autoptimize / classes / autoptimizeCache.php

autoptimizeCache.php in Autoptimize 1.7.1, at classes/autoptimizeCache.php

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1	<?php
2	if ( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly
3
4	class autoptimizeCache
5	{
6	private $filename;
7	private $mime;
8	private $cachedir;
9	private $delayed;
10
11	public function __construct($md5,$ext='php')
12	{
13	$this->cachedir = AUTOPTIMIZE_CACHE_DIR;
14	$this->delayed = AUTOPTIMIZE_CACHE_DELAY;
15	$this->nogzip = AUTOPTIMIZE_CACHE_NOGZIP;
16	if($this->nogzip == false)
17	$this->filename = 'autoptimize_'.$md5.'.php';
18	else
19	$this->filename = 'autoptimize_'.$md5.'.'.$ext;
20	}
21
22	public function check()
23	{
24	if(!file_exists($this->cachedir.$this->filename))
25	{
26	//No cached file, sorry
27	return false;
28	}
29	//Cache exists!
30	return true;
31	}
32
33	public function retrieve()
34	{
35	if($this->check())
36	{
37	if($this->nogzip == false)
38	return file_get_contents($this->cachedir.$this->filename.'.none');
39	else
40	return file_get_contents($this->cachedir.$this->filename);
41	}
42	return false;
43	}
44
45	public function cache($code,$mime)
46	{
47	if($this->nogzip == false)
48	{
49	$file = ($this->delayed ? 'delayed.php' : 'default.php');
50	$phpcode = file_get_contents(WP_PLUGIN_DIR.'/autoptimize/config/'.$file);
51	$phpcode = str_replace(array('%%CONTENT%%','exit;'),array($mime,''),$phpcode);
52	file_put_contents($this->cachedir.$this->filename,$phpcode);
53	file_put_contents($this->cachedir.$this->filename.'.none',$code);
54	if(!$this->delayed)
55	{
56	//Compress now!
57	file_put_contents($this->cachedir.$this->filename.'.deflate',gzencode($code,9,FORCE_DEFLATE));
58	file_put_contents($this->cachedir.$this->filename.'.gzip',gzencode($code,9,FORCE_GZIP));
59	}
60	}else{
61	//Write code to cache without doing anything else
62	file_put_contents($this->cachedir.$this->filename,$code);
63	}
64	}
65
66	public function getname()
67	{
68	return $this->filename;
69	}
70
71	static function clearall()
72	{
73	//Cache not available :(
74	if(!autoptimizeCache::cacheavail())
75	return false;
76
77	//Clean the cachedir
78	$scan = scandir(AUTOPTIMIZE_CACHE_DIR);
79	foreach($scan as $file)
80	{
81	if(!in_array($file,array('.','..')) && strpos($file,'autoptimize') !== false && is_file(AUTOPTIMIZE_CACHE_DIR.$file))
82	{
83	@unlink(AUTOPTIMIZE_CACHE_DIR.$file);
84	}
85	}
86
87	// Do we need to clean any caching plugins cache-files?
88	if(function_exists('wp_cache_clear_cache')) {
89	wp_cache_clear_cache(); // wp super cache
90	} else if ( function_exists('w3tc_pgcache_flush') ) {
91	w3tc_pgcache_flush(); //w3 total cache
92	} else if ( function_exists('hyper_cache_invalidate') ) {
93	hyper_cache_invalidate(); // hypercache
94	} else if ( function_exists('wp_fast_cache_bulk_delete_all') ) {
95	wp_fast_cache_bulk_delete_all(); // wp fast cache
96	} else if (class_exists("WpFastestCache")) {
97	$wpfc = new WpFastestCache(); // wp fastest cache
98	$wpfc -> deleteCache();
99	} else if ( class_exists("c_ws_plugin__qcache_purging_routines") ) {
100	c_ws_plugin__qcache_purging_routines::purge_cache_dir(); // quick cache
101	} else if(file_exists(WP_CONTENT_DIR.'/wp-cache-config.php') && function_exists('prune_super_cache')){
102	// fallback for WP-Super-Cache
103	global $cache_path;
104	prune_super_cache($cache_path.'supercache/',true);
105	prune_super_cache($cache_path,true);
106	}
107
108	return true;
109	}
110
111	static function stats()
112	{
113	//Cache not available :(
114	if(!autoptimizeCache::cacheavail())
115	return 0;
116
117	//Count cached info
118	$count = 0;
119	$scan = scandir(AUTOPTIMIZE_CACHE_DIR);
120	foreach($scan as $file)
121	{
122	if(!in_array($file,array('.','..')) && strpos($file,'autoptimize') !== false)
123	{
124	if(is_file(AUTOPTIMIZE_CACHE_DIR.$file))
125	{
126	if(AUTOPTIMIZE_CACHE_NOGZIP && (strpos($file,'.js') !== false \|\| strpos($file,'.css') !== false))
127	{
128	$count++;
129	}elseif(!AUTOPTIMIZE_CACHE_NOGZIP && strpos($file,'.none') !== false){
130	$count++;
131	}/*else{
132	//Tricky one... it was a dir or a gzip/deflate file
133	}*/
134	}
135	}
136	}
137
138	//Tell the number of instances
139	return $count;
140	}
141
142	static function cacheavail()
143	{
144	if(!defined('AUTOPTIMIZE_CACHE_DIR'))
145	{
146	//We didn't set a cache
147	return false;
148	}
149
150	//Check for existence
151	if(!file_exists(AUTOPTIMIZE_CACHE_DIR))
152	{
153	@mkdir(AUTOPTIMIZE_CACHE_DIR,0775,true);
154	if(!file_exists(AUTOPTIMIZE_CACHE_DIR))
155	{
156	//Where should we cache?
157	return false;
158	}
159	}
160
161	if(!is_writable(AUTOPTIMIZE_CACHE_DIR))
162	{
163	//How are we supposed to write?
164	return false;
165	}
166
167	/** write index.html here to avoid prying eyes */
168	$indexFile=AUTOPTIMIZE_CACHE_DIR.'/index.html';
169	if(!is_file($indexFile)) {
170	@file_put_contents($indexFile,'<html><body>Generated by <a href="http://wordpress.org/extend/plugins/autoptimize/">Autoptimize</a></body></html>');
171	}
172
173	/** write .htaccess here to overrule wp_super_cache */
174	$htAccess=AUTOPTIMIZE_CACHE_DIR.'/.htaccess';
175	if(!is_file($htAccess)) {
176	@file_put_contents($htAccess,
177	'<IfModule mod_headers.c>
178	Header set Vary "Accept-Encoding"
179	Header set Cache-Control "max-age=10672000, must-revalidate"
180	</IfModule>
181	<IfModule mod_expires.c>
182	ExpiresActive On
183	ExpiresByType text/css A30672000
184	ExpiresByType text/javascript A30672000
185	ExpiresByType application/javascript A30672000
186	</IfModule>');
187	}
188
189	//All OK
190	return true;
191	}
192	}
193