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annotate src/org/tmatesoft/hg/core/HgDiffCommand.java @ 629:5f52074707b2

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Diff/blame methods as command, their residence in HgDataFile was a mistake
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 22 May 2013 16:46:15 +0200
parents
children 72c979555cb8
rev   line source
629
5f52074707b2 Diff/blame methods as command, their residence in HgDataFile was a mistake
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
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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
5f52074707b2 Diff/blame methods as command, their residence in HgDataFile was a mistake
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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.HgInternals.wrongRevisionIndex;
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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.HgRepository.TIP;
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22
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23 import org.tmatesoft.hg.internal.BlameHelper;
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24 import org.tmatesoft.hg.internal.Experimental;
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25 import org.tmatesoft.hg.internal.FileHistory;
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26 import org.tmatesoft.hg.internal.FileRevisionHistoryChunk;
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27 import org.tmatesoft.hg.repo.HgDataFile;
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28 import org.tmatesoft.hg.repo.HgInternals;
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29 import org.tmatesoft.hg.repo.HgRepository;
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30 import org.tmatesoft.hg.repo.HgRuntimeException;
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31 import org.tmatesoft.hg.util.CancelledException;
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32 import org.tmatesoft.hg.util.Path;
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33
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34 /**
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35 * 'hg diff' counterpart, with similar, diff-based, functionality
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36 *
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37 * @since 1.1
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38 * @author Artem Tikhomirov
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39 * @author TMate Software Ltd.
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40 */
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41 @Experimental(reason="#execute* methods might get renamed")
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42 public class HgDiffCommand extends HgAbstractCommand<HgDiffCommand> {
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43
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44 private final HgRepository repo;
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45 private HgDataFile df;
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46 private int clogRevIndexStart, clogRevIndexEnd;
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47 private int clogRevIndexToParents;
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48 private HgIterateDirection iterateDirection = HgIterateDirection.NewToOld;
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49
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50 public HgDiffCommand(HgRepository hgRepo) {
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51 repo = hgRepo;
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52 }
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53
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54 public HgDiffCommand file(Path file) {
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55 df = repo.getFileNode(file);
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56 return this;
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57 }
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58
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59 public HgDiffCommand file(HgDataFile file) {
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60 df = file;
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61 return this;
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62 }
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63
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64 public HgDiffCommand range(int changelogRevIndexStart, int changelogRevIndexEnd) {
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65 clogRevIndexStart = changelogRevIndexStart;
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66 clogRevIndexEnd = changelogRevIndexEnd;
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67 return this;
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68 }
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69
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70 // FIXME javadoc when needed and difference with range
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71 public HgDiffCommand changeset(int changelogRevIndex) {
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72 clogRevIndexToParents = changelogRevIndex;
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73 return this;
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74 }
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75
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76 // FIXME javadoc when needed
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77 public HgDiffCommand order(HgIterateDirection order) {
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78 iterateDirection = order;
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79 return this;
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80 }
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81
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82 // FIXME progress and cancellation
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83
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84 /**
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85 * mimic 'hg diff -r clogRevIndex1 -r clogRevIndex2'
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86 */
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87 public void executeDiff(HgBlameInspector insp) throws HgCallbackTargetException, CancelledException, HgException {
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88 try {
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89 int fileRevIndex1 = fileRevIndex(df, clogRevIndexStart);
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90 int fileRevIndex2 = fileRevIndex(df, clogRevIndexEnd);
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91 BlameHelper bh = new BlameHelper(insp);
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92 bh.prepare(df, clogRevIndexStart, clogRevIndexEnd);
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93 bh.diff(fileRevIndex1, clogRevIndexStart, fileRevIndex2, clogRevIndexEnd);
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94 } catch (HgRuntimeException ex) {
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95 throw new HgLibraryFailureException(ex);
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96 }
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97 }
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98
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99 /**
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100 * Walk file history range and report changes (diff) for each revision
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101 */
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102 public void executeAnnotate(HgBlameInspector insp) throws HgCallbackTargetException, CancelledException, HgException {
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103 if (wrongRevisionIndex(clogRevIndexStart) || wrongRevisionIndex(clogRevIndexEnd)) {
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104 throw new IllegalArgumentException();
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105 }
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106 // FIXME check file and range are set
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107 try {
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108 // Note, changelogRevIndexEnd may be TIP, while the code below doesn't tolerate constants
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109 //
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110 int lastRevision = repo.getChangelog().getLastRevision();
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111 if (clogRevIndexEnd == TIP) {
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112 clogRevIndexEnd = lastRevision;
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113 }
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114 HgInternals.checkRevlogRange(clogRevIndexStart, clogRevIndexEnd, lastRevision);
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115 if (!df.exists()) {
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116 return;
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117 }
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118 BlameHelper bh = new BlameHelper(insp);
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119 FileHistory fileHistory = bh.prepare(df, clogRevIndexStart, clogRevIndexEnd);
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120
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121 int[] fileClogParentRevs = new int[2];
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122 int[] fileParentRevs = new int[2];
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123 for (FileRevisionHistoryChunk fhc : fileHistory.iterate(iterateDirection)) {
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124 for (int fri : fhc.fileRevisions(iterateDirection)) {
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125 int clogRevIndex = fhc.changeset(fri);
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126 // the way we built fileHistory ensures we won't walk past [changelogRevIndexStart..changelogRevIndexEnd]
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127 assert clogRevIndex >= clogRevIndexStart;
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128 assert clogRevIndex <= clogRevIndexEnd;
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129 fhc.fillFileParents(fri, fileParentRevs);
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130 fhc.fillCsetParents(fri, fileClogParentRevs);
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131 bh.annotateChange(fri, clogRevIndex, fileParentRevs, fileClogParentRevs);
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132 }
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133 }
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134 } catch (HgRuntimeException ex) {
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135 throw new HgLibraryFailureException(ex);
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136 }
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137 }
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138
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139 /**
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140 * Annotates changes of the file against its parent(s).
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141 * Unlike {@link #annotate(HgDataFile, int, Inspector, HgIterateDirection)}, doesn't
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142 * walk file history, looks at the specified revision only. Handles both parents (if merge revision).
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143 */
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144 public void executeAnnotateSingleRevision(HgBlameInspector insp) throws HgCallbackTargetException, CancelledException, HgException {
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145 try {
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146 int changelogRevisionIndex = clogRevIndexToParents;
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147 // TODO detect if file is text/binary (e.g. looking for chars < ' ' and not \t\r\n\f
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148 int fileRevIndex = fileRevIndex(df, changelogRevisionIndex);
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149 int[] fileRevParents = new int[2];
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150 df.parents(fileRevIndex, fileRevParents, null, null);
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151 if (changelogRevisionIndex == TIP) {
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152 changelogRevisionIndex = df.getChangesetRevisionIndex(fileRevIndex);
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153 }
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154 int[] fileClogParentRevs = new int[2];
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155 fileClogParentRevs[0] = fileRevParents[0] == NO_REVISION ? NO_REVISION : df.getChangesetRevisionIndex(fileRevParents[0]);
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156 fileClogParentRevs[1] = fileRevParents[1] == NO_REVISION ? NO_REVISION : df.getChangesetRevisionIndex(fileRevParents[1]);
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157 BlameHelper bh = new BlameHelper(insp);
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158 int clogIndexStart = fileClogParentRevs[0] == NO_REVISION ? (fileClogParentRevs[1] == NO_REVISION ? 0 : fileClogParentRevs[1]) : fileClogParentRevs[0];
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159 bh.prepare(df, clogIndexStart, changelogRevisionIndex);
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160 bh.annotateChange(fileRevIndex, changelogRevisionIndex, fileRevParents, fileClogParentRevs);
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161 } catch (HgRuntimeException ex) {
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162 throw new HgLibraryFailureException(ex);
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163 }
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164 }
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165
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166
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167 private static int fileRevIndex(HgDataFile df, int csetRevIndex) throws HgRuntimeException {
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168 Nodeid fileRev = df.getRepo().getManifest().getFileRevision(csetRevIndex, df.getPath());
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169 return df.getRevisionIndex(fileRev);
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170 }
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171 }