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.Pattern; 21 22 23 public class EnhancedLineNumberFilter implements Filter { 24 private Pattern linePattern; 25 private Pattern nativePattern; 26 27 public EnhancedLineNumberFilter() { 28 linePattern = Pattern.compile("\\(.*:\\d{1,4}\\)"); 29 nativePattern = Pattern.compile("\\(Native Method\\)"); 30 } 31 32 public String filter(final String in) { 33 34 if (linePattern.matcher(in).find()) { 35 return linePattern.matcher(in).replaceAll("(X)"); 36 } else if (nativePattern.matcher(in).find()) { 37 return nativePattern.matcher(in).replaceAll("(X)"); 38 } else { 39 return in; 40 } 41 } 42 }