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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_Filter
  * @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    $Id$
  */
 
 /**
  * @see Zend_Filter_Compress_CompressAbstract
  */
 // require_once 'Zend/Filter/Compress/CompressAbstract.php';
 
 /**
  * Compression adapter for Bz2
  *
  * @category   Zend
  * @package    Zend_Filter
  * @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_Filter_Compress_Bz2 extends Zend_Filter_Compress_CompressAbstract
 {
     /**
      * Compression Options
      * array(
      *     'blocksize' => Blocksize to use from 0-9
      *     'archive'   => Archive to use
      * )
      *
      * @var array
      */
     protected $_options = array(
         'blocksize' => 4,
         'archive'   => null,
     );
 
     /**
      * Class constructor
      *
      * @param array|Zend_Config $options (Optional) Options to set
      */
     public function __construct($options = null)
     {
         if (!extension_loaded('bz2')) {
             // require_once 'Zend/Filter/Exception.php';
             throw new Zend_Filter_Exception('This filter needs the bz2 extension');
         }
         parent::__construct($options);
     }
 
     /**
      * Returns the set blocksize
      *
      * @return integer
      */
     public function getBlocksize()
     {
         return $this->_options['blocksize'];
     }
 
     /**
      * Sets a new blocksize
      *
      * @param integer $level
      * @return Zend_Filter_Compress_Bz2
      */
     public function setBlocksize($blocksize)
     {
         if (($blocksize < 0) || ($blocksize > 9)) {
             // require_once 'Zend/Filter/Exception.php';
             throw new Zend_Filter_Exception('Blocksize must be between 0 and 9');
         }
 
         $this->_options['blocksize'] = (int) $blocksize;
         return $this;
     }
 
     /**
      * Returns the set archive
      *
      * @return string
      */
     public function getArchive()
     {
         return $this->_options['archive'];
     }
 
     /**
      * Sets the archive to use for de-/compression
      *
      * @param string $archive Archive to use
      * @return Zend_Filter_Compress_Bz2
      */
     public function setArchive($archive)
     {
         $this->_options['archive'] = (string) $archive;
         return $this;
     }
 
     /**
      * Compresses the given content
      *
      * @param  string $content
      * @return string
      */
     public function compress($content)
     {
         $archive = $this->getArchive();
         if (!empty($archive)) {
             $file = bzopen($archive, 'w');
             if (!$file) {
                 // require_once 'Zend/Filter/Exception.php';
                 throw new Zend_Filter_Exception("Error opening the archive '" . $archive . "'");
             }
 
             bzwrite($file, $content);
             bzclose($file);
             $compressed = true;
         } else {
             $compressed = bzcompress($content, $this->getBlocksize());
         }
 
         if (is_int($compressed)) {
             // require_once 'Zend/Filter/Exception.php';
             throw new Zend_Filter_Exception('Error during compression');
         }
 
         return $compressed;
     }
 
     /**
      * Decompresses the given content
      *
      * @param  string $content
      * @return string
      */
     public function decompress($content)
     {
         $archive = $this->getArchive();
         if (@file_exists($content)) {
             $archive = $content;
         }
 
         if (@file_exists($archive)) {
             $file = bzopen($archive, 'r');
             if (!$file) {
                 // require_once 'Zend/Filter/Exception.php';
                 throw new Zend_Filter_Exception("Error opening the archive '" . $content . "'");
             }
 
             $compressed = bzread($file);
             bzclose($file);
         } else {
             $compressed = bzdecompress($content);
         }
 
         if (is_int($compressed)) {
             // require_once 'Zend/Filter/Exception.php';
             throw new Zend_Filter_Exception('Error during decompression');
         }
 
         return $compressed;
     }
 
     /**
      * Returns the adapter name
      *
      * @return string
      */
     public function toString()
     {
         return 'Bz2';
     }
 }