Mercurial > jhg

annotate src/org/tmatesoft/hg/repo/HgRepository.java @ 231:1792b37650f2

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Introduced access to conflict resolution information (merge state)
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 01 Jun 2011 05:44:25 +0200
parents 1ec6b327a6ac
children b2cfbe46f9b6
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.Experimental;
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30 import org.tmatesoft.hg.internal.Filter;
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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.Path;
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34 import org.tmatesoft.hg.util.PathRewrite;
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35 import org.tmatesoft.hg.util.ProgressSupport;
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39 /**
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40 * Shall be as state-less as possible, all the caching happens outside the repo, in commands/walkers
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41 *
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42 * @author Artem Tikhomirov
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43 * @author TMate Software Ltd.
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44 */
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45 public final class HgRepository {
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3a7696fb457c Investigate optimization options to allow fast processing of huge repositories. Fix defect in StatusCollector that lead to wrong result comparing first revision to empty repo (-1 to 0), due to same TIP constant value
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47 // if new constants added, consider fixing HgInternals#wrongLocalRevision
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48 public static final int TIP = -3;
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49 public static final int BAD_REVISION = Integer.MIN_VALUE;
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50 public static final int WORKING_COPY = -2;
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51
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52 // temp aux marker method
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53 public static IllegalStateException notImplemented() {
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54 return new IllegalStateException("Not implemented");
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55 }
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57 private final File repoDir; // .hg folder
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58 private final String repoLocation;
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59 private final DataAccessProvider dataAccess;
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60 private final PathRewrite normalizePath;
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61 private final PathRewrite dataPathHelper;
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62 private final PathRewrite repoPathHelper;
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63
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64 private HgChangelog changelog;
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65 private HgManifest manifest;
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66 private HgTags tags;
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67 private HgBranches branches;
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68 private HgMergeState mergeState;
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70 // XXX perhaps, shall enable caching explicitly
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71 private final HashMap<Path, SoftReference<RevlogStream>> streamsCache = new HashMap<Path, SoftReference<RevlogStream>>();
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72
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73 private final org.tmatesoft.hg.internal.Internals impl = new org.tmatesoft.hg.internal.Internals();
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74 private HgIgnore ignore;
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75 private ConfigFile configFile;
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77 HgRepository(String repositoryPath) {
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78 repoDir = null;
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79 repoLocation = repositoryPath;
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80 dataAccess = null;
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81 dataPathHelper = repoPathHelper = null;
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82 normalizePath = null;
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83 }
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85 HgRepository(String repositoryPath, File repositoryRoot) {
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86 assert ".hg".equals(repositoryRoot.getName()) && repositoryRoot.isDirectory();
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87 assert repositoryPath != null;
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88 assert repositoryRoot != null;
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89 repoDir = repositoryRoot;
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90 repoLocation = repositoryPath;
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91 dataAccess = new DataAccessProvider();
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92 final boolean runningOnWindows = System.getProperty("os.name").indexOf("Windows") != -1;
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93 if (runningOnWindows) {
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94 normalizePath = new PathRewrite() {
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95
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96 public String rewrite(String path) {
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97 // TODO handle . and .. (although unlikely to face them from GUI client)
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98 path = path.replace('\\', '/').replace("//", "/");
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99 if (path.startsWith("/")) {
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100 path = path.substring(1);
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101 }
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102 return path;
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103 }
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104 };
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105 } else {
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106 normalizePath = new PathRewrite.Empty(); // or strip leading slash, perhaps?
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107 }
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108 parseRequires();
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109 dataPathHelper = impl.buildDataFilesHelper();
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110 repoPathHelper = impl.buildRepositoryFilesHelper();
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111 }
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113 @Override
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114 public String toString() {
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115 return getClass().getSimpleName() + "[" + getLocation() + (isInvalid() ? "(BAD)" : "") + "]";
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116 }
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118 public String getLocation() {
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119 return repoLocation;
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120 }
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122 public boolean isInvalid() {
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123 return repoDir == null || !repoDir.exists() || !repoDir.isDirectory();
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124 }
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diff changeset
126 public HgChangelog getChangelog() {
0
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127 if (this.changelog == null) {
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diff changeset
128 String storagePath = repoPathHelper.rewrite("00changelog.i");
202
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diff changeset
129 RevlogStream content = resolve(Path.create(storagePath), true);
97
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130 this.changelog = new HgChangelog(this, content);
0
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131 }
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132 return this.changelog;
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133 }
2
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134
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diff changeset
135 public HgManifest getManifest() {
2
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136 if (this.manifest == null) {
202
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137 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
138 this.manifest = new HgManifest(this, content);
2
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139 }
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140 return this.manifest;
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141 }
50
f1db8610da62 Log to consult (placeholder, for now) class to find out associated tags
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142
231
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143 public HgTags getTags() {
50
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144 if (tags == null) {
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145 tags = new HgTags();
104
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146 try {
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147 tags.readGlobal(new File(repoDir.getParentFile(), ".hgtags"));
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148 tags.readLocal(new File(repoDir, "localtags"));
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149 } catch (IOException ex) {
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150 ex.printStackTrace(); // FIXME log or othewise report
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151 }
50
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152 }
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153 return tags;
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154 }
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155
231
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diff changeset
156 public HgBranches getBranches() {
220
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157 if (branches == null) {
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158 branches = new HgBranches(this);
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159 branches.collect(ProgressSupport.Factory.get(null));
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160 }
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161 return branches;
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162 }
231
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163
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164 @Experimental(reason="Perhaps, shall not cache instance, and provide loadMergeState as it may change often")
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165 public HgMergeState getMergeState() {
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diff changeset
166 if (mergeState == null) {
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diff changeset
167 mergeState = new HgMergeState(this);
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diff changeset
168 }
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169 return mergeState;
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diff changeset
170 }
220
8de327242aa0 Basic information about branches
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diff changeset
171
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diff changeset
172 public HgDataFile getFileNode(String path) {
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diff changeset
173 String nPath = normalizePath.rewrite(path);
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diff changeset
174 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
175 RevlogStream content = resolve(Path.create(storagePath), false);
115
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diff changeset
176 Path p = Path.create(nPath);
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diff changeset
177 if (content == null) {
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diff changeset
178 return new HgDataFile(this, p);
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diff changeset
179 }
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diff changeset
180 return new HgDataFile(this, p, content);
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diff changeset
181 }
1
a3576694a4d1 Repository detection from local/specified directory
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diff changeset
182
74
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diff changeset
183 public HgDataFile getFileNode(Path path) {
77
c677e1593919 Moved RevlogStream implementation into .internal
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diff changeset
184 String storagePath = dataPathHelper.rewrite(path.toString());
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
185 RevlogStream content = resolve(Path.create(storagePath), false);
115
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
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diff changeset
186 // XXX no content when no file? or HgDataFile.exists() to detect that?
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diff changeset
187 if (content == null) {
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diff changeset
188 return new HgDataFile(this, path);
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diff changeset
189 }
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diff changeset
190 return new HgDataFile(this, path, content);
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diff changeset
191 }
2
08db726a0fb7 Shaping out low-level Hg structures
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diff changeset
192
142
37a34044e6bd More reasonable use of path normalizer and path.source
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diff changeset
193 /* clients need to rewrite path from their FS to a repository-friendly paths, and, perhaps, vice versa*/
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parents: 141
diff changeset
194 public PathRewrite getToRepoPathHelper() {
74
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diff changeset
195 return normalizePath;
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diff changeset
196 }
2
08db726a0fb7 Shaping out low-level Hg structures
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diff changeset
197
114
46291ec605a0 Filters to read and initialize according to configuration files
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diff changeset
198 // local to hide use of io.File.
74
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diff changeset
199 /*package-local*/ File getRepositoryRoot() {
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diff changeset
200 return repoDir;
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diff changeset
201 }
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diff changeset
202
6f1b88693d48 Complete refactoring to org.tmatesoft
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diff changeset
203 // 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
204 /*package-local*/ final HgDirstate loadDirstate() {
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diff changeset
205 return new HgDirstate(getDataAccess(), new File(repoDir, "dirstate"));
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diff changeset
206 }
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diff changeset
207
6f1b88693d48 Complete refactoring to org.tmatesoft
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diff changeset
208 // package-local, see comment for loadDirstate
91
c2ce1cfaeb9e ignore file with regex and 'honest' glob support
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diff changeset
209 /*package-local*/ final HgIgnore getIgnore() {
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diff changeset
210 // TODO read config for additional locations
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diff changeset
211 if (ignore == null) {
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diff changeset
212 ignore = new HgIgnore();
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diff changeset
213 try {
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diff changeset
214 File ignoreFile = new File(repoDir.getParentFile(), ".hgignore");
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diff changeset
215 ignore.read(ignoreFile);
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diff changeset
216 } catch (IOException ex) {
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diff changeset
217 ex.printStackTrace(); // log warn
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diff changeset
218 }
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diff changeset
219 }
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diff changeset
220 return ignore;
74
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diff changeset
221 }
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diff changeset
222
6f1b88693d48 Complete refactoring to org.tmatesoft
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diff changeset
223 /*package-local*/ DataAccessProvider getDataAccess() {
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diff changeset
224 return dataAccess;
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diff changeset
225 }
6f1b88693d48 Complete refactoring to org.tmatesoft
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diff changeset
226
2
08db726a0fb7 Shaping out low-level Hg structures
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diff changeset
227 /**
08db726a0fb7 Shaping out low-level Hg structures
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diff changeset
228 * Perhaps, should be separate interface, like ContentLookup
74
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diff changeset
229 * 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
230 */
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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parents: 197
diff changeset
231 /*package-local*/ RevlogStream resolve(Path path, boolean shallFakeNonExistent) {
74
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diff changeset
232 final SoftReference<RevlogStream> ref = streamsCache.get(path);
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diff changeset
233 RevlogStream cached = ref == null ? null : ref.get();
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diff changeset
234 if (cached != null) {
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diff changeset
235 return cached;
6f1b88693d48 Complete refactoring to org.tmatesoft
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diff changeset
236 }
6f1b88693d48 Complete refactoring to org.tmatesoft
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diff changeset
237 File f = new File(repoDir, path.toString());
6f1b88693d48 Complete refactoring to org.tmatesoft
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diff changeset
238 if (f.exists()) {
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diff changeset
239 RevlogStream s = new RevlogStream(dataAccess, f);
6f1b88693d48 Complete refactoring to org.tmatesoft
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diff changeset
240 streamsCache.put(path, new SoftReference<RevlogStream>(s));
6f1b88693d48 Complete refactoring to org.tmatesoft
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diff changeset
241 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
242 } 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
243 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
244 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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parents: 197
diff changeset
245 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
246 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
247 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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parents: 197
diff changeset
248 } 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
249 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
250 }
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251 }
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252 }
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253 return null; // XXX empty stream instead?
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254 }
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255
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256 // can't expose internal class, otherwise seems reasonable to have it in API
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257 /*package-local*/ ConfigFile getConfigFile() {
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258 if (configFile == null) {
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259 configFile = impl.newConfigFile();
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260 configFile.addLocation(new File(System.getProperty("user.home"), ".hgrc"));
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261 // last one, overrides anything else
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262 // <repo>/.hg/hgrc
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263 configFile.addLocation(new File(getRepositoryRoot(), "hgrc"));
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264 }
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265 return configFile;
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266 }
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267
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268 /*package-local*/ List<Filter> getFiltersFromRepoToWorkingDir(Path p) {
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269 return instantiateFilters(p, new Filter.Options(Filter.Direction.FromRepo));
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270 }
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271
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272 /*package-local*/ List<Filter> getFiltersFromWorkingDirToRepo(Path p) {
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273 return instantiateFilters(p, new Filter.Options(Filter.Direction.ToRepo));
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274 }
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275
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276 private List<Filter> instantiateFilters(Path p, Filter.Options opts) {
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277 List<Filter.Factory> factories = impl.getFilters(this, getConfigFile());
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278 if (factories.isEmpty()) {
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279 return Collections.emptyList();
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280 }
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281 ArrayList<Filter> rv = new ArrayList<Filter>(factories.size());
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282 for (Filter.Factory ff : factories) {
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283 Filter f = ff.create(p, opts);
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284 if (f != null) {
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285 rv.add(f);
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286 }
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287 }
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288 return rv;
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289 }
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291 private void parseRequires() {
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292 new RequiresFile().parse(impl, new File(repoDir, "requires"));
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293 }
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294
0
dbd663faec1f Basic changelog parsing
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295 }