module Numb3rs
module Languages
class EnUs < EnUk
def in_words(number, *args)
return "negative " + in_words(-number) if number < 0
@cached[number] || returning("") do |s|
s << case number
when 0..99 then ([ in_words(number - number % 10), in_words(number % 10) ] - %w(zero)).join("-")
when 100..999 then partial_words(number, 100)
when 1_000..999_999 then partial_words(number, 1000)
when 1_000_000..999_999_999 then partial_words(number, 1_000_000)
else "many"
end
@cached[number] = s if number < 1000 and @cached[number].nil?
end
end
protected
def partial_words(number, magnitude)
([ in_words(number / magnitude) + " " + in_words(magnitude).sub(/^a(n)? /, ""), in_words(number % magnitude) ] - %w(zero)).join(number % magnitude < 100 ? " " : ", ")
end
end
end
end
