#!/bin/bash

# This file is used for scripts that demonstrate gladevcp
# The scripts typically use an extension of .demo
# 1) start realtime
# 2) run glacevcp with supplied parameters
# 3) stop realtime

# Copyright: 2014
# Author:    Dewey Garrett <dgarrett@panix.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

prog=$(basename "$0")

function usage () {
  cat <<EOF
Usage:
      $prog [gladevcp options]


gladevcp_demo: start realtime and invoke gladevcp

The help for gladvcp shows its options:
gladevcp --help
$(gladevcp -h)
EOF
  exit 1
} ;# usage

function popup () {
  msg="$*"
  wish <<EOF &
  wm withdraw .
  tk_messageBox \
    -title "$prog" \
    -message "$msg" \
    -icon error \
    -type ok
  destroy .
EOF
} ;# popup

# begin----------------------------------------------------
REALTIME=$(linuxcnc_var REALTIME)
$REALTIME status >/dev/null
status=$?
if [ "$status" = 0 ] ; then
  msg="$prog: Realtime is already active"
  echo "$msg"
  popup "$msg"
  exit 1
else
  $REALTIME start
fi

case $# in
  0) usage;;
  *) ARGS="$@";;
esac

if [ -n "$debug" ] ; then
  echo "debug=$debug"
  echo "REALTIME=$REALTIME"
  echo "ARGS=$ARGS"
pwd
fi

eval gladevcp "$ARGS"
halrun -U
