From: Junio C Hamano <gitster@pobox.com>
Date: Mon, 11 Nov 2019 02:34:26 GMT
Subject: Re: [PATCH v3 1/3] bundle: framework for options before bundle file
Message-ID: <xmqqlfsni1jh.fsf@gitster-ct.c.googlers.com>
In-Reply-To: <20191110204126.30553-1-robbat2@gentoo.org>

"Robin H. Johnson" <robbat2@gentoo.org> writes:

> +static int verbose;
> +
> +static int parse_options_cmd_bundle(int argc,
> +		const char **argv,
> +		const char* prefix,
> +		const char * const usagestr[],
> +		const struct option options[],
> +		const char **bundle_file) {
> +	int newargc;
> +	newargc = parse_options(argc, argv, NULL, options, usagestr,
> +			     PARSE_OPT_STOP_AT_NON_OPTION);
> +	if (argc < 1)
> +		usage_with_options(usagestr, options);
> +	*bundle_file = prefix_filename(prefix, argv[0]);
> +	return newargc;
> +}

Looks like a useful helper to be shared among subcommands.

> +static int cmd_bundle_create(int argc, const char **argv, const char *prefix) {
> +	struct option options[] = {
> +		OPT_END()
> +	};
> +	const char* bundle_file;
> ...
> +int cmd_bundle(int argc, const char **argv, const char *prefix)
> +{
> +	struct option options[] = {
> +		OPT__VERBOSE(&verbose, N_("be verbose; must be placed before a subcommand")),
> +		OPT_END()
> +	};
> +	int result;
> +
> +	argc = parse_options(argc, argv, prefix, options, builtin_bundle_usage,
> +		PARSE_OPT_STOP_AT_NON_OPTION);

Looks like a reasonable arrangement for two-level option parser.