990 lines
35 KiB
Python
990 lines
35 KiB
Python
#!/usr/bin/env python3
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"""整合的文档解析器，支持 DOCX 和 PPTX 文件：
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按优先级尝试多种解析方法：
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1. MarkItDown (微软官方库)
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2. python-docx 或 python-pptx (成熟的 Python 库)
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3. XML 原生解析 (备选方案)
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代码风格要求：
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- Python 3.6+ 兼容
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- 遵循 PEP 8 规范
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- 所有公共 API 函数添加类型提示
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- 字符串优先内联使用，不提取为常量，除非被使用超过3次
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- 其他被多次使用的对象根据具体情况可考虑被提取为常量（如正则表达式）
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- 模块级和公共 API 函数保留文档字符串
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- 内部辅助函数不添加文档字符串（函数名足够描述）
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- 变量命名清晰，避免单字母变量名
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"""
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import argparse
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import os
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import re
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import sys
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import zipfile
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import xml.etree.ElementTree as ET
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from typing import Any, List, Optional, Tuple
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IMAGE_PATTERN = re.compile(r"!\[[^\]]*\]\([^)]+\)")
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MEDIA_LINK_PATTERN = re.compile(
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r'^\[.*?\]\(.*\.(png|jpg|jpeg|gif|mp4|avi|mov|pdf)\s*["\']?.*?["\']?\)$'
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)
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RGB_COLOR_PATTERN = re.compile(r"^R:\d+\s+G:\d+\s+B:\d+$")
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def build_markdown_table(rows_data: List[List[str]]) -> str:
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"""将二维列表转换为 Markdown 表格格式"""
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if not rows_data or not rows_data[0]:
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return ""
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md_lines = []
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for i, row_data in enumerate(rows_data):
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row_text = [cell if cell else "" for cell in row_data]
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md_lines.append("| " + " | ".join(row_text) + " |")
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if i == 0:
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md_lines.append("|" + " | ".join(["---"] * len(row_text)) + " |")
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return "\n".join(md_lines) + "\n\n"
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def flush_list_stack(list_stack: List[str], target: List[str]) -> None:
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"""将列表堆栈中的非空项添加到目标列表并清空堆栈"""
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for item in list_stack:
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if item:
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target.append(item + "\n")
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list_stack.clear()
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def safe_open_zip(zip_file: zipfile.ZipFile, name: str) -> Optional[zipfile.ZipExtFile]:
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"""安全地从 ZipFile 中打开文件，防止路径遍历攻击"""
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if not name:
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return None
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if name.startswith("/") or name.startswith("\\"):
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return None
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if name.startswith(".."):
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return None
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if "/../" in name or name.endswith("/.."):
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return None
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if "\\" in name:
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return None
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if "/" not in name:
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return None
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return zip_file.open(name)
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def normalize_markdown_whitespace(content: str) -> str:
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lines = content.split("\n")
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result = []
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empty_count = 0
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for line in lines:
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stripped = line.strip()
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if not stripped:
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empty_count += 1
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if empty_count == 1:
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result.append(line)
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else:
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empty_count = 0
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result.append(line)
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return "\n".join(result)
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def is_valid_docx(file_path: str) -> bool:
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try:
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with zipfile.ZipFile(file_path, "r") as zip_file:
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required_files = ["[Content_Types].xml", "_rels/.rels", "word/document.xml"]
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for required in required_files:
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if required not in zip_file.namelist():
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return False
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return True
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except (zipfile.BadZipFile, zipfile.LargeZipFile):
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return False
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def is_valid_pptx(file_path: str) -> bool:
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try:
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with zipfile.ZipFile(file_path, "r") as zip_file:
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required_files = [
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"[Content_Types].xml",
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"_rels/.rels",
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"ppt/presentation.xml",
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]
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for required in required_files:
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if required not in zip_file.namelist():
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return False
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return True
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except (zipfile.BadZipFile, zipfile.LargeZipFile):
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return False
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def remove_markdown_images(markdown_text: str) -> str:
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return IMAGE_PATTERN.sub("", markdown_text)
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def filter_markdown_content(content: str) -> str:
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"""过滤 markdown 内容，保留文本、表格、列表和基本格式"""
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lines = content.split("\n")
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filtered_lines = []
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for line in lines:
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stripped = line.strip()
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if not stripped:
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continue
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if stripped.startswith("<!--") and stripped.endswith("-->"):
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continue
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if stripped.startswith("![") or stripped.startswith("![]"):
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continue
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if "<img" in stripped or "</img>" in stripped:
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continue
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if MEDIA_LINK_PATTERN.match(stripped):
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continue
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if RGB_COLOR_PATTERN.match(stripped):
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continue
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line = re.sub(r'<span[^>]*style="[^"]*"[^>]*>(.*?)</span>', r"\1", line)
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line = re.sub(r"<span[^>]*>(.*?)</span>", r"\1", line)
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line = re.sub(r"\s+", " ", line).strip()
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if line:
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filtered_lines.append(line)
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return "\n".join(filtered_lines)
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def extract_titles(markdown_text: str) -> List[str]:
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"""提取 markdown 文本中的所有标题行（1-6级）"""
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title_lines = []
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for line in markdown_text.split("\n"):
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if get_heading_level(line) > 0:
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title_lines.append(line.lstrip())
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return title_lines
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def get_heading_level(line: str) -> int:
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stripped = line.lstrip()
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if not stripped.startswith("#"):
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return 0
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level = 0
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for char in stripped:
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if char == "#":
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level += 1
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else:
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break
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return level if 1 <= level <= 6 else 0
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def extract_title_content(markdown_text: str, title_name: str) -> Optional[str]:
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"""提取所有指定标题及其下级内容（每个包含上级标题）"""
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lines = markdown_text.split("\n")
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match_indices = []
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for i, line in enumerate(lines):
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level = get_heading_level(line)
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if level > 0:
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stripped = line.lstrip()
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title_text = stripped[level:].strip()
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if title_text == title_name:
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match_indices.append(i)
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if not match_indices:
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return None
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result_lines = []
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for idx in match_indices:
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target_level = get_heading_level(lines[idx])
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parent_titles = []
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current_level = target_level
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for i in range(idx - 1, -1, -1):
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line_level = get_heading_level(lines[i])
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if line_level > 0 and line_level < current_level:
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parent_titles.append(lines[i])
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current_level = line_level
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if current_level == 1:
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break
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parent_titles.reverse()
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result_lines.extend(parent_titles)
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result_lines.append(lines[idx])
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for i in range(idx + 1, len(lines)):
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line = lines[i]
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line_level = get_heading_level(line)
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if line_level == 0 or line_level > target_level:
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result_lines.append(line)
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else:
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break
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return "\n".join(result_lines)
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def search_markdown(
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content: str, pattern: str, context_lines: int = 0
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) -> Optional[str]:
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"""使用正则表达式搜索 markdown 文档，返回匹配结果及其上下文"""
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try:
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regex = re.compile(pattern)
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except re.error:
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return None
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lines = content.split("\n")
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non_empty_indices = []
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non_empty_to_original = {}
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for i, line in enumerate(lines):
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if line.strip():
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non_empty_indices.append(i)
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non_empty_to_original[i] = len(non_empty_indices) - 1
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matched_non_empty_indices = []
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for orig_idx in non_empty_indices:
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if regex.search(lines[orig_idx]):
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matched_non_empty_indices.append(non_empty_to_original[orig_idx])
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if not matched_non_empty_indices:
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return None
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merged_ranges = []
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current_start = matched_non_empty_indices[0]
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current_end = matched_non_empty_indices[0]
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for idx in matched_non_empty_indices[1:]:
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if idx - current_end <= context_lines * 2:
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current_end = idx
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else:
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merged_ranges.append((current_start, current_end))
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current_start = idx
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current_end = idx
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merged_ranges.append((current_start, current_end))
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results = []
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for start, end in merged_ranges:
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context_start_idx = max(0, start - context_lines)
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context_end_idx = min(len(non_empty_indices) - 1, end + context_lines)
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start_line_idx = non_empty_indices[context_start_idx]
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end_line_idx = non_empty_indices[context_end_idx]
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selected_indices = set(
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non_empty_indices[context_start_idx : context_end_idx + 1]
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)
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result_lines = [
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line
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for i, line in enumerate(lines)
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if start_line_idx <= i <= end_line_idx
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and (line.strip() or i in selected_indices)
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]
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results.append("\n".join(result_lines))
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return "\n---\n".join(results)
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def parse_docx_with_markitdown(file_path: str) -> Tuple[Optional[str], Optional[str]]:
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try:
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from markitdown import MarkItDown
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md = MarkItDown()
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result = md.convert(file_path)
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if not result.text_content.strip():
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return None, "文档为空"
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return result.text_content, None
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except ImportError:
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return None, "MarkItDown 库未安装"
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except Exception as e:
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return None, f"MarkItDown 解析失败: {str(e)}"
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def parse_docx_with_python_docx(file_path: str) -> Tuple[Optional[str], Optional[str]]:
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try:
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from docx import Document
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except ImportError:
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return None, "python-docx 库未安装"
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try:
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doc = Document(file_path)
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def get_heading_level(para: Any) -> int:
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if para.style and para.style.name:
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style_name = para.style.name
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if "Heading 1" in style_name or "Title" in style_name:
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return 1
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elif "Heading 2" in style_name:
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return 2
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elif "Heading 3" in style_name:
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return 3
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elif "Heading 4" in style_name:
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return 4
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elif "Heading 5" in style_name:
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return 5
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elif "Heading 6" in style_name:
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return 6
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return 0
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def get_list_style(para: Any) -> Optional[str]:
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if not para.style or not para.style.name:
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return None
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style_name = para.style.name
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if style_name.startswith("List Bullet") or style_name == "Bullet":
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return "bullet"
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elif style_name.startswith("List Number") or style_name == "Number":
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return "number"
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return None
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def convert_runs_to_markdown(runs: List[Any]) -> str:
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result = []
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for run in runs:
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text = run.text
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if not text:
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continue
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if run.bold:
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text = f"**{text}**"
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if run.italic:
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text = f"*{text}*"
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if run.underline:
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text = f"<u>{text}</u>"
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result.append(text)
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return "".join(result)
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def convert_table_to_markdown(table: Any) -> str:
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rows_data = []
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for row in table.rows:
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row_data = []
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for cell in row.cells:
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cell_text = cell.text.strip().replace("\n", " ")
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row_data.append(cell_text)
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rows_data.append(row_data)
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return build_markdown_table(rows_data)
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markdown_lines = []
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prev_was_list = False
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for para in doc.paragraphs:
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text = convert_runs_to_markdown(para.runs)
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if not text.strip():
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continue
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heading_level = get_heading_level(para)
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if heading_level > 0:
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markdown_lines.append(f"{'#' * heading_level} {text}")
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prev_was_list = False
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else:
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list_style = get_list_style(para)
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if list_style == "bullet":
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if not prev_was_list and markdown_lines:
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markdown_lines.append("")
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markdown_lines.append(f"- {text}")
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prev_was_list = True
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elif list_style == "number":
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if not prev_was_list and markdown_lines:
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markdown_lines.append("")
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markdown_lines.append(f"1. {text}")
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prev_was_list = True
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else:
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if prev_was_list and markdown_lines:
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markdown_lines.append("")
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markdown_lines.append(text)
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markdown_lines.append("")
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prev_was_list = False
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for table in doc.tables:
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table_md = convert_table_to_markdown(table)
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markdown_lines.append(table_md)
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markdown_lines.append("")
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content = "\n".join(markdown_lines)
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if not content.strip():
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return None, "文档为空"
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return content, None
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except Exception as e:
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return None, f"python-docx 解析失败: {str(e)}"
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def parse_docx_with_xml(file_path: str) -> Tuple[Optional[str], Optional[str]]:
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word_namespace = "http://schemas.openxmlformats.org/wordprocessingml/2006/main"
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namespaces = {"w": word_namespace}
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def get_heading_level(style_id: Optional[str], style_to_level: dict) -> int:
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return style_to_level.get(style_id, 0)
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def get_list_style(style_id: Optional[str], style_to_list: dict) -> Optional[str]:
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return style_to_list.get(style_id, None)
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def extract_text_with_formatting(para: Any, namespaces: dict) -> str:
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texts = []
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for run in para.findall(".//w:r", namespaces=namespaces):
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text_elem = run.find(".//w:t", namespaces=namespaces)
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if text_elem is not None and text_elem.text:
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text = text_elem.text
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bold = run.find(".//w:b", namespaces=namespaces) is not None
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italic = run.find(".//w:i", namespaces=namespaces) is not None
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if bold:
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text = f"**{text}**"
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if italic:
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text = f"*{text}*"
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texts.append(text)
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return "".join(texts).strip()
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def convert_table_to_markdown(table_elem: Any, namespaces: dict) -> str:
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rows = table_elem.findall(".//w:tr", namespaces=namespaces)
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if not rows:
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return ""
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md_lines = []
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for i, row in enumerate(rows):
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cells = row.findall(".//w:tc", namespaces=namespaces)
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cell_texts = []
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for cell in cells:
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cell_text = extract_text_with_formatting(cell, namespaces)
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cell_text = cell_text.replace("\n", " ").strip()
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cell_texts.append(cell_text if cell_text else "")
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if cell_texts:
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md_line = "| " + " | ".join(cell_texts) + " |"
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md_lines.append(md_line)
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if i == 0:
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sep_line = "| " + " | ".join(["---"] * len(cell_texts)) + " |"
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md_lines.append(sep_line)
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return "\n".join(md_lines)
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try:
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style_to_level = {}
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style_to_list = {}
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markdown_lines = []
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with zipfile.ZipFile(file_path) as zip_file:
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try:
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styles_file = safe_open_zip(zip_file, "word/styles.xml")
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if styles_file:
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styles_root = ET.parse(styles_file).getroot()
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for style in styles_root.findall(
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".//w:style", namespaces=namespaces
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):
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style_id = style.get(f"{{{word_namespace}}}styleId")
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style_name_elem = style.find("w:name", namespaces=namespaces)
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if style_id and style_name_elem is not None:
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style_name = style_name_elem.get(f"{{{word_namespace}}}val")
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if style_name:
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if style_name == "Title":
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style_to_level[style_id] = 1
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elif style_name == "heading 1":
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style_to_level[style_id] = 1
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elif style_name == "heading 2":
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style_to_level[style_id] = 2
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elif style_name == "heading 3":
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style_to_level[style_id] = 3
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elif style_name == "heading 4":
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style_to_level[style_id] = 4
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elif style_name == "heading 5":
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style_to_level[style_id] = 5
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elif style_name == "heading 6":
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style_to_level[style_id] = 6
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elif (
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style_name.startswith("List Bullet")
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or style_name == "Bullet"
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):
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style_to_list[style_id] = "bullet"
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elif (
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style_name.startswith("List Number")
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or style_name == "Number"
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):
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style_to_list[style_id] = "number"
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except Exception:
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pass
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document_file = safe_open_zip(zip_file, "word/document.xml")
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if not document_file:
|
||
return None, "document.xml 不存在或无法访问"
|
||
|
||
root = ET.parse(document_file).getroot()
|
||
body = root.find(".//w:body", namespaces=namespaces)
|
||
if body is None:
|
||
return None, "document.xml 中未找到 w:body 元素"
|
||
|
||
for child in body.findall("./*", namespaces=namespaces):
|
||
if child.tag.endswith("}p"):
|
||
style_elem = child.find(".//w:pStyle", namespaces=namespaces)
|
||
style_id = (
|
||
style_elem.get(f"{{{word_namespace}}}val")
|
||
if style_elem is not None
|
||
else None
|
||
)
|
||
|
||
heading_level = get_heading_level(style_id, style_to_level)
|
||
list_style = get_list_style(style_id, style_to_list)
|
||
para_text = extract_text_with_formatting(child, namespaces)
|
||
|
||
if para_text:
|
||
if heading_level > 0:
|
||
markdown_lines.append(f"{'#' * heading_level} {para_text}")
|
||
elif list_style == "bullet":
|
||
markdown_lines.append(f"- {para_text}")
|
||
elif list_style == "number":
|
||
markdown_lines.append(f"1. {para_text}")
|
||
else:
|
||
markdown_lines.append(para_text)
|
||
markdown_lines.append("")
|
||
|
||
elif child.tag.endswith("}tbl"):
|
||
table_md = convert_table_to_markdown(child, namespaces)
|
||
if table_md:
|
||
markdown_lines.append(table_md)
|
||
markdown_lines.append("")
|
||
|
||
content = "\n".join(markdown_lines)
|
||
if not content.strip():
|
||
return None, "文档为空"
|
||
return content, None
|
||
except Exception as e:
|
||
return None, f"XML 解析失败: {str(e)}"
|
||
|
||
|
||
def parse_pptx_with_markitdown(file_path: str) -> Tuple[Optional[str], Optional[str]]:
|
||
try:
|
||
from markitdown import MarkItDown
|
||
|
||
md = MarkItDown()
|
||
result = md.convert(file_path)
|
||
if not result.text_content.strip():
|
||
return None, "文档为空"
|
||
|
||
filtered_content = filter_markdown_content(result.text_content)
|
||
if not filtered_content.strip():
|
||
return None, "过滤后文档为空"
|
||
|
||
return filtered_content, None
|
||
except ImportError:
|
||
return None, "MarkItDown 库未安装"
|
||
except Exception as e:
|
||
return None, f"MarkItDown 解析失败: {str(e)}"
|
||
|
||
|
||
def extract_formatted_text_pptx(runs: List[Any]) -> str:
|
||
result = []
|
||
for run in runs:
|
||
if not run.text:
|
||
continue
|
||
|
||
text = run.text
|
||
|
||
font = run.font
|
||
is_bold = getattr(font, "bold", False) or False
|
||
is_italic = getattr(font, "italic", False) or False
|
||
|
||
if is_bold and is_italic:
|
||
text = f"***{text}***"
|
||
elif is_bold:
|
||
text = f"**{text}**"
|
||
elif is_italic:
|
||
text = f"*{text}*"
|
||
|
||
result.append(text)
|
||
|
||
return "".join(result).strip()
|
||
|
||
|
||
def convert_table_to_md_pptx(table: Any) -> str:
|
||
rows_data = []
|
||
for row in table.rows:
|
||
row_data = []
|
||
for cell in row.cells:
|
||
cell_content = []
|
||
for para in cell.text_frame.paragraphs:
|
||
text = extract_formatted_text_pptx(para.runs)
|
||
if text:
|
||
cell_content.append(text)
|
||
cell_text = " ".join(cell_content).strip()
|
||
row_data.append(cell_text if cell_text else "")
|
||
rows_data.append(row_data)
|
||
return build_markdown_table(rows_data)
|
||
|
||
|
||
def parse_pptx_with_python_pptx(file_path: str) -> Tuple[Optional[str], Optional[str]]:
|
||
try:
|
||
from pptx import Presentation
|
||
from pptx.enum.shapes import MSO_SHAPE_TYPE
|
||
except ImportError:
|
||
return None, "python-pptx 库未安装"
|
||
|
||
try:
|
||
prs = Presentation(file_path)
|
||
md_content = []
|
||
|
||
for slide_num, slide in enumerate(prs.slides, 1):
|
||
md_content.append(f"\n## Slide {slide_num}\n")
|
||
|
||
list_stack = []
|
||
|
||
for shape in slide.shapes:
|
||
if shape.shape_type == MSO_SHAPE_TYPE.PICTURE:
|
||
continue
|
||
|
||
if hasattr(shape, "has_table") and shape.has_table:
|
||
if list_stack:
|
||
md_content.append(
|
||
"\n" + "\n".join([x for x in list_stack if x]) + "\n"
|
||
)
|
||
list_stack.clear()
|
||
|
||
table_md = convert_table_to_md_pptx(shape.table)
|
||
md_content.append(table_md)
|
||
|
||
if hasattr(shape, "text_frame"):
|
||
for para in shape.text_frame.paragraphs:
|
||
pPr = para._element.pPr
|
||
is_list = False
|
||
if pPr is not None:
|
||
is_list = (
|
||
para.level > 0
|
||
or pPr.find(
|
||
".//a:buChar",
|
||
namespaces={
|
||
"a": "http://schemas.openxmlformats.org/drawingml/2006/main"
|
||
},
|
||
)
|
||
is not None
|
||
or pPr.find(
|
||
".//a:buAutoNum",
|
||
namespaces={
|
||
"a": "http://schemas.openxmlformats.org/drawingml/2006/main"
|
||
},
|
||
)
|
||
is not None
|
||
)
|
||
|
||
if is_list:
|
||
level = para.level
|
||
|
||
while len(list_stack) <= level:
|
||
list_stack.append("")
|
||
|
||
text = extract_formatted_text_pptx(para.runs)
|
||
if text:
|
||
pPr = para._element.pPr
|
||
is_ordered = (
|
||
pPr is not None
|
||
and pPr.find(
|
||
".//a:buAutoNum",
|
||
namespaces={
|
||
"a": "http://schemas.openxmlformats.org/drawingml/2006/main"
|
||
},
|
||
)
|
||
is not None
|
||
)
|
||
marker = "1. " if is_ordered else "- "
|
||
indent = " " * level
|
||
list_stack[level] = f"{indent}{marker}{text}"
|
||
|
||
for i in range(len(list_stack)):
|
||
if list_stack[i]:
|
||
md_content.append(list_stack[i] + "\n")
|
||
list_stack[i] = ""
|
||
else:
|
||
if list_stack:
|
||
md_content.append(
|
||
"\n"
|
||
+ "\n".join([x for x in list_stack if x])
|
||
+ "\n"
|
||
)
|
||
list_stack.clear()
|
||
|
||
text = extract_formatted_text_pptx(para.runs)
|
||
if text:
|
||
md_content.append(f"{text}\n")
|
||
|
||
if list_stack:
|
||
md_content.append("\n" + "\n".join([x for x in list_stack if x]) + "\n")
|
||
list_stack.clear()
|
||
|
||
md_content.append("---\n")
|
||
|
||
content = "\n".join(md_content)
|
||
if not content.strip():
|
||
return None, "文档为空"
|
||
return content, None
|
||
except Exception as e:
|
||
return None, f"python-pptx 解析失败: {str(e)}"
|
||
|
||
|
||
def parse_pptx_with_xml(file_path: str) -> Tuple[Optional[str], Optional[str]]:
|
||
pptx_namespace = {
|
||
"a": "http://schemas.openxmlformats.org/drawingml/2006/main",
|
||
"p": "http://schemas.openxmlformats.org/presentationml/2006/main",
|
||
"r": "http://schemas.openxmlformats.org/officeDocument/2006/relationships",
|
||
}
|
||
|
||
def extract_text_with_formatting_xml(text_elem: Any, namespaces: dict) -> str:
|
||
result = []
|
||
runs = text_elem.findall(".//a:r", namespaces=namespaces)
|
||
for run in runs:
|
||
t_elem = run.find(".//a:t", namespaces=namespaces)
|
||
if t_elem is None or not t_elem.text:
|
||
continue
|
||
|
||
text = t_elem.text
|
||
|
||
rPr = run.find(".//a:rPr", namespaces=namespaces)
|
||
is_bold = False
|
||
is_italic = False
|
||
|
||
if rPr is not None:
|
||
is_bold = rPr.find(".//a:b", namespaces=namespaces) is not None
|
||
is_italic = rPr.find(".//a:i", namespaces=namespaces) is not None
|
||
|
||
if is_bold and is_italic:
|
||
text = f"***{text}***"
|
||
elif is_bold:
|
||
text = f"**{text}**"
|
||
elif is_italic:
|
||
text = f"*{text}*"
|
||
|
||
result.append(text)
|
||
|
||
return "".join(result).strip() if result else ""
|
||
|
||
def convert_table_to_md_xml(table_elem: Any, namespaces: dict) -> str:
|
||
rows = table_elem.findall(".//a:tr", namespaces=namespaces)
|
||
if not rows:
|
||
return ""
|
||
|
||
rows_data = []
|
||
for row in rows:
|
||
cells = row.findall(".//a:tc", namespaces=namespaces)
|
||
row_data = []
|
||
for cell in cells:
|
||
cell_text = extract_text_with_formatting_xml(cell, namespaces)
|
||
if cell_text:
|
||
cell_text = cell_text.replace("\n", " ").replace("\r", " ")
|
||
row_data.append(cell_text if cell_text else "")
|
||
rows_data.append(row_data)
|
||
return build_markdown_table(rows_data)
|
||
|
||
def is_list_item_xml(p_elem: Any, namespaces: dict) -> Tuple[bool, bool]:
|
||
if p_elem is None:
|
||
return False, False
|
||
|
||
pPr = p_elem.find(".//a:pPr", namespaces=namespaces)
|
||
if pPr is None:
|
||
return False, False
|
||
|
||
buChar = pPr.find(".//a:buChar", namespaces=namespaces)
|
||
if buChar is not None:
|
||
return True, False
|
||
|
||
buAutoNum = pPr.find(".//a:buAutoNum", namespaces=namespaces)
|
||
if buAutoNum is not None:
|
||
return True, True
|
||
|
||
return False, False
|
||
|
||
def get_indent_level_xml(p_elem: Any, namespaces: dict) -> int:
|
||
if p_elem is None:
|
||
return 0
|
||
|
||
pPr = p_elem.find(".//a:pPr", namespaces=namespaces)
|
||
if pPr is None:
|
||
return 0
|
||
|
||
lvl = pPr.get("lvl")
|
||
return int(lvl) if lvl else 0
|
||
|
||
try:
|
||
md_content = []
|
||
|
||
with zipfile.ZipFile(file_path) as zip_file:
|
||
slide_files = [
|
||
f
|
||
for f in zip_file.namelist()
|
||
if re.match(r"ppt/slides/slide\d+\.xml$", f)
|
||
]
|
||
|
||
for slide_idx, slide_file in enumerate(slide_files, 1):
|
||
md_content.append("\n## Slide {}\n".format(slide_idx))
|
||
|
||
with zip_file.open(slide_file) as slide_xml:
|
||
slide_root = ET.parse(slide_xml).getroot()
|
||
|
||
tx_bodies = slide_root.findall(
|
||
".//p:sp/p:txBody", namespaces=pptx_namespace
|
||
)
|
||
|
||
tables = slide_root.findall(".//a:tbl", namespaces=pptx_namespace)
|
||
for table in tables:
|
||
table_md = convert_table_to_md_xml(table, pptx_namespace)
|
||
if table_md:
|
||
md_content.append(table_md)
|
||
|
||
for tx_body in tx_bodies:
|
||
paragraphs = tx_body.findall(
|
||
".//a:p", namespaces=pptx_namespace
|
||
)
|
||
list_stack = []
|
||
|
||
for para in paragraphs:
|
||
is_list, is_ordered = is_list_item_xml(para, pptx_namespace)
|
||
|
||
if is_list:
|
||
level = get_indent_level_xml(para, pptx_namespace)
|
||
|
||
while len(list_stack) <= level:
|
||
list_stack.append("")
|
||
|
||
text = extract_text_with_formatting_xml(
|
||
para, pptx_namespace
|
||
)
|
||
if text:
|
||
marker = "1. " if is_ordered else "- "
|
||
indent = " " * level
|
||
list_stack[level] = f"{indent}{marker}{text}"
|
||
|
||
for i in range(len(list_stack)):
|
||
if list_stack[i]:
|
||
md_content.append(list_stack[i] + "\n")
|
||
list_stack[i] = ""
|
||
else:
|
||
if list_stack:
|
||
flush_list_stack(list_stack, md_content)
|
||
|
||
text = extract_text_with_formatting_xml(
|
||
para, pptx_namespace
|
||
)
|
||
if text:
|
||
md_content.append(f"{text}\n")
|
||
|
||
if list_stack:
|
||
flush_list_stack(list_stack, md_content)
|
||
|
||
md_content.append("---\n")
|
||
|
||
content = "\n".join(md_content)
|
||
if not content.strip():
|
||
return None, "文档为空"
|
||
return content, None
|
||
except Exception as e:
|
||
return None, f"XML 解析失败: {str(e)}"
|
||
|
||
|
||
def detect_file_type(file_path: str) -> Optional[str]:
|
||
"""检测文件类型，返回 'docx' 或 'pptx'"""
|
||
_, ext = os.path.splitext(file_path)
|
||
ext = ext.lower()
|
||
|
||
if ext == ".docx":
|
||
if is_valid_docx(file_path):
|
||
return "docx"
|
||
elif ext == ".pptx":
|
||
if is_valid_pptx(file_path):
|
||
return "pptx"
|
||
|
||
return None
|
||
|
||
|
||
def main() -> None:
|
||
parser = argparse.ArgumentParser(description="将 DOCX 或 PPTX 文件解析为 Markdown")
|
||
|
||
parser.add_argument("file_path", help="DOCX 或 PPTX 文件的绝对路径")
|
||
|
||
parser.add_argument(
|
||
"-n",
|
||
"--context",
|
||
type=int,
|
||
default=2,
|
||
help="与 -s 配合使用，指定每个检索结果包含的前后行数（不包含空行）",
|
||
)
|
||
|
||
group = parser.add_mutually_exclusive_group()
|
||
group.add_argument(
|
||
"-c", "--count", action="store_true", help="返回解析后的 markdown 文档的总字数"
|
||
)
|
||
group.add_argument(
|
||
"-l", "--lines", action="store_true", help="返回解析后的 markdown 文档的总行数"
|
||
)
|
||
group.add_argument(
|
||
"-t",
|
||
"--titles",
|
||
action="store_true",
|
||
help="返回解析后的 markdown 文档的标题行（1-6级）",
|
||
)
|
||
group.add_argument(
|
||
"-tc",
|
||
"--title-content",
|
||
help="指定标题名称，输出该标题及其下级内容（不包含#号）",
|
||
)
|
||
group.add_argument(
|
||
"-s",
|
||
"--search",
|
||
help="使用正则表达式搜索文档，返回所有匹配结果（用---分隔）",
|
||
)
|
||
|
||
args = parser.parse_args()
|
||
|
||
if not os.path.exists(args.file_path):
|
||
print(f"错误: 文件不存在: {args.file_path}")
|
||
sys.exit(1)
|
||
|
||
file_type = detect_file_type(args.file_path)
|
||
if file_type is None:
|
||
print(f"错误: 文件不是有效的 DOCX 或 PPTX 格式: {args.file_path}")
|
||
sys.exit(1)
|
||
|
||
if file_type == "docx":
|
||
parsers = [
|
||
("MarkItDown", parse_docx_with_markitdown),
|
||
("python-docx", parse_docx_with_python_docx),
|
||
("XML 原生解析", parse_docx_with_xml),
|
||
]
|
||
else:
|
||
parsers = [
|
||
("MarkItDown", parse_pptx_with_markitdown),
|
||
("python-pptx", parse_pptx_with_python_pptx),
|
||
("XML 原生解析", parse_pptx_with_xml),
|
||
]
|
||
|
||
failures = []
|
||
content = None
|
||
|
||
for parser_name, parser_func in parsers:
|
||
content, error = parser_func(args.file_path)
|
||
if content is not None:
|
||
content = remove_markdown_images(content)
|
||
content = normalize_markdown_whitespace(content)
|
||
break
|
||
else:
|
||
failures.append(f"- {parser_name}: {error}")
|
||
|
||
if content is None:
|
||
print("所有解析方法均失败:")
|
||
for failure in failures:
|
||
print(failure)
|
||
sys.exit(1)
|
||
|
||
if args.count:
|
||
print(len(content.replace("\n", "")))
|
||
elif args.lines:
|
||
print(len(content.split("\n")))
|
||
elif args.titles:
|
||
titles = extract_titles(content)
|
||
for title in titles:
|
||
print(title)
|
||
elif args.title_content:
|
||
title_content = extract_title_content(content, args.title_content)
|
||
if title_content is None:
|
||
print(f"错误: 未找到标题 '{args.title_content}'")
|
||
sys.exit(1)
|
||
print(title_content, end="")
|
||
elif args.search:
|
||
search_result = search_markdown(content, args.search, args.context)
|
||
if search_result is None:
|
||
print(f"错误: 正则表达式无效或未找到匹配: '{args.search}'")
|
||
sys.exit(1)
|
||
print(search_result, end="")
|
||
else:
|
||
print(content, end="")
|
||
|
||
|
||
if __name__ == "__main__":
|
||
main()
|