01: /*
02: * This file is part of "SnipSnap Radeox Rendering Engine".
03: *
04: * Copyright (c) 2002 Stephan J. Schmidt, Matthias L. Jugel
05: * All Rights Reserved.
06: *
07: * Please visit http://radeox.org/ for updates and contact.
08: *
09: * --LICENSE NOTICE--
10: * Licensed under the Apache License, Version 2.0 (the "License");
11: * you may not use this file except in compliance with the License.
12: * You may obtain a copy of the License at
13: *
14: * http://www.apache.org/licenses/LICENSE-2.0
15: *
16: * Unless required by applicable law or agreed to in writing, software
17: * distributed under the License is distributed on an "AS IS" BASIS,
18: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
19: * See the License for the specific language governing permissions and
20: * limitations under the License.
21: * --LICENSE NOTICE--
22: */
23:
24: package examples;
25:
26: import org.radeox.filter.regex.RegexTokenFilter;
27: import org.radeox.regex.MatchResult;
28: import org.radeox.filter.context.FilterContext;
29:
30: // cut:start-1
31: public class SquareFilter extends RegexTokenFilter {
32: public SquareFilter() {
33: super ("\\$[0-9]+", true);
34: };
35:
36: public void handleMatch(StringBuffer buffer, MatchResult result,
37: FilterContext context) {
38: // group(0) will e.g. return "$3" so we have to cut the $
39: int number = Integer.parseInt(result.group(0).substring(1));
40: buffer.append(number * number);
41: }
42: }
43: // cut:end-1
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