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https://gitlab.com/flectra-community/server-ux.git
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70 lines
2.3 KiB
Python
70 lines
2.3 KiB
Python
# Copyright (C) 2017 Creu Blanca
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# License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl.html).
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import logging
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from flectra import _, api, fields, models
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from flectra.exceptions import ValidationError
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_logger = logging.getLogger(__name__)
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try:
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from stdnum import damm, luhn, verhoeff
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from stdnum.iso7064 import mod_11_2, mod_11_10, mod_37_2, mod_37_36, mod_97_10
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except (ImportError, IOError) as err:
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_logger.debug(err)
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class IrSequence(models.Model):
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_inherit = "ir.sequence"
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check_digit_formula = fields.Selection(
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selection=[
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("none", "None"),
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("luhn", "Luhn"),
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("damm", "Damm"),
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("verhoeff", "Verhoeff"),
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("ISO7064_11_2", "ISO 7064 Mod 11, 2"),
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("ISO7064_11_10", "ISO 7064 Mod 11, 10"),
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("ISO7064_37_2", "ISO 7064 Mod 37, 2"),
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("ISO7064_37_36", "ISO 7064 Mod 37, 36"),
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("ISO7064_97_10", "ISO 7064 Mod 97, 10"),
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],
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default="none",
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)
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@api.constrains("check_digit_formula", "prefix", "suffix")
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def check_check_digit_formula(self):
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try:
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self.get_next_char(0)
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except Exception:
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raise ValidationError(_("Format is not accepted"))
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def get_check_digit(self, code):
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try:
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return self.get_formula_map()[self.check_digit_formula](code)
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except KeyError:
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raise ValidationError(
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_("%s is not an implemented function" % self.check_digit_formula)
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)
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except Exception:
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raise ValidationError(_("Format is not accepted"))
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def get_formula_map(self):
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return {
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"none": lambda _: "",
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"luhn": luhn.calc_check_digit,
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"damm": damm.calc_check_digit,
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"verhoeff": verhoeff.calc_check_digit,
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"ISO7064_11_2": mod_11_2.calc_check_digit,
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"ISO7064_11_10": mod_11_10.calc_check_digit,
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"ISO7064_37_2": mod_37_2.calc_check_digit,
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"ISO7064_37_36": mod_37_36.calc_check_digit,
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"ISO7064_97_10": mod_97_10.calc_check_digits,
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}
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def get_next_char(self, number_next):
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code = super(IrSequence, self).get_next_char(number_next)
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if not self.check_digit_formula:
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return code
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return "{}{}".format(code, self.get_check_digit(code))
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