Mercurial > hg4j

annotate src/org/tmatesoft/hg/core/HgChangeset.java @ 366:189dc6dc1c3e

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Use exceptions to expose errors reading mercurial data
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Fri, 16 Dec 2011 04:43:18 +0100
parents ee6b467c1a5f
children 9517df1ef7ec
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 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
154
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24 import org.tmatesoft.hg.repo.HgChangelog.RawChangeset;
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25 import org.tmatesoft.hg.repo.HgChangelog;
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26 import org.tmatesoft.hg.repo.HgRepository;
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27 import org.tmatesoft.hg.repo.HgStatusCollector;
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28 import org.tmatesoft.hg.util.Path;
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31 /**
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32 * Record in the Mercurial changelog, describing single commit.
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33 *
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34 * Not thread-safe, don't try to read from different threads
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35 *
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36 * @author Artem Tikhomirov
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37 * @author TMate Software Ltd.
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38 */
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39 public class HgChangeset implements Cloneable {
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40 private final HgStatusCollector statusHelper;
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41 private final Path.Source pathHelper;
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43 private HgChangelog.ParentWalker parentHelper;
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44
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45 //
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46 private RawChangeset changeset;
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47 private Nodeid nodeid;
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48
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49 //
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50 private List<HgFileRevision> modifiedFiles, addedFiles;
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51 private List<Path> deletedFiles;
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52 private int revNumber;
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53 private byte[] parent1, parent2;
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55 // XXX consider CommandContext with StatusCollector, PathPool etc. Commands optionally get CC through a cons or create new
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56 // and pass it around
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57 /*package-local*/HgChangeset(HgStatusCollector statusCollector, Path.Source pathFactory) {
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58 statusHelper = statusCollector;
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59 pathHelper = pathFactory;
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60 }
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62 /*package-local*/ void init(int localRevNumber, Nodeid nid, RawChangeset rawChangeset) {
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63 revNumber = localRevNumber;
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64 nodeid = nid;
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65 changeset = rawChangeset.clone();
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66 modifiedFiles = addedFiles = null;
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67 deletedFiles = null;
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68 parent1 = parent2 = null;
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69 // keep references to parentHelper, statusHelper and pathHelper
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70 }
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72 /*package-local*/ void setParentHelper(HgChangelog.ParentWalker pw) {
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73 parentHelper = pw;
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74 if (parentHelper != null) {
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75 if (parentHelper.getRepo() != statusHelper.getRepo()) {
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76 throw new IllegalArgumentException();
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77 }
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78 }
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79 }
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81 public int getRevision() {
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82 return revNumber;
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83 }
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84 public Nodeid getNodeid() {
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85 return nodeid;
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86 }
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87 public String getUser() {
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88 return changeset.user();
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89 }
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90 public String getComment() {
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91 return changeset.comment();
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92 }
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93 public String getBranch() {
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94 return changeset.branch();
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95 }
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97 /**
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98 * @return used to be String, now {@link HgDate}, use {@link HgDate#toString()} to get same result as before
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99 */
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100 public HgDate getDate() {
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101 return new HgDate(changeset.date().getTime(), changeset.timezone());
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102 }
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103 public Nodeid getManifestRevision() {
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104 return changeset.manifest();
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105 }
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107 public List<Path> getAffectedFiles() {
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108 // reports files as recorded in changelog. Note, merge revisions may have no
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109 // files listed, and thus this method would return empty list, while
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110 // #getModifiedFiles() would return list with merged file(s) (because it uses status to get 'em, not
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111 // what #files() gives).
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112 ArrayList<Path> rv = new ArrayList<Path>(changeset.files().size());
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113 for (String name : changeset.files()) {
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114 rv.add(pathHelper.path(name));
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115 }
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116 return rv;
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117 }
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118
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119 public List<HgFileRevision> getModifiedFiles() throws HgInvalidControlFileException {
64
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120 if (modifiedFiles == null) {
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121 initFileChanges();
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122 }
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123 return modifiedFiles;
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124 }
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125
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126 public List<HgFileRevision> getAddedFiles() throws HgInvalidControlFileException {
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127 if (addedFiles == null) {
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128 initFileChanges();
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129 }
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130 return addedFiles;
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131 }
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132
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133 public List<Path> getRemovedFiles() throws HgInvalidControlFileException {
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134 if (deletedFiles == null) {
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135 initFileChanges();
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136 }
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137 return deletedFiles;
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138 }
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139
366
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140 public boolean isMerge() throws HgInvalidControlFileException {
195
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141 // p1 == -1 and p2 != -1 is legitimate case
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142 return !(getFirstParentRevision().isNull() || getSecondParentRevision().isNull());
125
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143 }
124
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144
274
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145 /**
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146 * @return never <code>null</code>
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147 * @throws HgInvalidControlFileException FIXME
274
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148 */
366
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149 public Nodeid getFirstParentRevision() throws HgInvalidControlFileException {
195
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150 if (parentHelper != null) {
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151 return parentHelper.safeFirstParent(nodeid);
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152 }
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153 // read once for both p1 and p2
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154 if (parent1 == null) {
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155 parent1 = new byte[20];
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156 parent2 = new byte[20];
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157 statusHelper.getRepo().getChangelog().parents(revNumber, new int[2], parent1, parent2);
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158 }
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159 return Nodeid.fromBinary(parent1, 0);
124
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160 }
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161
274
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162 /**
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163 * @return never <code>null</code>
366
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164 * @throws HgInvalidControlFileException FIXME
274
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165 */
366
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166 public Nodeid getSecondParentRevision() throws HgInvalidControlFileException {
195
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167 if (parentHelper != null) {
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168 return parentHelper.safeSecondParent(nodeid);
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169 }
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170 if (parent2 == null) {
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171 parent1 = new byte[20];
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172 parent2 = new byte[20];
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173 statusHelper.getRepo().getChangelog().parents(revNumber, new int[2], parent1, parent2);
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174 }
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175 return Nodeid.fromBinary(parent2, 0);
124
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176 }
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177
64
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178 @Override
129
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179 public HgChangeset clone() {
64
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180 try {
129
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181 HgChangeset copy = (HgChangeset) super.clone();
196
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182 // copy.changeset references this.changeset, doesn't need own copy
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183 return copy;
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184 } catch (CloneNotSupportedException ex) {
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185 throw new InternalError(ex.toString());
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186 }
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187 }
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188
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diff changeset
189 private /*synchronized*/ void initFileChanges() throws HgInvalidControlFileException {
64
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190 ArrayList<Path> deleted = new ArrayList<Path>();
231
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diff changeset
191 ArrayList<HgFileRevision> modified = new ArrayList<HgFileRevision>();
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diff changeset
192 ArrayList<HgFileRevision> added = new ArrayList<HgFileRevision>();
94
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diff changeset
193 HgStatusCollector.Record r = new HgStatusCollector.Record();
64
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194 statusHelper.change(revNumber, r);
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195 final HgRepository repo = statusHelper.getRepo();
93
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diff changeset
196 for (Path s : r.getModified()) {
64
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197 Nodeid nid = r.nodeidAfterChange(s);
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198 if (nid == null) {
148
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
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diff changeset
199 throw new HgBadStateException();
64
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200 }
316
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diff changeset
201 modified.add(new HgFileRevision(repo, nid, s, null));
64
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202 }
316
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diff changeset
203 final Map<Path, Path> copied = r.getCopied();
93
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204 for (Path s : r.getAdded()) {
64
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diff changeset
205 Nodeid nid = r.nodeidAfterChange(s);
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diff changeset
206 if (nid == null) {
148
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diff changeset
207 throw new HgBadStateException();
64
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208 }
316
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diff changeset
209 added.add(new HgFileRevision(repo, nid, s, copied.get(s)));
64
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210 }
93
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diff changeset
211 for (Path s : r.getRemoved()) {
124
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diff changeset
212 // with Path from getRemoved, may just copy
93
d55d4eedfc57 Switch to Path instead of String in filenames returned by various status operations
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diff changeset
213 deleted.add(s);
64
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214 }
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diff changeset
215 modified.trimToSize();
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diff changeset
216 added.trimToSize();
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diff changeset
217 deleted.trimToSize();
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parents:
diff changeset
218 modifiedFiles = Collections.unmodifiableList(modified);
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parents:
diff changeset
219 addedFiles = Collections.unmodifiableList(added);
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diff changeset
220 deletedFiles = Collections.unmodifiableList(deleted);
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diff changeset
221 }
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diff changeset
222 }