#! /bin/sh
#

fatal()
{
  echo "$*"
  exit 1
}

toggle()
{
  case $1 in
    no)  echo "yes" ;;
    yes) echo "no" ;;
    *)   fatal "Unknown value to toggle ($1)" ;;
  esac
}

usage()
{
cat <<EOF
run_scenarios [options]
  -s         - specify scheduler simulator executable (REQUIRED)
  -1         - toggle running single CPU scenarios (default=no)
  -4         - toggle running four CPU scenarios (default=no)
  -A         - toggle all scenario flags
  -v         - toggle verbose output (default=no)
EOF
}

vecho()
{
  if [ ${verbose} = "yes" ] ; then
    echo "$*"
  fi
}

verbose=no
do_all=no
do_one=no
do_four=no
schedsim=

while getopts vs:A14 OPT
do
  case "$OPT" in
    v) verbose=`toggle ${verbose}` ;;
    s) schedsim=${OPTARG} ;;
    A) do_all=`toggle ${do_all}`   ;;
    1) do_one=`toggle ${do_one}`   ;;
    4) do_four=`toggle ${do_four}` ;;
    *) usage; exit 1;
  esac
done

if [ "X${schedsim}" != "X" ] ; then
  type ${schedsim} >/dev/null 2>&1 || fatal ${schedsim} not found
else
  fatal "schedsim binary must be specified with -s option"
fi

test -d scenarios || fatal scenarios directory is not present

if [ ${do_all} = "yes" ]; then
  SCENARIOS="scenarios/*.scen"
else
  SCENARIOS=
fi

if [ ${do_one} = "yes" ]; then
  SCENARIOS="${SCENARIOS} scenarios/cpus1*.scen"
fi

if [ ${do_four} = "yes" ]; then
  SCENARIOS="${SCENARIOS} scenarios/cpus4*.scen"
fi

test "X${SCENARIOS}" = "X" && fatal "No scenarios specified"

for scenario in `ls -1 ${SCENARIOS}`
do
  base=`echo ${scenario} | sed -s 's/\.scen$//'`
  expected=${base}.expected
  output=${base}.output
  vecho Running ${scenario}
  ${schedsim} $scenario  >${output}
  if [ -r ${expected} ] ; then
    diff ${output} ${expected} >/dev/null
    if [ $? -ne 0 ] ; then
      echo "FAIL - ${scenario}"
      echo "    diff ${output} ${expected} "
    else
      echo "PASS - ${scenario}"
    fi
  else
      echo "UNKNOWN - ${scenario}"
      echo "    cp ${output} ${expected} "
  fi
done