/** * @private * * @todo Internationalize the CE and BCE strings. * * Compute a suitable string to display the given date item. * * @note MediaWiki's date functions are not applicable for the range of * historic dates we support. * * @since 2.4 * * @param DITime $dataitem * * @return string */ public function getCaptionFromDataItem(DITime $dataItem) { // If the language code is empty then the content language code is used $extraneousLanguage = Localizer::getInstance()->getExtraneousLanguage(Localizer::getInstance()->getContentLanguage()); // https://en.wikipedia.org/wiki/Anno_Domini // "...placing the "AD" abbreviation before the year number ... BC is // placed after the year number (for example: AD 2016, but 68 BC)..." // Chicago Manual of Style 2010, pp. 476–7; Goldstein 2007, p. 6. if ($dataItem->getYear() > 0) { $cestring = $dataItem->getEra() > 0 ? 'AD' : ''; $result = ($cestring ? $cestring . ' ' : '') . number_format($dataItem->getYear(), 0, '.', ''); } else { $bcestring = 'BC'; $result = number_format(-$dataItem->getYear(), 0, '.', '') . ($bcestring ? ' ' . $bcestring : ''); } if ($dataItem->getPrecision() >= DITime::PREC_YM) { $result = $extraneousLanguage->getMonthLabel($dataItem->getMonth()) . " " . $result; } if ($dataItem->getPrecision() >= DITime::PREC_YMD) { $result = $dataItem->getDay() . " " . $result; } if ($dataItem->getPrecision() >= DITime::PREC_YMDT) { $result .= " " . $this->getTimeString(); } $result .= $this->hintCalendarModel($dataItem); return $result; }