2022-05-23 00:16:32 +04:00

201 lines
4.9 KiB
Python

# -*- coding: utf-8 -*-
from validators.utils import validator
__all__ = ('es_cif', 'es_nif', 'es_nie', 'es_doi',)
def nif_nie_validation(doi, number_by_letter, special_cases):
"""
Validate if the doi is a NIF or a NIE.
:param doi: DOI to validate.
:return: boolean if it's valid.
"""
doi = doi.upper()
if doi in special_cases:
return False
table = 'TRWAGMYFPDXBNJZSQVHLCKE'
if len(doi) != 9:
return False
control = doi[8]
# If it is not a DNI, convert the first letter to the corresponding
# digit
numbers = number_by_letter.get(doi[0], doi[0]) + doi[1:8]
return numbers.isdigit() and control == table[int(numbers) % 23]
@validator
def es_cif(doi):
"""
Validate a Spanish CIF.
Each company in Spain prior to 2008 had a distinct CIF and has been
discontinued. For more information see `wikipedia.org/cif`_.
The new replacement is to use NIF for absolutely everything. The issue is
that there are "types" of NIFs now: company, person[citizen vs recident]
all distinguished by the first character of the DOI. For this reason we
will continue to call CIF NIFs that are used for companies.
This validator is based on `generadordni.es`_.
.. _generadordni.es:
https://generadordni.es/
.. _wikipedia.org/cif:
https://es.wikipedia.org/wiki/C%C3%B3digo_de_identificaci%C3%B3n_fiscal
Examples::
>>> es_cif('B25162520')
True
>>> es_cif('B25162529')
ValidationFailure(func=es_cif, args=...)
.. versionadded:: 0.13.0
:param doi: DOI to validate
"""
doi = doi.upper()
if len(doi) != 9:
return False
table = 'JABCDEFGHI'
first_chr = doi[0]
doi_body = doi[1:8]
control = doi[8]
if not doi_body.isdigit():
return False
odd_result = 0
even_result = 0
for index, char in enumerate(doi_body):
if index % 2 == 0:
# Multiply each each odd position doi digit by 2 and sum it all
# together
odd_result += sum(map(int, str(int(char) * 2)))
else:
even_result += int(char)
res = (10 - (even_result + odd_result) % 10) % 10
if first_chr in 'ABEH': # Number type
return str(res) == control
elif first_chr in 'PSQW': # Letter type
return table[res] == control
elif first_chr not in 'CDFGJNRUV':
return False
return control == str(res) or control == table[res]
@validator
def es_nif(doi):
"""
Validate a Spanish NIF.
Each entity, be it person or company in Spain has a distinct NIF. Since
we've designated CIF to be a company NIF, this NIF is only for person.
For more information see `wikipedia.org/nif`_.
This validator is based on `generadordni.es`_.
.. _generadordni.es:
https://generadordni.es/
.. _wikipedia.org/nif:
https://es.wikipedia.org/wiki/N%C3%BAmero_de_identificaci%C3%B3n_fiscal
Examples::
>>> es_nif('26643189N')
True
>>> es_nif('26643189X')
ValidationFailure(func=es_nif, args=...)
.. versionadded:: 0.13.0
:param doi: DOI to validate
"""
number_by_letter = {'L': '0', 'M': '0', 'K': '0'}
special_cases = ['X0000000T', '00000000T', '00000001R']
return nif_nie_validation(doi, number_by_letter, special_cases)
@validator
def es_nie(doi):
"""
Validate a Spanish NIE.
The NIE is a tax identification number in Spain, known in Spanish as the
NIE, or more formally the Número de identidad de extranjero. For more
information see `wikipedia.org/nie`_.
This validator is based on `generadordni.es`_.
.. _generadordni.es:
https://generadordni.es/
.. _wikipedia.org/nie:
https://es.wikipedia.org/wiki/N%C3%BAmero_de_identidad_de_extranjero
Examples::
>>> es_nie('X0095892M')
True
>>> es_nie('X0095892X')
ValidationFailure(func=es_nie, args=...)
.. versionadded:: 0.13.0
:param doi: DOI to validate
"""
number_by_letter = {'X': '0', 'Y': '1', 'Z': '2'}
special_cases = ['X0000000T']
# NIE must must start with X Y or Z
if not doi or doi[0] not in number_by_letter.keys():
return False
return nif_nie_validation(doi, number_by_letter, special_cases)
@validator
def es_doi(doi):
"""
Validate a Spanish DOI.
A DOI in spain is all NIF / CIF / NIE / DNI -- a digital ID. For more
information see `wikipedia.org/doi`_.
This validator is based on `generadordni.es`_.
.. _generadordni.es:
https://generadordni.es/
.. _wikipedia.org/doi:
https://es.wikipedia.org/wiki/Identificador_de_objeto_digital
Examples::
>>> es_doi('X0095892M')
True
>>> es_doi('X0095892X')
ValidationFailure(func=es_doi, args=...)
.. versionadded:: 0.13.0
:param doi: DOI to validate
"""
return es_nie(doi) or es_nif(doi) or es_cif(doi)