class Excon::Middleware::Decompress

def response_call(datum)
  body = datum[:response][:body]
  if !(datum.key?(:response_block) || body.nil? || body.empty?) &&
     (key = datum[:response][:headers].keys.detect { |k| k.casecmp?('Content-Encoding') })
    encodings = Utils.split_header_value(datum[:response][:headers][key])
    if encodings&.last&.casecmp?('deflate')
      datum[:response][:body] = begin
        Zlib::Inflate.new(INFLATE_ZLIB_OR_GZIP).inflate(body)
      rescue Zlib::DataError # fallback to raw on error
        Zlib::Inflate.new(INFLATE_RAW).inflate(body)
      end
      encodings.pop
    elsif encodings&.last&.casecmp?('gzip') || encodings&.last&.casecmp?('x-gzip')
      datum[:response][:body] = Zlib::GzipReader.new(StringIO.new(body)).read
      encodings.pop
    end
    datum[:response][:headers][key] = encodings.join(', ')
  end
  @stack.response_call(datum)
end