Function readOverrideOrders

launcher/minecraft/ProfileUtils.cpp:52–103

static const int currentOrderFileVersion = 1;

bool readOverrideOrders(QString path, PatchOrder &order)
{
    QFile orderFile(path);
    if (!orderFile.exists())
    {
        qWarning() << "Order file doesn't exist. Ignoring.";
        return false;
    }
    if (!orderFile.open(QFile::ReadOnly))
    {
        qCritical() << "Couldn't open" << orderFile.fileName()
                     << " for reading:" << orderFile.errorString();
        qWarning() << "Ignoring overriden order";
        return false;
    }

    // and it's valid JSON
    QJsonParseError error;
    QJsonDocument doc = QJsonDocument::fromJson(orderFile.readAll(), &error);
    if (error.error != QJsonParseError::NoError)
    {
        qCritical() << "Couldn't parse" << orderFile.fileName() << ":" << error.errorString();
        qWarning() << "Ignoring overriden order";
        return false;
    }

    // and then read it and process it if all above is true.
    try
    {
        auto obj = Json::requireObject(doc);
        // check order file version.
        auto version = Json::requireInteger(obj.value("version"));
        if (version != currentOrderFileVersion)
        {
            throw JSONValidationError(QObject::tr("Invalid order file version, expected %1")
                                          .arg(currentOrderFileVersion));
        }
        auto orderArray = Json::requireArray(obj.value("order"));
        for(auto item: orderArray)
        {
            order.append(Json::requireString(item));
        }
    }
    catch (const JSONValidationError &err)
    {
        qCritical() << "Couldn't parse" << orderFile.fileName() << ": bad file format";
        qWarning() << "Ignoring overriden order";
        order.clear();
        return false;
    }
    return true;
}

static VersionFilePtr createErrorVersionFile(QString fileId, QString filepath, QString error)
{