search_news_info

Instructions

参数:
    query (str): 新闻搜索关键词
    
返回:
    str: 新闻搜索结果，包含标题、来源、日期和描述

Implementation Reference

• mcp2brave.py:465-474 (handler)

  The handler function for the "search_news_info" MCP tool. Registered with @mcp.tool() decorator. Defines input schema via function signature and docstring (query: str -> str). Delegates execution to the _do_news_search helper.

  def search_news_info(query: str) -> str:
      """使用Brave新闻API搜索新闻
      
      参数:
          query (str): 新闻搜索关键词
          
      返回:
          str: 新闻搜索结果，包含标题、来源、日期和描述
      """
      return _do_news_search(query)

• mcp2brave.py:356-418 (helper)

  Core helper implementing the news search logic: detects language with _detect_language, calls Brave News API, processes results into formatted list with title, source, date, URL, description.

  def _do_news_search(query: str, country: str = "all", search_lang: str = None) -> str:
      """Internal function to handle news search using Brave News API"""
      try:
          query = query.encode('utf-8').decode('utf-8')
          
          # 如果未指定语言，自动检测
          if search_lang is None:
              search_lang = _detect_language(query)
              logger.debug(f"Detected language: {search_lang} for query: {query}")
          
          url = "https://api.search.brave.com/res/v1/news/search"
          
          headers = {
              "Accept": "application/json",
              "Accept-Encoding": "gzip",
              "X-Subscription-Token": API_KEY
          }
          
          params = {
              "q": query,
              "count": 10,
              "country": country,
              "search_lang": search_lang,
              "spellcheck": 1
          }
          
          logger.debug(f"Searching news for query: {query}")
          response = requests.get(url, headers=headers, params=params)
          response.raise_for_status()
          data = response.json()
          
          # 处理新闻搜索结果
          results = []
          if 'results' in data:
              for news in data['results']:
                  title = news.get('title', 'No title').encode('utf-8').decode('utf-8')
                  url = news.get('url', 'No URL')
                  description = news.get('description', 'No description').encode('utf-8').decode('utf-8')
                  date = news.get('published_time', 'Unknown date')
                  source = news.get('source', {}).get('name', 'Unknown source')
                  
                  news_item = [
                      f"- {title}",
                      f"  Source: {source}",
                      f"  Date: {date}",
                      f"  URL: {url}",
                      f"  Description: {description}\n"
                  ]
                  results.append("\n".join(news_item))
          
          if not results:
              return "No news found for your query."
              
          return "News Results:\n\n" + "\n".join(results)
          
      except requests.exceptions.RequestException as e:
          logger.error(f"News API request error: {str(e)}")
          return f"Error searching news: {str(e)}"
      except Exception as e:
          logger.error(f"News search error: {str(e)}")
          logger.exception("Detailed error trace:")
          return f"Error searching news: {str(e)}"
  @mcp.tool()

• mcp2brave.py:70-135 (helper)

  Supporting helper for language detection used in news search to set search_lang parameter automatically.

  def _detect_language(text: str) -> str:
      """检测文本语言并返回对应的语言代码"""
      # 定义语言检测规则
      LANGUAGE_PATTERNS = {
          # 中文 (简体和繁体)
          'zh-hans': ('\u4e00', '\u9fff'),  # 简体中文
          'zh-hant': ('\u4e00', '\u9fff'),  # 繁体中文
          # 日文
          'jp': ('\u3040', '\u309f', '\u30a0', '\u30ff'),  # 平假名和片假名
          # 韩文
          'ko': ('\uac00', '\ud7af'),  # 谚文
          # 俄文
          'ru': ('\u0400', '\u04ff'),  # 西里尔字母
          # 阿拉伯文
          'ar': ('\u0600', '\u06ff'),
          # 希伯来文
          'he': ('\u0590', '\u05ff'),
          # 泰文
          'th': ('\u0e00', '\u0e7f'),
          # 越南文 (使用扩展拉丁字母)
          'vi': ('àáạảãâầấậẩẫăằắặẳẵèéẹẻẽêềếệểễìíịỉĩòóọỏõôồốộổỗơờớợởỡùúụủũưừứựửữỳýỵỷỹđ'),
          # 印地文
          'hi': ('\u0900', '\u097f'),
          # 泰米尔文
          'ta': ('\u0b80', '\u0bff'),
          # 特卢固文
          'te': ('\u0c00', '\u0c7f'),
      }
  
      def contains_chars_in_range(text, *ranges):
          """检查文本是否包含指定Unicode范围内的字符"""
          if len(ranges) % 2 == 0:  # 范围对
              for i in range(0, len(ranges), 2):
                  start, end = ranges[i:i+2]
                  if any(start <= char <= end for char in text):
                      return True
          else:  # 字符列表
              return any(char in ranges[0] for char in text)
          return False
  
      # 检测常见的非拉丁文字系统
      for lang, pattern in LANGUAGE_PATTERNS.items():
          if contains_chars_in_range(text, *pattern):
              # 对中文进行简繁体识别（这里使用简单规则，实际应用可能需要更复杂的逻辑）
              if lang in ['zh-hans', 'zh-hant']:
                  # 这里可以添加更复杂的简繁体识别逻辑
                  return 'zh-hans'  # 默认返回简体中文
              return lang
  
      # 检测拉丁字母语言（简单示例）
      # 注意：这是一个非常简化的实现，实际应用可能需要更复杂的语言检测
      LATIN_PATTERNS = {
          'es': ['ñ', 'á', 'é', 'í', 'ó', 'ú', '¿', '¡'],
          'fr': ['é', 'è', 'ê', 'à', 'ç', 'ù', 'û', 'ï'],
          'de': ['ä', 'ö', 'ü', 'ß'],
          'pt-pt': ['ã', 'õ', 'á', 'é', 'í', 'ó', 'ú', 'â', 'ê', 'ô'],
          'it': ['à', 'è', 'é', 'ì', 'ò', 'ó', 'ù'],
      }
  
      for lang, patterns in LATIN_PATTERNS.items():
          if any(pattern in text.lower() for pattern in patterns):
              return lang
  
      # 默认返回英语
      return "en"