/*
* 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 org.radeox.filter.context.FilterContext;
import org.radeox.filter.regex.LocaleRegexTokenFilter;
import org.radeox.regex.MatchResult;
import org.radeox.util.Encoder;
/*
* Transforms multiple \ into single backspaces and escapes other characters.
* @author leo @team other
*
* @version $Id: EscapeFilter.java 13117 2006-07-31 18:06:11Z andrew@caret.cam.ac.uk $
*/
public class EscapeFilter extends LocaleRegexTokenFilter implements CacheFilter
{
protected String getLocaleKey()
{
return "filter.escape";
}
public void handleMatch(StringBuffer buffer, MatchResult result,
FilterContext context)
{
buffer.append(handleMatch(result, context));
}
public String handleMatch(MatchResult result, FilterContext context)
{
if (result.group(1) != null) {
return "\";
} else if (result.group(4) != null ) {
return "\n";
} else {
String match = result.group(2);
if (match == null)
{
match = result.group(3);
}
if ("\\".equals(match))
{
return "\\\\";
}
return Encoder.toEntity(match.charAt(0));
}
}
public String[] before()
{
// return new String[]{ "BoldFilter.class", "BoingFilter.class" };
return FilterPipe.FIRST_BEFORE;
}
}