Move utility package 'term' to pkg/term

term/termios_darwin.go

@@ -0,0 +1,54 @@
+package term
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+const (
+	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
+)
+
+type Termios struct {
+	Iflag  uint64
+	Oflag  uint64
+	Cflag  uint64
+	Lflag  uint64
+	Cc     [20]byte
+	Ispeed uint64
+	Ospeed uint64
+}
+
+// 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) {
+	var oldState State
+	if _, _, err := syscall.Syscall(syscall.SYS_IOCTL, fd, uintptr(getTermios), uintptr(unsafe.Pointer(&oldState.termios))); err != 0 {
+		return nil, err
+	}
+
+	newState := oldState.termios
+	newState.Iflag &^= (ISTRIP | INLCR | IGNCR | IXON | IXOFF)
+	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 {
+		return nil, err
+	}
+
+	return &oldState, nil
+}