static QEglContext *createContext(QPaintDevice *device)
{
    QEglContext *context;

    // Create the context object and open the display.
    context = new QEglContext();
    context->setApi(QEgl::OpenVG);

    // Set the swap interval for the display.
    QByteArray interval = qgetenv("QT_VG_SWAP_INTERVAL");
    if (!interval.isEmpty())
        eglSwapInterval(QEgl::display(), interval.toInt());
    else
        eglSwapInterval(QEgl::display(), 1);

#ifdef EGL_RENDERABLE_TYPE
    // Has the user specified an explicit EGL configuration to use?
    QByteArray configId = qgetenv("QT_VG_EGL_CONFIG");
    if (!configId.isEmpty()) {
        EGLint cfgId = configId.toInt();
        EGLint properties[] = {
            EGL_CONFIG_ID, cfgId,
            EGL_NONE
        };
        EGLint matching = 0;
        EGLConfig cfg;
        if (eglChooseConfig
                    (QEgl::display(), properties, &cfg, 1, &matching) &&
                matching > 0) {
            // Check that the selected configuration actually supports OpenVG
            // and then create the context with it.
            EGLint id = 0;
            EGLint type = 0;
            eglGetConfigAttrib
                (QEgl::display(), cfg, EGL_CONFIG_ID, &id);
            eglGetConfigAttrib
                (QEgl::display(), cfg, EGL_RENDERABLE_TYPE, &type);
            if (cfgId == id && (type & EGL_OPENVG_BIT) != 0) {
                context->setConfig(cfg);
                if (!context->createContext()) {
                    delete context;
                    return 0;
                }
                return context;
            } else {
                qWarning("QT_VG_EGL_CONFIG: %d is not a valid OpenVG configuration", int(cfgId));
            }
        }
    }
#endif

    // Choose an appropriate configuration for rendering into the device.
    QEglProperties configProps;
    configProps.setPaintDeviceFormat(device);
    int redSize = configProps.value(EGL_RED_SIZE);
    if (redSize == EGL_DONT_CARE || redSize == 0)
        configProps.setPixelFormat(QImage::Format_ARGB32);  // XXX
    configProps.setValue(EGL_ALPHA_MASK_SIZE, 1);
#ifdef EGL_VG_ALPHA_FORMAT_PRE_BIT
    configProps.setValue(EGL_SURFACE_TYPE, EGL_WINDOW_BIT |
                         EGL_VG_ALPHA_FORMAT_PRE_BIT);
    configProps.setRenderableType(QEgl::OpenVG);
    if (!context->chooseConfig(configProps)) {
        // Try again without the "pre" bit.
        configProps.setValue(EGL_SURFACE_TYPE, EGL_WINDOW_BIT);
        if (!context->chooseConfig(configProps)) {
            delete context;
            return 0;
        }
    }
#else
    configProps.setValue(EGL_SURFACE_TYPE, EGL_WINDOW_BIT);
    configProps.setRenderableType(QEgl::OpenVG);
    if (!context->chooseConfig(configProps)) {
        delete context;
        return 0;
    }
#endif

    // Construct a new EGL context for the selected configuration.
    if (!context->createContext()) {
        delete context;
        return 0;
    }

    return context;
}

void QRasterWindowSurface::flush(QWidget *widget, const QRegion &rgn, const QPoint &offset)
{
    Q_D(QRasterWindowSurface);

    // Not ready for painting yet, bail out. This can happen in
    // QWidget::create_sys()
    if (!d->image || rgn.rectCount() == 0)
        return;

#ifdef Q_WS_WIN
    QRect br = rgn.boundingRect();

#ifndef Q_WS_WINCE
    if (!qt_widget_private(window())->isOpaque
        && window()->testAttribute(Qt::WA_TranslucentBackground)
        && (qt_widget_private(window())->data.window_flags & Qt::FramelessWindowHint))
    {
        QRect r = window()->frameGeometry();
        QPoint frameOffset = qt_widget_private(window())->frameStrut().topLeft();
        QRect dirtyRect = br.translated(offset + frameOffset);

        SIZE size = {r.width(), r.height()};
        POINT ptDst = {r.x(), r.y()};
        POINT ptSrc = {0, 0};
        BLENDFUNCTION blend = {AC_SRC_OVER, 0, (int)(255.0 * window()->windowOpacity()), Q_AC_SRC_ALPHA};
        RECT dirty = {dirtyRect.x(), dirtyRect.y(),
            dirtyRect.x() + dirtyRect.width(), dirtyRect.y() + dirtyRect.height()};
        Q_UPDATELAYEREDWINDOWINFO info = {sizeof(info), NULL, &ptDst, &size, d->image->hdc, &ptSrc, 0, &blend, Q_ULW_ALPHA, &dirty};
        ptrUpdateLayeredWindowIndirect(window()->internalWinId(), &info);
    } else
#endif
    {
        QPoint wOffset = qt_qwidget_data(widget)->wrect.topLeft();

        HDC widget_dc = widget->getDC();

        QRect wbr = br.translated(-wOffset);
        BitBlt(widget_dc, wbr.x(), wbr.y(), wbr.width(), wbr.height(),
               d->image->hdc, br.x() + offset.x(), br.y() + offset.y(), SRCCOPY);
        widget->releaseDC(widget_dc);
    }

#ifndef QT_NO_DEBUG
    static bool flush = !qgetenv("QT_FLUSH_WINDOWSURFACE").isEmpty();
    if (flush) {
        SelectObject(qt_win_display_dc(), GetStockObject(BLACK_BRUSH));
        Rectangle(qt_win_display_dc(), 0, 0, d->image->width() + 2, d->image->height() + 2);
        BitBlt(qt_win_display_dc(), 1, 1, d->image->width(), d->image->height(),
               d->image->hdc, 0, 0, SRCCOPY);
    }
#endif

#endif

#ifdef Q_WS_X11
    extern void *qt_getClipRects(const QRegion &r, int &num); // in qpaintengine_x11.cpp
    extern QWidgetData* qt_widget_data(QWidget *);
    QPoint wOffset = qt_qwidget_data(widget)->wrect.topLeft();

    if (widget->window() != window()) {
        XFreeGC(X11->display, d_ptr->gc);
        d_ptr->gc = XCreateGC(X11->display, widget->handle(), 0, 0);
    }

    QRegion wrgn(rgn);
    if (!wOffset.isNull())
        wrgn.translate(-wOffset);
    QRect wbr = wrgn.boundingRect();

    if (wrgn.rectCount() != 1) {
        int num;
        XRectangle *rects = (XRectangle *)qt_getClipRects(wrgn, num);
        XSetClipRectangles(X11->display, d_ptr->gc, 0, 0, rects, num, YXBanded);
    }

    QRect br = rgn.boundingRect().translated(offset);
#ifndef QT_NO_MITSHM
    if (d_ptr->image->xshmpm) {
        XCopyArea(X11->display, d_ptr->image->xshmpm, widget->handle(), d_ptr->gc,
                  br.x(), br.y(), br.width(), br.height(), wbr.x(), wbr.y());
        XSync(X11->display, False);
    } else if (d_ptr->image->xshmimg) {
        const QImage &src = d->image->image;
        br = br.intersected(src.rect());
        XShmPutImage(X11->display, widget->handle(), d_ptr->gc, d_ptr->image->xshmimg,
                     br.x(), br.y(), wbr.x(), wbr.y(), br.width(), br.height(), False);
        XSync(X11->display, False);
    } else
#endif
    {
        const QImage &src = d->image->image;
        br = br.intersected(src.rect());
        if (src.format() != QImage::Format_RGB32 || widget->x11Info().depth() < 24) {
            Q_ASSERT(src.depth() >= 16);
            const QImage sub_src(src.scanLine(br.y()) + br.x() * (uint(src.depth()) / 8),
                                 br.width(), br.height(), src.bytesPerLine(), src.format());
            QX11PixmapData *data = new QX11PixmapData(QPixmapData::PixmapType);
            data->xinfo = widget->x11Info();
            data->fromImage(sub_src, Qt::NoOpaqueDetection);
            QPixmap pm = QPixmap(data);
//.........这里部分代码省略.........

//.........这里部分代码省略.........
    // Make sure window is above navigator but below keyboard if running as root
    // since navigator won't automatically set our z-order in this case
    if (getuid() == 0) {
        errno = 0;
        val[0] = MAGIC_ZORDER_FOR_NO_NAV;
        result = screen_set_window_property_iv(m_window, SCREEN_PROPERTY_ZORDER, val);
        if (result != 0)
            qFatal("QQnxRootWindow: failed to set window z-order, errno=%d", errno);
    }

    // Window won't be visible unless it has some buffers so make one dummy buffer that is 1x1
    errno = 0;
    val[0] = SCREEN_USAGE_NATIVE;
    result = screen_set_window_property_iv(m_window, SCREEN_PROPERTY_USAGE, val);
    if (result != 0)
        qFatal("QQnxRootWindow: failed to set window buffer usage, errno=%d", errno);

    errno = 0;
    val[0] = m_screen->nativeFormat();
    result = screen_set_window_property_iv(m_window, SCREEN_PROPERTY_FORMAT, val);
    if (result != 0)
        qFatal("QQnxRootWindow: failed to set window pixel format, errno=%d", errno);

    errno = 0;
    val[0] = 1;
    val[1] = 1;
    result = screen_set_window_property_iv(m_window, SCREEN_PROPERTY_BUFFER_SIZE, val);
    if (result != 0)
        qFatal("QQnxRootWindow: failed to set window buffer size, errno=%d", errno);

    errno = 0;
    result = screen_create_window_buffers(m_window, 1);
    if (result != 0)
        qFatal("QQNX: failed to create window buffer, errno=%d", errno);

    // Window is always the size of the display
    errno = 0;
    QRect geometry = m_screen->geometry();
    val[0] = geometry.width();
    val[1] = geometry.height();
    result = screen_set_window_property_iv(m_window, SCREEN_PROPERTY_SIZE, val);
    if (result != 0)
        qFatal("QQnxRootWindow: failed to set window size, errno=%d", errno);

    // Fill the window with solid black. Note that the LSB of the pixel value
    // 0x00000000 just happens to be 0x00, so if and when this root window's
    // alpha blending mode is changed from None to Source-Over, it will then
    // be interpreted as transparent.
    errno = 0;
    val[0] = 0;
    result = screen_set_window_property_iv(m_window, SCREEN_PROPERTY_COLOR, val);
    if (result != 0)
        qFatal("QQnxRootWindow: failed to set window colour, errno=%d", errno);

    // Make the window opaque
    errno = 0;
    val[0] = SCREEN_TRANSPARENCY_NONE;
    result = screen_set_window_property_iv(m_window, SCREEN_PROPERTY_TRANSPARENCY, val);
    if (result != 0)
        qFatal("QQnxRootWindow: failed to set window transparency, errno=%d", errno);

    // Set the swap interval to 1
    errno = 0;
    val[0] = 1;
    result = screen_set_window_property_iv(m_window, SCREEN_PROPERTY_SWAP_INTERVAL, val);
    if (result != 0)
        qFatal("QQnxRootWindow: failed to set window swap interval, errno=%d", errno);

    // Set viewport size equal to window size but move outside buffer so the fill colour is used exclusively
    errno = 0;
    val[0] = geometry.width();
    val[1] = geometry.height();
    result = screen_set_window_property_iv(m_window, SCREEN_PROPERTY_SOURCE_SIZE, val);
    if (result != 0)
        qFatal("QQnxRootWindow: failed to set window source size, errno=%d", errno);

    errno = 0;
    val[0] = 0;
    val[1] = 0;
    result = screen_set_window_property_iv(m_window, SCREEN_PROPERTY_SOURCE_POSITION, val);
    if (result != 0)
        qFatal("QQnxRootWindow: failed to set window source position, errno=%d", errno);

    // Optionally disable the screen power save
    bool ok = false;
    const int disablePowerSave = qgetenv("QQNX_DISABLE_POWER_SAVE").toInt(&ok);
    if (ok && disablePowerSave) {
        const int mode = SCREEN_IDLE_MODE_KEEP_AWAKE;
        result = screen_set_window_property_iv(m_window, SCREEN_PROPERTY_IDLE_MODE, &mode);
        if (result != 0)
            qWarning("QQnxRootWindow: failed to disable power saving mode");
    }

    createWindowGroup();

    // Don't post yet. This will be lazily done from QQnxScreen upon first posting of
    // a child window. Doing it now pre-emptively would create a flicker if one of
    // the QWindow's about to be created sets its Qt::WA_TranslucentBackground flag
    // and immediately triggers the buffer re-creation in makeTranslucent().
}

bool Options::showDisassembly()
{
    static bool showCode = !qgetenv("QV4_SHOW_ASM").isNull();
    return showCode;
}

static QString cartaGetEnv( const QString & name)
{
    std::string fullName = ("CARTAVIS_" + name).toStdString();
    return qgetenv( fullName.c_str());
}

Vector<String> PluginDatabase::defaultPluginDirectories()
{
    Vector<String> paths;

    // Add paths specific to each platform
#if defined(XP_UNIX)
    String userPluginPath = homeDirectoryPath();
    userPluginPath.append(String("/.mozilla/plugins"));
    paths.append(userPluginPath);

    userPluginPath = homeDirectoryPath();
    userPluginPath.append(String("/.netscape/plugins"));
    paths.append(userPluginPath);

    paths.append("/usr/lib/browser/plugins");
    paths.append("/usr/local/lib/mozilla/plugins");
    paths.append("/usr/lib/firefox/plugins");
    paths.append("/usr/lib64/browser-plugins");
    paths.append("/usr/lib/browser-plugins");
    paths.append("/usr/lib/mozilla/plugins");
    paths.append("/usr/local/netscape/plugins");
    paths.append("/opt/mozilla/plugins");
    paths.append("/opt/mozilla/lib/plugins");
    paths.append("/opt/netscape/plugins");
    paths.append("/opt/netscape/communicator/plugins");
    paths.append("/usr/lib/netscape/plugins");
    paths.append("/usr/lib/netscape/plugins-libc5");
    paths.append("/usr/lib/netscape/plugins-libc6");
    paths.append("/usr/lib64/netscape/plugins");
    paths.append("/usr/lib64/mozilla/plugins");
    paths.append("/usr/lib/nsbrowser/plugins");
    paths.append("/usr/lib64/nsbrowser/plugins");

    String mozHome(getenv("MOZILLA_HOME"));
    mozHome.append("/plugins");
    paths.append(mozHome);

    Vector<String> mozPaths;
    String mozPath(getenv("MOZ_PLUGIN_PATH"));
    mozPath.split(UChar(':'), /* allowEmptyEntries */ false, mozPaths);
    paths.append(mozPaths);
#elif defined(XP_MACOSX)
    String userPluginPath = homeDirectoryPath();
    userPluginPath.append(String("/Library/Internet Plug-Ins"));
    paths.append(userPluginPath);
    paths.append("/Library/Internet Plug-Ins");
#elif defined(XP_WIN)
    String userPluginPath = homeDirectoryPath();
    userPluginPath.append(String("\\Application Data\\Mozilla\\plugins"));
    paths.append(userPluginPath);
#endif

    // Add paths specific to each port
#if PLATFORM(QT)
    Vector<String> qtPaths;
    String qtPath(qgetenv("QTWEBKIT_PLUGIN_PATH").constData());
    qtPath.split(UChar(':'), /* allowEmptyEntries */ false, qtPaths);
    paths.append(qtPaths);
#endif

    return paths;
}

PlayEngine::PlayEngine()
: d(new Data(this)) {
    Q_ASSERT(d->confDir.isValid());

    _Debug("Create audio/video plugins");
    d->audio = new AudioController(this);
    d->video = new VideoOutput(this);
    d->filter = new VideoFilter;

    d->chapterInfo = new ChapterInfoObject(this, this);
    d->updateMediaName();

    _Debug("Make registrations and connections");

    connect(d->video, &VideoOutput::formatChanged,
            this, &PlayEngine::updateVideoFormat);
    connect(d->video, &VideoOutput::droppedFramesChanged,
            this, &PlayEngine::droppedFramesChanged);

    d->handle = mpv_create();
    auto verbose = qgetenv("CMPLAYER_MPV_VERBOSE").toLower().trimmed();
    const QVector<QByteArray> lvs = {"no", "fatal", "error", "warn", "info",
                                     "status", "v", "debug", "trace"};
    if (lvs.indexOf(verbose) < lvs.indexOf("info"))
        verbose = "info";
    mpv_request_log_messages(d->handle, verbose.constData());

    d->observe();
    connect(this, &PlayEngine::beginChanged, this, &PlayEngine::endChanged);
    connect(this, &PlayEngine::durationChanged, this, &PlayEngine::endChanged);
    connect(this, &PlayEngine::videoStreamsChanged, this, [=] () {
        if (_Change(d->hasVideo, !d->streams[StreamVideo].tracks.isEmpty()))
            emit hasVideoChanged();
        d->videoInfo.setTracks(d->streams[StreamVideo].tracks);
    });
    connect(this, &PlayEngine::audioStreamsChanged, this, [=] ()
        { d->audioInfo.setTracks(d->streams[StreamAudio].tracks); });
    connect(this, &PlayEngine::subtitleStreamsChanged, this, [=] ()
        { d->subInfo.setTracks(d->streams[StreamSubtitle].tracks); });
    connect(this, &PlayEngine::currentVideoStreamChanged, this, [=] (int id)
        { d->videoInfo.setTrack(d->streams[StreamVideo].tracks.value(id)); });
    connect(this, &PlayEngine::currentAudioStreamChanged, this, [=] (int id)
        { d->audioInfo.setTrack(d->streams[StreamAudio].tracks.value(id)); });
    connect(this, &PlayEngine::currentSubtitleStreamChanged, this, [=] ()
        { d->subInfo.setTracks(d->streams[StreamSubtitle].tracks); });
    auto checkDeint = [=] () {
        auto act = Unavailable;
        if (d->filter->isInputInterlaced())
            act = d->filter->isOutputInterlaced() ? Deactivated : Activated;
        d->videoInfo.setDeinterlacer(act);
    };
    connect(d->filter, &VideoFilter::inputInterlacedChanged,
            this, checkDeint, Qt::QueuedConnection);
    connect(d->filter, &VideoFilter::outputInterlacedChanged,
            this, checkDeint, Qt::QueuedConnection);
    connect(d->audio, &AudioController::inputFormatChanged, this, [=] () {
        d->audioInfo.output()->setFormat(d->audio->inputFormat());
    }, Qt::QueuedConnection);
    connect(d->audio, &AudioController::outputFormatChanged, this, [=] () {
        d->audioInfo.renderer()->setFormat(d->audio->outputFormat());
    }, Qt::QueuedConnection);
    connect(d->audio, &AudioController::samplerateChanged, this, [=] (int sr) {
        d->audioInfo.renderer()->setSampleRate(sr, true);
    }, Qt::QueuedConnection);
    connect(d->audio, &AudioController::gainChanged,
            &d->audioInfo, &AudioInfoObject::setNormalizer);
    auto setOption = [this] (const char *name, const char *data) {
        const auto err = mpv_set_option_string(d->handle, name, data);
        d->fatal(err, "Couldn't set option %%=%%.", name, data);
    };
    setOption("fs", "no");
    setOption("input-cursor", "yes");
    setOption("softvol", "yes");
    setOption("softvol-max", "1000.0");
    setOption("sub-auto", "no");
    setOption("osd-level", "0");
    setOption("quiet", "yes");
    setOption("input-terminal", "no");
    setOption("ad-lavc-downmix", "no");
    setOption("title", "\"\"");
    setOption("vo", d->vo().constData());
    setOption("fixed-vo", "yes");

    auto overrides = qgetenv("CMPLAYER_MPV_OPTIONS").trimmed();
    if (!overrides.isEmpty()) {
        const auto opts = QString::fromLocal8Bit(overrides);
        const auto args = opts.split(QRegEx(uR"([\s\t]+)"_q),
                                     QString::SkipEmptyParts);
        for (int i=0; i<args.size(); ++i) {
            if (!args[i].startsWith("--"_a)) {
                _Error("Cannot parse option %%.", args[i]);
                continue;
            }
            const auto arg = args[i].midRef(2);
            const int index = arg.indexOf('='_q);
            if (index < 0) {
                if (arg.startsWith("no-"_a))
                    setOption(arg.mid(3).toLatin1(), "no");
                else
                    setOption(arg.toLatin1(), "yes");
//.........这里部分代码省略.........

void SyncEngine::slotDiscoveryJobFinished(int discoveryResult)
{
    // To clean the progress info
    emit folderDiscovered(false, QString());

    if (discoveryResult < 0 ) {
        handleSyncError(_csync_ctx, "csync_update");
        return;
    }
    qDebug() << "<<#### Discovery end #################################################### " << _stopWatch.addLapTime(QLatin1String("Discovery Finished"));

    // Sanity check
    if (!_journal->isConnected()) {
        qDebug() << "Bailing out, DB failure";
        emit csyncError(tr("Cannot open the sync journal"));
        finalize();
        return;
    } else {
        // Commits a possibly existing (should not though) transaction and starts a new one for the propagate phase
        _journal->commitIfNeededAndStartNewTransaction("Post discovery");
    }

    if( csync_reconcile(_csync_ctx) < 0 ) {
        handleSyncError(_csync_ctx, "csync_reconcile");
        return;
    }

    qDebug() << "<<#### Reconcile end #################################################### " << _stopWatch.addLapTime(QLatin1String("Reconcile Finished"));

    _hasNoneFiles = false;
    _hasRemoveFile = false;
    bool walkOk = true;
    _seenFiles.clear();
    _temporarilyUnavailablePaths.clear();

    if( csync_walk_local_tree(_csync_ctx, &treewalkLocal, 0) < 0 ) {
        qDebug() << "Error in local treewalk.";
        walkOk = false;
    }
    if( walkOk && csync_walk_remote_tree(_csync_ctx, &treewalkRemote, 0) < 0 ) {
        qDebug() << "Error in remote treewalk.";
    }

    if (_csync_ctx->remote.root_perms) {
        _remotePerms[QLatin1String("")] = _csync_ctx->remote.root_perms;
        qDebug() << "Permissions of the root folder: " << _remotePerms[QLatin1String("")];
    }

    // Re-init the csync context to free memory
    csync_commit(_csync_ctx);

    // The map was used for merging trees, convert it to a list:
    _syncedItems = _syncItemMap.values().toVector();
    _syncItemMap.clear(); // free memory

    // Adjust the paths for the renames.
    for (SyncFileItemVector::iterator it = _syncedItems.begin();
            it != _syncedItems.end(); ++it) {
        (*it)->_file = adjustRenamedPath((*it)->_file);
    }

    // Sort items per destination
    std::sort(_syncedItems.begin(), _syncedItems.end());

    // make sure everything is allowed
    checkForPermission();

    // To announce the beginning of the sync
    emit aboutToPropagate(_syncedItems);
    // it's important to do this before ProgressInfo::start(), to announce start of new sync
    emit transmissionProgress(*_progressInfo);
    _progressInfo->start();

    if (!_hasNoneFiles && _hasRemoveFile) {
        qDebug() << Q_FUNC_INFO << "All the files are going to be changed, asking the user";
        bool cancel = false;
        emit aboutToRemoveAllFiles(_syncedItems.first()->_direction, &cancel);
        if (cancel) {
            qDebug() << Q_FUNC_INFO << "Abort sync";
            finalize();
            return;
        }
    }

    // FIXME: The propagator could create his session in propagator_legacy.cpp
    // There's no reason to keep csync_owncloud.c around
    ne_session_s *session = 0;
    // that call to set property actually is a get which will return the session
    csync_set_module_property(_csync_ctx, "get_dav_session", &session);

    // post update phase script: allow to tweak stuff by a custom script in debug mode.
    if( !qgetenv("OWNCLOUD_POST_UPDATE_SCRIPT").isEmpty() ) {
#ifndef NDEBUG
        QString script = qgetenv("OWNCLOUD_POST_UPDATE_SCRIPT");

        qDebug() << "OOO => Post Update Script: " << script;
        QProcess::execute(script.toUtf8());
#else
    qWarning() << "**** Attention: POST_UPDATE_SCRIPT installed, but not executed because compiled with NDEBUG";
#endif
//.........这里部分代码省略.........

void PropagateUploadFileQNAM::startNextChunk()
{
    if (_propagator->_abortRequested.fetchAndAddRelaxed(0))
        return;

    if (! _jobs.isEmpty() &&  _currentChunk + _startChunk >= _chunkCount - 1) {
        // Don't do parallel upload of chunk if this might be the last chunk because the server cannot handle that
        // https://github.com/owncloud/core/issues/11106
        // We return now and when the _jobs will be finished we will proceed the last chunk
        return;
    }
    quint64 fileSize = _item._size;
    QMap<QByteArray, QByteArray> headers;
    headers["OC-Total-Length"] = QByteArray::number(fileSize);
    headers["OC-Async"] = "1";
    headers["Content-Type"] = "application/octet-stream";
    headers["X-OC-Mtime"] = QByteArray::number(qint64(_item._modtime));
    if (!_item._etag.isEmpty() && _item._etag != "empty_etag" &&
            _item._instruction != CSYNC_INSTRUCTION_NEW  // On new files never send a If-Match
            ) {
        // We add quotes because the owncloud server always add quotes around the etag, and
        //  csync_owncloud.c's owncloud_file_id always strip the quotes.
        headers["If-Match"] = '"' + _item._etag + '"';
    }

    QString path = _item._file;
    UploadDevice *device = 0;
    if (_chunkCount > 1) {
        int sendingChunk = (_currentChunk + _startChunk) % _chunkCount;
        // XOR with chunk size to make sure everything goes well if chunk size change between runs
        uint transid = _transferId ^ chunkSize();
        path +=  QString("-chunking-%1-%2-%3").arg(transid).arg(_chunkCount).arg(sendingChunk);
        headers["OC-Chunked"] = "1";
        int currentChunkSize = chunkSize();
        if (sendingChunk == _chunkCount - 1) { // last chunk
            currentChunkSize = (fileSize % chunkSize());
            if( currentChunkSize == 0 ) { // if the last chunk pretents to be 0, its actually the full chunk size.
                currentChunkSize = chunkSize();
            }
        }
        device = new UploadDevice(_file, chunkSize() * quint64(sendingChunk), currentChunkSize, &_propagator->_bandwidthManager);
    } else {
        device = new UploadDevice(_file, 0, fileSize, &_propagator->_bandwidthManager);
    }

    bool isOpen = true;
    if (!device->isOpen()) {
        isOpen = device->open(QIODevice::ReadOnly);
    }

    if( isOpen ) {
        PUTFileJob* job = new PUTFileJob(AccountManager::instance()->account(), _propagator->_remoteFolder + path, device, headers, _currentChunk);
        _jobs.append(job);
        job->setTimeout(_propagator->httpTimeout() * 1000);
        connect(job, SIGNAL(finishedSignal()), this, SLOT(slotPutFinished()));
        connect(job, SIGNAL(uploadProgress(qint64,qint64)), this, SLOT(slotUploadProgress(qint64,qint64)));
        connect(job, SIGNAL(uploadProgress(qint64,qint64)), device, SLOT(slotJobUploadProgress(qint64,qint64)));
        connect(job, SIGNAL(destroyed(QObject*)), this, SLOT(slotJobDestroyed(QObject*)));
        job->start();
        _propagator->_activeJobs++;
        _currentChunk++;

        QByteArray env = qgetenv("OWNCLOUD_PARALLEL_CHUNK");
        bool parallelChunkUpload = env=="true" || env =="1";;
        if (_currentChunk + _startChunk >= _chunkCount - 1) {
            // Don't do parallel upload of chunk if this might be the last chunk because the server cannot handle that
            // https://github.com/owncloud/core/issues/11106
            parallelChunkUpload = false;
        }

        if (parallelChunkUpload && (_propagator->_activeJobs < _propagator->maximumActiveJob())
                && _currentChunk < _chunkCount ) {
            startNextChunk();
        }
        if (!parallelChunkUpload || _chunkCount - _currentChunk <= 0) {
            emitReady();
        }
    } else {

//!---------------------------------------------------------------------------------------------------------
//!
//! \brief get_username
//! \return
//!
QString SystemDispatcher::get_username(){
    QString name = qgetenv("USER");
        if (name.isEmpty())
            name = qgetenv("USERNAME");
    return name;
}

QStringList QStandardPaths::standardLocations(StandardLocation type)
{
    if (type == MusicLocation) {
        return QStringList() << writableLocation(type)
               << getExternalFilesDir("DIRECTORY_MUSIC")
               << getExternalStoragePublicDirectory("DIRECTORY_PODCASTS")
               << getExternalFilesDir("DIRECTORY_PODCASTS")
               << getExternalStoragePublicDirectory("DIRECTORY_NOTIFICATIONS")
               << getExternalFilesDir("DIRECTORY_NOTIFICATIONS")
               << getExternalStoragePublicDirectory("DIRECTORY_ALARMS")
               << getExternalFilesDir("DIRECTORY_ALARMS");
    }

    if (type == MoviesLocation) {
        return QStringList() << writableLocation(type)
               << getExternalFilesDir("DIRECTORY_MOVIES");
    }

    if (type == PicturesLocation) {
        return QStringList()  << writableLocation(type)
               << getExternalFilesDir("DIRECTORY_PICTURES");
    }

    if (type == DocumentsLocation) {
        if (QtAndroidPrivate::androidSdkVersion() > 18) {
            return QStringList() << writableLocation(type)
                   << getExternalFilesDir("DIRECTORY_DOCUMENTS");
        } else {
            return QStringList() << writableLocation(type)
                   << getExternalFilesDir() + QLatin1String("/Documents");
        }
    }

    if (type == DownloadLocation) {
        return QStringList() << writableLocation(type)
               << getExternalFilesDir("DIRECTORY_DOWNLOADS");
    }

    if (type == AppDataLocation || type == AppLocalDataLocation) {
        return QStringList() << writableLocation(type)
               << getExternalFilesDir();
    }

    if (type == CacheLocation) {
        return QStringList() << writableLocation(type)
               << getExternalCacheDir();
    }

    if (type == FontsLocation) {
        QString &fontLocation = (*androidDirCache)[QStringLiteral("FONT_LOCATION")];
        if (!fontLocation.isEmpty())
            return QStringList(fontLocation);

        const QByteArray ba = qgetenv("QT_ANDROID_FONT_LOCATION");
        if (!ba.isEmpty())
            return QStringList((fontLocation = QDir::cleanPath(QString::fromLocal8Bit(ba))));

        return QStringList((fontLocation = QLatin1String("/system/fonts")));
    }

    return QStringList(writableLocation(type));
}

//.........这里部分代码省略.........
        qDebug("No shmrgn %ld", (long)d_ptr->shmrgn);
        return false;
    }

    d_ptr->hdr = (QVFbHeader *)d_ptr->shmrgn;
    data = d_ptr->shmrgn + d_ptr->hdr->dataoffset;

    dw = w = d_ptr->hdr->width;
    dh = h = d_ptr->hdr->height;
    d = d_ptr->hdr->depth;

    switch (d) {
    case 1:
        setPixelFormat(QImage::Format_Mono);
        break;
    case 8:
        setPixelFormat(QImage::Format_Indexed8);
        break;
    case 12:
        setPixelFormat(QImage::Format_RGB444);
        break;
    case 15:
        setPixelFormat(QImage::Format_RGB555);
        break;
    case 16:
        setPixelFormat(QImage::Format_RGB16);
        break;
    case 18:
        setPixelFormat(QImage::Format_RGB666);
        break;
    case 24:
        setPixelFormat(QImage::Format_RGB888);
        break;
    case 32:
        setPixelFormat(QImage::Format_ARGB32_Premultiplied);
        break;
    }

    lstep = d_ptr->hdr->linestep;

    // Handle display physical size spec.
    int dimIdxW = -1;
    int dimIdxH = -1;
    for (int i = 0; i < displayArgs.size(); ++i) {
        if (displayArgs.at(i).startsWith(QLatin1String("mmWidth"))) {
            dimIdxW = i;
            break;
        }
    }
    for (int i = 0; i < displayArgs.size(); ++i) {
        if (displayArgs.at(i).startsWith(QLatin1String("mmHeight"))) {
            dimIdxH = i;
            break;
        }
    }
    if (dimIdxW >= 0) {
        bool ok;
        int pos = 7;
        if (displayArgs.at(dimIdxW).at(pos) == QLatin1Char('='))
            ++pos;
        int pw = displayArgs.at(dimIdxW).mid(pos).toInt(&ok);
        if (ok) {
            physWidth = pw;
            if (dimIdxH < 0)
                physHeight = dh*physWidth/dw;
        }
    }
    if (dimIdxH >= 0) {
        bool ok;
        int pos = 8;
        if (displayArgs.at(dimIdxH).at(pos) == QLatin1Char('='))
            ++pos;
        int ph = displayArgs.at(dimIdxH).mid(pos).toInt(&ok);
        if (ok) {
            physHeight = ph;
            if (dimIdxW < 0)
                physWidth = dw*physHeight/dh;
        }
    }
    if (dimIdxW < 0 && dimIdxH < 0) {
        const int dpi = 72;
        physWidth = qRound(dw * 25.4 / dpi);
        physHeight = qRound(dh * 25.4 / dpi);
    }

    qDebug("Connected to VFB server %s: %d x %d x %d %dx%dmm (%dx%ddpi)", displaySpec.toLatin1().data(),
        w, h, d, physWidth, physHeight, qRound(dw*25.4/physWidth), qRound(dh*25.4/physHeight) );

    size = lstep * h;
    mapsize = size;
    screencols = d_ptr->hdr->numcols;
    memcpy(screenclut, d_ptr->hdr->clut, sizeof(QRgb) * screencols);

    connected = this;

    if (qgetenv("QT_QVFB_BGR").toInt())
        pixeltype = BGRPixel;

    return true;
}

void AndroidAssetsFileEngineHandler::prepopulateCache() const
{
    Q_ASSERT(!m_hasTriedPrepopulatingCache);
    m_hasTriedPrepopulatingCache = true;

    Q_ASSERT(m_assetsCache.isEmpty());

    // Failsafe: Don't read cache files that are larger than 1MB
    static qint64 maxPrepopulatedCacheSize = qMax(1024LL * 1024LL,
                                                  qgetenv("QT_ANDROID_MAX_PREPOPULATED_ASSETS_CACHE_SIZE").toLongLong());

    const char *fileName = "--Added-by-androiddeployqt--/qt_cache_pregenerated_file_list";
    AAsset *asset = AAssetManager_open(m_assetManager, fileName, AASSET_MODE_BUFFER);
    if (asset) {
        m_hasPrepopulatedCache = true;
        AndroidAbstractFileEngine fileEngine(asset, QString::fromLatin1(fileName));
        if (fileEngine.open(QIODevice::ReadOnly)) {
            qint64 size = fileEngine.size();

            if (size <= maxPrepopulatedCacheSize) {
                QByteArray bytes(size, Qt::Uninitialized);
                qint64 read = fileEngine.read(bytes.data(), size);
                if (read != size) {
                    qWarning("Failed to read prepopulated cache");
                    return;
                }

                QDataStream stream(&bytes, QIODevice::ReadOnly);
                stream.setVersion(QDataStream::Qt_5_3);
                if (stream.status() != QDataStream::Ok) {
                    qWarning("Failed to read prepopulated cache");
                    return;
                }

                while (!stream.atEnd()) {
                    QString directoryName;
                    stream >> directoryName;

                    int fileCount;
                    stream >> fileCount;

                    QVector<QString> fileList;
                    fileList.reserve(fileCount);
                    while (fileCount--) {
                        QString fileName;
                        stream >> fileName;
                        fileList.append(fileName);
                    }

                    QSharedPointer<AndroidAssetDir> *aad = new QSharedPointer<AndroidAssetDir>(new AndroidAssetDir(0));
                    (*aad)->m_items = fileList;

                    // Cost = 0, because we should always cache everything if there's a prepopulated cache
                    QByteArray key = directoryName != QLatin1String("/")
                            ? QByteArray("assets:/") + directoryName.toUtf8()
                            : QByteArray("assets:");

                    bool ok = m_assetsCache.insert(key, aad, 0);
                    if (!ok)
                        qWarning("Failed to insert in cache: %s", qPrintable(directoryName));
                }
            } else {

QString QStandardPaths::writableLocation(StandardLocation type)
{
    switch (type) {
    case HomeLocation:
        return QDir::homePath();
    case TempLocation:
        return QDir::tempPath();
    case CacheLocation:
    case GenericCacheLocation:
    {
        // http://standards.freedesktop.org/basedir-spec/basedir-spec-0.6.html
        QString xdgCacheHome = QFile::decodeName(qgetenv("XDG_CACHE_HOME"));
        if (isTestModeEnabled())
            xdgCacheHome = QDir::homePath() + QLatin1String("/.qttest/cache");
        if (xdgCacheHome.isEmpty())
            xdgCacheHome = QDir::homePath() + QLatin1String("/.cache");
        if (type == QStandardPaths::CacheLocation)
            appendOrganizationAndApp(xdgCacheHome);
        return xdgCacheHome;
    }
    case DataLocation:
    case GenericDataLocation:
    {
        QString xdgDataHome = QFile::decodeName(qgetenv("XDG_DATA_HOME"));
        if (isTestModeEnabled())
            xdgDataHome = QDir::homePath() + QLatin1String("/.qttest/share");
        if (xdgDataHome.isEmpty())
            xdgDataHome = QDir::homePath() + QLatin1String("/.local/share");
        if (type == QStandardPaths::DataLocation)
            appendOrganizationAndApp(xdgDataHome);
        return xdgDataHome;
    }
    case ConfigLocation:
    {
        // http://standards.freedesktop.org/basedir-spec/latest/
        QString xdgConfigHome = QFile::decodeName(qgetenv("XDG_CONFIG_HOME"));
        if (isTestModeEnabled())
            xdgConfigHome = QDir::homePath() + QLatin1String("/.qttest/config");
        if (xdgConfigHome.isEmpty())
            xdgConfigHome = QDir::homePath() + QLatin1String("/.config");
        return xdgConfigHome;
    }
    case RuntimeLocation:
    {
        const uid_t myUid = geteuid();
        // http://standards.freedesktop.org/basedir-spec/latest/
        QString xdgRuntimeDir = QFile::decodeName(qgetenv("XDG_RUNTIME_DIR"));
        if (xdgRuntimeDir.isEmpty()) {
            const QString userName = _resolveUserName(myUid);
            xdgRuntimeDir = QDir::tempPath() + QLatin1String("/runtime-") + userName;
            QDir dir(xdgRuntimeDir);
            if (!dir.exists()) {
                if (!QDir().mkdir(xdgRuntimeDir)) {
                    qWarning("QStandardPaths: error creating runtime directory %s: %s", qPrintable(xdgRuntimeDir), qPrintable(qt_error_string(errno)));
                    return QString();
                }
            }
        }
        // "The directory MUST be owned by the user"
        QFileInfo fileInfo(xdgRuntimeDir);
        if (fileInfo.ownerId() != myUid) {
            qWarning("QStandardPaths: wrong ownership on runtime directory %s, %d instead of %d", qPrintable(xdgRuntimeDir),
                     fileInfo.ownerId(), myUid);
            return QString();
        }
        // "and he MUST be the only one having read and write access to it. Its Unix access mode MUST be 0700."
        QFile file(xdgRuntimeDir);
        const QFile::Permissions wantedPerms = QFile::ReadUser | QFile::WriteUser | QFile::ExeUser;
        if (file.permissions() != wantedPerms && !file.setPermissions(wantedPerms)) {
            qWarning("QStandardPaths: wrong permissions on runtime directory %s", qPrintable(xdgRuntimeDir));
            return QString();
        }
        return xdgRuntimeDir;
    }
    default:
        break;
    }

    // http://www.freedesktop.org/wiki/Software/xdg-user-dirs
    QString xdgConfigHome = QFile::decodeName(qgetenv("XDG_CONFIG_HOME"));
    if (xdgConfigHome.isEmpty())
        xdgConfigHome = QDir::homePath() + QLatin1String("/.config");
    QFile file(xdgConfigHome + QLatin1String("/user-dirs.dirs"));
    if (!isTestModeEnabled() && file.open(QIODevice::ReadOnly)) {
        QHash<QString, QString> lines;
        QTextStream stream(&file);
        // Only look for lines like: XDG_DESKTOP_DIR="$HOME/Desktop"
        QRegExp exp(QLatin1String("^XDG_(.*)_DIR=(.*)$"));
        while (!stream.atEnd()) {
            const QString &line = stream.readLine();
            if (exp.indexIn(line) != -1) {
                const QStringList lst = exp.capturedTexts();
                const QString key = lst.at(1);
                QString value = lst.at(2);
                if (value.length() > 2
                    && value.startsWith(QLatin1Char('\"'))
                    && value.endsWith(QLatin1Char('\"')))
                    value = value.mid(1, value.length() - 2);
                // Store the key and value: "DESKTOP", "$HOME/Desktop"
                lines[key] = value;
//.........这里部分代码省略.........

int main(int argc, char *argv[])
{
    // Assume the xcb platform if the DISPLAY environment variable is defined,
    // otherwise go for kms
    if (!qgetenv("DISPLAY").isEmpty())
        setenv("QT_QPA_PLATFORM", "xcb", 0);
    else {
        setenv("QT_QPA_PLATFORM", "kms", 0);
        setenv("QT_QPA_GENERIC_PLUGINS", "evdevmouse,evdevkeyboard,evdevtouch", 0);
        setenv("QT_KMS_TTYKBD", "1", 0);
    }

    GreenIsland app(argc, argv);

    // Print the banner
    qDebug() << qPrintable(QString("Green Island v%1\n").arg(GREENISLAND_VERSION))
             << "              http://www.maui-project.org\n"
             << "              Bug reports to: https://github.com/hawaii-desktop/greenisland/issues\n"
             << qPrintable(QString("              Build: %1-%2")
                           .arg(GREENISLAND_VERSION).arg(GIT_REV));

    // Print the current system
    struct utsname uts;
    if (uname(&uts) != -1)
        qDebug() << qPrintable(QString("OS: %1, %2, %3, %4").arg(uts.sysname)
                               .arg(uts.release).arg(uts.version).arg(uts.machine));
    else
        qDebug() << "OS: Unknown";

    // Shell plugin (defaults to desktop for the moment)
    QString pluginName = QStringLiteral("desktop");

    // Command line arguments
    QStringList arguments