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|
#! /bin/sh
#
# Enhanced sccs diff utility for use with vc mode.
# This version is more compatible with rcsdiff(1).
#
# Copyright (C) 1992, 1993, 1995, 1997, 2001
# Free Software Foundation, Inc.
#
# This file is part of GNU Emacs.
#
# GNU Emacs 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, or (at your option)
# any later version.
#
# GNU Emacs 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.
#
# You should have received a copy of the GNU General Public License
# along with GNU Emacs; see the file COPYING. If not, write to the
# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.
#
# $Id: vcdiff,v 1.6 1997/01/01 05:33:42 eggert Exp $
#
DIFF="diff"
usage="$0: Usage: vcdiff [--brief] [-q] [-r<sid1>] [-r<sid2>] [diffopts] sccsfile..."
PATH=$PATH:/usr/ccs/bin:/usr/sccs:/usr/xpg4/bin # common SCCS hangouts
echo=
sid1= sid2=
for f
do
case $f in
-*)
case $f in
--brief)
DIFF=cmp;;
-q)
echo=:;;
-r?*)
case $sid1 in
'')
sid1=$f
;;
*)
case $sid2 in
?*) echo "$usage" >&2; exit 2 ;;
esac
sid2=$f
;;
esac
;;
*)
options="$options $f"
;;
esac
shift
;;
*)
break
;;
esac
done
case $# in
0)
echo "$usage" >&2
exit 2
esac
rev1= rev2= status=0
trap 'status=2; exit' 1 2 13 15
trap 'rm -f $rev1 $rev2 || status=2; exit $status' 0
for f
do
s=2
case $f in
s.* | */s.*)
if
rev1=/tmp/geta$$
get -s -p -k $sid1 "$f" > $rev1 &&
case $sid2 in
'')
workfile=`expr " /$f" : '.*/s.\(.*\)'`
;;
*)
rev2=/tmp/getb$$
get -s -p -k $sid2 "$f" > $rev2
workfile=$rev2
esac
then
$echo $DIFF $options $sid1 $sid2 $workfile >&2
$DIFF $options $rev1 $workfile
s=$?
fi
;;
*)
echo "$0: $f is not an SCCS file" >&2
esac
if test $status -lt $s
then status=$s
fi
done
|
