public static void AssociateOpcodes()
{
instructions[0] = new NOP();
instructions[1] = new PRNT();
instructions[16] = new PUSH();
instructions[17] = new POP();
instructions[18] = new SAVE();
instructions[19] = new CPY();
instructions[20] = new RNDM();
instructions[21] = new EMPTY();
instructions[128] = new ADD();
instructions[129] = new SUB();
instructions[130] = new MUL();
instructions[131] = new DIV();
instructions[132] = new SUB2();
instructions[133] = new DIV2();
instructions[134] = new NEG();
instructions[135] = new ABS();
instructions[144] = new INC();
instructions[145] = new DEC();
instructions[64] = new JMP();
instructions[65] = new JGZ();
instructions[66] = new JLZ();
instructions[67] = new JEZ();
instructions[68] = new JNZ();
instructions[69] = new CALL();
instructions[70] = new RET();
instructions[71] = new LDLOC();
instructions[72] = new STLOC();
instructions[73] = new LDARG();
instructions[74] = new STARG();
instructions[0b10100100] = new CMP();
protected override void ReadFile(byte[] contents)
{
using (MemoryStream file = new MemoryStream(contents))
using (BinaryRobloxFileReader reader = new BinaryRobloxFileReader(this, 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 BinaryRobloxFile.MagicHeader!");
}
// Read header data.
Version = reader.ReadUInt16();
NumClasses = reader.ReadUInt32();
NumInstances = reader.ReadUInt32();
Reserved = reader.ReadInt64();
// Begin reading the file chunks.
bool reading = true;
Classes = new INST[NumClasses];
Instances = new Instance[NumInstances];
while (reading)
{
try
{
var chunk = new BinaryRobloxFileChunk(reader);
IBinaryFileChunk handler = null;
switch (chunk.ChunkType)
{
case "INST":
handler = new INST();
break;
case "PROP":
handler = new PROP();
break;
case "PRNT":
handler = new PRNT();
break;
case "META":
handler = new META();
break;
case "SSTR":
handler = new SSTR();
break;
case "SIGN":
handler = new SIGN();
break;
case "END\0":
ChunksImpl.Add(chunk);
reading = false;
break;
case string unhandled:
Console.Error.WriteLine("BinaryRobloxFile - Unhandled chunk-type: {0}!", unhandled);
break;
default: break;
}
if (handler != null)
{
using (var readBuffer = new MemoryStream(chunk.Data))
{
using (var dataReader = new BinaryRobloxFileReader(this, readBuffer))
{
chunk.Handler = handler;
handler.Load(dataReader);
}
}
ChunksImpl.Add(chunk);
}
}
catch (EndOfStreamException)
{
throw new Exception("Unexpected end of file!");
}
}
}
}
public override void Save(Stream stream)
{
//////////////////////////////////////////////////////////////////////////
// Generate the chunk data.
//////////////////////////////////////////////////////////////////////////
using (var workBuffer = new MemoryStream())
using (var writer = new BinaryRobloxFileWriter(this, workBuffer))
{
// Clear the existing data.
Referent = "-1";
ChunksImpl.Clear();
NumInstances = 0;
NumClasses = 0;
SSTR = null;
// Recursively capture all instances and classes.
writer.RecordInstances(Children);
// Apply the recorded instances and classes.
writer.ApplyClassMap();
// Write the INST chunks.
foreach (INST inst in Classes)
{
writer.SaveChunk(inst);
}
// Write the PROP chunks.
foreach (INST inst in Classes)
{
var props = PROP.CollectProperties(writer, inst);
foreach (string propName in props.Keys)
{
PROP prop = props[propName];
writer.SaveChunk(prop);
}
}
// Write the PRNT chunk.
var parents = new PRNT();
writer.SaveChunk(parents);
// Write the SSTR chunk.
if (HasSharedStrings)
{
writer.SaveChunk(SSTR, 0);
}
// Write the META chunk.
if (HasMetadata)
{
writer.SaveChunk(META, 0);
}
// Write the SIGN chunk.
if (HasSignatures)
{
writer.SaveChunk(SIGN);
}
// Write the END chunk.
writer.WriteChunk("END", "</roblox>");
}
//////////////////////////////////////////////////////////////////////////
// Write the chunk buffers with the header data
//////////////////////////////////////////////////////////////////////////
using (BinaryWriter writer = new BinaryWriter(stream))
{
stream.Position = 0;
stream.SetLength(0);
writer.Write(MagicHeader
.Select(ch => (byte)ch)
.ToArray());
writer.Write(Version);
writer.Write(NumClasses);
writer.Write(NumInstances);
writer.Write(Reserved);
foreach (BinaryRobloxFileChunk chunk in Chunks)
{
if (chunk.HasWriteBuffer)
{
byte[] writeBuffer = chunk.WriteBuffer;
writer.Write(writeBuffer);
}
}
}
}