Fixed #3957, #3945 -- Added CPF and CNPJ (some Brazilian identity numbers)

fields to the Brazilian localflavor. Thanks, onaiort@gmail.com and
danielvaz@gmail.com.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@5089 bcc190cf-cafb-0310-a4f2-bffc1f526a37

1 files changed, 82 insertions, 2 deletions

diff --git a/django/contrib/localflavor/br/forms.py b/django/contrib/localflavor/br/forms.py
index 29ad4df53d..0ec370546f 100644
--- a/django/contrib/localflavor/br/forms.py
+++ b/django/contrib/localflavor/br/forms.py
@@ -4,7 +4,7 @@ BR-specific Form helpers
 """
 
 from django.newforms import ValidationError
-from django.newforms.fields import Field, RegexField, Select, EMPTY_VALUES
+from django.newforms.fields import Field, RegexField, CharField, Select, EMPTY_VALUES
 from django.utils.encoding import smart_unicode
 from django.utils.translation import gettext
 import re
@@ -15,7 +15,7 @@ class BRZipCodeField(RegexField):
     def __init__(self, *args, **kwargs):
         super(BRZipCodeField, self).__init__(r'^\d{5}-\d{3}$',
             max_length=None, min_length=None,
-            error_message=gettext(u'Enter a zip code in the format XXXXX-XXX.'),
+            error_message=gettext('Enter a zip code in the format XXXXX-XXX.'),
             *args, **kwargs)
 
 class BRPhoneNumberField(Field):
@@ -37,3 +37,83 @@ class BRStateSelect(Select):
     def __init__(self, attrs=None):
         from br_states import STATE_CHOICES # relative import
         super(BRStateSelect, self).__init__(attrs, choices=STATE_CHOICES)
+
+
+def DV_maker(v):
+    if v >= 2:
+        return 11 - v
+    return 0
+
+class BRCPFField(CharField):
+    """
+    This field validate a CPF number or a CPF string. A CPF number is
+    compounded by XXX.XXX.XXX-VD, the two last digits are check digits.
+
+    More information:
+    http://en.wikipedia.org/wiki/Cadastro_de_Pessoas_F%C3%ADsicas
+    """
+    def __init__(self, *args, **kwargs):
+        super(BRCPFField, self).__init__(max_length=14, min_length=11, *args, **kwargs)
+
+    def clean(self, value):
+        """
+        Value can be either a string in the format XXX.XXX.XXX-XX or an
+        11-digit number.
+        """
+        value = super(BRCPFField, self).clean(value)
+        if value in EMPTY_VALUES:
+            return u''
+        orig_value = value[:]
+        if not value.isdigit():
+            value = re.sub("[-\.]", "", value)
+        try:
+            int(value)
+        except ValueError:
+            raise ValidationError(gettext("This field requires only numbers"))
+        if len(value) != 11:
+            raise ValidationError(gettext("This field requires at most 11 digits or 14 characters."))
+        orig_dv = value[-2:]
+
+        new_1dv = sum([i * int(value[idx]) for idx, i in enumerate(range(10, 1, -1))])
+        new_1dv = DV_maker(new_1dv % 11)
+        value = value[:-2] + str(new_1dv) + value[-1]
+        new_2dv = sum([i * int(value[idx]) for idx, i in enumerate(range(11, 1, -1))])
+        new_2dv = DV_maker(new_2dv % 11)
+        value = value[:-1] + str(new_2dv)
+        if value[-2:] != orig_dv:
+            raise ValidationError(gettext("Invalid CPF number."))
+
+        return orig_value
+
+class BRCNPJField(Field):
+    def clean(self, value):
+        """
+        Value can be either a string in the format XX.XXX.XXX/XXXX-XX or a
+        group of 14 characters.
+        """
+        value = super(BRCNPJField, self).clean(value)
+        if value in EMPTY_VALUES:
+            return u''
+        orig_value = value[:]
+        if not value.isdigit():
+            value = re.sub("[-/\.]", "", value)
+        try:
+            int(value)
+        except ValueError:
+            raise ValidationError("This field requires only numbers")
+        if len(value) != 14:
+            raise ValidationError(
+                gettext("This field requires at least 14 digits"))
+        orig_dv = value[-2:]
+
+        new_1dv = sum([i * int(value[idx]) for idx, i in enumerate(range(5, 1, -1) + range(9, 1, -1))])
+        new_1dv = DV_maker(new_1dv % 11)
+        value = value[:-2] + str(new_1dv) + value[-1]
+        new_2dv = sum([i * int(value[idx]) for idx, i in enumerate(range(6, 1, -1) + range(9, 1, -1))])
+        new_2dv = DV_maker(new_2dv % 11)
+        value = value[:-1] + str(new_2dv)
+        if value[-2:] != orig_dv:
+            raise ValidationError(gettext("Invalid CNPJ number"))
+
+        return orig_value
+