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# Copyright 1999-2012 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

#
# Original Author: root
# Purpose: 
#

HOMEPAGE="http://formilux.org"

function unpack_plist ()
{
	[ $# -ne 2 ] \
		&& die "unpack_plist <category> <dst>"

	local cat=$1
	local dst="$2"

	[ ! -d "$dst" ] \
		&& mkdir -p "$dst"

	local t
	[ -e "$PORTAGE_CONFIGROOT/etc/portage/plist/${cat}/transform" ] \
		&& t=(
			$(< $PORTAGE_CONFIGROOT/etc/portage/plist/${cat}/transform)
		)

	find "$PORTAGE_CONFIGROOT/etc/portage/plist/${cat}" \
			-mindepth 2 -maxdepth 2 \
			-type f -printf '%P\n' | sort \
		| while read ; do
			[ "$(best_version ~$REPLY)" != "$REPLY" ] \
				&& ewarn "You should update $PORTAGE_CONFIGROOT/etc/portage/plist/${cat}/$REPLY"

			[ ! -e "$PKGDIR/${REPLY}.tbz2" ] \
				&& die "Can't find $PKGDIR/${REPLY}.tbz2"

			einfo "Extracting ${REPLY} ..."
			qtbz2 --tarbz2 -O "$PKGDIR/${REPLY}.tbz2" \
				| tar xvpj --atime-preserve --show-transformed-names \
					-C "$dst" \
					-T "$PORTAGE_CONFIGROOT/etc/portage/plist/${cat}/${REPLY}" \
					${t[@]/#/--transform } \
				| while read ; do
					einfo "  $REPLY"
				done
		done
}

function check_symbol ()
{
	[ $# -ne 1 ] \
		&& die "chk_dep <fs dir>"

	local dir="$1"
	[ ! -d "$dir" ] \
		&& die "fs dir $dir does not exist"

	mkdir NEEDED SONAME
	einfo "Checking NEEDED and SONAME mismatches ..."

	scanelf -RqBn "$dir" \
		| sed -e "s;$dir/;;" \
		| awk '{
			size=split($1,libs,",")
			for (i = 1 ; i <= size ; i++) {
				print $2 >> "'NEEDED/'"libs[i]
			}
		}'

	scanelf -RqBS "$dir" \
		| sed -e "s;dir/;;" \
		| awk '{
			size=split($1,libs,",")
			for (i = 1 ; i <= size ; i++) {
				print $2 >> "'SONAME/'"libs[i]
			}
		}'

	diff -Nu \
		<(find SONAME -mindepth 1 \
				-printf '%f\n' \
			| sort) \
		<(find NEEDED -mindepth 1 \
				-printf '%f\n' \
			| sort) \
		| egrep '^(\-|\+)[a-zA-Z0-9]' \
		| while read ; do
			case ${REPLY:0:1} in
				-) ewarn "${REPLY:1} is needed by nothing" ;;
				+) ewarn "${REPLY:1} is missing but needed by :"
				   cat NEEDED/${REPLY:1}
				   ;;
			esac
		done

#	| fgrep -v \
#		-f /etc/portage/crossdev/libdl.lst \
#		-f /etc/portage/crossdev/lib-nosoname.lst \
}

function big_compress ()
{
	[ $# -ne 1 ] \
		&& die "big_compress <dir>"

	find ${1} -type d -name bin -or -name sbin \
		| xargs --no-run-if-empty -I {} -- \
	find {} -type f \
		| xargs --no-run-if-empty -- \
	scanelf -mBF '%F' \
		| xargs --no-run-if-empty -- \
	sstrip -z
}