284 lines
8.3 KiB
Markdown
284 lines
8.3 KiB
Markdown
---
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name: "calibre-title-cleaner"
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description: "清洗 Calibre 书库中损坏的 txt 文档书名（HTML标签/长文本/乱码/路径超限修复）"
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status: proposal
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version: "v2"
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date: "2026-06-24T01:12:53.053Z"
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---
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# Calibre 书库书名清洗 & 作者提取 Skill
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## 概述
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清洗 Calibre 书库中因从 txt 文件自动导入而产生的损坏书名，**同时从书名中提取作者信息**并更新到作者字段。适用于 Calibre 书库路径 `/home/yangxuan/calibre/books`。
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## 前置条件
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- Calibre 数据库路径：`/home/yangxuan/calibre/books`
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- 元数据文件：`/home/yangxuan/calibre/books/metadata.db`
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- 需要 `calibre-debug` 或 `calibre` Python 环境（使用 `LibraryDatabase` API）
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- **运行前须停止其他 Calibre 进程**（桌面版、Calibre-Web Docker）
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- **运行前必须备份** `metadata.db`
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## 作者提取规则（从书名中提取）
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### 需要匹配的作者格式（基于实际书库数据）
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格式 | 示例 | 正则
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---|---|---
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`作者：xxx`（中文冒号） | `...作者：镜欲` | `作者[：:]\s*([^\s,，、\)）]+)`
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`作者:xxx`（英文冒号） | `...作者:镜欲` | 同上
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`-xxx`（英文 dash 结尾） | `善良的美艳妈妈-糠麸` | `-([^-()【】\[\]]+)$`
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`翻译：xxx` | `...翻译：kkmanlg` | `翻译[：:]\s*([^\s,，、\)）]+)`
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`BY xxx`（英文 BY） | `...BY狱厨` | `\b[Bb][Yy]\s+([^\s,，、\)）]+)`
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`&xxx`（and 符结尾） | `...&axenic` | `&([^&()【】\[\] ]+)$`
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### 提取策略
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1. **优先匹配精确的"作者："标记**（最可靠）
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2. 失败后尝试 `-xxx` 结尾（短作者名）
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3. 再尝试 `翻译：`、`BY`、`&xxx` 等
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4. 如果提取到的作者名仍是乱填的（如 `正文`、`第01章`、`【内容简介】`），**跳过**，标为 Unknown
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### 排除项（以下不是真作者）
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- `正文`、`内容简介`
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- `第\d+[章节]`（章节名）
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- 长度 > 30 字符的内容摘要
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## 书名清洗规则
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### `shorten(s, max_bytes=120)`
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将字符串截断到指定字节数，避免因 UTF-8 中文字符跨字节而损坏。
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```python
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def shorten(s, max_bytes=120):
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encoded = s.encode('utf-8')
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if len(encoded) <= max_bytes:
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return s
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try:
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return encoded[:max_bytes].decode('utf-8')
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except:
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return encoded[:max_bytes-3].decode('utf-8', errors='ignore')
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```
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### `clean_title(title)`
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```python
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def clean_title(title):
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t = title
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# 移除 HTML 标签
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t = re.sub(r'<[^>]+>', '', t)
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# 替换 _BR_ / _BR 标记
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t = re.sub(r'_BR_', ' ', t, flags=re.IGNORECASE)
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t = re.sub(r'_BR(?![a-zA-Z])', ' ', t)
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# 移除 _fontxxx_ / _imgxxx_ 标记
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t = re.sub(r'_font[^_]*_', '', t)
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t = re.sub(r'_img[^_]*_', '', t)
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# 合并多余空格
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t = re.sub(r'\s+', ' ', t).strip()
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# 超长截短
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if len(t) > 100:
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m = re.search(r'[\u4e00-\u9fff]{2,}', t)
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if m:
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t = t[m.start():]
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t = t[:60].rstrip('，。；：、！？…\ufffd\'"').rstrip('.,;:!?\'').strip()
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# 移除控制字符
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t = re.sub(r'[\x00-\x08\x0b\x0c\x0e-\x1f]', '', t)
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return shorten(t, 100).strip() or 'Unknown'
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```
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### 坏书检测条件
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```python
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is_bad = (
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len(title) > 100 or
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'<img' in title or '<BR' in title or '<font' in title or
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'\ufffd' in title or
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len(title.encode('utf-8')) > 150
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)
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```
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## 完整脚本示例（含作者提取）
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```python
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import re
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from calibre.db.legacy import LibraryDatabase
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def shorten(s, max_bytes=120):
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encoded = s.encode('utf-8')
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if len(encoded) <= max_bytes:
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return s
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try:
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return encoded[:max_bytes].decode('utf-8')
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except:
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return encoded[:max_bytes-3].decode('utf-8', errors='ignore')
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EXCLUDE_AUTHORS = {'正文', '内容简介', ''}
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def extract_author_from_title(title):
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"""从书名中提取作者名"""
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# 1. 作者：xxx
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m = re.search(r'作者[：:]\s*([^\s,，、\)）《\[]+)', title)
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if m:
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name = m.group(1).strip()
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if name not in EXCLUDE_AUTHORS and not re.match(r'^第\d+[章节]', name):
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return name
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# 2. 翻译：xxx
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m = re.search(r'翻译[：:]\s*([^\s,，、\)）《\[]+)', title)
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if m:
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return m.group(1).strip()
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# 3. BY xxx
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m = re.search(r'\b[Bb][Yy]\s+([^\s,，、\)）《\[]+)', title)
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if m:
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name = m.group(1).strip()
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if name not in EXCLUDE_AUTHORS:
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return name
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# 4. -xxx 结尾（最后一个 dash 后的词）
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m = re.search(r'-([^-()【】\[\]{}《》\s]{2,30})$', title)
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if m:
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name = m.group(1).strip()
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if name not in EXCLUDE_AUTHORS and not re.match(r'^\d+', name):
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return name
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# 5. &xxx 结尾
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m = re.search(r'&([^&()【】\[\]\s]{2,30})$', title)
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if m:
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name = m.group(1).strip()
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if name not in EXCLUDE_AUTHORS:
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return name
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return None
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def clean_title_and_extract_author(n):
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"""清洗书名并返回 (cleaned_title, extracted_author_or_None)"""
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t = n
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t = re.sub(r'<[^>]+>', '', t)
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t = re.sub(r'_BR_', ' ', t, flags=re.IGNORECASE)
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t = re.sub(r'_BR(?![a-zA-Z])', ' ', t)
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t = re.sub(r'_font[^_]*_', '', t)
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t = re.sub(r'_img[^_]*_', '', t)
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t = re.sub(r'\s+', ' ', t).strip()
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extracted_author = extract_author_from_title(t)
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# 如果提取到了作者，从书名中移除作者部分
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if extracted_author:
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t = re.sub(r'作者[：:]\s*' + re.escape(extracted_author), '', t)
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t = re.sub(r'翻译[：:]\s*' + re.escape(extracted_author), '', t)
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t = re.sub(r'\b[Bb][Yy]\s+' + re.escape(extracted_author), '', t)
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t = re.sub(r'-' + re.escape(extracted_author) + r'$', '', t)
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t = re.sub(r'&' + re.escape(extracted_author) + r'$', '', t)
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# 超长截短
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if len(t) > 100:
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m = re.search(r'[\u4e00-\u9fff]{2,}', t)
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if m:
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t = t[m.start():]
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t = t[:60].rstrip('，。；：、！？…\ufffd\'"').rstrip('.,;:!?\'').strip()
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t = re.sub(r'[\x00-\x08\x0b\x0c\x0e-\x1f]', '', t)
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t = shorten(t, 100).strip() or 'Unknown'
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return t, extracted_author
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db = LibraryDatabase('/home/yangxuan/calibre/books')
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count_clean = 0
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count_author = 0
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errors = []
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for bid in list(db.all_ids()):
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mi = db.get_metadata(bid)
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title = mi.title
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author_name = mi.authors[0] if mi.authors else 'Unknown'
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# 检测是否需要清洗书名
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need_clean = (
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len(title) > 100 or
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'<img' in title or '<BR' in title or
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'<font' in title or '\ufffd' in title or
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len(title.encode('utf-8')) > 150
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)
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# 检测是否需要提取作者（当前作者为 Unknown）
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need_author = (author_name == 'Unknown')
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if need_clean or need_author:
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new_title, extracted = clean_title_and_extract_author(title)
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changed = False
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if new_title and new_title != title:
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mi.title = new_title
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changed = True
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count_clean += 1
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if need_author and extracted:
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mi.authors = [extracted]
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changed = True
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count_author += 1
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if changed:
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try:
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db.set_metadata(bid, mi)
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except Exception as e:
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errors.append((bid, str(e)[:80]))
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print(f'书名清洗: {count_clean}')
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print(f'作者提取: {count_author}')
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print(f'错误: {len(errors)}')
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```
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## 常用操作
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### 查看 Unknown 作者的书
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```bash
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sqlite3 /home/yangxuan/calibre/books/metadata.db "
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SELECT b.id, b.title
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FROM books b
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JOIN books_authors_link l ON b.id = l.book
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JOIN authors a ON l.author = a.id
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WHERE a.name = 'Unknown'
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LIMIT 20;
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"
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# 统计
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sqlite3 /home/yangxuan/calibre/books/metadata.db "
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SELECT a.name, COUNT(*) as cnt
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FROM books b
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JOIN books_authors_link l ON b.id = l.book
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JOIN authors a ON l.author = a.id
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GROUP BY a.name
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ORDER BY cnt DESC
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LIMIT 20;
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"
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```
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### 运行清洗脚本
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```bash
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# 停服务 + 备份
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cd /home/yangxuan/calibre
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docker compose down
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cp books/metadata.db books/metadata.db.backup.$(date +%Y%m%d)
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killall calibre 2>/dev/null
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# 执行
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calibre-debug /tmp/fix_titles_v2.py
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# 重启
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docker compose up -d
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```
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## 已知问题
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### `set_metadata` 报 `Errno 36 文件名过长`
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当 `author_sort` 字段（基于作者名生成）超 80 字节时，Calibre 更新路径会触及 ext4 255 字节限制。此时需先清理极长作者名：
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```bash
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sqlite3 /home/yangxuan/calibre/books/metadata.db "
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UPDATE authors SET name='Unknown' WHERE LENGTH(name) > 30;
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"
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```
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然后重新执行脚本。 |