Sha256: e65de8c1f0822a82d5958e9b3f1bfaaf0a4c176e7658030e8874927537c47a0e
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Versions: 16
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Stored size: 1.81 KB
Contents
class Valvat
module Checksum
ALGORITHMS = {}
def self.validate(vat)
vat = Valvat(vat)
algo = ALGORITHMS[vat.iso_country_code]
Valvat::Syntax.validate(vat) && !!(algo.nil? || algo.new(vat).validate)
end
class Base
def self.inherited(klass)
ALGORITHMS[klass.name.split(/::/).last] = klass
end
attr_reader :vat
def self.check_digit_length(len=nil)
@check_digit_length = len if len
@check_digit_length || 1
end
def initialize(vat)
@vat = vat
end
def validate
check_digit == given_check_digit
end
private
def given_check_digit_str
str_wo_country[-self.class.check_digit_length..-1]
end
def given_check_digit
given_check_digit_str.to_i
end
def figures_str
str_wo_country[0..-(self.class.check_digit_length+1)]
end
def figures
figures_str.split("").map(&:to_i)
end
def str_wo_country
vat.to_s_wo_country
end
def sum_figures_by
figures.reverse.each_with_index.map do |fig, i|
yield(fig, i)
end.inject(:+)
end
def sum_of_squares(num)
num.to_s.split("").map(&:to_i).inject(:+)
end
def sum_of_figures_for_at_es_it_se(reverse_ints=false)
ints = reverse_ints ? [2, 1] : [1, 2]
sum_figures_by do |fig, i|
sum_of_squares(fig*(i.modulo(2) == 0 ? ints[0] : ints[1]))
end
end
def sum_of_figues_for_pt_si
11 - sum_figures_by do |fig, i|
fig*(i+2)
end.modulo(11)
end
end
end
end
Dir[File.join(File.dirname(__FILE__), 'checksum', '*.rb')].each do |path|
# On Ruby 2.1.0 ActiveSupport goes mad if you pass it paths with .rb at the end
require path.gsub(/\.rb$/, '')
end
Version data entries
16 entries across 16 versions & 1 rubygems