Function patch_update_file

add-patch.c:1607–2006

}

static size_t patch_update_file(struct add_p_state *s,
				size_t idx,
				unsigned flags)
{
	size_t hunk_index = 0;
	ssize_t i, undecided_previous, undecided_next, rendered_hunk_index = -1;
	struct hunk *hunk;
	char ch;
	int colored = !!s->colored.len, use_pager = 0;
	enum prompt_mode_type prompt_mode_type;
	int all_decided = 0;
	struct file_diff *file_diff = s->file_diff + idx;
	size_t patch_update_resp = idx;

	/* Empty added files have no hunks */
	if (!file_diff->hunk_nr && !file_diff->added)
		return patch_update_resp + 1;

	strbuf_reset(&s->buf);
	render_diff_header(s, file_diff, colored, &s->buf);
	fputs(s->buf.buf, stdout);
	for (;;) {
		const char *hunk_use_decision = "";
		enum {
			ALLOW_GOTO_PREVIOUS_HUNK = 1 << 0,
			ALLOW_GOTO_PREVIOUS_UNDECIDED_HUNK = 1 << 1,
			ALLOW_GOTO_NEXT_HUNK = 1 << 2,
			ALLOW_GOTO_NEXT_UNDECIDED_HUNK = 1 << 3,
			ALLOW_SEARCH_AND_GOTO = 1 << 4,
			ALLOW_SPLIT = 1 << 5,
			ALLOW_EDIT = 1 << 6,
			ALLOW_GOTO_PREVIOUS_FILE = 1 << 7,
			ALLOW_GOTO_NEXT_FILE = 1 << 8
		} permitted = 0;

		if (hunk_index >= file_diff->hunk_nr)
			hunk_index = 0;
		hunk = file_diff->hunk_nr
				? file_diff->hunk + hunk_index
				: &file_diff->head;
		undecided_previous = -1;
		undecided_next = -1;

		if (file_diff->hunk_nr) {
			for (i = dec_mod(hunk_index, file_diff->hunk_nr);
			     i != hunk_index;
			     i = dec_mod(i, file_diff->hunk_nr))
				if (file_diff->hunk[i].use == UNDECIDED_HUNK) {
					undecided_previous = i;
					break;
				}

			for (i = inc_mod(hunk_index, file_diff->hunk_nr);
			     i != hunk_index;
			     i = inc_mod(i, file_diff->hunk_nr))
				if (file_diff->hunk[i].use == UNDECIDED_HUNK) {
					undecided_next = i;
					break;