private void ParseBundleFormat6(EndianStream stream, bool isPadding)
{
long bundleSize = stream.ReadInt64();
int compressSize = stream.ReadInt32();
int decompressSize = stream.ReadInt32();
int flag = stream.ReadInt32();
if (isPadding)
{
stream.BaseStream.Position++;
}
long blockPosition;
long dataPosition;
int isDataFirst = flag & 0x80;
if (isDataFirst != 0)
{
blockPosition = stream.BaseStream.Length - compressSize;
dataPosition = stream.BaseStream.Position;
}
else
{
blockPosition = stream.BaseStream.Position;
dataPosition = stream.BaseStream.Position + compressSize;
}
stream.BaseStream.Position = blockPosition;
BundleCompressType compressType = (BundleCompressType)(flag & 0x3F);
switch (compressType)
{
case BundleCompressType.None:
ParseBundle6BlockInfo(stream, ref blockPosition, stream, ref dataPosition);
ParseBundle6Files(stream, ref blockPosition, stream, ref dataPosition);
break;
case BundleCompressType.LZMA:
using (MemoryStream memStream = SevenZipHelper.DecompressLZMASSizeStream(stream.BaseStream, compressSize))
{
using (EndianStream decBlockStream = new EndianStream(memStream, EndianType.BigEndian))
{
// update position acerding to newly created stream
blockPosition = 0;
using (EndianStream decDataStream = ParseBundle6BlockInfo(decBlockStream, ref blockPosition, stream, ref dataPosition))
{
ParseBundle6Files(decBlockStream, ref blockPosition, decDataStream, ref dataPosition);
}
}
}
break;
case BundleCompressType.LZ4:
case BundleCompressType.LZ4HZ:
using (MemoryStream memStream = new MemoryStream(decompressSize))
{
using (Lz4Stream lzStream = new Lz4Stream(stream.BaseStream, compressSize))
{
lzStream.Read(memStream, decompressSize);
}
using (EndianStream decBlockStream = new EndianStream(memStream, EndianType.BigEndian))
{
// update position acerding to newly created stream
blockPosition = 0;
using (EndianStream decDataStream = ParseBundle6BlockInfo(decBlockStream, ref blockPosition, stream, ref dataPosition))
{
ParseBundle6Files(decBlockStream, ref blockPosition, decDataStream, ref dataPosition);
}
}
}
break;
default:
throw new NotImplementedException($"Bundle compression '{compressType}' isn't supported");
}
}
