feat: PeopleLib 开放文献客户端，集成 Z-Library 与 LibGen 等多源检索

Electron 桌面客户端，聚合多个开放获取文献源的搜索、详情与下载。新增数据源： - Z-Library：邮箱登录（凭据本地存储），会话失效自动重登 - LibGen：适配新版 libgen.ac 前端（旧版 search.php 镜像已全部下线） - Memory of the World、Sci-Hub、Anna's Archive 基础设施： - mirror.js：镜像故障转移，支持串行优先与并发竞速两种策略，失效镜像 5 分钟冷却后自动重试，避免站点恢复后被永久跳过 - http.js：统一 15 秒请求超时，防止单个卡死镜像拖垮整次搜索 - settings.js：全局代理配置持久化，经 Electron net.fetch 生效于所有请求 Co-authored-by: factory-droid[bot] <138933559+factory-droid[bot]@users.noreply.github.com>
2026-07-25 14:51:10 +08:00
commit 1a1288ce18
33 changed files with 4640 additions and 0 deletions
@@ -0,0 +1,91 @@
+const { fetchText, clampPage, decodeEntities } = require('./http');
+
+const BASE = 'https://standardebooks.org';
+const PAGE_SIZE = 24;
+
+async function fetchOpds(path) {
+  return fetchText(`${BASE}${path}`, { headers: { 'Accept': 'application/atom+xml, text/xml, */*' } });
+}
+
+function parseEntries(xml) {
+  const entries = [];
+  const re = /<entry>([\s\S]*?)<\/entry>/g;
+  let m;
+  while ((m = re.exec(xml))) {
+    const e = m[1];
+    const title = decodeEntities((e.match(/<title>([\s\S]*?)<\/title>/) || [])[1] || '').trim();
+    const id = decodeEntities((e.match(/<id>([\s\S]*?)<\/id>/) || [])[1] || '').trim();
+    const author = decodeEntities((e.match(/<author>[\s\S]*?<name>([\s\S]*?)<\/name>[\s\S]*?<\/author>/) || [])[1] || '').trim();
+    const summary = decodeEntities((e.match(/<summary>([\s\S]*?)<\/summary>/) || [])[1] || '').replace(/<[^>]*>/g, ' ').replace(/\s+/g, ' ').trim();
+    let epub = '', cover = '', pageUrl = '';
+    const lre = /<link[^>]*\/>/g;
+    let l;
+    while ((l = lre.exec(e))) {
+      const tag = l[0];
+      const href = (tag.match(/href="([^"]+)"/) || [])[1] || '';
+      const rel = (tag.match(/rel="([^"]+)"/) || [])[1] || '';
+      if (/epub/i.test(tag) && !epub) epub = href;
+      else if (/image/.test(tag) && !cover) cover = href;
+      else if (rel === 'alternate' && !pageUrl) pageUrl = href;
+    }
+    const slug = id.replace(/^urn:uuid:|^https?:\/\/standardebooks\.org\/ebooks\//, '').replace(/\//g, '_') || title;
+    entries.push({ slug, title, author, summary, epub, cover, pageUrl });
+  }
+  return entries;
+}
+
+function toItem(e) {
+  return {
+    postId: encodeURIComponent(e.slug),
+    title: e.title,
+    cover: e.cover ? (e.cover.startsWith('http') ? e.cover : BASE + e.cover) : '',
+    date: '',
+    url: e.pageUrl ? (e.pageUrl.startsWith('http') ? e.pageUrl : BASE + e.pageUrl) : '',
+    subtitle: e.author
+  };
+}
+
+module.exports = {
+  id: 'standardebooks',
+  name: 'Standard Ebooks',
+  supportsSearch: true,
+
+  async list(page) {
+    page = clampPage(page);
+    const xml = await fetchOpds(`/feeds/opds/all?page=${page}`);
+    return { items: parseEntries(xml).map(toItem), maxPage: 40, page };
+  },
+
+  async search(keyword, page) {
+    page = clampPage(page);
+    const xml = await fetchOpds(`/feeds/opds/all?query=${encodeURIComponent(keyword)}&page=${page}`);
+    return { items: parseEntries(xml).map(toItem), maxPage: 40, page };
+  },
+
+  async detail(postId) {
+    const slug = decodeURIComponent(postId);
+    const xml = await fetchOpds(`/feeds/opds/all?query=${encodeURIComponent(slug.replace(/_/g, ' '))}`);
+    const e = parseEntries(xml).find((x) => x.slug === slug) || parseEntries(xml)[0];
+    if (!e) throw new Error('未找到该图书');
+    return {
+      postId,
+      title: e.title,
+      cover: e.cover ? (e.cover.startsWith('http') ? e.cover : BASE + e.cover) : '',
+      authors: e.author ? [e.author] : [],
+      date: '',
+      tags: [],
+      brief: e.summary,
+      url: e.pageUrl,
+      links: e.pageUrl ? [{ name: 'Standard Ebooks 页', url: e.pageUrl }] : []
+    };
+  },
+
+  async download(postId) {
+    const slug = decodeURIComponent(postId);
+    const xml = await fetchOpds(`/feeds/opds/all?query=${encodeURIComponent(slug.replace(/_/g, ' '))}`);
+    const e = parseEntries(xml).find((x) => x.slug === slug) || parseEntries(xml)[0];
+    if (!e || !e.epub) throw new Error('未找到 EPUB 下载');
+    const url = e.epub.startsWith('http') ? e.epub : BASE + e.epub;
+    return { files: [{ name: `${e.title.replace(/[\\/:*?"<>|]/g, '_').slice(0, 60)}.epub`, link: url, format: 'EPUB' }], links: [] };
+  }
+};