CMD_OPTIONS_NODE_START(eth_cmd)
CMD_OPTIONS_NODE(1, write, tx data)
CMD_OPTIONS_NODE(2, irq, irq list)
CMD_OPTIONS_NODE(3, speed-test, eth physical speed test)
CMD_OPTIONS_NODE_END
MSH_CMD_EXPORT_ALIAS(eth_cmd, eth, eth cmd, optenable)

#define MSH_FUNCTION_EXPORT_CMD(name, cmd, desc, opt)                           \
                __TI_FINSH_EXPORT_FUNCTION(__fsym_##cmd);                       \
                const char __fsym_##cmd##_name[] = #cmd;                        \
                const char __fsym_##cmd##_desc[] = #desc;                       \
                rt_used RT_NOBLOCKED const struct finsh_syscall __fsym_##cmd =  \
                {                           \
                    __fsym_##cmd##_name,    \
                    __fsym_##cmd##_desc,    \
                    opt,                    \
                    (syscall_func)&name     \
                };

typedef struct msh_cmd_opt
{
    rt_uint32_t         id;
    const char          *name;
    const char          *des;
} msh_cmd_opt_t;

#define CMD_OPTIONS_STATEMENT(command) static struct msh_cmd_opt command##_msh_options[];
#define CMD_OPTIONS_NODE_START(command) static struct msh_cmd_opt command##_msh_options[] = {
#define CMD_OPTIONS_NODE(_id, _name, _des) {.id = _id, .name = #_name, .des = #_des},
#define CMD_OPTIONS_NODE_END    {0},};

void msh_opt_auto_complete(char *prefix)
{
    int argc;
    char *opt_str = RT_NULL;
    msh_cmd_opt_t *opt = RT_NULL;

    if ((argc = msh_get_argc(prefix, &opt_str)))
    {
        opt = msh_get_cmd_opt(prefix);
    }
    else if (!msh_get_cmd(prefix, strlen(prefix)) && (' ' == prefix[strlen(prefix) - 1]))
    {
        opt = msh_get_cmd_opt(prefix);
    }

    if (opt && opt->id)
    {
        switch (argc)
        {
        case 0:
            msh_opt_help(opt);
            break;

        case 1:
            msh_opt_complete(opt_str, opt);
            break;

        default:
            break;
        }
    }
}