// Open opens an asynchronous communications port.
func Open(name string, options ...func(*Term) error) (*Term, error) {
fd, e := syscall.Open(name, syscall.O_NOCTTY|syscall.O_CLOEXEC|syscall.O_NDELAY|syscall.O_RDWR, 0666)
if e != nil {
return nil, &os.PathError{"open", name, e}
}
modules := [2]string{"ptem", "ldterm"}
for _, mod := range modules {
err := unix.IoctlSetInt(fd, C.I_PUSH, int(uintptr(unsafe.Pointer(syscall.StringBytePtr(mod)))))
if err != nil {
return nil, err
}
}
t := Term{name: name, fd: fd}
termios.Tcgetattr(uintptr(t.fd), &t.orig)
if err := termios.Tcgetattr(uintptr(t.fd), &t.orig); err != nil {
return nil, err
}
if err := t.SetOption(options...); err != nil {
return nil, err
}
return &t, syscall.SetNonblock(t.fd, false)
}
func getTerm() syscall.Termios {
var term syscall.Termios
if err := termios.Tcgetattr(uintptr(syscall.Stdin), &term); err != nil {
panic(err)
}
return term
}
func tcgetattr(fd uintptr) (syscall.Termios, error) {
var t syscall.Termios
if err := termios.Tcgetattr(fd, &t); err != nil {
return t, fmt.Errorf("tcgetattr: %v", err)
}
return t, nil
}
func (t *Term) setSpeed(baud int) error {
var a attr
if err := termios.Tcgetattr(uintptr(t.fd), (*syscall.Termios)(&a)); err != nil {
return err
}
a.setSpeed(baud)
return termios.Tcsetattr(uintptr(t.fd), termios.TCSANOW, (*syscall.Termios)(&a))
}
// RawMode places the terminal into raw mode.
func RawMode(t *Term) error {
var a attr
if err := termios.Tcgetattr(uintptr(t.fd), (*syscall.Termios)(&a)); err != nil {
return err
}
termios.Cfmakeraw((*syscall.Termios)(&a))
return termios.Tcsetattr(uintptr(t.fd), termios.TCSANOW, (*syscall.Termios)(&a))
}
func (t *Term) setReadTimeout(d time.Duration) error {
var a attr
if err := termios.Tcgetattr(uintptr(t.fd), (*syscall.Termios)(&a)); err != nil {
return err
}
a.Cc[syscall.VMIN], a.Cc[syscall.VTIME] = timeoutVals(d)
return termios.Tcsetattr(uintptr(t.fd), termios.TCSANOW, (*syscall.Termios)(&a))
}
// Open opens an asynchronous communications port.
func Open(name string, options ...func(*Term) error) (*Term, error) {
fd, e := syscall.Open(name, syscall.O_NOCTTY|syscall.O_CLOEXEC|syscall.O_RDWR, 0666)
if e != nil {
return nil, &os.PathError{"open", name, e}
}
t := Term{name: name, fd: fd}
if err := termios.Tcgetattr(uintptr(t.fd), &t.orig); err != nil {
return nil, err
}
return &t, t.SetOption(options...)
}
func SetRaw(tty *os.File) error {
var attr syscall.Termios
err := termios.Tcgetattr(uintptr(tty.Fd()), (*syscall.Termios)(&attr))
if err != nil {
return err
}
termios.Cfmakeraw((*syscall.Termios)(&attr))
return termios.Tcsetattr(uintptr(tty.Fd()), termios.TCSANOW, (*syscall.Termios)(&attr))
}
// Open opens an asynchronous communications port.
func Open(name string, options ...func(*Term) error) (*Term, error) {
fd, e := syscall.Open(name, syscall.O_NOCTTY|syscall.O_CLOEXEC|syscall.O_NDELAY|syscall.O_RDWR, 0666)
if e != nil {
return nil, &os.PathError{"open", name, e}
}
t := Term{name: name, fd: fd}
if err := termios.Tcgetattr(uintptr(t.fd), &t.orig); err != nil {
time.Sleep(time.Second * 100)
return nil, err
}
if err := t.SetOption(options...); err != nil {
return nil, err
}
return &t, syscall.SetNonblock(t.fd, false)
}
func (p *Pty) Copy(o *os.File) (err error) {
var attr syscall.Termios
if err = termios.Tcgetattr(o.Fd(), &attr); err != nil {
return err
}
w, h, err := GetSize(o.Fd())
if err != nil {
return err
}
if err = SetSize(p.tty.Fd(), w, h); err != nil {
return err
}
err = termios.Tcsetattr(p.tty.Fd(), termios.TCSADRAIN, &attr)
if err != nil {
return err
}
return nil
}
func (t *Term) setFlowControl(kind int) error {
var a attr
if err := termios.Tcgetattr(uintptr(t.fd), (*syscall.Termios)(&a)); err != nil {
return err
}
switch kind {
case NONE:
a.Iflag &^= termios.IXON | termios.IXOFF | termios.IXANY
a.Cflag &^= termios.CRTSCTS
case XONXOFF:
a.Cflag &^= termios.CRTSCTS
a.Iflag |= termios.IXON | termios.IXOFF | termios.IXANY
case HARDWARE:
a.Iflag &^= termios.IXON | termios.IXOFF | termios.IXANY
a.Cflag |= termios.CRTSCTS
}
return termios.Tcsetattr(uintptr(t.fd), termios.TCSANOW, (*syscall.Termios)(&a))
}