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 package org.apache.commons.io.output;
18
19 import java.io.IOException;
20 import java.io.OutputStream;
21
22 /**
23 * Classic splitter of OutputStream. Named after the unix 'tee'
24 * command. It allows a stream to be branched off so there
25 * are now two streams.
26 *
27 * @version $Id: TeeOutputStream.java 471628 2006-11-06 04:06:45Z bayard $
28 */
29 public class TeeOutputStream extends ProxyOutputStream {
30
31 /** the second OutputStream to write to */
32 protected OutputStream branch;
33
34 /**
35 * Constructs a TeeOutputStream.
36 * @param out the main OutputStream
37 * @param branch the second OutputStream
38 */
39 public TeeOutputStream( OutputStream out, OutputStream branch ) {
40 super(out);
41 this.branch = branch;
42 }
43
44 /** @see java.io.OutputStream#write(byte[]) */
45 public synchronized void write(byte[] b) throws IOException {
46 super.write(b);
47 this.branch.write(b);
48 }
49
50 /** @see java.io.OutputStream#write(byte[], int, int) */
51 public synchronized void write(byte[] b, int off, int len) throws IOException {
52 super.write(b, off, len);
53 this.branch.write(b, off, len);
54 }
55
56 /** @see java.io.OutputStream#write(int) */
57 public synchronized void write(int b) throws IOException {
58 super.write(b);
59 this.branch.write(b);
60 }
61
62 /**
63 * Flushes both streams.
64 *
65 * @see java.io.OutputStream#flush()
66 */
67 public void flush() throws IOException {
68 super.flush();
69 this.branch.flush();
70 }
71
72 /**
73 * Closes both streams.
74 *
75 * @see java.io.OutputStream#close()
76 */
77 public void close() throws IOException {
78 super.close();
79 this.branch.close();
80 }
81
82 }