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<?php
/**
* @package com_zoo
* @author YOOtheme http://www.yootheme.com
* @copyright Copyright (C) YOOtheme GmbH
* @license http://www.gnu.org/licenses/gpl.html GNU/GPL
*/
/**
* Archive helper class
*
* @package Component.Helpers
* @since 2.0
*/
class ArchiveHelper extends AppHelper {
/**
* Class constructor
*
* @param string $app App instance.
* @since 2.0
*/
public function __construct($app) {
parent::__construct($app);
// increase memory limit
@ini_set('memory_limit', '256M');
$app->loader->register('PclZip', 'libraries:pcl/pclzip.lib.php');
}
/**
* Open an archive file, works for zip archives only
*
* @param string $file The full file path to open
* @param string $format The file format. If not specified, will be guessed by the file extension (currently works for zip archives only)
*
* @return PclZip
*
* @since 2.0
*/
public function open($file, $format = 'zip') {
// auto-detect format
if (!$format) {
$format = $this->format($file);
}
// create archive object
if ($format == 'zip') {
return new PclZip($file);
}
return null;
}
/**
* Get the archive format based on the file extension
*
* Any tar-related format (tgz, gz, etc) will be returned as tar
*
* @param string $file The filename or the full file path
*
* @return string The file format (zip or tar)
*
* @since 2.0
*/
public function format($file) {
// detect .zip format
if (preg_match('/\.zip$/i', $file)) {
return 'zip';
}
// detect .tar format
if (preg_match('/\.tar$|\.tar\.gz$|\.tgz$|\.tar\.bz2$|\.tbz2$/i', $file)) {
return 'tar';
}
return null;
}
}