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.io.BufferedReader;
21 import java.io.FileOutputStream;
22 import java.io.FileReader;
23 import java.io.IOException;
24 import java.io.PrintStream;
25
26 public class Transformer {
27
28 public
29 static
30 void transform(String in, String out, Filter[] filters) throws IOException,
31 UnexpectedFormatException {
32
33 String line;
34 BufferedReader input = new BufferedReader(new FileReader(in));
35 PrintStream output = new PrintStream(new FileOutputStream(out, false));
36
37 // Initialization of input and output omitted
38 while((line = input.readLine()) != null) {
39 // apply all filters
40 for(int i = 0; i < filters.length; i++) {
41 line = filters[i].filter(line);
42 }
43 if(line != null) {
44 output.println(line);
45 }
46 }
47 }
48
49
50
51 public
52 static
53 void transform(String in, String out, Filter filter) throws IOException,
54 UnexpectedFormatException {
55
56 String line;
57 BufferedReader input = new BufferedReader(new FileReader(in));
58 PrintStream output = new PrintStream(new FileOutputStream(out));
59
60 // Initialization of input and output omitted
61 while((line = input.readLine()) != null) {
62 line = filter.filter(line);
63 output.println(line);
64 }
65 }
66
67 }