tws_get_version

#!/bin/sh

TWS_TIMEOUT="30"

if ! test -e "$1"; then
	echo "Usage: $0 <jar file | TWS dir>" 1>&2
	exit 1
fi

ARG1="$(readlink -v -f "$1")" || exit 1

TDIR="$(mktemp -d -t twsdir.XXXX)" || exit 1
trap "rm -rf ${TDIR}" exit
cd "${TDIR}" || exit 1

if test -d "${ARG1}"; then
	if test -f "${ARG1}/jts.jar" ;then
		TWS_CP="${ARG1}/jts.jar:${ARG1}/*"
	else
		echo "error: directory '"${ARG1}"' is not a TWS installation" 2>&1
		exit 1
	fi
else
	if jar xf "${ARG1}" &>/dev/null && test -f IBJts/jts.jar; then
		TWS_CP="IBJts/jts.jar:IBJts/*"
	else
		echo "error: invalid jar file '"${ARG1}"'" 2>&1
		exit 1
	fi
fi

TWS_HOME="${TDIR}/twshome"
mkdir "${TWS_HOME}" || exit 1
LOG_FIFO="${TDIR}/twslogpipe"
mkfifo "${LOG_FIFO}" || exit 1

java -cp "${TWS_CP}" jclient.LoginFrame "${TWS_HOME}" &>"${LOG_FIFO}" &
TWS_PID="$!"

VERSION_LINE="$(timeout "${TWS_TIMEOUT}" grep -m1 --line-buffered "JTS-Main: Build" "${LOG_FIFO}")"
grep_rval="$?"
kill -9 "${TWS_PID}" &>/dev/null

if test "${grep_rval}" = "124"; then
	echo "timeout waiting for version string" 1>&2
	exit 1
elif test "${grep_rval}" != "0"; then
	echo "could not grep version string" 1>&2
	exit 1
fi

echo "${VERSION_LINE}"