def from_ical(ical, timezone=None):
""" Parses the data format from ical text format.
"""
# TODO: ical string should better contain also the TZID property.deleter(
if timezone:
timezone = timezone_from_string(timezone)
try:
timetuple = map(int, ((
ical[:4], # year
ical[4:6], # month
ical[6:8], # day
ical[9:11], # hour
ical[11:13], # minute
ical[13:15], # second
)))
if timezone:
return datetime(tzinfo=timezone, *timetuple)
elif not ical[15:]:
return datetime(*timetuple)
elif ical[15:16] == 'Z':
timetuple += [0, UTC]
return datetime(*timetuple)
else:
raise ValueError, ical
except:
raise ValueError, 'Wrong datetime format: %s' % ical
def add(self, name, value, encode=1):
"If property exists append, else create and set it"
if name in self:
oldval = self[name]
value = self._encode(name, value, encode)
if type(oldval) == ListType:
oldval.append(value)
else:
self.set(name, [oldval, value], encode=0)
else:
self.set(name, value, encode)
if getattr(value, 'tzinfo', False):
timezone = timezone_from_string(value.tzinfo)
self[name].params.update({'TZID': str(timezone)})