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require 'cldr'
module I18n
module Backend
module Cldr
include ::Cldr::Format
def localize(locale, object, format = :default, options = {})
options[:as] ||= detect_type(object, options)
send(:"format_#{options[:as]}", locale, object, format, options)
end
def format_decimal(locale, object, format = :default, options = {})
formatter(locale, :decimal, format).apply(object, options)
end
def format_integer(locale, object, format = :default, options = {})
format_object(number, options.merge(:precision => 0))
end
def format_currency(locale, object, format = :default, options = {})
options.merge!(:currency => lookup_currency(locale, options[:currency], object)) if options[:currency].is_a?(Symbol)
formatter(locale, :currency, format).apply(object, options)
end
def format_percent(locale, object, format = :default, options = {})
formatter(locale, :percent, format).apply(object, options)
end
def format_date(locale, object, format = :default, options = {})
formatter(locale, :date, format).apply(object, options)
end
def format_time(locale, object, format = :default, options = {})
formatter(locale, :time, format).apply(object, options)
end
def format_datetime(locale, object, format = :default, options = {})
key = :"calendars.gregorian.formats.datetime.#{format}.pattern"
date = I18n.l(object, :format => options[:date_format] || format, :locale => locale, :as => :date)
time = I18n.l(object, :format => options[:time_format] || format, :locale => locale, :as => :time)
I18n.t(key, :date => date, :time => time, :locale => locale, :raise => true)
end
protected
def detect_type(object, options)
options.has_key?(:currency) ? :currency : case object
when ::Numeric
:decimal
when ::Date, ::DateTime, ::Time
object.class.name.downcase.to_sym
else
raise_unspecified_format_type!
end
end
def formatter(locale, type, format)
(@formatters ||= {})[:"#{locale}.#{type}.#{format}"] ||= begin
format = lookup_format(locale, type, format)
data = lookup_format_data(locale, type)
::Cldr::Format.const_get(type.to_s.camelize).new(format, data)
end
end
def lookup_format(locale, type, format)
key = case type
when :date, :time, :datetime
:"calendars.gregorian.formats.#{type}.#{format}.pattern"
else
:"numbers.formats.#{type}.patterns.#{format || :default}"
end
I18n.t(key, :locale => locale, :raise => true)
end
def lookup_format_data(locale, type)
key = case type
when :date, :time, :datetime
:'calendars.gregorian'
else
:'numbers.symbols'
end
I18n.t(key, :locale => locale, :raise => true)
end
def lookup_currency(locale, currency, count)
I18n.t(:"currencies.#{currency}", :locale => locale, :count => count)
end
def raise_unspecified_format_type!
raise ArgumentError.new("You have to specify a format type, e.g. :as => :number.")
end
def raise_unspecified_currency!
raise ArgumentError.new("You have to specify a currency, e.g. :currency => 'EUR'.")
end
end
end
end
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