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<?php
require_once 'PEAR.php';
/**
* VFS API for abstracted creation of ISO (CD-ROM) filesystems.
*
* $Horde: framework/VFS_ISOWriter/ISOWriter.php,v 1.1.8.1 2005/01/03 12:19:21 jan Exp $
*
* Copyright 2004-2005 Cronosys, LLC <http://www.cronosys.com/>
*
* See the enclosed file COPYING for license information (LGPL). If you
* did not receive this file, see http://www.fsf.org/copyleft/lgpl.html.
*
* @author Jason M. Felice <jfelice@cronosys.com>
* @version $Revision: 1.1.8.1 $
* @package VFS_ISO
* @since Horde 3.0
*/
class VFS_ISOWriter {
/**
* A VFS object used for reading the source files
*
* @var object $_sourceVfs
*/
var $_sourceVfs = null;
/**
* A VFS object used for writing the ISO image
*
* @var object $_targetVfs
*/
var $_targetVfs = null;
/**
* Hash containing connection parameters.
*
* @var array $_params
*/
var $_params = array();
/**
* Constructs a new VFS_ISOWriter object
*
* @access public
*
* @param array $params A hash containing parameters.
*/
function VFS_ISOWriter(&$sourceVfs, &$targetVfs, $params)
{
$this->_sourceVfs = &$sourceVfs;
$this->_targetVfs = &$targetVfs;
$this->_params = $params;
}
/**
* Create the ISO image
*
* @abstract
* @access public
*
* @return mixed Null or PEAR_Error on failure.
*/
function process()
{
return PEAR::raiseError(_("Not implemented."));
}
/**
* Attempt to create a concrete VFS_ISOWriter subclass.
*
* This method uses its parameters and checks the system to determine
* the most appropriate subclass to use for building ISO images. If
* none is found, an error is raised.
*
* @access public
*
* @param object &$sourceVfs Reference to the VFS object from which
* the files will be read to create the
* ISO image.
* @param object &$targetVfs Reference to the VFS object to which the
* ISO image will be written.
* @param array $params Hash of parameters for creating the
* image:
* 'sourceRoot' => A directory in the source VFS for
* files to be read from for the image.
* 'targetFile' => Path and filename of the ISO file to
* write into the target VFS.
*
* @return object A newly created concrete VFS_ISOWriter
* subclass, or a PEAR_Error on an error.
*/
function &factory(&$sourceVfs, &$targetVfs, $params)
{
if (empty($params['targetFile'])) {
return PEAR::raiseError(_("Cannot proceed without 'targetFile' parameter."));
}
if (empty($params['sourceRoot'])) {
$params['sourceRoot'] = '/';
}
/* Right now, mkisofs is the only driver, but make sure we can
* support it. */
require_once dirname(__FILE__) . '/ISOWriter/mkisofs.php';
if (VFS_ISOWriter_mkisofs::strategyAvailable()) {
return $ret = &new VFS_ISOWriter_mkisofs($sourceVfs, $targetVfs,
$params);
}
return PEAR::raiseError(_("No available strategy for making ISO images."));
}
}
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