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#!/usr/bin/env python3
###############################################################################
# Software License Agreement (BSD License)
#
# Copyright (c) 2016, JSK Lab, University of Tokyo.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following
# disclaimer in the documentation and/o2r other materials provided
# with the distribution.
# * Neither the name of the JSK Lab nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
###############################################################################
__author__ = 'Kentaro Wada <www.kentaro.wada@gmail.com>'
import rospy
from std_msgs.msg import String
class EmptyStringPublisher(object):
def __init__(self):
self.pub = rospy.Publisher('~output', String, queue_size=1)
self.timer_pub = rospy.Timer(
rospy.Duration(0.1), self.publish_callback)
def publish_callback(self, event):
self.pub.publish(String())
if __name__ == '__main__':
rospy.init_node('empty_string_publisher')
EmptyStringPublisher()
rospy.spin()
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