//go:build !brlapi || !cgo

package braille

type unavailable struct{}

func New() Backend                          { return unavailable{} }
func NewRouting() Backend                   { return unavailable{} }
func (unavailable) Open() (Geometry, error) { return Geometry{}, ErrUnavailable }
func (unavailable) Write(string, int) error { return ErrUnavailable }
func (unavailable) ReadKey() (Key, error)   { return NoKey, ErrUnavailable }
func (unavailable) Close() error            { return nil }