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annotate src/org/tmatesoft/hg/core/HgDiffCommand.java @ 630:72c979555cb8

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HgDiffCommand. Do not use deprecated code. Javadoc
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 23 May 2013 19:44:28 +0200
parents 5f52074707b2
children 54e16ab771ec
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 import static org.tmatesoft.hg.repo.HgRepository.TIP;
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21
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22 import org.tmatesoft.hg.internal.BlameHelper;
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23 import org.tmatesoft.hg.internal.CsetParamKeeper;
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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.HgRepository;
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29 import org.tmatesoft.hg.repo.HgRuntimeException;
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30 import org.tmatesoft.hg.util.CancelledException;
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31 import org.tmatesoft.hg.util.Path;
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32
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33 /**
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34 * 'hg diff' counterpart, with similar, diff-based, functionality
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35 *
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36 * @since 1.1
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37 * @author Artem Tikhomirov
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38 * @author TMate Software Ltd.
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39 */
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40 @Experimental(reason="#execute* methods might get renamed")
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41 public class HgDiffCommand extends HgAbstractCommand<HgDiffCommand> {
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42
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43 private final HgRepository repo;
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44 private HgDataFile df;
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45 private final CsetParamKeeper clogRevIndexStart, clogRevIndexEnd;
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46 private HgIterateDirection iterateDirection = HgIterateDirection.NewToOld;
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47
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48 public HgDiffCommand(HgRepository hgRepo) {
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49 repo = hgRepo;
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50 clogRevIndexStart = new CsetParamKeeper(hgRepo);
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51 clogRevIndexEnd = new CsetParamKeeper(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 /**
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60 * Selects the file which history to blame, mandatory.
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61 *
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62 * @param file repository file
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63 * @return <code>this</code> for convenience
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64 */
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65 public HgDiffCommand file(HgDataFile file) {
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66 df = file;
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67 return this;
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68 }
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69
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70 /**
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71 * Select range of file's history for {@link #executeDiff(HgBlameInspector)}
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72 * and {@link #executeAnnotate(HgBlameInspector)}.
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73 * <p>
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74 * {@link #executeDiff(HgBlameInspector) diff} uses these as revisions to diff against each other, while
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75 * {@link #executeAnnotate(HgBlameInspector) annotate} walks the range.
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76 *
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77 * @param changelogRevIndexStart index of changelog revision, left range boundary
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78 * @param changelogRevIndexEnd index of changelog revision, right range boundary
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79 * @return <code>this</code> for convenience
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80 * @throws HgBadArgumentException if failed to find any of supplied changeset
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81 */
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82 public HgDiffCommand range(int changelogRevIndexStart, int changelogRevIndexEnd) throws HgBadArgumentException {
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83 clogRevIndexStart.set(changelogRevIndexStart);
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84 clogRevIndexEnd.set(changelogRevIndexEnd);
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85 return this;
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86 }
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87
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88 /**
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89 * Selects revision for {@link #executeAnnotateSingleRevision(HgBlameInspector)}, the one
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90 * to diff against its parents.
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91 *
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92 * Besides, it is handy when range of interest spans up to the very beginning of the file history
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93 * (and thus is equivalent to <code>range(0, changelogRevIndex)</code>)
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94 *
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95 * @param changelogRevIndex index of changelog revision
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96 * @return <code>this</code> for convenience
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97 * @throws HgBadArgumentException if failed to find supplied changeset
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98 */
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99 public HgDiffCommand changeset(int changelogRevIndex) throws HgBadArgumentException {
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100 clogRevIndexStart.set(0);
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101 clogRevIndexEnd.set(changelogRevIndex);
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102 return this;
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103 }
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104
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105 /**
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106 * Revision differences are reported in selected order when
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107 * annotating {@link #range(int, int) range} of changesets with
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108 * {@link #executeAnnotate(HgBlameInspector)}.
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109 * <p>
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110 * This method doesn't affect {@link #executeAnnotateSingleRevision(HgBlameInspector)} and
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111 * {@link #executeDiff(HgBlameInspector)}
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112 *
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113 * @param order desired iteration order
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114 * @return <code>this</code> for convenience
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115 */
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116 public HgDiffCommand order(HgIterateDirection order) {
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117 iterateDirection = order;
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118 return this;
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119 }
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120
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121 // FIXME progress and cancellation
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122
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123 /**
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124 * Diff two revisions selected with {@link #range(int, int)} against each other.
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125 * <p>mimics 'hg diff -r clogRevIndex1 -r clogRevIndex2'
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126 *
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127 * @throws HgCallbackTargetException propagated exception from the handler
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128 * @throws CancelledException if execution of the command was cancelled
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129 * @throws HgException subclass thereof to indicate specific issue with the command arguments or repository state
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130 */
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131 public void executeDiff(HgBlameInspector insp) throws HgCallbackTargetException, CancelledException, HgException {
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132 checkFile();
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133 try {
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134 int fileRevIndex1 = fileRevIndex(df, clogRevIndexStart.get());
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135 int fileRevIndex2 = fileRevIndex(df, clogRevIndexEnd.get());
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136 BlameHelper bh = new BlameHelper(insp);
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137 bh.prepare(df, clogRevIndexStart.get(), clogRevIndexEnd.get());
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138 bh.diff(fileRevIndex1, clogRevIndexStart.get(), fileRevIndex2, clogRevIndexEnd.get());
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139 } catch (HgRuntimeException ex) {
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140 throw new HgLibraryFailureException(ex);
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141 }
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142 }
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143
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144 /**
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145 * Walk file history {@link #range(int, int) range} and report changes (diff) for each revision
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146 *
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147 * @throws HgCallbackTargetException propagated exception from the handler
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148 * @throws CancelledException if execution of the command was cancelled
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149 * @throws HgException subclass thereof to indicate specific issue with the command arguments or repository state
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150 */
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151 public void executeAnnotate(HgBlameInspector insp) throws HgCallbackTargetException, CancelledException, HgException {
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152 checkFile();
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153 try {
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154 if (!df.exists()) {
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155 return;
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156 }
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157 BlameHelper bh = new BlameHelper(insp);
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158 FileHistory fileHistory = bh.prepare(df, clogRevIndexStart.get(), clogRevIndexEnd.get());
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159
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160 int[] fileClogParentRevs = new int[2];
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161 int[] fileParentRevs = new int[2];
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162 for (FileRevisionHistoryChunk fhc : fileHistory.iterate(iterateDirection)) {
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163 for (int fri : fhc.fileRevisions(iterateDirection)) {
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164 int clogRevIndex = fhc.changeset(fri);
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165 // the way we built fileHistory ensures we won't walk past [changelogRevIndexStart..changelogRevIndexEnd]
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166 assert clogRevIndex >= clogRevIndexStart.get();
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167 assert clogRevIndex <= clogRevIndexEnd.get();
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168 fhc.fillFileParents(fri, fileParentRevs);
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169 fhc.fillCsetParents(fri, fileClogParentRevs);
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170 bh.annotateChange(fri, clogRevIndex, fileParentRevs, fileClogParentRevs);
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171 }
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172 }
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173 } catch (HgRuntimeException ex) {
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174 throw new HgLibraryFailureException(ex);
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175 }
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176 }
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177
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178 /**
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179 * Annotates changes of the file against its parent(s).
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180 * Unlike {@link #annotate(HgDataFile, int, Inspector, HgIterateDirection)}, doesn't
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181 * walk file history, looks at the specified revision only. Handles both parents (if merge revision).
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182 *
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183 * @throws HgCallbackTargetException propagated exception from the handler
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184 * @throws CancelledException if execution of the command was cancelled
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185 * @throws HgException subclass thereof to indicate specific issue with the command arguments or repository state
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186 */
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187 public void executeAnnotateSingleRevision(HgBlameInspector insp) throws HgCallbackTargetException, CancelledException, HgException {
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188 checkFile();
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189 try {
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190 int changelogRevisionIndex = clogRevIndexEnd.get();
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191 // TODO detect if file is text/binary (e.g. looking for chars < ' ' and not \t\r\n\f
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192 int fileRevIndex = fileRevIndex(df, changelogRevisionIndex);
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193 int[] fileRevParents = new int[2];
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194 df.parents(fileRevIndex, fileRevParents, null, null);
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195 if (changelogRevisionIndex == TIP) {
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196 changelogRevisionIndex = df.getChangesetRevisionIndex(fileRevIndex);
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197 }
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198 int[] fileClogParentRevs = new int[2];
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199 fileClogParentRevs[0] = fileRevParents[0] == NO_REVISION ? NO_REVISION : df.getChangesetRevisionIndex(fileRevParents[0]);
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200 fileClogParentRevs[1] = fileRevParents[1] == NO_REVISION ? NO_REVISION : df.getChangesetRevisionIndex(fileRevParents[1]);
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201 BlameHelper bh = new BlameHelper(insp);
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202 int clogIndexStart = fileClogParentRevs[0] == NO_REVISION ? (fileClogParentRevs[1] == NO_REVISION ? 0 : fileClogParentRevs[1]) : fileClogParentRevs[0];
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203 bh.prepare(df, clogIndexStart, changelogRevisionIndex);
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204 bh.annotateChange(fileRevIndex, changelogRevisionIndex, fileRevParents, fileClogParentRevs);
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205 } catch (HgRuntimeException ex) {
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206 throw new HgLibraryFailureException(ex);
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207 }
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208 }
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209
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210 private void checkFile() {
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211 if (df == null) {
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212 throw new IllegalArgumentException("File is not set");
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213 }
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214 }
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215
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216 private static int fileRevIndex(HgDataFile df, int csetRevIndex) throws HgRuntimeException {
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217 Nodeid fileRev = df.getRepo().getManifest().getFileRevision(csetRevIndex, df.getPath());
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218 return df.getRevisionIndex(fileRev);
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219 }
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220 }