public static function &getInstance($lang = null)
{
if (is_null($lang)) {
$lang = T::getLang();
}
if (empty($lang)) {
$lang = Config::get('defaultLang');
}
if (key_exists($lang, T::$instances)) {
return T::$instances[$lang];
} else {
$driver = T::getConfig('driver');
if (empty($driver)) {
$driver = 'reader';
}
$className = 'T_' . $driver;
$t = new $className();
$t->init($lang);
T::addInstance($t, $lang);
return $t;
}
}
