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<?php
/**
* @package Joomla.Platform
* @subpackage Cache
*
* @copyright Copyright (C) 2005 - 2013 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
defined('JPATH_PLATFORM') or die;
/**
* WINCACHE cache storage handler
*
* @package Joomla.Platform
* @subpackage Cache
* @see http://php.net/manual/en/book.wincache.php
* @since 11.1
*/
class JCacheStorageWincache extends JCacheStorage
{
/**
* Constructor
*
* @param array $options Optional parameters.
*
* @since 11.1
*/
public function __construct($options = array())
{
parent::__construct($options);
}
/**
* Get cached data from WINCACHE by id and group
*
* @param string $id The cache data id
* @param string $group The cache data group
* @param boolean $checkTime True to verify cache time expiration threshold
*
* @return mixed Boolean false on failure or a cached data string
*
* @since 11.1
*/
public function get($id, $group, $checkTime = true)
{
$cache_id = $this->_getCacheId($id, $group);
$cache_content = wincache_ucache_get($cache_id);
return $cache_content;
}
/**
* Get all cached data
*
* @return array data
*
* @since 11.1
*/
public function getAll()
{
parent::getAll();
$allinfo = wincache_ucache_info();
$keys = $allinfo['cache_entries'];
$secret = $this->_hash;
$data = array();
foreach ($keys as $key)
{
$name = $key['key_name'];
$namearr = explode('-', $name);
if ($namearr !== false && $namearr[0] == $secret && $namearr[1] == 'cache')
{
$group = $namearr[2];
if (!isset($data[$group]))
{
$item = new JCacheStorageHelper($group);
}
else
{
$item = $data[$group];
}
if (isset($key['value_size']))
{
$item->updateSize($key['value_size'] / 1024);
}
else
{
// Dummy, WINCACHE version is too low.
$item->updateSize(1);
}
$data[$group] = $item;
}
}
return $data;
}
/**
* Store the data to WINCACHE by id and group
*
* @param string $id The cache data id
* @param string $group The cache data group
* @param string $data The data to store in cache
*
* @return boolean True on success, false otherwise
*
* @since 11.1
*/
public function store($id, $group, $data)
{
$cache_id = $this->_getCacheId($id, $group);
return wincache_ucache_set($cache_id, $data, $this->_lifetime);
}
/**
* Remove a cached data entry by id and group
*
* @param string $id The cache data id
* @param string $group The cache data group
*
* @return boolean True on success, false otherwise
*
* @since 11.1
*/
public function remove($id, $group)
{
$cache_id = $this->_getCacheId($id, $group);
return wincache_ucache_delete($cache_id);
}
/**
* Clean cache for a group given a mode.
*
* @param string $group The cache data group
* @param string $mode The mode for cleaning cache [group|notgroup]
* group mode : cleans all cache in the group
* notgroup mode : cleans all cache not in the group
*
* @return boolean True on success, false otherwise
*
* @since 11.1
*/
public function clean($group, $mode = null)
{
$allinfo = wincache_ucache_info();
$keys = $allinfo['cache_entries'];
$secret = $this->_hash;
foreach ($keys as $key)
{
if (strpos($key['key_name'], $secret . '-cache-' . $group . '-') === 0 xor $mode != 'group')
{
wincache_ucache_delete($key['key_name']);
}
}
return true;
}
/**
* Force garbage collect expired cache data as items are removed only on get/add/delete/info etc
*
* @return boolean True on success, false otherwise.
*
* @since 11.1
*/
public function gc()
{
$allinfo = wincache_ucache_info();
$keys = $allinfo['cache_entries'];
$secret = $this->_hash;
foreach ($keys as $key)
{
if (strpos($key['key_name'], $secret . '-cache-'))
{
wincache_ucache_get($key['key_name']);
}
}
}
/**
* Test to see if the cache storage is available.
*
* @return boolean True on success, false otherwise.
*/
public static function test()
{
$test = extension_loaded('wincache') && function_exists('wincache_ucache_get') && !strcmp(ini_get('wincache.ucenabled'), '1');
return $test;
}
}