Mercurial > jhg

annotate src/org/tmatesoft/hg/core/HgCommitCommand.java @ 709:497e697636fc

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Report merged lines as changed block if possible, not as a sequence of added/deleted blocks. To facilitate access to merge parent lines AddBlock got mergeLineAt() method that reports index of the line in the second parent (if any), while insertedAt() has been changed to report index in the first parent always
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 21 Aug 2013 16:23:27 +0200
parents 4ffc17c0b534
children
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.core;
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18
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19 import static org.tmatesoft.hg.repo.HgRepository.NO_REVISION;
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20
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21 import java.io.IOException;
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22
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23 import org.tmatesoft.hg.internal.CommitFacility;
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24 import org.tmatesoft.hg.internal.CompleteRepoLock;
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25 import org.tmatesoft.hg.internal.FileContentSupplier;
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26 import org.tmatesoft.hg.internal.Internals;
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27 import org.tmatesoft.hg.internal.Transaction;
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28 import org.tmatesoft.hg.internal.WorkingCopyContent;
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29 import org.tmatesoft.hg.repo.HgChangelog;
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30 import org.tmatesoft.hg.repo.HgDataFile;
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31 import org.tmatesoft.hg.repo.HgInternals;
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32 import org.tmatesoft.hg.repo.HgInvalidControlFileException;
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33 import org.tmatesoft.hg.repo.HgRepository;
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34 import org.tmatesoft.hg.repo.HgRuntimeException;
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35 import org.tmatesoft.hg.repo.HgStatusCollector.Record;
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36 import org.tmatesoft.hg.repo.HgWorkingCopyStatusCollector;
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37 import org.tmatesoft.hg.util.CancelledException;
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38 import org.tmatesoft.hg.util.Outcome;
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39 import org.tmatesoft.hg.util.Outcome.Kind;
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40 import org.tmatesoft.hg.util.Pair;
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41 import org.tmatesoft.hg.util.Path;
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42
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43 /**
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44 * 'hg commit' counterpart, commit changes
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45 *
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46 * @since 1.1
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47 * @author Artem Tikhomirov
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48 * @author TMate Software Ltd.
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49 */
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50 public class HgCommitCommand extends HgAbstractCommand<HgCommitCommand> {
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51
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52 private final HgRepository repo;
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53 private String message;
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54 private String user;
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55 // nodeid of newly added revision
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56 private Nodeid newRevision;
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57
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58 public HgCommitCommand(HgRepository hgRepo) {
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59 repo = hgRepo;
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60 }
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61
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62
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63 public HgCommitCommand message(String msg) {
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64 message = msg;
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65 return this;
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66 }
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67
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68 public HgCommitCommand user(String userName) {
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69 user = userName;
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70 return this;
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71 }
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72
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73 /**
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74 * Tell if changes in the working directory constitute merge commit. May be invoked prior to (and independently from) {@link #execute()}
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75 *
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76 * @return <code>true</code> if working directory changes are result of a merge
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77 * @throws HgLibraryFailureException to indicate unexpected issue with the repository
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78 * @throws HgException subclass thereof to indicate other specific issue with repository state
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79 */
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80 public boolean isMergeCommit() throws HgException {
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81 try {
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82 int[] parents = new int[2];
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83 detectParentFromDirstate(parents);
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84 return parents[0] != NO_REVISION && parents[1] != NO_REVISION;
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85 } catch (HgRuntimeException ex) {
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86 throw new HgLibraryFailureException(ex);
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87 }
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88 }
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89
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90 /**
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91 * @throws HgException subclass thereof to indicate specific issue with the command arguments or repository state
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92 * @throws HgRepositoryLockException if failed to lock the repo for modifications
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93 * @throws IOException propagated IO errors from status walker over working directory
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94 * @throws CancelledException if execution of the command was cancelled
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95 */
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96 public Outcome execute() throws HgException, IOException, CancelledException {
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97 if (message == null) {
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98 throw new HgBadArgumentException("Shall supply commit message", null);
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99 }
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100 final CompleteRepoLock repoLock = new CompleteRepoLock(repo);
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101 repoLock.acquire();
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102 try {
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103 int[] parentRevs = new int[2];
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104 detectParentFromDirstate(parentRevs);
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105 HgWorkingCopyStatusCollector sc = new HgWorkingCopyStatusCollector(repo);
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106 Record status = sc.status(HgRepository.WORKING_COPY);
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107 if (status.getModified().size() == 0 && status.getAdded().size() == 0 && status.getRemoved().size() == 0) {
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108 newRevision = Nodeid.NULL;
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109 return new Outcome(Kind.Failure, "nothing to add");
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110 }
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111 final Internals implRepo = Internals.getInstance(repo);
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112 CommitFacility cf = new CommitFacility(implRepo, parentRevs[0], parentRevs[1]);
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113 for (Path m : status.getModified()) {
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114 HgDataFile df = repo.getFileNode(m);
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115 cf.add(df, new WorkingCopyContent(df));
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116 }
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117 for (Path a : status.getAdded()) {
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118 HgDataFile df = repo.getFileNode(a); // TODO need smth explicit, like repo.createNewFileNode(Path) here
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119 // XXX might be an interesting exercise not to demand a content supplier, but instead return a "DataRequester"
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120 // object, that would indicate interest in data, and this code would "push" it to requester, so that any exception
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121 // is handled here, right away, and won't need to travel supplier and CommitFacility. (although try/catch inside
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122 // supplier.read (with empty throws declaration)
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123 cf.add(df, new FileContentSupplier(repo, a));
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124 }
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125 for (Path r : status.getRemoved()) {
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126 HgDataFile df = repo.getFileNode(r);
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127 cf.forget(df);
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128 }
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129 cf.branch(detectBranch());
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130 cf.user(detectUser());
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131 Transaction.Factory trFactory = implRepo.getTransactionFactory();
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132 Transaction tr = trFactory.create(repo);
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133 try {
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134 newRevision = cf.commit(message, tr);
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135 tr.commit();
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136 } catch (RuntimeException ex) {
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137 tr.rollback();
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138 throw ex;
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139 } catch (HgException ex) {
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140 tr.rollback();
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141 throw ex;
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142 }
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143 return new Outcome(Kind.Success, "Commit ok");
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144 } catch (HgRuntimeException ex) {
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145 throw new HgLibraryFailureException(ex);
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146 } finally {
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147 repoLock.release();
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148 }
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149 }
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150
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151 public Nodeid getCommittedRevision() {
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152 if (newRevision == null) {
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153 throw new IllegalStateException("Call #execute() first!");
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154 }
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155 return newRevision;
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156 }
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157
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158 private String detectBranch() throws HgInvalidControlFileException {
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159 return repo.getWorkingCopyBranchName();
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160 }
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161
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162 private String detectUser() {
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163 if (user != null) {
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164 return user;
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165 }
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166 // TODO HgInternals is odd place for getNextCommitUsername()
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167 return new HgInternals(repo).getNextCommitUsername();
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168 }
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169
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170 private void detectParentFromDirstate(int[] parents) throws HgRuntimeException {
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171 Pair<Nodeid, Nodeid> pn = repo.getWorkingCopyParents();
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172 HgChangelog clog = repo.getChangelog();
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173 parents[0] = pn.first().isNull() ? NO_REVISION : clog.getRevisionIndex(pn.first());
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174 parents[1] = pn.second().isNull() ? NO_REVISION : clog.getRevisionIndex(pn.second());
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175 }
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176 }