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Shared/lib/python3.4/site-packages/stdnum/eu/__init__.py

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+# __init__.py - collection of European Union 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
+
+"""Collection of European Union numbers."""

Shared/lib/python3.4/site-packages/stdnum/eu/vat.py

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+# vat.py - functions for handling European VAT numbers
+# coding: utf-8
+#
+# Copyright (C) 2012, 2013 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
+
+"""VAT (European Union VAT number).
+
+The European Union VAT number consists of a 2 letter country code (ISO
+3166-1, except Greece which uses EL) followed by a number that is
+allocated per country.
+
+The exact format of the numbers varies per country and a country-specific
+check is performed on the number using the VAT module that is relevant for
+that country.
+
+>>> compact('ATU 57194903')
+'ATU57194903'
+>>> validate('BE697449992')
+'BE0697449992'
+>>> validate('FR 61 954 506 077')
+'FR61954506077'
+>>> guess_country('00449544B01')
+['nl']
+"""
+
+from stdnum.exceptions import *
+from stdnum.util import clean
+
+
+country_codes = set([
+    'at', 'be', 'bg', 'cy', 'cz', 'de', 'dk', 'ee', 'es', 'fi', 'fr', 'gb',
+    'gr', 'hu', 'ie', 'it', 'lt', 'lu', 'lv', 'mt', 'nl', 'pl', 'pt', 'ro',
+    'se', 'si', 'sk'
+])
+"""The collection of country codes that are queried. Greece is listed with
+a country code of gr while for VAT purposes el is used instead."""
+
+_country_modules = dict()
+
+vies_wsdl = 'http://ec.europa.eu/taxation_customs/vies/checkVatService.wsdl'
+"""The WSDL URL of the VAT Information Exchange System (VIES)."""
+
+# a cached version of the suds client for VIES
+_vies_client = None
+
+
+def _get_cc_module(cc):
+    """Get the VAT number module based on the country code."""
+    # Greece uses a "wrong" country code
+    cc = cc.lower()
+    if cc == 'el':
+        cc = 'gr'
+    if cc not in country_codes:
+        return
+    if cc not in _country_modules:
+        # do `from stdnum.CC import vat` instead of `import stdnum.CC.vat`
+        # to handle the case where vat is an alias
+        _country_modules[cc] = __import__(
+            'stdnum.%s' % cc, globals(), locals(), ['vat']).vat
+    return _country_modules[cc]
+
+
+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()
+    module = _get_cc_module(number[:2])
+    if not module:
+        raise InvalidComponent()
+    return number[:2] + module.compact(number[2:])
+
+
+def validate(number):
+    """Checks to see if the number provided is a valid VAT number. This
+    performs the country-specific check for the number."""
+    number = clean(number, '').upper().strip()
+    module = _get_cc_module(number[:2])
+    if not module:
+        raise InvalidComponent()
+    return number[:2] + module.validate(number[2:])
+
+
+def is_valid(number):
+    """Checks to see if the number provided is a valid VAT number. This
+    performs the country-specific check for the number."""
+    try:
+        return bool(validate(number))
+    except ValidationError:
+        return False
+
+
+def guess_country(number):
+    """Guess the country code based on the provided number. This checks the
+    provided number against each of the validation routines and returns
+    the list of countries for which it is valid. This returns lower case
+    codes and returns gr (not el) for Greece."""
+    return [cc
+            for cc in country_codes
+            if _get_cc_module(cc).is_valid(number)]
+
+
+def check_vies(number):  # pragma: no cover (no tests for this function)
+    """Queries the online European Commission VAT Information Exchange
+    System (VIES) for validity of the provided number. Note that the
+    service has usage limitations (see the VIES website for details).
+    This returns a dict-like object."""
+    # this function isn't automatically tested because it would require
+    # network access for the tests and unnecessarily load the VIES website
+    number = compact(number)
+    global _vies_client
+    if not _vies_client:
+        from suds.client import Client
+        from urllib import getproxies
+        _vies_client = Client(vies_wsdl, proxy=getproxies())
+    return _vies_client.service.checkVat(number[:2], number[2:])