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moby--moby/term/termios_darwin.go

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package term
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import (
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"syscall"
"unsafe"
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)
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const (
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getTermios = syscall.TIOCGETA
setTermios = syscall.TIOCSETA
ECHO = 0x00000008
ONLCR = 0x2
ISTRIP = 0x20
INLCR = 0x40
ISIG = 0x80
IGNCR = 0x80
ICANON = 0x100
ICRNL = 0x100
IXOFF = 0x400
IXON = 0x200
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)
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type Termios struct {
Iflag uint64
Oflag uint64
Cflag uint64
Lflag uint64
Cc [20]byte
Ispeed uint64
Ospeed uint64
}
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// MakeRaw put the terminal connected to the given file descriptor into raw
// mode and returns the previous state of the terminal so that it can be
// restored.
func MakeRaw(fd uintptr) (*State, error) {
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var oldState State
if _, _, err := syscall.Syscall(syscall.SYS_IOCTL, fd, uintptr(getTermios), uintptr(unsafe.Pointer(&oldState.termios))); err != 0 {
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return nil, err
}
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newState := oldState.termios
newState.Iflag &^= (ISTRIP | INLCR | IGNCR | IXON | IXOFF)
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newState.Iflag |= ICRNL
newState.Oflag |= ONLCR
newState.Lflag &^= (ECHO | ICANON | ISIG)
if _, _, err := syscall.Syscall(syscall.SYS_IOCTL, fd, uintptr(setTermios), uintptr(unsafe.Pointer(&newState))); err != 0 {
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return nil, err
}
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return &oldState, nil
}