class Excon::Middleware::Decompress

def response_call(datum)
  unless datum.has_key?(:response_block)
    case datum[:response][:headers]['Content-Encoding']
    when 'deflate'
      # assume inflate omits header
      datum[:response][:body] = Zlib::Inflate.new(-Zlib::MAX_WBITS).inflate(datum[:response][:body])
    when 'gzip'
      datum[:response][:body] = Zlib::GzipReader.new(StringIO.new(datum[:response][:body])).read
    end
  end
  @stack.response_call(datum)
end