static L<Web> readWebsLog(File log, S src) {
  IterableIterator<SoftwareMadeWeb> l = scanLog_unstructure_iterator(log);
  new L<Web> webs;
  for (SoftwareMadeWeb o : l) pcall {
    Web web = o.web;
    if (web == null)
      web = (Web) unstructure(o.structure);
    if (web != null)
      webs.add(web_intern(web_setSourceIfEmpty(web, src)));
  }
  ret webs;
}