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# encoding: utf-8
# I18n locale fallbacks are useful when you want your application to use
# translations from other locales when translations for the current locale are
# missing. E.g. you might want to use :en translations when translations in
# your applications main locale :de are missing.
#
# To enable locale specific pluralizations you can simply include the
# Pluralization module to the Simple backend - or whatever other backend you
# are using.
#
# I18n::Backend::Simple.send(:include, I18n::Backend::Pluralization)
#
# You also need to make sure to provide pluralization algorithms to the
# backend, i.e. include them to your I18n.load_path accordingly.
module I18n
module Backend
module Pluralization
# Overwrites the Base backend translate method so that it will check the
# translation meta data space (:i18n) for locale specific pluralizers
# and use them to pluralize the given entry.
#
# Pluralizers are expected to respond to #call(entry, count) and return
# a pluralization key. Valid keys depend on the translation data hash
# (entry) but it is generally recommended to follow CLDR's style, i.e.
# return one of the keys :zero, :one, :few, :many, :other.
#
# The :zero key is always picked directly when count equals 0 AND the
# translation data has the key :zero. This way translators are free to
# either pick a special :zero translation even for languages where the
# pluralizer does not return a :zero key.
def pluralize(locale, entry, count)
return entry unless entry.is_a?(Hash) and count
pluralizer = pluralizer(locale)
if pluralizer.respond_to?(:call)
key = count == 0 && entry.has_key?(:zero) ? :zero : pluralizer.call(count)
raise InvalidPluralizationData.new(entry, count) unless entry.has_key?(key)
entry[key]
else
super
end
end
protected
def pluralizers
@pluralizers ||= {}
end
def pluralizer(locale)
pluralizers[locale] ||= lookup(locale, :"i18n.pluralize")
end
end
end
end
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