vendor/plugins/gibberish/lib/gibberish/localize.rb

   1 module Gibberish
   2   module Localize
   3     @@default_language = :en
   4     mattr_reader :default_language
   5
   6     @@reserved_keys = [ :limit ]
   7     mattr_reader :reserved_keys
   8
   9     def add_reserved_key(*key)
  10       (@@reserved_keys += key.flatten).uniq!
  11     end
  12     alias :add_reserved_keys :add_reserved_key
  13
  14     @@languages = {}
  15     def languages
  16       @@languages.keys
  17     end
  18
  19     @@current_language = nil
  20     def current_language
  21       @@current_language || default_language
  22     end
  23
  24     def current_language=(language)
  25       load_languages! if defined? RAILS_ENV && RAILS_ENV == 'development'
  26
  27       language = language.to_sym if language.respond_to? :to_sym
  28       @@current_language = @@languages[language] ? language : nil
  29     end
  30
  31     def use_language(language)
  32       start_language = current_language
  33       self.current_language = language
  34       yield
  35       self.current_language = start_language
  36     end
  37
  38     def default_language?
  39       current_language == default_language
  40     end
  41
  42     def translations
  43       @@languages[current_language] || {}
  44     end
  45
  46     def translate(string, key, *args)
  47       return if reserved_keys.include? key
  48       target = translations[key] || string
  49       interpolate_string(target.dup, *args.dup)
  50     end
  51
  52     def load_languages!
  53       language_files.each do |file|
  54         key = File.basename(file, '.*').to_sym
  55         @@languages[key] = YAML.load_file(file).symbolize_keys
  56       end
  57       languages
  58     end
  59
  60   private
  61     def interpolate_string(string, *args)
  62       string.gsub(/\{\w+\}/) { args.shift }
  63     end
  64
  65     def language_files
  66       Dir[File.join(RAILS_ROOT, 'lang', '*.{yml,yaml}')]
  67     end
  68   end
  69 end