00001 /********************************************************************* 00002 * Software License Agreement (BSD License) 00003 * 00004 * Copyright (c) 2009, Willow Garage, Inc. 00005 * All rights reserved. 00006 * 00007 * Redistribution and use in source and binary forms, with or without 00008 * modification, are permitted provided that the following conditions 00009 * are met: 00010 * 00011 * * Redistributions of source code must retain the above copyright 00012 * notice, this list of conditions and the following disclaimer. 00013 * * Redistributions in binary form must reproduce the above 00014 * copyright notice, this list of conditions and the following 00015 * disclaimer in the documentation and/or other materials provided 00016 * with the distribution. 00017 * * Neither the name of the Willow Garage nor the names of its 00018 * contributors may be used to endorse or promote products derived 00019 * from this software without specific prior written permission. 00020 * 00021 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00022 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00023 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 00024 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 00025 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 00026 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 00027 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 00028 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 00029 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00030 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 00031 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 00032 * POSSIBILITY OF SUCH DAMAGE. 00033 *********************************************************************/ 00034 00035 #include "message_transport/publisher.h" 00036 #include "message_transport/publisher_plugin.h" 00037 #include <pluginlib/class_loader.h> 00038 #include <boost/ptr_container/ptr_vector.hpp> 00039 #include <boost/foreach.hpp> 00040 #include <boost/algorithm/string/erase.hpp> 00041 00042 namespace message_transport { 00043 00044 Publisher::Publisher(ros::NodeHandle &nh) : impl_() { 00045 } 00046 00047 uint32_t Publisher::getNumSubscribers() const 00048 { 00049 if (impl_ && impl_->isValid()) return impl_->getNumSubscribers(); 00050 return 0; 00051 } 00052 00053 std::string Publisher::getTopic() const 00054 { 00055 if (impl_) return impl_->getTopic(); 00056 return std::string(); 00057 } 00058 00059 00060 void Publisher::shutdown() 00061 { 00062 if (impl_) { 00063 impl_->shutdown(); 00064 impl_.reset(); 00065 } 00066 } 00067 00068 Publisher::operator void*() const 00069 { 00070 return (impl_ && impl_->isValid()) ? (void*)1 : (void*)0; 00071 } 00072 00073 00074 } //namespace message_transport