Mercurial > hg4j

annotate src/org/tmatesoft/hg/core/HgChangeset.java @ 209:9ce3b26798c4

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Few branches (distinct BranchChains from distinct heads) may end up with same nodes. Building BC structure fixed to reuse chain elements
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 28 Apr 2011 03:44:45 +0200
parents e2115da4cf6a
children 644ee58c9f16
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.core.Nodeid.NULL;
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21 import java.util.ArrayList;
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22 import java.util.Collections;
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23 import java.util.List;
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24
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25 import org.tmatesoft.hg.core.HgLogCommand.FileRevision;
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26 import org.tmatesoft.hg.repo.HgChangelog.RawChangeset;
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27 import org.tmatesoft.hg.repo.HgChangelog;
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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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42 private final HgStatusCollector statusHelper;
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43 private final Path.Source pathHelper;
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45 private HgChangelog.ParentWalker parentHelper;
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47 //
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48 private RawChangeset changeset;
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49 private Nodeid nodeid;
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51 //
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52 private List<FileRevision> modifiedFiles, addedFiles;
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53 private List<Path> deletedFiles;
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54 private int revNumber;
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55 private byte[] parent1, parent2;
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57 // XXX consider CommandContext with StatusCollector, PathPool etc. Commands optionally get CC through a cons or create new
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58 // and pass it around
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59 /*package-local*/HgChangeset(HgStatusCollector statusCollector, Path.Source pathFactory) {
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60 statusHelper = statusCollector;
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61 pathHelper = pathFactory;
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62 }
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64 /*package-local*/ void init(int localRevNumber, Nodeid nid, RawChangeset rawChangeset) {
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65 revNumber = localRevNumber;
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66 nodeid = nid;
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67 changeset = rawChangeset.clone();
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68 modifiedFiles = addedFiles = null;
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69 deletedFiles = null;
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70 parent1 = parent2 = null;
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71 // keep references to parentHelper, statusHelper and pathHelper
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72 }
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74 /*package-local*/ void setParentHelper(HgChangelog.ParentWalker pw) {
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75 parentHelper = pw;
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76 if (parentHelper != null) {
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77 if (parentHelper.getRepo() != statusHelper.getRepo()) {
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78 throw new IllegalArgumentException();
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79 }
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80 }
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81 }
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83 public int getRevision() {
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84 return revNumber;
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85 }
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86 public Nodeid getNodeid() {
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87 return nodeid;
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88 }
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89 public String getUser() {
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90 return changeset.user();
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91 }
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92 public String getComment() {
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93 return changeset.comment();
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94 }
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95 public String getBranch() {
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96 return changeset.branch();
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97 }
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98 public String getDate() {
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99 return changeset.dateString();
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100 }
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101 public Nodeid getManifestRevision() {
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102 return changeset.manifest();
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103 }
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105 public List<Path> getAffectedFiles() {
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106 // reports files as recorded in changelog. Note, merge revisions may have no
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107 // files listed, and thus this method would return empty list, while
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108 // #getModifiedFiles() would return list with merged file(s) (because it uses status to get 'em, not
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109 // what #files() gives).
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110 ArrayList<Path> rv = new ArrayList<Path>(changeset.files().size());
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111 for (String name : changeset.files()) {
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112 rv.add(pathHelper.path(name));
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113 }
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114 return rv;
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115 }
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116
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117 public List<FileRevision> getModifiedFiles() {
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118 if (modifiedFiles == null) {
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119 initFileChanges();
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120 }
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121 return modifiedFiles;
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122 }
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123
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124 public List<FileRevision> getAddedFiles() {
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125 if (addedFiles == null) {
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126 initFileChanges();
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127 }
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128 return addedFiles;
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129 }
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130
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131 public List<Path> getRemovedFiles() {
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132 if (deletedFiles == null) {
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133 initFileChanges();
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134 }
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135 return deletedFiles;
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136 }
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137
125
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138 public boolean isMerge() {
195
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139 // p1 == -1 and p2 != -1 is legitimate case
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140 return !NULL.equals(getFirstParentRevision()) && !NULL.equals(getSecondParentRevision());
125
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141 }
124
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142
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143 public Nodeid getFirstParentRevision() {
195
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144 if (parentHelper != null) {
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145 return parentHelper.safeFirstParent(nodeid);
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146 }
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147 // read once for both p1 and p2
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148 if (parent1 == null) {
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149 parent1 = new byte[20];
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150 parent2 = new byte[20];
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151 statusHelper.getRepo().getChangelog().parents(revNumber, new int[2], parent1, parent2);
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152 }
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153 return Nodeid.fromBinary(parent1, 0);
124
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154 }
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155
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156 public Nodeid getSecondParentRevision() {
195
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157 if (parentHelper != null) {
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158 return parentHelper.safeSecondParent(nodeid);
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159 }
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160 if (parent2 == null) {
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161 parent1 = new byte[20];
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162 parent2 = new byte[20];
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163 statusHelper.getRepo().getChangelog().parents(revNumber, new int[2], parent1, parent2);
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164 }
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165 return Nodeid.fromBinary(parent2, 0);
124
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166 }
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167
64
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168 @Override
129
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169 public HgChangeset clone() {
64
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170 try {
129
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171 HgChangeset copy = (HgChangeset) super.clone();
196
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172 // copy.changeset references this.changeset, doesn't need own copy
64
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173 return copy;
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174 } catch (CloneNotSupportedException ex) {
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175 throw new InternalError(ex.toString());
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176 }
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177 }
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178
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179 private /*synchronized*/ void initFileChanges() {
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180 ArrayList<Path> deleted = new ArrayList<Path>();
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181 ArrayList<FileRevision> modified = new ArrayList<FileRevision>();
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diff changeset
182 ArrayList<FileRevision> added = new ArrayList<FileRevision>();
94
af1f3b78b918 *StatusCollector renamed to Hg*StatusCollector
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diff changeset
183 HgStatusCollector.Record r = new HgStatusCollector.Record();
64
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184 statusHelper.change(revNumber, r);
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185 final HgRepository repo = statusHelper.getRepo();
93
d55d4eedfc57 Switch to Path instead of String in filenames returned by various status operations
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diff changeset
186 for (Path s : r.getModified()) {
64
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187 Nodeid nid = r.nodeidAfterChange(s);
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diff changeset
188 if (nid == null) {
148
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
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diff changeset
189 throw new HgBadStateException();
64
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190 }
93
d55d4eedfc57 Switch to Path instead of String in filenames returned by various status operations
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diff changeset
191 modified.add(new FileRevision(repo, nid, s));
64
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192 }
93
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diff changeset
193 for (Path s : r.getAdded()) {
64
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194 Nodeid nid = r.nodeidAfterChange(s);
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diff changeset
195 if (nid == null) {
148
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
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diff changeset
196 throw new HgBadStateException();
64
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197 }
93
d55d4eedfc57 Switch to Path instead of String in filenames returned by various status operations
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diff changeset
198 added.add(new FileRevision(repo, nid, s));
64
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diff changeset
199 }
93
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diff changeset
200 for (Path s : r.getRemoved()) {
124
cea84c5995e6 Changeset to access parent nodeids
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diff changeset
201 // 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
202 deleted.add(s);
64
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203 }
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diff changeset
204 modified.trimToSize();
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diff changeset
205 added.trimToSize();
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diff changeset
206 deleted.trimToSize();
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parents:
diff changeset
207 modifiedFiles = Collections.unmodifiableList(modified);
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parents:
diff changeset
208 addedFiles = Collections.unmodifiableList(added);
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parents:
diff changeset
209 deletedFiles = Collections.unmodifiableList(deleted);
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parents:
diff changeset
210 }
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parents:
diff changeset
211 }