# -*- coding: utf-8 -*-
from django.core.validators import RegexValidator
from django.utils.translation import gettext_lazy as _


DAVNumberValidator = RegexValidator(r'^'
                                    r'([0-9]{1,10}/[0-9]{2,10}/)?'
                                    r'[0-9]{1,10}'
                                    r'(\*[0-9]{1,10})?'
                                    r'(\*[0-9]{4}\*[0-9]{4})?'
                                    r'([* ][0-9]{8})?'
                                    r'$',
                                    _('Ungültiges Format.'))