105 lines
3.9 KiB
C++
105 lines
3.9 KiB
C++
#ifndef OSMIUM_DIFF_VISITOR_HPP
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#define OSMIUM_DIFF_VISITOR_HPP
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/*
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This file is part of Osmium (https://osmcode.org/libosmium).
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Copyright 2013-2022 Jochen Topf <jochen@topf.org> and others (see README).
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Boost Software License - Version 1.0 - August 17th, 2003
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Permission is hereby granted, free of charge, to any person or organization
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obtaining a copy of the software and accompanying documentation covered by
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this license (the "Software") to use, reproduce, display, distribute,
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execute, and transmit the Software, and to prepare derivative works of the
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Software, and to permit third-parties to whom the Software is furnished to
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do so, all subject to the following:
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The copyright notices in the Software and this entire statement, including
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the above license grant, this restriction and the following disclaimer,
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must be included in all copies of the Software, in whole or in part, and
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all derivative works of the Software, unless such copies or derivative
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works are solely in the form of machine-executable object code generated by
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a source language processor.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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*/
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#include <osmium/diff_iterator.hpp>
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#include <osmium/io/input_iterator.hpp>
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#include <osmium/memory/buffer.hpp>
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#include <osmium/osm/diff_object.hpp>
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#include <osmium/osm/item_type.hpp>
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namespace osmium {
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namespace detail {
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template <typename THandler>
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inline void apply_diff_iterator_recurse(const osmium::DiffObject& diff, THandler& handler) {
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switch (diff.type()) {
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case osmium::item_type::node:
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handler.node(static_cast<const osmium::DiffNode&>(diff));
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break;
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case osmium::item_type::way:
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handler.way(static_cast<const osmium::DiffWay&>(diff));
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break;
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case osmium::item_type::relation:
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handler.relation(static_cast<const osmium::DiffRelation&>(diff));
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break;
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default:
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throw osmium::unknown_type{};
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}
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}
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template <typename THandler, typename... TRest>
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inline void apply_diff_iterator_recurse(const osmium::DiffObject& diff, THandler& handler, TRest&... more) {
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apply_diff_iterator_recurse(diff, handler);
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apply_diff_iterator_recurse(diff, more...);
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}
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} // namespace detail
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template <typename TIterator, typename... THandlers>
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inline void apply_diff(TIterator it, TIterator end, THandlers&... handlers) {
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using diff_iterator = osmium::DiffIterator<TIterator>;
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diff_iterator dit{it, end};
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diff_iterator dend{end, end};
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for (; dit != dend; ++dit) {
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detail::apply_diff_iterator_recurse(*dit, handlers...);
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}
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}
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class OSMObject;
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template <typename TSource, typename... THandlers>
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inline void apply_diff(TSource& source, THandlers&... handlers) {
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apply_diff(osmium::io::InputIterator<TSource, osmium::OSMObject>{source},
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osmium::io::InputIterator<TSource, osmium::OSMObject>{},
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handlers...);
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}
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template <typename... THandlers>
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inline void apply_diff(osmium::memory::Buffer& buffer, THandlers&... handlers) {
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apply_diff(buffer.begin(), buffer.end(), handlers...);
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}
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template <typename... THandlers>
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inline void apply_diff(const osmium::memory::Buffer& buffer, THandlers&... handlers) {
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apply_diff(buffer.cbegin(), buffer.cend(), handlers...);
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}
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} // namespace osmium
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#endif // OSMIUM_DIFF_VISITOR_HPP
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