86 lines
2.8 KiB
Ruby
86 lines
2.8 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
require 'i18n/gettext'
|
|
require 'i18n/gettext/po_parser'
|
|
|
|
module I18n
|
|
module Backend
|
|
# Experimental support for using Gettext po files to store translations.
|
|
#
|
|
# To use this you can simply include the module to the Simple backend - or
|
|
# whatever other backend you are using.
|
|
#
|
|
# I18n::Backend::Simple.include(I18n::Backend::Gettext)
|
|
#
|
|
# Now you should be able to include your Gettext translation (*.po) files to
|
|
# the +I18n.load_path+ so they're loaded to the backend and you can use them as
|
|
# usual:
|
|
#
|
|
# I18n.load_path += Dir["path/to/locales/*.po"]
|
|
#
|
|
# Following the Gettext convention this implementation expects that your
|
|
# translation files are named by their locales. E.g. the file en.po would
|
|
# contain the translations for the English locale.
|
|
#
|
|
# To translate text <b>you must use</b> one of the translate methods provided by
|
|
# I18n::Gettext::Helpers.
|
|
#
|
|
# include I18n::Gettext::Helpers
|
|
# puts _("some string")
|
|
#
|
|
# Without it strings containing periods (".") will not be translated.
|
|
|
|
module Gettext
|
|
using I18n::HashRefinements
|
|
|
|
class PoData < Hash
|
|
def set_comment(msgid_or_sym, comment)
|
|
# ignore
|
|
end
|
|
end
|
|
|
|
protected
|
|
def load_po(filename)
|
|
locale = ::File.basename(filename, '.po').to_sym
|
|
data = normalize(locale, parse(filename))
|
|
{ locale => data }
|
|
end
|
|
|
|
def parse(filename)
|
|
GetText::PoParser.new.parse(::File.read(filename), PoData.new)
|
|
end
|
|
|
|
def normalize(locale, data)
|
|
data.inject({}) do |result, (key, value)|
|
|
unless key.nil? || key.empty?
|
|
key = key.gsub(I18n::Gettext::CONTEXT_SEPARATOR, '|')
|
|
key, value = normalize_pluralization(locale, key, value) if key.index("\000")
|
|
|
|
parts = key.split('|').reverse
|
|
normalized = parts.inject({}) do |_normalized, part|
|
|
{ part => _normalized.empty? ? value : _normalized }
|
|
end
|
|
|
|
result.deep_merge!(normalized)
|
|
end
|
|
result
|
|
end
|
|
end
|
|
|
|
def normalize_pluralization(locale, key, value)
|
|
# FIXME po_parser includes \000 chars that can not be turned into Symbols
|
|
key = key.gsub("\000", I18n::Gettext::PLURAL_SEPARATOR).split(I18n::Gettext::PLURAL_SEPARATOR).first
|
|
|
|
keys = I18n::Gettext.plural_keys(locale)
|
|
values = value.split("\000")
|
|
raise "invalid number of plurals: #{values.size}, keys: #{keys.inspect} on #{locale} locale for msgid #{key.inspect} with values #{values.inspect}" if values.size != keys.size
|
|
|
|
result = {}
|
|
values.each_with_index { |_value, ix| result[keys[ix]] = _value }
|
|
[key, result]
|
|
end
|
|
|
|
end
|
|
end
|
|
end
|