22# coding: utf-8
33#
44# Copyright (C) 2014 Jonathan Finlay
5- # Copyright (C) 2014-2015 Arthur de Jong
5+ # Copyright (C) 2014-2021 Arthur de Jong
66#
77# This library is free software; you can redistribute it and/or
88# modify it under the terms of the GNU Lesser General Public
@@ -53,6 +53,32 @@ def _checksum(number, weights):
5353 return sum (w * int (n ) for w , n in zip (weights , number )) % 11
5454
5555
56+ def _validate_natural (number ):
57+ """Check if the number is a valid natural RUC (CI plus establishment)."""
58+ if number [- 3 :] == '000' :
59+ raise InvalidComponent () # establishment number wrong
60+ ci .validate (number [:10 ])
61+ return number
62+
63+
64+ def _validate_public (number ):
65+ """Check if the number is a valid public RUC."""
66+ if number [- 4 :] == '0000' :
67+ raise InvalidComponent () # establishment number wrong
68+ if _checksum (number [:9 ], (3 , 2 , 7 , 6 , 5 , 4 , 3 , 2 , 1 )) != 0 :
69+ raise InvalidChecksum ()
70+ return number
71+
72+
73+ def _validate_juridical (number ):
74+ """Check if the number is a valid juridical RUC."""
75+ if number [- 3 :] == '000' :
76+ raise InvalidComponent () # establishment number wrong
77+ if _checksum (number [:10 ], (4 , 3 , 2 , 7 , 6 , 5 , 4 , 3 , 2 , 1 )) != 0 :
78+ raise InvalidChecksum ()
79+ return number
80+
81+
5682def validate (number ):
5783 """Check if the number provided is a valid RUC number. This checks the
5884 length, formatting, check digit and check sum."""
@@ -65,21 +91,16 @@ def validate(number):
6591 raise InvalidComponent () # invalid province code
6692 if number [2 ] < '6' :
6793 # 0..5 = natural RUC: CI plus establishment number
68- if number [- 3 :] == '000' :
69- raise InvalidComponent () # establishment number wrong
70- ci .validate (number [:10 ])
94+ _validate_natural (number )
7195 elif number [2 ] == '6' :
72- # 6 = public RUC
73- if number [ - 4 :] == '0000' :
74- raise InvalidComponent () # establishment number wrong
75- if _checksum ( number [: 9 ], ( 3 , 2 , 7 , 6 , 5 , 4 , 3 , 2 , 1 )) != 0 :
76- raise InvalidChecksum ( )
96+ # 6 = public RUC (or natural RUC)
97+ try :
98+ _validate_public ( number )
99+ except ValidationError :
100+ _validate_natural ( number )
77101 elif number [2 ] == '9' :
78102 # 9 = juridical RUC
79- if number [- 3 :] == '000' :
80- raise InvalidComponent () # establishment number wrong
81- if _checksum (number [:10 ], (4 , 3 , 2 , 7 , 6 , 5 , 4 , 3 , 2 , 1 )) != 0 :
82- raise InvalidChecksum ()
103+ _validate_juridical (number )
83104 else :
84105 raise InvalidComponent () # third digit wrong
85106 return number
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