C++ (Cpp) QNetworkReply::atEnd示例

int Updater::checkManifest()
{
    QUrl baseUrl(MANIFEST_URL);
    QNetworkAccessManager manager;
    QNetworkRequest request = getNetworkRequest(baseUrl);
    QNetworkReply *rep = manager.get(request);

    while(rep->error() == QNetworkReply::NoError && !rep->isFinished())
        QCoreApplication::processEvents();

    while(true)
    {
        while(!rep->isFinished())
            QCoreApplication::processEvents();

        if(rep->error() != QNetworkReply::NoError)
            return RES_CHECK_FAILED;

        QVariant redirect = rep->attribute(QNetworkRequest::RedirectionTargetAttribute);
        if(redirect.type() != QVariant::Url)
            break;

        // redirect
        baseUrl = baseUrl.resolved(redirect.toUrl());
        request = getNetworkRequest(baseUrl);
        rep = manager.get(request);
    }

    if(rep->isFinished() && rep->size() != 0)
    {
        QString s;
        QString ver(VERSION);
        while(!rep->atEnd())
        {
            s = rep->readLine();

            QStringList parts = s.split(' ', QString::SkipEmptyParts);
            if(parts.size() < 3 || !ver.contains(parts[0]))
                continue;

            if(REVISION < parts[1].toInt())
                return RES_UPDATE_AVAILABLE;
            else
                return RES_NO_UPDATE;
        }
    }
    return RES_NO_UPDATE;
}