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
|
<?php
/**
* Created by PhpStorm.
* User: Uwe Tews
* Date: 04.12.2014
* Time: 06:08
*/
/**
* Smarty Resource Data Object
* Cache Data Container for Template Files
*
* @package Smarty
* @subpackage TemplateResources
* @author Rodney Rehm
*/
class Smarty_Template_Cached extends Smarty_Template_Resource_Base
{
/**
* Cache Is Valid
*
* @var boolean
*/
public $valid = null;
/**
* CacheResource Handler
*
* @var Smarty_CacheResource
*/
public $handler = null;
/**
* Template Cache Id (Smarty_Internal_Template::$cache_id)
*
* @var string
*/
public $cache_id = null;
/**
* saved cache lifetime in seconds
*
* @var integer
*/
public $cache_lifetime = 0;
/**
* Id for cache locking
*
* @var string
*/
public $lock_id = null;
/**
* flag that cache is locked by this instance
*
* @var bool
*/
public $is_locked = false;
/**
* Source Object
*
* @var Smarty_Template_Source
*/
public $source = null;
/**
* Nocache hash codes of processed compiled templates
*
* @var array
*/
public $hashes = array();
/**
* Flag if this is a cache resource
*
* @var bool
*/
public $isCache = true;
/**
* create Cached Object container
*
* @param Smarty_Internal_Template $_template template object
*/
public function __construct(Smarty_Internal_Template $_template)
{
$this->compile_id = $_template->compile_id;
$this->cache_id = $_template->cache_id;
$this->source = $_template->source;
if (!class_exists('Smarty_CacheResource', false)) {
require SMARTY_SYSPLUGINS_DIR . 'smarty_cacheresource.php';
}
$this->handler = Smarty_CacheResource::load($_template->smarty);
}
/**
* @param Smarty_Internal_Template $_template
*
* @return Smarty_Template_Cached
*/
static function load(Smarty_Internal_Template $_template)
{
$_template->cached = new Smarty_Template_Cached($_template);
$_template->cached->handler->populate($_template->cached, $_template);
// caching enabled ?
if (!($_template->caching == Smarty::CACHING_LIFETIME_CURRENT ||
$_template->caching == Smarty::CACHING_LIFETIME_SAVED) || $_template->source->handler->recompiled
) {
$_template->cached->valid = false;
}
return $_template->cached;
}
/**
* Render cache template
*
* @param \Smarty_Internal_Template $_template
* @param bool $no_output_filter
*
* @throws \Exception
*/
public function render(Smarty_Internal_Template $_template, $no_output_filter = true)
{
if ($this->isCached($_template)) {
if ($_template->smarty->debugging) {
if (!isset($_template->smarty->_debug)) {
$_template->smarty->_debug = new Smarty_Internal_Debug();
}
$_template->smarty->_debug->start_cache($_template);
}
if (!$this->processed) {
$this->process($_template);
}
$this->getRenderedTemplateCode($_template);
if ($_template->smarty->debugging) {
$_template->smarty->_debug->end_cache($_template);
}
return;
} else {
$_template->smarty->ext->_updateCache->updateCache($this, $_template, $no_output_filter);
}
}
/**
* Check if cache is valid, lock cache if required
*
* @param \Smarty_Internal_Template $_template
*
* @return bool flag true if cache is valid
*/
public function isCached(Smarty_Internal_Template $_template)
{
if ($this->valid !== null) {
return $this->valid;
}
while (true) {
while (true) {
if ($this->exists === false || $_template->smarty->force_compile || $_template->smarty->force_cache) {
$this->valid = false;
} else {
$this->valid = true;
}
if ($this->valid && $_template->caching == Smarty::CACHING_LIFETIME_CURRENT &&
$_template->cache_lifetime >= 0 && time() > ($this->timestamp + $_template->cache_lifetime)
) {
// lifetime expired
$this->valid = false;
}
if ($this->valid && $_template->smarty->compile_check == 1 &&
$_template->source->getTimeStamp() > $this->timestamp
) {
$this->valid = false;
}
if ($this->valid || !$_template->smarty->cache_locking) {
break;
}
if (!$this->handler->locked($_template->smarty, $this)) {
$this->handler->acquireLock($_template->smarty, $this);
break 2;
}
$this->handler->populate($this, $_template);
}
if ($this->valid) {
if (!$_template->smarty->cache_locking || $this->handler->locked($_template->smarty, $this) === null) {
// load cache file for the following checks
if ($_template->smarty->debugging) {
$_template->smarty->_debug->start_cache($_template);
}
if ($this->handler->process($_template, $this) === false) {
$this->valid = false;
} else {
$this->processed = true;
}
if ($_template->smarty->debugging) {
$_template->smarty->_debug->end_cache($_template);
}
} else {
$this->is_locked = true;
continue;
}
} else {
return $this->valid;
}
if ($this->valid && $_template->caching === Smarty::CACHING_LIFETIME_SAVED &&
$_template->cached->cache_lifetime >= 0 &&
(time() > ($_template->cached->timestamp + $_template->cached->cache_lifetime))
) {
$this->valid = false;
}
if ($_template->smarty->cache_locking) {
if (!$this->valid) {
$this->handler->acquireLock($_template->smarty, $this);
} elseif ($this->is_locked) {
$this->handler->releaseLock($_template->smarty, $this);
}
}
return $this->valid;
}
return $this->valid;
}
/**
* Process cached template
*
* @param Smarty_Internal_Template $_template template object
* @param bool $update flag if called because cache update
*/
public function process(Smarty_Internal_Template $_template, $update = false)
{
if ($this->handler->process($_template, $this, $update) === false) {
$this->valid = false;
}
if ($this->valid) {
$this->processed = true;
} else {
$this->processed = false;
}
}
/**
* Read cache content from handler
*
* @param Smarty_Internal_Template $_template template object
*
* @return string|false content
*/
public function read(Smarty_Internal_Template $_template)
{
if (!$_template->source->handler->recompiled) {
return $this->handler->readCachedContent($_template);
}
return false;
}
}
|
