Simple filter script for *.ics files

vfilter.py

#!/usr/bin/python3
# -*- coding: utf-8 -*-

# This is a simple Python script, which allows you to filter events in a *.ics
# by a string in the summary.
#
# Use the Unix pipe > to write the output to a file.

#
# MIT License
#
# Copyright (c) 2019 by Mebus, https://github.com/Mebus/
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.

import argparse
import os

parser = argparse.ArgumentParser(
    description="A simple filter script for *.ics files by Mebus, https://github.com/Mebus/"
)
parser.add_argument("inputfile")
parser.add_argument("filterstring")
args = parser.parse_args()

if os.path.exists(args.inputfile):

    f = open(args.inputfile, "r")

    vcard = False
    vcard_cont = ""

    for x in f:

        if args.filterstring in x and "SUMMARY" in x:
            append = False

        if "BEGIN:VEVENT" in x:
            append = True
            vcard = True

        if vcard:
            vcard_cont += x

        if not vcard:
            print(x, end="")

        if "END:VEVENT" in x:
            vcard = False

            if append:
                print(vcard_cont, end="")

            vcard_cont = ""
else:
    print("The file " + args.inputfile + " does not exist!")