#! /bin/sh
# make symlinks to alternate names for manpages

PATH=/bin:/usr/bin ; export PATH
usage="$0 mandir manpage ..."

if test ! -e $1
then
	echo "$0: directory \`$1' does not exist, aborting" >&2
	exit 1
fi
cd $1 || {
	echo "$0: cannot cd \`$1', aborting" >&2
	exit 1
}
shift

for m
do
	if test ! -f $m
	then
		echo "$0: cannot find \`$m'" >&2
		exit 1
	fi
	suf=$(expr $m : '.*\([.][^.][^.]*\)$')

	# a .\"+ line rules
	them=$(awk '/^\.\\"\+[ 	]/ { for (i = 2; i <= NF; i++) print $i }' $m)

	# otherwise, try to intuit the list of names from the NAME section
	if test " $them" = " "
	then
		them=$(	awk '/^\.SH[ \t]+NAME/,/^\.SH[ \t]+[^N]/' $m |
			egrep -v '^\.' | tr '	,' '  ' |
			sed -n '/  *\\*-  *.*/s///p' | tr -s ' ' '\012' |
			egrep -v '^ipsec$' )
	fi

	# do it
	for f in $them
	do
		case $f in
		ipsec*)	ff="$f"		;;	# ipsec.8, ipsec.conf.5, etc.
		*)	ff="ipsec_$f"	;;
		esac
		case $ff in
		*.[1-8])			;;
		*)		ff="$ff$suf"	;;
		esac
		if test " $ff" != " $m"
		then
			ln -f -s $m $ff
		fi
	done
done