File indexing completed on 2024-12-22 05:36:56

 <?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    $Id$
  */
 
 
 /** Zend_Pdf_Trailer */
 // require_once 'Zend/Pdf/Trailer.php';
 
 /**
  * PDF file trailer.
  * Stores and provides access to the trailer parced from a PDF file
  *
  * @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_Trailer_Keeper extends Zend_Pdf_Trailer
 {
     /**
      * Reference context
      *
      * @var Zend_Pdf_Element_Reference_Context
      */
     private $_context;
 
     /**
      * Previous trailer
      *
      * @var Zend_Pdf_Trailer
      */
     private $_prev;
 
 
     /**
      * Object constructor
      *
      * @param Zend_Pdf_Element_Dictionary $dict
      * @param Zend_Pdf_Element_Reference_Context $context
      * @param Zend_Pdf_Trailer $prev
      */
     public function __construct(Zend_Pdf_Element_Dictionary $dict,
                                 Zend_Pdf_Element_Reference_Context $context,
                                 Zend_Pdf_Trailer $prev = null)
     {
         parent::__construct($dict);
 
         $this->_context = $context;
         $this->_prev    = $prev;
     }
 
     /**
      * Setter for $this->_prev
      *
      * @param Zend_Pdf_Trailer_Keeper $prev
      */
     public function setPrev(Zend_Pdf_Trailer_Keeper $prev)
     {
         $this->_prev = $prev;
     }
 
     /**
      * Getter for $this->_prev
      *
      * @return Zend_Pdf_Trailer
      */
     public function getPrev()
     {
         return $this->_prev;
     }
 
     /**
      * Get length of source PDF
      *
      * @return string
      */
     public function getPDFLength()
     {
         return $this->_context->getParser()->getLength();
     }
 
     /**
      * Get PDF String
      *
      * @return string
      */
     public function getPDFString()
     {
         return $this->_context->getParser()->getString();
     }
 
     /**
      * Get reference table, which corresponds to the trailer.
      * Proxy to the $_context member methad call
      *
      * @return Zend_Pdf_Element_Reference_Context
      */
     public function getRefTable()
     {
         return $this->_context->getRefTable();
     }
 
     /**
      * Get header of free objects list
      * Returns object number of last free object
      *
      * @throws Zend_Pdf_Exception
      * @return integer
      */
     public function getLastFreeObject()
     {
         try {
             $this->_context->getRefTable()->getNextFree('0 65535 R');
         } catch (Zend_Pdf_Exception $e) {
             if ($e->getMessage() == 'Object not found.') {
                 /**
                  * Here is work around for some wrong generated PDFs.
                  * We have not found reference to the header of free object list,
                  * thus we treat it as there are no free objects.
                  */
                 return 0;
             }
 
             throw new Zend_Pdf_Exception($e->getMessage(), $e->getCode(), $e);
         }
     }
 }