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comparison test/org/tmatesoft/hg/tools/ManifestEntryBuilder.java @ 384:4b97847d0b2d

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Auxilary builders for manifest and changelog to create test repositories
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Mon, 13 Feb 2012 13:20:06 +0100
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383:994b5813a925 384:4b97847d0b2d
1 /*
2 * Copyright (c) 2012 TMate Software Ltd
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 2 of the License.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * For information on how to redistribute this software under
14 * the terms of a license other than GNU General Public License
15 * contact TMate Software at support@hg4j.com
16 */
17 package org.tmatesoft.hg.tools;
18
19 import java.io.ByteArrayOutputStream;
20
21 import org.tmatesoft.hg.core.Nodeid;
22
23 /**
24 * Create binary manifest entry ready to write down into 00manifest.i
25 * <p>Usage:
26 * <pre>
27 * ManifestEntryBuilder mb = new ManifestEntryBuilder();
28 * mb.reset().add("file1", file1.getRevision(r1));
29 * mb.add("file2", file2.getRevision(r2));
30 * byte[] manifestRecordData = mb.build();
31 * byte[] manifestRevlogHeader = buildRevlogHeader(..., sha1(parents, manifestRecordData), manifestRecordData.length);
32 * manifestIndexOutputStream.write(manifestRevlogHeader);
33 * manifestIndexOutputStream.write(manifestRecordData);
34 * </pre>
35 *
36 * @author Artem Tikhomirov
37 * @author TMate Software Ltd.
38 */
39 public class ManifestEntryBuilder {
40 private ByteArrayOutputStream buffer = new ByteArrayOutputStream();
41
42
43 public ManifestEntryBuilder reset() {
44 buffer.reset();
45 return this;
46 }
47 public ManifestEntryBuilder add(String fname, Nodeid revision) {
48 byte[] b = fname.getBytes();
49 buffer.write(b, 0, b.length);
50 buffer.write('\0');
51 b = revision.toString().getBytes();
52 buffer.write(b, 0, b.length);
53 buffer.write('\n');
54 return this;
55 }
56
57 public byte[] build() {
58 return buffer.toByteArray();
59 }
60
61 }