osrm-backend/third_party/libosmium/test/data-tests/testdata-overview.cpp

/* The code in this file is released into the Public Domain. */

#include <iostream>

#include <gdalcpp.hpp>

#include <osmium/index/map/sparse_mem_array.hpp>

#include <osmium/geom/ogr.hpp>
#include <osmium/handler.hpp>
#include <osmium/handler/node_locations_for_ways.hpp>
#include <osmium/io/xml_input.hpp>
#include <osmium/visitor.hpp>

typedef osmium::index::map::SparseMemArray<osmium::unsigned_object_id_type, osmium::Location> index_type;
typedef osmium::handler::NodeLocationsForWays<index_type> location_handler_type;

class TestOverviewHandler : public osmium::handler::Handler {

    gdalcpp::Layer m_layer_nodes;
    gdalcpp::Layer m_layer_labels;
    gdalcpp::Layer m_layer_ways;

    osmium::geom::OGRFactory<> m_factory;

public:

    explicit TestOverviewHandler(gdalcpp::Dataset& dataset) :
        m_layer_nodes(dataset, "nodes", wkbPoint),
        m_layer_labels(dataset, "labels", wkbPoint),
        m_layer_ways(dataset, "ways", wkbLineString) {

        m_layer_nodes.add_field("id", OFTReal, 10);

        m_layer_labels.add_field("id", OFTReal, 10);
        m_layer_labels.add_field("label", OFTString, 30);

        m_layer_ways.add_field("id", OFTReal, 10);
        m_layer_ways.add_field("test", OFTInteger, 3);
    }

    void node(const osmium::Node& node) {
        const char* label = node.tags().get_value_by_key("label");
        if (label) {
            gdalcpp::Feature feature(m_layer_labels, m_factory.create_point(node));
            feature.set_field("id", static_cast<double>(node.id()));
            feature.set_field("label", label);
            feature.add_to_layer();
        } else {
            gdalcpp::Feature feature(m_layer_nodes, m_factory.create_point(node));
            feature.set_field("id", static_cast<double>(node.id()));
            feature.add_to_layer();
        }
    }

    void way(const osmium::Way& way) {
        try {
            gdalcpp::Feature feature(m_layer_ways, m_factory.create_linestring(way));
            feature.set_field("id", static_cast<double>(way.id()));

            const char* test = way.tags().get_value_by_key("test");
            if (test) {
                feature.set_field("test", test);
            }

            feature.add_to_layer();
        } catch (osmium::geometry_error&) {
            std::cerr << "Ignoring illegal geometry for way " << way.id() << ".\n";
        }
    }

};

/* ================================================== */

int main(int argc, char* argv[]) {
    if (argc != 2) {
        std::cerr << "Usage: " << argv[0] << " INFILE\n";
        exit(1);
    }

    std::string output_format("SQLite");
    std::string input_filename(argv[1]);
    std::string output_filename("testdata-overview.db");
    ::unlink(output_filename.c_str());

    CPLSetConfigOption("OGR_SQLITE_SYNCHRONOUS", "FALSE");
    gdalcpp::Dataset dataset(output_format, output_filename, gdalcpp::SRS{}, { "SPATIALITE=TRUE" });

    osmium::io::Reader reader(input_filename);

    index_type index;
    location_handler_type location_handler(index);
    location_handler.ignore_errors();

    TestOverviewHandler handler(dataset);

    osmium::apply(reader, location_handler, handler);
    reader.close();
}