src/gui/util/qdesktopservices_x11.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Mon, 04 Oct 2010 01:19:32 +0300
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Revision: 201037 Kit: 201039
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/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the QtGui module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file.  Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights.  These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qdesktopservices.h"
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#ifndef QT_NO_DESKTOPSERVICES
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#include <qprocess.h>
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#include <qurl.h>
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#include <qdir.h>
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#include <qfile.h>
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#include <qtextstream.h>
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#include <private/qt_x11_p.h>
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#include <qcoreapplication.h>
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#include <stdlib.h>
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QT_BEGIN_NAMESPACE
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inline static bool launch(const QUrl &url, const QString &client)
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{
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#if !defined(QT_NO_PROCESS)
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    return (QProcess::startDetached(client + QLatin1Char(' ') + QString::fromLatin1(url.toEncoded().constData())));
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#else
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    return (::system((client + QLatin1Char(' ') + QString::fromLatin1(url.toEncoded().constData())).toLocal8Bit().constData()) != -1);
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#endif
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}
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static bool openDocument(const QUrl &url)
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{
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    if (!url.isValid())
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        return false;
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    if (launch(url, QLatin1String("xdg-open")))
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        return true;
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    // Use the X11->desktopEnvironment value if X11 is non-NULL,
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    //  otherwise just attempt to launch command regardless of the desktop environment
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    if ((!X11 || (X11 && X11->desktopEnvironment == DE_GNOME)) && launch(url, QLatin1String("gnome-open"))) {
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        return true;
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    } else {
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        if ((!X11 || (X11 && X11->desktopEnvironment == DE_KDE)) && launch(url, QLatin1String("kfmclient exec")))
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            return true;
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    }
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    if (launch(url, QLatin1String("firefox")))
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        return true;
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    if (launch(url, QLatin1String("mozilla")))
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        return true;
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    if (launch(url, QLatin1String("netscape")))
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        return true;
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    if (launch(url, QLatin1String("opera")))
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        return true;
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    return false;
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}
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static bool launchWebBrowser(const QUrl &url)
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{
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    if (!url.isValid())
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        return false;
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    if (url.scheme() == QLatin1String("mailto"))
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        return openDocument(url);
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    if (launch(url, QLatin1String("xdg-open")))
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        return true;
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    if (launch(url, QString::fromLocal8Bit(getenv("DEFAULT_BROWSER"))))
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        return true;
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    if (launch(url, QString::fromLocal8Bit(getenv("BROWSER"))))
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        return true;
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    // Use the X11->desktopEnvironment value if X11 is non-NULL,
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    //  otherwise just attempt to launch command regardless of the desktop environment
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    if ((!X11 || (X11 && X11->desktopEnvironment == DE_GNOME)) && launch(url, QLatin1String("gnome-open"))) {
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        return true;
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    } else {
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        if ((!X11 || (X11 && X11->desktopEnvironment == DE_KDE)) && launch(url, QLatin1String("kfmclient openURL")))
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            return true;
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    }
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    if (launch(url, QLatin1String("firefox")))
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        return true;
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    if (launch(url, QLatin1String("mozilla")))
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        return true;
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    if (launch(url, QLatin1String("netscape")))
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        return true;
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    if (launch(url, QLatin1String("opera")))
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        return true;
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    return false;
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}
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QString QDesktopServices::storageLocation(StandardLocation type)
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{
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    if (type == QDesktopServices::HomeLocation)
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        return QDir::homePath();
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    if (type == QDesktopServices::TempLocation)
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        return QDir::tempPath();
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    // http://standards.freedesktop.org/basedir-spec/basedir-spec-0.6.html
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    if (type == QDesktopServices::CacheLocation) {
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        QString xdgCacheHome = QLatin1String(qgetenv("XDG_CACHE_HOME"));
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        if (xdgCacheHome.isEmpty())
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            xdgCacheHome = QDir::homePath() + QLatin1String("/.cache");
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        xdgCacheHome += QLatin1Char('/') + QCoreApplication::organizationName()
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                    + QLatin1Char('/') + QCoreApplication::applicationName();
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        return xdgCacheHome;
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    }
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    if (type == QDesktopServices::DataLocation) {
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        QString xdgDataHome = QLatin1String(qgetenv("XDG_DATA_HOME"));
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        if (xdgDataHome.isEmpty())
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            xdgDataHome = QDir::homePath() + QLatin1String("/.local/share");
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        xdgDataHome += QLatin1String("/data/")
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                    + QCoreApplication::organizationName() + QLatin1Char('/')
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                    + QCoreApplication::applicationName();
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        return xdgDataHome;
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    }
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    // http://www.freedesktop.org/wiki/Software/xdg-user-dirs
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    QString xdgConfigHome = QLatin1String(qgetenv("XDG_CONFIG_HOME"));
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    if (xdgConfigHome.isEmpty())
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        xdgConfigHome = QDir::homePath() + QLatin1String("/.config");
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    QFile file(xdgConfigHome + QLatin1String("/user-dirs.dirs"));
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    if (file.exists() && file.open(QIODevice::ReadOnly)) {
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        QHash<QString, QString> lines;
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        QTextStream stream(&file);
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        // Only look for lines like: XDG_DESKTOP_DIR="$HOME/Desktop"
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        QRegExp exp(QLatin1String("^XDG_(.*)_DIR=(.*)$"));
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        while (!stream.atEnd()) {
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            QString line = stream.readLine();
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            if (exp.indexIn(line) != -1) {
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                QStringList lst = exp.capturedTexts();
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                QString key = lst.at(1);
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                QString value = lst.at(2);
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                if (value.length() > 2
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                    && value.startsWith(QLatin1Char('\"'))
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                    && value.endsWith(QLatin1Char('\"')))
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                    value = value.mid(1, value.length() - 2);
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                // Store the key and value: "DESKTOP", "$HOME/Desktop"
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                lines[key] = value;
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            }
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        }
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        QString key;
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        switch (type) {
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        case DesktopLocation: key = QLatin1String("DESKTOP"); break;
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        case DocumentsLocation: key = QLatin1String("DOCUMENTS"); break;
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        case PicturesLocation: key = QLatin1String("PICTURES"); break;
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        case MusicLocation: key = QLatin1String("MUSIC"); break;
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        case MoviesLocation: key = QLatin1String("VIDEOS"); break;
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        default: break;
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        }
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        if (!key.isEmpty() && lines.contains(key)) {
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            QString value = lines[key];
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            // value can start with $HOME
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            if (value.startsWith(QLatin1String("$HOME")))
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                value = QDir::homePath() + value.mid(5);
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            return value;
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        }
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    }
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    QDir emptyDir;
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    QString path;
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    switch (type) {
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    case DesktopLocation:
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        path = QDir::homePath() + QLatin1String("/Desktop");
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        break;
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    case DocumentsLocation:
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        path = QDir::homePath() + QLatin1String("/Documents");
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       break;
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    case PicturesLocation:
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        path = QDir::homePath() + QLatin1String("/Pictures");
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        break;
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    case FontsLocation:
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        path = QDir::homePath() + QLatin1String("/.fonts");
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        break;
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    case MusicLocation:
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        path = QDir::homePath() + QLatin1String("/Music");
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        break;
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   221
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    case MoviesLocation:
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        path = QDir::homePath() + QLatin1String("/Videos");
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        break;
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    case ApplicationsLocation:
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    default:
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        break;
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    }
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    return path;
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}
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QString QDesktopServices::displayName(StandardLocation type)
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{
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    Q_UNUSED(type);
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    return QString();
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}
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QT_END_NAMESPACE
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#endif // QT_NO_DESKTOPSERVICES