github.com/lazyboychen7/engine@v17.12.1-ce-rc2+incompatible/pkg/term/termios_linux.go (about)

     1  package term
     2  
     3  import (
     4  	"golang.org/x/sys/unix"
     5  )
     6  
     7  const (
     8  	getTermios = unix.TCGETS
     9  	setTermios = unix.TCSETS
    10  )
    11  
    12  // Termios is the Unix API for terminal I/O.
    13  type Termios unix.Termios
    14  
    15  // MakeRaw put the terminal connected to the given file descriptor into raw
    16  // mode and returns the previous state of the terminal so that it can be
    17  // restored.
    18  func MakeRaw(fd uintptr) (*State, error) {
    19  	termios, err := unix.IoctlGetTermios(int(fd), getTermios)
    20  	if err != nil {
    21  		return nil, err
    22  	}
    23  
    24  	var oldState State
    25  	oldState.termios = Termios(*termios)
    26  
    27  	termios.Iflag &^= (unix.IGNBRK | unix.BRKINT | unix.PARMRK | unix.ISTRIP | unix.INLCR | unix.IGNCR | unix.ICRNL | unix.IXON)
    28  	termios.Oflag &^= unix.OPOST
    29  	termios.Lflag &^= (unix.ECHO | unix.ECHONL | unix.ICANON | unix.ISIG | unix.IEXTEN)
    30  	termios.Cflag &^= (unix.CSIZE | unix.PARENB)
    31  	termios.Cflag |= unix.CS8
    32  	termios.Cc[unix.VMIN] = 1
    33  	termios.Cc[unix.VTIME] = 0
    34  
    35  	if err := unix.IoctlSetTermios(int(fd), setTermios, termios); err != nil {
    36  		return nil, err
    37  	}
    38  	return &oldState, nil
    39  }