Function parse_cmd_symref_update

builtin/update-ref.c:342–400

}

static void parse_cmd_symref_update(struct ref_transaction *transaction,
				    const char *next, const char *end UNUSED,
				    struct command_options *opts)
{
	char *refname, *new_target, *old_arg;
	enum ref_transaction_error tx_err;
	char *old_target = NULL;
	struct strbuf err = STRBUF_INIT;
	struct object_id old_oid;
	int have_old_oid = 0;

	refname = parse_refname(&next);
	if (!refname)
		die("symref-update: missing <ref>");

	new_target = parse_next_refname(&next);
	if (!new_target)
		die("symref-update %s: missing <new-target>", refname);

	old_arg = parse_next_arg(&next);
	if (old_arg) {
		old_target = parse_next_arg(&next);
		if (!old_target)
			die("symref-update %s: expected old value", refname);

		if (!strcmp(old_arg, "oid")) {
			if (repo_get_oid_with_flags(the_repository, old_target, &old_oid,
						    GET_OID_SKIP_AMBIGUITY_CHECK))
				die("symref-update %s: invalid oid: %s", refname, old_target);

			have_old_oid = 1;
		} else if (!strcmp(old_arg, "ref")) {
			if (check_refname_format(old_target, REFNAME_ALLOW_ONELEVEL))
				die("symref-update %s: invalid ref: %s", refname, old_target);
		} else {
			die("symref-update %s: invalid arg '%s' for old value", refname, old_arg);
		}
	}

	if (*next != line_termination)
		die("symref-update %s: extra input: %s", refname, next);

	tx_err = ref_transaction_update(transaction, refname, NULL,
					have_old_oid ? &old_oid : NULL,
					new_target,
					have_old_oid ? NULL : old_target,
					update_flags | create_reflog_flag,
					msg, &err);
	handle_ref_transaction_error(refname, NULL, have_old_oid ? &old_oid : NULL,
				     new_target, have_old_oid ? NULL : old_target,
				     tx_err, &err, opts);

	update_flags = default_flags;
	free(refname);
	free(old_arg);
	free(old_target);
	free(new_target);
	strbuf_release(&err);