303 lines
8.8 KiB
Markdown
303 lines
8.8 KiB
Markdown
---
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name: "calibre-cleaner"
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description: "清洗 Calibre 书库：修复损坏书名/提取作者/检测编码损坏、小文件的批量删除"
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status: proposal
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version: "v1"
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date: "2026-06-24T03:03:28.166Z"
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---
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# Calibre 书库清洗 Skill
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## 概述
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Calibre 书库整理三件套：
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1. **书名清洗** —— 修复从 txt 导入产生的 HTML 标签/长文本/乱码书名
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2. **作者提取** —— 从书名中自动提取作者名（匹配 `作者：xxx`、`-xxx`、`BY xxx` 等格式）
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3. **脏数据清理** —— 检测并删除内容损坏的 txt（中文 < 10%）以及小于 10KB 的垃圾文件
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## 前置条件
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- 书库路径：`/home/yangxuan/calibre/books`
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- 元数据文件：`/home/yangxuan/calibre/books/metadata.db`
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- 运行前须停止其他 Calibre 进程（桌面版、Docker Calibre-Web）
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- 运行前 **必须备份** `metadata.db`
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---
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## 一、书名清洗 & 作者提取
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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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### 作者提取规则（从书名中提取）
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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：先匹配 `作者：` → `-xxx` → `翻译：` → `BY` → `&xxx`。排除项：`正文`、`内容简介`、`第\\d+[章节]`。
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```python
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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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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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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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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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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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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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```
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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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---
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## 二、脏数据清理
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### 2.1 检测条件
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扫描书库中所有 TXT 文件，读取前 20KB 检测中文比例：
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- **内容损坏/二进制垃圾**：中文比例 < 10%（标记为待删除）
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- **小文件垃圾**：`uncompressed_size < 10240`（10KB 以下）
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```python
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with open(full_path, 'rb') as f:
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raw = f.read(20480)
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text = raw.decode('utf-8', errors='replace')
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chinese = sum(1 for c in text if '\u4e00' <= c <= '\u9fff')
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ratio = chinese / len(text) if len(text) > 0 else 0
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if ratio < 0.10: # 内容损坏，删除
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if size < 10240: # 小文件垃圾，删除
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```
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### 2.2 批量删除（通过 SQLite 直写）
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停掉 calibre 进程后，通过 SQLite 删除记录并清理文件系统：
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```sql
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DELETE FROM data WHERE book = ?
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DELETE FROM books_authors_link WHERE book = ?
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DELETE FROM books_languages_link WHERE book = ?
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DELETE FROM books_publishers_link WHERE book = ?
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DELETE FROM books_series_link WHERE book = ?
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DELETE FROM books_tags_link WHERE book = ?
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DELETE FROM comments WHERE book = ?
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DELETE FROM identifiers WHERE book = ?
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DELETE FROM books WHERE id = ?
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```
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同时删除对应目录：`shutil.rmtree(os.path.join('/home/yangxuan/calibre/books', bpath))`
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### 2.3 完整删除脚本
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```python
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import sqlite3, os, shutil
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db_path = '/home/yangxuan/calibre/books/metadata.db'
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conn = sqlite3.connect(db_path)
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c = conn.cursor()
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c.execute('''
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SELECT b.id, b.title, b.path, d.name, d.uncompressed_size
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FROM books b
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JOIN data d ON d.book = b.id
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WHERE d.format = 'TXT'
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''')
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rows = c.fetchall()
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to_delete = []
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for bid, title, bpath, fname, size in rows:
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full_path = os.path.join('/home/yangxuan/calibre/books', bpath, fname + '.txt')
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if not os.path.exists(full_path):
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continue
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# 条件1：小文件垃圾
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if size < 10240:
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to_delete.append((bid, bpath))
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continue
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# 条件2：内容损坏（中文 < 10%）
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with open(full_path, 'rb') as f:
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raw = f.read(20480)
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text = raw.decode('utf-8', errors='replace')
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chinese = sum(1 for c in text if '\u4e00' <= c <= '\u9fff')
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ratio = chinese / len(text) if len(text) > 0 else 0
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if ratio < 0.10:
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to_delete.append((bid, bpath))
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print(f"待删除: {len(to_delete)}", flush=True)
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for bid, bpath in to_delete:
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c.execute('DELETE FROM data WHERE book=?', (bid,))
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c.execute('DELETE FROM books_authors_link WHERE book=?', (bid,))
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c.execute('DELETE FROM books_languages_link WHERE book=?', (bid,))
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c.execute('DELETE FROM books_publishers_link WHERE book=?', (bid,))
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c.execute('DELETE FROM books_series_link WHERE book=?', (bid,))
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c.execute('DELETE FROM books_tags_link WHERE book=?', (bid,))
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c.execute('DELETE FROM comments WHERE book=?', (bid,))
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c.execute('DELETE FROM identifiers WHERE book=?', (bid,))
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c.execute('DELETE FROM books WHERE id=?', (bid,))
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full_dir = os.path.join('/home/yangxuan/calibre/books', bpath)
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if os.path.exists(full_dir):
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shutil.rmtree(full_dir)
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conn.commit()
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conn.close()
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print(f"完成，删除: {len(to_delete)}", flush=True)
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```
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---
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## 三、常用操作
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### 3.1 查看 XX 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 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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```
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### 3.2 统计作者分布
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```bash
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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 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 ORDER BY cnt DESC LIMIT 20;
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"
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```
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### 3.3 书库统计
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```bash
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python3 -c "
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import sqlite3
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conn = sqlite3.connect('/home/yangxuan/calibre/books/metadata.db')
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c = conn.cursor()
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c.execute('SELECT COUNT(*) FROM books')
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print(f'总书籍: {c.fetchone()[0]}')
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c.execute('SELECT COUNT(*) FROM data WHERE format=\"TXT\"')
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print(f'TXT 文件: {c.fetchone()[0]}')
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conn.close()
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"
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```
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---
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## 四、操作流程（推荐顺序）
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```bash
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cd /home/yangxuan/calibre
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# 1. 停服务 + 备份
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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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# 2. 脏数据清理（内容损坏 + 小文件）
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python3 /path/to/clean_dirty_data.py
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# 3. 书名清洗 & 作者提取
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calibre-debug /path/to/fix_titles.py
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# 4. 重启
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docker compose up -d
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```
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---
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## 五、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` 字段超 80 字节时，Calibre 路径会触及 ext4 255 字节限制。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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### WSL `/mnt/f` 删除 NTFS 文件权限不够
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WSL 的 drvfs 默认不带 metadata 选项，`sudo rm`、`os.remove`、`cmd.exe /c del` 均无法删除 NTFS 文件。不要在 WSL 下尝试跨分区删除操作，直接让 Windows 侧（文件资源管理器/PowerShell）操作。 |