export script to export mesh animation/animated transform?

What i ultimately need is an ase export plugin that exports modell hirarchy, mesh animation and animated transformations. It does not seem to exist currently so i am looking into the possibility to do it myself, but i need more info about it. Does anybody know about other plugins that can do this and where i can peek or can anybody give me informations on how to get the needed information otherwise?
Thank you
Jan Jordan