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 org.apache.oro.text.perl.Perl5Util; 21 22 public class ControlFilter implements Filter { 23 24 Perl5Util util = new Perl5Util(); 25 26 String[] allowedPatterns; 27 28 public ControlFilter(String[] allowedPatterns) { 29 this.allowedPatterns = allowedPatterns; 30 } 31 32 public 33 String filter(String in) throws UnexpectedFormatException{ 34 int len = allowedPatterns.length; 35 for(int i = 0; i < len; i++) { 36 //System.out.println("["+allowedPatterns[i]+"]"); 37 if(util.match("/"+allowedPatterns[i]+"/", in)) { 38 //System.out.println("["+in+"] matched ["+allowedPatterns[i]); 39 return in; 40 } 41 } 42 43 throw new UnexpectedFormatException("["+in+"]"); 44 } 45 }