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#!/usr/bin/python2.7
## (the icalendar library is not ported to python3?)
import argparse
import urlparse
import pytz
from datetime import datetime, timedelta
import dateutil.parser
from icalendar import Calendar,Event
from caldavclientlibrary.client.account import CalDAVAccount
from caldavclientlibrary.protocol.url import URL
import uuid
import json
import os
import logging
import sys
__version__ = "0.06"
__author__ = "Tobias Brox"
__author_short__ = "tobixen"
__copyright__ = "Copyright 2013, Tobias Brox"
#__credits__ = []
__license__ = "GPL"
__maintainer__ = "Tobias Brox"
__email__ = "t-calendar-cli@tobixen.no"
__status__ = "Development"
__product__ = "calendar-cli"
def niy(*args, **kwargs):
if 'feature' in kwargs:
raise NotImplementedError("This feature is not implemented yet: %(feature)s" % kwargs)
raise NotImplementedError
def caldav_connect(args):
# Create the account
splits = urlparse.urlsplit(args.caldav_url)
ssl = (splits.scheme == "https")
return CalDAVAccount(splits.netloc, ssl=ssl, user=args.caldav_user, pswd=args.caldav_pass, root=(splits.path or '/'), principal=None, logging=args.debug_logging)
def find_calendar_url(caldav_conn, args):
if args.calendar_url:
splits = urlparse.urlsplit(args.calendar_url)
if splits.path.startswith('/') or splits.scheme:
## assume fully qualified URL or absolute path
url = args.calendar_url
else:
## assume relative path
url = args.caldav_url + args.calendar_url
else:
## Find default calendar
url = caldav_conn.getPrincipal().listCalendars()[0].path
## Unique file name
if not url.endswith('/'):
url += '/'
return url
def _calendar_addics(caldav_conn, ics, uid, args):
""""
"Internal" method for adding a calendar object item to the caldav
server through a PUT. ASSUMES the ics conforms to rfc4791.txt
section 4.1 Handles --calendar-url and --icalendar from the args
"""
if args.icalendar and args.nocaldav:
print(ics)
return
if args.icalendar or args.nocaldav:
raise ValueError("Nothing to do/invalid option combination for 'calendar add'-mode; either both --icalendar and --nocaldav should be set, or none of them")
return
url = URL(find_calendar_url(caldav_conn, args) + str(uid) + '.ics')
caldav_conn.session.writeData(url, ics, 'text/calendar', method='PUT')
def calendar_addics(caldav_conn, args):
"""
Takes an ics from external source and puts it into the calendar.
From the CalDAV RFC:
Calendar components in a calendar collection that have different UID
property values MUST be stored in separate calendar object resources.
This means the inbound .ics has to be split up into one .ics for
each event as long as the uid is different.
"""
if args.file == '-':
input_ical = sys.stdin.read()
else:
with open(args.file, 'r') as f:
input_ical = f.read()
c = Calendar.from_ical(input_ical)
## unfortunately we need to mess around with the object internals,
## since the icalendar library doesn't offer methods out of the
## hat for doing such kind of things
entries = c.subcomponents
## Timezones should be duplicated into each ics, ref the RFC
timezones = [x for x in entries if x.name == 'VTIMEZONE']
## Make a mapping from UID to the other components
uids = {}
for x in entries:
if x.name == 'VTIMEZONE' or not 'UID' in x:
continue
uid = x['UID'].to_ical()
uids[uid] = uids.get(uid, []) + [x]
for uid in uids:
c.subcomponents = timezones + uids[uid]
_calendar_addics(caldav_conn, c.to_ical(), uid, args)
def calendar_add(caldav_conn, args):
cal = Calendar()
cal.add('prodid', '-//{author_short}//{product}//{language}'.format(author_short=__author_short__, product=__product__, language=args.language))
cal.add('version', '2.0')
if args.timezone:
tz = pytz.timezone(args.timezone)
event = Event()
## read timestamps from arguments
dtstart = dateutil.parser.parse(args.event_time)
event.add('dtstart', dtstart)
## TODO: handle duration and end-time as options. default 3600s by now.
event.add('dtend', dtstart + timedelta(0,3600))
## not really correct, and it breaks i.e. with google calendar
#event.add('dtstamp', datetime.now())
## maybe we should generate some uid?
uid = uuid.uuid1()
event.add('uid', str(uid))
event.add('summary', ' '.join(args.description))
cal.add_component(event)
_calendar_addics(caldav_conn, cal.to_ical(), uid, args)
def main():
## This boilerplate pattern is from
## http://stackoverflow.com/questions/3609852
## We want defaults for the command line options to be fetched from the config file
# Parse any conf_file specification
# We make this parser with add_help=False so that
# it doesn't parse -h and print help.
conf_parser = argparse.ArgumentParser(
description=__doc__, # printed with -h/--help
# Don't mess with format of description
formatter_class=argparse.RawDescriptionHelpFormatter,
# Turn off help, so we print all options in response to -h
add_help=False
)
conf_parser.add_argument("--config-file",
help="Specify config file", metavar="FILE", default=os.getenv('XDG_CONFIG_HOME', os.getenv('HOME', '~') + '/.config')+'/calendar.conf')
conf_parser.add_argument("--config-section",
help="Specify config section; allows several caldav servers to be configured in the same config file", default='default')
args, remaining_argv = conf_parser.parse_known_args()
config = {}
try:
with open(args.config_file) as config_file:
config = json.load(config_file)
except IOError:
## File not found
logging.info("no config file found")
except ValueError:
logging.error("error in config file", exc_info=True)
raise
defaults = config.get(args.config_section, {})
# Parse rest of arguments
# Don't suppress add_help here so it will handle -h
parser = argparse.ArgumentParser(
# Inherit options from config_parser
parents=[conf_parser]
)
parser.set_defaults(**defaults)
## Global options
parser.add_argument("--nocaldav", help="Do not connect to CalDAV server, but read/write icalendar format from stdin/stdout", action="store_true")
parser.add_argument("--icalendar", help="Read/write icalendar format from stdin/stdout", action="store_true")
parser.add_argument("--timezone", help="Timezone to use")
parser.add_argument('--language', help="language used", default="EN")
parser.add_argument("--caldav-url", help="Full URL to the caldav server", metavar="URL")
parser.add_argument("--caldav-user", help="username to log into the caldav server", metavar="USER")
parser.add_argument("--caldav-pass", help="password to log into the caldav server", metavar="PASS")
parser.add_argument("--debug-logging", help="turn on debug logging", action="store_true")
## TODO: check sys.argv[0] to find command
## TODO: set up logging
subparsers = parser.add_subparsers(title='command')
calendar_parser = subparsers.add_parser('calendar')
calendar_parser.add_argument("--calendar-url", help="URL for calendar to be used (may be absolute or relative to caldav URL)")
calendar_subparsers = calendar_parser.add_subparsers(title='subcommand')
calendar_add_parser = calendar_subparsers.add_parser('add')
calendar_add_parser.add_argument('event_time', help="Timestamp and duration of the event. See the documentation for event_time specifications")
calendar_add_parser.add_argument('description', nargs='+')
calendar_add_parser.set_defaults(func=calendar_add)
calendar_addics_parser = calendar_subparsers.add_parser('addics')
calendar_addics_parser.add_argument('--file', help="ICS file to upload", default='-')
calendar_addics_parser.set_defaults(func=calendar_addics)
calendar_agenda_parser = calendar_subparsers.add_parser('agenda')
calendar_agenda_parser.set_defaults(func=niy)
todo_parser = subparsers.add_parser('todo')
todo_parser.set_defaults(func=niy)
args = parser.parse_args(remaining_argv)
if not args.nocaldav:
caldav_conn = caldav_connect(args)
ret = args.func(caldav_conn, args)
if __name__ == '__main__':
main()
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