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 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 object PrevObject(DatReader r)
{
int handle = r.ReadInt32() - baseWireHandle;
if (handle >= 0 && handle < r.handles.Count)
{
return(r.handles[handle]);
}
throw new InvalidDataException("Invalid stream handle: " + handle);
}
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 JArray NewArray(DatReader r)
{
JArray array = new JArray();
array.Desc = ClassDesc(r);
r.handles.Add(array);
char type = array.Desc.Name[1];
int size = r.ReadInt32();
if (type == 'B')
{
array.Values = r.ReadBytes(size);
}
else
{
object[] values = new object[size];
for (int i = 0; i < values.Length; i++)
{
values[i] = Value(r, type);
}
array.Values = values;
}
return(array);
}
