author | Markus Bröker <broeker.markus@googlemail.com> |
Fri, 13 Nov 2015 17:01:42 +0100 | |
changeset 13 | 4690a1ccb7cc |
parent 0 | 4869aea77e21 |
permissions | -rw-r--r-- |
0
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Bröker-Framework BFW-1
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<?php |
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/** |
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* Smarty Internal Plugin |
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* |
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* @package Smarty |
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* @subpackage Cacher |
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*/ |
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|
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/** |
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* Cache Handler API |
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* |
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* @package Smarty |
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* @subpackage Cacher |
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* @author Rodney Rehm |
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*/ |
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abstract class Smarty_CacheResource { |
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/** |
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* resource types provided by the core |
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* |
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* @var array |
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*/ |
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protected static $sysplugins = array( |
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'file' => 'smarty_internal_cacheresource_file.php', |
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); |
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|
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/** |
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* populate Cached Object with meta data from Resource |
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* |
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* @param Smarty_Template_Cached $cached cached object |
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* @param Smarty_Internal_Template $_template template object |
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* |
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* @return void |
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*/ |
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abstract public function populate(Smarty_Template_Cached $cached, Smarty_Internal_Template $_template); |
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|
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/** |
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* populate Cached Object with timestamp and exists from Resource |
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* |
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* @param Smarty_Template_Cached $cached |
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* |
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* @return void |
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*/ |
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abstract public function populateTimestamp(Smarty_Template_Cached $cached); |
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|
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/** |
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* Read the cached template and process header |
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* |
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* @param Smarty_Internal_Template $_template template object |
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* @param Smarty_Template_Cached $cached cached object |
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* |
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* @return boolean true or false if the cached content does not exist |
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*/ |
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abstract public function process(Smarty_Internal_Template $_template, Smarty_Template_Cached $cached = null); |
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|
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/** |
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* Write the rendered template output to cache |
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* |
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* @param Smarty_Internal_Template $_template template object |
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* @param string $content content to cache |
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* |
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* @return boolean success |
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*/ |
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abstract public function writeCachedContent(Smarty_Internal_Template $_template, $content); |
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|
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/** |
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* Return cached content |
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* |
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* @param Smarty_Internal_Template $_template template object |
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* |
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* @return null|string |
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*/ |
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public function getCachedContent(Smarty_Internal_Template $_template) { |
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if ($_template->cached->handler->process($_template)) { |
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ob_start(); |
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$_template->properties['unifunc']($_template); |
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|
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return ob_get_clean(); |
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} |
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|
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return null; |
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} |
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|
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/** |
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* Empty cache |
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* |
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* @param Smarty $smarty Smarty object |
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* @param integer $exp_time expiration time (number of seconds, not timestamp) |
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* |
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* @return integer number of cache files deleted |
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*/ |
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abstract public function clearAll(Smarty $smarty, $exp_time = null); |
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|
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/** |
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* Empty cache for a specific template |
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* |
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* @param Smarty $smarty Smarty object |
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* @param string $resource_name template name |
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* @param string $cache_id cache id |
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* @param string $compile_id compile id |
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* @param integer $exp_time expiration time (number of seconds, not timestamp) |
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* |
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* @return integer number of cache files deleted |
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*/ |
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abstract public function clear(Smarty $smarty, $resource_name, $cache_id, $compile_id, $exp_time); |
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|
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/** |
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* @param Smarty $smarty |
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* @param Smarty_Template_Cached $cached |
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* |
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* @return bool|null |
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*/ |
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public function locked(Smarty $smarty, Smarty_Template_Cached $cached) { |
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// theoretically locking_timeout should be checked against time_limit (max_execution_time) |
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$start = microtime(true); |
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$hadLock = null; |
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while ($this->hasLock($smarty, $cached)) { |
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$hadLock = true; |
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if (microtime(true) - $start > $smarty->locking_timeout) { |
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// abort waiting for lock release |
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return false; |
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} |
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sleep(1); |
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} |
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|
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return $hadLock; |
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} |
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|
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128 |
/** |
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129 |
* Check is cache is locked for this template |
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* |
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* @param Smarty $smarty |
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* @param Smarty_Template_Cached $cached |
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* |
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* @return bool |
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135 |
*/ |
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136 |
public function hasLock(Smarty $smarty, Smarty_Template_Cached $cached) { |
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// check if lock exists |
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138 |
return false; |
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} |
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140 |
|
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141 |
/** |
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142 |
* Lock cache for this template |
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143 |
* |
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144 |
* @param Smarty $smarty |
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* @param Smarty_Template_Cached $cached |
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146 |
* |
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* @return bool |
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148 |
*/ |
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public function acquireLock(Smarty $smarty, Smarty_Template_Cached $cached) { |
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// create lock |
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151 |
return true; |
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152 |
} |
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153 |
|
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154 |
/** |
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155 |
* Unlock cache for this template |
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156 |
* |
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157 |
* @param Smarty $smarty |
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158 |
* @param Smarty_Template_Cached $cached |
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159 |
* |
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160 |
* @return bool |
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161 |
*/ |
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162 |
public function releaseLock(Smarty $smarty, Smarty_Template_Cached $cached) { |
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163 |
// release lock |
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164 |
return true; |
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165 |
} |
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166 |
|
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167 |
/** |
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|
168 |
* Load Cache Resource Handler |
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169 |
* |
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170 |
* @param Smarty $smarty Smarty object |
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171 |
* @param string $type name of the cache resource |
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172 |
* |
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173 |
* @throws SmartyException |
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174 |
* @return Smarty_CacheResource Cache Resource Handler |
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175 |
*/ |
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176 |
public static function load(Smarty $smarty, $type = null) { |
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177 |
if (!isset($type)) { |
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178 |
$type = $smarty->caching_type; |
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179 |
} |
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180 |
|
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181 |
// try smarty's cache |
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182 |
if (isset($smarty->_cacheresource_handlers[$type])) { |
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183 |
return $smarty->_cacheresource_handlers[$type]; |
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184 |
} |
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185 |
|
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|
186 |
// try registered resource |
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|
187 |
if (isset($smarty->registered_cache_resources[$type])) { |
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|
188 |
// do not cache these instances as they may vary from instance to instance |
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189 |
return $smarty->_cacheresource_handlers[$type] = $smarty->registered_cache_resources[$type]; |
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190 |
} |
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|
191 |
// try sysplugins dir |
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|
192 |
if (isset(self::$sysplugins[$type])) { |
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193 |
$cache_resource_class = 'Smarty_Internal_CacheResource_' . ucfirst($type); |
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194 |
if (!class_exists($cache_resource_class, false)) { |
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|
195 |
require SMARTY_SYSPLUGINS_DIR . self::$sysplugins[$type]; |
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|
196 |
} |
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197 |
return $smarty->_cacheresource_handlers[$type] = new $cache_resource_class(); |
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198 |
} |
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|
199 |
// try plugins dir |
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|
200 |
$cache_resource_class = 'Smarty_CacheResource_' . ucfirst($type); |
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|
201 |
if ($smarty->loadPlugin($cache_resource_class)) { |
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|
202 |
return $smarty->_cacheresource_handlers[$type] = new $cache_resource_class(); |
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|
203 |
} |
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|
204 |
// give up |
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|
205 |
throw new SmartyException("Unable to load cache resource '{$type}'"); |
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|
206 |
} |
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|
207 |
|
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|
208 |
/** |
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|
209 |
* Invalid Loaded Cache Files |
4869aea77e21
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|
210 |
* |
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|
211 |
* @param Smarty $smarty Smarty object |
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|
212 |
*/ |
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|
213 |
public static function invalidLoadedCache(Smarty $smarty) { |
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|
214 |
foreach ($smarty->template_objects as $tpl) { |
4869aea77e21
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|
215 |
if (isset($tpl->cached)) { |
4869aea77e21
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|
216 |
$tpl->cached->valid = false; |
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|
217 |
$tpl->cached->processed = false; |
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|
218 |
} |
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|
219 |
} |
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|
220 |
} |
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|
221 |
} |