File indexing completed on 2024-05-12 06:02:54

 <?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    $Id$
  */
 
 
 /**
  * PDF file trailer
  *
  * @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
  */
 abstract class Zend_Pdf_Trailer
 {
     private static $_allowedKeys = array('Size', 'Prev', 'Root', 'Encrypt', 'Info', 'ID', 'Index', 'W', 'XRefStm', 'DocChecksum');
 
     /**
      * Trailer dictionary.
      *
      * @var Zend_Pdf_Element_Dictionary
      */
     private $_dict;
 
     /**
      * Check if key is correct
      *
      * @param string $key
      * @throws Zend_Pdf_Exception
      */
     private function _checkDictKey($key)
     {
         if ( !in_array($key, self::$_allowedKeys) ) {
             /** @todo Make warning (log entry) instead of an exception */
             // require_once 'Zend/Pdf/Exception.php';
             throw new Zend_Pdf_Exception("Unknown trailer dictionary key: '$key'.");
         }
     }
 
 
     /**
      * Object constructor
      *
      * @param Zend_Pdf_Element_Dictionary $dict
      */
     public function __construct(Zend_Pdf_Element_Dictionary $dict)
     {
         $this->_dict   = $dict;
 
         foreach ($this->_dict->getKeys() as $dictKey) {
             $this->_checkDictKey($dictKey);
         }
     }
 
     /**
      * Get handler
      *
      * @param string $property
      * @return mixed
      */
     public function __get($property)
     {
         return $this->_dict->$property;
     }
 
     /**
      * Set handler
      *
      * @param string $property
      * @param  mixed $value
      */
     public function __set($property, $value)
     {
         $this->_checkDictKey($property);
         $this->_dict->$property = $value;
     }
 
     /**
      * Return string trailer representation
      *
      * @return string
      */
     public function toString()
     {
         return "trailer\n" . $this->_dict->toString() . "\n";
     }
 
 
     /**
      * Get length of source PDF
      *
      * @return string
      */
     abstract public function getPDFLength();
 
     /**
      * Get PDF String
      *
      * @return string
      */
     abstract public function getPDFString();
 
     /**
      * Get header of free objects list
      * Returns object number of last free object
      *
      * @return integer
      */
     abstract public function getLastFreeObject();
 }