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File: WebDavRewriteHelper.class
<?php
/*
 * Gallery - a web based photo album viewer and editor
 * Copyright (C) 2000-2007 Bharat Mediratta
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or (at
 * your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA  02110-1301, USA.
 */

/**
 * A WebDAV helper class for generating short URLs without query strings.
 * @package WebDav
 * @subpackage Classes
 * @author Jack Bates <ms419@freezone.co.uk>
 * @version $Revision: 15513 $
 * @static
 */
class WebDavRewriteHelper {

    /**
     * Hacked version of RewriteSimpleHelper::parserPath to support either 'path' or 'itemId' and
     * empty path or '/' for short URL to the root album.  Uses rawurlencode instead of urlencode to
     * encode ' ' as '%20', instead of '+'.
     * @see RewriteSimpleHelper::parsePath
     */
    function parsePath(&$url, &$params, &$entity) {
	global $gallery;

	if (isset($params['itemId'])) {
	    if (!isset($entity)) {
		$urlGenerator =& $gallery->getUrlGenerator();
		$entity = $urlGenerator->loadEntity($params['itemId']);
	    }

	    if (!GalleryUtilities::isA($entity, 'GalleryFileSystemEntity')) {
		return;
	    }

	    list ($ret, $params['path']) = $entity->fetchLogicalPath();
	    if ($ret) {
		return;
	    }

	    unset($params['itemId']);
	}

	if (empty($params['path'])) {
	    $params['path'] = '';
	} else {
	    $params['path'] = ltrim($params['path'], '/');

	    /* rawurlencode except for path separators */
	    $params['path'] = str_replace('%2F', '/', rawurlencode($params['path']));
	}

	/*
	 * We add in a leading slash to the path because the rule is designed not to have
	 * one, so that it can trigger on gallery2/w/ and gallery2/w (Windows XP will
	 * PROPFIND the path without the trailing slash
	 */
	$url = str_replace('%path%', '/' . $params['path'], $url);
	unset($params['path']);

	return true;
    }
}
?>