[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, 2002, 2003, 2004,
#               2005, 2006, 2007 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., 51 Franklin Street, Fifth Floor,
# Boston, MA 02110-1301, USA.
#

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="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 $rev1 $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

# arch-tag: 4344ba3a-bcbe-4f77-971c-f43c1606953a
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	#
92b47a4a	6	# Copyright (C) 1992, 1993, 1995, 1997, 2001, 2002, 2003, 2004,
4e6835db	7	# 2005, 2006, 2007 Free Software Foundation, Inc.
b3ae7a0a GM	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
364c38d3 LK	23	# Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
364c38d3 LK	24	# Boston, MA 02110-1301, USA.
b3ae7a0a	25	#
ae94cd0c ER	26
ae94cd0c ER	27	DIFF="diff"
0fd6b177	28	usage="$0: Usage: vcdiff [--brief] [-q] [-r<sid1>] [-r<sid2>] [diffopts] sccsfile..."
ae94cd0c	29
7509d397	30	PATH=$PATH:/usr/ccs/bin:/usr/sccs:/usr/xpg4/bin # common SCCS hangouts
cbf35b94	31
09b7af0a	32	echo="echo"
7509d397	33	sid1= sid2=
ae94cd0c ER	34
	35	for f
	36	do
	37	case $f in
	38	-*)
	39	case $f in
0fd6b177 PE	40	--brief)
0fd6b177 PE	41	DIFF=cmp;;
12946476 PE	42	-q)
12946476 PE	43	echo=:;;
ae94cd0c ER	44	-r?*)
ae94cd0c ER	45	case $sid1 in
7509d397	46	'')
ae94cd0c ER	47	sid1=$f
	48	;;
	49	*)
	50	case $sid2 in
	51	?*) echo "$usage" >&2; exit 2 ;;
	52	esac
	53	sid2=$f
	54	;;
	55	esac
	56	;;
	57	*)
	58	options="$options $f"
	59	;;
	60	esac
	61	shift
	62	;;
	63	*)
	64	break
	65	;;
	66	esac
	67	done
	68
	69	case $# in
	70	0)
	71	echo "$usage" >&2
	72	exit 2
	73	esac
	74
	75
	76	rev1= rev2= status=0
	77	trap 'status=2; exit' 1 2 13 15
	78	trap 'rm -f $rev1 $rev2 \|\| status=2; exit $status' 0
	79
	80	for f
	81	do
	82	s=2
	83
	84	case $f in
	85	s.* \| /s.)
	86	if
	87	rev1=/tmp/geta$$
	88	get -s -p -k $sid1 "$f" > $rev1 &&
	89	case $sid2 in
	90	'')
	91	workfile=`expr " /$f" : './s.\(.\)'`
	92	;;
	93	*)
	94	rev2=/tmp/getb$$
	95	get -s -p -k $sid2 "$f" > $rev2
	96	workfile=$rev2
	97	esac
	98	then
09b7af0a	99	$echo $DIFF $options $rev1 $workfile >&2
ae94cd0c ER	100	$DIFF $options $rev1 $workfile
	101	s=$?
	102	fi
	103	;;
	104	*)
	105	echo "$0: $f is not an SCCS file" >&2
	106	esac
	107
	108	if test $status -lt $s
	109	then status=$s
	110	fi
	111	done
ab5796a9 MB	112
ab5796a9 MB	113	# arch-tag: 4344ba3a-bcbe-4f77-971c-f43c1606953a