/lib/Cake/Cache/Engine/ApcEngine.php - pictcode - Redmine

pictcode / lib / Cake / Cache / Engine / ApcEngine.php @ master

       <?php
       /**
        * APC storage engine for cache.
+       *
        * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
        * Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
+       *
        * Licensed under The MIT License
        * For full copyright and license information, please see the LICENSE.txt
        * Redistributions of files must retain the above copyright notice.
+       *
        * @copyright     Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
        * @link          http://cakephp.org CakePHP(tm) Project
        * @package       Cake.Cache.Engine
        * @since         CakePHP(tm) v 1.2.0.4933
        * @license       http://www.opensource.org/licenses/mit-license.php MIT License
        */
       /**
        * APC storage engine for cache
+       *
        * @package       Cake.Cache.Engine
        */
       class ApcEngine extends CacheEngine {
       /**
        * Contains the compiled group names
        * (prefixed with the global configuration prefix)
+       *
        * @var array
        */
               protected $_compiledGroupNames = array();
       /**
        * Initialize the Cache Engine
+       *
        * Called automatically by the cache frontend
        * To reinitialize the settings call Cache::engine('EngineName', [optional] settings = array());
+       *
        * @param array $settings array of setting for the engine
        * @return bool True if the engine has been successfully initialized, false if not
        * @see CacheEngine::__defaults
        */
               public function init($settings = array()) {
                       if (!isset($settings['prefix'])) {
                               $settings['prefix'] = Inflector::slug(APP_DIR) . '_';
+                      }
                       $settings += array('engine' => 'Apc');
                       parent::init($settings);
                       return function_exists('apc_dec');
+              }
       /**
        * Write data for key into cache
+       *
        * @param string $key Identifier for the data
        * @param mixed $value Data to be cached
        * @param int $duration How long to cache the data, in seconds
        * @return bool True if the data was successfully cached, false on failure
        */
               public function write($key, $value, $duration) {
                       $expires = 0;
                       if ($duration) {
                               $expires = time() + $duration;
+                      }
                       apc_store($key . '_expires', $expires, $duration);
                       return apc_store($key, $value, $duration);
+              }
       /**
        * Read a key from the cache
+       *
        * @param string $key Identifier for the data
        * @return mixed The cached data, or false if the data doesn't exist, has expired, or if there was an error fetching it
        */
               public function read($key) {
                       $time = time();
                       $cachetime = (int)apc_fetch($key . '_expires');
                       if ($cachetime !== 0 && ($cachetime < $time || ($time + $this->settings['duration']) < $cachetime)) {
                               return false;
+                      }
                       return apc_fetch($key);
+              }
       /**
        * Increments the value of an integer cached key
+       *
        * @param string $key Identifier for the data
        * @param int $offset How much to increment
        * @return New incremented value, false otherwise
        */
               public function increment($key, $offset = 1) {
                       return apc_inc($key, $offset);
+              }
       /**
        * Decrements the value of an integer cached key
+       *
        * @param string $key Identifier for the data
        * @param int $offset How much to subtract
        * @return New decremented value, false otherwise
        */
               public function decrement($key, $offset = 1) {
                       return apc_dec($key, $offset);
+              }
       /**
        * Delete a key from the cache
+       *
        * @param string $key Identifier for the data
        * @return bool True if the value was successfully deleted, false if it didn't exist or couldn't be removed
        */
               public function delete($key) {
                       return apc_delete($key);
+              }
       /**
        * Delete all keys from the cache. This will clear every cache config using APC.
+       *
        * @param bool $check If true, nothing will be cleared, as entries are removed
        *    from APC as they expired. This flag is really only used by FileEngine.
        * @return bool True Returns true.
        */
               public function clear($check) {
                       if ($check) {
                               return true;
+                      }
                       if (class_exists('APCIterator', false)) {
                               $iterator = new APCIterator(
                                       'user',
                                       '/^' . preg_quote($this->settings['prefix'], '/') . '/',
                                       APC_ITER_NONE
                               );
                               apc_delete($iterator);
                               return true;
+                      }
                       $cache = apc_cache_info('user');
                       foreach ($cache['cache_list'] as $key) {
                               if (strpos($key['info'], $this->settings['prefix']) === 0) {
                                       apc_delete($key['info']);
+                              }
+                      }
                       return true;
+              }
       /**
        * Returns the `group value` for each of the configured groups
        * If the group initial value was not found, then it initializes
        * the group accordingly.
+       *
        * @return array
        */
               public function groups() {
                       if (empty($this->_compiledGroupNames)) {
                               foreach ($this->settings['groups'] as $group) {
                                       $this->_compiledGroupNames[] = $this->settings['prefix'] . $group;
+                              }
+                      }
                       $groups = apc_fetch($this->_compiledGroupNames);
                       if (count($groups) !== count($this->settings['groups'])) {
                               foreach ($this->_compiledGroupNames as $group) {
                                       if (!isset($groups[$group])) {
                                               apc_store($group, 1);
                                               $groups[$group] = 1;
+                                      }
+                              }
                               ksort($groups);
+                      }
                       $result = array();
                       $groups = array_values($groups);
                       foreach ($this->settings['groups'] as $i => $group) {
                               $result[] = $group . $groups[$i];
+                      }
                       return $result;
+              }
       /**
        * Increments the group value to simulate deletion of all keys under a group
        * old values will remain in storage until they expire.
+       *
        * @param string $group The group to clear.
        * @return bool success
        */
               public function clearGroup($group) {
                       apc_inc($this->settings['prefix'] . $group, 1, $success);
                       return $success;
+              }
+      }