Mercurial > jhg

annotate src/org/tmatesoft/hg/repo/HgInternals.java @ 356:91d75e1bac9f

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Consistent approach to deal with adaptable objects. Give adaptable precedence over instanceof to allow conditional response when classes do implement desired interface
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Tue, 06 Dec 2011 14:25:52 +0100
parents a0864b2892cd
children 2fadf8695f8a
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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19 import static org.tmatesoft.hg.repo.HgRepository.*;
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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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28 import org.tmatesoft.hg.core.HgInvalidControlFileException;
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29 import org.tmatesoft.hg.core.HgInvalidRevisionException;
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30 import org.tmatesoft.hg.core.SessionContext;
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31 import org.tmatesoft.hg.internal.Experimental;
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32 import org.tmatesoft.hg.internal.RelativePathRewrite;
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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.PathPool;
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37 import org.tmatesoft.hg.util.PathRewrite;
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40 /**
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41 * DO NOT USE THIS CLASS, INTENDED FOR TESTING PURPOSES.
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42 *
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43 * This class gives access to repository internals, and holds methods that I'm not confident have to be widely accessible
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44 * Debug helper, to access otherwise restricted (package-local) methods
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45 *
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46 * @author Artem Tikhomirov
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47 * @author TMate Software Ltd.
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48 */
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49 @Experimental(reason="Perhaps, shall split methods with debug purpose from methods that are experimental API")
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50 public class HgInternals {
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52 private final HgRepository repo;
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54 public HgInternals(HgRepository hgRepo) {
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55 repo = hgRepo;
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56 }
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58 public HgDirstate getDirstate() throws HgInvalidControlFileException {
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59 return repo.loadDirstate(new PathPool(new PathRewrite.Empty()));
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60 }
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61
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62 // tests
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63 public HgDirstate createDirstate(boolean caseSensitiveFileSystem) throws HgInvalidControlFileException {
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64 PathRewrite canonicalPath = null;
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65 if (!caseSensitiveFileSystem) {
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66 canonicalPath = new PathRewrite() {
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67
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68 public CharSequence rewrite(CharSequence path) {
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69 return path.toString().toLowerCase();
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70 }
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71 };
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72 }
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73 HgDirstate ds = new HgDirstate(repo, new File(repo.getRepositoryRoot(), "dirstate"), new PathPool(new PathRewrite.Empty()), canonicalPath);
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74 ds.read();
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75 return ds;
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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 File getRepositoryDir() {
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87 return repo.getRepositoryRoot();
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88 }
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90 public static HgIgnore newHgIgnore(Reader source) throws IOException {
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91 HgIgnore hgIgnore = new HgIgnore();
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92 BufferedReader br = source instanceof BufferedReader ? (BufferedReader) source : new BufferedReader(source);
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93 hgIgnore.read(br);
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94 br.close();
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95 return hgIgnore;
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96 }
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98 // in fact, need a setter for this anyway, shall move to internal.Internals perhaps?
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99 public String getNextCommitUsername() {
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100 String hgUser = System.getenv("HGUSER");
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101 if (hgUser != null && hgUser.trim().length() > 0) {
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102 return hgUser.trim();
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103 }
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104 String configValue = repo.getConfiguration().getStringValue("ui", "username", null);
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105 if (configValue != null) {
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106 return configValue;
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107 }
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108 String email = System.getenv("EMAIL");
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109 if (email != null && email.trim().length() > 0) {
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110 return email;
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111 }
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112 String username = System.getProperty("user.name");
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113 try {
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114 String hostname = InetAddress.getLocalHost().getHostName();
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115 return username + '@' + hostname;
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116 } catch (UnknownHostException ex) {
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117 return username;
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118 }
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119 }
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120
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121 @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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122 /*package-local*/ FileIterator createWorkingDirWalker(Path.Matcher workindDirScope) {
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123 File repoRoot = repo.getWorkingDir();
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124 Path.Source pathSrc = new Path.SimpleSource(new PathRewrite.Composite(new RelativePathRewrite(repoRoot), repo.getToRepoPathHelper()));
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125 // Impl note: simple source is enough as files in the working dir are all unique
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126 // even if they might get reused (i.e. after FileIterator#reset() and walking once again),
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127 // path caching is better to be done in the code which knows that path are being reused
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128 return new FileWalker(repoRoot, pathSrc, workindDirScope);
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129 }
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130
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131 // expose othewise package-local information primarily to use in our own o.t.hg.core package
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132 public static SessionContext getContext(HgRepository repo) {
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133 return repo.getContext();
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134 }
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135
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136
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137 // 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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138 public static boolean wrongLocalRevision(int rev) {
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139 return rev < 0 && rev != TIP && rev != WORKING_COPY && rev != BAD_REVISION;
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140 }
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141
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142 // throws HgInvalidRevisionException or IllegalArgumentException if [start..end] range is not a subrange of [0..lastRevision]
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143 public static void checkRevlogRange(int start, int end, int lastRevision) throws HgInvalidRevisionException {
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144 if (start < 0 || start > lastRevision) {
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145 final String m = String.format("Bad left range boundary %d in [0..%d]", start, lastRevision);
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146 throw new HgInvalidRevisionException(m, null, start).setRevisionIndex(start, 0, lastRevision);
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147 }
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148 if (end < 0 || end > lastRevision) {
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149 final String m = String.format("Bad right range boundary %d in [0..%d]", end, lastRevision);
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150 throw new HgInvalidRevisionException(m, null, end).setRevisionIndex(end, 0, lastRevision);
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151 }
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152 if (end < start) {
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153 throw new IllegalArgumentException(String.format("Bad range [%d..%d]", start, end));
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154 }
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155 }
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156 }