content: 
  /*
   * Copyright 2023 Ant Group
   *
   * 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.alipay.antchain.bridge.pluginserver.cli.shell;
  
  public class JsonUtil {
      /**
       * 得到格式化json数据  退格用\t 换行用\r
       */
      public static String format(String jsonStr) {
          int level = 0;
          StringBuffer jsonForMatStr = new StringBuffer();
          for (int i = 0; i < jsonStr.length(); i++) {
              char c = jsonStr.charAt(i);
              if (level > 0 && '\n' == jsonForMatStr.charAt(jsonForMatStr.length() - 1)) {
                  jsonForMatStr.append(getLevelStr(level));
              }
              switch (c) {
                  case '{':
                  case '[':
                      jsonForMatStr.append(c + "\n");
                      level++;
                      break;
                  case ',':
                      jsonForMatStr.append(c + "\n");
                      break;
                  case '}':
                  case ']':
                      jsonForMatStr.append("\n");
                      level--;
                      jsonForMatStr.append(getLevelStr(level));
                      jsonForMatStr.append(c);
                      break;
                  default:
                      jsonForMatStr.append(c);
                      break;
              }
          }
  
          return jsonForMatStr.toString();
  
      }
  
      private static String getLevelStr(int level) {
          StringBuffer levelStr = new StringBuffer();
          for (int levelI = 0; levelI < level; levelI++) {
              levelStr.append("\t");
          }
          return levelStr.toString();
      }
  }
  