#!/bin/sh
#
# Shows the difference in pickler output between two variations on a class.
#
# If quick and strap are built normally you can run
#
#   diffPickled foo.bar.Baz
#
# to see any differences between them in that class.

USAGE="Usage: $0 classpath1 classpath2 class"
TOOLSDIR=`dirname $0`
BUILDDIR="${TOOLSDIR}/../build"
QUICKDIR="${BUILDDIR}/quick"
STRAPDIR="${BUILDDIR}/strap"

CP1=""
CP2=""
CLASS=""

if [ $# == 1 ] ; then
  if [ -e ${QUICKDIR} ] && [ -e ${STRAPDIR} ] ; then
    CP1=`${TOOLSDIR}/quickcp`
    CP2=`${TOOLSDIR}/strapcp`
    CLASS=$1
  else
    echo $USAGE
    echo "(If only one argument is given, $QUICKDIR and $STRAPDIR must exist.)"
    exit 1
  fi
elif [ $# == 3 ] ; then
  CP1=$1
  CP2=$2
  CLASS=$3
else
  echo $USAGE
  exit 1
fi

TMPDIR="/tmp/scala_pickle_diff${RANDOM}"

if mkdir -m 0700 "$TMPDIR" 2>/dev/null ; then
  ${TOOLSDIR}/showPickled -cp $CP1 $CLASS > "${TMPDIR}/out1.txt"
  ${TOOLSDIR}/showPickled -cp $CP2 $CLASS > "${TMPDIR}/out2.txt"
  diff "${TMPDIR}/out1.txt" "${TMPDIR}/out2.txt"
  rm -rf ${TMPDIR}
else
  echo "Failed to create temporary directory ${TMPDIR}."
  exit 1
fi