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+---
+name: "calibre-cleaner"
+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"
+status: proposal
+version: "v1"
+date: "2026-06-24T03:03:28.166Z"
+---
+
+# Calibre 书库清洗 Skill
+
+## 概述
+
+Calibre 书库整理三件套：
+
+1. **书名清洗** —— 修复从 txt 导入产生的 HTML 标签/长文本/乱码书名
+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）
+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
+
+## 前置条件
+
+- 书库路径：`/home/yangxuan/calibre/books`
+- 元数据文件：`/home/yangxuan/calibre/books/metadata.db`
+- 运行前须停止其他 Calibre 进程（桌面版、Docker Calibre-Web）
+- 运行前 **必须备份** `metadata.db`
+
+---
+
+## 一、书名清洗 & 作者提取
+
+### `shorten(s, max_bytes=120)`
+
+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。
+
+```python
+def shorten(s, max_bytes=120):
+    encoded = s.encode('utf-8')
+    if len(encoded) <= max_bytes:
+        return s
+    try:
+        return encoded[:max_bytes].decode('utf-8')
+    except:
+        return encoded[:max_bytes-3].decode('utf-8', errors='ignore')
+```
+
+### `clean_title(title)`
+
+```python
+def clean_title(title):
+    t = title
+    # 移除 HTML 标签
+    t = re.sub(r'<[^>]+>', '', t)
+    # 替换 _BR_ / _BR 标记
+    t = re.sub(r'_BR_', ' ', t, flags=re.IGNORECASE)
+    t = re.sub(r'_BR(?![a-zA-Z])', ' ', t)
+    # 移除 _fontxxx_ / _imgxxx_ 标记
+    t = re.sub(r'_font[^_]*_', '', t)
+    t = re.sub(r'_img[^_]*_', '', t)
+    # 合并多余空格
+    t = re.sub(r'\s+', ' ', t).strip()
+    # 超长截短
+    if len(t) > 100:
+        m = re.search(r'[\u4e00-\u9fff]{2,}', t)
+        if m:
+            t = t[m.start():]
+        t = t[:60].rstrip('，。；：、！？…\ufffd\'"').rstrip('.,;:!?\'').strip()
+    # 移除控制字符
+    t = re.sub(r'[\x00-\x08\x0b\x0c\x0e-\x1f]', '', t)
+    return shorten(t, 100).strip() or 'Unknown'
+```
+
+### 作者提取规则（从书名中提取）
+
+格式 | 示例 | 正则
+---|---|---
+`作者：xxx`（中文冒号） | `...作者：镜欲` | `作者[：:]\s*([^\s,，、\)）]+)`
+`作者:xxx`（英文冒号） | `...作者:镜欲` | 同上
+`-xxx`（英文 dash 结尾） | `善良的美艳妈妈-糠麸` | `-([^-()【】\[\]]+)$`
+`翻译：xxx` | `...翻译：kkmanlg` | `翻译[：:]\s*([^\s,，、\)）]+)`
+`BY xxx`（英文 BY） | `...BY狱厨` | `\b[Bb][Yy]\s+([^\s,，、\)）]+)`
+`&xxx`（and 符结尾） | `...&axenic` | `&([^&()【】\[\] ]+)$`
+
+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]`。
+
+```python
+EXCLUDE_AUTHORS = {'正文', '内容简介', ''}
+
+def extract_author_from_title(title):
+    m = re.search(r'作者[：:]\s*([^\s,，、\)）《\[]+)', title)
+    if m:
+        name = m.group(1).strip()
+        if name not in EXCLUDE_AUTHORS and not re.match(r'^第\d+[章节]', name):
+            return name
+    m = re.search(r'翻译[：:]\s*([^\s,，、\)）《\[]+)', title)
+    if m:
+        return m.group(1).strip()
+    m = re.search(r'\b[Bb][Yy]\s+([^\s,，、\)）《\[]+)', title)
+    if m:
+        name = m.group(1).strip()
+        if name not in EXCLUDE_AUTHORS:
+            return name
+    m = re.search(r'-([^-()【】\[\]{}《》\s]{2,30})$', title)
+    if m:
+        name = m.group(1).strip()
+        if name not in EXCLUDE_AUTHORS and not re.match(r'^\d+', name):
+            return name
+    m = re.search(r'&([^&()【】\[\]\s]{2,30})$', title)
+    if m:
+        name = m.group(1).strip()
+        if name not in EXCLUDE_AUTHORS:
+            return name
+    return None
+```
+
+### 坏书检测条件
+
+```python
+is_bad = (
+    len(title) > 100 or
+    '<img' in title or '<BR' in title or '<font' in title or
+    '\ufffd' in title or
+    len(title.encode('utf-8')) > 150
+)
+```
+
+---
+
+## 二、脏数据清理
+
+### 2.1 检测条件
+
+扫描书库中所有 TXT 文件，读取前 20KB 检测中文比例：
+
+- **内容损坏/二进制垃圾**：中文比例 < 10%（标记为待删除）
+- **小文件垃圾**：`uncompressed_size < 10240`（10KB 以下）
+
+```python
+with open(full_path, 'rb') as f:
+    raw = f.read(20480)
+text = raw.decode('utf-8', errors='replace')
+chinese = sum(1 for c in text if '\u4e00' <= c <= '\u9fff')
+ratio = chinese / len(text) if len(text) > 0 else 0
+
+if ratio < 0.10:   # 内容损坏，删除
+if size < 10240:   # 小文件垃圾，删除
+```
+
+### 2.2 批量删除（通过 SQLite 直写）
+
+停掉 calibre 进程后，通过 SQLite 删除记录并清理文件系统：
+
+```sql
+DELETE FROM data WHERE book = ?
+DELETE FROM books_authors_link WHERE book = ?
+DELETE FROM books_languages_link WHERE book = ?
+DELETE FROM books_publishers_link WHERE book = ?
+DELETE FROM books_series_link WHERE book = ?
+DELETE FROM books_tags_link WHERE book = ?
+DELETE FROM comments WHERE book = ?
+DELETE FROM identifiers WHERE book = ?
+DELETE FROM books WHERE id = ?
+```
+
+同时删除对应目录：`shutil.rmtree(os.path.join('/home/yangxuan/calibre/books', bpath))`
+
+### 2.3 完整删除脚本
+
+```python
+import sqlite3, os, shutil
+
+db_path = '/home/yangxuan/calibre/books/metadata.db'
+conn = sqlite3.connect(db_path)
+c = conn.cursor()
+
+c.execute('''
+    SELECT b.id, b.title, b.path, d.name, d.uncompressed_size
+    FROM books b 
+    JOIN data d ON d.book = b.id 
+    WHERE d.format = 'TXT'
+''')
+rows = c.fetchall()
+
+to_delete = []
+
+for bid, title, bpath, fname, size in rows:
+    full_path = os.path.join('/home/yangxuan/calibre/books', bpath, fname + '.txt')
+    if not os.path.exists(full_path):
+        continue
+    
+    # 条件1：小文件垃圾
+    if size < 10240:
+        to_delete.append((bid, bpath))
+        continue
+    
+    # 条件2：内容损坏（中文 < 10%）
+    with open(full_path, 'rb') as f:
+        raw = f.read(20480)
+    text = raw.decode('utf-8', errors='replace')
+    chinese = sum(1 for c in text if '\u4e00' <= c <= '\u9fff')
+    ratio = chinese / len(text) if len(text) > 0 else 0
+    if ratio < 0.10:
+        to_delete.append((bid, bpath))
+
+print(f"待删除: {len(to_delete)}", flush=True)
+for bid, bpath in to_delete:
+    c.execute('DELETE FROM data WHERE book=?', (bid,))
+    c.execute('DELETE FROM books_authors_link WHERE book=?', (bid,))
+    c.execute('DELETE FROM books_languages_link WHERE book=?', (bid,))
+    c.execute('DELETE FROM books_publishers_link WHERE book=?', (bid,))
+    c.execute('DELETE FROM books_series_link WHERE book=?', (bid,))
+    c.execute('DELETE FROM books_tags_link WHERE book=?', (bid,))
+    c.execute('DELETE FROM comments WHERE book=?', (bid,))
+    c.execute('DELETE FROM identifiers WHERE book=?', (bid,))
+    c.execute('DELETE FROM books WHERE id=?', (bid,))
+    full_dir = os.path.join('/home/yangxuan/calibre/books', bpath)
+    if os.path.exists(full_dir):
+        shutil.rmtree(full_dir)
+
+conn.commit()
+conn.close()
+print(f"完成，删除: {len(to_delete)}", flush=True)
+```
+
+---
+
+## 三、常用操作
+
+### 3.1 查看 XX 作者的书
+
+```bash
+sqlite3 /home/yangxuan/calibre/books/metadata.db "
+SELECT b.id, b.title
+FROM books b JOIN books_authors_link l ON b.id = l.book
+JOIN authors a ON l.author = a.id
+WHERE a.name = 'Unknown'
+LIMIT 20;
+"
+```
+
+### 3.2 统计作者分布
+
+```bash
+sqlite3 /home/yangxuan/calibre/books/metadata.db "
+SELECT a.name, COUNT(*) as cnt
+FROM books b JOIN books_authors_link l ON b.id = l.book
+JOIN authors a ON l.author = a.id
+GROUP BY a.name ORDER BY cnt DESC LIMIT 20;
+"
+```
+
+### 3.3 书库统计
+
+```bash
+python3 -c "
+import sqlite3
+conn = sqlite3.connect('/home/yangxuan/calibre/books/metadata.db')
+c = conn.cursor()
+c.execute('SELECT COUNT(*) FROM books')
+print(f'总书籍: {c.fetchone()[0]}')
+c.execute('SELECT COUNT(*) FROM data WHERE format=\"TXT\"')
+print(f'TXT 文件: {c.fetchone()[0]}')
+conn.close()
+"
+```
+
+---
+
+## 四、操作流程（推荐顺序）
+
+```bash
+cd /home/yangxuan/calibre
+
+# 1. 停服务 + 备份
+docker compose down
+cp books/metadata.db books/metadata.db.backup.$(date +%Y%m%d)
+killall calibre 2>/dev/null
+
+# 2. 脏数据清理（内容损坏 + 小文件）
+python3 /path/to/clean_dirty_data.py
+
+# 3. 书名清洗 & 作者提取
+calibre-debug /path/to/fix_titles.py
+
+# 4. 重启
+docker compose up -d
+```
+
+---
+
+## 五、已知问题
+
+### `set_metadata` 报 `Errno 36 文件名过长`
+
+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：
+
+```bash
+sqlite3 /home/yangxuan/calibre/books/metadata.db "
+UPDATE authors SET name='Unknown' WHERE LENGTH(name) > 30;
+"
+```
+
+### WSL `/mnt/f` 删除 NTFS 文件权限不够
+
+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。