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framework/thirdparty/Zend/Cache/Frontend/Capture.php 2.39 KB
0084d336   Administrator   Importers CRUD
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  <?php
  /**
   * Zend Framework
   *
   * LICENSE
   *
   * This source file is subject to the new BSD license that is bundled
   * with this package in the file LICENSE.txt.
   * It is also available through the world-wide-web at this URL:
   * http://framework.zend.com/license/new-bsd
   * If you did not receive a copy of the license and are unable to
   * obtain it through the world-wide-web, please send an email
   * to license@zend.com so we can send you a copy immediately.
   *
   * @category   Zend
   * @package    Zend_Cache
   * @subpackage Zend_Cache_Frontend
   * @copyright  Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
   * @license    http://framework.zend.com/license/new-bsd     New BSD License
   * @version    $Id: Capture.php 23775 2011-03-01 17:25:24Z ralph $
   */
  
  
  /**
   * @see Zend_Cache_Core
   */
  require_once 'Zend/Cache/Core.php';
  
  
  /**
   * @package    Zend_Cache
   * @subpackage Zend_Cache_Frontend
   * @copyright  Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
   * @license    http://framework.zend.com/license/new-bsd     New BSD License
   */
  class Zend_Cache_Frontend_Capture extends Zend_Cache_Core
  {
      /**
       * Page identifiers
       * @var array
       */
      protected $_idStack = array();
  
      /**
       * Tags
       * @var array
       */
      protected $_tags = array();
  
      protected $_extension = null;
  
      /**
       * Start the cache
       *
       * @param  string  $id Cache id
       * @return mixed True if the cache is hit (false else) with $echoData=true (default) ; string else (datas)
       */
      public function start($id, array $tags, $extension = null)
      {
          $this->_tags = $tags;
          $this->_extension = $extension;
          ob_start(array($this, '_flush'));
          ob_implicit_flush(false);
          $this->_idStack[] = $id;
          return false;
      }
  
      /**
       * callback for output buffering
       * (shouldn't really be called manually)
       *
       * @param  string $data Buffered output
       * @return string Data to send to browser
       */
      public function _flush($data)
      {
          $id = array_pop($this->_idStack);
          if ($id === null) {
              Zend_Cache::throwException('use of _flush() without a start()');
          }
          if ($this->_extension) {
              $this->save(serialize(array($data, $this->_extension)), $id, $this->_tags);
          } else {
              $this->save($data, $id, $this->_tags);
          }
          return $data;
      }
  }