# portdir goodies
eportdir() {
	if [[ -n "${PORTDIR_CACHE}" ]]; then
		echo "${PORTDIR_CACHE}"
	elif [[ -d /usr/portage ]]; then
		PORTDIR_CACHE="/usr/portage"
		eportdir
	else
		PORTDIR_CACHE="$(portageq portdir)"
		eportdir
	fi
}

echo1() { echo "$1"; }

efind() {
	local d cat pkg
	d=$(eportdir)
	
	case $1 in
		*-*/*)
			pkg=${1##*/}
			cat=${1%/*}
			;;
		
		?*)
			pkg=${1}
			cat=$(echo1 ${d}/*-*/${pkg}/*.ebuild)
			[[ -f $cat ]] || cat=$(echo1 ${d}/*-*/${pkg}*/*.ebuild)
			[[ -f $cat ]] || cat=$(echo1 ${d}/*-*/*${pkg}/*.ebuild)
			[[ -f $cat ]] || cat=$(echo1 ${d}/*-*/*${pkg}*/*.ebuild)
			if [[ ! -f $cat ]]; then
				return 1
			fi
			pkg=${cat%/*}
			pkg=${pkg##*/}
			cat=${cat#${d}/}
			cat=${cat%%/*}
		;;
	esac
	
	echo ${cat}/${pkg}
}

ecd() {
	local pc d
	pc=$(efind $@)
	d=$(eportdir)
	[[ $pc == "" ]] && return 1
	cd ${d}/${pc}
}

usedesc() {
	local d
	d=$(eportdir)
	
	echo "global:"
	grep "$1 - " ${d}/profiles/use.desc
	
	echo "local:"
	grep ":$1 - " ${d}/profiles/use.local.desc
}