199 lines
6.5 KiB
C++
199 lines
6.5 KiB
C++
#ifndef BOOST_ARCHIVE_BINARY_IPRIMITIVE_HPP
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#define BOOST_ARCHIVE_BINARY_IPRIMITIVE_HPP
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// MS compatible compilers support #pragma once
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#if defined(_MSC_VER)
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# pragma once
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#endif
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#if defined(_MSC_VER)
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#pragma warning( disable : 4800 )
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#endif
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/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
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// basic_binary_iprimitive.hpp
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//
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// archives stored as native binary - this should be the fastest way
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// to archive the state of a group of obects. It makes no attempt to
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// convert to any canonical form.
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// IN GENERAL, ARCHIVES CREATED WITH THIS CLASS WILL NOT BE READABLE
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// ON PLATFORM APART FROM THE ONE THEY ARE CREATED ON
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// (C) Copyright 2002 Robert Ramey - http://www.rrsd.com .
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// Use, modification and distribution is subject to the Boost Software
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// License, Version 1.0. (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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// See http://www.boost.org for updates, documentation, and revision history.
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#include <iosfwd>
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#include <boost/assert.hpp>
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#include <locale>
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#include <cstring> // std::memcpy
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#include <cstddef> // std::size_t
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#include <streambuf> // basic_streambuf
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#include <string>
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#include <boost/config.hpp>
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#if defined(BOOST_NO_STDC_NAMESPACE)
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namespace std{
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using ::memcpy;
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using ::size_t;
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} // namespace std
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#endif
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#include <boost/cstdint.hpp>
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#include <boost/serialization/throw_exception.hpp>
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#include <boost/integer.hpp>
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#include <boost/integer_traits.hpp>
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//#include <boost/mpl/placeholders.hpp>
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#include <boost/serialization/is_bitwise_serializable.hpp>
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#include <boost/serialization/array.hpp>
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#include <boost/archive/basic_streambuf_locale_saver.hpp>
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#include <boost/archive/codecvt_null.hpp>
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#include <boost/archive/archive_exception.hpp>
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#include <boost/archive/detail/auto_link_archive.hpp>
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#include <boost/archive/detail/abi_prefix.hpp> // must be the last header
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namespace boost {
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namespace archive {
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/////////////////////////////////////////////////////////////////////////////
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// class binary_iarchive - read serialized objects from a input binary stream
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template<class Archive, class Elem, class Tr>
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class BOOST_SYMBOL_VISIBLE basic_binary_iprimitive {
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#ifndef BOOST_NO_MEMBER_TEMPLATE_FRIENDS
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friend class load_access;
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protected:
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#else
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public:
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#endif
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std::basic_streambuf<Elem, Tr> & m_sb;
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// return a pointer to the most derived class
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Archive * This(){
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return static_cast<Archive *>(this);
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}
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#ifndef BOOST_NO_STD_LOCALE
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// note order! - if you change this, libstd++ will fail!
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// a) create new locale with new codecvt facet
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// b) save current locale
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// c) change locale to new one
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// d) use stream buffer
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// e) change locale back to original
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// f) destroy new codecvt facet
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boost::archive::codecvt_null<Elem> codecvt_null_facet;
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basic_streambuf_locale_saver<Elem, Tr> locale_saver;
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std::locale archive_locale;
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#endif
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// main template for serilization of primitive types
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template<class T>
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void load(T & t){
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load_binary(& t, sizeof(T));
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}
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/////////////////////////////////////////////////////////
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// fundamental types that need special treatment
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// trap usage of invalid uninitialized boolean
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void load(bool & t){
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load_binary(& t, sizeof(t));
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int i = t;
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BOOST_ASSERT(0 == i || 1 == i);
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(void)i; // warning suppression for release builds.
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}
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BOOST_ARCHIVE_OR_WARCHIVE_DECL void
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load(std::string &s);
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#ifndef BOOST_NO_STD_WSTRING
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BOOST_ARCHIVE_OR_WARCHIVE_DECL void
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load(std::wstring &ws);
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#endif
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BOOST_ARCHIVE_OR_WARCHIVE_DECL void
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load(char * t);
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BOOST_ARCHIVE_OR_WARCHIVE_DECL void
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load(wchar_t * t);
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BOOST_ARCHIVE_OR_WARCHIVE_DECL void
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init();
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BOOST_ARCHIVE_OR_WARCHIVE_DECL
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basic_binary_iprimitive(
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std::basic_streambuf<Elem, Tr> & sb,
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bool no_codecvt
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);
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BOOST_ARCHIVE_OR_WARCHIVE_DECL
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~basic_binary_iprimitive();
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public:
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// we provide an optimized load for all fundamental types
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// typedef serialization::is_bitwise_serializable<mpl::_1>
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// use_array_optimization;
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struct use_array_optimization {
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template <class T>
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#if defined(BOOST_NO_DEPENDENT_NESTED_DERIVATIONS)
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struct apply {
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typedef typename boost::serialization::is_bitwise_serializable< T >::type type;
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};
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#else
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struct apply : public boost::serialization::is_bitwise_serializable< T > {};
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#endif
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};
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// the optimized load_array dispatches to load_binary
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template <class ValueType>
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void load_array(serialization::array_wrapper<ValueType>& a, unsigned int)
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{
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load_binary(a.address(),a.count()*sizeof(ValueType));
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}
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void
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load_binary(void *address, std::size_t count);
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};
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template<class Archive, class Elem, class Tr>
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inline void
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basic_binary_iprimitive<Archive, Elem, Tr>::load_binary(
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void *address,
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std::size_t count
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){
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// note: an optimizer should eliminate the following for char files
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BOOST_ASSERT(
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static_cast<std::streamsize>(count / sizeof(Elem))
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<= boost::integer_traits<std::streamsize>::const_max
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);
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std::streamsize s = static_cast<std::streamsize>(count / sizeof(Elem));
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std::streamsize scount = m_sb.sgetn(
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static_cast<Elem *>(address),
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s
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);
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if(scount != s)
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boost::serialization::throw_exception(
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archive_exception(archive_exception::input_stream_error)
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);
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// note: an optimizer should eliminate the following for char files
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BOOST_ASSERT(count % sizeof(Elem) <= boost::integer_traits<std::streamsize>::const_max);
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s = static_cast<std::streamsize>(count % sizeof(Elem));
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if(0 < s){
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// if(is.fail())
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// boost::serialization::throw_exception(
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// archive_exception(archive_exception::stream_error)
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// );
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Elem t;
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scount = m_sb.sgetn(& t, 1);
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if(scount != 1)
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boost::serialization::throw_exception(
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archive_exception(archive_exception::input_stream_error)
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);
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std::memcpy(static_cast<char*>(address) + (count - s), &t, static_cast<std::size_t>(s));
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}
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}
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} // namespace archive
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} // namespace boost
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#include <boost/archive/detail/abi_suffix.hpp> // pop pragmas
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#endif // BOOST_ARCHIVE_BINARY_IPRIMITIVE_HPP
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