Mercurial > jhg

annotate src/org/tmatesoft/hg/internal/Internals.java @ 383:994b5813a925

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author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Mon, 13 Feb 2012 12:47:24 +0100
parents 82336b7c54f4
children b015f3918120
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.internal;
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19 import static org.tmatesoft.hg.internal.RequiresFile.*;
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21 import java.io.File;
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22 import java.io.FileOutputStream;
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23 import java.io.IOException;
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24 import java.util.ArrayList;
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25 import java.util.Arrays;
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26 import java.util.Collections;
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27 import java.util.LinkedHashSet;
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28 import java.util.List;
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29 import java.util.StringTokenizer;
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31 import org.tmatesoft.hg.core.SessionContext;
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32 import org.tmatesoft.hg.repo.HgInternals;
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33 import org.tmatesoft.hg.repo.HgRepoConfig.ExtensionsSection;
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34 import org.tmatesoft.hg.repo.HgRepository;
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35 import org.tmatesoft.hg.util.PathRewrite;
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36
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37 /**
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38 * Fields/members that shall not be visible
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39 *
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40 * @author Artem Tikhomirov
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41 * @author TMate Software Ltd.
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42 */
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43 public class Internals {
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44
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45 public static final String CFG_PROPERTY_HG_INSTALL_ROOT = "hg4j.hg.install_root";
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47 private int requiresFlags = 0;
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48 private List<Filter.Factory> filterFactories;
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50
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51 public Internals() {
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52 }
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53
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54 public void parseRequires(HgRepository hgRepo, File requiresFile) {
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55 try {
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56 new RequiresFile().parse(this, requiresFile);
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57 } catch (IOException ex) {
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58 // FIXME not quite sure error reading requires file shall be silently logged only.
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59 HgInternals.getContext(hgRepo).getLog().error(getClass(), ex, null);
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60 }
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61 }
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63 public/*for tests, otherwise pkg*/ void setStorageConfig(int version, int flags) {
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64 requiresFlags = flags;
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65 }
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67 // XXX perhaps, should keep both fields right here, not in the HgRepository
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68 public PathRewrite buildDataFilesHelper() {
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69 return new StoragePathHelper((requiresFlags & STORE) != 0, (requiresFlags & FNCACHE) != 0, (requiresFlags & DOTENCODE) != 0);
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70 }
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72 public PathRewrite buildRepositoryFilesHelper() {
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73 if ((requiresFlags & STORE) != 0) {
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74 return new PathRewrite() {
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75 public CharSequence rewrite(CharSequence path) {
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76 return "store/" + path;
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77 }
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78 };
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79 } else {
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80 return new PathRewrite.Empty();
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81 }
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82 }
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84 public List<Filter.Factory> getFilters(HgRepository hgRepo) {
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85 if (filterFactories == null) {
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86 filterFactories = new ArrayList<Filter.Factory>();
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87 ExtensionsSection cfg = hgRepo.getConfiguration().getExtensions();
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88 if (cfg.isEnabled("eol")) {
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89 NewlineFilter.Factory ff = new NewlineFilter.Factory();
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90 ff.initialize(hgRepo);
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91 filterFactories.add(ff);
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92 }
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93 if (cfg.isEnabled("keyword")) {
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94 KeywordFilter.Factory ff = new KeywordFilter.Factory();
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95 ff.initialize(hgRepo);
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96 filterFactories.add(ff);
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97 }
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98 }
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99 return filterFactories;
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100 }
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102 public void initEmptyRepository(File hgDir) throws IOException {
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103 hgDir.mkdir();
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104 FileOutputStream requiresFile = new FileOutputStream(new File(hgDir, "requires"));
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105 StringBuilder sb = new StringBuilder(40);
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106 sb.append("revlogv1\n");
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107 if ((requiresFlags & STORE) != 0) {
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108 sb.append("store\n");
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109 }
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110 if ((requiresFlags & FNCACHE) != 0) {
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111 sb.append("fncache\n");
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112 }
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113 if ((requiresFlags & DOTENCODE) != 0) {
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114 sb.append("dotencode\n");
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115 }
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116 requiresFile.write(sb.toString().getBytes());
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117 requiresFile.close();
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118 new File(hgDir, "store").mkdir(); // with that, hg verify says ok.
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119 }
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120
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121 public static boolean runningOnWindows() {
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122 return System.getProperty("os.name").indexOf("Windows") != -1;
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123 }
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124
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125 /**
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126 * For Unix, returns installation root, which is the parent directory of the hg executable (or symlink) being run.
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127 * For Windows, it's Mercurial installation directory itself
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128 * @param ctx
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129 */
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130 private static File findHgInstallRoot(SessionContext ctx) {
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131 // let clients to override Hg install location
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132 String p = (String) ctx.getProperty(CFG_PROPERTY_HG_INSTALL_ROOT, null);
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133 if (p != null) {
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134 return new File(p);
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135 }
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136 StringTokenizer st = new StringTokenizer(System.getenv("PATH"), System.getProperty("path.separator"), false);
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137 final boolean runsOnWin = runningOnWindows();
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138 while (st.hasMoreTokens()) {
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139 String pe = st.nextToken();
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140 File execCandidate = new File(pe, runsOnWin ? "hg.exe" : "hg");
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141 if (execCandidate.exists() && execCandidate.isFile()) {
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142 File execDir = execCandidate.getParentFile();
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143 // e.g. on Unix runs "/shared/tools/bin/hg", directory of interest is "/shared/tools/"
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144 return runsOnWin ? execDir : execDir.getParentFile();
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145 }
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146 }
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147 return null;
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148 }
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149
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150 /**
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151 * @see http://www.selenic.com/mercurial/hgrc.5.html
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152 */
331
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153 public ConfigFile readConfiguration(HgRepository hgRepo, File repoRoot) throws IOException {
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154 ConfigFile configFile = new ConfigFile();
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155 File hgInstallRoot = findHgInstallRoot(HgInternals.getContext(hgRepo)); // may be null
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156 //
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157 if (runningOnWindows()) {
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158 if (hgInstallRoot != null) {
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159 for (File f : getWindowsConfigFilesPerInstall(hgInstallRoot)) {
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160 configFile.addLocation(f);
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161 }
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162 }
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163 LinkedHashSet<String> locations = new LinkedHashSet<String>();
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164 locations.add(System.getenv("USERPROFILE"));
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165 locations.add(System.getenv("HOME"));
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166 locations.remove(null);
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167 for (String loc : locations) {
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168 File location = new File(loc);
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169 configFile.addLocation(new File(location, "Mercurial.ini"));
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170 configFile.addLocation(new File(location, ".hgrc"));
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171 }
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172 } else {
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173 if (hgInstallRoot != null) {
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174 File d = new File(hgInstallRoot, "etc/mercurial/hgrc.d/");
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175 if (d.isDirectory() && d.canRead()) {
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176 for (File f : listConfigFiles(d)) {
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177 configFile.addLocation(f);
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178 }
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179 }
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180 configFile.addLocation(new File(hgInstallRoot, "etc/mercurial/hgrc"));
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181 }
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182 // same, but with absolute paths
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183 File d = new File("/etc/mercurial/hgrc.d/");
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184 if (d.isDirectory() && d.canRead()) {
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185 for (File f : listConfigFiles(d)) {
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186 configFile.addLocation(f);
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187 }
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188 }
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189 configFile.addLocation(new File("/etc/mercurial/hgrc"));
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190 configFile.addLocation(new File(System.getenv("HOME"), ".hgrc"));
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191 }
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192 // last one, overrides anything else
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193 // <repo>/.hg/hgrc
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194 configFile.addLocation(new File(repoRoot, "hgrc"));
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195 return configFile;
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196 }
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197
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198 private static List<File> getWindowsConfigFilesPerInstall(File hgInstallDir) {
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199 File f = new File(hgInstallDir, "Mercurial.ini");
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200 if (f.exists()) {
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201 return Collections.singletonList(f);
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202 }
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203 f = new File(hgInstallDir, "hgrc.d/");
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204 if (f.canRead() && f.isDirectory()) {
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205 return listConfigFiles(f);
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206 }
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207 // FIXME query registry, e.g. with
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208 // Runtime.exec("reg query HKLM\Software\Mercurial")
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209 //
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210 f = new File("C:\\Mercurial\\Mercurial.ini");
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211 if (f.exists()) {
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212 return Collections.singletonList(f);
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213 }
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214 return Collections.emptyList();
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215 }
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216
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217 private static List<File> listConfigFiles(File dir) {
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218 assert dir.canRead();
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219 assert dir.isDirectory();
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220 final File[] allFiles = dir.listFiles();
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221 // File is Comparable, lexicographically by default
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222 Arrays.sort(allFiles);
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223 ArrayList<File> rv = new ArrayList<File>(allFiles.length);
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224 for (File f : allFiles) {
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225 if (f.getName().endsWith(".rc")) {
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226 rv.add(f);
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227 }
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228 }
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229 return rv;
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230 }
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231
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232 public static File getInstallationConfigurationFileToWrite(SessionContext ctx) {
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233 File hgInstallRoot = findHgInstallRoot(ctx); // may be null
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234 // choice of which hgrc to pick here is according to my own pure discretion
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235 if (hgInstallRoot != null) {
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236 // use this location only if it's writable
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237 File cfg = new File(hgInstallRoot, runningOnWindows() ? "Mercurial.ini" : "etc/mercurial/hgrc");
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238 if (cfg.canWrite() || cfg.getParentFile().canWrite()) {
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239 return cfg;
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240 }
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241 }
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242 // fallback
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243 if (runningOnWindows()) {
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244 if (hgInstallRoot == null) {
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245 return new File("C:\\Mercurial\\Mercurial.ini");
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246 } else {
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247 // yes, we tried this file already (above) and found it non-writable
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248 // let caller fail with can't write
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249 return new File(hgInstallRoot, "Mercurial.ini");
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250 }
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251 } else {
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252 return new File("/etc/mercurial/hgrc");
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253 }
378
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254 }
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255
382
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256 public static File getUserConfigurationFileToWrite(SessionContext ctx) {
379
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257 LinkedHashSet<String> locations = new LinkedHashSet<String>();
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258 final boolean runsOnWindows = runningOnWindows();
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259 if (runsOnWindows) {
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260 locations.add(System.getenv("USERPROFILE"));
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261 }
379
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262 locations.add(System.getenv("HOME"));
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263 locations.remove(null);
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264 for (String loc : locations) {
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265 File location = new File(loc);
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266 File rv = new File(location, ".hgrc");
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267 if (rv.exists() && rv.canWrite()) {
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268 return rv;
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269 }
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270 if (runsOnWindows) {
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271 rv = new File(location, "Mercurial.ini");
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272 if (rv.exists() && rv.canWrite()) {
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273 return rv;
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274 }
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275 }
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276 }
379
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277 // fallback to default, let calling code fail with Exception if can't write
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278 return new File(System.getProperty("user.home"), ".hgrc");
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279 }
74
6f1b88693d48 Complete refactoring to org.tmatesoft
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280 }