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| author | Leandro Regueiro <leandro.regueiro@gmail.com> | 2020-03-07 20:56:13 +0100 |
|---|---|---|
| committer | Arthur de Jong <arthur@arthurdejong.org> | 2020-06-28 16:57:01 +0200 |
| commit | b3891f1eff22c46d0856b1b303781f911c2b2e5a (patch) | |
| tree | 234542ac450689cccb7888d2bcdfa9621a602f76 /stdnum/kr/brn.py | |
| parent | 127fff17bf612ba8457ea84424ce4d99abd62306 (diff) | |
Add support for South Korea Business Registration Number
Closes https://github.com/arthurdejong/python-stdnum/pull/197
Closes https://github.com/arthurdejong/python-stdnum/issues/101
Diffstat (limited to 'stdnum/kr/brn.py')
| -rw-r--r-- | stdnum/kr/brn.py | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/stdnum/kr/brn.py b/stdnum/kr/brn.py new file mode 100644 index 0000000..c004aa9 --- /dev/null +++ b/stdnum/kr/brn.py @@ -0,0 +1,85 @@ +# brn.py - functions for handling South Korean BRN +# coding: utf-8 +# +# Copyright (C) 2020 Leandro Regueiro +# +# 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 stdnum.exceptions import * +from stdnum.util import clean, isdigits + + +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 validate(number): + """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): + """Check if the number is a valid South Korea BRN number.""" + try: + return bool(validate(number)) + except ValidationError: + return False + + +def format(number): + """Reformat the number to the standard presentation format.""" + number = compact(number) + return '-'.join([number[:3], number[3:5], number[5:]]) |