server.mjs

// C++ OI Roadmap 本地静态服务器
// 启动: node server.mjs [port]  默认 8090
import http from 'node:http';
import fs from 'node:fs';
import path from 'node:path';
import { fileURLToPath } from 'node:url';

const __dirname = path.dirname(fileURLToPath(import.meta.url));
const port = parseInt(process.argv[2] || '8090', 10);
const root = __dirname;

const MIME = {
  '.html': 'text/html; charset=utf-8',
  '.css': 'text/css; charset=utf-8',
  '.js': 'application/javascript; charset=utf-8',
  '.mjs': 'application/javascript; charset=utf-8',
  '.json': 'application/json; charset=utf-8',
  '.png': 'image/png',
  '.jpg': 'image/jpeg',
  '.jpeg': 'image/jpeg',
  '.svg': 'image/svg+xml',
  '.ico': 'image/x-icon',
  '.txt': 'text/plain; charset=utf-8',
  '.md': 'text/markdown; charset=utf-8',
};

const server = http.createServer((req, res) => {
  let urlPath = decodeURIComponent(req.url.split('?')[0]);
  if (urlPath === '/') urlPath = '/index.html';
  const filePath = path.normalize(path.join(root, urlPath));
  if (!filePath.startsWith(root)) {
    res.writeHead(403); res.end('Forbidden'); return;
  }
  fs.readFile(filePath, (err, data) => {
    if (err) {
      res.writeHead(404, { 'Content-Type': 'text/plain; charset=utf-8' });
      res.end('404 Not Found: ' + urlPath);
      return;
    }
    const ext = path.extname(filePath).toLowerCase();
    res.writeHead(200, { 'Content-Type': MIME[ext] || 'application/octet-stream' });
    res.end(data);
  });
});

server.listen(port, () => {
  console.log('C++ OI Roadmap server on http://127.0.0.1:' + port + '/');
});