Mercurial > hg4j

annotate src/com/tmate/hgkit/ll/LocalHgRepo.java @ 21:e929cecae4e1

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Refactor to move revlog content to base class
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 05 Jan 2011 04:10:28 +0100
parents 11cfabe692b3
children 603806cd2dc6
rev   line source
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1 /*
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2 * Copyright (c) 2010, 2011 Artem Tikhomirov
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3 */
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4 package com.tmate.hgkit.ll;
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5
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6 import java.io.BufferedReader;
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7 import java.io.File;
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8 import java.io.FileInputStream;
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9 import java.io.IOException;
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10 import java.io.InputStreamReader;
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11 import java.lang.ref.SoftReference;
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12 import java.util.Arrays;
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13 import java.util.HashMap;
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14 import java.util.LinkedList;
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15 import java.util.TreeSet;
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16
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17 import com.tmate.hgkit.fs.DataAccessProvider;
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18
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19 /**
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20 * @author artem
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21 */
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22 public class LocalHgRepo extends HgRepository {
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23
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24 private File repoDir; // .hg folder
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25 private final String repoLocation;
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26 private final DataAccessProvider dataAccess;
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27
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28 public LocalHgRepo(String repositoryPath) {
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29 setInvalid(true);
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30 repoLocation = repositoryPath;
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31 dataAccess = null;
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32 }
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33
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34 public LocalHgRepo(File repositoryRoot) throws IOException {
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35 assert ".hg".equals(repositoryRoot.getName()) && repositoryRoot.isDirectory();
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36 setInvalid(false);
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37 repoDir = repositoryRoot;
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38 repoLocation = repositoryRoot.getParentFile().getCanonicalPath();
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39 dataAccess = new DataAccessProvider();
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40 parseRequires();
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41 }
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42
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43 @Override
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44 public String getLocation() {
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45 return repoLocation;
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46 }
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47
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48 @Override
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49 public void status(int rev1, int rev2, final StatusInspector inspector) {
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50 final ManifestRevisionCollector collect = new ManifestRevisionCollector();
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51 getManifest().walk(rev1, rev1, collect);
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52
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53 HgManifest.Inspector compare = new HgManifest.Inspector() {
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54
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55 public boolean begin(int revision, Nodeid nid) {
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56 return true;
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57 }
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58
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59 public boolean next(Nodeid nid, String fname, String flags) {
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60 Nodeid nidR1 = collect.idsMap.remove(fname);
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61 String flagsR1 = collect.flagsMap.remove(fname);
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62 if (nidR1 == null) {
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63 inspector.added(fname);
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64 } else {
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65 if (nidR1.compareTo(nid) == 0 && ((flags == null && flagsR1 == null) || flags.equals(flagsR1))) {
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66 inspector.clean(fname);
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67 } else {
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68 inspector.modified(fname);
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69 }
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70 }
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71 return true;
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72 }
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73
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74 public boolean end(int revision) {
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75 for (String fname : collect.idsMap.keySet()) {
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76 inspector.removed(fname);
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77 }
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78 if (collect.idsMap.size() != collect.flagsMap.size()) {
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79 throw new IllegalStateException();
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80 }
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81 return false;
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82 }
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83 };
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84 getManifest().walk(rev2, rev2, compare);
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85 }
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86
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87 public void statusLocal(int baseRevision, StatusInspector inspector) {
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88 LinkedList<File> folders = new LinkedList<File>();
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89 final File rootDir = repoDir.getParentFile();
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90 folders.add(rootDir);
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91 final HgDirstate dirstate = loadDirstate();
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92 final HgIgnore hgignore = loadIgnore();
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93 TreeSet<String> knownEntries = dirstate.all();
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94 final boolean isTipBase = baseRevision == TIP || baseRevision == getManifest().revisionCount();
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95 final ManifestRevisionCollector collect = isTipBase ? null : new ManifestRevisionCollector();
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96 if (!isTipBase) {
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97 getManifest().walk(baseRevision, baseRevision, collect);
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98 }
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99 do {
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100 File d = folders.removeFirst();
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101 for (File f : d.listFiles()) {
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102 if (f.isDirectory()) {
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103 if (!".hg".equals(f.getName())) {
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104 folders.addLast(f);
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105 }
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106 } else {
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107 // FIXME path relative to rootDir
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108 String fname = normalize(f.getPath().substring(rootDir.getPath().length() + 1));
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109 if (hgignore.isIgnored(fname)) {
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110 inspector.ignored(fname);
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111 } else {
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112 if (knownEntries.remove(fname)) {
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113 // modified, added, removed, clean
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114 HgDirstate.Record r;
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115 if ((r = dirstate.checkNormal(fname)) != null) {
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116 // either clean or modified
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117 if (f.lastModified() / 1000 == r.time && r.size == f.length()) {
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118 inspector.clean(fname);
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119 } else {
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120 // FIXME check actual content to avoid false modified files
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121 inspector.modified(fname);
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122 }
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123 } else if ((r = dirstate.checkAdded(fname)) != null) {
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124 if (r.name2 == null) {
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125 inspector.added(fname);
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126 } else {
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127 inspector.copied(fname, r.name2);
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128 }
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129 } else if ((r = dirstate.checkRemoved(fname)) != null) {
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130 inspector.removed(fname);
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131 } else if ((r = dirstate.checkMerged(fname)) != null) {
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132 inspector.modified(fname);
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133 }
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134 } else {
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135 inspector.unknown(fname);
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136 }
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137 }
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138 }
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139 }
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140 } while (!folders.isEmpty());
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141 for (String m : knownEntries) {
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142 inspector.missing(m);
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143 }
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144 }
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145
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146 // 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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147 public final HgDirstate loadDirstate() {
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148 // XXX may cache in SoftReference if creation is expensive
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149 return new HgDirstate(this, new File(repoDir, "dirstate"));
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150 }
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151
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152 // package-local, see comment for loadDirstate
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153 public final HgIgnore loadIgnore() {
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154 return new HgIgnore(this);
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155 }
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156
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157 /*package-local*/ DataAccessProvider getDataAccess() {
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158 return dataAccess;
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159 }
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160
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161 /*package-local*/ File getRepositoryRoot() {
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162 return repoDir;
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163 }
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164
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165 private final HashMap<String, SoftReference<RevlogStream>> streamsCache = new HashMap<String, SoftReference<RevlogStream>>();
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166
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167 /**
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168 * path - repository storage path (i.e. one usually with .i or .d)
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169 */
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170 @Override
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171 protected RevlogStream resolve(String path) {
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172 final SoftReference<RevlogStream> ref = streamsCache.get(path);
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173 RevlogStream cached = ref == null ? null : ref.get();
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174 if (cached != null) {
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175 return cached;
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176 }
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177 File f = new File(repoDir, path);
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178 if (f.exists()) {
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179 RevlogStream s = new RevlogStream(dataAccess, f);
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180 streamsCache.put(path, new SoftReference<RevlogStream>(s));
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181 return s;
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182 }
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183 return null;
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184 }
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185
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186 @Override
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187 public HgDataFile getFileNode(String path) {
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188 String nPath = normalize(path);
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189 String storagePath = toStoragePath(nPath, true);
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190 RevlogStream content = resolve(storagePath);
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191 // XXX no content when no file? or HgDataFile.exists() to detect that? How about files that were removed in previous releases?
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192 return new HgDataFile(this, nPath, content);
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193 }
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194
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195 private boolean revlogv1;
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196 private boolean store;
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197 private boolean fncache;
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198 private boolean dotencode;
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199
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200
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201 private void parseRequires() {
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202 File requiresFile = new File(repoDir, "requires");
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203 if (!requiresFile.exists()) {
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204 return;
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205 }
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206 try {
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207 BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(requiresFile)));
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208 String line;
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209 while ((line = br.readLine()) != null) {
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210 revlogv1 |= "revlogv1".equals(line);
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211 store |= "store".equals(line);
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212 fncache |= "fncache".equals(line);
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213 dotencode |= "dotencode".equals(line);
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214 }
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215 } catch (IOException ex) {
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216 ex.printStackTrace(); // FIXME log
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217 }
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218 }
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219
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220 // FIXME document what path argument is, whether it includes .i or .d, and whether it's 'normalized' (slashes) or not.
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221 // since .hg/store keeps both .i files and files without extension (e.g. fncache), guees, for data == false
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222 // we shall assume path has extension
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223 // FIXME much more to be done, see store.py:_hybridencode
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224 // @see http://mercurial.selenic.com/wiki/CaseFoldingPlan
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225 @Override
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226 protected String toStoragePath(String path, boolean data) {
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227 path = normalize(path);
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228 final String STR_STORE = "store/";
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229 final String STR_DATA = "data/";
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230 final String STR_DH = "dh/";
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231 if (!data) {
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232 return this.store ? STR_STORE + path : path;
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233 }
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234 path = path.replace(".hg/", ".hg.hg/").replace(".i/", ".i.hg/").replace(".d/", ".d.hg/");
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235 StringBuilder sb = new StringBuilder(path.length() << 1);
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236 if (store || fncache) {
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237 // encodefilename
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238 final String reservedChars = "\\:*?\"<>|";
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239 // in fact, \\ is unlikely to match, ever - we've replaced all of them already, above. Just regards to store.py
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240 int x;
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241 char[] hexByte = new char[2];
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242 for (int i = 0; i < path.length(); i++) {
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243 final char ch = path.charAt(i);
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244 if (ch >= 'a' && ch <= 'z') {
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245 sb.append(ch); // POIRAE
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246 } else if (ch >= 'A' && ch <= 'Z') {
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247 sb.append('_');
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248 sb.append(Character.toLowerCase(ch)); // Perhaps, (char) (((int) ch) + 32)? Even better, |= 0x20?
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249 } else if ( (x = reservedChars.indexOf(ch)) != -1) {
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250 sb.append('~');
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251 sb.append(toHexByte(reservedChars.charAt(x), hexByte));
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252 } else if ((ch >= '~' /*126*/ && ch <= 255) || ch < ' ' /*32*/) {
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253 sb.append('~');
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254 sb.append(toHexByte(ch, hexByte));
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255 } else if (ch == '_') {
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256 // note, encoding from store.py:_buildencodefun and :_build_lower_encodefun
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257 // differ in the way they process '_' (latter doesn't escape it)
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258 sb.append('_');
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259 sb.append('_');
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260 } else {
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261 sb.append(ch);
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262 }
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263 }
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264 // auxencode
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265 if (fncache) {
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266 x = 0; // last segment start
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267 final TreeSet<String> windowsReservedFilenames = new TreeSet<String>();
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268 windowsReservedFilenames.addAll(Arrays.asList("con prn aux nul com1 com2 com3 com4 com5 com6 com7 com8 com9 lpt1 lpt2 lpt3 lpt4 lpt5 lpt6 lpt7 lpt8 lpt9".split(" ")));
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269 do {
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270 int i = sb.indexOf("/", x);
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271 if (i == -1) {
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272 i = sb.length();
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273 }
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274 // windows reserved filenames are at least of length 3
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275 if (i - x >= 3) {
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276 boolean found = false;
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277 if (i-x == 3) {
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278 found = windowsReservedFilenames.contains(sb.subSequence(x, i));
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279 } else if (sb.charAt(x+3) == '.') { // implicit i-x > 3
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280 found = windowsReservedFilenames.contains(sb.subSequence(x, x+3));
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281 } else if (i-x > 4 && sb.charAt(x+4) == '.') {
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282 found = windowsReservedFilenames.contains(sb.subSequence(x, x+4));
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283 }
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284 if (found) {
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285 sb.setCharAt(x, '~');
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286 sb.insert(x+1, toHexByte(sb.charAt(x+2), hexByte));
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287 i += 2;
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288 }
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289 }
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290 if (dotencode && (sb.charAt(x) == '.' || sb.charAt(x) == ' ')) {
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291 sb.insert(x+1, toHexByte(sb.charAt(x), hexByte));
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292 sb.setCharAt(x, '~'); // setChar *after* charAt/insert to get ~2e, not ~7e for '.'
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293 i += 2;
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294 }
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295 x = i+1;
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296 } while (x < sb.length());
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297 }
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298 }
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299 final int MAX_PATH_LEN_IN_HGSTORE = 120;
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300 if (fncache && (sb.length() + STR_DATA.length() > MAX_PATH_LEN_IN_HGSTORE)) {
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301 throw HgRepository.notImplemented(); // FIXME digest and fncache use
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302 }
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303 if (this.store) {
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304 sb.insert(0, STR_STORE + STR_DATA);
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305 }
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306 sb.append(".i");
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307 return sb.toString();
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308 }
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309
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310 private static char[] toHexByte(int ch, char[] buf) {
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311 assert buf.length > 1;
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312 final String hexDigits = "0123456789abcdef";
9
d6d2a630f4a6 Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
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313 buf[0] = hexDigits.charAt((ch & 0x00F0) >>> 4);
8
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314 buf[1] = hexDigits.charAt(ch & 0x0F);
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315 return buf;
3
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
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316 }
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317
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318 // TODO handle . and .. (although unlikely to face them from GUI client)
3
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319 private static String normalize(String path) {
8
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320 path = path.replace('\\', '/').replace("//", "/");
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321 if (path.startsWith("/")) {
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322 path = path.substring(1);
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323 }
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324 return path;
3
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325 }
21
e929cecae4e1 Refactor to move revlog content to base class
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diff changeset
326
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327 private final class ManifestRevisionCollector implements HgManifest.Inspector {
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328 final HashMap<String, Nodeid> idsMap = new HashMap<String, Nodeid>();
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329 final HashMap<String, String> flagsMap = new HashMap<String, String>();
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diff changeset
330
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331 public boolean next(Nodeid nid, String fname, String flags) {
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332 idsMap.put(fname, nid);
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333 flagsMap.put(fname, flags);
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334 return true;
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335 }
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336
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337 public boolean end(int revision) {
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338 return false;
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339 }
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340
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341 public boolean begin(int revision, Nodeid nid) {
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342 return true;
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343 }
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344 }
1
a3576694a4d1 Repository detection from local/specified directory
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parents:
diff changeset
345 }