visualizer / vendor / phpoffice / phpspreadsheet / src / PhpSpreadsheet / Shared / File.php

File.php in Visualizer – Tables & Charts Manager with Built-in AI Generator 3.10.8, at vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Shared/File.php

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1	<?php
2
3	namespace PhpOffice\PhpSpreadsheet\Shared;
4
5	use InvalidArgumentException;
6	use ZipArchive;
7
8	class File
9	{
10	/**
11	* Use Temp or File Upload Temp for temporary files.
12	*
13	* @var bool
14	*/
15	protected static $useUploadTempDirectory = false;
16
17	/**
18	* Set the flag indicating whether the File Upload Temp directory should be used for temporary files.
19	*
20	* @param bool $useUploadTempDir Use File Upload Temporary directory (true or false)
21	*/
22	public static function setUseUploadTempDirectory($useUploadTempDir)
23	{
24	self::$useUploadTempDirectory = (bool) $useUploadTempDir;
25	}
26
27	/**
28	* Get the flag indicating whether the File Upload Temp directory should be used for temporary files.
29	*
30	* @return bool Use File Upload Temporary directory (true or false)
31	*/
32	public static function getUseUploadTempDirectory()
33	{
34	return self::$useUploadTempDirectory;
35	}
36
37	/**
38	* Verify if a file exists.
39	*
40	* @param string $pFilename Filename
41	*
42	* @return bool
43	*/
44	public static function fileExists($pFilename)
45	{
46	// Sick construction, but it seems that
47	// file_exists returns strange values when
48	// doing the original file_exists on ZIP archives...
49	if (strtolower(substr($pFilename, 0, 3)) == 'zip') {
50	// Open ZIP file and verify if the file exists
51	$zipFile = substr($pFilename, 6, strpos($pFilename, '#') - 6);
52	$archiveFile = substr($pFilename, strpos($pFilename, '#') + 1);
53
54	$zip = new ZipArchive();
55	if ($zip->open($zipFile) === true) {
56	$returnValue = ($zip->getFromName($archiveFile) !== false);
57	$zip->close();
58
59	return $returnValue;
60	}
61
62	return false;
63	}
64
65	return file_exists($pFilename);
66	}
67
68	/**
69	* Returns canonicalized absolute pathname, also for ZIP archives.
70	*
71	* @param string $pFilename
72	*
73	* @return string
74	*/
75	public static function realpath($pFilename)
76	{
77	// Returnvalue
78	$returnValue = '';
79
80	// Try using realpath()
81	if (file_exists($pFilename)) {
82	$returnValue = realpath($pFilename);
83	}
84
85	// Found something?
86	if ($returnValue == '' \|\| ($returnValue === null)) {
87	$pathArray = explode('/', $pFilename);
88	while (in_array('..', $pathArray) && $pathArray[0] != '..') {
89	$iMax = count($pathArray);
90	for ($i = 0; $i < $iMax; ++$i) {
91	if ($pathArray[$i] == '..' && $i > 0) {
92	unset($pathArray[$i], $pathArray[$i - 1]);
93
94	break;
95	}
96	}
97	}
98	$returnValue = implode('/', $pathArray);
99	}
100
101	// Return
102	return $returnValue;
103	}
104
105	/**
106	* Get the systems temporary directory.
107	*
108	* @return string
109	*/
110	public static function sysGetTempDir()
111	{
112	if (self::$useUploadTempDirectory) {
113	// use upload-directory when defined to allow running on environments having very restricted
114	// open_basedir configs
115	if (ini_get('upload_tmp_dir') !== false) {
116	if ($temp = ini_get('upload_tmp_dir')) {
117	if (file_exists($temp)) {
118	return realpath($temp);
119	}
120	}
121	}
122	}
123
124	return realpath(sys_get_temp_dir());
125	}
126
127	/**
128	* Assert that given path is an existing file and is readable, otherwise throw exception.
129	*
130	* @param string $filename
131	*
132	* @throws InvalidArgumentException
133	*/
134	public static function assertFile($filename)
135	{
136	if (!is_file($filename)) {
137	throw new InvalidArgumentException('File "' . $filename . '" does not exist.');
138	}
139
140	if (!is_readable($filename)) {
141	throw new InvalidArgumentException('Could not open "' . $filename . '" for reading.');
142	}
143	}
144	}
145