1 """ calitems.py -- convert RDF calendar to danger JSON

        2 

        3 Usage::

        4 

        5   $ export PYTHONPATH=~/src/swap

        6   $ python calitems.py mycal.rdf > mycal.json

        7   $ python calitems.py --test

        8 

        9 See also doctests for `eachEvent`.

       10 

       11 """

       12 

       13 import simplejson

       14 

       15 from swap import uripath  # http://www.w3.org/2000/10/swap/

       16 from swap.myStore import Namespace, load

       17 

       18 import hipsrv # hmm... move asHiptopDate here?

       19 

       20 def eachEvent(kb, float_tz='America/Chicago'):

       21     """iterate over events in RDF kb, returning danger-style JSON

       22 

       23     @param float_tz: local timezone of the device at the

       24       time of insert/post... at least... I think... it

       25       sure seems wierd.

       26 

       27     supports timed events only

       28     summary, dtstart required

       29     loc, description optional

       30 

       31     >>> kb = _s2f(TestLocal, "http://example/cal1")

       32     >>> e = eachEvent(kb).next()

       33     >>> sorted(e.keys())

       34     ['end_date', 'event_type', 'location', 'notes', 'repeat_type', 'start_date', 'timezone', 'title']

       35     >>> e['notes']

       36     u'Aug. 25 (Saturday) 318 08:00 1215 Yellow Dragons v 1216 BVSC Dragons Community Park West'

       37     >>> e['start_date']

       38     '20070825T130000Z'

       39 

       40     >>> kb = _s2f(TestUTC, "http://example/cal2")

       41     >>> e = eachEvent(kb).next()

       42     >>> sorted(e.keys())

       43     ['end_date', 'event_type', 'notes', 'repeat_type', 'start_date', 'timezone', 'title']

       44     >>> e['notes']

       45     u'2007-09-15 lv PHL 20:40 ar GLA 08:35 SUNDAY US AIRWAYS #768'

       46     >>> e['start_date']

       47     u'20070916T004000Z'

       48     >>> e['timezone']

       49     'America/Chicago'

       50 

       51     """

       52 

       53     # @# these should be module constants, but myStore global

       54     # wierdness seems to interfere.

       55     RDF = Namespace("http://www.w3.org/1999/02/22-rdf-syntax-ns#")

       56     ICAL = Namespace('http://www.w3.org/2002/12/cal/icaltzd#')

       57 

       58     for ev in kb.each(pred = RDF.type, obj = ICAL.Vevent):

       59         titl = unicode(kb.the(subj = ev, pred = ICAL.summary) or '').strip()

       60 

       61         tz = float_tz

       62         dtstart = unicode(kb.the(subj = ev, pred = ICAL.dtstart))

       63         dtend = unicode(kb.the(subj = ev, pred = ICAL.dtend) or '')

       64         

       65         loc = unicode(kb.any(subj = ev, pred = ICAL.location) or '')

       66 

       67         desc = unicode(kb.any(subj = ev, pred = ICAL.description) or '')

       68         desc = ' '.join(desc.split()) # a la xslt normalize-space

       69 

       70 	ety = 1 # timed (not all day), end time (not dur)

       71 

       72 	if not "T" in dtstart: # all-day event

       73 	    ety = 2

       74             tz = None

       75 	    dtstart = "%sT000000Z" % (dtstart.replace("-", ""))

       76 	    if dtend:

       77 		dtend = "%sT000000Z" % (dtend.replace("-", ""))

       78 	elif dtstart.endswith("Z"):

       79             dtstart=dtstart.replace("-", "").replace(":", "")

       80             if dtend:

       81                 dtend=dtend.replace("-", "").replace(":", "")

       82             else:

       83                 dtend=dtstart # hmm... plus 1 hour?

       84         else:

       85 	    dtstart = hipsrv.asHiptopDate(dtstart, tz)

       86             if dtend:

       87                 dtend = hipsrv.asHiptopDate(dtend, tz)

       88             else:

       89                 dtend=dtstart # hmm... plus 1 hour?

       90 

       91 	rec = {

       92             'title': titl,

       93             'start_date': dtstart,

       94             'end_date': dtend,

       95             'notes': desc,

       96             'repeat_type': 0,

       97             'event_type': ety,

       98             }

       99         if tz: rec['timezone'] = tz

      100 	if loc: rec['location'] = loc

      101 

      102         yield rec

      103 

      104 def fn2kb(fn):

      105     import os

      106     addr = uripath.join("file:" + os.getcwd() + "/", fn)

      107     return load(addr)

      108     

      109 def main(argv):

      110     kb = fn2kb(argv[1])

      111     print "@@", kb.size()

      112     print "["

      113     first = True

      114     for e in eachEvent(kb):

      115         if first:

      116             first = False

      117         else:

      118             print ", ",

      119         print simplejson.dumps(e)

      120     print "]"

      121 

      122 

      123 

      124 def _s2f(s, base):

      125     """make a formula from a string.

      126 

      127     Cribbed from llyn.BI_parsedAsN3

      128     should be part of the myStore API, no? yes. TODO

      129 

      130     >>> _s2f("<#sky> <#color> <#blue>.", "http://example/socrates")

      131     {sky color blue}

      132 

      133     ^ that test output depends on the way formulas print themselves.

      134     """

      135     # """ emacs python mode needs help

      136 

      137     from swap.notation3 import SinkParser

      138     from swap.myStore import formula

      139     

      140     graph = formula()

      141     p = SinkParser(graph.store, openFormula=graph, baseURI=base,

      142                    thisDoc="data:@@some-formula-string")

      143     p.startDoc()

      144     p.feed(s)

      145     f = p.endDoc()

      146     f.close()

      147     return f

      148 

      149 

      150 TestLocal = """

      151      @prefix : <http://www.w3.org/2002/12/cal/icaltzd#> .

      152     

      153     <>     a :Vcalendar;

      154          :component  [

      155              a :Vevent;

      156              :description "Aug. 25 (Saturday) 318 08:00 1215 Yellow Dragons v 1216 BVSC Dragons Community Park West";

      157              :dtstart "2007-08-25T08:00:00"^^:dateTime;

      158              :location "Community Park West";

      159              :summary "Soccer Game 1215 Yellow Dragons v 1216 BVSC Dragons";

      160              :url <> ].

      161 

      162 """

      163 

      164 

      165 TestUTC = """

      166     @prefix : <http://www.w3.org/2006/vcard/ns#> .

      167     @prefix SUMO: <http://www.ontologyportal.org/translations/SUMO.owl.txt#> .

      168     @prefix XML: <http://www.w3.org/2001/XMLSchema#> .

      169     @prefix c: <http://www.w3.org/2002/12/cal/icaltzd#> .

      170     @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .

      171     @prefix sou: <http://www.w3.org//2007/07dc-lhr/sou19#> .

      172 

      173     sou:ee139866156     a c:Vevent;

      174          SUMO:destination <,2sou19.rdf#GLA>;

      175          SUMO:origin <,2sou19.rdf#PHL>;

      176          c:description "2007-09-15 lv PHL 20:40 ar GLA 08:35 SUNDAY US AIRWAYS #768";

      177          c:dtend "2007-09-16T07:35:00Z"^^XML:dateTime;

      178          c:dtstart "2007-09-16T00:40:00Z"^^XML:dateTime;

      179          c:summary "US AIRWAYS #768";

      180          c:url <https://bwi.flightview.com/fvSabreVT/fvCPL.exe?vthost=1W&acid=76

      181 8&qtype=htm&AL=US&Find1=Track+Flight> .

      182 """

      183 

      184 

      185 def _test():

      186     import doctest

      187     doctest.testmod()

      188 

      189 if __name__ == "__main__":

      190     import sys

      191 

      192     if '--test' in sys.argv:

      193         _test()

      194     else:

      195         main(sys.argv)