lib/scripts/run-smlnj-0.93

fixed EXIT def;

#!/bin/bash -norc
#
# $Id$
#
# SML/NJ startup script (for 0.93).
#
# Global vars: INFILE OUTFILE COPYDB MLTEXT TERMINATE,
# and from settings


## diagnostics

function fail_out()
{
  echo "Unable to create output heap file: \"$OUTFILE\"" >&2
  exit 2
}


## prepare databases

if [ -z "$INFILE" ]; then
  INFILE="$ML_HOME/sml"
  EXIT="val exit = System.Unsafe.CInterface.exit;"
else
  EXIT=""
fi

MOVE=""

if [ -z "$OUTFILE" ]; then
  COMMIT='fun commit () = (output (std_err, "Error - Database is not opened for writing.\n"); false);'
else
  if [ "$INFILE" -ef "$OUTFILE" ]; then
    OUTDIR=$(dirname "$OUTFILE")/tmp
    OUTFILE=$OUTDIR/$(basename "$OUTFILE")
    mkdir -p "$OUTDIR" || fail_out
    MOVE=true
  fi
  [ -f "$OUTFILE" ] && { chmod +w "$OUTFILE" || fail_out }
  COMMIT="fun commit () = not (exportML\"$OUTFILE\");"
fi

MLTEXT="$EXIT $COMMIT $MLTEXT"
MLEXIT="commit();"


## run it!

START_SML="$INFILE $ML_OPTIONS"

if [ -n "$TERMINATE" ]; then
  { echo "$MLTEXT"; echo "$MLEXIT" } | $START_SML
  RC=$?
else
  { echo "$MLTEXT"; $ISABELLE_HOME/lib/scripts/ucat; echo "$MLEXIT" } | $START_SML
  RC=$?
fi

if [ -n "$MOVE" -a -f "$OUTFILE" ]; then
  mv -f "$OUTFILE" "$INFILE" || fail_out
fi

exit $RC