void apply_with_area(osmium::io::Reader &r,
osmium::area::MultipolygonCollector<osmium::area::Assembler> &collector) {
IDX index;
osmium::handler::NodeLocationsForWays<IDX> location_handler(index);
location_handler.ignore_errors();
osmium::apply(r, location_handler, *this,
collector.handler([this](const osmium::memory::Buffer& area_buffer) {
osmium::apply(area_buffer, *this);
})
);
}
explicit FlexReader(const osmium::io::File& file, TLocationHandler& location_handler, osmium::osm_entity_bits::type entities = osmium::osm_entity_bits::nwr) :
m_with_areas((entities & osmium::osm_entity_bits::area) != 0),
m_entities((entities & ~osmium::osm_entity_bits::area) | (m_with_areas ? osmium::osm_entity_bits::node | osmium::osm_entity_bits::way : osmium::osm_entity_bits::nothing)),
m_location_handler(location_handler),
m_reader(file, m_entities),
m_assembler_config(),
m_collector(m_assembler_config)
{
m_location_handler.ignore_errors();
if (m_with_areas) {
osmium::io::Reader reader(file, osmium::osm_entity_bits::relation);
m_collector.read_relations(reader);
reader.close();
}
}
osmium::memory::Buffer read() {
osmium::memory::Buffer buffer = m_reader.read();
if (buffer) {
if (m_with_areas) {
std::vector<osmium::memory::Buffer> area_buffers;
osmium::apply(buffer, m_location_handler, m_collector.handler([&area_buffers](osmium::memory::Buffer&& area_buffer) {
area_buffers.push_back(std::move(area_buffer));
}));
for (const osmium::memory::Buffer& b : area_buffers) {
buffer.add_buffer(b);
buffer.commit();
}
} else if (m_entities & (osmium::osm_entity_bits::node | osmium::osm_entity_bits::way)) {
osmium::apply(buffer, m_location_handler);
}
}
return buffer;
}