#!/bin/bash
#
# Sort packages in build order
#
BASE="$HOME/GIT/branches/ucs-3.0/ucs"

get () {
	if [ -n "$1" ]
	then
		local section="^Package: $1\$"
	else
		local section="^Source: "
	fi
	local key=$2
	ldapsearch-wrapper <control | sed -nre "/$section/,/^\$/{/^($key): /{s/^($key): //;s/ \|[^,]+(,|\$)//g;s/( \([^)]+\))?(,|\$)/\n/gp}}"
}

tmp=$(mktemp)
trap "rm -f '$tmp'" EXIT

find "$BASE" -name packaging -prune -o -name control -printf '%h\n' | while read d
do
	cd "$d"
	rd=${d#$BASE/}
	src=$(get '' 'Source')
	pre=$(get '' 'Build-Depends(-Indep)?')
	for pkg in $pre
	do
		echo "s:$src	b:$pkg"
	done
	pkgs=$(get '.+' 'Package')
	for post in $pkgs
	do
		echo "b:$post	s:$src"
		pre=$(get "$post" 'Depends|Pre-Depends' | grep -v '${.*}')
		for pkg in $pre
		do
			echo "b:$post	b:$pkg"
		done
	done
done | tsort | sed -ne 's/^s://p' | tac | tee "$tmp"

read -p Continue

while read p
do
	set -e
	cd "$BASE"
	case "$p" in
		\#*) continue ;;
	esac
	dpkg-scanpackages . >Packages
	aptitude update
	aptitude -y upgrade
	echo "===== $p"
	cd "$BASE"/*/"$p"
	LC_ALL=C dpkg-checkbuilddeps 2>&1 | sed -ne 's/([^)]\+)//g;s/dpkg-checkbuilddeps: Unmet build dependencies: //p' | xargs --no-run-if-empty aptitude -y install
	dpkg-buildpackage -uc -us -b
done <"$tmp"