class SecurityIdentifiers::CUSIP

Constants

SYMBOLS

Public Class Methods

new(str) click to toggle source
# File lib/security_identifiers/cusip.rb, line 9
def initialize(str)
  raise InvalidFormat if str.nil?

  match_data = str.upcase.match(/^([A-Z0-9\*@#]{8})(\d{1})?$/)

  raise InvalidFormat if match_data.nil?

  @identifier, @original_check_digit = match_data.captures

  fix! if @original_check_digit.nil?
end

Public Instance Methods

check_digit() click to toggle source
# File lib/security_identifiers/cusip.rb, line 21
def check_digit
  values = even_values.map { |i| i * 2 }.zip(odd_values).flatten

  sum = values.inject(0) do |result, i|
    result + (i / 10) + i % 10
  end

  mod_10(sum)
end
to_isin(iso = 'US') click to toggle source
# File lib/security_identifiers/cusip.rb, line 31
def to_isin(iso = 'US')
  raise InvalidConversion unless %w(US CA).include?(iso)

  ISIN.new([iso, @identifier, check_digit].join)
end

Private Instance Methods

digits_for(char) click to toggle source
Calls superclass method SecurityIdentifiers::Base#digits_for
# File lib/security_identifiers/cusip.rb, line 39
def digits_for(char)
  return SYMBOLS[char] if SYMBOLS.key?(char)

  super
end