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<?php |
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/* |
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Plugin Name: Polylang |
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Plugin URI: http://wordpress.org/extend/plugins/polylang/ |
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Version: 0.8 |
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Author: F. Demarle |
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Description: Adds multilingual capability to Wordpress |
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*/ |
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|
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/* Copyright 2011-2012 F. Demarle |
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|
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License, published by |
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the Free Software Foundation, either version 2 of the License, or |
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(at your option) any later version. |
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|
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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|
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define('POLYLANG_VERSION', '0.8'); |
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define('PLL_MIN_WP_VERSION', '3.1'); |
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|
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define('POLYLANG_DIR', dirname(__FILE__)); // our directory |
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define('PLL_INC', POLYLANG_DIR.'/include'); |
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|
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define('POLYLANG_URL', WP_PLUGIN_URL.'/'.basename(POLYLANG_DIR)); // our url |
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|
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if (!defined('PLL_LOCAL_DIR')) |
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define('PLL_LOCAL_DIR', WP_CONTENT_DIR.'/polylang'); // default directory to store user data such as custom flags |
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|
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if (!defined('PLL_LOCAL_URL')) |
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define('PLL_LOCAL_URL', WP_CONTENT_URL.'/polylang'); // default url to access user data such as custom flags |
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|
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if (!defined('PLL_DISPLAY_ABOUT')) |
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define('PLL_DISPLAY_ABOUT', true); // displays the "About Polylang" metabox by default |
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|
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if (!defined('PLL_DISPLAY_ALL')) |
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define('PLL_DISPLAY_ALL', false); // diplaying posts & terms with undefined language is disabled by default (unsupported since 0.7) |
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|
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if (!defined('PLL_FILTER_HOME_URL')) |
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define('PLL_FILTER_HOME_URL', true); // filters the home url (to return the homepage in the right langage) by default |
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|
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if (!defined('PLL_SYNC')) |
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define('PLL_SYNC', true); // synchronisation is enabled by default |
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|
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require_once(PLL_INC.'/base.php'); |
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require_once(PLL_INC.'/widget.php'); |
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require_once(PLL_INC.'/calendar.php'); |
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|
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// controls the plugin, deals with activation, deactivation, upgrades, initialization as well as rewrite rules |
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class Polylang extends Polylang_Base { |
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|
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function __construct() { |
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parent::__construct(); |
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global $polylang; // globalize the variable to access it in the API |
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|
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// manages plugin activation and deactivation |
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register_activation_hook( __FILE__, array(&$this, 'activate') ); |
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register_deactivation_hook( __FILE__, array(&$this, 'deactivate') ); |
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|
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// stopping here if we are going to deactivate the plugin avoids breaking rewrite rules |
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if (isset($_GET['action']) && $_GET['action'] == 'deactivate' && isset($_GET['plugin']) && $_GET['plugin'] == 'polylang/polylang.php') |
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return; |
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|
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// manages plugin upgrade |
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add_filter('upgrader_post_install', array(&$this, 'post_upgrade')); |
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add_action('admin_init', array(&$this, 'admin_init')); |
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|
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// plugin and widget initialization |
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add_action('init', array(&$this, 'init'), 1000); // called just after the init in Polylang_Base |
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add_action('widgets_init', array(&$this, 'widgets_init')); |
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|
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// rewrite rules |
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add_filter('rewrite_rules_array', array(&$this, 'rewrite_rules_array' )); |
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|
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// separate admin and frontend |
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if (is_admin()) { |
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require_once(PLL_INC.'/admin.php'); |
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$polylang = new Polylang_Admin(); |
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} |
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else { |
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require_once(PLL_INC.'/core.php'); |
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$polylang = new Polylang_Core(); |
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} |
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|
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// loads the API |
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require_once(PLL_INC.'/api.php'); |
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} |
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|
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// plugin activation for multisite |
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function activate() { |
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global $wp_version, $wpdb; |
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$style = '<p style = "font-family: sans-serif; font-size: 12px; color: #333; margin: -5px">%s</p>'; |
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|
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if (version_compare($wp_version, PLL_MIN_WP_VERSION , '<')) |
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die (sprintf($style, sprintf(__('You are using WordPress %s. Polylang requires at least WordPress %s.', 'polylang'), $wp_version, PLL_MIN_WP_VERSION))); |
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|
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// check if it is a network activation - if so, run the activation function for each blog |
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if (is_multisite() && isset($_GET['networkwide']) && ($_GET['networkwide'] == 1)) { |
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foreach ($wpdb->get_col($wpdb->prepare("SELECT blog_id FROM $wpdb->blogs")) as $blog_id) { |
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switch_to_blog($blog_id); |
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$r = $this->_activate(); |
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} |
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restore_current_blog(); |
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} |
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else |
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$r = $this->_activate(); |
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|
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if (!$r) |
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die (sprintf($style, __('For some reasons, Polylang could not create a table in your database.', 'polylang'))); |
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} |
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|
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// plugin activation |
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function _activate() { |
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// create the termmeta table - not provided by WP by default - if it does not already exists |
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// uses exactly the same model as other meta tables to be able to use access functions provided by WP |
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global $wpdb; |
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$charset_collate = empty($wpdb->charset) ? '' : "DEFAULT CHARACTER SET $wpdb->charset"; |
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$charset_collate .= empty($wpdb->collate) ? '' : " COLLATE $wpdb->collate"; |
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$table = $wpdb->prefix . 'termmeta'; |
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|
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$r = $wpdb->query("CREATE TABLE IF NOT EXISTS $table ( |
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meta_id bigint(20) unsigned NOT NULL auto_increment, |
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term_id bigint(20) unsigned NOT NULL default '0', |
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meta_key varchar(255) default NULL, |
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meta_value longtext, |
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PRIMARY KEY (meta_id), |
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KEY term_id (term_id), |
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KEY meta_key (meta_key) |
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) $charset_collate;"); |
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|
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if ($r === false) |
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return false; |
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|
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// codex tells to use the init action to call register_taxonomy but I need it now for my rewrite rules |
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register_taxonomy('language', $this->post_types, array('label' => false, 'query_var'=>'lang')); |
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|
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// defines default values for options in case this is the first installation |
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$options = get_option('polylang'); |
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if (!$options) { |
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$options['browser'] = 1; // default language for the front page is set by browser preference |
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$options['rewrite'] = 1; // remove /language/ in permalinks (was the opposite before 0.7.2) |
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$options['hide_default'] = 0; // do not remove URL language information for default language |
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$options['force_lang'] = 0; // do not add URL language information when useless |
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$options['redirect_lang'] = 0; // do not redirect the language page to the homepage |
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} |
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$options['version'] = POLYLANG_VERSION; |
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update_option('polylang', $options); |
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|
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// add our rewrite rules |
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global $wp_rewrite; |
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$wp_rewrite->flush_rules(); |
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return true; |
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} |
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|
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// plugin deactivation for multisite |
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function deactivate() { |
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global $wpdb; |
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|
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// check if it is a network deactivation - if so, run the deactivation function for each blog |
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if (is_multisite() && isset($_GET['networkwide']) && ($_GET['networkwide'] == 1)) { |
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foreach ($wpdb->get_col($wpdb->prepare("SELECT blog_id FROM $wpdb->blogs")) as $blog_id) { |
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switch_to_blog($blog_id); |
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$this->_deactivate(); |
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} |
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restore_current_blog(); |
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} |
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else |
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$this->_deactivate(); |
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} |
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|
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// plugin deactivation |
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function _deactivate() { |
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global $wp_rewrite; |
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$wp_rewrite->flush_rules(); |
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} |
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|
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// restores the local_flags directory after upgrade from version 0.5.1 or older |
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function post_upgrade() { |
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// nothing to restore |
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if (!@is_dir($upgrade_dir = WP_CONTENT_DIR . '/upgrade/polylang/local_flags')) |
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return true; |
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|
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// don't move if the directory is empty |
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$contents = @scandir($upgrade_dir); |
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if (is_array($contents) && ($files = array_diff($contents, array(".", "..", ".DS_Store", "_notes", "Thumbs.db"))) && empty($files)) |
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return true; |
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|
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// move the directory to wp-content |
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if (!@rename($upgrade_dir, PLL_LOCAL_DIR)) |
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return new WP_Error('polylang_restore_error', sprintf('%s<br />%s', |
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__('Error: Restore of local flags failed!', 'polylang'), |
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sprintf(__('Please move your local flags from %s to %s', 'polylang'), esc_html($upgrade_dir), '<strong>'.esc_html(PLL_LOCAL_DIR).'</strong>') |
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)); |
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|
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@rmdir(WP_CONTENT_DIR . '/upgrade/polylang'); |
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return true; |
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} |
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|
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// upgrades from old translation used up to V0.4.4 to new model used in V0.5+ |
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function upgrade_translations($type, $ids) { |
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$listlanguages = $this->get_languages_list(); |
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foreach ($ids as $id) { |
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$lang = call_user_func(array(&$this, 'get_'.$type.'_language'), $id); |
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if (!$lang) |
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continue; |
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|
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$tr = array(); |
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foreach ($listlanguages as $language) { |
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if ($meta = get_metadata($type, $id, '_lang-'.$language->slug, true)) |
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$tr[$language->slug] = $meta; |
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} |
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|
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if (!empty($tr)) { |
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$tr = serialize(array_merge(array($lang->slug => $id), $tr)); |
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update_metadata($type, $id, '_translations', $tr); |
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} |
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} |
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} |
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|
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// manage upgrade even when it is done manually |
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function admin_init() { |
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$options = get_option('polylang'); |
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if (version_compare($options['version'], POLYLANG_VERSION, '<')) { |
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|
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if (version_compare($options['version'], '0.4', '<')) |
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$options['hide_default'] = 0; // option introduced in 0.4 |
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|
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// translation model changed in V0.5 |
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if (version_compare($options['version'], '0.5', '<')) { |
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$ids = get_posts(array('numberposts'=>-1, 'fields' => 'ids', 'post_type'=>'any', 'post_status'=>'any')); |
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$this->upgrade_translations('post', $ids); |
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$ids = get_terms($this->taxonomies, array('get'=>'all', 'fields'=>'ids')); |
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$this->upgrade_translations('term', $ids); |
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} |
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|
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// translation model changed in V0.5 |
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// deleting the old one has been delayed in V0.6 (just in case...) |
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if (version_compare($options['version'], '0.6', '<')) { |
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$listlanguages = $this->get_languages_list(); |
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|
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$ids = get_posts(array('numberposts'=> -1, 'fields' => 'ids', 'post_type'=>'any', 'post_status'=>'any')); |
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foreach ($ids as $id) { |
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foreach ($listlanguages as $lang) |
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delete_post_meta($id, '_lang-'.$lang->slug); |
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} |
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|
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$ids = get_terms($this->taxonomies, array('get'=>'all', 'fields'=>'ids')); |
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foreach ($ids as $id) { |
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foreach ($listlanguages as $lang) |
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delete_metadata('term', $id, '_lang-'.$lang->slug); |
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} |
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} |
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|
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if (version_compare($options['version'], '0.7', '<')) |
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$options['force_lang'] = 0; // option introduced in 0.7 |
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|
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if (version_compare($options['version'], '0.8', '<')) |
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$GLOBALS['wp_rewrite']->flush_rules(); // rewrite rules have been modified in 0.7.1 & 0.7.2 & 0.8 |
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|
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// string translation storage model changed and option added in 0.8 |
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if (version_compare($options['version'], '0.8dev1', '<')) { |
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if (function_exists('base64_decode')) { |
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$mo = new MO(); |
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foreach ($this->get_languages_list() as $language) { |
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$reader = new POMO_StringReader(base64_decode(get_option('polylang_mo'.$language->term_id))); |
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$mo->import_from_reader($reader); |
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$this->mo_export($mo, $language); |
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} |
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} |
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$options['redirect_lang'] = 0; // option introduced in 0.8 |
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} |
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|
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$options['version'] = POLYLANG_VERSION; |
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update_option('polylang', $options); |
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} |
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} |
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|
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// some initialization |
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function init() { |
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global $wpdb; |
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$wpdb->termmeta = $wpdb->prefix . 'termmeta'; // registers the termmeta table in wpdb |
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|
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// registers the language taxonomy |
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// codex: use the init action to call this function |
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register_taxonomy('language', $this->post_types, array( |
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'label' => false, |
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'public' => false, // avoid displaying the 'like post tags text box' in the quick edit |
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'query_var'=>'lang', |
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'update_count_callback' => '_update_post_term_count')); |
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|
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// optionaly removes 'language' in permalinks so that we get http://www.myblog/en/ instead of http://www.myblog/language/en/ |
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// the simple line of code is inspired by the WP No Category Base plugin: http://wordpresssupplies.com/wordpress-plugins/no-category-base/ |
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global $wp_rewrite; |
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$options = get_option('polylang'); |
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if ($options['rewrite'] && $wp_rewrite->extra_permastructs) |
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$wp_rewrite->extra_permastructs['language'][0] = '%language%'; |
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|
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load_plugin_textdomain('polylang', false, basename(POLYLANG_DIR).'/languages'); // plugin i18n |
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} |
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|
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// registers our widgets |
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function widgets_init() { |
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register_widget('Polylang_Widget'); |
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|
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// overwrites the calendar widget to filter posts by language |
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unregister_widget('WP_Widget_Calendar'); |
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register_widget('Polylang_Widget_Calendar'); |
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} |
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|
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// rewrites rules if pretty permalinks are used |
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// always make sure the default language is at the end in case the language information is hidden for default language |
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// thanks to brbrbr http://wordpress.org/support/topic/plugin-polylang-rewrite-rules-not-correct |
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function rewrite_rules_array($rules) { |
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$options = get_option('polylang'); |
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$newrules = array(); |
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$languages = array(); |
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|
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// don't modify the rules if there is no languages created |
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if (!($listlanguages = $this->get_languages_list())) |
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return $rules; |
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|
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foreach ($listlanguages as $language) |
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if (!$options['hide_default'] || $options['default_lang'] != $language->slug) |
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$languages[] = $language->slug; |
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|
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if ($languages) { |
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$slug = '('.implode('|', $languages).')/'; |
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$slug = $options['rewrite'] ? $slug : 'language/'.$slug; |
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} |
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|
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foreach ($rules as $key => $rule) { |
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// rules which *always* need the language code |
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$to_rewrite = in_array($key, array('feed/(feed|rdf|rss|rss2|atom)/?$', '(feed|rdf|rss|rss2|atom)/?$', 'page/?([0-9]{1,})/?$')) || |
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strpos($rule, 'withcomments=1') || strpos($rule, 'post_format=') || strpos($rule, 'author_name=') || strpos($rule, 'post_type=') || |
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strpos($rule, 'year=') && !(strpos($rule, 'p=') || strpos($rule, 'name=') || strpos($rule, 'page=') || strpos($rule, 'cpage=')); |
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|
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// suppress the rules created by WordPress for our taxonomy |
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if (strpos($rule, 'lang=')) |
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unset($rules[$key]); |
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|
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// special case for pages which do not accept adding the lang parameter |
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elseif ($options['force_lang'] && strpos($rule, 'pagename')) { |
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if (isset($slug)) |
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$newrules[$slug.$key] = str_replace(array('[4]', '[3]', '[2]', '[1]'), array('[5]', '[4]', '[3]', '[2]'), $rule); // hopefully it is sufficient ! |
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|
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if (!$options['hide_default']) |
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unset($rules[$key]); // now useless |
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} |
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|
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// rewrite rules filtered by language |
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elseif ($to_rewrite || ($options['force_lang'] && !strpos($rule, 'robots'))) { |
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if (isset($slug)) |
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$newrules[$slug.$key] = str_replace(array('[8]', '[7]', '[6]', '[5]', '[4]', '[3]', '[2]', '[1]', '?'), |
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array('[9]', '[8]', '[7]', '[6]', '[5]', '[4]', '[3]', '[2]', '?lang=$matches[1]&'), $rule); // hopefully it is sufficient ! |
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|
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if ($options['hide_default']) |
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$newrules[$key] = str_replace('?', '?lang='.$options['default_lang'].'&', $rule); |
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|
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unset($rules[$key]); // now useless |
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} |
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} |
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// important to put home rewrite rule before unmodified rules |
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return $newrules + array($slug.'?$' => 'index.php?lang=$matches[1]') + $rules; |
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} |
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|
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} // class Polylang |
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|
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if (class_exists("Polylang")) |
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new Polylang(); |
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?> |
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|
