#!/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

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 [ ! -z "$debug" ] ; then
  echo debug=$debug
  echo REALTIME=$REALTIME
  echo ARGS="$ARGS"
pwd
fi

eval gladevcp "$ARGS"
halrun -U