Mercurial > hg4j

annotate src/org/tmatesoft/hg/repo/HgRepository.java @ 222:373e07cd3991

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Due to discrepancy in manifest and changelor indexes, wrong manifest revisions got cached and compared
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 19 May 2011 05:02:07 +0200
parents 8de327242aa0
children 1ec6b327a6ac
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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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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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37 import org.tmatesoft.hg.util.ProgressSupport;
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41 /**
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42 * Shall be as state-less as possible, all the caching happens outside the repo, in commands/walkers
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43 *
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44 * @author Artem Tikhomirov
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45 * @author TMate Software Ltd.
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46 */
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47 public final class HgRepository {
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49 // if new constants added, consider fixing HgInternals#wrongLocalRevision
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50 public static final int TIP = -3;
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51 public static final int BAD_REVISION = Integer.MIN_VALUE;
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52 public static final int WORKING_COPY = -2;
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53
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54 // temp aux marker method
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55 public static IllegalStateException notImplemented() {
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56 return new IllegalStateException("Not implemented");
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57 }
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59 private final File repoDir; // .hg folder
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60 private final String repoLocation;
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61 private final DataAccessProvider dataAccess;
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62 private final PathRewrite normalizePath;
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63 private final PathRewrite dataPathHelper;
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64 private final PathRewrite repoPathHelper;
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65
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66 private HgChangelog changelog;
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67 private HgManifest manifest;
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68 private HgTags tags;
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69 private HgBranches branches;
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71 // XXX perhaps, shall enable caching explicitly
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72 private final HashMap<Path, SoftReference<RevlogStream>> streamsCache = new HashMap<Path, SoftReference<RevlogStream>>();
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73
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74 private final org.tmatesoft.hg.internal.Internals impl = new org.tmatesoft.hg.internal.Internals();
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75 private HgIgnore ignore;
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76 private ConfigFile configFile;
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78 HgRepository(String repositoryPath) {
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79 repoDir = null;
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80 repoLocation = repositoryPath;
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81 dataAccess = null;
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82 dataPathHelper = repoPathHelper = null;
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83 normalizePath = null;
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84 }
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86 HgRepository(String repositoryPath, File repositoryRoot) {
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87 assert ".hg".equals(repositoryRoot.getName()) && repositoryRoot.isDirectory();
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88 assert repositoryPath != null;
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89 assert repositoryRoot != null;
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90 repoDir = repositoryRoot;
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91 repoLocation = repositoryPath;
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92 dataAccess = new DataAccessProvider();
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93 final boolean runningOnWindows = System.getProperty("os.name").indexOf("Windows") != -1;
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94 if (runningOnWindows) {
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95 normalizePath = new PathRewrite() {
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96
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97 public String rewrite(String path) {
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98 // TODO handle . and .. (although unlikely to face them from GUI client)
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99 path = path.replace('\\', '/').replace("//", "/");
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100 if (path.startsWith("/")) {
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101 path = path.substring(1);
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102 }
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103 return path;
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104 }
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105 };
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106 } else {
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107 normalizePath = new PathRewrite.Empty(); // or strip leading slash, perhaps?
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108 }
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109 parseRequires();
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110 dataPathHelper = impl.buildDataFilesHelper();
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111 repoPathHelper = impl.buildRepositoryFilesHelper();
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112 }
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114 @Override
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115 public String toString() {
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116 return getClass().getSimpleName() + "[" + getLocation() + (isInvalid() ? "(BAD)" : "") + "]";
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117 }
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118
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119 public String getLocation() {
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120 return repoLocation;
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121 }
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122
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123 public boolean isInvalid() {
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124 return repoDir == null || !repoDir.exists() || !repoDir.isDirectory();
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125 }
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diff changeset
126
97
ee2c750b036d Changelog to HgChangelog
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127 public HgChangelog getChangelog() {
0
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128 if (this.changelog == null) {
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129 String storagePath = repoPathHelper.rewrite("00changelog.i");
202
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diff changeset
130 RevlogStream content = resolve(Path.create(storagePath), true);
97
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131 this.changelog = new HgChangelog(this, content);
0
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132 }
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133 return this.changelog;
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134 }
2
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135
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diff changeset
136 public HgManifest getManifest() {
2
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137 if (this.manifest == null) {
202
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138 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
139 this.manifest = new HgManifest(this, content);
2
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140 }
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141 return this.manifest;
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142 }
50
f1db8610da62 Log to consult (placeholder, for now) class to find out associated tags
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143
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144 public final HgTags getTags() {
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145 if (tags == null) {
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146 tags = new HgTags();
104
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147 try {
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148 tags.readGlobal(new File(repoDir.getParentFile(), ".hgtags"));
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149 tags.readLocal(new File(repoDir, "localtags"));
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150 } catch (IOException ex) {
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151 ex.printStackTrace(); // FIXME log or othewise report
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152 }
50
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153 }
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154 return tags;
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155 }
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156
220
8de327242aa0 Basic information about branches
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diff changeset
157 public final HgBranches getBranches() {
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158 if (branches == null) {
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diff changeset
159 branches = new HgBranches(this);
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diff changeset
160 branches.collect(ProgressSupport.Factory.get(null));
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diff changeset
161 }
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162 return branches;
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diff changeset
163 }
8de327242aa0 Basic information about branches
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diff changeset
164
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165 public HgDataFile getFileNode(String path) {
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diff changeset
166 String nPath = normalizePath.rewrite(path);
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diff changeset
167 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
168 RevlogStream content = resolve(Path.create(storagePath), false);
115
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diff changeset
169 Path p = Path.create(nPath);
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170 if (content == null) {
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diff changeset
171 return new HgDataFile(this, p);
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172 }
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diff changeset
173 return new HgDataFile(this, p, content);
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diff changeset
174 }
1
a3576694a4d1 Repository detection from local/specified directory
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diff changeset
175
74
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diff changeset
176 public HgDataFile getFileNode(Path path) {
77
c677e1593919 Moved RevlogStream implementation into .internal
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diff changeset
177 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
178 RevlogStream content = resolve(Path.create(storagePath), false);
115
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diff changeset
179 // XXX no content when no file? or HgDataFile.exists() to detect that?
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diff changeset
180 if (content == null) {
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181 return new HgDataFile(this, path);
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diff changeset
182 }
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diff changeset
183 return new HgDataFile(this, path, content);
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diff changeset
184 }
2
08db726a0fb7 Shaping out low-level Hg structures
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diff changeset
185
142
37a34044e6bd More reasonable use of path normalizer and path.source
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diff changeset
186 /* 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
187 public PathRewrite getToRepoPathHelper() {
74
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diff changeset
188 return normalizePath;
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diff changeset
189 }
2
08db726a0fb7 Shaping out low-level Hg structures
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diff changeset
190
114
46291ec605a0 Filters to read and initialize according to configuration files
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diff changeset
191 // local to hide use of io.File.
74
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diff changeset
192 /*package-local*/ File getRepositoryRoot() {
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diff changeset
193 return repoDir;
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194 }
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diff changeset
195
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diff changeset
196 // 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
197 /*package-local*/ final HgDirstate loadDirstate() {
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diff changeset
198 return new HgDirstate(getDataAccess(), new File(repoDir, "dirstate"));
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diff changeset
199 }
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diff changeset
200
6f1b88693d48 Complete refactoring to org.tmatesoft
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diff changeset
201 // package-local, see comment for loadDirstate
91
c2ce1cfaeb9e ignore file with regex and 'honest' glob support
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diff changeset
202 /*package-local*/ final HgIgnore getIgnore() {
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diff changeset
203 // TODO read config for additional locations
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diff changeset
204 if (ignore == null) {
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diff changeset
205 ignore = new HgIgnore();
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diff changeset
206 try {
c2ce1cfaeb9e ignore file with regex and 'honest' glob support
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diff changeset
207 File ignoreFile = new File(repoDir.getParentFile(), ".hgignore");
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diff changeset
208 ignore.read(ignoreFile);
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diff changeset
209 } catch (IOException ex) {
c2ce1cfaeb9e ignore file with regex and 'honest' glob support
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diff changeset
210 ex.printStackTrace(); // log warn
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diff changeset
211 }
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diff changeset
212 }
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diff changeset
213 return ignore;
74
6f1b88693d48 Complete refactoring to org.tmatesoft
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diff changeset
214 }
6f1b88693d48 Complete refactoring to org.tmatesoft
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diff changeset
215
6f1b88693d48 Complete refactoring to org.tmatesoft
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diff changeset
216 /*package-local*/ DataAccessProvider getDataAccess() {
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diff changeset
217 return dataAccess;
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diff changeset
218 }
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diff changeset
219
6f1b88693d48 Complete refactoring to org.tmatesoft
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diff changeset
220 // 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
221 /*package-local*/ FileIterator createWorkingDirWalker() {
8248aae33f7d Adopt FileIterator moving towards WCStatusCollector parameterizing. Improved path handling, move 'em around
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
222 File repoRoot = repoDir.getParentFile();
142
37a34044e6bd More reasonable use of path normalizer and path.source
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 141
diff changeset
223 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
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
224 // Impl note: simple source is enough as files in the working dir are all unique
8248aae33f7d Adopt FileIterator moving towards WCStatusCollector parameterizing. Improved path handling, move 'em around
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parents: 133
diff changeset
225 // 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
226 // path caching is better to be done in the code which knows that path are being reused
8248aae33f7d Adopt FileIterator moving towards WCStatusCollector parameterizing. Improved path handling, move 'em around
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diff changeset
227 return new FileWalker(repoRoot, pathSrc);
74
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diff changeset
228 }
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
229
2
08db726a0fb7 Shaping out low-level Hg structures
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diff changeset
230 /**
08db726a0fb7 Shaping out low-level Hg structures
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diff changeset
231 * Perhaps, should be separate interface, like ContentLookup
74
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diff changeset
232 * 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
233 */
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
234 /*package-local*/ RevlogStream resolve(Path path, boolean shallFakeNonExistent) {
74
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diff changeset
235 final SoftReference<RevlogStream> ref = streamsCache.get(path);
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diff changeset
236 RevlogStream cached = ref == null ? null : ref.get();
6f1b88693d48 Complete refactoring to org.tmatesoft
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diff changeset
237 if (cached != null) {
6f1b88693d48 Complete refactoring to org.tmatesoft
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diff changeset
238 return cached;
6f1b88693d48 Complete refactoring to org.tmatesoft
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diff changeset
239 }
6f1b88693d48 Complete refactoring to org.tmatesoft
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diff changeset
240 File f = new File(repoDir, path.toString());
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diff changeset
241 if (f.exists()) {
6f1b88693d48 Complete refactoring to org.tmatesoft
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diff changeset
242 RevlogStream s = new RevlogStream(dataAccess, f);
6f1b88693d48 Complete refactoring to org.tmatesoft
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diff changeset
243 streamsCache.put(path, new SoftReference<RevlogStream>(s));
6f1b88693d48 Complete refactoring to org.tmatesoft
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parents: 68
diff changeset
244 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
245 } 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
246 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
247 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
248 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
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249 fake.deleteOnExit();
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250 return new RevlogStream(dataAccess, fake);
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251 } catch (IOException ex) {
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252 ex.printStackTrace(); // FIXME report in debug
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253 }
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254 }
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255 }
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256 return null; // XXX empty stream instead?
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257 }
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258
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259 // can't expose internal class, otherwise seems reasonable to have it in API
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260 /*package-local*/ ConfigFile getConfigFile() {
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261 if (configFile == null) {
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262 configFile = impl.newConfigFile();
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263 configFile.addLocation(new File(System.getProperty("user.home"), ".hgrc"));
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264 // last one, overrides anything else
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265 // <repo>/.hg/hgrc
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266 configFile.addLocation(new File(getRepositoryRoot(), "hgrc"));
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267 }
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268 return configFile;
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269 }
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270
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271 /*package-local*/ List<Filter> getFiltersFromRepoToWorkingDir(Path p) {
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272 return instantiateFilters(p, new Filter.Options(Filter.Direction.FromRepo));
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273 }
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274
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275 /*package-local*/ List<Filter> getFiltersFromWorkingDirToRepo(Path p) {
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276 return instantiateFilters(p, new Filter.Options(Filter.Direction.ToRepo));
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277 }
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278
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279 private List<Filter> instantiateFilters(Path p, Filter.Options opts) {
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280 List<Filter.Factory> factories = impl.getFilters(this, getConfigFile());
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281 if (factories.isEmpty()) {
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282 return Collections.emptyList();
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283 }
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284 ArrayList<Filter> rv = new ArrayList<Filter>(factories.size());
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285 for (Filter.Factory ff : factories) {
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286 Filter f = ff.create(p, opts);
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287 if (f != null) {
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288 rv.add(f);
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289 }
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290 }
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291 return rv;
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292 }
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293
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294 private void parseRequires() {
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295 new RequiresFile().parse(impl, new File(repoDir, "requires"));
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296 }
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297
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298 }