| package term |
| |
| import ( |
| "syscall" |
| "unsafe" |
| ) |
| |
| const ( |
| getTermios = syscall.TCGETS |
| setTermios = syscall.TCSETS |
| ) |
| |
| type Termios struct { |
| Iflag uint32 |
| Oflag uint32 |
| Cflag uint32 |
| Lflag uint32 |
| Cc [20]byte |
| Ispeed uint32 |
| Ospeed uint32 |
| } |
| |
| // 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, getTermios, uintptr(unsafe.Pointer(&oldState.termios))); err != 0 { |
| return nil, err |
| } |
| |
| newState := oldState.termios |
| |
| newState.Iflag &^= (syscall.IGNBRK | syscall.BRKINT | syscall.PARMRK | syscall.ISTRIP | syscall.INLCR | syscall.IGNCR | syscall.ICRNL | syscall.IXON) |
| newState.Oflag &^= syscall.OPOST |
| newState.Lflag &^= (syscall.ECHO | syscall.ECHONL | syscall.ICANON | syscall.ISIG | syscall.IEXTEN) |
| newState.Cflag &^= (syscall.CSIZE | syscall.PARENB) |
| newState.Cflag |= syscall.CS8 |
| |
| if _, _, err := syscall.Syscall(syscall.SYS_IOCTL, fd, setTermios, uintptr(unsafe.Pointer(&newState))); err != 0 { |
| return nil, err |
| } |
| return &oldState, nil |
| } |