/***************************************************************************** * * This file is part of Mapnik (c++ mapping toolkit) * * Copyright (C) 2021 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_INDEX_FEATURESET_HPP #define CSV_INDEX_FEATURESET_HPP #include <mapnik/feature.hpp> #include <mapnik/unicode.hpp> #include <mapnik/geom_util.hpp> #include <mapnik/util/spatial_index.hpp> #include "csv_utils.hpp" #include "csv_datasource.hpp" #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_index_featureset : public mapnik::Featureset { using value_type = mapnik::util::index_record; using locator_type = csv_utils::geometry_column_locator; public: csv_index_featureset(std::string const& filename, mapnik::bounding_box_filter<float> const& filter, locator_type const& locator, char separator, char quote, std::vector<std::string> const& headers, mapnik::context_ptr const& ctx); ~csv_index_featureset(); mapnik::feature_ptr next(); private: mapnik::feature_ptr parse_feature(char const* beg, char const* end); char separator_; char quote_; std::vector<std::string> headers_; mapnik::context_ptr ctx_; mapnik::value_integer feature_id_ = 0; locator_type const& locator_; mapnik::transcoder tr_; #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 std::vector<value_type> positions_; std::vector<value_type>::iterator itr_; }; #endif // CSV_INDEX_FEATURESET_HPP