/**
  * @param File $file
  * @param bool $dumpContents
  * @return string
  */
 function writeUpload($file, $dumpContents = false)
 {
     if ($file->isOld()) {
         $archiveName = "      " . Xml::element('archivename', null, $file->getArchiveName()) . "\n";
     } else {
         $archiveName = '';
     }
     if ($dumpContents) {
         $be = $file->getRepo()->getBackend();
         # Dump file as base64
         # Uses only XML-safe characters, so does not need escaping
         # @todo Too bad this loads the contents into memory (script might swap)
         $contents = '      <contents encoding="base64">' . chunk_split(base64_encode($be->getFileContents(array('src' => $file->getPath())))) . "      </contents>\n";
     } else {
         $contents = '';
     }
     if ($file->isDeleted(File::DELETED_COMMENT)) {
         $comment = Xml::element('comment', array('deleted' => 'deleted'));
     } else {
         $comment = Xml::elementClean('comment', null, $file->getDescription());
     }
     return "    <upload>\n" . $this->writeTimestamp($file->getTimestamp()) . $this->writeContributor($file->getUser('id'), $file->getUser('text')) . "      " . $comment . "\n" . "      " . Xml::element('filename', null, $file->getName()) . "\n" . $archiveName . "      " . Xml::element('src', null, $file->getCanonicalURL()) . "\n" . "      " . Xml::element('size', null, $file->getSize()) . "\n" . "      " . Xml::element('sha1base36', null, $file->getSha1()) . "\n" . "      " . Xml::element('rel', null, $file->getRel()) . "\n" . $contents . "    </upload>\n";
 }