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<?php
/**
* MINZ - Copyright 2011 Marien Fressinaud
* Sous licence AGPL3 <http://www.gnu.org/licenses/>
*/
/**
* This class is used for the internationalization.
* It uses files in `./app/i18n/`
*/
class Minz_Translate {
/**
* $lang_list is the list of available languages.
*/
private static $lang_list = array();
/**
* $lang_name is the name of the current language to use.
*/
private static $lang_name;
/**
* $lang_path is the pathname of i18n files (e.g. ./app/i18n/en/).
*/
private static $lang_path;
/**
* $translates is a cache for i18n translation.
*/
private static $translates = array();
/**
* Init the translation object.
* @param $lang_list the list of available languages.
* @param $lang_name the lang to show.
*/
public static function init($lang_list, $lang_name) {
self::$lang_list = $lang_list;
self::$lang_name = $lang_name;
self::$lang_path = APP_PATH . '/i18n/' . self::$lang_name . '/';
}
/**
* Reset the translation object with a new language.
* @param $lang_name the new language to use
*/
public static function reset($lang_name) {
self::init(self::$lang_list, $lang_name);
}
/**
* Return the list of available languages.
* @return an array.
*/
public static function availableLanguages() {
return self::$lang_list;
}
/**
* Translate a key into its corresponding value based on selected language.
* @param $key the key to translate.
* @param additional parameters for variable keys.
* @return the value corresponding to the key.
* If no value is found, return the key itself.
*/
public static function t($key) {
$group = explode('.', $key);
if (count($group) < 2) {
Minz_Log::debug($key . ' is not in a valid format');
$top_level = 'gen';
} else {
$top_level = array_shift($group);
}
$filename = self::$lang_path . $top_level . '.php';
// Try to load the i18n file if it's not done yet.
if (!isset(self::$translates[$top_level])) {
if (!file_exists($filename)) {
Minz_Log::debug($top_level . ' is not a valid top level key');
return $key;
}
self::$translates[$top_level] = include($filename);
}
// Go through the i18n keys to get the correct translation value.
$translates = self::$translates[$top_level];
$size_group = count($group);
$level_processed = 0;
$translation_value = $key;
foreach ($group as $i18n_level) {
$level_processed++;
if (!isset($translates[$i18n_level])) {
Minz_Log::debug($key . ' is not a valid key');
return $key;
}
if ($level_processed < $size_group) {
$translates = $translates[$i18n_level];
} else {
$translation_value = $translates[$i18n_level];
}
}
if (is_array($translation_value)) {
if (isset($translation_value['_'])) {
$translation_value = $translation_value['_'];
} else {
Minz_Log::debug($key . ' is not a valid key');
return $key;
}
}
// Get the facultative arguments to replace i18n variables.
$args = func_get_args();
unset($args[0]);
return vsprintf($translation_value, $args);
}
/**
* Return the current language.
*/
public static function language() {
return self::$lang_name;
}
}
/**
* Alias for Minz_Translate::t()
*/
function _t($key) {
$args = func_get_args();
unset($args[0]);
array_unshift($args, $key);
return call_user_func_array('Minz_Translate::t', $args);
}
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