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From: Glen Choo <chooglen@google.com>
To: Linus Arver via GitGitGadget <gitgitgadget@gmail.com>,
	git@vger.kernel.org
Cc: Linus Arver <linusa@google.com>
Subject: Re: [PATCH 3/5] trailer: split process_command_line_args into separate functions
Date: Mon, 07 Aug 2023 15:51:59 -0700	[thread overview]
Message-ID: <kl6l1qgea2k0.fsf@chooglen-macbookpro.roam.corp.google.com> (raw)
In-Reply-To: <c8bb013662187e9239d4a2499a63ed76daa78d14.1691211879.git.gitgitgadget@gmail.com>

"Linus Arver via GitGitGadget" <gitgitgadget@gmail.com> writes:

> Previously, process_command_line_args did two things:
>
>     (1) parse trailers from the configuration, and
>     (2) parse trailers defined on the command line.

It parses trailers from two places, but it still only does "one thing",
in that it only parses trailers.

> @@ -711,30 +711,35 @@ static void add_arg_item(struct list_head *arg_head, char *tok, char *val,
>  	list_add_tail(&new_item->list, arg_head);
>  }
>  
> -static void process_command_line_args(struct list_head *arg_head,
> -				      struct list_head *new_trailer_head)
> +static void parse_trailers_from_config(struct list_head *config_head)
>  {
>  	struct arg_item *item;
> -	struct strbuf tok = STRBUF_INIT;
> -	struct strbuf val = STRBUF_INIT;
> -	const struct conf_info *conf;
>  	struct list_head *pos;
>  
> -	/*
> -	 * In command-line arguments, '=' is accepted (in addition to the
> -	 * separators that are defined).
> -	 */
> -	char *cl_separators = xstrfmt("=%s", separators);
> -
>  	/* Add an arg item for each configured trailer with a command */
>  	list_for_each(pos, &conf_head) {
>  		item = list_entry(pos, struct arg_item, list);
>  		if (item->conf.command)
> -			add_arg_item(arg_head,
> +			add_arg_item(config_head,
>  				     xstrdup(token_from_item(item, NULL)),
>  				     xstrdup(""),
>  				     &item->conf, NULL);
>  	}
> +}
> +
> +static void parse_trailers_from_command_line_args(struct list_head *arg_head,
> +						  struct list_head *new_trailer_head)
> +{
> +	struct strbuf tok = STRBUF_INIT;
> +	struct strbuf val = STRBUF_INIT;
> +	const struct conf_info *conf;
> +	struct list_head *pos;
> +
> +	/*
> +	 * In command-line arguments, '=' is accepted (in addition to the
> +	 * separators that are defined).
> +	 */
> +	char *cl_separators = xstrfmt("=%s", separators);
>  
>  	/* Add an arg item for each trailer on the command line */
>  	list_for_each(pos, new_trailer_head) {

I find this equally readable as the preimage, which IMO is adequately
scoped and commented.

> @@ -1070,8 +1075,11 @@ void process_trailers(const char *file,
>  
>  
>  	if (!opts->only_input) {
> +		LIST_HEAD(config_head);
>  		LIST_HEAD(arg_head);
> -		process_command_line_args(&arg_head, new_trailer_head);
> +		parse_trailers_from_config(&config_head);
> +		parse_trailers_from_command_line_args(&arg_head, new_trailer_head);
> +		list_splice(&config_head, &arg_head);
>  		process_trailers_lists(&head, &arg_head);
>  	}

But now, we have to remember to call two functions instead of just one.
This, and the slight additional churn makes me lean negative on this
change. I would be really happy if we had a use case where we only
wanted to call one function but not the other, but it seems like this
isn't the case.

  reply	other threads:[~2023-08-07 22:52 UTC|newest]

Thread overview: 72+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-08-05  5:04 [PATCH 0/5] Trailer readability cleanups Linus Arver via GitGitGadget
2023-08-05  5:04 ` [PATCH 1/5] trailer: separate public from internal portion of trailer_iterator Linus Arver via GitGitGadget
2023-08-07 21:16   ` Glen Choo
2023-08-08 12:19     ` Phillip Wood
2023-08-10 23:15       ` Linus Arver
2023-08-10 22:50     ` Linus Arver
2023-08-05  5:04 ` [PATCH 2/5] trailer: split process_input_file into separate pieces Linus Arver via GitGitGadget
2023-08-07 22:39   ` Glen Choo
2023-08-11  0:41     ` Linus Arver
2023-08-05  5:04 ` [PATCH 3/5] trailer: split process_command_line_args into separate functions Linus Arver via GitGitGadget
2023-08-07 22:51   ` Glen Choo [this message]
2023-08-11  0:59     ` Linus Arver
2023-08-11  1:02       ` Linus Arver
2023-08-11 21:11       ` Glen Choo
2023-08-05  5:04 ` [PATCH 4/5] trailer: teach find_patch_start about --no-divider Linus Arver via GitGitGadget
2023-08-07 23:28   ` Glen Choo
2023-08-11  1:25     ` Linus Arver
2023-08-11 20:51       ` Glen Choo
2023-08-05  5:04 ` [PATCH 5/5] trailer: rename *_DEFAULT enums to *_UNSPECIFIED Linus Arver via GitGitGadget
2023-08-07 23:45   ` Glen Choo
2023-08-11 18:00     ` Linus Arver
2023-09-09  6:16 ` [PATCH v2 0/6] Trailer readability cleanups Linus Arver via GitGitGadget
2023-09-09  6:16   ` [PATCH v2 1/6] trailer: separate public from internal portion of trailer_iterator Linus Arver via GitGitGadget
2023-09-11 17:10     ` Junio C Hamano
2023-09-09  6:16   ` [PATCH v2 2/6] trailer: split process_input_file into separate pieces Linus Arver via GitGitGadget
2023-09-11 17:10     ` Junio C Hamano
2023-09-09  6:16   ` [PATCH v2 3/6] trailer: split process_command_line_args into separate functions Linus Arver via GitGitGadget
2023-09-09  6:16   ` [PATCH v2 4/6] trailer: teach find_patch_start about --no-divider Linus Arver via GitGitGadget
2023-09-11 17:25     ` Junio C Hamano
2023-09-14  2:19       ` Linus Arver
2023-09-14  3:12         ` Junio C Hamano
2023-09-14  5:31           ` Linus Arver
2023-09-09  6:16   ` [PATCH v2 5/6] trailer: rename *_DEFAULT enums to *_UNSPECIFIED Linus Arver via GitGitGadget
2023-09-11 18:54     ` Junio C Hamano
2023-09-14  2:41       ` Linus Arver
2023-09-14  3:16         ` Junio C Hamano
2023-09-22 18:23           ` Linus Arver
2023-09-22 19:48             ` Junio C Hamano
2023-09-26  5:30               ` Linus Arver
2023-09-09  6:16   ` [PATCH v2 6/6] trailer: use offsets for trailer_start/trailer_end Linus Arver via GitGitGadget
2023-09-11 19:01     ` Junio C Hamano
2023-09-14  1:21       ` Linus Arver
2023-09-14  3:18         ` Linus Arver
2023-09-22 19:50   ` [PATCH v3 0/9] Trailer readability cleanups Linus Arver via GitGitGadget
2023-09-22 19:50     ` [PATCH v3 1/9] trailer: separate public from internal portion of trailer_iterator Linus Arver via GitGitGadget
2023-09-22 19:50     ` [PATCH v3 2/9] trailer: split process_input_file into separate pieces Linus Arver via GitGitGadget
2023-09-22 19:50     ` [PATCH v3 3/9] trailer: split process_command_line_args into separate functions Linus Arver via GitGitGadget
2023-09-22 19:50     ` [PATCH v3 4/9] trailer: rename *_DEFAULT enums to *_UNSPECIFIED Linus Arver via GitGitGadget
2023-09-22 19:50     ` [PATCH v3 5/9] commit: ignore_non_trailer computes number of bytes to ignore Linus Arver via GitGitGadget
2023-09-22 19:50     ` [PATCH v3 6/9] trailer: find the end of the log message Linus Arver via GitGitGadget
2023-09-22 19:50     ` [PATCH v3 7/9] trailer: use offsets for trailer_start/trailer_end Linus Arver via GitGitGadget
2023-09-22 19:50     ` [PATCH v3 8/9] trailer: only use trailer_block_* variables if trailers were found Linus Arver via GitGitGadget
2023-09-22 19:50     ` [PATCH v3 9/9] trailer: make stack variable names match field names Linus Arver via GitGitGadget
2023-09-22 22:47     ` [PATCH v3 0/9] Trailer readability cleanups Junio C Hamano
2023-09-22 23:13       ` Linus Arver
2023-09-23  0:48         ` Junio C Hamano
2023-09-26  5:40           ` Linus Arver
2023-09-26  6:22     ` [PATCH v4 0/4] " Linus Arver via GitGitGadget
2023-09-26  6:22       ` [PATCH v4 1/4] commit: ignore_non_trailer computes number of bytes to ignore Linus Arver via GitGitGadget
2023-09-26  6:22       ` [PATCH v4 2/4] trailer: find the end of the log message Linus Arver via GitGitGadget
2023-09-28 23:16         ` Jonathan Tan
2023-10-20  0:24           ` Linus Arver
2023-10-20  0:36             ` Junio C Hamano
2023-09-26  6:22       ` [PATCH v4 3/4] trailer: use offsets for trailer_start/trailer_end Linus Arver via GitGitGadget
2023-09-26  6:22       ` [PATCH v4 4/4] trailer: only use trailer_block_* variables if trailers were found Linus Arver via GitGitGadget
2023-10-20 19:01       ` [PATCH v5 0/3] Trailer readability cleanups Linus Arver via GitGitGadget
2023-10-20 19:01         ` [PATCH v5 1/3] commit: ignore_non_trailer computes number of bytes to ignore Linus Arver via GitGitGadget
2023-10-20 19:01         ` [PATCH v5 2/3] trailer: find the end of the log message Linus Arver via GitGitGadget
2023-10-20 21:29           ` Junio C Hamano
2023-12-29  6:42             ` Linus Arver
2023-12-29 21:03               ` Linus Arver
2023-10-20 19:01         ` [PATCH v5 3/3] trailer: use offsets for trailer_start/trailer_end Linus Arver via GitGitGadget

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