private CtpCommand Inflate(PacketContents mode, long inflatedSize, byte[] payload)
{
var rv = new byte[inflatedSize];
switch (mode)
{
case PacketContents.CompressedDeflate:
using (var ms = new MemoryStream(payload))
using (var comp = new DeflateStream(ms, CompressionMode.Decompress, true))
{
comp.ReadAll(rv, 0, rv.Length);
}
break;
case PacketContents.CompressedZlib:
if (m_stream == null)
{
m_stream = new MemoryStream();
m_inflate = new DeflateStream(m_stream, CompressionMode.Decompress);
m_inflate.FlushMode = FlushType.Sync;
}
m_stream.Write(payload, 0, payload.Length);
m_stream.Position = 0;
m_inflate.Read(rv, 0, rv.Length);
m_stream.SetLength(0);
break;
default:
throw new ArgumentOutOfRangeException(nameof(mode), mode, null);
}
ReadFromBuffer(out var packet, rv, 0, rv.Length);
return(packet);
}
private static byte[] Inflate(Stream s, string name)
{
InternalErrorException MakeError(Exception e)
{
return(new InternalErrorException($"Failed to decompress {name}", e));
}
try
{
// Eat first two bytes
// See: http://stackoverflow.com/a/21544269/362938
s.ReadByte();
s.ReadByte();
using var deflateStream = new DeflateStream(s, CompressionMode.Decompress);
return(deflateStream.ReadAll());
}
catch (InvalidDataException e)
{
throw MakeError(e);
}
catch (IOException e)
{
throw MakeError(e);
}
}
private static byte[] InflateBuffer(byte[] compressedBuffer, UInt32 decompressedSize)
{
using (MemoryStream ms = new MemoryStream(compressedBuffer))
using (DeflateStream deflateStream = new DeflateStream(ms, CompressionMode.Decompress))
{
byte[] inflated = new byte[decompressedSize];
deflateStream.ReadAll(inflated);
return(inflated);
}
}
public ZLibStream(Stream stream, long length = -1)
{
this.stream = new DeflateStream(stream, CompressionMode.Decompress, leaveOpen: false);
this.length = length;
Span <byte> zlibHeader = stackalloc byte[2];
stream.ReadAll(zlibHeader);
if (zlibHeader[0] != 0x78 || (zlibHeader[1] != 0x01 && zlibHeader[1] != 0x9C))
{
throw new GitException();
}
}
public static byte[] Inflate(byte[] compressed)
{
using var inputStream = new MemoryStream(compressed, false);
using var deflateStream = new DeflateStream(inputStream, CompressionMode.Decompress);
return(deflateStream.ReadAll());
}
