[Wikitext-l] Parsing wikitext files

Hi,

I am new to the list. I would like to parse wikitext files from wikipedia and have some doubts:

1) what is the best parser that gets the best rendering for wikipedia content ? And the fastest parser ?

2) If I decide to write my parser, how can I handle rendering of infoboxes/macros ? Maybe the idea is to parse the wikitext but handle the macros/infoboxes/templates with a separate library (as I imagine there are lots of different templates and it might be silly to try to parse/render each one as this might be handled well for existing libraries)

thanks and regards jose