| 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 |
| } |