require 'chrysalis/ar/tar'


module Chrysalis
module Ar

  # Implements support for extracting tar archives compressed with bzip2
  # compression.
  #
  # Archives of this type are identified by the file extension <em>.tar.bz2</em>.
  class TarBz2Archive < TarArchive
    
    EXTENSION = ".tar.bz2".freeze
    
    def self.extracts?(path)
      path.end? EXTENSION
    end
    
    protected
      def flags
        "xjvf"
      end
      
      def extracts_into
        return @extracts_into if @extracts_into
        Pathname.new(@path).basename(EXTENSION)
      end
    
  end

end 
end