[Slashcode-development] FOAF export support for Zoo

[Oliver M. B. <ol...@fa...>]

With final exams closing in on me, I coded up support for FOAF
(Friend of a Friend, http://www.foaf-project.org/) for the
Zoo plugin.

By visiting /~Foo/friends.rdf, an RDF-file using the FOAF-Schema
is returned, associating the User with his Friends via the
foaf:knows property. foes.rdf delivers the User's Foes in the same
way and accessing /~Foo/foaf.rdf returns both Friends and Foes.

If there is interest in this, I'll add more features like:
- add a <link rel="meta" type="application/rdf+xml" title="FOAF" ... />
  to ~Foo/
- place a nice FOAF icon somewhere on the user's page
- let users specify their own FOAF file that can be included using
  rdfs:seeAlso
- add support for AIM, Jabber, Yahoo! IM IDs
- ...

I've registerd a patch at
http://sourceforge.net/tracker/index.php?func=detail&aid=902185&group_id=4421&atid=304421

It adds a Slash::XML::FOAF module and generates FOAF data when
content_type=foaf is passed to certain ops of zoo.pl or the
op is foaf. Additionally, various aliases are added in Slash::Apache::User
so that the FOAF data can be accessed from simple URL.

-- 
	Oliver M. Bolzer

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