test

    public:

        File(const char *path,size_t version, const char *domain);

        virtual ~File();

        void write(const unsigned char *dest,size_t destsize);

        void read(char unsigned *src,size_t srcsize);

        void write(const unsigned char *dest,size_t destsize) override;

        void read(char unsigned *src,size_t srcsize) override;

        void lock();

        void unlock();

        void lock() override;

        void unlock() override;

        void setPos(size_t pos);

        size_t getPos();

        void setPos(size_t pos) override;

        size_t getPos() override;

        size_t end();

        size_t end() override;

        size_t getRevesion();

        void newRevesion();

        size_t getRevesion() override;

        void newRevesion() override;

        void vacuum();

        void vacuum() override;

        void purge() override;

    private:

        std::string  _filePath;