Module: RomanNumerals

Defined in:
lib/legal_markdown/roman_numerals.rb

Class Method Summary collapse

Class Method Details

.to_decimal_string(value) ⇒ Object 



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# File 'lib/legal_markdown/roman_numerals.rb', line 58

def self.to_decimal_string(value)
  value.upcase!
  result = 0
  @base_digits.values.reverse.each do |roman|
    while value.start_with? roman
      value = value.slice(roman.length, value.length)
      result += @base_digits.key roman
    end
  end
  result.to_s
end

.to_roman_lower(value) ⇒ Object 



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# File 'lib/legal_markdown/roman_numerals.rb', line 54

def self.to_roman_lower(value)
  self.to_roman_upper(value).downcase
end

.to_roman_upper(value) ⇒ Object 



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# File 'lib/legal_markdown/roman_numerals.rb', line 42

def self.to_roman_upper(value)
  value = value.to_i
  result = ''
  @base_digits.keys.reverse.each do |decimal|
    while value >= decimal
      value -= decimal
      result += @base_digits[decimal]
    end
  end
  result
end