private byte[] CreateChunk(ZObject obj, bool bigEndian, ref long offset)
{
using (AwesomeWriter aw = new AwesomeWriter(new MemoryStream(), bigEndian))
{
obj.WriteData(aw);
// Ensures chunk size is always divisible by 4
if (aw.BaseStream.Position % 4 != 0)
{
aw.Write(new byte[4 - (aw.BaseStream.Position % 4)]);
}
offset += aw.BaseStream.Position + 8; // 8 = Chunk Magic + Size
return(((MemoryStream)aw.BaseStream).ToArray());
}
}
private static RiffFile FromStream(Stream stream)
{
RiffFile riff = new RiffFile();
AwesomeReader ar = new AwesomeReader(stream);
// Checks for "RIFF" magic.
switch (ar.ReadInt32())
{
case MAGIC_RIFF:
ar.BigEndian = false;
break;
case MAGIC_RIFF_R:
ar.BigEndian = true;
break;
default:
throw new Exception("Invalid magic. Expected \"RIFF\"");
}
riff.BigEndian = ar.BigEndian; // Sets endianess
ar.BaseStream.Position += 4; // Skips total size
int chunkType = GetChunkType(ar);
if (chunkType != MAGIC_INDX)
{
throw new Exception("First chunk was not an Index!");
}
Index index = new Index(ar);
foreach (IndexEntry entry in index.Entries)
{
ar.BaseStream.Position = entry.Offset; // Jumps to offset
chunkType = GetChunkType(ar);
if (chunkType != MAGIC_STBL && chunkType != MAGIC_ZOBJ)
{
continue;
}
// Reads header info
HKey filePath = new HKey(ar.ReadUInt64());
HKey directoryPath = new HKey(ar.ReadUInt64());
HKey type = new HKey(ar.ReadUInt64());
ar.BaseStream.Position += 8;
if (chunkType == MAGIC_STBL)
{
// Gets localization
if (!StringTable.IsValidLocalization(type))
{
continue;
}
// Loads string table
StringTable table = new StringTable(filePath, directoryPath, StringTable.GetLocalization(type));
table.ReadData(ar);
riff._objects.Add(table);
}
else if (chunkType == MAGIC_ZOBJ)
{
if (!Global.ZObjectTypes.ContainsKey(type))
{
continue; // Unsupported type
}
// Loads zobject
ZObject obj = Activator.CreateInstance(Global.ZObjectTypes[type], new object[] { filePath, directoryPath }) as ZObject;
obj.ReadData(ar);
riff._objects.Add(obj);
}
else
{
// Unknown chunk
continue;
}
}
return(riff);
}
public void AddZObjectAsPending(ZObject obj) => _pendingChanges.Add(obj);
