From c754d24b162ecd504f3c4bdd8632045dd0398768 Mon Sep 17 00:00:00 2001
From: nsfisis <nsfisis@gmail.com>
Date: Thu, 27 Nov 2025 05:05:04 +0900
Subject: feat(nuldoc): Djot to Markdown

---
 services/nuldoc/nuldoc-src/markdown/parse.ts | 47 ++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 services/nuldoc/nuldoc-src/markdown/parse.ts

(limited to 'services/nuldoc/nuldoc-src/markdown/parse.ts')

diff --git a/services/nuldoc/nuldoc-src/markdown/parse.ts b/services/nuldoc/nuldoc-src/markdown/parse.ts
new file mode 100644
index 0000000..c0875a2
--- /dev/null
+++ b/services/nuldoc/nuldoc-src/markdown/parse.ts
@@ -0,0 +1,47 @@
+import type { Root as MdastRoot } from "mdast";
+import { unified } from "unified";
+import remarkParse from "remark-parse";
+import remarkGfm from "remark-gfm";
+import remarkDirective from "remark-directive";
+import remarkSmartypants from "remark-smartypants";
+import { parse as parseToml } from "@std/toml";
+import { Config } from "../config.ts";
+import {
+  createNewDocumentFromMdast,
+  Document,
+  PostMetadata,
+  PostMetadataSchema,
+} from "./document.ts";
+import toHtml from "./to_html.ts";
+
+export async function parseMarkdownFile(
+  filePath: string,
+  config: Config,
+): Promise<Document> {
+  try {
+    const fileContent = await Deno.readTextFile(filePath);
+    const [, frontmatter, ...rest] = fileContent.split(/^---$/m);
+    const meta = parseMetadata(frontmatter);
+    const content = rest.join("---");
+
+    const processor = unified()
+      .use(remarkParse)
+      .use(remarkGfm)
+      .use(remarkDirective)
+      .use(remarkSmartypants);
+
+    const root = await processor.run(processor.parse(content)) as MdastRoot;
+
+    const doc = createNewDocumentFromMdast(root, meta, filePath, config);
+    return await toHtml(doc);
+  } catch (e) {
+    if (e instanceof Error) {
+      e.message = `${e.message} in ${filePath}`;
+    }
+    throw e;
+  }
+}
+
+function parseMetadata(s: string): PostMetadata {
+  return PostMetadataSchema.parse(parseToml(s));
+}
-- 
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