reading epub in haiku

Hello,

I think it would be cool to be able to natively read in Haiku ebooks in the epub format (I don't talk about drm here).
There are a couple firefox extensions for doing this, but one is not compatible with firefox 2 and the other one is quite outdated and doesn't seem to correctly display epub using utf8 characters.

Porting calibre could be a solution (there is a good ebook reader with it), as it's using Qt.