001/** 002 * Logback: the reliable, generic, fast and flexible logging framework. 003 * Copyright (C) 1999-2015, QOS.ch. All rights reserved. 004 * 005 * This program and the accompanying materials are dual-licensed under 006 * either the terms of the Eclipse Public License v1.0 as published by 007 * the Eclipse Foundation 008 * 009 * or (per the licensee's choosing) 010 * 011 * under the terms of the GNU Lesser General Public License version 2.1 012 * as published by the Free Software Foundation. 013 */ 014package ch.qos.logback.core.pattern; 015 016import java.util.List; 017import java.util.regex.Pattern; 018 019public class ReplacingCompositeConverter<E> extends CompositeConverter<E> { 020 021 Pattern pattern; 022 String regex; 023 String replacement; 024 025 public void start() { 026 final List<String> optionList = getOptionList(); 027 if (optionList == null) { 028 addError("at least two options are expected whereas you have declared none"); 029 return; 030 } 031 032 int numOpts = optionList.size(); 033 034 if (numOpts < 2) { 035 addError("at least two options are expected whereas you have declared only " + numOpts + "as [" + optionList 036 + "]"); 037 return; 038 } 039 regex = optionList.get(0); 040 pattern = Pattern.compile(regex); 041 replacement = optionList.get(1); 042 super.start(); 043 } 044 045 @Override 046 protected String transform(E event, String in) { 047 if (!started) 048 return in; 049 return pattern.matcher(in).replaceAll(replacement); 050 } 051}