128 lines
3.3 KiB
C++
128 lines
3.3 KiB
C++
/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
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//
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// demo_xml.cpp
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//
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// (C) Copyright 2002-4 Robert Ramey - http://www.rrsd.com .
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// Use, modification and distribution is subject to the Boost Software
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// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#include <iomanip>
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#include <iostream>
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#include <fstream>
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#include <string>
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#include <cstdio> // remove
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#include <boost/config.hpp>
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#if defined(BOOST_NO_STDC_NAMESPACE)
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namespace std{
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using ::remove;
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}
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#endif
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#include <boost/archive/tmpdir.hpp>
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#include <boost/archive/xml_iarchive.hpp>
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#include <boost/archive/xml_oarchive.hpp>
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#include "demo_gps.hpp"
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void save_schedule(const bus_schedule &s, const char * filename){
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// make an archive
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std::ofstream ofs(filename);
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assert(ofs.good());
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boost::archive::xml_oarchive oa(ofs);
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oa << BOOST_SERIALIZATION_NVP(s);
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}
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void
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restore_schedule(bus_schedule &s, const char * filename)
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{
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// open the archive
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std::ifstream ifs(filename);
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assert(ifs.good());
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boost::archive::xml_iarchive ia(ifs);
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// restore the schedule from the archive
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ia >> BOOST_SERIALIZATION_NVP(s);
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}
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int main(int argc, char *argv[])
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{
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// make the schedule
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bus_schedule original_schedule;
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// fill in the data
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// make a few stops
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bus_stop *bs0 = new bus_stop_corner(
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gps_position(34, 135, 52.560f),
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gps_position(134, 22, 78.30f),
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"24th Street", "10th Avenue"
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);
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bus_stop *bs1 = new bus_stop_corner(
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gps_position(35, 137, 23.456f),
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gps_position(133, 35, 54.12f),
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"State street", "Cathedral Vista Lane"
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);
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bus_stop *bs2 = new bus_stop_destination(
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gps_position(35, 136, 15.456f),
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gps_position(133, 32, 15.300f),
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"White House"
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);
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bus_stop *bs3 = new bus_stop_destination(
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gps_position(35, 134, 48.789f),
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gps_position(133, 32, 16.230f),
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"Lincoln Memorial"
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);
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// make a routes
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bus_route route0;
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route0.append(bs0);
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route0.append(bs1);
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route0.append(bs2);
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// add trips to schedule
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original_schedule.append("bob", 6, 24, &route0);
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original_schedule.append("bob", 9, 57, &route0);
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original_schedule.append("alice", 11, 02, &route0);
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// make aother routes
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bus_route route1;
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route1.append(bs3);
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route1.append(bs2);
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route1.append(bs1);
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// add trips to schedule
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original_schedule.append("ted", 7, 17, &route1);
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original_schedule.append("ted", 9, 38, &route1);
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original_schedule.append("alice", 11, 47, &route1);
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// display the complete schedule
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std::cout << "original schedule";
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std::cout << original_schedule;
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std::string filename(boost::archive::tmpdir());
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filename += "/demo.xml";
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// save the schedule
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save_schedule(original_schedule, filename.c_str());
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// ... some time later
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// make a new schedule
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bus_schedule new_schedule;
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restore_schedule(new_schedule, filename.c_str());
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// and display
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std::cout << "\nrestored schedule";
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std::cout << new_schedule;
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// should be the same as the old one. (except for the pointer values)
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std::remove(filename.c_str());
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delete bs0;
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delete bs1;
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delete bs2;
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delete bs3;
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return 0;
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}
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