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annotate src/org/tmatesoft/hg/repo/HgRepository.java @ 295:981f9f50bb6c

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Issue 11: Error log facility. SessionContext to share common facilities
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Fri, 16 Sep 2011 05:35:32 +0200
parents a415fe296a50
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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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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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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62
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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 }