1 /*
2 * Copyright 2005 The Apache Software Foundation.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package org.vafer.jdeb.utils;
17
18 import java.io.IOException;
19 import java.io.OutputStream;
20 import java.security.DigestOutputStream;
21 import java.security.MessageDigest;
22
23 /**
24 * Convinience class to provide MD5 and length of a stream.
25 *
26 * ATTENTION: don't use outside of jdeb
27 *
28 * @author Torsten Curdt <tcurdt@vafer.org>
29 */
30 public class InformationOutputStream extends DigestOutputStream {
31
32 private final MessageDigest digest;
33 private long size;
34
35 public InformationOutputStream(OutputStream pStream, MessageDigest pDigest) {
36 super(pStream, pDigest);
37 digest = pDigest;
38 size = 0;
39 }
40
41 public String getMd5() {
42 return Utils.toHex(digest.digest());
43 }
44
45 public void write(byte[] b, int off, int len) throws IOException {
46 super.write(b, off, len);
47 size += len;
48 }
49
50 public void write(int b) throws IOException {
51 super.write(b);
52 size++;
53 }
54
55 public long getSize() {
56 return size;
57 }
58 }