terminal_input.py 文件源码

def initialise(self):
        if not self.enabled:
            return
        if termios is None:
            self.enabled = False
            return
        try:
            self.tty = open("/dev/tty", "w+")
            os.tcgetpgrp(self.tty.fileno())
            self.clean_tcattr = termios.tcgetattr(self.tty)
            iflag, oflag, cflag, lflag, ispeed, ospeed, cc = self.clean_tcattr
            new_lflag = lflag & (0xffffffff ^ termios.ICANON)
            new_cc = cc[:]
            new_cc[termios.VMIN] = 0
            self.cbreak_tcattr = [
                iflag, oflag, cflag, new_lflag, ispeed, ospeed, new_cc]
        except Exception:
            self.enabled = False
            return