~andrewsomething/ubuntu-dev-tools/665202

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#!/usr/bin/python
# -*- coding: utf-8 -*-
#
# submittodebian - tool to submit patches to Debian's BTS
# Copyright (C) 2007, 2009 Canonical Ltd.
# Author: Soren Hansen <soren@ubuntu.com>,
#         Steve Langasek <slangasek@canonical.com>
#
# ##################################################################
#
# 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 2
# of the License, or (at your option) any later version.
# 
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
# 
# See file /usr/share/common-licenses/GPL for more details.
#
# ##################################################################

import re, os, sys
from tempfile import mkstemp

try:
	from debian.changelog import Changelog
except ImportError:
	print 'This utility requires modules from the «python-debian» package, which isn\'t currently installed.'
	sys.exit(1)

if not os.path.exists('/usr/bin/reportbug'):
	print 'This utility requires the «reportbug» package, which isn\'t currently installed.'
	sys.exit(1)

def get_most_recent_debian_version(changelog):
	for v in changelog.get_versions():
		if not re.search('(ubuntu|build)', v.full_version):
			return v.full_version

def get_bug_body(changelog):
	return '''In Ubuntu, we've applied the attached patch to achieve the following:
%s
We thought you might be interested in doing the same. 
''' % ("\n".join([a for a in changelog._blocks[0].changes()]))

def gen_debdiff(changelog):
	pkg = changelog.package

	oldver = changelog._blocks[1].version
	newver = changelog._blocks[0].version

	(fd, debdiff) = mkstemp()
	os.close(fd)

	if os.system('bzr diff -r tag:%s > /dev/null 2>&1' % oldver) == 256:
		print "Extracting bzr diff between %s and %s" % (oldver, newver)
		cmd = 'bzr diff -r tag:%s | filterdiff -x "*changelog*" > %s' % (oldver, debdiff)
		run_cmd(cmd)
	else:
		if oldver.epoch is not None:
			oldver = str(oldver)[str(oldver).index(":")+1:]
		if newver.epoch is not None:
			newver = str(newver)[str(newver).index(":")+1:]

		olddsc = '../%s_%s.dsc' % (pkg, oldver)
		newdsc = '../%s_%s.dsc' % (pkg, newver)

		check_file(olddsc)
		check_file(newdsc)

		print "Generating debdiff between %s and %s" % (oldver, newver)
		cmd = 'debdiff %s %s | filterdiff -x "*changelog*" > %s' % (olddsc, newdsc, debdiff)
		run_cmd(cmd)

	return debdiff

def check_file(fname, critical = True):
	if os.path.exists(fname):
		return fname
	else:
		if not critical: return False
		print "Couldn't find «%s».\n" % fname
		sys.exit(1)

def edit_debdiff(debdiff):
	cmd = 'sensible-editor %s' % (debdiff)
	run_cmd(cmd)

def submit_bugreport(body, debdiff, changelog):
	cmd = 'reportbug -P "User: ubuntu-devel@lists.ubuntu.com" -P "Usertags: origin-ubuntu natty ubuntu-patch" -T patch -A %s -B debian -i %s -V %s %s' % (debdiff, body, deb_version, changelog.package)
	run_cmd(cmd)

def run_cmd(cmd):
	if os.getenv('DEBUG'):
		print "%s\n" % cmd
	os.system(cmd)

changelog_file = check_file('debian/changelog', critical = False) or check_file('../debian/changelog')
changelog = Changelog(file(changelog_file).read())

deb_version = get_most_recent_debian_version(changelog)
bug_body = get_bug_body(changelog)

fd, body = mkstemp()
fp = os.fdopen(fd, 'w')
fp.write(bug_body)
fp.close()

debdiff = gen_debdiff(changelog)
edit_debdiff(debdiff)
submit_bugreport(body, debdiff, changelog)
os.unlink(body)
os.unlink(debdiff)