A Zstandard wrapper for .Net
Zstandard is a real-time compression algorithm, providing high compression ratios. It offers a very wide range of compression / speed trade-off, while being backed by a very fast decoder. It also offers a special mode for small data, called dictionary compression, and can create dictionaries from any sample set. Zstandard library is provided as open source software using a BSD license.
http://facebook.github.io/zstd/
byte[] input = GetTestData();
byte[] compressed = null;
byte[] output = null;
// load a dictionary that is trained for the data (optional).
var dictionary = new ZstandardDictionary("loremipsum.zdict");
// compress
using (var memoryStream = new MemoryStream())
using (var compressionStream = new ZstandardStream(memoryStream, CompressionMode.Compress))
{
compressionStream.CompressionLevel = 11; // optional!!
compressionStream.CompressionDictionary = dictionary; // optional!!
compressionStream.Write(input, 0, input.Length);
compressionStream.Close();
compressed = memoryStream.ToArray();
}
// decompress
using (var memoryStream = new MemoryStream(compressed))
using (var compressionStream = new ZstandardStream(memoryStream, CompressionMode.Decompress))
using (var temp = new MemoryStream())
{
compressionStream.CompressionDictionary = dictionary; // optional!!
compressionStream.CopyTo(temp);
output = temp.ToArray();
}
// test output
if (output.SequenceEqual(input) == false)
{
throw new Exception("Output is different from input!");
}Download the library from NuGet: