rogueinabox.py 文件源码

def open_terminal(command="bash", columns=80, lines=24):
    p_pid, master_fd = pty.fork()
    if p_pid == 0:  # Child.
        path, *args = shlex.split(command)
        args = [path] + args
        env = dict(TERM="linux", LC_ALL="en_GB.UTF-8",
                   COLUMNS=str(columns), LINES=str(lines))
        try:
            os.execvpe(path, args, env)
        except FileNotFoundError:
            print("Could not find the executable in %s. Press any key to exit." % path)
            exit()

    # set non blocking read
    flag = fcntl.fcntl(master_fd, fcntl.F_GETFD)
    fcntl.fcntl(master_fd, fcntl.F_SETFL, flag | os.O_NONBLOCK)
    # File-like object for I/O with the child process aka command.
    p_out = os.fdopen(master_fd, "w+b", 0)
    return Terminal(columns, lines), p_pid, p_out