增加docling作为解析器

temp/scripts/common.py

@@ -27,6 +27,24 @@ def parse_with_markitdown(
         return None, f"MarkItDown 解析失败: {str(e)}"
 
 
+def parse_with_docling(file_path: str) -> Tuple[Optional[str], Optional[str]]:
+    """使用 docling 库解析文件"""
+    try:
+        from docling.document_converter import DocumentConverter
+    except ImportError:
+        return None, "docling 库未安装"
+
+    try:
+        converter = DocumentConverter()
+        result = converter.convert(file_path)
+        markdown_content = result.document.export_to_markdown()
+        if not markdown_content.strip():
+            return None, "文档为空"
+        return markdown_content, None
+    except Exception as e:
+        return None, f"docling 解析失败: {str(e)}"
+
+
 def build_markdown_table(rows_data: List[List[str]]) -> str:
     """将二维列表转换为 Markdown 表格格式"""
     if not rows_data or not rows_data[0]: