Function write_patterns_and_update

builtin/sparse-checkout.c:330–369

}

static int write_patterns_and_update(struct repository *repo,
				     struct pattern_list *pl)
{
	char *sparse_filename;
	FILE *fp;
	struct lock_file lk = LOCK_INIT;
	int result;
	struct repo_config_values *cfg = repo_config_values(the_repository);

	sparse_filename = get_sparse_checkout_filename();

	if (safe_create_leading_directories(repo, sparse_filename))
		die(_("failed to create directory for sparse-checkout file"));

	hold_lock_file_for_update(&lk, sparse_filename, LOCK_DIE_ON_ERROR);

	result = update_working_directory(repo, pl);
	if (result) {
		rollback_lock_file(&lk);
		update_working_directory(repo, NULL);
		goto out;
	}

	fp = fdopen_lock_file(&lk, "w");
	if (!fp)
		die_errno(_("unable to fdopen %s"), get_lock_file_path(&lk));

	if (cfg->core_sparse_checkout_cone)
		write_cone_to_file(fp, pl);
	else
		write_patterns_to_file(fp, pl);

	if (commit_lock_file(&lk))
		die_errno(_("unable to write %s"), sparse_filename);

out:
	clear_pattern_list(pl);
	free(sparse_filename);
	return result;
}

enum sparse_checkout_mode {
	MODE_NO_PATTERNS = 0,