mirror of
https://github.com/byoungd/up.git
synced 2026-10-20 05:59:56 +08:00
81 lines
3.8 KiB
JavaScript
81 lines
3.8 KiB
JavaScript
import { fromMarkdown } from "mdast-util-from-markdown";
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import { toMarkdown } from "mdast-util-to-markdown";
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import { gfmFromMarkdown, gfmToMarkdown } from "mdast-util-gfm";
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import { gfm } from "micromark-extension-gfm";
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import { enNavigation, zhNavigation } from "../docs/.vitepress/navigation.mjs";
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const site = "https://byoungd.github.io";
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const base = "/up/";
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const routes = new Map([...zhNavigation, ...enNavigation].flatMap(({ items }) => items.map(({ source, link }) => [source, link])));
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const directoryRoutes = new Set(
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[...zhNavigation, ...enNavigation].flatMap(({ items }) =>
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items.filter(({ source }) => /(?:^|\/)(?:README|index)\.md$/.test(source))
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.map(({ link }) => link.replace(/^\/+|\/+$/g, "")),
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),
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);
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function publicRoutePath(route, routeBase = base) {
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const clean = route.replace(/^\/+|\/+$/g, "");
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return `${routeBase}${clean}${clean && directoryRoutes.has(clean) ? "/" : ""}`;
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}
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const parse = (source) => fromMarkdown(source, { extensions: [gfm()], mdastExtensions: [gfmFromMarkdown()] });
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function preserveFormLines(node) {
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if (!node.children) return;
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if (node.type === "paragraph") {
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node.children = node.children.flatMap((child) => {
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if (child.type !== "text" || !child.value.includes("\n")) return [child];
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return child.value.split("\n").flatMap((value, index) => [
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...(index ? [{ type: "break" }] : []), { type: "text", value },
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]);
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});
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}
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node.children.forEach(preserveFormLines);
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}
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function portableUrl(value, source) {
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if (value.startsWith("#")) return value;
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if (/^(?:https?:|mailto:|tel:|\/\/)/i.test(value)) return value;
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if (/^[a-z][\w+.-]*:/i.test(value)) throw new Error(`Unsupported worksheet link scheme: ${value}`);
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// Site-root paths are relative to the book's deployment base, not its host.
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const url = new URL(value.startsWith("/") ? `${base}${value.replace(/^\/+/, "")}` : value, `${site}${base}${source}`);
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const relative = decodeURIComponent(url.pathname.slice(base.length));
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const route = routes.get(relative);
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if (route) url.pathname = publicRoutePath(route, base);
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return url.href;
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}
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export function worksheetMarkdown(source, { source: sourcePath, locale }) {
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const frontmatter = source.match(/^---\r?\n([\s\S]*?)\r?\n---\r?\n/);
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const body = frontmatter ? source.slice(frontmatter[0].length) : source;
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const updated = frontmatter?.[1].match(/^updated:\s*(\d{4}-\d{2}-\d{2})\s*$/m)?.[1];
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const tree = parse(body);
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function transform(parent, depth = 1) {
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if (!parent.children) return;
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const result = [];
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for (const child of parent.children) {
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if (child.type === "heading") depth = child.depth;
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if (child.type === "code" && child.lang?.toLowerCase() === "markdown") {
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const form = parse(child.value);
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preserveFormLines(form);
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for (const node of form.children) {
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if (node.type === "heading") node.depth = Math.min(6, depth + node.depth);
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}
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transform(form, depth);
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result.push(...form.children);
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continue;
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}
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if (["link", "image", "definition"].includes(child.type)) child.url = portableUrl(child.url, sourcePath);
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transform(child, depth);
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result.push(child);
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}
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parent.children = result;
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}
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transform(tree);
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const sourceUrl = `${site}${publicRoutePath(routes.get(sourcePath) || sourcePath.replace(/\.md$/, ""), base)}`;
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const credit = locale === "en"
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? `Source: [Life Level-up Guide](${sourceUrl})${updated ? ` · Manuscript updated: ${updated}` : ""}. Content: [CC BY-NC 4.0](https://creativecommons.org/licenses/by-nc/4.0/).`
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: `来源：[人生进阶指南](${sourceUrl})${updated ? ` · 稿件更新：${updated}` : ""}。内容许可：[CC BY-NC 4.0](https://creativecommons.org/licenses/by-nc/4.0/)。`;
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return `${toMarkdown(tree, { extensions: [gfmToMarkdown()], bullet: "-", fences: true }).trim()}\n\n---\n\n${credit}\n`;
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}
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