function getFilelist($preserve = false)
    {
        if (isset($this->_packageInfo['filelist']) && !$preserve) {
            return $this->_packageInfo['filelist'];
        }
        $this->flattenFilelist();
        if ($contents = $this->getContents()) {
            $ret = array();
            if (!isset($contents['dir'])) {
                return false;
            }
            if (!isset($contents['dir']['file'][0])) {
                $contents['dir']['file'] = array($contents['dir']['file']);
            }
            foreach ($contents['dir']['file'] as $file) {
                $name = $file['attribs']['name'];
                if (!$preserve) {
                    $file = $file['attribs'];
                }
                $ret[$name] = $file;
            }
            if (!$preserve) {
                $this->_packageInfo['filelist'] = $ret;
            }
            return $ret;
        }
        return false;
    }