Nominatim/test/scenes/bin/osm2wkt.cc
2017-08-19 19:37:06 +02:00

142 lines
4.1 KiB
C++

// The code in this file is released into the Public Domain.
#include <iostream>
#include <fstream>
#include <string>
#include <unordered_map>
#include <osmium/area/assembler.hpp>
#include <osmium/area/multipolygon_manager.hpp>
#include <osmium/geom/wkt.hpp>
#include <osmium/handler.hpp>
#include <osmium/handler/node_locations_for_ways.hpp>
#include <osmium/io/any_input.hpp>
#include <osmium/visitor.hpp>
#include <osmium/object_pointer_collection.hpp>
#include <osmium/index/map/sparse_mem_array.hpp>
#include <osmium/osm/object_comparisons.hpp>
typedef osmium::index::map::SparseMemArray<osmium::unsigned_object_id_type, osmium::Location> index_type;
typedef osmium::handler::NodeLocationsForWays<index_type, index_type> location_handler_type;
struct AbsoluteIdHandler : public osmium::handler::Handler {
enum { BASE = 100000000 };
void node(osmium::Node& o) {
if (o.id() < 0)
o.set_id(BASE-o.id());
}
void way(osmium::Way& o) {
if (o.id() < 0)
o.set_id(BASE-o.id());
for (osmium::NodeRef &n: o.nodes())
if (n.ref() < 0)
n.set_ref(BASE-n.ref());
}
void relation(osmium::Relation& o) {
if (o.id() < 0)
o.set_id(BASE-o.id());
for (auto &m : o.members())
if (m.ref() < 0)
m.set_ref(BASE-m.ref());
}
};
class ExportToWKTHandler : public osmium::handler::Handler {
osmium::geom::WKTFactory<> m_factory;
std::unordered_map<std::string, std::ofstream> m_files;
public:
void node(const osmium::Node& node) {
print_geometry(node.tags(), m_factory.create_point(node));
}
void way(const osmium::Way& way) {
if (!way.nodes().empty()
&& (!way.is_closed() || !way.tags().get_value_by_key("area")))
print_geometry(way.tags(), m_factory.create_linestring(way));
}
void area(const osmium::Area& area) {
if (!area.from_way() || area.tags().get_value_by_key("area"))
print_geometry(area.tags(), m_factory.create_multipolygon(area));
}
void close() {
for (auto& fd : m_files)
fd.second.close();
}
private:
void print_geometry(const osmium::TagList& tags, const std::string& wkt) {
const char* scenario = tags.get_value_by_key("test:section");
const char* id = tags.get_value_by_key("test:id");
if (scenario && id) {
auto& fd = m_files[std::string(scenario)];
if (!fd.is_open())
fd.open(std::string(scenario) + ".wkt");
fd << id << " | " << wkt << "\n";
}
}
}; // class ExportToWKTHandler
int main(int argc, char* argv[]) {
if (argc != 2) {
std::cerr << "Usage: " << argv[0] << " OSMFILE\n";
exit(1);
}
osmium::io::File input_file{argv[1]};
// need to sort the data first and make ids absolute
std::cerr << "Read file...\n";
osmium::io::Reader reader{input_file};
std::vector<osmium::memory::Buffer> changes;
osmium::ObjectPointerCollection objects;
AbsoluteIdHandler abshandler;
while (osmium::memory::Buffer buffer = reader.read()) {
osmium::apply(buffer, abshandler, objects);
changes.push_back(std::move(buffer));
}
reader.close();
std::cerr << "Sort file...\n";
objects.sort(osmium::object_order_type_id_version());
osmium::area::Assembler::config_type assembler_config;
osmium::area::MultipolygonManager<osmium::area::Assembler> mp_manager{assembler_config};
std::cerr << "Pass 1...\n";
index_type index_pos;
index_type index_neg;
location_handler_type location_handler(index_pos, index_neg);
ExportToWKTHandler export_handler;
osmium::apply(objects.begin(), objects.end(), location_handler,
export_handler, mp_manager);
mp_manager.prepare_for_lookup();
std::cerr << "Pass 1 done\n";
std::cerr << "Pass 2...\n";
osmium::apply(objects.cbegin(), objects.cend(), mp_manager.handler([&export_handler](osmium::memory::Buffer&& buffer) {
osmium::apply(buffer, export_handler);
}));
export_handler.close();
std::cerr << "Pass 2 done\n";
}