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5551871086
It version applied `frozen_string_literal: true` git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60920 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
102 lines
2.3 KiB
Ruby
102 lines
2.3 KiB
Ruby
# frozen_string_literal: true
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##
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# A message container for a locale.
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#
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# This object provides the following two features:
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#
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# * Loads translated messages from .po file.
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# * Translates a message into the locale.
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class RDoc::I18n::Locale
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@@locales = {} # :nodoc:
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class << self
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##
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# Returns the locale object for +locale_name+.
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def [](locale_name)
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@@locales[locale_name] ||= new(locale_name)
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end
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##
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# Sets the locale object for +locale_name+.
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#
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# Normally, this method is not used. This method is useful for
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# testing.
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def []=(locale_name, locale)
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@@locales[locale_name] = locale
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end
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end
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##
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# The name of the locale. It uses IETF language tag format
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# +[language[_territory][.codeset][@modifier]]+.
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#
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# See also {BCP 47 - Tags for Identifying
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# Languages}[http://tools.ietf.org/rfc/bcp/bcp47.txt].
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attr_reader :name
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##
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# Creates a new locale object for +name+ locale. +name+ must
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# follow IETF language tag format.
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def initialize(name)
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@name = name
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@messages = {}
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end
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##
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# Loads translation messages from +locale_directory+/+@name+/rdoc.po
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# or +locale_directory+/+@name+.po. The former has high priority.
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#
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# This method requires gettext gem for parsing .po file. If you
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# don't have gettext gem, this method doesn't load .po file. This
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# method warns and returns +false+.
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#
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# Returns +true+ if succeeded, +false+ otherwise.
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def load(locale_directory)
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return false if @name.nil?
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po_file_candidates = [
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File.join(locale_directory, @name, 'rdoc.po'),
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File.join(locale_directory, "#{@name}.po"),
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]
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po_file = po_file_candidates.find do |po_file_candidate|
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File.exist?(po_file_candidate)
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end
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return false unless po_file
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begin
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require 'gettext/po_parser'
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require 'gettext/mo'
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rescue LoadError
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warn('Need gettext gem for i18n feature:')
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warn(' gem install gettext')
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return false
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end
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po_parser = GetText::POParser.new
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messages = GetText::MO.new
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po_parser.report_warning = false
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po_parser.parse_file(po_file, messages)
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@messages.merge!(messages)
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true
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end
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##
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# Translates the +message+ into locale. If there is no translation
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# messages for +message+ in locale, +message+ itself is returned.
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def translate(message)
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@messages[message] || message
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end
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end
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