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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
*/
/**
* 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')) {
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)) {
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) {
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)) {
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) {
throw new Zend_Filter_Exception("Error opening the archive '" . $content . "'");
}
$compressed = bzread($file);
bzclose($file);
} else {
$compressed = bzdecompress($content);
}
if (is_int($compressed)) {
throw new Zend_Filter_Exception('Error during decompression');
}
return $compressed;
}
/**
* Returns the adapter name
*
* @return string
*/
public function toString()
{
return 'Bz2';
}
}
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