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<?php
/**
* @package Joomla.Platform
* @subpackage Archive
*
* @copyright Copyright (C) 2005 - 2012 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.folder');
/**
* An Archive handling class
*
* @package Joomla.Platform
* @subpackage Archive
* @since 11.1
*/
class JArchive
{
/**
* @var array The array of instantiated archive adapters.
* @since 12.1
*/
protected static $adapters = array();
/**
* Extract an archive file to a directory.
*
* @param string $archivename The name of the archive file
* @param string $extractdir Directory to unpack into
*
* @return boolean True for success
*
* @since 11.1
* @throws InvalidArgumentException
*/
public static function extract($archivename, $extractdir)
{
$untar = false;
$result = false;
$ext = JFile::getExt(strtolower($archivename));
// Check if a tar is embedded...gzip/bzip2 can just be plain files!
if (JFile::getExt(JFile::stripExt(strtolower($archivename))) == 'tar')
{
$untar = true;
}
switch ($ext)
{
case 'zip':
$adapter = self::getAdapter('zip');
if ($adapter)
{
$result = $adapter->extract($archivename, $extractdir);
}
break;
case 'tar':
$adapter = self::getAdapter('tar');
if ($adapter)
{
$result = $adapter->extract($archivename, $extractdir);
}
break;
case 'tgz':
// This format is a tarball gzip'd
$untar = true;
case 'gz':
case 'gzip':
// This may just be an individual file (e.g. sql script)
$adapter = self::getAdapter('gzip');
if ($adapter)
{
$config = JFactory::getConfig();
$tmpfname = $config->get('tmp_path') . '/' . uniqid('gzip');
$gzresult = $adapter->extract($archivename, $tmpfname);
if ($gzresult instanceof Exception)
{
@unlink($tmpfname);
return false;
}
if ($untar)
{
// Try to untar the file
$tadapter = self::getAdapter('tar');
if ($tadapter)
{
$result = $tadapter->extract($tmpfname, $extractdir);
}
}
else
{
$path = JPath::clean($extractdir);
JFolder::create($path);
$result = JFile::copy($tmpfname, $path . '/' . JFile::stripExt(basename(strtolower($archivename))), null, 1);
}
@unlink($tmpfname);
}
break;
case 'tbz2':
// This format is a tarball bzip2'd
$untar = true;
case 'bz2':
case 'bzip2':
// This may just be an individual file (e.g. sql script)
$adapter = self::getAdapter('bzip2');
if ($adapter)
{
$config = JFactory::getConfig();
$tmpfname = $config->get('tmp_path') . '/' . uniqid('bzip2');
$bzresult = $adapter->extract($archivename, $tmpfname);
if ($bzresult instanceof Exception)
{
@unlink($tmpfname);
return false;
}
if ($untar)
{
// Try to untar the file
$tadapter = self::getAdapter('tar');
if ($tadapter)
{
$result = $tadapter->extract($tmpfname, $extractdir);
}
}
else
{
$path = JPath::clean($extractdir);
JFolder::create($path);
$result = JFile::copy($tmpfname, $path . '/' . JFile::stripExt(basename(strtolower($archivename))), null, 1);
}
@unlink($tmpfname);
}
break;
default:
throw new InvalidArgumentException('Unknown Archive Type');
}
if (!$result || $result instanceof Exception)
{
return false;
}
return true;
}
/**
* Get a file compression adapter.
*
* @param string $type The type of adapter (bzip2|gzip|tar|zip).
*
* @return JArchiveExtractable Adapter for the requested type
*
* @since 11.1
* @throws UnexpectedValueException
*/
public static function getAdapter($type)
{
if (!isset(self::$adapters[$type]))
{
// Try to load the adapter object
$class = 'JArchive' . ucfirst($type);
if (!class_exists($class))
{
throw new UnexpectedValueException('Unable to load archive', 500);
}
self::$adapters[$type] = new $class;
}
return self::$adapters[$type];
}
}
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