public static async Task<byte[]> CompressionByteAsync(byte[] str, CompressionType compressionType)
{
if (str == null)
{
return null;
}
using (var output = new MemoryStream())
{
switch (compressionType)
{
case CompressionType.Deflate:
using (
var compressor = new Ionic.Zlib.DeflateStream(
output, Ionic.Zlib.CompressionMode.Compress,
Ionic.Zlib.CompressionLevel.BestSpeed))
{
await compressor.WriteAsync(str, 0, str.Length);
//compressor.Write(str, 0, str.Length);
}
break;
case CompressionType.GZip:
using (
var compressor = new Ionic.Zlib.GZipStream(
output, Ionic.Zlib.CompressionMode.Compress,
Ionic.Zlib.CompressionLevel.BestSpeed))
{
await compressor.WriteAsync(str, 0, str.Length);
//compressor.Write(str, 0, str.Length);
}
break;
case CompressionType.Zlib:
using (
var compressor = new Ionic.Zlib.ZlibStream(
output, Ionic.Zlib.CompressionMode.Compress,
Ionic.Zlib.CompressionLevel.BestSpeed))
{
await compressor.WriteAsync(str, 0, str.Length);
//compressor.Write(str, 0, str.Length);
}
break;
}
return output.ToArray();
}
}
