52 lines
1.8 KiB
C++
52 lines
1.8 KiB
C++
/*****************************************************************************
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*
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* This file is part of Mapnik (c++ mapping toolkit)
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*
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* Copyright (C) 2015 Artem Pavlenko
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*****************************************************************************/
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#ifndef LARGE_GEOJSON_FEATURESET_HPP
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#define LARGE_GEOJSON_FEATURESET_HPP
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#include <mapnik/feature.hpp>
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#include "geojson_datasource.hpp"
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#include <deque>
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#include <cstdio>
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class large_geojson_featureset : public mapnik::Featureset
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{
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public:
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using array_type = std::deque<geojson_datasource::item_type>;
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using file_ptr = std::unique_ptr<std::FILE, int (*)(std::FILE *)>;
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large_geojson_featureset(std::string const& filename,
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array_type && index_array);
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virtual ~large_geojson_featureset();
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mapnik::feature_ptr next();
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private:
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file_ptr file_;
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const array_type index_array_;
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array_type::const_iterator index_itr_;
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array_type::const_iterator index_end_;
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mapnik::context_ptr ctx_;
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};
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#endif // LARGE_GEOJSON_FEATURESET_HPP
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