Function objectKeyForUrl

scripts/convert-mdnice-images-to-cdn.js:282–289

(url, prefix)

}

function objectKeyForUrl(url, prefix) {
  const parsed = new URL(url);
  const basename = sanitizeFileName(path.basename(parsed.pathname));
  const extension = path.extname(basename).toLowerCase();
  const hash = crypto.createHash("sha1").update(url).digest("hex").slice(0, 12);
  const fileName = basename && basename.length <= 120 ? `${hash}-${basename}` : `${hash}${extension || ".img"}`;
  return `${trimSlashes(prefix)}/${fileName}`;
}

function sanitizeFileName(fileName) {
  const decoded = safeDecodeURIComponent(fileName);