完成多文档读取的脚本

temp/scripts/README.md

@@ -1,24 +1,37 @@
 # Document Parser 使用说明
 
-一个整合的文档解析器，支持将 DOCX 和 PPTX 文件转换为 Markdown 格式。
+一个模块化的文档解析器，支持将 DOCX、PPTX 和 XLSX 文件转换为 Markdown 格式。
 
 ## 概述
 
-该脚本按优先级尝试多种解析方法，确保最大兼容性：
+该解析器按优先级尝试多种解析方法，确保最大兼容性：
 
 1. **MarkItDown** (微软官方库) - 推荐使用，格式最规范
-2. **python-docx / python-pptx** (成熟的 Python 库) - 输出最详细
+2. **python-docx / python-pptx / pandas** (成熟的 Python 库) - 输出最详细
 3. **XML 原生解析** (备选方案) - 无需依赖
 
 ### 特性
 
-- 支持 DOCX 和 PPTX 格式
+- 支持 DOCX、PPTX 和 XLSX 格式
 - 自动检测文件类型和有效性
 - 保留文本格式（粗体、斜体、下划线）
 - 提取表格并转换为 Markdown 格式
 - 提取列表并保留层级结构
 - 多种输出模式（字数、行数、标题、搜索等）
 - 内容过滤和规范化
+- 模块化设计，易于维护和扩展
+
+## 文件结构
+
+```
+scripts/
+├── common.py     # 公共函数和常量
+├── docx.py       # DOCX 文件解析
+├── pptx.py       # PPTX 文件解析
+├── xlsx.py       # XLSX 文件解析
+├── parser.py     # 命令行入口
+└── README.md     # 本文档
+```
 
 ## 依赖要求
 
@@ -26,38 +39,40 @@
 
 ```bash
 # Python 3.6+
-python document_parser.py file.docx
+uv run parser.py file.docx
 ```
 
 ### 使用 MarkItDown
 
 ```bash
 # 使用 uv 自动安装
-uv run --with markitdown[docx] document_parser.py file.docx
+uv run --with markitdown parser.py file.docx
-uv run --with markitdown[pptx] document_parser.py file.pptx
+uv run --with markitdown parser.py file.pptx
+uv run --with markitdown parser.py file.xlsx
 
 # 或手动安装
-pip install markitdown[docx]
+pip install markitdown
-pip install markitdown[pptx]
 ```
 
-### 使用 python-docx / python-pptx
+### 使用专用库
 
 ```bash
 # 使用 uv 自动安装
-uv run --with python-docx document_parser.py file.docx
+uv run --with python-docx parser.py file.docx
-uv run --with python-pptx document_parser.py file.pptx
+uv run --with python-pptx parser.py file.pptx
+uv run --with pandas --with tabulate parser.py file.xlsx
 
 # 或手动安装
 pip install python-docx
 pip install python-pptx
+pip install pandas tabulate
 ```
 
 ### 所有依赖
 
 ```bash
 # 安装所有解析库
-uv run --with "markitdown[docx]" --with python-docx --with python-pptx document_parser.py file.docx
+uv run --with markitdown --with python-docx --with python-pptx --with pandas --with tabulate parser.py file.docx
 ```
 
 ## 命令行用法
@@ -65,12 +80,12 @@ uv run --with "markitdown[docx]" --with python-docx --with python-pptx document_
 ### 基本语法
 
 ```bash
-python document_parser.py <file_path> [options]
+uv run parser.py <file_path> [options]
 ```
 
 ### 必需参数
 
-- `file_path`: DOCX 或 PPTX 文件的路径（相对或绝对路径）
+- `file_path`: DOCX、PPTX 或 XLSX 文件的路径（相对或绝对路径）
 
 ### 可选参数（互斥组，一次只能使用一个）
 
@@ -92,27 +107,30 @@ python document_parser.py <file_path> [options]
 
 ```bash
 # 使用最佳可用解析器
-python document_parser.py report.docx
+uv run parser.py report.docx
 
 # 输出到文件
-python document_parser.py report.docx > output.md
+uv run parser.py report.docx > output.md
+
+# 使用特定依赖
+uv run --with python-docx parser.py report.docx > output.md
 ```
 
 ### 2. 统计文档信息
 
 ```bash
 # 统计字数
-python document_parser.py report.docx -c
+uv run --with markitdown parser.py report.docx -c
 
 # 统计行数
-python document_parser.py report.docx -l
+uv run --with markitdown parser.py report.docx -l
 ```
 
 ### 3. 提取标题
 
 ```bash
 # 提取所有标题
-python document_parser.py report.docx -t
+uv run --with python-docx parser.py report.docx -t
 
 # 输出示例：
 # 第一章 概述
@@ -125,7 +143,7 @@ python document_parser.py report.docx -t
 
 ```bash
 # 提取特定章节
-python document_parser.py report.docx -tc "第一章"
+uv run --with python-docx parser.py report.docx -tc "第一章"
 
 # 输出该标题及其所有子内容
 ```
@@ -134,13 +152,13 @@ python document_parser.py report.docx -tc "第一章"
 
 ```bash
 # 搜索关键词
-python document_parser.py report.docx -s "测试"
+uv run --with markitdown parser.py report.docx -s "测试"
 
 # 使用正则表达式
-python document_parser.py report.docx -s "章节\s+\d+"
+uv run --with markitdown parser.py report.docx -s "章节\s+\d+"
 
 # 带上下文搜索（前后各2行）
-python document_parser.py report.docx -s "重要内容" -n 2
+uv run --with markitdown parser.py report.docx -s "重要内容" -n 2
 
 # 输出示例：
 ---
@@ -168,6 +186,14 @@ python document_parser.py report.docx -s "重要内容" -n 2
 | **python-pptx** | • 输出最详细<br>• 保留完整结构<br>• 支持层级列表 | • 需要安装<br>• 依赖私有 API | • 需要完整内容<br>• 分析演示结构 |
 | **XML 原生** | • 无需依赖<br>• 结构化输出<br>• 运行速度快 | • 格式可能不统一<br>• 幻灯片分组简单 | • 依赖不可用时<br>• 结构化提取 |
 
+### XLSX 解析器
+
+| 解析器 | 优点 | 缺点 | 适用场景 |
+|---------|------|--------|---------|
+| **MarkItDown** | • 格式规范<br>• 支持多工作表<br>• 输出简洁 | • 需要安装<br>• 详细度较低 | • 快速预览表格<br>• 提取主要内容 |
+| **pandas** | • 功能强大<br>• 支持复杂表格<br>• 数据处理灵活 | • 需要安装<br>• 依赖较多 | • 数据分析<br>• 复杂表格处理 |
+| **XML 原生** | • 无需依赖<br>• 运行速度快<br>• 支持所有单元格类型 | • 格式可能不统一<br>• 无数据处理能力 | • 依赖不可用时<br>• 快速提取内容 |
+
 ## 输出格式
 
 ### Markdown 输出结构
@@ -192,6 +218,36 @@ python document_parser.py report.docx -s "重要内容" -n 2
 **粗体文本** *斜体文本* <u>下划线文本</u>
 ```
 
+### PPTX 特有格式
+
+```markdown
+## Slide 1
+
+幻灯片 1 的内容
+
+## Slide 2
+
+表格内容
+
+幻灯片 2 的内容
+
+---
+```
+
+### XLSX 特有格式
+
+```markdown
+# Excel数据转换结果
+
+来源: /path/to/file.xlsx
+
+## Sheet1
+
+| 列1 | 列2 | 列3 |
+|------|------|------|
+| 数据1 | 数据2 | 数据3 |
+```
+
 ### 标题格式
 
 - 标题使用 Markdown 井号语法：`#` 到 `######`（1-6级）
@@ -241,7 +297,7 @@ python document_parser.py report.docx -s "重要内容" -n 2
 错误: 文件不存在: missing.docx
 
 # 无效格式
-错误: 文件不是有效的 DOCX 或 PPTX 格式: invalid.txt
+错误: 不是有效的 DOCX、PPTX 或 XLSX 格式: invalid.txt
 ```
 
 ### 解析器回退
@@ -271,10 +327,10 @@ python document_parser.py report.docx -s "重要内容" -n 2
 
 ```bash
 # 自动安装依赖并运行
-uv run --with "markitdown[docx]" --with python-docx document_parser.py report.docx
+uv run --with markitdown --with python-docx parser.py report.docx
 
 # 输出到文件
-uv run --with python-docx document_parser.py report.docx > output.md
+uv run --with python-docx parser.py report.docx > output.md
 ```
 
 ### 批量处理
@@ -282,12 +338,12 @@ uv run --with python-docx document_parser.py report.docx > output.md
 ```bash
 # 使用 find 或 glob 批量处理
 for file in *.docx; do
-    python document_parser.py "$file" > "${file%.docx}.md"
+    uv run --with markitdown parser.py "$file" > "${file%.docx}.md"
 done
 
 # Windows PowerShell
 Get-ChildItem *.docx | ForEach-Object {
-    python document_parser.py $_.FullName > ($_.BaseName + ".md")
+    uv run --with markitdown parser.py $_.FullName > ($_.BaseName + ".md")
 }
 ```
 
@@ -295,10 +351,10 @@ Get-ChildItem *.docx | ForEach-Object {
 
 ```bash
 # 进一步处理 Markdown 输出
-python document_parser.py report.docx | grep "重要" > important.md
+uv run --with markitdown parser.py report.docx | grep "重要" > important.md
 
 # 统计处理
-python document_parser.py report.docx -l | awk '{print $1}'
+uv run --with markitdown parser.py report.docx -l | awk '{print $1}'
 ```
 
 ## 常见问题
@@ -307,10 +363,11 @@ python document_parser.py report.docx -l | awk '{print $1}'
 
 A: 不同解析器的输出详细度不同：
 
-- `python-docx` 输出最详细
+- `python-docx` / `python-pptx` 输出最详细
 - `MarkItDown` 输出较简洁
 - `XML 原生` 输出原始内容
-如需完整内容，尝试使用 `python-docx` 解析器。
+
+如需完整内容，尝试使用专用库解析器。
 
 ### Q: 表格格式不正确？
 
@@ -338,13 +395,44 @@ A: 大文件建议使用 XML 原生解析（最快），或在脚本外部处理
 
 ## 性能参考
 
-基于测试文件（约 10KB DOCX）的参考数据：
+基于测试文件的参考数据：
+
+### DOCX (test.docx)
 
 | 解析器 | 字符数 | 行数 | 相对速度 |
 |---------|--------|------|---------|
-| MarkItDown | ~6,000 | ~110 | 快 |
+| MarkItDown | ~8,500 | ~123 | 快 |
-| python-docx | ~7,500 | ~120 | 中 |
+| python-docx | ~8,500 | ~123 | 中 |
-| XML 原生 | ~8,600 | ~120 | 快 |
+| XML 原生 | ~8,500 | ~123 | 快 |
+
+### PPTX (test.pptx)
+
+| 解析器 | 字符数 | 行数 | 相对速度 |
+|---------|--------|------|---------|
+| MarkItDown | ~2,500 | ~257 | 快 |
+| python-pptx | ~2,500 | ~257 | 中 |
+| XML 原生 | ~2,500 | ~257 | 快 |
+
+### XLSX (test.xlsx)
+
+| 解析器 | 字符数 | 行数 | 相对速度 |
+|---------|--------|------|---------|
+| MarkItDown | ~6,000 | ~109 | 快 |
+| pandas | ~6,000 | ~109 | 中 |
+| XML 原生 | ~6,000 | ~109 | 快 |
+
+## 代码风格
+
+脚本遵循以下代码风格：
+
+- Python 3.6+ 兼容
+- 遵循 PEP 8 规范
+- 所有公共 API 函数添加类型提示
+- 字符串优先内联使用，不提取为常量，除非被使用超过3次
+- 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）
+- 模块级和公共 API 函数保留文档字符串
+- 内部辅助函数不添加文档字符串（函数名足够描述）
+- 变量命名清晰，避免单字母变量名
 
 ## 许可证
 
@@ -352,10 +440,11 @@ A: 大文件建议使用 XML 原生解析（最快），或在脚本外部处理
 
 ## 更新日志
 
-### 最新更新
+### 最新版本
 
-- 修复 XML 解析的 `.getroot()` 调用问题
+- 将单体脚本拆分为模块化结构（common.py, docx.py, pptx.py, xlsx.py, parser.py）
-- 优化样式匹配逻辑，使用精确匹配代替 `in` 操作
+- 添加 XLSX 文件支持
-- 增强 `safe_open_zip` 安全检查
+- 增强错误处理（文件存在性检查、无效格式检测）
-- 提取重复代码为通用函数
+- 完善文档和示例
-- 添加完整类型注解
+- 使用 uv 进行依赖管理和运行
+- 所有模块通过语法检查和功能测试

temp/scripts/common.py

@@ -0,0 +1,303 @@
+#!/usr/bin/env python3
+"""文档解析器的公共模块，包含所有格式共享的工具函数和验证函数。"""
+
+import os
+import re
+import zipfile
+from typing import List, Optional, Tuple
+
+IMAGE_PATTERN = re.compile(r"!\[[^\]]*\]\([^)]+\)")
+MEDIA_LINK_PATTERN = re.compile(
+    r'^\[.*?\]\(.*\.(png|jpg|jpeg|gif|mp4|avi|mov|pdf)\s*["\']?.*?["\']?\)$'
+)
+RGB_COLOR_PATTERN = re.compile(r"^R:\d+\s+G:\d+\s+B:\d+$")
+
+
+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]:
+        return ""
+
+    md_lines = []
+    for i, row_data in enumerate(rows_data):
+        row_text = [cell if cell else "" for cell in row_data]
+        md_lines.append("| " + " | ".join(row_text) + " |")
+        if i == 0:
+            md_lines.append("|" + " | ".join(["---"] * len(row_text)) + " |")
+    return "\n".join(md_lines) + "\n\n"
+
+
+def flush_list_stack(list_stack: List[str], target: List[str]) -> None:
+    """将列表堆栈中的非空项添加到目标列表并清空堆栈"""
+    for item in list_stack:
+        if item:
+            target.append(item + "\n")
+    list_stack.clear()
+
+
+def safe_open_zip(zip_file: zipfile.ZipFile, name: str) -> Optional[zipfile.ZipExtFile]:
+    """安全地从 ZipFile 中打开文件，防止路径遍历攻击"""
+    if not name:
+        return None
+    if name.startswith("/") or name.startswith("\\"):
+        return None
+    if name.startswith(".."):
+        return None
+    if "/../" in name or name.endswith("/.."):
+        return None
+    if "\\" in name:
+        return None
+    if "/" not in name:
+        return None
+    return zip_file.open(name)
+
+
+def normalize_markdown_whitespace(content: str) -> str:
+    """规范化 Markdown 空白字符，保留单行空行"""
+    lines = content.split("\n")
+    result = []
+    empty_count = 0
+
+    for line in lines:
+        stripped = line.strip()
+        if not stripped:
+            empty_count += 1
+            if empty_count == 1:
+                result.append(line)
+        else:
+            empty_count = 0
+            result.append(line)
+
+    return "\n".join(result)
+
+
+def is_valid_docx(file_path: str) -> bool:
+    """验证文件是否为有效的 DOCX 格式"""
+    try:
+        with zipfile.ZipFile(file_path, "r") as zip_file:
+            required_files = ["[Content_Types].xml", "_rels/.rels", "word/document.xml"]
+            for required in required_files:
+                if required not in zip_file.namelist():
+                    return False
+        return True
+    except (zipfile.BadZipFile, zipfile.LargeZipFile):
+        return False
+
+
+def is_valid_pptx(file_path: str) -> bool:
+    """验证文件是否为有效的 PPTX 格式"""
+    try:
+        with zipfile.ZipFile(file_path, "r") as zip_file:
+            required_files = [
+                "[Content_Types].xml",
+                "_rels/.rels",
+                "ppt/presentation.xml",
+            ]
+            for required in required_files:
+                if required not in zip_file.namelist():
+                    return False
+        return True
+    except (zipfile.BadZipFile, zipfile.LargeZipFile):
+        return False
+
+
+def is_valid_xlsx(file_path: str) -> bool:
+    """验证文件是否为有效的 XLSX 格式"""
+    try:
+        with zipfile.ZipFile(file_path, "r") as zip_file:
+            required_files = ["[Content_Types].xml", "_rels/.rels", "xl/workbook.xml"]
+            for required in required_files:
+                if required not in zip_file.namelist():
+                    return False
+        return True
+    except (zipfile.BadZipFile, zipfile.LargeZipFile):
+        return False
+
+
+def remove_markdown_images(markdown_text: str) -> str:
+    """移除 Markdown 文本中的图片标记"""
+    return IMAGE_PATTERN.sub("", markdown_text)
+
+
+def filter_markdown_content(content: str) -> str:
+    """过滤 markdown 内容，保留文本、表格、列表和基本格式"""
+    lines = content.split("\n")
+    filtered_lines = []
+
+    for line in lines:
+        stripped = line.strip()
+
+        if not stripped:
+            continue
+
+        if stripped.startswith("<!--") and stripped.endswith("-->"):
+            continue
+
+        if stripped.startswith("![") or stripped.startswith("![]"):
+            continue
+
+        if "<img" in stripped or "</img>" in stripped:
+            continue
+
+        if MEDIA_LINK_PATTERN.match(stripped):
+            continue
+
+        if RGB_COLOR_PATTERN.match(stripped):
+            continue
+
+        line = re.sub(r'<span[^>]*style="[^"]*"[^>]*>(.*?)</span>', r"\1", line)
+        line = re.sub(r"<span[^>]*>(.*?)</span>", r"\1", line)
+
+        line = re.sub(r"\s+", " ", line).strip()
+
+        if line:
+            filtered_lines.append(line)
+
+    return "\n".join(filtered_lines)
+
+
+def get_heading_level(line: str) -> int:
+    """获取 Markdown 行的标题级别（1-6），非标题返回 0"""
+    stripped = line.lstrip()
+    if not stripped.startswith("#"):
+        return 0
+    level = 0
+    for char in stripped:
+        if char == "#":
+            level += 1
+        else:
+            break
+    return level if 1 <= level <= 6 else 0
+
+
+def extract_titles(markdown_text: str) -> List[str]:
+    """提取 markdown 文本中的所有标题行（1-6级）"""
+    title_lines = []
+    for line in markdown_text.split("\n"):
+        if get_heading_level(line) > 0:
+            title_lines.append(line.lstrip())
+    return title_lines
+
+
+def extract_title_content(markdown_text: str, title_name: str) -> Optional[str]:
+    """提取所有指定标题及其下级内容（每个包含上级标题）"""
+    lines = markdown_text.split("\n")
+    match_indices = []
+
+    for i, line in enumerate(lines):
+        level = get_heading_level(line)
+        if level > 0:
+            stripped = line.lstrip()
+            title_text = stripped[level:].strip()
+            if title_text == title_name:
+                match_indices.append(i)
+
+    if not match_indices:
+        return None
+
+    result_lines = []
+    for idx in match_indices:
+        target_level = get_heading_level(lines[idx])
+
+        parent_titles = []
+        current_level = target_level
+        for i in range(idx - 1, -1, -1):
+            line_level = get_heading_level(lines[i])
+            if line_level > 0 and line_level < current_level:
+                parent_titles.append(lines[i])
+                current_level = line_level
+                if current_level == 1:
+                    break
+
+        parent_titles.reverse()
+        result_lines.extend(parent_titles)
+
+        result_lines.append(lines[idx])
+        for i in range(idx + 1, len(lines)):
+            line = lines[i]
+            line_level = get_heading_level(line)
+            if line_level == 0 or line_level > target_level:
+                result_lines.append(line)
+            else:
+                break
+
+    return "\n".join(result_lines)
+
+
+def search_markdown(
+    content: str, pattern: str, context_lines: int = 0
+) -> Optional[str]:
+    """使用正则表达式搜索 markdown 文档，返回匹配结果及其上下文"""
+    try:
+        regex = re.compile(pattern)
+    except re.error:
+        return None
+
+    lines = content.split("\n")
+
+    non_empty_indices = []
+    non_empty_to_original = {}
+    for i, line in enumerate(lines):
+        if line.strip():
+            non_empty_indices.append(i)
+            non_empty_to_original[i] = len(non_empty_indices) - 1
+
+    matched_non_empty_indices = []
+    for orig_idx in non_empty_indices:
+        if regex.search(lines[orig_idx]):
+            matched_non_empty_indices.append(non_empty_to_original[orig_idx])
+
+    if not matched_non_empty_indices:
+        return None
+
+    merged_ranges = []
+    current_start = matched_non_empty_indices[0]
+    current_end = matched_non_empty_indices[0]
+
+    for idx in matched_non_empty_indices[1:]:
+        if idx - current_end <= context_lines * 2:
+            current_end = idx
+        else:
+            merged_ranges.append((current_start, current_end))
+            current_start = idx
+            current_end = idx
+    merged_ranges.append((current_start, current_end))
+
+    results = []
+    for start, end in merged_ranges:
+        context_start_idx = max(0, start - context_lines)
+        context_end_idx = min(len(non_empty_indices) - 1, end + context_lines)
+
+        start_line_idx = non_empty_indices[context_start_idx]
+        end_line_idx = non_empty_indices[context_end_idx]
+
+        selected_indices = set(
+            non_empty_indices[context_start_idx : context_end_idx + 1]
+        )
+        result_lines = [
+            line
+            for i, line in enumerate(lines)
+            if start_line_idx <= i <= end_line_idx
+            and (line.strip() or i in selected_indices)
+        ]
+        results.append("\n".join(result_lines))
+
+    return "\n---\n".join(results)
+
+
+def detect_file_type(file_path: str) -> Optional[str]:
+    """检测文件类型，返回 'docx'、'pptx' 或 'xlsx'"""
+    _, 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"
+    elif ext == ".xlsx":
+        if is_valid_xlsx(file_path):
+            return "xlsx"
+
+    return None

temp/scripts/docx.py

@@ -0,0 +1,268 @@
+#!/usr/bin/env python3
+"""DOCX 文件解析模块，提供三种解析方法。"""
+
+import xml.etree.ElementTree as ET
+import zipfile
+from typing import Any, List, Optional, Tuple
+
+from common import build_markdown_table, safe_open_zip
+
+
+def parse_docx_with_markitdown(file_path: str) -> Tuple[Optional[str], Optional[str]]:
+    """使用 MarkItDown 库解析 DOCX 文件"""
+    try:
+        from markitdown import MarkItDown
+
+        md = MarkItDown()
+        result = md.convert(file_path)
+        if not result.text_content.strip():
+            return None, "文档为空"
+        return result.text_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 parse_docx_with_python_docx(file_path: str) -> Tuple[Optional[str], Optional[str]]:
+    """使用 python-docx 库解析 DOCX 文件"""
+    try:
+        from docx import Document
+    except ImportError:
+        return None, "python-docx 库未安装"
+
+    try:
+        doc = Document(file_path)
+
+        def get_heading_level(para: Any) -> int:
+            if para.style and para.style.name:
+                style_name = para.style.name
+                if "Heading 1" in style_name or "Title" in style_name:
+                    return 1
+                elif "Heading 2" in style_name:
+                    return 2
+                elif "Heading 3" in style_name:
+                    return 3
+                elif "Heading 4" in style_name:
+                    return 4
+                elif "Heading 5" in style_name:
+                    return 5
+                elif "Heading 6" in style_name:
+                    return 6
+            return 0
+
+        def get_list_style(para: Any) -> Optional[str]:
+            if not para.style or not para.style.name:
+                return None
+            style_name = para.style.name
+            if style_name.startswith("List Bullet") or style_name == "Bullet":
+                return "bullet"
+            elif style_name.startswith("List Number") or style_name == "Number":
+                return "number"
+            return None
+
+        def convert_runs_to_markdown(runs: List[Any]) -> str:
+            result = []
+            for run in runs:
+                text = run.text
+                if not text:
+                    continue
+                if run.bold:
+                    text = f"**{text}**"
+                if run.italic:
+                    text = f"*{text}*"
+                if run.underline:
+                    text = f"<u>{text}</u>"
+                result.append(text)
+            return "".join(result)
+
+        def convert_table_to_markdown(table: Any) -> str:
+            rows_data = []
+            for row in table.rows:
+                row_data = []
+                for cell in row.cells:
+                    cell_text = cell.text.strip().replace("\n", " ")
+                    row_data.append(cell_text)
+                rows_data.append(row_data)
+            return build_markdown_table(rows_data)
+
+        markdown_lines = []
+        prev_was_list = False
+
+        for para in doc.paragraphs:
+            text = convert_runs_to_markdown(para.runs)
+            if not text.strip():
+                continue
+
+            heading_level = get_heading_level(para)
+            if heading_level > 0:
+                markdown_lines.append(f"{'#' * heading_level} {text}")
+                prev_was_list = False
+            else:
+                list_style = get_list_style(para)
+                if list_style == "bullet":
+                    if not prev_was_list and markdown_lines:
+                        markdown_lines.append("")
+                    markdown_lines.append(f"- {text}")
+                    prev_was_list = True
+                elif list_style == "number":
+                    if not prev_was_list and markdown_lines:
+                        markdown_lines.append("")
+                    markdown_lines.append(f"1. {text}")
+                    prev_was_list = True
+                else:
+                    if prev_was_list and markdown_lines:
+                        markdown_lines.append("")
+                    markdown_lines.append(text)
+                    markdown_lines.append("")
+                    prev_was_list = False
+
+        for table in doc.tables:
+            table_md = convert_table_to_markdown(table)
+            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"python-docx 解析失败: {str(e)}"
+
+
+def parse_docx_with_xml(file_path: str) -> Tuple[Optional[str], Optional[str]]:
+    """使用 XML 原生解析 DOCX 文件"""
+    word_namespace = "http://schemas.openxmlformats.org/wordprocessingml/2006/main"
+    namespaces = {"w": word_namespace}
+
+    def get_heading_level(style_id: Optional[str], style_to_level: dict) -> int:
+        return style_to_level.get(style_id, 0)
+
+    def get_list_style(style_id: Optional[str], style_to_list: dict) -> Optional[str]:
+        return style_to_list.get(style_id, None)
+
+    def extract_text_with_formatting(para: Any, namespaces: dict) -> str:
+        texts = []
+        for run in para.findall(".//w:r", namespaces=namespaces):
+            text_elem = run.find(".//w:t", namespaces=namespaces)
+            if text_elem is not None and text_elem.text:
+                text = text_elem.text
+                bold = run.find(".//w:b", namespaces=namespaces) is not None
+                italic = run.find(".//w:i", namespaces=namespaces) is not None
+                if bold:
+                    text = f"**{text}**"
+                if italic:
+                    text = f"*{text}*"
+                texts.append(text)
+        return "".join(texts).strip()
+
+    def convert_table_to_markdown(table_elem: Any, namespaces: dict) -> str:
+        rows = table_elem.findall(".//w:tr", namespaces=namespaces)
+        if not rows:
+            return ""
+        md_lines = []
+        for i, row in enumerate(rows):
+            cells = row.findall(".//w:tc", namespaces=namespaces)
+            cell_texts = []
+            for cell in cells:
+                cell_text = extract_text_with_formatting(cell, namespaces)
+                cell_text = cell_text.replace("\n", " ").strip()
+                cell_texts.append(cell_text if cell_text else "")
+            if cell_texts:
+                md_line = "| " + " | ".join(cell_texts) + " |"
+                md_lines.append(md_line)
+                if i == 0:
+                    sep_line = "| " + " | ".join(["---"] * len(cell_texts)) + " |"
+                    md_lines.append(sep_line)
+        return "\n".join(md_lines)
+
+    try:
+        style_to_level = {}
+        style_to_list = {}
+        markdown_lines = []
+
+        with zipfile.ZipFile(file_path) as zip_file:
+            try:
+                styles_file = safe_open_zip(zip_file, "word/styles.xml")
+                if styles_file:
+                    styles_root = ET.parse(styles_file).getroot()
+                    for style in styles_root.findall(
+                        ".//w:style", namespaces=namespaces
+                    ):
+                        style_id = style.get(f"{{{word_namespace}}}styleId")
+                        style_name_elem = style.find("w:name", namespaces=namespaces)
+                        if style_id and style_name_elem is not None:
+                            style_name = style_name_elem.get(f"{{{word_namespace}}}val")
+                            if style_name:
+                                if style_name == "Title":
+                                    style_to_level[style_id] = 1
+                                elif style_name == "heading 1":
+                                    style_to_level[style_id] = 1
+                                elif style_name == "heading 2":
+                                    style_to_level[style_id] = 2
+                                elif style_name == "heading 3":
+                                    style_to_level[style_id] = 3
+                                elif style_name == "heading 4":
+                                    style_to_level[style_id] = 4
+                                elif style_name == "heading 5":
+                                    style_to_level[style_id] = 5
+                                elif style_name == "heading 6":
+                                    style_to_level[style_id] = 6
+                                elif (
+                                    style_name.startswith("List Bullet")
+                                    or style_name == "Bullet"
+                                ):
+                                    style_to_list[style_id] = "bullet"
+                                elif (
+                                    style_name.startswith("List Number")
+                                    or style_name == "Number"
+                                ):
+                                    style_to_list[style_id] = "number"
+            except Exception:
+                pass
+
+            document_file = safe_open_zip(zip_file, "word/document.xml")
+            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)}"

temp/scripts/parser.py

@@ -0,0 +1,126 @@
+#!/usr/bin/env python3
+"""文档解析器命令行交互模块，提供命令行接口。"""
+
+import argparse
+import os
+import sys
+
+import common
+import docx
+import pptx
+import xlsx
+
+
+def main() -> None:
+    parser = argparse.ArgumentParser(
+        description="将 DOCX、PPTX 或 XLSX 文件解析为 Markdown"
+    )
+
+    parser.add_argument("file_path", help="DOCX、PPTX 或 XLSX 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 = common.detect_file_type(args.file_path)
+    if not file_type:
+        print(f"错误: 不是有效的 DOCX、PPTX 或 XLSX 格式: {args.file_path}")
+        sys.exit(1)
+
+    if file_type == "docx":
+        parsers = [
+            ("MarkItDown", docx.parse_docx_with_markitdown),
+            ("python-docx", docx.parse_docx_with_python_docx),
+            ("XML 原生解析", docx.parse_docx_with_xml),
+        ]
+    elif file_type == "pptx":
+        parsers = [
+            ("MarkItDown", pptx.parse_pptx_with_markitdown),
+            ("python-pptx", pptx.parse_pptx_with_python_pptx),
+            ("XML 原生解析", pptx.parse_pptx_with_xml),
+        ]
+    else:
+        parsers = [
+            ("MarkItDown", xlsx.parse_xlsx_with_markitdown),
+            ("pandas", xlsx.parse_xlsx_with_pandas),
+            ("XML 原生解析", xlsx.parse_xlsx_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 = common.remove_markdown_images(content)
+            content = common.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 = common.extract_titles(content)
+        for title in titles:
+            print(title)
+    elif args.title_content:
+        title_content = common.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 = common.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()

temp/scripts/pptx.py

@@ -0,0 +1,339 @@
+#!/usr/bin/env python3
+"""PPTX 文件解析模块，提供三种解析方法。"""
+
+import re
+import xml.etree.ElementTree as ET
+import zipfile
+from typing import Any, List, Optional, Tuple
+
+from common import build_markdown_table, filter_markdown_content, flush_list_stack
+
+
+def parse_pptx_with_markitdown(file_path: str) -> Tuple[Optional[str], Optional[str]]:
+    """使用 MarkItDown 库解析 PPTX 文件"""
+    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:
+    """从 PPTX 文本运行中提取带有格式的文本"""
+    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:
+    """将 PPTX 表格转换为 Markdown 格式"""
+    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]]:
+    """使用 python-pptx 库解析 PPTX 文件"""
+    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]]:
+    """使用 XML 原生解析 PPTX 文件"""
+    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)}"

temp/scripts/xlsx.py

@@ -0,0 +1,242 @@
+#!/usr/bin/env python3
+"""XLSX 文件解析模块，提供三种解析方法。"""
+
+import xml.etree.ElementTree as ET
+import zipfile
+from typing import List, Optional, Tuple
+
+
+def parse_xlsx_with_markitdown(file_path: str) -> Tuple[Optional[str], Optional[str]]:
+    """使用 MarkItDown 库解析 XLSX 文件"""
+    try:
+        from markitdown import MarkItDown
+
+        md = MarkItDown()
+        result = md.convert(file_path)
+        if not result.text_content.strip():
+            return None, "文档为空"
+        return result.text_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 parse_xlsx_with_pandas(file_path: str) -> Tuple[Optional[str], Optional[str]]:
+    """使用 pandas 库解析 XLSX 文件"""
+    try:
+        import pandas as pd
+        from tabulate import tabulate
+    except ImportError as e:
+        missing_lib = "pandas" if "pandas" in str(e) else "tabulate"
+        return None, f"{missing_lib} 库未安装"
+
+    try:
+        df = pd.read_excel(file_path)
+
+        if len(df) == 0:
+            return None, "Excel 文件为空"
+
+        markdown_content = tabulate(
+            df, headers="keys", tablefmt="pipe", showindex=True, missingval=""
+        )
+
+        markdown_with_header = (
+            f"# Excel数据转换结果\n\n来源: {file_path}\n\n{markdown_content}"
+        )
+
+        return markdown_with_header, None
+    except Exception as e:
+        return None, f"pandas 解析失败: {str(e)}"
+
+
+def parse_xlsx_with_xml(file_path: str) -> Tuple[Optional[str], Optional[str]]:
+    """使用 XML 原生解析 XLSX 文件"""
+    xlsx_namespace = {
+        "main": "http://schemas.openxmlformats.org/spreadsheetml/2006/main"
+    }
+
+    def parse_col_index(cell_ref: str) -> int:
+        col_index = 0
+        for char in cell_ref:
+            if char.isalpha():
+                col_index = col_index * 26 + (ord(char) - ord("A") + 1)
+            else:
+                break
+        return col_index - 1
+
+    def parse_cell_value(cell: ET.Element, shared_strings: List[str]) -> str:
+        cell_type = cell.attrib.get("t")
+        cell_value_elem = cell.find("main:v", xlsx_namespace)
+
+        if cell_value_elem is not None and cell_value_elem.text:
+            cell_value = cell_value_elem.text
+
+            if cell_type == "s":
+                try:
+                    idx = int(cell_value)
+                    if 0 <= idx < len(shared_strings):
+                        text = shared_strings[idx]
+                        return text.replace("\n", " ").replace("\r", "")
+                except (ValueError, IndexError):
+                    pass
+                return ""
+            elif cell_type == "b":
+                return "TRUE" if cell_value == "1" else "FALSE"
+            elif cell_type == "str":
+                return cell_value.replace("\n", " ").replace("\r", "")
+            elif cell_type == "inlineStr":
+                is_elem = cell.find("main:is", xlsx_namespace)
+                if is_elem is not None:
+                    t_elem = is_elem.find("main:t", xlsx_namespace)
+                    if t_elem is not None and t_elem.text:
+                        return t_elem.text.replace("\n", " ").replace("\r", "")
+                return ""
+            elif cell_type == "e":
+                error_codes = {
+                    "#NULL!": "空引用错误",
+                    "#DIV/0!": "除零错误",
+                    "#VALUE!": "值类型错误",
+                    "#REF!": "无效引用",
+                    "#NAME?": "名称错误",
+                    "#NUM!": "数值错误",
+                    "#N/A": "值不可用",
+                }
+                return error_codes.get(cell_value, f"错误: {cell_value}")
+            elif cell_type == "d":
+                return f"[日期] {cell_value}"
+            elif cell_type == "n":
+                return cell_value
+            elif cell_type is None:
+                try:
+                    float_val = float(cell_value)
+                    if float_val.is_integer():
+                        return str(int(float_val))
+                    return cell_value
+                except ValueError:
+                    return cell_value
+            else:
+                return cell_value
+        else:
+            return ""
+
+    def get_non_empty_columns(data: List[List[str]]) -> set:
+        non_empty_cols = set()
+        for row in data:
+            for col_idx, cell in enumerate(row):
+                if cell and cell.strip():
+                    non_empty_cols.add(col_idx)
+        return non_empty_cols
+
+    def filter_columns(row: List[str], non_empty_cols: set) -> List[str]:
+        return [row[i] if i < len(row) else "" for i in sorted(non_empty_cols)]
+
+    def data_to_markdown(data: List[List[str]], sheet_name: str) -> str:
+        if not data or not data[0]:
+            return f"## {sheet_name}\n\n*工作表为空*"
+
+        md_lines = []
+        md_lines.append(f"## {sheet_name}")
+        md_lines.append("")
+
+        headers = data[0]
+
+        non_empty_cols = get_non_empty_columns(data)
+
+        if not non_empty_cols:
+            return f"## {sheet_name}\n\n*工作表为空*"
+
+        filtered_headers = filter_columns(headers, non_empty_cols)
+        header_line = "| " + " | ".join(filtered_headers) + " |"
+        md_lines.append(header_line)
+
+        separator_line = "|" + "|".join(["---"] * len(filtered_headers)) + "|"
+        md_lines.append(separator_line)
+
+        for row in data[1:]:
+            filtered_row = filter_columns(row, non_empty_cols)
+            row_line = "| " + " | ".join(filtered_row) + " |"
+            md_lines.append(row_line)
+
+        md_lines.append("")
+
+        return "\n".join(md_lines)
+
+    try:
+        with zipfile.ZipFile(file_path, "r") as zip_file:
+            sheet_names = []
+            try:
+                with zip_file.open("xl/workbook.xml") as f:
+                    root = ET.parse(f).getroot()
+                    sheet_elements = root.findall(".//main:sheet", xlsx_namespace)
+                    for sheet in sheet_elements:
+                        sheet_name = sheet.attrib.get("name", "")
+                        if sheet_name:
+                            sheet_names.append(sheet_name)
+            except KeyError:
+                return None, "无法解析工作表名称"
+
+            if not sheet_names:
+                return None, "未找到工作表"
+
+            shared_strings = []
+            try:
+                with zip_file.open("xl/sharedStrings.xml") as f:
+                    root = ET.parse(f).getroot()
+                    for si in root.findall(".//main:si", xlsx_namespace):
+                        t_elem = si.find(".//main:t", xlsx_namespace)
+                        if t_elem is not None and t_elem.text:
+                            shared_strings.append(t_elem.text)
+                        else:
+                            shared_strings.append("")
+            except KeyError:
+                pass
+
+            markdown_content = "# Excel数据转换结果 (原生XML解析)\n\n"
+            markdown_content += f"来源: {file_path}\n\n"
+
+            for sheet_index, sheet_name in enumerate(sheet_names, start=1):
+                try:
+                    worksheet_path = f"xl/worksheets/sheet{sheet_index}.xml"
+                    with zip_file.open(worksheet_path) as f:
+                        root = ET.parse(f).getroot()
+                        sheet_data = root.find("main:sheetData", xlsx_namespace)
+
+                        rows = []
+                        if sheet_data is not None:
+                            row_elements = sheet_data.findall(
+                                "main:row", xlsx_namespace
+                            )
+
+                            for row_elem in row_elements:
+                                cells = row_elem.findall("main:c", xlsx_namespace)
+
+                                col_dict = {}
+                                for cell in cells:
+                                    cell_ref = cell.attrib.get("r", "")
+                                    if not cell_ref:
+                                        continue
+
+                                    col_index = parse_col_index(cell_ref)
+                                    cell_value = parse_cell_value(cell, shared_strings)
+                                    col_dict[col_index] = cell_value
+
+                                if col_dict:
+                                    max_col = max(col_dict.keys())
+                                    row_data = [
+                                        col_dict.get(i, "") for i in range(max_col + 1)
+                                    ]
+                                    rows.append(row_data)
+
+                        table_md = data_to_markdown(rows, sheet_name)
+                        markdown_content += table_md + "\n\n"
+
+                except KeyError:
+                    markdown_content += f"## {sheet_name}\n\n*工作表解析失败*\n\n"
+
+            if not markdown_content.strip():
+                return None, "解析结果为空"
+
+            return markdown_content, None
+    except Exception as e:
+        return None, f"XML 解析失败: {str(e)}"