Horde_Registry::getAppDrivers PHP Method

    public function getAppDrivers($app, $prefix)
    {
        $classes = array();
        $fileprefix = strtr($prefix, '_', '/');
        $fileroot = $this->get('fileroot', $app);
        if (!is_null($fileroot)) {
            try {
                $pushed = $this->pushApp($app);
            } catch (Horde_Exception $e) {
                if ($e->getCode() == Horde_Registry::AUTH_FAILURE) {
                    return array();
                }
                throw $e;
            }
            if (is_dir($fileroot . '/lib/' . $fileprefix)) {
                try {
                    $di = new DirectoryIterator($fileroot . '/lib/' . $fileprefix);
                    foreach ($di as $val) {
                        if (!$val->isDir() && !$di->isDot()) {
                            $class = $app . '_' . $prefix . '_' . basename($val, '.php');
                            if (class_exists($class)) {
                                $classes[] = $class;
                            }
                        }
                    }
                } catch (UnexpectedValueException $e) {
                }
            }
            if ($pushed) {
                $this->popApp();
            }
        }
        return $classes;
    }