curl-url-decode.mjs

#!/usr/bin/env node

// Use curl to download a URL to a file whose name is URL-decoded
// Related: https://github.com/curl/curl/issues/2573

import {execSync} from 'node:child_process';
// Documentation for node:child_process – https://exploringjs.com/nodejs-shell-scripting/ch_nodejs-child-process.html

export const WEB_PATH_SEP = '/';
export function getWebBasename(webPath) {
  const sepIndex = webPath.lastIndexOf(WEB_PATH_SEP);
  if (sepIndex < 0) {
    return webPath;
  }
  return webPath.slice(sepIndex + WEB_PATH_SEP.length);
}

const urlStr = process.argv[2];
const basename = getWebBasename(new URL(urlStr).pathname);
// --location: follow redirects
execSync(
  `curl '${urlStr}' --location --output '${decodeURIComponent(basename)}'`,
  {stdio: 'inherit'}
);