[bpt/emacs.git] / lib-src / vcdiff

#! /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
Commit	Line	Data
d5ad1373	1	#! /bin/sh
ae94cd0c ER	2	#
	3	# Enhanced sccs diff utility for use with vc mode.
	4	# This version is more compatible with rcsdiff(1).
	5	#
b3ae7a0a GM	6	# Copyright (C) 1992, 1993, 1995, 1997, 2001
	7	# Free Software Foundation, Inc.
	8	#
	9	# This file is part of GNU Emacs.
	10	#
	11	# GNU Emacs is free software; you can redistribute it and/or modify
	12	# it under the terms of the GNU General Public License as published by
	13	# the Free Software Foundation; either version 2, or (at your option)
	14	# any later version.
	15	#
	16	# GNU Emacs is distributed in the hope that it will be useful,
	17	# but WITHOUT ANY WARRANTY; without even the implied warranty of
	18	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	19	# GNU General Public License for more details.
	20	#
	21	# You should have received a copy of the GNU General Public License
	22	# along with GNU Emacs; see the file COPYING. If not, write to the
	23	# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
	24	# Boston, MA 02111-1307, USA.
	25	#
	26	# $Id: vcdiff,v 1.6 1997/01/01 05:33:42 eggert Exp $
ae94cd0c ER	27	#
	28
	29	DIFF="diff"
0fd6b177	30	usage="$0: Usage: vcdiff [--brief] [-q] [-r<sid1>] [-r<sid2>] [diffopts] sccsfile..."
ae94cd0c	31
7509d397	32	PATH=$PATH:/usr/ccs/bin:/usr/sccs:/usr/xpg4/bin # common SCCS hangouts
cbf35b94	33
12946476	34	echo=
7509d397	35	sid1= sid2=
ae94cd0c ER	36
	37	for f
	38	do
	39	case $f in
	40	-*)
	41	case $f in
0fd6b177 PE	42	--brief)
0fd6b177 PE	43	DIFF=cmp;;
12946476 PE	44	-q)
12946476 PE	45	echo=:;;
ae94cd0c ER	46	-r?*)
ae94cd0c ER	47	case $sid1 in
7509d397	48	'')
ae94cd0c ER	49	sid1=$f
	50	;;
	51	*)
	52	case $sid2 in
	53	?*) echo "$usage" >&2; exit 2 ;;
	54	esac
	55	sid2=$f
	56	;;
	57	esac
	58	;;
	59	*)
	60	options="$options $f"
	61	;;
	62	esac
	63	shift
	64	;;
	65	*)
	66	break
	67	;;
	68	esac
	69	done
	70
	71	case $# in
	72	0)
	73	echo "$usage" >&2
	74	exit 2
	75	esac
	76
	77
	78	rev1= rev2= status=0
	79	trap 'status=2; exit' 1 2 13 15
	80	trap 'rm -f $rev1 $rev2 \|\| status=2; exit $status' 0
	81
	82	for f
	83	do
	84	s=2
	85
	86	case $f in
	87	s.* \| /s.)
	88	if
	89	rev1=/tmp/geta$$
	90	get -s -p -k $sid1 "$f" > $rev1 &&
	91	case $sid2 in
	92	'')
	93	workfile=`expr " /$f" : './s.\(.\)'`
	94	;;
	95	*)
	96	rev2=/tmp/getb$$
	97	get -s -p -k $sid2 "$f" > $rev2
	98	workfile=$rev2
	99	esac
	100	then
12946476	101	$echo $DIFF $options $sid1 $sid2 $workfile >&2
ae94cd0c ER	102	$DIFF $options $rev1 $workfile
	103	s=$?
	104	fi
	105	;;
	106	*)
	107	echo "$0: $f is not an SCCS file" >&2
	108	esac
	109
	110	if test $status -lt $s
	111	then status=$s
	112	fi
	113	done