#!/bin/sh
here=`pwd`

usage()
{
echo "usage: $@ <inputfile> <outputfile>"
echo "inputfile contains a list of packages, binaries, or source"
echo "output file will contain a sorted, de-duped list of corresponding source packages"
exit 1
}

if [ -z "$1" ] || [ -z "$2" ]; then usage; fi

rm -f $2

for package in `cat $1`
do
  echo -n "finding source for $package:"
  sourcepackage=`grep-aptavail -X -FSource -FPackage $package -s Source:Package | awk '{ print $2 }' | sort | uniq`
  if [ -z "${sourcepackage}" ]; then 
    echo "No source found for $package"; 
  else
    echo ${sourcepackage} >> $2
    echo " ${sourcepackage}"
  fi
done