Class: Vindetta::Validator

Inherits:
Object
  • Object
show all
Defined in:
lib/vindetta/validator.rb

Constant Summary collapse

LENGTH = 
17
MAP = 
"0123456789X".chars
WEIGHTS = 
"8765432X98765432".chars

Class Method Summary collapse

Class Method Details

.check_digit(vin) ⇒ Object 



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# File 'lib/vindetta/validator.rb', line 13

def self.check_digit(vin)
  wmi = Decoder.wmi(vin).chars
  vds = Decoder.vds(vin, :check_digit => false).chars
  vis = Decoder.vis(vin).chars

  calculated = [wmi, vds, vis].flatten.map.with_index do |c, i|
    Transliterator::run(c) * MAP.find_index(WEIGHTS[i])
  end.sum

  MAP[calculated % 11]
end

.vin(vin) ⇒ Object 



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# File 'lib/vindetta/validator.rb', line 7

def self.vin(vin)
  return false unless vin.length == LENGTH

  check_digit(vin) == Decoder.check_digit(vin)
end