On Wed, Nov 13, 2013 at 09:59:41PM +0900, Hitoshi Mitake wrote:
> Current dog command dies when user invokes "dog node log level set" without 
> any
> arguments because of its subcommand design. This patch removes this 
> limitation.
> 
> Signed-off-by: Hitoshi Mitake <[email protected]>
> ---
> 
> v3: declare the depth as a static variable
> 
> v2: define do_generic_subcommand() as a macro for a common case (depth == 0)
> 
>  dog/common.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/dog/common.c b/dog/common.c
> index 4480b99..8c9b326 100644
> --- a/dog/common.c
> +++ b/dog/common.c
> @@ -227,7 +227,9 @@ int send_light_req(const struct node_id *nid, struct 
> sd_req *hdr)
>  int do_generic_subcommand(struct subcommand *sub, int argc, char **argv)
>  {
>       int i, ret;
> +     static int depth = -1;
>  
> +     depth++;
>       for (i = 0; sub[i].name; i++) {
>               if (!strcmp(sub[i].name, argv[optind])) {
>                       unsigned long flags = sub[i].flags;
> @@ -240,7 +242,7 @@ int do_generic_subcommand(struct subcommand *sub, int 
> argc, char **argv)
>                               }
>                       }
>  
> -                     if (flags & CMD_NEED_ARG && argc < 5)
> +                     if (flags & CMD_NEED_ARG && argc < 5 + depth)
>                               subcommand_usage(argv[1], argv[2], EXIT_USAGE);
>                       optind++;
>                       ret = sub[i].fn(argc, argv);
> @@ -250,6 +252,7 @@ int do_generic_subcommand(struct subcommand *sub, int 
> argc, char **argv)
>               }
>       }
>  
> +     depth--;
>       subcommand_usage(argv[1], argv[2], EXIT_FAILURE);
>       return EXIT_FAILURE;
>  }

Applied thanks. I think subcommand_usage need fixes too.

Yuan
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