public static byte[] Compress(byte[] buffer, LZ77Algorithm algorithm)
{
using (MemoryStream ms = new MemoryStream())
{
using (Stream cs = New(ms, CompressionMode.Compress, algorithm))
{
cs.Write(buffer, 0, buffer.Length);
}
return(ms.ToArray());
}
}
private static Stream New(Stream stream, CompressionMode mode, LZ77Algorithm algorithm)
{
if (algorithm == LZ77Algorithm.GZip)
{
return(new GZipStream(stream, mode));
}
if (algorithm == LZ77Algorithm.Deflate)
{
return(new DeflateStream(stream, mode));
}
throw new NotSupportedException("algorithm");
}
public static byte[] Decompress(byte[] buffer, LZ77Algorithm algorithm)
{
using (MemoryStream ms = new MemoryStream(buffer))
{
using (Stream ds = New(ms, CompressionMode.Decompress, algorithm))
{
using (MemoryStream ss = new MemoryStream())
{
byte[] tmp = new byte[1024];
int size = 0;
while ((size = ds.Read(tmp, 0, tmp.Length)) > 0)
{
ss.Write(tmp, 0, size);
}
return(ss.ToArray());
}
}
}
}
