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annotate src/org/tmatesoft/hg/internal/CommitFacility.java @ 618:7c0d2ce340b8

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Refactor approach how content finds it way down to a commit revision
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 16 May 2013 19:46:13 +0200
parents 65c01508f002
children 868b2ffdcd5c
rev   line source
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1 /*
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2 * Copyright (c) 2013 TMate Software Ltd
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3 *
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4 * This program is free software; you can redistribute it and/or modify
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5 * it under the terms of the GNU General Public License as published by
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6 * the Free Software Foundation; version 2 of the License.
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7 *
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8 * This program is distributed in the hope that it will be useful,
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9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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11 * GNU General Public License for more details.
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12 *
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13 * For information on how to redistribute this software under
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14 * the terms of a license other than GNU General Public License
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15 * contact TMate Software at support@hg4j.com
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16 */
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17 package org.tmatesoft.hg.internal;
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18
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19 import static org.tmatesoft.hg.repo.HgRepository.DEFAULT_BRANCH_NAME;
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20 import static org.tmatesoft.hg.repo.HgRepository.NO_REVISION;
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21 import static org.tmatesoft.hg.repo.HgRepositoryFiles.Branch;
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22 import static org.tmatesoft.hg.repo.HgRepositoryFiles.UndoBranch;
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23 import static org.tmatesoft.hg.util.LogFacility.Severity.Error;
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24
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25 import java.io.File;
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26 import java.io.FileOutputStream;
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27 import java.io.IOException;
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28 import java.util.ArrayList;
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29 import java.util.HashMap;
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30 import java.util.LinkedHashMap;
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31 import java.util.Map;
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32 import java.util.Set;
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33 import java.util.TreeMap;
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34 import java.util.TreeSet;
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35
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36 import org.tmatesoft.hg.core.HgCommitCommand;
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37 import org.tmatesoft.hg.core.HgIOException;
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38 import org.tmatesoft.hg.core.HgRepositoryLockException;
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39 import org.tmatesoft.hg.core.Nodeid;
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40 import org.tmatesoft.hg.internal.DataSerializer.DataSource;
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41 import org.tmatesoft.hg.repo.HgChangelog;
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42 import org.tmatesoft.hg.repo.HgDataFile;
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43 import org.tmatesoft.hg.util.Pair;
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44 import org.tmatesoft.hg.util.Path;
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45
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46 /**
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47 * Name: CommitObject, FutureCommit or PendingCommit
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48 * The only public API now: {@link HgCommitCommand}.
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49 *
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50 * @author Artem Tikhomirov
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51 * @author TMate Software Ltd.
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52 */
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53 public final class CommitFacility {
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54 private final Internals repo;
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55 private final int p1Commit, p2Commit;
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56 private Map<Path, Pair<HgDataFile, DataSource>> files = new LinkedHashMap<Path, Pair<HgDataFile, DataSource>>();
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57 private Set<Path> removals = new TreeSet<Path>();
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58 private String branch, user;
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59
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60 public CommitFacility(Internals hgRepo, int parentCommit) {
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61 this(hgRepo, parentCommit, NO_REVISION);
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62 }
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63
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64 public CommitFacility(Internals hgRepo, int parent1Commit, int parent2Commit) {
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65 repo = hgRepo;
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66 p1Commit = parent1Commit;
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67 p2Commit = parent2Commit;
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68 if (parent1Commit != NO_REVISION && parent1Commit == parent2Commit) {
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69 throw new IllegalArgumentException("Merging same revision is dubious");
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70 }
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71 }
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72
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73 public boolean isMerge() {
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74 return p1Commit != NO_REVISION && p2Commit != NO_REVISION;
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75 }
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76
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77 public void add(HgDataFile dataFile, DataSource content) {
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78 if (content == null) {
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79 throw new IllegalArgumentException();
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80 }
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81 removals.remove(dataFile.getPath());
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82 files.put(dataFile.getPath(), new Pair<HgDataFile, DataSource>(dataFile, content));
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83 }
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84
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85 public void forget(HgDataFile dataFile) {
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86 files.remove(dataFile.getPath());
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87 removals.add(dataFile.getPath());
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88 }
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89
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90 public void branch(String branchName) {
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91 branch = branchName;
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92 }
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93
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94 public void user(String userName) {
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95 user = userName;
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96 }
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97
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98 // this method doesn't roll transaction back in case of failure, caller's responsibility
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99 // this method expects repository to be locked, if needed
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100 public Nodeid commit(String message, Transaction transaction) throws HgIOException, HgRepositoryLockException {
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101 final HgChangelog clog = repo.getRepo().getChangelog();
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102 final int clogRevisionIndex = clog.getRevisionCount();
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103 ManifestRevision c1Manifest = new ManifestRevision(null, null);
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104 ManifestRevision c2Manifest = new ManifestRevision(null, null);
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105 final Nodeid p1Cset = p1Commit == NO_REVISION ? null : clog.getRevision(p1Commit);
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106 final Nodeid p2Cset = p2Commit == NO_REVISION ? null : clog.getRevision(p2Commit);
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107 if (p1Commit != NO_REVISION) {
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108 repo.getRepo().getManifest().walk(p1Commit, p1Commit, c1Manifest);
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109 }
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110 if (p2Commit != NO_REVISION) {
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111 repo.getRepo().getManifest().walk(p2Commit, p2Commit, c2Manifest);
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112 }
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113 // Pair<Integer, Integer> manifestParents = getManifestParents();
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114 Pair<Integer, Integer> manifestParents = new Pair<Integer, Integer>(c1Manifest.revisionIndex(), c2Manifest.revisionIndex());
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115 TreeMap<Path, Nodeid> newManifestRevision = new TreeMap<Path, Nodeid>();
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116 HashMap<Path, Pair<Integer, Integer>> fileParents = new HashMap<Path, Pair<Integer,Integer>>();
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117 for (Path f : c1Manifest.files()) {
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118 HgDataFile df = repo.getRepo().getFileNode(f);
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119 Nodeid fileKnownRev1 = c1Manifest.nodeid(f), fileKnownRev2;
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120 final int fileRevIndex1 = df.getRevisionIndex(fileKnownRev1);
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121 final int fileRevIndex2;
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122 if ((fileKnownRev2 = c2Manifest.nodeid(f)) != null) {
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123 // merged files
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124 fileRevIndex2 = df.getRevisionIndex(fileKnownRev2);
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125 } else {
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126 fileRevIndex2 = NO_REVISION;
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127 }
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128
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129 fileParents.put(f, new Pair<Integer, Integer>(fileRevIndex1, fileRevIndex2));
559
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130 newManifestRevision.put(f, fileKnownRev1);
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131 }
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132 //
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133 // Forget removed
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134 for (Path p : removals) {
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135 newManifestRevision.remove(p);
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136 }
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137 //
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138 // Register new/changed
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139 LinkedHashMap<Path, RevlogStream> newlyAddedFiles = new LinkedHashMap<Path, RevlogStream>();
588
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140 ArrayList<Path> touchInDirstate = new ArrayList<Path>();
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141 for (Pair<HgDataFile, DataSource> e : files.values()) {
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142 HgDataFile df = e.first();
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143 DataSource bds = e.second();
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144 Pair<Integer, Integer> fp = fileParents.get(df.getPath());
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145 if (fp == null) {
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146 // NEW FILE
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147 fp = new Pair<Integer, Integer>(NO_REVISION, NO_REVISION);
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148 }
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149 RevlogStream contentStream;
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150 if (df.exists()) {
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151 contentStream = repo.getImplAccess().getStream(df);
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152 } else {
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153 contentStream = repo.createStoreFile(df.getPath());
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154 newlyAddedFiles.put(df.getPath(), contentStream);
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155 // FIXME df doesn't get df.content updated, and clients
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156 // that would attempt to access newly added file after commit would fail
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157 // (despite the fact the file is in there)
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158 }
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159 RevlogStreamWriter fileWriter = new RevlogStreamWriter(repo, contentStream, transaction);
618
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160 Nodeid fileRev = fileWriter.addRevision(bds, clogRevisionIndex, fp.first(), fp.second());
538
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161 newManifestRevision.put(df.getPath(), fileRev);
588
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162 touchInDirstate.add(df.getPath());
538
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163 }
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164 //
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165 // Manifest
618
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166 final ManifestEntryBuilder manifestBuilder = new ManifestEntryBuilder(repo.buildFileNameEncodingHelper());
538
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167 for (Map.Entry<Path, Nodeid> me : newManifestRevision.entrySet()) {
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168 manifestBuilder.add(me.getKey().toString(), me.getValue());
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169 }
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170 RevlogStreamWriter manifestWriter = new RevlogStreamWriter(repo, repo.getImplAccess().getManifestStream(), transaction);
618
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171 Nodeid manifestRev = manifestWriter.addRevision(manifestBuilder, clogRevisionIndex, manifestParents.first(), manifestParents.second());
538
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172 //
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173 // Changelog
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174 final ChangelogEntryBuilder changelogBuilder = new ChangelogEntryBuilder();
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175 changelogBuilder.setModified(files.keySet());
612
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176 changelogBuilder.branch(branch == null ? DEFAULT_BRANCH_NAME : branch);
586
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177 changelogBuilder.user(String.valueOf(user));
618
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178 changelogBuilder.manifest(manifestRev).comment(message);
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179 RevlogStreamWriter changelogWriter = new RevlogStreamWriter(repo, repo.getImplAccess().getChangelogStream(), transaction);
618
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180 Nodeid changesetRev = changelogWriter.addRevision(changelogBuilder, clogRevisionIndex, p1Commit, p2Commit);
616
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181 // TODO move fncache update to an external facility, along with dirstate and bookmark update
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182 if (!newlyAddedFiles.isEmpty() && repo.fncacheInUse()) {
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183 FNCacheFile fncache = new FNCacheFile(repo);
616
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184 for (Path p : newlyAddedFiles.keySet()) {
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185 fncache.addIndex(p);
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186 if (!newlyAddedFiles.get(p).isInlineData()) {
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187 fncache.addData(p);
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188 }
539
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189 }
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190 try {
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191 fncache.write();
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192 } catch (IOException ex) {
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193 // see comment above for fnchache.read()
612
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194 repo.getLog().dump(getClass(), Error, ex, "Failed to write fncache, error ignored");
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195 }
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196 }
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197 String oldBranchValue = DirstateReader.readBranch(repo);
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198 String newBranchValue = branch == null ? DEFAULT_BRANCH_NAME : branch;
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199 // TODO undo.dirstate and undo.branch as described in http://mercurial.selenic.com/wiki/FileFormats#undo..2A
612
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200 if (!oldBranchValue.equals(newBranchValue)) {
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201 File branchFile = transaction.prepare(repo.getRepositoryFile(Branch), repo.getRepositoryFile(UndoBranch));
612
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202 FileOutputStream fos = null;
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diff changeset
203 try {
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204 fos = new FileOutputStream(branchFile);
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diff changeset
205 fos.write(newBranchValue.getBytes(EncodingHelper.getUTF8()));
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206 fos.flush();
617
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207 fos.close();
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208 fos = null;
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209 transaction.done(branchFile);
612
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diff changeset
210 } catch (IOException ex) {
617
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211 transaction.failure(branchFile, ex);
612
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diff changeset
212 repo.getLog().dump(getClass(), Error, ex, "Failed to write branch information, error ignored");
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213 } finally {
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diff changeset
214 try {
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215 if (fos != null) {
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216 fos.close();
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217 }
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diff changeset
218 } catch (IOException ex) {
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diff changeset
219 repo.getLog().dump(getClass(), Error, ex, null);
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diff changeset
220 }
539
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221 }
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222 }
617
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diff changeset
223 // bring dirstate up to commit state, TODO share this code with HgAddRemoveCommand
591
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224 final DirstateBuilder dirstateBuilder = new DirstateBuilder(repo);
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225 dirstateBuilder.fillFrom(new DirstateReader(repo, new Path.SimpleSource()));
588
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diff changeset
226 for (Path p : removals) {
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diff changeset
227 dirstateBuilder.recordRemoved(p);
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diff changeset
228 }
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diff changeset
229 for (Path p : touchInDirstate) {
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diff changeset
230 dirstateBuilder.recordUncertain(p);
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diff changeset
231 }
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diff changeset
232 dirstateBuilder.parents(changesetRev, Nodeid.NULL);
617
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diff changeset
233 dirstateBuilder.serialize(transaction);
605
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diff changeset
234 // update bookmarks
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diff changeset
235 if (p1Commit != NO_REVISION || p2Commit != NO_REVISION) {
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diff changeset
236 repo.getRepo().getBookmarks().updateActive(p1Cset, p2Cset, changesetRev);
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diff changeset
237 }
610
5c68567b3645 Refresh tags, branches, bookmarks and ignore when their files (or csets in the repo) are changed
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parents: 607
diff changeset
238 // TODO Revisit: might be reasonable to send out a "Repo changed" notification, to clear
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parents: 607
diff changeset
239 // e.g. cached branch, tags and so on, not to rely on file change detection methods?
616
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diff changeset
240 // The same notification might come useful once Pull is implemented
538
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diff changeset
241 return changesetRev;
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242 }
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243 /*
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244 private Pair<Integer, Integer> getManifestParents() {
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245 return new Pair<Integer, Integer>(extractManifestRevisionIndex(p1Commit), extractManifestRevisionIndex(p2Commit));
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246 }
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247
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248 private int extractManifestRevisionIndex(int clogRevIndex) {
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249 if (clogRevIndex == NO_REVISION) {
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250 return NO_REVISION;
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251 }
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252 RawChangeset commitObject = repo.getChangelog().range(clogRevIndex, clogRevIndex).get(0);
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253 Nodeid manifestRev = commitObject.manifest();
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254 if (manifestRev.isNull()) {
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255 return NO_REVISION;
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256 }
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257 return repo.getManifest().getRevisionIndex(manifestRev);
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258 }
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259 */
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260 }