/* * 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 java.io.BufferedReader; import java.io.FileOutputStream; import java.io.FileReader; import java.io.IOException; import java.io.PrintStream; public class Transformer { public static void transform(String in, String out, Filter[] filters) throws IOException, UnexpectedFormatException { String line; BufferedReader input = new BufferedReader(new FileReader(in)); PrintStream output = new PrintStream(new FileOutputStream(out, false)); // Initialization of input and output omitted while((line = input.readLine()) != null) { // apply all filters for(int i = 0; i < filters.length; i++) { line = filters[i].filter(line); } if(line != null) { output.println(line); } } } public static void transform(String in, String out, Filter filter) throws IOException, UnexpectedFormatException { String line; BufferedReader input = new BufferedReader(new FileReader(in)); PrintStream output = new PrintStream(new FileOutputStream(out)); // Initialization of input and output omitted while((line = input.readLine()) != null) { line = filter.filter(line); output.println(line); } } }