Module: CodiceFiscale::Helpers

Included in:
FiscalCode
Defined in:
lib/codice_fiscale/helpers.rb

Instance Method Summary collapse

Instance Method Details

#consonants(string) ⇒ Object 



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# File 'lib/codice_fiscale/helpers.rb', line 8

def consonants string
  multiset_intersection(string.chars, Alphabet.consonants).join
end

#first_three_consonants(string) ⇒ Object 



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# File 'lib/codice_fiscale/helpers.rb', line 12

def first_three_consonants string
  multiset_intersection(string.chars, Alphabet.consonants)[0..2].join
end

#first_three_consonants_than_vowels(string) ⇒ Object 



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# File 'lib/codice_fiscale/helpers.rb', line 24

def first_three_consonants_than_vowels string
  upcase_string = string.upcase
  code = first_three_consonants upcase_string
  code << first_three_vowels(upcase_string)
  truncate_and_right_pad_with_three_x code
end

#first_three_vowels(string) ⇒ Object 



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# File 'lib/codice_fiscale/helpers.rb', line 16

def first_three_vowels string
  multiset_intersection(string.chars, Alphabet.vowels)[0..2].join
end

#multiset_intersection(array_a, array_b) ⇒ Object 



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# File 'lib/codice_fiscale/helpers.rb', line 4

def multiset_intersection array_a, array_b
  array_a.select { |letter| array_b.include? letter }
end

#truncate_and_right_pad_with_three_x(string) ⇒ Object 



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# File 'lib/codice_fiscale/helpers.rb', line 20

def truncate_and_right_pad_with_three_x string
  string[0..2].ljust 3, 'X'
end