ptyhooks.py 文件源码

def copy_winsize(target_fd, source_fd=STDIN_FILENO):
    """
    Propagate terminal size from `source_fd` to `target_fd`.
    """
    # Create a buffer to store terminal size attributes. Refer to tty_ioctl(4)
    # for more information.
    winsize = array.array("h", [
        0,  # unsigned short ws_row
        0,  # unsigned short ws_col
        0,  # unsigned short ws_xpixel (unused)
        0,  # unsigned short ws_ypixel (unused)
    ])

    # Write window size into winsize variable.
    fcntl.ioctl(source_fd, termios.TIOCGWINSZ, winsize, True)
    # Send winsize to target terminal.
    fcntl.ioctl(target_fd, termios.TIOCSWINSZ, winsize)