Mercurial > hg4j

annotate src/org/tmatesoft/hg/core/HgChangeset.java @ 465:2078692eeb58 smartgit3

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
MqManager: read status/series of the active queue
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 21 Jun 2012 21:36:06 +0200
parents 03fd8d079e9c
children 7bcfbc255f48
rev   line source
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1 /*
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2 * Copyright (c) 2011-2012 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 java.util.ArrayList;
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20 import java.util.Collections;
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21 import java.util.List;
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22 import java.util.Map;
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23
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24 import org.tmatesoft.hg.internal.PhasesHelper;
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25 import org.tmatesoft.hg.repo.HgChangelog;
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26 import org.tmatesoft.hg.repo.HgChangelog.RawChangeset;
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27 import org.tmatesoft.hg.repo.HgPhase;
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28 import org.tmatesoft.hg.repo.HgRepository;
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29 import org.tmatesoft.hg.repo.HgStatusCollector;
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30 import org.tmatesoft.hg.util.Path;
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33 /**
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34 * Record in the Mercurial changelog, describing single commit.
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35 *
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36 * Not thread-safe, don't try to read from different threads
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37 *
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38 * @author Artem Tikhomirov
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39 * @author TMate Software Ltd.
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40 */
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41 public class HgChangeset implements Cloneable {
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43 // these get initialized
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44 private RawChangeset changeset;
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45 private int revNumber;
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46 private Nodeid nodeid;
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47
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48 class ShareDataStruct {
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49 ShareDataStruct(HgStatusCollector statusCollector, Path.Source pathFactory) {
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50 statusHelper = statusCollector;
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51 pathHelper = pathFactory;
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52 }
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53 public final HgStatusCollector statusHelper;
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54 public final Path.Source pathHelper;
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56 public HgChangelog.ParentWalker parentHelper;
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57 public PhasesHelper phaseHelper;
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58 };
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60 // Helpers/utilities shared among few instances of HgChangeset
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61 private final ShareDataStruct shared;
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63 // these are built on demand
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64 private List<HgFileRevision> modifiedFiles, addedFiles;
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65 private List<Path> deletedFiles;
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66 private byte[] parent1, parent2;
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69 // XXX consider CommandContext with StatusCollector, PathPool etc. Commands optionally get CC through a cons or create new
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70 // and pass it around
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71 /*package-local*/HgChangeset(HgStatusCollector statusCollector, Path.Source pathFactory) {
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72 shared = new ShareDataStruct(statusCollector, pathFactory);
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73 }
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75 /*package-local*/ void init(int localRevNumber, Nodeid nid, RawChangeset rawChangeset) {
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76 revNumber = localRevNumber;
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77 nodeid = nid;
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78 changeset = rawChangeset.clone();
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79 modifiedFiles = addedFiles = null;
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80 deletedFiles = null;
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81 parent1 = parent2 = null;
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82 // keep references to shared (and everything in there: parentHelper, statusHelper, phaseHelper and pathHelper)
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83 }
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85 /*package-local*/ void setParentHelper(HgChangelog.ParentWalker pw) {
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86 if (pw != null) {
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87 if (pw.getRepo() != shared.statusHelper.getRepo()) {
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88 throw new IllegalArgumentException();
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89 }
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90 }
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91 shared.parentHelper = pw;
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92 }
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93
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94 public int getRevision() {
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95 return revNumber;
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96 }
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97 public Nodeid getNodeid() {
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98 return nodeid;
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99 }
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100 public String getUser() {
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101 return changeset.user();
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102 }
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103 public String getComment() {
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104 return changeset.comment();
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105 }
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106 public String getBranch() {
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107 return changeset.branch();
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108 }
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109
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110 /**
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111 * @return used to be String, now {@link HgDate}, use {@link HgDate#toString()} to get same result as before
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112 */
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113 public HgDate getDate() {
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114 return new HgDate(changeset.date().getTime(), changeset.timezone());
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115 }
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116 public Nodeid getManifestRevision() {
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117 return changeset.manifest();
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118 }
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119
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120 public List<Path> getAffectedFiles() {
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121 // reports files as recorded in changelog. Note, merge revisions may have no
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122 // files listed, and thus this method would return empty list, while
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123 // #getModifiedFiles() would return list with merged file(s) (because it uses status to get 'em, not
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124 // what #files() gives).
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125 ArrayList<Path> rv = new ArrayList<Path>(changeset.files().size());
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126 for (String name : changeset.files()) {
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127 rv.add(shared.pathHelper.path(name));
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128 }
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129 return rv;
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130 }
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131
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132 public List<HgFileRevision> getModifiedFiles() throws HgInvalidControlFileException {
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133 if (modifiedFiles == null) {
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134 initFileChanges();
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135 }
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136 return modifiedFiles;
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137 }
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138
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139 public List<HgFileRevision> getAddedFiles() throws HgInvalidControlFileException {
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140 if (addedFiles == null) {
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141 initFileChanges();
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142 }
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143 return addedFiles;
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144 }
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145
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146 public List<Path> getRemovedFiles() throws HgInvalidControlFileException {
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147 if (deletedFiles == null) {
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148 initFileChanges();
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149 }
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150 return deletedFiles;
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151 }
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152
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153 public boolean isMerge() throws HgInvalidControlFileException {
195
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154 // p1 == -1 and p2 != -1 is legitimate case
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155 return !(getFirstParentRevision().isNull() || getSecondParentRevision().isNull());
125
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156 }
124
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157
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158 /**
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159 * @return never <code>null</code>
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160 * @throws HgInvalidControlFileException if access to revlog index/data entry failed
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161 */
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162 public Nodeid getFirstParentRevision() throws HgInvalidControlFileException {
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163 if (shared.parentHelper != null) {
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164 return shared.parentHelper.safeFirstParent(nodeid);
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165 }
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166 // read once for both p1 and p2
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167 if (parent1 == null) {
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168 parent1 = new byte[20];
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169 parent2 = new byte[20];
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170 getRepo().getChangelog().parents(revNumber, new int[2], parent1, parent2);
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171 }
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172 return Nodeid.fromBinary(parent1, 0);
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173 }
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174
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175 /**
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176 * @return never <code>null</code>
380
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177 * @throws HgInvalidControlFileException if access to revlog index/data entry failed
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178 */
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179 public Nodeid getSecondParentRevision() throws HgInvalidControlFileException {
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180 if (shared.parentHelper != null) {
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181 return shared.parentHelper.safeSecondParent(nodeid);
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182 }
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183 if (parent2 == null) {
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184 parent1 = new byte[20];
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185 parent2 = new byte[20];
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186 getRepo().getChangelog().parents(revNumber, new int[2], parent1, parent2);
195
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187 }
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188 return Nodeid.fromBinary(parent2, 0);
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189 }
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190
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191 /**
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192 * Tells the phase this changeset belongs to.
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193 * @return one of {@link HgPhase} values
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194 */
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195 public HgPhase getPhase() throws HgInvalidControlFileException {
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196 if (shared.phaseHelper == null) {
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197 // XXX would be handy to obtain ProgressSupport (perhaps, from statusHelper?)
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198 // and pass it to #init(), so that there could be indication of file being read and cache being built
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199 synchronized (shared) {
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200 // ensure field is initialized only once
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201 if (shared.phaseHelper == null) {
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202 shared.phaseHelper = new PhasesHelper(getRepo(), shared.parentHelper);
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203 }
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204 }
445
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205 }
450
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206 return shared.phaseHelper.getPhase(this);
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207 }
124
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208
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209 @Override
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210 public HgChangeset clone() {
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211 try {
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212 HgChangeset copy = (HgChangeset) super.clone();
196
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213 // copy.changeset references this.changeset, doesn't need own copy
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214 return copy;
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215 } catch (CloneNotSupportedException ex) {
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216 throw new InternalError(ex.toString());
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217 }
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218 }
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219
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220 private HgRepository getRepo() {
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221 return shared.statusHelper.getRepo();
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222 }
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223
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224 private /*synchronized*/ void initFileChanges() throws HgInvalidControlFileException {
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225 ArrayList<Path> deleted = new ArrayList<Path>();
231
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226 ArrayList<HgFileRevision> modified = new ArrayList<HgFileRevision>();
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227 ArrayList<HgFileRevision> added = new ArrayList<HgFileRevision>();
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228 HgStatusCollector.Record r = new HgStatusCollector.Record();
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229 shared.statusHelper.change(revNumber, r);
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230 final HgRepository repo = getRepo();
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231 for (Path s : r.getModified()) {
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232 Nodeid nid = r.nodeidAfterChange(s);
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233 if (nid == null) {
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234 throw new HgBadStateException();
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235 }
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236 modified.add(new HgFileRevision(repo, nid, s, null));
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237 }
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238 final Map<Path, Path> copied = r.getCopied();
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239 for (Path s : r.getAdded()) {
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240 Nodeid nid = r.nodeidAfterChange(s);
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241 if (nid == null) {
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242 throw new HgBadStateException();
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243 }
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244 added.add(new HgFileRevision(repo, nid, s, copied.get(s)));
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245 }
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246 for (Path s : r.getRemoved()) {
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cea84c5995e6 Changeset to access parent nodeids
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247 // with Path from getRemoved, may just copy
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248 deleted.add(s);
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249 }
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250 modified.trimToSize();
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251 added.trimToSize();
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252 deleted.trimToSize();
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253 modifiedFiles = Collections.unmodifiableList(modified);
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254 addedFiles = Collections.unmodifiableList(added);
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255 deletedFiles = Collections.unmodifiableList(deleted);
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256 }
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257 }