View Javadoc

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.log4j.util;
19  
20  import java.util.regex.Matcher;
21  import java.util.regex.Pattern;
22  
23  
24  public class XMLTimestampFilter implements Filter {
25  
26    public String filter(String in) {
27      if(in == null) {
28        return null;
29      }
30      Pattern pattern = Pattern.compile("timestamp=\"//d{10,13}\"");
31      Matcher matcher = pattern.matcher(in);
32      if (matcher.find()) {
33          return matcher.replaceAll("timestamp=\"XXX\"");
34      } else {
35        return in;
36      }
37    }
38  }