public SpritzOutputStream(final Optional<String> fname, final String key, final OutputStream out)
throws IOException {
internalName = fname;
encrypter = new SpritzEncrypter(key, out);
byte[] nameBytes =
fname
.map(n -> new File(n).getName())
.orElse("")
.getBytes(java.nio.charset.StandardCharsets.UTF_8);
encrypter.write(nameBytes.length);
encrypter.write(nameBytes);
final Deflater zlibAlgo = new Deflater(Deflater.BEST_COMPRESSION);
deflater = new DeflaterOutputStream(encrypter, zlibAlgo);
}
@Override
public void close() throws Exception {
deflater.finish();
deflater.close();
encrypter.close();
}