update shared dependencies

Shared/lib/python3.4/site-packages/stdnum/br/cnpj.py

@@ -0,0 +1,86 @@
+# cnpj.py - functions for handling CNPJ numbers
+# coding: utf-8
+#
+# Copyright (C) 2015 Arthur de Jong
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+# 02110-1301 USA
+
+"""CNPJ (Cadastro Nacional da Pessoa Jurídica, Brazillian company identifier).
+
+Numbers from the national register of legal entities have 14 digits. The
+first 8 digits identify the company, the following 4 digits identify a
+business unit and the last 2 digits are check digits.
+
+>>> validate('16.727.230/0001-97')
+'16727230000197'
+>>> validate('16.727.230.0001-98')
+Traceback (most recent call last):
+    ...
+InvalidChecksum: ...
+>>> validate('16.727.230/0001=97')  # invalid delimiter
+Traceback (most recent call last):
+    ...
+InvalidFormat: ...
+>>> format('16727230000197')
+'16.727.230/0001-97'
+"""
+
+from stdnum.exceptions import *
+from stdnum.util import clean
+
+
+def compact(number):
+    """Convert the number to the minimal representation. This strips the
+    number of any valid separators and removes surrounding whitespace."""
+    return clean(number, ' -./').strip()
+
+
+def calc_check_digits(number):
+    """Calculate the check digits for the number."""
+    d1 = (11 - sum(((3 - i) % 8 + 2) * int(n)
+                   for i, n in enumerate(number[:12]))) % 11 % 10
+    d2 = (11 - sum(((4 - i) % 8 + 2) * int(n)
+                   for i, n in enumerate(number[:12])) -
+          2 * d1) % 11 % 10
+    return '%d%d' % (d1, d2)
+
+
+def validate(number):
+    """Checks to see if the number provided is a valid CNPJ. This checks the
+    length and whether the check digits are correct."""
+    number = compact(number)
+    if not number.isdigit() or int(number) <= 0:
+        raise InvalidFormat()
+    if len(number) != 14:
+        raise InvalidLength()
+    if calc_check_digits(number) != number[-2:]:
+        raise InvalidChecksum()
+    return number
+
+
+def is_valid(number):
+    """Checks to see if the number provided is a valid CNPJ. This checks the
+    length and whether the check digits are correct."""
+    try:
+        return bool(validate(number))
+    except ValidationError:
+        return False
+
+
+def format(number):
+    number = compact(number)
+    return (number[0:2] + '.' + number[2:5] + '.' + number[5:8] + '/' +
+            number[8:12] + '-' + number[12:])