#!/bin/sh

# Script for conversion of old PRISM files (Linux/Solaris)

if [ "$1" = "" ]; then
  echo "Usage: prism3to4 <file> [<outfile>]"
  exit
fi

# Run using main PRISM script with this class
PRISM_MAINCLASS="parser.Prism3To4"
export PRISM_MAINCLASS

if [ "$2" = "" ]; then
  prism "$1"
else
  if [ "$2" = "$1" ]; then
    ( prism "$1" > "$2".new && mv "$2".new "$2" ) || rm "$2".new
  else
    prism "$1" > "$2"
  fi
fi