feat: respect transparency

Author: eigenmannmartin

icalevents/icalparser.py

@@ -40,6 +40,7 @@ def __init__(self):
         self.start = None
         self.end = None
         self.all_day = True
+        self.transparent = False
         self.recurring = False
         self.location = None
         self.private = False
@@ -133,6 +134,7 @@ def copy_to(self, new_start=None, uid=None):
         ne.attendee = self.attendee
         ne.organizer = self.organizer
         ne.private = self.private
+        ne.transparent = self.transparent
         ne.uid = uid
         ne.created = self.created
         ne.last_modified = self.last_modified
@@ -201,6 +203,9 @@ def create_event(component, tz=UTC):
         event_class = component.get('class')
         event.private = event_class == 'PRIVATE' or event_class == 'CONFIDENTIAL'
 
+    if component.get('class'):
+        event.transparent = component.get('transp') == 'TRANSPARENT'
+
     if component.get('created'):
         event.created = normalize(component.get('created').dt, tz)
 

test/test_data/transparent.ics

@@ -0,0 +1,63 @@
+BEGIN:VCALENDAR
+METHOD:PUBLISH
+PRODID:Microsoft Exchange Server 2010
+VERSION:2.0
+X-WR-CALNAME:Kalender
+BEGIN:VTIMEZONE
+TZID:Central European Standard Time
+BEGIN:STANDARD
+DTSTART:16010101T030000
+TZOFFSETFROM:+0200
+TZOFFSETTO:+0100
+RRULE:FREQ=YEARLY;INTERVAL=1;BYDAY=-1SU;BYMONTH=10
+END:STANDARD
+BEGIN:DAYLIGHT
+DTSTART:16010101T020000
+TZOFFSETFROM:+0100
+TZOFFSETTO:+0200
+RRULE:FREQ=YEARLY;INTERVAL=1;BYDAY=-1SU;BYMONTH=3
+END:DAYLIGHT
+END:VTIMEZONE
+BEGIN:VEVENT
+UID:040000008200E00074C5B7101A82E008000000007BFBACB1614AD701000000000000000
+ 0100000004A699A72684F7646A814017A9F145FE8
+SUMMARY:Free
+DTSTART;VALUE=DATE:20210520
+DTEND;VALUE=DATE:20210521
+CLASS:PUBLIC
+PRIORITY:5
+DTSTAMP:20210516T144840Z
+TRANSP:TRANSPARENT
+STATUS:CONFIRMED
+SEQUENCE:0
+X-MICROSOFT-CDO-APPT-SEQUENCE:0
+X-MICROSOFT-CDO-BUSYSTATUS:FREE
+X-MICROSOFT-CDO-INTENDEDSTATUS:BUSY
+X-MICROSOFT-CDO-ALLDAYEVENT:TRUE
+X-MICROSOFT-CDO-IMPORTANCE:1
+X-MICROSOFT-CDO-INSTTYPE:1
+X-MICROSOFT-DONOTFORWARDMEETING:FALSE
+X-MICROSOFT-DISALLOW-COUNTER:FALSE
+END:VEVENT
+BEGIN:VEVENT
+UID:040000008200E00074C5B7101A82E00800000000F7B85AB6614AD701000000000000000
+ 01000000005576067F6247C45A572F9B9E56ABB32
+SUMMARY:Busy
+DTSTART;TZID=Central European Standard Time:20210521T070000
+DTEND;TZID=Central European Standard Time:20210521T223000
+CLASS:PUBLIC
+PRIORITY:5
+DTSTAMP:20210516T144840Z
+TRANSP:OPAQUE
+STATUS:CONFIRMED
+SEQUENCE:0
+X-MICROSOFT-CDO-APPT-SEQUENCE:0
+X-MICROSOFT-CDO-BUSYSTATUS:BUSY
+X-MICROSOFT-CDO-INTENDEDSTATUS:BUSY
+X-MICROSOFT-CDO-ALLDAYEVENT:FALSE
+X-MICROSOFT-CDO-IMPORTANCE:1
+X-MICROSOFT-CDO-INSTTYPE:0
+X-MICROSOFT-DONOTFORWARDMEETING:FALSE
+X-MICROSOFT-DISALLOW-COUNTER:FALSE
+END:VEVENT
+END:VCALENDAR

test/test_icalevents.py

@@ -334,4 +334,14 @@ def test_cest(self):
 
         evs = icalevents.events(file=ical, start=start, end=end)
 
-        self.assertEqual(len(evs), 115, "4 events in total")
+        self.assertEqual(len(evs), 115, "4 events in total")
+
+    def test_transparent(self):
+        ical = "test/test_data/transparent.ics"
+        start = date(2021, 1, 1)
+        end = date(2021, 12, 31)
+
+        [e1, e2] = icalevents.events(file=ical, start=start, end=end)
+
+        self.assertEqual(e1.transparent, True, "respect transparency")
+        self.assertEqual(e2.transparent, False, "respect opaqueness")