lib/scripts/run-mlworks

tuned;

#!/bin/bash
#
# $Id$
#
# MLWorks startup script (for 1.0r2 or later).
#
# Global vars: INFILE OUTFILE MLTEXT TERMINATE NOWRITE ISABELLE_TMP,
# and from settings


## diagnostics

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


## basic setup

EXIT="fun exit 0 : unit = (OS.Process.exit OS.Process.success): unit | exit _ = OS.Process.exit OS.Process.failure;"
COMMIT="fun commit () = (Shell.saveImage (\"$OUTFILE\", false); true);"
COMMIT_RO='fun commit () = (TextIO.output (TextIO.stdErr, "Error - Database is not opened for writing.\\n"); false);'


## prepare databases

if [ -z "$INFILE" ]; then
  MLWORKS="mlworks-basis -tty"
else
  MLWORKS="mlimage -load $INFILE -tty"
  EXIT=""
fi

[ -z "$OUTFILE" ] && COMMIT="$COMMIT_RO"
[ -n "$OUTFILE" -a -f "$OUTFILE" ] && { chmod +w "$OUTFILE" || fail_out; }

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


## run it!

START_MLWORKS="$ML_HOME/$MLWORKS 2>&1 $ML_OPTIONS"

if [ -n "$TERMINATE" ]; then
  sh -c "echo '$MLTEXT' '$MLEXIT' | $START_MLWORKS"
  RC=$?
elif [ -z "$MLTEXT" ]; then
  sh -c "{ $ISABELLE_HOME/lib/Tools/symbolinput; echo '$MLEXIT'; } | $START_MLWORKS"
  RC=$?
else
  sh -c "{ echo '$MLTEXT'; $ISABELLE_HOME/lib/Tools/symbolinput; echo '$MLEXIT'; } | $START_MLWORKS"
  RC=$?
fi

[ -n "$OUTFILE" -a -n "$NOWRITE" ] && chmod -w "$OUTFILE"

exit $RC