class MaverickVinParser

This class implements parsing of Vehicle Identification Numbers (VINs) for Ford Mavericks and Mercury Comets from 1970-77

Constants

ArgumentError
VERSION

Public Class Methods

new() click to toggle source

# File lib/maverick_vin_parser.rb, line 14
def initialize
  plant_code_regex = list_to_regex(PLANT_CODES)
  body_code_regex = list_to_regex(BODY_CODES)
  engine_code_regex = list_to_regex(ENGINE_CODES)
  @regex_main = /([0-7])(#{plant_code_regex})(#{body_code_regex})(#{engine_code_regex})([0-9]{6})/
end

Public Instance Methods

parse(vin) click to toggle source

Parses the provided VIN

@param vin [string] The VIN to be parsed @return [hash] data parsed from the VIN @raise MaverickVinParser::ArgumentError if the VIN is invalid @example

MaverickVinParser.new.parse('0X91U100647') #=> "{:year=>1970, :plant=>"St. Thomas", :body=>"Maverick 2-Door Sedan Standard", :engine=>"170ci 6-Cylinder 1 bbl", :unit_number=>100647}"

# File lib/maverick_vin_parser.rb, line 30
def parse(vin)
  @regex_main.match(vin) do

    vehicle_hash = {
        year: 1970+$1.to_i,
        plant: PLANT_CODES[$2.to_sym],
        body: BODY_CODES[$3],
        engine: ENGINE_CODES[$4.to_sym],
    }
    unit_number_origin = vehicle_hash[:body].include?('Maverick') ? UNIT_NUMBER_ORIGIN_FORD : UNIT_NUMBER_ORIGIN_MERCURY
    vehicle_hash[:unit_number] = $5.to_i - unit_number_origin
    return vehicle_hash
  end


  raise ArgumentError.new("#{vin} does not appear to be a valid Maverick VIN")


end

Private Instance Methods

list_to_regex(list) click to toggle source

# File lib/maverick_vin_parser.rb, line 52
def list_to_regex(list)
  keys = list.keys
  keys.collect! { |key| key.length > 1 ? "(?:#{key})" : key }
  /#{keys.join('|')}/
end