content: /*
   * Copyright 1999-2018 Alibaba Group Holding Ltd.
   *
   * Licensed 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 com.alibaba.nacos.common.utils;
  
  import java.nio.charset.StandardCharsets;
  
  /**
   * ByteUtils.
   *
   * @author <a href="mailto:liaochuntao@live.com">liaochuntao</a>
   */
  public final class ByteUtils {
  
      private ByteUtils() {
      }
      
      public static final byte[] EMPTY = new byte[0];
      
      /**
       * String to byte array.
       *
       * @param input input string
       * @return byte array of string
       */
      public static byte[] toBytes(String input) {
          if (input == null) {
              return EMPTY;
          }
          return input.getBytes(StandardCharsets.UTF_8);
      }
      
      /**
       * Object to byte array.
       *
       * @param obj input obj
       * @return byte array of object
       */
      public static byte[] toBytes(Object obj) {
          if (obj == null) {
              return EMPTY;
          }
          return toBytes(String.valueOf(obj));
      }
      
      /**
       * Byte array to string.
       *
       * @param bytes byte array
       * @return string
       */
      public static String toString(byte[] bytes) {
          if (bytes == null) {
              return StringUtils.EMPTY;
          }
          return new String(bytes, StandardCharsets.UTF_8);
      }
      
      public static boolean isEmpty(byte[] data) {
          return data == null || data.length == 0;
      }
      
      public static boolean isNotEmpty(byte[] data) {
          return !isEmpty(data);
      }
      
  }
  