CC0: A simple script that is used to load up the mailcap file and look up and call the appropriate program, for use when a filetype (especially pdf) is incorrectly given an application/octet-stream type

mutt_octet_lookup.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# To the extent possible under law, Taylor C. Richberger has waived all
# copyright and related or neighboring rights to mutt_octet_lookup. This work
# is published from: United States. 

import argparse
import locale
import mailcap
import mimetypes
import os
import shlex


def main():
    locale.setlocale(locale.LC_ALL, '')
    parser = argparse.ArgumentParser(description='Pull in an octet-stream argument and try to run the actual mailcap on it based on extension')
    parser.add_argument('-V', '--version', action='version', version='0.1')
    parser.add_argument('file', help='The file to process')
    args = parser.parse_args()

    mimetypes.init()

    type = mimetypes.guess_type(args.file)[0]

    caps = mailcap.getcaps()
    view = mailcap.findmatch(caps, type, filename=args.file)[0]
    command = shlex.split(view)

    os.execvp(command[0], command)

if __name__ == '__main__':
    main()