public override Level Read(Stream src, string name, bool metadata)
{
using (GZipStream s = new GZipStream(src, CompressionMode.Decompress)) {
Level lvl = new Level(name, 0, 0, 0);
DatReader r = new DatReader();
r.src = new BinaryReader(s);
int signature = r.ReadInt32();
// Format version 0 - preclassic to classic 0.12
// (technically this format doesn't have a signature,
// but 99% of such maps will start with these 4 bytes)
if (signature == 0x01010101)
{
return(ReadFormat0(lvl, s));
}
// All valid .dat maps must start with these 4 bytes
if (signature != 0x271BB788)
{
throw new InvalidDataException("Invalid .dat map signature");
}
switch (r.ReadUInt8())
{
// Format version 1 - classic 0.13
case 0x01: return(ReadFormat1(lvl, r));
// Format version 2 - classic 0.15 to 0.30
case 0x02: return(ReadFormat2(lvl, r));
}
throw new InvalidDataException("Invalid .dat map version");
}
}
public override Level Read(Stream src, string name, bool metadata)
{
using (GZipStream s = new GZipStream(src, CompressionMode.Decompress)) {
Level lvl = new Level(name, 0, 0, 0);
DatReader r = new DatReader();
r.src = new BinaryReader(s);
if (r.ReadInt32() != 0x271BB788 || r.ReadUInt8() != 0x02)
{
throw new InvalidDataException("Unexpected constant in .dat file");
}
if (r.ReadUInt16() != 0xACED)
{
throw new InvalidDataException("Invalid stream magic");
}
if (r.ReadUInt16() != 0x0005)
{
throw new InvalidDataException("Invalid stream version");
}
JObject obj = (JObject)ReadObject(r);
ParseRootObject(lvl, obj);
return(lvl);
}
}
static void SkipAnnotation(DatReader r)
{
byte typeCode;
while ((typeCode = r.ReadUInt8()) != TC_ENDBLOCKDATA)
{
if (typeCode == TC_BLOCKDATA)
{
r.ReadBytes(r.ReadUInt8());
}
else
{
ReadObject(r, typeCode);
}
}
}
static unsafe object Value(DatReader r, char type)
{
if (type == 'B')
{
return(r.ReadUInt8());
}
if (type == 'C')
{
return((char)r.ReadUInt16());
}
if (type == 'D')
{
long tmp = r.ReadInt64(); return(*(double *)(&tmp));
}
if (type == 'F')
{
int tmp = r.ReadInt32(); return(*(float *)(&tmp));
}
if (type == 'I')
{
return(r.ReadInt32());
}
if (type == 'J')
{
return(r.ReadInt64());
}
if (type == 'S')
{
return(r.ReadInt16());
}
if (type == 'Z')
{
return(r.ReadUInt8() != 0);
}
if (type == 'L')
{
return(ReadObject(r));
}
if (type == '[')
{
return(ReadObject(r));
}
throw new InvalidDataException("Invalid value code: " + type);
}
static void SkipAnnotation(DatReader r)
{
byte typeCode;
while ((typeCode = r.ReadUInt8()) != TC_ENDBLOCKDATA)
{
ReadContent(r, typeCode);
}
}
static object ReadContent(DatReader r, byte typeCode)
{
if (typeCode == TC_BLOCKDATA)
{
return(r.ReadBytes(r.ReadUInt8()));
}
else if (typeCode == TC_BLOCKDATALONG)
{
return(r.ReadBytes(r.ReadInt32()));
}
else
{
return(ReadObject(r, typeCode));
}
}
static JClassDesc ClassDesc(DatReader r)
{
byte typeCode = r.ReadUInt8();
if (typeCode == TC_CLASSDESC)
{
return(NewClassDesc(r));
}
if (typeCode == TC_NULL)
{
return(null);
}
if (typeCode == TC_REFERENCE)
{
return((JClassDesc)PrevObject(r));
}
throw new InvalidDataException("Invalid type code: " + typeCode);
}
static JClassDesc NewClassDesc(DatReader r)
{
JClassDesc desc = new JClassDesc();
desc.Name = r.ReadUtf8();
r.ReadInt64(); // serial UID
r.handles.Add(desc);
// read class desc info
desc.Flags = r.ReadUInt8();
desc.Fields = new JFieldDesc[r.ReadUInt16()];
for (int i = 0; i < desc.Fields.Length; i++)
{
desc.Fields[i] = FieldDesc(r);
}
SkipAnnotation(r);
desc.SuperClass = ClassDesc(r);
return(desc);
}
static JFieldDesc FieldDesc(DatReader r)
{
JFieldDesc desc = new JFieldDesc();
byte type = r.ReadUInt8();
desc.Type = (char)type;
if (type == 'B' || type == 'C' || type == 'D' || type == 'F' || type == 'I' || type == 'J' || type == 'S' || type == 'Z')
{
desc.Name = r.ReadUtf8();
}
else if (type == '[' || type == 'L')
{
desc.Name = r.ReadUtf8();
desc.ClassName = (string)ReadObject(r);
}
else
{
throw new InvalidDataException("Invalid field type: " + type);
}
return(desc);
}
static object ReadObject(DatReader r)
{
return(ReadObject(r, r.ReadUInt8()));
}
