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#!/usr/bin/python
# Given as input two live images, print out differences in their RPM content.
#
# Licensed under the new-BSD license (http://www.opensource.org/licenses/bsd-license.php)
# Copyright (C) 2010 Red Hat, Inc.
# Written by Colin Walters <walters@verbum.org>
import os
import sys
import tempfile
import subprocess
import getopt
def usage(ecode):
print "Usage: %s img1.iso img2.iso" % (sys.argv[0], )
print "Print differences between two live images"
sys.exit(ecode)
def main():
try:
opts,args = getopt.getopt(sys.argv[1:], 'h', ['help', 'debug'])
except getopt.GetoptError, e:
usage(1)
version = None
debug = False
for o,a in opts:
if o in ('-h', '--help'):
usage(0)
elif o in ('--debug', ):
debug = True
if len(args) != 2:
usage(1)
original = args[0]
new = args[1]
mount_temp = tempfile.mkdtemp()
(fd, original_rpmdata) = tempfile.mkstemp()
subprocess.check_call(['../livecd/tools/liveimage-mount', '--mount-hacks', '--chroot',
original, mount_temp, 'rpm', '-qa', '--queryformat="%{NAME} %{SIZE}\n'],
stdout=fd, stderr=sys.stderr)
os.close(fd)
(fd, new_rpmdata) = tempfile.mkstemp()
subprocess.check_call(['../livecd/tools/liveimage-mount', '--mount-hacks', '--chroot',
new, mount_temp, 'rpm', '-qa', '--queryformat="%{NAME} %{SIZE}\n'],
stdout=fd, stderr=sys.stderr)
os.close(fd)
os.rmdir(mount_temp)
original_rpms = {}
new_rpms = {}
def read_rpmdata(filename, data):
f = open(filename)
for line in f:
line = line.strip()
if not line: break
(rpm, size) = line.split(' ', 1)
data[rpm] = int(size)
f.close()
read_rpmdata(original_rpmdata, original_rpms)
read_rpmdata(new_rpmdata, new_rpms)
original_set = set(original_rpms)
new_set = set(new_rpms)
intersection = original_set.intersection(new_set)
intersection_deltas = {}
for rpm in intersection:
delta = new_rpms[rpm] - original_rpms[rpm]
if delta != 0:
intersection_deltas[rpm] = delta
added_set = new_set - original_set
removed_set = original_set - new_set
for rpm in sorted(added_set, lambda a,b: cmp(new_rpms[a], new_rpms[b])):
print '+ %s %d' % (rpm, new_rpms[rpm])
for rpm in sorted(removed_set, lambda a,b: cmp(original_rpms[a], original_rpms[b])):
print '- %s %d' % (rpm, original_rpms[rpm])
for rpm in sorted(intersection_deltas, lambda a,b: cmp(intersection_deltas[a], intersection_deltas[b])):
print '= %s %d' % (rpm, intersection_deltas[rpm])
sys.exit(0)
if __name__ == '__main__':
main()
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