/**
* find all available languages for an app
* @param string $app App that needs to be translated
* @return array an array of available languages
*/
public static function findAvailableLanguages($app = null)
{
if (!empty(self::$availableLanguages)) {
return self::$availableLanguages;
}
$available = array('en');
//english is always available
$dir = self::findI18nDir($app);
if (is_dir($dir)) {
$files = scandir($dir);
foreach ($files as $file) {
if (substr($file, -5, 5) === '.json' && substr($file, 0, 4) !== 'l10n') {
$i = substr($file, 0, -5);
$available[] = $i;
}
}
}
self::$availableLanguages = $available;
return $available;
}