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Java > Open Source Codes > org > apache > geronimo > system > logging > log4j > PatternParser


1 /**
2  * Licensed to the Apache Software Foundation (ASF) under one or more
3  * contributor license agreements. See the NOTICE file distributed with
4  * this work for additional information regarding copyright ownership.
5  * The ASF licenses this file to You under the Apache License, Version 2.0
6  * (the "License"); you may not use this file except in compliance with
7  * the License. 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: 476049 $ $Date: 2006-11-16 23:35:17 -0500 (Thu, 16 Nov 2006) $
27  */
28 public class PatternParser
29         extends org.apache.log4j.helpers.PatternParser {
30     public PatternParser(String JavaDoc pattern) {
31         super(pattern);
32     }
33
34     protected void finalizeConverter(char c) {
35         PatternConverter pc = null;
36         switch (c) {
37             case 'a':
38                 String JavaDoc 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 }
49
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