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.test.base;
  
  import com.alibaba.nacos.api.config.ConfigChangeItem;
  import com.alibaba.nacos.api.config.PropertyChangeType;
  import com.alibaba.nacos.api.config.listener.ConfigChangeParser;
  
  import java.io.IOException;
  import java.util.HashMap;
  import java.util.Map;
  
  public class TextChangeParser implements ConfigChangeParser {
      
      @Override
      public boolean isResponsibleFor(String type) {
          return (null == type || "text".equalsIgnoreCase(type));
      }
      
      @Override
      public Map<String, ConfigChangeItem> doParse(String oldContent, String newContent, String type) throws IOException {
          Map<String, ConfigChangeItem> map = new HashMap<>(4);
          final String key = "content";
          
          ConfigChangeItem cci = new ConfigChangeItem(key, oldContent, newContent);
          if (null == oldContent && null != newContent) {
              cci.setType(PropertyChangeType.ADDED);
          } else if (null != oldContent && null != newContent && !oldContent.equals(newContent)) {
              cci.setType(PropertyChangeType.MODIFIED);
          } else if (null != oldContent && null == newContent) {
              cci.setType(PropertyChangeType.DELETED);
          }
          map.put(key, cci);
          
          return map;
      }
  }
  
  