/*
 * This file is part of the Owl Positioning System (OwlPS).
 * OwlPS is a project of the University of Franche-Comte
 * (Université de Franche-Comté), France.
 *
 * Copyright © Université de Franche-Comté 2007-2012.
 *
 * Corresponding author: Matteo Cypriani <mcy@lm7.fr>
 *
 ***********************************************************************
 *
 * This software is governed by the CeCILL license under French law and
 * abiding by the rules of distribution of free software. You can use,
 * modify and/or redistribute the software under the terms of the CeCILL
 * license as circulated by CEA, CNRS and INRIA at the following URL:
 * http://www.cecill.info
 *
 * As a counterpart to the access to the source code and rights to copy,
 * modify and redistribute granted by the license, users are provided
 * only with a limited warranty and the software's authors, the holder
 * of the economic rights, and the successive licensors have only
 * limited liability.
 *
 * In this respect, the user's attention is drawn to the risks
 * associated with loading, using, modifying and/or developing or
 * reproducing the software by the user in light of its specific status
 * of free software, that may mean that it is complicated to manipulate,
 * and that also therefore means that it is reserved for developers and
 * experienced professionals having in-depth computer knowledge. Users
 * are therefore encouraged to load and test the software's suitability
 * as regards their requirements in conditions enabling the security of
 * their systems and/or data to be ensured and, more generally, to use
 * and operate it in the same conditions as regards security.
 *
 * The fact that you are presently reading this means that you have had
 * knowledge of the CeCILL license and that you accept its terms.
 *
 ***********************************************************************
 */


#include "outputnetworksocket.hh"
#include "resultlist.hh"
#include "result.hh"
#include "posexcept.hh"

#include <cstdio> // For perror()
#include <unistd.h> // For close()

using namespace std ;



/* *** Constructors *** */


OutputNetworkSocket::~OutputNetworkSocket()
{
  close_socket() ;
}



/* *** Operations *** */


/**
 * Normally, the socket is closed automatically by the destructor. Use
 * this if you want to close the socket prematurely.
 * #sockfd is set to -1, even in case of error.
 * @return \em true if the socket were successfully closed or were not
 * opened.
 * @return \em false in case of error.
 */
bool OutputNetworkSocket::close_socket()
{
  if (sockfd >= 0)
    {
      if (close(sockfd))
        {
          perror("Cannot close network socket") ;
          return false ;
        }

      sockfd = -1 ;
    }

  return true ;
}


void OutputNetworkSocket::write(const Result &result)
{
  send_data(result.to_csv()) ;
}


void OutputNetworkSocket::write(const ResultList &results)
{
  if (! results.empty())
    send_data(results.to_csv()) ;
}