-
Notifications
You must be signed in to change notification settings - Fork 0
/
Cache.php
250 lines (234 loc) · 9.45 KB
/
Cache.php
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to [email protected] so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Cache
* @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: Cache.php 23154 2010-10-18 17:41:06Z mabe $
*/
/**
* @package Zend_Cache
* @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
abstract class Zend_Cache
{
/**
* Standard frontends
*
* @var array
*/
public static $standardFrontends = array('Core', 'Output', 'Class', 'File', 'Function', 'Page');
/**
* Standard backends
*
* @var array
*/
public static $standardBackends = array('File', 'Sqlite', 'Memcached', 'Libmemcached', 'Apc', 'ZendPlatform',
'Xcache', 'TwoLevels', 'ZendServer_Disk', 'ZendServer_ShMem');
/**
* Standard backends which implement the ExtendedInterface
*
* @var array
*/
public static $standardExtendedBackends = array('File', 'Apc', 'TwoLevels', 'Memcached', 'Libmemcached', 'Sqlite');
/**
* Only for backward compatibility (may be removed in next major release)
*
* @var array
* @deprecated
*/
public static $availableFrontends = array('Core', 'Output', 'Class', 'File', 'Function', 'Page');
/**
* Only for backward compatibility (may be removed in next major release)
*
* @var array
* @deprecated
*/
public static $availableBackends = array('File', 'Sqlite', 'Memcached', 'Libmemcached', 'Apc', 'ZendPlatform', 'Xcache', 'TwoLevels');
/**
* Consts for clean() method
*/
const CLEANING_MODE_ALL = 'all';
const CLEANING_MODE_OLD = 'old';
const CLEANING_MODE_MATCHING_TAG = 'matchingTag';
const CLEANING_MODE_NOT_MATCHING_TAG = 'notMatchingTag';
const CLEANING_MODE_MATCHING_ANY_TAG = 'matchingAnyTag';
/**
* Factory
*
* @param mixed $frontend frontend name (string) or Zend_Cache_Frontend_ object
* @param mixed $backend backend name (string) or Zend_Cache_Backend_ object
* @param array $frontendOptions associative array of options for the corresponding frontend constructor
* @param array $backendOptions associative array of options for the corresponding backend constructor
* @param boolean $customFrontendNaming if true, the frontend argument is used as a complete class name ; if false, the frontend argument is used as the end of "Zend_Cache_Frontend_[...]" class name
* @param boolean $customBackendNaming if true, the backend argument is used as a complete class name ; if false, the backend argument is used as the end of "Zend_Cache_Backend_[...]" class name
* @param boolean $autoload if true, there will no #require_once for backend and frontend (useful only for custom backends/frontends)
* @throws Zend_Cache_Exception
* @return Zend_Cache_Core|Zend_Cache_Frontend
*/
public static function factory($frontend, $backend, $frontendOptions = array(), $backendOptions = array(), $customFrontendNaming = false, $customBackendNaming = false, $autoload = false)
{
if (is_string($backend)) {
$backendObject = self::_makeBackend($backend, $backendOptions, $customBackendNaming, $autoload);
} else {
if ((is_object($backend)) && (in_array('Zend_Cache_Backend_Interface', class_implements($backend)))) {
$backendObject = $backend;
} else {
self::throwException('backend must be a backend name (string) or an object which implements Zend_Cache_Backend_Interface');
}
}
if (is_string($frontend)) {
$frontendObject = self::_makeFrontend($frontend, $frontendOptions, $customFrontendNaming, $autoload);
} else {
if (is_object($frontend)) {
$frontendObject = $frontend;
} else {
self::throwException('frontend must be a frontend name (string) or an object');
}
}
$frontendObject->setBackend($backendObject);
return $frontendObject;
}
/**
* Backend Constructor
*
* @param string $backend
* @param array $backendOptions
* @param boolean $customBackendNaming
* @param boolean $autoload
* @return Zend_Cache_Backend
*/
public static function _makeBackend($backend, $backendOptions, $customBackendNaming = false, $autoload = false)
{
if (!$customBackendNaming) {
$backend = self::_normalizeName($backend);
}
if (in_array($backend, Zend_Cache::$standardBackends)) {
// we use a standard backend
$backendClass = 'Zend_Cache_Backend_' . $backend;
// security controls are explicit
#require_once str_replace('_', DIRECTORY_SEPARATOR, $backendClass) . '.php';
} else {
// we use a custom backend
if (!preg_match('~^[\w]+$~D', $backend)) {
Zend_Cache::throwException("Invalid backend name [$backend]");
}
if (!$customBackendNaming) {
// we use this boolean to avoid an API break
$backendClass = 'Zend_Cache_Backend_' . $backend;
} else {
$backendClass = $backend;
}
if (!$autoload) {
$file = str_replace('_', DIRECTORY_SEPARATOR, $backendClass) . '.php';
if (!(self::_isReadable($file))) {
self::throwException("file $file not found in include_path");
}
#require_once $file;
}
}
return new $backendClass($backendOptions);
}
/**
* Frontend Constructor
*
* @param string $frontend
* @param array $frontendOptions
* @param boolean $customFrontendNaming
* @param boolean $autoload
* @return Zend_Cache_Core|Zend_Cache_Frontend
*/
public static function _makeFrontend($frontend, $frontendOptions = array(), $customFrontendNaming = false, $autoload = false)
{
if (!$customFrontendNaming) {
$frontend = self::_normalizeName($frontend);
}
if (in_array($frontend, self::$standardFrontends)) {
// we use a standard frontend
// For perfs reasons, with frontend == 'Core', we can interact with the Core itself
$frontendClass = 'Zend_Cache_' . ($frontend != 'Core' ? 'Frontend_' : '') . $frontend;
// security controls are explicit
#require_once str_replace('_', DIRECTORY_SEPARATOR, $frontendClass) . '.php';
} else {
// we use a custom frontend
if (!preg_match('~^[\w]+$~D', $frontend)) {
Zend_Cache::throwException("Invalid frontend name [$frontend]");
}
if (!$customFrontendNaming) {
// we use this boolean to avoid an API break
$frontendClass = 'Zend_Cache_Frontend_' . $frontend;
} else {
$frontendClass = $frontend;
}
if (!$autoload) {
$file = str_replace('_', DIRECTORY_SEPARATOR, $frontendClass) . '.php';
if (!(self::_isReadable($file))) {
self::throwException("file $file not found in include_path");
}
#require_once $file;
}
}
return new $frontendClass($frontendOptions);
}
/**
* Throw an exception
*
* Note : for perf reasons, the "load" of Zend/Cache/Exception is dynamic
* @param string $msg Message for the exception
* @throws Zend_Cache_Exception
*/
public static function throwException($msg, Exception $e = null)
{
// For perfs reasons, we use this dynamic inclusion
#require_once 'Zend/Cache/Exception.php';
throw new Zend_Cache_Exception($msg, 0, $e);
}
/**
* Normalize frontend and backend names to allow multiple words TitleCased
*
* @param string $name Name to normalize
* @return string
*/
protected static function _normalizeName($name)
{
$name = ucfirst(strtolower($name));
$name = str_replace(array('-', '_', '.'), ' ', $name);
$name = ucwords($name);
$name = str_replace(' ', '', $name);
if (stripos($name, 'ZendServer') === 0) {
$name = 'ZendServer_' . substr($name, strlen('ZendServer'));
}
return $name;
}
/**
* Returns TRUE if the $filename is readable, or FALSE otherwise.
* This function uses the PHP include_path, where PHP's is_readable()
* does not.
*
* Note : this method comes from Zend_Loader (see #ZF-2891 for details)
*
* @param string $filename
* @return boolean
*/
private static function _isReadable($filename)
{
if (!$fh = @fopen($filename, 'r', true)) {
return false;
}
@fclose($fh);
return true;
}
}