autoptimize / classes / autoptimizeCache.php

autoptimizeCache.php in Autoptimize 1.6.6, 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 WP Super Cache's cache files?
88	if(function_exists('wp_cache_clear_cache'))
89	{
90	//Newer WP-Super-Cache
91	//See http://ocaoimh.ie/wp-super-cache-developers/
92	wp_cache_clear_cache();
93	}elseif(file_exists(WP_CONTENT_DIR.'/wp-cache-config.php') && function_exists('prune_super_cache')){
94	//Old WP-Super-Cache
95	global $cache_path;
96	prune_super_cache($cache_path.'supercache/',true);
97	prune_super_cache($cache_path,true);
98	}
99
100	return true;
101	}
102
103	static function stats()
104	{
105	//Cache not available :(
106	if(!autoptimizeCache::cacheavail())
107	return 0;
108
109	//Count cached info
110	$count = 0;
111	$scan = scandir(AUTOPTIMIZE_CACHE_DIR);
112	foreach($scan as $file)
113	{
114	if(!in_array($file,array('.','..')) && strpos($file,'autoptimize') !== false)
115	{
116	if(is_file(AUTOPTIMIZE_CACHE_DIR.$file))
117	{
118	if(AUTOPTIMIZE_CACHE_NOGZIP && (strpos($file,'.js') !== false \|\| strpos($file,'.css') !== false))
119	{
120	$count++;
121	}elseif(!AUTOPTIMIZE_CACHE_NOGZIP && strpos($file,'.none') !== false){
122	$count++;
123	}/*else{
124	//Tricky one... it was a dir or a gzip/deflate file
125	}*/
126	}
127	}
128	}
129
130	//Tell the number of instances
131	return $count;
132	}
133
134	static function cacheavail()
135	{
136	if(!defined('AUTOPTIMIZE_CACHE_DIR'))
137	{
138	//We didn't set a cache
139	return false;
140	}
141
142	//Check for existence
143	if(!file_exists(AUTOPTIMIZE_CACHE_DIR))
144	{
145	@mkdir(AUTOPTIMIZE_CACHE_DIR,0775,true);
146	if(!file_exists(AUTOPTIMIZE_CACHE_DIR))
147	{
148	//Where should we cache?
149	return false;
150	}
151	}
152
153	if(!is_writable(AUTOPTIMIZE_CACHE_DIR))
154	{
155	//How are we supposed to write?
156	return false;
157	}
158
159	/** write index.html here to avoid prying eyes */
160	$indexFile=AUTOPTIMIZE_CACHE_DIR.'/index.html';
161	if(!is_file($indexFile)) {
162	@file_put_contents($indexFile,'<html><body>Generated by <a href="http://wordpress.org/extend/plugins/autoptimize/">Autoptimize</a></body></html>');
163	}
164
165	//All OK
166	return true;
167	}
168	}
169