autoptimize / classes / autoptimizeCache.php

autoptimizeCache.php in Autoptimize 1.2, at classes/autoptimizeCache.php

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1	<?php
2
3	class autoptimizeCache
4	{
5	private $filename;
6	private $mime;
7	private $cachedir;
8	private $delayed;
9
10	public function __construct($md5,$ext='php')
11	{
12	$this->cachedir = AUTOPTIMIZE_CACHE_DIR;
13	$this->delayed = AUTOPTIMIZE_CACHE_DELAY;
14	$this->nogzip = AUTOPTIMIZE_CACHE_NOGZIP;
15	if($this->nogzip == false)
16	$this->filename = 'autoptimize_'.$md5.'.php';
17	else
18	$this->filename = 'autoptimize_'.$md5.'.'.$ext;
19	}
20
21	public function check()
22	{
23	if(!file_exists($this->cachedir.$this->filename))
24	{
25	//No cached file, sorry
26	return false;
27	}
28	//Cache exists!
29	return true;
30	}
31
32	public function retrieve()
33	{
34	if($this->check())
35	{
36	if($this->nogzip == false)
37	return file_get_contents($this->cachedir.$this->filename.'.none');
38	else
39	return file_get_contents($this->cachedir.$this->filename);
40	}
41	return false;
42	}
43
44	public function cache($code,$mime)
45	{
46	if($this->nogzip == false)
47	{
48	$file = ($this->delayed ? 'delayed.php' : 'default.php');
49	$phpcode = file_get_contents(WP_PLUGIN_DIR.'/autoptimize/config/'.$file);
50	$phpcode = str_replace(array('%%CONTENT%%','exit;'),array($mime,''),$phpcode);
51	file_put_contents($this->cachedir.$this->filename,$phpcode);
52	file_put_contents($this->cachedir.$this->filename.'.none',$code);
53	if(!$this->delayed)
54	{
55	//Compress now!
56	file_put_contents($this->cachedir.$this->filename.'.deflate',gzencode($code,9,FORCE_DEFLATE));
57	file_put_contents($this->cachedir.$this->filename.'.gzip',gzencode($code,9,FORCE_GZIP));
58	}
59	}else{
60	//Write code to cache without doing anything else
61	file_put_contents($this->cachedir.$this->filename,$code);
62	}
63	}
64
65	public function getname()
66	{
67	return $this->filename;
68	}
69
70	static function clearall()
71	{
72	//Cache not available :(
73	if(!autoptimizeCache::cacheavail())
74	return false;
75
76	//Clean the cachedir
77	$scan = scandir(AUTOPTIMIZE_CACHE_DIR);
78	foreach($scan as $file)
79	{
80	if(!in_array($file,array('.','..')) && strpos($file,'autoptimize') !== false && is_file(AUTOPTIMIZE_CACHE_DIR.$file))
81	{
82	@unlink(AUTOPTIMIZE_CACHE_DIR.$file);
83	}
84	}
85
86	//Do we need to clean WP Super Cache's cache files?
87	if(function_exists('wp_cache_clear_cache'))
88	{
89	//Newer WP-Super-Cache
90	//See http://ocaoimh.ie/wp-super-cache-developers/
91	wp_cache_clear_cache();
92	}elseif(file_exists(WP_CONTENT_DIR.'/wp-cache-config.php') && function_exists('prune_super_cache')){
93	//Old WP-Super-Cache
94	global $cache_path;
95	prune_super_cache($cache_path.'supercache/',true);
96	prune_super_cache($cache_path,true);
97	}
98
99	return true;
100	}
101
102	static function stats()
103	{
104	//Cache not available :(
105	if(!autoptimizeCache::cacheavail())
106	return 0;
107
108	//Count cached info
109	$count = 0;
110	$scan = scandir(AUTOPTIMIZE_CACHE_DIR);
111	foreach($scan as $file)
112	{
113	if(!in_array($file,array('.','..')) && strpos($file,'autoptimize') !== false)
114	{
115	if(is_file(AUTOPTIMIZE_CACHE_DIR.$file))
116	{
117	if(AUTOPTIMIZE_CACHE_NOGZIP && (strpos($file,'.js') !== false \|\| strpos($file,'.css') !== false))
118	{
119	$count++;
120	}elseif(!AUTOPTIMIZE_CACHE_NOGZIP && strpos($file,'.none') !== false){
121	$count++;
122	}/*else{
123	//Tricky one... it was a dir or a gzip/deflate file
124	}*/
125	}
126	}
127	}
128
129	//Tell the number of instances
130	return $count;
131	}
132
133	static function cacheavail()
134	{
135	if(!defined('AUTOPTIMIZE_CACHE_DIR'))
136	{
137	//We didn't set a cache
138	return false;
139	}
140
141	//Check for existence
142	if(!file_exists(AUTOPTIMIZE_CACHE_DIR))
143	{
144	@mkdir(AUTOPTIMIZE_CACHE_DIR,0775,true);
145	if(!file_exists(AUTOPTIMIZE_CACHE_DIR))
146	{
147	//Where should we cache?
148	return false;
149	}
150	}
151
152	if(!is_writable(AUTOPTIMIZE_CACHE_DIR))
153	{
154	//How are we supposed to write?
155	return false;
156	}
157
158	//All OK
159	return true;
160	}
161	}
162