Function get_modified_files

add-interactive.c:472–536

};

static int get_modified_files(struct repository *r,
			      enum modified_files_filter filter,
			      struct prefix_item_list *files,
			      const struct pathspec *ps,
			      size_t *unmerged_count,
			      size_t *binary_count)
{
	struct object_id head_oid;
	int is_initial = !refs_resolve_ref_unsafe(get_main_ref_store(r),
						  "HEAD", RESOLVE_REF_READING,
						  &head_oid, NULL);
	struct collection_status s = { 0 };
	int i;

	discard_index(r->index);
	if (repo_read_index_preload(r, ps, 0) < 0)
		return error(_("could not read index"));

	prefix_item_list_clear(files);
	s.files = &files->items;
	hashmap_init(&s.file_map, pathname_entry_cmp, NULL, 0);

	for (i = 0; i < 2; i++) {
		struct rev_info rev;
		struct setup_revision_opt opt = { 0 };

		if (filter == INDEX_ONLY)
			s.mode = (i == 0) ? FROM_INDEX : FROM_WORKTREE;
		else
			s.mode = (i == 0) ? FROM_WORKTREE : FROM_INDEX;
		s.skip_unseen = filter && i;

		opt.def = is_initial ?
			empty_tree_oid_hex(r->hash_algo) : oid_to_hex(&head_oid);

		repo_init_revisions(r, &rev, NULL);
		setup_revisions(0, NULL, &rev, &opt);

		rev.diffopt.output_format = DIFF_FORMAT_CALLBACK;
		rev.diffopt.format_callback = collect_changes_cb;
		rev.diffopt.format_callback_data = &s;

		if (ps)
			copy_pathspec(&rev.prune_data, ps);

		if (s.mode == FROM_INDEX)
			run_diff_index(&rev, DIFF_INDEX_CACHED);
		else {
			rev.diffopt.flags.ignore_dirty_submodules = 1;
			run_diff_files(&rev, 0);
		}

		release_revisions(&rev);
	}
	hashmap_clear_and_free(&s.file_map, struct pathname_entry, ent);
	if (unmerged_count)
		*unmerged_count = s.unmerged_count;
	if (binary_count)