log.py 文件源码

def getTerminalSize():
    """
    returns the terminal width and height
    :return: the terminal width and height
    """

    import os
    env = os.environ

    def ioctl_GWINSZ(fdi):
        # noinspection PyBroadException
        try:
            import fcntl
            import termios
            import struct
            cri = struct.unpack('hh', fcntl.ioctl(fdi, termios.TIOCGWINSZ, '1234'))
        except:
            return
        return cri

    cr = ioctl_GWINSZ(0) or ioctl_GWINSZ(1) or ioctl_GWINSZ(2)

    if not cr:
        # noinspection PyBroadException
        try:
            fd = os.open(os.ctermid(), os.O_RDONLY)
            cr = ioctl_GWINSZ(fd)
            os.close(fd)
        except:
            pass

    if not cr:
        cr = (env.get('LINES', 25), env.get('COLUMNS', 80))

    return int(cr[1]), int(cr[0])