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#!/usr/bin/python

# dpkg-info - DebFile's implementation of "dpkg --info"
# 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.


""" (An approximation of) a 'dpkg --info' implementation relying on DebFile
class. """

from __future__ import print_function

import os
import stat
import sys

from debian import debfile

if __name__ == '__main__':
    if len(sys.argv) != 2:
        print("Usage: dpkg-info DEB")
        sys.exit(1)
    fname = sys.argv[1]

    deb = debfile.DebFile(fname)
    if deb.version == '2.0':
        print(' new debian package, version %s.' % deb.version)
    print(' size %d bytes: control archive= %d bytes.' % (
            os.stat(fname)[stat.ST_SIZE], deb['control.tar.gz'].size))
    for fname in deb.control:   # print info about control part contents
        content = deb.control[fname]
        if not content:
            continue
        lines = content.split('\n')
        ftype = ''
        try:
            if lines[0].startswith('#!'):
                ftype = lines[0].split()[0]
        except IndexError:
            pass
        print('  %d bytes, %d lines, %s, %s' % (len(content), len(lines),
                fname, ftype))
    for n, v in deb.debcontrol().items(): # print DEBIAN/control fields
        if n.lower() == 'description':  # increase indentation of long dsc
            lines = v.split('\n')
            short_dsc = lines[0]
            long_dsc = '\n'.join(map(lambda l: ' ' + l, lines[1:]))
            print(' %s: %s\n%s' % (n, short_dsc, long_dsc))
        else:
            print(' %s: %s' % (n, v))