Method versionFileFromJson

launcher/minecraft/OneSixVersionFormat.cpp:80–283

}

VersionFilePtr OneSixVersionFormat::versionFileFromJson(const QJsonDocument& doc, const QString& filename, const bool requireOrder)
{
    VersionFilePtr out(new VersionFile());
    if (doc.isEmpty() || doc.isNull()) {
        throw JSONValidationError(filename + " is empty or null");
    }
    if (!doc.isObject()) {
        throw JSONValidationError(filename + " is not an object");
    }

    QJsonObject root = doc.object();

    Meta::MetadataVersion formatVersion = Meta::parseFormatVersion(root, false);
    switch (formatVersion) {
        case Meta::MetadataVersion::InitialRelease:
            break;
        case Meta::MetadataVersion::Invalid:
            throw JSONValidationError(filename + " does not contain a recognizable version of the metadata format.");
    }

    if (requireOrder) {
        if (root.contains("order")) {
            out->order = requireInteger(root.value("order"));
        } else {
            // FIXME: evaluate if we don't want to throw exceptions here instead
            qCritical() << filename << "doesn't contain an order field";
        }
    }

    out->name = root.value("name").toString();

    if (root.contains("uid")) {
        out->uid = root.value("uid").toString();
    } else {
        out->uid = root.value("fileId").toString();
    }

    static const QRegularExpression s_validUidRegex{ QRegularExpression::anchoredPattern(
        QStringLiteral(R"([a-zA-Z0-9-_]+(?:\.[a-zA-Z0-9-_]+)*)")) };
    if (!s_validUidRegex.match(out->uid).hasMatch()) {
        qCritical() << "The component's 'uid' contains illegal characters! UID:" << out->uid;
        out->addProblem(ProblemSeverity::Error,
                        QObject::tr("The component's 'uid' contains illegal characters! This can cause security issues."));
    }

    out->version = root.value("version").toString();

    MojangVersionFormat::readVersionProperties(root, out.get());

    // added for legacy Minecraft window embedding, TODO: remove
    readString(root, "appletClass", out->appletClass);

    if (root.contains("+tweakers")) {
        for (auto tweakerVal : requireArray(root.value("+tweakers"))) {
            out->addTweakers.append(requireString(tweakerVal));
        }
    }