Mercurial > jhg

annotate src/org/tmatesoft/hg/core/HgChangeset.java @ 183:9807bf8f3a9c

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Do not assume second parent can be set only when first one is set
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 13 Apr 2011 14:15:13 +0200
parents ba2bf656f00f
children c9b305df0b89
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
102
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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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18
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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
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23 import org.tmatesoft.hg.core.HgLogCommand.FileRevision;
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24 import org.tmatesoft.hg.repo.HgChangelog.RawChangeset;
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25 import org.tmatesoft.hg.repo.HgRepository;
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26 import org.tmatesoft.hg.repo.HgStatusCollector;
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27 import org.tmatesoft.hg.util.Path;
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30 /**
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31 * Record in the Mercurial changelog, describing single commit.
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32 *
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33 * Not thread-safe, don't try to read from different threads
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34 *
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35 * @author Artem Tikhomirov
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36 * @author TMate Software Ltd.
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37 */
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38 public class HgChangeset implements Cloneable {
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39 private final HgStatusCollector statusHelper;
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40 private final Path.Source pathHelper;
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42 //
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43 private RawChangeset changeset;
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44 private Nodeid nodeid;
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45
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46 //
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47 private List<FileRevision> modifiedFiles, addedFiles;
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48 private List<Path> deletedFiles;
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49 private int revNumber;
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51 // XXX consider CommandContext with StatusCollector, PathPool etc. Commands optionally get CC through a cons or create new
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52 // and pass it around
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53 /*package-local*/HgChangeset(HgStatusCollector statusCollector, Path.Source pathFactory) {
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54 statusHelper = statusCollector;
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55 pathHelper = pathFactory;
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56 }
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58 /*package-local*/
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59 void init(int localRevNumber, Nodeid nid, RawChangeset rawChangeset) {
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60 revNumber = localRevNumber;
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61 nodeid = nid;
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62 changeset = rawChangeset;
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63 modifiedFiles = addedFiles = null;
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64 deletedFiles = null;
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65 }
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66 public int getRevision() {
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67 return revNumber;
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68 }
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69 public Nodeid getNodeid() {
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70 return nodeid;
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71 }
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72 public String getUser() {
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73 return changeset.user();
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74 }
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75 public String getComment() {
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76 return changeset.comment();
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77 }
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78 public String getBranch() {
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79 return changeset.branch();
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80 }
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81 public String getDate() {
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82 return changeset.dateString();
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83 }
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84 public Nodeid getManifestRevision() {
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85 return changeset.manifest();
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86 }
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88 public List<Path> getAffectedFiles() {
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89 // reports files as recorded in changelog. Note, merge revisions may have no
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90 // files listed, and thus this method would return empty list, while
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91 // #getModifiedFiles() would return list with merged file(s) (because it uses status to get 'em, not
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92 // what #files() gives).
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93 ArrayList<Path> rv = new ArrayList<Path>(changeset.files().size());
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94 for (String name : changeset.files()) {
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95 rv.add(pathHelper.path(name));
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96 }
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97 return rv;
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98 }
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99
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100 public List<FileRevision> getModifiedFiles() {
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101 if (modifiedFiles == null) {
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102 initFileChanges();
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103 }
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104 return modifiedFiles;
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105 }
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106
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107 public List<FileRevision> getAddedFiles() {
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108 if (addedFiles == null) {
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109 initFileChanges();
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110 }
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111 return addedFiles;
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112 }
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113
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114 public List<Path> getRemovedFiles() {
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115 if (deletedFiles == null) {
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116 initFileChanges();
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117 }
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118 return deletedFiles;
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119 }
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120
125
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121 public boolean isMerge() {
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122 return !Nodeid.NULL.equals(getSecondParentRevision());
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123 }
124
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124
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125 public Nodeid getFirstParentRevision() {
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126 // XXX may read once for both p1 and p2
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127 // or use ParentWalker to minimize reads even more.
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128 byte[] p1 = new byte[20];
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129 statusHelper.getRepo().getChangelog().parents(revNumber, new int[2], p1, null);
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130 return Nodeid.fromBinary(p1, 0);
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131 }
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132
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133 public Nodeid getSecondParentRevision() {
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134 byte[] p2 = new byte[20];
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135 statusHelper.getRepo().getChangelog().parents(revNumber, new int[2], null, p2);
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136 return Nodeid.fromBinary(p2, 0);
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137 }
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138
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139 @Override
129
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140 public HgChangeset clone() {
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141 try {
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142 HgChangeset copy = (HgChangeset) super.clone();
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143 copy.changeset = changeset.clone();
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144 return copy;
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145 } catch (CloneNotSupportedException ex) {
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146 throw new InternalError(ex.toString());
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147 }
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148 }
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149
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150 private /*synchronized*/ void initFileChanges() {
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151 ArrayList<Path> deleted = new ArrayList<Path>();
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152 ArrayList<FileRevision> modified = new ArrayList<FileRevision>();
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153 ArrayList<FileRevision> added = new ArrayList<FileRevision>();
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154 HgStatusCollector.Record r = new HgStatusCollector.Record();
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155 statusHelper.change(revNumber, r);
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156 final HgRepository repo = statusHelper.getRepo();
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157 for (Path s : r.getModified()) {
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158 Nodeid nid = r.nodeidAfterChange(s);
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159 if (nid == null) {
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160 throw new HgBadStateException();
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161 }
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162 modified.add(new FileRevision(repo, nid, s));
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163 }
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164 for (Path s : r.getAdded()) {
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165 Nodeid nid = r.nodeidAfterChange(s);
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166 if (nid == null) {
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167 throw new HgBadStateException();
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168 }
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169 added.add(new FileRevision(repo, nid, s));
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170 }
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171 for (Path s : r.getRemoved()) {
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172 // with Path from getRemoved, may just copy
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173 deleted.add(s);
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174 }
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175 modified.trimToSize();
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176 added.trimToSize();
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177 deleted.trimToSize();
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178 modifiedFiles = Collections.unmodifiableList(modified);
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179 addedFiles = Collections.unmodifiableList(added);
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180 deletedFiles = Collections.unmodifiableList(deleted);
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181 }
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182 }