#!/bin/sh
#
# find redundant dependencies

print_help() {
	cat <<EOF	
usage:
	$0 [-f] <pkgs>
	
options:
	-f  fix (remove) redundant pkg from depends
	
EOF
exit 0
}

if [ "$1" ]; then
	while [ "$1" ]; do
		case $1 in
			-f) fix=1;;
			-h) print_help;;
			*) pkg="$pkg $1";;
		esac
		shift
	done
fi

[ "$pkg" ] || pkg=$(apkg -D $(apkg -s))

for i in $pkg; do
	[ "$(apkg -d $i )" ] || continue
	for d in $(apkg -d $i); do
		for dd in $(apkg -d $i); do
			[ "$dd" = "$d" ] && continue
			[ "$(apkg -D $d | grep -x $dd)" ] && {
				echo "[$i] $dd (already pulled from $d)"
				if [ "$fix" ]; then
					sed -i "/^$dd$/d" $(apkg -p $i)/depends
					echo " $dd is removed from $i depends"
					[ -s $(apkg -p $i)/depends ] || rm $(apkg -p $i)/depends
				fi
			}
		done
	done
done

exit 0