--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/app/django/contrib/localflavor/nl/forms.py	Fri Jul 18 18:22:23 2008 +0000
@@ -0,0 +1,100 @@
+"""
+NL-specific Form helpers
+"""
+
+import re
+
+from django.newforms import ValidationError
+from django.newforms.fields import Field, Select, EMPTY_VALUES
+from django.utils.translation import ugettext as _
+from django.utils.encoding import smart_unicode
+
+pc_re = re.compile('^\d{4}[A-Z]{2}$')
+sofi_re = re.compile('^\d{9}$')
+numeric_re = re.compile('^\d+$')
+
+class NLZipCodeField(Field):
+    """
+    A Dutch postal code field.
+    """
+    default_error_messages = {
+        'invalid': _('Enter a valid postal code'),
+    }
+
+    def clean(self, value):
+        super(NLZipCodeField, self).clean(value)
+        if value in EMPTY_VALUES:
+            return u''
+
+        value = value.strip().upper().replace(' ', '')
+        if not pc_re.search(value):
+            raise ValidationError(self.error_messages['invalid'])
+
+        if int(value[:4]) < 1000:
+            raise ValidationError(self.error_messages['invalid'])
+
+        return u'%s %s' % (value[:4], value[4:])
+
+class NLProvinceSelect(Select):
+    """
+    A Select widget that uses a list of provinces of the Netherlands as its
+    choices.
+    """
+    def __init__(self, attrs=None):
+        from nl_provinces import PROVINCE_CHOICES
+        super(NLProvinceSelect, self).__init__(attrs, choices=PROVINCE_CHOICES)
+
+class NLPhoneNumberField(Field):
+    """
+    A Dutch telephone number field.
+    """
+    default_error_messages = {
+        'invalid': _('Enter a valid phone number'),
+    }
+
+    def clean(self, value):
+        super(NLPhoneNumberField, self).clean(value)
+        if value in EMPTY_VALUES:
+            return u''
+
+        phone_nr = re.sub('[\-\s\(\)]', '', smart_unicode(value))
+
+        if len(phone_nr) == 10 and numeric_re.search(phone_nr):
+            return value
+
+        if phone_nr[:3] == '+31' and len(phone_nr) == 12 and \
+           numeric_re.search(phone_nr[3:]):
+            return value
+
+        raise ValidationError(self.error_messages['invalid'])
+
+class NLSoFiNumberField(Field):
+    """
+    A Dutch social security number (SoFi/BSN) field.
+
+    http://nl.wikipedia.org/wiki/Sofinummer
+    """
+    default_error_messages = {
+        'invalid': _('Enter a valid SoFi number'),
+    }
+
+    def clean(self, value):
+        super(NLSoFiNumberField, self).clean(value)
+        if value in EMPTY_VALUES:
+            return u''
+
+        if not sofi_re.search(value):
+            raise ValidationError(self.error_messages['invalid'])
+
+        if int(value) == 0:
+            raise ValidationError(self.error_messages['invalid'])
+
+        checksum = 0
+        for i in range(9, 1, -1):
+            checksum += int(value[9-i]) * i
+        checksum -= int(value[-1])
+
+        if checksum % 11 != 0:
+            raise ValidationError(self.error_messages['invalid'])
+
+        return value