public META(RobloxBinaryChunk chunk)
{
using (RobloxBinaryReader reader = chunk.GetReader("META"))
{
NumEntries = reader.ReadInt32();
Entries = new Dictionary <string, string>(NumEntries);
for (int i = 0; i < NumEntries; i++)
{
string key = reader.ReadString();
string value = reader.ReadString();
Entries.Add(key, value);
}
}
}
public PROP(RobloxBinaryChunk chunk)
{
Reader = chunk.GetReader("PROP");
TypeIndex = Reader.ReadInt32();
Name = Reader.ReadString();
try
{
byte propType = Reader.ReadByte();
Type = (PropertyType)propType;
}
catch
{
Type = PropertyType.Unknown;
}
}
public RobloxBinaryChunk(RobloxBinaryReader reader)
{
byte[] bChunkType = reader.ReadBytes(4);
ChunkType = Encoding.ASCII.GetString(bChunkType);
CompressedSize = reader.ReadInt32();
Size = reader.ReadInt32();
Reserved = reader.ReadBytes(4);
if (HasCompressedData)
{
CompressedData = reader.ReadBytes(CompressedSize);
Data = LZ4Codec.Decode(CompressedData, 0, CompressedSize, Size);
}
else
{
Data = reader.ReadBytes(Size);
}
}
public RobloxBinaryFile(byte[] contents)
{
using (MemoryStream file = new MemoryStream(contents))
using (RobloxBinaryReader reader = new RobloxBinaryReader(file))
{
// Verify the signature of the file.
byte[] binSignature = reader.ReadBytes(14);
string signature = Encoding.UTF7.GetString(binSignature);
if (signature != MagicHeader)
{
throw new InvalidDataException("Provided file's signature does not match RobloxBinaryFile.MagicHeader!");
}
// Read header data.
Version = reader.ReadUInt16();
NumTypes = reader.ReadUInt32();
NumInstances = reader.ReadUInt32();
Reserved = reader.ReadBytes(8);
// Begin reading the file chunks.
bool reading = true;
Types = new INST[NumTypes];
Instances = new FileInstance[NumInstances];
while (reading)
{
try
{
RobloxBinaryChunk chunk = new RobloxBinaryChunk(reader);
Chunks.Add(chunk);
switch (chunk.ChunkType)
{
case "INST":
INST type = new INST(chunk);
type.Allocate(this);
break;
case "PROP":
PROP prop = new PROP(chunk);
prop.ReadProperties(this);
break;
case "PRNT":
PRNT hierarchy = new PRNT(chunk);
hierarchy.Assemble(this);
break;
case "META":
Metadata = new META(chunk);
break;
case "END\0":
reading = false;
break;
default:
Chunks.Remove(chunk);
break;
}
}
catch (EndOfStreamException)
{
throw new Exception("Unexpected end of file!");
}
}
}
}