Function parse_options

parse-options.c:1181–1235

}

int parse_options(int argc, const char **argv,
		  const char *prefix,
		  const struct option *options,
		  const char * const usagestr[],
		  enum parse_opt_flags flags)
{
	struct parse_opt_ctx_t ctx;
	struct option *real_options;

	disallow_abbreviated_options =
		git_env_bool("GIT_TEST_DISALLOW_ABBREVIATED_OPTIONS", 0);

	memset(&ctx, 0, sizeof(ctx));
	real_options = preprocess_options(&ctx, options);
	if (real_options)
		options = real_options;
	parse_options_start_1(&ctx, argc, argv, prefix, options, flags);
	switch (parse_options_step(&ctx, options, usagestr)) {
	case PARSE_OPT_HELP:
	case PARSE_OPT_ERROR:
		exit(129);
	case PARSE_OPT_COMPLETE:
		exit(0);
	case PARSE_OPT_NON_OPTION:
	case PARSE_OPT_SUBCOMMAND:
		break;
	case PARSE_OPT_DONE:
		if (ctx.has_subcommands &&
		    !(flags & PARSE_OPT_SUBCOMMAND_OPTIONAL)) {
			error(_("need a subcommand"));
			usage_with_options(usagestr, options);
		}
		break;
	case PARSE_OPT_UNKNOWN:
		if (ctx.argv[0][1] == '-') {
			error(_("unknown option `%s'"), ctx.argv[0] + 2);
		} else if (isascii(*ctx.opt)) {
			error(_("unknown switch `%c'"), *ctx.opt);
		} else {
			error(_("unknown non-ascii option in string: `%s'"),
			      ctx.argv[0]);
		}
		usage_with_options(usagestr, options);
	}

	precompose_argv_prefix(argc, argv, NULL);
	free_preprocessed_options(real_options);
	free(ctx.alias_groups);
	for (struct parse_opt_cmdmode_list *elem = ctx.cmdmode_list; elem;) {
		struct parse_opt_cmdmode_list *next = elem->next;
		free(elem);
		elem = next;
	}
	return parse_options_end(&ctx);
}

static int usage_argh(const struct option *opts, FILE *outfile)
{