/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

// Package server provides APIs for registering services and starting an RPC server.

package dubboutil

import (
	"unicode"
)

func SwapCaseFirstRune(s string) string {
	if s == "" {
		return s
	}

	// convert str to rune slice
	r := []rune(s)
	if unicode.IsUpper(r[0]) {
		r[0] = unicode.ToLower(r[0])
	} else {
		r[0] = unicode.ToUpper(r[0])
	}
	return string(r)
}
