--- /dev/null
+#!/usr/bin/python3
+
+import sys
+import os
+from icalendar import Calendar, Event
+from textwrap import fill, indent
+
+FIELDS = ('summary','location','organiser',
+ 'flags','uid','rrule')
+COLSEP = ': '
+
+COLUMNS = int(os.getenv('COLUMNS', 80))-10
+WIDTH = max(len(i) for i in FIELDS)
+INDENT = WIDTH + len(COLSEP)
+
+def dtstrs(event):
+ start, end = event.get('dtstart').dt, event.get('dtend')
+ if not end:
+ duration = event.get('duration').dt
+ end = start + duration
+ else:
+ end = end.dt
+
+ def strftime(dt, strf):
+ return dt.astimezone().strftime(strf)
+
+ ret = []
+ if start.tzinfo == end.tzinfo:
+ ret.append(strftime(start, '%F %R'))
+
+ else:
+ ret.append(strftime(start, '%F %R %Z'))
+
+ if start.date() == end.date():
+ ret.append(strftime(end, '%T %Z'))
+
+ else:
+ ret.append(strftime(end, '%F %R %Z'))
+
+ return ret
+
+def parse_ics_file(fp):
+ cal = Calendar.from_ical(fp.read())
+
+ for event in cal.walk():
+ if event.name != "VEVENT": continue
+ print('{} → {}'.format(*dtstrs(event)))
+ flags = []
+ for k in ('status', 'class', 'transp', 'priority'):
+ t = event.get(k)
+ if t: flags.append((k, t))
+ event['flags'] = ' '.join('{}:{}'.format(*f) for f in flags)
+ for label in FIELDS:
+ if label in event:
+ text = fill(str(event[label]), width=COLUMNS-INDENT,
+ initial_indent='', subsequent_indent=' '*INDENT)
+ print(f'{label.capitalize():>{WIDTH}s}{COLSEP}{text}')
+
+ if 'description' in event:
+ output = ['']
+ lines = event['description'].split('\n')
+ for line in lines:
+ output.append(fill(line, width=COLUMNS, initial_indent=' ',
+ subsequent_indent=' '))
+ print('\n'.join(output))
+
+if __name__ == '__main__':
+
+ if len(sys.argv) > 1 and sys.argv[1] != '-':
+ for f in sys.argv[1:]:
+ with open(f) as fp:
+ parse_ics_file(fp)
+ else:
+ parse_ics_file(sys.stdin)