/*==========================================================================*\
| $Id: RegexGroupRequestFilter.java,v 1.1 2011/05/13 19:46:57 aallowat Exp $
|*-------------------------------------------------------------------------*|
| Copyright (C) 2011 Virginia Tech
|
| This file is part of Web-CAT.
|
| Web-CAT is free software; you can redistribute it and/or modify
| it under the terms of the GNU Affero General Public License as published
| by the Free Software Foundation; either version 3 of the License, or
| (at your option) any later version.
|
| Web-CAT 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 Affero General Public License
| along with Web-CAT; if not, see <http://www.gnu.org/licenses/>.
\*==========================================================================*/
package org.webcat.core.http;
import java.util.regex.Matcher;
import com.webobjects.appserver.WODynamicURL;
import com.webobjects.appserver.WORequest;
import com.webobjects.appserver.WOResponse;
public class RegexGroupRequestFilter implements RequestFilter
{
//~ Constructors ..........................................................
// ----------------------------------------------------------
public RegexGroupRequestFilter(int groupIndex)
{
this.groupIndex = groupIndex;
}
//~ Methods ...............................................................
// ----------------------------------------------------------
public void filterRequest(WORequest request, WOResponse response,
RequestFilterChain filterChain) throws Exception
{
Matcher matcher = (Matcher) request.userInfoForKey(
RegexPipeline.REGEX_MATCHER);
WODynamicURL url = request._uriDecomposed();
String oldPath = (String) request.userInfoForKey(
RegexPipeline.REGEX_TEXT);
int start = matcher.start(groupIndex);
String newPath = matcher.group(groupIndex);
Object oldFilterPath = request.userInfoForKey(
MetaRequestHandler.REGEX_FILTER_PATH_KEY);
try
{
url.setRequestHandlerPath(newPath);
request.setUserInfoForKey(oldPath.substring(0, start),
MetaRequestHandler.REGEX_FILTER_PATH_KEY);
filterChain.filterRequest(request, response);
}
finally
{
request.setUserInfoForKey(oldFilterPath,
MetaRequestHandler.REGEX_FILTER_PATH_KEY);
url.setRequestHandlerPath(oldPath);
}
}
//~ Static/instance variables .............................................
private int groupIndex;
}