Mercurial > hg4j
annotate src/org/tmatesoft/hg/repo/HgRepository.java @ 138:bb1d02f9eff6
clean fixme comment
| author | Artem Tikhomirov <tikhomirov.artem@gmail.com> | 
|---|---|
| date | Wed, 16 Feb 2011 22:23:30 +0100 | 
| parents | 4a948ec83980 | 
| children | 8248aae33f7d | 
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changeset | 1 /* | 
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changeset | 2 * Copyright (c) 2010-2011 TMate Software Ltd | 
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changeset | 3 * | 
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changeset | 4 * This program is free software; you can redistribute it and/or modify | 
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changeset | 5 * it under the terms of the GNU General Public License as published by | 
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changeset | 6 * the Free Software Foundation; version 2 of the License. | 
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changeset | 7 * | 
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changeset | 8 * This program is distributed in the hope that it will be useful, | 
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changeset | 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of | 
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changeset | 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | 
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changeset | 11 * GNU General Public License for more details. | 
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changeset | 12 * | 
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changeset | 13 * For information on how to redistribute this software under | 
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changeset | 14 * the terms of a license other than GNU General Public License | 
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changeset | 15 * contact TMate Software at support@hg4j.com | 
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changeset | 16 */ | 
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changeset | 17 package org.tmatesoft.hg.repo; | 
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changeset | 18 | 
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changeset | 19 import java.io.File; | 
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changeset | 20 import java.io.IOException; | 
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changeset | 21 import java.lang.ref.SoftReference; | 
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changeset | 22 import java.util.ArrayList; | 
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changeset | 23 import java.util.Collections; | 
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changeset | 24 import java.util.HashMap; | 
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changeset | 25 import java.util.List; | 
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changeset | 26 | 
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changeset | 27 import org.tmatesoft.hg.internal.ConfigFile; | 
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changeset | 28 import org.tmatesoft.hg.internal.DataAccessProvider; | 
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changeset | 29 import org.tmatesoft.hg.internal.Filter; | 
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changeset | 30 import org.tmatesoft.hg.internal.RequiresFile; | 
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changeset | 31 import org.tmatesoft.hg.internal.RevlogStream; | 
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changeset | 32 import org.tmatesoft.hg.util.FileWalker; | 
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changeset | 33 import org.tmatesoft.hg.util.Path; | 
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changeset | 34 import org.tmatesoft.hg.util.PathRewrite; | 
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changeset | 35 | 
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changeset | 36 | 
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changeset | 37 | 
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changeset | 38 /** | 
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changeset | 39 * Shall be as state-less as possible, all the caching happens outside the repo, in commands/walkers | 
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changeset | 40 * | 
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changeset | 41 * @author Artem Tikhomirov | 
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changeset | 42 * @author TMate Software Ltd. | 
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changeset | 43 */ | 
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changeset | 44 public final class HgRepository { | 
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changeset | 45 | 
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changeset | 46 public static final int TIP = -1; | 
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changeset | 47 public static final int BAD_REVISION = Integer.MIN_VALUE; | 
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changeset | 48 public static final int WORKING_COPY = -2; | 
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changeset | 49 | 
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changeset | 50 // temp aux marker method | 
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changeset | 51 public static IllegalStateException notImplemented() { | 
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changeset | 52 return new IllegalStateException("Not implemented"); | 
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changeset | 53 } | 
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changeset | 54 | 
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changeset | 55 private final File repoDir; // .hg folder | 
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changeset | 56 private final String repoLocation; | 
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changeset | 57 private final DataAccessProvider dataAccess; | 
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changeset | 58 private final PathRewrite normalizePath = new PathRewrite() { | 
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changeset | 59 | 
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changeset | 60 public String rewrite(String path) { | 
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changeset | 61 // TODO handle . and .. (although unlikely to face them from GUI client) | 
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changeset | 62 path = path.replace('\\', '/').replace("//", "/"); | 
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changeset | 63 if (path.startsWith("/")) { | 
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changeset | 64 path = path.substring(1); | 
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changeset | 65 } | 
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changeset | 66 return path; | 
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changeset | 67 } | 
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changeset | 68 }; | 
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changeset | 69 private final PathRewrite dataPathHelper; | 
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changeset | 70 private final PathRewrite repoPathHelper; | 
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changeset | 71 | 
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changeset | 72 private HgChangelog changelog; | 
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changeset | 73 private HgManifest manifest; | 
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changeset | 74 private HgTags tags; | 
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changeset | 75 // XXX perhaps, shall enable caching explicitly | 
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changeset | 76 private final HashMap<Path, SoftReference<RevlogStream>> streamsCache = new HashMap<Path, SoftReference<RevlogStream>>(); | 
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changeset | 77 | 
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changeset | 78 private final org.tmatesoft.hg.internal.Internals impl = new org.tmatesoft.hg.internal.Internals(); | 
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changeset | 79 private HgIgnore ignore; | 
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changeset | 80 private ConfigFile configFile; | 
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changeset | 81 | 
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changeset | 82 HgRepository(String repositoryPath) { | 
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changeset | 83 repoDir = null; | 
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changeset | 84 repoLocation = repositoryPath; | 
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changeset | 85 dataAccess = null; | 
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changeset | 86 dataPathHelper = repoPathHelper = null; | 
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changeset | 87 } | 
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changeset | 88 | 
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changeset | 89 HgRepository(File repositoryRoot) throws IOException { | 
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changeset | 90 assert ".hg".equals(repositoryRoot.getName()) && repositoryRoot.isDirectory(); | 
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changeset | 91 repoDir = repositoryRoot; | 
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changeset | 92 repoLocation = repositoryRoot.getParentFile().getCanonicalPath(); | 
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changeset | 93 dataAccess = new DataAccessProvider(); | 
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changeset | 94 parseRequires(); | 
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changeset | 95 dataPathHelper = impl.buildDataFilesHelper(); | 
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changeset | 96 repoPathHelper = impl.buildRepositoryFilesHelper(); | 
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changeset | 97 } | 
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changeset | 98 | 
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changeset | 99 | 
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changeset | 100 public String getLocation() { | 
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changeset | 101 return repoLocation; | 
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changeset | 102 } | 
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changeset | 103 | 
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changeset | 104 public boolean isInvalid() { | 
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changeset | 105 return repoDir == null || !repoDir.exists() || !repoDir.isDirectory(); | 
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changeset | 106 } | 
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changeset | 107 | 
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changeset | 108 public HgChangelog getChangelog() { | 
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changeset | 109 if (this.changelog == null) { | 
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changeset | 110 String storagePath = repoPathHelper.rewrite("00changelog.i"); | 
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changeset | 111 RevlogStream content = resolve(Path.create(storagePath)); | 
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changeset | 112 this.changelog = new HgChangelog(this, content); | 
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changeset | 113 } | 
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changeset | 114 return this.changelog; | 
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changeset | 115 } | 
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changeset | 116 | 
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changeset | 117 public HgManifest getManifest() { | 
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changeset | 118 if (this.manifest == null) { | 
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changeset | 119 RevlogStream content = resolve(Path.create(repoPathHelper.rewrite("00manifest.i"))); | 
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changeset | 120 this.manifest = new HgManifest(this, content); | 
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changeset | 121 } | 
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changeset | 122 return this.manifest; | 
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changeset | 123 } | 
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changeset | 124 | 
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changeset | 125 public final HgTags getTags() { | 
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changeset | 126 if (tags == null) { | 
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changeset | 127 tags = new HgTags(); | 
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changeset | 128 try { | 
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changeset | 129 tags.readGlobal(new File(repoDir.getParentFile(), ".hgtags")); | 
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changeset | 130 tags.readLocal(new File(repoDir, "localtags")); | 
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changeset | 131 } catch (IOException ex) { | 
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changeset | 132 ex.printStackTrace(); // FIXME log or othewise report | 
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changeset | 133 } | 
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changeset | 134 } | 
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changeset | 135 return tags; | 
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changeset | 136 } | 
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changeset | 137 | 
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changeset | 138 public HgDataFile getFileNode(String path) { | 
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changeset | 139 String nPath = normalizePath.rewrite(path); | 
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changeset | 140 String storagePath = dataPathHelper.rewrite(nPath); | 
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changeset | 141 RevlogStream content = resolve(Path.create(storagePath)); | 
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changeset | 142 Path p = Path.create(nPath); | 
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changeset | 143 if (content == null) { | 
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changeset | 144 return new HgDataFile(this, p); | 
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changeset | 145 } | 
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changeset | 146 return new HgDataFile(this, p, content); | 
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changeset | 147 } | 
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changeset | 148 | 
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changeset | 149 public HgDataFile getFileNode(Path path) { | 
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changeset | 150 String storagePath = dataPathHelper.rewrite(path.toString()); | 
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changeset | 151 RevlogStream content = resolve(Path.create(storagePath)); | 
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changeset | 152 // XXX no content when no file? or HgDataFile.exists() to detect that? | 
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changeset | 153 if (content == null) { | 
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changeset | 154 return new HgDataFile(this, path); | 
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changeset | 155 } | 
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changeset | 156 return new HgDataFile(this, path, content); | 
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changeset | 157 } | 
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changeset | 158 | 
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changeset | 159 public PathRewrite getPathHelper() { // Really need to be public? | 
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changeset | 160 return normalizePath; | 
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changeset | 161 } | 
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changeset | 162 | 
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changeset | 163 // local to hide use of io.File. | 
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changeset | 164 /*package-local*/ File getRepositoryRoot() { | 
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changeset | 165 return repoDir; | 
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changeset | 166 } | 
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changeset | 167 | 
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changeset | 168 // 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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changeset | 169 /*package-local*/ final HgDirstate loadDirstate() { | 
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changeset | 170 return new HgDirstate(getDataAccess(), new File(repoDir, "dirstate")); | 
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changeset | 171 } | 
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changeset | 172 | 
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changeset | 173 // package-local, see comment for loadDirstate | 
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changeset | 174 /*package-local*/ final HgIgnore getIgnore() { | 
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changeset | 175 // TODO read config for additional locations | 
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changeset | 176 if (ignore == null) { | 
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changeset | 177 ignore = new HgIgnore(); | 
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changeset | 178 try { | 
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changeset | 179 File ignoreFile = new File(repoDir.getParentFile(), ".hgignore"); | 
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changeset | 180 ignore.read(ignoreFile); | 
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changeset | 181 } catch (IOException ex) { | 
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changeset | 182 ex.printStackTrace(); // log warn | 
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changeset | 183 } | 
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changeset | 184 } | 
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changeset | 185 return ignore; | 
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changeset | 186 } | 
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changeset | 187 | 
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changeset | 188 /*package-local*/ DataAccessProvider getDataAccess() { | 
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changeset | 189 return dataAccess; | 
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changeset | 190 } | 
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changeset | 191 | 
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changeset | 192 // FIXME not sure repository shall create walkers | 
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changeset | 193 /*package-local*/ FileWalker createWorkingDirWalker() { | 
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changeset | 194 return new FileWalker(repoDir.getParentFile()); | 
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changeset | 195 } | 
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changeset | 196 | 
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changeset | 197 /** | 
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changeset | 198 * Perhaps, should be separate interface, like ContentLookup | 
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changeset | 199 * path - repository storage path (i.e. one usually with .i or .d) | 
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changeset | 200 */ | 
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changeset | 201 /*package-local*/ RevlogStream resolve(Path path) { | 
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changeset | 202 final SoftReference<RevlogStream> ref = streamsCache.get(path); | 
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changeset | 203 RevlogStream cached = ref == null ? null : ref.get(); | 
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changeset | 204 if (cached != null) { | 
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changeset | 205 return cached; | 
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changeset | 206 } | 
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changeset | 207 File f = new File(repoDir, path.toString()); | 
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changeset | 208 if (f.exists()) { | 
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changeset | 209 RevlogStream s = new RevlogStream(dataAccess, f); | 
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changeset | 210 streamsCache.put(path, new SoftReference<RevlogStream>(s)); | 
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changeset | 211 return s; | 
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changeset | 212 } | 
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changeset | 213 return null; // XXX empty stream instead? | 
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changeset | 214 } | 
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changeset | 215 | 
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changeset | 216 // can't expose internal class, otherwise seems reasonable to have it in API | 
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changeset | 217 /*package-local*/ ConfigFile getConfigFile() { | 
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changeset | 218 if (configFile == null) { | 
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changeset | 219 configFile = impl.newConfigFile(); | 
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changeset | 220 configFile.addLocation(new File(System.getProperty("user.home"), ".hgrc")); | 
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changeset | 221 // last one, overrides anything else | 
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changeset | 222 // <repo>/.hg/hgrc | 
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changeset | 223 configFile.addLocation(new File(getRepositoryRoot(), "hgrc")); | 
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changeset | 224 } | 
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changeset | 225 return configFile; | 
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changeset | 226 } | 
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changeset | 227 | 
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changeset | 228 /*package-local*/ List<Filter> getFiltersFromRepoToWorkingDir(Path p) { | 
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changeset | 229 return instantiateFilters(p, new Filter.Options(Filter.Direction.FromRepo)); | 
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changeset | 230 } | 
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changeset | 231 | 
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changeset | 232 /*package-local*/ List<Filter> getFiltersFromWorkingDirToRepo(Path p) { | 
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changeset | 233 return instantiateFilters(p, new Filter.Options(Filter.Direction.ToRepo)); | 
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changeset | 234 } | 
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changeset | 235 | 
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changeset | 236 private List<Filter> instantiateFilters(Path p, Filter.Options opts) { | 
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changeset | 237 List<Filter.Factory> factories = impl.getFilters(this, getConfigFile()); | 
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changeset | 238 if (factories.isEmpty()) { | 
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changeset | 239 return Collections.emptyList(); | 
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changeset | 240 } | 
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changeset | 241 ArrayList<Filter> rv = new ArrayList<Filter>(factories.size()); | 
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changeset | 242 for (Filter.Factory ff : factories) { | 
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changeset | 243 Filter f = ff.create(p, opts); | 
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changeset | 244 if (f != null) { | 
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changeset | 245 rv.add(f); | 
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changeset | 246 } | 
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changeset | 247 } | 
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changeset | 248 return rv; | 
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changeset | 249 } | 
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changeset | 250 | 
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changeset | 251 private void parseRequires() { | 
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changeset | 252 new RequiresFile().parse(impl, new File(repoDir, "requires")); | 
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changeset | 253 } | 
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changeset | 254 | 
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changeset | 255 } | 
