Mercurial > jhg

annotate src/org/tmatesoft/hg/repo/HgRepository.java @ 486:d740edfff563

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Provisional support for Mercurial lock mechanism
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Fri, 10 Aug 2012 21:03:03 +0200
parents ae4d6604debd
children db48a77ec8ff
rev   line source
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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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a3a2e5deb320 Updated contact address to support@hg4j.com
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15 * contact TMate Software at support@hg4j.com
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16 */
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17 package org.tmatesoft.hg.repo;
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6c67debed07e Distinguish files in wc from files under repo root, use these constants
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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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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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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.Experimental;
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39 import org.tmatesoft.hg.internal.Filter;
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30922c728341 Better multiline log printout; options to tune default log output
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40 import org.tmatesoft.hg.internal.Internals;
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41 import org.tmatesoft.hg.internal.Lock;
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42 import org.tmatesoft.hg.internal.RevlogStream;
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43 import org.tmatesoft.hg.internal.SubrepoManager;
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44 import org.tmatesoft.hg.util.CancelledException;
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45 import org.tmatesoft.hg.util.Pair;
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46 import org.tmatesoft.hg.util.Path;
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47 import org.tmatesoft.hg.util.PathRewrite;
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48 import org.tmatesoft.hg.util.ProgressSupport;
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52 /**
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53 * Shall be as state-less as possible, all the caching happens outside the repo, in commands/walkers
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54 *
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55 * @author Artem Tikhomirov
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56 * @author TMate Software Ltd.
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57 */
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58 public final class HgRepository {
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60 // IMPORTANT: if new constants added, consider fixing HgInternals#wrongRevisionIndex and HgInvalidRevisionException#getMessage
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62 /**
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63 * Revision index constant to indicate most recent revision
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64 */
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65 public static final int TIP = -3; // XXX TIP_REVISION?
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67 /**
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68 * Revision index constant to indicate invalid revision index value.
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69 * Primary use is default/uninitialized values where user input is expected and as return value where
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70 * an exception (e.g. {@link HgInvalidRevisionException}) is not desired
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71 */
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72 public static final int BAD_REVISION = Integer.MIN_VALUE; // XXX INVALID_REVISION?
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74 /**
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75 * Revision index constant to indicate working copy
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76 */
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77 public static final int WORKING_COPY = -2; // XXX WORKING_COPY_REVISION?
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79 /**
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80 * Constant ({@value #NO_REVISION}) to indicate revision absence or a fictitious revision of an empty repository.
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81 *
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82 * <p>Revision absence is vital e.g. for missing parent from {@link HgChangelog#parents(int, int[], byte[], byte[])} call and
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83 * to report cases when changeset records no corresponding manifest
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84 * revision {@link HgManifest#walk(int, int, org.tmatesoft.hg.repo.HgManifest.Inspector)}.
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85 *
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86 * <p> Use as imaginary revision/empty repository is handy as an argument (contrary to {@link #BAD_REVISION})
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87 * e.g in a status operation to visit changes from the very beginning of a repository.
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88 */
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89 public static final int NO_REVISION = -1;
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91 /**
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92 * Name of the primary branch, "default".
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93 */
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94 public static final String DEFAULT_BRANCH_NAME = "default";
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96 // temp aux marker method
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97 public static IllegalStateException notImplemented() {
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98 return new IllegalStateException("Not implemented");
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99 }
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101 private final File repoDir; // .hg folder
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102 private final File workingDir; // .hg/../
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103 private final String repoLocation;
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104 private final DataAccessProvider dataAccess;
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105 private final PathRewrite normalizePath; // normalized slashes but otherwise regular file names
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106 private final PathRewrite dataPathHelper; // access to file storage area (usually under .hg/store/data/), with filenames mangled
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107 private final PathRewrite repoPathHelper; // access to system files
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108 private final SessionContext sessionContext;
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110 private HgChangelog changelog;
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111 private HgManifest manifest;
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112 private HgTags tags;
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113 private HgBranches branches;
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114 private HgMergeState mergeState;
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115 private SubrepoManager subRepos;
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116 private HgBookmarks bookmarks;
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118 // XXX perhaps, shall enable caching explicitly
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119 private final HashMap<Path, SoftReference<RevlogStream>> streamsCache = new HashMap<Path, SoftReference<RevlogStream>>();
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120
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121 private final org.tmatesoft.hg.internal.Internals impl;
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122 private HgIgnore ignore;
331
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123 private HgRepoConfig repoConfig;
220
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124
430
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125 /*
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126 * TODO [post-1.0] move to a better place, e.g. WorkingCopy container that tracks both dirstate and branches
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127 * (and, perhaps, undo, lastcommit and other similar information), and is change listener so that we don't need to
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128 * worry about this cached value become stale
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129 */
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130 private String wcBranch;
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131
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132
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133 HgRepository(String repositoryPath) {
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134 repoDir = null;
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135 workingDir = null;
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136 repoLocation = repositoryPath;
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137 dataAccess = null;
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138 dataPathHelper = repoPathHelper = null;
142
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139 normalizePath = null;
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140 sessionContext = null;
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141 impl = null;
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142 }
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143
425
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144 /**
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145 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
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146 */
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147 HgRepository(SessionContext ctx, String repositoryPath, File repositoryRoot) throws HgRuntimeException {
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148 assert ".hg".equals(repositoryRoot.getName()) && repositoryRoot.isDirectory();
148
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149 assert repositoryPath != null;
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150 assert repositoryRoot != null;
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151 assert ctx != null;
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152 repoDir = repositoryRoot;
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153 workingDir = repoDir.getParentFile();
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154 if (workingDir == null) {
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155 throw new IllegalArgumentException(repoDir.toString());
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156 }
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157 impl = new org.tmatesoft.hg.internal.Internals(ctx);
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158 repoLocation = repositoryPath;
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159 sessionContext = ctx;
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160 dataAccess = new DataAccessProvider(ctx);
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161 impl.parseRequires(this, new File(repoDir, "requires"));
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162 normalizePath = impl.buildNormalizePathRewrite();
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163 dataPathHelper = impl.buildDataFilesHelper();
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164 repoPathHelper = impl.buildRepositoryFilesHelper();
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165 }
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166
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167 @Override
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168 public String toString() {
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169 return getClass().getSimpleName() + "[" + getLocation() + (isInvalid() ? "(BAD)" : "") + "]";
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170 }
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171
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172 public String getLocation() {
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173 return repoLocation;
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174 }
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175
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176 public boolean isInvalid() {
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177 return repoDir == null || !repoDir.exists() || !repoDir.isDirectory();
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178 }
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179
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180 public HgChangelog getChangelog() {
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181 if (changelog == null) {
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182 CharSequence storagePath = repoPathHelper.rewrite("00changelog.i");
202
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183 RevlogStream content = resolve(Path.create(storagePath), true);
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184 changelog = new HgChangelog(this, content);
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185 }
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186 return changelog;
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187 }
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188
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189 public HgManifest getManifest() {
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190 if (manifest == null) {
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191 RevlogStream content = resolve(Path.create(repoPathHelper.rewrite("00manifest.i")), true);
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192 manifest = new HgManifest(this, content, impl.buildFileNameEncodingHelper());
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193 }
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194 return manifest;
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195 }
50
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196
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197 /**
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198 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
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199 */
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200 public HgTags getTags() throws HgInvalidControlFileException {
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201 if (tags == null) {
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202 tags = new HgTags(this);
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203 HgDataFile hgTags = getFileNode(HgTags.getPath());
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204 if (hgTags.exists()) {
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205 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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206 // method for data files as well, though it looks odd.
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207 try {
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208 ByteArrayChannel sink = new ByteArrayChannel();
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209 hgTags.content(i, sink);
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210 final String content = new String(sink.toArray(), "UTF8");
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211 tags.readGlobal(new StringReader(content));
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212 } catch (CancelledException ex) {
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213 // IGNORE, can't happen, we did not configure cancellation
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214 getContext().getLog().dump(getClass(), Debug, ex, null);
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215 } catch (IOException ex) {
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216 // UnsupportedEncodingException can't happen (UTF8)
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217 // only from readGlobal. Need to reconsider exceptions thrown from there:
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218 // BufferedReader wraps String and unlikely to throw IOException, perhaps, log is enough?
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219 getContext().getLog().dump(getClass(), Error, ex, null);
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220 // XXX need to decide what to do this. failure to read single revision shall not break complete cycle
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221 }
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222 }
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223 }
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224 File file2read = null;
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225 try {
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226 file2read = new File(getWorkingDir(), HgTags.getPath());
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227 tags.readGlobal(file2read); // XXX replace with HgDataFile.workingCopy
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228 file2read = new File(repoDir, HgLocalTags.getName());
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229 tags.readLocal(file2read);
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230 } catch (IOException ex) {
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231 getContext().getLog().dump(getClass(), Error, ex, null);
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232 throw new HgInvalidControlFileException("Failed to read tags", ex, file2read);
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233 }
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234 }
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235 return tags;
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236 }
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237
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238 /**
484
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239 * Access branch information
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240 * @return branch manager instance, never <code>null</code>
482
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241 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
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242 */
366
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243 public HgBranches getBranches() throws HgInvalidControlFileException {
220
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244 if (branches == null) {
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245 branches = new HgBranches(this);
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246 branches.collect(ProgressSupport.Factory.get(null));
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247 }
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248 return branches;
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249 }
231
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250
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251 /**
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252 * Access state of the recent merge
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253 * @return merge state facility, never <code>null</code>
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254 */
231
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255 public HgMergeState getMergeState() {
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256 if (mergeState == null) {
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257 mergeState = new HgMergeState(this);
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258 }
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259 return mergeState;
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260 }
220
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261
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262 public HgDataFile getFileNode(String path) {
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263 CharSequence nPath = normalizePath.rewrite(path);
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264 CharSequence storagePath = dataPathHelper.rewrite(nPath);
202
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265 RevlogStream content = resolve(Path.create(storagePath), false);
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266 Path p = Path.create(nPath);
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267 if (content == null) {
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268 return new HgDataFile(this, p);
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269 }
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270 return new HgDataFile(this, p, content);
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271 }
1
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272
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273 public HgDataFile getFileNode(Path path) {
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274 CharSequence storagePath = dataPathHelper.rewrite(path.toString());
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275 RevlogStream content = resolve(Path.create(storagePath), false);
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276 // XXX no content when no file? or HgDataFile.exists() to detect that?
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277 if (content == null) {
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278 return new HgDataFile(this, path);
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279 }
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280 return new HgDataFile(this, path, content);
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281 }
2
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282
142
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283 /* clients need to rewrite path from their FS to a repository-friendly paths, and, perhaps, vice versa*/
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284 public PathRewrite getToRepoPathHelper() {
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285 return normalizePath;
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286 }
284
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287
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288 /**
348
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289 * @return pair of values, {@link Pair#first()} and {@link Pair#second()} are respective parents, never <code>null</code>.
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290 * @throws HgInvalidControlFileException if attempt to read information about working copy parents from dirstate failed
284
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291 */
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292 public Pair<Nodeid,Nodeid> getWorkingCopyParents() throws HgInvalidControlFileException {
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293 return HgDirstate.readParents(this, new File(repoDir, Dirstate.getName()));
235
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294 }
252
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295
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296 /**
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297 * @return name of the branch associated with working directory, never <code>null</code>.
348
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298 * @throws HgInvalidControlFileException if attempt to read branch name failed.
252
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299 */
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300 public String getWorkingCopyBranchName() throws HgInvalidControlFileException {
430
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301 if (wcBranch == null) {
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302 wcBranch = HgDirstate.readBranch(this, new File(repoDir, "branch"));
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303 }
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304 return wcBranch;
252
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305 }
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306
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307 /**
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308 * @return location where user files (shall) reside
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309 */
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310 public File getWorkingDir() {
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311 return workingDir;
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312 }
239
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313
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314 /**
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315 * Provides access to sub-repositories defined in this repository. Enumerated sub-repositories are those directly
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316 * known, not recursive collection of all nested sub-repositories.
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317 * @return list of all known sub-repositories in this repository, or empty list if none found.
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318 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
239
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319 */
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320 public List<HgSubrepoLocation> getSubrepositories() throws HgInvalidControlFileException {
239
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321 if (subRepos == null) {
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322 subRepos = new SubrepoManager(this);
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323 subRepos.read();
239
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324 }
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325 return subRepos.all();
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326 }
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327
331
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328
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329 public HgRepoConfig getConfiguration() /* XXX throws HgInvalidControlFileException? Description of the exception suggests it is only for files under ./hg/*/ {
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330 if (repoConfig == null) {
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331 try {
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332 ConfigFile configFile = impl.readConfiguration(this, getRepositoryRoot());
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333 repoConfig = new HgRepoConfig(configFile);
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334 } catch (IOException ex) {
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335 String m = "Errors while reading user configuration file";
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336 getContext().getLog().dump(getClass(), Warn, ex, m);
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337 return new HgRepoConfig(new ConfigFile(getContext())); // empty config, do not cache, allow to try once again
331
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338 //throw new HgInvalidControlFileException(m, ex, null);
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339 }
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340 }
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341 return repoConfig;
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342 }
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343
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344 // shall be of use only for internal classes
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345 /*package-local*/ File getRepositoryRoot() {
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346 return repoDir;
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347 }
337
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348
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349 /*package-local, debug*/String getStoragePath(HgDataFile df) {
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350 // may come handy for debug
337
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351 return dataPathHelper.rewrite(df.getPath().toString()).toString();
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352 }
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353
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354 // 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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355 // XXX consider passing Path pool or factory to produce (shared) Path instead of Strings
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356 /*package-local*/ final HgDirstate loadDirstate(Path.Source pathFactory) throws HgInvalidControlFileException {
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357 PathRewrite canonicalPath = null;
388
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358 if (!impl.isCaseSensitiveFileSystem()) {
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diff changeset
359 canonicalPath = new PathRewrite() {
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360
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361 public CharSequence rewrite(CharSequence path) {
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362 return path.toString().toLowerCase();
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363 }
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364 };
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365 }
482
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366 File dirstateFile = new File(repoDir, Dirstate.getName());
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367 HgDirstate ds = new HgDirstate(this, dirstateFile, pathFactory, canonicalPath);
412
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368 ds.read(impl.buildFileNameEncodingHelper());
348
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369 return ds;
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370 }
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371
289
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372 /**
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373 * Access to configured set of ignored files.
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374 * @see HgIgnore#isIgnored(Path)
482
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375 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
289
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376 */
482
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377 public HgIgnore getIgnore() throws HgInvalidControlFileException {
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378 // TODO read config for additional locations
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379 if (ignore == null) {
409
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380 ignore = new HgIgnore(getToRepoPathHelper());
482
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381 File ignoreFile = new File(getWorkingDir(), HgIgnore.getPath());
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382 try {
335
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383 final List<String> errors = ignore.read(ignoreFile);
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384 if (errors != null) {
481
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385 getContext().getLog().dump(getClass(), Warn, "Syntax errors parsing %s:\n%s", ignoreFile.getName(), Internals.join(errors, ",\n"));
335
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386 }
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387 } catch (IOException ex) {
482
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388 final String m = String.format("Error reading %s file", ignoreFile);
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389 throw new HgInvalidControlFileException(m, ex, ignoreFile);
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390 }
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391 }
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392 return ignore;
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393 }
482
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394
481
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395 /**
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396 * Mercurial saves message user has supplied for a commit to facilitate message re-use in case commit fails.
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397 * This method provides this saved message.
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398 *
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399 * @return message used for last commit attempt, or <code>null</code> if none
482
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400 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
481
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401 */
482
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402 public String getCommitLastMessage() throws HgInvalidControlFileException {
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403 File lastMessage = new File(repoDir, LastMessage.getPath());
481
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404 if (!lastMessage.canRead()) {
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diff changeset
405 return null;
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406 }
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407 FileReader fr = null;
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408 try {
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409 fr = new FileReader(lastMessage);
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diff changeset
410 CharBuffer cb = CharBuffer.allocate(Internals.ltoi(lastMessage.length()));
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411 fr.read(cb);
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412 return cb.flip().toString();
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413 } catch (IOException ex) {
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diff changeset
414 throw new HgInvalidControlFileException("Can't retrieve message of last commit attempt", ex, lastMessage);
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diff changeset
415 } finally {
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diff changeset
416 if (fr != null) {
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diff changeset
417 try {
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diff changeset
418 fr.close();
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diff changeset
419 } catch (IOException ex) {
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diff changeset
420 getContext().getLog().dump(getClass(), Warn, "Failed to close %s after read", lastMessage);
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diff changeset
421 }
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diff changeset
422 }
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parents: 471
diff changeset
423 }
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diff changeset
424 }
486
d740edfff563 Provisional support for Mercurial lock mechanism
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diff changeset
425
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426 private Lock wdLock, storeLock;
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427
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diff changeset
428 /**
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diff changeset
429 * PROVISIONAL CODE, DO NOT USE
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diff changeset
430 *
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diff changeset
431 * Access repository lock that covers non-store parts of the repository (dirstate, branches, etc -
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diff changeset
432 * everything that has to do with working directory state).
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diff changeset
433 *
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diff changeset
434 * Note, the lock object returned merely gives access to lock mechanism. NO ACTUAL LOCKING IS DONE.
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diff changeset
435 * Use {@link Lock#acquire()} to actually lock the repository.
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diff changeset
436 *
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diff changeset
437 * @return lock object, never <code>null</code>
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diff changeset
438 */
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diff changeset
439 @Experimental(reason="WORK IN PROGRESS")
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diff changeset
440 public Lock getWorkingDirLock() {
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diff changeset
441 if (wdLock == null) {
d740edfff563 Provisional support for Mercurial lock mechanism
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diff changeset
442 synchronized (this) {
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diff changeset
443 if (wdLock == null) {
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diff changeset
444 wdLock = new Lock(new File(repoPathHelper.rewrite("wlock").toString()));
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diff changeset
445 }
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parents: 484
diff changeset
446 }
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diff changeset
447 }
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diff changeset
448 return wdLock;
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diff changeset
449 }
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diff changeset
450
d740edfff563 Provisional support for Mercurial lock mechanism
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diff changeset
451 @Experimental(reason="WORK IN PROGRESS")
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diff changeset
452 public Lock getStoreLock() {
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453 if (storeLock == null) {
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diff changeset
454 synchronized (this) {
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diff changeset
455 if (storeLock == null) {
d740edfff563 Provisional support for Mercurial lock mechanism
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diff changeset
456 storeLock = new Lock(new File(repoPathHelper.rewrite("store/lock").toString()));
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diff changeset
457 }
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diff changeset
458 }
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diff changeset
459 }
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diff changeset
460 return storeLock;
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diff changeset
461 }
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diff changeset
462
484
ae4d6604debd Bookmarks support added
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diff changeset
463 /**
ae4d6604debd Bookmarks support added
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parents: 483
diff changeset
464 * Access bookmarks-related functionality
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diff changeset
465 * @return facility to manage bookmarks, never <code>null</code>
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diff changeset
466 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
ae4d6604debd Bookmarks support added
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diff changeset
467 */
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diff changeset
468 public HgBookmarks getBookmarks() throws HgInvalidControlFileException {
ae4d6604debd Bookmarks support added
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diff changeset
469 if (bookmarks == null) {
ae4d6604debd Bookmarks support added
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diff changeset
470 bookmarks = new HgBookmarks(this);
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diff changeset
471 bookmarks.read();
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diff changeset
472 }
ae4d6604debd Bookmarks support added
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diff changeset
473 return bookmarks;
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diff changeset
474 }
74
6f1b88693d48 Complete refactoring to org.tmatesoft
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diff changeset
475
6f1b88693d48 Complete refactoring to org.tmatesoft
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diff changeset
476 /*package-local*/ DataAccessProvider getDataAccess() {
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diff changeset
477 return dataAccess;
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diff changeset
478 }
6f1b88693d48 Complete refactoring to org.tmatesoft
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parents: 68
diff changeset
479
2
08db726a0fb7 Shaping out low-level Hg structures
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parents: 1
diff changeset
480 /**
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diff changeset
481 * Perhaps, should be separate interface, like ContentLookup
74
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diff changeset
482 * path - repository storage path (i.e. one usually with .i or .d)
2
08db726a0fb7 Shaping out low-level Hg structures
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diff changeset
483 */
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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parents: 197
diff changeset
484 /*package-local*/ RevlogStream resolve(Path path, boolean shallFakeNonExistent) {
74
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diff changeset
485 final SoftReference<RevlogStream> ref = streamsCache.get(path);
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diff changeset
486 RevlogStream cached = ref == null ? null : ref.get();
6f1b88693d48 Complete refactoring to org.tmatesoft
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diff changeset
487 if (cached != null) {
6f1b88693d48 Complete refactoring to org.tmatesoft
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diff changeset
488 return cached;
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diff changeset
489 }
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diff changeset
490 File f = new File(repoDir, path.toString());
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diff changeset
491 if (f.exists()) {
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492 RevlogStream s = new RevlogStream(dataAccess, f);
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493 if (impl.shallCacheRevlogs()) {
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494 streamsCache.put(path, new SoftReference<RevlogStream>(s));
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495 }
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496 return s;
202
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497 } else {
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498 if (shallFakeNonExistent) {
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499 try {
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500 File fake = File.createTempFile(f.getName(), null);
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501 fake.deleteOnExit();
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502 return new RevlogStream(dataAccess, fake);
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503 } catch (IOException ex) {
456
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504 getContext().getLog().dump(getClass(), Info, ex, null);
202
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505 }
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506 }
74
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507 }
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508 return null; // XXX empty stream instead?
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509 }
114
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510
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511 /*package-local*/ List<Filter> getFiltersFromRepoToWorkingDir(Path p) {
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512 return instantiateFilters(p, new Filter.Options(Filter.Direction.FromRepo));
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513 }
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514
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515 /*package-local*/ List<Filter> getFiltersFromWorkingDirToRepo(Path p) {
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516 return instantiateFilters(p, new Filter.Options(Filter.Direction.ToRepo));
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517 }
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518
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519 /*package-local*/ File getFile(HgDataFile dataFile) {
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diff changeset
520 return new File(getWorkingDir(), dataFile.getPath().toString());
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521 }
295
981f9f50bb6c Issue 11: Error log facility. SessionContext to share common facilities
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522
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523 /*package-local*/ SessionContext getContext() {
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524 return sessionContext;
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525 }
412
63c5a9d7ca3f Follow-up for Issue 29: unify path translation for manifest and dirstate
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diff changeset
526
63c5a9d7ca3f Follow-up for Issue 29: unify path translation for manifest and dirstate
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diff changeset
527 /*package-local*/ Internals getImplHelper() {
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528 return impl;
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529 }
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530
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531 private List<Filter> instantiateFilters(Path p, Filter.Options opts) {
331
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532 List<Filter.Factory> factories = impl.getFilters(this);
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533 if (factories.isEmpty()) {
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534 return Collections.emptyList();
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535 }
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536 ArrayList<Filter> rv = new ArrayList<Filter>(factories.size());
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diff changeset
537 for (Filter.Factory ff : factories) {
46291ec605a0 Filters to read and initialize according to configuration files
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diff changeset
538 Filter f = ff.create(p, opts);
46291ec605a0 Filters to read and initialize according to configuration files
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diff changeset
539 if (f != null) {
46291ec605a0 Filters to read and initialize according to configuration files
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diff changeset
540 rv.add(f);
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diff changeset
541 }
46291ec605a0 Filters to read and initialize according to configuration files
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diff changeset
542 }
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diff changeset
543 return rv;
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diff changeset
544 }
0
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
545 }