public Stream Decompress(Stream stream)
{
using (var reader = new FileReader(stream, true))
{
byte type = reader.ReadByte();
if (type == 0x10)
{
uint decomp_size = reader.ReadUInt32();
var sub = new SubStream(stream, 0);
return(new MemoryStream(LZ77_WII.Decompress10(sub.ToArray(), (int)decomp_size)));
}
else if (type == 0x11)
{
uint decomp_size = reader.ReadUInt32();
var sub = new SubStream(stream, 16);
return(new MemoryStream(LZ77_WII.Decompress11(sub.ToArray(), (int)decomp_size)));
}
else
{
return(new MemoryStream());
}
}
}
public void Content()
{
MemoryStream stream = new MemoryStream(new byte[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 });
SubStream subStream = new SubStream(stream, 5);
byte[] result = subStream.ToArray();
Assert.Equal(new byte[] { 6, 7, 8, 9, 10 }, result);
}
public static SarcData UnpackRamN(Stream src)
{
Dictionary <string, Stream> res = new Dictionary <string, Stream>();
BinaryDataReader br = new BinaryDataReader(src, Encoding.UTF8, true);
br.ByteOrder = ByteOrder.LittleEndian;
br.BaseStream.Position = 6;
if (br.ReadUInt16() == 0xFFFE)
{
br.ByteOrder = ByteOrder.BigEndian;
}
br.BaseStream.Position = 0;
if (br.ReadString(4) != "SARC")
{
throw new Exception("Wrong magic");
}
br.ReadUInt16(); // Chunk length
br.ReadUInt16(); // BOM
br.ReadUInt32(); // File size
UInt32 startingOff = br.ReadUInt32();
br.ReadUInt32(); // Unknown;
SFAT sfat = new SFAT();
sfat.parse(br, (int)br.BaseStream.Position);
SFNT sfnt = new SFNT();
sfnt.parse(br, (int)br.BaseStream.Position, sfat, (int)startingOff);
bool HashOnly = false;
if (sfat.nodeCount > 0)
{
if (sfat.nodes[0].fileBool != 1)
{
HashOnly = true;
}
}
for (int m = 0; m < sfat.nodeCount; m++)
{
br.Seek(sfat.nodes[m].nodeOffset + startingOff, 0);
uint size = 0;
if (m == 0)
{
size = sfat.nodes[m].EON;
}
else
{
size = sfat.nodes[m].EON - sfat.nodes[m].nodeOffset;
}
var temp = new SubStream(br.BaseStream, br.Position, size);
if (sfat.nodes[m].fileBool == 1)
{
res.Add(sfnt.fileNames[m], temp);
}
else
{
res.Add(sfat.nodes[m].hash.ToString("X8") + GuessFileExtension(temp.ToArray()), temp);
}
}
return(new SarcData()
{
endianness = br.ByteOrder, HashOnly = HashOnly, Files = res
});
}
