class ValidatesCpf::Cpf

Attributes

number[R]

Public Class Methods

new(number) click to toggle source
# File lib/validates_cpf/cpf.rb, line 5
def initialize(number)
  number =~ /^(\d{3}\.?\d{3}\.?\d{3})-?(\d{2})$/
  @number = number
  @pure_number = Regexp.last_match(1)
  @result = Regexp.last_match(2)
  @cleaned_number = @pure_number.nil? ? nil : @number.gsub(/[\.-]/, '')
  format_number! if @pure_number
end

Public Instance Methods

valid?() click to toggle source
# File lib/validates_cpf/cpf.rb, line 14
def valid?
  return true if @number.blank?
  return false unless @pure_number

  check_cpf
end

Private Instance Methods

check_cpf() click to toggle source
# File lib/validates_cpf/cpf.rb, line 25
def check_cpf
  return false if @cleaned_number.length != 11 || @cleaned_number.scan(/\d/).uniq.length == 1

  @result == first_digit_verifier + second_digit_verifier
end
digit_verifier(rest) click to toggle source
# File lib/validates_cpf/cpf.rb, line 47
def digit_verifier(rest)
  rest < 2 ? 0 : 11 - rest
end
first_digit_verifier() click to toggle source
# File lib/validates_cpf/cpf.rb, line 31
def first_digit_verifier
  sum = multiply_and_sum([10, 9, 8, 7, 6, 5, 4, 3, 2], @pure_number)
  digit_verifier(sum % 11).to_s
end
format_number!() click to toggle source
# File lib/validates_cpf/cpf.rb, line 51
def format_number!
  @cleaned_number =~ /(\d{3})(\d{3})(\d{3})(\d{2})/
  @number = "#{Regexp.last_match(1)}.#{Regexp.last_match(2)}.#{Regexp.last_match(3)}-#{Regexp.last_match(4)}"
end
multiply_and_sum(array, number) click to toggle source
# File lib/validates_cpf/cpf.rb, line 41
def multiply_and_sum(array, number)
  multiplied = []
  number.scan(/\d{1}/).each_with_index { |e, i| multiplied[i] = e.to_i * array[i] }
  multiplied.inject { |s, e| s + e }
end
second_digit_verifier() click to toggle source
# File lib/validates_cpf/cpf.rb, line 36
def second_digit_verifier
  sum = multiply_and_sum([11, 10, 9, 8, 7, 6, 5, 4, 3, 2], @pure_number + first_digit_verifier)
  digit_verifier(sum % 11).to_s
end