/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source 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.
*
* Resin Open Source 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, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.rewrite;
import com.caucho.server.rewrite.MatchFilterChain;
import java.util.ArrayList;
import java.util.regex.Pattern;
import java.util.regex.Matcher;
import javax.servlet.DispatcherType;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
abstract public class AbstractRegexpDispatchRule extends AbstractDispatchRule
{
private Pattern _regexp;
private ArrayList<RewriteFilter> _filterList
= new ArrayList<RewriteFilter>();
private RewriteFilter []_filters = new RewriteFilter[0];
private ArrayList<RequestPredicate> _predicateList
= new ArrayList<RequestPredicate>();
private RequestPredicate []_predicates = new RequestPredicate[0];
public void setRegexp(Pattern regexp)
{
_regexp = regexp;
}
public Pattern getRegexp()
{
return _regexp;
}
@Override
public boolean isRequest()
{
return true;
}
@Override
public boolean isInclude()
{
return false;
}
@Override
public boolean isForward()
{
return false;
}
public boolean isFilter()
{
return false;
}
public void add(RequestPredicate predicate)
{
_predicateList.add(predicate);
_predicates = new RequestPredicate[_predicateList.size()];
_predicateList.toArray(_predicates);
}
public void add(RewriteFilter filter)
{
_filterList.add(filter);
_filters = new RewriteFilter[_filterList.size()];
_filterList.toArray(_filters);
}
public void add(Filter filter)
throws ServletException
{
add(new RewriteFilterAdapter(filter));
}
@Override
public String rewriteUri(String uri, String queryString)
{
return uri;
}
@Override
public FilterChain map(DispatcherType type,
String uri,
String queryString,
FilterChain next,
FilterChain tail)
throws ServletException
{
Matcher matcher = null;
if (_regexp == null || (matcher = _regexp.matcher(uri)).find()) {
String target = rewriteTarget(matcher, uri, queryString);
FilterChain chain = createDispatch(type, uri, queryString, target, tail);
for (int i = _filters.length - 1; i >= 0; i--) {
chain = _filters[i].map(uri, queryString, chain);
}
if (_predicates.length > 0)
chain = new MatchFilterChain(_predicates, chain, next);
return chain;
}
else
return next;
}
protected FilterChain createDispatch(DispatcherType type,
String uri,
String queryString,
String target,
FilterChain next)
{
return next;
}
protected String rewriteTarget(Matcher matcher,
String uri,
String queryString)
{
if (queryString == null)
return uri;
else if (uri.indexOf('?') >= 0)
return uri + "&" + queryString;
else
return uri + "?" + queryString;
}
@Override
public String toString()
{
return getClass().getSimpleName() + "[regexp=" + _regexp + "]";
}
}