#!/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