Mercurial > hg4j

annotate src/org/tmatesoft/hg/core/HgLogCommand.java @ 367:2fadf8695f8a

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Use 'revision index' instead of the vague 'local revision number' concept in the API
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Fri, 16 Dec 2011 15:37:27 +0100
parents 189dc6dc1c3e
children 8107b95f4280
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.HgInternals;
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38 import org.tmatesoft.hg.repo.HgRepository;
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39 import org.tmatesoft.hg.repo.HgStatusCollector;
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40 import org.tmatesoft.hg.util.CancelSupport;
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41 import org.tmatesoft.hg.util.CancelledException;
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42 import org.tmatesoft.hg.util.Pair;
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43 import org.tmatesoft.hg.util.Path;
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44 import org.tmatesoft.hg.util.ProgressSupport;
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47 /**
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48 * Access to changelog, 'hg log' command counterpart.
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49 *
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50 * <pre>
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51 * Usage:
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52 * new LogCommand().limit(20).branch("maintenance-2.1").user("me").execute(new MyHandler());
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53 * </pre>
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54 * Not thread-safe (each thread has to use own {@link HgLogCommand} instance).
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55 *
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56 * @author Artem Tikhomirov
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57 * @author TMate Software Ltd.
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58 */
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59 public class HgLogCommand extends HgAbstractCommand<HgLogCommand> implements HgChangelog.Inspector {
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61 private final HgRepository repo;
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62 private Set<String> users;
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63 private Set<String> branches;
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64 private int limit = 0, count = 0;
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65 private int startRev = 0, endRev = TIP;
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66 private Calendar date;
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67 private Path file;
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68 private boolean followHistory; // makes sense only when file != null
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69 private ChangesetTransformer csetTransform;
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70 private HgChangelog.ParentWalker parentHelper;
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71
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72 public HgLogCommand(HgRepository hgRepo) {
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73 repo = hgRepo;
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74 }
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76 /**
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77 * Limit search to specified user. Multiple user names may be specified. Once set, user names can't be
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78 * cleared, use new command instance in such cases.
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79 * @param user - full or partial name of the user, case-insensitive, non-null.
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80 * @return <code>this</code> instance for convenience
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81 * @throws IllegalArgumentException when argument is null
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82 */
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83 public HgLogCommand user(String user) {
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84 if (user == null) {
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85 throw new IllegalArgumentException();
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86 }
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87 if (users == null) {
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88 users = new TreeSet<String>();
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89 }
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90 users.add(user.toLowerCase());
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91 return this;
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92 }
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94 /**
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95 * Limit search to specified branch. Multiple branch specification possible (changeset from any of these
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96 * would be included in result). If unspecified, all branches are considered. There's no way to clean branch selection
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97 * once set, create fresh new command instead.
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98 * @param branch - branch name, case-sensitive, non-null.
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99 * @return <code>this</code> instance for convenience
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100 * @throws IllegalArgumentException when branch argument is null
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101 */
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102 public HgLogCommand branch(String branch) {
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103 if (branch == null) {
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104 throw new IllegalArgumentException();
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105 }
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106 if (branches == null) {
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107 branches = new TreeSet<String>();
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108 }
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109 branches.add(branch);
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110 return this;
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111 }
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113 // limit search to specific date
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114 // multiple?
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115 public HgLogCommand date(Calendar date) {
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116 this.date = date;
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117 // FIXME implement
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118 // isSet(field) - false => don't use in detection of 'same date'
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119 throw HgRepository.notImplemented();
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120 }
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121
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122 /**
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123 *
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124 * @param num - number of changeset to produce. Pass 0 to clear the limit.
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125 * @return <code>this</code> instance for convenience
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126 */
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127 public HgLogCommand limit(int num) {
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128 limit = num;
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129 return this;
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130 }
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131
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132 /**
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133 * Limit to specified subset of Changelog, [min(rev1,rev2), max(rev1,rev2)], inclusive.
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134 * Revision may be specified with {@link HgRepository#TIP}
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135 * @param rev1 - local revision index
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136 * @param rev2 - local revision index
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137 * @return <code>this</code> instance for convenience
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138 */
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139 public HgLogCommand range(int rev1, int rev2) {
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140 if (rev1 != TIP && rev2 != TIP) {
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141 startRev = rev2 < rev1 ? rev2 : rev1;
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142 endRev = startRev == rev2 ? rev1 : rev2;
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143 } else if (rev1 == TIP && rev2 != TIP) {
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144 startRev = rev2;
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145 endRev = rev1;
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146 } else {
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147 startRev = rev1;
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148 endRev = rev2;
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149 }
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150 return this;
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151 }
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152
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153 /**
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154 * Select specific changeset
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155 *
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156 * @param nid changeset revision
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157 * @return <code>this</code> for convenience
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158 * @throws HgInvalidRevisionException if supplied nodeid doesn't identify any revision from this revlog
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159 * @throws HgInvalidControlFileException if access to revlog index/data entry failed
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160 */
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161 public HgLogCommand changeset(Nodeid nid) throws HgInvalidControlFileException, HgInvalidRevisionException {
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162 // XXX perhaps, shall support multiple (...) arguments and extend #execute to handle not only range, but also set of revisions.
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163 final int csetLocal = repo.getChangelog().getRevisionIndex(nid);
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164 return range(csetLocal, csetLocal);
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165 }
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166
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167 /**
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168 * Visit history of a given file only.
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169 * @param file path relative to repository root. Pass <code>null</code> to reset.
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170 * @param followCopyRename true to report changesets of the original file(-s), if copy/rename ever occured to the file.
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171 */
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172 public HgLogCommand file(Path file, boolean followCopyRename) {
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173 // multiple? Bad idea, would need to include extra method into Handler to tell start of next file
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174 this.file = file;
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175 followHistory = followCopyRename;
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176 return this;
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177 }
142
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178
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179 /**
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180 * Handy analog of {@link #file(Path, boolean)} when clients' paths come from filesystem and need conversion to repository's
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181 */
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182 public HgLogCommand file(String file, boolean followCopyRename) {
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183 return file(Path.create(repo.getToRepoPathHelper().rewrite(file)), followCopyRename);
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184 }
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185
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186 /**
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187 * Similar to {@link #execute(org.tmatesoft.hg.repo.RawChangeset.Inspector)}, collects and return result as a list.
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188 */
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189 public List<HgChangeset> execute() throws HgDataStreamException {
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190 CollectHandler collector = new CollectHandler();
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191 try {
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192 execute(collector);
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193 } catch (HgException ex) {
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194 // can't happen as long as our CollectHandler doesn't throw any exception
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195 throw new HgBadStateException(ex.getCause());
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196 } catch (CancelledException ex) {
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197 // can't happen, see above
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198 throw new HgBadStateException(ex);
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199 }
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200 return collector.getChanges();
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201 }
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202
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203 /**
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204 *
205
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205 * @param handler callback to process changesets.
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206 * @throws IllegalArgumentException when inspector argument is null
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207 * @throws ConcurrentModificationException if this log command instance is already running
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208 */
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209 public void execute(HgChangesetHandler handler) throws HgDataStreamException, HgInvalidControlFileException, HgCallbackTargetException, CancelledException {
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210 if (handler == null) {
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211 throw new IllegalArgumentException();
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212 }
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213 if (csetTransform != null) {
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214 throw new ConcurrentModificationException();
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215 }
215
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216 final ProgressSupport progressHelper = getProgressSupport(handler);
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217 try {
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218 count = 0;
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219 HgChangelog.ParentWalker pw = getParentHelper(file == null); // leave it uninitialized unless we iterate whole repo
193
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220 // ChangesetTransfrom creates a blank PathPool, and #file(String, boolean) above
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221 // may utilize it as well. CommandContext? How about StatusCollector there as well?
322
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222 csetTransform = new ChangesetTransformer(repo, handler, pw, progressHelper, getCancelSupport(handler, true));
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223 if (file == null) {
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224 progressHelper.start(endRev - startRev + 1);
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225 repo.getChangelog().range(startRev, endRev, this);
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226 csetTransform.checkFailure();
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227 } else {
215
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228 progressHelper.start(-1/*XXX enum const, or a dedicated method startUnspecified(). How about startAtLeast(int)?*/);
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229 HgDataFile fileNode = repo.getFileNode(file);
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230 fileNode.history(startRev, endRev, this);
215
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231 csetTransform.checkFailure();
126
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232 if (fileNode.isCopy()) {
80
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233 // even if we do not follow history, report file rename
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diff changeset
234 do {
126
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235 if (handler instanceof FileHistoryHandler) {
231
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236 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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237 HgFileRevision dst = new HgFileRevision(repo, fileNode.getRevision(0), fileNode.getPath(), src.getPath());
215
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238 try {
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239 ((FileHistoryHandler) handler).copy(src, dst);
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240 } catch (RuntimeException ex) {
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241 throw new HgCallbackTargetException(ex).setRevision(fileNode.getCopySourceRevision()).setFileName(fileNode.getCopySourceName());
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242 }
126
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243 }
80
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diff changeset
244 if (limit > 0 && count >= limit) {
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245 // if limit reach, follow is useless.
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246 break;
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247 }
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248 if (followHistory) {
126
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249 fileNode = repo.getFileNode(fileNode.getCopySourceName());
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250 fileNode.history(this);
215
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251 csetTransform.checkFailure();
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252 }
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253 } while (followHistory && fileNode.isCopy());
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254 }
77
c677e1593919 Moved RevlogStream implementation into .internal
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255 }
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256 } finally {
193
37f3d4a596e4 Use common low to hi-level changeset api transformer
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257 csetTransform = null;
215
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258 progressHelper.done();
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259 }
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260 }
328
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261
366
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262 public void execute(HgChangesetTreeHandler handler) throws CancelledException, HgException {
328
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263 if (handler == null) {
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264 throw new IllegalArgumentException();
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265 }
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266 if (csetTransform != null) {
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267 throw new ConcurrentModificationException();
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268 }
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269 if (file == null) {
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270 throw new IllegalArgumentException("History tree is supported for files only (at least now), please specify file");
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271 }
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272 if (followHistory) {
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273 throw new UnsupportedOperationException("Can't follow file history when building tree (yet?)");
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274 }
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diff changeset
275 class TreeBuildInspector implements HgChangelog.ParentInspector, HgChangelog.RevisionInspector {
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diff changeset
276 HistoryNode[] completeHistory;
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diff changeset
277 int[] commitRevisions;
64
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278
328
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diff changeset
279 public void next(int revisionNumber, Nodeid revision, int linkedRevision) {
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diff changeset
280 commitRevisions[revisionNumber] = linkedRevision;
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diff changeset
281 }
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282
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diff changeset
283 public void next(int revisionNumber, Nodeid revision, int parent1, int parent2, Nodeid nidParent1, Nodeid nidParent2) {
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diff changeset
284 HistoryNode p1 = null, p2 = null;
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diff changeset
285 if (parent1 != -1) {
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diff changeset
286 p1 = completeHistory[parent1];
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diff changeset
287 }
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288 if (parent2!= -1) {
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diff changeset
289 p2 = completeHistory[parent2];
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290 }
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diff changeset
291 completeHistory[revisionNumber] = new HistoryNode(commitRevisions[revisionNumber], revision, p1, p2);
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diff changeset
292 }
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diff changeset
293
366
189dc6dc1c3e Use exceptions to expose errors reading mercurial data
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diff changeset
294 HistoryNode[] go(HgDataFile fileNode) throws HgInvalidControlFileException {
328
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diff changeset
295 completeHistory = new HistoryNode[fileNode.getRevisionCount()];
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diff changeset
296 commitRevisions = new int[completeHistory.length];
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diff changeset
297 fileNode.walk(0, TIP, this);
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diff changeset
298 return completeHistory;
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diff changeset
299 }
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diff changeset
300 };
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diff changeset
301 final ProgressSupport progressHelper = getProgressSupport(handler);
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diff changeset
302 progressHelper.start(4);
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diff changeset
303 final CancelSupport cancelHelper = getCancelSupport(handler, true);
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diff changeset
304 cancelHelper.checkCancelled();
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diff changeset
305 HgDataFile fileNode = repo.getFileNode(file);
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diff changeset
306 // build tree of nodes according to parents in file's revlog
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diff changeset
307 final TreeBuildInspector treeBuildInspector = new TreeBuildInspector();
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diff changeset
308 final HistoryNode[] completeHistory = treeBuildInspector.go(fileNode);
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diff changeset
309 progressHelper.worked(1);
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diff changeset
310 cancelHelper.checkCancelled();
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diff changeset
311 ElementImpl ei = new ElementImpl(treeBuildInspector.commitRevisions.length);
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diff changeset
312 final ProgressSupport ph2;
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diff changeset
313 if (treeBuildInspector.commitRevisions.length < 100 /*XXX is it really worth it? */) {
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diff changeset
314 ei.initTransform();
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diff changeset
315 repo.getChangelog().range(ei, treeBuildInspector.commitRevisions);
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parents: 322
diff changeset
316 progressHelper.worked(1);
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diff changeset
317 ph2 = new ProgressSupport.Sub(progressHelper, 2);
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parents: 322
diff changeset
318 } else {
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parents: 322
diff changeset
319 ph2 = new ProgressSupport.Sub(progressHelper, 3);
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parents: 322
diff changeset
320 }
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parents: 322
diff changeset
321 ph2.start(completeHistory.length);
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parents: 322
diff changeset
322 // XXX shall sort completeHistory according to changeset numbers?
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parents: 322
diff changeset
323 for (int i = 0; i < completeHistory.length; i++ ) {
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parents: 322
diff changeset
324 final HistoryNode n = completeHistory[i];
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diff changeset
325 handler.next(ei.init(n));
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parents: 322
diff changeset
326 ph2.worked(1);
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diff changeset
327 cancelHelper.checkCancelled();
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diff changeset
328 }
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diff changeset
329 progressHelper.done();
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diff changeset
330 }
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diff changeset
331
64
19e9e220bf68 Convenient commands constitute hi-level API. org.tmatesoft namespace, GPL2 statement
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parents:
diff changeset
332 //
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parents:
diff changeset
333
154
ba2bf656f00f Changeset => RawChangeset
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parents: 148
diff changeset
334 public void next(int revisionNumber, Nodeid nodeid, RawChangeset cset) {
64
19e9e220bf68 Convenient commands constitute hi-level API. org.tmatesoft namespace, GPL2 statement
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parents:
diff changeset
335 if (limit > 0 && count >= limit) {
19e9e220bf68 Convenient commands constitute hi-level API. org.tmatesoft namespace, GPL2 statement
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parents:
diff changeset
336 return;
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parents:
diff changeset
337 }
19e9e220bf68 Convenient commands constitute hi-level API. org.tmatesoft namespace, GPL2 statement
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
338 if (branches != null && !branches.contains(cset.branch())) {
19e9e220bf68 Convenient commands constitute hi-level API. org.tmatesoft namespace, GPL2 statement
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parents:
diff changeset
339 return;
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parents:
diff changeset
340 }
19e9e220bf68 Convenient commands constitute hi-level API. org.tmatesoft namespace, GPL2 statement
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
341 if (users != null) {
19e9e220bf68 Convenient commands constitute hi-level API. org.tmatesoft namespace, GPL2 statement
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
342 String csetUser = cset.user().toLowerCase();
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parents:
diff changeset
343 boolean found = false;
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parents:
diff changeset
344 for (String u : users) {
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parents:
diff changeset
345 if (csetUser.indexOf(u) != -1) {
19e9e220bf68 Convenient commands constitute hi-level API. org.tmatesoft namespace, GPL2 statement
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parents:
diff changeset
346 found = true;
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parents:
diff changeset
347 break;
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parents:
diff changeset
348 }
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parents:
diff changeset
349 }
19e9e220bf68 Convenient commands constitute hi-level API. org.tmatesoft namespace, GPL2 statement
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
350 if (!found) {
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parents:
diff changeset
351 return;
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parents:
diff changeset
352 }
19e9e220bf68 Convenient commands constitute hi-level API. org.tmatesoft namespace, GPL2 statement
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
353 }
19e9e220bf68 Convenient commands constitute hi-level API. org.tmatesoft namespace, GPL2 statement
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
354 if (date != null) {
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
355 // FIXME
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parents:
diff changeset
356 }
19e9e220bf68 Convenient commands constitute hi-level API. org.tmatesoft namespace, GPL2 statement
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parents:
diff changeset
357 count++;
193
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358 csetTransform.next(revisionNumber, nodeid, cset);
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359 }
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360
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361 private HgChangelog.ParentWalker getParentHelper(boolean create) throws HgInvalidControlFileException {
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362 if (parentHelper == null && create) {
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363 parentHelper = repo.getChangelog().new ParentWalker();
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364 parentHelper.init();
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365 }
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366 return parentHelper;
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367 }
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368
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369
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370 /**
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371 * When {@link HgLogCommand} is executed against file, handler passed to {@link HgLogCommand#execute(HgChangesetHandler)} may optionally
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372 * implement this interface to get information about file renames. Method {@link #copy(HgFileRevision, HgFileRevision)} would
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373 * get invoked prior any changeset of the original file (if file history being followed) is reported via {@link #next(HgChangeset)}.
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374 *
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375 * For {@link HgLogCommand#file(Path, boolean)} with renamed file path and follow argument set to false,
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376 * {@link #copy(HgFileRevision, HgFileRevision)} would be invoked for the first copy/rename in the history of the file, but not
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377 * followed by any changesets.
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378 *
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379 * @author Artem Tikhomirov
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380 * @author TMate Software Ltd.
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381 */
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382 public interface FileHistoryHandler extends HgChangesetHandler {
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383 // XXX perhaps, should distinguish copy from rename? And what about merged revisions and following them?
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384 void copy(HgFileRevision from, HgFileRevision to);
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385 }
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386
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387 public static class CollectHandler implements HgChangesetHandler {
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388 private final List<HgChangeset> result = new LinkedList<HgChangeset>();
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389
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390 public List<HgChangeset> getChanges() {
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391 return Collections.unmodifiableList(result);
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392 }
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393
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394 public void next(HgChangeset changeset) {
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395 result.add(changeset.clone());
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396 }
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397 }
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398
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399 private static class HistoryNode {
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400 final int changeset;
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401 final Nodeid fileRevision;
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402 final HistoryNode parent1, parent2;
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403 List<HistoryNode> children;
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404
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405 HistoryNode(int cs, Nodeid revision, HistoryNode p1, HistoryNode p2) {
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406 changeset = cs;
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407 fileRevision = revision;
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408 parent1 = p1;
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409 parent2 = p2;
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410 if (p1 != null) {
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411 p1.addChild(this);
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412 }
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413 if (p2 != null) {
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414 p2.addChild(this);
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415 }
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416 }
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417
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418 void addChild(HistoryNode child) {
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419 if (children == null) {
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420 children = new ArrayList<HistoryNode>(2);
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421 }
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422 children.add(child);
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423 }
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424 }
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425
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426 private class ElementImpl implements HgChangesetTreeHandler.TreeElement, HgChangelog.Inspector {
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427 private HistoryNode historyNode;
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428 private Pair<HgChangeset, HgChangeset> parents;
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429 private List<HgChangeset> children;
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430 private IntMap<HgChangeset> cachedChangesets;
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431 private ChangesetTransformer.Transformation transform;
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432 private Nodeid changesetRevision;
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433 private Pair<Nodeid,Nodeid> parentRevisions;
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434 private List<Nodeid> childRevisions;
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435
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436 public ElementImpl(int total) {
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437 cachedChangesets = new IntMap<HgChangeset>(total);
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438 }
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439
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440 ElementImpl init(HistoryNode n) {
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441 historyNode = n;
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442 parents = null;
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443 children = null;
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444 changesetRevision = null;
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445 parentRevisions = null;
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446 childRevisions = null;
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447 return this;
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448 }
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449
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450 public Nodeid fileRevision() {
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451 return historyNode.fileRevision;
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452 }
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453
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454 public HgChangeset changeset() throws HgException {
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455 return get(historyNode.changeset)[0];
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456 }
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457
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458 public Pair<HgChangeset, HgChangeset> parents() throws HgException {
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459 if (parents != null) {
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460 return parents;
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461 }
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462 HistoryNode p;
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463 final int p1, p2;
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464 if ((p = historyNode.parent1) != null) {
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465 p1 = p.changeset;
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466 } else {
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467 p1 = -1;
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468 }
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469 if ((p = historyNode.parent2) != null) {
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470 p2 = p.changeset;
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471 } else {
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472 p2 = -1;
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473 }
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474 HgChangeset[] r = get(p1, p2);
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475 return parents = new Pair<HgChangeset, HgChangeset>(r[0], r[1]);
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476 }
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477
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478 public Collection<HgChangeset> children() throws HgException {
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479 if (children != null) {
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480 return children;
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481 }
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482 if (historyNode.children == null) {
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483 children = Collections.emptyList();
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484 } else {
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485 int[] childrentChangesetNumbers = new int[historyNode.children.size()];
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486 int j = 0;
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487 for (HistoryNode hn : historyNode.children) {
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diff changeset
488 childrentChangesetNumbers[j++] = hn.changeset;
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489 }
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diff changeset
490 children = Arrays.asList(get(childrentChangesetNumbers));
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491 }
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492 return children;
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493 }
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494
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diff changeset
495 void populate(HgChangeset cs) {
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diff changeset
496 cachedChangesets.put(cs.getRevision(), cs);
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497 }
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498
366
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diff changeset
499 private HgChangeset[] get(int... changelogRevisionNumber) throws HgInvalidControlFileException {
328
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500 HgChangeset[] rv = new HgChangeset[changelogRevisionNumber.length];
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501 IntVector misses = new IntVector(changelogRevisionNumber.length, -1);
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502 for (int i = 0; i < changelogRevisionNumber.length; i++) {
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503 if (changelogRevisionNumber[i] == -1) {
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diff changeset
504 rv[i] = null;
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505 continue;
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506 }
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diff changeset
507 HgChangeset cached = cachedChangesets.get(changelogRevisionNumber[i]);
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diff changeset
508 if (cached != null) {
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diff changeset
509 rv[i] = cached;
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510 } else {
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diff changeset
511 misses.add(changelogRevisionNumber[i]);
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diff changeset
512 }
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diff changeset
513 }
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diff changeset
514 if (misses.size() > 0) {
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diff changeset
515 final int[] changesets2read = misses.toArray();
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516 initTransform();
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517 repo.getChangelog().range(this, changesets2read);
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518 for (int changeset2read : changesets2read) {
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diff changeset
519 HgChangeset cs = cachedChangesets.get(changeset2read);
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parents: 322
diff changeset
520 if (cs == null) {
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diff changeset
521 throw new HgBadStateException();
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522 }
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diff changeset
523 // HgChangelog.range may reorder changesets according to their order in the changelog
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diff changeset
524 // thus need to find original index
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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diff changeset
525 boolean sanity = false;
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diff changeset
526 for (int i = 0; i < changelogRevisionNumber.length; i++) {
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diff changeset
527 if (changelogRevisionNumber[i] == cs.getRevision()) {
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diff changeset
528 rv[i] = cs;
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diff changeset
529 sanity = true;
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diff changeset
530 break;
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parents: 322
diff changeset
531 }
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diff changeset
532 }
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diff changeset
533 assert sanity;
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diff changeset
534 }
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diff changeset
535 }
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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536 return rv;
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
537 }
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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diff changeset
538
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parents: 322
diff changeset
539 // init only when needed
366
189dc6dc1c3e Use exceptions to expose errors reading mercurial data
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 354
diff changeset
540 void initTransform() throws HgInvalidControlFileException {
328
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
541 if (transform == null) {
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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diff changeset
542 transform = new ChangesetTransformer.Transformation(new HgStatusCollector(repo)/*XXX try to reuse from context?*/, getParentHelper(false));
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diff changeset
543 }
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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diff changeset
544 }
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diff changeset
545
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diff changeset
546 public void next(int revisionNumber, Nodeid nodeid, RawChangeset cset) {
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diff changeset
547 HgChangeset cs = transform.handle(revisionNumber, nodeid, cset);
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parents: 322
diff changeset
548 populate(cs.clone());
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
549 }
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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diff changeset
550
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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diff changeset
551 public Nodeid changesetRevision() {
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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diff changeset
552 if (changesetRevision == null) {
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
553 changesetRevision = getRevision(historyNode.changeset);
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
554 }
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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diff changeset
555 return changesetRevision;
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
556 }
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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diff changeset
557
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diff changeset
558 public Pair<Nodeid, Nodeid> parentRevisions() {
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parents: 322
diff changeset
559 if (parentRevisions == null) {
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
560 HistoryNode p;
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diff changeset
561 final Nodeid p1, p2;
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parents: 322
diff changeset
562 if ((p = historyNode.parent1) != null) {
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parents: 322
diff changeset
563 p1 = getRevision(p.changeset);
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parents: 322
diff changeset
564 } else {
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
565 p1 = Nodeid.NULL;;
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
566 }
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
567 if ((p = historyNode.parent2) != null) {
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
568 p2 = getRevision(p.changeset);
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
569 } else {
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
570 p2 = Nodeid.NULL;
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parents: 322
diff changeset
571 }
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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diff changeset
572 parentRevisions = new Pair<Nodeid, Nodeid>(p1, p2);
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parents: 322
diff changeset
573 }
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
574 return parentRevisions;
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
575 }
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
576
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parents: 322
diff changeset
577 public Collection<Nodeid> childRevisions() {
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parents: 322
diff changeset
578 if (childRevisions != null) {
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
579 return childRevisions;
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
580 }
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
581 if (historyNode.children == null) {
a674b8590362 Move file tree history to upper API level
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
582 childRevisions = Collections.emptyList();
a674b8590362 Move file tree history to upper API level
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
583 } else {
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parents: 322
diff changeset
584 ArrayList<Nodeid> rv = new ArrayList<Nodeid>(historyNode.children.size());
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
585 for (HistoryNode hn : historyNode.children) {
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
586 rv.add(getRevision(hn.changeset));
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
587 }
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
588 childRevisions = Collections.unmodifiableList(rv);
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
589 }
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
590 return childRevisions;
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
591 }
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
592
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
593 // reading nodeid involves reading index only, guess, can afford not to optimize multiple reads
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parents: 322
diff changeset
594 private Nodeid getRevision(int changelogRevisionNumber) {
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
595 // XXX pipe through pool
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
596 HgChangeset cs = cachedChangesets.get(changelogRevisionNumber);
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
597 if (cs != null) {
a674b8590362 Move file tree history to upper API level
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
598 return cs.getNodeid();
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
599 } else {
354
5f9073eabf06 Propagate errors with exceptions up to a end client
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 328
diff changeset
600 try {
5f9073eabf06 Propagate errors with exceptions up to a end client
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 328
diff changeset
601 return repo.getChangelog().getRevision(changelogRevisionNumber);
5f9073eabf06 Propagate errors with exceptions up to a end client
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 328
diff changeset
602 } catch (HgException ex) {
5f9073eabf06 Propagate errors with exceptions up to a end client
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 328
diff changeset
603 HgInternals.getContext(repo).getLog().error(getClass(), ex, null);
5f9073eabf06 Propagate errors with exceptions up to a end client
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 328
diff changeset
604 // FIXME propagate, perhaps?
5f9073eabf06 Propagate errors with exceptions up to a end client
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 328
diff changeset
605 return Nodeid.NULL; // FIXME this is quick-n-dirty hack to move forward with introducing exceptions
5f9073eabf06 Propagate errors with exceptions up to a end client
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 328
diff changeset
606 }
328
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
607 }
a674b8590362 Move file tree history to upper API level
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
608 }
a674b8590362 Move file tree history to upper API level
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
609 }
64
19e9e220bf68 Convenient commands constitute hi-level API. org.tmatesoft namespace, GPL2 statement
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
610 }