| 1 |
<?php |
| 2 |
/* |
| 3 |
Plugin Name: Polylang |
| 4 |
Plugin URI: http://wordpress.org/extend/plugins/polylang/ |
| 5 |
Version: 0.8.2 |
| 6 |
Author: F. Demarle |
| 7 |
Description: Adds multilingual capability to Wordpress |
| 8 |
*/ |
| 9 |
|
| 10 |
/* Copyright 2011-2012 F. Demarle |
| 11 |
|
| 12 |
This program is free software; you can redistribute it and/or modify |
| 13 |
it under the terms of the GNU General Public License, published by |
| 14 |
the Free Software Foundation, either version 2 of the License, or |
| 15 |
(at your option) any later version. |
| 16 |
|
| 17 |
This program is distributed in the hope that it will be useful, |
| 18 |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 |
GNU General Public License for more details. |
| 21 |
|
| 22 |
You should have received a copy of the GNU General Public License |
| 23 |
along with this program; if not, write to the Free Software |
| 24 |
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 25 |
*/ |
| 26 |
|
| 27 |
define('POLYLANG_VERSION', '0.8.2'); |
| 28 |
define('PLL_MIN_WP_VERSION', '3.1'); |
| 29 |
|
| 30 |
define('POLYLANG_DIR', dirname(__FILE__)); // our directory |
| 31 |
define('PLL_INC', POLYLANG_DIR.'/include'); |
| 32 |
|
| 33 |
define('POLYLANG_URL', WP_PLUGIN_URL.'/'.basename(POLYLANG_DIR)); // our url |
| 34 |
|
| 35 |
if (!defined('PLL_LOCAL_DIR')) |
| 36 |
define('PLL_LOCAL_DIR', WP_CONTENT_DIR.'/polylang'); // default directory to store user data such as custom flags |
| 37 |
|
| 38 |
if (!defined('PLL_LOCAL_URL')) |
| 39 |
define('PLL_LOCAL_URL', WP_CONTENT_URL.'/polylang'); // default url to access user data such as custom flags |
| 40 |
|
| 41 |
if (!defined('PLL_DISPLAY_ABOUT')) |
| 42 |
define('PLL_DISPLAY_ABOUT', true); // displays the "About Polylang" metabox by default |
| 43 |
|
| 44 |
if (!defined('PLL_DISPLAY_ALL')) |
| 45 |
define('PLL_DISPLAY_ALL', false); // diplaying posts & terms with undefined language is disabled by default (unsupported since 0.7) |
| 46 |
|
| 47 |
if (!defined('PLL_FILTER_HOME_URL')) |
| 48 |
define('PLL_FILTER_HOME_URL', true); // filters the home url (to return the homepage in the right langage) by default |
| 49 |
|
| 50 |
if (!defined('PLL_SYNC')) |
| 51 |
define('PLL_SYNC', true); // synchronisation is enabled by default |
| 52 |
|
| 53 |
require_once(PLL_INC.'/base.php'); |
| 54 |
require_once(PLL_INC.'/widget.php'); |
| 55 |
require_once(PLL_INC.'/calendar.php'); |
| 56 |
|
| 57 |
// controls the plugin, deals with activation, deactivation, upgrades, initialization as well as rewrite rules |
| 58 |
class Polylang extends Polylang_Base { |
| 59 |
|
| 60 |
function __construct() { |
| 61 |
parent::__construct(); |
| 62 |
global $polylang; // globalize the variable to access it in the API |
| 63 |
|
| 64 |
// manages plugin activation and deactivation |
| 65 |
register_activation_hook( __FILE__, array(&$this, 'activate') ); |
| 66 |
register_deactivation_hook( __FILE__, array(&$this, 'deactivate') ); |
| 67 |
|
| 68 |
// stopping here if we are going to deactivate the plugin avoids breaking rewrite rules |
| 69 |
if (isset($_GET['action']) && $_GET['action'] == 'deactivate' && isset($_GET['plugin']) && $_GET['plugin'] == 'polylang/polylang.php') |
| 70 |
return; |
| 71 |
|
| 72 |
// manages plugin upgrade |
| 73 |
add_filter('upgrader_post_install', array(&$this, 'post_upgrade')); |
| 74 |
add_action('admin_init', array(&$this, 'admin_init')); |
| 75 |
|
| 76 |
// plugin and widget initialization |
| 77 |
add_action('init', array(&$this, 'init')); |
| 78 |
add_action('widgets_init', array(&$this, 'widgets_init')); |
| 79 |
add_action('wp_loaded', array(&$this, 'prepare_rewrite_rules'), 20); // after Polylang_base::add_post_types_taxonomies |
| 80 |
|
| 81 |
// separate admin and frontend |
| 82 |
if (is_admin() && isset($_GET['page']) && $_GET['page'] == 'mlang') { |
| 83 |
require_once(PLL_INC.'/admin-base.php'); |
| 84 |
require_once(PLL_INC.'/admin.php'); |
| 85 |
$polylang = new Polylang_Admin(); |
| 86 |
} |
| 87 |
elseif (is_admin()) { |
| 88 |
require_once(PLL_INC.'/admin-base.php'); |
| 89 |
require_once(PLL_INC.'/admin-filters.php'); |
| 90 |
$polylang = new Polylang_Admin_Filters(); |
| 91 |
} |
| 92 |
else { |
| 93 |
require_once(PLL_INC.'/core.php'); |
| 94 |
$polylang = new Polylang_Core(); |
| 95 |
} |
| 96 |
|
| 97 |
// loads the API |
| 98 |
require_once(PLL_INC.'/api.php'); |
| 99 |
} |
| 100 |
|
| 101 |
// plugin activation for multisite |
| 102 |
function activate() { |
| 103 |
global $wp_version, $wpdb; |
| 104 |
$style = '<p style = "font-family: sans-serif; font-size: 12px; color: #333; margin: -5px">%s</p>'; |
| 105 |
|
| 106 |
if (version_compare($wp_version, PLL_MIN_WP_VERSION , '<')) |
| 107 |
die (sprintf($style, sprintf(__('You are using WordPress %s. Polylang requires at least WordPress %s.', 'polylang'), $wp_version, PLL_MIN_WP_VERSION))); |
| 108 |
|
| 109 |
// check if it is a network activation - if so, run the activation function for each blog |
| 110 |
if (is_multisite() && isset($_GET['networkwide']) && ($_GET['networkwide'] == 1)) { |
| 111 |
foreach ($wpdb->get_col($wpdb->prepare("SELECT blog_id FROM $wpdb->blogs")) as $blog_id) { |
| 112 |
switch_to_blog($blog_id); |
| 113 |
$r = $this->_activate(); |
| 114 |
} |
| 115 |
restore_current_blog(); |
| 116 |
} |
| 117 |
else |
| 118 |
$r = $this->_activate(); |
| 119 |
|
| 120 |
if (!$r) |
| 121 |
die (sprintf($style, __('For some reasons, Polylang could not create a table in your database.', 'polylang'))); |
| 122 |
} |
| 123 |
|
| 124 |
// plugin activation |
| 125 |
function _activate() { |
| 126 |
// create the termmeta table - not provided by WP by default - if it does not already exists |
| 127 |
// uses exactly the same model as other meta tables to be able to use access functions provided by WP |
| 128 |
global $wpdb; |
| 129 |
$charset_collate = empty($wpdb->charset) ? '' : "DEFAULT CHARACTER SET $wpdb->charset"; |
| 130 |
$charset_collate .= empty($wpdb->collate) ? '' : " COLLATE $wpdb->collate"; |
| 131 |
$table = $wpdb->prefix . 'termmeta'; |
| 132 |
|
| 133 |
$r = $wpdb->query("CREATE TABLE IF NOT EXISTS $table ( |
| 134 |
meta_id bigint(20) unsigned NOT NULL auto_increment, |
| 135 |
term_id bigint(20) unsigned NOT NULL default '0', |
| 136 |
meta_key varchar(255) default NULL, |
| 137 |
meta_value longtext, |
| 138 |
PRIMARY KEY (meta_id), |
| 139 |
KEY term_id (term_id), |
| 140 |
KEY meta_key (meta_key) |
| 141 |
) $charset_collate;"); |
| 142 |
|
| 143 |
if ($r === false) |
| 144 |
return false; |
| 145 |
|
| 146 |
// codex tells to use the init action to call register_taxonomy but I need it now for my rewrite rules |
| 147 |
register_taxonomy('language', null , array('label' => false, 'query_var'=>'lang')); |
| 148 |
|
| 149 |
// defines default values for options in case this is the first installation |
| 150 |
$options = get_option('polylang'); |
| 151 |
if (!$options) { |
| 152 |
$options['browser'] = 1; // default language for the front page is set by browser preference |
| 153 |
$options['rewrite'] = 1; // remove /language/ in permalinks (was the opposite before 0.7.2) |
| 154 |
$options['hide_default'] = 0; // do not remove URL language information for default language |
| 155 |
$options['force_lang'] = 0; // do not add URL language information when useless |
| 156 |
$options['redirect_lang'] = 0; // do not redirect the language page to the homepage |
| 157 |
} |
| 158 |
$options['version'] = POLYLANG_VERSION; |
| 159 |
update_option('polylang', $options); |
| 160 |
|
| 161 |
// add our rewrite rules |
| 162 |
$this->add_post_types_taxonomies(); |
| 163 |
$this->prepare_rewrite_rules(); |
| 164 |
flush_rewrite_rules(); |
| 165 |
return true; |
| 166 |
} |
| 167 |
|
| 168 |
// plugin deactivation for multisite |
| 169 |
function deactivate() { |
| 170 |
global $wpdb; |
| 171 |
|
| 172 |
// check if it is a network deactivation - if so, run the deactivation function for each blog |
| 173 |
if (is_multisite() && isset($_GET['networkwide']) && ($_GET['networkwide'] == 1)) { |
| 174 |
foreach ($wpdb->get_col($wpdb->prepare("SELECT blog_id FROM $wpdb->blogs")) as $blog_id) { |
| 175 |
switch_to_blog($blog_id); |
| 176 |
$this->_deactivate(); |
| 177 |
} |
| 178 |
restore_current_blog(); |
| 179 |
} |
| 180 |
else |
| 181 |
$this->_deactivate(); |
| 182 |
} |
| 183 |
|
| 184 |
// plugin deactivation |
| 185 |
function _deactivate() { |
| 186 |
flush_rewrite_rules(); |
| 187 |
} |
| 188 |
|
| 189 |
// restores the local_flags directory after upgrade from version 0.5.1 or older |
| 190 |
function post_upgrade() { |
| 191 |
// nothing to restore |
| 192 |
if (!@is_dir($upgrade_dir = WP_CONTENT_DIR . '/upgrade/polylang/local_flags')) |
| 193 |
return true; |
| 194 |
|
| 195 |
// don't move if the directory is empty |
| 196 |
$contents = @scandir($upgrade_dir); |
| 197 |
if (is_array($contents) && ($files = array_diff($contents, array(".", "..", ".DS_Store", "_notes", "Thumbs.db"))) && empty($files)) |
| 198 |
return true; |
| 199 |
|
| 200 |
// move the directory to wp-content |
| 201 |
if (!@rename($upgrade_dir, PLL_LOCAL_DIR)) |
| 202 |
return new WP_Error('polylang_restore_error', sprintf('%s<br />%s', |
| 203 |
__('Error: Restore of local flags failed!', 'polylang'), |
| 204 |
sprintf(__('Please move your local flags from %s to %s', 'polylang'), esc_html($upgrade_dir), '<strong>'.esc_html(PLL_LOCAL_DIR).'</strong>') |
| 205 |
)); |
| 206 |
|
| 207 |
@rmdir(WP_CONTENT_DIR . '/upgrade/polylang'); |
| 208 |
return true; |
| 209 |
} |
| 210 |
|
| 211 |
// upgrades from old translation used up to V0.4.4 to new model used in V0.5+ |
| 212 |
function upgrade_translations($type, $ids) { |
| 213 |
$listlanguages = $this->get_languages_list(); |
| 214 |
foreach ($ids as $id) { |
| 215 |
$lang = call_user_func(array(&$this, 'get_'.$type.'_language'), $id); |
| 216 |
if (!$lang) |
| 217 |
continue; |
| 218 |
|
| 219 |
$tr = array(); |
| 220 |
foreach ($listlanguages as $language) { |
| 221 |
if ($meta = get_metadata($type, $id, '_lang-'.$language->slug, true)) |
| 222 |
$tr[$language->slug] = $meta; |
| 223 |
} |
| 224 |
|
| 225 |
if (!empty($tr)) { |
| 226 |
$tr = serialize(array_merge(array($lang->slug => $id), $tr)); |
| 227 |
update_metadata($type, $id, '_translations', $tr); |
| 228 |
} |
| 229 |
} |
| 230 |
} |
| 231 |
|
| 232 |
// manage upgrade even when it is done manually |
| 233 |
function admin_init() { |
| 234 |
$options = get_option('polylang'); |
| 235 |
if (version_compare($options['version'], POLYLANG_VERSION, '<')) { |
| 236 |
|
| 237 |
if (version_compare($options['version'], '0.4', '<')) |
| 238 |
$options['hide_default'] = 0; // option introduced in 0.4 |
| 239 |
|
| 240 |
// translation model changed in V0.5 |
| 241 |
if (version_compare($options['version'], '0.5', '<')) { |
| 242 |
$ids = get_posts(array('numberposts' => -1, 'fields' => 'ids', 'post_type' => 'any', 'post_status' => 'any')); |
| 243 |
$this->upgrade_translations('post', $ids); |
| 244 |
$ids = get_terms($this->taxonomies, array('get' => 'all', 'fields' => 'ids')); |
| 245 |
$this->upgrade_translations('term', $ids); |
| 246 |
} |
| 247 |
|
| 248 |
// translation model changed in V0.5 |
| 249 |
// deleting the old one has been delayed in V0.6 (just in case...) |
| 250 |
if (version_compare($options['version'], '0.6', '<')) { |
| 251 |
$listlanguages = $this->get_languages_list(); |
| 252 |
|
| 253 |
$ids = get_posts(array('numberposts'=> -1, 'fields' => 'ids', 'post_type'=>'any', 'post_status'=>'any')); |
| 254 |
foreach ($ids as $id) { |
| 255 |
foreach ($listlanguages as $lang) |
| 256 |
delete_post_meta($id, '_lang-'.$lang->slug); |
| 257 |
} |
| 258 |
|
| 259 |
$ids = get_terms($this->taxonomies, array('get' => 'all', 'fields' => 'ids')); |
| 260 |
foreach ($ids as $id) { |
| 261 |
foreach ($listlanguages as $lang) |
| 262 |
delete_metadata('term', $id, '_lang-'.$lang->slug); |
| 263 |
} |
| 264 |
} |
| 265 |
|
| 266 |
if (version_compare($options['version'], '0.7', '<')) |
| 267 |
$options['force_lang'] = 0; // option introduced in 0.7 |
| 268 |
|
| 269 |
// string translation storage model changed and option added in 0.8 |
| 270 |
if (version_compare($options['version'], '0.8dev1', '<')) { |
| 271 |
if (function_exists('base64_decode')) { |
| 272 |
$mo = new MO(); |
| 273 |
foreach ($this->get_languages_list() as $language) { |
| 274 |
$reader = new POMO_StringReader(base64_decode(get_option('polylang_mo'.$language->term_id))); |
| 275 |
$mo->import_from_reader($reader); |
| 276 |
$this->mo_export($mo, $language); |
| 277 |
} |
| 278 |
} |
| 279 |
$options['redirect_lang'] = 0; // option introduced in 0.8 |
| 280 |
} |
| 281 |
|
| 282 |
if (version_compare($options['version'], '0.8.2', '<')) |
| 283 |
flush_rewrite_rules(); // rewrite rules have been modified in 0.7.1 & 0.7.2 & 0.8 & 0.8.1 & 0.8.2 |
| 284 |
|
| 285 |
$options['version'] = POLYLANG_VERSION; |
| 286 |
update_option('polylang', $options); |
| 287 |
} |
| 288 |
} |
| 289 |
|
| 290 |
// some initialization |
| 291 |
function init() { |
| 292 |
global $wpdb; |
| 293 |
$wpdb->termmeta = $wpdb->prefix . 'termmeta'; // registers the termmeta table in wpdb |
| 294 |
$options = get_option('polylang'); |
| 295 |
|
| 296 |
// registers the language taxonomy |
| 297 |
// codex: use the init action to call this function |
| 298 |
// object types will be set later once all custom post types are registered |
| 299 |
register_taxonomy('language', null, array( |
| 300 |
'label' => false, |
| 301 |
'public' => false, // avoid displaying the 'like post tags text box' in the quick edit |
| 302 |
'query_var'=>'lang', |
| 303 |
'update_count_callback' => '_update_post_term_count')); |
| 304 |
|
| 305 |
// optionaly removes 'language' in permalinks so that we get http://www.myblog/en/ instead of http://www.myblog/language/en/ |
| 306 |
if ($options['rewrite']) |
| 307 |
add_permastruct('language', '%language%', array('with_front' => false)); |
| 308 |
|
| 309 |
load_plugin_textdomain('polylang', false, basename(POLYLANG_DIR).'/languages'); // plugin i18n |
| 310 |
} |
| 311 |
|
| 312 |
// registers our widgets |
| 313 |
function widgets_init() { |
| 314 |
register_widget('Polylang_Widget'); |
| 315 |
|
| 316 |
// overwrites the calendar widget to filter posts by language |
| 317 |
unregister_widget('WP_Widget_Calendar'); |
| 318 |
register_widget('Polylang_Widget_Calendar'); |
| 319 |
} |
| 320 |
|
| 321 |
// complete our taxonomy and add rewrite rules filters once custom post types and taxonomies are registered (normally in init) |
| 322 |
function prepare_rewrite_rules() { |
| 323 |
foreach ($this->post_types as $post_type) |
| 324 |
register_taxonomy_for_object_type('language', $post_type); |
| 325 |
|
| 326 |
// don't modify the rules if there is no languages created yet |
| 327 |
if (!$this->get_languages_list()) |
| 328 |
return; |
| 329 |
|
| 330 |
$types = array_merge(array('post', 'date', 'root', 'comments', 'search', 'author', 'page'), array_keys($GLOBALS['wp_rewrite']->extra_permastructs)); |
| 331 |
$types = apply_filters('pll_rewrite_rules', $types); // allow plugins to add rewrite rules to the language filter |
| 332 |
foreach ($types as $type) |
| 333 |
add_filter($type . '_rewrite_rules', array(&$this, 'rewrite_rules')); |
| 334 |
|
| 335 |
add_filter('rewrite_rules_array', array(&$this, 'rewrite_rules')); // needed for post type archives |
| 336 |
} |
| 337 |
|
| 338 |
// the rewrite rules ! |
| 339 |
// always make sure the default language is at the end in case the language information is hidden for default language |
| 340 |
// thanks to brbrbr http://wordpress.org/support/topic/plugin-polylang-rewrite-rules-not-correct |
| 341 |
function rewrite_rules($rules) { |
| 342 |
// suppress the rules created by WordPress for our taxonomy |
| 343 |
if (($current_filter = current_filter()) == 'language_rewrite_rules') |
| 344 |
return array(); |
| 345 |
|
| 346 |
$options = get_option('polylang'); |
| 347 |
$always_rewrite = in_array(str_replace('_rewrite_rules', '', $current_filter), array('date', 'root', 'comments', 'author', 'post_format')); |
| 348 |
$newrules = array(); |
| 349 |
|
| 350 |
foreach ($this->get_languages_list() as $language) |
| 351 |
if (!$options['hide_default'] || $options['default_lang'] != $language->slug) |
| 352 |
$languages[] = $language->slug; |
| 353 |
|
| 354 |
if (isset($languages)) |
| 355 |
$slug = $options['rewrite'] ? '('.implode('|', $languages).')/' : 'language/('.implode('|', $languages).')/'; |
| 356 |
|
| 357 |
foreach ($rules as $key => $rule) { |
| 358 |
// we don't need the lang parameter for post types and taxonomies |
| 359 |
// moreover adding it would create issues for pages and taxonomies |
| 360 |
if ($options['force_lang'] && in_array(str_replace('_rewrite_rules', '', $current_filter), array_merge($this->post_types, $this->taxonomies))) { |
| 361 |
if (isset($slug)) |
| 362 |
$newrules[$slug.$key] = str_replace(array('[8]', '[7]', '[6]', '[5]', '[4]', '[3]', '[2]', '[1]'), |
| 363 |
array('[9]', '[8]', '[7]', '[6]', '[5]', '[4]', '[3]', '[2]'), $rule); // hopefully it is sufficient ! |
| 364 |
|
| 365 |
if ($options['hide_default']) |
| 366 |
$newrules[$key] = $rules[$key]; |
| 367 |
|
| 368 |
unset($rules[$key]); // now useless |
| 369 |
} |
| 370 |
|
| 371 |
// rewrite rules filtered by language |
| 372 |
elseif ($always_rewrite || strpos($rule, 'post_type=') || ($current_filter != 'rewrite_rules_array' && $options['force_lang'])) { |
| 373 |
if (isset($slug)) |
| 374 |
$newrules[$slug.$key] = str_replace(array('[8]', '[7]', '[6]', '[5]', '[4]', '[3]', '[2]', '[1]', '?'), |
| 375 |
array('[9]', '[8]', '[7]', '[6]', '[5]', '[4]', '[3]', '[2]', '?lang=$matches[1]&'), $rule); // hopefully it is sufficient ! |
| 376 |
|
| 377 |
if ($options['hide_default']) |
| 378 |
$newrules[$key] = str_replace('?', '?lang='.$options['default_lang'].'&', $rule); |
| 379 |
|
| 380 |
unset($rules[$key]); // now useless |
| 381 |
} |
| 382 |
} |
| 383 |
|
| 384 |
// the home rewrite rule |
| 385 |
if ($current_filter == 'root_rewrite_rules' && isset($slug)) |
| 386 |
$newrules[$slug.'?$'] = 'index.php?lang=$matches[1]'; |
| 387 |
|
| 388 |
return $newrules + $rules; |
| 389 |
} |
| 390 |
|
| 391 |
} // class Polylang |
| 392 |
|
| 393 |
if (class_exists("Polylang")) |
| 394 |
new Polylang(); |
| 395 |
?> |
| 396 |
|
