[xml] Interfacing with libxml2

[Joachim Zobel <jzobel heute-morgen de>]

Hi.

I am currently working on an apache module (mod_expat,
http://www.heute-morgen.de/modules/mod_expat/), that turns xml into a
stream of sax buckets (a double linked list of SAX events more or less)
that can be processed by apache filter modules. 

libxml2 does however have lots of nice stuff (e.g. streamable xpath
subset), that I would like to use. This would mean that I have to hand
my sax buckets back to libxml2 after intermediate filters have processed
them. Is there a way to do that? Can this be done with customized IO?

Thx,
Joachim