1#!/bin/sh 2# 3# $OpenBSD: diff3.ksh,v 1.6 2019/09/28 17:30:07 ajacoutot Exp $ 4# 5# Copyright (c) 2003 Todd C. Miller <millert@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# 19# Sponsored in part by the Defense Advanced Research Projects 20# Agency (DARPA) and Air Force Research Laboratory, Air Force 21# Materiel Command, USAF, under agreement number F39502-99-1-0512. 22# 23 24OPTIND=1 # force getopts to reset itself 25 26export PATH=/usr/bin:/bin:/usr/sbin:/sbin 27diff3prog=/usr/libexec/diff3prog 28USAGE="usage: diff3 [-3aEeXx] file1 file2 file3" 29 30# Pull out any command line flags (some for diff, some for diff3) 31dflags= 32d3flags= 33while getopts "aeExX3" c; do 34 case "$c" in 35 a) 36 dflags="$dflags -$c" 37 ;; 38 e|E|x|X|3) 39 d3flags="-$c" 40 ;; 41 *) 42 echo "$USAGE" 1>&2 43 exit 1 44 ;; 45 esac 46done 47shift $(( $OPTIND - 1 )) 48 49if [ $# -lt 3 ]; then 50 echo "$USAGE" 1>&2 51 exit 1 52fi 53 54TMP1=`mktemp -t d3a.XXXXXXXXXX` || exit 1 55TMP2=`mktemp -t d3b.XXXXXXXXXX` 56if [ $? -ne 0 ]; then 57 rm -f $TMP1 58 exit 1 59fi 60trap "/bin/rm -f $TMP1 $TMP2" 0 1 2 13 15 61diff $dflags -- $1 $3 > $TMP1 62diff $dflags -- $2 $3 > $TMP2 63$diff3prog $d3flags -- $TMP1 $TMP2 $1 $2 $3 64exit $? 65