mapnik/plugins/input/geojson/geojson_featureset.cpp

57 lines
1.9 KiB
C++

/*****************************************************************************
*
* This file is part of Mapnik (c++ mapping toolkit)
*
* Copyright (C) 2011 Artem Pavlenko
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*****************************************************************************/
// mapnik
#include <mapnik/feature.hpp>
// stl
#include <string>
#include <vector>
#include <deque>
#include "geojson_featureset.hpp"
geojson_featureset::geojson_featureset(std::vector<mapnik::feature_ptr> const& features,
array_type::const_iterator index_itr,
array_type::const_iterator index_end)
: features_(features),
index_itr_(index_itr),
index_end_(index_end) {}
geojson_featureset::~geojson_featureset() {}
mapnik::feature_ptr geojson_featureset::next()
{
if (index_itr_ != index_end_)
{
#if BOOST_VERSION >= 105600
geojson_datasource::item_type const& item = *index_itr_++;
std::size_t index = item.second;
#else
std::size_t index = *index_itr_++;
#endif
if ( index < features_.size())
{
return features_.at(index);
}
}
return mapnik::feature_ptr();
}