Mercurial > hg4j

annotate src/org/tmatesoft/hg/repo/HgRepository.java @ 214:4252faa556cd

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Use custom timezone identifier to avoid applying daylight savings from the zone guessed
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Mon, 16 May 2011 21:10:36 +0200
parents 706bcc7cfee4
children 8de327242aa0
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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a3a2e5deb320 Updated contact address to support@hg4j.com
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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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18
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19 import java.io.File;
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20 import java.io.IOException;
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21 import java.lang.ref.SoftReference;
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22 import java.util.ArrayList;
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23 import java.util.Collections;
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24 import java.util.HashMap;
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25 import java.util.List;
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27 import org.tmatesoft.hg.internal.ConfigFile;
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28 import org.tmatesoft.hg.internal.DataAccessProvider;
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29 import org.tmatesoft.hg.internal.Filter;
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30 import org.tmatesoft.hg.internal.RelativePathRewrite;
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31 import org.tmatesoft.hg.internal.RequiresFile;
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32 import org.tmatesoft.hg.internal.RevlogStream;
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33 import org.tmatesoft.hg.util.FileIterator;
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34 import org.tmatesoft.hg.util.FileWalker;
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35 import org.tmatesoft.hg.util.Path;
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36 import org.tmatesoft.hg.util.PathRewrite;
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40 /**
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41 * Shall be as state-less as possible, all the caching happens outside the repo, in commands/walkers
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42 *
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43 * @author Artem Tikhomirov
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44 * @author TMate Software Ltd.
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45 */
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46 public final class HgRepository {
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48 // if new constants added, consider fixing HgInternals#wrongLocalRevision
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49 public static final int TIP = -3;
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50 public static final int BAD_REVISION = Integer.MIN_VALUE;
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51 public static final int WORKING_COPY = -2;
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52
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53 // temp aux marker method
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54 public static IllegalStateException notImplemented() {
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55 return new IllegalStateException("Not implemented");
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56 }
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58 private final File repoDir; // .hg folder
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59 private final String repoLocation;
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60 private final DataAccessProvider dataAccess;
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61 private final PathRewrite normalizePath;
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62 private final PathRewrite dataPathHelper;
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63 private final PathRewrite repoPathHelper;
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64
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65 private HgChangelog changelog;
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66 private HgManifest manifest;
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67 private HgTags tags;
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68 // XXX perhaps, shall enable caching explicitly
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69 private final HashMap<Path, SoftReference<RevlogStream>> streamsCache = new HashMap<Path, SoftReference<RevlogStream>>();
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70
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71 private final org.tmatesoft.hg.internal.Internals impl = new org.tmatesoft.hg.internal.Internals();
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72 private HgIgnore ignore;
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73 private ConfigFile configFile;
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75 HgRepository(String repositoryPath) {
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76 repoDir = null;
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77 repoLocation = repositoryPath;
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78 dataAccess = null;
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79 dataPathHelper = repoPathHelper = null;
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80 normalizePath = null;
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81 }
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83 HgRepository(String repositoryPath, File repositoryRoot) {
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84 assert ".hg".equals(repositoryRoot.getName()) && repositoryRoot.isDirectory();
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85 assert repositoryPath != null;
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86 assert repositoryRoot != null;
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87 repoDir = repositoryRoot;
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88 repoLocation = repositoryPath;
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89 dataAccess = new DataAccessProvider();
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90 final boolean runningOnWindows = System.getProperty("os.name").indexOf("Windows") != -1;
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91 if (runningOnWindows) {
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92 normalizePath = new PathRewrite() {
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93
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94 public String rewrite(String path) {
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95 // TODO handle . and .. (although unlikely to face them from GUI client)
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96 path = path.replace('\\', '/').replace("//", "/");
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97 if (path.startsWith("/")) {
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98 path = path.substring(1);
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99 }
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100 return path;
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101 }
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102 };
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103 } else {
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104 normalizePath = new PathRewrite.Empty(); // or strip leading slash, perhaps?
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105 }
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106 parseRequires();
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107 dataPathHelper = impl.buildDataFilesHelper();
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108 repoPathHelper = impl.buildRepositoryFilesHelper();
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109 }
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111 @Override
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112 public String toString() {
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113 return getClass().getSimpleName() + "[" + getLocation() + (isInvalid() ? "(BAD)" : "") + "]";
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114 }
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116 public String getLocation() {
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117 return repoLocation;
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118 }
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119
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120 public boolean isInvalid() {
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121 return repoDir == null || !repoDir.exists() || !repoDir.isDirectory();
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122 }
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124 public HgChangelog getChangelog() {
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125 if (this.changelog == null) {
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126 String storagePath = repoPathHelper.rewrite("00changelog.i");
202
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diff changeset
127 RevlogStream content = resolve(Path.create(storagePath), true);
97
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128 this.changelog = new HgChangelog(this, content);
0
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129 }
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130 return this.changelog;
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131 }
2
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132
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133 public HgManifest getManifest() {
2
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134 if (this.manifest == null) {
202
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135 RevlogStream content = resolve(Path.create(repoPathHelper.rewrite("00manifest.i")), true);
13
df8c67f3006a Basic manifest parsing to analyze what's in there
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diff changeset
136 this.manifest = new HgManifest(this, content);
2
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137 }
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138 return this.manifest;
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139 }
50
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140
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141 public final HgTags getTags() {
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142 if (tags == null) {
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143 tags = new HgTags();
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144 try {
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145 tags.readGlobal(new File(repoDir.getParentFile(), ".hgtags"));
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146 tags.readLocal(new File(repoDir, "localtags"));
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147 } catch (IOException ex) {
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148 ex.printStackTrace(); // FIXME log or othewise report
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149 }
50
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150 }
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151 return tags;
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152 }
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153
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diff changeset
154 public HgDataFile getFileNode(String path) {
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155 String nPath = normalizePath.rewrite(path);
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diff changeset
156 String storagePath = dataPathHelper.rewrite(nPath);
202
706bcc7cfee4 Basic test for HgIncomingCommand. Fix RepositoryComparator for cases when whole repository is unknown. Respect freshly initialized (empty) repositories in general.
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diff changeset
157 RevlogStream content = resolve(Path.create(storagePath), false);
115
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158 Path p = Path.create(nPath);
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159 if (content == null) {
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160 return new HgDataFile(this, p);
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161 }
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162 return new HgDataFile(this, p, content);
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163 }
1
a3576694a4d1 Repository detection from local/specified directory
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diff changeset
164
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165 public HgDataFile getFileNode(Path path) {
77
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166 String storagePath = dataPathHelper.rewrite(path.toString());
202
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diff changeset
167 RevlogStream content = resolve(Path.create(storagePath), false);
115
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diff changeset
168 // XXX no content when no file? or HgDataFile.exists() to detect that?
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169 if (content == null) {
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170 return new HgDataFile(this, path);
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171 }
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172 return new HgDataFile(this, path, content);
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173 }
2
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diff changeset
174
142
37a34044e6bd More reasonable use of path normalizer and path.source
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diff changeset
175 /* clients need to rewrite path from their FS to a repository-friendly paths, and, perhaps, vice versa*/
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diff changeset
176 public PathRewrite getToRepoPathHelper() {
74
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diff changeset
177 return normalizePath;
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178 }
2
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diff changeset
179
114
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diff changeset
180 // local to hide use of io.File.
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diff changeset
181 /*package-local*/ File getRepositoryRoot() {
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182 return repoDir;
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183 }
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184
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185 // 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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diff changeset
186 /*package-local*/ final HgDirstate loadDirstate() {
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187 return new HgDirstate(getDataAccess(), new File(repoDir, "dirstate"));
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188 }
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189
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diff changeset
190 // package-local, see comment for loadDirstate
91
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diff changeset
191 /*package-local*/ final HgIgnore getIgnore() {
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192 // TODO read config for additional locations
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193 if (ignore == null) {
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diff changeset
194 ignore = new HgIgnore();
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diff changeset
195 try {
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diff changeset
196 File ignoreFile = new File(repoDir.getParentFile(), ".hgignore");
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diff changeset
197 ignore.read(ignoreFile);
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198 } catch (IOException ex) {
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diff changeset
199 ex.printStackTrace(); // log warn
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200 }
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diff changeset
201 }
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diff changeset
202 return ignore;
74
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diff changeset
203 }
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diff changeset
204
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diff changeset
205 /*package-local*/ DataAccessProvider getDataAccess() {
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diff changeset
206 return dataAccess;
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diff changeset
207 }
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diff changeset
208
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diff changeset
209 // FIXME not sure repository shall create walkers
141
8248aae33f7d Adopt FileIterator moving towards WCStatusCollector parameterizing. Improved path handling, move 'em around
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parents: 133
diff changeset
210 /*package-local*/ FileIterator createWorkingDirWalker() {
8248aae33f7d Adopt FileIterator moving towards WCStatusCollector parameterizing. Improved path handling, move 'em around
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parents: 133
diff changeset
211 File repoRoot = repoDir.getParentFile();
142
37a34044e6bd More reasonable use of path normalizer and path.source
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parents: 141
diff changeset
212 Path.Source pathSrc = new Path.SimpleSource(new PathRewrite.Composite(new RelativePathRewrite(repoRoot), getToRepoPathHelper()));
141
8248aae33f7d Adopt FileIterator moving towards WCStatusCollector parameterizing. Improved path handling, move 'em around
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parents: 133
diff changeset
213 // Impl note: simple source is enough as files in the working dir are all unique
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parents: 133
diff changeset
214 // even if they might get reused (i.e. after FileIterator#reset() and walking once again),
8248aae33f7d Adopt FileIterator moving towards WCStatusCollector parameterizing. Improved path handling, move 'em around
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parents: 133
diff changeset
215 // path caching is better to be done in the code which knows that path are being reused
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diff changeset
216 return new FileWalker(repoRoot, pathSrc);
74
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diff changeset
217 }
9
d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 5
diff changeset
218
2
08db726a0fb7 Shaping out low-level Hg structures
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diff changeset
219 /**
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diff changeset
220 * Perhaps, should be separate interface, like ContentLookup
74
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diff changeset
221 * path - repository storage path (i.e. one usually with .i or .d)
2
08db726a0fb7 Shaping out low-level Hg structures
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diff changeset
222 */
202
706bcc7cfee4 Basic test for HgIncomingCommand. Fix RepositoryComparator for cases when whole repository is unknown. Respect freshly initialized (empty) repositories in general.
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diff changeset
223 /*package-local*/ RevlogStream resolve(Path path, boolean shallFakeNonExistent) {
74
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diff changeset
224 final SoftReference<RevlogStream> ref = streamsCache.get(path);
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diff changeset
225 RevlogStream cached = ref == null ? null : ref.get();
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diff changeset
226 if (cached != null) {
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diff changeset
227 return cached;
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diff changeset
228 }
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diff changeset
229 File f = new File(repoDir, path.toString());
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diff changeset
230 if (f.exists()) {
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diff changeset
231 RevlogStream s = new RevlogStream(dataAccess, f);
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diff changeset
232 streamsCache.put(path, new SoftReference<RevlogStream>(s));
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diff changeset
233 return s;
202
706bcc7cfee4 Basic test for HgIncomingCommand. Fix RepositoryComparator for cases when whole repository is unknown. Respect freshly initialized (empty) repositories in general.
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diff changeset
234 } else {
706bcc7cfee4 Basic test for HgIncomingCommand. Fix RepositoryComparator for cases when whole repository is unknown. Respect freshly initialized (empty) repositories in general.
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diff changeset
235 if (shallFakeNonExistent) {
706bcc7cfee4 Basic test for HgIncomingCommand. Fix RepositoryComparator for cases when whole repository is unknown. Respect freshly initialized (empty) repositories in general.
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parents: 197
diff changeset
236 try {
706bcc7cfee4 Basic test for HgIncomingCommand. Fix RepositoryComparator for cases when whole repository is unknown. Respect freshly initialized (empty) repositories in general.
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diff changeset
237 File fake = File.createTempFile(f.getName(), null);
706bcc7cfee4 Basic test for HgIncomingCommand. Fix RepositoryComparator for cases when whole repository is unknown. Respect freshly initialized (empty) repositories in general.
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parents: 197
diff changeset
238 fake.deleteOnExit();
706bcc7cfee4 Basic test for HgIncomingCommand. Fix RepositoryComparator for cases when whole repository is unknown. Respect freshly initialized (empty) repositories in general.
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parents: 197
diff changeset
239 return new RevlogStream(dataAccess, fake);
706bcc7cfee4 Basic test for HgIncomingCommand. Fix RepositoryComparator for cases when whole repository is unknown. Respect freshly initialized (empty) repositories in general.
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diff changeset
240 } catch (IOException ex) {
706bcc7cfee4 Basic test for HgIncomingCommand. Fix RepositoryComparator for cases when whole repository is unknown. Respect freshly initialized (empty) repositories in general.
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diff changeset
241 ex.printStackTrace(); // FIXME report in debug
706bcc7cfee4 Basic test for HgIncomingCommand. Fix RepositoryComparator for cases when whole repository is unknown. Respect freshly initialized (empty) repositories in general.
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diff changeset
242 }
706bcc7cfee4 Basic test for HgIncomingCommand. Fix RepositoryComparator for cases when whole repository is unknown. Respect freshly initialized (empty) repositories in general.
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diff changeset
243 }
74
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diff changeset
244 }
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diff changeset
245 return null; // XXX empty stream instead?
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diff changeset
246 }
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247
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248 // can't expose internal class, otherwise seems reasonable to have it in API
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249 /*package-local*/ ConfigFile getConfigFile() {
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250 if (configFile == null) {
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251 configFile = impl.newConfigFile();
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252 configFile.addLocation(new File(System.getProperty("user.home"), ".hgrc"));
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253 // last one, overrides anything else
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254 // <repo>/.hg/hgrc
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255 configFile.addLocation(new File(getRepositoryRoot(), "hgrc"));
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256 }
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257 return configFile;
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258 }
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259
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260 /*package-local*/ List<Filter> getFiltersFromRepoToWorkingDir(Path p) {
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261 return instantiateFilters(p, new Filter.Options(Filter.Direction.FromRepo));
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262 }
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263
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264 /*package-local*/ List<Filter> getFiltersFromWorkingDirToRepo(Path p) {
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265 return instantiateFilters(p, new Filter.Options(Filter.Direction.ToRepo));
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266 }
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267
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268 private List<Filter> instantiateFilters(Path p, Filter.Options opts) {
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269 List<Filter.Factory> factories = impl.getFilters(this, getConfigFile());
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270 if (factories.isEmpty()) {
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271 return Collections.emptyList();
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272 }
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273 ArrayList<Filter> rv = new ArrayList<Filter>(factories.size());
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274 for (Filter.Factory ff : factories) {
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275 Filter f = ff.create(p, opts);
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276 if (f != null) {
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277 rv.add(f);
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278 }
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279 }
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280 return rv;
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281 }
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282
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283 private void parseRequires() {
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284 new RequiresFile().parse(impl, new File(repoDir, "requires"));
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285 }
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286
0
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287 }