Mercurial > hg4j

annotate src/org/tmatesoft/hg/repo/HgRepository.java @ 278:55fad5e0e98b

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Ensure capacity grows regardless of initial map size. Separate unit test
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Mon, 29 Aug 2011 23:31:37 +0200
parents a6d19adc2636
children 35125450c804
rev   line source
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1 /*
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2 * Copyright (c) 2010-2011 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.repo;
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19 import static org.tmatesoft.hg.core.Nodeid.NULL;
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20
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21 import java.io.File;
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22 import java.io.IOException;
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23 import java.io.StringReader;
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24 import java.lang.ref.SoftReference;
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25 import java.util.ArrayList;
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26 import java.util.Collections;
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27 import java.util.HashMap;
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28 import java.util.List;
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30 import org.tmatesoft.hg.core.HgDataStreamException;
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31 import org.tmatesoft.hg.core.Nodeid;
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32 import org.tmatesoft.hg.internal.ByteArrayChannel;
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33 import org.tmatesoft.hg.internal.ConfigFile;
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34 import org.tmatesoft.hg.internal.DataAccessProvider;
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35 import org.tmatesoft.hg.internal.Experimental;
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36 import org.tmatesoft.hg.internal.Filter;
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37 import org.tmatesoft.hg.internal.RequiresFile;
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38 import org.tmatesoft.hg.internal.RevlogStream;
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39 import org.tmatesoft.hg.internal.SubrepoManager;
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40 import org.tmatesoft.hg.util.CancelledException;
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41 import org.tmatesoft.hg.util.Pair;
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42 import org.tmatesoft.hg.util.Path;
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43 import org.tmatesoft.hg.util.PathRewrite;
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44 import org.tmatesoft.hg.util.ProgressSupport;
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48 /**
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49 * Shall be as state-less as possible, all the caching happens outside the repo, in commands/walkers
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50 *
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51 * @author Artem Tikhomirov
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52 * @author TMate Software Ltd.
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53 */
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54 public final class HgRepository {
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56 // if new constants added, consider fixing HgInternals#wrongLocalRevision
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57 public static final int TIP = -3;
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58 public static final int BAD_REVISION = Integer.MIN_VALUE;
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59 public static final int WORKING_COPY = -2;
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61 public static final String DEFAULT_BRANCH_NAME = "default";
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63 // temp aux marker method
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64 public static IllegalStateException notImplemented() {
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65 return new IllegalStateException("Not implemented");
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66 }
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68 private final File repoDir; // .hg folder
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69 private final File workingDir; // .hg/../
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70 private final String repoLocation;
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71 private final DataAccessProvider dataAccess;
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72 private final PathRewrite normalizePath;
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73 private final PathRewrite dataPathHelper;
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74 private final PathRewrite repoPathHelper;
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76 private HgChangelog changelog;
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77 private HgManifest manifest;
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78 private HgTags tags;
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79 private HgBranches branches;
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80 private HgMergeState mergeState;
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81 private SubrepoManager subRepos;
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83 // XXX perhaps, shall enable caching explicitly
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84 private final HashMap<Path, SoftReference<RevlogStream>> streamsCache = new HashMap<Path, SoftReference<RevlogStream>>();
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86 private final org.tmatesoft.hg.internal.Internals impl = new org.tmatesoft.hg.internal.Internals();
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87 private HgIgnore ignore;
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88 private ConfigFile configFile;
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90 HgRepository(String repositoryPath) {
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91 repoDir = null;
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92 workingDir = null;
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93 repoLocation = repositoryPath;
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94 dataAccess = null;
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95 dataPathHelper = repoPathHelper = null;
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96 normalizePath = null;
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97 }
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99 HgRepository(String repositoryPath, File repositoryRoot) {
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100 assert ".hg".equals(repositoryRoot.getName()) && repositoryRoot.isDirectory();
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101 assert repositoryPath != null;
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102 assert repositoryRoot != null;
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103 repoDir = repositoryRoot;
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104 workingDir = repoDir.getParentFile();
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105 if (workingDir == null) {
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106 throw new IllegalArgumentException(repoDir.toString());
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107 }
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108 repoLocation = repositoryPath;
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109 dataAccess = new DataAccessProvider();
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110 final boolean runningOnWindows = System.getProperty("os.name").indexOf("Windows") != -1;
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111 if (runningOnWindows) {
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112 normalizePath = new PathRewrite() {
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113
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114 public String rewrite(String path) {
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115 // TODO handle . and .. (although unlikely to face them from GUI client)
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116 path = path.replace('\\', '/').replace("//", "/");
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117 if (path.startsWith("/")) {
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118 path = path.substring(1);
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119 }
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120 return path;
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121 }
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122 };
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123 } else {
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124 normalizePath = new PathRewrite.Empty(); // or strip leading slash, perhaps?
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125 }
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126 parseRequires();
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127 dataPathHelper = impl.buildDataFilesHelper();
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128 repoPathHelper = impl.buildRepositoryFilesHelper();
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129 }
0
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130
145
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131 @Override
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132 public String toString() {
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133 return getClass().getSimpleName() + "[" + getLocation() + (isInvalid() ? "(BAD)" : "") + "]";
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134 }
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135
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136 public String getLocation() {
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137 return repoLocation;
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138 }
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139
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140 public boolean isInvalid() {
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141 return repoDir == null || !repoDir.exists() || !repoDir.isDirectory();
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142 }
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143
97
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144 public HgChangelog getChangelog() {
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145 if (this.changelog == null) {
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146 String storagePath = repoPathHelper.rewrite("00changelog.i");
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147 RevlogStream content = resolve(Path.create(storagePath), true);
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148 this.changelog = new HgChangelog(this, content);
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149 }
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150 return this.changelog;
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151 }
2
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152
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153 public HgManifest getManifest() {
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154 if (this.manifest == null) {
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155 RevlogStream content = resolve(Path.create(repoPathHelper.rewrite("00manifest.i")), true);
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156 this.manifest = new HgManifest(this, content);
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157 }
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158 return this.manifest;
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159 }
50
f1db8610da62 Log to consult (placeholder, for now) class to find out associated tags
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160
231
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161 public HgTags getTags() {
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162 if (tags == null) {
234
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163 tags = new HgTags(this);
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164 try {
234
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165 HgDataFile hgTags = getFileNode(".hgtags");
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166 if (hgTags.exists()) {
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167 for (int i = 0; i <= hgTags.getLastRevision(); i++) { // FIXME in fact, would be handy to have walk(start,end)
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168 // method for data files as well, though it looks odd.
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169 try {
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diff changeset
170 ByteArrayChannel sink = new ByteArrayChannel();
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171 hgTags.content(i, sink);
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172 final String content = new String(sink.toArray(), "UTF8");
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173 tags.readGlobal(new StringReader(content));
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174 } catch (CancelledException ex) {
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diff changeset
175 ex.printStackTrace(); // IGNORE, can't happen, we did not configure cancellation
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176 } catch (HgDataStreamException ex) {
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diff changeset
177 ex.printStackTrace(); // FIXME need to react
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diff changeset
178 } catch (IOException ex) {
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179 // UnsupportedEncodingException can't happen (UTF8)
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diff changeset
180 // only from readGlobal. Need to reconsider exceptions thrown from there
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diff changeset
181 ex.printStackTrace(); // XXX need to decide what to do this. failure to read single revision shall not break complete cycle
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diff changeset
182 }
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diff changeset
183 }
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184 }
252
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diff changeset
185 tags.readGlobal(new File(getWorkingDir(), ".hgtags")); // XXX replace with HgDataFile.workingCopy
104
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diff changeset
186 tags.readLocal(new File(repoDir, "localtags"));
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diff changeset
187 } catch (IOException ex) {
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188 ex.printStackTrace(); // FIXME log or othewise report
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189 }
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190 }
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191 return tags;
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192 }
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193
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diff changeset
194 public HgBranches getBranches() {
220
8de327242aa0 Basic information about branches
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195 if (branches == null) {
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196 branches = new HgBranches(this);
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197 branches.collect(ProgressSupport.Factory.get(null));
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198 }
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199 return branches;
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200 }
231
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diff changeset
201
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diff changeset
202 @Experimental(reason="Perhaps, shall not cache instance, and provide loadMergeState as it may change often")
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diff changeset
203 public HgMergeState getMergeState() {
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204 if (mergeState == null) {
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diff changeset
205 mergeState = new HgMergeState(this);
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diff changeset
206 }
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207 return mergeState;
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diff changeset
208 }
220
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diff changeset
209
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diff changeset
210 public HgDataFile getFileNode(String path) {
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diff changeset
211 String nPath = normalizePath.rewrite(path);
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diff changeset
212 String storagePath = dataPathHelper.rewrite(nPath);
202
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diff changeset
213 RevlogStream content = resolve(Path.create(storagePath), false);
115
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diff changeset
214 Path p = Path.create(nPath);
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diff changeset
215 if (content == null) {
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diff changeset
216 return new HgDataFile(this, p);
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diff changeset
217 }
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diff changeset
218 return new HgDataFile(this, p, content);
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diff changeset
219 }
1
a3576694a4d1 Repository detection from local/specified directory
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diff changeset
220
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diff changeset
221 public HgDataFile getFileNode(Path path) {
77
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diff changeset
222 String storagePath = dataPathHelper.rewrite(path.toString());
202
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diff changeset
223 RevlogStream content = resolve(Path.create(storagePath), false);
115
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diff changeset
224 // XXX no content when no file? or HgDataFile.exists() to detect that?
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diff changeset
225 if (content == null) {
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diff changeset
226 return new HgDataFile(this, path);
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diff changeset
227 }
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diff changeset
228 return new HgDataFile(this, path, content);
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diff changeset
229 }
2
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diff changeset
230
142
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diff changeset
231 /* clients need to rewrite path from their FS to a repository-friendly paths, and, perhaps, vice versa*/
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diff changeset
232 public PathRewrite getToRepoPathHelper() {
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diff changeset
233 return normalizePath;
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diff changeset
234 }
235
fd845a53f53d Experimental access to working dir parents
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diff changeset
235
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diff changeset
236 @Experimental(reason="return type and possible values (presently null, perhaps Nodeid.NULL) may get changed")
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diff changeset
237 public Pair<Nodeid,Nodeid> getWorkingCopyParents() {
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diff changeset
238 Nodeid[] p = loadDirstate().parents();
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diff changeset
239 return new Pair<Nodeid,Nodeid>(NULL == p[0] ? null : p[0], NULL == p[1] ? null : p[1]);
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diff changeset
240 }
252
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diff changeset
241
a6d19adc2636 HgRepository.getWorkingCopyBranchName() to retrieve branch associated with working directory
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diff changeset
242 /**
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diff changeset
243 * @return name of the branch associated with working directory, never <code>null</code>.
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244 */
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245 public String getWorkingCopyBranchName() {
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246 return loadDirstate().branch();
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247 }
2
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248
237
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249 /**
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250 * @return location where user files (shall) reside
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251 */
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252 public File getWorkingDir() {
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253 return workingDir;
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254 }
239
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255
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256 /**
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257 * Provides access to sub-repositories defined in this repository. Enumerated sub-repositories are those directly
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258 * known, not recursive collection of all nested sub-repositories.
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259 * @return list of all known sub-repositories in this repository, or empty list if none found.
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260 */
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261 public List<HgSubrepoLocation> getSubrepositories() {
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262 if (subRepos == null) {
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263 subRepos = new SubrepoManager(this);
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264 }
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265 return subRepos.all();
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266 }
237
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267
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268 // shall be of use only for internal classes
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269 /*package-local*/ File getRepositoryRoot() {
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270 return repoDir;
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271 }
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272
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273 // XXX package-local, unless there are cases when required from outside (guess, working dir/revision walkers may hide dirstate access and no public visibility needed)
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274 /*package-local*/ final HgDirstate loadDirstate() {
252
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275 return new HgDirstate(this, new File(repoDir, "dirstate"));
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276 }
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277
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278 // package-local, see comment for loadDirstate
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279 /*package-local*/ final HgIgnore getIgnore() {
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280 // TODO read config for additional locations
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281 if (ignore == null) {
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282 ignore = new HgIgnore();
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283 try {
252
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284 File ignoreFile = new File(getWorkingDir(), ".hgignore");
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285 ignore.read(ignoreFile);
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286 } catch (IOException ex) {
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287 ex.printStackTrace(); // log warn
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288 }
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289 }
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290 return ignore;
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291 }
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292
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293 /*package-local*/ DataAccessProvider getDataAccess() {
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294 return dataAccess;
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295 }
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296
2
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297 /**
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298 * Perhaps, should be separate interface, like ContentLookup
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299 * path - repository storage path (i.e. one usually with .i or .d)
2
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300 */
202
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301 /*package-local*/ RevlogStream resolve(Path path, boolean shallFakeNonExistent) {
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302 final SoftReference<RevlogStream> ref = streamsCache.get(path);
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303 RevlogStream cached = ref == null ? null : ref.get();
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304 if (cached != null) {
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305 return cached;
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306 }
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307 File f = new File(repoDir, path.toString());
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308 if (f.exists()) {
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309 RevlogStream s = new RevlogStream(dataAccess, f);
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310 streamsCache.put(path, new SoftReference<RevlogStream>(s));
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311 return s;
202
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312 } else {
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313 if (shallFakeNonExistent) {
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314 try {
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315 File fake = File.createTempFile(f.getName(), null);
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316 fake.deleteOnExit();
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317 return new RevlogStream(dataAccess, fake);
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318 } catch (IOException ex) {
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319 ex.printStackTrace(); // FIXME report in debug
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320 }
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321 }
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322 }
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323 return null; // XXX empty stream instead?
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324 }
114
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325
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326 // can't expose internal class, otherwise seems reasonable to have it in API
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327 /*package-local*/ ConfigFile getConfigFile() {
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328 if (configFile == null) {
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329 configFile = impl.newConfigFile();
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330 configFile.addLocation(new File(System.getProperty("user.home"), ".hgrc"));
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331 // last one, overrides anything else
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332 // <repo>/.hg/hgrc
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333 configFile.addLocation(new File(getRepositoryRoot(), "hgrc"));
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334 }
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335 return configFile;
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336 }
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337
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338 /*package-local*/ List<Filter> getFiltersFromRepoToWorkingDir(Path p) {
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339 return instantiateFilters(p, new Filter.Options(Filter.Direction.FromRepo));
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340 }
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341
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342 /*package-local*/ List<Filter> getFiltersFromWorkingDirToRepo(Path p) {
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343 return instantiateFilters(p, new Filter.Options(Filter.Direction.ToRepo));
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344 }
237
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345
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346 /*package-local*/ File getFile(HgDataFile dataFile) {
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347 return new File(getWorkingDir(), dataFile.getPath().toString());
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348 }
114
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349
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350 private List<Filter> instantiateFilters(Path p, Filter.Options opts) {
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351 List<Filter.Factory> factories = impl.getFilters(this, getConfigFile());
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352 if (factories.isEmpty()) {
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353 return Collections.emptyList();
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354 }
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355 ArrayList<Filter> rv = new ArrayList<Filter>(factories.size());
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356 for (Filter.Factory ff : factories) {
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357 Filter f = ff.create(p, opts);
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358 if (f != null) {
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359 rv.add(f);
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360 }
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361 }
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362 return rv;
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diff changeset
363 }
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364
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365 private void parseRequires() {
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366 new RequiresFile().parse(impl, new File(repoDir, "requires"));
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367 }
114
46291ec605a0 Filters to read and initialize according to configuration files
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dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
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