<?php
/**
 * 2008 - 2015 HDClic
 *
 * MODULE PrestaBlog
 *
 * @version   3.6.8
 * @author    HDClic <prestashop@hdclic.com>
 * @link      http://www.hdclic.com
 * @copyright Copyright (c) permanent, HDClic
 * @license   Addons PrestaShop license limitation
 *
 * NOTICE OF LICENSE
 *
 * Don't use this module on several shops. The license provided by PrestaShop Addons
 * for all its modules is valid only once for a single shop.
 */

class HZip
{
	/**
	* Add files and sub-directories in a folder to zip file.
	* @param string $folder
	* @param ZipArchive $zip_file
	* @param int $exclusive_length Number of text to be exclusived from the file path.
	*/
	private static function folderToZip($folder, &$zip_file, $exclusive_length)
	{
		$handle = opendir($folder);
		while (false !== $f = readdir($handle))
		{
			if ($f != '.' && $f != '..')
			{
				$file_path = "$folder/$f";
				// Remove prefix from file path before add to zip.
				$local_path = Tools::substr($file_path, $exclusive_length);
				if (is_file($file_path))
					$zip_file->addFile($file_path, $local_path);

				elseif (is_dir($file_path))
				{
					// Add sub-directory.
					$zip_file->addEmptyDir($local_path);
					self::folderToZip($file_path, $zip_file, $exclusive_length);
				}
			}
		}
		closedir($handle);
	}

	/**
	* Zip a folder (include itself).
	* Usage:
	*   HZip::zipDir('/path/to/sourceDir', '/path/to/out.zip');
	*
	* @param string $source_path Path of directory to be zip.
	* @param string $out_zip_path Path of output zip file.
	*/
	public static function zipDir($source_path, $out_zip_path)
	{
		$path_info = pathInfo($source_path);
		$parent_path = $path_info['dirname'];
		$dir_name = $path_info['basename'];

		$z = new ZipArchive();
		$z->open($out_zip_path, ZIPARCHIVE::CREATE);
		$z->addEmptyDir($dir_name);
		self::folderToZip($source_path, $z, Tools::strlen("$parent_path/"));
		$z->close();
	}
}
?>