src/global/qmobilitypluginsearch.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Mon, 04 Oct 2010 01:37:06 +0300
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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 Qt Mobility Components.
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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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#ifndef QMOBILITYPLUGINSEARCH_H
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#define QMOBILITYPLUGINSEARCH_H
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#include <QApplication>
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#include <QStringList>
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#include <QDir>
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#if defined(Q_OS_SYMBIAN)
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# include <f32file.h>
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#endif
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QTM_BEGIN_NAMESPACE
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//class DirChecker
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//{
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//public:
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//    DirChecker();
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//    ~DirChecker();
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//    bool checkDir(const QDir& dir);
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//private:
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//#if defined(Q_OS_SYMBIAN)
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//    RFs rfs;
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//#endif
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//};
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//#if defined(Q_OS_SYMBIAN)
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//DirChecker::DirChecker()
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//{
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//    qt_symbian_throwIfError(rfs.Connect());
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//}
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//bool DirChecker::checkDir(const QDir& dir)
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//{
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//    bool pathFound = false;
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//    // In Symbian, going cdUp() in a c:/private/<uid3>/ will result in *platsec* error at fileserver (requires AllFiles capability)
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//    // Also, trying to cd() to a nonexistent directory causes *platsec* error. This does not cause functional harm, but should
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//    // nevertheless be changed to use native Symbian methods to avoid unnecessary platsec warnings (as per qpluginloader.cpp).
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//    // Use native Symbian code to check for directory existence, because checking
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//    // for files from under non-existent protected dir like E:/private/<uid> using
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//    // QDir::exists causes platform security violations on most apps.
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//    QString nativePath = QDir::toNativeSeparators(dir.absolutePath());
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//    TPtrC ptr = TPtrC16(static_cast<const TUint16*>(nativePath.utf16()), nativePath.length());
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//    TUint attributes;
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//    TInt err = rfs.Att(ptr, attributes);
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//    if (err == KErrNone) {
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//        // yes, the directory exists.
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//        pathFound = true;
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//    }
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//    return pathFound;
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//}
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//DirChecker::~DirChecker()
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//{
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//    rfs.Close();
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//}
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//#else
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//DirChecker::DirChecker()
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//{
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//}
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//DirChecker::~DirChecker()
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//{
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//}
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//bool DirChecker::checkDir(const QDir &dir)
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//{
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//    return dir.exists();
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//}
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//#endif
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#if defined(Q_OS_SYMBIAN)
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    inline bool checkMobilityPluginsDir(const QDir &dir)
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    {
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        RFs rfs;
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        qt_symbian_throwIfError(rfs.Connect());
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        bool pathFound = false;
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        // In Symbian, going cdUp() in a c:/private/<uid3>/ will result in *platsec* error at fileserver (requires AllFiles capability)
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        // Also, trying to cd() to a nonexistent directory causes *platsec* error. This does not cause functional harm, but should
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        // nevertheless be changed to use native Symbian methods to avoid unnecessary platsec warnings (as per qpluginloader.cpp).
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        // Use native Symbian code to check for directory existence, because checking
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        // for files from under non-existent protected dir like E:/private/<uid> using
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        // QDir::exists causes platform security violations on most apps.
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        QString nativePath = QDir::toNativeSeparators(dir.absolutePath());
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        TPtrC ptr = TPtrC16(static_cast<const TUint16*>(nativePath.utf16()), nativePath.length());
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        TUint attributes;
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        TInt err = rfs.Att(ptr, attributes);
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        if (err == KErrNone) {
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            // yes, the directory exists.
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            pathFound = true;
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        }
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        rfs.Close();
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        return pathFound;
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    }
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#else
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    inline bool checkMobilityPluginsDir(const QDir &dir)
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    {
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        return dir.exists();
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    }
0
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#endif
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inline QStringList mobilityPlugins(const QString plugintype)
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{
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#if !defined QT_NO_DEBUG
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    const bool showDebug = qgetenv("QT_DEBUG_PLUGINS").toInt() > 0;
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#endif
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    QStringList paths = QApplication::libraryPaths();
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#ifdef QTM_PLUGIN_PATH
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    paths << QLatin1String(QTM_PLUGIN_PATH);
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#endif
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#if !defined QT_NO_DEBUG
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    if (showDebug)
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        qDebug() << "Plugin paths:" << paths;
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#endif
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5
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    //DirChecker dirChecker;
0
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    //temp variable to avoid multiple identic path
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    QSet<QString> processed;
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    /* Discover a bunch o plugins */
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    QStringList plugins;
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    /* Enumerate our plugin paths */
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    for (int i=0; i < paths.count(); i++) {
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        if (processed.contains(paths.at(i)))
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            continue;
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        processed.insert(paths.at(i));
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        QDir pluginsDir(paths.at(i));
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        if (!checkMobilityPluginsDir(pluginsDir))
0
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            continue;
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#if defined(Q_OS_WIN)
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        if (pluginsDir.dirName().toLower() == QLatin1String("debug") || pluginsDir.dirName().toLower() == QLatin1String("release"))
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            pluginsDir.cdUp();
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#elif defined(Q_OS_MAC)
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        if (pluginsDir.dirName() == QLatin1String("MacOS")) {
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            pluginsDir.cdUp();
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            pluginsDir.cdUp();
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            pluginsDir.cdUp();
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        }
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#endif
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        QString subdir(QLatin1String("plugins/"));
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        subdir += plugintype;
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        if (pluginsDir.path().endsWith(QLatin1String("/plugins"))
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            || pluginsDir.path().endsWith(QLatin1String("/plugins/")))
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            subdir = plugintype;
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        if (checkMobilityPluginsDir(QDir(pluginsDir.path() + QLatin1Char('/') + subdir))) {
0
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            pluginsDir.cd(subdir);
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            QStringList files = pluginsDir.entryList(QDir::Files);
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#if !defined QT_NO_DEBUG
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            if (showDebug)
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                qDebug() << "Looking for " << plugintype << " plugins in" << pluginsDir.path() << files;
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#endif
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            for (int j=0; j < files.count(); j++) {
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                plugins <<  pluginsDir.absoluteFilePath(files.at(j));
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            }
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        }
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    }
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    return  plugins;
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}
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QTM_END_NAMESPACE
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#endif