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#!/usr/bin/python3

# grep-maintainer
# Copyright (C) 2007 Stefano Zacchiroli <zack@debian.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.

"""Dumb maintainer-based grep for the dpkg status file."""

import re
import sys
from debian import deb822

try:
    maint_RE = re.compile(sys.argv[1])
except IndexError:
    print("Usage: grep-maintainer REGEXP", file=sys.stderr)
    sys.exit(1)
except re.error as e:
    print("Error in the regexp: %s" % (e,), file=sys.stderr)
    sys.exit(1)

for pkg in deb822.Packages.iter_paragraphs(open('/var/lib/dpkg/status')):
    if 'Maintainer' in pkg and maint_RE.search(pkg['maintainer']):
        print(pkg['package'])