1 /*
2 * Copyright (C) 2011, Google Inc.
3 * and other copyright owners as documented in the project's IP log.
4 *
5 * This program and the accompanying materials are made available
6 * under the terms of the Eclipse Distribution License v1.0 which
7 * accompanies this distribution, is reproduced below, and is
8 * available at http://www.eclipse.org/org/documents/edl-v10.php
9 *
10 * All rights reserved.
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 *
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials provided
22 * with the distribution.
23 *
24 * - Neither the name of the Eclipse Foundation, Inc. nor the
25 * names of its contributors may be used to endorse or promote
26 * products derived from this software without specific prior
27 * written permission.
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
30 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
31 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
32 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
33 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
34 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
35 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
36 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
37 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
38 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
40 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
41 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
42 */
43
44 package org.eclipse.jgit.util.io;
45
46 import java.io.IOException;
47 import java.io.OutputStream;
48
49 /**
50 * Counts the number of bytes written.
51 */
52 public class CountingOutputStream extends OutputStream {
53 private final OutputStream out;
54 private long cnt;
55
56 /**
57 * Initialize a new counting stream.
58 *
59 * @param out
60 * stream to output all writes to.
61 */
62 public CountingOutputStream(OutputStream out) {
63 this.out = out;
64 }
65
66 /**
67 * Get current number of bytes written.
68 *
69 * @return current number of bytes written.
70 */
71 public long getCount() {
72 return cnt;
73 }
74
75 /** {@inheritDoc} */
76 @Override
77 public void write(int val) throws IOException {
78 out.write(val);
79 cnt++;
80 }
81
82 /** {@inheritDoc} */
83 @Override
84 public void write(byte[] buf, int off, int len) throws IOException {
85 out.write(buf, off, len);
86 cnt += len;
87 }
88
89 /** {@inheritDoc} */
90 @Override
91 public void flush() throws IOException {
92 out.flush();
93 }
94
95 /** {@inheritDoc} */
96 @Override
97 public void close() throws IOException {
98 out.close();
99 }
100 }