/**
* convert signature to text to remove all html tags and spaces/linebreaks, if the remains are empty -> set empty signature
*
* @param Expressomail_Model_Account $account
*/
protected function _checkSignature($account)
{
if (empty($account->signature)) {
return;
}
$plainTextSignature = Expressomail_Message::convertFromHTMLToText($account->signature, "\n");
if (!preg_match('/[^\\s^\\n]/', $plainTextSignature, $matches) && !preg_match('/<img id="?user-signature-image-?[0-9]*"? alt="?([^\\"]+)"? src="data:image\\/jpeg;base64,([^"]+)">/i', $account->signature, $imgmatches)) {
$account->signature = '';
}
}