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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    $Id$
  */
 
 
 /** Zend_Pdf_Filter_Compression */
 // require_once 'Zend/Pdf/Filter/Compression.php';
 
 /**
  * Flate stream filter
  *
  * @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_Filter_Compression_Flate extends Zend_Pdf_Filter_Compression
 {
     /**
      * Encode data
      *
      * @param string $data
      * @param array $params
      * @return string
      * @throws Zend_Pdf_Exception
      */
     public static function encode($data, $params = null)
     {
         if ($params != null) {
             $data = self::_applyEncodeParams($data, $params);
         }
 
         if (extension_loaded('zlib')) {
             $trackErrors = ini_get( "track_errors");
             ini_set('track_errors', '1');
 
             if (($output = @gzcompress($data)) === false) {
                 ini_set('track_errors', $trackErrors);
                 // require_once 'Zend/Pdf/Exception.php';
                 throw new Zend_Pdf_Exception($php_errormsg);
             }
 
             ini_set('track_errors', $trackErrors);
         } else {
             // require_once 'Zend/Pdf/Exception.php';
             throw new Zend_Pdf_Exception('Not implemented yet. You have to use zlib extension.');
         }
 
         return $output;
     }
 
     /**
      * Decode data
      *
      * @param string $data
      * @param array $params
      * @return string
      * @throws Zend_Pdf_Exception
      */
     public static function decode($data, $params = null)
     {
         global $php_errormsg;
 
         if (extension_loaded('zlib')) {
             $trackErrors = ini_get( "track_errors");
             ini_set('track_errors', '1');
 
             if (($output = @gzuncompress($data)) === false) {
                 ini_set('track_errors', $trackErrors);
                 // require_once 'Zend/Pdf/Exception.php';
                 throw new Zend_Pdf_Exception($php_errormsg);
             }
 
             ini_set('track_errors', $trackErrors);
         } else {
             // require_once 'Zend/Pdf/Exception.php';
             throw new Zend_Pdf_Exception('Not implemented yet');
         }
 
         if ($params !== null) {
             return self::_applyDecodeParams($output, $params);
         } else {
             return $output;
         }
     }
 }