Function parse_refname

builtin/update-ref.c:68–90

* Parse the reference name immediately after "command SP". If not * -z, then handle C-quoting. Return a pointer to a newly allocated * string containing the name of the reference, or NULL if there was * an error. Update *next to point at the character that terminates * the argument. Die if C-quoting is malformed or the reference name * is invalid. */

 * is invalid.
 */
static char *parse_refname(const char **next)
{
	struct strbuf ref = STRBUF_INIT;

	if (line_termination) {
		/* Without -z, use the next argument */
		*next = parse_arg(*next, &ref);
	} else {
		/* With -z, use everything up to the next NUL */
		strbuf_addstr(&ref, *next);
		*next += ref.len;
	}

	if (!ref.len) {
		strbuf_release(&ref);
		return NULL;
	}

	if (check_refname_format(ref.buf, REFNAME_ALLOW_ONELEVEL))
		die("invalid ref format: %s", ref.buf);

	return strbuf_detach(&ref, NULL);
}

/*
 * Wrapper around parse_refname which skips the next delimiter.