Mercurial > hg4j
annotate src/org/tmatesoft/hg/repo/HgRepository.java @ 483:e31e85cf4d4c
Handle include and unset directives in config files
author | Artem Tikhomirov <tikhomirov.artem@gmail.com> |
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date | Tue, 07 Aug 2012 19:14:53 +0200 |
parents | 6c67debed07e |
children | ae4d6604debd |
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1 /* |
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2 * Copyright (c) 2010-2012 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 static org.tmatesoft.hg.repo.HgRepositoryFiles.*; |
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20 import static org.tmatesoft.hg.util.LogFacility.Severity.*; |
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21 |
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22 import java.io.File; |
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23 import java.io.FileReader; |
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24 import java.io.IOException; |
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25 import java.io.StringReader; |
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26 import java.lang.ref.SoftReference; |
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27 import java.nio.CharBuffer; |
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28 import java.util.ArrayList; |
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29 import java.util.Collections; |
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30 import java.util.HashMap; |
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31 import java.util.List; |
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32 |
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33 import org.tmatesoft.hg.core.Nodeid; |
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34 import org.tmatesoft.hg.core.SessionContext; |
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35 import org.tmatesoft.hg.internal.ByteArrayChannel; |
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36 import org.tmatesoft.hg.internal.ConfigFile; |
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37 import org.tmatesoft.hg.internal.DataAccessProvider; |
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38 import org.tmatesoft.hg.internal.Filter; |
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39 import org.tmatesoft.hg.internal.Internals; |
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40 import org.tmatesoft.hg.internal.RevlogStream; |
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41 import org.tmatesoft.hg.internal.SubrepoManager; |
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42 import org.tmatesoft.hg.util.CancelledException; |
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43 import org.tmatesoft.hg.util.Pair; |
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44 import org.tmatesoft.hg.util.Path; |
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45 import org.tmatesoft.hg.util.PathRewrite; |
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Basic information about branches
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46 import org.tmatesoft.hg.util.ProgressSupport; |
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47 |
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48 |
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49 |
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50 /** |
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51 * Shall be as state-less as possible, all the caching happens outside the repo, in commands/walkers |
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52 * |
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53 * @author Artem Tikhomirov |
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54 * @author TMate Software Ltd. |
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55 */ |
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56 public final class HgRepository { |
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57 |
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58 // IMPORTANT: if new constants added, consider fixing HgInternals#wrongRevisionIndex and HgInvalidRevisionException#getMessage |
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59 |
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60 /** |
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61 * Revision index constant to indicate most recent revision |
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62 */ |
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63 public static final int TIP = -3; // XXX TIP_REVISION? |
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64 |
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65 /** |
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66 * Revision index constant to indicate invalid revision index value. |
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67 * Primary use is default/uninitialized values where user input is expected and as return value where |
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68 * an exception (e.g. {@link HgInvalidRevisionException}) is not desired |
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69 */ |
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70 public static final int BAD_REVISION = Integer.MIN_VALUE; // XXX INVALID_REVISION? |
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71 |
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72 /** |
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73 * Revision index constant to indicate working copy |
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74 */ |
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75 public static final int WORKING_COPY = -2; // XXX WORKING_COPY_REVISION? |
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76 |
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77 /** |
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78 * Constant ({@value #NO_REVISION}) to indicate revision absence or a fictitious revision of an empty repository. |
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79 * |
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80 * <p>Revision absence is vital e.g. for missing parent from {@link HgChangelog#parents(int, int[], byte[], byte[])} call and |
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81 * to report cases when changeset records no corresponding manifest |
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82 * revision {@link HgManifest#walk(int, int, org.tmatesoft.hg.repo.HgManifest.Inspector)}. |
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83 * |
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84 * <p> Use as imaginary revision/empty repository is handy as an argument (contrary to {@link #BAD_REVISION}) |
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85 * e.g in a status operation to visit changes from the very beginning of a repository. |
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86 */ |
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87 public static final int NO_REVISION = -1; |
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88 |
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89 /** |
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90 * Name of the primary branch, "default". |
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91 */ |
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92 public static final String DEFAULT_BRANCH_NAME = "default"; |
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93 |
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94 // temp aux marker method |
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95 public static IllegalStateException notImplemented() { |
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96 return new IllegalStateException("Not implemented"); |
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97 } |
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98 |
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99 private final File repoDir; // .hg folder |
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100 private final File workingDir; // .hg/../ |
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101 private final String repoLocation; |
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102 private final DataAccessProvider dataAccess; |
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103 private final PathRewrite normalizePath; // normalized slashes but otherwise regular file names |
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104 private final PathRewrite dataPathHelper; // access to file storage area (usually under .hg/store/data/), with filenames mangled |
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105 private final PathRewrite repoPathHelper; // access to system files |
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106 private final SessionContext sessionContext; |
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107 |
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108 private HgChangelog changelog; |
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109 private HgManifest manifest; |
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110 private HgTags tags; |
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111 private HgBranches branches; |
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112 private HgMergeState mergeState; |
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113 private SubrepoManager subRepos; |
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114 |
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115 // XXX perhaps, shall enable caching explicitly |
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116 private final HashMap<Path, SoftReference<RevlogStream>> streamsCache = new HashMap<Path, SoftReference<RevlogStream>>(); |
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117 |
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118 private final org.tmatesoft.hg.internal.Internals impl; |
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119 private HgIgnore ignore; |
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120 private HgRepoConfig repoConfig; |
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121 |
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122 /* |
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123 * TODO [post-1.0] move to a better place, e.g. WorkingCopy container that tracks both dirstate and branches |
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124 * (and, perhaps, undo, lastcommit and other similar information), and is change listener so that we don't need to |
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125 * worry about this cached value become stale |
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126 */ |
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127 private String wcBranch; |
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128 |
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129 |
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130 HgRepository(String repositoryPath) { |
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131 repoDir = null; |
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132 workingDir = null; |
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133 repoLocation = repositoryPath; |
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134 dataAccess = null; |
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135 dataPathHelper = repoPathHelper = null; |
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136 normalizePath = null; |
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137 sessionContext = null; |
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138 impl = null; |
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139 } |
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140 |
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141 /** |
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142 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em> |
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143 */ |
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144 HgRepository(SessionContext ctx, String repositoryPath, File repositoryRoot) throws HgRuntimeException { |
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145 assert ".hg".equals(repositoryRoot.getName()) && repositoryRoot.isDirectory(); |
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146 assert repositoryPath != null; |
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147 assert repositoryRoot != null; |
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148 assert ctx != null; |
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149 repoDir = repositoryRoot; |
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150 workingDir = repoDir.getParentFile(); |
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151 if (workingDir == null) { |
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152 throw new IllegalArgumentException(repoDir.toString()); |
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153 } |
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154 impl = new org.tmatesoft.hg.internal.Internals(ctx); |
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155 repoLocation = repositoryPath; |
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156 sessionContext = ctx; |
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157 dataAccess = new DataAccessProvider(ctx); |
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158 impl.parseRequires(this, new File(repoDir, "requires")); |
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159 normalizePath = impl.buildNormalizePathRewrite(); |
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160 dataPathHelper = impl.buildDataFilesHelper(); |
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161 repoPathHelper = impl.buildRepositoryFilesHelper(); |
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162 } |
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163 |
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164 @Override |
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165 public String toString() { |
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166 return getClass().getSimpleName() + "[" + getLocation() + (isInvalid() ? "(BAD)" : "") + "]"; |
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167 } |
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168 |
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169 public String getLocation() { |
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170 return repoLocation; |
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171 } |
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172 |
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173 public boolean isInvalid() { |
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174 return repoDir == null || !repoDir.exists() || !repoDir.isDirectory(); |
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175 } |
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176 |
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177 public HgChangelog getChangelog() { |
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178 if (changelog == null) { |
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179 CharSequence storagePath = repoPathHelper.rewrite("00changelog.i"); |
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180 RevlogStream content = resolve(Path.create(storagePath), true); |
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181 changelog = new HgChangelog(this, content); |
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182 } |
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183 return changelog; |
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184 } |
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185 |
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186 public HgManifest getManifest() { |
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187 if (manifest == null) { |
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188 RevlogStream content = resolve(Path.create(repoPathHelper.rewrite("00manifest.i")), true); |
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189 manifest = new HgManifest(this, content, impl.buildFileNameEncodingHelper()); |
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190 } |
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191 return manifest; |
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192 } |
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193 |
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194 /** |
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195 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em> |
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196 */ |
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197 public HgTags getTags() throws HgInvalidControlFileException { |
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198 if (tags == null) { |
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199 tags = new HgTags(this); |
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200 HgDataFile hgTags = getFileNode(HgTags.getPath()); |
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201 if (hgTags.exists()) { |
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202 for (int i = 0; i <= hgTags.getLastRevision(); i++) { // TODO post-1.0 in fact, would be handy to have walk(start,end) |
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203 // method for data files as well, though it looks odd. |
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204 try { |
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205 ByteArrayChannel sink = new ByteArrayChannel(); |
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206 hgTags.content(i, sink); |
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207 final String content = new String(sink.toArray(), "UTF8"); |
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208 tags.readGlobal(new StringReader(content)); |
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209 } catch (CancelledException ex) { |
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210 // IGNORE, can't happen, we did not configure cancellation |
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211 getContext().getLog().dump(getClass(), Debug, ex, null); |
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212 } catch (IOException ex) { |
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213 // UnsupportedEncodingException can't happen (UTF8) |
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214 // only from readGlobal. Need to reconsider exceptions thrown from there: |
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215 // BufferedReader wraps String and unlikely to throw IOException, perhaps, log is enough? |
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216 getContext().getLog().dump(getClass(), Error, ex, null); |
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217 // XXX need to decide what to do this. failure to read single revision shall not break complete cycle |
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218 } |
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219 } |
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220 } |
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221 File file2read = null; |
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222 try { |
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223 file2read = new File(getWorkingDir(), HgTags.getPath()); |
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224 tags.readGlobal(file2read); // XXX replace with HgDataFile.workingCopy |
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225 file2read = new File(repoDir, HgLocalTags.getName()); |
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226 tags.readLocal(file2read); |
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227 } catch (IOException ex) { |
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228 getContext().getLog().dump(getClass(), Error, ex, null); |
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229 throw new HgInvalidControlFileException("Failed to read tags", ex, file2read); |
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230 } |
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231 } |
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232 return tags; |
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233 } |
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234 |
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235 /** |
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236 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em> |
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237 */ |
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238 public HgBranches getBranches() throws HgInvalidControlFileException { |
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239 if (branches == null) { |
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240 branches = new HgBranches(this); |
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241 branches.collect(ProgressSupport.Factory.get(null)); |
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242 } |
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243 return branches; |
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244 } |
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245 |
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246 public HgMergeState getMergeState() { |
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247 if (mergeState == null) { |
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248 mergeState = new HgMergeState(this); |
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249 } |
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250 return mergeState; |
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251 } |
220
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252 |
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253 public HgDataFile getFileNode(String path) { |
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254 CharSequence nPath = normalizePath.rewrite(path); |
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255 CharSequence storagePath = dataPathHelper.rewrite(nPath); |
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256 RevlogStream content = resolve(Path.create(storagePath), false); |
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257 Path p = Path.create(nPath); |
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258 if (content == null) { |
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259 return new HgDataFile(this, p); |
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260 } |
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261 return new HgDataFile(this, p, content); |
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262 } |
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263 |
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264 public HgDataFile getFileNode(Path path) { |
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265 CharSequence storagePath = dataPathHelper.rewrite(path.toString()); |
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266 RevlogStream content = resolve(Path.create(storagePath), false); |
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267 // XXX no content when no file? or HgDataFile.exists() to detect that? |
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268 if (content == null) { |
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269 return new HgDataFile(this, path); |
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270 } |
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271 return new HgDataFile(this, path, content); |
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272 } |
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273 |
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274 /* clients need to rewrite path from their FS to a repository-friendly paths, and, perhaps, vice versa*/ |
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275 public PathRewrite getToRepoPathHelper() { |
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276 return normalizePath; |
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277 } |
284
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278 |
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279 /** |
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280 * @return pair of values, {@link Pair#first()} and {@link Pair#second()} are respective parents, never <code>null</code>. |
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281 * @throws HgInvalidControlFileException if attempt to read information about working copy parents from dirstate failed |
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282 */ |
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283 public Pair<Nodeid,Nodeid> getWorkingCopyParents() throws HgInvalidControlFileException { |
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284 return HgDirstate.readParents(this, new File(repoDir, Dirstate.getName())); |
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285 } |
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286 |
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287 /** |
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288 * @return name of the branch associated with working directory, never <code>null</code>. |
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289 * @throws HgInvalidControlFileException if attempt to read branch name failed. |
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290 */ |
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291 public String getWorkingCopyBranchName() throws HgInvalidControlFileException { |
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292 if (wcBranch == null) { |
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293 wcBranch = HgDirstate.readBranch(this, new File(repoDir, "branch")); |
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294 } |
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295 return wcBranch; |
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296 } |
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297 |
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298 /** |
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299 * @return location where user files (shall) reside |
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300 */ |
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301 public File getWorkingDir() { |
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302 return workingDir; |
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303 } |
239
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304 |
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305 /** |
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306 * Provides access to sub-repositories defined in this repository. Enumerated sub-repositories are those directly |
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307 * known, not recursive collection of all nested sub-repositories. |
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308 * @return list of all known sub-repositories in this repository, or empty list if none found. |
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309 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em> |
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310 */ |
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311 public List<HgSubrepoLocation> getSubrepositories() throws HgInvalidControlFileException { |
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312 if (subRepos == null) { |
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313 subRepos = new SubrepoManager(this); |
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314 subRepos.read(); |
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315 } |
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316 return subRepos.all(); |
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317 } |
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318 |
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319 |
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320 public HgRepoConfig getConfiguration() /* XXX throws HgInvalidControlFileException? Description of the exception suggests it is only for files under ./hg/*/ { |
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321 if (repoConfig == null) { |
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322 try { |
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323 ConfigFile configFile = impl.readConfiguration(this, getRepositoryRoot()); |
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324 repoConfig = new HgRepoConfig(configFile); |
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325 } catch (IOException ex) { |
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326 String m = "Errors while reading user configuration file"; |
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327 getContext().getLog().dump(getClass(), Warn, ex, m); |
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328 return new HgRepoConfig(new ConfigFile(getContext())); // empty config, do not cache, allow to try once again |
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329 //throw new HgInvalidControlFileException(m, ex, null); |
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330 } |
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331 } |
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332 return repoConfig; |
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333 } |
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334 |
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335 // shall be of use only for internal classes |
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336 /*package-local*/ File getRepositoryRoot() { |
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337 return repoDir; |
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338 } |
337
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339 |
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340 /*package-local, debug*/String getStoragePath(HgDataFile df) { |
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341 // may come handy for debug |
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342 return dataPathHelper.rewrite(df.getPath().toString()).toString(); |
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343 } |
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344 |
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345 // 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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346 // XXX consider passing Path pool or factory to produce (shared) Path instead of Strings |
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347 /*package-local*/ final HgDirstate loadDirstate(Path.Source pathFactory) throws HgInvalidControlFileException { |
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348 PathRewrite canonicalPath = null; |
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349 if (!impl.isCaseSensitiveFileSystem()) { |
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350 canonicalPath = new PathRewrite() { |
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351 |
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352 public CharSequence rewrite(CharSequence path) { |
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353 return path.toString().toLowerCase(); |
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354 } |
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355 }; |
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356 } |
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357 File dirstateFile = new File(repoDir, Dirstate.getName()); |
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358 HgDirstate ds = new HgDirstate(this, dirstateFile, pathFactory, canonicalPath); |
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359 ds.read(impl.buildFileNameEncodingHelper()); |
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360 return ds; |
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361 } |
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362 |
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363 /** |
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364 * Access to configured set of ignored files. |
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365 * @see HgIgnore#isIgnored(Path) |
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366 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em> |
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367 */ |
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368 public HgIgnore getIgnore() throws HgInvalidControlFileException { |
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369 // TODO read config for additional locations |
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370 if (ignore == null) { |
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371 ignore = new HgIgnore(getToRepoPathHelper()); |
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372 File ignoreFile = new File(getWorkingDir(), HgIgnore.getPath()); |
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373 try { |
335
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374 final List<String> errors = ignore.read(ignoreFile); |
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375 if (errors != null) { |
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376 getContext().getLog().dump(getClass(), Warn, "Syntax errors parsing %s:\n%s", ignoreFile.getName(), Internals.join(errors, ",\n")); |
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377 } |
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378 } catch (IOException ex) { |
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379 final String m = String.format("Error reading %s file", ignoreFile); |
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380 throw new HgInvalidControlFileException(m, ex, ignoreFile); |
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381 } |
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382 } |
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383 return ignore; |
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384 } |
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385 |
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386 /** |
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387 * Mercurial saves message user has supplied for a commit to facilitate message re-use in case commit fails. |
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388 * This method provides this saved message. |
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389 * |
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390 * @return message used for last commit attempt, or <code>null</code> if none |
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391 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em> |
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392 */ |
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393 public String getCommitLastMessage() throws HgInvalidControlFileException { |
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394 File lastMessage = new File(repoDir, LastMessage.getPath()); |
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395 if (!lastMessage.canRead()) { |
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396 return null; |
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397 } |
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398 FileReader fr = null; |
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399 try { |
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400 fr = new FileReader(lastMessage); |
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401 CharBuffer cb = CharBuffer.allocate(Internals.ltoi(lastMessage.length())); |
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402 fr.read(cb); |
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403 return cb.flip().toString(); |
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404 } catch (IOException ex) { |
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405 throw new HgInvalidControlFileException("Can't retrieve message of last commit attempt", ex, lastMessage); |
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406 } finally { |
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407 if (fr != null) { |
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408 try { |
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409 fr.close(); |
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410 } catch (IOException ex) { |
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411 getContext().getLog().dump(getClass(), Warn, "Failed to close %s after read", lastMessage); |
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412 } |
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413 } |
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414 } |
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415 } |
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416 |
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417 /*package-local*/ DataAccessProvider getDataAccess() { |
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418 return dataAccess; |
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419 } |
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420 |
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421 /** |
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422 * Perhaps, should be separate interface, like ContentLookup |
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423 * path - repository storage path (i.e. one usually with .i or .d) |
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424 */ |
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425 /*package-local*/ RevlogStream resolve(Path path, boolean shallFakeNonExistent) { |
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426 final SoftReference<RevlogStream> ref = streamsCache.get(path); |
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427 RevlogStream cached = ref == null ? null : ref.get(); |
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428 if (cached != null) { |
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429 return cached; |
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430 } |
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431 File f = new File(repoDir, path.toString()); |
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432 if (f.exists()) { |
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433 RevlogStream s = new RevlogStream(dataAccess, f); |
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434 if (impl.shallCacheRevlogs()) { |
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435 streamsCache.put(path, new SoftReference<RevlogStream>(s)); |
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436 } |
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437 return s; |
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438 } else { |
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439 if (shallFakeNonExistent) { |
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440 try { |
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441 File fake = File.createTempFile(f.getName(), null); |
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442 fake.deleteOnExit(); |
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443 return new RevlogStream(dataAccess, fake); |
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444 } catch (IOException ex) { |
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445 getContext().getLog().dump(getClass(), Info, ex, null); |
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446 } |
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447 } |
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448 } |
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449 return null; // XXX empty stream instead? |
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450 } |
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451 |
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452 /*package-local*/ List<Filter> getFiltersFromRepoToWorkingDir(Path p) { |
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453 return instantiateFilters(p, new Filter.Options(Filter.Direction.FromRepo)); |
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454 } |
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455 |
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456 /*package-local*/ List<Filter> getFiltersFromWorkingDirToRepo(Path p) { |
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457 return instantiateFilters(p, new Filter.Options(Filter.Direction.ToRepo)); |
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458 } |
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459 |
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460 /*package-local*/ File getFile(HgDataFile dataFile) { |
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461 return new File(getWorkingDir(), dataFile.getPath().toString()); |
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462 } |
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463 |
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464 /*package-local*/ SessionContext getContext() { |
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465 return sessionContext; |
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466 } |
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467 |
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468 /*package-local*/ Internals getImplHelper() { |
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469 return impl; |
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470 } |
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471 |
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472 private List<Filter> instantiateFilters(Path p, Filter.Options opts) { |
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473 List<Filter.Factory> factories = impl.getFilters(this); |
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474 if (factories.isEmpty()) { |
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475 return Collections.emptyList(); |
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476 } |
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477 ArrayList<Filter> rv = new ArrayList<Filter>(factories.size()); |
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478 for (Filter.Factory ff : factories) { |
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479 Filter f = ff.create(p, opts); |
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480 if (f != null) { |
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481 rv.add(f); |
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482 } |
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483 } |
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484 return rv; |
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485 } |
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486 } |