66 lines
1.8 KiB
Bash
66 lines
1.8 KiB
Bash
#!/bin/ksh -
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#
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# $OpenBSD: diff3.ksh,v 1.6 2019/09/28 17:30:07 ajacoutot Exp $
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#
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# Copyright (c) 2003 Todd C. Miller <millert@openbsd.org>
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#
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# Permission to use, copy, modify, and distribute this software for any
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# purpose with or without fee is hereby granted, provided that the above
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# copyright notice and this permission notice appear in all copies.
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#
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# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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#
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# Sponsored in part by the Defense Advanced Research Projects
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# Agency (DARPA) and Air Force Research Laboratory, Air Force
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# Materiel Command, USAF, under agreement number F39502-99-1-0512.
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#
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set -o posix # set POSIX mode to prevent +foo in getopts
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OPTIND=1 # force getopts to reset itself
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export PATH=/usr/bin:/bin:/usr/sbin:/sbin
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diff3prog=/usr/libexec/diff3prog
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USAGE="usage: diff3 [-3aEeXx] file1 file2 file3"
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# Pull out any command line flags (some for diff, some for diff3)
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dflags=
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d3flags=
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while getopts "aeExX3" c; do
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case "$c" in
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a)
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dflags="$dflags -$c"
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;;
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e|E|x|X|3)
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d3flags="-$c"
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;;
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*)
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echo "$USAGE" 1>&2
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exit 1
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;;
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esac
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done
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shift $(( $OPTIND - 1 ))
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if [ $# -lt 3 ]; then
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echo "$USAGE" 1>&2
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exit 1
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fi
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TMP1=`mktemp -t d3a.XXXXXXXXXX` || exit 1
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TMP2=`mktemp -t d3b.XXXXXXXXXX`
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if [ $? -ne 0 ]; then
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rm -f $TMP1
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exit 1
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fi
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trap "/bin/rm -f $TMP1 $TMP2" 0 1 2 13 15
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diff $dflags -- $1 $3 > $TMP1
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diff $dflags -- $2 $3 > $TMP2
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$diff3prog $d3flags -- $TMP1 $TMP2 $1 $2 $3
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exit $?
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