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Contents
# -*- encoding: utf-8 -*-
module CiteProc
# A CiteProc Variable used for numeric values.
class Number < Variable
MAX_ROMAN = 5000
FACTORS = [
['m', 1000], ['cm', 900], ['d', 500], ['cd', 400],
['c', 100], ['xc', 90], ['l', 50], ['xl', 40],
['x', 10], ['ix', 9], ['v', 5], ['iv', 4],
['i', 1]
].freeze
class << self
def pluralize?(string)
/\S[\s,&–-]\S|\df/ === string
end
# @param number [#to_i] the number to convert
# @return [String] roman equivalent of the passed-in number
def romanize(number)
number, roman = number.to_i, ''
return number unless number > 0 || number < MAX_ROMAN
FACTORS.each do |code, factor|
count, number = number.divmod(factor)
roman << (code * count)
end
roman
end
end
def <=>(other)
case
when other.nil?
1
when numeric?
if other.respond_to?(:to_i)
to_i <=> other.to_i
else
nil
end
when other.is_a?(Variable) || other.is_a?(String)
to_s <=> other.to_s
else
nil
end
end
end
end
Version data entries
12 entries across 12 versions & 1 rubygems