/**
 * @param string $archive
 * @param string $dir
 *
 * @throws PluginException
 */
public function unpackPluginArchive($archive, $dir)
{
    $extension = pathinfo($archive, PATHINFO_EXTENSION);
    try {
        if ($extension == 'zip') {
            $zip = new \ZipArchive();
            $zip->open($archive);
            $zip->extractTo($dir);
            $zip->close();
        } else {
            $phar = new \PharData($archive);
            $phar->extractTo($dir, null, true);
        }
    } catch (\Exception $e) {
        throw new PluginException(trans('pluginservice.text.error.upload_failure'));
    }
}