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import path from "node:path";
import fs from "node:fs/promises";
import { matter } from "toml-matter";
import * as marked from "marked";
type MatterFile = ReturnType<typeof matter>;
export type Post = {
input: string;
output: string;
basename: string;
url: string;
title: string;
date: Date;
description: string | undefined;
taxonomies: Record<string, string[]>;
};
export async function getPost(filename: string): Promise<MatterFile> {
return matter(await fs.readFile(filename, "utf8"));
}
export async function readPosts(
root: string,
inputDir: string,
outputDir: string,
): Promise<{ posts: Array<Post>; tags: Set<string> }> {
let tags = new Set<string>();
let posts = new Array<Post>();
const subdir = path.join(root, inputDir);
for (let pathname of await fs.readdir(subdir)) {
const pathFromDir = path.join(inputDir, pathname);
const pathFromRoot = path.join(subdir, pathname);
const stat = await fs.stat(pathFromRoot);
if (stat.isFile() && path.extname(pathname) === ".md") {
if (pathname !== "_index.md") {
const input = pathFromRoot;
const output = pathFromRoot
.replace(root, outputDir)
.replace(".md", "/index.html");
const url = pathFromRoot.replace(root, "").replace(".md", "/");
const file = await getPost(input);
file.data.taxonomies?.tags?.map((t: string) =>
tags.add(t.toLowerCase()),
);
posts.push({
input,
output,
basename: path.basename(pathname, ".md"),
url,
...file.data,
} as Post);
}
}
}
return {
posts: posts.sort((a, b) => b.date.getTime() - a.date.getTime()),
tags,
};
}
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