public DeltaFragment(IStorage delta)
{
Delta = delta;
if (Delta.GetSize() < 0x40)
{
throw new InvalidDataException("Delta file is too small.");
}
Header = new DeltaFragmentHeader(delta.AsFile(OpenMode.Read));
if (Header.Magic != Ndv0Magic)
{
throw new InvalidDataException("NDV0 magic value is missing.");
}
long fragmentSize = Header.FragmentHeaderSize + Header.FragmentBodySize;
if (Delta.GetSize() < fragmentSize)
{
throw new InvalidDataException($"Delta file is smaller than the header indicates. (0x{fragmentSize} bytes)");
}
ParseDeltaStructure();
}
