diff options
author | Arthur de Jong <arthur@arthurdejong.org> | 2012-02-12 15:26:44 +0100 |
---|---|---|
committer | Arthur de Jong <arthur@arthurdejong.org> | 2012-02-12 15:26:44 +0100 |
commit | ffc824b1c63ffe474cb2cc2e736b90f919404ffb (patch) | |
tree | 69cd9b7e001b544e75c51faacc88efa2c85d5d31 | |
parent | 9d65f6a6ee8c213244f59b027ba6b8530d41b75a (diff) |
add a CF (Cod de înregistrare în scopuri de TVA, Romanian VAT number) module
git-svn-id: http://arthurdejong.org/svn/python-stdnum/python-stdnum@123 9dea7c4f-944c-4273-ac1a-574ede026edc
-rw-r--r-- | README | 1 | ||||
-rw-r--r-- | stdnum/__init__.py | 1 | ||||
-rw-r--r-- | stdnum/ro/cf.py | 72 | ||||
-rw-r--r-- | tests/test_robustness.doctest | 2 |
4 files changed, 75 insertions, 1 deletions
@@ -38,6 +38,7 @@ Currently this package supports the following formats: * CVR (Momsregistreringsnummer, Danish VAT number) * TVA (Numéro d'identification à la taxe sur la valeur ajoutée, Luxembourgian VAT number) + * CF (Cod de înregistrare în scopuri de TVA, Romanian VAT number) * IMEI (International Mobile Equipment Identity) * IMSI (International Mobile Subscriber Identity) * MEID (Mobile Equipment Identifier) diff --git a/stdnum/__init__.py b/stdnum/__init__.py index 3b4fa16..8f2807e 100644 --- a/stdnum/__init__.py +++ b/stdnum/__init__.py @@ -52,6 +52,7 @@ Currently this package supports the following formats: * CVR (Momsregistreringsnummer, Danish VAT number) * TVA (Numéro d'identification à la taxe sur la valeur ajoutée, Luxembourgian VAT number) + * CF (Cod de înregistrare în scopuri de TVA, Romanian VAT number) * IMEI (International Mobile Equipment Identity) * IMSI (International Mobile Subscriber Identity) * MEID (Mobile Equipment Identifier) diff --git a/stdnum/ro/cf.py b/stdnum/ro/cf.py new file mode 100644 index 0000000..4a32377 --- /dev/null +++ b/stdnum/ro/cf.py @@ -0,0 +1,72 @@ +# cf.py - functions for handling Romanian CF (VAT) numbers +# coding: utf-8 +# +# Copyright (C) 2012 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 + +"""Module for handling Romanian CF (Cod de înregistrare în scopuri de TVA) +numbers. + +These numbers can be from 2 to 10 digits long. + +>>> compact('RO 185 472 90') +'18547290' +>>> is_valid('185 472 90') +True +>>> is_valid('185 472 91') # invalid check digit +False +>>> is_valid('1630615123457') # personal code +True +""" + +from stdnum.ro import cnp +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.""" + number = clean(number, ' -').upper().strip() + if number.startswith('RO'): + number = number[2:] + return number + + +def calc_check_digit(number): + """Calculate the check digit for organisations. The number passed + should not have the check digit included.""" + weights = (7, 5, 3, 2, 1, 7, 5, 3, 2) + number = (9 - len(number)) * '0' + number + check = 10 * sum(weights[i] * int(n) for i, n in enumerate(number)) + return str(check % 11 % 10) + + +def is_valid(number): + """Checks to see if the number provided is a valid VAT number. This + checks the length, formatting and check digit.""" + try: + number = compact(number) + except: + return False + if not number.isdigit() or number[0] == '0': + return False + if len(number) == 13: + # apparently a CNP can also be used (however, not all sources agree) + return cnp.is_valid(number) + elif 2 <= len(number) <= 10: + return calc_check_digit(number[:-1]) == number[-1] + return False diff --git a/tests/test_robustness.doctest b/tests/test_robustness.doctest index 6552f5c..b0e536f 100644 --- a/tests/test_robustness.doctest +++ b/tests/test_robustness.doctest @@ -39,7 +39,7 @@ invalid junk. >>> from stdnum.lu import tva >>> from stdnum.lv import pvn >>> from stdnum.nl import bsn, onderwijsnummer, btw ->>> from stdnum.ro import cnp +>>> from stdnum.ro import cf, cnp >>> from stdnum.us import ssn Go over each imported module and try every value. |