File Source for File.php

PHPExcel_Shared

# Source for file File.php

Documentation is available at File.php

1. <?php
2. /**
3. * PHPExcel
4. *
5. * Copyright (c) 2006 - 2011 PHPExcel
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 PHPExcel
22. * @package PHPExcel_Shared
23. * @copyright Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
24. * @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL
25. * @version 1.7.6, 2011-02-27
26. */
29. /**
30. * PHPExcel_Shared_File
31. *
32. * @category PHPExcel
33. * @package PHPExcel_Shared
34. * @copyright Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
35. */
36. class PHPExcel_Shared_File
37. {
38. /**
39. * Verify if a file exists
40. *
41. * @param string $pFilename Filename
42. * @return bool
43. */
44. public static function file_exists($pFilename) {
45. // Sick construction, but it seems that
46. // file_exists returns strange values when
47. // doing the original file_exists on ZIP archives...
48. if ( strtolower( substr($pFilename, 0, 3)) == 'zip' ) {
49. // Open ZIP file and verify if the file exists
50. $zipFile = substr($pFilename, 6, strpos($pFilename, '#') - 6);
51. $archiveFile = substr($pFilename, strpos($pFilename, '#') + 1);
53. $zip = new ZipArchive();
54. if ($zip->open($zipFile) === true) {
55. $returnValue = ($zip->getFromName($archiveFile) !== false);
56. $zip->close();
57. return $returnValue;
58. } else {
59. return false;
60. }
61. } else {
62. // Regular file_exists
63. return file_exists($pFilename);
64. }
65. }
67. /**
68. * Returns canonicalized absolute pathname, also for ZIP archives
69. *
70. * @param string $pFilename
71. * @return string
72. */
73. public static function realpath($pFilename) {
74. // Returnvalue
75. $returnValue = '';
77. // Try using realpath()
78. if ( file_exists($pFilename)) {
79. $returnValue = realpath($pFilename);
80. }
82. // Found something?
83. if ($returnValue == '' || is_null($returnValue)) {
84. $pathArray = explode('/' , $pFilename);
85. while( in_array('..', $pathArray) && $pathArray[0] != '..') {
86. for ($i = 0; $i < count($pathArray); ++$i) {
87. if ($pathArray[$i] == '..' && $i > 0) {
88. unset($pathArray[$i]);
89. unset($pathArray[$i - 1]);
90. break;
91. }
92. }
93. }
94. $returnValue = implode('/', $pathArray);
95. }
97. // Return
98. return $returnValue;
99. }
101. /**
102. * Get the systems temporary directory.
103. *
104. * @return string
105. */
106. public static function sys_get_temp_dir()
107. {
108. // sys_get_temp_dir is only available since PHP 5.2.1
109. // http://php.net/manual/en/function.sys-get-temp-dir.php#94119
111. if ( ! function_exists('sys_get_temp_dir')) {
112. if ($temp = getenv('TMP') ) {
113. if ( file_exists($temp)) { return realpath($temp); }
114. }
115. if ($temp = getenv('TEMP') ) {
116. if ( file_exists($temp)) { return realpath($temp); }
117. }
118. if ($temp = getenv('TMPDIR') ) {
119. if ( file_exists($temp)) { return realpath($temp); }
120. }
122. // trick for creating a file in system's temporary dir
123. // without knowing the path of the system's temporary dir
124. $temp = tempnam(__FILE__, '');
125. if ( file_exists($temp)) {
126. unlink($temp);
127. return realpath( dirname($temp));
128. }
130. return null;
131. }
133. // use ordinary built-in PHP function
134. // There should be no problem with the 5.2.4 Suhosin realpath() bug, because this line should only
135. // be called if we're running 5.2.1 or earlier
136. return realpath( sys_get_temp_dir());
137. }
139. }

Documentation generated on Sun, 27 Feb 2011 16:31:30 -0800 by phpDocumentor 1.4.3