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    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 20:35:17 -0800 (Thu, 16 Nov 2006) $
   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   }

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