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<?php
/**
* Project: Smarty: the PHP compiling template engine
* File: smarty_internal_cache.php
* SVN: $Id: $
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* For questions, help, comments, discussion, etc., please join the
* Smarty mailing list. Send a blank e-mail to
* smarty-discussion-subscribe@googlegroups.com
*
* @link http://www.smarty.net/
* @copyright 2008 New Digital Group, Inc.
* @author Monte Ohrt <monte at ohrt dot com>
* @author Uwe Tews
* @package Smarty
* @subpackage PluginsInternal
* @version 3-SVN$Rev: 3286 $
*/
class Smarty_Internal_Cache {
protected $smarty;
function __construct($smarty) {
$this->smarty = $smarty;
}
/**
* Loads cache resource.
*
* @return object of cache resource
*/
public function loadResource($type = null) {
if (!isset($type)) {
$type = $this->smarty->caching_type;
}
// already loaded?
if (isset($this->smarty->cache_resource_objects[$type])) {
return $this->smarty->cache_resource_objects[$type];
}
if (in_array($type, $this->smarty->cache_resource_types)) {
$cache_resource_class = 'Smarty_Internal_CacheResource_' . ucfirst($type);
return $this->smarty->cache_resource_objects[$type] = new $cache_resource_class($this->smarty);
}
else {
// try plugins dir
$cache_resource_class = 'Smarty_CacheResource_' . ucfirst($type);
if ($this->smarty->loadPlugin($cache_resource_class)) {
return $this->smarty->cache_resource_objects[$type] = new $cache_resource_class($this->smarty);
}
else {
throw new Exception("Unable to load cache resource '{$type}'");
}
}
}
/**
* Empty cache folder
*
* @param integer $exp_time expiration time
* @param string $type resource type
* @return integer number of cache files deleted
*/
function clearAll($exp_time = null, $type = null)
{
return $this->loadResource($type)->clearAll($exp_time);
}
/**
* Empty cache for a specific template
*
* @param string $template_name template name
* @param string $cache_id cache id
* @param string $compile_id compile id
* @param integer $exp_time expiration time
* @param string $type resource type
* @return integer number of cache files deleted
*/
function clear($template_name, $cache_id = null, $compile_id = null, $exp_time = null, $type = null)
{
// load cache resource
$cacheResource = $this->loadResource($type);
return $cacheResource->clear($template_name, $cache_id, $compile_id, $exp_time);
}
}
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