#!/bin/sh

set -eu

infile="$1"; shift
outfile="$1"; shift
# remaining arguments are packagelist files

pkgdesc=$(perl -nE '/^[#]{2} (.*)/ and say "# $1"; /^[#]{1} (.*)/ and say "#  * $1"' "$@") #'
pkglist=$(perl -ne 'chomp; /^[^#]+/ and print "$_ "' "$@")

export pkgdesc pkglist

mkdir -p $(dirname $outfile)
perl -pe 's,__PKGDESC__,$ENV{"pkgdesc"},;s,__PKGLIST__,$ENV{"pkglist"},' < $infile > $outfile~
mv -f $outfile~ $outfile