protected function _createTar($skipRoot = false, $finalize = false)
    {
        if (!$skipRoot) {
            $this->_packAndWriteCurrentFile();
        }

        $file = $this->_getCurrentFile();

        if (is_dir($file)) {
            $dirFiles = scandir($file);

            if (false === $dirFiles) {
                throw new Mage_Exception('Can\'t scan dir: ' . $file);
            }

            array_shift($dirFiles); /* remove  './'*/
            array_shift($dirFiles); /* remove  '../'*/

            foreach ($dirFiles as $item) {
                $this->_setCurrentFile($file . $item)->_createTar();
            }
        }

        if ($finalize) {
            $this->_getWriter()->write(str_repeat("\0", self::TAR_BLOCK_SIZE * 12));
        }
    }