summaryrefslogtreecommitdiff
path: root/src/repo-diff
blob: c875dce6616a1634451933ebf189a9c92ac42916 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
#!/usr/bin/env bash
# Shows a diff between repo databases

# Copyright (C) 2013 Nicolás Reynolds <fauno@parabola.nu>
#
# License: GNU GPLv3+
#
# 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.
#
# 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

. "$(librelib messages)"

usage() {
	print "Usage: %s arch/core/i686 parabola/core/i686" "${0##*/}"
	print "Compares two repo databases using distro/repo/architecture format."
	echo
	print 'Shortcuts:'
	flag 'arch'     'expands to Arch Linux repo url'
	flag 'parabola' 'expands to Parabola GNU/Linux-libre repo url'
}

if test $# -eq 0; then
	usage
	exit 0
fi

b() { bsdtar ztf $1 | cut -d "/" -f1 | sort -u ; }
n() { echo "$1".db | tr "/" "-"; }

# hopefully simple way to convert
# parabola/libre/i686
# to
# http://repo.parabola.nu/libre/os/i686/libre.db
# add more distros here
g() {
	echo "$1" | sed -e "s,^\([^/]\+\)/\([^/]\+\)/\([^/]\+\)$,\1/\2/os/\3/\2.db," \
	                -e "s,^parabola/,http://repo.parabola.nu/," \
	                -e "s,^arch\(linux\)\?/,http://mirrors.kernel.org/archlinux/,"
}

mkdir ${0##*/}.$$
pushd ${0##*/}.$$ >/dev/null

d=""
for i in $1 $2; do
	n=$(n "$i")

	test -z "$n" && exit 1

	wget -O "$n" -nv $(g "$i")
	b "$n" >${n}.orig

	d+=" ${n}.orig"
done

{
	printf "$(gettext "Difference between %s and %s")\n---\n" $1 $2
	which diffstat &>/dev/null && diff -auN "${d[@]}" | diffstat
	diff -auN "${d[@]}"
} >../${n}.diff

popd >/dev/null
rm -r ${0##*/}.$$

print "Difference save on %s" "${n}.diff"