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<?php |
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/* HEADER */ // phpcs:ignore |
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/** |
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* This class selects the package version for the autoloader. |
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*/ |
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class Autoloader_Handler { |
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// The name of the autoloader function registered by v1.* autoloaders. |
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const V1_AUTOLOADER_NAME = 'Automattic\Jetpack\Autoloader\autoloader'; |
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/* |
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* The autoloader function for v2.* autoloaders is named __NAMESPACE__ . \autoloader. |
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* The namespace is defined in AutoloadGenerator as |
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* 'Automattic\Jetpack\Autoloader\jp' plus a unique suffix. |
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*/ |
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const V2_AUTOLOADER_BASE = 'Automattic\Jetpack\Autoloader\jp'; |
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const AUTOLOAD_GENERATOR_CLASS_NAME = 'Automattic\Jetpack\Autoloader\AutoloadGenerator'; |
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/** |
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* The Plugins_Handler object. |
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* |
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* @var Plugins_Handler |
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*/ |
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private $plugins_handler = null; |
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/** |
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* The Version_Selector object. |
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* |
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* @var Version_Selector |
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*/ |
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private $version_selector = null; |
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/** |
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* The constructor. |
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* |
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* @param Plugins_Handler $plugins_handler The Plugins_Handler object. |
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* @param Version_Selector $version_selector The Version_Selector object. |
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*/ |
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public function __construct( $plugins_handler, $version_selector ) { |
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$this->plugins_handler = $plugins_handler; |
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$this->version_selector = $version_selector; |
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} |
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/** |
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* Finds the latest installed autoloader. |
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*/ |
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public function find_latest_autoloader() { |
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global $jetpack_autoloader_latest_version; |
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$current_autoloader_path = trailingslashit( dirname( __FILE__ ) ) . 'autoload_packages.php'; |
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$current_autoloader_path = str_replace( '\\', '/', $current_autoloader_path ); |
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$selected_autoloader_version = null; |
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$selected_autoloader_path = null; |
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$active_plugins_paths = $this->plugins_handler->get_all_active_plugins_paths(); |
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foreach ( $active_plugins_paths as $plugin_path ) { |
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$classmap_path = trailingslashit( $plugin_path ) . 'vendor/composer/jetpack_autoload_classmap.php'; |
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if ( file_exists( $classmap_path ) ) { |
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$packages = require $classmap_path; |
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$compare_version = $packages[ self::AUTOLOAD_GENERATOR_CLASS_NAME ]['version']; |
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$compare_path = trailingslashit( $plugin_path ) . 'vendor/autoload_packages.php'; |
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if ( $this->version_selector->is_version_update_required( $selected_autoloader_version, $compare_version ) ) { |
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$selected_autoloader_version = $compare_version; |
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$selected_autoloader_path = $compare_path; |
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} |
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} |
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} |
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$jetpack_autoloader_latest_version = $selected_autoloader_version; |
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// $current_autoloader_path is already loaded |
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if ( $current_autoloader_path !== $selected_autoloader_path ) { |
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require $selected_autoloader_path; |
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} |
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} |
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/** |
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* Get this autoloader's package version. |
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* |
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* @return String The autoloader's package version. |
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*/ |
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public function get_current_autoloader_version() { |
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$classmap_file = trailingslashit( dirname( __FILE__ ) ) . 'composer/jetpack_autoload_classmap.php'; |
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$autoloader_packages = require $classmap_file; |
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return $autoloader_packages[ self::AUTOLOAD_GENERATOR_CLASS_NAME ]['version']; |
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} |
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/** |
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* Updates the spl autoloader chain: |
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* - Registers this namespace's autoloader function. |
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* - If a v1 autoloader function is registered, moves it to the end of the chain. |
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* - Removes any other v2 autoloader functions that have already been registered. This |
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* can occur when the autoloader is being reset by an activating plugin. |
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*/ |
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public function update_autoloader_chain() { |
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spl_autoload_register( __NAMESPACE__ . '\autoloader' ); |
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$autoload_chain = spl_autoload_functions(); |
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foreach ( $autoload_chain as $autoloader ) { |
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if ( ! is_string( $autoloader ) ) { |
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/* |
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* The Jetpack Autoloader functions are registered as strings, so |
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* just continue if $autoloader isn't a string. |
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*/ |
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continue; |
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} |
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if ( self::V1_AUTOLOADER_NAME === $autoloader ) { |
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// Move the v1.* autoloader function to the end of the spl autoloader chain. |
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spl_autoload_unregister( $autoloader ); |
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spl_autoload_register( $autoloader ); |
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} elseif ( |
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self::V2_AUTOLOADER_BASE === substr( $autoloader, 0, strlen( self::V2_AUTOLOADER_BASE ) ) |
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&& __NAMESPACE__ !== substr( $autoloader, 0, strlen( __NAMESPACE__ ) ) |
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) { |
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// Unregister any other v2.* autoloader functions if they're in the chain. |
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spl_autoload_unregister( $autoloader ); |
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} |
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} |
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} |
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} |
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Automattic /
jetpack
