/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements.  See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License.  You may obtain a copy of the License at *  *      http://www.apache.org/licenses/LICENSE-2.0 *  * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */package org.apache.log4j.util;import org.apache.oro.text.perl.Perl5Util;public class XMLTimestampFilter implements Filter {  Perl5Util util = new Perl5Util();  public   String filter(String in) {    if(util.match("/timestamp=\"\\d{10,13}\"/", in)) {      return util.substitute("s/timestamp=\"\\d{10,13}\"/timestamp=\"XXX\"/", in);    } else {      return in;    }  }}