1 /**
2 *
3 * Copyright 2003-2004 The Apache Software Foundation
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 package org.apache.geronimo.system.logging.log4j;
19
20 import org.apache.log4j.helpers.PatternConverter;
21
22 /**
23 * A simple extension of the log4j pattern parser which adds support for the
24 * 'a' letter for a NamedNDC.
25 *
26 * @version $Rev: 355877 $ $Date: 2005-12-10 18:48:27 -0800 (Sat, 10 Dec 2005) $
27 */
28 public class PatternParser
29 extends org.apache.log4j.helpers.PatternParser {
30 public PatternParser(String pattern) {
31 super(pattern);
32 }
33
34 protected void finalizeConverter(char c) {
35 PatternConverter pc = null;
36 switch (c) {
37 case 'a':
38 String key = extractOption();
39 pc = new NamedNDCConverter(formattingInfo, key);
40 currentLiteral.setLength(0);
41 break;
42 default:
43 super.finalizeConverter(c);
44 return;
45 }
46 addConverter(pc);
47 }
48 }