Mercurial > hg4j

annotate src/org/tmatesoft/hg/internal/RevlogDump.java @ 713:661e77dc88ba tip

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Mac support: respect Mac alternatives of command-line arguments for common unix tools
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Sun, 03 Aug 2014 18:09:00 +0200
parents 47dfa0ec7e35
children
rev   line source
22
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 17
diff changeset
1 /*
533
e6f72c9829a6 Generate patches using diff algorithm
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 420
diff changeset
2 * Copyright (c) 2010-2013 TMate Software Ltd
73
0d279bcc4442 Utility for future troubleshooting
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 47
diff changeset
3 *
0d279bcc4442 Utility for future troubleshooting
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 47
diff changeset
4 * This program is free software; you can redistribute it and/or modify
0d279bcc4442 Utility for future troubleshooting
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 47
diff changeset
5 * it under the terms of the GNU General Public License as published by
0d279bcc4442 Utility for future troubleshooting
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 47
diff changeset
6 * the Free Software Foundation; version 2 of the License.
0d279bcc4442 Utility for future troubleshooting
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 47
diff changeset
7 *
0d279bcc4442 Utility for future troubleshooting
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 47
diff changeset
8 * This program is distributed in the hope that it will be useful,
0d279bcc4442 Utility for future troubleshooting
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 47
diff changeset
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
0d279bcc4442 Utility for future troubleshooting
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 47
diff changeset
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
0d279bcc4442 Utility for future troubleshooting
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 47
diff changeset
11 * GNU General Public License for more details.
0d279bcc4442 Utility for future troubleshooting
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 47
diff changeset
12 *
0d279bcc4442 Utility for future troubleshooting
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 47
diff changeset
13 * For information on how to redistribute this software under
0d279bcc4442 Utility for future troubleshooting
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 47
diff changeset
14 * the terms of a license other than GNU General Public License
102
a3a2e5deb320 Updated contact address to support@hg4j.com
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 88
diff changeset
15 * contact TMate Software at support@hg4j.com
22
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 17
diff changeset
16 */
73
0d279bcc4442 Utility for future troubleshooting
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 47
diff changeset
17 package org.tmatesoft.hg.internal;
0
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
18
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
19 import java.io.BufferedInputStream;
392
656a6c1346ff Extra debug option (dumpDataStats) and patch structure decoding for RevlogDump debug utility
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 376
diff changeset
20 import java.io.ByteArrayInputStream;
0
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
21 import java.io.DataInput;
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
22 import java.io.DataInputStream;
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
23 import java.io.File;
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
24 import java.io.FileInputStream;
392
656a6c1346ff Extra debug option (dumpDataStats) and patch structure decoding for RevlogDump debug utility
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 376
diff changeset
25 import java.io.IOException;
656a6c1346ff Extra debug option (dumpDataStats) and patch structure decoding for RevlogDump debug utility
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 376
diff changeset
26 import java.io.UnsupportedEncodingException;
0
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
27 import java.math.BigInteger;
376
d45ad07dc94c Allow content dump for separate .i and .d files
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 189
diff changeset
28 import java.nio.ByteBuffer;
d45ad07dc94c Allow content dump for separate .i and .d files
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 189
diff changeset
29 import java.nio.channels.FileChannel;
533
e6f72c9829a6 Generate patches using diff algorithm
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 420
diff changeset
30 import java.util.regex.Matcher;
e6f72c9829a6 Generate patches using diff algorithm
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 420
diff changeset
31 import java.util.regex.Pattern;
583
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
32 import java.util.zip.DataFormatException;
0
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
33 import java.util.zip.Inflater;
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
34
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
35 /**
73
0d279bcc4442 Utility for future troubleshooting
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 47
diff changeset
36 * Utility to test/debug/troubleshoot
0d279bcc4442 Utility for future troubleshooting
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 47
diff changeset
37 *
0d279bcc4442 Utility for future troubleshooting
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 47
diff changeset
38 * @author Artem Tikhomirov
0d279bcc4442 Utility for future troubleshooting
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 47
diff changeset
39 * @author TMate Software Ltd.
0
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
40 */
73
0d279bcc4442 Utility for future troubleshooting
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 47
diff changeset
41 public class RevlogDump {
0
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
42
73
0d279bcc4442 Utility for future troubleshooting
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 47
diff changeset
43 /**
0d279bcc4442 Utility for future troubleshooting
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 47
diff changeset
44 * Takes 3 command line arguments -
0d279bcc4442 Utility for future troubleshooting
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 47
diff changeset
45 * repository path,
0d279bcc4442 Utility for future troubleshooting
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 47
diff changeset
46 * path to index file (i.e. store/data/hello.c.i) in the repository (relative)
0d279bcc4442 Utility for future troubleshooting
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 47
diff changeset
47 * and "dumpData" whether to print actual content or just revlog headers
0d279bcc4442 Utility for future troubleshooting
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 47
diff changeset
48 */
0
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
49 public static void main(String[] args) throws Exception {
73
0d279bcc4442 Utility for future troubleshooting
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 47
diff changeset
50 String repo = "/temp/hg/hello/.hg/";
0d279bcc4442 Utility for future troubleshooting
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 47
diff changeset
51 String filename = "store/00changelog.i";
22
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 17
diff changeset
52 // String filename = "store/data/hello.c.i";
4
aa1912c70b36 Fix offset issue for inline revlogs. Commandline processing.
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 3
diff changeset
53 // String filename = "store/data/docs/readme.i";
583
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
54 // System.out.println(escape("abc\0def\nzxc\tmnb"));
392
656a6c1346ff Extra debug option (dumpDataStats) and patch structure decoding for RevlogDump debug utility
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 376
diff changeset
55 boolean dumpDataFull = true;
656a6c1346ff Extra debug option (dumpDataStats) and patch structure decoding for RevlogDump debug utility
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 376
diff changeset
56 boolean dumpDataStats = false;
88
61eedab3eb3e Status between two revisions to recognize copy/rename
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 73
diff changeset
57 if (args.length > 1) {
73
0d279bcc4442 Utility for future troubleshooting
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 47
diff changeset
58 repo = args[0];
0d279bcc4442 Utility for future troubleshooting
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 47
diff changeset
59 filename = args[1];
392
656a6c1346ff Extra debug option (dumpDataStats) and patch structure decoding for RevlogDump debug utility
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 376
diff changeset
60 dumpDataFull = args.length > 2 ? "dumpData".equals(args[2]) : false;
656a6c1346ff Extra debug option (dumpDataStats) and patch structure decoding for RevlogDump debug utility
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 376
diff changeset
61 dumpDataStats = args.length > 2 ? "dumpDataStats".equals(args[2]) : false;
73
0d279bcc4442 Utility for future troubleshooting
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 47
diff changeset
62 }
392
656a6c1346ff Extra debug option (dumpDataStats) and patch structure decoding for RevlogDump debug utility
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 376
diff changeset
63 final boolean needRevData = dumpDataFull || dumpDataStats;
0
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
64 //
583
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
65 RevlogReader rr = new RevlogReader(new File(repo, filename)).needData(needRevData);
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
66 rr.init(needRevData);
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
67 System.out.printf("%#8x, inline: %b\n", rr.versionField, rr.inlineData);
73
0d279bcc4442 Utility for future troubleshooting
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 47
diff changeset
68 System.out.println("Index Offset Flags Packed Actual Base Rev Link Rev Parent1 Parent2 nodeid");
583
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
69 ByteBuffer data = null;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
70 while (rr.hasMore()) {
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
71 rr.readNext();
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
72 System.out.printf("%4d:%14d %6X %10d %10d %10d %10d %8d %8d %040x\n", rr.entryIndex, rr.offset, rr.flags, rr.compressedLen, rr.actualLen, rr.baseRevision, rr.linkRevision, rr.parent1Revision, rr.parent2Revision, new BigInteger(rr.nodeid));
392
656a6c1346ff Extra debug option (dumpDataStats) and patch structure decoding for RevlogDump debug utility
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 376
diff changeset
73 if (needRevData) {
583
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
74 String resultString;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
75 if (rr.getDataLength() == 0) {
376
d45ad07dc94c Allow content dump for separate .i and .d files
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 189
diff changeset
76 resultString = "<NO DATA>";
3
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 2
diff changeset
77 } else {
583
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
78 data = ensureCapacity(data, rr.getDataLength());
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
79 rr.getData(data);
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
80 data.flip();
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
81 resultString = buildString(data, rr.isPatch(), dumpDataFull);
3
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 2
diff changeset
82 }
583
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
83 if (resultString.endsWith("\n")) {
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
84 System.out.print(resultString);
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
85 } else {
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
86 System.out.println(resultString);
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
87 }
0
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
88 }
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
89 }
583
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
90 rr.done();
0
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
91 }
392
656a6c1346ff Extra debug option (dumpDataStats) and patch structure decoding for RevlogDump debug utility
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 376
diff changeset
92
583
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
93 private static ByteBuffer ensureCapacity(ByteBuffer src, int requiredCap) {
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
94 if (src == null || src.capacity() < requiredCap) {
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
95 return ByteBuffer.allocate((1 + requiredCap) * 3 / 2);
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
96 }
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
97 src.clear();
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
98 return src;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
99 }
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
100
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
101 private static String buildString(ByteBuffer data, boolean isPatch, boolean completeDataDump) throws IOException, UnsupportedEncodingException {
392
656a6c1346ff Extra debug option (dumpDataStats) and patch structure decoding for RevlogDump debug utility
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 376
diff changeset
102 if (isPatch) {
583
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
103 DataInputStream dis = new DataInputStream(new ByteArrayInputStream(data.array(), data.arrayOffset(), data.remaining()));
392
656a6c1346ff Extra debug option (dumpDataStats) and patch structure decoding for RevlogDump debug utility
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 376
diff changeset
104 StringBuilder sb = new StringBuilder();
656a6c1346ff Extra debug option (dumpDataStats) and patch structure decoding for RevlogDump debug utility
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 376
diff changeset
105 sb.append("<PATCH>:\n");
656a6c1346ff Extra debug option (dumpDataStats) and patch structure decoding for RevlogDump debug utility
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 376
diff changeset
106 while (dis.available() > 0) {
656a6c1346ff Extra debug option (dumpDataStats) and patch structure decoding for RevlogDump debug utility
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 376
diff changeset
107 int s = dis.readInt();
656a6c1346ff Extra debug option (dumpDataStats) and patch structure decoding for RevlogDump debug utility
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 376
diff changeset
108 int e = dis.readInt();
656a6c1346ff Extra debug option (dumpDataStats) and patch structure decoding for RevlogDump debug utility
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 376
diff changeset
109 int l = dis.readInt();
656a6c1346ff Extra debug option (dumpDataStats) and patch structure decoding for RevlogDump debug utility
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 376
diff changeset
110 sb.append(String.format("%d..%d, %d", s, e, l));
656a6c1346ff Extra debug option (dumpDataStats) and patch structure decoding for RevlogDump debug utility
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 376
diff changeset
111 if (completeDataDump) {
656a6c1346ff Extra debug option (dumpDataStats) and patch structure decoding for RevlogDump debug utility
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 376
diff changeset
112 byte[] src = new byte[l];
656a6c1346ff Extra debug option (dumpDataStats) and patch structure decoding for RevlogDump debug utility
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 376
diff changeset
113 dis.read(src, 0, l);
656a6c1346ff Extra debug option (dumpDataStats) and patch structure decoding for RevlogDump debug utility
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 376
diff changeset
114 sb.append(":");
533
e6f72c9829a6 Generate patches using diff algorithm
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 420
diff changeset
115 sb.append(escape(new String(src, 0, l, "UTF-8")));
392
656a6c1346ff Extra debug option (dumpDataStats) and patch structure decoding for RevlogDump debug utility
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 376
diff changeset
116 } else {
656a6c1346ff Extra debug option (dumpDataStats) and patch structure decoding for RevlogDump debug utility
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 376
diff changeset
117 dis.skipBytes(l);
656a6c1346ff Extra debug option (dumpDataStats) and patch structure decoding for RevlogDump debug utility
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 376
diff changeset
118 }
656a6c1346ff Extra debug option (dumpDataStats) and patch structure decoding for RevlogDump debug utility
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 376
diff changeset
119 sb.append('\n');
656a6c1346ff Extra debug option (dumpDataStats) and patch structure decoding for RevlogDump debug utility
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 376
diff changeset
120 }
656a6c1346ff Extra debug option (dumpDataStats) and patch structure decoding for RevlogDump debug utility
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 376
diff changeset
121 return sb.toString();
656a6c1346ff Extra debug option (dumpDataStats) and patch structure decoding for RevlogDump debug utility
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 376
diff changeset
122 } else {
656a6c1346ff Extra debug option (dumpDataStats) and patch structure decoding for RevlogDump debug utility
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 376
diff changeset
123 if (completeDataDump) {
583
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
124 return escape(new String(data.array(), data.arrayOffset(), data.remaining(), "UTF-8"));
392
656a6c1346ff Extra debug option (dumpDataStats) and patch structure decoding for RevlogDump debug utility
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 376
diff changeset
125 }
583
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
126 return String.format("<DATA>:%d bytes", data.remaining());
392
656a6c1346ff Extra debug option (dumpDataStats) and patch structure decoding for RevlogDump debug utility
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 376
diff changeset
127 }
656a6c1346ff Extra debug option (dumpDataStats) and patch structure decoding for RevlogDump debug utility
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 376
diff changeset
128 }
533
e6f72c9829a6 Generate patches using diff algorithm
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 420
diff changeset
129
e6f72c9829a6 Generate patches using diff algorithm
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 420
diff changeset
130 private static Pattern controlCharPattern = Pattern.compile("\\p{Cntrl}");
e6f72c9829a6 Generate patches using diff algorithm
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 420
diff changeset
131 // \p{Cntrl} A control character: [\x00-\x1F\x7F]
e6f72c9829a6 Generate patches using diff algorithm
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 420
diff changeset
132 private static String[] replacements = new String[33];
e6f72c9829a6 Generate patches using diff algorithm
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 420
diff changeset
133 static {
e6f72c9829a6 Generate patches using diff algorithm
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 420
diff changeset
134 for (int i = 0; i < 32; i++) {
e6f72c9829a6 Generate patches using diff algorithm
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 420
diff changeset
135 // no idea why need FOUR backslashes to get only one in printout
e6f72c9829a6 Generate patches using diff algorithm
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 420
diff changeset
136 replacements[i] = String.format("\\\\%X", i);
e6f72c9829a6 Generate patches using diff algorithm
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 420
diff changeset
137 }
e6f72c9829a6 Generate patches using diff algorithm
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 420
diff changeset
138 replacements[32] = String.format("\\\\%X", 127);
e6f72c9829a6 Generate patches using diff algorithm
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 420
diff changeset
139 }
e6f72c9829a6 Generate patches using diff algorithm
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 420
diff changeset
140 // handy to get newline-separated data printed on newlines.
e6f72c9829a6 Generate patches using diff algorithm
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 420
diff changeset
141 // set to false for non-printable data (e.g. binaries, where \n doesn't make sense)
e6f72c9829a6 Generate patches using diff algorithm
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 420
diff changeset
142 private static boolean leaveNewlineInData = true;
e6f72c9829a6 Generate patches using diff algorithm
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 420
diff changeset
143
e6f72c9829a6 Generate patches using diff algorithm
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 420
diff changeset
144 private static String escape(CharSequence possiblyWithBinary) {
e6f72c9829a6 Generate patches using diff algorithm
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 420
diff changeset
145 Matcher m = controlCharPattern.matcher(possiblyWithBinary);
e6f72c9829a6 Generate patches using diff algorithm
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 420
diff changeset
146 StringBuffer rv = new StringBuffer();
e6f72c9829a6 Generate patches using diff algorithm
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 420
diff changeset
147 while (m.find()) {
e6f72c9829a6 Generate patches using diff algorithm
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 420
diff changeset
148 char c = m.group().charAt(0);
e6f72c9829a6 Generate patches using diff algorithm
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 420
diff changeset
149 if (leaveNewlineInData && c == '\n') {
e6f72c9829a6 Generate patches using diff algorithm
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 420
diff changeset
150 continue;
e6f72c9829a6 Generate patches using diff algorithm
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 420
diff changeset
151 }
e6f72c9829a6 Generate patches using diff algorithm
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 420
diff changeset
152 int x = (int) c;
e6f72c9829a6 Generate patches using diff algorithm
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 420
diff changeset
153 m.appendReplacement(rv, replacements[x == 127 ? 32 : x]);
e6f72c9829a6 Generate patches using diff algorithm
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 420
diff changeset
154 }
e6f72c9829a6 Generate patches using diff algorithm
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 420
diff changeset
155 m.appendTail(rv);
e6f72c9829a6 Generate patches using diff algorithm
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 420
diff changeset
156 return rv.toString();
e6f72c9829a6 Generate patches using diff algorithm
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 420
diff changeset
157 }
583
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
158
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
159 public static class RevlogReader {
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
160
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
161 private final File file;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
162 private boolean needRevData;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
163 private DataInputStream dis;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
164 private boolean inlineData;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
165 public int versionField;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
166 private FileChannel dataStream;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
167 public int entryIndex;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
168 private byte[] data;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
169 private int dataOffset, dataLen;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
170 public long offset;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
171 public int flags;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
172 public int baseRevision;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
173 public int linkRevision;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
174 public int parent1Revision;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
175 public int parent2Revision;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
176 public int compressedLen;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
177 public int actualLen;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
178 public byte[] nodeid = new byte[21]; // need 1 byte in the front to be 0 to avoid negative BigInts
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
179
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
180 public RevlogReader(File f) {
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
181 assert f.getName().endsWith(".i");
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
182 file = f;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
183 }
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
184
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
185 // affects #readNext()
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
186 public RevlogReader needData(boolean needData) {
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
187 needRevData = needData;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
188 return this;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
189 }
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
190
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
191 public void init(boolean mayRequireData) throws IOException {
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
192 dis = new DataInputStream(new BufferedInputStream(new FileInputStream(file)));
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
193 DataInput di = dis;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
194 dis.mark(10);
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
195 versionField = di.readInt();
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
196 dis.reset();
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
197 final int INLINEDATA = 1 << 16;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
198 inlineData = (versionField & INLINEDATA) != 0;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
199
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
200 dataStream = null;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
201 if (!inlineData && mayRequireData) {
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
202 String fname = file.getAbsolutePath();
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
203 dataStream = new FileInputStream(new File(fname.substring(0, fname.length()-2) + ".d")).getChannel();
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
204 }
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
205
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
206 entryIndex = -1;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
207 }
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
208
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
209 public void startFrom(int startEntryIndex) throws IOException {
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
210 if (dis == null) {
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
211 throw new IllegalStateException("Call #init() first");
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
212 }
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
213 if (entryIndex != -1 && startEntryIndex != 0) {
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
214 throw new IllegalStateException("Can't seek once iteration has started");
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
215 }
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
216 if (dataStream == null) {
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
217 throw new IllegalStateException("Sorry, initial seek is now supported for separate .i/.d only");
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
218 }
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
219 long newPos = startEntryIndex * Internals.REVLOGV1_RECORD_SIZE, actualSkip;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
220 do {
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
221 actualSkip = dis.skip(newPos);
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
222 if (actualSkip <= 0) {
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
223 throw new IllegalStateException(String.valueOf(actualSkip));
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
224 }
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
225 newPos -= actualSkip;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
226 } while (newPos > 0);
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
227 entryIndex = startEntryIndex - 1;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
228 }
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
229
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
230 public boolean hasMore() throws IOException {
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
231 return dis.available() > 0;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
232 }
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
233
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
234 public void readNext() throws IOException, DataFormatException {
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
235 entryIndex++;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
236 DataInput di = dis;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
237 long l = di.readLong();
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
238 offset = entryIndex == 0 ? 0 : (l >>> 16);
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
239 flags = (int) (l & 0x0FFFF);
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
240 compressedLen = di.readInt();
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
241 actualLen = di.readInt();
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
242 baseRevision = di.readInt();
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
243 linkRevision = di.readInt();
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
244 parent1Revision = di.readInt();
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
245 parent2Revision = di.readInt();
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
246 di.readFully(nodeid, 1, 20);
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
247 dis.skipBytes(12);
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
248 // CAN'T USE skip() here without extra precautions. E.g. I ran into situation when
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
249 // buffer was 8192 and BufferedInputStream was at position 8182 before attempt to skip(12).
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
250 // BIS silently skips available bytes and leaves me two extra bytes that ruin the rest of the code.
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
251 data = new byte[compressedLen];
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
252 if (inlineData) {
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
253 di.readFully(data);
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
254 } else if (needRevData) {
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
255 dataStream.position(offset);
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
256 dataStream.read(ByteBuffer.wrap(data));
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
257 }
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
258 if (needRevData) {
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
259 if (compressedLen == 0) {
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
260 data = null;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
261 dataOffset = dataLen = 0;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
262 } else {
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
263 if (data[0] == 0x78 /* 'x' */) {
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
264 Inflater zlib = new Inflater();
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
265 zlib.setInput(data, 0, compressedLen);
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
266 byte[] result = new byte[actualLen * 3];
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
267 int resultLen = zlib.inflate(result);
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
268 zlib.end();
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
269 data = result;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
270 dataOffset = 0;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
271 dataLen = resultLen;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
272 } else if (data[0] == 0x75 /* 'u' */) {
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
273 dataOffset = 1;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
274 dataLen = data.length - 1;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
275 } else {
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
276 dataOffset = 0;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
277 dataLen = data.length;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
278 }
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
279 }
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
280 }
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
281 }
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
282
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
283 public int getDataLength() {
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
284 // NOT actualLen - there are empty patch revisions (dataLen == 0, but actualLen == previous length)
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
285 // NOT compressedLen - zip data is uncompressed
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
286 return dataLen;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
287 }
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
288
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
289 public void getData(ByteBuffer bb) {
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
290 assert bb.remaining() >= dataLen;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
291 bb.put(data, dataOffset, dataLen);
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
292 }
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
293
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
294 public boolean isPatch() {
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
295 assert entryIndex != -1;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
296 return baseRevision != entryIndex;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
297 }
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
298
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
299 public boolean isInline() {
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
300 assert dis != null;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
301 return inlineData;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
302 }
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
303
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
304 public void done() throws IOException {
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
305 dis.close();
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
306 dis = null;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
307 if (dataStream != null) {
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
308 dataStream.close();
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
309 dataStream = null;
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
310 }
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
311 }
47dfa0ec7e35 Effective revlog patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 533
diff changeset
312 }
0
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
313 }