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www.giggi.me / code-igniter-v3-giggi / 32cb0e53301575b57c14760ea01649719a435c5e / . / system / libraries / Zip.php
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adminae58a5d2006-09-30 19:25:07 +0000[diff] [blame]1<?php if (!defined('BASEPATH')) exit('No direct script access allowed');
2/**
3 * Code Igniter
4 *
5 * An open source application development framework for PHP 4.3.2 or newer
6 *
7 * @package CodeIgniter
8 * @author Rick Ellis
9 * @copyright Copyright (c) 2006, pMachine, Inc.
10 * @license http://www.codeignitor.com/user_guide/license.html
11 * @link http://www.codeigniter.com
12 * @since Version 1.0
13 * @filesource
14 */
15
16// ------------------------------------------------------------------------
17
18/**
19 * Zip Compression Class
20 *
21 * This class is based on a library aquired at Zend:
22 * http://www.zend.com/codex.php?id=696&single=1
23 *
adminc8b7bda2006-09-30 19:26:08 +0000[diff] [blame]24 * I'm not sure this library is all that reliable, and the
25 * directory feature doesn't seem to work right, but it's the only
adminae58a5d2006-09-30 19:25:07 +0000[diff] [blame]26 * zip compressor I'm aware of -- Rick Ellis
27 *
28 * @package CodeIgniter
29 * @subpackage Libraries
30 * @category Encryption
31 * @author Rick Ellis
32 * @link http://www.codeigniter.com/user_guide/general/encryption.html
33 */
34class Zip {
35
36 var $zdata = array();
37 var $cdir = array();
38 var $offset = 0;
39
40 /**
41 * Add a Directory
42 *
43 * @access public
44 * @param string
45 * @return void
46 */
47 function add_dir($name)
48 {
49 $name =str_replace ("\\", "/", $name);
50
51 $fd = "\x50\x4b\x03\x04\x0a\x00\x00\x00\x00\x00\x00\x00\x00\x00"
52 .pack("V", 0)
53 .pack("V", 0)
54 .pack("V", 0)
55 .pack("v", strlen($name))
56 .pack("v", 0)
57 .$name;
58
59 $this->cdata[] = $fd;
60
61 $cd = "\x50\x4b\x01\x02\x00\x00\x0a\x00\x00\x00\x00\x00\x00\x00\x00\x00"
62 .pack("V", 0)
63 .pack("V", 0)
64 .pack("V", 0)
65 .pack("v", strlen ($name))
66 .pack("v", 0)
67 .pack("v", 0)
68 .pack("v", 0)
69 .pack("v", 0)
70 .pack("V", 16)
71 .pack("V", $this->offset)
72 .$name;
73
74 $this->offset = strlen(implode('', $this->cdata));
75
76 $this->cdir[] = $cd;
77 }
78
79 // --------------------------------------------------------------------
80
81 /**
82 * Add a File
83 *
84 * @access public
85 * @param string
86 * @return void
87 */
88 function add_file($data, $name)
89 {
90 $name = str_replace("\\", "/", $name);
91
92 $u_len = strlen($data);
93 $crc = crc32($data);
94 $data = gzcompress($data);
95 $data = substr(substr($data, 0,strlen ($data) - 4), 2);
96 $c_len = strlen($data);
97
98 $fd = "\x50\x4b\x03\x04\x14\x00\x00\x00\x08\x00\x00\x00\x00\x00"
99 .pack("V", $crc)
100 .pack("V", $c_len)
101 .pack("V", $u_len)
102 .pack("v", strlen($name))
103 .pack("v", 0)
104 .$name
105 .$data
106 .pack("V", $crc)
107 .pack("V", $c_len)
108 .pack("V", $u_len);
109
110 $this->zdata[] = $fd;
111
112 $cd = "\x50\x4b\x01\x02\x00\x00\x14\x00\x00\x00\x08\x00\x00\x00\x00\x00"
113 .pack("V", $crc)
114 .pack("V", $c_len)
115 .pack("V", $u_len)
116 .pack("v", strlen ($name))
117 .pack("v", 0)
118 .pack("v", 0)
119 .pack("v", 0)
120 .pack("v", 0)
121 .pack("V", 32 )
122 .pack("V", $this->offset)
123 .$name;
124
125 $this->offset = strlen(implode('', $this->zdata));
126
127 $this->cdir[] = $cd;
128 }
129
130 // --------------------------------------------------------------------
131
132 /**
133 * Output the zip file
134 *
135 * @access public
136 * @return string
137 */
138 function output_zipfile()
139 {
140 $data = implode("", $this->zdata);
141 $cdir = implode("", $this->cdir);
142
143 return $data
144 .$cdir
145 ."\x50\x4b\x05\x06\x00\x00\x00\x00"
146 .pack("v", sizeof($this->cdir))
147 .pack("v", sizeof($this->cdir))
148 .pack("V", strlen($cdir))
149 .pack("V", strlen($data))
150 ."\x00\x00";
151 }
152
153}
154// END CLASS
155?>