88 lines
2.7 KiB
Python
88 lines
2.7 KiB
Python
# brn.py - functions for handling South Korean BRN
|
|
# coding: utf-8
|
|
#
|
|
# Copyright (C) 2020 Leandro Regueiro
|
|
# Copyright (C) 2020 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
|
|
|
|
"""BRN (사업자 등록 번호, South Korea Business Registration Number).
|
|
|
|
The Business Registration Number is issued by the district tax office in the
|
|
local jurisdiction for tax purposes. The number consists of 10 digits and
|
|
contain the tax office number (3 digits), the type of business (2 digits), a
|
|
serially assigned value (4 digits) and a single check digit.
|
|
|
|
More information:
|
|
|
|
* https://www.oecd.org/tax/automatic-exchange/crs-implementation-and-assistance/tax-identification-numbers/Korea-TIN.pdf
|
|
|
|
>>> validate('116-82-00276')
|
|
'1168200276'
|
|
>>> validate('1168200276')
|
|
'1168200276'
|
|
>>> validate(' 116 - 82 - 00276 ')
|
|
'1168200276'
|
|
>>> validate('123456789')
|
|
Traceback (most recent call last):
|
|
...
|
|
InvalidLength: ...
|
|
>>> format('1348672683')
|
|
'134-86-72683'
|
|
"""
|
|
|
|
from __future__ import annotations
|
|
|
|
from stdnum.exceptions import *
|
|
from stdnum.util import clean, isdigits
|
|
|
|
|
|
def compact(number: str) -> str:
|
|
"""Convert the number to the minimal representation.
|
|
|
|
This strips the number of any valid separators and removes surrounding
|
|
whitespace.
|
|
"""
|
|
return clean(number, ' -').strip()
|
|
|
|
|
|
def validate(number: str) -> str:
|
|
"""Check if the number is a valid South Korea BRN number.
|
|
|
|
This checks the length and formatting.
|
|
"""
|
|
number = compact(number)
|
|
if len(number) != 10:
|
|
raise InvalidLength()
|
|
if not isdigits(number):
|
|
raise InvalidFormat()
|
|
if number[:3] < '101' or number[3:5] == '00' or number[5:-1] == '0000':
|
|
raise InvalidComponent()
|
|
return number
|
|
|
|
|
|
def is_valid(number: str) -> bool:
|
|
"""Check if the number is a valid South Korea BRN number."""
|
|
try:
|
|
return bool(validate(number))
|
|
except ValidationError:
|
|
return False
|
|
|
|
|
|
def format(number: str) -> str:
|
|
"""Reformat the number to the standard presentation format."""
|
|
number = compact(number)
|
|
return '-'.join([number[:3], number[3:5], number[5:]])
|