set -e
verbose=''
while getopts Sv OPT; do
  case "$OPT" in
    S)
      sim=false
      ;;
    v)
      verbose=-v
      ;;
  esac
done
shift "$(($OPTIND - 1))"
download_dir="${1:-.}"
echo $download_dir

outdir="${2:-.}"
url_base=http://parsec.cs.princeton.edu/download/3.0
basenames=''
basenames="$basenames parsec-3.0-core.tar.gz"
basenames="$basenames parsec-3.0-input-sim.tar.gz"
basenames="$basenames parsec-3.0-input-native.tar.gz"
mkdir -p "$outdir"
for basename in $basenames; do
  if [ ! -f "${download_dir}/${basename}" ]; then
    wget -P "$download_dir" $verbose "${url_base}/${basename}"
  fi
  tar -xz $verbose -f "${download_dir}/${basename}" -C "$outdir" --skip-old-files --strip-components=1
done