Function list_and_choose

add-interactive.c:228–360

* Returns the selected index in singleton mode, the number of selected items * otherwise. * * If an error occurred, returns `LIST_AND_CHOOSE_ERROR`. Upon EOF, * `LIST_AND_CHOOSE_QUIT` is returned. */

 * `LIST_AND_CHOOSE_QUIT` is returned.
 */
static ssize_t list_and_choose(struct add_i_state *s,
			       struct prefix_item_list *items,
			       struct list_and_choose_options *opts)
{
	int singleton = opts->flags & SINGLETON;
	int immediate = opts->flags & IMMEDIATE;

	struct strbuf input = STRBUF_INIT;
	ssize_t res = singleton ? LIST_AND_CHOOSE_ERROR : 0;

	if (!singleton) {
		free(items->selected);
		CALLOC_ARRAY(items->selected, items->items.nr);
	}

	if (singleton && !immediate)
		BUG("singleton requires immediate");

	find_unique_prefixes(items);

	for (;;) {
		char *p;

		strbuf_reset(&input);

		list(s, &items->items, items->selected, &opts->list_opts);

		color_fprintf(stdout, s->cfg.prompt_color, "%s", opts->prompt);
		fputs(singleton ? "> " : ">> ", stdout);
		fflush(stdout);

		if (git_read_line_interactively(&input) == EOF) {
			putchar('\n');
			if (immediate)
				res = LIST_AND_CHOOSE_QUIT;
			break;
		}

		if (!input.len)
			break;

		if (!strcmp(input.buf, "?")) {
			opts->print_help(s);
			continue;
		}

		p = input.buf;
		for (;;) {
			size_t sep = strcspn(p, " \t\r\n,");
			int choose = 1;
			/* `from` is inclusive, `to` is exclusive */
			ssize_t from = -1, to = -1;

			if (!sep) {
				if (!*p)
					break;
				p++;
				continue;