+ template<typename T>
+ class Register: RegisterBase
+ {
+ public:
+ virtual unsigned get_signature_size() const { return T::get_signature_size(); }
+ virtual bool detect(const std::string &s) const { return T::detect(s); }
+ virtual T *create(IO::Seekable &io) const { return new T(io); }
+ };
+
+private:
+ IO::Base *source;