Mercurial > jhg

annotate src/org/tmatesoft/hg/internal/RevlogStream.java @ 245:2fb439375ddc

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Avoid sorting revision range twice
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 14 Jul 2011 03:18:37 +0200
parents 0e01f9182e16
children e5776067b3b8
rev   line source
10
382cfe9463db Dirstate parsing. DataAccess refactored to allow reuse and control over constants
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 9
diff changeset
1 /*
74
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 52
diff changeset
2 * Copyright (c) 2010-2011 TMate Software Ltd
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 52
diff changeset
3 *
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 52
diff changeset
4 * This program is free software; you can redistribute it and/or modify
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 52
diff changeset
5 * it under the terms of the GNU General Public License as published by
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 52
diff changeset
6 * the Free Software Foundation; version 2 of the License.
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 52
diff changeset
7 *
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 52
diff changeset
8 * This program is distributed in the hope that it will be useful,
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 52
diff changeset
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 52
diff changeset
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 52
diff changeset
11 * GNU General Public License for more details.
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 52
diff changeset
12 *
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 52
diff changeset
13 * For information on how to redistribute this software under
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 52
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
0
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
16 */
77
c677e1593919 Moved RevlogStream implementation into .internal
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 74
diff changeset
17 package org.tmatesoft.hg.internal;
0
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
18
80
4222b04f34ee Follow history of a file
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 77
diff changeset
19 import static org.tmatesoft.hg.repo.HgRepository.BAD_REVISION;
74
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 52
diff changeset
20 import static org.tmatesoft.hg.repo.HgRepository.TIP;
5
fc265ddeab26 File content and non-effective, although working, patch application
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 4
diff changeset
21
3
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 2
diff changeset
22 import java.io.File;
2
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
23 import java.io.IOException;
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
24 import java.util.ArrayList;
3
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 2
diff changeset
25 import java.util.LinkedList;
2
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
26 import java.util.List;
0
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
27
158
b413b16d10a5 Integer offsets and file length explictly, rather than casts throughout code. Inflater may benefit from total length hint, but shall calculate it by its own if needed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 157
diff changeset
28 import org.tmatesoft.hg.core.HgBadStateException;
74
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 52
diff changeset
29 import org.tmatesoft.hg.core.Nodeid;
80
4222b04f34ee Follow history of a file
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 77
diff changeset
30 import org.tmatesoft.hg.repo.HgRepository;
74
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 52
diff changeset
31
10
382cfe9463db Dirstate parsing. DataAccess refactored to allow reuse and control over constants
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 9
diff changeset
32
0
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
33 /**
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
34 * ? Single RevlogStream per file per repository with accessor to record access session (e.g. with back/forward operations),
198
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
35 * or numerous RevlogStream with separate representation of the underlying data (cached, lazy ChunkStream)?
74
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 52
diff changeset
36 *
0
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
37 * @see http://mercurial.selenic.com/wiki/Revlog
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
38 * @see http://mercurial.selenic.com/wiki/RevlogNG
74
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 52
diff changeset
39 *
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 52
diff changeset
40 * @author Artem Tikhomirov
6f1b88693d48 Complete refactoring to org.tmatesoft
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 52
diff changeset
41 * @author TMate Software Ltd.
0
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
42 */
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
43 public class RevlogStream {
2
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
44
198
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
45 /*
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
46 * makes sense for index with inline data only - actual offset of the record in the .i file (record entry + revision * record size))
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
47 *
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
48 * long[] in fact (there are 8-bytes field in the revlog)
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
49 * However, (a) DataAccess currently doesn't operate with long seek/length
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
50 * and, of greater significance, (b) files with inlined data are designated for smaller files,
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
51 * guess, about 130 Kb, and offset there won't ever break int capacity
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
52 */
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
53 private int[] indexRecordOffset;
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
54 private int[] baseRevisions;
2
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
55 private boolean inline = false;
3
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 2
diff changeset
56 private final File indexFile;
10
382cfe9463db Dirstate parsing. DataAccess refactored to allow reuse and control over constants
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 9
diff changeset
57 private final DataAccessProvider dataAccess;
3
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 2
diff changeset
58
10
382cfe9463db Dirstate parsing. DataAccess refactored to allow reuse and control over constants
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 9
diff changeset
59 // if we need anything else from HgRepo, might replace DAP parameter with HgRepo and query it for DAP.
77
c677e1593919 Moved RevlogStream implementation into .internal
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 74
diff changeset
60 public RevlogStream(DataAccessProvider dap, File indexFile) {
10
382cfe9463db Dirstate parsing. DataAccess refactored to allow reuse and control over constants
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 9
diff changeset
61 this.dataAccess = dap;
3
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 2
diff changeset
62 this.indexFile = indexFile;
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 2
diff changeset
63 }
2
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
64
9
d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 6
diff changeset
65 /*package*/ DataAccess getIndexStream() {
10
382cfe9463db Dirstate parsing. DataAccess refactored to allow reuse and control over constants
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 9
diff changeset
66 return dataAccess.create(indexFile);
0
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
67 }
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
68
9
d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 6
diff changeset
69 /*package*/ DataAccess getDataStream() {
3
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 2
diff changeset
70 final String indexName = indexFile.getName();
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 2
diff changeset
71 File dataFile = new File(indexFile.getParentFile(), indexName.substring(0, indexName.length() - 1) + "d");
10
382cfe9463db Dirstate parsing. DataAccess refactored to allow reuse and control over constants
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 9
diff changeset
72 return dataAccess.create(dataFile);
9
d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 6
diff changeset
73 }
d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 6
diff changeset
74
2
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
75 public int revisionCount() {
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
76 initOutline();
198
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
77 return baseRevisions.length;
2
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
78 }
22
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
79
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
80 public int dataLength(int revision) {
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
81 // XXX in fact, use of iterate() instead of this implementation may be quite reasonable.
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
82 //
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
83 final int indexSize = revisionCount();
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
84 DataAccess daIndex = getIndexStream(); // XXX may supply a hint that I'll need really few bytes of data (although at some offset)
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
85 if (revision == TIP) {
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
86 revision = indexSize - 1;
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
87 }
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
88 try {
198
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
89 int recordOffset = getIndexOffsetInt(revision);
22
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
90 daIndex.seek(recordOffset + 12); // 6+2+4
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
91 int actualLen = daIndex.readInt();
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
92 return actualLen;
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
93 } catch (IOException ex) {
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
94 ex.printStackTrace(); // log error. FIXME better handling
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
95 throw new IllegalStateException(ex);
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
96 } finally {
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
97 daIndex.done();
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
98 }
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
99 }
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
100
80
4222b04f34ee Follow history of a file
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 77
diff changeset
101 public byte[] nodeid(int revision) {
4222b04f34ee Follow history of a file
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 77
diff changeset
102 final int indexSize = revisionCount();
4222b04f34ee Follow history of a file
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 77
diff changeset
103 if (revision == TIP) {
4222b04f34ee Follow history of a file
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 77
diff changeset
104 revision = indexSize - 1;
4222b04f34ee Follow history of a file
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 77
diff changeset
105 }
4222b04f34ee Follow history of a file
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 77
diff changeset
106 if (revision < 0 || revision >= indexSize) {
4222b04f34ee Follow history of a file
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 77
diff changeset
107 throw new IllegalArgumentException(Integer.toString(revision));
4222b04f34ee Follow history of a file
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 77
diff changeset
108 }
4222b04f34ee Follow history of a file
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 77
diff changeset
109 DataAccess daIndex = getIndexStream();
4222b04f34ee Follow history of a file
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 77
diff changeset
110 try {
198
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
111 int recordOffset = getIndexOffsetInt(revision);
80
4222b04f34ee Follow history of a file
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 77
diff changeset
112 daIndex.seek(recordOffset + 32);
4222b04f34ee Follow history of a file
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 77
diff changeset
113 byte[] rv = new byte[20];
4222b04f34ee Follow history of a file
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 77
diff changeset
114 daIndex.readBytes(rv, 0, 20);
4222b04f34ee Follow history of a file
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 77
diff changeset
115 return rv;
4222b04f34ee Follow history of a file
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 77
diff changeset
116 } catch (IOException ex) {
4222b04f34ee Follow history of a file
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 77
diff changeset
117 ex.printStackTrace();
4222b04f34ee Follow history of a file
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 77
diff changeset
118 throw new IllegalStateException();
4222b04f34ee Follow history of a file
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 77
diff changeset
119 } finally {
88
61eedab3eb3e Status between two revisions to recognize copy/rename
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 80
diff changeset
120 daIndex.done();
61eedab3eb3e Status between two revisions to recognize copy/rename
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 80
diff changeset
121 }
61eedab3eb3e Status between two revisions to recognize copy/rename
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 80
diff changeset
122 }
61eedab3eb3e Status between two revisions to recognize copy/rename
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 80
diff changeset
123
61eedab3eb3e Status between two revisions to recognize copy/rename
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 80
diff changeset
124 public int linkRevision(int revision) {
61eedab3eb3e Status between two revisions to recognize copy/rename
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 80
diff changeset
125 final int last = revisionCount() - 1;
61eedab3eb3e Status between two revisions to recognize copy/rename
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 80
diff changeset
126 if (revision == TIP) {
61eedab3eb3e Status between two revisions to recognize copy/rename
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 80
diff changeset
127 revision = last;
61eedab3eb3e Status between two revisions to recognize copy/rename
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 80
diff changeset
128 }
61eedab3eb3e Status between two revisions to recognize copy/rename
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 80
diff changeset
129 if (revision < 0 || revision > last) {
61eedab3eb3e Status between two revisions to recognize copy/rename
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 80
diff changeset
130 throw new IllegalArgumentException(Integer.toString(revision));
61eedab3eb3e Status between two revisions to recognize copy/rename
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 80
diff changeset
131 }
61eedab3eb3e Status between two revisions to recognize copy/rename
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 80
diff changeset
132 DataAccess daIndex = getIndexStream();
61eedab3eb3e Status between two revisions to recognize copy/rename
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 80
diff changeset
133 try {
198
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
134 int recordOffset = getIndexOffsetInt(revision);
88
61eedab3eb3e Status between two revisions to recognize copy/rename
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 80
diff changeset
135 daIndex.seek(recordOffset + 20);
61eedab3eb3e Status between two revisions to recognize copy/rename
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 80
diff changeset
136 int linkRev = daIndex.readInt();
61eedab3eb3e Status between two revisions to recognize copy/rename
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 80
diff changeset
137 return linkRev;
61eedab3eb3e Status between two revisions to recognize copy/rename
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 80
diff changeset
138 } catch (IOException ex) {
61eedab3eb3e Status between two revisions to recognize copy/rename
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 80
diff changeset
139 ex.printStackTrace();
61eedab3eb3e Status between two revisions to recognize copy/rename
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 80
diff changeset
140 throw new IllegalStateException();
61eedab3eb3e Status between two revisions to recognize copy/rename
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 80
diff changeset
141 } finally {
61eedab3eb3e Status between two revisions to recognize copy/rename
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 80
diff changeset
142 daIndex.done();
80
4222b04f34ee Follow history of a file
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 77
diff changeset
143 }
4222b04f34ee Follow history of a file
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 77
diff changeset
144 }
4222b04f34ee Follow history of a file
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 77
diff changeset
145
49
26e3eeaa3962 branch and user filtering for log operation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 44
diff changeset
146 // Perhaps, RevlogStream should be limited to use of plain int revisions for access,
26e3eeaa3962 branch and user filtering for log operation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 44
diff changeset
147 // while Nodeids should be kept on the level up, in Revlog. Guess, Revlog better keep
26e3eeaa3962 branch and user filtering for log operation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 44
diff changeset
148 // map of nodeids, and once this comes true, we may get rid of this method.
80
4222b04f34ee Follow history of a file
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 77
diff changeset
149 // Unlike its counterpart, {@link Revlog#getLocalRevisionNumber()}, doesn't fail with exception if node not found,
4222b04f34ee Follow history of a file
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 77
diff changeset
150 /**
4222b04f34ee Follow history of a file
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 77
diff changeset
151 * @return integer in [0..revisionCount()) or {@link HgRepository#BAD_REVISION} if not found
4222b04f34ee Follow history of a file
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 77
diff changeset
152 */
77
c677e1593919 Moved RevlogStream implementation into .internal
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 74
diff changeset
153 public int findLocalRevisionNumber(Nodeid nodeid) {
22
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
154 // XXX this one may be implemented with iterate() once there's mechanism to stop iterations
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
155 final int indexSize = revisionCount();
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
156 DataAccess daIndex = getIndexStream();
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
157 try {
24
d4fdd1845b3f Nodeid with array of exactly 20 bytes
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 22
diff changeset
158 byte[] nodeidBuf = new byte[20];
22
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
159 for (int i = 0; i < indexSize; i++) {
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
160 daIndex.skip(8);
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
161 int compressedLen = daIndex.readInt();
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
162 daIndex.skip(20);
24
d4fdd1845b3f Nodeid with array of exactly 20 bytes
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 22
diff changeset
163 daIndex.readBytes(nodeidBuf, 0, 20);
d4fdd1845b3f Nodeid with array of exactly 20 bytes
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 22
diff changeset
164 if (nodeid.equalsTo(nodeidBuf)) {
22
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
165 return i;
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
166 }
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
167 daIndex.skip(inline ? 12 + compressedLen : 12);
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
168 }
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
169 } catch (IOException ex) {
243
0e01f9182e16 External cache Nodeid<->int added, Revlog.RevisionMap
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 242
diff changeset
170 ex.printStackTrace(); // log error. FIXME better handling. Perhaps, shall return BAD_REVISION here as well?
22
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
171 throw new IllegalStateException(ex);
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
172 } finally {
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
173 daIndex.done();
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
174 }
80
4222b04f34ee Follow history of a file
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 77
diff changeset
175 return BAD_REVISION;
22
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
176 }
603806cd2dc6 Status of local working dir against non-tip base revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 10
diff changeset
177
2
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
178
9
d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 6
diff changeset
179 private final int REVLOGV1_RECORD_SIZE = 64;
d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 6
diff changeset
180
3
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 2
diff changeset
181 // should be possible to use TIP, ALL, or -1, -2, -n notation of Hg
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 2
diff changeset
182 // ? boolean needsNodeid
77
c677e1593919 Moved RevlogStream implementation into .internal
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 74
diff changeset
183 public void iterate(int start, int end, boolean needData, Inspector inspector) {
2
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
184 initOutline();
198
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
185 final int indexSize = revisionCount();
3
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 2
diff changeset
186 if (indexSize == 0) {
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 2
diff changeset
187 return;
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 2
diff changeset
188 }
5
fc265ddeab26 File content and non-effective, although working, patch application
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 4
diff changeset
189 if (end == TIP) {
3
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 2
diff changeset
190 end = indexSize - 1;
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 2
diff changeset
191 }
5
fc265ddeab26 File content and non-effective, although working, patch application
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 4
diff changeset
192 if (start == TIP) {
fc265ddeab26 File content and non-effective, although working, patch application
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 4
diff changeset
193 start = indexSize - 1;
fc265ddeab26 File content and non-effective, although working, patch application
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 4
diff changeset
194 }
2
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
195 if (start < 0 || start >= indexSize) {
157
d5268ca7715b Merged branch wrap-data-access into default for resource-friendly data access. Updated API to promote that friendliness to clients (channels, not byte[]). More exceptions
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 53 102
diff changeset
196 throw new IllegalArgumentException(String.format("Bad left range boundary %d in [0..%d]", start, indexSize-1));
2
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
197 }
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
198 if (end < start || end >= indexSize) {
157
d5268ca7715b Merged branch wrap-data-access into default for resource-friendly data access. Updated API to promote that friendliness to clients (channels, not byte[]). More exceptions
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 53 102
diff changeset
199 throw new IllegalArgumentException(String.format("Bad right range boundary %d in [0..%d]", end, indexSize-1));
2
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
200 }
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
201 // XXX may cache [start .. end] from index with a single read (pre-read)
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
202
242
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
203 ReaderN1 r = new ReaderN1(needData, inspector);
2
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
204 try {
242
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
205 r.start(end - start + 1);
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
206 r.range(start, end);
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
207 } catch (IOException ex) {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
208 throw new HgBadStateException(ex); // FIXME need better handling
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
209 } finally {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
210 r.finish();
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
211 }
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
212 }
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
213
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
214 /**
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
215 * Effective alternative to {@link #iterate(int, int, boolean, Inspector) batch read}, when only few selected
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
216 * revisions are of interest.
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
217 * @param sortedRevisions revisions to walk, in ascending order.
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
218 * @param needData whether inspector needs access to header only
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
219 * @param inspector callback to process entries
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
220 */
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
221 public void iterate(int[] sortedRevisions, boolean needData, Inspector inspector) {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
222 final int indexSize = revisionCount();
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
223 if (indexSize == 0 || sortedRevisions.length == 0) {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
224 return;
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
225 }
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
226 if (sortedRevisions[0] > indexSize || sortedRevisions[sortedRevisions.length - 1] > indexSize) {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
227 throw new IllegalArgumentException(String.format("Can't iterate [%d, %d] in range [0..%d]", sortedRevisions[0], sortedRevisions[sortedRevisions.length - 1], indexSize));
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
228 }
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
229
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
230 ReaderN1 r = new ReaderN1(needData, inspector);
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
231 try {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
232 r.start(sortedRevisions.length);
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
233 for (int i = 0; i < sortedRevisions.length; ) {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
234 int x = i;
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
235 i++;
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
236 while (i < sortedRevisions.length) {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
237 if (sortedRevisions[i] == sortedRevisions[i-1] + 1) {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
238 i++;
2
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
239 } else {
217
e39cf474ef94 Experimental support to mix-in start and end events for inspectors. Additionally, Lifecycle may serve as iteration control
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 202
diff changeset
240 break;
e39cf474ef94 Experimental support to mix-in start and end events for inspectors. Additionally, Lifecycle may serve as iteration control
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 202
diff changeset
241 }
e39cf474ef94 Experimental support to mix-in start and end events for inspectors. Additionally, Lifecycle may serve as iteration control
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 202
diff changeset
242 }
242
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
243 // commitRevisions[x..i-1] are sequential
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
244 if (!r.range(sortedRevisions[x], sortedRevisions[i-1])) {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
245 return;
51
9429c7bd1920 Try DataAccess to reach revision data instead of plain byte arrays
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 49
diff changeset
246 }
2
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
247 }
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
248 } catch (IOException ex) {
158
b413b16d10a5 Integer offsets and file length explictly, rather than casts throughout code. Inflater may benefit from total length hint, but shall calculate it by its own if needed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 157
diff changeset
249 throw new HgBadStateException(ex); // FIXME need better handling
3
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 2
diff changeset
250 } finally {
242
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
251 r.finish();
2
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
252 }
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
253 }
198
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
254
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
255 private int getBaseRevision(int revision) {
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
256 return baseRevisions[revision];
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
257 }
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
258
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
259 /**
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
260 * @return offset of the revision's record in the index (.i) stream
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
261 */
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
262 private int getIndexOffsetInt(int revision) {
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
263 return inline ? indexRecordOffset[revision] : revision * REVLOGV1_RECORD_SIZE;
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
264 }
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
265
2
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
266 private void initOutline() {
198
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
267 if (baseRevisions != null && baseRevisions.length > 0) {
2
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
268 return;
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
269 }
198
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
270 ArrayList<Integer> resBases = new ArrayList<Integer>();
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
271 ArrayList<Integer> resOffsets = new ArrayList<Integer>();
9
d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 6
diff changeset
272 DataAccess da = getIndexStream();
2
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
273 try {
202
706bcc7cfee4 Basic test for HgIncomingCommand. Fix RepositoryComparator for cases when whole repository is unknown. Respect freshly initialized (empty) repositories in general.
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 198
diff changeset
274 if (da.isEmpty()) {
706bcc7cfee4 Basic test for HgIncomingCommand. Fix RepositoryComparator for cases when whole repository is unknown. Respect freshly initialized (empty) repositories in general.
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 198
diff changeset
275 // do not fail with exception if stream is empty, it's likely intentional
706bcc7cfee4 Basic test for HgIncomingCommand. Fix RepositoryComparator for cases when whole repository is unknown. Respect freshly initialized (empty) repositories in general.
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 198
diff changeset
276 baseRevisions = new int[0];
706bcc7cfee4 Basic test for HgIncomingCommand. Fix RepositoryComparator for cases when whole repository is unknown. Respect freshly initialized (empty) repositories in general.
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 198
diff changeset
277 return;
706bcc7cfee4 Basic test for HgIncomingCommand. Fix RepositoryComparator for cases when whole repository is unknown. Respect freshly initialized (empty) repositories in general.
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 198
diff changeset
278 }
9
d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 6
diff changeset
279 int versionField = da.readInt();
170
71ddbf8603e8 Initial clone: populate given directory from a bundle. Everything but remote server access is there, albeit prototype code style
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 158
diff changeset
280 da.readInt(); // just to skip next 4 bytes of offset + flags
2
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
281 final int INLINEDATA = 1 << 16;
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
282 inline = (versionField & INLINEDATA) != 0;
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
283 long offset = 0; // first offset is always 0, thus Hg uses it for other purposes
9
d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 6
diff changeset
284 while(true) {
d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 6
diff changeset
285 int compressedLen = da.readInt();
5
fc265ddeab26 File content and non-effective, although working, patch application
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 4
diff changeset
286 // 8+4 = 12 bytes total read here
49
26e3eeaa3962 branch and user filtering for log operation
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 44
diff changeset
287 @SuppressWarnings("unused")
9
d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 6
diff changeset
288 int actualLen = da.readInt();
d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 6
diff changeset
289 int baseRevision = da.readInt();
5
fc265ddeab26 File content and non-effective, although working, patch application
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 4
diff changeset
290 // 12 + 8 = 20 bytes read here
2
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
291 // int linkRevision = di.readInt();
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
292 // int parent1Revision = di.readInt();
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
293 // int parent2Revision = di.readInt();
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
294 // byte[] nodeid = new byte[32];
198
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
295 resBases.add(baseRevision);
2
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
296 if (inline) {
198
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
297 int o = (int) offset;
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
298 if (o != offset) {
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
299 // just in case, can't happen, ever, unless HG (or some other bad tool) produces index file
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
300 // with inlined data of size greater than 2 Gb.
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
301 throw new HgBadStateException("Data too big, offset didn't fit to sizeof(int)");
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
302 }
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
303 resOffsets.add(o + REVLOGV1_RECORD_SIZE * resOffsets.size());
9
d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 6
diff changeset
304 da.skip(3*4 + 32 + compressedLen); // Check: 44 (skip) + 20 (read) = 64 (total RevlogNG record size)
2
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
305 } else {
9
d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 6
diff changeset
306 da.skip(3*4 + 32);
2
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
307 }
10
382cfe9463db Dirstate parsing. DataAccess refactored to allow reuse and control over constants
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 9
diff changeset
308 if (da.isEmpty()) {
9
d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 6
diff changeset
309 // fine, done then
198
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
310 baseRevisions = toArray(resBases);
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
311 if (inline) {
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
312 indexRecordOffset = toArray(resOffsets);
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
313 }
9
d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 6
diff changeset
314 break;
10
382cfe9463db Dirstate parsing. DataAccess refactored to allow reuse and control over constants
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 9
diff changeset
315 } else {
382cfe9463db Dirstate parsing. DataAccess refactored to allow reuse and control over constants
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 9
diff changeset
316 // start reading next record
382cfe9463db Dirstate parsing. DataAccess refactored to allow reuse and control over constants
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 9
diff changeset
317 long l = da.readLong();
382cfe9463db Dirstate parsing. DataAccess refactored to allow reuse and control over constants
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 9
diff changeset
318 offset = l >>> 16;
9
d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 6
diff changeset
319 }
2
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
320 }
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
321 } catch (IOException ex) {
9
d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 6
diff changeset
322 ex.printStackTrace(); // log error
198
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
323 // too bad, no outline then, but don't fail with NPE
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
324 baseRevisions = new int[0];
9
d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 6
diff changeset
325 } finally {
d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 6
diff changeset
326 da.done();
2
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
327 }
3
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 2
diff changeset
328 }
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 2
diff changeset
329
242
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
330 /**
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
331 * operation with single file open/close and multiple diverse reads.
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
332 * XXX initOutline might need similar extraction to keen N1 format knowledge
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
333 */
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
334 class ReaderN1 {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
335 private final Inspector inspector;
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
336 private final boolean needData;
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
337 private DataAccess daIndex = null, daData = null;
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
338 private Lifecycle.BasicCallback cb = null;
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
339 private int lastRevisionRead = BAD_REVISION;
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
340 private DataAccess lastUserData;
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
341
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
342 public ReaderN1(boolean needData, Inspector insp) {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
343 assert insp != null;
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
344 this.needData = needData;
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
345 inspector = insp;
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
346 }
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
347
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
348 public void start(int totalWork) {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
349 daIndex = getIndexStream();
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
350 if (needData && !inline) {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
351 daData = getDataStream();
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
352 }
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
353 if (inspector instanceof Lifecycle) {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
354 cb = new Lifecycle.BasicCallback();
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
355 ((Lifecycle) inspector).start(totalWork, cb, cb);
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
356 }
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
357 }
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
358
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
359 public void finish() {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
360 if (lastUserData != null) {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
361 lastUserData.done();
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
362 lastUserData = null;
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
363 }
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
364 if (inspector instanceof Lifecycle) {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
365 ((Lifecycle) inspector).finish(cb);
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
366 }
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
367 daIndex.done();
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
368 if (daData != null) {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
369 daData.done();
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
370 }
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
371 }
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
372
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
373 public boolean range(int start, int end) throws IOException {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
374 byte[] nodeidBuf = new byte[20];
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
375 int i;
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
376 boolean extraReadsToBaseRev = false; // to indicate we read revision prior to start. XXX not sure can't do without
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
377 // it (i.e. replace with i >= start)
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
378 if (needData && (i = getBaseRevision(start)) < start) {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
379 // if lastRevisionRead in [baseRevision(start), start) can reuse lastUserData
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
380 // doesn't make sense to reuse if lastRevisionRead == start (too much to change in the cycle below).
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
381 if (lastRevisionRead != BAD_REVISION && i <= lastRevisionRead && lastRevisionRead < start) {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
382 i = lastRevisionRead + 1; // start with first not-yet-read revision
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
383 extraReadsToBaseRev = i < start;
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
384 } else {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
385 if (lastUserData != null) {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
386 lastUserData.done();
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
387 lastUserData = null;
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
388 }
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
389 extraReadsToBaseRev = true;
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
390 }
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
391 } else {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
392 // don't need to clean lastUserData as it's always null when !needData
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
393 i = start;
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
394 }
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
395
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
396 daIndex.seek(getIndexOffsetInt(i));
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
397
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
398 for (; i <= end; i++ ) {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
399 if (inline && needData) {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
400 // inspector reading data (though FilterDataAccess) may have affected index position
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
401 daIndex.seek(getIndexOffsetInt(i));
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
402 }
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
403 long l = daIndex.readLong(); // 0
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
404 long offset = i == 0 ? 0 : (l >>> 16);
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
405 @SuppressWarnings("unused")
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
406 int flags = (int) (l & 0X0FFFF);
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
407 int compressedLen = daIndex.readInt(); // +8
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
408 int actualLen = daIndex.readInt(); // +12
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
409 int baseRevision = daIndex.readInt(); // +16
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
410 int linkRevision = daIndex.readInt(); // +20
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
411 int parent1Revision = daIndex.readInt();
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
412 int parent2Revision = daIndex.readInt();
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
413 // Hg has 32 bytes here, uses 20 for nodeid, and keeps 12 last bytes empty
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
414 daIndex.readBytes(nodeidBuf, 0, 20); // +32
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
415 daIndex.skip(12);
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
416 DataAccess userDataAccess = null;
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
417 if (needData) {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
418 int streamOffset;
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
419 DataAccess streamDataAccess;
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
420 if (inline) {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
421 streamDataAccess = daIndex;
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
422 streamOffset = getIndexOffsetInt(i) + REVLOGV1_RECORD_SIZE; // don't need to do seek as it's actual position in the index stream
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
423 } else {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
424 streamOffset = (int) offset;
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
425 streamDataAccess = daData;
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
426 daData.seek(streamOffset);
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
427 }
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
428 final boolean patchToPrevious = baseRevision != i; // the only way I found to tell if it's a patch
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
429 if (streamDataAccess.isEmpty()) {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
430 userDataAccess = new DataAccess(); // empty
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
431 } else {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
432 final byte firstByte = streamDataAccess.readByte();
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
433 if (firstByte == 0x78 /* 'x' */) {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
434 userDataAccess = new InflaterDataAccess(streamDataAccess, streamOffset, compressedLen, patchToPrevious ? -1 : actualLen);
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
435 } else if (firstByte == 0x75 /* 'u' */) {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
436 userDataAccess = new FilterDataAccess(streamDataAccess, streamOffset+1, compressedLen-1);
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
437 } else {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
438 // XXX Python impl in fact throws exception when there's not 'x', 'u' or '0'
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
439 // but I don't see reason not to return data as is
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
440 userDataAccess = new FilterDataAccess(streamDataAccess, streamOffset, compressedLen);
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
441 }
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
442 }
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
443 // XXX
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
444 if (patchToPrevious) {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
445 // this is a patch
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
446 LinkedList<PatchRecord> patches = new LinkedList<PatchRecord>();
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
447 while (!userDataAccess.isEmpty()) {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
448 PatchRecord pr = PatchRecord.read(userDataAccess);
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
449 // System.out.printf("PatchRecord:%d %d %d\n", pr.start, pr.end, pr.len);
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
450 patches.add(pr);
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
451 }
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
452 userDataAccess.done();
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
453 //
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
454 byte[] userData = apply(lastUserData, actualLen, patches);
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
455 userDataAccess = new ByteArrayDataAccess(userData);
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
456 }
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
457 } else {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
458 if (inline) {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
459 daIndex.skip(compressedLen);
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
460 }
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
461 }
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
462 if (!extraReadsToBaseRev || i >= start) {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
463 inspector.next(i, actualLen, baseRevision, linkRevision, parent1Revision, parent2Revision, nodeidBuf, userDataAccess);
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
464 }
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
465 if (cb != null) {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
466 if (cb.isStopped()) {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
467 return false;
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
468 }
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
469 }
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
470 if (userDataAccess != null) {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
471 userDataAccess.reset();
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
472 if (lastUserData != null) {
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
473 lastUserData.done();
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
474 }
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
475 lastUserData = userDataAccess;
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
476 }
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
477 }
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
478 lastRevisionRead = end;
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
479 return true;
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
480 }
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
481 }
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
482
ad6a046943be Improved reading of sparse revisions from a revlog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 223
diff changeset
483
198
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
484 private static int[] toArray(List<Integer> l) {
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
485 int[] rv = new int[l.size()];
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
486 for (int i = 0; i < rv.length; i++) {
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
487 rv[i] = l.get(i);
2
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
488 }
198
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
489 return rv;
2
08db726a0fb7 Shaping out low-level Hg structures
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 0
diff changeset
490 }
198
33a7d76f067b Performance optimization: reduce memory to keep revlog cached info
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 170
diff changeset
491
3
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 2
diff changeset
492
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 2
diff changeset
493 // mpatch.c : apply()
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 2
diff changeset
494 // FIXME need to implement patch merge (fold, combine, gather and discard from aforementioned mpatch.[c|py]), also see Revlog and Mercurial PDF
157
d5268ca7715b Merged branch wrap-data-access into default for resource-friendly data access. Updated API to promote that friendliness to clients (channels, not byte[]). More exceptions
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 53 102
diff changeset
495 public/*for HgBundle; until moved to better place*/static byte[] apply(DataAccess baseRevisionContent, int outcomeLen, List<PatchRecord> patch) throws IOException {
3
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 2
diff changeset
496 int last = 0, destIndex = 0;
43
1b26247d7367 Calculate result length of the patch operarion, when unknown
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 37
diff changeset
497 if (outcomeLen == -1) {
158
b413b16d10a5 Integer offsets and file length explictly, rather than casts throughout code. Inflater may benefit from total length hint, but shall calculate it by its own if needed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 157
diff changeset
498 outcomeLen = baseRevisionContent.length();
43
1b26247d7367 Calculate result length of the patch operarion, when unknown
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 37
diff changeset
499 for (PatchRecord pr : patch) {
1b26247d7367 Calculate result length of the patch operarion, when unknown
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 37
diff changeset
500 outcomeLen += pr.start - last + pr.len;
1b26247d7367 Calculate result length of the patch operarion, when unknown
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 37
diff changeset
501 last = pr.end;
1b26247d7367 Calculate result length of the patch operarion, when unknown
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 37
diff changeset
502 }
1b26247d7367 Calculate result length of the patch operarion, when unknown
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 37
diff changeset
503 outcomeLen -= last;
1b26247d7367 Calculate result length of the patch operarion, when unknown
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 37
diff changeset
504 last = 0;
1b26247d7367 Calculate result length of the patch operarion, when unknown
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 37
diff changeset
505 }
1b26247d7367 Calculate result length of the patch operarion, when unknown
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 37
diff changeset
506 byte[] rv = new byte[outcomeLen];
3
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 2
diff changeset
507 for (PatchRecord pr : patch) {
51
9429c7bd1920 Try DataAccess to reach revision data instead of plain byte arrays
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 49
diff changeset
508 baseRevisionContent.seek(last);
9429c7bd1920 Try DataAccess to reach revision data instead of plain byte arrays
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 49
diff changeset
509 baseRevisionContent.readBytes(rv, destIndex, pr.start-last);
3
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 2
diff changeset
510 destIndex += pr.start - last;
43
1b26247d7367 Calculate result length of the patch operarion, when unknown
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 37
diff changeset
511 System.arraycopy(pr.data, 0, rv, destIndex, pr.data.length);
3
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 2
diff changeset
512 destIndex += pr.data.length;
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 2
diff changeset
513 last = pr.end;
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 2
diff changeset
514 }
51
9429c7bd1920 Try DataAccess to reach revision data instead of plain byte arrays
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 49
diff changeset
515 baseRevisionContent.seek(last);
9429c7bd1920 Try DataAccess to reach revision data instead of plain byte arrays
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 49
diff changeset
516 baseRevisionContent.readBytes(rv, destIndex, (int) (baseRevisionContent.length() - last));
3
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 2
diff changeset
517 return rv;
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 2
diff changeset
518 }
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 2
diff changeset
519
35
6061aa826a9e Complete parsing of the bundle format
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 33
diff changeset
520 // @see http://mercurial.selenic.com/wiki/BundleFormat, in Changelog group description
77
c677e1593919 Moved RevlogStream implementation into .internal
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 74
diff changeset
521 public static class PatchRecord {
52
30bd38978846 brief explanation of patch record
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 49
diff changeset
522 /*
30bd38978846 brief explanation of patch record
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 49
diff changeset
523 Given there are pr1 and pr2:
30bd38978846 brief explanation of patch record
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 49
diff changeset
524 pr1.start to pr1.end will be replaced with pr's data (of pr1.len)
30bd38978846 brief explanation of patch record
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 49
diff changeset
525 pr1.end to pr2.start gets copied from base
30bd38978846 brief explanation of patch record
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 49
diff changeset
526 */
77
c677e1593919 Moved RevlogStream implementation into .internal
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 74
diff changeset
527 public int start, end, len;
c677e1593919 Moved RevlogStream implementation into .internal
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 74
diff changeset
528 public byte[] data;
3
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 2
diff changeset
529
36
205f9b59b400 Strip parsing logic out from console frontend
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 35
diff changeset
530 // TODO consider PatchRecord that only records data position (absolute in data source), and acquires data as needed
205f9b59b400 Strip parsing logic out from console frontend
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 35
diff changeset
531 private PatchRecord(int p1, int p2, int length, byte[] src) {
205f9b59b400 Strip parsing logic out from console frontend
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 35
diff changeset
532 start = p1;
205f9b59b400 Strip parsing logic out from console frontend
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 35
diff changeset
533 end = p2;
205f9b59b400 Strip parsing logic out from console frontend
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 35
diff changeset
534 len = length;
205f9b59b400 Strip parsing logic out from console frontend
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 35
diff changeset
535 data = src;
3
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 2
diff changeset
536 }
36
205f9b59b400 Strip parsing logic out from console frontend
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 35
diff changeset
537
205f9b59b400 Strip parsing logic out from console frontend
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 35
diff changeset
538 /*package-local*/ static PatchRecord read(byte[] data, int offset) {
205f9b59b400 Strip parsing logic out from console frontend
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 35
diff changeset
539 final int x = offset; // shorthand
205f9b59b400 Strip parsing logic out from console frontend
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 35
diff changeset
540 int p1 = ((data[x] & 0xFF)<< 24) | ((data[x+1] & 0xFF) << 16) | ((data[x+2] & 0xFF) << 8) | (data[x+3] & 0xFF);
205f9b59b400 Strip parsing logic out from console frontend
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 35
diff changeset
541 int p2 = ((data[x+4] & 0xFF) << 24) | ((data[x+5] & 0xFF) << 16) | ((data[x+6] & 0xFF) << 8) | (data[x+7] & 0xFF);
205f9b59b400 Strip parsing logic out from console frontend
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 35
diff changeset
542 int len = ((data[x+8] & 0xFF) << 24) | ((data[x+9] & 0xFF) << 16) | ((data[x+10] & 0xFF) << 8) | (data[x+11] & 0xFF);
205f9b59b400 Strip parsing logic out from console frontend
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 35
diff changeset
543 byte[] dataCopy = new byte[len];
205f9b59b400 Strip parsing logic out from console frontend
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 35
diff changeset
544 System.arraycopy(data, x+12, dataCopy, 0, len);
205f9b59b400 Strip parsing logic out from console frontend
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 35
diff changeset
545 return new PatchRecord(p1, p2, len, dataCopy);
205f9b59b400 Strip parsing logic out from console frontend
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 35
diff changeset
546 }
205f9b59b400 Strip parsing logic out from console frontend
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 35
diff changeset
547
77
c677e1593919 Moved RevlogStream implementation into .internal
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 74
diff changeset
548 public /*for HgBundle*/ static PatchRecord read(DataAccess da) throws IOException {
36
205f9b59b400 Strip parsing logic out from console frontend
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 35
diff changeset
549 int p1 = da.readInt();
205f9b59b400 Strip parsing logic out from console frontend
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 35
diff changeset
550 int p2 = da.readInt();
205f9b59b400 Strip parsing logic out from console frontend
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 35
diff changeset
551 int len = da.readInt();
205f9b59b400 Strip parsing logic out from console frontend
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 35
diff changeset
552 byte[] src = new byte[len];
205f9b59b400 Strip parsing logic out from console frontend
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 35
diff changeset
553 da.readBytes(src, 0, len);
205f9b59b400 Strip parsing logic out from console frontend
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 35
diff changeset
554 return new PatchRecord(p1, p2, len, src);
205f9b59b400 Strip parsing logic out from console frontend
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 35
diff changeset
555 }
77
c677e1593919 Moved RevlogStream implementation into .internal
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 74
diff changeset
556 }
c677e1593919 Moved RevlogStream implementation into .internal
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 74
diff changeset
557
c677e1593919 Moved RevlogStream implementation into .internal
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 74
diff changeset
558 // FIXME byte[] data might be too expensive, for few usecases it may be better to have intermediate Access object (when we don't need full data
c677e1593919 Moved RevlogStream implementation into .internal
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 74
diff changeset
559 // instantly - e.g. calculate hash, or comparing two revisions
c677e1593919 Moved RevlogStream implementation into .internal
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 74
diff changeset
560 public interface Inspector {
c677e1593919 Moved RevlogStream implementation into .internal
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 74
diff changeset
561 // XXX boolean retVal to indicate whether to continue?
157
d5268ca7715b Merged branch wrap-data-access into default for resource-friendly data access. Updated API to promote that friendliness to clients (channels, not byte[]). More exceptions
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 53 102
diff changeset
562 // TODO specify nodeid and data length, and reuse policy (i.e. if revlog stream doesn't reuse nodeid[] for each call)
d5268ca7715b Merged branch wrap-data-access into default for resource-friendly data access. Updated API to promote that friendliness to clients (channels, not byte[]). More exceptions
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 53 102
diff changeset
563 // implementers shall not invoke DataAccess.done(), it's accomplished by #iterate at appropraite moment
d5268ca7715b Merged branch wrap-data-access into default for resource-friendly data access. Updated API to promote that friendliness to clients (channels, not byte[]). More exceptions
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 53 102
diff changeset
564 void next(int revisionNumber, int actualLen, int baseRevision, int linkRevision, int parent1Revision, int parent2Revision, byte[/*20*/] nodeid, DataAccess data);
3
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 2
diff changeset
565 }
0
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
566 }