/**
* @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;
}
