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Contents
# encoding: UTF-8
# Copyright 2012 Twitter, Inc
# http://www.apache.org/licenses/LICENSE-2.0
module TwitterCldr
module Shared
class UnsupportedNumberingSystemError < StandardError; end
class NumberingSystem
class << self
def for_name(name)
system_cache[name] ||= begin
if system = resource[name.to_sym]
if system[:type] != "numeric"
raise UnsupportedNumberingSystemError.new("#{system[:type]} numbering systems not supported.")
else
new(system[:name], system[:digits])
end
end
end
end
protected
def system_cache
@system_cache ||= {}
end
def resource
@resource ||= TwitterCldr.get_resource(:shared, :numbering_systems)[:numbering_systems]
end
end
attr_reader :name, :digits
def initialize(name, digits)
@name = name
@digits = split_digits(digits)
end
def transliterate(number)
number.to_s.gsub(/\d/) do |digit|
digits[digit.to_i]
end
end
protected
def split_digits(str)
str.unpack("U*").map { |digit| [digit].pack("U*") }
end
end
end
end
Version data entries
37 entries across 37 versions & 3 rubygems