[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, 2008, 2009  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 3 of the License, 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.  If not, see <http://www.gnu.org/licenses/>.


DIFF="diff"
usage="$0: Usage: vcdiff [--brief] [-q] [-r<sid1>] [-r<sid2>] [diffopts] sccsfile..."

# Now that we use `sccs get' rather than just `get', we don't need this.
# 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=`mktemp /tmp/geta.XXXXXXXX`
			sccs get -s -p -k $sid1 "$f" > $rev1 &&
			case $sid2 in
			'')
				workfile=`expr " /$f" : '.*/s.\(.*\)'`
				;;
			*)
				rev2=`mktemp /tmp/getb.XXXXXXXX`
				sccs 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	#
294981c7	6	# Copyright (C) 1992, 1993, 1995, 1997, 2001, 2002, 2003, 2004, 2005,
f5d0ac07	7	# 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
294981c7	8
b3ae7a0a	9	# This file is part of GNU Emacs.
294981c7 GM	10
294981c7 GM	11	# GNU Emacs is free software: you can redistribute it and/or modify
b3ae7a0a	12	# it under the terms of the GNU General Public License as published by
294981c7 GM	13	# the Free Software Foundation, either version 3 of the License, or
	14	# (at your option) any later version.
	15
b3ae7a0a GM	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.
294981c7	20
b3ae7a0a	21	# You should have received a copy of the GNU General Public License
294981c7 GM	22	# along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
294981c7 GM	23
ae94cd0c ER	24
ae94cd0c ER	25	DIFF="diff"
0fd6b177	26	usage="$0: Usage: vcdiff [--brief] [-q] [-r<sid1>] [-r<sid2>] [diffopts] sccsfile..."
ae94cd0c	27
14b11401 SM	28	# Now that we use `sccs get' rather than just `get', we don't need this.
14b11401 SM	29	# PATH=$PATH:/usr/ccs/bin:/usr/sccs:/usr/xpg4/bin # common SCCS hangouts
cbf35b94	30
09b7af0a	31	echo="echo"
7509d397	32	sid1= sid2=
ae94cd0c ER	33
	34	for f
	35	do
	36	case $f in
	37	-*)
	38	case $f in
0fd6b177 PE	39	--brief)
0fd6b177 PE	40	DIFF=cmp;;
12946476 PE	41	-q)
12946476 PE	42	echo=:;;
ae94cd0c ER	43	-r?*)
ae94cd0c ER	44	case $sid1 in
7509d397	45	'')
ae94cd0c ER	46	sid1=$f
	47	;;
	48	*)
	49	case $sid2 in
	50	?*) echo "$usage" >&2; exit 2 ;;
	51	esac
	52	sid2=$f
	53	;;
	54	esac
	55	;;
	56	*)
	57	options="$options $f"
	58	;;
	59	esac
	60	shift
	61	;;
	62	*)
	63	break
	64	;;
	65	esac
	66	done
	67
	68	case $# in
	69	0)
	70	echo "$usage" >&2
	71	exit 2
	72	esac
	73
	74
	75	rev1= rev2= status=0
	76	trap 'status=2; exit' 1 2 13 15
	77	trap 'rm -f $rev1 $rev2 \|\| status=2; exit $status' 0
	78
	79	for f
	80	do
	81	s=2
	82
	83	case $f in
	84	s.* \| /s.)
	85	if
95de358c	86	rev1=`mktemp /tmp/geta.XXXXXXXX`
14b11401	87	sccs get -s -p -k $sid1 "$f" > $rev1 &&
ae94cd0c ER	88	case $sid2 in
	89	'')
	90	workfile=`expr " /$f" : './s.\(.\)'`
	91	;;
	92	*)
95de358c	93	rev2=`mktemp /tmp/getb.XXXXXXXX`
14b11401	94	sccs get -s -p -k $sid2 "$f" > $rev2
ae94cd0c ER	95	workfile=$rev2
	96	esac
	97	then
09b7af0a	98	$echo $DIFF $options $rev1 $workfile >&2
ae94cd0c ER	99	$DIFF $options $rev1 $workfile
	100	s=$?
	101	fi
	102	;;
	103	*)
	104	echo "$0: $f is not an SCCS file" >&2
	105	esac
	106
	107	if test $status -lt $s
	108	then status=$s
	109	fi
	110	done
ab5796a9 MB	111
ab5796a9 MB	112	# arch-tag: 4344ba3a-bcbe-4f77-971c-f43c1606953a