#!/bin/bash

EMERGE_OPT=$1
equery="equery -C -q"

echo "Finding installed Java packages..."


#for pattern in ${IGNORE_PACKAGES}; do
#	
#done

JAVA_PACKAGES=$( (${equery} depends virtual/jre; ${equery} depends virtual/jdk) | sort | uniq | grep -v -e mozilla- -e openoffice -e gecko-sdk)

FIXED_PACKAGES=""
for package in ${JAVA_PACKAGES}; do
	fixed_package="=${package}"
	FIXED_PACKAGES="${FIXED_PACKAGES} ${fixed_package}"
done



echo "Determining which Java packages are in the world file..."
WORLD=/var/lib/portage/world
WORLD_PACKAGES=""
for package in ${JAVA_PACKAGES}; do
	echo "Adjusting '${package}'...."
	# Pull of the category
	category=${package%%/*}
	echo "Category: ${category}"

	# Pull of the package name
	name=${package##*/}
	# Strip off the version
	name=${name%%-[0123456789]*} # you'd think bash would know \d...
	echo "Name: ${name}"

	package="${category}/${name}"
	echo "Checking if ${package} is in world..."
	grep ${package} ${WORLD}
	if [[ $? == 0 ]]; then
		echo "Found ${package} in world file"
		WORLD_PACKAGES="${WORLD_PACKAGES} ${package}"
	fi
done
[[ -n ${DEBUG} ]] && echo "WORLD_PACKAGES: ${WORLD_PACKAGES}" >> java-remerger.debug

echo "Removing Java packages..."
emerge -C ${EMERGE_OPT} ${FIXED_PACKAGES}

echo "Re-emerging Java packages that were in the world..."
emerge ${EMERGE_OPT} ${WORLD_PACKAGES}

echo "You might want to do a emerge --depclean and revdep-rebuild to make sure everything is sane."