/*
* This file is part of "SnipSnap Radeox Rendering Engine".
*
* Copyright (c) 2002 Stephan J. Schmidt, Matthias L. Jugel
* All Rights Reserved.
*
* Please visit http://radeox.org/ for updates and contact.
*
* --LICENSE NOTICE--
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* --LICENSE NOTICE--
*/
package org.radeox.filter;
import java.text.MessageFormat;
import org.radeox.api.engine.ImageRenderEngine;
import org.radeox.api.engine.RenderEngine;
import org.radeox.api.engine.context.InitialRenderContext;
import org.radeox.filter.context.FilterContext;
import org.radeox.filter.regex.LocaleRegexTokenFilter;
import org.radeox.regex.MatchResult;
import org.radeox.util.Encoder;
/*
* UrlFilter finds http:// style URLs in its input and transforms this to <a
* href="url">url</a> @author stephan @team sonicteam
*
* @version $Id: UrlFilter.java 20961 2007-02-02 18:44:27Z ian@caret.cam.ac.uk $
*/
public class UrlFilter extends LocaleRegexTokenFilter implements CacheFilter
{
private MessageFormat formatter;
protected String getLocaleKey()
{
return "filter.url";
}
public void setInitialContext(InitialRenderContext context)
{
super.setInitialContext(context);
String outputTemplate = outputMessages.getString(getLocaleKey()
+ ".print");
formatter = new MessageFormat("");
formatter.applyPattern(outputTemplate);
}
public void handleMatch(StringBuffer buffer, MatchResult result,
FilterContext context)
{
buffer.append(result.group(1));
// Does our engine know images?
RenderEngine engine = context.getRenderContext().getRenderEngine();
String externalImage = "";
if (engine instanceof ImageRenderEngine)
{
buffer.append(((ImageRenderEngine) engine).getExternalImageLink());
}
buffer.append(formatter.format(new Object[] {
externalImage,
result.group(2),
Encoder.toEntity(result.group(2).charAt(0))
+ result.group(2).substring(1) }));
return;
}
}