Looping input and output in XProc

Hi Folks

I have a problem that is best expressed as something like this (given an xml document xmldoc initialised to the initial input)

1. fetch URL for XSLT from list
2. Load XSLT file
2. process xmldoc with XSLT
3. set xmldoc to result
4. fetch next file from from list. If found go to 1. If not emit current xmldoc

The problem is that I have an arbitrary collection of XSLT stylesheets that I need to apply to an XML document passing the result of the first transform to the second XSLT and so on. Right now, the only thing I can see to do is to use another bit of XSLT to generate an XProc pipeline and execute that. I would prefer to be able to do this without that and simply express this as some sort of iteration in XProc. 

I haven't been able to think of a way that I can express this in XProc. Anyone get some spare intuition?


thanks
nic
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