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<?php
/*
Plugin Name: Polylang
Plugin URI: http://polylang.wordpress.com/
Version: 1.6.1
Author: Frédéric Demarle
Description: Adds multilingual capability to WordPress
Text Domain: polylang
Domain Path: /languages
*/
/*
* Copyright 2011-2014 Frédéric Demarle
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*
*/
// don't access directly
if (!function_exists('add_action'))
exit();
define('POLYLANG_VERSION', '1.6.1');
define('PLL_MIN_WP_VERSION', '3.5');
define('POLYLANG_BASENAME', plugin_basename(__FILE__)); // plugin name as known by WP
define('POLYLANG_DIR', dirname(__FILE__)); // our directory
define('PLL_INC', POLYLANG_DIR . '/include');
define('PLL_FRONT_INC', POLYLANG_DIR . '/frontend');
define('PLL_ADMIN_INC', POLYLANG_DIR . '/admin');
// 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');
// our url. Don't use WP_PLUGIN_URL http://wordpress.org/support/topic/ssl-doesnt-work-properly
define('POLYLANG_URL', plugins_url('/' . basename(POLYLANG_DIR)));
// default url to access user data such as custom flags
if (!defined('PLL_LOCAL_URL'))
define('PLL_LOCAL_URL', content_url('/polylang'));
/*
* controls the plugin, as well as activation, and deactivation
*
* @since 0.1
*/
class Polylang {
/*
* constructor
*
* @since 0.1
*/
public function __construct() {
// FIXME maybe not available on every installations but widely used by WP plugins
spl_autoload_register(array(&$this, 'autoload')); // autoload classes
// manages plugin activation and deactivation
register_activation_hook( __FILE__, array(&$this, 'activate'));
register_deactivation_hook( __FILE__, array(&$this, 'deactivate'));
// stopping here if we are going to deactivate the plugin (avoids breaking rewrite rules)
if (isset($_GET['action'], $_GET['plugin']) && 'deactivate' == $_GET['action'] && plugin_basename(__FILE__) == $_GET['plugin'])
return;
// blog creation on multisite
add_action('wpmu_new_blog', array(&$this, 'wpmu_new_blog'), 5); // before WP attempts to send mails which can break on some PHP versions
// 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)
new PLL_OLT_Manager();
// loads the API
require_once(PLL_INC.'/api.php');
// WPML API
if (!defined('PLL_WPML_COMPAT') || PLL_WPML_COMPAT)
require_once (PLL_INC.'/wpml-compat.php');
// extra code for compatibility with some plugins
if (!defined('PLL_PLUGINS_COMPAT') || PLL_PLUGINS_COMPAT)
new PLL_Plugins_Compat();
}
/*
* activation or deactivation for all blogs
*
* @since 1.2
*
* @param string $what either 'activate' or 'deactivate'
*/
protected function do_for_all_blogs($what) {
// network
if (is_multisite() && isset($_GET['networkwide']) && ($_GET['networkwide'] == 1)) {
global $wpdb;
foreach ($wpdb->get_col("SELECT blog_id FROM $wpdb->blogs") as $blog_id) {
switch_to_blog($blog_id);
$what == 'activate' ? $this->_activate() : $this->_deactivate();
}
restore_current_blog();
}
// single blog
else
$what == 'activate' ? $this->_activate() : $this->_deactivate();
}
/*
* plugin activation for multisite
*
* @since 0.1
*/
public function activate() {
global $wp_version;
$this->define_constants();
load_plugin_textdomain('polylang', false, basename(POLYLANG_DIR).'/languages'); // plugin i18n
if (version_compare($wp_version, PLL_MIN_WP_VERSION , '<'))
die (sprintf('<p style = "font-family: sans-serif; font-size: 12px; color: #333; margin: -5px">%s</p>',
sprintf(__('You are using WordPress %s. Polylang requires at least WordPress %s.', 'polylang'),
esc_html($wp_version),
PLL_MIN_WP_VERSION
)
));
$this->do_for_all_blogs('activate');
}
/*
* plugin activation
*
* @since 0.5
*/
protected function _activate() {
global $polylang;
if ($options = get_option('polylang')) {
// plugin upgrade
if (version_compare($options['version'], POLYLANG_VERSION, '<')) {
$upgrade = new PLL_Upgrade($options);
$upgrade->upgrade_at_activation();
}
}
// defines default values for options in case this is the first installation
else {
$options = array(
'browser' => 1, // default language for the front page is set by browser preference
'rewrite' => 1, // remove /language/ in permalinks (was the opposite before 0.7.2)
'hide_default' => 0, // do not remove URL language information for default language
'force_lang' => 0, // do not add URL language information when useless
'redirect_lang' => 0, // do not redirect the language page to the homepage
'media_support' => 1, // support languages and translation for media by default
'sync' => array(), // synchronisation is disabled by default (was the opposite before 1.2)
'post_types' => array_values(get_post_types(array('_builtin' => false, 'show_ui => true'))),
'taxonomies' => array_values(get_taxonomies(array('_builtin' => false, 'show_ui => true'))),
'domains' => array(),
'version' => POLYLANG_VERSION,
);
update_option('polylang', $options);
}
// always provide a global $polylang object and add our rewrite rules if needed
$polylang = new StdClass();
$polylang->options = &$options;
$polylang->model = new PLL_Admin_Model($options);
$polylang->links_model = $polylang->model->get_links_model();
do_action('pll_init');
flush_rewrite_rules();
}
/*
* plugin deactivation for multisite
*
* @since 0.1
*/
public function deactivate() {
$this->do_for_all_blogs('deactivate');
}
/*
* plugin deactivation
*
* @since 0.5
*/
protected function _deactivate() {
flush_rewrite_rules();
}
/*
* blog creation on multisite (to set default options)
*
* @since 0.9.4
*
* @param int $blog_id
*/
public function wpmu_new_blog($blog_id) {
switch_to_blog($blog_id);
$this->_activate();
restore_current_blog();
}
/*
* autoload classes
*
* @since 1.2
*
* @param string $class
*/
public function autoload($class) {
$class = str_replace('_', '-', strtolower(substr($class, 4)));
foreach (array(PLL_INC, PLL_FRONT_INC, PLL_ADMIN_INC) as $path) {
if (file_exists($file = "$path/$class.php")) {
require_once($file);
break;
}
}
}
/*
* defines constants
* may be overriden by a plugin if set before plugins_loaded, 1
*
* @since 1.6
*/
protected function define_constants() {
// cookie name. no cookie will be used if set to false
if (!defined('PLL_COOKIE'))
define('PLL_COOKIE', 'pll_language');
// backward compatibility WP < 3.6
// the search form js is no more needed in WP 3.6+ except if the search form is hardcoded elsewhere than in searchform.php
if (!defined('PLL_SEARCH_FORM_JS') && !version_compare($GLOBALS['wp_version'], '3.6', '<'))
define('PLL_SEARCH_FORM_JS', false);
// avoid loading polylang admin for frontend ajax requests
// 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
if (!defined('PLL_AJAX_ON_FRONT')) {
$in = isset($_REQUEST['action']) && in_array($_REQUEST['action'], array('upload-attachment', 'customize_save'));
define('PLL_AJAX_ON_FRONT', defined('DOING_AJAX') && DOING_AJAX && empty($_REQUEST['pll_ajax_backend']) && !$in);
}
// admin
if (!defined('PLL_ADMIN'))
define('PLL_ADMIN', defined('DOING_CRON') || (is_admin() && !PLL_AJAX_ON_FRONT));
// settings page whatever the tab
if (!defined('PLL_SETTINGS'))
define('PLL_SETTINGS', is_admin() && isset($_GET['page']) && $_GET['page'] == 'mlang');
}
/*
* Polylang initialization
* setups models and separate admin and frontend
*
* @since 1.2
*/
public function init() {
global $polylang;
$this->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;
}
$class = apply_filters('pll_model', PLL_SETTINGS ? 'PLL_Admin_Model' : 'PLL_Model');
$model = new $class($options);
$links_model = $model->get_links_model();
if (PLL_ADMIN) {
$polylang = new PLL_Admin($links_model);
$polylang->init();
}
// do nothing on frontend if no language is defined
elseif ($model->get_languages_list()) {
$polylang = new PLL_Frontend($links_model);
$polylang->init();
}
do_action('pll_init');
if (!$model->get_languages_list())
do_action('pll_no_language_defined'); // to load overriden textdomains
// load wpml-config.xml
if (!defined('PLL_WPML_COMPAT') || PLL_WPML_COMPAT)
new PLL_WPML_Config;
}
}
new Polylang();