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#!/usr/bin/env python3
"""Parse a vcard file given via stdin and output some details.
Currently the following details are displayed if present:
- start date and time
- the summary information of the event
- a list of attendees
- the description of the event
Please note: if multiple events are included in the data then only the
first one will be parsed and displayed!
REQUIREMENTS:
- Python 3
- Python 3 - vobject library
To use as a filter in aerc, add the following line to your aerc.config:
text/calendar=show-ics-details.py
"""
import re
import sys
import vobject
def remove_mailto(message: str) -> str:
"""Remove a possible existing 'mailto:' from the given message.
Keyword arguments:
message -- A message string.
"""
return re.sub(r'^mailto:', '', message, flags=re.IGNORECASE)
def extract_field(cal: vobject.icalendar.VCalendar2_0, name: str) -> str:
"""Extract the desired field from the given calendar object.
Keyword arguments:
cal -- A VCalendar 2.0 object.
name -- The field name.
"""
try:
name = name.strip()
if name == 'attendees':
attendees = []
for attendee in cal.vevent.attendee_list:
attendees.append(remove_mailto(attendee.valueRepr()).strip())
return ', '.join(attendees)
elif name == 'description':
return cal.vevent.description.valueRepr().strip()
elif name == 'dtstart':
return str(cal.vevent.dtstart.valueRepr()).strip()
elif name == 'organizer':
return remove_mailto(cal.vevent.organizer.valueRepr()).strip()
elif name == 'summary':
return cal.vevent.summary.valueRepr().strip()
else:
return ''
except AttributeError:
return ''
attendees = ''
description = ''
dtstart = ''
error = ''
organizer = ''
summary = ''
try:
cal = vobject.readOne(sys.stdin)
attendees = extract_field(cal, 'attendees')
description = extract_field(cal, 'description')
dtstart = extract_field(cal, 'dtstart')
organizer = extract_field(cal, 'organizer')
summary = extract_field(cal, 'summary')
except vobject.base.ParseError:
error = '**Sorry, but we could not parse the calendar!**'
if error:
print(error)
print("")
print(f"Date/Time : {dtstart}")
print(f"Summary : {summary}")
print(f"Organizer : {organizer}")
print(f"Attendees : {attendees}")
print("")
print(description)
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