class RDoc::I18n::Locale

frozen_string_literal: true

A message container for a locale.

This object provides the following two features:

* Loads translated messages from .po file.
* Translates a message into the locale.

Attributes

name[R]

The name of the locale. It uses IETF language tag format +[language[.codeset]]+.

Public Class Methods

[](locale_name) click to toggle source

Returns the locale object for locale_name.

# File lib/rdoc/i18n/locale.rb, line 19
def [](locale_name)
  @@locales[locale_name] ||= new(locale_name)
end

[]=(locale_name, locale) click to toggle source

Sets the locale object for locale_name.

Normally, this method is not used. This method is useful for testing.

# File lib/rdoc/i18n/locale.rb, line 29
def []=(locale_name, locale)
  @@locales[locale_name] = locale
end

new(name) click to toggle source

Creates a new locale object for name locale. name must follow IETF language tag format.

# File lib/rdoc/i18n/locale.rb, line 48
def initialize(name)
  @name = name
  @messages = {}
end

Public Instance Methods

load(locale_directory) click to toggle source

Loads translation messages from locale_directory/+@name+/rdoc.po or locale_directory/+@name+.po. The former has high priority.

This method requires gettext gem for parsing .po file. If you don't have gettext gem, this method doesn't load .po file. This method warns and returns false.

Returns true if succeeded, false otherwise.

# File lib/rdoc/i18n/locale.rb, line 63
def load(locale_directory)
  return false if @name.nil?

  po_file_candidates = [
    File.join(locale_directory, @name, 'rdoc.po'),
    File.join(locale_directory, "#{@name}.po"),
  ]
  po_file = po_file_candidates.find do |po_file_candidate|
    File.exist?(po_file_candidate)
  end
  return false unless po_file

  begin
    require 'gettext/po_parser'
    require 'gettext/mo'
  rescue LoadError
    warn('Need gettext gem for i18n feature:')
    warn('  gem install gettext')
    return false
  end

  po_parser = GetText::POParser.new
  messages = GetText::MO.new
  po_parser.report_warning = false
  po_parser.parse_file(po_file, messages)

  @messages.merge!(messages)

  true
end

translate(message) click to toggle source

Translates the message into locale. If there is no translation messages for message in locale, message itself is returned.

# File lib/rdoc/i18n/locale.rb, line 98
def translate(message)
  @messages[message] || message
end