Mercurial > jhg

annotate src/org/tmatesoft/hg/repo/HgInternals.java @ 338:3cfa4d908fc9

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Add options to control DataAccessProvider, allow to turn off use of file memory mapping in particular to solve potential sharing violation (os file handle gets released on MappedByteByffer being GC'd, not on FileChannel.close())
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Tue, 15 Nov 2011 04:47:03 +0100
parents a37ce7145c3f
children 863356c2847e
rev   line source
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1 /*
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2 * Copyright (c) 2011 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.RelativePathRewrite;
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31 import org.tmatesoft.hg.util.FileIterator;
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32 import org.tmatesoft.hg.util.FileWalker;
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33 import org.tmatesoft.hg.util.Path;
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34 import org.tmatesoft.hg.util.PathPool;
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35 import org.tmatesoft.hg.util.PathRewrite;
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36
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38 /**
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39 * DO NOT USE THIS CLASS, INTENDED FOR TESTING PURPOSES.
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40 *
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41 * This class gives access to repository internals, and holds methods that I'm not confident have to be widely accessible
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42 * Debug helper, to access otherwise restricted (package-local) methods
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43 *
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44 * @author Artem Tikhomirov
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45 * @author TMate Software Ltd.
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46 */
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47 @Experimental(reason="Perhaps, shall split methods with debug purpose from methods that are experimental API")
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48 public class HgInternals {
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50 private final HgRepository repo;
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52 public HgInternals(HgRepository hgRepo) {
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53 repo = hgRepo;
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54 }
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56 public void dumpDirstate() {
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57 getDirstate().dump();
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58 }
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60 public HgDirstate getDirstate() {
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61 return repo.loadDirstate(new PathPool(new PathRewrite.Empty()));
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62 }
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64 // tests
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65 public HgDirstate createDirstate(boolean caseSensitiveFileSystem) {
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66 PathRewrite canonicalPath = null;
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67 if (!caseSensitiveFileSystem) {
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68 canonicalPath = new PathRewrite() {
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69
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70 public CharSequence rewrite(CharSequence path) {
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71 return path.toString().toLowerCase();
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72 }
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73 };
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74 }
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75 return new HgDirstate(repo, new File(repo.getRepositoryRoot(), "dirstate"), new PathPool(new PathRewrite.Empty()), canonicalPath);
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76 }
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78 public Path[] checkKnown(HgDirstate dirstate, Path[] toCheck) {
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79 Path[] rv = new Path[toCheck.length];
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80 for (int i = 0; i < toCheck.length; i++) {
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81 rv[i] = dirstate.known(toCheck[i]);
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82 }
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83 return rv;
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84 }
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86 public boolean[] checkIgnored(String... toCheck) {
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87 HgIgnore ignore = repo.getIgnore();
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88 boolean[] rv = new boolean[toCheck.length];
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89 for (int i = 0; i < toCheck.length; i++) {
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90 rv[i] = ignore.isIgnored(Path.create(toCheck[i]));
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91 }
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92 return rv;
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93 }
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94
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95 public File getRepositoryDir() {
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96 return repo.getRepositoryRoot();
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97 }
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99 public static HgIgnore newHgIgnore(Reader source) throws IOException {
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100 HgIgnore hgIgnore = new HgIgnore();
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101 BufferedReader br = source instanceof BufferedReader ? (BufferedReader) source : new BufferedReader(source);
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102 hgIgnore.read(br);
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103 br.close();
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104 return hgIgnore;
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105 }
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107 // in fact, need a setter for this anyway, shall move to internal.Internals perhaps?
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108 public String getNextCommitUsername() {
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109 String hgUser = System.getenv("HGUSER");
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110 if (hgUser != null && hgUser.trim().length() > 0) {
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111 return hgUser.trim();
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112 }
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113 String configValue = repo.getConfiguration().getStringValue("ui", "username", null);
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114 if (configValue != null) {
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115 return configValue;
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116 }
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117 String email = System.getenv("EMAIL");
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118 if (email != null && email.trim().length() > 0) {
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119 return email;
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120 }
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121 String username = System.getProperty("user.name");
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122 try {
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123 String hostname = InetAddress.getLocalHost().getHostName();
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124 return username + '@' + hostname;
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125 } catch (UnknownHostException ex) {
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126 return username;
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127 }
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128 }
229
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129
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130 @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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131 /*package-local*/ FileIterator createWorkingDirWalker(Path.Matcher workindDirScope) {
237
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132 File repoRoot = repo.getWorkingDir();
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133 Path.Source pathSrc = new Path.SimpleSource(new PathRewrite.Composite(new RelativePathRewrite(repoRoot), repo.getToRepoPathHelper()));
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134 // Impl note: simple source is enough as files in the working dir are all unique
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135 // even if they might get reused (i.e. after FileIterator#reset() and walking once again),
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136 // path caching is better to be done in the code which knows that path are being reused
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137 return new FileWalker(repoRoot, pathSrc, workindDirScope);
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138 }
295
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139
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140 // expose othewise package-local information primarily to use in our own o.t.hg.core package
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141 public static SessionContext getContext(HgRepository repo) {
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142 return repo.getContext();
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143 }
229
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144
148
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145
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146 // Convenient check of local revision number for validity (not all negative values are wrong as long as we use negative constants)
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147 public static boolean wrongLocalRevision(int rev) {
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148 return rev < 0 && rev != TIP && rev != WORKING_COPY && rev != BAD_REVISION;
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149 }
300
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150
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151 // throws IllegalArgumentException if [start..end] range is not a subrange of [0..lastRevision]
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152 public static void checkRevlogRange(int start, int end, int lastRevision) {
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153 if (start < 0 || start > lastRevision) {
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154 throw new IllegalArgumentException(String.format("Bad left range boundary %d in [0..%d]", start, lastRevision));
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155 }
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156 if (end < 0 || end > lastRevision) {
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157 throw new IllegalArgumentException(String.format("Bad right range boundary %d in [0..%d]", end, lastRevision));
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158 }
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159 if (end < start) {
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160 throw new IllegalArgumentException(String.format("Bad range [%d..%d]", start, end));
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161 }
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162 }
59
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163 }