class RfcFacil::VerificationDigitCalculator
Constants
- MAPPING
Attributes
rfc12_digits[RW]
Public Class Methods
new(rfc12_digits)
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# File lib/rfc_facil/verification_digit_calculator.rb, line 13 def initialize(rfc12_digits) @rfc12_digits = rfc12_digits end
Public Instance Methods
calculate()
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# File lib/rfc_facil/verification_digit_calculator.rb, line 17 def calculate sum = 0 (0..11).each do |i| sum += map_digit(@rfc12_digits[i]) * (13 - i) end reminder = sum % 11 return '0' if reminder == 0 (11 - reminder).to_s(16).upcase # from 1 to A (hex) end
map_digit(c)
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# File lib/rfc_facil/verification_digit_calculator.rb, line 28 def map_digit(c) return MAPPING[c] if MAPPING.key?(c) 0 end