content: /**
   * Copyright (C) 2024 AIDC-AI
   *
   * 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.langengine.core.outputparser;
  
  import lombok.Data;
  
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  import java.util.regex.Matcher;
  import java.util.regex.Pattern;
  
  /**
   * Class to parse the output into a dictionary.
   * 将输出解析为字典的类。
   *
   * @author xiaoxuan.lp
   */
  @Data
  public class RegexParser extends BaseOutputParser<Map<String, Object>> {
  
      private String regex;
  
      private List<String> outputKeys;
  
      private String defaultOutputKey;
  
      @Override
      public Map<String, Object> parse(String text) {
          Pattern pattern = Pattern.compile(regex);
          Matcher matcher = pattern.matcher(text);
          Map<String, Object> result = new HashMap<>();
          if(matcher.find()) {
              for(int i = 0; i < outputKeys.size(); i++) {
                  String key = outputKeys.get(i);
                  result.put(key, matcher.group(i + 1));
              }
              return result;
          }
          return result;
      }
  }
  