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comparison src/org/tmatesoft/hg/repo/CommitFacility.java @ 538:dd4f6311af52

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Commit: first working version
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Tue, 05 Feb 2013 22:30:21 +0100
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children 9edfd5a223b8
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537:5a455624be4f 538:dd4f6311af52
1 /*
2 * Copyright (c) 2013 TMate Software Ltd
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 2 of the License.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * For information on how to redistribute this software under
14 * the terms of a license other than GNU General Public License
15 * contact TMate Software at support@hg4j.com
16 */
17 package org.tmatesoft.hg.repo;
18
19 import static org.tmatesoft.hg.repo.HgRepository.NO_REVISION;
20
21 import java.nio.ByteBuffer;
22 import java.util.HashMap;
23 import java.util.LinkedHashMap;
24 import java.util.Map;
25 import java.util.TreeMap;
26
27 import org.tmatesoft.hg.core.HgRepositoryLockException;
28 import org.tmatesoft.hg.core.Nodeid;
29 import org.tmatesoft.hg.internal.ByteArrayChannel;
30 import org.tmatesoft.hg.internal.ChangelogEntryBuilder;
31 import org.tmatesoft.hg.internal.Experimental;
32 import org.tmatesoft.hg.internal.ManifestEntryBuilder;
33 import org.tmatesoft.hg.internal.ManifestRevision;
34 import org.tmatesoft.hg.internal.RevlogStreamWriter;
35 import org.tmatesoft.hg.util.Pair;
36 import org.tmatesoft.hg.util.Path;
37
38 /**
39 * WORK IN PROGRESS
40 *
41 * @author Artem Tikhomirov
42 * @author TMate Software Ltd.
43 */
44 @Experimental(reason="Work in progress")
45 public class CommitFacility {
46 private final HgRepository repo;
47 private final int p1Commit, p2Commit;
48 private Map<Path, Pair<HgDataFile, ByteDataSupplier>> files = new LinkedHashMap<Path, Pair<HgDataFile, ByteDataSupplier>>();
49
50
51 public CommitFacility(HgRepository hgRepo, int parentCommit) {
52 this(hgRepo, parentCommit, NO_REVISION);
53 }
54
55 public CommitFacility(HgRepository hgRepo, int parent1Commit, int parent2Commit) {
56 repo = hgRepo;
57 p1Commit = parent1Commit;
58 p2Commit = parent2Commit;
59 if (parent1Commit != NO_REVISION && parent1Commit == parent2Commit) {
60 throw new IllegalArgumentException("Merging same revision is dubious");
61 }
62 }
63
64 public boolean isMerge() {
65 return p1Commit != NO_REVISION && p2Commit != NO_REVISION;
66 }
67
68 public void add(HgDataFile dataFile, ByteDataSupplier content) {
69 files.put(dataFile.getPath(), new Pair<HgDataFile, ByteDataSupplier>(dataFile, content));
70 }
71
72 public Nodeid commit(String message) throws HgRepositoryLockException {
73
74 final HgChangelog clog = repo.getChangelog();
75 final int clogRevisionIndex = clog.getRevisionCount();
76 ManifestRevision c1Manifest = new ManifestRevision(null, null);
77 ManifestRevision c2Manifest = new ManifestRevision(null, null);
78 if (p1Commit != NO_REVISION) {
79 repo.getManifest().walk(p1Commit, p1Commit, c1Manifest);
80 }
81 if (p2Commit != NO_REVISION) {
82 repo.getManifest().walk(p2Commit, p2Commit, c2Manifest);
83 }
84 // Pair<Integer, Integer> manifestParents = getManifestParents();
85 Pair<Integer, Integer> manifestParents = new Pair<Integer, Integer>(c1Manifest.revisionIndex(), c2Manifest.revisionIndex());
86 TreeMap<Path, Nodeid> newManifestRevision = new TreeMap<Path, Nodeid>();
87 HashMap<Path, Pair<Integer, Integer>> fileParents = new HashMap<Path, Pair<Integer,Integer>>();
88 for (Path f : c1Manifest.files()) {
89 HgDataFile df = repo.getFileNode(f);
90 Nodeid fileKnownRev = c1Manifest.nodeid(f);
91 int fileRevIndex = df.getRevisionIndex(fileKnownRev);
92 // FIXME merged files?!
93 fileParents.put(f, new Pair<Integer, Integer>(fileRevIndex, NO_REVISION));
94 newManifestRevision.put(f, fileKnownRev);
95 }
96 //
97 // Files
98 for (Pair<HgDataFile, ByteDataSupplier> e : files.values()) {
99 HgDataFile df = e.first();
100 Pair<Integer, Integer> fp = fileParents.get(df.getPath());
101 if (fp == null) {
102 // NEW FILE
103 fp = new Pair<Integer, Integer>(NO_REVISION, NO_REVISION);
104 }
105 ByteDataSupplier bds = e.second();
106 // FIXME quickfix, instead, pass ByteDataSupplier directly to RevlogStreamWriter
107 ByteBuffer bb = ByteBuffer.allocate(2048);
108 ByteArrayChannel bac = new ByteArrayChannel();
109 while (bds.read(bb) != -1) {
110 bb.flip();
111 bac.write(bb);
112 bb.clear();
113 }
114 RevlogStreamWriter fileWriter = new RevlogStreamWriter(repo.getSessionContext(), df.content);
115 Nodeid fileRev = fileWriter.addRevision(bac.toArray(), clogRevisionIndex, fp.first(), fp.second());
116 newManifestRevision.put(df.getPath(), fileRev);
117 }
118 //
119 // Manifest
120 final ManifestEntryBuilder manifestBuilder = new ManifestEntryBuilder();
121 for (Map.Entry<Path, Nodeid> me : newManifestRevision.entrySet()) {
122 manifestBuilder.add(me.getKey().toString(), me.getValue());
123 }
124 RevlogStreamWriter manifestWriter = new RevlogStreamWriter(repo.getSessionContext(), repo.getManifest().content);
125 Nodeid manifestRev = manifestWriter.addRevision(manifestBuilder.build(), clogRevisionIndex, manifestParents.first(), manifestParents.second());
126 //
127 // Changelog
128 final ChangelogEntryBuilder changelogBuilder = new ChangelogEntryBuilder();
129 changelogBuilder.setModified(files.keySet());
130 byte[] clogContent = changelogBuilder.build(manifestRev, message);
131 RevlogStreamWriter changelogWriter = new RevlogStreamWriter(repo.getSessionContext(), clog.content);
132 Nodeid changesetRev = changelogWriter.addRevision(clogContent, clogRevisionIndex, p1Commit, p2Commit);
133 return changesetRev;
134 }
135 /*
136 private Pair<Integer, Integer> getManifestParents() {
137 return new Pair<Integer, Integer>(extractManifestRevisionIndex(p1Commit), extractManifestRevisionIndex(p2Commit));
138 }
139
140 private int extractManifestRevisionIndex(int clogRevIndex) {
141 if (clogRevIndex == NO_REVISION) {
142 return NO_REVISION;
143 }
144 RawChangeset commitObject = repo.getChangelog().range(clogRevIndex, clogRevIndex).get(0);
145 Nodeid manifestRev = commitObject.manifest();
146 if (manifestRev.isNull()) {
147 return NO_REVISION;
148 }
149 return repo.getManifest().getRevisionIndex(manifestRev);
150 }
151 */
152
153 // unlike DataAccess (which provides structured access), this one
154 // deals with a sequence of bytes, when there's no need in structure of the data
155 public interface ByteDataSupplier { // TODO look if can resolve DataAccess in HgCloneCommand visibility issue
156 int read(ByteBuffer buf);
157 }
158
159 public interface ByteDataConsumer {
160 void write(ByteBuffer buf);
161 }
162 }