tag.hpp
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#ifndef OSMIUM_OSM_TAG_HPP
#define OSMIUM_OSM_TAG_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 <algorithm>
#include <cstddef>
#include <cstring>
#include <iosfwd>
#include <iterator>
#include <osmium/memory/collection.hpp>
#include <osmium/memory/item.hpp>
#include <osmium/osm/item_type.hpp>
namespace osmium {
class Tag : public osmium::memory::detail::ItemHelper {
Tag(const Tag&) = delete;
Tag(Tag&&) = delete;
Tag& operator=(const Tag&) = delete;
Tag& operator=(Tag&&) = delete;
template <typename TMember>
friend class osmium::memory::CollectionIterator;
static unsigned char* after_null(unsigned char* ptr) {
return reinterpret_cast<unsigned char*>(std::strchr(reinterpret_cast<char*>(ptr), 0) + 1);
}
static const unsigned char* after_null(const unsigned char* ptr) {
return reinterpret_cast<const unsigned char*>(std::strchr(reinterpret_cast<const char*>(ptr), 0) + 1);
}
unsigned char* next() {
return after_null(after_null(data()));
}
const unsigned char* next() const {
return after_null(after_null(data()));
}
public:
static constexpr item_type collection_type = item_type::tag_list;
const char* key() const noexcept {
return reinterpret_cast<const char*>(data());
}
const char* value() const {
return reinterpret_cast<const char*>(after_null(data()));
}
}; // class Tag
inline bool operator==(const Tag& a, const Tag& b) {
return !std::strcmp(a.key(), b.key()) && !strcmp(a.value(), b.value());
}
inline bool operator<(const Tag& a, const Tag& b) {
return (!std::strcmp(a.key(), b.key()) && (std::strcmp(a.value(), b.value()) < 0)) || (std::strcmp(a.key(), b.key()) < 0);
}
template <typename TChar, typename TTraits>
inline std::basic_ostream<TChar, TTraits>& operator<<(std::basic_ostream<TChar, TTraits>& out, const Tag& tag) {
return out << tag.key() << '=' << tag.value();
}
class TagList : public osmium::memory::Collection<Tag, osmium::item_type::tag_list> {
public:
typedef size_t size_type;
TagList() :
osmium::memory::Collection<Tag, osmium::item_type::tag_list>() {
}
size_type size() const noexcept {
return static_cast<size_type>(std::distance(begin(), end()));
}
const char* get_value_by_key(const char* key, const char* default_value = nullptr) const noexcept {
auto result = std::find_if(cbegin(), cend(), [key](const Tag& tag) {
return !strcmp(tag.key(), key);
});
if (result == cend()) {
return default_value;
}
return result->value();
}
const char* operator[](const char* key) const noexcept {
return get_value_by_key(key);
}
}; // class TagList
} // namespace osmium
#endif // OSMIUM_OSM_TAG_HPP
osmium::Tag
Definition: tag.hpp:48
collection.hpp
osmium::memory::CollectionIterator
Definition: collection.hpp:47
osmium::TagList
Definition: tag.hpp:105
osmium::item_type::tag_list
osmium::Tag::operator=
Tag & operator=(const Tag &)=delete
osmium::Tag::value
const char * value() const
Definition: tag.hpp:83
osmium::Tag::after_null
static unsigned char * after_null(unsigned char *ptr)
Definition: tag.hpp:59
osmium::operator==
constexpr bool operator==(const Box &lhs, const Box &rhs) noexcept
Definition: box.hpp:222
osmium::item_type
item_type
Definition: item_type.hpp:43
osmium::TagList::size_type
size_t size_type
Definition: tag.hpp:109
osmium::geom::haversine::distance
double distance(const osmium::geom::Coordinates &c1, const osmium::geom::Coordinates &c2)
Definition: haversine.hpp:64
osmium::Tag::next
const unsigned char * next() const
Definition: tag.hpp:71
item_type.hpp
osmium::Tag::Tag
Tag(const Tag &)=delete
osmium::operator<
bool operator<(const Changeset &lhs, const Changeset &rhs)
Definition: changeset.hpp:438
osmium
Namespace for everything in the Osmium library.
Definition: assembler.hpp:59
osmium::TagList::TagList
TagList()
Definition: tag.hpp:111
osmium::memory::Collection
Definition: collection.hpp:111
std::end
osmium::io::InputIterator< osmium::io::Reader > end(osmium::io::Reader &)
Definition: reader_iterator.hpp:45
osmium::memory::CollectionIterator::data
unsigned char * data() const noexcept
Definition: collection.hpp:85
item.hpp
osmium::Tag::collection_type
static constexpr item_type collection_type
Definition: tag.hpp:77
osmium::Tag::key
const char * key() const noexcept
Definition: tag.hpp:79
std::begin
osmium::io::InputIterator< osmium::io::Reader > begin(osmium::io::Reader &reader)
Definition: reader_iterator.hpp:41
osmium::TagList::get_value_by_key
const char * get_value_by_key(const char *key, const char *default_value=nullptr) const noexcept
Definition: tag.hpp:119
osmium::Tag::next
unsigned char * next()
Definition: tag.hpp:67
osmium::TagList::size
size_type size() const noexcept
Definition: tag.hpp:115
osmium::TagList::operator[]
const char * operator[](const char *key) const noexcept
Definition: tag.hpp:129
osmium::Tag::after_null
static const unsigned char * after_null(const unsigned char *ptr)
Definition: tag.hpp:63