freenetis-github/system/libraries/drivers/Cache/Xcache.php @ f5adf00c
| 8baed187 | Michal Kliment | <?php defined('SYSPATH') or die('No direct script access.');
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/**
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* Xcache Cache driver.
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*
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* @package Cache:Xcache
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* @author Kohana Team
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* @copyright (c) 2007-2008 Kohana Team
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* @license http://kohanaphp.com/license.html
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*/
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class Cache_Xcache_Driver implements Cache_Driver {
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public function __construct()
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{
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if ( ! extension_loaded('xcache'))
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throw new Kohana_Exception('cache.extension_not_loaded', 'xcache');
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}
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public function get($id)
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{
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if (xcache_isset($id))
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return xcache_get($id);
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return FALSE;
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}
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public function set($id, $data, $tags, $expiration)
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{
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count($tags) and Log::add('error', 'Cache: tags are unsupported by the Xcache driver');
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return xcache_set($id, $data, $expiration);
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}
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public function find($tag)
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{
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Log::add('error', 'Cache: tags are unsupported by the Xcache driver');
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return FALSE;
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}
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public function delete($id, $tag = FALSE)
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{
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if ($id === TRUE)
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{
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Log::add('error', 'Cache: tags are unsupported by the Xcache driver');
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return TRUE;
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}
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elseif ($tag == FALSE)
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{
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// Do the login
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$this->auth();
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$result = TRUE;
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for($i = 0, $max = xcache_count(XC_TYPE_VAR); $i < $max; $i++)
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{
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if ( ! xcache_clear_cache(XC_TYPE_VAR, $i))
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{
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$result = FALSE;
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break;
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}
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}
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// Undo the login
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$this->auth(TRUE);
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return $result;
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}
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else
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{
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return TRUE;
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}
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}
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public function delete_expired()
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{
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return TRUE;
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}
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private function auth($reverse = FALSE)
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{
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static $backup = array();
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$keys = array('PHP_AUTH_USER', 'PHP_AUTH_PW');
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foreach ($keys as $key)
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{
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if ($reverse)
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{
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if (isset($backup[$key]))
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{
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$_SERVER[$key] = $backup[$key];
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unset($backup[$key]);
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}
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else
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{
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unset($_SERVER[$key]);
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}
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}
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else
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{
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$value = getenv($key);
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if ( ! empty($value))
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{
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$backup[$key] = $value;
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}
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$_SERVER[$key] = Config::item('cache_xcache.__'.$key);
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}
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}
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}
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} // End Cache Xcache Driver
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