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Revision Autor Zeilennr. Zeile
1 lars 1 
<?php
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/*
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 * This file is part of the symfony package.
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 * (c) 2004-2006 Fabien Potencier <fabien.potencier@symfony-project.com>
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 *
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 * For the full copyright and license information, please view the LICENSE
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 * file that was distributed with this source code.
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 */
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/**
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 * Cache class that stores cached content in EAccelerator.
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 *
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 * @package    symfony
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 * @subpackage cache
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 * @author     Fabien Potencier <fabien.potencier@symfony-project.com>
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 * @version    SVN: $Id: sfEAcceleratorCache.class.php 21908 2009-09-11 12:06:21Z fabien $
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 */
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class sfEAcceleratorCache extends sfCache
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{
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  /**
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   * Initializes this sfCache instance.
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   *
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   * Available options:
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   *
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   * * see sfCache for options available for all drivers
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   *
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   * @see sfCache
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   */
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  public function initialize($options = array())
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  {
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    parent::initialize($options);
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    if (!function_exists('eaccelerator_put') || !ini_get('eaccelerator.enable'))
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    {
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      throw new sfInitializationException('You must have EAccelerator installed and enabled to use sfEAcceleratorCache class (or perhaps you forgot to add --with-eaccelerator-shared-memory when installing).');
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    }
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  }
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 /**
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  * @see sfCache
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  */
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  public function get($key, $default = null)
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  {
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    $value = eaccelerator_get($this->getOption('prefix').$key);
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    return null === $value ? $default : $value;
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  }
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  /**
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   * @see sfCache
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   */
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  public function has($key)
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  {
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    return null !== eaccelerator_get($this->getOption('prefix'.$key));
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  }
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  /**
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   * @see sfCache
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   */
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  public function set($key, $data, $lifetime = null)
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  {
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    return eaccelerator_put($this->getOption('prefix').$key, $data, $this->getLifetime($lifetime));
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  }
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  /**
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   * @see sfCache
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   */
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  public function remove($key)
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  {
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    return eaccelerator_rm($this->getOption('prefix').$key);
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  }
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  /**
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   * @see sfCache
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   */
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  public function removePattern($pattern)
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  {
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    $infos = eaccelerator_list_keys();
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    if (is_array($infos))
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    {
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      $regexp = self::patternToRegexp($this->getOption('prefix').$pattern);
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      foreach ($infos as $info)
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      {
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        if (preg_match($regexp, $info['name']))
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        {
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          eaccelerator_rm($this->getOption('prefix').$key);
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        }
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      }
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    }
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  }
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  /**
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   * @see sfCache
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   */
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  public function clean($mode = sfCache::ALL)
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  {
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    if (sfCache::OLD === $mode)
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    {
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      return eaccelerator_gc();
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    }
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    $infos = eaccelerator_list_keys();
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    if (is_array($infos))
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    {
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      foreach ($infos as $info)
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      {
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        if (false !== strpos($info['name'], $this->getOption('prefix')))
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        {
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          // eaccelerator bug (http://eaccelerator.net/ticket/287)
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          $key = 0 === strpos($info['name'], ':') ? substr($info['name'], 1) : $info['name'];
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          if (!eaccelerator_rm($key))
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          {
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            return false;
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          }
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        }
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      }
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    }
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    return true;
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  }
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  /**
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   * @see sfCache
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   */
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  public function getLastModified($key)
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  {
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    if ($info = $this->getCacheInfo($key))
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    {
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      return $info['created'];
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    }
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    return 0;
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  }
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  /**
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   * @see sfCache
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   */
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  public function getTimeout($key)
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  {
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    if ($info = $this->getCacheInfo($key))
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    {
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      return -1 == $info['ttl'] ? 0 : $info['created'] + $info['ttl'];
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    }
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    return 0;
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  }
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  protected function getCacheInfo($key)
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  {
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    $infos = eaccelerator_list_keys();
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    if (is_array($infos))
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    {
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      foreach ($infos as $info)
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      {
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        if ($this->getOption('prefix').$key == $info['name'])
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        {
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          return $info;
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        }
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      }
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    }
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    return null;
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  }
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}