name : class-polylang.php <?php if ( ! defined( 'ABSPATH' ) ) { exit; // Don't access directly }; // Default directory to store user data such as custom flags if ( ! defined( 'PLL_LOCAL_DIR' ) ) { define( 'PLL_LOCAL_DIR', WP_CONTENT_DIR . '/polylang' ); } // Includes local config file if exists if ( file_exists( PLL_LOCAL_DIR . '/pll-config.php' ) ) { include_once PLL_LOCAL_DIR . '/pll-config.php'; } /** * Controls the plugin, as well as activation, and deactivation * * @since 0.1 */ class Polylang { /** * Constructor * * @since 0.1 */ public function __construct() { require_once PLL_INC . '/functions.php'; // VIP functions spl_autoload_register( array( $this, 'autoload' ) ); // Autoload classes $install = new PLL_Install( POLYLANG_BASENAME ); // Stopping here if we are going to deactivate the plugin ( avoids breaking rewrite rules ) if ( $install->is_deactivation() ) { return; } // Plugin initialization // Take no action before all plugins are loaded add_action( 'plugins_loaded', array( $this, 'init' ), 1 ); // Override load text domain waiting for the language to be defined // Here for plugins which load text domain as soon as loaded :( if ( ! defined( 'PLL_OLT' ) || PLL_OLT ) { PLL_OLT_Manager::instance(); } // Extra code for compatibility with some plugins // Loaded as soon as possible as we may need to act before other plugins are loaded if ( ! defined( 'PLL_PLUGINS_COMPAT' ) || PLL_PLUGINS_COMPAT ) { PLL_Plugins_Compat::instance(); } } /** * Autoload classes * * @since 1.2 * * @param string $class */ public function autoload( $class ) { // Not a Polylang class if ( 0 !== strncmp( 'PLL_', $class, 4 ) ) { return; } $class = str_replace( '_', '-', strtolower( substr( $class, 4 ) ) ); $dirs = array(); $parts = explode( '-', $class ); $parts = array_values( array_diff( $parts, array( 'frontend', 'admin', 'settings', 'advanced' ) ) ); if ( isset( $parts[0] ) ) { $dirs[] = PLL_MODULES_INC . "/{$parts[0]}"; if ( isset( $parts[1] ) ) { $dirs[] = PLL_MODULES_INC . "/{$parts[0]}-{$parts[1]}"; if ( isset( $parts[2] ) && in_array( $parts[1], array( 'post', 'term' ) ) ) { $dirs[] = PLL_MODULES_INC . "/{$parts[0]}-{$parts[2]}"; } } } $dirs = array_merge( array( PLL_FRONT_INC, PLL_MODULES_INC, ), $dirs, array( PLL_MODULES_INC . '/plugins', PLL_INSTALL_INC, PLL_ADMIN_INC, PLL_SETTINGS_INC, PLL_INC, ) ); foreach ( $dirs as $dir ) { if ( file_exists( $file = "$dir/$class.php" ) ) { require_once $file; return; } } } /** * Tells whether the current request is an ajax request on frontend or not * * @since 2.2 * * @return bool */ public static function is_ajax_on_front() { // Special test for plupload which does not use jquery ajax and thus does not pass our ajax prefilter // Special test for customize_save done in frontend but for which we want to load the admin $in = isset( $_REQUEST['action'] ) && in_array( sanitize_key( $_REQUEST['action'] ), array( 'upload-attachment', 'customize_save' ) ); // phpcs:ignore WordPress.Security.NonceVerification $is_ajax_on_front = wp_doing_ajax() && empty( $_REQUEST['pll_ajax_backend'] ) && ! $in; // phpcs:ignore WordPress.Security.NonceVerification /** * Filters whether the current request is an ajax request on front. * * @since 2.3 * * @param bool $is_ajax_on_front Whether the current request is an ajax request on front. */ return apply_filters( 'pll_is_ajax_on_front', $is_ajax_on_front ); } /** * Is the current request a REST API request? * Inspired by WP::parse_request() * Needed because at this point, the constant REST_REQUEST is not defined yet * * @since 2.4.1 * * @return bool */ public static function is_rest_request() { $home_path = trim( wp_parse_url( home_url(), PHP_URL_PATH ), '/' ); $home_path_regex = sprintf( '|^%s|i', preg_quote( $home_path, '|' ) ); $req_uri = trim( wp_parse_url( pll_get_requested_url(), PHP_URL_PATH ), '/' ); $req_uri = preg_replace( $home_path_regex, '', $req_uri ); $req_uri = trim( $req_uri, '/' ); $req_uri = str_replace( 'index.php', '', $req_uri ); $req_uri = trim( $req_uri, '/' ); return 0 === strpos( $req_uri, rest_get_url_prefix() . '/' ); } /** * Defines constants * May be overridden by a plugin if set before plugins_loaded, 1 * * @since 1.6 */ public static function define_constants() { // Cookie name. no cookie will be used if set to false if ( ! defined( 'PLL_COOKIE' ) ) { define( 'PLL_COOKIE', 'pll_language' ); } // Backward compatibility with Polylang < 2.3 if ( ! defined( 'PLL_AJAX_ON_FRONT' ) ) { define( 'PLL_AJAX_ON_FRONT', self::is_ajax_on_front() ); } // Admin if ( ! defined( 'PLL_ADMIN' ) ) { define( 'PLL_ADMIN', wp_doing_cron() || ( defined( 'WP_CLI' ) && WP_CLI ) || ( is_admin() && ! PLL_AJAX_ON_FRONT ) ); } // Settings page whatever the tab if ( ! defined( 'PLL_SETTINGS' ) ) { define( 'PLL_SETTINGS', is_admin() && ( ( isset( $_GET['page'] ) && 0 === strpos( sanitize_key( $_GET['page'] ), 'mlang' ) ) || ! empty( $_REQUEST['pll_ajax_settings'] ) ) ); // phpcs:ignore WordPress.Security.NonceVerification } } /** * Polylang initialization * setups models and separate admin and frontend * * @since 1.2 */ public function init() { global $polylang; self::define_constants(); $options = get_option( 'polylang' ); // Plugin upgrade if ( $options && version_compare( $options['version'], POLYLANG_VERSION, '<' ) ) { $upgrade = new PLL_Upgrade( $options ); if ( ! $upgrade->upgrade() ) { // If the version is too old return; } } // Make sure that this filter is *always* added before PLL_Model::get_languages_list() is called for the first time add_filter( 'pll_languages_list', array( 'PLL_Static_Pages', 'pll_languages_list' ), 2, 2 ); // Before PLL_Links_Model /** * Filter the model class to use * /!\ this filter is fired *before* the $polylang object is available * * @since 1.5 * * @param string $class either PLL_Model or PLL_Admin_Model */ $class = apply_filters( 'pll_model', PLL_SETTINGS ? 'PLL_Admin_Model' : 'PLL_Model' ); $model = new $class( $options ); $links_model = $model->get_links_model(); if ( ! $model->get_languages_list() ) { /** * Fires when no language has been defined yet * Used to load overridden textdomains * * @since 1.2 */ do_action( 'pll_no_language_defined' ); } $class = ''; if ( PLL_SETTINGS ) { $class = 'PLL_Settings'; } elseif ( PLL_ADMIN ) { $class = 'PLL_Admin'; } elseif ( self::is_rest_request() ) { $class = 'PLL_REST_Request'; } elseif ( $model->get_languages_list() && empty( $_GET['deactivate-polylang'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification $class = 'PLL_Frontend'; } /** * Filters the class to use to instantiate the $polylang object * * @since 2.6 * * @param string $class A class name. */ $class = apply_filters( 'pll_context', $class ); if ( ! empty( $class ) ) { $polylang = new $class( $links_model ); /** * Fires after the $polylang object is created and before the API is loaded * * @since 2.0 * * @param object $polylang */ do_action_ref_array( 'pll_pre_init', array( &$polylang ) ); require_once PLL_INC . '/api.php'; // Loads the API if ( ! defined( 'PLL_WPML_COMPAT' ) || PLL_WPML_COMPAT ) { PLL_WPML_Compat::instance(); // WPML API PLL_WPML_Config::instance(); // wpml-config.xml } $polylang->init(); /** * Fires after the $polylang object and the API is loaded * * @since 1.7 * * @param object $polylang */ do_action_ref_array( 'pll_init', array( &$polylang ) ); } } }