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<?php
/**
* Encapsulate strategies for ability to write output to real file.
*
* $Horde: framework/VFS_ISOWriter/ISOWriter/RealOutputStrategy.php,v 1.1.8.7 2006/01/01 21:28:43 jan Exp $
*
* Copyright 2004-2006 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>
* @package VFS_ISO
* @since Horde 3.0
*/
class VFS_ISOWriter_RealOutputStrategy {
/**
* The VFS to which we will write the file.
*
* @var VFS
*/
var $_targetVfs;
/**
* Where to store the file in the VFS.
*
* @var string
*/
var $_targetFile;
/**
* Constructor
*
* @param object &$targetVfs The VFS to which we will write the
* file.
* @param string $targetFile The path and name of file to write.
*/
function VFS_ISOWriter_RealOutputStrategy(&$targetVfs, $targetFile)
{
$this->_targetVfs = &$targetVfs;
$this->_targetFile = $targetFile;
}
/**
* Select and create a concrete strategy for using a real output file.
*
* @param object &$targetVfs The VFS to which we will write the
* result.
* @param string $targetFile The path and filename of the target
* file within the VFS.
* @return object A concrete output strategy object or PEAR_Error on
* failure.
*/
function &factory(&$targetVfs, $targetFile)
{
if (strtolower(get_class($targetVfs)) == 'vfs_file') {
$method = 'direct';
} else {
$method = 'copy';
}
include_once dirname(__FILE__) . '/RealOutputStrategy/' . $method .
'.php';
$class = 'VFS_ISOWriter_RealOutputStrategy_' . $method;
if (!class_exists($class)) {
return PEAR::raiseError(sprintf(_("Could not load strategy \"%s\"."),
$method));
}
$strategy = &new $class($targetVfs, $targetFile);
return $strategy;
}
/**
* Get a real filesystem filename we can write to.
*
* @abstract
* @return string The filename or PEAR_Error on failure.
*/
function getRealFilename()
{
return PEAR::raiseError(_("Not implemented."));
}
/**
* Indicate that we're done writing to the real file.
*
* @abstract
* @return mixed Null or PEAR_Error on failure.
*/
function finished()
{
return PEAR::raiseError(_("Not implemented."));
}
}
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