vikbooking / admin / helpers / src / archive / adapter.php

adapter.php in VikBooking Hotel Booking Engine & PMS trunk, at admin/helpers/src/archive/adapter.php

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1	<?php
2	/**
3	* @package VikBooking
4	* @subpackage core
5	* @author E4J s.r.l.
6	* @copyright Copyright (C) 2021 E4J s.r.l. All Rights Reserved.
7	* @license http://www.gnu.org/licenses/gpl-2.0.html GNU/GPL
8	* @link https://vikwp.com
9	*/
10
11	// No direct access
12	defined('ABSPATH') or die('No script kiddies please!');
13
14	/**
15	* Defines an abstract adapter able to extract the archives by using the
16	* native tools provided by Joomla! CMS.
17	*
18	* @since 1.5
19	*/
20	abstract class VBOArchiveAdapter implements VBOArchiveType
21	{
22	/**
23	* Extracts the file from a package.
24	*
25	* @param string $source The path of the package.
26	* @param string $destination The folder in which the files should be extracted.
27	*
28	* @return bool True on success, false otherwise.
29	*/
30	public function extract($source, $destination)
31	{
32	if (!class_exists('JArchive'))
33	{
34	// get temporary path
35	$tmp_path = JFactory::getApplication()->get('tmp_path');
36
37	// instantiate archive class
38	$archive = new Joomla\Archive\Archive(array('tmp_path' => $tmp_path));
39
40	// extract the archive
41	return $archive->extract($source, $destination);
42	}
43
44	// backward compatibility
45	return JArchive::extract($source, $destination);
46	}
47
48	/**
49	* Downloads the specified archive.
50	*
51	* @param string $source The path of the folder to compress.
52	*
53	* @return void
54	*
55	* @throws Exception
56	*/
57	public function download($source)
58	{
59	if (!JFile::exists($source))
60	{
61	// the selected archive doesn't exist
62	throw new Exception(sprintf('Archive [%s] not found', $source), 404);
63	}
64
65	$app = JFactory::getApplication();
66
67	// prepare headers
68	$app->setHeader('Content-Disposition', 'attachment; filename=' . basename($source));
69	$app->setHeader('Content-Length', filesize($source));
70
71	// send headers
72	$app->sendHeaders();
73
74	// use fopen to properly download large files
75	$handle = fopen($source, 'rb');
76
77	// read 1MB per cycle
78	$chunk_size = 1024 * 1024;
79
80	while (!feof($handle))
81	{
82	echo fread($handle, $chunk_size);
83	ob_flush();
84	flush();
85	}
86
87	fclose($handle);
88	}
89
90	/**
91	* Compresses the specified folder into an archive.
92	*
93	* @param string $source The path of the folder to compress.
94	* @param string $destination The path of the resulting archive.
95	*
96	* @return bool True on success, false otherwise.
97	*/
98	abstract public function compress($source, $destination);
99	}
100