Files
lyxy-document/scripts/utils/file_detection.py
lanyuanxiaoyao e0c6ed1638 feat: 新增 .doc 格式支持,借助 LibreOffice soffice
- 提取 LibreOffice 解析逻辑为公共工具函数 _utils.parse_via_libreoffice()
- 新增 DocReader 独立 Reader,支持 .doc 格式
- 新增 is_valid_doc() 文件验证函数(复用 OLE2 检测)
- 新增 doc 格式依赖配置(独立配置)
- 新增完整的测试套件,使用静态测试文件
- 更新 README.md 和 SKILL.md,添加 .doc 格式支持说明
- 新增 openspec/specs/doc-reader/spec.md 规范文档

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-16 10:40:43 +08:00

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"""文件类型检测模块,用于验证和检测输入文件类型。"""
import os
import zipfile
from typing import List, Optional
def _is_valid_ole(file_path: str) -> bool:
"""验证 OLE2 格式文件XLS/DOC"""
try:
import olefile
except ImportError:
# 如果 olefile 未安装,就不做严格验证
return True
try:
return olefile.isOleFile(file_path)
except Exception:
return False
def _is_valid_ooxml(file_path: str, required_files: List[str]) -> bool:
"""验证 OOXML 格式文件DOCX/PPTX/XLSX"""
try:
with zipfile.ZipFile(file_path, "r") as zip_file:
names = set(zip_file.namelist())
return all(r in names for r in required_files)
except (zipfile.BadZipFile, zipfile.LargeZipFile):
return False
_DOCX_REQUIRED = ["[Content_Types].xml", "_rels/.rels", "word/document.xml"]
_PPTX_REQUIRED = ["[Content_Types].xml", "_rels/.rels", "ppt/presentation.xml"]
_XLSX_REQUIRED = ["[Content_Types].xml", "_rels/.rels", "xl/workbook.xml"]
def is_valid_docx(file_path: str) -> bool:
"""验证文件是否为有效的 DOCX 格式"""
return _is_valid_ooxml(file_path, _DOCX_REQUIRED)
def is_valid_pptx(file_path: str) -> bool:
"""验证文件是否为有效的 PPTX 格式"""
return _is_valid_ooxml(file_path, _PPTX_REQUIRED)
def is_valid_xlsx(file_path: str) -> bool:
"""验证文件是否为有效的 XLSX 格式"""
return _is_valid_ooxml(file_path, _XLSX_REQUIRED)
def is_valid_xls(file_path: str) -> bool:
"""验证文件是否为有效的 XLS 格式"""
return _is_valid_ole(file_path)
def is_valid_doc(file_path: str) -> bool:
"""验证文件是否为有效的 DOC 格式OLE2"""
return _is_valid_ole(file_path)
def is_valid_pdf(file_path: str) -> bool:
"""验证文件是否为有效的 PDF 格式"""
try:
with open(file_path, "rb") as f:
header = f.read(4)
return header == b"%PDF"
except (IOError, OSError):
return False
def is_html_file(file_path: str) -> bool:
"""判断文件是否为 HTML 文件(仅检查扩展名)"""
ext = file_path.lower()
return ext.endswith(".html") or ext.endswith(".htm")
def is_url(input_str: str) -> bool:
"""判断输入是否为 URL"""
return input_str.startswith("http://") or input_str.startswith("https://")