Files
jiang13-bbs/frontend/app/admin/library/parseEpub.ts
freefire 4f3f3a265c feat: 友链/书库/移动端导航/排行榜等多模块功能
新增模块:
- 友链(friendlink)后端处理 + 前端管理页与友链板
- 书库(library):导入、章节、封面、阅读页、横竖版自适应 AdaptiveCoverSlot
- 顶栏导航(header_nav)配置与 MobileTabBar/MobileRailDrawers 移动端抽屉
- 排行榜 service 测试、站点页面测试、时间线发布(timeline_release)

其它改动:
- 后端 handlers/services 全量小幅调整
- 前端组件、库函数、URL/品牌/站点 URL 工具更新
- Lightbox 图片、MdEntries 条目卡、coverColor 派生色相等前端能力
2026-09-30 16:30:07 +08:00

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/**
* epub 导入解析(浏览器端):epub 本质是 zip + XHTML。
* 流程:JSZip 解压 → META-INF/container.xml 找 OPF → 按 spine 顺序读 XHTML
* → 清理(去 script/style、剔除内部相对路径图片)→ turndown 转 Markdown。
* 产物直接作为伪 .md 文件走现有批量导入接口,后端零改动。
* 两个依赖均在本模块内动态 import,避免打进主包。
*/
export interface EpubChapter {
title: string;
markdown: string;
}
/** 以 OPF 所在目录为基准解析 zip 内相对路径(处理 ./ ../ 与 URL 编码) */
function resolveZipPath(base: string, href: string): string {
const parts = `${base}${href}`.split("/");
const out: string[] = [];
for (const p of parts) {
if (!p || p === ".") continue;
if (p === "..") out.pop();
else out.push(p);
}
return out.join("/");
}
/** 清理标题里不适合做文件名的字符 */
function sanitizeTitle(t: string): string {
return t.replace(/[\\/:*?"<>|\n\r\t]+/g, " ").trim().slice(0, 60);
}
export async function parseEpub(file: File): Promise<EpubChapter[]> {
const { default: JSZip } = await import("jszip");
const { default: TurndownService } = await import("turndown");
const zip = await JSZip.loadAsync(await file.arrayBuffer()).catch(() => {
throw new Error("无法读取 epub:不是有效的 zip 文件");
});
// container.xml → OPF 路径
const containerEntry = zip.file("META-INF/container.xml");
if (!containerEntry) throw new Error("无法读取 epub:缺少 META-INF/container.xml");
const containerDoc = new DOMParser().parseFromString(await containerEntry.async("text"), "application/xml");
const rootfilePath = containerDoc.querySelector("rootfile")?.getAttribute("full-path");
if (!rootfilePath) throw new Error("无法读取 epub:container.xml 未声明 OPF 文件");
// OPF → manifest(id → href/mediaType)+ spine(阅读顺序)
const opfEntry = zip.file(rootfilePath) ?? zip.file(decodeURIComponent(rootfilePath));
if (!opfEntry) throw new Error(`无法读取 epub:缺少 OPF 文件 ${rootfilePath}`);
const opfDoc = new DOMParser().parseFromString(await opfEntry.async("text"), "application/xml");
const opfDir = rootfilePath.includes("/") ? rootfilePath.slice(0, rootfilePath.lastIndexOf("/") + 1) : "";
const manifest = new Map<string, { href: string; mediaType: string }>();
opfDoc.querySelectorAll("manifest > item").forEach((item) => {
const id = item.getAttribute("id");
const href = item.getAttribute("href");
if (id && href) manifest.set(id, { href, mediaType: item.getAttribute("media-type") ?? "" });
});
const spineIds = Array.from(opfDoc.querySelectorAll("spine > itemref"))
.map((el) => el.getAttribute("idref"))
.filter((id): id is string => !!id);
const td = new TurndownService({ headingStyle: "atx", codeBlockStyle: "fenced" });
const chapters: EpubChapter[] = [];
for (const id of spineIds) {
const item = manifest.get(id);
// spine 里也会有图片/样式等资源项,只处理 HTML 文档
if (!item || !/xhtml|html/i.test(item.mediaType)) continue;
const path = resolveZipPath(opfDir, item.href);
const entry = zip.file(path) ?? zip.file(decodeURIComponent(path));
if (!entry) continue;
const doc = new DOMParser().parseFromString(await entry.async("text"), "text/html");
doc.querySelectorAll("script, style").forEach((el) => el.remove());
// 内部相对路径图片导入后无法解析,剔除;外链 http(s) 图片保留
doc.querySelectorAll("img").forEach((img) => {
if (!/^https?:\/\//i.test(img.getAttribute("src") ?? "")) img.remove();
});
const body = doc.body;
if (!body) continue;
const markdown = td
.turndown(body.innerHTML)
.replace(/\n{3,}/g, "\n\n")
.trim();
if (!markdown) continue; // 封面页等纯图片页
const heading = Array.from(body.querySelectorAll("h1, h2, h3, h4, h5, h6")).find((h) => h.textContent?.trim());
const title = sanitizeTitle(heading?.textContent ?? doc.title ?? "") || `第 ${chapters.length + 1} 章`;
chapters.push({ title, markdown });
}
if (chapters.length === 0) throw new Error("未能从 epub 中解析出任何章节");
return chapters;
}