#! /bin/sh
# logroll - roll over log files

# =()<. ${NEWSCONFIG-@<NEWSCONFIG>@}>()=
. ${NEWSCONFIG-/usr/local/libexec/cnews/config}

PATH=$NEWSCTL/bin:$NEWSBIN/maint:$NEWSBIN:$NEWSPATH ; export PATH
umask $NEWSUMASK

suffixes=".9 .8 .7 .6 .5 .4 .3 .2 .1"
initial=
delete=
compat='.3'
defcompat="$compat"
compress="compress -f"
comped='.Z'
notify='sleep 5'

for dummy
do
	case "$1" in
	-o)	suffixes=".ooo .oo .o"
		if test " $compat" = " $defcompat"
		then
			compat='.oo'
		fi
		;;
	-s)	suffixes="$2" ; shift	;;
	-i)	initial="$2" ; shift	;;
	-d)	delete="$2" ; shift	;;
	-c)	compat="$2" ; shift	;;
	-n)	notify="$2" ; shift	;;
	-w)	compress="$2" ; shift	;;
	-z)	comped="$2" ; shift	;;
	-p)	compress=":" ; comped=	;;
	--)	shift ; break		;;
	-*)	echo "$0: unknown option \`$1'" >&2 ; exit 2	;;
	*)	break			;;
	esac
	shift
done

sufs=
sawdel=n
for s in $suffixes
do
	# default -d is final suffix
	if test " $delete" = " "
	then
		delete="$s"
	fi
	# turn on accumulation of sufs at $delete
	if test " $s" = " $delete"
	then
		sawdel=y
	fi
	# do accumulation
	if test " $sawdel" = " y"
	then
		sufs="$sufs $s"
	fi
done
if test " $sufs" = " "
then
	echo "$0: \`$delete' not in suffix sequence" >&2
	exit 1
fi

for f
do
	last=oops
	comp="$comped"
	for s in $sufs "$initial"
	do
		case "$s" in
		"$delete")	rm -f $f$s$comp	;;
		*)	if test -f $f$s$comp
			then
				mv $f$s$comp $f$last$comp || exit 1
				if test " $s" = " $initial"
				then
					touch $f$s$comp || exit 1
					eval $notify
				fi
				if test " $last" = " $compat"
				then
					eval $compress $f$last || exit 1
				fi
			fi
			;;
		esac
		last="$s"
		case "$s" in
		"$compat")	comp=		;;
		esac
	done
done