#!/usr/bin/python

__author__ = "Mark Pilgrim (mark@diveintomark.org)"
__copyright__ = "Copyright 2002, Mark Pilgrim"
__license__ = "GPL"
__version__ = "1.0"
__cvsversion__ = "$Revision: 1.1 $"[11:-2]
__date__ = "$Date: 2002/11/17 02:52:38 $"[7:-2]

from rdflib.TripleStore import TripleStore # http://rdflib.net/
from rdflib import URIRef
from rdf.sir import Namespace

FOAFFILE = 'http://diveintomark.org/public/foaf.rdf'
ID = 'mark'

store = None
foaf = Namespace('http://xmlns.com/foaf/0.1/')
dc = Namespace('http://purl.org/dc/elements/1.1/')
title = dc['title']
description = dc['description']

def load():
    global store
    store = TripleStore()
    store.load(FOAFFILE)

def mget(subject, predicate):
    return [s for s in store.objects(subject, predicate)]

def get(subject, predicate):
    data = [s for s in store.objects(subject, predicate)]
    if data: return data[0]
    else: return None

def link(subject, includeDescription=1):
    linkvalue = get(subject, title)
    if includeDescription:
        linkdescription = get(subject, description)
    else:
        linkdescription = None
    return """<a href="%s">%s</a>%s""" % (subject, linkvalue, linkdescription and (", %s" % linkdescription) or "")

def main():
    load()
    my = Namespace(FOAFFILE + "#" + ID)
    print "<p>My name is %s," % get(my, foaf['name']),
    print "and this is %s." % link(get(my, foaf['homepage'])),
    print "Here I write about whatever happens to interest me.  At the moment, this includes things like ",
    print ", ".join(map(link, mget(my, foaf['interest'])[:-1])) + ", and %s.</p>" % link(mget(my, foaf['interest'])[-1])
    print "<p>I work for %s." % link(get(my, foaf['workplaceHomepage'])),
    print "Nothing on %s" % link(get(my, foaf['homepage']), 0),
    print "is affiliated with, sponsored by, or endorsed by %s.</p>" % (link(get(my, foaf['workplaceHomepage']), 0))
    print "<p>You can also find my digital footprints elsewhere:</p>"
    print "<ul>"
    for p in mget(my, foaf['currentProject']) + mget(my, foaf['pastProject']):
        print "<li>%s</li>" % link(p)
    print "</ul>"
    email = get(my, foaf['mbox'])
    print """<p>You may contact me at <a href="%s">%s</a>.</p>""" % (email, email.split(':', 1)[1])
    img = get(my, foaf['depiction'])
    imgalt = get(img, description)
    imgtitle = get(img, title)
    print """<p><img src="%s" alt="%s" title="%s" /></p>""" % (img, imgalt, imgtitle)
    
if __name__ == '__main__':
    main()