[xml] Simple question on going from xmlDocPtr to memory buffer

[Alain Paschoud <paschoud fastcom-technology com>]

Hi all,

I am new with XML, and wrote a program that should do next things:

1) Read and decode a file with DES (no XML functions here), put it in a
memory buffer.
2) Parse the XML which is in the memory buffer. Used : xmlParseMemory()
3) Modify elements. Used : xmlNodeListGetString() and xmlNodeSetContent()
4) "un"parse the xmlDocPtr to get XML ascii in memory
5) Crypt and write this buffer to a file (no XML here)

The problem is on the 4th step : I can't find a function doing the
opposite than xmlParseMemory(). I mean lead from xmlDocPtr type to a XML
in ascii in memory. I found it for writing directly to a file
(xmlSaveFile), but not in memory. Can someone help ?

Thank you very much for any information.

Best regards.
-- 
Alain Paschoud