func NewTerminal() (*Terminal, error) {
eng, err := minterm.New()
if err != nil {
return nil, err
}
return &Terminal{engine: eng}, nil
}
func (t *Terminal) open() error {
var err error
t.once.Do(func() {
if t.engine != nil {
return
}
var eng *minterm.MinTerm
eng, err = minterm.New()
if err != nil {
return
}
t.engine = eng
return
})
return err
}