vendor/plugins/i18n_data/lib/i18n_data/file_data_provider.rb

   1 module I18nData
   2   module FileDataProvider
   3     DATA_SEPERATOR = ";;"
   4     extend self
   5
   6     def codes(type,language_code)
   7       unless data = read_from_file(type,language_code)
   8         raise NoTranslationAvailable.new("#{type}-#{language_code}")
   9       end
  10       data
  11     end
  12
  13     def write_cache(provider)
  14       languages = provider.codes(:languages,'EN').keys
  15       languages.each{|language_code|
  16         [:languages,:countries].each {|type|
  17           begin
  18             data = provider.send(:codes,type,language_code)
  19             write_to_file(data,type,language_code)
  20           rescue NoTranslationAvailable
  21           end
  22         }
  23       }
  24     end
  25
  26   private
  27
  28     def read_from_file(type,language_code)
  29       file = cache_for(type,language_code)
  30       return nil unless File.exist?(file)
  31       data = {}
  32       IO.read(file).split("\n").each{|line|
  33         code, translation = line.split(DATA_SEPERATOR)
  34         data[code] = translation
  35       }
  36       data
  37     end
  38
  39     def write_to_file(data,type,language_code)
  40       return if data.empty?
  41       file = cache_for(type,language_code)
  42       FileUtils.mkdir_p(File.dirname(file))
  43       File.open(file,'w') do |f|
  44         f.puts data.map{|code,translation|"#{code}#{DATA_SEPERATOR}#{translation}"} * "\n"
  45       end
  46     end
  47
  48     def cache_for(type,language_code)
  49       cache("#{type}-#{language_code}")
  50     end
  51
  52     def cache(file)
  53       File.join(File.dirname(__FILE__),'..','..','cache','file_data_provider',"#{file}.txt")
  54     end
  55   end
  56 end