import os


def get_terminal_size():
    """Return the current size of the terminal."""
    env = os.environ

    def ioctl_GWINSZ(fd):
        try:
            import fcntl
            import termios
            import struct
            cr = struct.unpack('hh', fcntl.ioctl(fd, termios.TIOCGWINSZ,
                                                 '1234'))
        except:
            return
        return cr

    cr = ioctl_GWINSZ(0) or ioctl_GWINSZ(1) or ioctl_GWINSZ(2)
    if not cr:
        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])
