PrismLauncher/launcher/minecraft/gameoptions/GameOptions.h

#pragma once

#include <QAbstractListModel>
#include <QString>
#include <map>

struct GameOptionItem {
    QString key;
    QString value;
};

class GameOptions : public QAbstractListModel {
    Q_OBJECT
   public:
    explicit GameOptions(const QString& path);
    virtual ~GameOptions() = default;

    int rowCount(const QModelIndex& parent = QModelIndex()) const override;
    int columnCount(const QModelIndex& parent) const override;
    QVariant data(const QModelIndex& index, int role = Qt::DisplayRole) const override;
    QVariant headerData(int section, Qt::Orientation orientation, int role) const override;

    bool isLoaded() const;
    bool reload();
    bool save();

   private:
    std::vector<GameOptionItem> contents;
    bool loaded = false;
    QString path;
    int version = 0;
};