Code readability

[M0OPK]

Generally in the classes for specific functions this is fine, but for the main builder process it could do with breaking down some more to clarify what's happening and where.

[M0OPK]

Some update on this, I think a rewrite of the core classes is in order. Mainly to provide some proper inheritance (XML->XMLTV->XMLTV_SD for example). Including the XMLTV indexing as an extension to XMLDocument perhaps. Some investigation needed here.