private VLTBase ReadChunk(BinaryReader br)
{
if (br.BaseStream.Position == br.BaseStream.Length)
{
return(null);
}
VLTChunk chunk = new VLTChunk();
chunk.Read(br);
if (chunk.IsValid)
{
VLTBase vltbase = null;
switch (chunk.ChunkId)
{
case VLTChunkId.Dependency:
vltbase = new VLTDependency();
break;
case VLTChunkId.Strings:
vltbase = new VLTRaw();
break;
case VLTChunkId.Data:
vltbase = new VLTRaw();
break;
case VLTChunkId.Expression:
vltbase = new VLTExpression();
break;
case VLTChunkId.Pointers:
vltbase = new VLTPointers();
break;
default:
vltbase = new VLTRaw();
break;
}
vltbase.Chunk = chunk;
vltbase.Read(br);
chunk.SkipChunk(br.BaseStream);
return(vltbase);
}
else
{
return(null);
}
}
public void Open(Stream vlt, Stream bin)
{
byte[] data = new byte[vlt.Length];
vlt.Read(data, 0, data.Length);
_binVlt = new MemoryStream(data);
_chunks = new ArrayList();
BinaryReader br = new BinaryReader(_binVlt);
// Load up the chunks
VLTBase chunk;
do
{
chunk = ReadChunk(br);
if (chunk != null)
{
_chunks.Add(chunk);
}
} while (chunk != null);
// Load up expression data
VLTExpression expChunk = GetChunk(VLTChunkId.Expression) as VLTExpression;
for (int i = 0; i < expChunk.Count; i++)
{
VLTExpressionBlock block = expChunk[i];
block.ReadData(br);
}
// Load up raw bin data
if (bin == null)
{
DirectoryInfo di = new DirectoryInfo(_baseDir);
VLTDependency dep = GetChunk(VLTChunkId.Dependency) as VLTDependency;
string binName = dep.GetName(VLTDependency.BinFile);
FileInfo[] fi = di.GetFiles(binName);
if (fi.Length == 0)
{
throw new Exception("Required file " + binName + " was not found.");
}
bin = new FileStream(fi[0].FullName, FileMode.Open, FileAccess.Read);
data = new byte[bin.Length];
bin.Read(data, 0, data.Length);
bin.Close();
}
else
{
data = new byte[bin.Length];
bin.Read(data, 0, data.Length);
}
_binRaw = new MemoryStream(data);
br = new BinaryReader(_binRaw);
_binRaw.Seek(0, SeekOrigin.Begin);
chunk = ReadChunk(br);
chunk.Chunk.GotoStart(_binRaw);
if (chunk.Chunk.ChunkId == VLTChunkId.StringsRaw)
{
int endPos = (int)_binRaw.Position + chunk.Chunk.DataLength;
while (_binRaw.Position < endPos)
{
string str = NullTerminatedString.Read(br);
if (str != "")
{
HashResolver.AddAuto(str);
}
}
}
VLTPointers ptrChunk = GetChunk(VLTChunkId.Pointers) as VLTPointers;
ptrChunk.ResolveRawPointers(_binRaw);
}