annotate src/SettingsPaths.cpp @ 714:3363b7bb0d41

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author thomas_-_s <thomas_-_s@59b1889a-e5ac-428c-b0c7-476e01d41282>
date Mon, 27 Jul 2009 15:17:08 +0000
parents 90002ae3ddc9
children b9123ff53106
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1 /***************************************************************************
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2 * Copyright (C) 2006-2009 by Thomas Schweitzer *
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3 * thomas-schweitzer(at)arcor.de *
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4 * *
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5 * This program is free software; you can redistribute it and/or modify *
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6 * it under the terms of the GNU General Public License version 2.0 as *
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7 * published by the Free Software Foundation. *
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8 * *
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9 * This program is distributed in the hope that it will be useful, *
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10 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
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11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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12 * GNU General Public License for more details. *
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13 * *
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14 * You should have received a copy of the GNU General Public License *
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15 * along with this program in the file LICENSE.GPL; if not, write to the *
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16 * Free Software Foundation, Inc., *
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17 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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18 ***************************************************************************/
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19
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20
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21 #include <stdlib.h>
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22 #include <QDirIterator>
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23 #include <QStack>
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24 #include <QtDebug>
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25
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26 #include "SettingsPaths.h"
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27
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28
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29 //! \defgroup grp_Settings All concerning applications settings.
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30
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31 /*!
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32 \class SettingsPaths
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33 \ingroup grp_Settings
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34 \brief SettingsPaths is a pure static functions class from which info about the
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35 paths needed for settings can be retrieved.
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36 */
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37
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38 bool SettingsPaths::alreadyInitialized = false;
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39 QString SettingsPaths::applicationBinaryPath = "";
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40 QString SettingsPaths::settingsPath = "";
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41 QString SettingsPaths::globalFilesPath = "";
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42 QString SettingsPaths::indenterPath = "";
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43 QString SettingsPaths::tempPath = "";
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44 bool SettingsPaths::portableMode = false;
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45
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46
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47 /*!
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48 \brief Initializes all available information about the paths.
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49
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50 Mainly during this init it is detected whether to start in portable mode or not. This is
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51 done by testing whether the directory "config" is in the same directory as this
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52 applications executable file.
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53 In portable mode all data is ONLY written to subdirectories of the applications executable file.
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54 Means also that the directory "indenters" has to be there.
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55 In not portable mode (multiuser mode) only users home directory is used for writing config data.
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56 */
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57 void SettingsPaths::init() {
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58 alreadyInitialized = true;
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59
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60 qDebug() << __LINE__ << " " << __FUNCTION__ << ": Initializing application paths.";
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61
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62 // Get the applications binary path, with respect to MacOSXs use of the .app folder.
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63 applicationBinaryPath = QCoreApplication::applicationDirPath();
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64 // Remove any trailing slashes
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65 while ( applicationBinaryPath.right(1) == "/" ) {
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66 applicationBinaryPath.chop(1);
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67 }
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68
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69 #ifdef UNIVERSALINDENTGUI_NPP_EXPORTS
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70 applicationBinaryPath += "/plugins/uigui";
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71 #endif
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72
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73 #ifdef Q_OS_MAC
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74 // Because on Mac universal binaries are used, the binary path is not equal
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75 // to the applications (.app) path. So get the .apps path here.
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76 int indexOfDotApp = applicationBinaryPath.indexOf(".app");
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77 if ( indexOfDotApp != -1 ) {
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78 // Cut off after the dot of ".app".
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79 applicationBinaryPath = applicationBinaryPath.left( indexOfDotApp-1 );
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80 // Cut off after the first slash that was in front of ".app" (normally this is the word "UniversalIndentGUI")
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81 applicationBinaryPath = applicationBinaryPath.left( applicationBinaryPath.lastIndexOf("/") );
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82 }
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83 #endif
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84
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85 // If the "config" directory is a subdir of the applications binary path, use this one (portable mode)
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86 settingsPath = applicationBinaryPath + "/config";
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87 if ( QFile::exists( settingsPath ) ) {
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88 portableMode = true;
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89 QDir dirCreator;
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90 globalFilesPath = applicationBinaryPath;
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91 indenterPath = applicationBinaryPath + "/indenters";
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92 dirCreator.mkpath( settingsPath );
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93 tempPath = applicationBinaryPath + "/temp";
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94 //TODO: If the portable drive has write protection, use local temp path and clean it up on exit.
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95 dirCreator.mkpath( tempPath );
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96 }
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97 // ... otherwise use the system specific global application data path.
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98 else {
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99 portableMode = false;
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100 QDir dirCreator;
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101 #ifdef Q_OS_WIN
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102 // Get the local users application settings directory.
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103 // Remove any trailing slashes.
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104 settingsPath = QDir::fromNativeSeparators( qgetenv("APPDATA") );
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105 while ( settingsPath.right(1) == "/" ) {
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106 settingsPath.chop(1);
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107 }
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108 settingsPath = settingsPath + "/UniversalIndentGUI";
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109
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110 // On windows systems the directories "indenters", "translations" are subdirs of the applicationBinaryPath.
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111 globalFilesPath = applicationBinaryPath;
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112 #else
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113 // Remove any trailing slashes.
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114 settingsPath = QDir::homePath();
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115 while ( settingsPath.right(1) == "/" ) {
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116 settingsPath.chop(1);
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117 }
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118 settingsPath = settingsPath + "/.universalindentgui";
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119 globalFilesPath = "/usr/share/universalindentgui";
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120 #endif
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121 dirCreator.mkpath( settingsPath );
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122 // If a highlighter config file does not exist in the users home config dir
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123 // copy the default config file over there.
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124 if ( !QFile::exists(settingsPath+"/UiGuiSyntaxHighlightConfig.ini") ) {
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125 QFile::copy( globalFilesPath+"/config/UiGuiSyntaxHighlightConfig.ini", settingsPath+"/UiGuiSyntaxHighlightConfig.ini" );
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126 }
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127 indenterPath = globalFilesPath + "/indenters";
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128
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129 // On different systems it may be that "QDir::tempPath()" ends with a "/" or not. So check this.
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130 // Remove any trailing slashes.
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131 tempPath = QDir::tempPath();
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132 while ( tempPath.right(1) == "/" ) {
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133 tempPath.chop(1);
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134 }
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135 tempPath = tempPath + "/UniversalIndentGUI";
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136
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137 #if defined(Q_OS_WIN32)
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138 dirCreator.mkpath( tempPath );
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139 #else
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140 // On Unix based systems create a random temporary directory for security
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141 // reasons. Otherwise an evil human being could create a symbolic link
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142 // to an important existing file which gets overwritten when UiGUI writes
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143 // into this normally temporary but linked file.
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144 char *pathTemplate = new char[tempPath.length()+8];
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145 QByteArray pathTemplateQBA = QString(tempPath + "-XXXXXX").toAscii();
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146 delete pathTemplate;
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147 pathTemplate = pathTemplateQBA.data();
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148 pathTemplate = mkdtemp( pathTemplate );
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149 tempPath = pathTemplate;
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150 #endif
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151 }
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152
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153 qDebug() << __LINE__ << " " << __FUNCTION__ << ": Paths are:" \
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154 "<ul><li>applicationBinaryPath=" << applicationBinaryPath \
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155 << "</li><li>settingsPath=" << settingsPath \
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156 << "</li><li>globalFilesPath=" << globalFilesPath \
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157 << "</li><li>indenterPath=" << indenterPath \
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158 << "</li><li>tempPath=" << tempPath \
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159 << "</li><li>Running in portable mode=" << portableMode << "</li></ul>";
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160 }
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161
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162
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163 /*!
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164 \brief Returns the path of the applications executable.
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165 */
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166 const QString SettingsPaths::getApplicationBinaryPath() {
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167 if ( !alreadyInitialized ) {
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168 SettingsPaths::init();
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169 }
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170 return applicationBinaryPath;
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171 }
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172
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173
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174 /*!
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175 \brief Returns the path where all settings are being/should be written to.
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176 */
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177 const QString SettingsPaths::getSettingsPath() {
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178 if ( !alreadyInitialized ) {
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179 SettingsPaths::init();
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180 }
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181 return settingsPath;
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182 }
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183
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184
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185 /*!
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186 \brief Returns the path where the files concerning all users reside. For example translations.
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187 */
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188 const QString SettingsPaths::getGlobalFilesPath() {
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189 if ( !alreadyInitialized ) {
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190 SettingsPaths::init();
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191 }
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192 return globalFilesPath;
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193 }
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194
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195
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196 /*!
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197 \brief Returns the path where the indenter executables reside.
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198 */
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199 const QString SettingsPaths::getIndenterPath() {
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200 if ( !alreadyInitialized ) {
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201 SettingsPaths::init();
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202 }
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203 return indenterPath;
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204 }
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205
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206
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207 /*!
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208 \brief Returns the path where the where all temporary data should be written to.
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209 */
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210 const QString SettingsPaths::getTempPath() {
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211 if ( !alreadyInitialized ) {
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212 SettingsPaths::init();
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213 }
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214 return tempPath;
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215 }
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216
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217
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218 /*!
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219 \brief Returns true if portable mode shall be used.
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220 */
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221 bool SettingsPaths::getPortableMode() {
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222 if ( !alreadyInitialized ) {
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223 SettingsPaths::init();
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224 }
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225 return portableMode;
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226 }
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227
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228
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229 /*!
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230 \brief Completely deletes the created temporary directory with all of its content.
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231 */
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232 void SettingsPaths::cleanAndRemoveTempDir() {
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233 QDirIterator dirIterator(tempPath, QDirIterator::Subdirectories);
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234 QStack<QString> directoryStack;
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235 bool noErrorsOccurred = true;
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236
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237 while ( dirIterator.hasNext() ) {
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238 QString currentDirOrFile = dirIterator.next();
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239 // If this dummy call isn't done here, calling "dirIterator.fileInfo().isDir()" later somehow fails.
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240 dirIterator.fileInfo();
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241
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242 if ( !currentDirOrFile.isEmpty() && dirIterator.fileName() != "." && dirIterator.fileName() != ".." ) {
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243 // There is a path on the stack but the current path doesn't start with that path.
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244 // So we changed into another parent directory and the one on the stack can be deleted
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245 // since it must be empty.
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246 if ( !directoryStack.isEmpty() && !currentDirOrFile.startsWith(directoryStack.top()) ) {
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247 QString dirToBeRemoved = directoryStack.pop();
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248 bool couldRemoveDir = QDir(dirToBeRemoved).rmdir(dirToBeRemoved);
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249 noErrorsOccurred &= couldRemoveDir;
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250 if ( couldRemoveDir == false )
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251 qWarning() << __LINE__ << " " << __FUNCTION__ << "Could not remove the directory: " << dirToBeRemoved;
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252 //qDebug() << "Removing Dir " << directoryStack.pop();
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253 }
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254
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255 // If the iterator currently points to a directory push it onto the stack.
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256 if ( dirIterator.fileInfo().isDir() ) {
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257 directoryStack.push( currentDirOrFile );
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258 //qDebug() << "Pushing onto Stack " << currentDirOrFile;
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259 }
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260 // otherwise it must be a file, so delete it.
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261 else {
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262 bool couldRemoveFile = QFile::remove( currentDirOrFile );
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263 noErrorsOccurred &= couldRemoveFile;
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264 if ( couldRemoveFile == false )
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265 qWarning() << __LINE__ << " " << __FUNCTION__ << "Could not remove the file: " << currentDirOrFile;
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266 //qDebug() << "Removing File " << currentDirOrFile;
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267 }
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268 }
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269 }
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270 noErrorsOccurred &= QDir(tempPath).rmdir(tempPath);
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271 if ( noErrorsOccurred == false )
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272 qWarning() << __LINE__ << " " << __FUNCTION__ << "While cleaning up the temp dir an error occurred.";
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273 }