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annotate src/com/tmate/hgkit/ll/LocalHgRepo.java @ 18:02ee376bee79

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status operation against current working directory
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Mon, 03 Jan 2011 20:42:52 +0100
parents 865bf07f381f
children 11cfabe692b3
rev   line source
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1 /*
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2 * Copyright (c) 2010 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, StatusInspector inspector) {
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50 throw HgRepository.notImplemented();
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51 }
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52
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53 public void statusLocal(int rev1, StatusInspector inspector) {
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54 LinkedList<File> folders = new LinkedList<File>();
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55 final File rootDir = repoDir.getParentFile();
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56 folders.add(rootDir);
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57 final HgDirstate dirstate = loadDirstate();
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58 final HgIgnore hgignore = loadIgnore();
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59 TreeSet<String> knownEntries = dirstate.all();
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60 do {
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61 File d = folders.removeFirst();
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62 for (File f : d.listFiles()) {
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63 if (f.isDirectory()) {
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64 if (!".hg".equals(f.getName())) {
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65 folders.addLast(f);
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66 }
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67 } else {
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68 // FIXME path relative to rootDir
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69 String fname = normalize(f.getPath().substring(rootDir.getPath().length() + 1));
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70 if (hgignore.isIgnored(fname)) {
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71 inspector.ignored(fname);
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72 } else {
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73 if (knownEntries.remove(fname)) {
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74 // modified, added, removed, clean
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75 HgDirstate.Record r;
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76 if ((r = dirstate.checkNormal(fname)) != null) {
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77 // either clean or modified
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78 if (f.lastModified() / 1000 == r.time && r.size == f.length()) {
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79 inspector.clean(fname);
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80 } else {
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81 // FIXME check actual content to avoid false modified files
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82 inspector.modified(fname);
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83 }
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84 } else if ((r = dirstate.checkAdded(fname)) != null) {
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85 if (r.name2 == null) {
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86 inspector.added(fname);
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87 } else {
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88 inspector.copied(fname, r.name2);
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89 }
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90 } else if ((r = dirstate.checkRemoved(fname)) != null) {
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91 inspector.removed(fname);
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92 } else if ((r = dirstate.checkMerged(fname)) != null) {
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93 inspector.modified(fname);
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94 }
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95 } else {
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96 inspector.unknown(fname);
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97 }
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98 }
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99 }
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100 }
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101 } while (!folders.isEmpty());
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102 for (String m : knownEntries) {
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103 inspector.missing(m);
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104 }
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105 }
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106
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107 // 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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108 public final HgDirstate loadDirstate() {
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109 // XXX may cache in SoftReference if creation is expensive
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110 return new HgDirstate(this, new File(repoDir, "dirstate"));
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111 }
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112
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113 // package-local, see comment for loadDirstate
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114 public final HgIgnore loadIgnore() {
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115 return new HgIgnore(this);
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116 }
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117
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118 /*package-local*/ DataAccessProvider getDataAccess() {
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119 return dataAccess;
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120 }
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121
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122 /*package-local*/ File getRepositoryRoot() {
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123 return repoDir;
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124 }
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125
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126 private final HashMap<String, SoftReference<RevlogStream>> streamsCache = new HashMap<String, SoftReference<RevlogStream>>();
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127
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128 /**
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129 * path - repository storage path (i.e. one usually with .i or .d)
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130 */
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131 @Override
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132 protected RevlogStream resolve(String path) {
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133 final SoftReference<RevlogStream> ref = streamsCache.get(path);
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134 RevlogStream cached = ref == null ? null : ref.get();
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135 if (cached != null) {
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136 return cached;
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137 }
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138 File f = new File(repoDir, path);
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139 if (f.exists()) {
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140 RevlogStream s = new RevlogStream(dataAccess, f);
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141 streamsCache.put(path, new SoftReference<RevlogStream>(s));
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142 return s;
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143 }
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144 return null;
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145 }
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146
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147 @Override
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148 public HgDataFile getFileNode(String path) {
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149 String nPath = normalize(path);
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150 String storagePath = toStoragePath(nPath, true);
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151 RevlogStream content = resolve(storagePath);
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152 // 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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153 return new HgDataFile(this, nPath, content);
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154 }
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155
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156 private boolean revlogv1;
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157 private boolean store;
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158 private boolean fncache;
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159 private boolean dotencode;
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160
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161
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162 private void parseRequires() {
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163 File requiresFile = new File(repoDir, "requires");
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164 if (!requiresFile.exists()) {
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165 return;
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166 }
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167 try {
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168 BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(requiresFile)));
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169 String line;
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170 while ((line = br.readLine()) != null) {
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171 revlogv1 |= "revlogv1".equals(line);
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172 store |= "store".equals(line);
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173 fncache |= "fncache".equals(line);
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174 dotencode |= "dotencode".equals(line);
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175 }
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176 } catch (IOException ex) {
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177 ex.printStackTrace(); // FIXME log
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178 }
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179 }
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180
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181 // FIXME document what path argument is, whether it includes .i or .d, and whether it's 'normalized' (slashes) or not.
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182 // since .hg/store keeps both .i files and files without extension (e.g. fncache), guees, for data == false
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183 // we shall assume path has extension
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184 // FIXME much more to be done, see store.py:_hybridencode
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185 // @see http://mercurial.selenic.com/wiki/CaseFoldingPlan
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186 @Override
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187 protected String toStoragePath(String path, boolean data) {
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188 path = normalize(path);
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189 final String STR_STORE = "store/";
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190 final String STR_DATA = "data/";
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191 final String STR_DH = "dh/";
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192 if (!data) {
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193 return this.store ? STR_STORE + path : path;
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194 }
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195 path = path.replace(".hg/", ".hg.hg/").replace(".i/", ".i.hg/").replace(".d/", ".d.hg/");
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196 StringBuilder sb = new StringBuilder(path.length() << 1);
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197 if (store || fncache) {
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198 // encodefilename
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199 final String reservedChars = "\\:*?\"<>|";
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200 // in fact, \\ is unlikely to match, ever - we've replaced all of them already, above. Just regards to store.py
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201 int x;
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202 char[] hexByte = new char[2];
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203 for (int i = 0; i < path.length(); i++) {
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204 final char ch = path.charAt(i);
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205 if (ch >= 'a' && ch <= 'z') {
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206 sb.append(ch); // POIRAE
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207 } else if (ch >= 'A' && ch <= 'Z') {
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208 sb.append('_');
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209 sb.append(Character.toLowerCase(ch)); // Perhaps, (char) (((int) ch) + 32)? Even better, |= 0x20?
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210 } else if ( (x = reservedChars.indexOf(ch)) != -1) {
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211 sb.append('~');
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212 sb.append(toHexByte(reservedChars.charAt(x), hexByte));
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213 } else if ((ch >= '~' /*126*/ && ch <= 255) || ch < ' ' /*32*/) {
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214 sb.append('~');
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215 sb.append(toHexByte(ch, hexByte));
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216 } else if (ch == '_') {
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217 // note, encoding from store.py:_buildencodefun and :_build_lower_encodefun
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218 // differ in the way they process '_' (latter doesn't escape it)
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219 sb.append('_');
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220 sb.append('_');
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221 } else {
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222 sb.append(ch);
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223 }
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224 }
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225 // auxencode
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226 if (fncache) {
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227 x = 0; // last segment start
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228 final TreeSet<String> windowsReservedFilenames = new TreeSet<String>();
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229 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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230 do {
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231 int i = sb.indexOf("/", x);
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232 if (i == -1) {
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233 i = sb.length();
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234 }
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235 // windows reserved filenames are at least of length 3
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236 if (i - x >= 3) {
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237 boolean found = false;
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238 if (i-x == 3) {
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239 found = windowsReservedFilenames.contains(sb.subSequence(x, i));
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240 } else if (sb.charAt(x+3) == '.') { // implicit i-x > 3
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241 found = windowsReservedFilenames.contains(sb.subSequence(x, x+3));
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242 } else if (i-x > 4 && sb.charAt(x+4) == '.') {
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243 found = windowsReservedFilenames.contains(sb.subSequence(x, x+4));
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244 }
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245 if (found) {
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246 sb.setCharAt(x, '~');
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247 sb.insert(x+1, toHexByte(sb.charAt(x+2), hexByte));
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248 i += 2;
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249 }
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250 }
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251 if (dotencode && (sb.charAt(x) == '.' || sb.charAt(x) == ' ')) {
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252 sb.insert(x+1, toHexByte(sb.charAt(x), hexByte));
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253 sb.setCharAt(x, '~'); // setChar *after* charAt/insert to get ~2e, not ~7e for '.'
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254 i += 2;
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255 }
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256 x = i+1;
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257 } while (x < sb.length());
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258 }
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259 }
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260 final int MAX_PATH_LEN_IN_HGSTORE = 120;
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261 if (fncache && (sb.length() + STR_DATA.length() > MAX_PATH_LEN_IN_HGSTORE)) {
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262 throw HgRepository.notImplemented(); // FIXME digest and fncache use
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263 }
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264 if (this.store) {
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265 sb.insert(0, STR_STORE + STR_DATA);
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266 }
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267 sb.append(".i");
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268 return sb.toString();
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269 }
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270
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271 private static char[] toHexByte(int ch, char[] buf) {
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272 assert buf.length > 1;
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273 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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parents: 8
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274 buf[0] = hexDigits.charAt((ch & 0x00F0) >>> 4);
8
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275 buf[1] = hexDigits.charAt(ch & 0x0F);
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276 return buf;
3
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
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277 }
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278
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279 // TODO handle . and .. (although unlikely to face them from GUI client)
3
24bb4f365164 Rudimentary log functionality with basic infrastructure is in place
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280 private static String normalize(String path) {
8
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281 path = path.replace('\\', '/').replace("//", "/");
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282 if (path.startsWith("/")) {
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283 path = path.substring(1);
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284 }
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285 return path;
3
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286 }
1
a3576694a4d1 Repository detection from local/specified directory
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287 }