/* * 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.FileNotFoundException;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);    }  }}