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flex_reader.hpp
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#ifndef OSMIUM_EXPERIMENTAL_FLEX_READER_HPP
#define OSMIUM_EXPERIMENTAL_FLEX_READER_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.hpp>
#include <osmium/area/multipolygon_collector.hpp>
#include <osmium/handler/node_locations_for_ways.hpp> // IWYU pragma: keep
#include <osmium/io/file.hpp>
#include <osmium/io/header.hpp>
#include <osmium/io/reader.hpp>
#include <osmium/memory/buffer.hpp>
#include <osmium/osm/entity_bits.hpp>
#include <osmium/visitor.hpp>
#include <string>
#include <utility>
#include <vector>
namespace osmium {
namespace experimental {
template <typename TLocationHandler>
class FlexReader {
bool m_with_areas;
osmium::osm_entity_bits::type m_entities;
TLocationHandler& m_location_handler;
osmium::io::Reader m_reader;
osmium::area::Assembler::config_type m_assembler_config;
osmium::area::MultipolygonCollector<osmium::area::Assembler> m_collector;
public:
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_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();
}
}
explicit FlexReader(const std::string& filename, TLocationHandler& location_handler, osmium::osm_entity_bits::type entities = osmium::osm_entity_bits::nwr) :
FlexReader(osmium::io::File{filename}, location_handler, entities) {
}
explicit FlexReader(const char* filename, TLocationHandler& location_handler, osmium::osm_entity_bits::type entities = osmium::osm_entity_bits::nwr) :
FlexReader(osmium::io::File{filename}, location_handler, entities) {
}
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;
}
osmium::io::Header header() {
return m_reader.header();
}
void close() {
m_reader.close();
}
bool eof() const {
return m_reader.eof();
}
const osmium::area::MultipolygonCollector<osmium::area::Assembler>& collector() const {
return m_collector;
}
}; // class FlexReader
} // namespace experimental
} // namespace osmium
#endif // OSMIUM_EXPERIMENTAL_FLEX_READER_HPP
assembler.hpp
buffer.hpp
osmium::area::MultipolygonCollector
Definition multipolygon_collector.hpp:77
osmium::experimental::FlexReader::m_with_areas
bool m_with_areas
Definition flex_reader.hpp:60
osmium::experimental::FlexReader::collector
const osmium::area::MultipolygonCollector< osmium::area::Assembler > & collector() const
Definition flex_reader.hpp:127
osmium::experimental::FlexReader::header
osmium::io::Header header()
Definition flex_reader.hpp:115
osmium::experimental::FlexReader::m_assembler_config
osmium::area::Assembler::config_type m_assembler_config
Definition flex_reader.hpp:66
osmium::experimental::FlexReader::read
osmium::memory::Buffer read()
Definition flex_reader.hpp:94
osmium::experimental::FlexReader::m_reader
osmium::io::Reader m_reader
Definition flex_reader.hpp:65
osmium::experimental::FlexReader::m_collector
osmium::area::MultipolygonCollector< osmium::area::Assembler > m_collector
Definition flex_reader.hpp:67
osmium::experimental::FlexReader::m_location_handler
TLocationHandler & m_location_handler
Definition flex_reader.hpp:63
osmium::experimental::FlexReader::close
void close()
Definition flex_reader.hpp:119
osmium::experimental::FlexReader::eof
bool eof() const
Definition flex_reader.hpp:123
osmium::experimental::FlexReader::FlexReader
FlexReader(const osmium::io::File &file, TLocationHandler &location_handler, osmium::osm_entity_bits::type entities=osmium::osm_entity_bits::nwr)
Definition flex_reader.hpp:71
osmium::experimental::FlexReader::FlexReader
FlexReader(const char *filename, TLocationHandler &location_handler, osmium::osm_entity_bits::type entities=osmium::osm_entity_bits::nwr)
Definition flex_reader.hpp:90
osmium::experimental::FlexReader::m_entities
osmium::osm_entity_bits::type m_entities
Definition flex_reader.hpp:61
osmium::experimental::FlexReader::FlexReader
FlexReader(const std::string &filename, TLocationHandler &location_handler, osmium::osm_entity_bits::type entities=osmium::osm_entity_bits::nwr)
Definition flex_reader.hpp:86
osmium::io::File
Definition file.hpp:72
osmium::io::Header
Definition header.hpp:68
osmium::io::Reader
Definition reader.hpp:90
osmium::io::Reader::close
void close()
Definition reader.hpp:384
entity_bits.hpp
header.hpp
file.hpp
multipolygon_collector.hpp
osmium::area
Code related to the building of areas (multipolygons) from relations.
Definition assembler.hpp:55
osmium::experimental
Experimental code that is not "officially" supported.
Definition flex_reader.hpp:55
osmium::io
Everything related to input and output of OSM data.
Definition bzip2_compression.hpp:86
osmium::osm_entity_bits
Bit field for OSM entity types.
Definition entity_bits.hpp:46
osmium::osm_entity_bits::type
type
Definition entity_bits.hpp:65
osmium::osm_entity_bits::node
@ node
Definition entity_bits.hpp:70
osmium::osm_entity_bits::nwr
@ nwr
node, way, or relation object
Definition entity_bits.hpp:76
osmium::osm_entity_bits::relation
@ relation
Definition entity_bits.hpp:73
osmium::osm_entity_bits::way
@ way
Definition entity_bits.hpp:71
osmium
Namespace for everything in the Osmium library.
Definition assembler.hpp:53
osmium::apply
void apply(TIterator it, TIterator end, THandlers &&... handlers)
Definition visitor.hpp:326
osmium::item_type::node
@ node
Definition item_type.hpp:48
osmium::item_type::way
@ way
Definition item_type.hpp:49
node_locations_for_ways.hpp
reader.hpp
visitor.hpp