Mercurial > hg4j

annotate src/org/tmatesoft/hg/repo/HgRepository.java @ 184:ec1820f64d2b

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Complete incoming cmdline client, with both lite (revisions) and complete (full changeset) information dump
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 13 Apr 2011 19:09:10 +0200
parents 1a7a9a20e1f9
children 3a7696fb457c
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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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40 /**
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41 * Shall be as state-less as possible, all the caching happens outside the repo, in commands/walkers
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42 *
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43 * @author Artem Tikhomirov
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44 * @author TMate Software Ltd.
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45 */
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46 public final class HgRepository {
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48 // if new constants added, consider fixing HgInternals#badLocalRevision
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49 public static final int TIP = -1;
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50 public static final int BAD_REVISION = Integer.MIN_VALUE;
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51 public static final int WORKING_COPY = -2;
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52
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53 // temp aux marker method
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54 public static IllegalStateException notImplemented() {
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55 return new IllegalStateException("Not implemented");
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56 }
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58 private final File repoDir; // .hg folder
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59 private final String repoLocation;
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60 private final DataAccessProvider dataAccess;
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61 private final PathRewrite normalizePath;
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62 private final PathRewrite dataPathHelper;
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63 private final PathRewrite repoPathHelper;
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64
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65 private HgChangelog changelog;
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66 private HgManifest manifest;
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67 private HgTags tags;
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68 // XXX perhaps, shall enable caching explicitly
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69 private final HashMap<Path, SoftReference<RevlogStream>> streamsCache = new HashMap<Path, SoftReference<RevlogStream>>();
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71 private final org.tmatesoft.hg.internal.Internals impl = new org.tmatesoft.hg.internal.Internals();
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72 private HgIgnore ignore;
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73 private ConfigFile configFile;
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75 HgRepository(String repositoryPath) {
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76 repoDir = null;
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77 repoLocation = repositoryPath;
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78 dataAccess = null;
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79 dataPathHelper = repoPathHelper = null;
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80 normalizePath = null;
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81 }
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83 HgRepository(String repositoryPath, File repositoryRoot) {
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84 assert ".hg".equals(repositoryRoot.getName()) && repositoryRoot.isDirectory();
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85 assert repositoryPath != null;
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86 assert repositoryRoot != null;
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87 repoDir = repositoryRoot;
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88 repoLocation = repositoryPath;
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89 dataAccess = new DataAccessProvider();
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90 final boolean runningOnWindows = System.getProperty("os.name").indexOf("Windows") != -1;
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91 if (runningOnWindows) {
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92 normalizePath = new PathRewrite() {
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93
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94 public String rewrite(String path) {
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95 // TODO handle . and .. (although unlikely to face them from GUI client)
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96 path = path.replace('\\', '/').replace("//", "/");
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97 if (path.startsWith("/")) {
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98 path = path.substring(1);
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99 }
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100 return path;
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101 }
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102 };
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103 } else {
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104 normalizePath = new PathRewrite.Empty(); // or strip leading slash, perhaps?
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105 }
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106 parseRequires();
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107 dataPathHelper = impl.buildDataFilesHelper();
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108 repoPathHelper = impl.buildRepositoryFilesHelper();
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109 }
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111 @Override
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112 public String toString() {
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113 return getClass().getSimpleName() + "[" + getLocation() + (isInvalid() ? "(BAD)" : "") + "]";
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114 }
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116 public String getLocation() {
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117 return repoLocation;
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118 }
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119
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120 public boolean isInvalid() {
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121 return repoDir == null || !repoDir.exists() || !repoDir.isDirectory();
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122 }
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123
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124 public HgChangelog getChangelog() {
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125 if (this.changelog == null) {
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diff changeset
126 String storagePath = repoPathHelper.rewrite("00changelog.i");
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127 RevlogStream content = resolve(Path.create(storagePath));
97
ee2c750b036d Changelog to HgChangelog
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128 this.changelog = new HgChangelog(this, content);
0
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129 }
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130 return this.changelog;
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131 }
2
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132
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133 public HgManifest getManifest() {
2
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134 if (this.manifest == null) {
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135 RevlogStream content = resolve(Path.create(repoPathHelper.rewrite("00manifest.i")));
13
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136 this.manifest = new HgManifest(this, content);
2
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137 }
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138 return this.manifest;
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139 }
50
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140
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141 public final HgTags getTags() {
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142 if (tags == null) {
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143 tags = new HgTags();
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144 try {
54562de502f7 Preliminary tags implementation
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145 tags.readGlobal(new File(repoDir.getParentFile(), ".hgtags"));
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146 tags.readLocal(new File(repoDir, "localtags"));
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147 } catch (IOException ex) {
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148 ex.printStackTrace(); // FIXME log or othewise report
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149 }
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150 }
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151 return tags;
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152 }
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153
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154 public HgDataFile getFileNode(String path) {
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155 String nPath = normalizePath.rewrite(path);
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156 String storagePath = dataPathHelper.rewrite(nPath);
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157 RevlogStream content = resolve(Path.create(storagePath));
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158 Path p = Path.create(nPath);
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159 if (content == null) {
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160 return new HgDataFile(this, p);
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161 }
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162 return new HgDataFile(this, p, content);
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163 }
1
a3576694a4d1 Repository detection from local/specified directory
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diff changeset
164
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165 public HgDataFile getFileNode(Path path) {
77
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166 String storagePath = dataPathHelper.rewrite(path.toString());
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167 RevlogStream content = resolve(Path.create(storagePath));
115
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168 // XXX no content when no file? or HgDataFile.exists() to detect that?
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169 if (content == null) {
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170 return new HgDataFile(this, path);
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171 }
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172 return new HgDataFile(this, path, content);
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173 }
2
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174
142
37a34044e6bd More reasonable use of path normalizer and path.source
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175 /* clients need to rewrite path from their FS to a repository-friendly paths, and, perhaps, vice versa*/
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diff changeset
176 public PathRewrite getToRepoPathHelper() {
74
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177 return normalizePath;
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178 }
2
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diff changeset
179
114
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180 // local to hide use of io.File.
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diff changeset
181 /*package-local*/ File getRepositoryRoot() {
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182 return repoDir;
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183 }
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184
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185 // XXX package-local, unless there are cases when required from outside (guess, working dir/revision walkers may hide dirstate access and no public visibility needed)
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diff changeset
186 /*package-local*/ final HgDirstate loadDirstate() {
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187 return new HgDirstate(getDataAccess(), new File(repoDir, "dirstate"));
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188 }
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189
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diff changeset
190 // package-local, see comment for loadDirstate
91
c2ce1cfaeb9e ignore file with regex and 'honest' glob support
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diff changeset
191 /*package-local*/ final HgIgnore getIgnore() {
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192 // TODO read config for additional locations
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193 if (ignore == null) {
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diff changeset
194 ignore = new HgIgnore();
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diff changeset
195 try {
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diff changeset
196 File ignoreFile = new File(repoDir.getParentFile(), ".hgignore");
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diff changeset
197 ignore.read(ignoreFile);
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198 } catch (IOException ex) {
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diff changeset
199 ex.printStackTrace(); // log warn
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200 }
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diff changeset
201 }
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diff changeset
202 return ignore;
74
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diff changeset
203 }
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204
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diff changeset
205 /*package-local*/ DataAccessProvider getDataAccess() {
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diff changeset
206 return dataAccess;
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diff changeset
207 }
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diff changeset
208
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diff changeset
209 // FIXME not sure repository shall create walkers
141
8248aae33f7d Adopt FileIterator moving towards WCStatusCollector parameterizing. Improved path handling, move 'em around
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parents: 133
diff changeset
210 /*package-local*/ FileIterator createWorkingDirWalker() {
8248aae33f7d Adopt FileIterator moving towards WCStatusCollector parameterizing. Improved path handling, move 'em around
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parents: 133
diff changeset
211 File repoRoot = repoDir.getParentFile();
142
37a34044e6bd More reasonable use of path normalizer and path.source
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parents: 141
diff changeset
212 Path.Source pathSrc = new Path.SimpleSource(new PathRewrite.Composite(new RelativePathRewrite(repoRoot), getToRepoPathHelper()));
141
8248aae33f7d Adopt FileIterator moving towards WCStatusCollector parameterizing. Improved path handling, move 'em around
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parents: 133
diff changeset
213 // Impl note: simple source is enough as files in the working dir are all unique
8248aae33f7d Adopt FileIterator moving towards WCStatusCollector parameterizing. Improved path handling, move 'em around
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parents: 133
diff changeset
214 // even if they might get reused (i.e. after FileIterator#reset() and walking once again),
8248aae33f7d Adopt FileIterator moving towards WCStatusCollector parameterizing. Improved path handling, move 'em around
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parents: 133
diff changeset
215 // path caching is better to be done in the code which knows that path are being reused
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parents: 133
diff changeset
216 return new FileWalker(repoRoot, pathSrc);
74
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diff changeset
217 }
9
d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 5
diff changeset
218
2
08db726a0fb7 Shaping out low-level Hg structures
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diff changeset
219 /**
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diff changeset
220 * Perhaps, should be separate interface, like ContentLookup
74
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diff changeset
221 * path - repository storage path (i.e. one usually with .i or .d)
2
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diff changeset
222 */
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diff changeset
223 /*package-local*/ RevlogStream resolve(Path path) {
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diff changeset
224 final SoftReference<RevlogStream> ref = streamsCache.get(path);
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diff changeset
225 RevlogStream cached = ref == null ? null : ref.get();
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diff changeset
226 if (cached != null) {
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diff changeset
227 return cached;
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diff changeset
228 }
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diff changeset
229 File f = new File(repoDir, path.toString());
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diff changeset
230 if (f.exists()) {
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diff changeset
231 RevlogStream s = new RevlogStream(dataAccess, f);
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diff changeset
232 streamsCache.put(path, new SoftReference<RevlogStream>(s));
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diff changeset
233 return s;
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diff changeset
234 }
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diff changeset
235 return null; // XXX empty stream instead?
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diff changeset
236 }
114
46291ec605a0 Filters to read and initialize according to configuration files
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diff changeset
237
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diff changeset
238 // can't expose internal class, otherwise seems reasonable to have it in API
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diff changeset
239 /*package-local*/ ConfigFile getConfigFile() {
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diff changeset
240 if (configFile == null) {
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diff changeset
241 configFile = impl.newConfigFile();
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diff changeset
242 configFile.addLocation(new File(System.getProperty("user.home"), ".hgrc"));
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diff changeset
243 // last one, overrides anything else
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diff changeset
244 // <repo>/.hg/hgrc
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diff changeset
245 configFile.addLocation(new File(getRepositoryRoot(), "hgrc"));
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diff changeset
246 }
46291ec605a0 Filters to read and initialize according to configuration files
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diff changeset
247 return configFile;
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diff changeset
248 }
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diff changeset
249
46291ec605a0 Filters to read and initialize according to configuration files
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diff changeset
250 /*package-local*/ List<Filter> getFiltersFromRepoToWorkingDir(Path p) {
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diff changeset
251 return instantiateFilters(p, new Filter.Options(Filter.Direction.FromRepo));
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252 }
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253
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254 /*package-local*/ List<Filter> getFiltersFromWorkingDirToRepo(Path p) {
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255 return instantiateFilters(p, new Filter.Options(Filter.Direction.ToRepo));
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256 }
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257
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258 private List<Filter> instantiateFilters(Path p, Filter.Options opts) {
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259 List<Filter.Factory> factories = impl.getFilters(this, getConfigFile());
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260 if (factories.isEmpty()) {
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261 return Collections.emptyList();
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262 }
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263 ArrayList<Filter> rv = new ArrayList<Filter>(factories.size());
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264 for (Filter.Factory ff : factories) {
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265 Filter f = ff.create(p, opts);
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266 if (f != null) {
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267 rv.add(f);
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268 }
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269 }
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270 return rv;
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271 }
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272
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273 private void parseRequires() {
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274 new RequiresFile().parse(impl, new File(repoDir, "requires"));
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275 }
114
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276
0
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277 }