internal override void UnserializeChunk(UndertaleReader reader)
{
Chunks.Clear();
uint startPos = reader.Position;
// First, find the last chunk in the file because of padding changes
// (also, calculate all present chunks while we're at it)
reader.AllChunkNames = new List <string>();
string lastChunk = "";
while (reader.Position < reader.BaseStream.Length)
{
lastChunk = new string(reader.ReadChars(4));
reader.AllChunkNames.Add(lastChunk);
uint length = reader.ReadUInt32();
reader.Position += length;
}
reader.LastChunkName = lastChunk;
reader.Position = startPos;
// Now, parse the chunks
while (reader.Position < startPos + Length)
{
UndertaleChunk chunk = reader.ReadUndertaleChunk();
if (chunk != null)
{
if (Chunks.ContainsKey(chunk.Name))
{
throw new IOException("Duplicate chunk " + chunk.Name);
}
Chunks.Add(chunk.Name, chunk);
}
}
}
public static UndertaleChunk Unserialize(UndertaleReader reader)
{
string name = "(unknown)";
try
{
name = new string(reader.ReadChars(4));
uint length = reader.ReadUInt32();
// TODO: I can't think of a cleaner way to do this...
Type type = Type.GetType(typeof(UndertaleChunk).FullName + name);
if (type == null)
{
throw new IOException("Unknown chunk " + name + "!!!");
/*Debug.WriteLine("Unknown chunk " + name + "!!!");
* reader.Position = reader.Position + length;
* return null;*/
}
UndertaleChunk chunk = (UndertaleChunk)Activator.CreateInstance(type);
Debug.Assert(chunk.Name == name);
chunk.Length = length;
Debug.WriteLine("Reading chunk " + chunk.Name);
var lenReader = reader.EnsureLengthFromHere(chunk.Length);
chunk.UnserializeChunk(reader);
if (name != "FORM" && name != "AUDO") // TODO: needs a better way to detect last chunk
{
UndertaleGeneralInfo generalInfo = name == "GEN8" ? ((UndertaleChunkGEN8)chunk).Object : reader.undertaleData.GeneralInfo;
// These versions introduced new padding
// all chunks now start on 16-byte boundaries
// (but the padding is included with length of previous chunk)
if (generalInfo.Major >= 2 || (generalInfo.Major == 1 && generalInfo.Build >= 9999))
{
while (reader.Position % 16 != 0)
{
if (reader.ReadByte() != 0)
{
throw new Exception("Chunk padding error");
}
}
}
}
lenReader.ToHere();
return(chunk);
}
catch (UndertaleSerializationException e)
{
throw new UndertaleSerializationException(e.Message + " in chunk " + name);
}
catch (Exception e)
{
throw new UndertaleSerializationException(e.Message + "\nat " + reader.Position.ToString("X8") + " while reading chunk " + name, e);
}
}
internal override void UnserializeChunk(UndertaleReader reader)
{
Chunks.Clear();
uint startPos = reader.Position;
while (reader.Position < startPos + Length)
{
UndertaleChunk chunk = reader.ReadUndertaleChunk();
if (chunk != null)
{
if (Chunks.ContainsKey(chunk.Name))
{
throw new IOException("Duplicate chunk " + chunk.Name);
}
Chunks.Add(chunk.Name, chunk);
}
}
}