Mercurial > hg4j

annotate src/org/tmatesoft/hg/core/HgLogCommand.java @ 340:a54bfe0db959

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
IAE using stale data from branchheads file (invalid due to repository rollback)
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 17 Nov 2011 06:16:20 +0100
parents a674b8590362
children 5f9073eabf06
rev   line source
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1 /*
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2 * Copyright (c) 2011 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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19 import static org.tmatesoft.hg.repo.HgRepository.TIP;
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20
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21 import java.util.ArrayList;
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22 import java.util.Arrays;
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23 import java.util.Calendar;
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24 import java.util.Collection;
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25 import java.util.Collections;
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26 import java.util.ConcurrentModificationException;
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27 import java.util.LinkedList;
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28 import java.util.List;
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29 import java.util.Set;
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30 import java.util.TreeSet;
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31
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32 import org.tmatesoft.hg.internal.IntMap;
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33 import org.tmatesoft.hg.internal.IntVector;
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34 import org.tmatesoft.hg.repo.HgChangelog;
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35 import org.tmatesoft.hg.repo.HgChangelog.RawChangeset;
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36 import org.tmatesoft.hg.repo.HgDataFile;
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37 import org.tmatesoft.hg.repo.HgRepository;
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38 import org.tmatesoft.hg.repo.HgStatusCollector;
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39 import org.tmatesoft.hg.util.CancelSupport;
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40 import org.tmatesoft.hg.util.CancelledException;
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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 import org.tmatesoft.hg.util.ProgressSupport;
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46 /**
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47 * Access to changelog, 'hg log' command counterpart.
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48 *
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49 * <pre>
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50 * Usage:
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51 * new LogCommand().limit(20).branch("maintenance-2.1").user("me").execute(new MyHandler());
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52 * </pre>
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53 * Not thread-safe (each thread has to use own {@link HgLogCommand} instance).
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54 *
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55 * @author Artem Tikhomirov
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56 * @author TMate Software Ltd.
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57 */
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58 public class HgLogCommand extends HgAbstractCommand<HgLogCommand> implements HgChangelog.Inspector {
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60 private final HgRepository repo;
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61 private Set<String> users;
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62 private Set<String> branches;
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63 private int limit = 0, count = 0;
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64 private int startRev = 0, endRev = TIP;
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65 private Calendar date;
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66 private Path file;
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67 private boolean followHistory; // makes sense only when file != null
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68 private ChangesetTransformer csetTransform;
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69 private HgChangelog.ParentWalker parentHelper;
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71 public HgLogCommand(HgRepository hgRepo) {
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72 repo = hgRepo;
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73 }
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75 /**
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76 * Limit search to specified user. Multiple user names may be specified. Once set, user names can't be
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77 * cleared, use new command instance in such cases.
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78 * @param user - full or partial name of the user, case-insensitive, non-null.
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79 * @return <code>this</code> instance for convenience
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80 * @throws IllegalArgumentException when argument is null
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81 */
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82 public HgLogCommand user(String user) {
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83 if (user == null) {
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84 throw new IllegalArgumentException();
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85 }
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86 if (users == null) {
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87 users = new TreeSet<String>();
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88 }
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89 users.add(user.toLowerCase());
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90 return this;
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91 }
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93 /**
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94 * Limit search to specified branch. Multiple branch specification possible (changeset from any of these
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95 * would be included in result). If unspecified, all branches are considered. There's no way to clean branch selection
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96 * once set, create fresh new command instead.
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97 * @param branch - branch name, case-sensitive, non-null.
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98 * @return <code>this</code> instance for convenience
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99 * @throws IllegalArgumentException when branch argument is null
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100 */
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101 public HgLogCommand branch(String branch) {
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102 if (branch == null) {
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103 throw new IllegalArgumentException();
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104 }
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105 if (branches == null) {
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106 branches = new TreeSet<String>();
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107 }
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108 branches.add(branch);
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109 return this;
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110 }
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112 // limit search to specific date
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113 // multiple?
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114 public HgLogCommand date(Calendar date) {
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115 this.date = date;
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116 // FIXME implement
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117 // isSet(field) - false => don't use in detection of 'same date'
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118 throw HgRepository.notImplemented();
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119 }
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120
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121 /**
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122 *
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123 * @param num - number of changeset to produce. Pass 0 to clear the limit.
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124 * @return <code>this</code> instance for convenience
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125 */
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126 public HgLogCommand limit(int num) {
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127 limit = num;
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128 return this;
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129 }
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130
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131 /**
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132 * Limit to specified subset of Changelog, [min(rev1,rev2), max(rev1,rev2)], inclusive.
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133 * Revision may be specified with {@link HgRepository#TIP}
148
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134 * @param rev1 - local revision number
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135 * @param rev2 - local revision number
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136 * @return <code>this</code> instance for convenience
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137 */
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138 public HgLogCommand range(int rev1, int rev2) {
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139 if (rev1 != TIP && rev2 != TIP) {
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140 startRev = rev2 < rev1 ? rev2 : rev1;
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141 endRev = startRev == rev2 ? rev1 : rev2;
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142 } else if (rev1 == TIP && rev2 != TIP) {
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143 startRev = rev2;
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144 endRev = rev1;
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145 } else {
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146 startRev = rev1;
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147 endRev = rev2;
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148 }
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149 return this;
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150 }
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151
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152 /**
253
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153 * Select specific changeset
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154 *
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155 * @param nid changeset revision
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156 * @return <code>this</code> for convenience
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157 */
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158 public HgLogCommand changeset(Nodeid nid) {
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159 // XXX perhaps, shall support multiple (...) arguments and extend #execute to handle not only range, but also set of revisions.
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160 final int csetLocal = repo.getChangelog().getLocalRevision(nid);
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161 return range(csetLocal, csetLocal);
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162 }
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163
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164 /**
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165 * Visit history of a given file only.
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166 * @param file path relative to repository root. Pass <code>null</code> to reset.
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167 * @param followCopyRename true to report changesets of the original file(-s), if copy/rename ever occured to the file.
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168 */
131
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169 public HgLogCommand file(Path file, boolean followCopyRename) {
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170 // multiple? Bad idea, would need to include extra method into Handler to tell start of next file
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171 this.file = file;
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172 followHistory = followCopyRename;
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173 return this;
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174 }
142
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175
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176 /**
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177 * Handy analog of {@link #file(Path, boolean)} when clients' paths come from filesystem and need conversion to repository's
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178 */
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179 public HgLogCommand file(String file, boolean followCopyRename) {
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180 return file(Path.create(repo.getToRepoPathHelper().rewrite(file)), followCopyRename);
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181 }
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182
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183 /**
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184 * Similar to {@link #execute(org.tmatesoft.hg.repo.RawChangeset.Inspector)}, collects and return result as a list.
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185 */
215
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186 public List<HgChangeset> execute() throws HgDataStreamException {
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187 CollectHandler collector = new CollectHandler();
215
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188 try {
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189 execute(collector);
275
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190 } catch (HgException ex) {
215
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191 // can't happen as long as our CollectHandler doesn't throw any exception
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192 throw new HgBadStateException(ex.getCause());
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193 } catch (CancelledException ex) {
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194 // can't happen, see above
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195 throw new HgBadStateException(ex);
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196 }
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197 return collector.getChanges();
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198 }
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199
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200 /**
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201 *
205
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202 * @param handler callback to process changesets.
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203 * @throws IllegalArgumentException when inspector argument is null
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204 * @throws ConcurrentModificationException if this log command instance is already running
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205 */
215
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206 public void execute(HgChangesetHandler handler) throws HgDataStreamException, HgCallbackTargetException, CancelledException {
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207 if (handler == null) {
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208 throw new IllegalArgumentException();
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209 }
193
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210 if (csetTransform != null) {
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211 throw new ConcurrentModificationException();
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212 }
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213 final ProgressSupport progressHelper = getProgressSupport(handler);
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214 try {
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215 count = 0;
328
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216 HgChangelog.ParentWalker pw = getParentHelper(file == null); // leave it uninitialized unless we iterate whole repo
193
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217 // ChangesetTransfrom creates a blank PathPool, and #file(String, boolean) above
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218 // may utilize it as well. CommandContext? How about StatusCollector there as well?
322
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219 csetTransform = new ChangesetTransformer(repo, handler, pw, progressHelper, getCancelSupport(handler, true));
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220 if (file == null) {
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221 progressHelper.start(endRev - startRev + 1);
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222 repo.getChangelog().range(startRev, endRev, this);
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223 csetTransform.checkFailure();
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224 } else {
215
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225 progressHelper.start(-1/*XXX enum const, or a dedicated method startUnspecified(). How about startAtLeast(int)?*/);
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226 HgDataFile fileNode = repo.getFileNode(file);
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227 fileNode.history(startRev, endRev, this);
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228 csetTransform.checkFailure();
126
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229 if (fileNode.isCopy()) {
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230 // even if we do not follow history, report file rename
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231 do {
126
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232 if (handler instanceof FileHistoryHandler) {
231
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233 HgFileRevision src = new HgFileRevision(repo, fileNode.getCopySourceRevision(), fileNode.getCopySourceName());
316
ee6b467c1a5f Supply HGFileRevision with copy information when possible, calculate it otherwise
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234 HgFileRevision dst = new HgFileRevision(repo, fileNode.getRevision(0), fileNode.getPath(), src.getPath());
215
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235 try {
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236 ((FileHistoryHandler) handler).copy(src, dst);
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237 } catch (RuntimeException ex) {
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238 throw new HgCallbackTargetException(ex).setRevision(fileNode.getCopySourceRevision()).setFileName(fileNode.getCopySourceName());
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239 }
126
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240 }
80
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241 if (limit > 0 && count >= limit) {
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242 // if limit reach, follow is useless.
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243 break;
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244 }
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245 if (followHistory) {
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246 fileNode = repo.getFileNode(fileNode.getCopySourceName());
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247 fileNode.history(this);
215
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248 csetTransform.checkFailure();
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249 }
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250 } while (followHistory && fileNode.isCopy());
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251 }
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252 }
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253 } finally {
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254 csetTransform = null;
215
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255 progressHelper.done();
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256 }
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257 }
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258
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259 public void execute(HgChangesetTreeHandler handler) throws CancelledException {
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260 if (handler == null) {
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261 throw new IllegalArgumentException();
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262 }
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263 if (csetTransform != null) {
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264 throw new ConcurrentModificationException();
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265 }
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266 if (file == null) {
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267 throw new IllegalArgumentException("History tree is supported for files only (at least now), please specify file");
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268 }
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269 if (followHistory) {
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270 throw new UnsupportedOperationException("Can't follow file history when building tree (yet?)");
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271 }
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272 class TreeBuildInspector implements HgChangelog.ParentInspector, HgChangelog.RevisionInspector {
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273 HistoryNode[] completeHistory;
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274 int[] commitRevisions;
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275
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276 public void next(int revisionNumber, Nodeid revision, int linkedRevision) {
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277 commitRevisions[revisionNumber] = linkedRevision;
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278 }
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279
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280 public void next(int revisionNumber, Nodeid revision, int parent1, int parent2, Nodeid nidParent1, Nodeid nidParent2) {
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281 HistoryNode p1 = null, p2 = null;
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diff changeset
282 if (parent1 != -1) {
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diff changeset
283 p1 = completeHistory[parent1];
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284 }
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285 if (parent2!= -1) {
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diff changeset
286 p2 = completeHistory[parent2];
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287 }
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288 completeHistory[revisionNumber] = new HistoryNode(commitRevisions[revisionNumber], revision, p1, p2);
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289 }
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290
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291 HistoryNode[] go(HgDataFile fileNode) {
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diff changeset
292 completeHistory = new HistoryNode[fileNode.getRevisionCount()];
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293 commitRevisions = new int[completeHistory.length];
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diff changeset
294 fileNode.walk(0, TIP, this);
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295 return completeHistory;
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296 }
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297 };
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298 final ProgressSupport progressHelper = getProgressSupport(handler);
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diff changeset
299 progressHelper.start(4);
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300 final CancelSupport cancelHelper = getCancelSupport(handler, true);
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diff changeset
301 cancelHelper.checkCancelled();
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diff changeset
302 HgDataFile fileNode = repo.getFileNode(file);
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diff changeset
303 // build tree of nodes according to parents in file's revlog
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diff changeset
304 final TreeBuildInspector treeBuildInspector = new TreeBuildInspector();
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diff changeset
305 final HistoryNode[] completeHistory = treeBuildInspector.go(fileNode);
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diff changeset
306 progressHelper.worked(1);
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diff changeset
307 cancelHelper.checkCancelled();
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diff changeset
308 ElementImpl ei = new ElementImpl(treeBuildInspector.commitRevisions.length);
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diff changeset
309 final ProgressSupport ph2;
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diff changeset
310 if (treeBuildInspector.commitRevisions.length < 100 /*XXX is it really worth it? */) {
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diff changeset
311 ei.initTransform();
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diff changeset
312 repo.getChangelog().range(ei, treeBuildInspector.commitRevisions);
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diff changeset
313 progressHelper.worked(1);
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diff changeset
314 ph2 = new ProgressSupport.Sub(progressHelper, 2);
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diff changeset
315 } else {
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diff changeset
316 ph2 = new ProgressSupport.Sub(progressHelper, 3);
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diff changeset
317 }
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diff changeset
318 ph2.start(completeHistory.length);
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diff changeset
319 // XXX shall sort completeHistory according to changeset numbers?
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diff changeset
320 for (int i = 0; i < completeHistory.length; i++ ) {
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diff changeset
321 final HistoryNode n = completeHistory[i];
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diff changeset
322 handler.next(ei.init(n));
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diff changeset
323 ph2.worked(1);
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diff changeset
324 cancelHelper.checkCancelled();
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diff changeset
325 }
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diff changeset
326 progressHelper.done();
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diff changeset
327 }
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diff changeset
328
64
19e9e220bf68 Convenient commands constitute hi-level API. org.tmatesoft namespace, GPL2 statement
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329 //
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330
154
ba2bf656f00f Changeset => RawChangeset
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diff changeset
331 public void next(int revisionNumber, Nodeid nodeid, RawChangeset cset) {
64
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diff changeset
332 if (limit > 0 && count >= limit) {
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diff changeset
333 return;
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diff changeset
334 }
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diff changeset
335 if (branches != null && !branches.contains(cset.branch())) {
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diff changeset
336 return;
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diff changeset
337 }
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diff changeset
338 if (users != null) {
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diff changeset
339 String csetUser = cset.user().toLowerCase();
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diff changeset
340 boolean found = false;
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diff changeset
341 for (String u : users) {
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diff changeset
342 if (csetUser.indexOf(u) != -1) {
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diff changeset
343 found = true;
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diff changeset
344 break;
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diff changeset
345 }
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parents:
diff changeset
346 }
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diff changeset
347 if (!found) {
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diff changeset
348 return;
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diff changeset
349 }
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diff changeset
350 }
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diff changeset
351 if (date != null) {
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parents:
diff changeset
352 // FIXME
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diff changeset
353 }
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diff changeset
354 count++;
193
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diff changeset
355 csetTransform.next(revisionNumber, nodeid, cset);
64
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diff changeset
356 }
195
c9b305df0b89 Optimization: use ParentWalker to get changeset's parents, if possible. Do not keep duplicating nodeids and strings in manifest revisions
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diff changeset
357
328
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diff changeset
358 private HgChangelog.ParentWalker getParentHelper(boolean create) {
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359 if (parentHelper == null && create) {
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360 parentHelper = repo.getChangelog().new ParentWalker();
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361 parentHelper.init();
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362 }
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363 return parentHelper;
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364 }
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365
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366
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367 /**
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368 * When {@link HgLogCommand} is executed against file, handler passed to {@link HgLogCommand#execute(HgChangesetHandler)} may optionally
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369 * implement this interface to get information about file renames. Method {@link #copy(HgFileRevision, HgFileRevision)} would
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370 * get invoked prior any changeset of the original file (if file history being followed) is reported via {@link #next(HgChangeset)}.
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371 *
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372 * For {@link HgLogCommand#file(Path, boolean)} with renamed file path and follow argument set to false,
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373 * {@link #copy(HgFileRevision, HgFileRevision)} would be invoked for the first copy/rename in the history of the file, but not
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374 * followed by any changesets.
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375 *
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376 * @author Artem Tikhomirov
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377 * @author TMate Software Ltd.
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378 */
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379 public interface FileHistoryHandler extends HgChangesetHandler {
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380 // XXX perhaps, should distinguish copy from rename? And what about merged revisions and following them?
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381 void copy(HgFileRevision from, HgFileRevision to);
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382 }
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383
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384 public static class CollectHandler implements HgChangesetHandler {
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385 private final List<HgChangeset> result = new LinkedList<HgChangeset>();
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386
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387 public List<HgChangeset> getChanges() {
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388 return Collections.unmodifiableList(result);
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389 }
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390
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391 public void next(HgChangeset changeset) {
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392 result.add(changeset.clone());
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393 }
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394 }
328
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395
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396 private static class HistoryNode {
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397 final int changeset;
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398 final Nodeid fileRevision;
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399 final HistoryNode parent1, parent2;
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400 List<HistoryNode> children;
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401
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402 HistoryNode(int cs, Nodeid revision, HistoryNode p1, HistoryNode p2) {
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403 changeset = cs;
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404 fileRevision = revision;
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405 parent1 = p1;
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406 parent2 = p2;
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407 if (p1 != null) {
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408 p1.addChild(this);
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409 }
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410 if (p2 != null) {
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411 p2.addChild(this);
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412 }
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413 }
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414
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415 void addChild(HistoryNode child) {
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416 if (children == null) {
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417 children = new ArrayList<HistoryNode>(2);
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418 }
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419 children.add(child);
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420 }
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421 }
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422
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423 private class ElementImpl implements HgChangesetTreeHandler.TreeElement, HgChangelog.Inspector {
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424 private HistoryNode historyNode;
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425 private Pair<HgChangeset, HgChangeset> parents;
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426 private List<HgChangeset> children;
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427 private IntMap<HgChangeset> cachedChangesets;
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428 private ChangesetTransformer.Transformation transform;
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429 private Nodeid changesetRevision;
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430 private Pair<Nodeid,Nodeid> parentRevisions;
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431 private List<Nodeid> childRevisions;
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432
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433 public ElementImpl(int total) {
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434 cachedChangesets = new IntMap<HgChangeset>(total);
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435 }
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436
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437 ElementImpl init(HistoryNode n) {
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438 historyNode = n;
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439 parents = null;
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440 children = null;
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441 changesetRevision = null;
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442 parentRevisions = null;
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443 childRevisions = null;
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444 return this;
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445 }
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446
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447 public Nodeid fileRevision() {
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448 return historyNode.fileRevision;
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449 }
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450
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451 public HgChangeset changeset() {
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452 return get(historyNode.changeset)[0];
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453 }
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454
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455 public Pair<HgChangeset, HgChangeset> parents() {
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456 if (parents != null) {
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457 return parents;
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458 }
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459 HistoryNode p;
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460 final int p1, p2;
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461 if ((p = historyNode.parent1) != null) {
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462 p1 = p.changeset;
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463 } else {
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464 p1 = -1;
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465 }
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466 if ((p = historyNode.parent2) != null) {
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467 p2 = p.changeset;
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468 } else {
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469 p2 = -1;
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470 }
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471 HgChangeset[] r = get(p1, p2);
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472 return parents = new Pair<HgChangeset, HgChangeset>(r[0], r[1]);
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473 }
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474
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475 public Collection<HgChangeset> children() {
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476 if (children != null) {
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477 return children;
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478 }
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479 if (historyNode.children == null) {
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480 children = Collections.emptyList();
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481 } else {
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482 int[] childrentChangesetNumbers = new int[historyNode.children.size()];
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483 int j = 0;
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484 for (HistoryNode hn : historyNode.children) {
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485 childrentChangesetNumbers[j++] = hn.changeset;
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486 }
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487 children = Arrays.asList(get(childrentChangesetNumbers));
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488 }
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489 return children;
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490 }
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491
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492 void populate(HgChangeset cs) {
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493 cachedChangesets.put(cs.getRevision(), cs);
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494 }
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495
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496 private HgChangeset[] get(int... changelogRevisionNumber) {
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497 HgChangeset[] rv = new HgChangeset[changelogRevisionNumber.length];
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498 IntVector misses = new IntVector(changelogRevisionNumber.length, -1);
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499 for (int i = 0; i < changelogRevisionNumber.length; i++) {
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500 if (changelogRevisionNumber[i] == -1) {
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501 rv[i] = null;
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502 continue;
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503 }
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504 HgChangeset cached = cachedChangesets.get(changelogRevisionNumber[i]);
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505 if (cached != null) {
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506 rv[i] = cached;
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507 } else {
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508 misses.add(changelogRevisionNumber[i]);
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509 }
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510 }
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511 if (misses.size() > 0) {
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512 final int[] changesets2read = misses.toArray();
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513 initTransform();
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514 repo.getChangelog().range(this, changesets2read);
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515 for (int changeset2read : changesets2read) {
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516 HgChangeset cs = cachedChangesets.get(changeset2read);
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517 if (cs == null) {
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518 throw new HgBadStateException();
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519 }
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520 // HgChangelog.range may reorder changesets according to their order in the changelog
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521 // thus need to find original index
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522 boolean sanity = false;
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523 for (int i = 0; i < changelogRevisionNumber.length; i++) {
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524 if (changelogRevisionNumber[i] == cs.getRevision()) {
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525 rv[i] = cs;
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526 sanity = true;
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527 break;
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528 }
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529 }
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530 assert sanity;
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531 }
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532 }
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533 return rv;
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534 }
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535
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536 // init only when needed
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537 void initTransform() {
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538 if (transform == null) {
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539 transform = new ChangesetTransformer.Transformation(new HgStatusCollector(repo)/*XXX try to reuse from context?*/, getParentHelper(false));
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540 }
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541 }
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542
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543 public void next(int revisionNumber, Nodeid nodeid, RawChangeset cset) {
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544 HgChangeset cs = transform.handle(revisionNumber, nodeid, cset);
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545 populate(cs.clone());
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546 }
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547
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548 public Nodeid changesetRevision() {
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549 if (changesetRevision == null) {
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diff changeset
550 changesetRevision = getRevision(historyNode.changeset);
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551 }
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552 return changesetRevision;
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553 }
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554
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555 public Pair<Nodeid, Nodeid> parentRevisions() {
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556 if (parentRevisions == null) {
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557 HistoryNode p;
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558 final Nodeid p1, p2;
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559 if ((p = historyNode.parent1) != null) {
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diff changeset
560 p1 = getRevision(p.changeset);
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561 } else {
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562 p1 = Nodeid.NULL;;
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563 }
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564 if ((p = historyNode.parent2) != null) {
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diff changeset
565 p2 = getRevision(p.changeset);
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566 } else {
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567 p2 = Nodeid.NULL;
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568 }
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569 parentRevisions = new Pair<Nodeid, Nodeid>(p1, p2);
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570 }
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diff changeset
571 return parentRevisions;
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572 }
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573
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574 public Collection<Nodeid> childRevisions() {
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575 if (childRevisions != null) {
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576 return childRevisions;
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577 }
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diff changeset
578 if (historyNode.children == null) {
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diff changeset
579 childRevisions = Collections.emptyList();
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580 } else {
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diff changeset
581 ArrayList<Nodeid> rv = new ArrayList<Nodeid>(historyNode.children.size());
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diff changeset
582 for (HistoryNode hn : historyNode.children) {
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diff changeset
583 rv.add(getRevision(hn.changeset));
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diff changeset
584 }
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diff changeset
585 childRevisions = Collections.unmodifiableList(rv);
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diff changeset
586 }
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diff changeset
587 return childRevisions;
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parents: 322
diff changeset
588 }
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diff changeset
589
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diff changeset
590 // reading nodeid involves reading index only, guess, can afford not to optimize multiple reads
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diff changeset
591 private Nodeid getRevision(int changelogRevisionNumber) {
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diff changeset
592 // XXX pipe through pool
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diff changeset
593 HgChangeset cs = cachedChangesets.get(changelogRevisionNumber);
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parents: 322
diff changeset
594 if (cs != null) {
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diff changeset
595 return cs.getNodeid();
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diff changeset
596 } else {
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diff changeset
597 return repo.getChangelog().getRevision(changelogRevisionNumber);
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diff changeset
598 }
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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diff changeset
599 }
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diff changeset
600 }
64
19e9e220bf68 Convenient commands constitute hi-level API. org.tmatesoft namespace, GPL2 statement
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
601 }