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From: Junio C Hamano <gitster@pobox.com>
To: "Hariom Verma via GitGitGadget" <gitgitgadget@gmail.com>
Cc: git@vger.kernel.org, Hariom Verma <hariom18599@gmail.com>
Subject: Re: [PATCH v2 2/3] pretty.c: capture invalid trailer argument
Date: Fri, 29 Jan 2021 16:01:31 -0800	[thread overview]
Message-ID: <xmqqsg6jqomc.fsf@gitster.c.googlers.com> (raw)
In-Reply-To: <245e48eb6835cae4e61f65af780b766d990d4b5f.1611954543.git.gitgitgadget@gmail.com> (Hariom Verma via GitGitGadget's message of "Fri, 29 Jan 2021 21:09:02 +0000")

"Hariom Verma via GitGitGadget" <gitgitgadget@gmail.com> writes:

> +			size_t invalid_arg_len = strcspn(*arg, ",)");
> +			*invalid_arg = xstrndup(*arg, invalid_arg_len);
> +			return 1;

How about doing this only when invalid_arg is not NULL, i.e.

	} else if (!match_placeholder_bool_arg(....) &&
		   ...
        	   !match_placeholder_bool_arg(....)) {
		if (invalid_arg) {
			size_t len = strcspn(*arg, ",)");
			*invalid_arg = xstrndup(*arg, len);
		}
		return -1;
	}

Note that I just used 'len'; when the scope of a variable is so
short, it is clear the length of what thing it refers to from the
context, and there is no point in using a variable name that long.

In any case, by doing so, the callers that are not interested in the
report can just pass NULL, which means ...

> @@ -1464,12 +1472,13 @@ static size_t format_commit_one(struct strbuf *sb, /* in UTF-8 */
>  		struct strbuf sepbuf = STRBUF_INIT;
>  		struct strbuf kvsepbuf = STRBUF_INIT;
>  		size_t ret = 0;
> +		char *unused = NULL;

... this will become unneeded, and ...

>  		opts.no_divider = 1;
>  
>  		if (*arg == ':') {
>  			arg++;
> -			if (format_set_trailers_options(&opts, &filter_list, &sepbuf, &kvsepbuf, &arg))
> +			if (format_set_trailers_options(&opts, &filter_list, &sepbuf, &kvsepbuf, &arg, &unused))
>  				goto trailer_out;

... this will pass NULL, and ...

>  		}
>  		if (*arg == ')') {
> @@ -1479,6 +1488,7 @@ static size_t format_commit_one(struct strbuf *sb, /* in UTF-8 */
>  	trailer_out:
>  		string_list_clear(&filter_list, 0);
>  		strbuf_release(&sepbuf);
> +		free((char *)unused);

... this will become unneeded.

>  		return ret;
>  	}
>  
> diff --git a/pretty.h b/pretty.h
> index 7369cf7e148..d902cdd70a9 100644
> --- a/pretty.h
> +++ b/pretty.h
> @@ -151,6 +151,7 @@ int format_set_trailers_options(struct process_trailer_options *opts,
>  			struct string_list *filter_list,
>  			struct strbuf *sepbuf,
>  			struct strbuf *kvsepbuf,
> -			const char **arg);
> +			const char **arg,
> +			char **invalid_arg);
>  
>  #endif /* PRETTY_H */

  parent reply	other threads:[~2021-01-30  0:03 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-05 19:48 [PATCH 0/2] Unify trailers formatting logic for pretty.c and ref-filter.c Hariom Verma via GitGitGadget
2020-09-05 19:48 ` [PATCH 1/2] pretty.c: refactor trailer logic to `format_set_trailers_options()` Hariom Verma via GitGitGadget
2020-09-05 21:59   ` René Scharfe
2020-09-05 19:48 ` [PATCH 2/2] ref-filter: using pretty.c logic for trailers Hariom Verma via GitGitGadget
2021-01-29 21:09 ` [PATCH v2 0/3] Unify trailers formatting logic for pretty.c and ref-filter.c Hariom Verma via GitGitGadget
2021-01-29 21:09   ` [PATCH v2 1/3] pretty.c: refactor trailer logic to `format_set_trailers_options()` Hariom Verma via GitGitGadget
2021-01-29 23:49     ` Junio C Hamano
2021-01-29 21:09   ` [PATCH v2 2/3] pretty.c: capture invalid trailer argument Hariom Verma via GitGitGadget
2021-01-29 22:28     ` Christian Couder
2021-01-30 19:16       ` Hariom verma
2021-01-30  0:01     ` Junio C Hamano [this message]
2021-01-30 19:00       ` Hariom verma
2021-01-30  0:07     ` Junio C Hamano
2021-01-30 19:06       ` Hariom verma
2021-01-29 21:09   ` [PATCH v2 3/3] ref-filter: use pretty.c logic for trailers Hariom Verma via GitGitGadget
2021-01-30 20:45     ` Ævar Arnfjörð Bjarmason
2021-02-04 18:46       ` Hariom verma
2021-02-04 20:53         ` Ævar Arnfjörð Bjarmason
2021-01-30  1:17   ` [PATCH v2 0/3] Unify trailers formatting logic for pretty.c and ref-filter.c Junio C Hamano
2021-01-30  1:28   ` Junio C Hamano
2021-01-30 19:15     ` Hariom verma
2021-01-30 20:20     ` Junio C Hamano
2021-02-06  9:15   ` [PATCH v3 " Hariom Verma via GitGitGadget
2021-02-06  9:15     ` [PATCH v3 1/3] pretty.c: refactor trailer logic to `format_set_trailers_options()` Hariom Verma via GitGitGadget
2021-02-06  9:15     ` [PATCH v3 2/3] pretty.c: capture invalid trailer argument Hariom Verma via GitGitGadget
2021-02-06  9:15     ` [PATCH v3 3/3] ref-filter: use pretty.c logic for trailers Hariom Verma via GitGitGadget
2021-02-07  5:45       ` Junio C Hamano
2021-02-07 12:06         ` Hariom verma
2021-02-07 18:19           ` Junio C Hamano
2021-02-07 19:38             ` Hariom verma
2021-02-07 20:09               ` Junio C Hamano
2021-02-08 17:07                 ` Hariom verma
2021-02-08 18:29                   ` Junio C Hamano
     [not found]                     ` <xmqqlfby5o9h.fsf@gitster.c.googlers.com>
2021-02-08 23:43                       ` brian m. carlson
2021-02-09  3:04                       ` brian m. carlson
2021-02-09 20:54                         ` Junio C Hamano
2021-02-07  3:33     ` [PATCH v3 0/3] Unify trailers formatting logic for pretty.c and ref-filter.c Junio C Hamano
2021-02-07  5:06       ` Junio C Hamano
2021-02-13  1:52     ` [PATCH v4 0/4] " Hariom Verma via GitGitGadget
2021-02-13  1:52       ` [PATCH v4 1/4] t6300: use function to test trailer options Hariom Verma via GitGitGadget
2021-02-13  1:52       ` [PATCH v4 2/4] pretty.c: refactor trailer logic to `format_set_trailers_options()` Hariom Verma via GitGitGadget
2021-02-13  1:52       ` [PATCH v4 3/4] pretty.c: capture invalid trailer argument Hariom Verma via GitGitGadget
2021-02-13  1:52       ` [PATCH v4 4/4] ref-filter: use pretty.c logic for trailers Hariom Verma via GitGitGadget

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