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 (http://osmcode.org/libosmium).
Copyright 2013-2016 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 <string>
#include <vector>
#include <osmium/area/assembler.hpp>
#include <osmium/area/multipolygon_collector.hpp>
#include <osmium/handler/node_locations_for_ways.hpp>
#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>
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_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();
}
}
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() {
return 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
osmium::io::Reader::read
osmium::memory::Buffer read()
Definition: reader.hpp:314
osmium::experimental::FlexReader::m_with_areas
bool m_with_areas
Definition: flex_reader.hpp:59
osmium::osm_entity_bits::type
type
Definition: entity_bits.hpp:60
multipolygon_collector.hpp
osmium::experimental::FlexReader::header
osmium::io::Header header()
Definition: flex_reader.hpp:115
entity_bits.hpp
osmium::experimental::FlexReader::m_location_handler
TLocationHandler & m_location_handler
Definition: flex_reader.hpp:62
osmium::area::AssemblerConfig
Definition: assembler.hpp:65
osmium::experimental::FlexReader::read
osmium::memory::Buffer read()
Definition: flex_reader.hpp:94
osmium::experimental::FlexReader::close
void close()
Definition: flex_reader.hpp:119
osmium::io::Reader::eof
bool eof() const
Definition: reader.hpp:349
osmium::apply
void apply(TIterator it, TIterator end, THandlers &...handlers)
Definition: visitor.hpp:234
assembler.hpp
file.hpp
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:70
osmium::io::File
Definition: file.hpp:74
osmium::osm_entity_bits::way
Definition: entity_bits.hpp:64
osmium::experimental::FlexReader::eof
bool eof() const
Definition: flex_reader.hpp:123
osmium::osm_entity_bits::nwr
node, way, or relation object
Definition: entity_bits.hpp:66
osmium
Namespace for everything in the Osmium library.
Definition: assembler.hpp:59
node_locations_for_ways.hpp
osmium::memory::Buffer::add_buffer
void add_buffer(const Buffer &buffer)
Definition: buffer.hpp:474
header.hpp
osmium::experimental::FlexReader::m_assembler_config
osmium::area::Assembler::config_type m_assembler_config
Definition: flex_reader.hpp:65
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::io::Reader
Definition: reader.hpp:76
osmium::experimental::FlexReader::m_collector
osmium::area::MultipolygonCollector< osmium::area::Assembler > m_collector
Definition: flex_reader.hpp:66
osmium::io::Reader::header
osmium::io::Header header()
Definition: reader.hpp:284
osmium::area::MultipolygonCollector< osmium::area::Assembler >
reader.hpp
osmium::memory::Buffer
Definition: buffer.hpp:97
osmium::osm_entity_bits::node
Definition: entity_bits.hpp:63
osmium::relations::Collector::handler
HandlerPass2 & handler(const callback_func_type &callback=nullptr)
Definition: collector.hpp:474
osmium::experimental::FlexReader::m_reader
osmium::io::Reader m_reader
Definition: flex_reader.hpp:64
buffer.hpp
osmium::osm_entity_bits::nothing
Definition: entity_bits.hpp:62
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::relations::Collector::read_relations
void read_relations(TIter begin, TIter end)
Definition: collector.hpp:491
osmium::osm_entity_bits::relation
Definition: entity_bits.hpp:65
osmium::io::Header
Definition: header.hpp:49
osmium::experimental::FlexReader::collector
const osmium::area::MultipolygonCollector< osmium::area::Assembler > & collector() const
Definition: flex_reader.hpp:127
osmium::experimental::FlexReader::m_entities
osmium::osm_entity_bits::type m_entities
Definition: flex_reader.hpp:60
visitor.hpp
osmium::io::Reader::close
void close()
Definition: reader.hpp:250
osmium::experimental::FlexReader
Definition: flex_reader.hpp:57
osmium::memory::Buffer::commit
size_t commit()
Definition: buffer.hpp:335