/**
* Tell the Collector that you are interested in this relation
* and want it kept until all members have been assembled and
* it is handed back to you.
*
* The relation is copied and stored in a buffer inside the
* collector.
*/
void add_relation(const osmium::Relation& relation) {
const size_t offset = m_relations_buffer.committed();
m_relations_buffer.add_item(relation);
RelationMeta relation_meta(offset);
int n = 0;
for (auto& member : m_relations_buffer.get<osmium::Relation>(offset).members()) {
if (static_cast<TCollector*>(this)->keep_member(relation_meta, member)) {
member_meta(member.type()).emplace_back(member.ref(), m_relations.size(), n);
relation_meta.increment_need_members();
} else {
member.ref(0); // set member id to zero to indicate we are not interested
}
++n;
}
assert(offset == m_relations_buffer.committed());
if (relation_meta.has_all_members()) {
m_relations_buffer.rollback();
} else {
m_relations_buffer.commit();
m_relations.push_back(std::move(relation_meta));
// std::cerr << "added relation id=" << relation.id() << "\n";
}
}
/**
* Parses one line in OPL format. The line must not have a newline
* character at the end. Buffer.commit() is called automatically if the
* write succeeded.
*
* @param data Line must be in this zero-delimited string.
* @param buffer Result will be written to this buffer.
*
* @returns true if an entity was parsed, false otherwise (for instance
* when the line is empty).
* @throws osmium::opl_error If the parsing fails.
*/
inline bool opl_parse(const char* data, osmium::memory::Buffer& buffer) {
try {
const bool wrote_something = osmium::io::detail::opl_parse_line(0, data, buffer);
buffer.commit();
return wrote_something;
} catch (const osmium::opl_error&) {
buffer.rollback();
throw;
}
}
/**
* Assemble an area from the given way.
* The resulting area is put into the out_buffer.
*
* @returns false if there was some kind of error building the
* area, true otherwise.
*/
bool operator()(const osmium::Way& way, osmium::memory::Buffer& out_buffer) {
if (!config().create_way_polygons) {
return true;
}
if (config().problem_reporter) {
config().problem_reporter->set_object(osmium::item_type::way, way.id());
config().problem_reporter->set_nodes(way.nodes().size());
}
// Ignore (but count) ways without segments.
if (way.nodes().size() < 2) {
++stats().short_ways;
return false;
}
if (!way.ends_have_same_id()) {
++stats().duplicate_nodes;
if (config().problem_reporter) {
config().problem_reporter->report_duplicate_node(way.nodes().front().ref(), way.nodes().back().ref(), way.nodes().front().location());
}
}
++stats().from_ways;
stats().invalid_locations = segment_list().extract_segments_from_way(config().problem_reporter,
stats().duplicate_nodes,
way);
if (!config().ignore_invalid_locations && stats().invalid_locations > 0) {
return false;
}
if (config().debug_level > 0) {
std::cerr << "\nAssembling way " << way.id() << " containing " << segment_list().size() << " nodes\n";
}
// Now create the Area object and add the attributes and tags
// from the way.
const bool okay = create_area(out_buffer, way);
if (okay) {
out_buffer.commit();
} else {
out_buffer.rollback();
}
if (debug()) {
std::cerr << "Done: " << stats() << "\n";
}
return okay;
}
/**
* Assemble an area from the given relation and its members.
* The resulting area is put into the out_buffer.
*
* @returns false if there was some kind of error building the
* area(s), true otherwise.
*/
bool operator()(const osmium::Relation& relation, const std::vector<const osmium::Way*>& members, osmium::memory::Buffer& out_buffer) {
if (!config().create_new_style_polygons) {
return true;
}
assert(relation.cmembers().size() >= members.size());
if (config().problem_reporter) {
config().problem_reporter->set_object(osmium::item_type::relation, relation.id());
}
if (relation.members().empty()) {
++stats().no_way_in_mp_relation;
return false;
}
++stats().from_relations;
stats().invalid_locations = segment_list().extract_segments_from_ways(config().problem_reporter,
stats().duplicate_nodes,
stats().duplicate_ways,
relation,
members);
if (!config().ignore_invalid_locations && stats().invalid_locations > 0) {
return false;
}
stats().member_ways = members.size();
if (stats().member_ways == 1) {
++stats().single_way_in_mp_relation;
}
if (config().debug_level > 0) {
std::cerr << "\nAssembling relation " << relation.id() << " containing " << members.size() << " way members with " << segment_list().size() << " nodes\n";
}
// Now create the Area object and add the attributes and tags
// from the relation.
bool okay = create_area(out_buffer, relation, members);
if (okay) {
out_buffer.commit();
} else {
out_buffer.rollback();
}
return okay;
}