unix_console.py 文件源码

def prepare(self):
        # per-readline preparations:
        self.__svtermstate = tcgetattr(self.input_fd)
        raw = self.__svtermstate.copy()
        raw.iflag |= termios.ICRNL
        raw.iflag &= ~(termios.BRKINT | termios.INPCK |
                       termios.ISTRIP | termios.IXON)
        raw.oflag &= ~termios.OPOST
        raw.cflag &= ~(termios.CSIZE | termios.PARENB)
        raw.cflag |= (termios.CS8)
        raw.lflag &= ~(termios.ICANON | termios.ECHO |
                       termios.IEXTEN | (termios.ISIG * 1))
        raw.cc[termios.VMIN] = 1
        raw.cc[termios.VTIME] = 0
        tcsetattr(self.input_fd, termios.TCSADRAIN, raw)

        self.screen = []
        self.height, self.width = self.getheightwidth()

        self.__buffer = []

        self.__posxy = 0, 0
        self.__gone_tall = 0
        self.__move = self.__move_short
        self.__offset = 0

        self.__maybe_write_code(self._smkx)

        try:
            self.old_sigwinch = signal.signal(
                signal.SIGWINCH, self.__sigwinch)
        except ValueError:
            pass