1: <?php
2: /**
3: * PHPWord
4: *
5: * Copyright (c) 2013 PHPWord
6: *
7: * This library is free software; you can redistribute it and/or
8: * modify it under the terms of the GNU Lesser General Public
9: * License as published by the Free Software Foundation; either
10: * version 2.1 of the License, or (at your option) any later version.
11: *
12: * This library is distributed in the hope that it will be useful,
13: * but WITHOUT ANY WARRANTY; without even the implied warranty of
14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15: * Lesser General Public License for more details.
16: *
17: * You should have received a copy of the GNU Lesser General Public
18: * License along with this library; if not, write to the Free Software
19: * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20: *
21: * @category PHPWord
22: * @package PHPWord
23: * @copyright Copyright (c) 2013 PHPWord
24: * @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL
25: * @version 0.7.0
26: */
27:
28: /**
29: * Class PHPWord_Shared_File
30: */
31: class PHPWord_Shared_File
32: {
33: /**
34: * Verify if a file exists
35: *
36: * @param string $pFilename Filename
37: * @return bool
38: */
39: public static function file_exists($pFilename)
40: {
41: // Sick construction, but it seems that
42: // file_exists returns strange values when
43: // doing the original file_exists on ZIP archives...
44: if (strtolower(substr($pFilename, 0, 3)) == 'zip') {
45: // Open ZIP file and verify if the file exists
46: $zipFile = substr($pFilename, 6, strpos($pFilename, '#') - 6);
47: $archiveFile = substr($pFilename, strpos($pFilename, '#') + 1);
48:
49: $zip = new ZipArchive();
50: if ($zip->open($zipFile) === true) {
51: $returnValue = ($zip->getFromName($archiveFile) !== false);
52: $zip->close();
53: return $returnValue;
54: } else {
55: return false;
56: }
57: } else {
58: // Regular file_exists
59: return file_exists($pFilename);
60: }
61: }
62:
63: /**
64: * Returns canonicalized absolute pathname, also for ZIP archives
65: *
66: * @param string $pFilename
67: * @return string
68: */
69: public static function realpath($pFilename)
70: {
71: // Returnvalue
72: $returnValue = '';
73:
74: // Try using realpath()
75: $returnValue = realpath($pFilename);
76:
77: // Found something?
78: if ($returnValue == '' || is_null($returnValue)) {
79: $pathArray = split('/', $pFilename);
80: while (in_array('..', $pathArray) && $pathArray[0] != '..') {
81: for ($i = 0; $i < count($pathArray); ++$i) {
82: if ($pathArray[$i] == '..' && $i > 0) {
83: unset($pathArray[$i]);
84: unset($pathArray[$i - 1]);
85: break;
86: }
87: }
88: }
89: $returnValue = implode('/', $pathArray);
90: }
91:
92: // Return
93: return $returnValue;
94: }
95: }
96: