Function loadPackProfile

launcher/minecraft/PackProfile.cpp:185–236

Read the given file into component containers

// Read the given file into component containers
static bool loadPackProfile(PackProfile * parent, const QString & filename, const QString & componentJsonPattern, ComponentContainer & container)
{
    QFile componentsFile(filename);
    if (!componentsFile.exists())
    {
        qWarning() << "Components file doesn't exist. This should never happen.";
        return false;
    }
    if (!componentsFile.open(QFile::ReadOnly))
    {
        qCritical() << "Couldn't open" << componentsFile.fileName()
                     << " for reading:" << componentsFile.errorString();
        qWarning() << "Ignoring overriden order";
        return false;
    }

    // and it's valid JSON
    QJsonParseError error;
    QJsonDocument doc = QJsonDocument::fromJson(componentsFile.readAll(), &error);
    if (error.error != QJsonParseError::NoError)
    {
        qCritical() << "Couldn't parse" << componentsFile.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("formatVersion"));
        if (version != currentComponentsFileVersion)
        {
            throw JSONValidationError(QObject::tr("Invalid component file version, expected %1")
                                          .arg(currentComponentsFileVersion));
        }
        auto orderArray = Json::requireArray(obj.value("components"));
        for(auto item: orderArray)
        {
            auto obj = Json::requireObject(item, "Component must be an object.");
            container.append(componentFromJsonV1(parent, componentJsonPattern, obj));
        }
    }
    catch (const JSONValidationError &err)
    {
        qCritical() << "Couldn't parse" << componentsFile.fileName() << ": bad file format";
        container.clear();
        return false;
    }
    return true;
}

// END: component file format