app/lib/publications/pdf-redirect.mjs

Functions

Imports

It imports app/lib/https-redirect.mjs. Imported by workers/app.ts.

Source

1// A paper's canonical URL is the slash form, because Google Scholar honors `citation_pdf_url` only when the
2// PDF sits in the abstract page's own subdirectory. Not a move: the slashless form was never the page.
3
4const PUBLICATIONS_PREFIX = "/research/publications/";
5
6// The HTTPS redirect's own rule, so the redirect helpers never disagree.
7export { httpsRedirectStatus as pdfRedirectStatus } from "../https-redirect.mjs";
8
9/**
10 * Skips anything with a dot so the PDF inside the directory still reaches the asset handler.
11 *
12 * @param {string} pathname
13 * @returns {string | null} the canonical path, or null
14 */
15export function paperSlashTarget(pathname) {
16  if (typeof pathname !== "string") return null;
17  if (!pathname.startsWith(PUBLICATIONS_PREFIX)) return null;
18  const rest = pathname.slice(PUBLICATIONS_PREFIX.length);
19  if (rest.length === 0) return null;
20  if (rest.includes("/")) return null;
21  if (rest.includes(".")) return null;
22  return `${pathname}/`;
23}