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130 lines
5.3 KiB
C++
130 lines
5.3 KiB
C++
// ----------------------------------------------------------------------------
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// Copyright (C) 2002-2006 Marcin Kalicinski
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//
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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// For more information, see www.boost.org
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// ----------------------------------------------------------------------------
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#ifndef BOOST_PROPERTY_TREE_PTREE_SERIALIZATION_HPP_INCLUDED
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#define BOOST_PROPERTY_TREE_PTREE_SERIALIZATION_HPP_INCLUDED
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#include <boost/property_tree/ptree.hpp>
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#include <boost/serialization/nvp.hpp>
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#include <boost/serialization/collections_save_imp.hpp>
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#include <boost/serialization/detail/stack_constructor.hpp>
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#include <boost/serialization/split_free.hpp>
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#include <boost/serialization/utility.hpp>
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namespace boost { namespace property_tree
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{
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///////////////////////////////////////////////////////////////////////////
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// boost::serialization support
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/**
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* Serialize the property tree to the given archive.
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* @note In addition to serializing to regular archives, this supports
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* serializing to archives requiring name-value pairs, e.g. XML
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* archives. However, the output format in the XML archive is not
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* guaranteed to be the same as that when using the Boost.PropertyTree
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* library's @c boost::property_tree::xml_parser::write_xml.
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* @param ar The archive to which to save the serialized property tree.
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* This archive should conform to the concept laid out by the
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* Boost.Serialization library.
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* @param t The property tree to serialize.
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* @param file_version file_version for the archive.
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* @post @c ar will contain the serialized form of @c t.
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*/
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template<class Archive, class K, class D, class C>
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inline void save(Archive &ar,
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const basic_ptree<K, D, C> &t,
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const unsigned int file_version)
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{
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using namespace boost::serialization;
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stl::save_collection<Archive, basic_ptree<K, D, C> >(ar, t);
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ar << make_nvp("data", t.data());
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}
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namespace detail
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{
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template <class Archive, class K, class D, class C>
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inline void load_children(Archive &ar,
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basic_ptree<K, D, C> &t)
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{
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namespace bsl = boost::serialization;
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namespace bsa = boost::archive;
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typedef basic_ptree<K, D, C> tree;
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typedef typename tree::value_type value_type;
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bsl::collection_size_type count;
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ar >> BOOST_SERIALIZATION_NVP(count);
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bsl::item_version_type item_version(0);
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const bsa::library_version_type library_version(
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ar.get_library_version()
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);
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if(bsa::library_version_type(3) < library_version){
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ar >> BOOST_SERIALIZATION_NVP(item_version);
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}
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// Can't use the serialization helper, it expects resize() to exist
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// for default-constructible elements.
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// This is a copy/paste of the fallback version.
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t.clear();
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while(count-- > 0){
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bsl::detail::stack_construct<Archive, value_type>
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u(ar, item_version);
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ar >> bsl::make_nvp("item", u.reference());
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t.push_back(u.reference());
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ar.reset_object_address(& t.back() , & u.reference());
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}
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}
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}
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/**
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* De-serialize the property tree to the given archive.
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* @note In addition to de-serializing from regular archives, this supports
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* loading from archives requiring name-value pairs, e.g. XML
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* archives. The format should be that used by
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* boost::property_tree::save.
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* @param ar The archive from which to load the serialized property tree.
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* This archive should conform to the concept laid out by the
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* Boost.Serialization library.
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* @param t The property tree to de-serialize.
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* @param file_version file_version for the archive.
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* @post @c t will contain the de-serialized data from @c ar.
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*/
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template<class Archive, class K, class D, class C>
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inline void load(Archive &ar,
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basic_ptree<K, D, C> &t,
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const unsigned int file_version)
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{
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namespace bsl = boost::serialization;
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detail::load_children(ar, t);
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ar >> bsl::make_nvp("data", t.data());
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}
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/**
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* Load or store the property tree using the given archive.
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* @param ar The archive from which to load or save the serialized property
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* tree. The type of this archive will determine whether saving or
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* loading is performed.
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* @param t The property tree to load or save.
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* @param file_version file_version for the archive.
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*/
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template<class Archive, class K, class D, class C>
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inline void serialize(Archive &ar,
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basic_ptree<K, D, C> &t,
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const unsigned int file_version)
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{
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using namespace boost::serialization;
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split_free(ar, t, file_version);
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}
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} }
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#endif
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