-return list<array{package: string, version: string, alias: string, alias_normalized: string}>
     */
    private function getRootAliases($forUpdate)
    {
        if ($forUpdate) {
            $aliases = $this->package->getAliases();
        } else {
            $aliases = $this->locker->getAliases();
        }

return $aliases;
    }

/**
     * @param Link[] $links
     *
     * @return array<string, string>
     */
    private function extractPlatformRequirements(array $links)
    {
        $platformReqs = array();
        foreach ($links as $link) {
            if (PlatformRepository::isPlatformPackage($link->getTarget())) {
                $platformReqs[$link->getTarget()] = $link->getPrettyConstraint();
            }
        }

return $platformReqs;
    }

/**
     * Replace local repositories with InstalledArrayRepository instances
     *
     * This is to prevent any accidental modification of the existing repos on disk
     *
     * @return void
     */
    private function mockLocalRepositories(RepositoryManager $rm)
    {
        $packages = array();
        foreach ($rm->getLocalRepository()->getPackages() as $package) {
            $packages[(string) $package] = clone $package;
        }
        foreach ($packages as $key => $package) {
            if ($package instanceof AliasPackage) {
                $alias = (string) $package->getAliasOf();
                $className = get_class($package);
                $packages[$key] = new $className($packages[$alias], $package->getVersion(), $package->getPrettyVersion());
            }
        }
        $rm->setLocalRepository(
            new InstalledArrayRepository($packages)
        );
    }

/**
     * @return PoolOptimizer|null
     */
    private function createPoolOptimizer(PolicyInterface $policy)
    {
        // Not the best architectural decision here, would need to be able
        // to configure from the outside of Installer but this is only
        // a debugging tool and should never be required in any other use case
        if ('0' === Platform::getEnv('COMPOSER_POOL_OPTIMIZER')) {
            $this->io->write('Pool Optimizer was disabled for debugging purposes.', true, IOInterface::DEBUG);

return null;
        }

return new PoolOptimizer($policy);
    }

/**
     * Create Installer
     *
     * @param  IOInterface $io
     * @param  Composer    $composer
     * @return Installer
     */
    public static function create(IOInterface $io, Composer $composer)
    {
        return new static(
            $io,
            $composer->getConfig(),
            $composer->getPackage(),
            $composer->getDownloadManager(),
            $composer->getRepositoryManager(),
            $composer->getLocker(),
            $composer->getInstallationManager(),
            $composer->getEventDispatcher(),
            $composer->getAutoloadGenerator()
        );
    }

/**
     * @param  RepositoryInterface $additionalFixedRepository
     * @return $this
     */
    public function setAdditionalFixedRepository(RepositoryInterface $additionalFixedRepository)
    {
        $this->additionalFixedRepository = $additionalFixedRepository;

return $this;
    }

/**
     * Whether to run in drymode or not
     *
     * @param  bool      $dryRun
     * @return Installer
     */
    public function setDryRun($dryRun = true)
    {
        $this->dryRun = (bool) $dryRun;

return $this;
    }

/**
     * Checks, if this is a dry run (simulation mode).
     *
     * @return bool
     */
    public function isDryRun()
    {
        return $this->dryRun;
    }

/**
     * prefer source installation
     *
     * @param  bool      $preferSource
     * @return Installer
     */
    public function setPreferSource($preferSource = true)
    {
        $this->preferSource = (bool) $preferSource;

return $this;
    }

/**
     * prefer dist installation
     *
     * @param  bool      $preferDist
     * @return Installer
     */
    public function setPreferDist($preferDist = true)
    {
        $this->preferDist = (bool) $preferDist;

return $this;
    }

/**
     * Whether or not generated autoloader are optimized
     *
     * @param  bool      $optimizeAutoloader
     * @return Installer
     */
    public function setOptimizeAutoloader($optimizeAutoloader)
    {
        $this->optimizeAutoloader = (bool) $optimizeAutoloader;
        if (!$this->optimizeAutoloader) {
            // Force classMapAuthoritative off when not optimizing the
            // autoloader
            $this->setClassMapAuthoritative(false);
        }

return $this;
    }

/**
     * Whether or not generated autoloader considers the class map
     * authoritative.
     *
     * @param  bool      $classMapAuthoritative
     * @return Installer
     */
    public function setClassMapAuthoritative($classMapAuthoritative)
    {
        $this->classMapAuthoritative = (bool) $classMapAuthoritative;
        if ($this->classMapAuthoritative) {
            // Force optimizeAutoloader when classmap is authoritative
            $this->setOptimizeAutoloader(true);
        }

return $this;
    }

/**
     * Whether or not generated autoloader considers APCu caching.
     *
     * @param  bool        $apcuAutoloader
     * @param  string|null $apcuAutoloaderPrefix
     * @return Installer
     */
    public function setApcuAutoloader($apcuAutoloader, $apcuAutoloaderPrefix = null)
    {
        $this->apcuAutoloader = $apcuAutoloader;
        $this->apcuAutoloaderPrefix = $apcuAutoloaderPrefix;

return $this;
    }

/**
     * update packages
     *
     * @param  bool      $update
     * @return Installer
     */
    public function setUpdate($update)
    {
        $this->update = (bool) $update;

return $this;
    }

/**
     * Allows disabling the install step after an update
     *
     * @param  bool      $install
     * @return Installer
     */
    public function setInstall($install)
    {
        $this->install = (bool) $install;

return $this;
    }

/**
     * enables dev packages
     *
     * @param  bool      $devMode
     * @return Installer
     */
    public function setDevMode($devMode = true)
    {
        $this->devMode = (bool) $devMode;

return $this;
    }

/**
     * set whether to run autoloader or not
     *
     * This is disabled implicitly when enabling dryRun
     *
     * @param  bool      $dumpAutoloader
     * @return Installer
     */
    public function setDumpAutoloader($dumpAutoloader = true)
    {
        $this->dumpAutoloader = (bool) $dumpAutoloader;

return $this;
    }

/**
     * set whether to run scripts or not
     *
     * This is disabled implicitly when enabling dryRun
     *
     * @param  bool      $runScripts
     * @return Installer
     * @deprecated Use setRunScripts(false) on the EventDispatcher instance being injected instead
     */
    public function setRunScripts($runScripts = true)
    {
        $this->runScripts = (bool) $runScripts;

return $this;
    }

/**
     * set the config instance
     *
     * @param  Config    $config
     * @return Installer
     */
    public function setConfig(Config $config)
    {
        $this->config = $config;

return $this;
    }

/**
     * run in verbose mode
     *
     * @param  bool      $verbose
     * @return Installer
     */
    public function setVerbose($verbose = true)
    {
        $this->verbose = (bool) $verbose;

return $this;
    }

/**
     * Checks, if running in verbose mode.
     *
     * @return bool
     */
    public function isVerbose()
    {
        return $this->verbose;
    }

/**
     * set ignore Platform Package requirements
     *
     * If this is set to true, all platform requirements are ignored
     * If this is set to false, no platform requirements are ignored
     * If this is set to string[], those packages will be ignored
     *
     * @param  bool|string[] $ignorePlatformReqs
     *
     * @return Installer
     *
     * @deprecated use setPlatformRequirementFilter instead
     */
    public function setIgnorePlatformRequirements($ignorePlatformReqs)
    {
        trigger_error('Installer::setIgnorePlatformRequirements is deprecated since Composer 2.2, use setPlatformRequirementFilter instead.', E_USER_DEPRECATED);

return $this->setPlatformRequirementFilter(PlatformRequirementFilterFactory::fromBoolOrList($ignorePlatformReqs));
    }

/**
     * @param PlatformRequirementFilterInterface $platformRequirementFilter
     * @return Installer
     */
    public function setPlatformRequirementFilter(PlatformRequirementFilterInterface $platformRequirementFilter)
    {
        $this->platformRequirementFilter = $platformRequirementFilter;

return $this;
    }

/**
     * Update the lock file to the exact same versions and references but use current remote metadata like URLs and mirror info
     *
     * @param  bool      $updateMirrors
     * @return Installer
     */
    public function setUpdateMirrors($updateMirrors)
    {
        $this->updateMirrors = $updateMirrors;

return $this;
    }

/**
     * restrict the update operation to a few packages, all other packages
     * that are already installed will be kept at their current version
     *
     * @param string[] $packages
     *
     * @return Installer
     */
    public function setUpdateAllowList(array $packages)
    {
        $this->updateAllowList = array_flip(array_map('strtolower', $packages));

return $this;
    }

/**
     * Should dependencies of packages marked for update be updated?
     *
     * Depending on the chosen constant this will either only update the directly named packages, all transitive
     * dependencies which are not root requirement or all transitive dependencies including root requirements
     *
     * @param  int       $updateAllowTransitiveDependencies One of the UPDATE_ constants on the Request class
     * @return Installer
     */
    public function setUpdateAllowTransitiveDependencies($updateAllowTransitiveDependencies)
    {
        if (!in_array($updateAllowTransitiveDependencies, array(Request::UPDATE_ONLY_LISTED, Request::UPDATE_LISTED_WITH_TRANSITIVE_DEPS_NO_ROOT_REQUIRE, Request::UPDATE_LISTED_WITH_TRANSITIVE_DEPS), true)) {
            throw new \RuntimeException("Invalid value for updateAllowTransitiveDependencies supplied");
        }

$this->updateAllowTransitiveDependencies = $updateAllowTransitiveDependencies;

return $this;
    }

/**
     * Should packages be preferred in a stable version when updating?
     *
     * @param  bool      $preferStable
     * @return Installer
     */
    public function setPreferStable($preferStable = true)
    {
        $this->preferStable = (bool) $preferStable;

return $this;
    }

/**
     * Should packages be preferred in a lowest version when updating?
     *
     * @param  bool      $preferLowest
     * @return Installer
     */
    public function setPreferLowest($preferLowest = true)
    {
        $this->preferLowest = (bool) $preferLowest;

return $this;
    }

/**
     * Should the lock file be updated when updating?
     *
     * This is disabled implicitly when enabling dryRun
     *
     * @param  bool      $writeLock
     * @return Installer
     */
    public function setWriteLock($writeLock = true)
    {
        $this->writeLock = (bool) $writeLock;

return $this;
    }

/**
     * Should the operations (package install, update and removal) be executed on disk?
     *
     * This is disabled implicitly when enabling dryRun
     *
     * @param  bool      $executeOperations
     * @return Installer
     */
    public function setExecuteOperations($executeOperations = true)
    {
        $this->executeOperations = (bool) $executeOperations;

return $this;
    }

/**
     * Disables plugins.
     *
     * Call this if you want to ensure that third-party code never gets
     * executed. The default is to automatically install, and execute
     * custom third-party installers.
     *
     * @return Installer
     */
    public function disablePlugins()
    {
        $this->installationManager->disablePlugins();

return $this;
    }

/**
     * @param  SuggestedPackagesReporter $suggestedPackagesReporter
     * @return Installer
     */
    public function setSuggestedPackagesReporter(SuggestedPackagesReporter $suggestedPackagesReporter)
    {
        $this->suggestedPackagesReporter = $suggestedPackagesReporter;

return $this;
    }
}
<?php

namespace Composer\IO;

use Composer\Question\StrictConfirmationQuestion;
use Symfony\Component\Console\Helper\HelperSet;
use Symfony\Component\Console\Helper\ProgressBar;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\ConsoleOutputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Question\ChoiceQuestion;
use Symfony\Component\Console\Question\Question;

/**
 * The Input/Output helper.
 *
 * @author François Pluchino <francois.pluchino@opendisplay.com>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class ConsoleIO extends BaseIO
{
    /** @var InputInterface */
    protected $input;
    /** @var OutputInterface */
    protected $output;
    /** @var HelperSet */
    protected $helperSet;
    /** @var string */
    protected $lastMessage = '';
    /** @var string */
    protected $lastMessageErr = '';

/** @var float */
    private $startTime;
    /** @var array<int, int> */
    private $verbosityMap;

/**
     * Constructor.
     *
     * @param InputInterface  $input     The input instance
     * @param OutputInterface $output    The output instance
     * @param HelperSet       $helperSet The helperSet instance
     */
    public function __construct(InputInterface $input, OutputInterface $output, HelperSet $helperSet)
    {
        $this->input = $input;
        $this->output = $output;
        $this->helperSet = $helperSet;
        $this->verbosityMap = array(
            self::QUIET => OutputInterface::VERBOSITY_QUIET,
            self::NORMAL => OutputInterface::VERBOSITY_NORMAL,
            self::VERBOSE => OutputInterface::VERBOSITY_VERBOSE,
            self::VERY_VERBOSE => OutputInterface::VERBOSITY_VERY_VERBOSE,
            self::DEBUG => OutputInterface::VERBOSITY_DEBUG,
        );
    }

/**
     * @param float $startTime
     *
     * @return void
     */
    public function enableDebugging($startTime)
    {
        $this->startTime = $startTime;
    }

/**
     * @inheritDoc
     */
    public function isInteractive()
    {
        return $this->input->isInteractive();
    }

/**
     * @inheritDoc
     */
    public function isDecorated()
    {
        return $this->output->isDecorated();
    }

/**
     * @inheritDoc
     */
    public function isVerbose()
    {
        return $this->output->getVerbosity() >= OutputInterface::VERBOSITY_VERBOSE;
    }

/**
     * @inheritDoc
     */
    public function isVeryVerbose()
    {
        return $this->output->getVerbosity() >= OutputInterface::VERBOSITY_VERY_VERBOSE;
    }

/**
     * @inheritDoc
     */
    public function isDebug()
    {
        return $this->output->getVerbosity() >= OutputInterface::VERBOSITY_DEBUG;
    }

/**
     * @inheritDoc
     */
    public function write($messages, $newline = true, $verbosity = self::NORMAL)
    {
        $this->doWrite($messages, $newline, false, $verbosity);
    }

/**
     * @inheritDoc
     */
    public function writeError($messages, $newline = true, $verbosity = self::NORMAL)
    {
        $this->doWrite($messages, $newline, true, $verbosity);
    }

/**
     * @inheritDoc
     */
    public function writeRaw($messages, $newline = true, $verbosity = self::NORMAL)
    {
        $this->doWrite($messages, $newline, false, $verbosity, true);
    }

/**
     * @inheritDoc
     */
    public function writeErrorRaw($messages, $newline = true, $verbosity = self::NORMAL)
    {
        $this->doWrite($messages, $newline, true, $verbosity, true);
    }

/**
     * @param string[]|string $messages
     * @param bool                 $newline
     * @param bool                 $stderr
     * @param int                  $verbosity
     * @param bool                 $raw
     *
     * @return void
     */
    private function doWrite($messages, $newline, $stderr, $verbosity, $raw = false)
    {
        $sfVerbosity = $this->verbosityMap[$verbosity];
        if ($sfVerbosity > $this->output->getVerbosity()) {
            return;
        }

if ($raw) {
            if ($sfVerbosity === OutputInterface::OUTPUT_NORMAL) {
                $sfVerbosity = OutputInterface::OUTPUT_RAW;
            } else {
                $sfVerbosity |= OutputInterface::OUTPUT_RAW;
            }
        }

if (null !== $this->startTime) {
            $memoryUsage = memory_get_usage() / 1024 / 1024;
            $timeSpent = microtime(true) - $this->startTime;
            $messages = array_map(function ($message) use ($memoryUsage, $timeSpent) {
                return sprintf('[%.1fMiB/%.2fs] %s', $memoryUsage, $timeSpent, $message);
            }, (array) $messages);
        }

if (true === $stderr && $this->output instanceof ConsoleOutputInterface) {
            $this->output->getErrorOutput()->write($messages, $newline, $sfVerbosity);
            $this->lastMessageErr = implode($newline ? "\n" : '', (array) $messages);

return;
        }

$this->output->write($messages, $newline, $sfVerbosity);
        $this->lastMessage = implode($newline ? "\n" : '', (array) $messages);
    }

/**
     * @inheritDoc
     */
    public function overwrite($messages, $newline = true, $size = null, $verbosity = self::NORMAL)
    {
        $this->doOverwrite($messages, $newline, $size, false, $verbosity);
    }

/**
     * @inheritDoc
     */
    public function overwriteError($messages, $newline = true, $size = null, $verbosity = self::NORMAL)
    {
        $this->doOverwrite($messages, $newline, $size, true, $verbosity);
    }

/**
     * @param string[]|string $messages
     * @param bool         $newline
     * @param int|null     $size
     * @param bool         $stderr
     * @param int          $verbosity
     *
     * @return void
     */
    private function doOverwrite($messages, $newline, $size, $stderr, $verbosity)
    {
        // messages can be an array, let's convert it to string anyway
        $messages = implode($newline ? "\n" : '', (array) $messages);

// since overwrite is supposed to overwrite last message...
        if (!isset($size)) {
            // removing possible formatting of lastMessage with strip_tags
            $size = strlen(strip_tags($stderr ? $this->lastMessageErr : $this->lastMessage));
        }
        // ...let's fill its length with backspaces
        $this->doWrite(str_repeat("\x08", $size), false, $stderr, $verbosity);

// write the new message
        $this->doWrite($messages, false, $stderr, $verbosity);

// In cmd.exe on Win8.1 (possibly 10?), the line can not be cleared, so we need to
        // track the length of previous output and fill it with spaces to make sure the line is cleared.
        // See https://github.com/composer/composer/pull/5836 for more details
        $fill = $size - strlen(strip_tags($messages));
        if ($fill > 0) {
            // whitespace whatever has left
            $this->doWrite(str_repeat(' ', $fill), false, $stderr, $verbosity);
            // move the cursor back
            $this->doWrite(str_repeat("\x08", $fill), false, $stderr, $verbosity);
        }

if ($newline) {
            $this->doWrite('', true, $stderr, $verbosity);
        }

if ($stderr) {
            $this->lastMessageErr = $messages;
        } else {
            $this->lastMessage = $messages;
        }
    }

/**
     * @param  int         $max
     * @return ProgressBar
     */
    public function getProgressBar($max = 0)
    {
        return new ProgressBar($this->getErrorOutput(), $max);
    }

/**
     * @inheritDoc
     */
    public function ask($question, $default = null)
    {
        /** @var \Symfony\Component\Console\Helper\QuestionHelper $helper */
        $helper = $this->helperSet->get('question');
        $question = new Question($question, $default);

return $helper->ask($this->input, $this->getErrorOutput(), $question);
    }

/**
     * @inheritDoc
     */
    public function askConfirmation($question, $default = true)
    {
        /** @var \Symfony\Component\Console\Helper\QuestionHelper $helper */
        $helper = $this->helperSet->get('question');
        $question = new StrictConfirmationQuestion($question, $default);

return $helper->ask($this->input, $this->getErrorOutput(), $question);
    }

/**
     * @inheritDoc
     */
    public function askAndValidate($question, $validator, $attempts = null, $default = null)
    {
        /** @var \Symfony\Component\Console\Helper\QuestionHelper $helper */
        $helper = $this->helperSet->get('question');
        $question = new Question($question, $default);
        $question->setValidator($validator);
        $question->setMaxAttempts($attempts);

return $helper->ask($this->input, $this->getErrorOutput(), $question);
    }

/**
     * @inheritDoc
     */
    public function askAndHideAnswer($question)
    {
        /** @var \Symfony\Component\Console\Helper\QuestionHelper $helper */
        $helper = $this->helperSet->get('question');
        $question = new Question($question);
        $question->setHidden(true);

return $helper->ask($this->input, $this->getErrorOutput(), $question);
    }

/**
     * @inheritDoc
     */
    public function select($question, $choices, $default, $attempts = false, $errorMessage = 'Value "%s" is invalid', $multiselect = false)
    {
        /** @var \Symfony\Component\Console\Helper\QuestionHelper $helper */
        $helper = $this->helperSet->get('question');
        $question = new ChoiceQuestion($question, $choices, $default);
        $question->setMaxAttempts($attempts ?: null); // IOInterface requires false, and Question requires null or int
        $question->setErrorMessage($errorMessage);
        $question->setMultiselect($multiselect);

$result = $helper->ask($this->input, $this->getErrorOutput(), $question);

if (!is_array($result)) {
            return (string) array_search($result, $choices, true);
        }

$results = array();
        foreach ($choices as $index => $choice) {
            if (in_array($choice, $result, true)) {
                $results[] = (string) $index;
            }
        }

return $results;
    }

/**
     * @return OutputInterface
     */
    private function getErrorOutput()
    {
        if ($this->output instanceof ConsoleOutputInterface) {
            return $this->output->getErrorOutput();
        }

return $this->output;
    }
}
<?php

namespace Composer\IO;

/**
 * IOInterface that is not interactive and never writes the output
 *
 * @author Christophe Coevoet <stof@notk.org>
 */
class NullIO extends BaseIO
{
    /**
     * @inheritDoc
     */
    public function isInteractive()
    {
        return false;
    }

/**
     * @inheritDoc
     */
    public function isVerbose()
    {
        return false;
    }

/**
     * @inheritDoc
     */
    public function isVeryVerbose()
    {
        return false;
    }

/**
     * @inheritDoc
     */
    public function isDebug()
    {
        return false;
    }

/**
     * @inheritDoc
     */
    public function isDecorated()
    {
        return false;
    }

/**
     * @inheritDoc
     */
    public function write($messages, $newline = true, $verbosity = self::NORMAL)
    {
    }

/**
     * @inheritDoc
     */
    public function writeError($messages, $newline = true, $verbosity = self::NORMAL)
    {
    }

/**
     * @inheritDoc
     */
    public function overwrite($messages, $newline = true, $size = 80, $verbosity = self::NORMAL)
    {
    }

/**
     * @inheritDoc
     */
    public function overwriteError($messages, $newline = true, $size = 80, $verbosity = self::NORMAL)
    {
    }

/**
     * @inheritDoc
     */
    public function ask($question, $default = null)
    {
        return $default;
    }

/**
     * @inheritDoc
     */
    public function askConfirmation($question, $default = true)
    {
        return $default;
    }

/**
     * @inheritDoc
     */
    public function askAndValidate($question, $validator, $attempts = null, $default = null)
    {
        return $default;
    }

/**
     * @inheritDoc
     */
    public function askAndHideAnswer($question)
    {
        return null;
    }

/**
     * @inheritDoc
     */
    public function select($question, $choices, $default, $attempts = false, $errorMessage = 'Value "%s" is invalid', $multiselect = false)
    {
        return $default;
    }
}
<?php

namespace Composer\IO;

use Composer\Config;
use Composer\Pcre\Preg;
use Composer\Util\ProcessExecutor;
use Psr\Log\LogLevel;

abstract class BaseIO implements IOInterface
{
    /** @var array<string, array{username: string|null, password: string|null}> */
    protected $authentications = array();

/**
     * @inheritDoc
     */
    public function getAuthentications()
    {
        return $this->authentications;
    }

/**
     * @return void
     */
    public function resetAuthentications()
    {
        $this->authentications = array();
    }

/**
     * @inheritDoc
     */
    public function hasAuthentication($repositoryName)
    {
        return isset($this->authentications[$repositoryName]);
    }

/**
     * @inheritDoc
     */
    public function getAuthentication($repositoryName)
    {
        if (isset($this->authentications[$repositoryName])) {
            return $this->authentications[$repositoryName];
        }

return array('username' => null, 'password' => null);
    }

/**
     * @inheritDoc
     */
    public function setAuthentication($repositoryName, $username, $password = null)
    {
        $this->authentications[$repositoryName] = array('username' => $username, 'password' => $password);
    }

/**
     * @inheritDoc
     */
    public function writeRaw($messages, $newline = true, $verbosity = self::NORMAL)
    {
        $this->write($messages, $newline, $verbosity);
    }

/**
     * @inheritDoc
     */
    public function writeErrorRaw($messages, $newline = true, $verbosity = self::NORMAL)
    {
        $this->writeError($messages, $newline, $verbosity);
    }

/**
     * Check for overwrite and set the authentication information for the repository.
     *
     * @param string $repositoryName The unique name of repository
     * @param string $username       The username
     * @param string $password       The password
     *
     * @return void
     */
    protected function checkAndSetAuthentication($repositoryName, $username, $password = null)
    {
        if ($this->hasAuthentication($repositoryName)) {
            $auth = $this->getAuthentication($repositoryName);
            if ($auth['username'] === $username && $auth['password'] === $password) {
                return;
            }

$this->writeError(
                sprintf(
                    "<warning>Warning: You should avoid overwriting already defined auth settings for %s.</warning>",
                    $repositoryName
                )
            );
        }
        $this->setAuthentication($repositoryName, $username, $password);
    }

/**
     * @inheritDoc
     */
    public function loadConfiguration(Config $config)
    {
        $bitbucketOauth = $config->get('bitbucket-oauth') ?: array();
        $githubOauth = $config->get('github-oauth') ?: array();
        $gitlabOauth = $config->get('gitlab-oauth') ?: array();
        $gitlabToken = $config->get('gitlab-token') ?: array();
        $httpBasic = $config->get('http-basic') ?: array();
        $bearerToken = $config->get('bearer') ?: array();

// reload oauth tokens from config if available

foreach ($bitbucketOauth as $domain => $cred) {
            $this->checkAndSetAuthentication($domain, $cred['consumer-key'], $cred['consumer-secret']);
        }

foreach ($githubOauth as $domain => $token) {
            // allowed chars for GH tokens are from https://github.blog/changelog/2021-03-04-authentication-token-format-updates/
            // plus dots which were at some point used for GH app integration tokens
            if (!Preg::isMatch('{^[.A-Za-z0-9_]+$}', $token)) {
                throw new \UnexpectedValueException('Your github oauth token for '.$domain.' contains invalid characters: "'.$token.'"');
            }
            $this->checkAndSetAuthentication($domain, $token, 'x-oauth-basic');
        }

foreach ($gitlabOauth as $domain => $token) {
            $this->checkAndSetAuthentication($domain, $token, 'oauth2');
        }

foreach ($gitlabToken as $domain => $token) {
            $username = is_array($token) && array_key_exists("username", $token) ? $token["username"] : $token;
            $password = is_array($token) && array_key_exists("token", $token) ? $token["token"] : 'private-token';
            $this->checkAndSetAuthentication($domain, $username, $password);
        }

// reload http basic credentials from config if available
        foreach ($httpBasic as $domain => $cred) {
            $this->checkAndSetAuthentication($domain, $cred['username'], $cred['password']);
        }

foreach ($bearerToken as $domain => $token) {
            $this->checkAndSetAuthentication($domain, $token, 'bearer');
        }

// setup process timeout
        ProcessExecutor::setTimeout((int) $config->get('process-timeout'));
    }

/**
     * @return void
     */
    public function emergency($message, array $context = array())
    {
        $this->log(LogLevel::EMERGENCY, $message, $context);
    }

/**
     * @return void
     */
    public function alert($message, array $context = array())
    {
        $this->log(LogLevel::ALERT, $message, $context);
    }

/**
     * @return void
     */
    public function critical($message, array $context = array())
    {
        $this->log(LogLevel::CRITICAL, $message, $context);
    }

/**
     * @return void
     */
    public function error($message, array $context = array())
    {
        $this->log(LogLevel::ERROR, $message, $context);
    }

/**
     * @return void
     */
    public function warning($message, array $context = array())
    {
        $this->log(LogLevel::WARNING, $message, $context);
    }

/**
     * @return void
     */
    public function notice($message, array $context = array())
    {
        $this->log(LogLevel::NOTICE, $message, $context);
    }

/**
     * @return void
     */
    public function info($message, array $context = array())
    {
        $this->log(LogLevel::INFO, $message, $context);
    }

/**
     * @return void
     */
    public function debug($message, array $context = array())
    {
        $this->log(LogLevel::DEBUG, $message, $context);
    }

/**
     * @return void
     */
    public function log($level, $message, array $context = array())
    {
        if (in_array($level, array(LogLevel::EMERGENCY, LogLevel::ALERT, LogLevel::CRITICAL, LogLevel::ERROR))) {
            $this->writeError('<error>'.$message.'</error>');
        } elseif ($level === LogLevel::WARNING) {
            $this->writeError('<warning>'.$message.'</warning>');
        } elseif ($level === LogLevel::NOTICE) {
            $this->writeError('<info>'.$message.'</info>', true, self::VERBOSE);
        } elseif ($level === LogLevel::INFO) {
            $this->writeError('<info>'.$message.'</info>', true, self::VERY_VERBOSE);
        } else {
            $this->writeError($message, true, self::DEBUG);
        }
    }
}
<?php

namespace Composer\IO;

use Composer\Config;
use Psr\Log\LoggerInterface;

/**
 * The Input/Output helper interface.
 *
 * @author François Pluchino <francois.pluchino@opendisplay.com>
 */
interface IOInterface extends LoggerInterface
{
    const QUIET = 1;
    const NORMAL = 2;
    const VERBOSE = 4;
    const VERY_VERBOSE = 8;
    const DEBUG = 16;

/**
     * Is this input means interactive?
     *
     * @return bool
     */
    public function isInteractive();

/**
     * Is this output verbose?
     *
     * @return bool
     */
    public function isVerbose();

/**
     * Is the output very verbose?
     *
     * @return bool
     */
    public function isVeryVerbose();

/**
     * Is the output in debug verbosity?
     *
     * @return bool
     */
    public function isDebug();

/**
     * Is this output decorated?
     *
     * @return bool
     */
    public function isDecorated();

/**
     * Writes a message to the output.
     *
     * @param string|string[] $messages  The message as an array of lines or a single string
     * @param bool            $newline   Whether to add a newline or not
     * @param int             $verbosity Verbosity level from the VERBOSITY_* constants
     *
     * @return void
     */
    public function write($messages, $newline = true, $verbosity = self::NORMAL);

/**
     * Writes a message to the error output.
     *
     * @param string|string[] $messages  The message as an array of lines or a single string
     * @param bool            $newline   Whether to add a newline or not
     * @param int             $verbosity Verbosity level from the VERBOSITY_* constants
     *
     * @return void
     */
    public function writeError($messages, $newline = true, $verbosity = self::NORMAL);

/**
     * Writes a message to the output, without formatting it.
     *
     * @param string|string[] $messages  The message as an array of lines or a single string
     * @param bool            $newline   Whether to add a newline or not
     * @param int             $verbosity Verbosity level from the VERBOSITY_* constants
     *
     * @return void
     */
    public function writeRaw($messages, $newline = true, $verbosity = self::NORMAL);

/**
     * Writes a message to the error output, without formatting it.
     *
     * @param string|string[] $messages  The message as an array of lines or a single string
     * @param bool            $newline   Whether to add a newline or not
     * @param int             $verbosity Verbosity level from the VERBOSITY_* constants
     *
     * @return void
     */
    public function writeErrorRaw($messages, $newline = true, $verbosity = self::NORMAL);

/**
     * Overwrites a previous message to the output.
     *
     * @param string|string[] $messages  The message as an array of lines or a single string
     * @param bool            $newline   Whether to add a newline or not
     * @param int             $size      The size of line
     * @param int             $verbosity Verbosity level from the VERBOSITY_* constants
     *
     * @return void
     */
    public function overwrite($messages, $newline = true, $size = null, $verbosity = self::NORMAL);

/**
     * Overwrites a previous message to the error output.
     *
     * @param string|string[] $messages  The message as an array of lines or a single string
     * @param bool            $newline   Whether to add a newline or not
     * @param int             $size      The size of line
     * @param int             $verbosity Verbosity level from the VERBOSITY_* constants
     *
     * @return void
     */
    public function overwriteError($messages, $newline = true, $size = null, $verbosity = self::NORMAL);

/**
     * Asks a question to the user.
     *
     * @param string $question The question to ask
     * @param string $default  The default answer if none is given by the user
     *
     * @throws \RuntimeException If there is no data to read in the input stream
     * @return string|null       The user answer
     */
    public function ask($question, $default = null);

/**
     * Asks a confirmation to the user.
     *
     * The question will be asked until the user answers by nothing, yes, or no.
     *
     * @param string $question The question to ask
     * @param bool   $default  The default answer if the user enters nothing
     *
     * @return bool true if the user has confirmed, false otherwise
     */
    public function askConfirmation($question, $default = true);

/**
     * Asks for a value and validates the response.
     *
     * The validator receives the data to validate. It must return the
     * validated data when the data is valid and throw an exception
     * otherwise.
     *
     * @param string   $question  The question to ask
     * @param callable $validator A PHP callback
     * @param null|int $attempts  Max number of times to ask before giving up (default of null means infinite)
     * @param mixed    $default   The default answer if none is given by the user
     *
     * @throws \Exception When any of the validators return an error
     * @return mixed
     */
    public function askAndValidate($question, $validator, $attempts = null, $default = null);

/**
     * Asks a question to the user and hide the answer.
     *
     * @param string $question The question to ask
     *
     * @return string|null The answer
     */
    public function askAndHideAnswer($question);

/**
     * Asks the user to select a value.
     *
     * @param string      $question     The question to ask
     * @param string[]    $choices      List of choices to pick from
     * @param bool|string $default      The default answer if the user enters nothing
     * @param bool|int    $attempts     Max number of times to ask before giving up (false by default, which means infinite)
     * @param string      $errorMessage Message which will be shown if invalid value from choice list would be picked
     * @param bool        $multiselect  Select more than one value separated by comma
     *
     * @throws \InvalidArgumentException
     * @return int|string|string[]|bool     The selected value or values (the key of the choices array)
     */
    public function select($question, $choices, $default, $attempts = false, $errorMessage = 'Value "%s" is invalid', $multiselect = false);

/**
     * Get all authentication information entered.
     *
     * @return array<string, array{username: string|null, password: string|null}> The map of authentication data
     */
    public function getAuthentications();

/**
     * Verify if the repository has a authentication information.
     *
     * @param string $repositoryName The unique name of repository
     *
     * @return bool
     */
    public function hasAuthentication($repositoryName);

/**
     * Get the username and password of repository.
     *
     * @param string $repositoryName The unique name of repository
     *
     * @return array{username: string|null, password: string|null}
     */
    public function getAuthentication($repositoryName);

/**
     * Set the authentication information for the repository.
     *
     * @param string  $repositoryName The unique name of repository
     * @param string  $username       The username
     * @param ?string $password       The password
     *
     * @return void
     */
    public function setAuthentication($repositoryName, $username, $password = null);

/**
     * Loads authentications from a config instance
     *
     * @param Config $config
     *
     * @return void
     */
    public function loadConfiguration(Config $config);
}
<?php

namespace Composer\IO;

use Composer\Pcre\Preg;
use Symfony\Component\Console\Helper\QuestionHelper;
use Symfony\Component\Console\Output\StreamOutput;
use Symfony\Component\Console\Formatter\OutputFormatterInterface;
use Symfony\Component\Console\Input\StreamableInputInterface;
use Symfony\Component\Console\Input\StringInput;
use Symfony\Component\Console\Helper\HelperSet;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class BufferIO extends ConsoleIO
{
    /** @var StringInput */
    protected $input;
    /** @var StreamOutput */
    protected $output;

/**
     * @param string                        $input
     * @param int                           $verbosity
     * @param OutputFormatterInterface|null $formatter
     */
    public function __construct($input = '', $verbosity = StreamOutput::VERBOSITY_NORMAL, OutputFormatterInterface $formatter = null)
    {
        $input = new StringInput($input);
        $input->setInteractive(false);

$output = new StreamOutput(fopen('php://memory', 'rw'), $verbosity, $formatter ? $formatter->isDecorated() : false, $formatter);

parent::__construct($input, $output, new HelperSet(array(
            new QuestionHelper(),
        )));
    }

/**
     * @return string output
     */
    public function getOutput()
    {
        fseek($this->output->getStream(), 0);

$output = stream_get_contents($this->output->getStream());

$output = Preg::replaceCallback("{(?<=^|\n|\x08)(.+?)(\x08+)}", function ($matches) {
            $pre = strip_tags($matches[1]);

if (strlen($pre) === strlen($matches[2])) {
                return '';
            }

// TODO reverse parse the string, skipping span tags and \033\[([0-9;]+)m(.*?)\033\[0m style blobs
            return rtrim($matches[1])."\n";
        }, $output);

return $output;
    }

/**
     * @param string[] $inputs
     *
     * @see createStream
     *
     * @return void
     */
    public function setUserInputs(array $inputs)
    {
        if (!$this->input instanceof StreamableInputInterface) {
            throw new \RuntimeException('Setting the user inputs requires at least the version 3.2 of the symfony/console component.');
        }

$this->input->setStream($this->createStream($inputs));
        $this->input->setInteractive(true);
    }

/**
     * @param string[] $inputs
     *
     * @return false|resource stream
     */
    private function createStream(array $inputs)
    {
        $stream = fopen('php://memory', 'r+');

foreach ($inputs as $input) {
            fwrite($stream, $input.PHP_EOL);
        }

rewind($stream);

return $stream;
    }
}
<?php

namespace Composer\Package;

use Composer\Repository\RepositoryInterface;

/**
 * Defines the essential information a package has that is used during solving/installation
 *
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
interface PackageInterface
{
    const DISPLAY_SOURCE_REF_IF_DEV = 0;
    const DISPLAY_SOURCE_REF = 1;
    const DISPLAY_DIST_REF = 2;

/**
     * Returns the package's name without version info, thus not a unique identifier
     *
     * @return string package name
     */
    public function getName();

/**
     * Returns the package's pretty (i.e. with proper case) name
     *
     * @return string package name
     */
    public function getPrettyName();

/**
     * Returns a set of names that could refer to this package
     *
     * No version or release type information should be included in any of the
     * names. Provided or replaced package names need to be returned as well.
     *
     * @param bool $provides Whether provided names should be included
     *
     * @return string[] An array of strings referring to this package
     */
    public function getNames($provides = true);

/**
     * Allows the solver to set an id for this package to refer to it.
     *
     * @param int $id
     *
     * @return void
     */
    public function setId($id);

/**
     * Retrieves the package's id set through setId
     *
     * @return int The previously set package id
     */
    public function getId();

/**
     * Returns whether the package is a development virtual package or a concrete one
     *
     * @return bool
     */
    public function isDev();

/**
     * Returns the package type, e.g. library
     *
     * @return string The package type
     */
    public function getType();

/**
     * Returns the package targetDir property
     *
     * @return ?string The package targetDir
     */
    public function getTargetDir();

/**
     * Returns the package extra data
     *
     * @return mixed[] The package extra data
     */
    public function getExtra();

/**
     * Sets source from which this package was installed (source/dist).
     *
     * @param string $type source/dist
     * @phpstan-param 'source'|'dist'|null $type
     *
     * @return void
     */
    public function setInstallationSource($type);

/**
     * Returns source from which this package was installed (source/dist).
     *
     * @return ?string source/dist
     * @phpstan-return 'source'|'dist'|null
     */
    public function getInstallationSource();

/**
     * Returns the repository type of this package, e.g. git, svn
     *
     * @return ?string The repository type
     */
    public function getSourceType();

/**
     * Returns the repository url of this package, e.g. git://github.com/naderman/composer.git
     *
     * @return ?string The repository url
     */
    public function getSourceUrl();

/**
     * Returns the repository urls of this package including mirrors, e.g. git://github.com/naderman/composer.git
     *
     * @return string[]
     */
    public function getSourceUrls();

/**
     * Returns the repository reference of this package, e.g. master, 1.0.0 or a commit hash for git
     *
     * @return ?string The repository reference
     */
    public function getSourceReference();

/**
     * Returns the source mirrors of this package
     *
     * @return ?array<int, array{url: string, preferred: bool}>
     */
    public function getSourceMirrors();

/**
     * @param  ?array<int, array{url: string, preferred: bool}> $mirrors
     * @return void
     */
    public function setSourceMirrors($mirrors);

/**
     * Returns the type of the distribution archive of this version, e.g. zip, tarball
     *
     * @return ?string The repository type
     */
    public function getDistType();

/**
     * Returns the url of the distribution archive of this version
     *
     * @return ?string
     */
    public function getDistUrl();

/**
     * Returns the urls of the distribution archive of this version, including mirrors
     *
     * @return string[]
     */
    public function getDistUrls();

/**
     * Returns the reference of the distribution archive of this version, e.g. master, 1.0.0 or a commit hash for git
     *
     * @return ?string
     */
    public function getDistReference();

/**
     * Returns the sha1 checksum for the distribution archive of this version
     *
     * @return ?string
     */
    public function getDistSha1Checksum();

/**
     * Returns the dist mirrors of this package
     *
     * @return ?array<int, array{url: string, preferred: bool}>
     */
    public function getDistMirrors();

/**
     * @param  ?array<int, array{url: string, preferred: bool}> $mirrors
     * @return void
     */
    public function setDistMirrors($mirrors);

/**
     * Returns the version of this package
     *
     * @return string version
     */
    public function getVersion();

/**
     * Returns the pretty (i.e. non-normalized) version string of this package
     *
     * @return string version
     */
    public function getPrettyVersion();

/**
     * Returns the pretty version string plus a git or hg commit hash of this package
     *
     * @see getPrettyVersion
     *
     * @param  bool   $truncate    If the source reference is a sha1 hash, truncate it
     * @param  int    $displayMode One of the DISPLAY_ constants on this interface determining display of references
     * @return string version
     *
     * @phpstan-param self::DISPLAY_SOURCE_REF_IF_DEV|self::DISPLAY_SOURCE_REF|self::DISPLAY_DIST_REF $displayMode
     */
    public function getFullPrettyVersion($truncate = true, $displayMode = self::DISPLAY_SOURCE_REF_IF_DEV);

/**
     * Returns the release date of the package
     *
     * @return ?\DateTime
     */
    public function getReleaseDate();

/**
     * Returns the stability of this package: one of (dev, alpha, beta, RC, stable)
     *
     * @return string
     *
     * @phpstan-return 'stable'|'RC'|'beta'|'alpha'|'dev'
     */
    public function getStability();

/**
     * Returns a set of links to packages which need to be installed before
     * this package can be installed
     *
     * @return array<string, Link> A map of package links defining required packages, indexed by the require package's name
     */
    public function getRequires();

/**
     * Returns a set of links to packages which must not be installed at the
     * same time as this package
     *
     * @return Link[] An array of package links defining conflicting packages
     */
    public function getConflicts();

/**
     * Returns a set of links to virtual packages that are provided through
     * this package
     *
     * @return Link[] An array of package links defining provided packages
     */
    public function getProvides();

/**
     * Returns a set of links to packages which can alternatively be
     * satisfied by installing this package
     *
     * @return Link[] An array of package links defining replaced packages
     */
    public function getReplaces();

/**
     * Returns a set of links to packages which are required to develop
     * this package. These are installed if in dev mode.
     *
     * @return array<string, Link> A map of package links defining packages required for development, indexed by the require package's name
     */
    public function getDevRequires();

/**
     * Returns a set of package names and reasons why they are useful in
     * combination with this package.
     *
     * @return array An array of package suggestions with descriptions
     * @phpstan-return array<string, string>
     */
    public function getSuggests();

/**
     * Returns an associative array of autoloading rules
     *
     * {"<type>": {"<namespace": "<directory>"}}
     *
     * Type is either "psr-4", "psr-0", "classmap" or "files". Namespaces are mapped to
     * directories for autoloading using the type specified.
     *
     * @return array Mapping of autoloading rules
     * @phpstan-return array{psr-0?: array<string, string|string[]>, psr-4?: array<string, string|string[]>, classmap?: list<string>, files?: list<string>}
     */
    public function getAutoload();

/**
     * Returns an associative array of dev autoloading rules
     *
     * {"<type>": {"<namespace": "<directory>"}}
     *
     * Type is either "psr-4", "psr-0", "classmap" or "files". Namespaces are mapped to
     * directories for autoloading using the type specified.
     *
     * @return array Mapping of dev autoloading rules
     * @phpstan-return array{psr-0?: array<string, string|string[]>, psr-4?: array<string, string|string[]>, classmap?: list<string>, files?: list<string>}
     */
    public function getDevAutoload();

/**
     * Returns a list of directories which should get added to PHP's
     * include path.
     *
     * @return string[]
     */
    public function getIncludePaths();

/**
     * Stores a reference to the repository that owns the package
     *
     * @param RepositoryInterface $repository
     *
     * @return void
     */
    public function setRepository(RepositoryInterface $repository);

/**
     * Returns a reference to the repository that owns the package
     *
     * @return ?RepositoryInterface
     */
    public function getRepository();

/**
     * Returns the package binaries
     *
     * @return string[]
     */
    public function getBinaries();

/**
     * Returns package unique name, constructed from name and version.
     *
     * @return string
     */
    public function getUniqueName();

/**
     * Returns the package notification url
     *
     * @return ?string
     */
    public function getNotificationUrl();

/**
     * Converts the package into a readable and unique string
     *
     * @return string
     */
    public function __toString();

/**
     * Converts the package into a pretty readable string
     *
     * @return string
     */
    public function getPrettyString();

/**
     * @return bool
     */
    public function isDefaultBranch();

/**
     * Returns a list of options to download package dist files
     *
     * @return mixed[]
     */
    public function getTransportOptions();

/**
     * Configures the list of options to download package dist files
     *
     * @param mixed[] $options
     *
     * @return void
     */
    public function setTransportOptions(array $options);

/**
     * @param string $reference
     *
     * @return void
     */
    public function setSourceReference($reference);

/**
     * @param string $url
     *
     * @return void
     */
    public function setDistUrl($url);

/**
     * @param string $type
     *
     * @return void
     */
    public function setDistType($type);

/**
     * @param string $reference
     *
     * @return void
     */
    public function setDistReference($reference);

/**
     * Set dist and source references and update dist URL for ones that contain a reference
     *
     * @param string $reference
     *
     * @return void
     */
    public function setSourceDistReferences($reference);
}
<?php

namespace Composer\Package;

/**
 * Package containing additional metadata that is not used by the solver
 *
 * @author Nils Adermann <naderman@naderman.de>
 */
class CompletePackage extends Package implements CompletePackageInterface
{
    /** @var mixed[] */
    protected $repositories = array();
    /** @var string[] */
    protected $license = array();
    /** @var string[] */
    protected $keywords = array();
    /** @var array<array{name?: string, homepage?: string, email?: string, role?: string}> */
    protected $authors = array();
    /** @var ?string */
    protected $description = null;
    /** @var ?string */
    protected $homepage = null;
    /** @var array<string, string[]> Map of script name to array of handlers */
    protected $scripts = array();
    /** @var array{issues?: string, forum?: string, wiki?: string, source?: string, email?: string, irc?: string, docs?: string, rss?: string, chat?: string} */
    protected $support = array();
    /** @var array<array{url?: string, type?: string}> */
    protected $funding = array();
    /** @var bool|string */
    protected $abandoned = false;
    /** @var ?string */
    protected $archiveName = null;
    /** @var string[] */
    protected $archiveExcludes = array();

/**
     * @inheritDoc
     */
    public function setScripts(array $scripts)
    {
        $this->scripts = $scripts;
    }

/**
     * @inheritDoc
     */
    public function getScripts()
    {
        return $this->scripts;
    }

/**
     * @inheritDoc
     */
    public function setRepositories(array $repositories)
    {
        $this->repositories = $repositories;
    }

/**
     * @inheritDoc
     */
    public function getRepositories()
    {
        return $this->repositories;
    }

/**
     * @inheritDoc
     */
    public function setLicense(array $license)
    {
        $this->license = $license;
    }

/**
     * @inheritDoc
     */
    public function getLicense()
    {
        return $this->license;
    }

/**
     * @inheritDoc
     */
    public function setKeywords(array $keywords)
    {
        $this->keywords = $keywords;
    }

/**
     * @inheritDoc
     */
    public function getKeywords()
    {
        return $this->keywords;
    }

/**
     * @inheritDoc
     */
    public function setAuthors(array $authors)
    {
        $this->authors = $authors;
    }

/**
     * @inheritDoc
     */
    public function getAuthors()
    {
        return $this->authors;
    }

/**
     * @inheritDoc
     */
    public function setDescription($description)
    {
        $this->description = $description;
    }

/**
     * @inheritDoc
     */
    public function getDescription()
    {
        return $this->description;
    }

/**
     * @inheritDoc
     */
    public function setHomepage($homepage)
    {
        $this->homepage = $homepage;
    }

/**
     * @inheritDoc
     */
    public function getHomepage()
    {
        return $this->homepage;
    }

/**
     * @inheritDoc
     */
    public function setSupport(array $support)
    {
        $this->support = $support;
    }

/**
     * @inheritDoc
     */
    public function getSupport()
    {
        return $this->support;
    }

/**
     * @inheritDoc
     */
    public function setFunding(array $funding)
    {
        $this->funding = $funding;
    }

/**
     * @inheritDoc
     */
    public function getFunding()
    {
        return $this->funding;
    }

/**
     * @inheritDoc
     */
    public function isAbandoned()
    {
        return (bool) $this->abandoned;
    }

/**
     * @inheritDoc
     */
    public function setAbandoned($abandoned)
    {
        $this->abandoned = $abandoned;
    }

/**
     * @inheritDoc
     */
    public function getReplacementPackage()
    {
        return \is_string($this->abandoned) ? $this->abandoned : null;
    }

/**
     * @inheritDoc
     */
    public function setArchiveName($name)
    {
        $this->archiveName = $name;
    }

/**
     * @inheritDoc
     */
    public function getArchiveName()
    {
        return $this->archiveName;
    }

/**
     * @inheritDoc
     */
    public function setArchiveExcludes(array $excludes)
    {
        $this->archiveExcludes = $excludes;
    }

/**
     * @inheritDoc
     */
    public function getArchiveExcludes()
    {
        return $this->archiveExcludes;
    }
}
<?php

namespace Composer\Package\Loader;

use Composer\Package\CompletePackageInterface;
use Composer\Package\CompletePackage;
use Composer\Package\CompleteAliasPackage;
use Composer\Package\RootAliasPackage;
use Composer\Package\RootPackage;

/**
 * Defines a loader that takes an array to create package instances
 *
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
interface LoaderInterface
{
    /**
     * Converts a package from an array to a real instance
     *
     * @template PackageClass of CompletePackageInterface
     *
     * @param  mixed[] $config package data
     * @param  string  $class  FQCN to be instantiated
     *
     * @return CompletePackage|CompleteAliasPackage|RootPackage|RootAliasPackage
     *
     * @phpstan-param class-string<PackageClass> $class
     */
    public function load(array $config, $class = 'Composer\Package\CompletePackage');
}
<?php

namespace Composer\Package\Loader;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class InvalidPackageException extends \Exception
{
    /** @var string[] */
    private $errors;
    /** @var string[] */
    private $warnings;
    /** @var mixed[] package config */
    private $data;

/**
     * @param string[] $errors
     * @param string[] $warnings
     * @param mixed[]  $data
     */
    public function __construct(array $errors, array $warnings, array $data)
    {
        $this->errors = $errors;
        $this->warnings = $warnings;
        $this->data = $data;
        parent::__construct("Invalid package information: \n".implode("\n", array_merge($errors, $warnings)));
    }

/**
     * @return mixed[]
     */
    public function getData()
    {
        return $this->data;
    }

/**
     * @return string[]
     */
    public function getErrors()
    {
        return $this->errors;
    }

/**
     * @return string[]
     */
    public function getWarnings()
    {
        return $this->warnings;
    }
}
<?php

namespace Composer\Package\Loader;

use Composer\Json\JsonFile;
use Composer\Package\CompletePackage;
use Composer\Package\CompleteAliasPackage;

/**
 * @author Konstantin Kudryashiv <ever.zet@gmail.com>
 */
class JsonLoader
{
    /** @var LoaderInterface */
    private $loader;

public function __construct(LoaderInterface $loader)
    {
        $this->loader = $loader;
    }

/**
     * @param  string|JsonFile                      $json A filename, json string or JsonFile instance to load the package from
     * @return CompletePackage|CompleteAliasPackage
     */
    public function load($json)
    {
        if ($json instanceof JsonFile) {
            $config = $json->read();
        } elseif (file_exists($json)) {
            $config = JsonFile::parseJson(file_get_contents($json), $json);
        } elseif (is_string($json)) {
            $config = JsonFile::parseJson($json);
        } else {
            throw new \InvalidArgumentException(sprintf(
                "JsonLoader: Unknown \$json parameter %s. Please report at https://github.com/composer/composer/issues/new.",
                gettype($json)
            ));
        }

return $this->loader->load($config);
    }
}
<?php

namespace Composer\Package\Loader;

use Composer\Package\BasePackage;
use Composer\Pcre\Preg;
use Composer\Semver\Constraint\Constraint;
use Composer\Package\Version\VersionParser;
use Composer\Repository\PlatformRepository;
use Composer\Spdx\SpdxLicenses;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class ValidatingArrayLoader implements LoaderInterface
{
    const CHECK_ALL = 3;
    const CHECK_UNBOUND_CONSTRAINTS = 1;
    const CHECK_STRICT_CONSTRAINTS = 2;

/** @var LoaderInterface */
    private $loader;
    /** @var VersionParser */
    private $versionParser;
    /** @var string[] */
    private $errors;
    /** @var string[] */
    private $warnings;
    /** @var mixed[] */
    private $config;
    /** @var int One or more of self::CHECK_* constants */
    private $flags;

/**
     * @param true $strictName
     * @param int  $flags
     */
    public function __construct(LoaderInterface $loader, $strictName = true, VersionParser $parser = null, $flags = 0)
    {
        $this->loader = $loader;
        $this->versionParser = $parser ?: new VersionParser();
        $this->flags = $flags;

if ($strictName !== true) { // @phpstan-ignore-line
            trigger_error('$strictName must be set to true in ValidatingArrayLoader\'s constructor as of 2.2, and it will be removed in 3.0', E_USER_DEPRECATED);
        }
    }

/**
     * @inheritDoc
     */
    public function load(array $config, $class = 'Composer\Package\CompletePackage')
    {
        $this->errors = array();
        $this->warnings = array();
        $this->config = $config;

$this->validateString('name', true);
        if ($err = self::hasPackageNamingError($config['name'])) {
            $this->errors[] = 'name : '.$err;
        }

if (!empty($this->config['version'])) {
            if (!is_scalar($this->config['version'])) {
                $this->validateString('version');
            } else {
                if (!is_string($this->config['version'])) {
                    $this->config['version'] = (string) $this->config['version'];
                }
                try {
                    $this->versionParser->normalize($this->config['version']);
                } catch (\Exception $e) {
                    $this->errors[] = 'version : invalid value ('.$this->config['version'].'): '.$e->getMessage();
                    unset($this->config['version']);
                }
            }
        }

if (!empty($this->config['config']['platform'])) {
            foreach ((array) $this->config['config']['platform'] as $key => $platform) {
                if (false === $platform) {
                    continue;
                }
                if (!is_string($platform)) {
                    $this->errors[] = 'config.platform.' . $key . ' : invalid value ('.gettype($platform).' '.var_export($platform, true).'): expected string or false';
                    continue;
                }
                try {
                    $this->versionParser->normalize($platform);
                } catch (\Exception $e) {
                    $this->errors[] = 'config.platform.' . $key . ' : invalid value ('.$platform.'): '.$e->getMessage();
                }
            }
        }

$this->validateRegex('type', '[A-Za-z0-9-]+');
        $this->validateString('target-dir');
        $this->validateArray('extra');

if (isset($this->config['bin'])) {
            if (is_string($this->config['bin'])) {
                $this->validateString('bin');
            } else {
                $this->validateFlatArray('bin');
            }
        }

$this->validateArray('scripts'); // TODO validate event names & listener syntax
        $this->validateString('description');
        $this->validateUrl('homepage');
        $this->validateFlatArray('keywords', '[\p{N}\p{L} ._-]+');

$releaseDate = null;
        $this->validateString('time');
        if (!empty($this->config['time'])) {
            try {
                $releaseDate = new \DateTime($this->config['time'], new \DateTimeZone('UTC'));
            } catch (\Exception $e) {
                $this->errors[] = 'time : invalid value ('.$this->config['time'].'): '.$e->getMessage();
                unset($this->config['time']);
            }
        }

// check for license validity on newly updated branches
        if (isset($this->config['license']) && (!$releaseDate || $releaseDate->getTimestamp() >= strtotime('-8days'))) {
            if (is_array($this->config['license']) || is_string($this->config['license'])) {
                $licenses = (array) $this->config['license'];

$licenseValidator = new SpdxLicenses();
                foreach ($licenses as $license) {
                    // replace proprietary by MIT for validation purposes since it's not a valid SPDX identifier, but is accepted by composer
                    if ('proprietary' === $license) {
                        continue;
                    }
                    $licenseToValidate = str_replace('proprietary', 'MIT', $license);
                    if (!$licenseValidator->validate($licenseToValidate)) {
                        if ($licenseValidator->validate(trim($licenseToValidate))) {
                            $this->warnings[] = sprintf(
                                'License %s must not contain extra spaces, make sure to trim it.',
                                json_encode($license)
                            );
                        } else {
                            $this->warnings[] = sprintf(
                                'License %s is not a valid SPDX license identifier, see https://spdx.org/licenses/ if you use an open license.' . PHP_EOL .
                                'If the software is closed-source, you may use "proprietary" as license.',
                                json_encode($license)
                            );
                        }
                    }
                }
            }
        }

if ($this->validateArray('authors') && !empty($this->config['authors'])) {
            foreach ($this->config['authors'] as $key => $author) {
                if (!is_array($author)) {
                    $this->errors[] = 'authors.'.$key.' : should be an array, '.gettype($author).' given';
                    unset($this->config['authors'][$key]);
                    continue;
                }
                foreach (array('homepage', 'email', 'name', 'role') as $authorData) {
                    if (isset($author[$authorData]) && !is_string($author[$authorData])) {
                        $this->errors[] = 'authors.'.$key.'.'.$authorData.' : invalid value, must be a string';
                        unset($this->config['authors'][$key][$authorData]);
                    }
                }
                if (isset($author['homepage']) && !$this->filterUrl($author['homepage'])) {
                    $this->warnings[] = 'authors.'.$key.'.homepage : invalid value ('.$author['homepage'].'), must be an http/https URL';
                    unset($this->config['authors'][$key]['homepage']);
                }
                if (isset($author['email']) && !filter_var($author['email'], FILTER_VALIDATE_EMAIL)) {
                    $this->warnings[] = 'authors.'.$key.'.email : invalid value ('.$author['email'].'), must be a valid email address';
                    unset($this->config['authors'][$key]['email']);
                }
                if (empty($this->config['authors'][$key])) {
                    unset($this->config['authors'][$key]);
                }
            }
            if (empty($this->config['authors'])) {
                unset($this->config['authors']);
            }
        }

if ($this->validateArray('support') && !empty($this->config['support'])) {
            foreach (array('issues', 'forum', 'wiki', 'source', 'email', 'irc', 'docs', 'rss', 'chat') as $key) {
                if (isset($this->config['support'][$key]) && !is_string($this->config['support'][$key])) {
                    $this->errors[] = 'support.'.$key.' : invalid value, must be a string';
                    unset($this->config['support'][$key]);
                }
            }

if (isset($this->config['support']['email']) && !filter_var($this->config['support']['email'], FILTER_VALIDATE_EMAIL)) {
                $this->warnings[] = 'support.email : invalid value ('.$this->config['support']['email'].'), must be a valid email address';
                unset($this->config['support']['email']);
            }

if (isset($this->config['support']['irc']) && !$this->filterUrl($this->config['support']['irc'], array('irc', 'ircs'))) {
                $this->warnings[] = 'support.irc : invalid value ('.$this->config['support']['irc'].'), must be a irc://<server>/<channel> or ircs:// URL';
                unset($this->config['support']['irc']);
            }

foreach (array('issues', 'forum', 'wiki', 'source', 'docs', 'chat') as $key) {
                if (isset($this->config['support'][$key]) && !$this->filterUrl($this->config['support'][$key])) {
                    $this->warnings[] = 'support.'.$key.' : invalid value ('.$this->config['support'][$key].'), must be an http/https URL';
                    unset($this->config['support'][$key]);
                }
            }
            if (empty($this->config['support'])) {
                unset($this->config['support']);
            }
        }

if ($this->validateArray('funding') && !empty($this->config['funding'])) {
            foreach ($this->config['funding'] as $key => $fundingOption) {
                if (!is_array($fundingOption)) {
                    $this->errors[] = 'funding.'.$key.' : should be an array, '.gettype($fundingOption).' given';
                    unset($this->config['funding'][$key]);
                    continue;
                }
                foreach (array('type', 'url') as $fundingData) {
                    if (isset($fundingOption[$fundingData]) && !is_string($fundingOption[$fundingData])) {
                        $this->errors[] = 'funding.'.$key.'.'.$fundingData.' : invalid value, must be a string';
                        unset($this->config['funding'][$key][$fundingData]);
                    }
                }
                if (isset($fundingOption['url']) && !$this->filterUrl($fundingOption['url'])) {
                    $this->warnings[] = 'funding.'.$key.'.url : invalid value ('.$fundingOption['url'].'), must be an http/https URL';
                    unset($this->config['funding'][$key]['url']);
                }
                if (empty($this->config['funding'][$key])) {
                    unset($this->config['funding'][$key]);
                }
            }
            if (empty($this->config['funding'])) {
                unset($this->config['funding']);
            }
        }

$unboundConstraint = new Constraint('=', '10000000-dev');
        $stableConstraint = new Constraint('=', '1.0.0');

foreach (array_keys(BasePackage::$supportedLinkTypes) as $linkType) {
            if ($this->validateArray($linkType) && isset($this->config[$linkType])) {
                foreach ($this->config[$linkType] as $package => $constraint) {
                    if (0 === strcasecmp($package, $this->config['name'])) {
                        $this->errors[] = $linkType.'.'.$package.' : a package cannot set a '.$linkType.' on itself';
                        unset($this->config[$linkType][$package]);
                        continue;
                    }
                    if ($err = self::hasPackageNamingError($package, true)) {
                        $this->errors[] = $linkType.'.'.$err;
                    } elseif (!Preg::isMatch('{^[A-Za-z0-9_./-]+$}', $package)) {
                        $this->warnings[] = $linkType.'.'.$package.' : invalid key, package names must be strings containing only [A-Za-z0-9_./-]';
                    }
                    if (!is_string($constraint)) {
                        $this->errors[] = $linkType.'.'.$package.' : invalid value, must be a string containing a version constraint';
                        unset($this->config[$linkType][$package]);
                    } elseif ('self.version' !== $constraint) {
                        try {
                            $linkConstraint = $this->versionParser->parseConstraints($constraint);
                        } catch (\Exception $e) {
                            $this->errors[] = $linkType.'.'.$package.' : invalid version constraint ('.$e->getMessage().')';
                            unset($this->config[$linkType][$package]);
                            continue;
                        }

// check requires for unbound constraints on non-platform packages
                        if (
                            ($this->flags & self::CHECK_UNBOUND_CONSTRAINTS)
                            && 'require' === $linkType
                            && $linkConstraint->matches($unboundConstraint)
                            && !PlatformRepository::isPlatformPackage($package)
                        ) {
                            $this->warnings[] = $linkType.'.'.$package.' : unbound version constraints ('.$constraint.') should be avoided';
                        } elseif (
                            // check requires for exact constraints
                            ($this->flags & self::CHECK_STRICT_CONSTRAINTS)
                            && 'require' === $linkType
                            && strpos($linkConstraint, '=') === 0
                            && $stableConstraint->versionCompare($stableConstraint, $linkConstraint, '<=')
                        ) {
                            $this->warnings[] = $linkType.'.'.$package.' : exact version constraints ('.$constraint.') should be avoided if the package follows semantic versioning';
                        }
                    }

if ($linkType === 'conflict' && isset($this->config['replace']) && $keys = array_intersect_key($this->config['replace'], $this->config['conflict'])) {
                        $this->errors[] = $linkType.'.'.$package.' : you cannot conflict with a package that is also replaced, as replace already creates an implicit conflict rule';
                        unset($this->config[$linkType][$package]);
                    }
                }
            }
        }

if ($this->validateArray('suggest') && !empty($this->config['suggest'])) {
            foreach ($this->config['suggest'] as $package => $description) {
                if (!is_string($description)) {
                    $this->errors[] = 'suggest.'.$package.' : invalid value, must be a string describing why the package is suggested';
                    unset($this->config['suggest'][$package]);
                }
            }
        }

if ($this->validateString('minimum-stability') && !empty($this->config['minimum-stability'])) {
            if (!isset(BasePackage::$stabilities[strtolower($this->config['minimum-stability'])]) && $this->config['minimum-stability'] !== 'RC') {
                $this->errors[] = 'minimum-stability : invalid value ('.$this->config['minimum-stability'].'), must be one of '.implode(', ', array_keys(BasePackage::$stabilities));
                unset($this->config['minimum-stability']);
            }
        }

if ($this->validateArray('autoload') && !empty($this->config['autoload'])) {
            $types = array('psr-0', 'psr-4', 'classmap', 'files', 'exclude-from-classmap');
            foreach ($this->config['autoload'] as $type => $typeConfig) {
                if (!in_array($type, $types)) {
                    $this->errors[] = 'autoload : invalid value ('.$type.'), must be one of '.implode(', ', $types);
                    unset($this->config['autoload'][$type]);
                }
                if ($type === 'psr-4') {
                    foreach ($typeConfig as $namespace => $dirs) {
                        if ($namespace !== '' && '\\' !== substr($namespace, -1)) {
                            $this->errors[] = 'autoload.psr-4 : invalid value ('.$namespace.'), namespaces must end with a namespace separator, should be '.$namespace.'\\\\';
                        }
                    }
                }
            }
        }

if (!empty($this->config['autoload']['psr-4']) && !empty($this->config['target-dir'])) {
            $this->errors[] = 'target-dir : this can not be used together with the autoload.psr-4 setting, remove target-dir to upgrade to psr-4';
            // Unset the psr-4 setting, since unsetting target-dir might
            // interfere with other settings.
            unset($this->config['autoload']['psr-4']);
        }

foreach (array('source', 'dist') as $srcType) {
            if ($this->validateArray($srcType) && !empty($this->config[$srcType])) {
                if (!isset($this->config[$srcType]['type'])) {
                    $this->errors[] = $srcType . '.type : must be present';
                }
                if (!isset($this->config[$srcType]['url'])) {
                    $this->errors[] = $srcType . '.url : must be present';
                }
                if ($srcType === 'source' && !isset($this->config[$srcType]['reference'])) {
                    $this->errors[] = $srcType . '.reference : must be present';
                }
                if (!is_string($this->config[$srcType]['type'])) {
                    $this->errors[] = $srcType . '.type : should be a string, '.gettype($this->config[$srcType]['type']).' given';
                }
                if (!is_string($this->config[$srcType]['url'])) {
                    $this->errors[] = $srcType . '.url : should be a string, '.gettype($this->config[$srcType]['url']).' given';
                }
                if (isset($this->config[$srcType]['reference']) && !is_string($this->config[$srcType]['reference']) && !is_int($this->config[$srcType]['reference'])) {
                    $this->errors[] = $srcType . '.reference : should be a string or int, '.gettype($this->config[$srcType]['reference']).' given';
                }
                if (isset($this->config[$srcType]['reference']) && Preg::isMatch('{^\s*-}', (string) $this->config[$srcType]['reference'])) {
                    $this->errors[] = $srcType . '.reference : must not start with a "-", "'.$this->config[$srcType]['reference'].'" given';
                }
                if (Preg::isMatch('{^\s*-}', $this->config[$srcType]['url'])) {
                    $this->errors[] = $srcType . '.url : must not start with a "-", "'.$this->config[$srcType]['url'].'" given';
                }
            }
        }

// TODO validate repositories
        // TODO validate package repositories' packages using this recursively

$this->validateFlatArray('include-path');
        $this->validateArray('transport-options');

// branch alias validation
        if (isset($this->config['extra']['branch-alias'])) {
            if (!is_array($this->config['extra']['branch-alias'])) {
                $this->errors[] = 'extra.branch-alias : must be an array of versions => aliases';
            } else {
                foreach ($this->config['extra']['branch-alias'] as $sourceBranch => $targetBranch) {
                    if (!is_string($targetBranch)) {
                        $this->warnings[] = 'extra.branch-alias.'.$sourceBranch.' : the target branch ('.json_encode($targetBranch).') must be a string, "'.gettype($targetBranch).'" received.';
                        unset($this->config['extra']['branch-alias'][$sourceBranch]);

continue;
                    }

// ensure it is an alias to a -dev package
                    if ('-dev' !== substr($targetBranch, -4)) {
                        $this->warnings[] = 'extra.branch-alias.'.$sourceBranch.' : the target branch ('.$targetBranch.') must end in -dev';
                        unset($this->config['extra']['branch-alias'][$sourceBranch]);

continue;
                    }

// normalize without -dev and ensure it's a numeric branch that is parseable
                    $validatedTargetBranch = $this->versionParser->normalizeBranch(substr($targetBranch, 0, -4));
                    if ('-dev' !== substr($validatedTargetBranch, -4)) {
                        $this->warnings[] = 'extra.branch-alias.'.$sourceBranch.' : the target branch ('.$targetBranch.') must be a parseable number like 2.0-dev';
                        unset($this->config['extra']['branch-alias'][$sourceBranch]);

continue;
                    }

// If using numeric aliases ensure the alias is a valid subversion
                    if (($sourcePrefix = $this->versionParser->parseNumericAliasPrefix($sourceBranch))
                        && ($targetPrefix = $this->versionParser->parseNumericAliasPrefix($targetBranch))
                        && (stripos($targetPrefix, $sourcePrefix) !== 0)
                    ) {
                        $this->warnings[] = 'extra.branch-alias.'.$sourceBranch.' : the target branch ('.$targetBranch.') is not a valid numeric alias for this version';
                        unset($this->config['extra']['branch-alias'][$sourceBranch]);
                    }
                }
            }
        }

if ($this->errors) {
            throw new InvalidPackageException($this->errors, $this->warnings, $config);
        }

$package = $this->loader->load($this->config, $class);
        $this->config = array();

return $package;
    }

/**
     * @return string[]
     */
    public function getWarnings()
    {
        return $this->warnings;
    }

/**
     * @return string[]
     */
    public function getErrors()
    {
        return $this->errors;
    }

/**
     * @param string $name
     * @param bool   $isLink
     *
     * @return string|null
     */
    public static function hasPackageNamingError($name, $isLink = false)
    {
        if (PlatformRepository::isPlatformPackage($name)) {
            return null;
        }

if (!Preg::isMatch('{^[a-z0-9](?:[_.-]?[a-z0-9]+)*/[a-z0-9](?:(?:[_.]?|-{0,2})[a-z0-9]+)*$}iD', $name)) {
            return $name.' is invalid, it should have a vendor name, a forward slash, and a package name. The vendor and package name can be words separated by -, . or _. The complete name should match "^[a-z0-9]([_.-]?[a-z0-9]+)*/[a-z0-9](([_.]?|-{0,2})[a-z0-9]+)*$".';
        }

$reservedNames = array('nul', 'con', 'prn', 'aux', 'com1', 'com2', 'com3', 'com4', 'com5', 'com6', 'com7', 'com8', 'com9', 'lpt1', 'lpt2', 'lpt3', 'lpt4', 'lpt5', 'lpt6', 'lpt7', 'lpt8', 'lpt9');
        $bits = explode('/', strtolower($name));
        if (in_array($bits[0], $reservedNames, true) || in_array($bits[1], $reservedNames, true)) {
            return $name.' is reserved, package and vendor names can not match any of: '.implode(', ', $reservedNames).'.';
        }

if (Preg::isMatch('{\.json$}', $name)) {
            return $name.' is invalid, package names can not end in .json, consider renaming it or perhaps using a -json suffix instead.';
        }

if (Preg::isMatch('{[A-Z]}', $name)) {
            if ($isLink) {
                return $name.' is invalid, it should not contain uppercase characters. Please use '.strtolower($name).' instead.';
            }

$suggestName = Preg::replace('{(?:([a-z])([A-Z])|([A-Z])([A-Z][a-z]))}', '\\1\\3-\\2\\4', $name);
            $suggestName = strtolower($suggestName);

return $name.' is invalid, it should not contain uppercase characters. We suggest using '.$suggestName.' instead.';
        }

return null;
    }

/**
     * @param string $property
     * @param string $regex
     * @param bool   $mandatory
     *
     * @return bool
     *
     * @phpstan-param non-empty-string $property
     * @phpstan-param non-empty-string $regex
     */
    private function validateRegex($property, $regex, $mandatory = false)
    {
        if (!$this->validateString($property, $mandatory)) {
            return false;
        }

if (!Preg::isMatch('{^'.$regex.'$}u', $this->config[$property])) {
            $message = $property.' : invalid value ('.$this->config[$property].'), must match '.$regex;
            if ($mandatory) {
                $this->errors[] = $message;
            } else {
                $this->warnings[] = $message;
            }
            unset($this->config[$property]);

return false;
        }

return true;
    }

/**
     * @param string $property
     * @param bool   $mandatory
     *
     * @return bool
     *
     * @phpstan-param non-empty-string $property
     */
    private function validateString($property, $mandatory = false)
    {
        if (isset($this->config[$property]) && !is_string($this->config[$property])) {
            $this->errors[] = $property.' : should be a string, '.gettype($this->config[$property]).' given';
            unset($this->config[$property]);

return false;
        }

if (!isset($this->config[$property]) || trim($this->config[$property]) === '') {
            if ($mandatory) {
                $this->errors[] = $property.' : must be present';
            }
            unset($this->config[$property]);

return false;
        }

return true;
    }

/**
     * @param string $property
     * @param bool   $mandatory
     *
     * @return bool
     *
     * @phpstan-param non-empty-string $property
     */
    private function validateArray($property, $mandatory = false)
    {
        if (isset($this->config[$property]) && !is_array($this->config[$property])) {
            $this->errors[] = $property.' : should be an array, '.gettype($this->config[$property]).' given';
            unset($this->config[$property]);

return false;
        }

if (!isset($this->config[$property]) || !count($this->config[$property])) {
            if ($mandatory) {
                $this->errors[] = $property.' : must be present and contain at least one element';
            }
            unset($this->config[$property]);

return false;
        }

return true;
    }

/**
     * @param string      $property
     * @param string|null $regex
     * @param bool        $mandatory
     *
     * @return bool
     *
     * @phpstan-param non-empty-string      $property
     * @phpstan-param non-empty-string|null $regex
     */
    private function validateFlatArray($property, $regex = null, $mandatory = false)
    {
        if (!$this->validateArray($property, $mandatory)) {
            return false;
        }

$pass = true;
        foreach ($this->config[$property] as $key => $value) {
            if (!is_string($value) && !is_numeric($value)) {
                $this->errors[] = $property.'.'.$key.' : must be a string or int, '.gettype($value).' given';
                unset($this->config[$property][$key]);
                $pass = false;

continue;
            }

if ($regex && !Preg::isMatch('{^'.$regex.'$}u', $value)) {
                $this->warnings[] = $property.'.'.$key.' : invalid value ('.$value.'), must match '.$regex;
                unset($this->config[$property][$key]);
                $pass = false;
            }
        }

return $pass;
    }

/**
     * @param string $property
     * @param bool $mandatory
     *
     * @return bool
     *
     * @phpstan-param non-empty-string $property
     */
    private function validateUrl($property, $mandatory = false)
    {
        if (!$this->validateString($property, $mandatory)) {
            return false;
        }

if (!$this->filterUrl($this->config[$property])) {
            $this->warnings[] = $property.' : invalid value ('.$this->config[$property].'), must be an http/https URL';
            unset($this->config[$property]);

return false;
        }

return true;
    }

/**
     * @param mixed    $value
     * @param string[] $schemes
     *
     * @return bool
     */
    private function filterUrl($value, array $schemes = array('http', 'https'))
    {
        if ($value === '') {
            return true;
        }

$bits = parse_url($value);
        if (empty($bits['scheme']) || empty($bits['host'])) {
            return false;
        }

if (!in_array($bits['scheme'], $schemes, true)) {
            return false;
        }

return true;
    }
}
<?php

namespace Composer\Package\Loader;

use Composer\Package\BasePackage;
use Composer\Package\CompleteAliasPackage;
use Composer\Package\CompletePackage;
use Composer\Package\RootPackage;
use Composer\Package\PackageInterface;
use Composer\Package\CompletePackageInterface;
use Composer\Package\Link;
use Composer\Package\RootAliasPackage;
use Composer\Package\Version\VersionParser;
use Composer\Pcre\Preg;

/**
 * @author Konstantin Kudryashiv <ever.zet@gmail.com>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class ArrayLoader implements LoaderInterface
{
    /** @var VersionParser */
    protected $versionParser;
    /** @var bool */
    protected $loadOptions;

/**
     * @param bool $loadOptions
     */
    public function __construct(VersionParser $parser = null, $loadOptions = false)
    {
        if (!$parser) {
            $parser = new VersionParser;
        }
        $this->versionParser = $parser;
        $this->loadOptions = $loadOptions;
    }

/**
     * @inheritDoc
     */
    public function load(array $config, $class = 'Composer\Package\CompletePackage')
    {
        if ($class !== 'Composer\Package\CompletePackage' && $class !== 'Composer\Package\RootPackage') {
            trigger_error('The $class arg is deprecated, please reach out to Composer maintainers ASAP if you still need this.', E_USER_DEPRECATED);
        }

$package = $this->createObject($config, $class);

foreach (BasePackage::$supportedLinkTypes as $type => $opts) {
            if (isset($config[$type])) {
                $method = 'set'.ucfirst($opts['method']);
                $package->{$method}(
                    $this->parseLinks(
                        $package->getName(),
                        $package->getPrettyVersion(),
                        $opts['method'],
                        $config[$type]
                    )
                );
            }
        }

$package = $this->configureObject($package, $config);

return $package;
    }

/**
     * @param list<array<mixed>> $versions
     *
     * @return list<CompletePackage|CompleteAliasPackage>
     */
    public function loadPackages(array $versions)
    {
        $packages = array();
        $linkCache = array();

foreach ($versions as $version) {
            $package = $this->createObject($version, 'Composer\Package\CompletePackage');

$this->configureCachedLinks($linkCache, $package, $version);
            $package = $this->configureObject($package, $version);

$packages[] = $package;
        }

return $packages;
    }

/**
     * @template PackageClass of CompletePackageInterface
     *
     * @param mixed[] $config package data
     * @param string  $class  FQCN to be instantiated
     *
     * @return CompletePackage|RootPackage
     *
     * @phpstan-param class-string<PackageClass> $class
     */
    private function createObject(array $config, $class)
    {
        if (!isset($config['name'])) {
            throw new \UnexpectedValueException('Unknown package has no name defined ('.json_encode($config).').');
        }
        if (!isset($config['version']) || !is_scalar($config['version'])) {
            throw new \UnexpectedValueException('Package '.$config['name'].' has no version defined.');
        }
        if (!is_string($config['version'])) {
            $config['version'] = (string) $config['version'];
        }

// handle already normalized versions
        if (isset($config['version_normalized']) && is_string($config['version_normalized'])) {
            $version = $config['version_normalized'];

// handling of existing repos which need to remain composer v1 compatible, in case the version_normalized contained VersionParser::DEFAULT_BRANCH_ALIAS, we renormalize it
            if ($version === VersionParser::DEFAULT_BRANCH_ALIAS) {
                $version = $this->versionParser->normalize($config['version']);
            }
        } else {
            $version = $this->versionParser->normalize($config['version']);
        }

return new $class($config['name'], $version, $config['version']);
    }

/**
     * @param CompletePackage $package
     * @param mixed[]         $config package data
     *
     * @return RootPackage|RootAliasPackage|CompletePackage|CompleteAliasPackage
     */
    private function configureObject(PackageInterface $package, array $config)
    {
        if (!$package instanceof CompletePackage) {
            throw new \LogicException('ArrayLoader expects instances of the Composer\Package\CompletePackage class to function correctly');
        }

$package->setType(isset($config['type']) ? strtolower($config['type']) : 'library');

if (isset($config['target-dir'])) {
            $package->setTargetDir($config['target-dir']);
        }

if (isset($config['extra']) && \is_array($config['extra'])) {
            $package->setExtra($config['extra']);
        }

if (isset($config['bin'])) {
            if (!\is_array($config['bin'])) {
                $config['bin'] = array($config['bin']);
            }
            foreach ($config['bin'] as $key => $bin) {
                $config['bin'][$key] = ltrim($bin, '/');
            }
            $package->setBinaries($config['bin']);
        }

if (isset($config['installation-source'])) {
            $package->setInstallationSource($config['installation-source']);
        }

if (isset($config['default-branch']) && $config['default-branch'] === true) {
            $package->setIsDefaultBranch(true);
        }

if (isset($config['source'])) {
            if (!isset($config['source']['type'], $config['source']['url'], $config['source']['reference'])) {
                throw new \UnexpectedValueException(sprintf(
                    "Package %s's source key should be specified as {\"type\": ..., \"url\": ..., \"reference\": ...},\n%s given.",
                    $config['name'],
                    json_encode($config['source'])
                ));
            }
            $package->setSourceType($config['source']['type']);
            $package->setSourceUrl($config['source']['url']);
            $package->setSourceReference(isset($config['source']['reference']) ? $config['source']['reference'] : null);
            if (isset($config['source']['mirrors'])) {
                $package->setSourceMirrors($config['source']['mirrors']);
            }
        }

if (isset($config['dist'])) {
            if (!isset($config['dist']['type'], $config['dist']['url'])) {
                throw new \UnexpectedValueException(sprintf(
                    "Package %s's dist key should be specified as ".
                    "{\"type\": ..., \"url\": ..., \"reference\": ..., \"shasum\": ...},\n%s given.",
                    $config['name'],
                    json_encode($config['dist'])
                ));
            }
            $package->setDistType($config['dist']['type']);
            $package->setDistUrl($config['dist']['url']);
            $package->setDistReference(isset($config['dist']['reference']) ? $config['dist']['reference'] : null);
            $package->setDistSha1Checksum(isset($config['dist']['shasum']) ? $config['dist']['shasum'] : null);
            if (isset($config['dist']['mirrors'])) {
                $package->setDistMirrors($config['dist']['mirrors']);
            }
        }

if (isset($config['suggest']) && \is_array($config['suggest'])) {
            foreach ($config['suggest'] as $target => $reason) {
                if ('self.version' === trim($reason)) {
                    $config['suggest'][$target] = $package->getPrettyVersion();
                }
            }
            $package->setSuggests($config['suggest']);
        }

if (isset($config['autoload'])) {
            $package->setAutoload($config['autoload']);
        }

if (isset($config['autoload-dev'])) {
            $package->setDevAutoload($config['autoload-dev']);
        }

if (isset($config['include-path'])) {
            $package->setIncludePaths($config['include-path']);
        }

if (!empty($config['time'])) {
            $time = Preg::isMatch('/^\d++$/D', $config['time']) ? '@'.$config['time'] : $config['time'];

try {
                $date = new \DateTime($time, new \DateTimeZone('UTC'));
                $package->setReleaseDate($date);
            } catch (\Exception $e) {
            }
        }

if (!empty($config['notification-url'])) {
            $package->setNotificationUrl($config['notification-url']);
        }

if ($package instanceof CompletePackageInterface) {
            if (!empty($config['archive']['name'])) {
                $package->setArchiveName($config['archive']['name']);
            }
            if (!empty($config['archive']['exclude'])) {
                $package->setArchiveExcludes($config['archive']['exclude']);
            }

if (isset($config['scripts']) && \is_array($config['scripts'])) {
                foreach ($config['scripts'] as $event => $listeners) {
                    $config['scripts'][$event] = (array) $listeners;
                }
                foreach (array('composer', 'php', 'putenv') as $reserved) {
                    if (isset($config['scripts'][$reserved])) {
                        trigger_error('The `'.$reserved.'` script name is reserved for internal use, please avoid defining it', E_USER_DEPRECATED);
                    }
                }
                $package->setScripts($config['scripts']);
            }

if (!empty($config['description']) && \is_string($config['description'])) {
                $package->setDescription($config['description']);
            }

if (!empty($config['homepage']) && \is_string($config['homepage'])) {
                $package->setHomepage($config['homepage']);
            }

if (!empty($config['keywords']) && \is_array($config['keywords'])) {
                $package->setKeywords($config['keywords']);
            }

if (!empty($config['license'])) {
                $package->setLicense(\is_array($config['license']) ? $config['license'] : array($config['license']));
            }

if (!empty($config['authors']) && \is_array($config['authors'])) {
                $package->setAuthors($config['authors']);
            }

if (isset($config['support'])) {
                $package->setSupport($config['support']);
            }

if (!empty($config['funding']) && \is_array($config['funding'])) {
                $package->setFunding($config['funding']);
            }

if (isset($config['abandoned'])) {
                $package->setAbandoned($config['abandoned']);
            }
        }

if ($this->loadOptions && isset($config['transport-options'])) {
            $package->setTransportOptions($config['transport-options']);
        }

if ($aliasNormalized = $this->getBranchAlias($config)) {
            $prettyAlias = Preg::replace('{(\.9{7})+}', '.x', $aliasNormalized);

if ($package instanceof RootPackage) {
                return new RootAliasPackage($package, $aliasNormalized, $prettyAlias);
            }

return new CompleteAliasPackage($package, $aliasNormalized, $prettyAlias);
        }

return $package;
    }

/**
     * @param array<string, array<string, array<string, array<string, array{string, Link}>>>> $linkCache
     * @param PackageInterface                                                                $package
     * @param mixed[]                                                                         $config
     *
     * @return void
     */
    private function configureCachedLinks(&$linkCache, $package, array $config)
    {
        $name = $package->getName();
        $prettyVersion = $package->getPrettyVersion();

foreach (BasePackage::$supportedLinkTypes as $type => $opts) {
            if (isset($config[$type])) {
                $method = 'set'.ucfirst($opts['method']);

$links = array();
                foreach ($config[$type] as $prettyTarget => $constraint) {
                    $target = strtolower($prettyTarget);

// recursive links are not supported
                    if ($target === $name) {
                        continue;
                    }

if ($constraint === 'self.version') {
                        $links[$target] = $this->createLink($name, $prettyVersion, $opts['method'], $target, $constraint);
                    } else {
                        if (!isset($linkCache[$name][$type][$target][$constraint])) {
                            $linkCache[$name][$type][$target][$constraint] = array($target, $this->createLink($name, $prettyVersion, $opts['method'], $target, $constraint));
                        }

list($target, $link) = $linkCache[$name][$type][$target][$constraint];
                        $links[$target] = $link;
                    }
                }

$package->{$method}($links);
            }
        }
    }

/**
     * @param  string                $source        source package name
     * @param  string                $sourceVersion source package version (pretty version ideally)
     * @param  string                $description   link description (e.g. requires, replaces, ..)
     * @param  array<string, string> $links         array of package name => constraint mappings
     *
     * @return Link[]
     *
     * @phpstan-param Link::TYPE_* $description
     */
    public function parseLinks($source, $sourceVersion, $description, $links)
    {
        $res = array();
        foreach ($links as $target => $constraint) {
            $target = strtolower($target);
            $res[$target] = $this->createLink($source, $sourceVersion, $description, $target, $constraint);
        }

return $res;
    }

/**
     * @param  string       $source           source package name
     * @param  string       $sourceVersion    source package version (pretty version ideally)
     * @param  Link::TYPE_* $description      link description (e.g. requires, replaces, ..)
     * @param  string       $target           target package name
     * @param  string       $prettyConstraint constraint string
     * @return Link
     */
    private function createLink($source, $sourceVersion, $description, $target, $prettyConstraint)
    {
        if (!\is_string($prettyConstraint)) {
            throw new \UnexpectedValueException('Link constraint in '.$source.' '.$description.' > '.$target.' should be a string, got '.\gettype($prettyConstraint) . ' (' . var_export($prettyConstraint, true) . ')');
        }
        if ('self.version' === $prettyConstraint) {
            $parsedConstraint = $this->versionParser->parseConstraints($sourceVersion);
        } else {
            $parsedConstraint = $this->versionParser->parseConstraints($prettyConstraint);
        }

return new Link($source, $target, $parsedConstraint, $description, $prettyConstraint);
    }

/**
     * Retrieves a branch alias (dev-master => 1.0.x-dev for example) if it exists
     *
     * @param mixed[] $config the entire package config
     *
     * @return string|null normalized version of the branch alias or null if there is none
     */
    public function getBranchAlias(array $config)
    {
        if (strpos($config['version'], 'dev-') !== 0 && '-dev' !== substr($config['version'], -4)) {
            return null;
        }

if (isset($config['extra']['branch-alias']) && \is_array($config['extra']['branch-alias'])) {
            foreach ($config['extra']['branch-alias'] as $sourceBranch => $targetBranch) {
                // ensure it is an alias to a -dev package
                if ('-dev' !== substr($targetBranch, -4)) {
                    continue;
                }

// normalize without -dev and ensure it's a numeric branch that is parseable
                if ($targetBranch === VersionParser::DEFAULT_BRANCH_ALIAS) {
                    $validatedTargetBranch = VersionParser::DEFAULT_BRANCH_ALIAS;
                } else {
                    $validatedTargetBranch = $this->versionParser->normalizeBranch(substr($targetBranch, 0, -4));
                }
                if ('-dev' !== substr($validatedTargetBranch, -4)) {
                    continue;
                }

// ensure that it is the current branch aliasing itself
                if (strtolower($config['version']) !== strtolower($sourceBranch)) {
                    continue;
                }

return $validatedTargetBranch;
            }
        }

if (
            isset($config['default-branch'])
            && $config['default-branch'] === true
            && false === $this->versionParser->parseNumericAliasPrefix($config['version'])
        ) {
            return VersionParser::DEFAULT_BRANCH_ALIAS;
        }

return null;
    }
}
<?php

namespace Composer\Package\Loader;

use Composer\Package\BasePackage;
use Composer\Config;
use Composer\IO\IOInterface;
use Composer\Package\RootAliasPackage;
use Composer\Pcre\Preg;
use Composer\Repository\RepositoryFactory;
use Composer\Package\Version\VersionGuesser;
use Composer\Package\Version\VersionParser;
use Composer\Package\RootPackage;
use Composer\Repository\RepositoryManager;
use Composer\Util\Platform;
use Composer\Util\ProcessExecutor;

/**
 * ArrayLoader built for the sole purpose of loading the root package
 *
 * Sets additional defaults and loads repositories
 *
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class RootPackageLoader extends ArrayLoader
{
    /**
     * @var RepositoryManager
     */
    private $manager;

/**
     * @var Config
     */
    private $config;

/**
     * @var VersionGuesser
     */
    private $versionGuesser;

public function __construct(RepositoryManager $manager, Config $config, VersionParser $parser = null, VersionGuesser $versionGuesser = null, IOInterface $io = null)
    {
        parent::__construct($parser);

$this->manager = $manager;
        $this->config = $config;
        $this->versionGuesser = $versionGuesser ?: new VersionGuesser($config, new ProcessExecutor($io), $this->versionParser);
    }

/**
     * @inheritDoc
     *
     * @template PackageClass of RootPackage
     *
     * @param string|null $cwd
     *
     * @return RootPackage|RootAliasPackage
     *
     * @phpstan-param class-string<PackageClass> $class
     */
    public function load(array $config, $class = 'Composer\Package\RootPackage', $cwd = null)
    {
        if ($class !== 'Composer\Package\RootPackage') {
            trigger_error('The $class arg is deprecated, please reach out to Composer maintainers ASAP if you still need this.', E_USER_DEPRECATED);
        }

if (!isset($config['name'])) {
            $config['name'] = '__root__';
        } elseif ($err = ValidatingArrayLoader::hasPackageNamingError($config['name'])) {
            throw new \RuntimeException('Your package name '.$err);
        }
        $autoVersioned = false;
        if (!isset($config['version'])) {
            $commit = null;

// override with env var if available
            if (Platform::getEnv('COMPOSER_ROOT_VERSION')) {
                $config['version'] = Platform::getEnv('COMPOSER_ROOT_VERSION');
            } else {
                $versionData = $this->versionGuesser->guessVersion($config, $cwd ?: getcwd());
                if ($versionData) {
                    $config['version'] = $versionData['pretty_version'];
                    $config['version_normalized'] = $versionData['version'];
                    $commit = $versionData['commit'];
                }
            }

if (!isset($config['version'])) {
                $config['version'] = '1.0.0';
                $autoVersioned = true;
            }

if ($commit) {
                $config['source'] = array(
                    'type' => '',
                    'url' => '',
                    'reference' => $commit,
                );
                $config['dist'] = array(
                    'type' => '',
                    'url' => '',
                    'reference' => $commit,
                );
            }
        }

/** @var RootPackage|RootAliasPackage $package */
        $package = parent::load($config, $class);
        if ($package instanceof RootAliasPackage) {
            $realPackage = $package->getAliasOf();
        } else {
            $realPackage = $package;
        }

if (!$realPackage instanceof RootPackage) {
            throw new \LogicException('Expecting a Composer\Package\RootPackage at this point');
        }

if ($autoVersioned) {
            $realPackage->replaceVersion($realPackage->getVersion(), RootPackage::DEFAULT_PRETTY_VERSION);
        }

if (isset($config['minimum-stability'])) {
            $realPackage->setMinimumStability(VersionParser::normalizeStability($config['minimum-stability']));
        }

$aliases = array();
        $stabilityFlags = array();
        $references = array();
        foreach (array('require', 'require-dev') as $linkType) {
            if (isset($config[$linkType])) {
                $linkInfo = BasePackage::$supportedLinkTypes[$linkType];
                $method = 'get'.ucfirst($linkInfo['method']);
                $links = array();
                foreach ($realPackage->$method() as $link) {
                    $links[$link->getTarget()] = $link->getConstraint()->getPrettyString();
                }
                $aliases = $this->extractAliases($links, $aliases);
                $stabilityFlags = self::extractStabilityFlags($links, $realPackage->getMinimumStability(), $stabilityFlags);
                $references = self::extractReferences($links, $references);

if (isset($links[$config['name']])) {
                    throw new \RuntimeException(sprintf('Root package \'%s\' cannot require itself in its composer.json' . PHP_EOL .
                                'Did you accidentally name your root package after an external package?', $config['name']));
                }
            }
        }

foreach (array_keys(BasePackage::$supportedLinkTypes) as $linkType) {
            if (isset($config[$linkType])) {
                foreach ($config[$linkType] as $linkName => $constraint) {
                    if ($err = ValidatingArrayLoader::hasPackageNamingError($linkName, true)) {
                        throw new \RuntimeException($linkType.'.'.$err);
                    }
                }
            }
        }

$realPackage->setAliases($aliases);
        $realPackage->setStabilityFlags($stabilityFlags);
        $realPackage->setReferences($references);

if (isset($config['prefer-stable'])) {
            $realPackage->setPreferStable((bool) $config['prefer-stable']);
        }

if (isset($config['config'])) {
            $realPackage->setConfig($config['config']);
        }

$repos = RepositoryFactory::defaultRepos(null, $this->config, $this->manager);
        foreach ($repos as $repo) {
            $this->manager->addRepository($repo);
        }
        $realPackage->setRepositories($this->config->getRepositories());

return $package;
    }

/**
     * @param array<string, string>                                                                  $requires
     * @param list<array{package: string, version: string, alias: string, alias_normalized: string}> $aliases
     *
     * @return list<array{package: string, version: string, alias: string, alias_normalized: string}>
     */
    private function extractAliases(array $requires, array $aliases)
    {
        foreach ($requires as $reqName => $reqVersion) {
            if (Preg::isMatch('{^([^,\s#]+)(?:#[^ ]+)? +as +([^,\s]+)$}', $reqVersion, $match)) {
                $aliases[] = array(
                    'package' => strtolower($reqName),
                    'version' => $this->versionParser->normalize($match[1], $reqVersion),
                    'alias' => $match[2],
                    'alias_normalized' => $this->versionParser->normalize($match[2], $reqVersion),
                );
            } elseif (strpos($reqVersion, ' as ') !== false) {
                throw new \UnexpectedValueException('Invalid alias definition in "'.$reqName.'": "'.$reqVersion.'". Aliases should be in the form "exact-version as other-exact-version".');
            }
        }

return $aliases;
    }

/**
     * @internal
     *
     * @param array<string, string> $requires
     * @param string                $minimumStability
     * @param array<string, int>    $stabilityFlags
     *
     * @return array<string, int>
     *
     * @phpstan-param array<string, BasePackage::STABILITY_*> $stabilityFlags
     * @phpstan-return array<string, BasePackage::STABILITY_*>
     */
    public static function extractStabilityFlags(array $requires, $minimumStability, array $stabilityFlags)
    {
        $stabilities = BasePackage::$stabilities;
        /** @var int $minimumStability */
        $minimumStability = $stabilities[$minimumStability];
        foreach ($requires as $reqName => $reqVersion) {
            $constraints = array();

// extract all sub-constraints in case it is an OR/AND multi-constraint
            $orSplit = Preg::split('{\s*\|\|?\s*}', trim($reqVersion));
            foreach ($orSplit as $orConstraint) {
                $andSplit = Preg::split('{(?<!^|as|[=>< ,]) *(?<!-)[, ](?!-) *(?!,|as|$)}', $orConstraint);
                foreach ($andSplit as $andConstraint) {
                    $constraints[] = $andConstraint;
                }
            }

// parse explicit stability flags to the most unstable
            $match = false;
            foreach ($constraints as $constraint) {
                if (Preg::isMatch('{^[^@]*?@('.implode('|', array_keys($stabilities)).')$}i', $constraint, $match)) {
                    $name = strtolower($reqName);
                    $stability = $stabilities[VersionParser::normalizeStability($match[1])];

if (isset($stabilityFlags[$name]) && $stabilityFlags[$name] > $stability) {
                        continue;
                    }
                    $stabilityFlags[$name] = $stability;
                    $match = true;
                }
            }

if ($match) {
                continue;
            }

foreach ($constraints as $constraint) {
                // infer flags for requirements that have an explicit -dev or -beta version specified but only
                // for those that are more unstable than the minimumStability or existing flags
                $reqVersion = Preg::replace('{^([^,\s@]+) as .+$}', '$1', $constraint);
                if (Preg::isMatch('{^[^,\s@]+$}', $reqVersion) && 'stable' !== ($stabilityName = VersionParser::parseStability($reqVersion))) {
                    $name = strtolower($reqName);
                    $stability = $stabilities[$stabilityName];
                    if ((isset($stabilityFlags[$name]) && $stabilityFlags[$name] > $stability) || ($minimumStability > $stability)) {
                        continue;
                    }
                    $stabilityFlags[$name] = $stability;
                }
            }
        }

return $stabilityFlags;
    }

/**
     * @internal
     *
     * @param array<string, string> $requires
     * @param array<string, string> $references
     *
     * @return array<string, string>
     */
    public static function extractReferences(array $requires, array $references)
    {
        foreach ($requires as $reqName => $reqVersion) {
            $reqVersion = Preg::replace('{^([^,\s@]+) as .+$}', '$1', $reqVersion);
            if (Preg::isMatch('{^[^,\s@]+?#([a-f0-9]+)$}', $reqVersion, $match) && 'dev' === VersionParser::parseStability($reqVersion)) {
                $name = strtolower($reqName);
                $references[$name] = $match[1];
            }
        }

return $references;
    }
}
<?php

namespace Composer\Package;

use Composer\Semver\Constraint\Constraint;
use Composer\Package\Version\VersionParser;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class AliasPackage extends BasePackage
{
    /** @var string */
    protected $version;
    /** @var string */
    protected $prettyVersion;
    /** @var bool */
    protected $dev;
    /** @var bool */
    protected $rootPackageAlias = false;
    /**
     * @var string
     * @phpstan-var 'stable'|'RC'|'beta'|'alpha'|'dev'
     */
    protected $stability;
    /** @var bool */
    protected $hasSelfVersionRequires = false;

/** @var BasePackage */
    protected $aliasOf;
    /** @var Link[] */
    protected $requires;
    /** @var Link[] */
    protected $devRequires;
    /** @var Link[] */
    protected $conflicts;
    /** @var Link[] */
    protected $provides;
    /** @var Link[] */
    protected $replaces;

/**
     * All descendants' constructors should call this parent constructor
     *
     * @param BasePackage $aliasOf       The package this package is an alias of
     * @param string      $version       The version the alias must report
     * @param string      $prettyVersion The alias's non-normalized version
     */
    public function __construct(BasePackage $aliasOf, $version, $prettyVersion)
    {
        parent::__construct($aliasOf->getName());

$this->version = $version;
        $this->prettyVersion = $prettyVersion;
        $this->aliasOf = $aliasOf;
        $this->stability = VersionParser::parseStability($version);
        $this->dev = $this->stability === 'dev';

foreach (Link::$TYPES as $type) {
            $links = $aliasOf->{'get' . ucfirst($type)}();
            $this->$type = $this->replaceSelfVersionDependencies($links, $type);
        }
    }

/**
     * @return BasePackage
     */
    public function getAliasOf()
    {
        return $this->aliasOf;
    }

/**
     * @inheritDoc
     */
    public function getVersion()
    {
        return $this->version;
    }

/**
     * @inheritDoc
     */
    public function getStability()
    {
        return $this->stability;
    }

/**
     * @inheritDoc
     */
    public function getPrettyVersion()
    {
        return $this->prettyVersion;
    }

/**
     * @inheritDoc
     */
    public function isDev()
    {
        return $this->dev;
    }

/**
     * @inheritDoc
     */
    public function getRequires()
    {
        return $this->requires;
    }

/**
     * @inheritDoc
     * @return array<string|int, Link>
     */
    public function getConflicts()
    {
        return $this->conflicts;
    }

/**
     * @inheritDoc
     * @return array<string|int, Link>
     */
    public function getProvides()
    {
        return $this->provides;
    }

/**
     * @inheritDoc
     * @return array<string|int, Link>
     */
    public function getReplaces()
    {
        return $this->replaces;
    }

/**
     * @inheritDoc
     */
    public function getDevRequires()
    {
        return $this->devRequires;
    }

/**
     * Stores whether this is an alias created by an aliasing in the requirements of the root package or not
     *
     * Use by the policy for sorting manually aliased packages first, see #576
     *
     * @param bool $value
     *
     * @return mixed
     */
    public function setRootPackageAlias($value)
    {
        return $this->rootPackageAlias = $value;
    }

/**
     * @see setRootPackageAlias
     * @return bool
     */
    public function isRootPackageAlias()
    {
        return $this->rootPackageAlias;
    }

/**
     * @param Link[]       $links
     * @param Link::TYPE_* $linkType
     *
     * @return Link[]
     */
    protected function replaceSelfVersionDependencies(array $links, $linkType)
    {
        // for self.version requirements, we use the original package's branch name instead, to avoid leaking the magic dev-master-alias to users
        $prettyVersion = $this->prettyVersion;
        if ($prettyVersion === VersionParser::DEFAULT_BRANCH_ALIAS) {
            $prettyVersion = $this->aliasOf->getPrettyVersion();
        }

if (\in_array($linkType, array(Link::TYPE_CONFLICT, Link::TYPE_PROVIDE, Link::TYPE_REPLACE), true)) {
            $newLinks = array();
            foreach ($links as $link) {
                // link is self.version, but must be replacing also the replaced version
                if ('self.version' === $link->getPrettyConstraint()) {
                    $newLinks[] = new Link($link->getSource(), $link->getTarget(), $constraint = new Constraint('=', $this->version), $linkType, $prettyVersion);
                    $constraint->setPrettyString($prettyVersion);
                }
            }
            $links = array_merge($links, $newLinks);
        } else {
            foreach ($links as $index => $link) {
                if ('self.version' === $link->getPrettyConstraint()) {
                    if ($linkType === Link::TYPE_REQUIRE) {
                        $this->hasSelfVersionRequires = true;
                    }
                    $links[$index] = new Link($link->getSource(), $link->getTarget(), $constraint = new Constraint('=', $this->version), $linkType, $prettyVersion);
                    $constraint->setPrettyString($prettyVersion);
                }
            }
        }

return $links;
    }

/**
     * @return bool
     */
    public function hasSelfVersionRequires()
    {
        return $this->hasSelfVersionRequires;
    }

public function __toString()
    {
        return parent::__toString().' ('.($this->rootPackageAlias ? 'root ' : ''). 'alias of '.$this->aliasOf->getVersion().')';
    }

/***************************************
     * Wrappers around the aliased package *
     ***************************************/

public function getType()
    {
        return $this->aliasOf->getType();
    }

public function getTargetDir()
    {
        return $this->aliasOf->getTargetDir();
    }

public function getExtra()
    {
        return $this->aliasOf->getExtra();
    }

public function setInstallationSource($type)
    {
        $this->aliasOf->setInstallationSource($type);
    }

public function getInstallationSource()
    {
        return $this->aliasOf->getInstallationSource();
    }

public function getSourceType()
    {
        return $this->aliasOf->getSourceType();
    }

public function getSourceUrl()
    {
        return $this->aliasOf->getSourceUrl();
    }

public function getSourceUrls()
    {
        return $this->aliasOf->getSourceUrls();
    }

public function getSourceReference()
    {
        return $this->aliasOf->getSourceReference();
    }

public function setSourceReference($reference)
    {
        $this->aliasOf->setSourceReference($reference);
    }

public function setSourceMirrors($mirrors)
    {
        $this->aliasOf->setSourceMirrors($mirrors);
    }

public function getSourceMirrors()
    {
        return $this->aliasOf->getSourceMirrors();
    }

public function getDistType()
    {
        return $this->aliasOf->getDistType();
    }

public function getDistUrl()
    {
        return $this->aliasOf->getDistUrl();
    }

public function getDistUrls()
    {
        return $this->aliasOf->getDistUrls();
    }

public function getDistReference()
    {
        return $this->aliasOf->getDistReference();
    }

public function setDistReference($reference)
    {
        $this->aliasOf->setDistReference($reference);
    }

public function getDistSha1Checksum()
    {
        return $this->aliasOf->getDistSha1Checksum();
    }

public function setTransportOptions(array $options)
    {
        $this->aliasOf->setTransportOptions($options);
    }

public function getTransportOptions()
    {
        return $this->aliasOf->getTransportOptions();
    }

public function setDistMirrors($mirrors)
    {
        $this->aliasOf->setDistMirrors($mirrors);
    }

public function getDistMirrors()
    {
        return $this->aliasOf->getDistMirrors();
    }

public function getAutoload()
    {
        return $this->aliasOf->getAutoload();
    }

public function getDevAutoload()
    {
        return $this->aliasOf->getDevAutoload();
    }

public function getIncludePaths()
    {
        return $this->aliasOf->getIncludePaths();
    }

public function getReleaseDate()
    {
        return $this->aliasOf->getReleaseDate();
    }

public function getBinaries()
    {
        return $this->aliasOf->getBinaries();
    }

public function getSuggests()
    {
        return $this->aliasOf->getSuggests();
    }

public function getNotificationUrl()
    {
        return $this->aliasOf->getNotificationUrl();
    }

public function isDefaultBranch()
    {
        return $this->aliasOf->isDefaultBranch();
    }

public function setDistUrl($url)
    {
        $this->aliasOf->setDistUrl($url);
    }

public function setDistType($type)
    {
        $this->aliasOf->setDistType($type);
    }

public function setSourceDistReferences($reference)
    {
        $this->aliasOf->setSourceDistReferences($reference);
    }
}
<?php

namespace Composer\Package;

use Composer\Json\JsonFile;
use Composer\Installer\InstallationManager;
use Composer\Pcre\Preg;
use Composer\Repository\LockArrayRepository;
use Composer\Util\ProcessExecutor;
use Composer\Package\Dumper\ArrayDumper;
use Composer\Package\Loader\ArrayLoader;
use Composer\Package\Version\VersionParser;
use Composer\Plugin\PluginInterface;
use Composer\Util\Git as GitUtil;
use Composer\IO\IOInterface;
use Seld\JsonLint\ParsingException;

/**
 * Reads/writes project lockfile (composer.lock).
 *
 * @author Konstantin Kudryashiv <ever.zet@gmail.com>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class Locker
{
    /** @var JsonFile */
    private $lockFile;
    /** @var InstallationManager */
    private $installationManager;
    /** @var string */
    private $hash;
    /** @var string */
    private $contentHash;
    /** @var ArrayLoader */
    private $loader;
    /** @var ArrayDumper */
    private $dumper;
    /** @var ProcessExecutor */
    private $process;
    /** @var mixed[]|null */
    private $lockDataCache = null;
    /** @var bool */
    private $virtualFileWritten = false;

/**
     * Initializes packages locker.
     *
     * @param IOInterface         $io
     * @param JsonFile            $lockFile             lockfile loader
     * @param InstallationManager $installationManager  installation manager instance
     * @param string              $composerFileContents The contents of the composer file
     */
    public function __construct(IOInterface $io, JsonFile $lockFile, InstallationManager $installationManager, $composerFileContents, ProcessExecutor $process = null)
    {
        $this->lockFile = $lockFile;
        $this->installationManager = $installationManager;
        $this->hash = md5($composerFileContents);
        $this->contentHash = self::getContentHash($composerFileContents);
        $this->loader = new ArrayLoader(null, true);
        $this->dumper = new ArrayDumper();
        $this->process = $process ?: new ProcessExecutor($io);
    }

/**
     * Returns the md5 hash of the sorted content of the composer file.
     *
     * @param string $composerFileContents The contents of the composer file.
     *
     * @return string
     */
    public static function getContentHash($composerFileContents)
    {
        $content = json_decode($composerFileContents, true);

$relevantKeys = array(
            'name',
            'version',
            'require',
            'require-dev',
            'conflict',
            'replace',
            'provide',
            'minimum-stability',
            'prefer-stable',
            'repositories',
            'extra',
        );

$relevantContent = array();

foreach (array_intersect($relevantKeys, array_keys($content)) as $key) {
            $relevantContent[$key] = $content[$key];
        }
        if (isset($content['config']['platform'])) {
            $relevantContent['config']['platform'] = $content['config']['platform'];
        }

ksort($relevantContent);

return md5(json_encode($relevantContent));
    }

/**
     * Checks whether locker has been locked (lockfile found).
     *
     * @return bool
     */
    public function isLocked()
    {
        if (!$this->virtualFileWritten && !$this->lockFile->exists()) {
            return false;
        }

$data = $this->getLockData();

return isset($data['packages']);
    }

/**
     * Checks whether the lock file is still up to date with the current hash
     *
     * @return bool
     */
    public function isFresh()
    {
        $lock = $this->lockFile->read();

if (!empty($lock['content-hash'])) {
            // There is a content hash key, use that instead of the file hash
            return $this->contentHash === $lock['content-hash'];
        }

// BC support for old lock files without content-hash
        if (!empty($lock['hash'])) {
            return $this->hash === $lock['hash'];
        }

// should not be reached unless the lock file is corrupted, so assume it's out of date
        return false;
    }

/**
     * Searches and returns an array of locked packages, retrieved from registered repositories.
     *
     * @param  bool                                     $withDevReqs true to retrieve the locked dev packages
     * @throws \RuntimeException
     * @return \Composer\Repository\LockArrayRepository
     */
    public function getLockedRepository($withDevReqs = false)
    {
        $lockData = $this->getLockData();
        $packages = new LockArrayRepository();

$lockedPackages = $lockData['packages'];
        if ($withDevReqs) {
            if (isset($lockData['packages-dev'])) {
                $lockedPackages = array_merge($lockedPackages, $lockData['packages-dev']);
            } else {
                throw new \RuntimeException('The lock file does not contain require-dev information, run install with the --no-dev option or delete it and run composer update to generate a new lock file.');
            }
        }

if (empty($lockedPackages)) {
            return $packages;
        }

if (isset($lockedPackages[0]['name'])) {
            $packageByName = array();
            foreach ($lockedPackages as $info) {
                $package = $this->loader->load($info);
                $packages->addPackage($package);
                $packageByName[$package->getName()] = $package;

if ($package instanceof AliasPackage) {
                    $packageByName[$package->getAliasOf()->getName()] = $package->getAliasOf();
                }
            }

if (isset($lockData['aliases'])) {
                foreach ($lockData['aliases'] as $alias) {
                    if (isset($packageByName[$alias['package']])) {
                        $aliasPkg = new CompleteAliasPackage($packageByName[$alias['package']], $alias['alias_normalized'], $alias['alias']);
                        $aliasPkg->setRootPackageAlias(true);
                        $packages->addPackage($aliasPkg);
                    }
                }
            }

return $packages;
        }

throw new \RuntimeException('Your composer.lock is invalid. Run "composer update" to generate a new one.');
    }

/**
     * @return string[] Names of dependencies installed through require-dev
     */
    public function getDevPackageNames()
    {
        $names = array();
        $lockData = $this->getLockData();
        if (isset($lockData['packages-dev'])) {
            foreach ($lockData['packages-dev'] as $package) {
                $names[] = strtolower($package['name']);
            }
        }

return $names;
    }

/**
     * Returns the platform requirements stored in the lock file
     *
     * @param  bool                     $withDevReqs if true, the platform requirements from the require-dev block are also returned
     * @return \Composer\Package\Link[]
     */
    public function getPlatformRequirements($withDevReqs = false)
    {
        $lockData = $this->getLockData();
        $requirements = array();

if (!empty($lockData['platform'])) {
            $requirements = $this->loader->parseLinks(
                '__root__',
                '1.0.0',
                Link::TYPE_REQUIRE,
                isset($lockData['platform']) ? $lockData['platform'] : array()
            );
        }

if ($withDevReqs && !empty($lockData['platform-dev'])) {
            $devRequirements = $this->loader->parseLinks(
                '__root__',
                '1.0.0',
                Link::TYPE_REQUIRE,
                isset($lockData['platform-dev']) ? $lockData['platform-dev'] : array()
            );

$requirements = array_merge($requirements, $devRequirements);
        }

return $requirements;
    }

/**
     * @return string
     */
    public function getMinimumStability()
    {
        $lockData = $this->getLockData();

return isset($lockData['minimum-stability']) ? $lockData['minimum-stability'] : 'stable';
    }

/**
     * @return array<string, string>
     */
    public function getStabilityFlags()
    {
        $lockData = $this->getLockData();

return isset($lockData['stability-flags']) ? $lockData['stability-flags'] : array();
    }

/**
     * @return bool|null
     */
    public function getPreferStable()
    {
        $lockData = $this->getLockData();

// return null if not set to allow caller logic to choose the
        // right behavior since old lock files have no prefer-stable
        return isset($lockData['prefer-stable']) ? $lockData['prefer-stable'] : null;
    }

/**
     * @return bool|null
     */
    public function getPreferLowest()
    {
        $lockData = $this->getLockData();

// return null if not set to allow caller logic to choose the
        // right behavior since old lock files have no prefer-lowest
        return isset($lockData['prefer-lowest']) ? $lockData['prefer-lowest'] : null;
    }

/**
     * @return array<string, string>
     */
    public function getPlatformOverrides()
    {
        $lockData = $this->getLockData();

return isset($lockData['platform-overrides']) ? $lockData['platform-overrides'] : array();
    }

/**
     * @return string[][]
     *
     * @phpstan-return list<array{package: string, version: string, alias: string, alias_normalized: string}>
     */
    public function getAliases()
    {
        $lockData = $this->getLockData();

return isset($lockData['aliases']) ? $lockData['aliases'] : array();
    }

/**
     * @return array<string, mixed>
     */
    public function getLockData()
    {
        if (null !== $this->lockDataCache) {
            return $this->lockDataCache;
        }

if (!$this->lockFile->exists()) {
            throw new \LogicException('No lockfile found. Unable to read locked packages');
        }

return $this->lockDataCache = $this->lockFile->read();
    }

/**
     * Locks provided data into lockfile.
     *
     * @param PackageInterface[]      $packages          array of packages
     * @param PackageInterface[]|null $devPackages       array of dev packages or null if installed without --dev
     * @param array<string, string>   $platformReqs      array of package name => constraint for required platform packages
     * @param array<string, string>   $platformDevReqs   array of package name => constraint for dev-required platform packages
     * @param string[][]              $aliases           array of aliases
     * @param string                  $minimumStability
     * @param array<string, int>      $stabilityFlags
     * @param bool                    $preferStable
     * @param bool                    $preferLowest
     * @param array<string, string>   $platformOverrides
     * @param bool                    $write             Whether to actually write data to disk, useful in tests and for --dry-run
     *
     * @return bool
     *
     * @phpstan-param list<array{package: string, version: string, alias: string, alias_normalized: string}> $aliases
     */
    public function setLockData(array $packages, $devPackages, array $platformReqs, $platformDevReqs, array $aliases, $minimumStability, array $stabilityFlags, $preferStable, $preferLowest, array $platformOverrides, $write = true)
    {
        // keep old default branch names normalized to DEFAULT_BRANCH_ALIAS for BC as that is how Composer 1 outputs the lock file
        // when loading the lock file the version is anyway ignored in Composer 2, so it has no adverse effect
        $aliases = array_map(function ($alias) {
            if (in_array($alias['version'], array('dev-master', 'dev-trunk', 'dev-default'), true)) {
                $alias['version'] = VersionParser::DEFAULT_BRANCH_ALIAS;
            }

return $alias;
        }, $aliases);

$lock = array(
            '_readme' => array('This file locks the dependencies of your project to a known state',
                               'Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies',
                               'This file is @gener'.'ated automatically', ),
            'content-hash' => $this->contentHash,
            'packages' => null,
            'packages-dev' => null,
            'aliases' => $aliases,
            'minimum-stability' => $minimumStability,
            'stability-flags' => $stabilityFlags,
            'prefer-stable' => $preferStable,
            'prefer-lowest' => $preferLowest,
        );

$lock['packages'] = $this->lockPackages($packages);
        if (null !== $devPackages) {
            $lock['packages-dev'] = $this->lockPackages($devPackages);
        }

$lock['platform'] = $platformReqs;
        $lock['platform-dev'] = $platformDevReqs;
        if ($platformOverrides) {
            $lock['platform-overrides'] = $platformOverrides;
        }
        $lock['plugin-api-version'] = PluginInterface::PLUGIN_API_VERSION;

try {
            $isLocked = $this->isLocked();
        } catch (ParsingException $e) {
            $isLocked = false;
        }
        if (!$isLocked || $lock !== $this->getLockData()) {
            if ($write) {
                $this->lockFile->write($lock);
                $this->lockDataCache = null;
                $this->virtualFileWritten = false;
            } else {
                $this->virtualFileWritten = true;
                $this->lockDataCache = JsonFile::parseJson(JsonFile::encode($lock, 448 & JsonFile::JSON_PRETTY_PRINT));
            }

return true;
        }

return false;
    }

/**
     * @param PackageInterface[] $packages
     *
     * @return mixed[][]
     *
     * @phpstan-return list<array<string, mixed>>
     */
    private function lockPackages(array $packages)
    {
        $locked = array();

foreach ($packages as $package) {
            if ($package instanceof AliasPackage) {
                continue;
            }

$name = $package->getPrettyName();
            $version = $package->getPrettyVersion();

if (!$name || !$version) {
                throw new \LogicException(sprintf(
                    'Package "%s" has no version or name and can not be locked',
                    $package
                ));
            }

$spec = $this->dumper->dump($package);
            unset($spec['version_normalized']);

// always move time to the end of the package definition
            $time = isset($spec['time']) ? $spec['time'] : null;
            unset($spec['time']);
            if ($package->isDev() && $package->getInstallationSource() === 'source') {
                // use the exact commit time of the current reference if it's a dev package
                $time = $this->getPackageTime($package) ?: $time;
            }
            if (null !== $time) {
                $spec['time'] = $time;
            }

unset($spec['installation-source']);

$locked[] = $spec;
        }

usort($locked, function ($a, $b) {
            $comparison = strcmp($a['name'], $b['name']);

if (0 !== $comparison) {
                return $comparison;
            }

// If it is the same package, compare the versions to make the order deterministic
            return strcmp($a['version'], $b['version']);
        });

return $locked;
    }

/**
     * Returns the packages's datetime for its source reference.
     *
     * @param  PackageInterface $package The package to scan.
     * @return string|null      The formatted datetime or null if none was found.
     */
    private function getPackageTime(PackageInterface $package)
    {
        if (!function_exists('proc_open')) {
            return null;
        }

$path = realpath($this->installationManager->getInstallPath($package));
        $sourceType = $package->getSourceType();
        $datetime = null;

if ($path && in_array($sourceType, array('git', 'hg'))) {
            $sourceRef = $package->getSourceReference() ?: $package->getDistReference();
            switch ($sourceType) {
                case 'git':
                    GitUtil::cleanEnv();

if (0 === $this->process->execute('git log -n1 --pretty=%ct '.ProcessExecutor::escape($sourceRef).GitUtil::getNoShowSignatureFlag($this->process), $output, $path) && Preg::isMatch('{^\s*\d+\s*$}', $output)) {
                        $datetime = new \DateTime('@'.trim($output), new \DateTimeZone('UTC'));
                    }
                    break;

case 'hg':
                    if (0 === $this->process->execute('hg log --template "{date|hgdate}" -r '.ProcessExecutor::escape($sourceRef), $output, $path) && Preg::isMatch('{^\s*(\d+)\s*}', $output, $match)) {
                        $datetime = new \DateTime('@'.$match[1], new \DateTimeZone('UTC'));
                    }
                    break;
            }
        }

return $datetime ? $datetime->format(DATE_RFC3339) : null;
    }
}
<?php

namespace Composer\Package;

use Composer\Package\Version\VersionParser;
use Composer\Pcre\Preg;
use Composer\Util\ComposerMirror;

/**
 * Core package definitions that are needed to resolve dependencies and install packages
 *
 * @author Nils Adermann <naderman@naderman.de>
 */
class Package extends BasePackage
{
    /** @var string */
    protected $type;
    /** @var ?string */
    protected $targetDir;
    /** @var 'source'|'dist'|null */
    protected $installationSource;
    /** @var ?string */
    protected $sourceType;
    /** @var ?string */
    protected $sourceUrl;
    /** @var ?string */
    protected $sourceReference;
    /** @var ?array<int, array{url: string, preferred: bool}> */
    protected $sourceMirrors;
    /** @var ?string */
    protected $distType;
    /** @var ?string */
    protected $distUrl;
    /** @var ?string */
    protected $distReference;
    /** @var ?string */
    protected $distSha1Checksum;
    /** @var ?array<int, array{url: string, preferred: bool}> */
    protected $distMirrors;
    /** @var string */
    protected $version;
    /** @var string */
    protected $prettyVersion;
    /** @var ?\DateTime */
    protected $releaseDate;
    /** @var mixed[] */
    protected $extra = array();
    /** @var string[] */
    protected $binaries = array();
    /** @var bool */
    protected $dev;
    /**
     * @var string
     * @phpstan-var 'stable'|'RC'|'beta'|'alpha'|'dev'
     */
    protected $stability;
    /** @var ?string */
    protected $notificationUrl;

/** @var array<string, Link> */
    protected $requires = array();
    /** @var array<string, Link> */
    protected $conflicts = array();
    /** @var array<string, Link> */
    protected $provides = array();
    /** @var array<string, Link> */
    protected $replaces = array();
    /** @var array<string, Link> */
    protected $devRequires = array();
    /** @var array<string, string> */
    protected $suggests = array();
    /** @var array{psr-0?: array<string, string|string[]>, psr-4?: array<string, string|string[]>, classmap?: list<string>, files?: list<string>} */
    protected $autoload = array();
    /** @var array{psr-0?: array<string, string|string[]>, psr-4?: array<string, string|string[]>, classmap?: list<string>, files?: list<string>} */
    protected $devAutoload = array();
    /** @var string[] */
    protected $includePaths = array();
    /** @var bool */
    protected $isDefaultBranch = false;
    /** @var mixed[] */
    protected $transportOptions = array();

/**
     * Creates a new in memory package.
     *
     * @param string $name          The package's name
     * @param string $version       The package's version
     * @param string $prettyVersion The package's non-normalized version
     */
    public function __construct($name, $version, $prettyVersion)
    {
        parent::__construct($name);

$this->version = $version;
        $this->prettyVersion = $prettyVersion;

$this->stability = VersionParser::parseStability($version);
        $this->dev = $this->stability === 'dev';
    }

/**
     * @inheritDoc
     */
    public function isDev()
    {
        return $this->dev;
    }

/**
     * @param string $type
     *
     * @return void
     */
    public function setType($type)
    {
        $this->type = $type;
    }

/**
     * @inheritDoc
     */
    public function getType()
    {
        return $this->type ?: 'library';
    }

/**
     * @inheritDoc
     */
    public function getStability()
    {
        return $this->stability;
    }

/**
     * @param string $targetDir
     *
     * @return void
     */
    public function setTargetDir($targetDir)
    {
        $this->targetDir = $targetDir;
    }

/**
     * @inheritDoc
     */
    public function getTargetDir()
    {
        if (null === $this->targetDir) {
            return null;
        }

return ltrim(Preg::replace('{ (?:^|[\\\\/]+) \.\.? (?:[\\\\/]+|$) (?:\.\.? (?:[\\\\/]+|$) )*}x', '/', $this->targetDir), '/');
    }

/**
     * @param mixed[] $extra
     *
     * @return void
     */
    public function setExtra(array $extra)
    {
        $this->extra = $extra;
    }

/**
     * @inheritDoc
     */
    public function getExtra()
    {
        return $this->extra;
    }

/**
     * @param string[] $binaries
     *
     * @return void
     */
    public function setBinaries(array $binaries)
    {
        $this->binaries = $binaries;
    }

/**
     * @inheritDoc
     */
    public function getBinaries()
    {
        return $this->binaries;
    }

/**
     * @inheritDoc
     *
     * @return void
     */
    public function setInstallationSource($type)
    {
        $this->installationSource = $type;
    }

/**
     * @inheritDoc
     */
    public function getInstallationSource()
    {
        return $this->installationSource;
    }

/**
     * @param string $type
     *
     * @return void
     */
    public function setSourceType($type)
    {
        $this->sourceType = $type;
    }

/**
     * @inheritDoc
     */
    public function getSourceType()
    {
        return $this->sourceType;
    }

/**
     * @param string $url
     *
     * @return void
     */
    public function setSourceUrl($url)
    {
        $this->sourceUrl = $url;
    }

/**
     * @inheritDoc
     */
    public function getSourceUrl()
    {
        return $this->sourceUrl;
    }

/**
     * @param string $reference
     *
     * @return void
     */
    public function setSourceReference($reference)
    {
        $this->sourceReference = $reference;
    }

/**
     * @inheritDoc
     */
    public function getSourceReference()
    {
        return $this->sourceReference;
    }

/**
     * @inheritDoc
     *
     * @return void
     */
    public function setSourceMirrors($mirrors)
    {
        $this->sourceMirrors = $mirrors;
    }

/**
     * @inheritDoc
     */
    public function getSourceMirrors()
    {
        return $this->sourceMirrors;
    }

/**
     * @inheritDoc
     */
    public function getSourceUrls()
    {
        return $this->getUrls($this->sourceUrl, $this->sourceMirrors, $this->sourceReference, $this->sourceType, 'source');
    }

/**
     * @param string $type
     *
     * @return void
     */
    public function setDistType($type)
    {
        $this->distType = $type;
    }

/**
     * @inheritDoc
     */
    public function getDistType()
    {
        return $this->distType;
    }

/**
     * @param string $url
     *
     * @return void
     */
    public function setDistUrl($url)
    {
        $this->distUrl = $url;
    }

/**
     * @inheritDoc
     */
    public function getDistUrl()
    {
        return $this->distUrl;
    }

/**
     * @param string $reference
     *
     * @return void
     */
    public function setDistReference($reference)
    {
        $this->distReference = $reference;
    }

/**
     * @inheritDoc
     */
    public function getDistReference()
    {
        return $this->distReference;
    }

/**
     * @param string $sha1checksum
     *
     * @return void
     */
    public function setDistSha1Checksum($sha1checksum)
    {
        $this->distSha1Checksum = $sha1checksum;
    }

/**
     * @inheritDoc
     */
    public function getDistSha1Checksum()
    {
        return $this->distSha1Checksum;
    }

/**
     * @inheritDoc
     *
     * @return void
     */
    public function setDistMirrors($mirrors)
    {
        $this->distMirrors = $mirrors;
    }

/**
     * @inheritDoc
     */
    public function getDistMirrors()
    {
        return $this->distMirrors;
    }

/**
     * @inheritDoc
     */
    public function getDistUrls()
    {
        return $this->getUrls($this->distUrl, $this->distMirrors, $this->distReference, $this->distType, 'dist');
    }

/**
     * @inheritDoc
     */
    public function getTransportOptions()
    {
        return $this->transportOptions;
    }

/**
     * @inheritDoc
     */
    public function setTransportOptions(array $options)
    {
        $this->transportOptions = $options;
    }

/**
     * @inheritDoc
     */
    public function getVersion()
    {
        return $this->version;
    }

/**
     * @inheritDoc
     */
    public function getPrettyVersion()
    {
        return $this->prettyVersion;
    }

/**
     * Set the releaseDate
     *
     * @param \DateTime $releaseDate
     *
     * @return void
     */
    public function setReleaseDate(\DateTime $releaseDate)
    {
        $this->releaseDate = $releaseDate;
    }

/**
     * @inheritDoc
     */
    public function getReleaseDate()
    {
        return $this->releaseDate;
    }

/**
     * Set the required packages
     *
     * @param array<string, Link> $requires A set of package links
     *
     * @return void
     */
    public function setRequires(array $requires)
    {
        if (isset($requires[0])) { // @phpstan-ignore-line
            $requires = $this->convertLinksToMap($requires, 'setRequires');
        }

$this->requires = $requires;
    }

/**
     * @inheritDoc
     */
    public function getRequires()
    {
        return $this->requires;
    }

/**
     * Set the conflicting packages
     *
     * @param array<string, Link> $conflicts A set of package links
     *
     * @return void
     */
    public function setConflicts(array $conflicts)
    {
        if (isset($conflicts[0])) { // @phpstan-ignore-line
            $conflicts = $this->convertLinksToMap($conflicts, 'setConflicts');
        }

$this->conflicts = $conflicts;
    }

/**
     * @inheritDoc
     * @return array<string, Link>
     */
    public function getConflicts()
    {
        return $this->conflicts;
    }

/**
     * Set the provided virtual packages
     *
     * @param array<string, Link> $provides A set of package links
     *
     * @return void
     */
    public function setProvides(array $provides)
    {
        if (isset($provides[0])) { // @phpstan-ignore-line
            $provides = $this->convertLinksToMap($provides, 'setProvides');
        }

$this->provides = $provides;
    }

/**
     * @inheritDoc
     * @return array<string, Link>
     */
    public function getProvides()
    {
        return $this->provides;
    }

/**
     * Set the packages this one replaces
     *
     * @param array<string, Link> $replaces A set of package links
     *
     * @return void
     */
    public function setReplaces(array $replaces)
    {
        if (isset($replaces[0])) { // @phpstan-ignore-line
            $replaces = $this->convertLinksToMap($replaces, 'setReplaces');
        }

$this->replaces = $replaces;
    }

/**
     * @inheritDoc
     * @return array<string, Link>
     */
    public function getReplaces()
    {
        return $this->replaces;
    }

/**
     * Set the recommended packages
     *
     * @param array<string, Link> $devRequires A set of package links
     *
     * @return void
     */
    public function setDevRequires(array $devRequires)
    {
        if (isset($devRequires[0])) { // @phpstan-ignore-line
            $devRequires = $this->convertLinksToMap($devRequires, 'setDevRequires');
        }

$this->devRequires = $devRequires;
    }

/**
     * @inheritDoc
     */
    public function getDevRequires()
    {
        return $this->devRequires;
    }

/**
     * Set the suggested packages
     *
     * @param array<string, string> $suggests A set of package names/comments
     *
     * @return void
     */
    public function setSuggests(array $suggests)
    {
        $this->suggests = $suggests;
    }

/**
     * @inheritDoc
     */
    public function getSuggests()
    {
        return $this->suggests;
    }

/**
     * Set the autoload mapping
     *
     * @param array $autoload Mapping of autoloading rules
     *
     * @return void
     *
     * @phpstan-param array{psr-0?: array<string, string|string[]>, psr-4?: array<string, string|string[]>, classmap?: list<string>, files?: list<string>} $autoload
     */
    public function setAutoload(array $autoload)
    {
        $this->autoload = $autoload;
    }

/**
     * @inheritDoc
     */
    public function getAutoload()
    {
        return $this->autoload;
    }

/**
     * Set the dev autoload mapping
     *
     * @param array $devAutoload Mapping of dev autoloading rules
     *
     * @return void
     *
     * @phpstan-param array{psr-0?: array<string, string|string[]>, psr-4?: array<string, string|string[]>, classmap?: list<string>, files?: list<string>} $devAutoload
     */
    public function setDevAutoload(array $devAutoload)
    {
        $this->devAutoload = $devAutoload;
    }

/**
     * @inheritDoc
     */
    public function getDevAutoload()
    {
        return $this->devAutoload;
    }

/**
     * Sets the list of paths added to PHP's include path.
     *
     * @param string[] $includePaths List of directories.
     *
     * @return void
     */
    public function setIncludePaths(array $includePaths)
    {
        $this->includePaths = $includePaths;
    }

/**
     * @inheritDoc
     */
    public function getIncludePaths()
    {
        return $this->includePaths;
    }

/**
     * Sets the notification URL
     *
     * @param string $notificationUrl
     *
     * @return void
     */
    public function setNotificationUrl($notificationUrl)
    {
        $this->notificationUrl = $notificationUrl;
    }

/**
     * @inheritDoc
     */
    public function getNotificationUrl()
    {
        return $this->notificationUrl;
    }

/**
     * @param bool $defaultBranch
     *
     * @return void
     */
    public function setIsDefaultBranch($defaultBranch)
    {
        $this->isDefaultBranch = $defaultBranch;
    }

/**
     * @inheritDoc
     */
    public function isDefaultBranch()
    {
        return $this->isDefaultBranch;
    }

/**
     * @inheritDoc
     */
    public function setSourceDistReferences($reference)
    {
        $this->setSourceReference($reference);

// only bitbucket, github and gitlab have auto generated dist URLs that easily allow replacing the reference in the dist URL
        // TODO generalize this a bit for self-managed/on-prem versions? Some kind of replace token in dist urls which allow this?
        if (
            $this->getDistUrl() !== null
            && Preg::isMatch('{^https?://(?:(?:www\.)?bitbucket\.org|(api\.)?github\.com|(?:www\.)?gitlab\.com)/}i', $this->getDistUrl())
        ) {
            $this->setDistReference($reference);
            $this->setDistUrl(Preg::replace('{(?<=/|sha=)[a-f0-9]{40}(?=/|$)}i', $reference, $this->getDistUrl()));
        } elseif ($this->getDistReference()) { // update the dist reference if there was one, but if none was provided ignore it
            $this->setDistReference($reference);
        }
    }

/**
     * Replaces current version and pretty version with passed values.
     * It also sets stability.
     *
     * @param string $version       The package's normalized version
     * @param string $prettyVersion The package's non-normalized version
     *
     * @return void
     */
    public function replaceVersion($version, $prettyVersion)
    {
        $this->version = $version;
        $this->prettyVersion = $prettyVersion;

$this->stability = VersionParser::parseStability($version);
        $this->dev = $this->stability === 'dev';
    }

/**
     * @param string|null  $url
     * @param mixed[]|null $mirrors
     * @param string|null  $ref
     * @param string|null  $type
     * @param string       $urlType
     *
     * @return string[]
     *
     * @phpstan-param list<array{url: string, preferred: bool}>|null $mirrors
     */
    protected function getUrls($url, $mirrors, $ref, $type, $urlType)
    {
        if (!$url) {
            return array();
        }

if ($urlType === 'dist' && false !== strpos($url, '%')) {
            $url = ComposerMirror::processUrl($url, $this->name, $this->version, $ref, $type, $this->prettyVersion);
        }

$urls = array($url);
        if ($mirrors) {
            foreach ($mirrors as $mirror) {
                if ($urlType === 'dist') {
                    $mirrorUrl = ComposerMirror::processUrl($mirror['url'], $this->name, $this->version, $ref, $type, $this->prettyVersion);
                } elseif ($urlType === 'source' && $type === 'git') {
                    $mirrorUrl = ComposerMirror::processGitUrl($mirror['url'], $this->name, $url, $type);
                } elseif ($urlType === 'source' && $type === 'hg') {
                    $mirrorUrl = ComposerMirror::processHgUrl($mirror['url'], $this->name, $url, $type);
                } else {
                    continue;
                }
                if (!\in_array($mirrorUrl, $urls)) {
                    $func = $mirror['preferred'] ? 'array_unshift' : 'array_push';
                    $func($urls, $mirrorUrl);
                }
            }
        }

return $urls;
    }

/**
     * @param  array<int, Link> $links
     * @param  string $source
     * @return array<string, Link>
     */
    private function convertLinksToMap(array $links, $source)
    {
        trigger_error('Package::'.$source.' must be called with a map of lowercased package name => Link object, got a indexed array, this is deprecated and you should fix your usage.');
        $newLinks = array();
        foreach ($links as $link) {
            $newLinks[$link->getTarget()] = $link;
        }

return $newLinks;
    }
}
<?php

namespace Composer\Package;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class CompleteAliasPackage extends AliasPackage implements CompletePackageInterface
{
    /** @var CompletePackage */
    protected $aliasOf;

/**
     * All descendants' constructors should call this parent constructor
     *
     * @param CompletePackage $aliasOf       The package this package is an alias of
     * @param string          $version       The version the alias must report
     * @param string          $prettyVersion The alias's non-normalized version
     */
    public function __construct(CompletePackage $aliasOf, $version, $prettyVersion)
    {
        parent::__construct($aliasOf, $version, $prettyVersion);
    }

/**
     * @return CompletePackage
     */
    public function getAliasOf()
    {
        return $this->aliasOf;
    }

public function getScripts()
    {
        return $this->aliasOf->getScripts();
    }

public function setScripts(array $scripts)
    {
        $this->aliasOf->setScripts($scripts);
    }

public function getRepositories()
    {
        return $this->aliasOf->getRepositories();
    }

public function setRepositories(array $repositories)
    {
        $this->aliasOf->setRepositories($repositories);
    }

public function getLicense()
    {
        return $this->aliasOf->getLicense();
    }

public function setLicense(array $license)
    {
        $this->aliasOf->setLicense($license);
    }

public function getKeywords()
    {
        return $this->aliasOf->getKeywords();
    }

public function setKeywords(array $keywords)
    {
        $this->aliasOf->setKeywords($keywords);
    }

public function getDescription()
    {
        return $this->aliasOf->getDescription();
    }

public function setDescription($description)
    {
        $this->aliasOf->setDescription($description);
    }

public function getHomepage()
    {
        return $this->aliasOf->getHomepage();
    }

public function setHomepage($homepage)
    {
        $this->aliasOf->setHomepage($homepage);
    }

public function getAuthors()
    {
        return $this->aliasOf->getAuthors();
    }

public function setAuthors(array $authors)
    {
        $this->aliasOf->setAuthors($authors);
    }

public function getSupport()
    {
        return $this->aliasOf->getSupport();
    }

public function setSupport(array $support)
    {
        $this->aliasOf->setSupport($support);
    }

public function getFunding()
    {
        return $this->aliasOf->getFunding();
    }

public function setFunding(array $funding)
    {
        $this->aliasOf->setFunding($funding);
    }

public function isAbandoned()
    {
        return $this->aliasOf->isAbandoned();
    }

public function getReplacementPackage()
    {
        return $this->aliasOf->getReplacementPackage();
    }

public function setAbandoned($abandoned)
    {
        $this->aliasOf->setAbandoned($abandoned);
    }

public function getArchiveName()
    {
        return $this->aliasOf->getArchiveName();
    }

public function setArchiveName($name)
    {
        $this->aliasOf->setArchiveName($name);
    }

public function getArchiveExcludes()
    {
        return $this->aliasOf->getArchiveExcludes();
    }

public function setArchiveExcludes(array $excludes)
    {
        $this->aliasOf->setArchiveExcludes($excludes);
    }
}
<?php

namespace Composer\Package\Comparer;

/**
 * class Comparer
 *
 * @author Hector Prats <hectorpratsortega@gmail.com>
 */
class Comparer
{
    /** @var string Source directory */
    private $source;
    /** @var string Target directory */
    private $update;
    /** @var array{changed?: string[], removed?: string[], added?: string[]} */
    private $changed;

/**
     * @param string $source
     *
     * @return void
     */
    public function setSource($source)
    {
        $this->source = $source;
    }

/**
     * @param string $update
     *
     * @return void
     */
    public function setUpdate($update)
    {
        $this->update = $update;
    }

/**
     * @param bool $toString
     * @param bool $explicated
     *
     * @return array{changed?: string[], removed?: string[], added?: string[]}|string|false false if no change, string only if $toString is true
     */
    public function getChanged($toString = false, $explicated = false)
    {
        $changed = $this->changed;
        if (!count($changed)) {
            return false;
        }
        if ($explicated) {
            foreach ($changed as $sectionKey => $itemSection) {
                foreach ($itemSection as $itemKey => $item) {
                    $changed[$sectionKey][$itemKey] = $item.' ('.$sectionKey.')';
                }
            }
        }

if ($toString) {
            $strings = array();
            foreach ($changed as $sectionKey => $itemSection) {
                foreach ($itemSection as $itemKey => $item) {
                    $strings[] = $item."\r\n";
                }
            }
            $changed = implode("\r\n", $strings);
        }

return $changed;
    }

/**
     * @return void
     */
    public function doCompare()
    {
        $source = array();
        $destination = array();
        $this->changed = array();
        $currentDirectory = getcwd();
        chdir($this->source);
        $source = $this->doTree('.', $source);
        if (!is_array($source)) {
            return;
        }
        chdir($currentDirectory);
        chdir($this->update);
        $destination = $this->doTree('.', $destination);
        if (!is_array($destination)) {
            exit;
        }
        chdir($currentDirectory);
        foreach ($source as $dir => $value) {
            foreach ($value as $file => $hash) {
                if (isset($destination[$dir][$file])) {
                    if ($hash !== $destination[$dir][$file]) {
                        $this->changed['changed'][] = $dir.'/'.$file;
                    }
                } else {
                    $this->changed['removed'][] = $dir.'/'.$file;
                }
            }
        }
        foreach ($destination as $dir => $value) {
            foreach ($value as $file => $hash) {
                if (!isset($source[$dir][$file])) {
                    $this->changed['added'][] = $dir.'/'.$file;
                }
            }
        }
    }

/**
     * @param string $dir
     * @param mixed $array
     *
     * @return array<string, array<string, string|false>>|false
     */
    private function doTree($dir, &$array)
    {
        if ($dh = opendir($dir)) {
            while ($file = readdir($dh)) {
                if ($file !== '.' && $file !== '..') {
                    if (is_link($dir.'/'.$file)) {
                        $array[$dir][$file] = readlink($dir.'/'.$file);
                    } elseif (is_dir($dir.'/'.$file)) {
                        if (!count($array)) {
                            $array[0] = 'Temp';
                        }
                        if (!$this->doTree($dir.'/'.$file, $array)) {
                            return false;
                        }
                    } elseif (is_file($dir.'/'.$file) && filesize($dir.'/'.$file)) {
                        $array[$dir][$file] = md5_file($dir.'/'.$file);
                    }
                }
            }
            if (count($array) > 1 && isset($array['0'])) {
                unset($array['0']);
            }

return $array;
        }

return false;
    }
}
<?php

namespace Composer\Package;

/**
 * The root package represents the project's composer.json and contains additional metadata
 *
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class RootPackage extends CompletePackage implements RootPackageInterface
{
    const DEFAULT_PRETTY_VERSION = '1.0.0+no-version-set';

/** @var string */
    protected $minimumStability = 'stable';
    /** @var bool */
    protected $preferStable = false;
    /** @var array<string, BasePackage::STABILITY_*> Map of package name to stability constant */
    protected $stabilityFlags = array();
    /** @var mixed[] */
    protected $config = array();
    /** @var array<string, string> Map of package name to reference/commit hash */
    protected $references = array();
    /** @var array<array{package: string, version: string, alias: string, alias_normalized: string}> */
    protected $aliases = array();

/**
     * {@inerhitDoc}
     */
    public function setMinimumStability($minimumStability)
    {
        $this->minimumStability = $minimumStability;
    }

/**
     * @inheritDoc
     */
    public function getMinimumStability()
    {
        return $this->minimumStability;
    }

/**
     * @inheritDoc
     */
    public function setStabilityFlags(array $stabilityFlags)
    {
        $this->stabilityFlags = $stabilityFlags;
    }

/**
     * @inheritDoc
     */
    public function getStabilityFlags()
    {
        return $this->stabilityFlags;
    }

/**
     * {@inerhitDoc}
     */
    public function setPreferStable($preferStable)
    {
        $this->preferStable = $preferStable;
    }

/**
     * @inheritDoc
     */
    public function getPreferStable()
    {
        return $this->preferStable;
    }

/**
     * {@inerhitDoc}
     */
    public function setConfig(array $config)
    {
        $this->config = $config;
    }

/**
     * @inheritDoc
     */
    public function getConfig()
    {
        return $this->config;
    }

/**
     * {@inerhitDoc}
     */
    public function setReferences(array $references)
    {
        $this->references = $references;
    }

/**
     * @inheritDoc
     */
    public function getReferences()
    {
        return $this->references;
    }

/**
     * {@inerhitDoc}
     */
    public function setAliases(array $aliases)
    {
        $this->aliases = $aliases;
    }

/**
     * @inheritDoc
     */
    public function getAliases()
    {
        return $this->aliases;
    }
}
<?php

namespace Composer\Package;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class RootAliasPackage extends CompleteAliasPackage implements RootPackageInterface
{
    /** @var RootPackage */
    protected $aliasOf;

/**
     * All descendants' constructors should call this parent constructor
     *
     * @param RootPackage $aliasOf       The package this package is an alias of
     * @param string      $version       The version the alias must report
     * @param string      $prettyVersion The alias's non-normalized version
     */
    public function __construct(RootPackage $aliasOf, $version, $prettyVersion)
    {
        parent::__construct($aliasOf, $version, $prettyVersion);
    }

/**
     * @return RootPackage
     */
    public function getAliasOf()
    {
        return $this->aliasOf;
    }

/**
     * @inheritDoc
     */
    public function getAliases()
    {
        return $this->aliasOf->getAliases();
    }

/**
     * @inheritDoc
     */
    public function getMinimumStability()
    {
        return $this->aliasOf->getMinimumStability();
    }

/**
     * @inheritDoc
     */
    public function getStabilityFlags()
    {
        return $this->aliasOf->getStabilityFlags();
    }

/**
     * @inheritDoc
     */
    public function getReferences()
    {
        return $this->aliasOf->getReferences();
    }

/**
     * @inheritDoc
     */
    public function getPreferStable()
    {
        return $this->aliasOf->getPreferStable();
    }

/**
     * @inheritDoc
     */
    public function getConfig()
    {
        return $this->aliasOf->getConfig();
    }

/**
     * @inheritDoc
     */
    public function setRequires(array $require)
    {
        $this->requires = $this->replaceSelfVersionDependencies($require, Link::TYPE_REQUIRE);

$this->aliasOf->setRequires($require);
    }

/**
     * @inheritDoc
     */
    public function setDevRequires(array $devRequire)
    {
        $this->devRequires = $this->replaceSelfVersionDependencies($devRequire, Link::TYPE_DEV_REQUIRE);

$this->aliasOf->setDevRequires($devRequire);
    }

/**
     * @inheritDoc
     */
    public function setConflicts(array $conflicts)
    {
        $this->conflicts = $this->replaceSelfVersionDependencies($conflicts, Link::TYPE_CONFLICT);
        $this->aliasOf->setConflicts($conflicts);
    }

/**
     * @inheritDoc
     */
    public function setProvides(array $provides)
    {
        $this->provides = $this->replaceSelfVersionDependencies($provides, Link::TYPE_PROVIDE);
        $this->aliasOf->setProvides($provides);
    }

/**
     * @inheritDoc
     */
    public function setReplaces(array $replaces)
    {
        $this->replaces = $this->replaceSelfVersionDependencies($replaces, Link::TYPE_REPLACE);
        $this->aliasOf->setReplaces($replaces);
    }

/**
     * @inheritDoc
     */
    public function setAutoload(array $autoload)
    {
        $this->aliasOf->setAutoload($autoload);
    }

/**
     * @inheritDoc
     */
    public function setDevAutoload(array $devAutoload)
    {
        $this->aliasOf->setDevAutoload($devAutoload);
    }

/**
     * @inheritDoc
     */
    public function setStabilityFlags(array $stabilityFlags)
    {
        $this->aliasOf->setStabilityFlags($stabilityFlags);
    }

/**
     * @inheritDoc
     */
    public function setMinimumStability($minimumStability)
    {
        $this->aliasOf->setMinimumStability($minimumStability);
    }

/**
     * @inheritDoc
     */
    public function setPreferStable($preferStable)
    {
        $this->aliasOf->setPreferStable($preferStable);
    }

/**
     * @inheritDoc
     */
    public function setConfig(array $config)
    {
        $this->aliasOf->setConfig($config);
    }

/**
     * @inheritDoc
     */
    public function setReferences(array $references)
    {
        $this->aliasOf->setReferences($references);
    }

/**
     * @inheritDoc
     */
    public function setAliases(array $aliases)
    {
        $this->aliasOf->setAliases($aliases);
    }

/**
     * @inheritDoc
     */
    public function setSuggests(array $suggests)
    {
        $this->aliasOf->setSuggests($suggests);
    }

/**
     * @inheritDoc
     */
    public function setExtra(array $extra)
    {
        $this->aliasOf->setExtra($extra);
    }

public function __clone()
    {
        parent::__clone();
        $this->aliasOf = clone $this->aliasOf;
    }
}
<?php

namespace Composer\Package;

/**
 * Defines additional fields that are only needed for the root package
 *
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
interface RootPackageInterface extends CompletePackageInterface
{
    /**
     * Returns a set of package names and their aliases
     *
     * @return array<array{package: string, version: string, alias: string, alias_normalized: string}>
     */
    public function getAliases();

/**
     * Returns the minimum stability of the package
     *
     * @return string
     */
    public function getMinimumStability();

/**
     * Returns the stability flags to apply to dependencies
     *
     * array('foo/bar' => 'dev')
     *
     * @return array<string, BasePackage::STABILITY_*>
     */
    public function getStabilityFlags();

/**
     * Returns a set of package names and source references that must be enforced on them
     *
     * array('foo/bar' => 'abcd1234')
     *
     * @return array<string, string>
     */
    public function getReferences();

/**
     * Returns true if the root package prefers picking stable packages over unstable ones
     *
     * @return bool
     */
    public function getPreferStable();

/**
     * Returns the root package's configuration
     *
     * @return mixed[]
     */
    public function getConfig();

/**
     * Set the required packages
     *
     * @param Link[] $requires A set of package links
     *
     * @return void
     */
    public function setRequires(array $requires);

/**
     * Set the recommended packages
     *
     * @param Link[] $devRequires A set of package links
     *
     * @return void
     */
    public function setDevRequires(array $devRequires);

/**
     * Set the conflicting packages
     *
     * @param Link[] $conflicts A set of package links
     *
     * @return void
     */
    public function setConflicts(array $conflicts);

/**
     * Set the provided virtual packages
     *
     * @param Link[] $provides A set of package links
     *
     * @return void
     */
    public function setProvides(array $provides);

/**
     * Set the packages this one replaces
     *
     * @param Link[] $replaces A set of package links
     *
     * @return void
     */
    public function setReplaces(array $replaces);

/**
     * Set the repositories
     *
     * @param mixed[] $repositories
     *
     * @return void
     */
    public function setRepositories(array $repositories);

/**
     * Set the autoload mapping
     *
     * @param array{psr-0?: array<string, string|string[]>, psr-4?: array<string, string|string[]>, classmap?: list<string>, files?: list<string>} $autoload Mapping of autoloading rules
     *
     * @return void
     */
    public function setAutoload(array $autoload);

/**
     * Set the dev autoload mapping
     *
     * @param array{psr-0?: array<string, string|string[]>, psr-4?: array<string, string|string[]>, classmap?: list<string>, files?: list<string>} $devAutoload Mapping of dev autoloading rules
     *
     * @return void
     */
    public function setDevAutoload(array $devAutoload);

/**
     * Set the stabilityFlags
     *
     * @param array<string, BasePackage::STABILITY_*> $stabilityFlags
     *
     * @return void
     */
    public function setStabilityFlags(array $stabilityFlags);

/**
     * Set the minimumStability
     *
     * @param string $minimumStability
     *
     * @return void
     */
    public function setMinimumStability($minimumStability);

/**
     * Set the preferStable
     *
     * @param bool $preferStable
     *
     * @return void
     */
    public function setPreferStable($preferStable);

/**
     * Set the config
     *
     * @param mixed[] $config
     *
     * @return void
     */
    public function setConfig(array $config);

/**
     * Set the references
     *
     * @param array<string, string> $references
     *
     * @return void
     */
    public function setReferences(array $references);

/**
     * Set the aliases
     *
     * @param array<array{package: string, version: string, alias: string, alias_normalized: string}> $aliases
     *
     * @return void
     */
    public function setAliases(array $aliases);

/**
     * Set the suggested packages
     *
     * @param array<string, string> $suggests A set of package names/comments
     *
     * @return void
     */
    public function setSuggests(array $suggests);

/**
     * @param mixed[] $extra
     *
     * @return void
     */
    public function setExtra(array $extra);
}
<?php

namespace Composer\Package\Archiver;

/**
 * @author Till Klampaeckel <till@php.net>
 * @author Nils Adermann <naderman@naderman.de>
 * @author Matthieu Moquet <matthieu@moquet.net>
 */
class PharArchiver implements ArchiverInterface
{
    /** @var array<string, int> */
    protected static $formats = array(
        'zip' => \Phar::ZIP,
        'tar' => \Phar::TAR,
        'tar.gz' => \Phar::TAR,
        'tar.bz2' => \Phar::TAR,
    );

/** @var array<string, int> */
    protected static $compressFormats = array(
        'tar.gz' => \Phar::GZ,
        'tar.bz2' => \Phar::BZ2,
    );

/**
     * @inheritDoc
     */
    public function archive($sources, $target, $format, array $excludes = array(), $ignoreFilters = false)
    {
        $sources = realpath($sources);

// Phar would otherwise load the file which we don't want
        if (file_exists($target)) {
            unlink($target);
        }

try {
            $filename = substr($target, 0, strrpos($target, $format) - 1);

// Check if compress format
            if (isset(static::$compressFormats[$format])) {
                // Current compress format supported base on tar
                $target = $filename . '.tar';
            }

$phar = new \PharData(
                $target,
                \FilesystemIterator::KEY_AS_PATHNAME | \FilesystemIterator::CURRENT_AS_FILEINFO,
                '',
                static::$formats[$format]
            );
            $files = new ArchivableFilesFinder($sources, $excludes, $ignoreFilters);
            $filesOnly = new ArchivableFilesFilter($files);
            $phar->buildFromIterator($filesOnly, $sources);
            $filesOnly->addEmptyDir($phar, $sources);

if (isset(static::$compressFormats[$format])) {
                // Check can be compressed?
                if (!$phar->canCompress(static::$compressFormats[$format])) {
                    throw new \RuntimeException(sprintf('Can not compress to %s format', $format));
                }

// Delete old tar
                unlink($target);

// Compress the new tar
                $phar->compress(static::$compressFormats[$format]);

// Make the correct filename
                $target = $filename . '.' . $format;
            }

return $target;
        } catch (\UnexpectedValueException $e) {
            $message = sprintf(
                "Could not create archive '%s' from '%s': %s",
                $target,
                $sources,
                $e->getMessage()
            );

throw new \RuntimeException($message, $e->getCode(), $e);
        }
    }

/**
     * @inheritDoc
     */
    public function supports($format, $sourceType)
    {
        return isset(static::$formats[$format]);
    }
}
<?php

namespace Composer\Package\Archiver;

use Composer\Pcre\Preg;
use Composer\Util\Filesystem;
use FilesystemIterator;
use Symfony\Component\Finder\Finder;
use Symfony\Component\Finder\SplFileInfo;

/**
 * A Symfony Finder wrapper which locates files that should go into archives
 *
 * Handles .gitignore, .gitattributes and .hgignore files as well as composer's
 * own exclude rules from composer.json
 *
 * @author Nils Adermann <naderman@naderman.de>
 */
class ArchivableFilesFinder extends \FilterIterator
{
    /**
     * @var Finder
     */
    protected $finder;

/**
     * Initializes the internal Symfony Finder with appropriate filters
     *
     * @param string $sources Path to source files to be archived
     * @param string[] $excludes Composer's own exclude rules from composer.json
     * @param bool $ignoreFilters Ignore filters when looking for files
     */
    public function __construct($sources, array $excludes, $ignoreFilters = false)
    {
        $fs = new Filesystem();

$sources = $fs->normalizePath(realpath($sources));

if ($ignoreFilters) {
            $filters = array();
        } else {
            $filters = array(
                new GitExcludeFilter($sources),
                new ComposerExcludeFilter($sources, $excludes),
            );
        }

$this->finder = new Finder();

$filter = function (\SplFileInfo $file) use ($sources, $filters, $fs) {
            if ($file->isLink() && strpos($file->getRealPath(), $sources) !== 0) {
                return false;
            }

$relativePath = Preg::replace(
                '#^'.preg_quote($sources, '#').'#',
                '',
                $fs->normalizePath($file->getRealPath())
            );

$exclude = false;
            foreach ($filters as $filter) {
                $exclude = $filter->filter($relativePath, $exclude);
            }

return !$exclude;
        };

if (method_exists($filter, 'bindTo')) {
            $filter = $filter->bindTo(null);
        }

$this->finder
            ->in($sources)
            ->filter($filter)
            ->ignoreVCS(true)
            ->ignoreDotFiles(false)
            ->sortByName();

parent::__construct($this->finder->getIterator());
    }

#[\ReturnTypeWillChange]
    public function accept()
    {
        /** @var SplFileInfo $current */
        $current = $this->getInnerIterator()->current();

if (!$current->isDir()) {
            return true;
        }

$iterator = new FilesystemIterator($current, FilesystemIterator::SKIP_DOTS);

return !$iterator->valid();
    }
}
<?php

namespace Composer\Package\Archiver;

use Composer\Pcre\Preg;
use Symfony\Component\Finder;

/**
 * @author Nils Adermann <naderman@naderman.de>
 */
abstract class BaseExcludeFilter
{
    /**
     * @var string
     */
    protected $sourcePath;

/**
     * @var array<array{0: string, 1: bool, 2: bool}> array of [$pattern, $negate, $stripLeadingSlash] arrays
     */
    protected $excludePatterns;

/**
     * @param string $sourcePath Directory containing sources to be filtered
     */
    public function __construct($sourcePath)
    {
        $this->sourcePath = $sourcePath;
        $this->excludePatterns = array();
    }

/**
     * Checks the given path against all exclude patterns in this filter
     *
     * Negated patterns overwrite exclude decisions of previous filters.
     *
     * @param string $relativePath The file's path relative to the sourcePath
     * @param bool $exclude Whether a previous filter wants to exclude this file
     *
     * @return bool Whether the file should be excluded
     */
    public function filter($relativePath, $exclude)
    {
        foreach ($this->excludePatterns as $patternData) {
            list($pattern, $negate, $stripLeadingSlash) = $patternData;

if ($stripLeadingSlash) {
                $path = substr($relativePath, 1);
            } else {
                $path = $relativePath;
            }

try {
                if (Preg::isMatch($pattern, $path)) {
                    $exclude = !$negate;
                }
            } catch (\RuntimeException $e) {
                // suppressed
            }
        }

return $exclude;
    }

/**
     * Processes a file containing exclude rules of different formats per line
     *
     * @param string[] $lines A set of lines to be parsed
     * @param callable $lineParser The parser to be used on each line
     *
     * @return array<array{0: string, 1: bool, 2: bool}> Exclude patterns to be used in filter()
     */
    protected function parseLines(array $lines, $lineParser)
    {
        return array_filter(
            array_map(
                function ($line) use ($lineParser) {
                    $line = trim($line);

if (!$line || 0 === strpos($line, '#')) {
                        return null;
                    }

return call_user_func($lineParser, $line);
                },
                $lines
            ),
            function ($pattern) {
                return $pattern !== null;
            }
        );
    }

/**
     * Generates a set of exclude patterns for filter() from gitignore rules
     *
     * @param string[] $rules A list of exclude rules in gitignore syntax
     *
     * @return array<int, array{0: string, 1: bool, 2: bool}> Exclude patterns
     */
    protected function generatePatterns($rules)
    {
        $patterns = array();
        foreach ($rules as $rule) {
            $patterns[] = $this->generatePattern($rule);
        }

return $patterns;
    }

/**
     * Generates an exclude pattern for filter() from a gitignore rule
     *
     * @param string $rule An exclude rule in gitignore syntax
     *
     * @return array{0: string, 1: bool, 2: bool} An exclude pattern
     */
    protected function generatePattern($rule)
    {
        $negate = false;
        $pattern = '';

if ($rule !== '' && $rule[0] === '!') {
            $negate = true;
            $rule = ltrim($rule, '!');
        }

$firstSlashPosition = strpos($rule, '/');
        if (0 === $firstSlashPosition) {
            $pattern = '^/';
        } elseif (false === $firstSlashPosition || strlen($rule) - 1 === $firstSlashPosition) {
            $pattern = '/';
        }

$rule = trim($rule, '/');

// remove delimiters as well as caret (^) and dollar sign ($) from the regex
        $rule = substr(Finder\Glob::toRegex($rule), 2, -2);

return array('{'.$pattern.$rule.'(?=$|/)}', $negate, false);
    }
}
<?php

namespace Composer\Package\Archiver;

use ZipArchive;
use Composer\Util\Filesystem;

/**
 * @author Jan Prieser <jan@prieser.net>
 */
class ZipArchiver implements ArchiverInterface
{
    /** @var array<string, bool> */
    protected static $formats = array(
        'zip' => true,
    );

/**
     * @inheritDoc
     */
    public function archive($sources, $target, $format, array $excludes = array(), $ignoreFilters = false)
    {
        $fs = new Filesystem();
        $sources = $fs->normalizePath($sources);

$zip = new ZipArchive();
        $res = $zip->open($target, ZipArchive::CREATE);
        if ($res === true) {
            $files = new ArchivableFilesFinder($sources, $excludes, $ignoreFilters);
            foreach ($files as $file) {
                /** @var \SplFileInfo $file */
                $filepath = strtr($file->getPath()."/".$file->getFilename(), '\\', '/');
                $localname = $filepath;
                if (strpos($localname, $sources . '/') === 0) {
                    $localname = substr($localname, strlen($sources . '/'));
                }
                if ($file->isDir()) {
                    $zip->addEmptyDir($localname);
                } else {
                    $zip->addFile($filepath, $localname);
                }

/**
                 * ZipArchive::setExternalAttributesName is available from >= PHP 5.6
                 * setExternalAttributesName() is only available with libzip 0.11.2 or above
                 */
                if (PHP_VERSION_ID >= 50600 && method_exists($zip, 'setExternalAttributesName')) {
                    $perms = fileperms($filepath);

/**
                     * Ensure to preserve the permission umasks for the filepath in the archive.
                     */
                    $zip->setExternalAttributesName($localname, ZipArchive::OPSYS_UNIX, $perms << 16);
                }
            }
            if ($zip->close()) {
                return $target;
            }
        }
        $message = sprintf(
            "Could not create archive '%s' from '%s': %s",
            $target,
            $sources,
            $zip->getStatusString()
        );
        throw new \RuntimeException($message);
    }

/**
     * @inheritDoc
     */
    public function supports($format, $sourceType)
    {
        return isset(static::$formats[$format]) && $this->compressionAvailable();
    }

/**
     * @return bool
     */
    private function compressionAvailable()
    {
        return class_exists('ZipArchive');
    }
}
<?php

namespace Composer\Package\Archiver;

/**
 * @author Till Klampaeckel <till@php.net>
 * @author Matthieu Moquet <matthieu@moquet.net>
 * @author Nils Adermann <naderman@naderman.de>
 */
interface ArchiverInterface
{
    /**
     * Create an archive from the sources.
     *
     * @param string   $sources       The sources directory
     * @param string   $target        The target file
     * @param string   $format        The format used for archive
     * @param string[] $excludes      A list of patterns for files to exclude
     * @param bool     $ignoreFilters Whether to ignore filters when looking for files
     *
     * @return string The path to the written archive file
     */
    public function archive($sources, $target, $format, array $excludes = array(), $ignoreFilters = false);

/**
     * Format supported by the archiver.
     *
     * @param string $format     The archive format
     * @param string $sourceType The source type (git, svn, hg, etc.)
     *
     * @return bool true if the format is supported by the archiver
     */
    public function supports($format, $sourceType);
}
<?php

namespace Composer\Package\Archiver;

use Composer\Downloader\DownloadManager;
use Composer\Package\RootPackageInterface;
use Composer\Pcre\Preg;
use Composer\Util\Filesystem;
use Composer\Util\Loop;
use Composer\Util\SyncHelper;
use Composer\Json\JsonFile;
use Composer\Package\CompletePackageInterface;

/**
 * @author Matthieu Moquet <matthieu@moquet.net>
 * @author Till Klampaeckel <till@php.net>
 */
class ArchiveManager
{
    /** @var DownloadManager */
    protected $downloadManager;
    /** @var Loop */
    protected $loop;

/**
     * @var ArchiverInterface[]
     */
    protected $archivers = array();

/**
     * @var bool
     */
    protected $overwriteFiles = true;

/**
     * @param DownloadManager $downloadManager A manager used to download package sources
     */
    public function __construct(DownloadManager $downloadManager, Loop $loop)
    {
        $this->downloadManager = $downloadManager;
        $this->loop = $loop;
    }

/**
     * @param ArchiverInterface $archiver
     *
     * @return void
     */
    public function addArchiver(ArchiverInterface $archiver)
    {
        $this->archivers[] = $archiver;
    }

/**
     * Set whether existing archives should be overwritten
     *
     * @param bool $overwriteFiles New setting
     *
     * @return $this
     */
    public function setOverwriteFiles($overwriteFiles)
    {
        $this->overwriteFiles = $overwriteFiles;

return $this;
    }

/**
     * Generate a distinct filename for a particular version of a package.
     *
     * @param CompletePackageInterface $package The package to get a name for
     *
     * @return string A filename without an extension
     */
    public function getPackageFilename(CompletePackageInterface $package)
    {
        if ($package->getArchiveName()) {
            $baseName = $package->getArchiveName();
        } else {
            $baseName = Preg::replace('#[^a-z0-9-_]#i', '-', $package->getName());
        }
        $nameParts = array($baseName);

if (null !== $package->getDistReference() && Preg::isMatch('{^[a-f0-9]{40}$}', $package->getDistReference())) {
            array_push($nameParts, $package->getDistReference(), $package->getDistType());
        } else {
            array_push($nameParts, $package->getPrettyVersion(), $package->getDistReference());
        }

if ($package->getSourceReference()) {
            $nameParts[] = substr(sha1($package->getSourceReference()), 0, 6);
        }

$name = implode('-', array_filter($nameParts, function ($p) {
            return !empty($p);
        }));

return str_replace('/', '-', $name);
    }

/**
     * Create an archive of the specified package.
     *
     * @param  CompletePackageInterface  $package       The package to archive
     * @param  string                    $format        The format of the archive (zip, tar, ...)
     * @param  string                    $targetDir     The directory where to build the archive
     * @param  string|null               $fileName      The relative file name to use for the archive, or null to generate
     *                                                  the package name. Note that the format will be appended to this name
     * @param  bool                      $ignoreFilters Ignore filters when looking for files in the package
     * @throws \InvalidArgumentException
     * @throws \RuntimeException
     * @return string                    The path of the created archive
     */
    public function archive(CompletePackageInterface $package, $format, $targetDir, $fileName = null, $ignoreFilters = false)
    {
        if (empty($format)) {
            throw new \InvalidArgumentException('Format must be specified');
        }

// Search for the most appropriate archiver
        $usableArchiver = null;
        foreach ($this->archivers as $archiver) {
            if ($archiver->supports($format, $package->getSourceType())) {
                $usableArchiver = $archiver;
                break;
            }
        }

// Checks the format/source type are supported before downloading the package
        if (null === $usableArchiver) {
            throw new \RuntimeException(sprintf('No archiver found to support %s format', $format));
        }

$filesystem = new Filesystem();

if ($package instanceof RootPackageInterface) {
            $sourcePath = realpath('.');
        } else {
            // Directory used to download the sources
            $sourcePath = sys_get_temp_dir().'/composer_archive'.uniqid();
            $filesystem->ensureDirectoryExists($sourcePath);

try {
                // Download sources
                $promise = $this->downloadManager->download($package, $sourcePath);
                SyncHelper::await($this->loop, $promise);
                $promise = $this->downloadManager->install($package, $sourcePath);
                SyncHelper::await($this->loop, $promise);
            } catch (\Exception $e) {
                $filesystem->removeDirectory($sourcePath);
                throw  $e;
            }

// Check exclude from downloaded composer.json
            if (file_exists($composerJsonPath = $sourcePath.'/composer.json')) {
                $jsonFile = new JsonFile($composerJsonPath);
                $jsonData = $jsonFile->read();
                if (!empty($jsonData['archive']['name'])) {
                    $package->setArchiveName($jsonData['archive']['name']);
                }
                if (!empty($jsonData['archive']['exclude'])) {
                    $package->setArchiveExcludes($jsonData['archive']['exclude']);
                }
            }
        }

if (null === $fileName) {
            $packageName = $this->getPackageFilename($package);
        } else {
            $packageName = $fileName;
        }

// Archive filename
        $filesystem->ensureDirectoryExists($targetDir);
        $target = realpath($targetDir).'/'.$packageName.'.'.$format;
        $filesystem->ensureDirectoryExists(dirname($target));

if (!$this->overwriteFiles && file_exists($target)) {
            return $target;
        }

// Create the archive
        $tempTarget = sys_get_temp_dir().'/composer_archive'.uniqid().'.'.$format;
        $filesystem->ensureDirectoryExists(dirname($tempTarget));

$archivePath = $usableArchiver->archive($sourcePath, $tempTarget, $format, $package->getArchiveExcludes(), $ignoreFilters);
        $filesystem->rename($archivePath, $target);

// cleanup temporary download
        if (!$package instanceof RootPackageInterface) {
            $filesystem->removeDirectory($sourcePath);
        }
        $filesystem->remove($tempTarget);

return $target;
    }
}
<?php

namespace Composer\Package\Archiver;

/**
 * An exclude filter which processes composer's own exclude rules
 *
 * @author Nils Adermann <naderman@naderman.de>
 */
class ComposerExcludeFilter extends BaseExcludeFilter
{
    /**
     * @param string $sourcePath Directory containing sources to be filtered
     * @param string[] $excludeRules An array of exclude rules from composer.json
     */
    public function __construct($sourcePath, array $excludeRules)
    {
        parent::__construct($sourcePath);
        $this->excludePatterns = $this->generatePatterns($excludeRules);
    }
}
<?php

namespace Composer\Package\Archiver;

use FilterIterator;
use PharData;

class ArchivableFilesFilter extends FilterIterator
{
    /** @var string[] */
    private $dirs = array();

/**
     * @return bool true if the current element is acceptable, otherwise false.
     */
    #[\ReturnTypeWillChange]
    public function accept()
    {
        $file = $this->getInnerIterator()->current();
        if ($file->isDir()) {
            $this->dirs[] = (string) $file;

return false;
        }

return true;
    }

/**
     * @param string $sources
     *
     * @return void
     */
    public function addEmptyDir(PharData $phar, $sources)
    {
        foreach ($this->dirs as $filepath) {
            $localname = str_replace($sources . "/", '', $filepath);
            $phar->addEmptyDir($localname);
        }
    }
}
<?php

namespace Composer\Package\Archiver;

use Composer\Pcre\Preg;

/**
 * An exclude filter that processes gitattributes
 *
 * It respects export-ignore git attributes
 *
 * @author Nils Adermann <naderman@naderman.de>
 */
class GitExcludeFilter extends BaseExcludeFilter
{
    /**
     * Parses .gitattributes if it exists
     *
     * @param string $sourcePath
     */
    public function __construct($sourcePath)
    {
        parent::__construct($sourcePath);

if (file_exists($sourcePath.'/.gitattributes')) {
            $this->excludePatterns = array_merge(
                $this->excludePatterns,
                $this->parseLines(
                    file($sourcePath.'/.gitattributes'),
                    array($this, 'parseGitAttributesLine')
                )
            );
        }
    }

/**
     * Callback parser which finds export-ignore rules in git attribute lines
     *
     * @param string $line A line from .gitattributes
     *
     * @return array{0: string, 1: bool, 2: bool}|null An exclude pattern for filter()
     */
    public function parseGitAttributesLine($line)
    {
        $parts = Preg::split('#\s+#', $line);

if (count($parts) == 2 && $parts[1] === 'export-ignore') {
            return $this->generatePattern($parts[0]);
        }

if (count($parts) == 2 && $parts[1] === '-export-ignore') {
            return $this->generatePattern('!'.$parts[0]);
        }

return null;
    }
}
<?php

namespace Composer\Package;

/**
 * Defines package metadata that is not necessarily needed for solving and installing packages
 *
 * @author Nils Adermann <naderman@naderman.de>
 */
interface CompletePackageInterface extends PackageInterface
{
    /**
     * Returns the scripts of this package
     *
     * @return array<string, string[]> Map of script name to array of handlers
     */
    public function getScripts();

/**
     * @param  array<string, string[]> $scripts
     * @return void
     */
    public function setScripts(array $scripts);

/**
     * Returns an array of repositories
     *
     * @return mixed[] Repositories
     */
    public function getRepositories();

/**
     * Set the repositories
     *
     * @param  mixed[] $repositories
     * @return void
     */
    public function setRepositories(array $repositories);

/**
     * Returns the package license, e.g. MIT, BSD, GPL
     *
     * @return string[] The package licenses
     */
    public function getLicense();

/**
     * Set the license
     *
     * @param  string[] $license
     * @return void
     */
    public function setLicense(array $license);

/**
     * Returns an array of keywords relating to the package
     *
     * @return string[]
     */
    public function getKeywords();

/**
     * Set the keywords
     *
     * @param  string[] $keywords
     * @return void
     */
    public function setKeywords(array $keywords);

/**
     * Returns the package description
     *
     * @return ?string
     */
    public function getDescription();

/**
     * Set the description
     *
     * @param  string $description
     * @return void
     */
    public function setDescription($description);

/**
     * Returns the package homepage
     *
     * @return ?string
     */
    public function getHomepage();

/**
     * Set the homepage
     *
     * @param  string $homepage
     * @return void
     */
    public function setHomepage($homepage);

/**
     * Returns an array of authors of the package
     *
     * Each item can contain name/homepage/email keys
     *
     * @return array<array{name?: string, homepage?: string, email?: string, role?: string}>
     */
    public function getAuthors();

/**
     * Set the authors
     *
     * @param  array<array{name?: string, homepage?: string, email?: string, role?: string}> $authors
     * @return void
     */
    public function setAuthors(array $authors);

/**
     * Returns the support information
     *
     * @return array{issues?: string, forum?: string, wiki?: string, source?: string, email?: string, irc?: string, docs?: string, rss?: string, chat?: string}
     */
    public function getSupport();

/**
     * Set the support information
     *
     * @param  array{issues?: string, forum?: string, wiki?: string, source?: string, email?: string, irc?: string, docs?: string, rss?: string, chat?: string} $support
     * @return void
     */
    public function setSupport(array $support);

/**
     * Returns an array of funding options for the package
     *
     * Each item will contain type and url keys
     *
     * @return array<array{type?: string, url?: string}>
     */
    public function getFunding();

/**
     * Set the funding
     *
     * @param  array<array{type?: string, url?: string}> $funding
     * @return void
     */
    public function setFunding(array $funding);

/**
     * Returns if the package is abandoned or not
     *
     * @return bool
     */
    public function isAbandoned();

/**
     * If the package is abandoned and has a suggested replacement, this method returns it
     *
     * @return string|null
     */
    public function getReplacementPackage();

/**
     * @param  bool|string $abandoned
     * @return void
     */
    public function setAbandoned($abandoned);

/**
     * Returns default base filename for archive
     *
     * @return ?string
     */
    public function getArchiveName();

/**
     * Sets default base filename for archive
     *
     * @param  string $name
     * @return void
     */
    public function setArchiveName($name);

/**
     * Returns a list of patterns to exclude from package archives
     *
     * @return string[]
     */
    public function getArchiveExcludes();

/**
     * Sets a list of patterns to be excluded from archives
     *
     * @param  string[] $excludes
     * @return void
     */
    public function setArchiveExcludes(array $excludes);
}
<?php

namespace Composer\Package;

use Composer\Semver\Constraint\ConstraintInterface;

/**
 * Represents a link between two packages, represented by their names
 *
 * @author Nils Adermann <naderman@naderman.de>
 */
class Link
{
    const TYPE_REQUIRE = 'requires';
    const TYPE_DEV_REQUIRE = 'devRequires';
    const TYPE_PROVIDE = 'provides';
    const TYPE_CONFLICT = 'conflicts';
    const TYPE_REPLACE = 'replaces';

/**
     * Special type
     * @internal
     */
    const TYPE_DOES_NOT_REQUIRE = 'does not require';
    /**
     * TODO should be marked private once 5.3 is dropped
     * @private
     */
    const TYPE_UNKNOWN = 'relates to';

/**
     * Will be converted into a constant once the min PHP version allows this
     *
     * @internal
     * @var string[]
     * @phpstan-var array<self::TYPE_REQUIRE|self::TYPE_DEV_REQUIRE|self::TYPE_PROVIDE|self::TYPE_CONFLICT|self::TYPE_REPLACE>
     */
    public static $TYPES = array(
        self::TYPE_REQUIRE,
        self::TYPE_DEV_REQUIRE,
        self::TYPE_PROVIDE,
        self::TYPE_CONFLICT,
        self::TYPE_REPLACE,
    );

/**
     * @var string
     */
    protected $source;

/**
     * @var string
     */
    protected $target;

/**
     * @var ConstraintInterface
     */
    protected $constraint;

/**
     * @var string
     * @phpstan-var string $description
     */
    protected $description;

/**
     * @var ?string
     */
    protected $prettyConstraint;

/**
     * Creates a new package link.
     *
     * @param string              $source
     * @param string              $target
     * @param ConstraintInterface $constraint       Constraint applying to the target of this link
     * @param self::TYPE_*        $description      Used to create a descriptive string representation
     * @param string|null         $prettyConstraint
     */
    public function __construct(
        $source,
        $target,
        ConstraintInterface $constraint,
        $description = self::TYPE_UNKNOWN,
        $prettyConstraint = null
    ) {
        $this->source = strtolower($source);
        $this->target = strtolower($target);
        $this->constraint = $constraint;
        $this->description = self::TYPE_DEV_REQUIRE === $description ? 'requires (for development)' : $description;
        $this->prettyConstraint = $prettyConstraint;
    }

/**
     * @return string
     */
    public function getDescription()
    {
        return $this->description;
    }

/**
     * @return string
     */
    public function getSource()
    {
        return $this->source;
    }

/**
     * @return string
     */
    public function getTarget()
    {
        return $this->target;
    }

/**
     * @return ConstraintInterface
     */
    public function getConstraint()
    {
        return $this->constraint;
    }

/**
     * @throws \UnexpectedValueException If no pretty constraint was provided
     * @return string
     */
    public function getPrettyConstraint()
    {
        if (null === $this->prettyConstraint) {
            throw new \UnexpectedValueException(sprintf('Link %s has been misconfigured and had no prettyConstraint given.', $this));
        }

return $this->prettyConstraint;
    }

/**
     * @return string
     */
    public function __toString()
    {
        return $this->source.' '.$this->description.' '.$this->target.' ('.$this->constraint.')';
    }

/**
     * @param  PackageInterface $sourcePackage
     * @return string
     */
    public function getPrettyString(PackageInterface $sourcePackage)
    {
        return $sourcePackage->getPrettyString().' '.$this->description.' '.$this->target.' '.$this->constraint->getPrettyString();
    }
}
<?php

namespace Composer\Package\Version;

use Composer\Pcre\Preg;
use Composer\Repository\PlatformRepository;
use Composer\Semver\VersionParser as SemverVersionParser;
use Composer\Semver\Semver;
use Composer\Semver\Constraint\ConstraintInterface;

class VersionParser extends SemverVersionParser
{
    const DEFAULT_BRANCH_ALIAS = '9999999-dev';

/** @var array<string, ConstraintInterface> Constraint parsing cache */
    private static $constraints = array();

/**
     * @inheritDoc
     */
    public function parseConstraints($constraints)
    {
        if (!isset(self::$constraints[$constraints])) {
            self::$constraints[$constraints] = parent::parseConstraints($constraints);
        }

return self::$constraints[$constraints];
    }

/**
     * Parses an array of strings representing package/version pairs.
     *
     * The parsing results in an array of arrays, each of which
     * contain a 'name' key with value and optionally a 'version' key with value.
     *
     * @param string[] $pairs a set of package/version pairs separated by ":", "=" or " "
     *
     * @return list<array{name: string, version?: string}>
     */
    public function parseNameVersionPairs(array $pairs)
    {
        $pairs = array_values($pairs);
        $result = array();

for ($i = 0, $count = count($pairs); $i < $count; $i++) {
            $pair = Preg::replace('{^([^=: ]+)[=: ](.*)$}', '$1 $2', trim($pairs[$i]));
            if (false === strpos($pair, ' ') && isset($pairs[$i + 1]) && false === strpos($pairs[$i + 1], '/') && !Preg::isMatch('{(?<=[a-z0-9_/-])\*|\*(?=[a-z0-9_/-])}i', $pairs[$i + 1]) && !PlatformRepository::isPlatformPackage($pairs[$i + 1])) {
                $pair .= ' '.$pairs[$i + 1];
                $i++;
            }

if (strpos($pair, ' ')) {
                list($name, $version) = explode(' ', $pair, 2);
                $result[] = array('name' => $name, 'version' => $version);
            } else {
                $result[] = array('name' => $pair);
            }
        }

return $result;
    }

/**
     * @param string $normalizedFrom
     * @param string $normalizedTo
     *
     * @return bool
     */
    public static function isUpgrade($normalizedFrom, $normalizedTo)
    {
        if ($normalizedFrom === $normalizedTo) {
            return true;
        }

if (in_array($normalizedFrom, array('dev-master', 'dev-trunk', 'dev-default'), true)) {
            $normalizedFrom = VersionParser::DEFAULT_BRANCH_ALIAS;
        }
        if (in_array($normalizedTo, array('dev-master', 'dev-trunk', 'dev-default'), true)) {
            $normalizedTo = VersionParser::DEFAULT_BRANCH_ALIAS;
        }

if (strpos($normalizedFrom, 'dev-') === 0 || strpos($normalizedTo, 'dev-') === 0) {
            return true;
        }

$sorted = Semver::sort(array($normalizedTo, $normalizedFrom));

return $sorted[0] === $normalizedFrom;
    }
}
<?php

namespace Composer\Package\Version;

use Composer\Config;
use Composer\Pcre\Preg;
use Composer\Repository\Vcs\HgDriver;
use Composer\IO\NullIO;
use Composer\Semver\VersionParser as SemverVersionParser;
use Composer\Util\Git as GitUtil;
use Composer\Util\HttpDownloader;
use Composer\Util\ProcessExecutor;
use Composer\Util\Svn as SvnUtil;

/**
 * Try to guess the current version number based on different VCS configuration.
 *
 * @author Jordi Boggiano <j.boggiano@seld.be>
 * @author Samuel Roze <samuel.roze@gmail.com>
 *
 * @phpstan-type Version array{version: string, commit: string|null, pretty_version: string|null, feature_version?: string|null, feature_pretty_version?: string|null}
 */
class VersionGuesser
{
    /**
     * @var Config
     */
    private $config;

/**
     * @var ProcessExecutor
     */
    private $process;

/**
     * @var SemverVersionParser
     */
    private $versionParser;

/**
     * @param Config              $config
     * @param ProcessExecutor     $process
     * @param SemverVersionParser $versionParser
     */
    public function __construct(Config $config, ProcessExecutor $process, SemverVersionParser $versionParser)
    {
        $this->config = $config;
        $this->process = $process;
        $this->versionParser = $versionParser;
    }

/**
     * @param array<string, mixed> $packageConfig
     * @param string               $path Path to guess into
     *
     * @return array|null
     * @phpstan-return Version|null
     */
    public function guessVersion(array $packageConfig, $path)
    {
        if (!function_exists('proc_open')) {
            return null;
        }

$versionData = $this->guessGitVersion($packageConfig, $path);
        if (null !== $versionData && null !== $versionData['version']) {
            return $this->postprocess($versionData);
        }

$versionData = $this->guessHgVersion($packageConfig, $path);
        if (null !== $versionData && null !== $versionData['version']) {
            return $this->postprocess($versionData);
        }

$versionData = $this->guessFossilVersion($path);
        if (null !== $versionData && null !== $versionData['version']) {
            return $this->postprocess($versionData);
        }

$versionData = $this->guessSvnVersion($packageConfig, $path);
        if (null !== $versionData && null !== $versionData['version']) {
            return $this->postprocess($versionData);
        }

return null;
    }

/**
     * @param array $versionData
     *
     * @phpstan-param Version $versionData
     *
     * @return array
     * @phpstan-return Version
     */
    private function postprocess(array $versionData)
    {
        if (!empty($versionData['feature_version']) && $versionData['feature_version'] === $versionData['version'] && $versionData['feature_pretty_version'] === $versionData['pretty_version']) {
            unset($versionData['feature_version'], $versionData['feature_pretty_version']);
        }

if ('-dev' === substr($versionData['version'], -4) && Preg::isMatch('{\.9{7}}', $versionData['version'])) {
            $versionData['pretty_version'] = Preg::replace('{(\.9{7})+}', '.x', $versionData['version']);
        }

if (!empty($versionData['feature_version']) && '-dev' === substr($versionData['feature_version'], -4) && Preg::isMatch('{\.9{7}}', $versionData['feature_version'])) {
            $versionData['feature_pretty_version'] = Preg::replace('{(\.9{7})+}', '.x', $versionData['feature_version']);
        }

return $versionData;
    }

/**
     * @param array<string, mixed> $packageConfig
     * @param string               $path
     *
     * @return array{version: string|null, commit: string|null, pretty_version: string|null, feature_version?: string|null, feature_pretty_version?: string|null}
     */
    private function guessGitVersion(array $packageConfig, $path)
    {
        GitUtil::cleanEnv();
        $commit = null;
        $version = null;
        $prettyVersion = null;
        $featureVersion = null;
        $featurePrettyVersion = null;
        $isDetached = false;

// try to fetch current version from git branch
        if (0 === $this->process->execute('git branch -a --no-color --no-abbrev -v', $output, $path)) {
            $branches = array();
            $isFeatureBranch = false;

// find current branch and collect all branch names
            foreach ($this->process->splitLines($output) as $branch) {
                if ($branch && Preg::isMatch('{^(?:\* ) *($no branch$|$detached from \S+$|$HEAD detached at \S+$|\S+) *([a-f0-9]+) .*$}', $branch, $match)) {
                    if (
                        $match[1] === '(no branch)'
                        || strpos($match[1], '(detached ') === 0
                        || strpos($match[1], '(HEAD detached at') === 0
                    ) {
                        $version = 'dev-' . $match[2];
                        $prettyVersion = $version;
                        $isFeatureBranch = true;
                        $isDetached = true;
                    } else {
                        $version = $this->versionParser->normalizeBranch($match[1]);
                        $prettyVersion = 'dev-' . $match[1];
                        $isFeatureBranch = $this->isFeatureBranch($packageConfig, $match[1]);
                    }

if ($match[2]) {
                        $commit = $match[2];
                    }
                }

if ($branch && !Preg::isMatch('{^ *.+/HEAD }', $branch)) {
                    if (Preg::isMatch('{^(?:\* )? *((?:remotes/(?:origin|upstream)/)?[^\s/]+) *([a-f0-9]+) .*$}', $branch, $match)) {
                        $branches[] = $match[1];
                    }
                }
            }

if ($isFeatureBranch) {
                $featureVersion = $version;
                $featurePrettyVersion = $prettyVersion;

// try to find the best (nearest) version branch to assume this feature's version
                $result = $this->guessFeatureVersion($packageConfig, $version, $branches, 'git rev-list %candidate%..%branch%', $path);
                $version = $result['version'];
                $prettyVersion = $result['pretty_version'];
            }
        }

if (!$version || $isDetached) {
            $result = $this->versionFromGitTags($path);
            if ($result) {
                $version = $result['version'];
                $prettyVersion = $result['pretty_version'];
                $featureVersion = null;
                $featurePrettyVersion = null;
            }
        }

if (!$commit) {
            $command = 'git log --pretty="%H" -n1 HEAD'.GitUtil::getNoShowSignatureFlag($this->process);
            if (0 === $this->process->execute($command, $output, $path)) {
                $commit = trim($output) ?: null;
            }
        }

if ($featureVersion) {
            return array('version' => $version, 'commit' => $commit, 'pretty_version' => $prettyVersion, 'feature_version' => $featureVersion, 'feature_pretty_version' => $featurePrettyVersion);
        }

return array('version' => $version, 'commit' => $commit, 'pretty_version' => $prettyVersion);
    }

/**
     * @param string $path
     *
     * @return array{version: string, pretty_version: string}|null
     */
    private function versionFromGitTags($path)
    {
        // try to fetch current version from git tags
        if (0 === $this->process->execute('git describe --exact-match --tags', $output, $path)) {
            try {
                $version = $this->versionParser->normalize(trim($output));

return array('version' => $version, 'pretty_version' => trim($output));
            } catch (\Exception $e) {
            }
        }

return null;
    }

/**
     * @param array<string, mixed> $packageConfig
     * @param string               $path
     *
     * @return array{version: string|null, commit: ''|null, pretty_version: string|null, feature_version?: string|null, feature_pretty_version?: string|null}|null
     */
    private function guessHgVersion(array $packageConfig, $path)
    {
        // try to fetch current version from hg branch
        if (0 === $this->process->execute('hg branch', $output, $path)) {
            $branch = trim($output);
            $version = $this->versionParser->normalizeBranch($branch);
            $isFeatureBranch = 0 === strpos($version, 'dev-');

if (VersionParser::DEFAULT_BRANCH_ALIAS === $version) {
                return array('version' => $version, 'commit' => null, 'pretty_version' => 'dev-'.$branch);
            }

if (!$isFeatureBranch) {
                return array('version' => $version, 'commit' => null, 'pretty_version' => $version);
            }

// re-use the HgDriver to fetch branches (this properly includes bookmarks)
            $io = new NullIO();
            $driver = new HgDriver(array('url' => $path), $io, $this->config, new HttpDownloader($io, $this->config), $this->process);
            $branches = array_map('strval', array_keys($driver->getBranches()));

// try to find the best (nearest) version branch to assume this feature's version
            $result = $this->guessFeatureVersion($packageConfig, $version, $branches, 'hg log -r "not ancestors(\'%candidate%\') and ancestors(\'%branch%\')" --template "{node}\\n"', $path);
            $result['commit'] = '';
            $result['feature_version'] = $version;
            $result['feature_pretty_version'] = $version;

return $result;
        }

return null;
    }

/**
     * @param array<string, mixed>     $packageConfig
     * @param string|null              $version
     * @param string[]                 $branches
     * @param string                   $scmCmdline
     * @param string                   $path
     *
     * @phpstan-param non-empty-string $scmCmdline
     *
     * @return array{version: string|null, pretty_version: string|null}
     */
    private function guessFeatureVersion(array $packageConfig, $version, array $branches, $scmCmdline, $path)
    {
        $prettyVersion = $version;

// ignore feature branches if they have no branch-alias or self.version is used
        // and find the branch they came from to use as a version instead
        if (!isset($packageConfig['extra']['branch-alias'][$version])
            || strpos(json_encode($packageConfig), '"self.version"')
        ) {
            $branch = Preg::replace('{^dev-}', '', $version);
            $length = PHP_INT_MAX;

// return directly, if branch is configured to be non-feature branch
            if (!$this->isFeatureBranch($packageConfig, $branch)) {
                return array('version' => $version, 'pretty_version' => $prettyVersion);
            }

// sort local branches first then remote ones
            // and sort numeric branches below named ones, to make sure if the branch has the same distance from main and 1.10 and 1.9 for example, main is picked
            // and sort using natural sort so that 1.10 will appear before 1.9
            usort($branches, function ($a, $b) {
                $aRemote = 0 === strpos($a, 'remotes/');
                $bRemote = 0 === strpos($b, 'remotes/');

if ($aRemote !== $bRemote) {
                    return $aRemote ? 1 : -1;
                }

return strnatcasecmp($b, $a);
            });

foreach ($branches as $candidate) {
                $candidateVersion = Preg::replace('{^remotes/\S+/}', '', $candidate);

// do not compare against itself or other feature branches
                if ($candidate === $branch || $this->isFeatureBranch($packageConfig, $candidateVersion)) {
                    continue;
                }

$cmdLine = str_replace(array('%candidate%', '%branch%'), array($candidate, $branch), $scmCmdline);
                if (0 !== $this->process->execute($cmdLine, $output, $path)) {
                    continue;
                }

if (strlen($output) < $length) {
                    $length = strlen($output);
                    $version = $this->versionParser->normalizeBranch($candidateVersion);
                    $prettyVersion = 'dev-' . $candidateVersion;
                    if ($length === 0) {
                        break;
                    }
                }
            }
        }

return array('version' => $version, 'pretty_version' => $prettyVersion);
    }

/**
     * @param array<string, mixed> $packageConfig
     * @param string|null          $branchName
     *
     * @return bool
     */
    private function isFeatureBranch(array $packageConfig, $branchName)
    {
        $nonFeatureBranches = '';
        if (!empty($packageConfig['non-feature-branches'])) {
            $nonFeatureBranches = implode('|', $packageConfig['non-feature-branches']);
        }

return !Preg::isMatch('{^(' . $nonFeatureBranches . '|master|main|latest|next|current|support|tip|trunk|default|develop|\d+\..+)$}', $branchName, $match);
    }

/**
     * @param string $path
     *
     * @return array{version: string|null, commit: '', pretty_version: string|null}
     */
    private function guessFossilVersion($path)
    {
        $version = null;
        $prettyVersion = null;

// try to fetch current version from fossil
        if (0 === $this->process->execute('fossil branch list', $output, $path)) {
            $branch = trim($output);
            $version = $this->versionParser->normalizeBranch($branch);
            $prettyVersion = 'dev-' . $branch;
        }

// try to fetch current version from fossil tags
        if (0 === $this->process->execute('fossil tag list', $output, $path)) {
            try {
                $version = $this->versionParser->normalize(trim($output));
                $prettyVersion = trim($output);
            } catch (\Exception $e) {
            }
        }

return array('version' => $version, 'commit' => '', 'pretty_version' => $prettyVersion);
    }

/**
     * @param array<string, mixed> $packageConfig
     * @param string               $path
     *
     * @return array{version: string, commit: '', pretty_version: string}|null
     */
    private function guessSvnVersion(array $packageConfig, $path)
    {
        SvnUtil::cleanEnv();

// try to fetch current version from svn
        if (0 === $this->process->execute('svn info --xml', $output, $path)) {
            $trunkPath = isset($packageConfig['trunk-path']) ? preg_quote($packageConfig['trunk-path'], '#') : 'trunk';
            $branchesPath = isset($packageConfig['branches-path']) ? preg_quote($packageConfig['branches-path'], '#') : 'branches';
            $tagsPath = isset($packageConfig['tags-path']) ? preg_quote($packageConfig['tags-path'], '#') : 'tags';

$urlPattern = '#<url>.*/(' . $trunkPath . '|(' . $branchesPath . '|' . $tagsPath . ')/(.*))</url>#';

if (Preg::isMatch($urlPattern, $output, $matches)) {
                if (isset($matches[2]) && ($branchesPath === $matches[2] || $tagsPath === $matches[2])) {
                    // we are in a branches path
                    $version = $this->versionParser->normalizeBranch($matches[3]);
                    $prettyVersion = 'dev-' . $matches[3];

return array('version' => $version, 'commit' => '', 'pretty_version' => $prettyVersion);
                }

$prettyVersion = trim($matches[1]);
                if ($prettyVersion === 'trunk') {
                    $version = 'dev-trunk';
                } else {
                    $version = $this->versionParser->normalize($prettyVersion);
                }

return array('version' => $version, 'commit' => '', 'pretty_version' => $prettyVersion);
            }
        }

return null;
    }
}
<?php

namespace Composer\Package\Version;

use Composer\Filter\PlatformRequirementFilter\IgnoreAllPlatformRequirementFilter;
use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterFactory;
use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterInterface;
use Composer\Package\BasePackage;
use Composer\Package\AliasPackage;
use Composer\Package\PackageInterface;
use Composer\Composer;
use Composer\Package\Loader\ArrayLoader;
use Composer\Package\Dumper\ArrayDumper;
use Composer\Pcre\Preg;
use Composer\Repository\RepositorySet;
use Composer\Repository\PlatformRepository;
use Composer\Semver\Constraint\Constraint;
use Composer\Semver\Constraint\ConstraintInterface;

/**
 * Selects the best possible version for a package
 *
 * @author Ryan Weaver <ryan@knpuniversity.com>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class VersionSelector
{
    /** @var RepositorySet */
    private $repositorySet;

/** @var array<string, ConstraintInterface[]> */
    private $platformConstraints = array();

/** @var VersionParser */
    private $parser;

/**
     * @param PlatformRepository $platformRepo If passed in, the versions found will be filtered against their requirements to eliminate any not matching the current platform packages
     */
    public function __construct(RepositorySet $repositorySet, PlatformRepository $platformRepo = null)
    {
        $this->repositorySet = $repositorySet;
        if ($platformRepo) {
            foreach ($platformRepo->getPackages() as $package) {
                $this->platformConstraints[$package->getName()][] = new Constraint('==', $package->getVersion());
            }
        }
    }

/**
     * Given a package name and optional version, returns the latest PackageInterface
     * that matches.
     *
     * @param string                                           $packageName
     * @param string                                           $targetPackageVersion
     * @param string                                           $preferredStability
     * @param PlatformRequirementFilterInterface|bool|string[] $platformRequirementFilter
     * @param int                                              $repoSetFlags*
     * @return PackageInterface|false
     */
    public function findBestCandidate($packageName, $targetPackageVersion = null, $preferredStability = 'stable', $platformRequirementFilter = null, $repoSetFlags = 0)
    {
        if (!isset(BasePackage::$stabilities[$preferredStability])) {
            // If you get this, maybe you are still relying on the Composer 1.x signature where the 3rd arg was the php version
            throw new \UnexpectedValueException('Expected a valid stability name as 3rd argument, got '.$preferredStability);
        }

if (null === $platformRequirementFilter) {
            $platformRequirementFilter = PlatformRequirementFilterFactory::ignoreNothing();
        } elseif (!($platformRequirementFilter instanceof PlatformRequirementFilterInterface)) {
            trigger_error('VersionSelector::findBestCandidate with ignored platform reqs as bool|array is deprecated since Composer 2.2, use an instance of PlatformRequirementFilterInterface instead.', E_USER_DEPRECATED);
            $platformRequirementFilter = PlatformRequirementFilterFactory::fromBoolOrList($platformRequirementFilter);
        }

$constraint = $targetPackageVersion ? $this->getParser()->parseConstraints($targetPackageVersion) : null;
        $candidates = $this->repositorySet->findPackages(strtolower($packageName), $constraint, $repoSetFlags);

if ($this->platformConstraints && !($platformRequirementFilter instanceof IgnoreAllPlatformRequirementFilter)) {
            $platformConstraints = $this->platformConstraints;
            $candidates = array_filter($candidates, function ($pkg) use ($platformConstraints, $platformRequirementFilter) {
                $reqs = $pkg->getRequires();

foreach ($reqs as $name => $link) {
                    if (!$platformRequirementFilter->isIgnored($name)) {
                        if (isset($platformConstraints[$name])) {
                            foreach ($platformConstraints[$name] as $constraint) {
                                if ($link->getConstraint()->matches($constraint)) {
                                    continue 2;
                                }
                            }

return false;
                        } elseif (PlatformRepository::isPlatformPackage($name)) {
                            // Package requires a platform package that is unknown on current platform.
                            // It means that current platform cannot validate this constraint and so package is not installable.
                            return false;
                        }
                    }
                }

return true;
            });
        }

if (!$candidates) {
            return false;
        }

// select highest version if we have many
        $package = reset($candidates);
        $minPriority = BasePackage::$stabilities[$preferredStability];
        foreach ($candidates as $candidate) {
            $candidatePriority = $candidate->getStabilityPriority();
            $currentPriority = $package->getStabilityPriority();

// candidate is less stable than our preferred stability,
            // and current package is more stable than candidate, skip it
            if ($minPriority < $candidatePriority && $currentPriority < $candidatePriority) {
                continue;
            }

// candidate is less stable than our preferred stability,
            // and current package is less stable than candidate, select candidate
            if ($minPriority < $candidatePriority && $candidatePriority < $currentPriority) {
                $package = $candidate;
                continue;
            }

// candidate is more stable than our preferred stability,
            // and current package is less stable than preferred stability, select candidate
            if ($minPriority >= $candidatePriority && $minPriority < $currentPriority) {
                $package = $candidate;
                continue;
            }

// select highest version of the two
            if (version_compare($package->getVersion(), $candidate->getVersion(), '<')) {
                $package = $candidate;
            }
        }

// if we end up with 9999999-dev as selected package, make sure we use the original version instead of the alias
        if ($package instanceof AliasPackage && $package->getVersion() === VersionParser::DEFAULT_BRANCH_ALIAS) {
            $package = $package->getAliasOf();
        }

return $package;
    }

/**
     * Given a concrete version, this returns a ^ constraint (when possible)
     * that should be used, for example, in composer.json.
     *
     * For example:
     *  * 1.2.1         -> ^1.2
     *  * 1.2           -> ^1.2
     *  * v3.2.1        -> ^3.2
     *  * 2.0-beta.1    -> ^2.0@beta
     *  * dev-master    -> ^2.1@dev      (dev version with alias)
     *  * dev-master    -> dev-master    (dev versions are untouched)
     *
     * @param  PackageInterface $package
     * @return string
     */
    public function findRecommendedRequireVersion(PackageInterface $package)
    {
        // Extensions which are versioned in sync with PHP should rather be required as "*" to simplify
        // the requires and have only one required version to change when bumping the php requirement
        if (0 === strpos($package->getName(), 'ext-')) {
            $phpVersion = PHP_MAJOR_VERSION . '.' . PHP_MINOR_VERSION . '.' . PHP_RELEASE_VERSION;
            $extVersion = implode('.', array_slice(explode('.', $package->getVersion()), 0, 3));
            if ($phpVersion === $extVersion) {
                return '*';
            }
        }

$version = $package->getVersion();
        if (!$package->isDev()) {
            return $this->transformVersion($version, $package->getPrettyVersion(), $package->getStability());
        }

$loader = new ArrayLoader($this->getParser());
        $dumper = new ArrayDumper();
        $extra = $loader->getBranchAlias($dumper->dump($package));
        if ($extra && $extra !== VersionParser::DEFAULT_BRANCH_ALIAS) {
            $extra = Preg::replace('{^(\d+\.\d+\.\d+)(\.9999999)-dev$}', '$1.0', $extra, -1, $count);
            if ($count) {
                $extra = str_replace('.9999999', '.0', $extra);

return $this->transformVersion($extra, $extra, 'dev');
            }
        }

return $package->getPrettyVersion();
    }

/**
     * @param string $version
     * @param string $prettyVersion
     * @param string $stability
     *
     * @return string
     */
    private function transformVersion($version, $prettyVersion, $stability)
    {
        // attempt to transform 2.1.1 to 2.1
        // this allows you to upgrade through minor versions
        $semanticVersionParts = explode('.', $version);

// check to see if we have a semver-looking version
        if (count($semanticVersionParts) == 4 && Preg::isMatch('{^0\D?}', $semanticVersionParts[3])) {
            // remove the last parts (i.e. the patch version number and any extra)
            if ($semanticVersionParts[0] === '0') {
                unset($semanticVersionParts[3]);
            } else {
                unset($semanticVersionParts[2], $semanticVersionParts[3]);
            }
            $version = implode('.', $semanticVersionParts);
        } else {
            return $prettyVersion;
        }

// append stability flag if not default
        if ($stability != 'stable') {
            $version .= '@'.$stability;
        }

// 2.1 -> ^2.1
        return '^' . $version;
    }

/**
     * @return VersionParser
     */
    private function getParser()
    {
        if ($this->parser === null) {
            $this->parser = new VersionParser();
        }

return $this->parser;
    }
}
<?php

namespace Composer\Package\Version;

use Composer\Package\BasePackage;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class StabilityFilter
{
    /**
     * Checks if any of the provided package names in the given stability match the configured acceptable stability and flags
     *
     * @param int[] $acceptableStabilities array of stability => BasePackage::STABILITY_* value
     * @phpstan-param array<string, BasePackage::STABILITY_*> $acceptableStabilities
     * @param int[] $stabilityFlags an array of package name => BasePackage::STABILITY_* value
     * @phpstan-param array<string, BasePackage::STABILITY_*> $stabilityFlags
     * @param  string[] $names     The package name(s) to check for stability flags
     * @param  string   $stability one of 'stable', 'RC', 'beta', 'alpha' or 'dev'
     * @return bool     true if any package name is acceptable
     */
    public static function isPackageAcceptable(array $acceptableStabilities, array $stabilityFlags, array $names, $stability)
    {
        foreach ($names as $name) {
            // allow if package matches the package-specific stability flag
            if (isset($stabilityFlags[$name])) {
                if (BasePackage::$stabilities[$stability] <= $stabilityFlags[$name]) {
                    return true;
                }
            } elseif (isset($acceptableStabilities[$stability])) {
                // allow if package matches the global stability requirement and has no exception
                return true;
            }
        }

return false;
    }
}
<?php

namespace Composer\Package\Dumper;

use Composer\Package\BasePackage;
use Composer\Package\PackageInterface;
use Composer\Package\CompletePackageInterface;
use Composer\Package\RootPackageInterface;

/**
 * @author Konstantin Kudryashiv <ever.zet@gmail.com>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class ArrayDumper
{
    /**
     * @return array<string, mixed>
     */
    public function dump(PackageInterface $package)
    {
        $keys = array(
            'binaries' => 'bin',
            'type',
            'extra',
            'installationSource' => 'installation-source',
            'autoload',
            'devAutoload' => 'autoload-dev',
            'notificationUrl' => 'notification-url',
            'includePaths' => 'include-path',
        );

$data = array();
        $data['name'] = $package->getPrettyName();
        $data['version'] = $package->getPrettyVersion();
        $data['version_normalized'] = $package->getVersion();

if ($package->getTargetDir()) {
            $data['target-dir'] = $package->getTargetDir();
        }

if ($package->getSourceType()) {
            $data['source']['type'] = $package->getSourceType();
            $data['source']['url'] = $package->getSourceUrl();
            if (null !== ($value = $package->getSourceReference())) {
                $data['source']['reference'] = $value;
            }
            if ($mirrors = $package->getSourceMirrors()) {
                $data['source']['mirrors'] = $mirrors;
            }
        }

if ($package->getDistType()) {
            $data['dist']['type'] = $package->getDistType();
            $data['dist']['url'] = $package->getDistUrl();
            if (null !== ($value = $package->getDistReference())) {
                $data['dist']['reference'] = $value;
            }
            if (null !== ($value = $package->getDistSha1Checksum())) {
                $data['dist']['shasum'] = $value;
            }
            if ($mirrors = $package->getDistMirrors()) {
                $data['dist']['mirrors'] = $mirrors;
            }
        }

foreach (BasePackage::$supportedLinkTypes as $type => $opts) {
            if ($links = $package->{'get'.ucfirst($opts['method'])}()) {
                foreach ($links as $link) {
                    $data[$type][$link->getTarget()] = $link->getPrettyConstraint();
                }
                ksort($data[$type]);
            }
        }

if ($packages = $package->getSuggests()) {
            ksort($packages);
            $data['suggest'] = $packages;
        }

if ($package->getReleaseDate()) {
            $data['time'] = $package->getReleaseDate()->format(DATE_RFC3339);
        }

if ($package->isDefaultBranch()) {
            $data['default-branch'] = true;
        }

$data = $this->dumpValues($package, $keys, $data);

if ($package instanceof CompletePackageInterface) {
            if ($package->getArchiveName()) {
                $data['archive']['name'] = $package->getArchiveName();
            }
            if ($package->getArchiveExcludes()) {
                $data['archive']['exclude'] = $package->getArchiveExcludes();
            }

$keys = array(
                'scripts',
                'license',
                'authors',
                'description',
                'homepage',
                'keywords',
                'repositories',
                'support',
                'funding',
            );

$data = $this->dumpValues($package, $keys, $data);

if (isset($data['keywords']) && \is_array($data['keywords'])) {
                sort($data['keywords']);
            }

if ($package->isAbandoned()) {
                $data['abandoned'] = $package->getReplacementPackage() ?: true;
            }
        }

if ($package instanceof RootPackageInterface) {
            $minimumStability = $package->getMinimumStability();
            if ($minimumStability) {
                $data['minimum-stability'] = $minimumStability;
            }
        }

if (\count($package->getTransportOptions()) > 0) {
            $data['transport-options'] = $package->getTransportOptions();
        }

return $data;
    }

/**
     * @param array<int|string, string> $keys
     * @param array<string, mixed>      $data
     *
     * @return array<string, mixed>
     */
    private function dumpValues(PackageInterface $package, array $keys, array $data)
    {
        foreach ($keys as $method => $key) {
            if (is_numeric($method)) {
                $method = $key;
            }

$getter = 'get'.ucfirst($method);
            $value = $package->$getter();

if (null !== $value && !(\is_array($value) && 0 === \count($value))) {
                $data[$key] = $value;
            }
        }

return $data;
    }
}
<?php

namespace Composer\Package;

use Composer\Repository\RepositoryInterface;
use Composer\Repository\PlatformRepository;

/**
 * Base class for packages providing name storage and default match implementation
 *
 * @author Nils Adermann <naderman@naderman.de>
 */
abstract class BasePackage implements PackageInterface
{
    /**
     * @phpstan-var array<non-empty-string, array{description: string, method: Link::TYPE_*}>
     * @internal
     */
    public static $supportedLinkTypes = array(
        'require' => array('description' => 'requires', 'method' => Link::TYPE_REQUIRE),
        'conflict' => array('description' => 'conflicts', 'method' => Link::TYPE_CONFLICT),
        'provide' => array('description' => 'provides', 'method' => Link::TYPE_PROVIDE),
        'replace' => array('description' => 'replaces', 'method' => Link::TYPE_REPLACE),
        'require-dev' => array('description' => 'requires (for development)', 'method' => Link::TYPE_DEV_REQUIRE),
    );

const STABILITY_STABLE = 0;
    const STABILITY_RC = 5;
    const STABILITY_BETA = 10;
    const STABILITY_ALPHA = 15;
    const STABILITY_DEV = 20;

/** @var array<string, self::STABILITY_*> */
    public static $stabilities = array(
        'stable' => self::STABILITY_STABLE,
        'RC' => self::STABILITY_RC,
        'beta' => self::STABILITY_BETA,
        'alpha' => self::STABILITY_ALPHA,
        'dev' => self::STABILITY_DEV,
    );

/**
     * READ-ONLY: The package id, public for fast access in dependency solver
     * @var int
     * @internal
     * @readonly
     */
    public $id;
    /** @var string */
    protected $name;
    /** @var string */
    protected $prettyName;
    /** @var ?RepositoryInterface */
    protected $repository = null;

/**
     * All descendants' constructors should call this parent constructor
     *
     * @param string $name The package's name
     */
    public function __construct($name)
    {
        $this->prettyName = $name;
        $this->name = strtolower($name);
        $this->id = -1;
    }

/**
     * @inheritDoc
     */
    public function getName()
    {
        return $this->name;
    }

/**
     * @inheritDoc
     */
    public function getPrettyName()
    {
        return $this->prettyName;
    }

/**
     * @inheritDoc
     */
    public function getNames($provides = true)
    {
        $names = array(
            $this->getName() => true,
        );

if ($provides) {
            foreach ($this->getProvides() as $link) {
                $names[$link->getTarget()] = true;
            }
        }

foreach ($this->getReplaces() as $link) {
            $names[$link->getTarget()] = true;
        }

return array_keys($names);
    }

/**
     * @inheritDoc
     */
    public function setId($id)
    {
        $this->id = $id;
    }

/**
     * @inheritDoc
     */
    public function getId()
    {
        return $this->id;
    }

/**
     * @inheritDoc
     */
    public function setRepository(RepositoryInterface $repository)
    {
        if ($this->repository && $repository !== $this->repository) {
            throw new \LogicException('A package can only be added to one repository');
        }
        $this->repository = $repository;
    }

/**
     * @inheritDoc
     */
    public function getRepository()
    {
        return $this->repository;
    }

/**
     * checks if this package is a platform package
     *
     * @return bool
     */
    public function isPlatform()
    {
        return $this->getRepository() instanceof PlatformRepository;
    }

/**
     * Returns package unique name, constructed from name, version and release type.
     *
     * @return string
     */
    public function getUniqueName()
    {
        return $this->getName().'-'.$this->getVersion();
    }

/**
     * @return bool
     */
    public function equals(PackageInterface $package)
    {
        $self = $this;
        if ($this instanceof AliasPackage) {
            $self = $this->getAliasOf();
        }
        if ($package instanceof AliasPackage) {
            $package = $package->getAliasOf();
        }

return $package === $self;
    }

/**
     * Converts the package into a readable and unique string
     *
     * @return string
     */
    public function __toString()
    {
        return $this->getUniqueName();
    }

public function getPrettyString()
    {
        return $this->getPrettyName().' '.$this->getPrettyVersion();
    }

/**
     * @inheritDoc
     */
    public function getFullPrettyVersion($truncate = true, $displayMode = PackageInterface::DISPLAY_SOURCE_REF_IF_DEV)
    {
        if ($displayMode === PackageInterface::DISPLAY_SOURCE_REF_IF_DEV &&
            (!$this->isDev() || !\in_array($this->getSourceType(), array('hg', 'git')))
        ) {
            return $this->getPrettyVersion();
        }

switch ($displayMode) {
            case PackageInterface::DISPLAY_SOURCE_REF_IF_DEV:
            case PackageInterface::DISPLAY_SOURCE_REF:
                $reference = $this->getSourceReference();
                break;
            case PackageInterface::DISPLAY_DIST_REF:
                $reference = $this->getDistReference();
                break;
            default:
                throw new \UnexpectedValueException('Display mode '.$displayMode.' is not supported');
        }

if (null === $reference) {
            return $this->getPrettyVersion();
        }

// if source reference is a sha1 hash -- truncate
        if ($truncate && \strlen($reference) === 40 && $this->getSourceType() !== 'svn') {
            return $this->getPrettyVersion() . ' ' . substr($reference, 0, 7);
        }

return $this->getPrettyVersion() . ' ' . $reference;
    }

/**
     * @return int
     *
     * @phpstan-return self::STABILITY_*
     */
    public function getStabilityPriority()
    {
        return self::$stabilities[$this->getStability()];
    }

public function __clone()
    {
        $this->repository = null;
        $this->id = -1;
    }

/**
     * Build a regexp from a package name, expanding * globs as required
     *
     * @param  string $allowPattern
     * @param  string $wrap         Wrap the cleaned string by the given string
     * @return string
     */
    public static function packageNameToRegexp($allowPattern, $wrap = '{^%s$}i')
    {
        $cleanedAllowPattern = str_replace('\\*', '.*', preg_quote($allowPattern));

return sprintf($wrap, $cleanedAllowPattern);
    }

/**
     * Build a regexp from package names, expanding * globs as required
     *
     * @param string[] $packageNames
     * @param string $wrap
     * @return string
     */
    public static function packageNamesToRegexp(array $packageNames, $wrap = '{^(?:%s)$}iD')
    {
        $packageNames = array_map(
            function ($packageName) {
                return BasePackage::packageNameToRegexp($packageName, '%s');
            },
            $packageNames
        );

return sprintf($wrap, implode('|', $packageNames));
    }
}
<?php

namespace Composer;

use Composer\Package\RootPackageInterface;
use Composer\Package\Locker;
use Composer\Pcre\Preg;
use Composer\Util\Loop;
use Composer\Repository\RepositoryManager;
use Composer\Installer\InstallationManager;
use Composer\Plugin\PluginManager;
use Composer\Downloader\DownloadManager;
use Composer\EventDispatcher\EventDispatcher;
use Composer\Autoload\AutoloadGenerator;
use Composer\Package\Archiver\ArchiveManager;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 * @author Konstantin Kudryashiv <ever.zet@gmail.com>
 * @author Nils Adermann <naderman@naderman.de>
 */
class Composer
{
    /*
     * Examples of the following constants in the various configurations they can be in
     *
     * releases (phar):
     * const VERSION = '1.8.2';
     * const BRANCH_ALIAS_VERSION = '';
     * const RELEASE_DATE = '2019-01-29 15:00:53';
     * const SOURCE_VERSION = '';
     *
     * snapshot builds (phar):
     * const VERSION = 'd3873a05650e168251067d9648845c220c50e2d7';
     * const BRANCH_ALIAS_VERSION = '1.9-dev';
     * const RELEASE_DATE = '2019-02-20 07:43:56';
     * const SOURCE_VERSION = '';
     *
     * source (git clone):
     * const VERSION = '@package_version@';
     * const BRANCH_ALIAS_VERSION = '@package_branch_alias_version@';
     * const RELEASE_DATE = '@release_date@';
     * const SOURCE_VERSION = '1.8-dev+source';
     */
    const VERSION = '2.2.5';
    const BRANCH_ALIAS_VERSION = '';
    const RELEASE_DATE = '2022-01-21 17:25:52';
    const SOURCE_VERSION = '';

/**
     * Version number of the internal composer-runtime-api package
     *
     * This is used to version features available to projects at runtime
     * like the platform-check file, the Composer\InstalledVersions class
     * and possibly others in the future.
     *
     * @var string
     */
    const RUNTIME_API_VERSION = '2.2.2';

/**
     * @return string
     */
    public static function getVersion()
    {
        // no replacement done, this must be a source checkout
        if (self::VERSION === '@package_version'.'@') {
            return self::SOURCE_VERSION;
        }

// we have a branch alias and version is a commit id, this must be a snapshot build
        if (self::BRANCH_ALIAS_VERSION !== '' && Preg::isMatch('{^[a-f0-9]{40}$}', self::VERSION)) {
            return self::BRANCH_ALIAS_VERSION.'+'.self::VERSION;
        }

return self::VERSION;
    }

/**
     * @var RootPackageInterface
     */
    private $package;

/**
     * @var ?Locker
     */
    private $locker = null;

/**
     * @var Loop
     */
    private $loop;

/**
     * @var Repository\RepositoryManager
     */
    private $repositoryManager;

/**
     * @var Downloader\DownloadManager
     */
    private $downloadManager;

/**
     * @var Installer\InstallationManager
     */
    private $installationManager;

/**
     * @var Plugin\PluginManager
     */
    private $pluginManager;

/**
     * @var Config
     */
    private $config;

/**
     * @var EventDispatcher
     */
    private $eventDispatcher;

/**
     * @var Autoload\AutoloadGenerator
     */
    private $autoloadGenerator;

/**
     * @var ArchiveManager
     */
    private $archiveManager;

/**
     * @return void
     */
    public function setPackage(RootPackageInterface $package)
    {
        $this->package = $package;
    }

/**
     * @return RootPackageInterface
     */
    public function getPackage()
    {
        return $this->package;
    }

/**
     * @return void
     */
    public function setConfig(Config $config)
    {
        $this->config = $config;
    }

/**
     * @return Config
     */
    public function getConfig()
    {
        return $this->config;
    }

/**
     * @return void
     */
    public function setLocker(Locker $locker)
    {
        $this->locker = $locker;
    }

/**
     * @return ?Locker
     */
    public function getLocker()
    {
        return $this->locker;
    }

/**
     * @return void
     */
    public function setLoop(Loop $loop)
    {
        $this->loop = $loop;
    }

/**
     * @return Loop
     */
    public function getLoop()
    {
        return $this->loop;
    }

/**
     * @return void
     */
    public function setRepositoryManager(RepositoryManager $manager)
    {
        $this->repositoryManager = $manager;
    }

/**
     * @return RepositoryManager
     */
    public function getRepositoryManager()
    {
        return $this->repositoryManager;
    }

/**
     * @return void
     */
    public function setDownloadManager(DownloadManager $manager)
    {
        $this->downloadManager = $manager;
    }

/**
     * @return DownloadManager
     */
    public function getDownloadManager()
    {
        return $this->downloadManager;
    }

/**
     * @return void
     */
    public function setArchiveManager(ArchiveManager $manager)
    {
        $this->archiveManager = $manager;
    }

/**
     * @return ArchiveManager
     */
    public function getArchiveManager()
    {
        return $this->archiveManager;
    }

/**
     * @return void
     */
    public function setInstallationManager(InstallationManager $manager)
    {
        $this->installationManager = $manager;
    }

/**
     * @return InstallationManager
     */
    public function getInstallationManager()
    {
        return $this->installationManager;
    }

/**
     * @return void
     */
    public function setPluginManager(PluginManager $manager)
    {
        $this->pluginManager = $manager;
    }

/**
     * @return PluginManager
     */
    public function getPluginManager()
    {
        return $this->pluginManager;
    }

/**
     * @return void
     */
    public function setEventDispatcher(EventDispatcher $eventDispatcher)
    {
        $this->eventDispatcher = $eventDispatcher;
    }

/**
     * @return EventDispatcher
     */
    public function getEventDispatcher()
    {
        return $this->eventDispatcher;
    }

/**
     * @return void
     */
    public function setAutoloadGenerator(AutoloadGenerator $autoloadGenerator)
    {
        $this->autoloadGenerator = $autoloadGenerator;
    }

/**
     * @return AutoloadGenerator
     */
    public function getAutoloadGenerator()
    {
        return $this->autoloadGenerator;
    }
}
<?php

namespace Composer\Json;

use Exception;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class JsonValidationException extends Exception
{
    /**
     * @var string[]
     */
    protected $errors;

/**
     * @param string   $message
     * @param string[] $errors
     */
    public function __construct($message, $errors = array(), Exception $previous = null)
    {
        $this->errors = $errors;
        parent::__construct((string) $message, 0, $previous);
    }

/**
     * @return string[]
     */
    public function getErrors()
    {
        return $this->errors;
    }
}
<?php

namespace Composer\Json;

use Composer\Pcre\Preg;
use Composer\Repository\PlatformRepository;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class JsonManipulator
{
    /** @var string */
    private static $DEFINES = '(?(DEFINE)
       (?<number>    -? (?= [1-9]|0(?!\d) ) \d++ (\.\d++)? ([eE] [+-]?+ \d++)? )
       (?<boolean>   true | false | null )
       (?<string>    " ([^"\\\\]*+ | \\\\ ["\\\\bfnrt\/] | \\\\ u [0-9A-Fa-f]{4} )* " )
       (?<array>     \[  (?:  (?&json) \s*+ (?: , (?&json) \s*+ )*+  )?+  \s*+ \] )
       (?<pair>      \s*+ (?&string) \s*+ : (?&json) \s*+ )
       (?<object>    \{  (?:  (?&pair)  (?: , (?&pair)  )*+  )?+  \s*+ \} )
       (?<json>      \s*+ (?: (?&number) | (?&boolean) | (?&string) | (?&array) | (?&object) ) )
    )';

/** @var string */
    private $contents;
    /** @var string */
    private $newline;
    /** @var string */
    private $indent;

/**
     * @param string $contents
     */
    public function __construct($contents)
    {
        $contents = trim($contents);
        if ($contents === '') {
            $contents = '{}';
        }
        if (!Preg::isMatch('#^\{(.*)\}$#s', $contents)) {
            throw new \InvalidArgumentException('The json file must be an object ({})');
        }
        $this->newline = false !== strpos($contents, "\r\n") ? "\r\n" : "\n";
        $this->contents = $contents === '{}' ? '{' . $this->newline . '}' : $contents;
        $this->detectIndenting();
    }

/**
     * @return string
     */
    public function getContents()
    {
        return $this->contents . $this->newline;
    }

/**
     * @param string $type
     * @param string $package
     * @param string $constraint
     * @param bool   $sortPackages
     * @return bool
     */
    public function addLink($type, $package, $constraint, $sortPackages = false)
    {
        $decoded = JsonFile::parseJson($this->contents);

// no link of that type yet
        if (!isset($decoded[$type])) {
            return $this->addMainKey($type, array($package => $constraint));
        }

$regex = '{'.self::$DEFINES.'^(?P<start>\s*\{\s*(?:(?&string)\s*:\s*(?&json)\s*,\s*)*?)'.
            '(?P<property>'.preg_quote(JsonFile::encode($type)).'\s*:\s*)(?P<value>(?&json))(?P<end>.*)}sx';
        if (!Preg::isMatch($regex, $this->contents, $matches)) {
            return false;
        }

$links = $matches['value'];

// try to find existing link
        $packageRegex = str_replace('/', '\\\\?/', preg_quote($package));
        $regex = '{'.self::$DEFINES.'"(?P<package>'.$packageRegex.')"(\s*:\s*)(?&string)}ix';
        if (Preg::isMatch($regex, $links, $packageMatches)) {
            // update existing link
            $existingPackage = $packageMatches['package'];
            $packageRegex = str_replace('/', '\\\\?/', preg_quote($existingPackage));
            $links = Preg::replaceCallback('{'.self::$DEFINES.'"'.$packageRegex.'"(?P<separator>\s*:\s*)(?&string)}ix', function ($m) use ($existingPackage, $constraint) {
                return JsonFile::encode(str_replace('\\/', '/', $existingPackage)) . $m['separator'] . '"' . $constraint . '"';
            }, $links);
        } else {
            if (Preg::isMatch('#^\s*\{\s*\S+.*?(\s*\}\s*)$#s', $links, $match)) {
                // link missing but non empty links
                $links = Preg::replace(
                    '{'.preg_quote($match[1]).'$}',
                    // addcslashes is used to double up backslashes/$ since preg_replace resolves them as back references otherwise, see #1588
                    addcslashes(',' . $this->newline . $this->indent . $this->indent . JsonFile::encode($package).': '.JsonFile::encode($constraint) . $match[1], '\\$'),
                    $links
                );
            } else {
                // links empty
                $links = '{' . $this->newline .
                    $this->indent . $this->indent . JsonFile::encode($package).': '.JsonFile::encode($constraint) . $this->newline .
                    $this->indent . '}';
            }
        }

if (true === $sortPackages) {
            $requirements = json_decode($links, true);
            $this->sortPackages($requirements);
            $links = $this->format($requirements);
        }

$this->contents = $matches['start'] . $matches['property'] . $links . $matches['end'];

return true;
    }

/**
     * Sorts packages by importance (platform packages first, then PHP dependencies) and alphabetically.
     *
     * @link https://getcomposer.org/doc/02-libraries.md#platform-packages
     *
     * @param array<string> $packages
     * @return void
     */
    private function sortPackages(array &$packages = array())
    {
        $prefix = function ($requirement) {
            if (PlatformRepository::isPlatformPackage($requirement)) {
                return Preg::replace(
                    array(
                        '/^php/',
                        '/^hhvm/',
                        '/^ext/',
                        '/^lib/',
                        '/^\D/',
                    ),
                    array(
                        '0-$0',
                        '1-$0',
                        '2-$0',
                        '3-$0',
                        '4-$0',
                    ),
                    $requirement
                );
            }

return '5-'.$requirement;
        };

uksort($packages, function ($a, $b) use ($prefix) {
            return strnatcmp($prefix($a), $prefix($b));
        });
    }

/**
     * @param string                $name
     * @param array<string, mixed>  $config
     * @param bool                  $append
     * @return bool
     */
    public function addRepository($name, $config, $append = true)
    {
        return $this->addSubNode('repositories', $name, $config, $append);
    }

/**
     * @param string $name
     * @return bool
     */
    public function removeRepository($name)
    {
        return $this->removeSubNode('repositories', $name);
    }

/**
     * @param string $name
     * @param mixed  $value
     * @return bool
     */
    public function addConfigSetting($name, $value)
    {
        return $this->addSubNode('config', $name, $value);
    }

/**
     * @param string $name
     * @return bool
     */
    public function removeConfigSetting($name)
    {
        return $this->removeSubNode('config', $name);
    }

/**
     * @param string $name
     * @param mixed $value
     * @return bool
     */
    public function addProperty($name, $value)
    {
        if (strpos($name, 'suggest.') === 0) {
            return $this->addSubNode('suggest', substr($name, 8), $value);
        }

if (strpos($name, 'extra.') === 0) {
            return $this->addSubNode('extra', substr($name, 6), $value);
        }

if (strpos($name, 'scripts.') === 0) {
            return $this->addSubNode('scripts', substr($name, 8), $value);
        }

return $this->addMainKey($name, $value);
    }

/**
     * @param string $name
     * @return bool
     */
    public function removeProperty($name)
    {
        if (strpos($name, 'suggest.') === 0) {
            return $this->removeSubNode('suggest', substr($name, 8));
        }

if (strpos($name, 'extra.') === 0) {
            return $this->removeSubNode('extra', substr($name, 6));
        }

if (strpos($name, 'scripts.') === 0) {
            return $this->removeSubNode('scripts', substr($name, 8));
        }

return $this->removeMainKey($name);
    }

/**
     * @param string $mainNode
     * @param string $name
     * @param mixed  $value
     * @param bool   $append
     * @return bool
     */
    public function addSubNode($mainNode, $name, $value, $append = true)
    {
        $decoded = JsonFile::parseJson($this->contents);

$subName = null;
        if (in_array($mainNode, array('config', 'extra', 'scripts')) && false !== strpos($name, '.')) {
            list($name, $subName) = explode('.', $name, 2);
        }

// no main node yet
        if (!isset($decoded[$mainNode])) {
            if ($subName !== null) {
                $this->addMainKey($mainNode, array($name => array($subName => $value)));
            } else {
                $this->addMainKey($mainNode, array($name => $value));
            }

return true;
        }

// main node content not match-able
        $nodeRegex = '{'.self::$DEFINES.'^(?P<start> \s* \{ \s* (?: (?&string) \s* : (?&json) \s* , \s* )*?'.
            preg_quote(JsonFile::encode($mainNode)).'\s*:\s*)(?P<content>(?&object))(?P<end>.*)}sx';

try {
            if (!Preg::isMatch($nodeRegex, $this->contents, $match)) {
                return false;
            }
        } catch (\RuntimeException $e) {
            if ($e->getCode() === PREG_BACKTRACK_LIMIT_ERROR) {
                return false;
            }
            throw $e;
        }

$children = $match['content'];
        // invalid match due to un-regexable content, abort
        if (!@json_decode($children)) {
            return false;
        }

$that = $this;

// child exists
        $childRegex = '{'.self::$DEFINES.'(?P<start>"'.preg_quote($name).'"\s*:\s*)(?P<content>(?&json))(?P<end>,?)}x';
        if (Preg::isMatch($childRegex, $children, $matches)) {
            $children = Preg::replaceCallback($childRegex, function ($matches) use ($subName, $value, $that) {
                if ($subName !== null) {
                    $curVal = json_decode($matches['content'], true);
                    if (!is_array($curVal)) {
                        $curVal = array();
                    }
                    $curVal[$subName] = $value;
                    $value = $curVal;
                }

return $matches['start'] . $that->format($value, 1) . $matches['end'];
            }, $children);
        } else {
            Preg::match('#^{ (?P<leadingspace>\s*?) (?P<content>\S+.*?)? (?P<trailingspace>\s*) }$#sx', $children, $match);

$whitespace = '';
            if (!empty($match['trailingspace'])) {
                $whitespace = $match['trailingspace'];
            }

if (!empty($match['content'])) {
                if ($subName !== null) {
                    $value = array($subName => $value);
                }

// child missing but non empty children
                if ($append) {
                    $children = Preg::replace(
                        '#'.$whitespace.'}$#',
                        addcslashes(',' . $this->newline . $this->indent . $this->indent . JsonFile::encode($name).': '.$this->format($value, 1) . $whitespace . '}', '\\$'),
                        $children
                    );
                } else {
                    $whitespace = '';
                    if (!empty($match['leadingspace'])) {
                        $whitespace = $match['leadingspace'];
                    }

$children = Preg::replace(
                        '#^{'.$whitespace.'#',
                        addcslashes('{' . $whitespace . JsonFile::encode($name).': '.$this->format($value, 1) . ',' . $this->newline . $this->indent . $this->indent, '\\$'),
                        $children
                    );
                }
            } else {
                if ($subName !== null) {
                    $value = array($subName => $value);
                }

// children present but empty
                $children = '{' . $this->newline . $this->indent . $this->indent . JsonFile::encode($name).': '.$this->format($value, 1) . $whitespace . '}';
            }
        }

$this->contents = Preg::replaceCallback($nodeRegex, function ($m) use ($children) {
            return $m['start'] . $children . $m['end'];
        }, $this->contents);

return true;
    }

/**
     * @param string $mainNode
     * @param string $name
     * @return bool
     */
    public function removeSubNode($mainNode, $name)
    {
        $decoded = JsonFile::parseJson($this->contents);

// no node or empty node
        if (empty($decoded[$mainNode])) {
            return true;
        }

// no node content match-able
        $nodeRegex = '{'.self::$DEFINES.'^(?P<start> \s* \{ \s* (?: (?&string) \s* : (?&json) \s* , \s* )*?'.
            preg_quote(JsonFile::encode($mainNode)).'\s*:\s*)(?P<content>(?&object))(?P<end>.*)}sx';
        try {
            if (!Preg::isMatch($nodeRegex, $this->contents, $match)) {
                return false;
            }
        } catch (\RuntimeException $e) {
            if ($e->getCode() === PREG_BACKTRACK_LIMIT_ERROR) {
                return false;
            }
            throw $e;
        }

$children = $match['content'];

// invalid match due to un-regexable content, abort
        if (!@json_decode($children, true)) {
            return false;
        }

$subName = null;
        if (in_array($mainNode, array('config', 'extra', 'scripts')) && false !== strpos($name, '.')) {
            list($name, $subName) = explode('.', $name, 2);
        }

// no node to remove
        if (!isset($decoded[$mainNode][$name]) || ($subName && !isset($decoded[$mainNode][$name][$subName]))) {
            return true;
        }

// try and find a match for the subkey
        $keyRegex = str_replace('/', '\\\\?/', preg_quote($name));
        if (Preg::isMatch('{"'.$keyRegex.'"\s*:}i', $children)) {
            // find best match for the value of "name"
            if (Preg::isMatchAll('{'.self::$DEFINES.'"'.$keyRegex.'"\s*:\s*(?:(?&json))}x', $children, $matches)) {
                $bestMatch = '';
                foreach ($matches[0] as $match) {
                    if (strlen($bestMatch) < strlen($match)) {
                        $bestMatch = $match;
                    }
                }
                $childrenClean = Preg::replace('{,\s*'.preg_quote($bestMatch).'}i', '', $children, -1, $count);
                if (1 !== $count) {
                    $childrenClean = Preg::replace('{'.preg_quote($bestMatch).'\s*,?\s*}i', '', $childrenClean, -1, $count);
                    if (1 !== $count) {
                        return false;
                    }
                }
            }
        } else {
            $childrenClean = $children;
        }

if (!isset($childrenClean)) {
            throw new \InvalidArgumentException("JsonManipulator: \$childrenClean is not defined. Please report at https://github.com/composer/composer/issues/new.");
        }

// no child data left, $name was the only key in
        Preg::match('#^{ \s*? (?P<content>\S+.*?)? (?P<trailingspace>\s*) }$#sx', $childrenClean, $match);
        if (empty($match['content'])) {
            $newline = $this->newline;
            $indent = $this->indent;

$this->contents = Preg::replaceCallback($nodeRegex, function ($matches) use ($indent, $newline) {
                return $matches['start'] . '{' . $newline . $indent . '}' . $matches['end'];
            }, $this->contents);

// we have a subname, so we restore the rest of $name
            if ($subName !== null) {
                $curVal = json_decode($children, true);
                unset($curVal[$name][$subName]);
                $this->addSubNode($mainNode, $name, $curVal[$name]);
            }

return true;
        }

$that = $this;
        $this->contents = Preg::replaceCallback($nodeRegex, function ($matches) use ($that, $name, $subName, $childrenClean) {
            if ($subName !== null) {
                $curVal = json_decode($matches['content'], true);
                unset($curVal[$name][$subName]);
                $childrenClean = $that->format($curVal);
            }

return $matches['start'] . $childrenClean . $matches['end'];
        }, $this->contents);

return true;
    }

/**
     * @param string $key
     * @param mixed  $content
     * @return bool
     */
    public function addMainKey($key, $content)
    {
        $decoded = JsonFile::parseJson($this->contents);
        $content = $this->format($content);

// key exists already
        $regex = '{'.self::$DEFINES.'^(?P<start>\s*\{\s*(?:(?&string)\s*:\s*(?&json)\s*,\s*)*?)'.
            '(?P<key>'.preg_quote(JsonFile::encode($key)).'\s*:\s*(?&json))(?P<end>.*)}sx';
        if (isset($decoded[$key]) && Preg::isMatch($regex, $this->contents, $matches)) {
            // invalid match due to un-regexable content, abort
            if (!@json_decode('{'.$matches['key'].'}')) {
                return false;
            }

$this->contents = $matches['start'] . JsonFile::encode($key).': '.$content . $matches['end'];

return true;
        }

// append at the end of the file and keep whitespace
        if (Preg::isMatch('#[^{\s](\s*)\}$#', $this->contents, $match)) {
            $this->contents = Preg::replace(
                '#'.$match[1].'\}$#',
                addcslashes(',' . $this->newline . $this->indent . JsonFile::encode($key). ': '. $content . $this->newline . '}', '\\$'),
                $this->contents
            );

return true;
        }

// append at the end of the file
        $this->contents = Preg::replace(
            '#\}$#',
            addcslashes($this->indent . JsonFile::encode($key). ': '.$content . $this->newline . '}', '\\$'),
            $this->contents
        );

return true;
    }

/**
     * @param string $key
     * @return bool
     */
    public function removeMainKey($key)
    {
        $decoded = JsonFile::parseJson($this->contents);

if (!array_key_exists($key, $decoded)) {
            return true;
        }

// key exists already
        $regex = '{'.self::$DEFINES.'^(?P<start>\s*\{\s*(?:(?&string)\s*:\s*(?&json)\s*,\s*)*?)'.
            '(?P<removal>'.preg_quote(JsonFile::encode($key)).'\s*:\s*(?&json))\s*,?\s*(?P<end>.*)}sx';
        if (Preg::isMatch($regex, $this->contents, $matches)) {
            // invalid match due to un-regexable content, abort
            if (!@json_decode('{'.$matches['removal'].'}')) {
                return false;
            }

// check that we are not leaving a dangling comma on the previous line if the last line was removed
            if (Preg::isMatch('#,\s*$#', $matches['start']) && Preg::isMatch('#^\}$#', $matches['end'])) {
                $matches['start'] = rtrim(Preg::replace('#,(\s*)$#', '$1', $matches['start']), $this->indent);
            }

$this->contents = $matches['start'] . $matches['end'];
            if (Preg::isMatch('#^\{\s*\}\s*$#', $this->contents)) {
                $this->contents = "{\n}";
            }

return true;
        }

return false;
    }

/**
     * @param string $key
     * @return bool
     */
    public function removeMainKeyIfEmpty($key)
    {
        $decoded = JsonFile::parseJson($this->contents);

if (!array_key_exists($key, $decoded)) {
            return true;
        }

if (is_array($decoded[$key]) && count($decoded[$key]) === 0) {
            return $this->removeMainKey($key);
        }

return true;
    }

/**
     * @param mixed $data
     * @param int   $depth
     * @return string
     */
    public function format($data, $depth = 0)
    {
        if (is_array($data)) {
            reset($data);

if (is_numeric(key($data))) {
                foreach ($data as $key => $val) {
                    $data[$key] = $this->format($val, $depth + 1);
                }

return '['.implode(', ', $data).']';
            }

$out = '{' . $this->newline;
            $elems = array();
            foreach ($data as $key => $val) {
                $elems[] = str_repeat($this->indent, $depth + 2) . JsonFile::encode($key). ': '.$this->format($val, $depth + 1);
            }

return $out . implode(','.$this->newline, $elems) . $this->newline . str_repeat($this->indent, $depth + 1) . '}';
        }

return JsonFile::encode($data);
    }

/**
     * @return void
     */
    protected function detectIndenting()
    {
        if (Preg::isMatch('{^([ \t]+)"}m', $this->contents, $match)) {
            $this->indent = $match[1];
        } else {
            $this->indent = '    ';
        }
    }
}
<?php

namespace Composer\Json;

use Composer\Pcre\Preg;

/**
 * Formats json strings used for php < 5.4 because the json_encode doesn't
 * supports the flags JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE
 * in these versions
 *
 * @author Konstantin Kudryashiv <ever.zet@gmail.com>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class JsonFormatter
{
    /**
     * This code is based on the function found at:
     *  http://recursive-design.com/blog/2008/03/11/format-json-with-php/
     *
     * Originally licensed under MIT by Dave Perrett <mail@recursive-design.com>
     *
     *
     * @param  string $json
     * @param  bool   $unescapeUnicode Un escape unicode
     * @param  bool   $unescapeSlashes Un escape slashes
     * @return string
     */
    public static function format($json, $unescapeUnicode, $unescapeSlashes)
    {
        $result = '';
        $pos = 0;
        $strLen = strlen($json);
        $indentStr = '    ';
        $newLine = "\n";
        $outOfQuotes = true;
        $buffer = '';
        $noescape = true;

for ($i = 0; $i < $strLen; $i++) {
            // Grab the next character in the string
            $char = substr($json, $i, 1);

// Are we inside a quoted string?
            if ('"' === $char && $noescape) {
                $outOfQuotes = !$outOfQuotes;
            }

if (!$outOfQuotes) {
                $buffer .= $char;
                $noescape = '\\' === $char ? !$noescape : true;
                continue;
            }
            if ('' !== $buffer) {
                if ($unescapeSlashes) {
                    $buffer = str_replace('\\/', '/', $buffer);
                }

if ($unescapeUnicode && function_exists('mb_convert_encoding')) {
                    // https://stackoverflow.com/questions/2934563/how-to-decode-unicode-escape-sequences-like-u00ed-to-proper-utf-8-encoded-cha
                    $buffer = Preg::replaceCallback('/(\\\\+)u([0-9a-f]{4})/i', function ($match) {
                        $l = strlen($match[1]);

if ($l % 2) {
                            $code = hexdec($match[2]);
                            // 0xD800..0xDFFF denotes UTF-16 surrogate pair which won't be unescaped
                            // see https://github.com/composer/composer/issues/7510
                            if (0xD800 <= $code && 0xDFFF >= $code) {
                                return $match[0];
                            }

return str_repeat('\\', $l - 1) . mb_convert_encoding(
                                pack('H*', $match[2]),
                                'UTF-8',
                                'UCS-2BE'
                            );
                        }

return $match[0];
                    }, $buffer);
                }

$result .= $buffer.$char;
                $buffer = '';
                continue;
            }

if (':' === $char) {
                // Add a space after the : character
                $char .= ' ';
            } elseif ('}' === $char || ']' === $char) {
                $pos--;
                $prevChar = substr($json, $i - 1, 1);

if ('{' !== $prevChar && '[' !== $prevChar) {
                    // If this character is the end of an element,
                    // output a new line and indent the next line
                    $result .= $newLine;
                    for ($j = 0; $j < $pos; $j++) {
                        $result .= $indentStr;
                    }
                } else {
                    // Collapse empty {} and []
                    $result = rtrim($result);
                }
            }

$result .= $char;

// If the last character was the beginning of an element,
            // output a new line and indent the next line
            if (',' === $char || '{' === $char || '[' === $char) {
                $result .= $newLine;

if ('{' === $char || '[' === $char) {
                    $pos++;
                }

for ($j = 0; $j < $pos; $j++) {
                    $result .= $indentStr;
                }
            }
        }

return $result;
    }
}
<?php

namespace Composer\Json;

use Composer\Pcre\Preg;
use JsonSchema\Validator;
use Seld\JsonLint\JsonParser;
use Seld\JsonLint\ParsingException;
use Composer\Util\HttpDownloader;
use Composer\IO\IOInterface;
use Composer\Downloader\TransportException;

/**
 * Reads/writes json files.
 *
 * @author Konstantin Kudryashiv <ever.zet@gmail.com>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class JsonFile
{
    const LAX_SCHEMA = 1;
    const STRICT_SCHEMA = 2;

const JSON_UNESCAPED_SLASHES = 64;
    const JSON_PRETTY_PRINT = 128;
    const JSON_UNESCAPED_UNICODE = 256;

const COMPOSER_SCHEMA_PATH = '/../../../res/composer-schema.json';

/** @var string */
    private $path;
    /** @var ?HttpDownloader */
    private $httpDownloader;
    /** @var ?IOInterface */
    private $io;

/**
     * Initializes json file reader/parser.
     *
     * @param  string                    $path           path to a lockfile
     * @param  ?HttpDownloader           $httpDownloader required for loading http/https json files
     * @param  ?IOInterface              $io
     * @throws \InvalidArgumentException
     */
    public function __construct($path, HttpDownloader $httpDownloader = null, IOInterface $io = null)
    {
        $this->path = $path;

if (null === $httpDownloader && Preg::isMatch('{^https?://}i', $path)) {
            throw new \InvalidArgumentException('http urls require a HttpDownloader instance to be passed');
        }
        $this->httpDownloader = $httpDownloader;
        $this->io = $io;
    }

/**
     * @return string
     */
    public function getPath()
    {
        return $this->path;
    }

/**
     * Checks whether json file exists.
     *
     * @return bool
     */
    public function exists()
    {
        return is_file($this->path);
    }

/**
     * Reads json file.
     *
     * @throws ParsingException
     * @throws \RuntimeException
     * @return mixed
     */
    public function read()
    {
        try {
            if ($this->httpDownloader) {
                $json = $this->httpDownloader->get($this->path)->getBody();
            } else {
                if ($this->io && $this->io->isDebug()) {
                    $realpathInfo = '';
                    $realpath = realpath($this->path);
                    if (false !== $realpath && $realpath !== $this->path) {
                        $realpathInfo = ' (' . $realpath . ')';
                    }
                    $this->io->writeError('Reading ' . $this->path . $realpathInfo);
                }
                $json = file_get_contents($this->path);
            }
        } catch (TransportException $e) {
            throw new \RuntimeException($e->getMessage(), 0, $e);
        } catch (\Exception $e) {
            throw new \RuntimeException('Could not read '.$this->path."\n\n".$e->getMessage());
        }

return static::parseJson($json, $this->path);
    }

/**
     * Writes json file.
     *
     * @param  mixed[]                          $hash    writes hash into json file
     * @param  int                                  $options json_encode options (defaults to JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE)
     * @throws \UnexpectedValueException|\Exception
     * @return void
     */
    public function write(array $hash, $options = 448)
    {
        if ($this->path === 'php://memory') {
            file_put_contents($this->path, static::encode($hash, $options));

return;
        }

$dir = dirname($this->path);
        if (!is_dir($dir)) {
            if (file_exists($dir)) {
                throw new \UnexpectedValueException(
                    realpath($dir).' exists and is not a directory.'
                );
            }
            if (!@mkdir($dir, 0777, true)) {
                throw new \UnexpectedValueException(
                    $dir.' does not exist and could not be created.'
                );
            }
        }

$retries = 3;
        while ($retries--) {
            try {
                $this->filePutContentsIfModified($this->path, static::encode($hash, $options). ($options & self::JSON_PRETTY_PRINT ? "\n" : ''));
                break;
            } catch (\Exception $e) {
                if ($retries > 0) {
                    usleep(500000);
                    continue;
                }

throw $e;
            }
        }
    }

/**
     * Modify file properties only if content modified
     *
     * @param string $path
     * @param string $content
     * @return int|false
     */
    private function filePutContentsIfModified($path, $content)
    {
        $currentContent = @file_get_contents($path);
        if (!$currentContent || ($currentContent != $content)) {
            return file_put_contents($path, $content);
        }

return 0;
    }

/**
     * Validates the schema of the current json file according to composer-schema.json rules
     *
     * @param  int                     $schema     a JsonFile::*_SCHEMA constant
     * @param  string|null             $schemaFile a path to the schema file
     * @throws JsonValidationException
     * @throws ParsingException
     * @return bool                    true on success
     */
    public function validateSchema($schema = self::STRICT_SCHEMA, $schemaFile = null)
    {
        $content = file_get_contents($this->path);
        $data = json_decode($content);

if (null === $data && 'null' !== $content) {
            self::validateSyntax($content, $this->path);
        }

$isComposerSchemaFile = false;
        if (null === $schemaFile) {
            $isComposerSchemaFile = true;
            $schemaFile = __DIR__ . self::COMPOSER_SCHEMA_PATH;
        }

// Prepend with file:// only when not using a special schema already (e.g. in the phar)
        if (false === strpos($schemaFile, '://')) {
            $schemaFile = 'file://' . $schemaFile;
        }

$schemaData = (object) array('$ref' => $schemaFile);

if ($schema === self::LAX_SCHEMA) {
            $schemaData->additionalProperties = true;
            $schemaData->required = array();
        } elseif ($schema === self::STRICT_SCHEMA && $isComposerSchemaFile) {
            $schemaData->additionalProperties = false;
            $schemaData->required = array('name', 'description');
        }

$validator = new Validator();
        $validator->check($data, $schemaData);

if (!$validator->isValid()) {
            $errors = array();
            foreach ((array) $validator->getErrors() as $error) {
                $errors[] = ($error['property'] ? $error['property'].' : ' : '').$error['message'];
            }
            throw new JsonValidationException('"'.$this->path.'" does not match the expected JSON schema', $errors);
        }

return true;
    }

/**
     * Encodes an array into (optionally pretty-printed) JSON
     *
     * @param  mixed  $data    Data to encode into a formatted JSON string
     * @param  int    $options json_encode options (defaults to JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE)
     * @return string Encoded json
     */
    public static function encode($data, $options = 448)
    {
        if (PHP_VERSION_ID >= 50400) {
            $json = json_encode($data, $options);
            if (false === $json) {
                self::throwEncodeError(json_last_error());
            }

//  compact brackets to follow recent php versions
            if (PHP_VERSION_ID < 50428 || (PHP_VERSION_ID >= 50500 && PHP_VERSION_ID < 50512) || (defined('JSON_C_VERSION') && version_compare(phpversion('json'), '1.3.6', '<'))) {
                $json = Preg::replace('/\[\s+\]/', '[]', $json);
                $json = Preg::replace('/\{\s+\}/', '{}', $json);
            }

return $json;
        }

$json = json_encode($data);
        if (false === $json) {
            self::throwEncodeError(json_last_error());
        }

$prettyPrint = (bool) ($options & self::JSON_PRETTY_PRINT);
        $unescapeUnicode = (bool) ($options & self::JSON_UNESCAPED_UNICODE);
        $unescapeSlashes = (bool) ($options & self::JSON_UNESCAPED_SLASHES);

if (!$prettyPrint && !$unescapeUnicode && !$unescapeSlashes) {
            return $json;
        }

return JsonFormatter::format($json, $unescapeUnicode, $unescapeSlashes);
    }

/**
     * Throws an exception according to a given code with a customized message
     *
     * @param  int               $code return code of json_last_error function
     * @throws \RuntimeException
     * @return void
     */
    private static function throwEncodeError($code)
    {
        switch ($code) {
            case JSON_ERROR_DEPTH:
                $msg = 'Maximum stack depth exceeded';
                break;
            case JSON_ERROR_STATE_MISMATCH:
                $msg = 'Underflow or the modes mismatch';
                break;
            case JSON_ERROR_CTRL_CHAR:
                $msg = 'Unexpected control character found';
                break;
            case JSON_ERROR_UTF8:
                $msg = 'Malformed UTF-8 characters, possibly incorrectly encoded';
                break;
            default:
                $msg = 'Unknown error';
        }

throw new \RuntimeException('JSON encoding failed: '.$msg);
    }

/**
     * Parses json string and returns hash.
     *
     * @param ?string $json json string
     * @param string $file the json file
     *
     * @throws ParsingException
     * @return mixed
     */
    public static function parseJson($json, $file = null)
    {
        if (null === $json) {
            return null;
        }
        $data = json_decode($json, true);
        if (null === $data && JSON_ERROR_NONE !== json_last_error()) {
            self::validateSyntax($json, $file);
        }

return $data;
    }

/**
     * Validates the syntax of a JSON string
     *
     * @param  string                    $json
     * @param  string                    $file
     * @throws \UnexpectedValueException
     * @throws ParsingException
     * @return bool                      true on success
     */
    protected static function validateSyntax($json, $file = null)
    {
        $parser = new JsonParser();
        $result = $parser->lint($json);
        if (null === $result) {
            if (defined('JSON_ERROR_UTF8') && JSON_ERROR_UTF8 === json_last_error()) {
                throw new \UnexpectedValueException('"'.$file.'" is not UTF-8, could not parse as JSON');
            }

return true;
        }

throw new ParsingException('"'.$file.'" does not contain valid JSON'."\n".$result->getMessage(), $result->getDetails());
    }
}
<?php

namespace Composer\Platform;

use Composer\Util\Platform;
use Composer\Util\ProcessExecutor;
use Symfony\Component\Process\ExecutableFinder;

class HhvmDetector
{
    /** @var string|false|null */
    private static $hhvmVersion = null;
    /** @var ?ExecutableFinder */
    private $executableFinder;
    /** @var ?ProcessExecutor */
    private $processExecutor;

public function __construct(ExecutableFinder $executableFinder = null, ProcessExecutor $processExecutor = null)
    {
        $this->executableFinder = $executableFinder;
        $this->processExecutor = $processExecutor;
    }

/**
     * @return void
     */
    public function reset()
    {
        self::$hhvmVersion = null;
    }

/**
     * @return string|null
     */
    public function getVersion()
    {
        if (null !== self::$hhvmVersion) {
            return self::$hhvmVersion ?: null;
        }

self::$hhvmVersion = defined('HHVM_VERSION') ? HHVM_VERSION : null;
        if (self::$hhvmVersion === null && !Platform::isWindows()) {
            self::$hhvmVersion = false;
            $this->executableFinder = $this->executableFinder ?: new ExecutableFinder();
            $hhvmPath = $this->executableFinder->find('hhvm');
            if ($hhvmPath !== null) {
                $this->processExecutor = $this->processExecutor ?: new ProcessExecutor();
                $exitCode = $this->processExecutor->execute(
                    ProcessExecutor::escape($hhvmPath).
                    ' --php -d hhvm.jit=0 -r "echo HHVM_VERSION;" 2>/dev/null',
                    self::$hhvmVersion
                );
                if ($exitCode !== 0) {
                    self::$hhvmVersion = false;
                }
            }
        }

return self::$hhvmVersion ?: null;
    }
}
<?php

namespace Composer\Platform;

use Composer\Pcre\Preg;

/**
 * @author Lars Strojny <lars@strojny.net>
 */
class Version
{
    /**
     * @param  string      $opensslVersion
     * @param  bool        $isFips
     * @return string|null
     */
    public static function parseOpenssl($opensslVersion, &$isFips)
    {
        $isFips = false;

if (!Preg::isMatch('/^(?<version>[0-9.]+)(?<patch>[a-z]{0,2})?(?<suffix>(?:-?(?:dev|pre|alpha|beta|rc|fips)[\d]*)*)?(?<garbage>-\w+)?$/', $opensslVersion, $matches)) {
            return null;
        }

$isFips = strpos($matches['suffix'], 'fips') !== false;
        $suffix = strtr('-'.ltrim($matches['suffix'], '-'), array('-fips' => '', '-pre' => '-alpha'));
        $patch = self::convertAlphaVersionToIntVersion($matches['patch']);

return rtrim($matches['version'].'.'.$patch.$suffix, '-');
    }

/**
     * @param  string      $libjpegVersion
     * @return string|null
     */
    public static function parseLibjpeg($libjpegVersion)
    {
        if (!Preg::isMatch('/^(?<major>\d+)(?<minor>[a-z]*)$/', $libjpegVersion, $matches)) {
            return null;
        }

return $matches['major'].'.'.self::convertAlphaVersionToIntVersion($matches['minor']);
    }

/**
     * @param  string      $zoneinfoVersion
     * @return string|null
     */
    public static function parseZoneinfoVersion($zoneinfoVersion)
    {
        if (!Preg::isMatch('/^(?<year>\d{4})(?<revision>[a-z]*)$/', $zoneinfoVersion, $matches)) {
            return null;
        }

return $matches['year'].'.'.self::convertAlphaVersionToIntVersion($matches['revision']);
    }

/**
     * "" => 0, "a" => 1, "zg" => 33
     *
     * @param  string $alpha
     * @return int
     */
    private static function convertAlphaVersionToIntVersion($alpha)
    {
        return strlen($alpha) * (-ord('a') + 1) + array_sum(array_map('ord', str_split($alpha)));
    }

/**
     * @param  int    $versionId
     * @return string
     */
    public static function convertLibxpmVersionId($versionId)
    {
        return self::convertVersionId($versionId, 100);
    }

/**
     * @param  int    $versionId
     * @return string
     */
    public static function convertOpenldapVersionId($versionId)
    {
        return self::convertVersionId($versionId, 100);
    }

/**
     * @param int $versionId
     * @param int $base
     *
     * @return string
     */
    private static function convertVersionId($versionId, $base)
    {
        return sprintf(
            '%d.%d.%d',
            $versionId / ($base * $base),
            (int) ($versionId / $base) % $base,
            $versionId % $base
        );
    }
}
<?php

namespace Composer\Platform;

class Runtime
{
    /**
     * @param string $constant
     * @param class-string $class
     *
     * @return bool
     */
    public function hasConstant($constant, $class = null)
    {
        return defined(ltrim($class.'::'.$constant, ':'));
    }

/**
     * @param string $constant
     * @param class-string $class
     *
     * @return mixed
     */
    public function getConstant($constant, $class = null)
    {
        return constant(ltrim($class.'::'.$constant, ':'));
    }

/**
     * @param string $fn
     *
     * @return bool
     */
    public function hasFunction($fn)
    {
        return function_exists($fn);
    }

/**
     * @param callable $callable
     * @param mixed[] $arguments
     *
     * @return mixed
     */
    public function invoke($callable, array $arguments = array())
    {
        return call_user_func_array($callable, $arguments);
    }

/**
     * @param class-string $class
     *
     * @return bool
     */
    public function hasClass($class)
    {
        return class_exists($class, false);
    }

/**
     * @param class-string $class
     * @param mixed[] $arguments
     *
     * @return object
     * @throws \ReflectionException
     */
    public function construct($class, array $arguments = array())
    {
        if (empty($arguments)) {
            return new $class;
        }

$refl = new \ReflectionClass($class);

return $refl->newInstanceArgs($arguments);
    }

/** @return string[] */
    public function getExtensions()
    {
        return get_loaded_extensions();
    }

/**
     * @param string $extension
     *
     * @return string
     */
    public function getExtensionVersion($extension)
    {
        return phpversion($extension);
    }

/**
     * @param string $extension
     *
     * @return string
     * @throws \ReflectionException
     */
    public function getExtensionInfo($extension)
    {
        $reflector = new \ReflectionExtension($extension);

ob_start();
        $reflector->info();

return ob_get_clean();
    }
}
<?php

/**
 * @param string $file
 * @return ?\Composer\Autoload\ClassLoader
 */
function includeIfExists($file)
{
    return file_exists($file) ? include $file : null;
}

if ((!$loader = includeIfExists(__DIR__.'/../vendor/autoload.php')) && (!$loader = includeIfExists(__DIR__.'/../../../autoload.php'))) {
    echo 'You must set up the project dependencies using `composer install`'.PHP_EOL.
        'See https://getcomposer.org/download/ for instructions on installing Composer'.PHP_EOL;
    exit(1);
}

return $loader;
<?php

// autoload_real.php @generated by Composer

class ComposerAutoloaderInit04114110af87f5624b3580eba43b8770
{
    private static $loader;

public static function loadClassLoader($class)
    {
        if ('Composer\Autoload\ClassLoader' === $class) {
            require __DIR__ . '/ClassLoader.php';
        }
    }

/**
     * @return \Composer\Autoload\ClassLoader
     */
    public static function getLoader()
    {
        if (null !== self::$loader) {
            return self::$loader;
        }

require __DIR__ . '/platform_check.php';

spl_autoload_register(array('ComposerAutoloaderInit04114110af87f5624b3580eba43b8770', 'loadClassLoader'), true, true);
        self::$loader = $loader = new \Composer\Autoload\ClassLoader(\dirname(\dirname(__FILE__)));
        spl_autoload_unregister(array('ComposerAutoloaderInit04114110af87f5624b3580eba43b8770', 'loadClassLoader'));

$useStaticLoader = PHP_VERSION_ID >= 50600 && !defined('HHVM_VERSION') && (!function_exists('zend_loader_file_encoded') || !zend_loader_file_encoded());
        if ($useStaticLoader) {
            require __DIR__ . '/autoload_static.php';

call_user_func(\Composer\Autoload\ComposerStaticInit04114110af87f5624b3580eba43b8770::getInitializer($loader));
        } else {
            $map = require __DIR__ . '/autoload_namespaces.php';
            foreach ($map as $namespace => $path) {
                $loader->set($namespace, $path);
            }

$map = require __DIR__ . '/autoload_psr4.php';
            foreach ($map as $namespace => $path) {
                $loader->setPsr4($namespace, $path);
            }

$classMap = require __DIR__ . '/autoload_classmap.php';
            if ($classMap) {
                $loader->addClassMap($classMap);
            }
        }

$loader->register(true);

if ($useStaticLoader) {
            $includeFiles = Composer\Autoload\ComposerStaticInit04114110af87f5624b3580eba43b8770::$files;
        } else {
            $includeFiles = require __DIR__ . '/autoload_files.php';
        }
        foreach ($includeFiles as $fileIdentifier => $file) {
            composerRequire04114110af87f5624b3580eba43b8770($fileIdentifier, $file);
        }

return $loader;
    }
}

/**
 * @param string $fileIdentifier
 * @param string $file
 * @return void
 */
function composerRequire04114110af87f5624b3580eba43b8770($fileIdentifier, $file)
{
    if (empty($GLOBALS['__composer_autoload_files'][$fileIdentifier])) {
        $GLOBALS['__composer_autoload_files'][$fileIdentifier] = true;

require $file;
    }
}
<?php

// autoload_classmap.php @generated by Composer

$vendorDir = dirname(dirname(__FILE__));
$baseDir = dirname($vendorDir);

return array(
    'Composer\\InstalledVersions' => $vendorDir . '/composer/InstalledVersions.php',
    'WP_CLI' => $vendorDir . '/wp-cli/wp-cli/php/class-wp-cli.php',
    'WP_CLI_Command' => $vendorDir . '/wp-cli/wp-cli/php/class-wp-cli-command.php',
);
<?php

/*
 * This file is part of composer/spdx-licenses.
 *
 * (c) Composer <https://github.com/composer>
 *
 * For the full copyright and license information, please view
 * the LICENSE file that was distributed with this source code.
 */

namespace Composer\Spdx;

class SpdxLicenses
{
    /** @var string */
    const LICENSES_FILE = 'spdx-licenses.json';

/** @var string */
    const EXCEPTIONS_FILE = 'spdx-exceptions.json';

/**
     * Contains all the licenses.
     *
     * The array is indexed by license identifiers, which contain
     * a numerically indexed array with license details.
     *
     *  [ lowercased license identifier =>
     *      [ 0 => identifier (string), 1 => full name (string), 2 => osi certified (bool), 3 => deprecated (bool) ]
     *    , ...
     *  ]
     *
     * @var array<string, array{0: string, 1: string, 2: bool, 3: bool}>
     */
    private $licenses;

/**
     * @var string
     */
    private $licensesExpression;

/**
     * Contains all the license exceptions.
     *
     * The array is indexed by license exception identifiers, which contain
     * a numerically indexed array with license exception details.
     *
     *  [ lowercased exception identifier =>
     *      [ 0 => exception identifier (string), 1 => full name (string) ]
     *    , ...
     *  ]
     *
     * @var array<string, array{0: string, 1: string}>
     */
    private $exceptions;

/**
     * @var string
     */
    private $exceptionsExpression;

public function __construct()
    {
        $this->loadLicenses();
        $this->loadExceptions();
    }

/**
     * Returns license metadata by license identifier.
     *
     * This function adds a link to the full license text to the license metadata.
     * The array returned is in the form of:
     *
     *  [ 0 => full name (string), 1 => osi certified, 2 => link to license text (string), 3 => deprecation status (bool) ]
     *
     * @param string $identifier
     *
     * @return array{0: string, 1: bool, 2: string, 3: bool}|null
     */
    public function getLicenseByIdentifier($identifier)
    {
        $key = strtolower($identifier);

if (!isset($this->licenses[$key])) {
            return null;
        }

list($identifier, $name, $isOsiApproved, $isDeprecatedLicenseId) = $this->licenses[$key];

return array(
            $name,
            $isOsiApproved,
            'https://spdx.org/licenses/' . $identifier . '.html#licenseText',
            $isDeprecatedLicenseId,
        );
    }

/**
     * Returns all licenses information, keyed by the lowercased license identifier.
     *
     * @return array{0: string, 1: string, 2: bool, 3: bool}[] Each item is [ 0 => identifier (string), 1 => full name (string), 2 => osi certified (bool), 3 => deprecated (bool) ]
     */
    public function getLicenses()
    {
        return $this->licenses;
    }

/**
     * Returns license exception metadata by license exception identifier.
     *
     * This function adds a link to the full license exception text to the license exception metadata.
     * The array returned is in the form of:
     *
     *  [ 0 => full name (string), 1 => link to license text (string) ]
     *
     * @param string $identifier
     *
     * @return array{0: string, 1: string}|null
     */
    public function getExceptionByIdentifier($identifier)
    {
        $key = strtolower($identifier);

if (!isset($this->exceptions[$key])) {
            return null;
        }

list($identifier, $name) = $this->exceptions[$key];

return array(
            $name,
            'https://spdx.org/licenses/' . $identifier . '.html#licenseExceptionText',
        );
    }

/**
     * Returns the short identifier of a license (or license exception) by full name.
     *
     * @param string $name
     *
     * @return string|null
     */
    public function getIdentifierByName($name)
    {
        foreach ($this->licenses as $licenseData) {
            if ($licenseData[1] === $name) {
                return $licenseData[0];
            }
        }

foreach ($this->exceptions as $licenseData) {
            if ($licenseData[1] === $name) {
                return $licenseData[0];
            }
        }

return null;
    }

/**
     * Returns the OSI Approved status for a license by identifier.
     *
     * @param string $identifier
     *
     * @return bool
     */
    public function isOsiApprovedByIdentifier($identifier)
    {
        return $this->licenses[strtolower($identifier)][2];
    }

/**
     * Returns the deprecation status for a license by identifier.
     *
     * @param string $identifier
     *
     * @return bool
     */
    public function isDeprecatedByIdentifier($identifier)
    {
        return $this->licenses[strtolower($identifier)][3];
    }

/**
     * @param string[]|string $license
     *
     * @throws \InvalidArgumentException
     *
     * @return bool
     */
    public function validate($license)
    {
        if (is_array($license)) {
            $count = count($license);
            if ($count !== count(array_filter($license, 'is_string'))) {
                throw new \InvalidArgumentException('Array of strings expected.');
            }
            $license = $count > 1  ? '(' . implode(' OR ', $license) . ')' : (string) reset($license);
        }

if (!is_string($license)) {
            throw new \InvalidArgumentException(sprintf(
                'Array or String expected, %s given.',
                gettype($license)
            ));
        }

return $this->isValidLicenseString($license);
    }

/**
     * @return string
     */
    public static function getResourcesDir()
    {
        return dirname(__DIR__) . '/res';
    }

/**
     * @return void
     */
    private function loadLicenses()
    {
        if (null !== $this->licenses) {
            return;
        }

$json = file_get_contents(self::getResourcesDir() . '/' . self::LICENSES_FILE);
        if (false === $json) {
            throw new \RuntimeException('Missing license file in ' . self::getResourcesDir() . '/' . self::LICENSES_FILE);
        }
        $this->licenses = array();

foreach (json_decode($json, true) as $identifier => $license) {
            $this->licenses[strtolower($identifier)] = array($identifier, $license[0], $license[1], $license[2]);
        }
    }

/**
     * @return void
     */
    private function loadExceptions()
    {
        if (null !== $this->exceptions) {
            return;
        }

$json = file_get_contents(self::getResourcesDir() . '/' . self::EXCEPTIONS_FILE);
        if (false === $json) {
            throw new \RuntimeException('Missing exceptions file in ' . self::getResourcesDir() . '/' . self::EXCEPTIONS_FILE);
        }
        $this->exceptions = array();

foreach (json_decode($json, true) as $identifier => $exception) {
            $this->exceptions[strtolower($identifier)] = array($identifier, $exception[0]);
        }
    }

/**
     * @return string
     */
    private function getLicensesExpression()
    {
        if (null === $this->licensesExpression) {
            $licenses = array_map('preg_quote', array_keys($this->licenses));
            rsort($licenses);
            $licenses = implode('|', $licenses);
            $this->licensesExpression = $licenses;
        }

return $this->licensesExpression;
    }

/**
     * @return string
     */
    private function getExceptionsExpression()
    {
        if (null === $this->exceptionsExpression) {
            $exceptions = array_map('preg_quote', array_keys($this->exceptions));
            rsort($exceptions);
            $exceptions = implode('|', $exceptions);
            $this->exceptionsExpression = $exceptions;
        }

return $this->exceptionsExpression;
    }

/**
     * @param string $license
     *
     * @throws \RuntimeException
     *
     * @return bool
     */
    private function isValidLicenseString($license)
    {
        if (isset($this->licenses[strtolower($license)])) {
            return true;
        }

$licenses = $this->getLicensesExpression();
        $exceptions = $this->getExceptionsExpression();

$regex = <<<REGEX
{
(?(DEFINE)
    # idstring: 1*( ALPHA / DIGIT / - / . )
    (?<idstring>[\pL\pN.-]{1,})

# license-id: taken from list
    (?<licenseid>${licenses})

# license-exception-id: taken from list
    (?<licenseexceptionid>${exceptions})

# license-ref: [DocumentRef-1*(idstring):]LicenseRef-1*(idstring)
    (?<licenseref>(?:DocumentRef-(?&idstring):)?LicenseRef-(?&idstring))

# simple-expresssion: license-id / license-id+ / license-ref
    (?<simple_expression>(?&licenseid)\+? | (?&licenseid) | (?&licenseref))

# compound-expression: 1*(
    #   simple-expression /
    #   simple-expression WITH license-exception-id /
    #   compound-expression AND compound-expression /
    #   compound-expression OR compound-expression
    # ) / ( compound-expression ) )
    (?<compound_head>
        (?&simple_expression) ( \s+ WITH \s+ (?&licenseexceptionid))?
            | $ \s* (?&compound_expression) \s* $
    )
    (?<compound_expression>
        (?&compound_head) (?: \s+ (?:AND|OR) \s+ (?&compound_expression))?
    )

# license-expression: 1*1(simple-expression / compound-expression)
    (?<license_expression>(?&compound_expression) | (?&simple_expression))
) # end of define

^(NONE | NOASSERTION | (?&license_expression))$
}xi
REGEX;

$match = preg_match($regex, $license);

if (0 === $match) {
            return false;
        }

if (false === $match) {
            throw new \RuntimeException('Regex failed to compile/run.');
        }

return true;
    }
}
<?php

/*
 * This file is part of composer/ca-bundle.
 *
 * (c) Composer <https://github.com/composer>
 *
 * For the full copyright and license information, please view
 * the LICENSE file that was distributed with this source code.
 */

namespace Composer\CaBundle;

use Psr\Log\LoggerInterface;
use Symfony\Component\Process\PhpProcess;

/**
 * @author Chris Smith <chris@cs278.org>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class CaBundle
{
    /** @var string|null */
    private static $caPath;
    /** @var array<string, bool> */
    private static $caFileValidity = array();
    /** @var bool|null */
    private static $useOpensslParse;

/**
     * Returns the system CA bundle path, or a path to the bundled one
     *
     * This method was adapted from Sslurp.
     * https://github.com/EvanDotPro/Sslurp
     *
     * (c) Evan Coury <me@evancoury.com>
     *
     * For the full copyright and license information, please see below:
     *
     * Copyright (c) 2013, Evan Coury
     * All rights reserved.
     *
     * Redistribution and use in source and binary forms, with or without modification,
     * are permitted provided that the following conditions are met:
     *
     *     * Redistributions of source code must retain the above copyright notice,
     *       this list of conditions and the following disclaimer.
     *
     *     * Redistributions in binary form must reproduce the above copyright notice,
     *       this list of conditions and the following disclaimer in the documentation
     *       and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
     * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
     * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     *
     * @param  LoggerInterface $logger optional logger for information about which CA files were loaded
     * @return string          path to a CA bundle file or directory
     */
    public static function getSystemCaRootBundlePath(LoggerInterface $logger = null)
    {
        if (self::$caPath !== null) {
            return self::$caPath;
        }
        $caBundlePaths = array();

// If SSL_CERT_FILE env variable points to a valid certificate/bundle, use that.
        // This mimics how OpenSSL uses the SSL_CERT_FILE env variable.
        $caBundlePaths[] = self::getEnvVariable('SSL_CERT_FILE');

// If SSL_CERT_DIR env variable points to a valid certificate/bundle, use that.
        // This mimics how OpenSSL uses the SSL_CERT_FILE env variable.
        $caBundlePaths[] = self::getEnvVariable('SSL_CERT_DIR');

$caBundlePaths[] = ini_get('openssl.cafile');
        $caBundlePaths[] = ini_get('openssl.capath');

$otherLocations = array(
            '/etc/pki/tls/certs/ca-bundle.crt', // Fedora, RHEL, CentOS (ca-certificates package)
            '/etc/ssl/certs/ca-certificates.crt', // Debian, Ubuntu, Gentoo, Arch Linux (ca-certificates package)
            '/etc/ssl/ca-bundle.pem', // SUSE, openSUSE (ca-certificates package)
            '/usr/local/share/certs/ca-root-nss.crt', // FreeBSD (ca_root_nss_package)
            '/usr/ssl/certs/ca-bundle.crt', // Cygwin
            '/opt/local/share/curl/curl-ca-bundle.crt', // OS X macports, curl-ca-bundle package
            '/usr/local/share/curl/curl-ca-bundle.crt', // Default cURL CA bunde path (without --with-ca-bundle option)
            '/usr/share/ssl/certs/ca-bundle.crt', // Really old RedHat?
            '/etc/ssl/cert.pem', // OpenBSD
            '/usr/local/etc/ssl/cert.pem', // FreeBSD 10.x
            '/usr/local/etc/openssl/cert.pem', // OS X homebrew, openssl package
            '/usr/local/etc/openssl@1.1/cert.pem', // OS X homebrew, openssl@1.1 package
        );

foreach($otherLocations as $location) {
            $otherLocations[] = dirname($location);
        }

$caBundlePaths = array_merge($caBundlePaths, $otherLocations);

foreach ($caBundlePaths as $caBundle) {
            if ($caBundle && self::caFileUsable($caBundle, $logger)) {
                return self::$caPath = $caBundle;
            }

if ($caBundle && self::caDirUsable($caBundle, $logger)) {
                return self::$caPath = $caBundle;
            }
        }

return self::$caPath = static::getBundledCaBundlePath(); // Bundled CA file, last resort
    }

/**
     * Returns the path to the bundled CA file
     *
     * In case you don't want to trust the user or the system, you can use this directly
     *
     * @return string path to a CA bundle file
     */
    public static function getBundledCaBundlePath()
    {
        $caBundleFile = __DIR__.'/../res/cacert.pem';

// cURL does not understand 'phar://' paths
        // see https://github.com/composer/ca-bundle/issues/10
        if (0 === strpos($caBundleFile, 'phar://')) {
            $tempCaBundleFile = tempnam(sys_get_temp_dir(), 'openssl-ca-bundle-');
            if (false === $tempCaBundleFile) {
                throw new \RuntimeException('Could not create a temporary file to store the bundled CA file');
            }

file_put_contents(
                $tempCaBundleFile,
                file_get_contents($caBundleFile)
            );

register_shutdown_function(function() use ($tempCaBundleFile) {
                @unlink($tempCaBundleFile);
            });

$caBundleFile = $tempCaBundleFile;
        }

return $caBundleFile;
    }

/**
     * Validates a CA file using opensl_x509_parse only if it is safe to use
     *
     * @param string          $filename
     * @param LoggerInterface $logger   optional logger for information about which CA files were loaded
     *
     * @return bool
     */
    public static function validateCaFile($filename, LoggerInterface $logger = null)
    {
        static $warned = false;

if (isset(self::$caFileValidity[$filename])) {
            return self::$caFileValidity[$filename];
        }

$contents = file_get_contents($filename);

// assume the CA is valid if php is vulnerable to
        // https://www.sektioneins.de/advisories/advisory-012013-php-openssl_x509_parse-memory-corruption-vulnerability.html
        if (!static::isOpensslParseSafe()) {
            if (!$warned && $logger) {
                $logger->warning(sprintf(
                    'Your version of PHP, %s, is affected by CVE-2013-6420 and cannot safely perform certificate validation, we strongly suggest you upgrade.',
                    PHP_VERSION
                ));
                $warned = true;
            }

$isValid = !empty($contents);
        } elseif (is_string($contents) && strlen($contents) > 0) {
            $contents = preg_replace("/^(\\-+(?:BEGIN|END))\\s+TRUSTED\\s+(CERTIFICATE\\-+)\$/m", '$1 $2', $contents);
            if (null === $contents) {
                // regex extraction failed
                $isValid = false;
            } else {
                $isValid = (bool) openssl_x509_parse($contents);
            }
        } else {
            $isValid = false;
        }

if ($logger) {
            $logger->debug('Checked CA file '.realpath($filename).': '.($isValid ? 'valid' : 'invalid'));
        }

return self::$caFileValidity[$filename] = $isValid;
    }

if (PHP_VERSION_ID >= 50600) {
            return self::$useOpensslParse = true;
        }

// Vulnerable:
        // PHP 5.3.0 - PHP 5.3.27
        // PHP 5.4.0 - PHP 5.4.22
        // PHP 5.5.0 - PHP 5.5.6
        if (
               (PHP_VERSION_ID < 50400 && PHP_VERSION_ID >= 50328)
            || (PHP_VERSION_ID < 50500 && PHP_VERSION_ID >= 50423)
            || PHP_VERSION_ID >= 50507
        ) {
            // This version of PHP has the fix for CVE-2013-6420 applied.
            return self::$useOpensslParse = true;
        }

if (defined('PHP_WINDOWS_VERSION_BUILD')) {
            // Windows is probably insecure in this case.
            return self::$useOpensslParse = false;
        }

$compareDistroVersionPrefix = function ($prefix, $fixedVersion) {
            $regex = '{^'.preg_quote($prefix).'([0-9]+)$}';

if (preg_match($regex, PHP_VERSION, $m)) {
                return ((int) $m[1]) >= $fixedVersion;
            }

return false;
        };

// Hard coded list of PHP distributions with the fix backported.
        if (
            $compareDistroVersionPrefix('5.3.3-7+squeeze', 18) // Debian 6 (Squeeze)
            || $compareDistroVersionPrefix('5.4.4-14+deb7u', 7) // Debian 7 (Wheezy)
            || $compareDistroVersionPrefix('5.3.10-1ubuntu3.', 9) // Ubuntu 12.04 (Precise)
        ) {
            return self::$useOpensslParse = true;
        }

// Symfony Process component is missing so we assume it is unsafe at this point
        if (!class_exists('Symfony\Component\Process\PhpProcess')) {
            return self::$useOpensslParse = false;
        }

// This is where things get crazy, because distros backport security
        // fixes the chances are on NIX systems the fix has been applied but
        // it's not possible to verify that from the PHP version.
        //
        // To verify exec a new PHP process and run the issue testcase with
        // known safe input that replicates the bug.

// Based on testcase in https://github.com/php/php-src/commit/c1224573c773b6845e83505f717fbf820fc18415
        // changes in https://github.com/php/php-src/commit/76a7fd893b7d6101300cc656058704a73254d593
        $cert = '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';
        $script = <<<'EOT'

error_reporting(-1);
$info = openssl_x509_parse(base64_decode('%s'));
var_dump(PHP_VERSION, $info['issuer']['emailAddress'], $info['validFrom_time_t']);

EOT;
        $script = '<'."?php\n".sprintf($script, $cert);

try {
            $process = new PhpProcess($script);
            $process->mustRun();
        } catch (\Exception $e) {
            // In the case of any exceptions just accept it is not possible to
            // determine the safety of openssl_x509_parse and bail out.
            return self::$useOpensslParse = false;
        }

$output = preg_split('{\r?\n}', trim($process->getOutput()));
        $errorOutput = trim($process->getErrorOutput());

if (
            is_array($output)
            && count($output) === 3
            && $output[0] === sprintf('string(%d) "%s"', strlen(PHP_VERSION), PHP_VERSION)
            && $output[1] === 'string(27) "stefan.esser@sektioneins.de"'
            && $output[2] === 'int(-1)'
            && preg_match('{openssl_x509_parse: illegal (?:ASN1 data type for|length in) timestamp in - on line \d+}', $errorOutput)
        ) {
            // This PHP has the fix backported probably by a distro security team.
            return self::$useOpensslParse = true;
        }

return self::$useOpensslParse = false;
    }

/**
     * Resets the static caches
     * @return void
     */
    public static function reset()
    {
        self::$caFileValidity = array();
        self::$caPath = null;
        self::$useOpensslParse = null;
    }

/**
     * @param  string $name
     * @return string|false
     */
    private static function getEnvVariable($name)
    {
        if (isset($_SERVER[$name])) {
            return (string) $_SERVER[$name];
        }

if (PHP_SAPI === 'cli' && ($value = getenv($name)) !== false && $value !== null) {
            return (string) $value;
        }

return false;
    }

/**
     * @param  string|false $certFile
     * @param  LoggerInterface|null $logger
     * @return bool
     */
    private static function caFileUsable($certFile, LoggerInterface $logger = null)
    {
        return $certFile
            && static::isFile($certFile, $logger)
            && static::isReadable($certFile, $logger)
            && static::validateCaFile($certFile, $logger);
    }

/**
     * @param  string|false $certDir
     * @param  LoggerInterface|null $logger
     * @return bool
     */
    private static function caDirUsable($certDir, LoggerInterface $logger = null)
    {
        return $certDir
            && static::isDir($certDir, $logger)
            && static::isReadable($certDir, $logger)
            && static::glob($certDir . '/*', $logger);
    }

/**
     * @param  string $certFile
     * @param  LoggerInterface|null $logger
     * @return bool
     */
    private static function isFile($certFile, LoggerInterface $logger = null)
    {
        $isFile = @is_file($certFile);
        if (!$isFile && $logger) {
            $logger->debug(sprintf('Checked CA file %s does not exist or it is not a file.', $certFile));
        }

return $isFile;
    }

/**
     * @param  string $certDir
     * @param  LoggerInterface|null $logger
     * @return bool
     */
    private static function isDir($certDir, LoggerInterface $logger = null)
    {
        $isDir = @is_dir($certDir);
        if (!$isDir && $logger) {
            $logger->debug(sprintf('Checked directory %s does not exist or it is not a directory.', $certDir));
        }

return $isDir;
    }

/**
     * @param  string $certFileOrDir
     * @param  LoggerInterface|null $logger
     * @return bool
     */
    private static function isReadable($certFileOrDir, LoggerInterface $logger = null)
    {
        $isReadable = @is_readable($certFileOrDir);
        if (!$isReadable && $logger) {
            $logger->debug(sprintf('Checked file or directory %s is not readable.', $certFileOrDir));
        }

return $isReadable;
    }

/**
     * @param  string $pattern
     * @param  LoggerInterface|null $logger
     * @return bool
     */
    private static function glob($pattern, LoggerInterface $logger = null)
    {
        $certs = glob($pattern);
        if ($certs === false) {
            if ($logger) {
                $logger->debug(sprintf("An error occurred while trying to find certificates for pattern: %s", $pattern));
            }
            return false;
        }

if (count($certs) === 0) {
            if ($logger) {
                $logger->debug(sprintf("No CA files found for pattern: %s", $pattern));
            }
            return false;
        }

return true;
    }
}
<?php return array(
    'root' => array(
        'pretty_version' => 'dev-release-2-6-0',
        'version' => 'dev-release-2-6-0',
        'type' => 'library',
        'install_path' => __DIR__ . '/../../',
        'aliases' => array(),
        'reference' => '19712f1a5e20612a75512d2f418cde455adc5125',
        'name' => 'wp-cli/wp-cli-bundle',
        'dev' => false,
    ),
    'versions' => array(
        'composer/ca-bundle' => array(
            'pretty_version' => '1.3.1',
            'version' => '1.3.1.0',
            'type' => 'library',
            'install_path' => __DIR__ . '/./ca-bundle',
            'aliases' => array(),
            'reference' => '4c679186f2aca4ab6a0f1b0b9cf9252decb44d0b',
            'dev_requirement' => false,
        ),
        'composer/composer' => array(
            'pretty_version' => '2.2.5',
            'version' => '2.2.5.0',
            'type' => 'library',
            'install_path' => __DIR__ . '/./composer',
            'aliases' => array(),
            'reference' => '22c41ef275c7bb64fa28fb2c0871a39666832cb9',
            'dev_requirement' => false,
        ),
        'composer/metadata-minifier' => array(
            'pretty_version' => '1.0.0',
            'version' => '1.0.0.0',
            'type' => 'library',
            'install_path' => __DIR__ . '/./metadata-minifier',
            'aliases' => array(),
            'reference' => 'c549d23829536f0d0e984aaabbf02af91f443207',
            'dev_requirement' => false,
        ),
        'composer/pcre' => array(
            'pretty_version' => '1.0.1',
            'version' => '1.0.1.0',
            'type' => 'library',
            'install_path' => __DIR__ . '/./pcre',
            'aliases' => array(),
            'reference' => '67a32d7d6f9f560b726ab25a061b38ff3a80c560',
            'dev_requirement' => false,
        ),
        'composer/semver' => array(
            'pretty_version' => '3.2.7',
            'version' => '3.2.7.0',
            'type' => 'library',
            'install_path' => __DIR__ . '/./semver',
            'aliases' => array(),
            'reference' => 'deac27056b57e46faf136fae7b449eeaa71661ee',
            'dev_requirement' => false,
        ),
        'composer/spdx-licenses' => array(
            'pretty_version' => '1.5.6',
            'version' => '1.5.6.0',
            'type' => 'library',
            'install_path' => __DIR__ . '/./spdx-licenses',
            'aliases' => array(),
            'reference' => 'a30d487169d799745ca7280bc90fdfa693536901',
            'dev_requirement' => false,
        ),
        'composer/xdebug-handler' => array(
            'pretty_version' => '2.0.4',
            'version' => '2.0.4.0',
            'type' => 'library',
            'install_path' => __DIR__ . '/./xdebug-handler',
            'aliases' => array(),
            'reference' => '0c1a3925ec58a4ec98e992b9c7d171e9e184be0a',
            'dev_requirement' => false,
        ),
        'gettext/gettext' => array(
            'pretty_version' => 'v4.8.6',
            'version' => '4.8.6.0',
            'type' => 'library',
            'install_path' => __DIR__ . '/../gettext/gettext',
            'aliases' => array(),
            'reference' => 'bbeb8f4d3077663739aecb4551b22e720c0e9efe',
            'dev_requirement' => false,
        ),
        'gettext/languages' => array(
            'pretty_version' => '2.9.0',
            'version' => '2.9.0.0',
            'type' => 'library',
            'install_path' => __DIR__ . '/../gettext/languages',
            'aliases' => array(),
            'reference' => 'ed56dd2c7f4024cc953ed180d25f02f2640e3ffa',
            'dev_requirement' => false,
        ),
        'justinrainbow/json-schema' => array(
            'pretty_version' => '5.2.11',
            'version' => '5.2.11.0',
            'type' => 'library',
            'install_path' => __DIR__ . '/../justinrainbow/json-schema',
            'aliases' => array(),
            'reference' => '2ab6744b7296ded80f8cc4f9509abbff393399aa',
            'dev_requirement' => false,
        ),
        'mck89/peast' => array(
            'pretty_version' => 'v1.13.11',
            'version' => '1.13.11.0',
            'type' => 'library',
            'install_path' => __DIR__ . '/../mck89/peast',
            'aliases' => array(),
            'reference' => '78c57966f3da5f223636ea0417d71ac6ff61e47f',
            'dev_requirement' => false,
        ),
        'mustache/mustache' => array(
            'pretty_version' => 'v2.14.1',
            'version' => '2.14.1.0',
            'type' => 'library',
            'install_path' => __DIR__ . '/../mustache/mustache',
            'aliases' => array(),
            'reference' => '579ffa5c96e1d292c060b3dd62811ff01ad8c24e',
            'dev_requirement' => false,
        ),
        'nb/oxymel' => array(
            'pretty_version' => 'v0.1.0',
            'version' => '0.1.0.0',
            'type' => 'library',
            'install_path' => __DIR__ . '/../nb/oxymel',
            'aliases' => array(),
            'reference' => 'cbe626ef55d5c4cc9b5e6e3904b395861ea76e3c',
            'dev_requirement' => false,
        ),
        'psr/log' => array(
            'pretty_version' => '1.1.4',
            'version' => '1.1.4.0',
            'type' => 'library',
            'install_path' => __DIR__ . '/../psr/log',
            'aliases' => array(),
            'reference' => 'd49695b909c3b7628b6289db5479a1c204601f11',
            'dev_requirement' => false,
        ),
        'psr/log-implementation' => array(
            'dev_requirement' => false,
            'provided' => array(
                0 => '1.0',
            ),
        ),
        'react/promise' => array(
            'pretty_version' => 'v2.8.0',
            'version' => '2.8.0.0',
            'type' => 'library',
            'install_path' => __DIR__ . '/../react/promise',
            'aliases' => array(),
            'reference' => 'f3cff96a19736714524ca0dd1d4130de73dbbbc4',
            'dev_requirement' => false,
        ),
        'rmccue/requests' => array(
            'pretty_version' => 'v1.8.1',
            'version' => '1.8.1.0',
            'type' => 'library',
            'install_path' => __DIR__ . '/../rmccue/requests',
            'aliases' => array(),
            'reference' => '82e6936366eac3af4d836c18b9d8c31028fe4cd5',
            'dev_requirement' => false,
        ),
        'seld/jsonlint' => array(
            'pretty_version' => '1.8.3',
            'version' => '1.8.3.0',
            'type' => 'library',
            'install_path' => __DIR__ . '/../seld/jsonlint',
            'aliases' => array(),
            'reference' => '9ad6ce79c342fbd44df10ea95511a1b24dee5b57',
            'dev_requirement' => false,
        ),
        'seld/phar-utils' => array(
            'pretty_version' => '1.2.0',
            'version' => '1.2.0.0',
            'type' => 'library',
            'install_path' => __DIR__ . '/../seld/phar-utils',
            'aliases' => array(),
            'reference' => '9f3452c93ff423469c0d56450431562ca423dcee',
            'dev_requirement' => false,
        ),
        'symfony/console' => array(
            'pretty_version' => 'v3.4.47',
            'version' => '3.4.47.0',
            'type' => 'library',
            'install_path' => __DIR__ . '/../symfony/console',
            'aliases' => array(),
            'reference' => 'a10b1da6fc93080c180bba7219b5ff5b7518fe81',
            'dev_requirement' => false,
        ),
        'symfony/debug' => array(
            'pretty_version' => 'v3.4.47',
            'version' => '3.4.47.0',
            'type' => 'library',
            'install_path' => __DIR__ . '/../symfony/debug',
            'aliases' => array(),
            'reference' => 'ab42889de57fdfcfcc0759ab102e2fd4ea72dcae',
            'dev_requirement' => false,
        ),
        'symfony/filesystem' => array(
            'pretty_version' => 'v3.4.47',
            'version' => '3.4.47.0',
            'type' => 'library',
            'install_path' => __DIR__ . '/../symfony/filesystem',
            'aliases' => array(),
            'reference' => 'e58d7841cddfed6e846829040dca2cca0ebbbbb3',
            'dev_requirement' => false,
        ),
        'symfony/finder' => array(
            'pretty_version' => 'v3.4.47',
            'version' => '3.4.47.0',
            'type' => 'library',
            'install_path' => __DIR__ . '/../symfony/finder',
            'aliases' => array(),
            'reference' => 'b6b6ad3db3edb1b4b1c1896b1975fb684994de6e',
            'dev_requirement' => false,
        ),
        'symfony/polyfill-ctype' => array(
            'pretty_version' => 'v1.19.0',
            'version' => '1.19.0.0',
            'type' => 'library',
            'install_path' => __DIR__ . '/../symfony/polyfill-ctype',
            'aliases' => array(),
            'reference' => 'aed596913b70fae57be53d86faa2e9ef85a2297b',
            'dev_requirement' => false,
        ),
        'symfony/polyfill-mbstring' => array(
            'pretty_version' => 'v1.19.0',
            'version' => '1.19.0.0',
            'type' => 'library',
            'install_path' => __DIR__ . '/../symfony/polyfill-mbstring',
            'aliases' => array(),
            'reference' => 'b5f7b932ee6fa802fc792eabd77c4c88084517ce',
            'dev_requirement' => false,
        ),
        'symfony/process' => array(
            'pretty_version' => 'v3.4.47',
            'version' => '3.4.47.0',
            'type' => 'library',
            'install_path' => __DIR__ . '/../symfony/process',
            'aliases' => array(),
            'reference' => 'b8648cf1d5af12a44a51d07ef9bf980921f15fca',
            'dev_requirement' => false,
        ),
        'wp-cli/cache-command' => array(
            'pretty_version' => 'v2.0.9',
            'version' => '2.0.9.0',
            'type' => 'wp-cli-package',
            'install_path' => __DIR__ . '/../wp-cli/cache-command',
            'aliases' => array(),
            'reference' => '05378440d8c6d4d2a1a5e5cbc1ba92a5e4bf1c40',
            'dev_requirement' => false,
        ),
        'wp-cli/checksum-command' => array(
            'pretty_version' => 'v2.1.2',
            'version' => '2.1.2.0',
            'type' => 'wp-cli-package',
            'install_path' => __DIR__ . '/../wp-cli/checksum-command',
            'aliases' => array(),
            'reference' => 'ec59a24af2ca97b770a4709b0a1c241eeb4b4cff',
            'dev_requirement' => false,
        ),
        'wp-cli/config-command' => array(
            'pretty_version' => 'v2.1.3',
            'version' => '2.1.3.0',
            'type' => 'wp-cli-package',
            'install_path' => __DIR__ . '/../wp-cli/config-command',
            'aliases' => array(),
            'reference' => 'cdabbc47dae464a93b10361b9a18e84cf4e72fe2',
            'dev_requirement' => false,
        ),
        'wp-cli/core-command' => array(
            'pretty_version' => 'v2.1.1',
            'version' => '2.1.1.0',
            'type' => 'wp-cli-package',
            'install_path' => __DIR__ . '/../wp-cli/core-command',
            'aliases' => array(),
            'reference' => 'a75d052ea000b4f0ec14106c110836b376e95a4f',
            'dev_requirement' => false,
        ),
        'wp-cli/cron-command' => array(
            'pretty_version' => 'v2.1.0',
            'version' => '2.1.0.0',
            'type' => 'wp-cli-package',
            'install_path' => __DIR__ . '/../wp-cli/cron-command',
            'aliases' => array(),
            'reference' => 'bb9fd9645e9a5276d024a59affeda3e6aa8530be',
            'dev_requirement' => false,
        ),
        'wp-cli/db-command' => array(
            'pretty_version' => 'v2.0.20',
            'version' => '2.0.20.0',
            'type' => 'wp-cli-package',
            'install_path' => __DIR__ . '/../wp-cli/db-command',
            'aliases' => array(),
            'reference' => '709f58c30d178afcdecaf56068ca9f5e985ed6b9',
            'dev_requirement' => false,
        ),
        'wp-cli/embed-command' => array(
            'pretty_version' => 'v2.0.11',
            'version' => '2.0.11.0',
            'type' => 'wp-cli-package',
            'install_path' => __DIR__ . '/../wp-cli/embed-command',
            'aliases' => array(),
            'reference' => '00a901a66aecb4da94a8dace610eb1135fc82386',
            'dev_requirement' => false,
        ),
        'wp-cli/entity-command' => array(
            'pretty_version' => 'v2.2.1',
            'version' => '2.2.1.0',
            'type' => 'wp-cli-package',
            'install_path' => __DIR__ . '/../wp-cli/entity-command',
            'aliases' => array(),
            'reference' => 'd7d08b05c67651abde5d570851e46498a164cb34',
            'dev_requirement' => false,
        ),
        'wp-cli/eval-command' => array(
            'pretty_version' => 'v2.1.2',
            'version' => '2.1.2.0',
            'type' => 'wp-cli-package',
            'install_path' => __DIR__ . '/../wp-cli/eval-command',
            'aliases' => array(),
            'reference' => '5213040ec2167b2748f2689ff6fe24b92a064a90',
            'dev_requirement' => false,
        ),
        'wp-cli/export-command' => array(
            'pretty_version' => 'v2.0.11',
            'version' => '2.0.11.0',
            'type' => 'wp-cli-package',
            'install_path' => __DIR__ . '/../wp-cli/export-command',
            'aliases' => array(),
            'reference' => '8dd137e0c739a59bb3d3de684a219dbb34473e11',
            'dev_requirement' => false,
        ),
        'wp-cli/extension-command' => array(
            'pretty_version' => 'v2.1.4',
            'version' => '2.1.4.0',
            'type' => 'wp-cli-package',
            'install_path' => __DIR__ . '/../wp-cli/extension-command',
            'aliases' => array(),
            'reference' => '6401d7ea51084fac40010c2fb305be640675f385',
            'dev_requirement' => false,
        ),
        'wp-cli/i18n-command' => array(
            'pretty_version' => 'v2.2.13',
            'version' => '2.2.13.0',
            'type' => 'wp-cli-package',
            'install_path' => __DIR__ . '/../wp-cli/i18n-command',
            'aliases' => array(),
            'reference' => '77ece9e2c914bb56ea72b9ee9f00556dece07b3f',
            'dev_requirement' => false,
        ),
        'wp-cli/import-command' => array(
            'pretty_version' => 'v2.0.8',
            'version' => '2.0.8.0',
            'type' => 'wp-cli-package',
            'install_path' => __DIR__ . '/../wp-cli/import-command',
            'aliases' => array(),
            'reference' => 'a092e3abcca843f1fabf2e9b706a912ae075355f',
            'dev_requirement' => false,
        ),
        'wp-cli/language-command' => array(
            'pretty_version' => 'v2.0.12',
            'version' => '2.0.12.0',
            'type' => 'wp-cli-package',
            'install_path' => __DIR__ . '/../wp-cli/language-command',
            'aliases' => array(),
            'reference' => 'bbdba69179fc8df597928587111500c8ade40a38',
            'dev_requirement' => false,
        ),
        'wp-cli/maintenance-mode-command' => array(
            'pretty_version' => 'v2.0.8',
            'version' => '2.0.8.0',
            'type' => 'wp-cli-package',
            'install_path' => __DIR__ . '/../wp-cli/maintenance-mode-command',
            'aliases' => array(),
            'reference' => 'e65505c973ea9349257a4f33ac9edc78db0b189a',
            'dev_requirement' => false,
        ),
        'wp-cli/media-command' => array(
            'pretty_version' => 'v2.0.12',
            'version' => '2.0.12.0',
            'type' => 'wp-cli-package',
            'install_path' => __DIR__ . '/../wp-cli/media-command',
            'aliases' => array(),
            'reference' => '7cbf32c7fa68631619f85a9bea0fb80fca119ba6',
            'dev_requirement' => false,
        ),
        'wp-cli/mustangostang-spyc' => array(
            'pretty_version' => '0.6.3',
            'version' => '0.6.3.0',
            'type' => 'library',
            'install_path' => __DIR__ . '/../wp-cli/mustangostang-spyc',
            'aliases' => array(),
            'reference' => '6aa0b4da69ce9e9a2c8402dab8d43cf32c581cc7',
            'dev_requirement' => false,
        ),
        'wp-cli/package-command' => array(
            'pretty_version' => 'v2.2.2',
            'version' => '2.2.2.0',
            'type' => 'wp-cli-package',
            'install_path' => __DIR__ . '/../wp-cli/package-command',
            'aliases' => array(),
            'reference' => '36afdee21d022e6270867aa0cbfef6f453041814',
            'dev_requirement' => false,
        ),
        'wp-cli/php-cli-tools' => array(
            'pretty_version' => 'v0.11.13',
            'version' => '0.11.13.0',
            'type' => 'library',
            'install_path' => __DIR__ . '/../wp-cli/php-cli-tools',
            'aliases' => array(),
            'reference' => 'a2866855ac1abc53005c102e901553ad5772dc04',
            'dev_requirement' => false,
        ),
        'wp-cli/rewrite-command' => array(
            'pretty_version' => 'v2.0.10',
            'version' => '2.0.10.0',
            'type' => 'wp-cli-package',
            'install_path' => __DIR__ . '/../wp-cli/rewrite-command',
            'aliases' => array(),
            'reference' => '562a0a5a0d51be000de87d7a8a870de13383ecd6',
            'dev_requirement' => false,
        ),
        'wp-cli/role-command' => array(
            'pretty_version' => 'v2.0.9',
            'version' => '2.0.9.0',
            'type' => 'wp-cli-package',
            'install_path' => __DIR__ . '/../wp-cli/role-command',
            'aliases' => array(),
            'reference' => '9abd93952565935084160bc3be49dfb2483bb0b6',
            'dev_requirement' => false,
        ),
        'wp-cli/scaffold-command' => array(
            'pretty_version' => 'v2.0.16',
            'version' => '2.0.16.0',
            'type' => 'wp-cli-package',
            'install_path' => __DIR__ . '/../wp-cli/scaffold-command',
            'aliases' => array(),
            'reference' => '6d92fb363b8ed7473af7f12cf342aaf9d2c96e81',
            'dev_requirement' => false,
        ),
        'wp-cli/search-replace-command' => array(
            'pretty_version' => 'v2.0.16',
            'version' => '2.0.16.0',
            'type' => 'wp-cli-package',
            'install_path' => __DIR__ . '/../wp-cli/search-replace-command',
            'aliases' => array(),
            'reference' => 'dbf21560fd91710b2900f5631448657d28f2b380',
            'dev_requirement' => false,
        ),
        'wp-cli/server-command' => array(
            'pretty_version' => 'v2.0.10',
            'version' => '2.0.10.0',
            'type' => 'wp-cli-package',
            'install_path' => __DIR__ . '/../wp-cli/server-command',
            'aliases' => array(),
            'reference' => '50c81f45f1cf09bc0a52e3582b3e56d27ca3c33c',
            'dev_requirement' => false,
        ),
        'wp-cli/shell-command' => array(
            'pretty_version' => 'v2.0.11',
            'version' => '2.0.11.0',
            'type' => 'wp-cli-package',
            'install_path' => __DIR__ . '/../wp-cli/shell-command',
            'aliases' => array(),
            'reference' => '28a7de3134c9f059900d8fa4aea1d7d618481454',
            'dev_requirement' => false,
        ),
        'wp-cli/super-admin-command' => array(
            'pretty_version' => 'v2.0.10',
            'version' => '2.0.10.0',
            'type' => 'wp-cli-package',
            'install_path' => __DIR__ . '/../wp-cli/super-admin-command',
            'aliases' => array(),
            'reference' => 'e6707f3acfff089d19c5c55bba0fd66cd7d6c2fa',
            'dev_requirement' => false,
        ),
        'wp-cli/widget-command' => array(
            'pretty_version' => 'v2.1.7',
            'version' => '2.1.7.0',
            'type' => 'wp-cli-package',
            'install_path' => __DIR__ . '/../wp-cli/widget-command',
            'aliases' => array(),
            'reference' => '6aedab77f1cd2a0f511b62110c244c32b84dd429',
            'dev_requirement' => false,
        ),
        'wp-cli/wp-cli' => array(
            'pretty_version' => 'v2.6.0',
            'version' => '2.6.0.0',
            'type' => 'library',
            'install_path' => __DIR__ . '/../wp-cli/wp-cli',
            'aliases' => array(),
            'reference' => 'dee13c2baf6bf972484a63f8b8dab48f7220f095',
            'dev_requirement' => false,
        ),
        'wp-cli/wp-cli-bundle' => array(
            'pretty_version' => 'dev-release-2-6-0',
            'version' => 'dev-release-2-6-0',
            'type' => 'library',
            'install_path' => __DIR__ . '/../../',
            'aliases' => array(),
            'reference' => '19712f1a5e20612a75512d2f418cde455adc5125',
            'dev_requirement' => false,
        ),
        'wp-cli/wp-config-transformer' => array(
            'pretty_version' => 'v1.3.0',
            'version' => '1.3.0.0',
            'type' => 'library',
            'install_path' => __DIR__ . '/../wp-cli/wp-config-transformer',
            'aliases' => array(),
            'reference' => '2e90eefc6b8f5166f53aa5414fd8f1a572164ef1',
            'dev_requirement' => false,
        ),
    ),
);
<?php

/*
 * This file is part of composer/xdebug-handler.
 *
 * (c) Composer <https://github.com/composer>
 *
 * For the full copyright and license information, please view
 * the LICENSE file that was distributed with this source code.
 */

namespace Composer\XdebugHandler;

use Psr\Log\LoggerInterface;
use Psr\Log\LogLevel;

/**
 * @author John Stevenson <john-stevenson@blueyonder.co.uk>
 * @internal
 */
class Status
{
    const ENV_RESTART = 'XDEBUG_HANDLER_RESTART';
    const CHECK = 'Check';
    const ERROR = 'Error';
    const INFO = 'Info';
    const NORESTART = 'NoRestart';
    const RESTART = 'Restart';
    const RESTARTING = 'Restarting';
    const RESTARTED = 'Restarted';

/** @var bool */
    private $debug;

/** @var string */
    private $envAllowXdebug;

/** @var string|null */
    private $loaded;

/** @var LoggerInterface|null */
    private $logger;

/** @var bool */
    private $modeOff;

/** @var float */
    private $time;

/**
     * Constructor
     *
     * @param string $envAllowXdebug Prefixed _ALLOW_XDEBUG name
     * @param bool $debug Whether debug output is required
     */
    public function __construct($envAllowXdebug, $debug)
    {
        $start = getenv(self::ENV_RESTART);
        Process::setEnv(self::ENV_RESTART);
        $this->time = is_numeric($start) ? round((microtime(true) - $start) * 1000) : 0;

$this->envAllowXdebug = $envAllowXdebug;
        $this->debug = $debug && defined('STDERR');
        $this->modeOff = false;
    }

/**
     * @param LoggerInterface $logger
     *
     * @return void
     */
    public function setLogger(LoggerInterface $logger)
    {
        $this->logger = $logger;
    }

/**
     * Calls a handler method to report a message
     *
     * @param string $op The handler constant
     * @param null|string $data Data required by the handler
     *
     * @return void
     * @throws \InvalidArgumentException If $op is not known
     */
    public function report($op, $data)
    {
        if ($this->logger !== null || $this->debug) {
            $callable = array($this, 'report'.$op);

if (!is_callable($callable)) {
                throw new \InvalidArgumentException('Unknown op handler: '.$op);
            }

$params = $data !== null ? $data : array();
            call_user_func_array($callable, array($params));
        }
    }

/**
     * Outputs a status message
     *
     * @param string $text
     * @param string $level
     *
     * @return void
     */
    private function output($text, $level = null)
    {
        if ($this->logger !== null) {
            $this->logger->log($level !== null ? $level: LogLevel::DEBUG, $text);
        }

if ($this->debug) {
            fwrite(STDERR, sprintf('xdebug-handler[%d] %s', getmypid(), $text.PHP_EOL));
        }
    }

/**
     * @param string $loaded
     *
     * @return void
     */
    private function reportCheck($loaded)
    {
        list($version, $mode) = explode('|', $loaded);

if ($version !== '') {
            $this->loaded = '('.$version.')'.($mode !== '' ? ' mode='.$mode : '');
        }
        $this->modeOff = $mode === 'off';
        $this->output('Checking '.$this->envAllowXdebug);
    }

/**
     * @param string $error
     *
     * @return void
     */
    private function reportError($error)
    {
        $this->output(sprintf('No restart (%s)', $error), LogLevel::WARNING);
    }

/**
     * @param string $info
     *
     * @return void
     */
    private function reportInfo($info)
    {
        $this->output($info);
    }

/**
     * @return void
     */
    private function reportNoRestart()
    {
        $this->output($this->getLoadedMessage());

if ($this->loaded !== null) {
            $text = sprintf('No restart (%s)', $this->getEnvAllow());
            if (!((bool) getenv($this->envAllowXdebug))) {
                $text .= ' Allowed by '.($this->modeOff ? 'mode' : 'application');
            }
            $this->output($text);
        }
    }

/**
     * @return void
     */
    private function reportRestart()
    {
        $this->output($this->getLoadedMessage());
        Process::setEnv(self::ENV_RESTART, (string) microtime(true));
    }

/**
     * @return void
     */
    private function reportRestarted()
    {
        $loaded = $this->getLoadedMessage();
        $text = sprintf('Restarted (%d ms). %s', $this->time, $loaded);
        $level = $this->loaded !== null ? LogLevel::WARNING : null;
        $this->output($text, $level);
    }

/**
     * @param string $command
     *
     * @return void
     */
    private function reportRestarting($command)
    {
        $text = sprintf('Process restarting (%s)', $this->getEnvAllow());
        $this->output($text);
        $text = 'Running '.$command;
        $this->output($text);
    }

/**
     * Returns the _ALLOW_XDEBUG environment variable as name=value
     *
     * @return string
     */
    private function getEnvAllow()
    {
        return $this->envAllowXdebug.'='.getenv($this->envAllowXdebug);
    }

/**
     * Returns the Xdebug status and version
     *
     * @return string
     */
    private function getLoadedMessage()
    {
        $loaded = $this->loaded !== null ? sprintf('loaded %s', $this->loaded) : 'not loaded';
        return 'The Xdebug extension is '.$loaded;
    }
}
<?php

namespace Composer\XdebugHandler;

/**
 * @author John Stevenson <john-stevenson@blueyonder.co.uk>
 *
 * @phpstan-type restartData array{tmpIni: string, scannedInis: bool, scanDir: false|string, phprc: false|string, inis: string[], skipped: string}
 */
class PhpConfig
{
    /**
     * Use the original PHP configuration
     *
     * @return string[] Empty array of PHP cli options
     */
    public function useOriginal()
    {
        $this->getDataAndReset();
        return array();
    }

/**
     * Use standard restart settings
     *
     * @return string[] PHP cli options
     */
    public function useStandard()
    {
        $data = $this->getDataAndReset();
        if ($data !== null) {
            return array('-n', '-c', $data['tmpIni']);
        }

return array();
    }

/**
     * Use environment variables to persist settings
     *
     * @return string[] Empty array of PHP cli options
     */
    public function usePersistent()
    {
        $data = $this->getDataAndReset();
        if ($data !== null) {
            $this->updateEnv('PHPRC', $data['tmpIni']);
            $this->updateEnv('PHP_INI_SCAN_DIR', '');
        }

return array();
    }

/**
     * Returns restart data if available and resets the environment
     *
     * @return array|null
     * @phpstan-return restartData|null
     */
    private function getDataAndReset()
    {
        $data = XdebugHandler::getRestartSettings();
        if ($data !== null) {
            $this->updateEnv('PHPRC', $data['phprc']);
            $this->updateEnv('PHP_INI_SCAN_DIR', $data['scanDir']);
        }

return $data;
    }

/**
     * Updates a restart settings value in the environment
     *
     * @param string $name
     * @param string|false $value
     *
     * @return void
     */
    private function updateEnv($name, $value)
    {
        Process::setEnv($name, false !== $value ? $value : null);
    }
}
<?php

namespace Composer\XdebugHandler;

use Composer\Pcre\Preg;
use Psr\Log\LoggerInterface;

/**
 * @author John Stevenson <john-stevenson@blueyonder.co.uk>
 *
 * @phpstan-import-type restartData from PhpConfig
 */
class XdebugHandler
{
    const SUFFIX_ALLOW = '_ALLOW_XDEBUG';
    const SUFFIX_INIS = '_ORIGINAL_INIS';
    const RESTART_ID = 'internal';
    const RESTART_SETTINGS = 'XDEBUG_HANDLER_SETTINGS';
    const DEBUG = 'XDEBUG_HANDLER_DEBUG';

/** @var string|null */
    protected $tmpIni;

/** @var bool */
    private static $inRestart;

/** @var string */
    private static $name;

/** @var string|null */
    private static $skipped;

/** @var bool */
    private static $xdebugActive;

/** @var string|null */
    private static $xdebugMode;

/** @var string|null */
    private static $xdebugVersion;

/** @var bool */
    private $cli;

/** @var string|null */
    private $debug;

/** @var string */
    private $envAllowXdebug;

/** @var string */
    private $envOriginalInis;

/** @var bool */
    private $persistent;

/** @var string|null */
    private $script;

/** @var Status */
    private $statusWriter;

/**
     * Constructor
     *
     * The $envPrefix is used to create distinct environment variables. It is
     * uppercased and prepended to the default base values. For example 'myapp'
     * would result in MYAPP_ALLOW_XDEBUG and MYAPP_ORIGINAL_INIS.
     *
     * @param string $envPrefix Value used in environment variables
     * @throws \RuntimeException If the parameter is invalid
     */
    public function __construct($envPrefix)
    {
        if (!is_string($envPrefix) || $envPrefix === '') {
            throw new \RuntimeException('Invalid constructor parameter');
        }

self::$name = strtoupper($envPrefix);
        $this->envAllowXdebug = self::$name.self::SUFFIX_ALLOW;
        $this->envOriginalInis = self::$name.self::SUFFIX_INIS;

self::setXdebugDetails();
        self::$inRestart = false;

if ($this->cli = PHP_SAPI === 'cli') {
            $this->debug = (string) getenv(self::DEBUG);
        }

$this->statusWriter = new Status($this->envAllowXdebug, (bool) $this->debug);
    }

/**
     * Activates status message output to a PSR3 logger
     *
     * @param LoggerInterface $logger
     *
     * @return $this
     */
    public function setLogger(LoggerInterface $logger)
    {
        $this->statusWriter->setLogger($logger);
        return $this;
    }

/**
     * Sets the main script location if it cannot be called from argv
     *
     * @param string $script
     *
     * @return $this
     */
    public function setMainScript($script)
    {
        $this->script = $script;
        return $this;
    }

/**
     * Persist the settings to keep Xdebug out of sub-processes
     *
     * @return $this
     */
    public function setPersistent()
    {
        $this->persistent = true;
        return $this;
    }

/**
     * Checks if Xdebug is loaded and the process needs to be restarted
     *
     * This behaviour can be disabled by setting the MYAPP_ALLOW_XDEBUG
     * environment variable to 1. This variable is used internally so that
     * the restarted process is created only once.
     *
     * @return void
     */
    public function check()
    {
        $this->notify(Status::CHECK, self::$xdebugVersion.'|'.self::$xdebugMode);
        $envArgs = explode('|', (string) getenv($this->envAllowXdebug));

if (!((bool) $envArgs[0]) && $this->requiresRestart(self::$xdebugActive)) {
            // Restart required
            $this->notify(Status::RESTART);

if ($this->prepareRestart()) {
                $command = $this->getCommand();
                $this->restart($command);
            }
            return;
        }

if (self::RESTART_ID === $envArgs[0] && count($envArgs) === 5) {
            // Restarted, so unset environment variable and use saved values
            $this->notify(Status::RESTARTED);

Process::setEnv($this->envAllowXdebug);
            self::$inRestart = true;

if (self::$xdebugVersion === null) {
                // Skipped version is only set if Xdebug is not loaded
                self::$skipped = $envArgs[1];
            }

$this->tryEnableSignals();

// Put restart settings in the environment
            $this->setEnvRestartSettings($envArgs);
            return;
        }

$this->notify(Status::NORESTART);
        $settings = self::getRestartSettings();

if ($settings !== null) {
            // Called with existing settings, so sync our settings
            $this->syncSettings($settings);
        }
    }

/**
     * Returns an array of php.ini locations with at least one entry
     *
     * The equivalent of calling php_ini_loaded_file then php_ini_scanned_files.
     * The loaded ini location is the first entry and may be empty.
     *
     * @return string[]
     */
    public static function getAllIniFiles()
    {
        if (self::$name !== null) {
            $env = getenv(self::$name.self::SUFFIX_INIS);

if (false !== $env) {
                return explode(PATH_SEPARATOR, $env);
            }
        }

$paths = array((string) php_ini_loaded_file());
        $scanned = php_ini_scanned_files();

if ($scanned !== false) {
            $paths = array_merge($paths, array_map('trim', explode(',', $scanned)));
        }

return $paths;
    }

/**
     * Returns an array of restart settings or null
     *
     * Settings will be available if the current process was restarted, or
     * called with the settings from an existing restart.
     *
     * @return array|null
     * @phpstan-return restartData|null
     */
    public static function getRestartSettings()
    {
        $envArgs = explode('|', (string) getenv(self::RESTART_SETTINGS));

if (count($envArgs) !== 6
            || (!self::$inRestart && php_ini_loaded_file() !== $envArgs[0])) {
            return null;
        }

return array(
            'tmpIni' => $envArgs[0],
            'scannedInis' => (bool) $envArgs[1],
            'scanDir' => '*' === $envArgs[2] ? false : $envArgs[2],
            'phprc' => '*' === $envArgs[3] ? false : $envArgs[3],
            'inis' => explode(PATH_SEPARATOR, $envArgs[4]),
            'skipped' => $envArgs[5],
        );
    }

/**
     * Returns the Xdebug version that triggered a successful restart
     *
     * @return string
     */
    public static function getSkippedVersion()
    {
        return (string) self::$skipped;
    }

/**
     * Returns whether Xdebug is loaded and active
     *
     * true: if Xdebug is loaded and is running in an active mode.
     * false: if Xdebug is not loaded, or it is running with xdebug.mode=off.
     *
     * @return bool
     */
    public static function isXdebugActive()
    {
        self::setXdebugDetails();
        return self::$xdebugActive;
    }

/**
     * Allows an extending class to decide if there should be a restart
     *
     * The default is to restart if Xdebug is loaded and its mode is not "off".
     * Do not typehint for 1.x compatibility.
     *
     * @param bool $default The default behaviour
     *
     * @return bool Whether the process should restart
     */
    protected function requiresRestart($default)
    {
        return $default;
    }

/**
     * Allows an extending class to access the tmpIni
     *
     * Do not typehint for 1.x compatibility
     *
     * @param string[] $command
     *
     * @return void
     */
    protected function restart($command)
    {
        $this->doRestart($command);
    }

/**
     * Executes the restarted command then deletes the tmp ini
     *
     * @param string[] $command
     *
     * @return void
     * @phpstan-return never
     */
    private function doRestart(array $command)
    {
        $this->tryEnableSignals();
        $this->notify(Status::RESTARTING, implode(' ', $command));

if (PHP_VERSION_ID >= 70400) {
            $cmd = $command;
        } else {
            $cmd = Process::escapeShellCommand($command);
            if (defined('PHP_WINDOWS_VERSION_BUILD')) {
                // Outer quotes required on cmd string below PHP 8
                $cmd = '"'.$cmd.'"';
            }
        }

$process = proc_open($cmd, array(), $pipes);
        if (is_resource($process)) {
            $exitCode = proc_close($process);
        }

if (!isset($exitCode)) {
            // Unlikely that php or the default shell cannot be invoked
            $this->notify(Status::ERROR, 'Unable to restart process');
            $exitCode = -1;
        } else {
            $this->notify(Status::INFO, 'Restarted process exited '.$exitCode);
        }

if ($this->debug === '2') {
            $this->notify(Status::INFO, 'Temp ini saved: '.$this->tmpIni);
        } else {
            @unlink((string) $this->tmpIni);
        }

exit($exitCode);
    }

/**
     * Returns true if everything was written for the restart
     *
     * If any of the following fails (however unlikely) we must return false to
     * stop potential recursion:
     *   - tmp ini file creation
     *   - environment variable creation
     *
     * @return bool
     */
    private function prepareRestart()
    {
        $error = null;
        $iniFiles = self::getAllIniFiles();
        $scannedInis = count($iniFiles) > 1;
        $tmpDir = sys_get_temp_dir();

if (!$this->cli) {
            $error = 'Unsupported SAPI: '.PHP_SAPI;
        } elseif (!defined('PHP_BINARY')) {
            $error = 'PHP version is too old: '.PHP_VERSION;
        } elseif (!$this->checkConfiguration($info)) {
            $error = $info;
        } elseif (!$this->checkScanDirConfig()) {
            $error = 'PHP version does not report scanned inis: '.PHP_VERSION;
        } elseif (!$this->checkMainScript()) {
            $error = 'Unable to access main script: '.$this->script;
        } elseif (!$this->writeTmpIni($iniFiles, $tmpDir, $error)) {
            $error = $error !== null ? $error : 'Unable to create temp ini file at: '.$tmpDir;
        } elseif (!$this->setEnvironment($scannedInis, $iniFiles)) {
            $error = 'Unable to set environment variables';
        }

if ($error !== null) {
            $this->notify(Status::ERROR, $error);
        }

return $error === null;
    }

/**
     * Returns true if the tmp ini file was written
     *
     * @param string[] $iniFiles All ini files used in the current process
     * @param string $tmpDir The system temporary directory
     * @param null|string $error Set by method if ini file cannot be read
     *
     * @return bool
     */
    private function writeTmpIni(array $iniFiles, $tmpDir, &$error)
    {
        if (($tmpfile = @tempnam($tmpDir, '')) === false) {
            return false;
        }

$this->tmpIni = $tmpfile;

// $iniFiles has at least one item and it may be empty
        if ($iniFiles[0] === '') {
            array_shift($iniFiles);
        }

$content = '';
        $sectionRegex = '/^\s*\[(?:PATH|HOST)\s*=/mi';
        $xdebugRegex = '/^\s*(zend_extension\s*=.*xdebug.*)$/mi';

foreach ($iniFiles as $file) {
            // Check for inaccessible ini files
            if (($data = @file_get_contents($file)) === false) {
                $error = 'Unable to read ini: '.$file;
                return false;
            }
            // Check and remove directives after HOST and PATH sections
            if (Preg::isMatchWithOffsets($sectionRegex, $data, $matches, PREG_OFFSET_CAPTURE)) {
                $data = substr($data, 0, $matches[0][1]);
            }
            $content .= Preg::replace($xdebugRegex, ';$1', $data).PHP_EOL;
        }

// Merge loaded settings into our ini content, if it is valid
        $config = parse_ini_string($content);
        $loaded = ini_get_all(null, false);

if (false === $config || false === $loaded) {
            $error = 'Unable to parse ini data';
            return false;
        }

$content .= $this->mergeLoadedConfig($loaded, $config);

// Work-around for https://bugs.php.net/bug.php?id=75932
        $content .= 'opcache.enable_cli=0'.PHP_EOL;

return (bool) @file_put_contents($this->tmpIni, $content);
    }

/**
     * Returns the command line arguments for the restart
     *
     * @return string[]
     */
    private function getCommand()
    {
        $php = array(PHP_BINARY);
        $args = array_slice($_SERVER['argv'], 1);

if (!$this->persistent) {
            // Use command-line options
            array_push($php, '-n', '-c', $this->tmpIni);
        }

return array_merge($php, array($this->script), $args);
    }

/**
     * Returns true if the restart environment variables were set
     *
     * No need to update $_SERVER since this is set in the restarted process.
     *
     * @param bool $scannedInis Whether there were scanned ini files
     * @param string[] $iniFiles All ini files used in the current process
     *
     * @return bool
     */
    private function setEnvironment($scannedInis, array $iniFiles)
    {
        $scanDir = getenv('PHP_INI_SCAN_DIR');
        $phprc = getenv('PHPRC');

// Make original inis available to restarted process
        if (!putenv($this->envOriginalInis.'='.implode(PATH_SEPARATOR, $iniFiles))) {
            return false;
        }

if ($this->persistent) {
            // Use the environment to persist the settings
            if (!putenv('PHP_INI_SCAN_DIR=') || !putenv('PHPRC='.$this->tmpIni)) {
                return false;
            }
        }

// Flag restarted process and save values for it to use
        $envArgs = array(
            self::RESTART_ID,
            self::$xdebugVersion,
            (int) $scannedInis,
            false === $scanDir ? '*' : $scanDir,
            false === $phprc ? '*' : $phprc,
        );

return putenv($this->envAllowXdebug.'='.implode('|', $envArgs));
    }

/**
     * Logs status messages
     *
     * @param string $op Status handler constant
     * @param null|string $data Optional data
     *
     * @return void
     */
    private function notify($op, $data = null)
    {
        $this->statusWriter->report($op, $data);
    }

/**
     * Returns default, changed and command-line ini settings
     *
     * @param mixed[] $loadedConfig All current ini settings
     * @param mixed[] $iniConfig Settings from user ini files
     *
     * @return string
     */
    private function mergeLoadedConfig(array $loadedConfig, array $iniConfig)
    {
        $content = '';

foreach ($loadedConfig as $name => $value) {
            // Value will either be null, string or array (HHVM only)
            if (!is_string($value)
                || strpos($name, 'xdebug') === 0
                || $name === 'apc.mmap_file_mask') {
                continue;
            }

if (!isset($iniConfig[$name]) || $iniConfig[$name] !== $value) {
                // Double-quote escape each value
                $content .= $name.'="'.addcslashes($value, '\\"').'"'.PHP_EOL;
            }
        }

return $content;
    }

/**
     * Returns true if the script name can be used
     *
     * @return bool
     */
    private function checkMainScript()
    {
        if (null !== $this->script) {
            // Allow an application to set -- for standard input
            return file_exists($this->script) || '--' === $this->script;
        }

if (file_exists($this->script = $_SERVER['argv'][0])) {
            return true;
        }

// Use a backtrace to resolve Phar and chdir issues.
        $trace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
        $main = end($trace);

if ($main !== false && isset($main['file'])) {
            return file_exists($this->script = $main['file']);
        }

return false;
    }

/**
     * Adds restart settings to the environment
     *
     * @param string[] $envArgs
     *
     * @return void
     */
    private function setEnvRestartSettings($envArgs)
    {
        $settings = array(
            php_ini_loaded_file(),
            $envArgs[2],
            $envArgs[3],
            $envArgs[4],
            getenv($this->envOriginalInis),
            self::$skipped,
        );

Process::setEnv(self::RESTART_SETTINGS, implode('|', $settings));
    }

/**
     * Syncs settings and the environment if called with existing settings
     *
     * @param array $settings
     * @phpstan-param restartData $settings
     *
     * @return void
     */
    private function syncSettings(array $settings)
    {
        if (false === getenv($this->envOriginalInis)) {
            // Called by another app, so make original inis available
            Process::setEnv($this->envOriginalInis, implode(PATH_SEPARATOR, $settings['inis']));
        }

self::$skipped = $settings['skipped'];
        $this->notify(Status::INFO, 'Process called with existing restart settings');
    }

/**
     * Returns true if there are scanned inis and PHP is able to report them
     *
     * php_ini_scanned_files will fail when PHP_CONFIG_FILE_SCAN_DIR is empty.
     * Fixed in 7.1.13 and 7.2.1
     *
     * @return bool
     */
    private function checkScanDirConfig()
    {
        if (PHP_VERSION_ID >= 70113 && PHP_VERSION_ID !== 70200) {
            return true;
        }

return ((string) getenv('PHP_INI_SCAN_DIR') === '')
            || PHP_CONFIG_FILE_SCAN_DIR !== '';
    }

/**
     * Returns true if there are no known configuration issues
     *
     * @param string $info Set by method
     * @return bool
     */
    private function checkConfiguration(&$info)
    {
        if (!function_exists('proc_open')) {
            $info = 'proc_open function is disabled';
            return false;
        }

if (extension_loaded('uopz') && !((bool) ini_get('uopz.disable'))) {
            // uopz works at opcode level and disables exit calls
            if (function_exists('uopz_allow_exit')) {
                @uopz_allow_exit(true);
            } else {
                $info = 'uopz extension is not compatible';
                return false;
            }
        }

// Check UNC paths when using cmd.exe
        if (defined('PHP_WINDOWS_VERSION_BUILD') && PHP_VERSION_ID < 70400) {
            $workingDir = getcwd();

if ($workingDir === false) {
                $info = 'unable to determine working directory';
                return false;
            }

if (0 === strpos($workingDir, '\\\\')) {
                $info = 'cmd.exe does not support UNC paths: '.$workingDir;
                return false;
            }
        }

return true;
    }

/**
     * Enables async signals and control interrupts in the restarted process
     *
     * Available on Unix PHP 7.1+ with the pcntl extension and Windows PHP 7.4+.
     *
     * @return void
     */
    private function tryEnableSignals()
    {
        if (function_exists('pcntl_async_signals') && function_exists('pcntl_signal')) {
            pcntl_async_signals(true);
            $message = 'Async signals enabled';

if (!self::$inRestart) {
                // Restarting, so ignore SIGINT in parent
                pcntl_signal(SIGINT, SIG_IGN);
            } elseif (is_int(pcntl_signal_get_handler(SIGINT))) {
                // Restarted, no handler set so force default action
                pcntl_signal(SIGINT, SIG_DFL);
            }
        }

if (!self::$inRestart && function_exists('sapi_windows_set_ctrl_handler')) {
            // Restarting, so set a handler to ignore CTRL events in the parent.
            // This ensures that CTRL+C events will be available in the child
            // process without having to enable them there, which is unreliable.
            sapi_windows_set_ctrl_handler(function ($evt) {});
        }
    }

/**
     * Sets static properties $xdebugActive, $xdebugVersion and $xdebugMode
     *
     * @return void
     */
    private static function setXdebugDetails()
    {
        if (self::$xdebugActive !== null) {
            return;
        }

self::$xdebugActive = false;
        if (!extension_loaded('xdebug')) {
            return;
        }

$version = phpversion('xdebug');
        self::$xdebugVersion = $version !== false ? $version : 'unknown';

if (version_compare(self::$xdebugVersion, '3.1', '>=')) {
            $modes = xdebug_info('mode');
            self::$xdebugMode = count($modes) === 0 ? 'off' : implode(',', $modes);
            self::$xdebugActive = self::$xdebugMode !== 'off';
            return;
        }

// See if xdebug.mode is supported in this version
        $iniMode = ini_get('xdebug.mode');
        if ($iniMode === false) {
            return;
        }

// Environment value wins but cannot be empty
        $envMode = (string) getenv('XDEBUG_MODE');
        if ($envMode !== '') {
            self::$xdebugMode = $envMode;
        } else {
            self::$xdebugMode = $iniMode !== '' ? $iniMode : 'off';
        }

// An empty comma-separated list is treated as mode 'off'
        if (Preg::isMatch('/^,+$/', str_replace(' ', '', self::$xdebugMode))) {
            self::$xdebugMode = 'off';
        }

self::$xdebugActive = self::$xdebugMode !== 'off';
    }
}
<?php

namespace Composer\XdebugHandler;

use Composer\Pcre\Preg;

/**
 * Process utility functions
 *
 * @author John Stevenson <john-stevenson@blueyonder.co.uk>
 */
class Process
{
    /**
     * Escapes a string to be used as a shell argument.
     *
     * From https://github.com/johnstevenson/winbox-args
     * MIT Licensed (c) John Stevenson <john-stevenson@blueyonder.co.uk>
     *
     * @param string $arg  The argument to be escaped
     * @param bool   $meta Additionally escape cmd.exe meta characters
     * @param bool $module The argument is the module to invoke
     *
     * @return string The escaped argument
     */
    public static function escape($arg, $meta = true, $module = false)
    {
        if (!defined('PHP_WINDOWS_VERSION_BUILD')) {
            return "'".str_replace("'", "'\\''", $arg)."'";
        }

$quote = strpbrk($arg, " \t") !== false || $arg === '';

$arg = Preg::replace('/(\\\\*)"/', '$1$1\\"', $arg, -1, $dquotes);

if ($meta) {
            $meta = $dquotes || Preg::isMatch('/%[^%]+%/', $arg);

if (!$meta) {
                $quote = $quote || strpbrk($arg, '^&|<>()') !== false;
            } elseif ($module && !$dquotes && $quote) {
                $meta = false;
            }
        }

if ($quote) {
            $arg = '"'.(Preg::replace('/(\\\\*)$/', '$1$1', $arg)).'"';
        }

if ($meta) {
            $arg = Preg::replace('/(["^&|<>()%])/', '^$1', $arg);
        }

return $arg;
    }

/**
     * Escapes an array of arguments that make up a shell command
     *
     * @param string[] $args Argument list, with the module name first
     *
     * @return string The escaped command line
     */
    public static function escapeShellCommand(array $args)
    {
        $command = '';
        $module = array_shift($args);

if ($module !== null) {
            $command = self::escape($module, true, true);

foreach ($args as $arg) {
                $command .= ' '.self::escape($arg);
            }
        }

return $command;
    }

/**
     * Makes putenv environment changes available in $_SERVER and $_ENV
     *
     * @param string $name
     * @param string|null $value A null value unsets the variable
     *
     * @return bool Whether the environment variable was set
     */
    public static function setEnv($name, $value = null)
    {
        $unset = null === $value;

if (!putenv($unset ? $name : $name.'='.$value)) {
            return false;
        }

if ($unset) {
            unset($_SERVER[$name]);
        } else {
            $_SERVER[$name] = $value;
        }

// Update $_ENV if it is being used
        if (false !== stripos((string) ini_get('variables_order'), 'E')) {
            if ($unset) {
                unset($_ENV[$name]);
            } else {
                $_ENV[$name] = $value;
            }
        }

return true;
    }
}
<?php

// autoload_static.php @generated by Composer

namespace Composer\Autoload;

class ComposerStaticInit04114110af87f5624b3580eba43b8770
{
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        '080fadd667195d055c5a23386f270261' => __DIR__ . '/..' . '/wp-cli/role-command/role-command.php',
        '8ecb13f8bbc22b1b34d12b14ec01077a' => __DIR__ . '/..' . '/wp-cli/search-replace-command/search-replace-command.php',
        '129d58fa8151374aceb8571bcaa97504' => __DIR__ . '/..' . '/wp-cli/shell-command/shell-command.php',
        '1f05372afcc7d0c51a305cef1d56dd01' => __DIR__ . '/..' . '/wp-cli/widget-command/widget-command.php',
    );

public static $prefixLengthsPsr4 = array (
        'W' => 
        array (
            'WP_CLI\\MaintenanceMode\\' => 23,
            'WP_CLI\\I18n\\' => 12,
            'WP_CLI\\Embeds\\' => 14,
            'WP_CLI\\' => 7,
        ),
        'S' => 
        array (
            'Symfony\\Polyfill\\Mbstring\\' => 26,
            'Symfony\\Polyfill\\Ctype\\' => 23,
            'Symfony\\Component\\Process\\' => 26,
            'Symfony\\Component\\Finder\\' => 25,
            'Symfony\\Component\\Filesystem\\' => 29,
            'Symfony\\Component\\Debug\\' => 24,
            'Symfony\\Component\\Console\\' => 26,
            'Seld\\PharUtils\\' => 15,
            'Seld\\JsonLint\\' => 14,
        ),
        'R' => 
        array (
            'React\\Promise\\' => 14,
        ),
        'P' => 
        array (
            'Psr\\Log\\' => 8,
            'Peast\\test\\' => 11,
            'Peast\\' => 6,
        ),
        'M' => 
        array (
            'Mustangostang\\' => 14,
        ),
        'J' => 
        array (
            'JsonSchema\\' => 11,
        ),
        'G' => 
        array (
            'Gettext\\Languages\\' => 18,
            'Gettext\\' => 8,
        ),
        'C' => 
        array (
            'Composer\\XdebugHandler\\' => 23,
            'Composer\\Spdx\\' => 14,
            'Composer\\Semver\\' => 16,
            'Composer\\Pcre\\' => 14,
            'Composer\\MetadataMinifier\\' => 26,
            'Composer\\CaBundle\\' => 18,
            'Composer\\' => 9,
        ),
    );

public static $prefixDirsPsr4 = array (
        'WP_CLI\\MaintenanceMode\\' => 
        array (
            0 => __DIR__ . '/..' . '/wp-cli/maintenance-mode-command/src',
        ),
        'WP_CLI\\I18n\\' => 
        array (
            0 => __DIR__ . '/..' . '/wp-cli/i18n-command/src',
        ),
        'WP_CLI\\Embeds\\' => 
        array (
            0 => __DIR__ . '/..' . '/wp-cli/embed-command/src',
        ),
        'WP_CLI\\' => 
        array (
            0 => __DIR__ . '/..' . '/wp-cli/entity-command/src/WP_CLI',
            1 => __DIR__ . '/..' . '/wp-cli/shell-command/src/WP_CLI',
        ),
        'Symfony\\Polyfill\\Mbstring\\' => 
        array (
            0 => __DIR__ . '/..' . '/symfony/polyfill-mbstring',
        ),
        'Symfony\\Polyfill\\Ctype\\' => 
        array (
            0 => __DIR__ . '/..' . '/symfony/polyfill-ctype',
        ),
        'Symfony\\Component\\Process\\' => 
        array (
            0 => __DIR__ . '/..' . '/symfony/process',
        ),
        'Symfony\\Component\\Finder\\' => 
        array (
            0 => __DIR__ . '/..' . '/symfony/finder',
        ),
        'Symfony\\Component\\Filesystem\\' => 
        array (
            0 => __DIR__ . '/..' . '/symfony/filesystem',
        ),
        'Symfony\\Component\\Debug\\' => 
        array (
        ),
        'Symfony\\Component\\Console\\' => 
        array (
            0 => __DIR__ . '/..' . '/symfony/console',
        ),
        'Seld\\PharUtils\\' => 
        array (
            0 => __DIR__ . '/..' . '/seld/phar-utils/src',
        ),
        'Seld\\JsonLint\\' => 
        array (
            0 => __DIR__ . '/..' . '/seld/jsonlint/src/Seld/JsonLint',
        ),
        'React\\Promise\\' => 
        array (
            0 => __DIR__ . '/..' . '/react/promise/src',
        ),
        'Psr\\Log\\' => 
        array (
            0 => __DIR__ . '/..' . '/psr/log/Psr/Log',
        ),
        'Peast\\test\\' => 
        array (
            0 => __DIR__ . '/..' . '/mck89/peast/test/Peast',
        ),
        'Peast\\' => 
        array (
            0 => __DIR__ . '/..' . '/mck89/peast/lib/Peast',
        ),
        'Mustangostang\\' => 
        array (
            0 => __DIR__ . '/..' . '/wp-cli/mustangostang-spyc/src',
        ),
        'JsonSchema\\' => 
        array (
            0 => __DIR__ . '/..' . '/justinrainbow/json-schema/src/JsonSchema',
        ),
        'Gettext\\Languages\\' => 
        array (
            0 => __DIR__ . '/..' . '/gettext/languages/src',
        ),
        'Gettext\\' => 
        array (
            0 => __DIR__ . '/..' . '/gettext/gettext/src',
        ),
        'Composer\\XdebugHandler\\' => 
        array (
            0 => __DIR__ . '/..' . '/composer/xdebug-handler/src',
        ),
        'Composer\\Spdx\\' => 
        array (
        ),
        'Composer\\Semver\\' => 
        array (
            0 => __DIR__ . '/..' . '/composer/semver/src',
        ),
        'Composer\\Pcre\\' => 
        array (
            0 => __DIR__ . '/..' . '/composer/pcre/src',
        ),
        'Composer\\MetadataMinifier\\' => 
        array (
            0 => __DIR__ . '/..' . '/composer/metadata-minifier/src',
        ),
        'Composer\\CaBundle\\' => 
        array (
            0 => __DIR__ . '/..' . '/composer/ca-bundle/src',
        ),
        'Composer\\' => 
        array (
            0 => __DIR__ . '/..' . '/composer/composer/src/Composer',
        ),
    );

public static $fallbackDirsPsr4 = array (
        0 => __DIR__ . '/..' . '/wp-cli/cache-command/src',
        1 => __DIR__ . '/..' . '/wp-cli/config-command/src',
        2 => __DIR__ . '/..' . '/wp-cli/core-command/src',
        3 => __DIR__ . '/..' . '/wp-cli/checksum-command/src',
        4 => __DIR__ . '/..' . '/wp-cli/cron-command/src',
        5 => __DIR__ . '/..' . '/wp-cli/db-command/src',
        6 => __DIR__ . '/..' . '/wp-cli/eval-command/src',
        7 => __DIR__ . '/..' . '/wp-cli/export-command/src',
        8 => __DIR__ . '/..' . '/wp-cli/entity-command/src',
        9 => __DIR__ . '/..' . '/wp-cli/extension-command/src',
        10 => __DIR__ . '/..' . '/wp-cli/import-command/src',
        11 => __DIR__ . '/..' . '/wp-cli/language-command/src',
        12 => __DIR__ . '/..' . '/wp-cli/media-command/src',
        13 => __DIR__ . '/..' . '/wp-cli/package-command/src',
        14 => __DIR__ . '/..' . '/wp-cli/rewrite-command/src',
        15 => __DIR__ . '/..' . '/wp-cli/role-command/src',
        16 => __DIR__ . '/..' . '/wp-cli/search-replace-command/src',
        17 => __DIR__ . '/..' . '/wp-cli/server-command/src',
        18 => __DIR__ . '/..' . '/wp-cli/scaffold-command/src',
        19 => __DIR__ . '/..' . '/wp-cli/shell-command/src',
        20 => __DIR__ . '/..' . '/wp-cli/super-admin-command/src',
        21 => __DIR__ . '/..' . '/wp-cli/widget-command/src',
    );

public static $prefixesPsr0 = array (
        'c' => 
        array (
            'cli' => 
            array (
                0 => __DIR__ . '/..' . '/wp-cli/php-cli-tools/lib',
            ),
        ),
        'W' => 
        array (
            'WP_CLI\\' => 
            array (
                0 => __DIR__ . '/..' . '/wp-cli/wp-cli/php',
            ),
        ),
        'R' => 
        array (
            'Requests' => 
            array (
                0 => __DIR__ . '/..' . '/rmccue/requests/library',
            ),
        ),
        'O' => 
        array (
            'Oxymel' => 
            array (
                0 => __DIR__ . '/..' . '/nb/oxymel',
            ),
        ),
        'M' => 
        array (
            'Mustache' => 
            array (
                0 => __DIR__ . '/..' . '/mustache/mustache/src',
            ),
        ),
    );

public static $classMap = array (
        'Composer\\InstalledVersions' => __DIR__ . '/..' . '/composer/InstalledVersions.php',
        'WP_CLI' => __DIR__ . '/..' . '/wp-cli/wp-cli/php/class-wp-cli.php',
        'WP_CLI_Command' => __DIR__ . '/..' . '/wp-cli/wp-cli/php/class-wp-cli-command.php',
    );

public static function getInitializer(ClassLoader $loader)
    {
        return \Closure::bind(function () use ($loader) {
            $loader->prefixLengthsPsr4 = ComposerStaticInit04114110af87f5624b3580eba43b8770::$prefixLengthsPsr4;
            $loader->prefixDirsPsr4 = ComposerStaticInit04114110af87f5624b3580eba43b8770::$prefixDirsPsr4;
            $loader->fallbackDirsPsr4 = ComposerStaticInit04114110af87f5624b3580eba43b8770::$fallbackDirsPsr4;
            $loader->prefixesPsr0 = ComposerStaticInit04114110af87f5624b3580eba43b8770::$prefixesPsr0;
            $loader->classMap = ComposerStaticInit04114110af87f5624b3580eba43b8770::$classMap;

}, null, ClassLoader::class);
    }
}
<?php

/*
 * This file is part of composer/pcre.
 *
 * (c) Composer <https://github.com/composer>
 *
 * For the full copyright and license information, please view
 * the LICENSE file that was distributed with this source code.
 */

namespace Composer\Pcre;

class PcreException extends \RuntimeException
{
    /**
     * @param  string $function
     * @param  string|string[] $pattern
     * @return self
     */
    public static function fromFunction($function, $pattern)
    {
        $code = preg_last_error();

if (is_array($pattern)) {
            $pattern = implode(', ', $pattern);
        }

return new PcreException($function.'(): failed executing "'.$pattern.'": '.self::pcreLastErrorMessage($code), $code);
    }

/**
     * @param  int $code
     * @return string
     */
    private static function pcreLastErrorMessage($code)
    {
        if (PHP_VERSION_ID >= 80000) {
            return preg_last_error_msg();
        }

// older php versions did not set the code properly in all cases
        if (PHP_VERSION_ID < 70201 && $code === 0) {
            return 'UNDEFINED_ERROR';
        }

$constants = get_defined_constants(true);
        if (!isset($constants['pcre'])) {
            return 'UNDEFINED_ERROR';
        }

foreach ($constants['pcre'] as $const => $val) {
            if ($val === $code && substr($const, -6) === '_ERROR') {
                return $const;
            }
        }

return 'UNDEFINED_ERROR';
    }
}
<?php

namespace Composer\Pcre;

final class MatchAllWithOffsetsResult
{
    /**
     * An array of match group => list of matches, every match being a pair of string matched + offset in bytes (or -1 if no match)
     *
     * @readonly
     * @var array<int|string, list<array{string|null, int}>>
     * @phpstan-var array<int|string, list<array{string|null, int<-1, max>}>>
     */
    public $matches;

/**
     * @readonly
     * @var 0|positive-int
     */
    public $count;

/**
     * @readonly
     * @var bool
     */
    public $matched;

/**
     * @param 0|positive-int $count
     * @param array<int|string, list<array{string|null, int}>> $matches
     * @phpstan-param array<int|string, list<array{string|null, int<-1, max>}>> $matches
     */
    public function __construct($count, array $matches)
    {
        $this->matches = $matches;
        $this->matched = (bool) $count;
        $this->count = $count;
    }
}
<?php

namespace Composer\Pcre;

class Regex
{
    /**
     * @param non-empty-string $pattern
     * @param string $subject
     * @param int    $offset
     * @return bool
     */
    public static function isMatch($pattern, $subject, $offset = 0)
    {
        return (bool) Preg::match($pattern, $subject, $matches, 0, $offset);
    }

/**
     * @param non-empty-string $pattern
     * @param string $subject
     * @param int    $flags PREG_UNMATCHED_AS_NULL, only available on PHP 7.2+
     * @param int    $offset
     * @return MatchResult
     */
    public static function match($pattern, $subject, $flags = 0, $offset = 0)
    {
        if (($flags & PREG_OFFSET_CAPTURE) !== 0) {
            throw new \InvalidArgumentException('PREG_OFFSET_CAPTURE is not supported as it changes the return type, use matchWithOffsets() instead');
        }

$count = Preg::match($pattern, $subject, $matches, $flags, $offset);

return new MatchResult($count, $matches);
    }

/**
     * Runs preg_match with PREG_OFFSET_CAPTURE
     *
     * @param non-empty-string $pattern
     * @param string $subject
     * @param int    $flags PREG_UNMATCHED_AS_NULL, only available on PHP 7.2+
     * @param int    $offset
     * @return MatchWithOffsetsResult
     */
    public static function matchWithOffsets($pattern, $subject, $flags = 0, $offset = 0)
    {
        $count = Preg::matchWithOffsets($pattern, $subject, $matches, $flags, $offset);

return new MatchWithOffsetsResult($count, $matches);
    }

/**
     * @param non-empty-string $pattern
     * @param string $subject
     * @param int    $flags PREG_UNMATCHED_AS_NULL, only available on PHP 7.2+
     * @param int    $offset
     * @return MatchAllResult
     */
    public static function matchAll($pattern, $subject, $flags = 0, $offset = 0)
    {
        if (($flags & PREG_OFFSET_CAPTURE) !== 0) {
            throw new \InvalidArgumentException('PREG_OFFSET_CAPTURE is not supported as it changes the return type, use matchAllWithOffsets() instead');
        }

if (($flags & PREG_SET_ORDER) !== 0) {
            throw new \InvalidArgumentException('PREG_SET_ORDER is not supported as it changes the return type');
        }

$count = Preg::matchAll($pattern, $subject, $matches, $flags, $offset);

return new MatchAllResult($count, $matches);
    }

/**
     * Runs preg_match_all with PREG_OFFSET_CAPTURE
     *
     * @param non-empty-string $pattern
     * @param string $subject
     * @param int    $flags PREG_UNMATCHED_AS_NULL, only available on PHP 7.2+
     * @param int    $offset
     * @return MatchAllWithOffsetsResult
     */
    public static function matchAllWithOffsets($pattern, $subject, $flags = 0, $offset = 0)
    {
        $count = Preg::matchAllWithOffsets($pattern, $subject, $matches, $flags, $offset);

return new MatchAllWithOffsetsResult($count, $matches);
    }
    /**
     * @param string|string[] $pattern
     * @param string|string[] $replacement
     * @param string          $subject
     * @param int             $limit
     * @return ReplaceResult
     */
    public static function replace($pattern, $replacement, $subject, $limit = -1)
    {
        $result = Preg::replace($pattern, $replacement, $subject, $limit, $count);

return new ReplaceResult($count, $result);
    }

/**
     * @param string|string[] $pattern
     * @param callable        $replacement
     * @param string          $subject
     * @param int             $limit
     * @param int             $flags PREG_OFFSET_CAPTURE or PREG_UNMATCHED_AS_NULL, only available on PHP 7.4+
     * @return ReplaceResult
     */
    public static function replaceCallback($pattern, $replacement, $subject, $limit = -1, $flags = 0)
    {
        $result = Preg::replaceCallback($pattern, $replacement, $subject, $limit, $count, $flags);

return new ReplaceResult($count, $result);
    }

/**
     * Available from PHP 7.0
     *
     * @param array<string, callable> $pattern
     * @param string $subject
     * @param int    $limit
     * @param int    $flags PREG_OFFSET_CAPTURE or PREG_UNMATCHED_AS_NULL, only available on PHP 7.4+
     * @return ReplaceResult
     */
    public static function replaceCallbackArray($pattern, $subject, $limit = -1, $flags = 0)
    {
        $result = Preg::replaceCallbackArray($pattern, $subject, $limit, $count, $flags);

return new ReplaceResult($count, $result);
    }
}
<?php

namespace Composer\Pcre;

class Preg
{
    const ARRAY_MSG = '$subject as an array is not supported. You can use \'foreach\' instead.';

/**
     * @param non-empty-string   $pattern
     * @param string   $subject
     * @param array<string|null> $matches Set by method
     * @param int      $flags PREG_UNMATCHED_AS_NULL, only available on PHP 7.2+
     * @param int      $offset
     * @return 0|1
     */
    public static function match($pattern, $subject, &$matches = null, $flags = 0, $offset = 0)
    {
        if (($flags & PREG_OFFSET_CAPTURE) !== 0) {
            throw new \InvalidArgumentException('PREG_OFFSET_CAPTURE is not supported as it changes the type of $matches, use matchWithOffsets() instead');
        }

$result = preg_match($pattern, $subject, $matches, $flags, $offset);
        if ($result === false) {
            throw PcreException::fromFunction('preg_match', $pattern);
        }

return $result;
    }

/**
     * Runs preg_match with PREG_OFFSET_CAPTURE
     *
     * @param non-empty-string   $pattern
     * @param string   $subject
     * @param array<int|string, array{string|null, int}> $matches Set by method
     * @param int      $flags PREG_UNMATCHED_AS_NULL, only available on PHP 7.2+
     * @param int      $offset
     * @return 0|1
     *
     * @phpstan-param array<int|string, array{string|null, int<-1, max>}> $matches
     */
    public static function matchWithOffsets($pattern, $subject, &$matches, $flags = 0, $offset = 0)
    {
        $result = preg_match($pattern, $subject, $matches, $flags | PREG_OFFSET_CAPTURE, $offset);
        if ($result === false) {
            throw PcreException::fromFunction('preg_match', $pattern);
        }

return $result;
    }

/**
     * @param non-empty-string   $pattern
     * @param string   $subject
     * @param array<int|string, list<string|null>> $matches Set by method
     * @param int      $flags PREG_UNMATCHED_AS_NULL, only available on PHP 7.2+
     * @param int      $offset
     * @return 0|positive-int
     */
    public static function matchAll($pattern, $subject, &$matches = null, $flags = 0, $offset = 0)
    {
        if (($flags & PREG_OFFSET_CAPTURE) !== 0) {
            throw new \InvalidArgumentException('PREG_OFFSET_CAPTURE is not supported as it changes the type of $matches, use matchAllWithOffsets() instead');
        }

if (($flags & PREG_SET_ORDER) !== 0) {
            throw new \InvalidArgumentException('PREG_SET_ORDER is not supported as it changes the type of $matches');
        }

$result = preg_match_all($pattern, $subject, $matches, $flags, $offset);
        if ($result === false || $result === null) {
            throw PcreException::fromFunction('preg_match_all', $pattern);
        }

return $result;
    }

/**
     * Runs preg_match_all with PREG_OFFSET_CAPTURE
     *
     * @param non-empty-string   $pattern
     * @param string   $subject
     * @param array<int|string, list<array{string|null, int}>> $matches Set by method
     * @param int      $flags PREG_UNMATCHED_AS_NULL, only available on PHP 7.2+
     * @param int      $offset
     * @return 0|positive-int
     *
     * @phpstan-param array<int|string, list<array{string|null, int<-1, max>}>> $matches
     */
    public static function matchAllWithOffsets($pattern, $subject, &$matches, $flags = 0, $offset = 0)
    {
        $result = preg_match_all($pattern, $subject, $matches, $flags | PREG_OFFSET_CAPTURE, $offset);
        if ($result === false || $result === null) {
            throw PcreException::fromFunction('preg_match_all', $pattern);
        }

return $result;
    }

/**
     * @param string|string[] $pattern
     * @param string|string[] $replacement
     * @param string          $subject
     * @param int             $limit
     * @param int             $count Set by method
     * @return string
     */
    public static function replace($pattern, $replacement, $subject, $limit = -1, &$count = null)
    {
        if (is_array($subject)) { // @phpstan-ignore-line
            throw new \InvalidArgumentException(static::ARRAY_MSG);
        }

$result = preg_replace($pattern, $replacement, $subject, $limit, $count);
        if ($result === null) {
            throw PcreException::fromFunction('preg_replace', $pattern);
        }

return $result;
    }

/**
     * @param string|string[] $pattern
     * @param callable        $replacement
     * @param string          $subject
     * @param int             $limit
     * @param int             $count Set by method
     * @param int             $flags PREG_OFFSET_CAPTURE or PREG_UNMATCHED_AS_NULL, only available on PHP 7.4+
     * @return string
     */
    public static function replaceCallback($pattern, $replacement, $subject, $limit = -1, &$count = null, $flags = 0)
    {
        if (is_array($subject)) { // @phpstan-ignore-line
            throw new \InvalidArgumentException(static::ARRAY_MSG);
        }

if (PHP_VERSION_ID >= 70400) {
            $result = preg_replace_callback($pattern, $replacement, $subject, $limit, $count, $flags);
        } else {
            $result = preg_replace_callback($pattern, $replacement, $subject, $limit, $count);
        }
        if ($result === null) {
            throw PcreException::fromFunction('preg_replace_callback', $pattern);
        }

return $result;
    }

/**
     * Available from PHP 7.0
     *
     * @param array<string, callable> $pattern
     * @param string $subject
     * @param int    $limit
     * @param int    $count Set by method
     * @param int    $flags PREG_OFFSET_CAPTURE or PREG_UNMATCHED_AS_NULL, only available on PHP 7.4+
     * @return string
     */
    public static function replaceCallbackArray(array $pattern, $subject, $limit = -1, &$count = null, $flags = 0)
    {
        if (is_array($subject)) { // @phpstan-ignore-line
            throw new \InvalidArgumentException(static::ARRAY_MSG);
        }

if (PHP_VERSION_ID >= 70400) {
            $result = preg_replace_callback_array($pattern, $subject, $limit, $count, $flags);
        } else {
            $result = preg_replace_callback_array($pattern, $subject, $limit, $count);
        }
        if ($result === null) {
            $pattern = array_keys($pattern);
            throw PcreException::fromFunction('preg_replace_callback_array', $pattern);
        }

return $result;
    }

/**
     * @param string $pattern
     * @param string $subject
     * @param int    $limit
     * @param int    $flags PREG_SPLIT_NO_EMPTY or PREG_SPLIT_DELIM_CAPTURE
     * @return list<string>
     */
    public static function split($pattern, $subject, $limit = -1, $flags = 0)
    {
        if (($flags & PREG_SPLIT_OFFSET_CAPTURE) !== 0) {
            throw new \InvalidArgumentException('PREG_SPLIT_OFFSET_CAPTURE is not supported as it changes the type of $matches, use splitWithOffsets() instead');
        }

$result = preg_split($pattern, $subject, $limit, $flags);
        if ($result === false) {
            throw PcreException::fromFunction('preg_split', $pattern);
        }

return $result;
    }

/**
     * @param string $pattern
     * @param string $subject
     * @param int    $limit
     * @param int    $flags PREG_SPLIT_NO_EMPTY or PREG_SPLIT_DELIM_CAPTURE
     * @return list<array{string, int}>
     * @phpstan-return list<array{string, int<0, max>}>
     */
    public static function splitWithOffsets($pattern, $subject, $limit = -1, $flags = 0)
    {
        $result = preg_split($pattern, $subject, $limit, $flags | PREG_SPLIT_OFFSET_CAPTURE);
        if ($result === false) {
            throw PcreException::fromFunction('preg_split', $pattern);
        }

return $result;
    }

/**
     * @template T of string|\Stringable
     * @param string   $pattern
     * @param array<T> $array
     * @param int      $flags PREG_GREP_INVERT
     * @return array<T>
     */
    public static function grep($pattern, array $array, $flags = 0)
    {
        $result = preg_grep($pattern, $array, $flags);
        if ($result === false) {
            throw PcreException::fromFunction('preg_grep', $pattern);
        }

return $result;
    }

/**
     * @param non-empty-string   $pattern
     * @param string   $subject
     * @param array<string|null> $matches Set by method
     * @param int      $flags PREG_UNMATCHED_AS_NULL, only available on PHP 7.2+
     * @param int      $offset
     * @return bool
     */
    public static function isMatch($pattern, $subject, &$matches = null, $flags = 0, $offset = 0)
    {
        return (bool) static::match($pattern, $subject, $matches, $flags, $offset);
    }

/**
     * @param non-empty-string   $pattern
     * @param string   $subject
     * @param array<int|string, list<string|null>> $matches Set by method
     * @param int      $flags PREG_UNMATCHED_AS_NULL, only available on PHP 7.2+
     * @param int      $offset
     * @return bool
     */
    public static function isMatchAll($pattern, $subject, &$matches = null, $flags = 0, $offset = 0)
    {
        return (bool) static::matchAll($pattern, $subject, $matches, $flags, $offset);
    }

/**
     * Runs preg_match with PREG_OFFSET_CAPTURE
     *
     * @param non-empty-string   $pattern
     * @param string   $subject
     * @param array<int|string, array{string|null, int}> $matches Set by method
     * @param int      $flags PREG_UNMATCHED_AS_NULL, only available on PHP 7.2+
     * @param int      $offset
     * @return bool
     *
     * @phpstan-param array<int|string, array{string|null, int<-1, max>}> $matches
     */
    public static function isMatchWithOffsets($pattern, $subject, &$matches, $flags = 0, $offset = 0)
    {
        return (bool) static::matchWithOffsets($pattern, $subject, $matches, $flags, $offset);
    }

/**
     * Runs preg_match_all with PREG_OFFSET_CAPTURE
     *
     * @param non-empty-string   $pattern
     * @param string   $subject
     * @param array<int|string, list<array{string|null, int}>> $matches Set by method
     * @param int      $flags PREG_UNMATCHED_AS_NULL, only available on PHP 7.2+
     * @param int      $offset
     * @return bool
     *
     * @phpstan-param array<int|string, list<array{string|null, int<-1, max>}>> $matches
     */
    public static function isMatchAllWithOffsets($pattern, $subject, &$matches, $flags = 0, $offset = 0)
    {
        return (bool) static::matchAllWithOffsets($pattern, $subject, $matches, $flags, $offset);
    }
}
<?php

namespace Composer\Pcre;

final class MatchResult
{
    /**
     * An array of match group => string matched
     *
     * @readonly
     * @var array<int|string, string|null>
     */
    public $matches;

/**
     * @readonly
     * @var bool
     */
    public $matched;

/**
     * @param 0|positive-int $count
     * @param array<string|null> $matches
     */
    public function __construct($count, array $matches)
    {
        $this->matches = $matches;
        $this->matched = (bool) $count;
    }
}
<?php

namespace Composer\Pcre;

final class MatchAllResult
{
    /**
     * An array of match group => list of matched strings
     *
     * @readonly
     * @var array<int|string, list<string|null>>
     */
    public $matches;

/**
     * @readonly
     * @var 0|positive-int
     */
    public $count;

/**
     * @readonly
     * @var bool
     */
    public $matched;

/**
     * @param 0|positive-int $count
     * @param array<array<string|null>> $matches
     */
    public function __construct($count, array $matches)
    {
        $this->matches = $matches;
        $this->matched = (bool) $count;
        $this->count = $count;
    }
}
<?php

namespace Composer\Pcre;

final class ReplaceResult
{
    /**
     * @readonly
     * @var string
     */
    public $result;

/**
     * @readonly
     * @var 0|positive-int
     */
    public $count;

/**
     * @readonly
     * @var bool
     */
    public $matched;

/**
     * @param 0|positive-int $count
     * @param string $result
     */
    public function __construct($count, $result)
    {
        $this->count = $count;
        $this->matched = (bool) $count;
        $this->result = $result;
    }
}
<?php

namespace Composer\Pcre;

final class MatchWithOffsetsResult
{
    /**
     * An array of match group => pair of string matched + offset in bytes (or -1 if no match)
     *
     * @readonly
     * @var array<int|string, array{string|null, int}>
     * @phpstan-var array<int|string, array{string|null, int<-1, max>}>
     */
    public $matches;

/**
     * @readonly
     * @var bool
     */
    public $matched;

/**
     * @param 0|positive-int $count
     * @param array<array{string|null, int}> $matches
     * @phpstan-param array<int|string, array{string|null, int<-1, max>}> $matches
     */
    public function __construct($count, array $matches)
    {
        $this->matches = $matches;
        $this->matched = (bool) $count;
    }
}
<?php

// autoload_namespaces.php @generated by Composer

$vendorDir = dirname(dirname(__FILE__));
$baseDir = dirname($vendorDir);

return array(
    'cli' => array($vendorDir . '/wp-cli/php-cli-tools/lib'),
    'WP_CLI\\' => array($vendorDir . '/wp-cli/wp-cli/php'),
    'Requests' => array($vendorDir . '/rmccue/requests/library'),
    'Oxymel' => array($vendorDir . '/nb/oxymel'),
    'Mustache' => array($vendorDir . '/mustache/mustache/src'),
);
<?php