bzip2.php
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<?php
/**
* @package Joomla.Platform
* @subpackage Archive
*
* @copyright Copyright (C) 2005 - 2019 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
defined('JPATH_PLATFORM') or die;
jimport('joomla.filesystem.file');
jimport('joomla.filesystem.stream');
/**
* Bzip2 format adapter for the JArchive class
*
* @since 1.5
* @deprecated 4.0 use the Joomla\Archive\Bzip2 class instead
*/
class JArchiveBzip2 implements JArchiveExtractable
{
/**
* Bzip2 file data buffer
*
* @var string
* @since 1.5
*/
private $_data = null;
/**
* Extract a Bzip2 compressed file to a given path
*
* @param string $archive Path to Bzip2 archive to extract
* @param string $destination Path to extract archive to
* @param array $options Extraction options [unused]
*
* @return boolean True if successful
*
* @since 1.5
* @throws RuntimeException
*/
public function extract($archive, $destination, array $options = array())
{
$this->_data = null;
if (!extension_loaded('bz2'))
{
$this->raiseWarning(100, 'The bz2 extension is not available.');
}
if (isset($options['use_streams']) && $options['use_streams'] != false)
{
return $this->extractStream($archive, $destination, $options);
}
// Old style: read the whole file and then parse it
$this->_data = file_get_contents($archive);
if (!$this->_data)
{
return $this->raiseWarning(100, 'Unable to read archive');
}
$buffer = bzdecompress($this->_data);
unset($this->_data);
if (empty($buffer))
{
return $this->raiseWarning(100, 'Unable to decompress data');
}
if (JFile::write($destination, $buffer) === false)
{
return $this->raiseWarning(100, 'Unable to write archive');
}
return true;
}
/**
* Method to extract archive using stream objects
*
* @param string $archive Path to Bzip2 archive to extract
* @param string $destination Path to extract archive to
* @param array $options Extraction options [unused]
*
* @return boolean True if successful
*
* @since 3.6.0
*/
protected function extractStream($archive, $destination, $options = array())
{
// New style! streams!
$input = JFactory::getStream();
// Use bzip
$input->set('processingmethod', 'bz');
if (!$input->open($archive))
{
return $this->raiseWarning(100, 'Unable to read archive (bz2)');
}
$output = JFactory::getStream();
if (!$output->open($destination, 'w'))
{
$input->close();
return $this->raiseWarning(100, 'Unable to write archive (bz2)');
}
do
{
$this->_data = $input->read($input->get('chunksize', 8196));
if ($this->_data && !$output->write($this->_data))
{
$input->close();
return $this->raiseWarning(100, 'Unable to write archive (bz2)');
}
}
while ($this->_data);
$output->close();
$input->close();
return true;
}
/**
* Temporary private method to isolate JError from the extract method
* This code should be removed when JError is removed.
*
* @param int $code The application-internal error code for this error
* @param string $msg The error message, which may also be shown the user if need be.
*
* @return JException JException instance if JError class exists
*
* @since 3.6.0
* @throws RuntimeException if JError class does not exist
*/
private function raiseWarning($code, $msg)
{
if (class_exists('JError'))
{
return JError::raiseWarning($code, $msg);
}
throw new RuntimeException($msg);
}
/**
* Tests whether this adapter can unpack files on this computer.
*
* @return boolean True if supported
*
* @since 2.5.0
*/
public static function isSupported()
{
return extension_loaded('bz2');
}
}