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
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
| <?php
class axMissingFileException extends RuntimeException {
public function __construct ($classname, $code = 0) {
parent::__construct("Class $classname is missing", $code);
}
}
interface axSerializable {
public function __sleep ();
public function __wakeup ();
}
interface axCacheAdapter {
public function __construct (axCacheManager $manager, $uri, array $options = array(), array & $data = array());
public function unfreeze ($data);
public function freeze ($data, $value);
public function validate ();
public function update ();
public function flush ();
public function getType ();
}
class axCacheManager {
protected $_cacheFile;
protected $_adapters;
protected $_caches;
public function __construct ($cache_file) {
$this->_cacheFile = $cache_file;
$this->_adapters = array();
if (!$r = $this->_load()) {
$this->_caches = array();
}
}
public function hasCache ($name) {
if (isset($this->_caches[$name]) && !isset($this->_adapters[$name]))
return $this->_createCache($name);
return isset($this->_adapters[$name]);
}
public function getCache ($name) {
return $this->hasCache($name) ? $this->_adapters[$name] : null;
}
public function setCache ($name, $type, $uri, array $options = array()) {
if ($this->hasCache($name))
return false;
switch ($type) {
case 'file': $type = 'axFileCacheAdapter'; break;
case 'session': $type = 'axSessionCacheAdapter'; break;
case 'memory': $type = 'axMemoryCacheAdapter'; break;
}
if (!class_exists($type, true))
throw new axMissingClassException($type);
if (!in_array('axCacheAdapter', class_implements($type)))
throw new RuntimeException("Class $type doesn't implement axCacheAdapter");
$this->_caches[$name] = array(
'adapter' => $type,
'uri' => $uri,
'options' => $options,
'data' => array(),
);
return $this->_createCache($name);
}
public function destroyCache ($cache) {
if (!$this->hasCache($cache))
return false;
if ($this->getCache($cache)->flush()) {
unset($this->_adapters[$cache]);
return $this->save();
}
return false;
}
public function flushCache ($cache) {
if (!$this->hasCache($cache))
return false;
return $this->getCache($cache)->flush();
}
public function getCacheType ($cache) {
if (!$this->hasCache($cache))
return false;
return $this->getCache($cache)->getType();
}
public function save () {
return (bool)file_put_contents($this->_cacheFile, '<?php $caches='.var_export($this->_caches, true).';');
}
protected function _load () {
if (!is_file($this->_cacheFile) || !is_readable($this->_cacheFile)) {
return false;
}
if (!require $this->_cacheFile) {
unlink($this->_cacheFile);
return false;
}
$this->_caches = $caches;
return true;
}
protected function _createCache ($name) {
if (!isset($this->_caches[$name]))
return false;
$parameters = & $this->_caches[$name];
if (!isset($parameters['adapter'], $parameters['uri'], $parameters['options'], $parameters['data']))
return false;
$adapter = $parameters['adapter'];
return $this->_adapters[$name] = new $adapter(
$this,
$parameters['uri'],
$parameters['options'],
$parameters['data']
);
}
}
abstract class axBaseCacheAdapter implements axCacheAdapter {
protected $_manager;
protected $_uri;
protected $_options;
protected $_data;
public function __construct (axCacheManager $manager, $uri, array $options = array(), array & $data = array()) {
if (!$manager)
throw new InvalidArgumentException("Manager cannot be null");
if (!$uri || !is_string($uri))
throw new InvalidArgumentException("Invalid URI");
$this->_manager = $manager;
$this->_uri = $uri;
$this->_options = $options;
$this->_data = & $data;
}
public function getUri () {
return $this->_uri;
}
public function getOption ($name) {
return isset($this->_options['name']) ? $this->_options['name'] : null;
}
public function getOptions () {
return $this->_options;
}
public function update () {
return $this->_manager->save($this);
}
}
class axFileCacheAdapter extends axBaseCacheAdapter {
protected $_path;
public function __construct (axCacheManager $manager, $uri, array $options = array(), array & $data = array()) {
$options += array(
'prefix' => '',
'extension' => '.cache',
'base64' => false,
'lifetime' => 3600,
'serialize' => false,
);
parent::__construct($manager, $uri, $options, $data);
if (strpos($this->_uri, 'file://') !== false)
$this->_path = substr($this->_uri, 7);
else
$this->_path = $this->_uri;
if (!$this->validate()) {
if (!is_dir($this->_path))
throw new RuntimeException("$this->_path is not a valid directory");
if (!is_writable($this->_path))
throw new RuntimeException("$this->_path is not writeable");
}
}
public function unfreeze ($name) {
if (!$this->validate())
return false;
$filename = $this->_getFilenameFromData($name);
if (!is_file($filename) || !isset($this->_data[$name]))
return false;
if ($this->_data[$name] && (time() - $this->_data[$name]) > $this->_options['lifetime']) {
unlink($filename);
return false;
}
if (!$buffer = file_get_contents($filename))
return false;
if ($this->_options['base64'])
$buffer = base64_decode($buffer);
return $this->_options['serialize'] ? unserialize($buffer) : $buffer;
}
public function freeze ($name, $value) {
if (!$this->validate())
return false;
if ($this->_options['serialize'] && is_object($value) && !$value instanceof axSerializable)
trigger_error("It is unsafe to store objects that doesn't implement axSerializable", E_USER_NOTICE);
$filename = $this->_getFilenameFromData($name);
$buffer = $this->_options['serialize'] ? serialize($value) : $value;
if ($this->_options['base64'])
$buffer = base64_encode($buffer);
if (file_put_contents($filename, $buffer)) {
$this->_data[$name] = time();
return $this->update();
}
return false;
}
public function validate () {
return is_dir($this->_path) && is_writable($this->_path);
}
public function flush () {
if (!$this->validate())
return false;
try {
$directory = new DirectoryIterator($this->_path);
}
catch (Exception $e) {
trigger_error("Cannot open directory $this->_path: " . $e->getMessage(), E_USER_WARNING);
return false;
}
$result = true;
$pattern = "~^{$this->_options['prefix']}.*{$this->_options['extension']}$~";
foreach ($directory as $file) {
if ($file->isFile() && preg_match($pattern, $file->getFilename()))
$result &= unlink($file->getPathname());
}
return $result && $this->update();
}
public function getType () {
return 'file';
}
protected function _getFilenameFromData ($name) {
return rtrim($this->_path, '/') . "/{$this->_options['prefix']}{$name}{$this->_options['extension']}";
}
} |
