#!/bin/sh
PORTDIR=/usr/portage
PROFDIR="${PORTDIR}"/profiles

[ -f profiles-nodes ] || \
find "${PROFDIR}" -mindepth 2 \( \
	-name deprecated -o -name eapi -o -name make.defaults -o \
	-name package.mask -o -name package.provided -o -name packages -o \
	-name packages.build -o -name package.use -o -name package.use.force -o \
	-name package.use.mask -o -name package.use.mask.example -o -name parent -o \
	-name profile.bashrc -o -name use.force -o -name use.mask -o -name virtuals \) \
	-printf '%h\n' | \
	sort | \
	uniq | \
	sed "s~^${PROFDIR}/*~~g" >profiles-nodes

[ -f profiles-edges ] || \
for top_p in `find "${PROFDIR}" -name parent` ; do
	top_p_dir="${top_p%parent}"
	echo "=== ${top_p}" 1>&2
	# Child -> Parent
	sed <${top_p} -e '/^#/d' -e "s~^~${top_p_dir}~g" | xargs -n1 readlink -f \
	|sed \
		-e "s,^,${top_p_dir}:,g" \
		-e "s,/*${PROFDIR}/*,,g" \
	|sed -r \
		-e 's,(:|^)/+,\1,g' \
		-e 's,/+(:|$),\1,g' \
	|sed -r \
		-e 's,/?usr/portage/profiles,,g'
done >profiles-edges