Neu in .NET 9.0 [25]: Einstellungen für die Komprimierung mit ZLib und Brotli

public class FCL9_Compression
{
 
 string GetText(int length = 1)
 {
  string text = "Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.";
  // length * text
  for (int i = 0; i < length; i++) text += text;
  Console.WriteLine("Länge Originaltext: " + text.Length);
  return text;
 }
 
 public void ZLib()
 {
  string text = GetText(3);
  int level = 5; // 0-9
  var uncompressedStream = new MemoryStream(Encoding.UTF8.GetBytes(text));
  var compressedStream = new MemoryStream();
  using var zipStream = new ZLibStream(compressedStream, new ZLibCompressionOptions() { CompressionLevel = level, CompressionStrategy = ZLibCompressionStrategy.Default });
  uncompressedStream.CopyTo(zipStream);
  zipStream.Flush();
  Console.WriteLine($"Länge bei ZLib-Komprimierungslevel #{level}: " + compressedStream.Length);
  zipStream.Dispose();
 }
 
 public void Brotli()
 {
  string text = GetText(3);
  int quality = 5; // 0-11
  var uncompressedStream = new MemoryStream(Encoding.UTF8.GetBytes(text));
  var compressedStream = new MemoryStream();
  using var brotliStream = new BrotliStream(compressedStream, new BrotliCompressionOptions() { Quality = quality });
  uncompressedStream.CopyTo(brotliStream);
  brotliStream.Flush();
  Console.WriteLine($"Länge bei Brotli-Komprimierungslevel #{quality}: " + compressedStream.Length);
  brotliStream.Dispose();
 }
 
 public void ZLibAndBrotliComparison()
 {
  CUI.Demo();
 
  string text = GetText(3);
 
  for (int i = 0; i <= 9; i++)
  {
   var uncompressedStream = new MemoryStream(Encoding.UTF8.GetBytes(text));
   var compressedStream = new MemoryStream();
   using var zipStream = new ZLibStream(compressedStream, new ZLibCompressionOptions() { CompressionLevel = i, CompressionStrategy = ZLibCompressionStrategy.Default });
   uncompressedStream.CopyTo(zipStream);
   zipStream.Flush();
   Console.WriteLine($"Länge bei ZLib-Komprimierungslevel #{i}: " + compressedStream.Length);
   zipStream.Dispose();
  }
 
  for (int i = 0; i <= 11; i++)
  {
   // Kopiere den Text in einen MemoryStream
   var uncompressedStream = new MemoryStream(Encoding.UTF8.GetBytes(text));
   var compressedStream = new MemoryStream();
   using var brotliStream = new BrotliStream(compressedStream, new BrotliCompressionOptions() { Quality = i });
   uncompressedStream.CopyTo(brotliStream);
   brotliStream.Flush();
   Console.WriteLine($"Länge bei Brotli-Komprimierungslevel #{i}: " + compressedStream.Length);
   brotliStream.Dispose();
 
   //// Dekomprimiere den Text wieder
   //compressedStream.Position = 0;
   //var decompressedStream = new MemoryStream();
   //using var brotliDecompressionStream = new BrotliStream(compressedStream, CompressionMode.Decompress);
   //brotliDecompressionStream.CopyTo(decompressedStream);
   //brotliDecompressionStream.Flush(); 
   //Console.WriteLine("Dekomprimierter Text);
   //string text2 = Encoding.UTF8.GetString(decompressedStream.ToArray());
   //Console.WriteLine("Dekomprimierter Text: " + text2.Length);
  }
 
 }
}