Chris@16: #ifndef BOOST_ARCHIVE_BASIC_TEXT_OPRIMITIVE_HPP
Chris@16: #define BOOST_ARCHIVE_BASIC_TEXT_OPRIMITIVE_HPP
Chris@16: 
Chris@16: // MS compatible compilers support #pragma once
Chris@101: #if defined(_MSC_VER)
Chris@16: # pragma once
Chris@16: #endif
Chris@16: 
Chris@16: /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
Chris@16: // basic_text_oprimitive.hpp
Chris@16: 
Chris@16: // (C) Copyright 2002 Robert Ramey - http://www.rrsd.com . 
Chris@16: // Use, modification and distribution is subject to the Boost Software
Chris@16: // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
Chris@16: // http://www.boost.org/LICENSE_1_0.txt)
Chris@16: 
Chris@16: //  See http://www.boost.org for updates, documentation, and revision history.
Chris@16: 
Chris@16: // archives stored as text - note these ar templated on the basic
Chris@16: // stream templates to accommodate wide (and other?) kind of characters
Chris@16: //
Chris@16: // note the fact that on libraries without wide characters, ostream is
Chris@16: // is not a specialization of basic_ostream which in fact is not defined
Chris@16: // in such cases.   So we can't use basic_ostream<OStream::char_type> but rather
Chris@16: // use two template parameters
Chris@16: 
Chris@16: #include <iomanip>
Chris@16: #include <locale>
Chris@16: #include <boost/assert.hpp>
Chris@16: #include <cstddef> // size_t
Chris@16: 
Chris@16: #include <boost/config.hpp>
Chris@16: #include <boost/static_assert.hpp>
Chris@16: #include <boost/detail/workaround.hpp>
Chris@101: #include <boost/io/ios_state.hpp>
Chris@101: 
Chris@16: #if BOOST_WORKAROUND(BOOST_DINKUMWARE_STDLIB, == 1)
Chris@16: #include <boost/archive/dinkumware.hpp>
Chris@16: #endif
Chris@16: 
Chris@16: #if defined(BOOST_NO_STDC_NAMESPACE)
Chris@16: namespace std{ 
Chris@16:     using ::size_t;
Chris@16:     #if ! defined(BOOST_DINKUMWARE_STDLIB) && ! defined(__SGI_STL_PORT)
Chris@16:         using ::locale;
Chris@16:     #endif
Chris@16: } // namespace std
Chris@16: #endif
Chris@16: 
Chris@101: #include <boost/type_traits/is_floating_point.hpp>
Chris@101: #include <boost/mpl/bool.hpp>
Chris@16: #include <boost/limits.hpp>
Chris@16: #include <boost/integer.hpp>
Chris@16: #include <boost/io/ios_state.hpp>
Chris@16: #include <boost/scoped_ptr.hpp>
Chris@16: #include <boost/serialization/throw_exception.hpp>
Chris@16: #include <boost/archive/archive_exception.hpp>
Chris@16: #include <boost/archive/basic_streambuf_locale_saver.hpp>
Chris@16: #include <boost/archive/detail/abi_prefix.hpp> // must be the last header
Chris@16: 
Chris@16: namespace boost {
Chris@16: namespace archive {
Chris@16: 
Chris@16: /////////////////////////////////////////////////////////////////////////
Chris@16: // class basic_text_oprimitive - output of prmitives to stream
Chris@16: template<class OStream>
Chris@16: class basic_text_oprimitive
Chris@16: {
Chris@16: protected:
Chris@16:     OStream &os;
Chris@16:     io::ios_flags_saver flags_saver;
Chris@16:     io::ios_precision_saver precision_saver;
Chris@16: 
Chris@16:     #ifndef BOOST_NO_STD_LOCALE
Chris@16:     boost::scoped_ptr<std::locale> archive_locale;
Chris@16:     basic_streambuf_locale_saver<
Chris@101:         typename OStream::char_type, 
Chris@101:         typename OStream::traits_type
Chris@16:     > locale_saver;
Chris@16:     #endif
Chris@16: 
Chris@16:     /////////////////////////////////////////////////////////
Chris@16:     // fundamental types that need special treatment
Chris@16:     void save(const bool t){
Chris@16:         // trap usage of invalid uninitialized boolean which would
Chris@16:         // otherwise crash on load.
Chris@16:         BOOST_ASSERT(0 == static_cast<int>(t) || 1 == static_cast<int>(t));
Chris@16:         if(os.fail())
Chris@16:             boost::serialization::throw_exception(
Chris@16:                 archive_exception(archive_exception::output_stream_error)
Chris@16:             );
Chris@16:         os << t;
Chris@16:     }
Chris@16:     void save(const signed char t)
Chris@16:     {
Chris@16:         save(static_cast<short int>(t));
Chris@16:     }
Chris@16:     void save(const unsigned char t)
Chris@16:     {
Chris@16:         save(static_cast<short unsigned int>(t));
Chris@16:     }
Chris@16:     void save(const char t)
Chris@16:     {
Chris@16:         save(static_cast<short int>(t));
Chris@16:     }
Chris@16:     #ifndef BOOST_NO_INTRINSIC_WCHAR_T
Chris@16:     void save(const wchar_t t)
Chris@16:     {
Chris@16:         BOOST_STATIC_ASSERT(sizeof(wchar_t) <= sizeof(int));
Chris@16:         save(static_cast<int>(t));
Chris@16:     }
Chris@16:     #endif
Chris@101: 
Chris@101:     /////////////////////////////////////////////////////////
Chris@101:     // saving of any types not listed above
Chris@101: 
Chris@101:     template<class T>
Chris@101:     void save_impl(const T &t, boost::mpl::bool_<false> &){
Chris@101:         if(os.fail())
Chris@101:             boost::serialization::throw_exception(
Chris@101:                 archive_exception(archive_exception::output_stream_error)
Chris@101:             );
Chris@101:         os << t;
Chris@101:     }
Chris@101: 
Chris@101:     /////////////////////////////////////////////////////////
Chris@101:     // floating point types need even more special treatment
Chris@101:     // the following determines whether the type T is some sort
Chris@101:     // of floating point type.  Note that we then assume that
Chris@101:     // the stream << operator is defined on that type - if not
Chris@101:     // we'll get a compile time error. This is meant to automatically
Chris@101:     // support synthesized types which support floating point
Chris@101:     // operations. Also it should handle compiler dependent types
Chris@101:     // such long double.  Due to John Maddock.
Chris@101: 
Chris@101:     template<class T>
Chris@101:     struct is_float {
Chris@101:         typedef typename mpl::bool_< 
Chris@101:             boost::is_floating_point<T>::value 
Chris@101:             || (std::numeric_limits<T>::is_specialized
Chris@101:             && !std::numeric_limits<T>::is_integer
Chris@101:             && !std::numeric_limits<T>::is_exact
Chris@101:             && std::numeric_limits<T>::max_exponent) 
Chris@101:         >::type type;
Chris@101:     };
Chris@101: 
Chris@101:     template<class T>
Chris@101:     void save_impl(const T &t, boost::mpl::bool_<true> &){
Chris@16:         // must be a user mistake - can't serialize un-initialized data
Chris@16:         if(os.fail())
Chris@16:             boost::serialization::throw_exception(
Chris@16:                 archive_exception(archive_exception::output_stream_error)
Chris@16:             );
Chris@101:         // The formulae for the number of decimla digits required is given in
Chris@101:         // http://www2.open-std.org/JTC1/SC22/WG21/docs/papers/2005/n1822.pdf
Chris@101:         // which is derived from Kahan's paper:
Chris@101:         // www.eecs.berkeley.edu/~wkahan/ieee754status/ieee754.ps
Chris@101:         // const unsigned int digits = (std::numeric_limits<T>::digits * 3010) / 10000;
Chris@101:         // note: I've commented out the above because I didn't get good results.  e.g.
Chris@101:         // in one case I got a difference of 19 units.
Chris@101:         #ifndef BOOST_NO_CXX11_NUMERIC_LIMITS
Chris@101:             const unsigned int digits = std::numeric_limits<T>::max_digits10;
Chris@101:         #else
Chris@101:             const unsigned int digits = std::numeric_limits<T>::digits10 + 2;
Chris@101:         #endif
Chris@101:         os << std::setprecision(digits) << std::scientific << t;
Chris@16:     }
Chris@101: 
Chris@101:     template<class T>
Chris@101:     void save(const T & t){
Chris@101:         boost::io::ios_flags_saver fs(os);
Chris@101:         boost::io::ios_precision_saver ps(os);
Chris@101:         typename is_float<T>::type tf;
Chris@101:         save_impl(t, tf);
Chris@16:     }
Chris@101: 
Chris@16:     BOOST_ARCHIVE_OR_WARCHIVE_DECL(BOOST_PP_EMPTY())
Chris@16:     basic_text_oprimitive(OStream & os, bool no_codecvt);
Chris@16:     BOOST_ARCHIVE_OR_WARCHIVE_DECL(BOOST_PP_EMPTY()) 
Chris@16:     ~basic_text_oprimitive();
Chris@16: public:
Chris@16:     // unformatted append of one character
Chris@101:     void put(typename OStream::char_type c){
Chris@16:         if(os.fail())
Chris@16:             boost::serialization::throw_exception(
Chris@16:                 archive_exception(archive_exception::output_stream_error)
Chris@16:             );
Chris@16:         os.put(c);
Chris@16:     }
Chris@16:     // unformatted append of null terminated string
Chris@16:     void put(const char * s){
Chris@16:         while('\0' != *s)
Chris@16:             os.put(*s++);
Chris@16:     }
Chris@16:     BOOST_ARCHIVE_OR_WARCHIVE_DECL(void) 
Chris@16:     save_binary(const void *address, std::size_t count);
Chris@16: };
Chris@16: 
Chris@16: } //namespace boost 
Chris@16: } //namespace archive 
Chris@16: 
Chris@16: #include <boost/archive/detail/abi_suffix.hpp> // pops abi_suffix.hpp pragmas
Chris@16: 
Chris@16: #endif // BOOST_ARCHIVE_BASIC_TEXT_OPRIMITIVE_HPP