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/*****************************************************************************
*
* This file is part of Mapnik (c++ mapping toolkit)
*
* Copyright (C) 2025 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
*
*****************************************************************************/
#ifndef CSV_FEATURESET_HPP
#define CSV_FEATURESET_HPP
#include <mapnik/feature.hpp>
#include <mapnik/unicode.hpp>
#include "csv_utils.hpp"
#include "csv_datasource.hpp"
#include <deque>
#if defined(MAPNIK_MEMORY_MAPPED_FILE)
#include <mapnik/warning.hpp>
MAPNIK_DISABLE_WARNING_PUSH
#include <mapnik/warning_ignore.hpp>
#include <boost/interprocess/mapped_region.hpp>
#include <boost/interprocess/streams/bufferstream.hpp>
MAPNIK_DISABLE_WARNING_POP
#include <mapnik/mapped_memory_cache.hpp>
#endif
class csv_featureset : public mapnik::Featureset
{
using locator_type = csv_utils::geometry_column_locator;
public:
using array_type = std::deque<csv_datasource::item_type>;
csv_featureset(std::string const& filename,
locator_type const& locator,
char separator,
char quote,
std::vector<std::string> const& headers,
mapnik::context_ptr const& ctx,
array_type&& index_array);
~csv_featureset();
mapnik::feature_ptr next();
private:
mapnik::feature_ptr parse_feature(char const* beg, char const* end);
#if defined(MAPNIK_MEMORY_MAPPED_FILE)
using file_source_type = boost::interprocess::ibufferstream;
mapnik::mapped_region_ptr mapped_region_;
#else
using file_ptr = std::unique_ptr<std::FILE, int (*)(std::FILE*)>;
file_ptr file_;
#endif
char separator_;
char quote_;
std::vector<std::string> const& headers_;
array_type const index_array_;
array_type::const_iterator index_itr_;
array_type::const_iterator index_end_;
mapnik::context_ptr ctx_;
mapnik::value_integer feature_id_ = 0;
locator_type const& locator_;
mapnik::transcoder tr_;
};
#endif // CSV_FEATURESET_HPP
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