/usr/include/osmium/input.hpp is in libosmium-dev 0.0~20160124-b30afd3-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#define OSMIUM_INPUT_HPP
/*
Copyright 2012 Jochen Topf <jochen@topf.org> and others (see README).
This file is part of Osmium (https://github.com/joto/osmium).
Osmium is free software: you can redistribute it and/or modify it under the
terms of the GNU Lesser General Public License or (at your option) the GNU
General Public License as published by the Free Software Foundation, either
version 3 of the Licenses, or (at your option) any later version.
Osmium is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE. See the GNU Lesser General Public License and the GNU
General Public License for more details.
You should have received a copy of the Licenses along with Osmium. If not, see
<http://www.gnu.org/licenses/>.
*/
#include <boost/utility.hpp>
#include <osmium/smart_ptr.hpp>
#include <osmium/osmfile.hpp>
#include <osmium/handler.hpp>
namespace Osmium {
/**
* @brief %Input classes parse %OSM files and call a handler on the data they read.
*/
namespace Input {
/**
* Virtual base class for all input classes.
*
* The THandler template parameter of this class (and child classes)
* names a policy class on which methods will be called. The class
* should implement one or more of the following functions:
*
* - init(Osmium::OSM::Meta&)
* - before_nodes/ways/relations()
* - node/way/relation(const shared_ptr<Osmium::OSM::Node/Way/Relation>&)
* - after_nodes/ways/relations()
* - final()
* - area(Osmium::OSM::Area*)
*
* init() will be called before all others, final()
* after all others.
*
* For every object node(), way(), or
* relation() will be called, respectively.
*
* When there are several objects of the same type in a row the
* before_*() function will be called before them and the
* after_*() function after them. If your input file is
* sorted as OSM files normally are, i.e. all nodes, then all ways,
* then all relations, this will call before_nodes() once,
* then for all the nodes node(), then after_nodes(),
* then before_ways(), and so on.
* This will also work properly if the input file contains, say, first
* all relations, than all ways and then all nodes.
*
* But if you have nodes, ways, and relations intermixed in an input
* file these handlers will probably not called in a useful way for you.
* You can use osmosis --sort to sort your input file first.
*
* The method area() is special. It will only be called if
* you have the multipolygon handler before your handler. There are no
* before/after_areas() methods. Use init() and
* final() instead.
*/
template <class THandler>
class Base : boost::noncopyable {
public:
virtual ~Base() {
}
/**
* Parse an OSM input file. This is a pure virtual function,
* it must be overwritten in a child class of Osmium::Input::Base.
*/
virtual void parse() = 0;
protected:
Base(const Osmium::OSMFile& file,
THandler& handler) :
m_last_object_type(UNKNOWN),
m_file(file),
m_handler(handler),
m_meta(),
m_node(),
m_way(),
m_relation() {
m_meta.has_multiple_object_versions(m_file.has_multiple_object_versions());
m_file.open_for_input();
}
void call_after_and_before_on_handler(osm_object_type_t current_object_type) {
if (current_object_type != m_last_object_type) {
switch (m_last_object_type) {
case UNKNOWN:
m_handler.init(m_meta);
break;
case NODE:
m_handler.after_nodes();
break;
case WAY:
m_handler.after_ways();
break;
case RELATION:
m_handler.after_relations();
break;
default:
break;
}
switch (current_object_type) {
case NODE:
m_handler.before_nodes();
break;
case WAY:
m_handler.before_ways();
break;
case RELATION:
m_handler.before_relations();
break;
default:
break;
}
m_last_object_type = current_object_type;
}
}
void call_node_on_handler() const {
m_handler.node(m_node);
}
void call_way_on_handler() const {
m_handler.way(m_way);
}
void call_relation_on_handler() const {
m_handler.relation(m_relation);
}
void call_final_on_handler() const {
m_handler.final();
}
Osmium::OSM::Meta& meta() {
return m_meta;
}
int fd() const {
return m_file.fd();
}
const Osmium::OSMFile& file() const {
return m_file;
}
/*
The following methods prepare the m_node/way/relation member
variable for use. If it is empty or in use by somebody other
than this parser, a new object will be allocated. If it not is
use, it will be reset to it's pristine state by calling the
destructor directly and then placement new. This gets around a
memory deallocation and re-allocation which was timed to slow
down the program noticably.
*/
Osmium::OSM::Node& prepare_node() {
if (m_node && m_node.unique()) {
m_node->~Node();
new (m_node.get()) Osmium::OSM::Node();
} else {
m_node = make_shared<Osmium::OSM::Node>();
}
return *m_node;
}
Osmium::OSM::Way& prepare_way() {
if (m_way && m_way.unique()) {
m_way->~Way();
new (m_way.get()) Osmium::OSM::Way(2000);
} else {
m_way = make_shared<Osmium::OSM::Way>(2000);
}
return *m_way;
}
Osmium::OSM::Relation& prepare_relation() {
if (m_relation && m_relation.unique()) {
m_relation->~Relation();
new (m_relation.get()) Osmium::OSM::Relation();
} else {
m_relation = make_shared<Osmium::OSM::Relation>();
}
return *m_relation;
}
private:
/**
* The last object type we read (before the current one).
* Used to properly call before and after methods.
*/
osm_object_type_t m_last_object_type;
/**
* The OSMFile we opened this file with.
*/
Osmium::OSMFile m_file;
/**
* Handler we will call callbacks on.
*/
THandler& m_handler;
Osmium::OSM::Meta m_meta;
protected:
shared_ptr<Osmium::OSM::Node> m_node;
shared_ptr<Osmium::OSM::Way> m_way;
shared_ptr<Osmium::OSM::Relation> m_relation;
}; // class Base
} // namespace Input
} // namespace Osmium
#endif // OSMIUM_INPUT_HPP
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