将文档切分为重叠的 Token 块,适用于 RAG 管道和 LLM 上下文窗口。零依赖。
Scanned 9/4/2026
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---
name: document-chunker
version: 1.0.0
type: tool
author: Lukas Geiger
created: 2026-03-12
updated: 2026-03-12
description: 将文档切分为重叠的 Token 块,适用于 RAG 管道和 LLM 上下文窗口。零依赖。
standalone: true
anthropic_compatible: true
bach_compatible: true
bach_origin: true
category: utilities
tags: [chunking, rag, tokens, nlp, text-processing, embedding]
language: zh
status: active
dependencies: {'tools': [], 'services': [], 'protocols': [], 'python': []}
provenance: {'origin': 'bach', 'origin_path': 'system/tools/document_chunker.py', 'origin_version': '1.0.0', 'origin_repo': 'github.com/ellmos-ai/bach', 'last_sync_from_origin': '2026-03-12', 'last_sync_to_origin': None, 'local_changes_since_sync': False}
---
<img src="banner.png" width="100%" alt="document-chunker banner">
> **中文** — `document-chunker` 官方中文版本。
# Document Chunker (中文)
将文档切分为重叠的 Token 块。针对 RAG 管道和 LLM 上下文窗口进行了优化。
零依赖 — 仅使用 Python 标准库 + re。
## 使用方法
### 作为库使用
```python
from document_chunker import DocumentChunker
chunker = DocumentChunker(chunk_size=400, overlap=80)
chunks = chunker.chunk_text("Long text...")
for chunk in chunks:
print(f"Chunk {chunk['chunk_id']}: {chunk['tokens']} tokens")
```
### 切分单文件
```python
chunks = chunker.chunk_document("document.md", source="My Project")
```
### 切分整个目录
```python
from document_chunker import chunk_corpus
chunks = chunk_corpus(["doc1.md", "doc2.txt"], source="Corpus")
```
### CLI
```bash
python document_chunker.py document.md # Single file
python document_chunker.py ./docs/ # Entire directory
```
## 参数
| 参数 | 默认值 | 说明 |
|-----------|---------|-------------|
| chunk_size | 400 | 每个块的最大 Token 数 |
| overlap | 80 | 块之间的重叠 Token 数 |
## 支持的文件类型
`.txt`, `.md`, `.py`, `.sh`
## 变更日志
### 1.0.0 (2026-03-12)
- 移植自 BACH system/tools/document_chunker.py
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