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annotate libgui/languages/build_ts/octave-qt/qfileinfogatherer.cpp @ 31537:5ceb4bfcdb0f stable

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add tools and files for updating the gui's language files for translation * libgui/languages/build_ts/README.md: readme for updating language files * libgui/languages/build_ts/octave-qsci: QScintilla source files for languages without translation provided by QScintilla * libgui/languages/build_ts/octave-qt: Qt source files for languages without translation provided by Qt
author Torsten Lilge <ttl-octave@mailbox.org>
date Thu, 24 Nov 2022 06:48:25 +0100
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children c8dd3da44e83
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1 /****************************************************************************
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2 **
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3 ** Copyright (C) 2015 The Qt Company Ltd.
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4 ** Contact: http://www.qt.io/licensing/
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5 **
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6 ** This file is part of the QtGui module of the Qt Toolkit.
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7 **
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8 ** $QT_BEGIN_LICENSE:LGPL$
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9 ** Commercial License Usage
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10 ** Licensees holding valid commercial Qt licenses may use this file in
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11 ** accordance with the commercial license agreement provided with the
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12 ** Software or, alternatively, in accordance with the terms contained in
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13 ** a written agreement between you and The Qt Company. For licensing terms
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14 ** and conditions see http://www.qt.io/terms-conditions. For further
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15 ** information use the contact form at http://www.qt.io/contact-us.
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16 **
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17 ** GNU Lesser General Public License Usage
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18 ** Alternatively, this file may be used under the terms of the GNU Lesser
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19 ** General Public License version 2.1 or version 3 as published by the Free
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20 ** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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21 ** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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22 ** following information to ensure the GNU Lesser General Public License
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23 ** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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24 ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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25 **
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26 ** As a special exception, The Qt Company gives you certain additional
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27 ** rights. These rights are described in The Qt Company LGPL Exception
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28 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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29 **
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30 ** GNU General Public License Usage
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31 ** Alternatively, this file may be used under the terms of the GNU
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32 ** General Public License version 3.0 as published by the Free Software
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33 ** Foundation and appearing in the file LICENSE.GPL included in the
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34 ** packaging of this file. Please review the following information to
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35 ** ensure the GNU General Public License version 3.0 requirements will be
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36 ** met: http://www.gnu.org/copyleft/gpl.html.
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37 **
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38 ** $QT_END_LICENSE$
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39 **
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40 ****************************************************************************/
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41
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42 #include "qfileinfogatherer_p.h"
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43 #include <qdebug.h>
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44 #include <qfsfileengine.h>
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45 #include <qdiriterator.h>
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46 #ifndef Q_OS_WIN
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47 # include <unistd.h>
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48 # include <sys/types.h>
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49 #endif
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50 #if defined(Q_OS_VXWORKS)
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51 # include "qplatformdefs.h"
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52 #endif
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53
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54 QT_BEGIN_NAMESPACE
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55
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56 #ifndef QT_NO_FILESYSTEMMODEL
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57
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58 #ifdef QT_BUILD_INTERNAL
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59 static bool fetchedRoot = false;
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60 Q_AUTOTEST_EXPORT void qt_test_resetFetchedRoot()
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61 {
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62 fetchedRoot = false;
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63 }
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64
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65 Q_AUTOTEST_EXPORT bool qt_test_isFetchedRoot()
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66 {
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67 return fetchedRoot;
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68 }
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69 #endif
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70
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71 /*!
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72 Creates thread
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73 */
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74 QFileInfoGatherer::QFileInfoGatherer(QObject *parent)
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75 : QThread(parent), abort(false),
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76 #ifndef QT_NO_FILESYSTEMWATCHER
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77 watcher(0),
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78 #endif
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79 m_resolveSymlinks(false), m_iconProvider(&defaultProvider)
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80 {
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81 #ifdef Q_OS_WIN
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82 m_resolveSymlinks = true;
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83 #elif !defined(Q_OS_INTEGRITY) && !defined(Q_OS_VXWORKS)
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84 userId = getuid();
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85 groupId = getgid();
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86 #endif
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87 #ifndef QT_NO_FILESYSTEMWATCHER
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88 watcher = new QFileSystemWatcher(this);
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89 connect(watcher, SIGNAL(directoryChanged(QString)), this, SLOT(list(QString)));
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90 connect(watcher, SIGNAL(fileChanged(QString)), this, SLOT(updateFile(QString)));
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91 #endif
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92 start(LowPriority);
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93 }
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94
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95 /*!
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96 Destroys thread
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97 */
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98 QFileInfoGatherer::~QFileInfoGatherer()
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99 {
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100 QMutexLocker locker(&mutex);
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101 abort = true;
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102 condition.wakeOne();
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103 locker.unlock();
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104 wait();
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105 }
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106
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107 void QFileInfoGatherer::setResolveSymlinks(bool enable)
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108 {
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109 Q_UNUSED(enable);
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110 #ifdef Q_OS_WIN
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111 QMutexLocker locker(&mutex);
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112 m_resolveSymlinks = enable;
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113 #endif
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114 }
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115
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116 bool QFileInfoGatherer::resolveSymlinks() const
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117 {
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118 return m_resolveSymlinks;
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119 }
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120
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121 void QFileInfoGatherer::setIconProvider(QFileIconProvider *provider)
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122 {
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123 QMutexLocker locker(&mutex);
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124 m_iconProvider = provider;
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125 }
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126
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127 QFileIconProvider *QFileInfoGatherer::iconProvider() const
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128 {
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129 return m_iconProvider;
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130 }
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131
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132 /*!
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133 Fetch extended information for all \a files in \a path
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134
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135 \sa updateFile(), update(), resolvedName()
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136 */
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137 void QFileInfoGatherer::fetchExtendedInformation(const QString &path, const QStringList &files)
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138 {
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139 QMutexLocker locker(&mutex);
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140 // See if we already have this dir/file in our que
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141 int loc = this->path.lastIndexOf(path);
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142 while (loc > 0) {
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143 if (this->files.at(loc) == files) {
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144 return;
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145 }
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146 loc = this->path.lastIndexOf(path, loc - 1);
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147 }
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148 this->path.push(path);
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149 this->files.push(files);
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150 condition.wakeAll();
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151 }
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152
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153 /*!
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154 Fetch extended information for all \a filePath
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155
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156 \sa fetchExtendedInformation()
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157 */
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158 void QFileInfoGatherer::updateFile(const QString &filePath)
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159 {
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160 QString dir = filePath.mid(0, filePath.lastIndexOf(QDir::separator()));
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161 QString fileName = filePath.mid(dir.length() + 1);
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162 fetchExtendedInformation(dir, QStringList(fileName));
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163 }
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164
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165 /*
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166 List all files in \a directoryPath
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167
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168 \sa listed()
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169 */
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170 void QFileInfoGatherer::clear()
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171 {
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172 #ifndef QT_NO_FILESYSTEMWATCHER
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173 QMutexLocker locker(&mutex);
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174 watcher->removePaths(watcher->files());
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175 watcher->removePaths(watcher->directories());
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176 #endif
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177 }
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178
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179 /*
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180 Remove a \a path from the watcher
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181
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182 \sa listed()
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183 */
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184 void QFileInfoGatherer::removePath(const QString &path)
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185 {
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186 #ifndef QT_NO_FILESYSTEMWATCHER
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187 QMutexLocker locker(&mutex);
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188 watcher->removePath(path);
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189 #endif
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190 }
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191
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192 /*
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193 List all files in \a directoryPath
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194
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195 \sa listed()
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196 */
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197 void QFileInfoGatherer::list(const QString &directoryPath)
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198 {
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199 fetchExtendedInformation(directoryPath, QStringList());
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200 }
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201
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202 /*
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203 Until aborted wait to fetch a directory or files
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204 */
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205 void QFileInfoGatherer::run()
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206 {
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207 forever {
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208 bool updateFiles = false;
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209 QMutexLocker locker(&mutex);
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210 if (abort) {
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211 return;
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212 }
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213 if (this->path.isEmpty())
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214 condition.wait(&mutex);
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215 QString path;
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216 QStringList list;
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217 if (!this->path.isEmpty()) {
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218 path = this->path.first();
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219 list = this->files.first();
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220 this->path.pop_front();
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221 this->files.pop_front();
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222 updateFiles = true;
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223 }
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224 locker.unlock();
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225 if (updateFiles)
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226 getFileInfos(path, list);
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227 }
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228 }
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229
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230 QExtendedInformation QFileInfoGatherer::getInfo(const QFileInfo &fileInfo) const
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231 {
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232 QExtendedInformation info(fileInfo);
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233 info.icon = m_iconProvider->icon(fileInfo);
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234 info.displayType = m_iconProvider->type(fileInfo);
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235 #ifndef QT_NO_FILESYSTEMWATCHER
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236 // ### Not ready to listen all modifications
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237 #if 0
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238 // Enable the next two commented out lines to get updates when the file sizes change...
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239 if (!fileInfo.exists() && !fileInfo.isSymLink()) {
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240 info.size = -1;
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241 //watcher->removePath(fileInfo.absoluteFilePath());
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242 } else {
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243 if (!fileInfo.absoluteFilePath().isEmpty() && fileInfo.exists() && fileInfo.isReadable()
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244 && !watcher->files().contains(fileInfo.absoluteFilePath())) {
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245 //watcher->addPath(fileInfo.absoluteFilePath());
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246 }
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247 }
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248 #endif
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249 #endif
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250
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251 if (m_resolveSymlinks && info.isSymLink(/* ignoreNtfsSymLinks = */ true)) {
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252 QFileInfo resolvedInfo(fileInfo.symLinkTarget());
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253 resolvedInfo = resolvedInfo.canonicalFilePath();
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254 if (resolvedInfo.exists()) {
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255 emit nameResolved(fileInfo.filePath(), resolvedInfo.fileName());
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256 }
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257 }
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258 return info;
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259 }
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260
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261 QString QFileInfoGatherer::translateDriveName(const QFileInfo &drive) const
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262 {
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263 QString driveName = drive.absoluteFilePath();
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264 #if defined(Q_OS_WIN) && !defined(Q_OS_WINCE)
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265 if (driveName.startsWith(QLatin1Char('/'))) // UNC host
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266 return drive.fileName();
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267 #endif
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268 #if (defined(Q_OS_WIN) && !defined(Q_OS_WINCE)) || defined(Q_OS_SYMBIAN)
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269 if (driveName.endsWith(QLatin1Char('/')))
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270 driveName.chop(1);
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271 #endif
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272 return driveName;
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273 }
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274
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275 /*
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276 Get specific file info's, batch the files so update when we have 100
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277 items and every 200ms after that
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278 */
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279 void QFileInfoGatherer::getFileInfos(const QString &path, const QStringList &files)
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280 {
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281 #ifndef QT_NO_FILESYSTEMWATCHER
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282 if (files.isEmpty()
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283 && !watcher->directories().contains(path)
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284 && !path.isEmpty()
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285 && !path.startsWith(QLatin1String("//")) /*don't watch UNC path*/) {
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286 watcher->addPath(path);
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287 }
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288 #endif
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289
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290 // List drives
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291 if (path.isEmpty()) {
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292 #ifdef QT_BUILD_INTERNAL
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293 fetchedRoot = true;
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294 #endif
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295 QFileInfoList infoList;
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296 if (files.isEmpty()) {
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297 infoList = QDir::drives();
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298 } else {
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299 for (int i = 0; i < files.count(); ++i)
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300 infoList << QFileInfo(files.at(i));
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301 }
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302 for (int i = infoList.count() - 1; i >= 0; --i) {
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303 QString driveName = translateDriveName(infoList.at(i));
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304 QList<QPair<QString,QFileInfo> > updatedFiles;
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305 updatedFiles.append(QPair<QString,QFileInfo>(driveName, infoList.at(i)));
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306 emit updates(path, updatedFiles);
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307 }
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308 return;
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309 }
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310
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311 QElapsedTimer base;
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312 base.start();
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313 QFileInfo fileInfo;
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314 bool firstTime = true;
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315 QList<QPair<QString, QFileInfo> > updatedFiles;
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316 QStringList filesToCheck = files;
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317
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318 QString itPath = QDir::fromNativeSeparators(files.isEmpty() ? path : QLatin1String(""));
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319 QDirIterator dirIt(itPath, QDir::AllEntries | QDir::System | QDir::Hidden);
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320 QStringList allFiles;
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321 while(!abort && dirIt.hasNext()) {
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322 dirIt.next();
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323 fileInfo = dirIt.fileInfo();
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324 allFiles.append(fileInfo.fileName());
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325 fetch(fileInfo, base, firstTime, updatedFiles, path);
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326 }
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327 if (!allFiles.isEmpty())
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328 emit newListOfFiles(path, allFiles);
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329
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330 QStringList::const_iterator filesIt = filesToCheck.constBegin();
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331 while(!abort && filesIt != filesToCheck.constEnd()) {
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332 fileInfo.setFile(path + QDir::separator() + *filesIt);
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333 ++filesIt;
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334 fetch(fileInfo, base, firstTime, updatedFiles, path);
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335 }
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336 if (!updatedFiles.isEmpty())
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337 emit updates(path, updatedFiles);
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338 emit directoryLoaded(path);
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339 }
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340
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341 void QFileInfoGatherer::fetch(const QFileInfo &fileInfo, QElapsedTimer &base, bool &firstTime, QList<QPair<QString, QFileInfo> > &updatedFiles, const QString &path) {
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342 updatedFiles.append(QPair<QString, QFileInfo>(fileInfo.fileName(), fileInfo));
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343 QElapsedTimer current;
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344 current.start();
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345 if ((firstTime && updatedFiles.count() > 100) || base.msecsTo(current) > 1000) {
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346 emit updates(path, updatedFiles);
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347 updatedFiles.clear();
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348 base = current;
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349 firstTime = false;
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350 }
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351 }
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352
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353 #endif // QT_NO_FILESYSTEMMODEL
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354
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355 QT_END_NAMESPACE