#!/bin/sh
"""": # -*-python-*-
bup_python="$(dirname "$0")/../cmd/bup-python" || exit $?
exec "$bup_python" "$0" ${1+"$@"}
"""
# end of bup preamble

# Note: this currently relies on bup-python to handle arbitrary binary
# user/group names.

from __future__ import absolute_import, print_function

import grp
import pwd
import sys

def usage():
    print('Usage: id-other-than <--user|--group> ID [ID ...]',
          file=sys.stderr)

if len(sys.argv) < 2:
    usage()
    sys.exit(1)

def is_integer(x):
    try:
        int(x)
        return True
    except ValueError as e:
        return False

excluded_ids = set(int(x) for x in sys.argv[2:] if is_integer(x))
excluded_names = (x for x in sys.argv[2:] if not is_integer(x))

if sys.argv[1] == '--user':
    for x in excluded_names:
        excluded_ids.add(pwd.getpwnam(x).pw_uid)
    for x in pwd.getpwall():
        if x.pw_uid not in excluded_ids:
            print(x.pw_name + ':' + str(x.pw_uid))
            sys.exit(0)
elif sys.argv[1] == '--group':
    for x in excluded_names:
        excluded_ids.add(grp.getgrnam(x).gr_gid)
    for x in grp.getgrall():
        if x.gr_gid not in excluded_ids:
            print(x.gr_name + ':' + str(x.gr_gid))
            sys.exit(0)
else:
    usage()
    sys.exit(1)