/**
* @return string
*/
public function FileName($bCalculateOnEmpty = false)
{
$sFileName = '';
if ($this->oBodyStructure) {
$sFileName = $this->oBodyStructure->FileName();
if ($bCalculateOnEmpty && 0 === strlen(trim($sFileName))) {
$sMimeType = strtolower(trim($this->MimeType()));
if ('message/rfc822' === $sMimeType) {
$sFileName = 'message' . $this->MimeIndex() . '.eml';
} else {
if ('text/calendar' === $sMimeType) {
$sFileName = 'calendar' . $this->MimeIndex() . '.ics';
} else {
if ('text/vcard' === $sMimeType || 'text/x-vcard' === $sMimeType) {
$sFileName = 'contacts' . $this->MimeIndex() . '.vcf';
} else {
if (!empty($sMimeType)) {
$sFileName = str_replace('/', $this->MimeIndex() . '.', $sMimeType);
}
}
}
}
}
}
return $sFileName;
}
