wp-super-minify / includes / min / lib / Minify / Cache / File.php

File.php in WP Super Minify • Minify, Compress and Cache HTML, CSS & JavaScript trunk, at includes/min/lib/Minify/Cache/File.php

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1	<?php
2	/**
3	* Class Minify_Cache_File
4	* @package Minify
5	*/
6
7	use Psr\Log\LoggerInterface;
8
9	class Minify_Cache_File implements Minify_CacheInterface
10	{
11
12	/**
13	* @var string
14	*/
15	private $path;
16
17	/**
18	* @var bool
19	*/
20	private $locking;
21
22	/**
23	* @var LoggerInterface
24	*/
25	private $logger;
26
27	/**
28	* @param string $path
29	* @param bool $fileLocking
30	* @param LoggerInterface $logger
31	*/
32	public function __construct($path = '', $fileLocking = false, ?LoggerInterface $logger = null)
33	{
34	if (! $path) {
35	$path = sys_get_temp_dir();
36	}
37	$this->locking = $fileLocking;
38	$this->path = $path;
39
40	if (!$logger) {
41	$logger = new \Monolog\Logger('minify');
42	}
43	$this->logger = $logger;
44	}
45
46	/**
47	* Write data to cache.
48	*
49	* @param string $id cache id (e.g. a filename)
50	*
51	* @param string $data
52	*
53	* @return bool success
54	*/
55	public function store($id, $data)
56	{
57	$flag = $this->locking ? LOCK_EX : null;
58	$file = $this->path . '/' . $id;
59
60	if (! @file_put_contents($file, $data, $flag)) {
61	$this->logger->warning("Minify_Cache_File: Write failed to '$file'");
62	}
63
64	// write control
65	if ($data !== $this->fetch($id)) {
66	@unlink($file);
67	$this->logger->warning("Minify_Cache_File: Post-write read failed for '$file'");
68
69	return false;
70	}
71
72	return true;
73	}
74
75	/**
76	* Get the size of a cache entry
77	*
78	* @param string $id cache id (e.g. a filename)
79	*
80	* @return int size in bytes
81	*/
82	public function getSize($id)
83	{
84	return filesize($this->path . '/' . $id);
85	}
86
87	/**
88	* Does a valid cache entry exist?
89	*
90	* @param string $id cache id (e.g. a filename)
91	*
92	* @param int $srcMtime mtime of the original source file(s)
93	*
94	* @return bool exists
95	*/
96	public function isValid($id, $srcMtime)
97	{
98	$file = $this->path . '/' . $id;
99
100	return (is_file($file) && (filemtime($file) >= $srcMtime));
101	}
102
103	/**
104	* Send the cached content to output
105	*
106	* @param string $id cache id (e.g. a filename)
107	*/
108	public function display($id)
109	{
110	if (!$this->locking) {
111	readfile($this->path . '/' . $id);
112
113	return;
114	}
115
116	$fp = fopen($this->path . '/' . $id, 'rb');
117	flock($fp, LOCK_SH);
118	fpassthru($fp);
119	flock($fp, LOCK_UN);
120	fclose($fp);
121	}
122
123	/**
124	* Fetch the cached content
125	*
126	* @param string $id cache id (e.g. a filename)
127	*
128	* @return string
129	*/
130	public function fetch($id)
131	{
132	if (!$this->locking) {
133	return file_get_contents($this->path . '/' . $id);
134	}
135
136	$fp = fopen($this->path . '/' . $id, 'rb');
137	if (!$fp) {
138	return false;
139	}
140
141	flock($fp, LOCK_SH);
142	$ret = stream_get_contents($fp);
143	flock($fp, LOCK_UN);
144	fclose($fp);
145
146	return $ret;
147	}
148
149	/**
150	* Fetch the cache path used
151	*
152	* @return string
153	*/
154	public function getPath()
155	{
156	return $this->path;
157	}
158
159	/**
160	* Get a usable temp directory
161	*
162	* @return string
163	* @deprecated
164	*/
165	public static function tmp()
166	{
167	trigger_error(__METHOD__ . ' is deprecated in Minfy 3.0', E_USER_DEPRECATED);
168
169	return sys_get_temp_dir();
170	}
171
172	/**
173	* Send message to the Minify logger
174	* @param string $msg
175	* @return null
176	* @deprecated Use $this->logger
177	*/
178	protected function _log($msg)
179	{
180	trigger_error(__METHOD__ . ' is deprecated in Minify 3.0.', E_USER_DEPRECATED);
181	$this->logger->warning($msg);
182	}
183	}
184