internal static DxfClassesSection ClassesSectionFromBuffer(DxfCodePairBufferReader buffer, DxfAcadVersion version)
{
var section = new DxfClassesSection();
section.Clear();
while (buffer.ItemsRemain)
{
var pair = buffer.Peek();
if (DxfCodePair.IsSectionEnd(pair))
{
// done reading classes
buffer.Advance(); // swallow (0, ENDSEC)
break;
}
if (pair.Code != 0)
{
throw new DxfReadException("Expected new class.", pair);
}
var cls = DxfClass.FromBuffer(buffer, version);
if (cls != null)
{
section.Classes.Add(cls);
}
}
return(section);
}
