jcs.org
jcs's openbsd hax
openbsd
1#!/bin/ksh
2#
3# $OpenBSD: diff.sh,v 1.6 2019/05/12 14:57:30 robert Exp $
4#
5# Copyright (c) 2017, 2019 Robert Nagy <robert@openbsd.org>
6#
7# Permission to use, copy, modify, and distribute this software for any
8# purpose with or without fee is hereby granted, provided that the above
9# copyright notice and this permission notice appear in all copies.
10#
11# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18
19umask 0022
20
21trap exit HUP INT TERM
22
23[[ "$1" != /* ]] || [[ "$2" != /* ]] &&
24 echo "paths have to be absolute" &&
25 exit 1
26
27plist=$(mktemp)
28trap 'rm -f ${plist}' EXIT
29
30padd() {
31 local _path=$1
32 readlink -f ${_path} >> ${plist}
33}
34
35diff -Parq $1 $2 2>&1 | grep ' differ$' |
36while IFS= read -r _d
37do
38 _o=$(echo $_d | cut -d ' ' -f2)
39 _n=$(echo $_d | cut -d ' ' -f4)
40 case "${_o##*.}"
41 in
42 a)
43 cmp -s ${_o} ${_n} 34 34 || padd ${_n}
44 ;;
45 1|3p)
46 # Needed for perl(1) because Pod::Man adds the build
47 # date in the man page; e.g. /usr/share/man1/pod2html.1:
48 # .TH POD2HTML 1 "2017-07-29" "perl v5.24.1"
49 _onm=$(mktemp)
50 _nnm=$(mktemp)
51 trap 'rm -f ${_onm} ${_nnm}' EXIT
52 sed -E '/([0-9]+-[0-9]+-[0-9]+|=+)/d' ${_o} > ${_onm}
53 sed -E '/([0-9]+-[0-9]+-[0-9]+|=+)/d' ${_n} > ${_nnm}
54 diff -q ${_onm} ${_nnm} >/dev/null || padd ${_n}
55 rm -f ${_onm} ${_nnm}
56 ;;
57 EFI|dat|db|tgz|*void|*dir|mk|cache-4)
58 ;;
59 *)
60 padd ${_n}
61 ;;
62 esac
63done
64
65sort -u ${plist}