WIKI based on XML/XSLT

[robby]

Greetings,
I want to find such a system , looks like a WIKI system could deal
with XML.
that is,
1) documents version control
2) documents edit with cooperation
3) documents with the source format XML
4) documents auto-generating to HTML (PDF is also required)
5) But from the guest view of point, he/she will see HTML format from
the web

looks like wiki, when click the button "save", it will present HTML web
to you.
Also I want to the function "Generate PDF". XSLT is used inside.


Could you give me a hint?
TIA

Robby