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assembler_legacy.hpp
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#ifndef OSMIUM_AREA_ASSEMBLER_LEGACY_HPP
#define OSMIUM_AREA_ASSEMBLER_LEGACY_HPP
/*
This file is part of Osmium (https://osmcode.org/libosmium).
Copyright 2013-2026 Jochen Topf <jochen@topf.org> and others (see README).
Boost Software License - Version 1.0 - August 17th, 2003
Permission is hereby granted, free of charge, to any person or organization
obtaining a copy of the software and accompanying documentation covered by
this license (the "Software") to use, reproduce, display, distribute,
execute, and transmit the Software, and to prepare derivative works of the
Software, and to permit third-parties to whom the Software is furnished to
do so, all subject to the following:
The copyright notices in the Software and this entire statement, including
the above license grant, this restriction and the following disclaimer,
must be included in all copies of the Software, in whole or in part, and
all derivative works of the Software, unless such copies or derivative
works are solely in the form of machine-executable object code generated by
a source language processor.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
*/
#include <osmium/area/assembler_config.hpp>
#include <osmium/area/detail/basic_assembler_with_tags.hpp>
#include <osmium/area/detail/proto_ring.hpp>
#include <osmium/area/detail/segment_list.hpp>
#include <osmium/area/problem_reporter.hpp>
#include <osmium/area/stats.hpp>
#include <osmium/builder/osm_object_builder.hpp>
#include <osmium/memory/buffer.hpp>
#include <osmium/memory/collection.hpp>
#include <osmium/osm/area.hpp>
#include <osmium/osm/item_type.hpp>
#include <osmium/osm/node_ref.hpp>
#include <osmium/osm/relation.hpp>
#include <osmium/osm/tag.hpp>
#include <osmium/osm/way.hpp>
#include <osmium/tags/filter.hpp>
#include <algorithm>
#include <cassert>
#include <cstring>
#include <functional>
#include <iostream>
#include <iterator>
#include <map>
#include <set>
#include <string>
#include <utility>
#include <vector>
namespace osmium {
namespace area {
class AssemblerLegacy : public detail::BasicAssemblerWithTags {
void add_common_tags(osmium::builder::TagListBuilder& tl_builder, const std::set<const osmium::Way*>& ways) const {
std::map<std::string, std::size_t> counter;
for (const osmium::Way* way : ways) {
for (const auto& tag : way->tags()) {
std::string kv{tag.key()};
kv.append(1, '\0');
kv.append(tag.value());
++counter[kv];
}
}
const std::size_t num_ways = ways.size();
for (const auto& t_c : counter) {
if (debug()) {
std::cerr << " tag " << t_c.first << " is used " << t_c.second << " times in " << num_ways << " ways\n";
}
if (t_c.second == num_ways) {
const std::size_t len = std::strlen(t_c.first.c_str());
tl_builder.add_tag(t_c.first.c_str(), t_c.first.c_str() + len + 1);
}
}
}
struct MPFilter : public osmium::tags::KeyFilter {
MPFilter() : osmium::tags::KeyFilter(true) {
add(false, "type");
add(false, "created_by");
add(false, "source");
add(false, "note");
add(false, "test:id");
add(false, "test:section");
}
}; // struct MPFilter
static const MPFilter& filter() noexcept {
static const MPFilter filter;
return filter;
}
void add_tags_to_area(osmium::builder::AreaBuilder& builder, const osmium::Relation& relation) {
const auto count = std::count_if(relation.tags().cbegin(), relation.tags().cend(), std::cref(filter()));
if (debug()) {
std::cerr << " found " << count << " tags on relation (without ignored ones)\n";
}
if (count > 0) {
if (debug()) {
std::cerr << " use tags from relation\n";
}
if (config().keep_type_tag) {
builder.add_item(relation.tags());
} else {
copy_tags_without_type(builder, relation.tags());
}
} else {
++stats().no_tags_on_relation;
if (debug()) {
std::cerr << " use tags from outer ways\n";
}
std::set<const osmium::Way*> ways;
for (const auto& ring : rings()) {
if (ring.is_outer()) {
ring.get_ways(ways);
}
}
if (ways.size() == 1) {
if (debug()) {
std::cerr << " only one outer way\n";
}
builder.add_item((*ways.cbegin())->tags());
} else {
if (debug()) {
std::cerr << " multiple outer ways, get common tags\n";
}
osmium::builder::TagListBuilder tl_builder{builder};
add_common_tags(tl_builder, ways);
}
}
}
bool create_area(osmium::memory::Buffer& out_buffer, const osmium::Way& way) {
osmium::builder::AreaBuilder builder{out_buffer};
builder.initialize_from_object(way);
const bool area_okay = create_rings();
if (area_okay || config().create_empty_areas) {
builder.add_item(way.tags());
}
if (area_okay) {
add_rings_to_area(builder);
}
if (report_ways()) {
config().problem_reporter->report_way(way);
}
return area_okay || config().create_empty_areas;
}
bool create_area(osmium::memory::Buffer& out_buffer, const osmium::Relation& relation, const std::vector<const osmium::Way*>& members) {
set_num_members(members.size());
osmium::builder::AreaBuilder builder{out_buffer};
builder.initialize_from_object(relation);
const bool area_okay = create_rings();
if (area_okay || config().create_empty_areas) {
add_tags_to_area(builder, relation);
}
if (area_okay) {
add_rings_to_area(builder);
}
if (report_ways()) {
for (const osmium::Way* way : members) {
config().problem_reporter->report_way(*way);
}
}
return area_okay || config().create_empty_areas;
}
public:
explicit AssemblerLegacy(const config_type& config) :
detail::BasicAssemblerWithTags(config) {
}
bool operator()(const osmium::Way& way, osmium::memory::Buffer& out_buffer) {
if (!config().create_way_polygons) {
return true;
}
if (way.tags().has_tag("area", "no")) {
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;
}
bool operator()(const osmium::Relation& relation, const std::vector<const osmium::Way*>& members, osmium::memory::Buffer& out_buffer) {
assert(relation.members().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";
}
const std::size_t area_offset = out_buffer.committed();
// Now create the Area object and add the attributes and tags
// from the relation.
bool okay = create_area(out_buffer, relation, members);
if (okay) {
if ((config().create_new_style_polygons && stats().no_tags_on_relation == 0) ||
(config().create_old_style_polygons && stats().no_tags_on_relation != 0)) {
out_buffer.commit();
} else {
out_buffer.rollback();
}
} else {
out_buffer.rollback();
}
const osmium::TagList& area_tags = out_buffer.get<osmium::Area>(area_offset).tags(); // tags of the area we just built
// Find all closed ways that are inner rings and check their
// tags. If they are not the same as the tags of the area we
// just built, add them to a list and later build areas for
// them, too.
std::vector<const osmium::Way*> ways_that_should_be_areas;
if (stats().wrong_role == 0) {
detail::for_each_member(relation, members, [this, &ways_that_should_be_areas, &area_tags](const osmium::RelationMember& member, const osmium::Way& way) {
if (!std::strcmp(member.role(), "inner")) {
if (!way.nodes().empty() && way.is_closed() && !way.tags().empty()) {
const auto d = std::count_if(way.tags().cbegin(), way.tags().cend(), std::cref(filter()));
if (d > 0) {
const osmium::tags::KeyFilter::iterator way_fi_begin(std::cref(filter()), way.tags().cbegin(), way.tags().cend());
const osmium::tags::KeyFilter::iterator way_fi_end(std::cref(filter()), way.tags().cend(), way.tags().cend());
const osmium::tags::KeyFilter::iterator area_fi_begin(std::cref(filter()), area_tags.cbegin(), area_tags.cend());
const osmium::tags::KeyFilter::iterator area_fi_end(std::cref(filter()), area_tags.cend(), area_tags.cend());
#ifdef __cpp_lib_robust_nonmodifying_seq_ops
if (!std::equal(way_fi_begin, way_fi_end, area_fi_begin, area_fi_end)) {
#else
if (d != std::distance(area_fi_begin, area_fi_end) || !std::equal(way_fi_begin, way_fi_end, area_fi_begin)) {
#endif
ways_that_should_be_areas.push_back(&way);
} else {
++stats().inner_with_same_tags;
if (config().problem_reporter) {
config().problem_reporter->report_inner_with_same_tags(way);
}
}
}
}
}
});
}
if (debug()) {
std::cerr << "Done: " << stats() << "\n";
}
// Now build areas for all ways found in the last step.
for (const osmium::Way* way : ways_that_should_be_areas) {
AssemblerLegacy assembler{config()};
if (!assembler(*way, out_buffer)) {
okay = false;
}
stats() += assembler.stats();
}
return okay;
}
}; // class AssemblerLegacy
} // namespace area
} // namespace osmium
#endif // OSMIUM_AREA_ASSEMBLER_LEGACY_HPP
area.hpp
assembler_config.hpp
buffer.hpp
osmium::Area
Definition area.hpp:125
osmium::RelationMember
Definition relation.hpp:56
osmium::RelationMember::role
const char * role() const noexcept
Definition relation.hpp:133
osmium::Relation
Definition relation.hpp:161
osmium::TagList
Definition tag.hpp:119
osmium::Way
Definition way.hpp:72
osmium::area::AssemblerLegacy::filter
static const MPFilter & filter() noexcept
Definition assembler_legacy.hpp:111
osmium::area::AssemblerLegacy::create_area
bool create_area(osmium::memory::Buffer &out_buffer, const osmium::Way &way)
Definition assembler_legacy.hpp:159
osmium::area::AssemblerLegacy::operator()
bool operator()(const osmium::Relation &relation, const std::vector< const osmium::Way * > &members, osmium::memory::Buffer &out_buffer)
Definition assembler_legacy.hpp:275
osmium::area::AssemblerLegacy::AssemblerLegacy
AssemblerLegacy(const config_type &config)
Definition assembler_legacy.hpp:202
osmium::area::AssemblerLegacy::operator()
bool operator()(const osmium::Way &way, osmium::memory::Buffer &out_buffer)
Definition assembler_legacy.hpp:213
osmium::area::AssemblerLegacy::add_common_tags
void add_common_tags(osmium::builder::TagListBuilder &tl_builder, const std::set< const osmium::Way * > &ways) const
Definition assembler_legacy.hpp:75
osmium::area::AssemblerLegacy::create_area
bool create_area(osmium::memory::Buffer &out_buffer, const osmium::Relation &relation, const std::vector< const osmium::Way * > &members)
Definition assembler_legacy.hpp:178
osmium::area::AssemblerLegacy::add_tags_to_area
void add_tags_to_area(osmium::builder::AreaBuilder &builder, const osmium::Relation &relation)
Definition assembler_legacy.hpp:116
osmium::builder::AreaBuilder
Definition osm_object_builder.hpp:594
osmium::builder::TagListBuilder
Definition osm_object_builder.hpp:72
osmium::builder::TagListBuilder::add_tag
void add_tag(const char *key, const char *value)
Definition osm_object_builder.hpp:102
osmium::memory::Collection::cend
const_iterator cend() const noexcept
Definition collection.hpp:233
osmium::memory::Collection::cbegin
const_iterator cbegin() const noexcept
Definition collection.hpp:229
osmium::tags::Filter< std::string >::iterator
osmium::memory::CollectionFilterIterator< filter_type, const osmium::Tag > iterator
Definition filter.hpp:127
osmium::tags::Filter< std::string >::add
Filter & add(bool result, const key_type &key, const value_type &value)
Definition filter.hpp:134
collection.hpp
filter.hpp
item_type.hpp
detail
Definition attr.hpp:342
osmium::area
Code related to the building of areas (multipolygons) from relations.
Definition assembler.hpp:55
osmium::builder
Classes for building OSM objects and other items in buffers.
Definition attr.hpp:62
osmium::config
Definition config.hpp:60
osmium::tags
Code related to working with OSM tags.
Definition filter.hpp:47
osmium::tags::KeyFilter
Filter< std::string > KeyFilter
Definition filter.hpp:177
osmium
Namespace for everything in the Osmium library.
Definition assembler.hpp:53
osmium::item_type::relation
@ relation
Definition item_type.hpp:50
osmium::item_type::way
@ way
Definition item_type.hpp:49
node_ref.hpp
osm_object_builder.hpp
problem_reporter.hpp
relation.hpp
stats.hpp
osmium::area::AssemblerLegacy::MPFilter
Definition assembler_legacy.hpp:98
osmium::area::AssemblerLegacy::MPFilter::MPFilter
MPFilter()
Definition assembler_legacy.hpp:100
tag.hpp
way.hpp