How do I get a zipped file's content using the rubyzip library?

Zip::ZipFile.open(@file_data.local_path) do |zipfile|
  zipfile.each do |entry|
    next if entry.name =~ /__MACOSX/ or entry.name =~ /.DS_Store/ or !entry.file?

    asset = self.assets.build
    asset.key = entry.name
    asset.data = ??  # what goes here?
  end
end

asset.data = entry.get_input_stream.read

asset.data = entry.read_local_entry {|z| z.read }

data = entry.extract "#{RAILS_ROOT}/#{entry.name}"
asset.data = File.read("#{RAILS_ROOT}/#{entry.name}")

asset.data = zipfile.file.read(entry.name)