1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
<?php if (!defined('BASEPATH')) exit('No direct script access allowed');
/**
* CodeIgniter
*
* An open source application development framework for PHP 4.3.2 or newer
*
* @package CodeIgniter
* @author ExpressionEngine Dev Team
* @copyright Copyright (c) 2006, EllisLab, Inc.
* @license http://codeigniter.com/user_guide/license.html
* @link http://codeigniter.com
* @since Version 1.0
* @filesource
*/
// ------------------------------------------------------------------------
/**
* CodeIgniter File Helpers
*
* @package CodeIgniter
* @subpackage Helpers
* @category Helpers
* @author ExpressionEngine Dev Team
* @link http://codeigniter.com/user_guide/helpers/file_helpers.html
*/
// ------------------------------------------------------------------------
/**
* Read File
*
* Opens the file specfied in the path and returns it as a string.
*
* @access public
* @param string path to file
* @return string
*/
function read_file($file)
{
if ( ! file_exists($file))
{
return FALSE;
}
if (function_exists('file_get_contents'))
{
return file_get_contents($file);
}
if ( ! $fp = @fopen($file, 'rb'))
{
return FALSE;
}
flock($fp, LOCK_SH);
$data = '';
if (filesize($file) > 0)
{
$data =& fread($fp, filesize($file));
}
flock($fp, LOCK_UN);
fclose($fp);
return $data;
}
// ------------------------------------------------------------------------
/**
* Write File
*
* Writes data to the file specified in the path.
* Creates a new file if non-existent.
*
* @access public
* @param string path to file
* @param string file data
* @return bool
*/
function write_file($path, $data, $mode = 'wb')
{
if ( ! $fp = @fopen($path, $mode))
{
return FALSE;
}
flock($fp, LOCK_EX);
fwrite($fp, $data);
flock($fp, LOCK_UN);
fclose($fp);
return TRUE;
}
// ------------------------------------------------------------------------
/**
* Delete Files
*
* Deletes all files contained in the supplied directory path.
* Files must be writable or owned by the system in order to be deleted.
* If the second parameter is set to TRUE, any directories contained
* within the supplied base directory will be nuked as well.
*
* @access public
* @param string path to file
* @param bool whether to delete any directories found in the path
* @return bool
*/
function delete_files($path, $del_dir = FALSE, $level = 0)
{
// Trim the trailing slash
$path = preg_replace("|^(.+?)/*$|", "\\1", $path);
if ( ! $current_dir = @opendir($path))
return;
while(FALSE !== ($filename = @readdir($current_dir)))
{
if ($filename != "." and $filename != "..")
{
if (is_dir($path.'/'.$filename))
{
$level++;
delete_files($path.'/'.$filename, $del_dir, $level);
}
else
{
unlink($path.'/'.$filename);
}
}
}
@closedir($current_dir);
if ($del_dir == TRUE AND $level > 0)
{
@rmdir($path);
}
}
// ------------------------------------------------------------------------
/**
* Get Filenames
*
* Reads the specified directory and builds an array containing the filenames.
* Any sub-folders contained within the specified path are read as well.
*
* @access public
* @param string path to source
* @param bool whether to include the path as part of the filename
* @return array
*/
function get_filenames($source_dir, $include_path = FALSE)
{
$_filedata = array();
if ($fp = @opendir($source_dir))
{
while (FALSE !== ($file = readdir($fp)))
{
if (@is_dir($source_dir.$file) && substr($file, 0, 1) != '.')
{
get_filenames($source_dir.$file."/", $include_path);
}
elseif (substr($file, 0, 1) != ".")
{
$_filedata[] = ($include_path == TRUE) ? $source_dir.$file : $file;
}
}
return $_filedata;
}
}
// --------------------------------------------------------------------
/**
* Tests for file writability
*
* is_writable() returns TRUE on Windows servers
* when you really can't write to the file
* as the OS reports to PHP as FALSE only if the
* read-only attribute is marked. Ugh?
*
* @access private
* @return void
*/
function is_really_writable($file)
{
if (is_dir($file))
{
$file = rtrim($file, '/').'/'.md5(rand(1,100));
if (($fp = @fopen($file, 'ab')) === FALSE)
{
return FALSE;
}
@chmod($file, 0777);
@unlink($file);
}
elseif (($fp = @fopen($file, 'ab')) === FALSE)
{
return FALSE;
}
fclose($fp);
return TRUE;
}
?>
|
