public static function FindStatisticFromFile($bookdir, $keyword)
 {
     if (!isset($keyword)) {
         return "";
     }
     $pathfilename = ChineseCharacterStatistic::BookDir2outfile($bookdir, true);
     syslog(0, $bookdir . $keyword);
     if (!file_exists($pathfilename)) {
         return $keyword;
     }
     //return $pathfilename . $keyword;
     $data = file_get_contents($pathfilename);
     if (false == $data) {
         syslog(0, "failed to read file:" . $pathfilename);
     }
     $bChinese = ChineseCharacterStatistic::IsChaninese($bookdir);
     $map = new MapChineseGbEnglishWord();
     $keyword = $map->getChineseGB($keyword, $bChinese);
     //ChineseCharacterStatistic::LanguageTranslate($bookdir, $keyword);
     $out = ChineseCharacterStatistic::FindStatisticFromData($data, $keyword);
     return $out;
 }