function getNextFile()
 {
     Applog::log("INSIDE " . __FILE__ . ' - ' . __CLASS__ . '::' . __FUNCTION__ . '() - ' . 'line ' . __LINE__, 4);
     while (1) {
         $crawledPage = CrawledPage::getNextDiacriticsFile();
         if ($crawledPage == null) {
             return null;
         }
         $this->showProcessingFileStatus($crawledPage);
         FilesUsedInDiacritics::save2Db($crawledPage->id);
         if (is_file($crawledPage->parsedTextPath) || $crawledPage->httpStatus < 400) {
             return $this->toLower(file_get_contents($crawledPage->parsedTextPath));
         }
     }
     return null;
 }