Mercurial > jhg
annotate src/org/tmatesoft/hg/core/HgCommitCommand.java @ 666:27a3ddedd6cc
Added tag v1.2m1 for changeset dde18bc7053b
author | Artem Tikhomirov <tikhomirov.artem@gmail.com> |
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date | Wed, 10 Jul 2013 20:22:07 +0200 |
parents | 6526d8adbc0f |
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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.COWTransaction; |
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24 import org.tmatesoft.hg.internal.CommitFacility; |
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25 import org.tmatesoft.hg.internal.CompleteRepoLock; |
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26 import org.tmatesoft.hg.internal.FileContentSupplier; |
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27 import org.tmatesoft.hg.internal.Internals; |
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28 import org.tmatesoft.hg.internal.Transaction; |
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29 import org.tmatesoft.hg.internal.WorkingCopyContent; |
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30 import org.tmatesoft.hg.repo.HgChangelog; |
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31 import org.tmatesoft.hg.repo.HgDataFile; |
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32 import org.tmatesoft.hg.repo.HgInternals; |
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33 import org.tmatesoft.hg.repo.HgInvalidControlFileException; |
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34 import org.tmatesoft.hg.repo.HgRepository; |
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35 import org.tmatesoft.hg.repo.HgRuntimeException; |
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36 import org.tmatesoft.hg.repo.HgStatusCollector.Record; |
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37 import org.tmatesoft.hg.repo.HgWorkingCopyStatusCollector; |
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38 import org.tmatesoft.hg.util.CancelledException; |
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39 import org.tmatesoft.hg.util.Outcome; |
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40 import org.tmatesoft.hg.util.Outcome.Kind; |
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41 import org.tmatesoft.hg.util.Pair; |
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42 import org.tmatesoft.hg.util.Path; |
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43 |
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44 /** |
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45 * 'hg commit' counterpart, commit changes |
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46 * |
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47 * @since 1.1 |
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48 * @author Artem Tikhomirov |
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49 * @author TMate Software Ltd. |
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50 */ |
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51 public class HgCommitCommand extends HgAbstractCommand<HgCommitCommand> { |
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52 |
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53 private final HgRepository repo; |
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54 private String message; |
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55 private String user; |
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56 // nodeid of newly added revision |
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57 private Nodeid newRevision; |
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58 |
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59 public HgCommitCommand(HgRepository hgRepo) { |
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60 repo = hgRepo; |
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61 } |
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62 |
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63 |
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64 public HgCommitCommand message(String msg) { |
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65 message = msg; |
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66 return this; |
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67 } |
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68 |
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69 public HgCommitCommand user(String userName) { |
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70 user = userName; |
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71 return this; |
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72 } |
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73 |
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74 /** |
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75 * Tell if changes in the working directory constitute merge commit. May be invoked prior to (and independently from) {@link #execute()} |
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76 * |
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77 * @return <code>true</code> if working directory changes are result of a merge |
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78 * @throws HgLibraryFailureException to indicate unexpected issue with the repository |
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79 * @throws HgException subclass thereof to indicate other specific issue with repository state |
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80 */ |
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81 public boolean isMergeCommit() throws HgException { |
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82 try { |
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83 int[] parents = new int[2]; |
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84 detectParentFromDirstate(parents); |
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85 return parents[0] != NO_REVISION && parents[1] != NO_REVISION; |
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86 } catch (HgRuntimeException ex) { |
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87 throw new HgLibraryFailureException(ex); |
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88 } |
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89 } |
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90 |
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91 /** |
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92 * @throws HgException subclass thereof to indicate specific issue with the command arguments or repository state |
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93 * @throws HgRepositoryLockException if failed to lock the repo for modifications |
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94 * @throws IOException propagated IO errors from status walker over working directory |
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95 * @throws CancelledException if execution of the command was cancelled |
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96 */ |
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97 public Outcome execute() throws HgException, IOException, CancelledException { |
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98 if (message == null) { |
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99 throw new HgBadArgumentException("Shall supply commit message", null); |
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100 } |
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101 final CompleteRepoLock repoLock = new CompleteRepoLock(repo); |
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102 repoLock.acquire(); |
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103 try { |
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104 int[] parentRevs = new int[2]; |
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105 detectParentFromDirstate(parentRevs); |
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106 if (parentRevs[0] != NO_REVISION && parentRevs[1] != NO_REVISION) { |
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107 throw new HgBadArgumentException("Sorry, I'm not yet smart enough to perform merge commits", null); |
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108 } |
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109 HgWorkingCopyStatusCollector sc = new HgWorkingCopyStatusCollector(repo); |
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110 Record status = sc.status(HgRepository.WORKING_COPY); |
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111 if (status.getModified().size() == 0 && status.getAdded().size() == 0 && status.getRemoved().size() == 0) { |
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112 newRevision = Nodeid.NULL; |
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113 return new Outcome(Kind.Failure, "nothing to add"); |
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114 } |
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115 CommitFacility cf = new CommitFacility(Internals.getInstance(repo), parentRevs[0], parentRevs[1]); |
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116 for (Path m : status.getModified()) { |
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117 HgDataFile df = repo.getFileNode(m); |
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118 cf.add(df, new WorkingCopyContent(df)); |
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119 } |
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120 for (Path a : status.getAdded()) { |
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121 HgDataFile df = repo.getFileNode(a); // TODO need smth explicit, like repo.createNewFileNode(Path) here |
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122 // XXX might be an interesting exercise not to demand a content supplier, but instead return a "DataRequester" |
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123 // object, that would indicate interest in data, and this code would "push" it to requester, so that any exception |
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124 // is handled here, right away, and won't need to travel supplier and CommitFacility. (although try/catch inside |
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125 // supplier.read (with empty throws declaration) |
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126 cf.add(df, new FileContentSupplier(repo, a)); |
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127 } |
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128 for (Path r : status.getRemoved()) { |
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129 HgDataFile df = repo.getFileNode(r); |
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130 cf.forget(df); |
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131 } |
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132 cf.branch(detectBranch()); |
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133 cf.user(detectUser()); |
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134 Transaction.Factory trFactory = new COWTransaction.Factory(); |
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135 Transaction tr = trFactory.create(repo); |
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136 try { |
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137 newRevision = cf.commit(message, tr); |
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138 tr.commit(); |
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139 } catch (RuntimeException ex) { |
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140 tr.rollback(); |
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141 throw ex; |
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142 } catch (HgException ex) { |
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143 tr.rollback(); |
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144 throw ex; |
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145 } |
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146 return new Outcome(Kind.Success, "Commit ok"); |
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147 } catch (HgRuntimeException ex) { |
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148 throw new HgLibraryFailureException(ex); |
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149 } finally { |
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150 repoLock.release(); |
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151 } |
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152 } |
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153 |
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154 public Nodeid getCommittedRevision() { |
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155 if (newRevision == null) { |
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156 throw new IllegalStateException("Call #execute() first!"); |
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157 } |
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158 return newRevision; |
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159 } |
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160 |
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161 private String detectBranch() throws HgInvalidControlFileException { |
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162 return repo.getWorkingCopyBranchName(); |
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163 } |
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164 |
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165 private String detectUser() { |
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166 if (user != null) { |
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167 return user; |
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168 } |
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169 // TODO HgInternals is odd place for getNextCommitUsername() |
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170 return new HgInternals(repo).getNextCommitUsername(); |
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171 } |
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172 |
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173 private void detectParentFromDirstate(int[] parents) throws HgRuntimeException { |
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174 Pair<Nodeid, Nodeid> pn = repo.getWorkingCopyParents(); |
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175 HgChangelog clog = repo.getChangelog(); |
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176 parents[0] = pn.first().isNull() ? NO_REVISION : clog.getRevisionIndex(pn.first()); |
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177 parents[1] = pn.second().isNull() ? NO_REVISION : clog.getRevisionIndex(pn.second()); |
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178 } |
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179 } |