Mercurial > jhg

annotate src/org/tmatesoft/hg/repo/HgRepository.java @ 306:971baa95fb07

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Experimental code to build file history, handy access to changeset added
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 22 Sep 2011 04:05:41 +0200
parents 981f9f50bb6c
children c3d2233ba842
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.io.StringReader;
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22 import java.lang.ref.SoftReference;
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23 import java.util.ArrayList;
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24 import java.util.Collections;
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25 import java.util.HashMap;
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26 import java.util.List;
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28 import org.tmatesoft.hg.core.HgDataStreamException;
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29 import org.tmatesoft.hg.core.Nodeid;
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30 import org.tmatesoft.hg.core.SessionContext;
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31 import org.tmatesoft.hg.internal.ByteArrayChannel;
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32 import org.tmatesoft.hg.internal.ConfigFile;
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33 import org.tmatesoft.hg.internal.DataAccessProvider;
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34 import org.tmatesoft.hg.internal.Experimental;
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35 import org.tmatesoft.hg.internal.Filter;
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36 import org.tmatesoft.hg.internal.Internals;
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c677e1593919 Moved RevlogStream implementation into .internal
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37 import org.tmatesoft.hg.internal.RevlogStream;
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38 import org.tmatesoft.hg.internal.SubrepoManager;
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39 import org.tmatesoft.hg.util.CancelledException;
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40 import org.tmatesoft.hg.util.Pair;
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41 import org.tmatesoft.hg.util.Path;
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42 import org.tmatesoft.hg.util.PathPool;
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43 import org.tmatesoft.hg.util.PathRewrite;
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44 import org.tmatesoft.hg.util.ProgressSupport;
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48 /**
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49 * Shall be as state-less as possible, all the caching happens outside the repo, in commands/walkers
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50 *
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51 * @author Artem Tikhomirov
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52 * @author TMate Software Ltd.
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53 */
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54 public final class HgRepository {
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56 // if new constants added, consider fixing HgInternals#wrongLocalRevision
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57 public static final int TIP = -3;
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58 public static final int BAD_REVISION = Integer.MIN_VALUE;
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59 public static final int WORKING_COPY = -2;
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61 public static final String DEFAULT_BRANCH_NAME = "default";
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63 // temp aux marker method
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64 public static IllegalStateException notImplemented() {
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65 return new IllegalStateException("Not implemented");
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66 }
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68 private final File repoDir; // .hg folder
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69 private final File workingDir; // .hg/../
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70 private final String repoLocation;
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71 private final DataAccessProvider dataAccess;
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72 private final PathRewrite normalizePath;
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73 private final PathRewrite dataPathHelper;
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74 private final PathRewrite repoPathHelper;
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75 private final boolean isCaseSensitiveFileSystem;
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76 private final SessionContext sessionContext;
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78 private HgChangelog changelog;
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79 private HgManifest manifest;
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80 private HgTags tags;
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81 private HgBranches branches;
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82 private HgMergeState mergeState;
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83 private SubrepoManager subRepos;
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85 // XXX perhaps, shall enable caching explicitly
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86 private final HashMap<Path, SoftReference<RevlogStream>> streamsCache = new HashMap<Path, SoftReference<RevlogStream>>();
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88 private final org.tmatesoft.hg.internal.Internals impl = new org.tmatesoft.hg.internal.Internals();
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89 private HgIgnore ignore;
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90 private ConfigFile configFile;
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92 HgRepository(String repositoryPath) {
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93 repoDir = null;
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94 workingDir = null;
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95 repoLocation = repositoryPath;
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96 dataAccess = null;
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97 dataPathHelper = repoPathHelper = null;
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98 normalizePath = null;
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99 sessionContext = null;
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100 isCaseSensitiveFileSystem = !Internals.runningOnWindows();
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101 }
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103 HgRepository(SessionContext ctx, String repositoryPath, File repositoryRoot) {
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104 assert ".hg".equals(repositoryRoot.getName()) && repositoryRoot.isDirectory();
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105 assert repositoryPath != null;
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106 assert repositoryRoot != null;
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107 assert ctx != null;
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108 repoDir = repositoryRoot;
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109 workingDir = repoDir.getParentFile();
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110 if (workingDir == null) {
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111 throw new IllegalArgumentException(repoDir.toString());
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112 }
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113 repoLocation = repositoryPath;
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114 sessionContext = ctx;
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115 dataAccess = new DataAccessProvider(ctx);
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116 final boolean runningOnWindows = Internals.runningOnWindows();
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117 isCaseSensitiveFileSystem = !runningOnWindows;
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118 if (runningOnWindows) {
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119 normalizePath = new PathRewrite() {
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120
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121 public CharSequence rewrite(CharSequence p) {
142
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122 // TODO handle . and .. (although unlikely to face them from GUI client)
292
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diff changeset
123 String path = p.toString();
142
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diff changeset
124 path = path.replace('\\', '/').replace("//", "/");
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125 if (path.startsWith("/")) {
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diff changeset
126 path = path.substring(1);
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127 }
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128 return path;
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129 }
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130 };
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131 } else {
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132 normalizePath = new PathRewrite.Empty(); // or strip leading slash, perhaps?
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133 }
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diff changeset
134 impl.parseRequires(this, new File(repoDir, "requires"));
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diff changeset
135 dataPathHelper = impl.buildDataFilesHelper();
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diff changeset
136 repoPathHelper = impl.buildRepositoryFilesHelper();
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137 }
0
dbd663faec1f Basic changelog parsing
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138
145
acc6151b1b7a toString for friendly debug
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139 @Override
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140 public String toString() {
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141 return getClass().getSimpleName() + "[" + getLocation() + (isInvalid() ? "(BAD)" : "") + "]";
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142 }
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143
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144 public String getLocation() {
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145 return repoLocation;
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146 }
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147
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148 public boolean isInvalid() {
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149 return repoDir == null || !repoDir.exists() || !repoDir.isDirectory();
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150 }
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151
97
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152 public HgChangelog getChangelog() {
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153 if (this.changelog == null) {
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154 CharSequence storagePath = repoPathHelper.rewrite("00changelog.i");
202
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diff changeset
155 RevlogStream content = resolve(Path.create(storagePath), true);
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156 this.changelog = new HgChangelog(this, content);
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157 }
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158 return this.changelog;
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159 }
2
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160
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diff changeset
161 public HgManifest getManifest() {
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162 if (this.manifest == null) {
202
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diff changeset
163 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
164 this.manifest = new HgManifest(this, content);
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165 }
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166 return this.manifest;
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167 }
50
f1db8610da62 Log to consult (placeholder, for now) class to find out associated tags
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diff changeset
168
231
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diff changeset
169 public HgTags getTags() {
50
f1db8610da62 Log to consult (placeholder, for now) class to find out associated tags
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diff changeset
170 if (tags == null) {
234
b2cfbe46f9b6 HgTags got TagInfo to access tags. Tags are read from all branches/revisions now, not only working copy
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diff changeset
171 tags = new HgTags(this);
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diff changeset
172 try {
234
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diff changeset
173 HgDataFile hgTags = getFileNode(".hgtags");
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diff changeset
174 if (hgTags.exists()) {
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175 for (int i = 0; i <= hgTags.getLastRevision(); i++) { // FIXME in fact, would be handy to have walk(start,end)
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176 // method for data files as well, though it looks odd.
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diff changeset
177 try {
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diff changeset
178 ByteArrayChannel sink = new ByteArrayChannel();
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diff changeset
179 hgTags.content(i, sink);
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diff changeset
180 final String content = new String(sink.toArray(), "UTF8");
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diff changeset
181 tags.readGlobal(new StringReader(content));
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diff changeset
182 } catch (CancelledException ex) {
295
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diff changeset
183 // IGNORE, can't happen, we did not configure cancellation
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184 getContext().getLog().debug(getClass(), ex, null);
234
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diff changeset
185 } catch (HgDataStreamException ex) {
295
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diff changeset
186 getContext().getLog().error(getClass(), ex, null);
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diff changeset
187 // FIXME need to react
234
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diff changeset
188 } catch (IOException ex) {
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diff changeset
189 // UnsupportedEncodingException can't happen (UTF8)
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diff changeset
190 // only from readGlobal. Need to reconsider exceptions thrown from there
295
981f9f50bb6c Issue 11: Error log facility. SessionContext to share common facilities
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diff changeset
191 getContext().getLog().error(getClass(), ex, null);
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diff changeset
192 // XXX need to decide what to do this. failure to read single revision shall not break complete cycle
234
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diff changeset
193 }
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diff changeset
194 }
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diff changeset
195 }
252
a6d19adc2636 HgRepository.getWorkingCopyBranchName() to retrieve branch associated with working directory
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parents: 239
diff changeset
196 tags.readGlobal(new File(getWorkingDir(), ".hgtags")); // XXX replace with HgDataFile.workingCopy
104
54562de502f7 Preliminary tags implementation
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diff changeset
197 tags.readLocal(new File(repoDir, "localtags"));
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diff changeset
198 } catch (IOException ex) {
295
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diff changeset
199 getContext().getLog().error(getClass(), ex, null);
104
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diff changeset
200 }
50
f1db8610da62 Log to consult (placeholder, for now) class to find out associated tags
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diff changeset
201 }
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diff changeset
202 return tags;
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diff changeset
203 }
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diff changeset
204
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diff changeset
205 public HgBranches getBranches() {
220
8de327242aa0 Basic information about branches
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diff changeset
206 if (branches == null) {
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diff changeset
207 branches = new HgBranches(this);
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diff changeset
208 branches.collect(ProgressSupport.Factory.get(null));
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diff changeset
209 }
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diff changeset
210 return branches;
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diff changeset
211 }
231
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diff changeset
212
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diff changeset
213 @Experimental(reason="Perhaps, shall not cache instance, and provide loadMergeState as it may change often")
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diff changeset
214 public HgMergeState getMergeState() {
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diff changeset
215 if (mergeState == null) {
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diff changeset
216 mergeState = new HgMergeState(this);
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diff changeset
217 }
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diff changeset
218 return mergeState;
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diff changeset
219 }
220
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diff changeset
220
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diff changeset
221 public HgDataFile getFileNode(String path) {
292
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diff changeset
222 CharSequence nPath = normalizePath.rewrite(path);
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diff changeset
223 CharSequence storagePath = dataPathHelper.rewrite(nPath);
202
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diff changeset
224 RevlogStream content = resolve(Path.create(storagePath), false);
115
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diff changeset
225 Path p = Path.create(nPath);
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diff changeset
226 if (content == null) {
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diff changeset
227 return new HgDataFile(this, p);
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diff changeset
228 }
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diff changeset
229 return new HgDataFile(this, p, content);
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diff changeset
230 }
1
a3576694a4d1 Repository detection from local/specified directory
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diff changeset
231
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diff changeset
232 public HgDataFile getFileNode(Path path) {
292
a415fe296a50 Refactor PathRewrite to accept any char sequence, not only string
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diff changeset
233 CharSequence 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
234 RevlogStream content = resolve(Path.create(storagePath), false);
115
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diff changeset
235 // XXX no content when no file? or HgDataFile.exists() to detect that?
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diff changeset
236 if (content == null) {
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diff changeset
237 return new HgDataFile(this, path);
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diff changeset
238 }
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diff changeset
239 return new HgDataFile(this, path, content);
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diff changeset
240 }
2
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diff changeset
241
142
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diff changeset
242 /* clients need to rewrite path from their FS to a repository-friendly paths, and, perhaps, vice versa*/
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243 public PathRewrite getToRepoPathHelper() {
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244 return normalizePath;
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245 }
284
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246
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247 /**
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248 * @return pair of values, {@link Pair#first()} and {@link Pair#second()} are respective parents, never <code>null</code>.
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249 */
235
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250 public Pair<Nodeid,Nodeid> getWorkingCopyParents() {
284
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251 return HgDirstate.readParents(this, new File(repoDir, "dirstate"));
235
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252 }
252
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253
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254 /**
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255 * @return name of the branch associated with working directory, never <code>null</code>.
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256 */
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257 public String getWorkingCopyBranchName() {
284
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258 return HgDirstate.readBranch(this);
252
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259 }
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260
237
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261 /**
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262 * @return location where user files (shall) reside
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263 */
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264 public File getWorkingDir() {
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265 return workingDir;
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266 }
239
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267
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268 /**
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269 * Provides access to sub-repositories defined in this repository. Enumerated sub-repositories are those directly
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270 * known, not recursive collection of all nested sub-repositories.
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271 * @return list of all known sub-repositories in this repository, or empty list if none found.
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272 */
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273 public List<HgSubrepoLocation> getSubrepositories() {
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274 if (subRepos == null) {
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275 subRepos = new SubrepoManager(this);
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276 }
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277 return subRepos.all();
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278 }
237
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279
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280 // shall be of use only for internal classes
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281 /*package-local*/ File getRepositoryRoot() {
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282 return repoDir;
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283 }
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284
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285 // 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)
280
35125450c804 Erroneous and slow status for working copies based on non-tip revision
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286 // XXX consider passing Path pool or factory to produce (shared) Path instead of Strings
284
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287 /*package-local*/ final HgDirstate loadDirstate(PathPool pathPool) {
292
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288 PathRewrite canonicalPath = null;
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289 if (!isCaseSensitiveFileSystem) {
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290 canonicalPath = new PathRewrite() {
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291
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292 public CharSequence rewrite(CharSequence path) {
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293 return path.toString().toLowerCase();
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294 }
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295 };
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296 }
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diff changeset
297 return new HgDirstate(this, new File(repoDir, "dirstate"), pathPool, canonicalPath);
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298 }
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299
289
086a326f181f Provide public access to ignored files configuration to use in alternative file walkers
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300 /**
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diff changeset
301 * Access to configured set of ignored files.
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302 * @see HgIgnore#isIgnored(Path)
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303 */
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304 public HgIgnore getIgnore() {
91
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305 // TODO read config for additional locations
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306 if (ignore == null) {
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307 ignore = new HgIgnore();
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308 try {
252
a6d19adc2636 HgRepository.getWorkingCopyBranchName() to retrieve branch associated with working directory
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diff changeset
309 File ignoreFile = new File(getWorkingDir(), ".hgignore");
91
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diff changeset
310 ignore.read(ignoreFile);
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diff changeset
311 } catch (IOException ex) {
295
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312 getContext().getLog().warn(getClass(), ex, null);
91
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313 }
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314 }
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diff changeset
315 return ignore;
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316 }
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diff changeset
317
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318 /*package-local*/ DataAccessProvider getDataAccess() {
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diff changeset
319 return dataAccess;
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320 }
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diff changeset
321
2
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diff changeset
322 /**
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diff changeset
323 * Perhaps, should be separate interface, like ContentLookup
74
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diff changeset
324 * path - repository storage path (i.e. one usually with .i or .d)
2
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diff changeset
325 */
202
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diff changeset
326 /*package-local*/ RevlogStream resolve(Path path, boolean shallFakeNonExistent) {
74
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diff changeset
327 final SoftReference<RevlogStream> ref = streamsCache.get(path);
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diff changeset
328 RevlogStream cached = ref == null ? null : ref.get();
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329 if (cached != null) {
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330 return cached;
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331 }
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diff changeset
332 File f = new File(repoDir, path.toString());
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diff changeset
333 if (f.exists()) {
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diff changeset
334 RevlogStream s = new RevlogStream(dataAccess, f);
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diff changeset
335 streamsCache.put(path, new SoftReference<RevlogStream>(s));
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diff changeset
336 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
337 } else {
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diff changeset
338 if (shallFakeNonExistent) {
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diff changeset
339 try {
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diff changeset
340 File fake = File.createTempFile(f.getName(), null);
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diff changeset
341 fake.deleteOnExit();
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diff changeset
342 return new RevlogStream(dataAccess, fake);
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diff changeset
343 } catch (IOException ex) {
295
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344 getContext().getLog().info(getClass(), ex, null);
202
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345 }
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346 }
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347 }
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348 return null; // XXX empty stream instead?
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diff changeset
349 }
114
46291ec605a0 Filters to read and initialize according to configuration files
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diff changeset
350
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351 // can't expose internal class, otherwise seems reasonable to have it in API
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diff changeset
352 /*package-local*/ ConfigFile getConfigFile() {
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diff changeset
353 if (configFile == null) {
295
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diff changeset
354 configFile = new ConfigFile();
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diff changeset
355 try {
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diff changeset
356 configFile.addLocation(new File(System.getProperty("user.home"), ".hgrc"));
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diff changeset
357 // last one, overrides anything else
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diff changeset
358 // <repo>/.hg/hgrc
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diff changeset
359 configFile.addLocation(new File(getRepositoryRoot(), "hgrc"));
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diff changeset
360 } catch (IOException ex) {
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diff changeset
361 getContext().getLog().warn(getClass(), ex, "Errors while reading user configuration file");
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diff changeset
362 }
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363 }
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364 return configFile;
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365 }
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366
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367 /*package-local*/ List<Filter> getFiltersFromRepoToWorkingDir(Path p) {
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368 return instantiateFilters(p, new Filter.Options(Filter.Direction.FromRepo));
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369 }
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370
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371 /*package-local*/ List<Filter> getFiltersFromWorkingDirToRepo(Path p) {
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372 return instantiateFilters(p, new Filter.Options(Filter.Direction.ToRepo));
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373 }
237
6e1373b54e9b Allow access to working copy content through HgDataFile. Give access to repository's working dir
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374
6e1373b54e9b Allow access to working copy content through HgDataFile. Give access to repository's working dir
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375 /*package-local*/ File getFile(HgDataFile dataFile) {
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376 return new File(getWorkingDir(), dataFile.getPath().toString());
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377 }
295
981f9f50bb6c Issue 11: Error log facility. SessionContext to share common facilities
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378
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379 /*package-local*/ SessionContext getContext() {
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380 return sessionContext;
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381 }
114
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382
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383 private List<Filter> instantiateFilters(Path p, Filter.Options opts) {
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384 List<Filter.Factory> factories = impl.getFilters(this, getConfigFile());
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385 if (factories.isEmpty()) {
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386 return Collections.emptyList();
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387 }
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388 ArrayList<Filter> rv = new ArrayList<Filter>(factories.size());
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389 for (Filter.Factory ff : factories) {
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390 Filter f = ff.create(p, opts);
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391 if (f != null) {
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392 rv.add(f);
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393 }
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394 }
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395 return rv;
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396 }
0
dbd663faec1f Basic changelog parsing
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397 }