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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_Pdf
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  * @version    $Id:
  */
 
 /** Internally used classes */
 // require_once 'Zend/Pdf/Element.php';
 // require_once 'Zend/Pdf/Element/Array.php';
 // require_once 'Zend/Pdf/Element/String/Binary.php';
 // require_once 'Zend/Pdf/Element/Boolean.php';
 // require_once 'Zend/Pdf/Element/Dictionary.php';
 // require_once 'Zend/Pdf/Element/Name.php';
 // require_once 'Zend/Pdf/Element/Null.php';
 // require_once 'Zend/Pdf/Element/Numeric.php';
 // require_once 'Zend/Pdf/Element/String.php';
 
 
 /**
  * Resource extractor class is used to detach resources from original PDF document.
  *
  * It provides resources sharing, so different pages or other PDF resources can share
  * its dependent resources (e.g. fonts or images) or other resources still use them without duplication.
  * It also reduces output PDF size, required memory for PDF processing and
  * processing time.
  *
  * The same extractor may be used for different source documents, several
  * extractors may be used for constracting one target document, but extractor
  * must not be shared between target documents.
  *
  * @package    Zend_Pdf
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 class Zend_Pdf_Resource_Extractor
 {
     /**
      * PDF objects factory.
      *
      * @var Zend_Pdf_ElementFactory_Interface
      */
     protected $_factory;
 
     /**
      * Reusable list of already processed objects
      *
      * @var array
      */
     protected $_processed;
 
     /**
      * Object constructor.
      */
     public function __construct()
     {
         $this->_factory   = Zend_Pdf_ElementFactory::createFactory(1);
         $this->_processed = array();
     }
 
     /**
      * Clone page, extract it and dependent objects from the current document,
      * so it can be used within other docs
      *
      * return Zend_Pdf_Page
      */
     public function clonePage(Zend_Pdf_Page $page)
     {
         return $page->clonePage($this->_factory, $this->_processed);
     }
 }