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annotate src/org/tmatesoft/hg/repo/HgInternals.java @ 440:299870249a28

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Issue 30: bogus IOException for mmap file on linux
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 19 Apr 2012 19:18:25 +0200
parents 12f668401613
children 6865eb742883
rev   line source
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1 /*
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2 * Copyright (c) 2011-2012 TMate Software Ltd
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3 *
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4 * This program is free software; you can redistribute it and/or modify
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5 * it under the terms of the GNU General Public License as published by
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6 * the Free Software Foundation; version 2 of the License.
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7 *
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8 * This program is distributed in the hope that it will be useful,
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9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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11 * GNU General Public License for more details.
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12 *
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13 * For information on how to redistribute this software under
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14 * the terms of a license other than GNU General Public License
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15 * contact TMate Software at support@hg4j.com
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16 */
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17 package org.tmatesoft.hg.repo;
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18
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19 import static org.tmatesoft.hg.repo.HgRepository.*;
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20
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21 import java.io.BufferedReader;
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22 import java.io.File;
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23 import java.io.IOException;
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24 import java.io.Reader;
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25 import java.net.InetAddress;
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26 import java.net.UnknownHostException;
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27
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28 import org.tmatesoft.hg.core.SessionContext;
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29 import org.tmatesoft.hg.internal.Experimental;
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30 import org.tmatesoft.hg.internal.Internals;
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31 import org.tmatesoft.hg.internal.RelativePathRewrite;
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32 import org.tmatesoft.hg.internal.WinToNixPathRewrite;
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33 import org.tmatesoft.hg.util.FileIterator;
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34 import org.tmatesoft.hg.util.FileWalker;
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35 import org.tmatesoft.hg.util.Path;
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36 import org.tmatesoft.hg.util.PathRewrite;
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37
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39 /**
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40 * DO NOT USE THIS CLASS, INTENDED FOR TESTING PURPOSES.
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41 *
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42 * This class gives access to repository internals, and holds methods that I'm not confident have to be widely accessible
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43 * Debug helper, to access otherwise restricted (package-local) methods
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44 *
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45 * @author Artem Tikhomirov
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46 * @author TMate Software Ltd.
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47 */
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48 @Experimental(reason="Perhaps, shall split methods with debug purpose from methods that are experimental API")
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49 public class HgInternals {
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51 private final HgRepository repo;
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53 public HgInternals(HgRepository hgRepo) {
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54 repo = hgRepo;
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55 }
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57 public HgDirstate getDirstate() throws HgInvalidControlFileException {
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58 return repo.loadDirstate(new Path.SimpleSource());
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59 }
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61 // tests
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62 public HgDirstate createDirstate(boolean caseSensitiveFileSystem) throws HgInvalidControlFileException {
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63 PathRewrite canonicalPath = null;
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64 if (!caseSensitiveFileSystem) {
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65 canonicalPath = new PathRewrite() {
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66
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67 public CharSequence rewrite(CharSequence path) {
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68 return path.toString().toLowerCase();
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69 }
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70 };
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71 }
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72 HgDirstate ds = new HgDirstate(repo, new File(repo.getRepositoryRoot(), "dirstate"), new Path.SimpleSource(), canonicalPath);
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73 ds.read(repo.getImplHelper().buildFileNameEncodingHelper());
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74 return ds;
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75 }
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77 public Path[] checkKnown(HgDirstate dirstate, Path[] toCheck) {
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78 Path[] rv = new Path[toCheck.length];
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79 for (int i = 0; i < toCheck.length; i++) {
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80 rv[i] = dirstate.known(toCheck[i]);
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81 }
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82 return rv;
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83 }
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85 public static File getRepositoryDir(HgRepository hgRepo) {
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86 return hgRepo.getRepositoryRoot();
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87 }
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89 /**
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90 * @param source where to read definitions from
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91 * @param globPathRewrite <code>null</code> to use default, or pass an instance to override defaults
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92 * @return
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93 * @throws IOException
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94 */
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95 public static HgIgnore newHgIgnore(Reader source, PathRewrite globPathRewrite) throws IOException {
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96 if (globPathRewrite == null) {
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97 // shall match that of HgRepository#getIgnore() (Internals#buildNormalizePathRewrite())
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98 if (Internals.runningOnWindows()) {
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99 globPathRewrite = new WinToNixPathRewrite();
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100 } else {
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101 globPathRewrite = new PathRewrite.Empty();
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102 }
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103 }
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104 HgIgnore hgIgnore = new HgIgnore(globPathRewrite);
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105 BufferedReader br = source instanceof BufferedReader ? (BufferedReader) source : new BufferedReader(source);
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106 hgIgnore.read(br);
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107 br.close();
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108 return hgIgnore;
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109 }
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111 // in fact, need a setter for this anyway, shall move to internal.Internals perhaps?
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112 public String getNextCommitUsername() {
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113 String hgUser = System.getenv("HGUSER");
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114 if (hgUser != null && hgUser.trim().length() > 0) {
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115 return hgUser.trim();
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116 }
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117 String configValue = repo.getConfiguration().getStringValue("ui", "username", null);
128
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118 if (configValue != null) {
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119 return configValue;
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120 }
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121 String email = System.getenv("EMAIL");
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122 if (email != null && email.trim().length() > 0) {
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123 return email;
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124 }
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125 String username = System.getProperty("user.name");
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126 try {
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127 String hostname = InetAddress.getLocalHost().getHostName();
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128 return username + '@' + hostname;
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129 } catch (UnknownHostException ex) {
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130 return username;
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131 }
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132 }
229
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133
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134 @Experimental(reason="Don't want to expose io.File from HgRepository; need to create FileIterator for working dir. Need a place to keep that code")
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135 /*package-local*/ FileIterator createWorkingDirWalker(Path.Matcher workindDirScope) {
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136 File repoRoot = repo.getWorkingDir();
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137 Path.Source pathSrc = new Path.SimpleSource(new PathRewrite.Composite(new RelativePathRewrite(repoRoot), repo.getToRepoPathHelper()));
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138 // Impl note: simple source is enough as files in the working dir are all unique
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139 // even if they might get reused (i.e. after FileIterator#reset() and walking once again),
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140 // path caching is better to be done in the code which knows that path are being reused
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141 return new FileWalker(repo.getContext(), repoRoot, pathSrc, workindDirScope);
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142 }
295
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143
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144 // expose otherwise package-local information primarily to use in our own o.t.hg.core package
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145 public static SessionContext getContext(HgRepository repo) {
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146 return repo.getContext();
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147 }
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148
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149
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150 // Convenient check of revision index for validity (not all negative values are wrong as long as we use negative constants)
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151 public static boolean wrongRevisionIndex(int rev) {
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152 // TODO Another method to check,throw and expand TIP at once (check[Revision|Revlog]Index()
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153 return rev < 0 && rev != TIP && rev != WORKING_COPY && rev != BAD_REVISION && rev != NO_REVISION;
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154 }
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155
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156 // throws HgInvalidRevisionException or IllegalArgumentException if [start..end] range is not a subrange of [0..lastRevision]
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157 public static void checkRevlogRange(int start, int end, int lastRevision) throws HgInvalidRevisionException {
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158 if (start < 0 || start > lastRevision) {
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159 final String m = String.format("Bad left range boundary %d in [0..%d]", start, lastRevision);
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160 throw new HgInvalidRevisionException(m, null, start).setRevisionIndex(start, 0, lastRevision);
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161 }
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162 if (end < 0 || end > lastRevision) {
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163 final String m = String.format("Bad right range boundary %d in [0..%d]", end, lastRevision);
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164 throw new HgInvalidRevisionException(m, null, end).setRevisionIndex(end, 0, lastRevision);
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165 }
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166 if (end < start) {
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167 throw new IllegalArgumentException(String.format("Bad range [%d..%d]", start, end));
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168 }
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169 }
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170 }