Mercurial > jhg

annotate src/org/tmatesoft/hg/repo/HgRepository.java @ 233:1d389c0cb0a5

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Optimize file history walk not to iterat over whole changelog for sparse and distant revisions
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Fri, 03 Jun 2011 04:50:09 +0200
parents 1792b37650f2
children b2cfbe46f9b6
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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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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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diff changeset
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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diff changeset
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
08db726a0fb7 Shaping out low-level Hg structures
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134
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135 public HgManifest getManifest() {
2
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136 if (this.manifest == null) {
202
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diff changeset
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
1792b37650f2 Introduced access to conflict resolution information (merge state)
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diff changeset
156 public HgBranches getBranches() {
220
8de327242aa0 Basic information about branches
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diff changeset
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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diff changeset
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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diff changeset
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
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
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parents: 114
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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parents: 0
diff changeset
182
74
6f1b88693d48 Complete refactoring to org.tmatesoft
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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
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 141
diff changeset
193 /* clients need to rewrite path from their FS to a repository-friendly paths, and, perhaps, vice versa*/
37a34044e6bd More reasonable use of path normalizer and path.source
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parents: 141
diff changeset
194 public PathRewrite getToRepoPathHelper() {
74
6f1b88693d48 Complete refactoring to org.tmatesoft
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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 }
6f1b88693d48 Complete refactoring to org.tmatesoft
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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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parents: 77
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();
c2ce1cfaeb9e ignore file with regex and 'honest' glob support
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diff changeset
213 try {
c2ce1cfaeb9e ignore file with regex and 'honest' glob support
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diff changeset
214 File ignoreFile = new File(repoDir.getParentFile(), ".hgignore");
c2ce1cfaeb9e ignore file with regex and 'honest' glob support
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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 }
c2ce1cfaeb9e ignore file with regex and 'honest' glob support
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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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parents: 68
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()) {
6f1b88693d48 Complete refactoring to org.tmatesoft
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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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parents: 68
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.
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 197
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.
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 197
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.
Artem Tikhomirov <tikhomirov.artem@gmail.com>
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.
Artem Tikhomirov <tikhomirov.artem@gmail.com>
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.
Artem Tikhomirov <tikhomirov.artem@gmail.com>
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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parents: 197
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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 }