sl@0: // (C) Copyright Jonathan Turkanis 2003.
sl@0: // Distributed under the Boost Software License, Version 1.0. (See accompanying
sl@0: // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.)
sl@0: 
sl@0: // See http://www.boost.org/libs/iostreams for documentation.
sl@0: 
sl@0: #ifndef BOOST_IOSTREAMS_WRITE_HPP_INCLUDED
sl@0: #define BOOST_IOSTREAMS_WRITE_HPP_INCLUDED
sl@0: 
sl@0: #if defined(_MSC_VER) && (_MSC_VER >= 1020)
sl@0: # pragma once
sl@0: #endif
sl@0: 
sl@0: #include <boost/config.hpp>  // DEDUCED_TYPENAME, MSVC.
sl@0: #include <boost/detail/workaround.hpp>
sl@0: #include <boost/iostreams/categories.hpp>
sl@0: #include <boost/iostreams/detail/char_traits.hpp>
sl@0: #include <boost/iostreams/detail/dispatch.hpp>
sl@0: #include <boost/iostreams/detail/ios.hpp>  // streamsize.
sl@0: #include <boost/iostreams/detail/streambuf.hpp>
sl@0: #include <boost/iostreams/detail/wrap_unwrap.hpp>
sl@0: #include <boost/iostreams/operations_fwd.hpp>
sl@0: #include <boost/iostreams/traits.hpp>
sl@0: #include <boost/mpl/if.hpp>
sl@0: 
sl@0: // Must come last.
sl@0: #include <boost/iostreams/detail/config/disable_warnings.hpp>
sl@0: 
sl@0: #if BOOST_WORKAROUND(BOOST_MSVC, < 1300) //-----------------------------------//
sl@0: # include <boost/iostreams/detail/vc6/write.hpp>
sl@0: #else // #if BOOST_WORKAROUND(BOOST_MSVC, < 1300) //--------------------------//
sl@0: 
sl@0: namespace boost { namespace iostreams {
sl@0: 
sl@0: namespace detail {
sl@0: 
sl@0: template<typename T> 
sl@0: struct write_device_impl;
sl@0: 
sl@0: template<typename T> 
sl@0: struct write_filter_impl;
sl@0: 
sl@0: } // End namespace detail.
sl@0: 
sl@0: template<typename T>
sl@0: bool put(T& t, typename char_type_of<T>::type c)
sl@0: { return detail::write_device_impl<T>::put(detail::unwrap(t), c); }
sl@0: 
sl@0: template<typename T>
sl@0: inline std::streamsize write
sl@0:     (T& t, const typename char_type_of<T>::type* s, std::streamsize n)
sl@0: { return detail::write_device_impl<T>::write(detail::unwrap(t), s, n); }
sl@0: 
sl@0: template<typename T, typename Sink>
sl@0: inline std::streamsize
sl@0: write( T& t, Sink& snk, const typename char_type_of<T>::type* s, 
sl@0:        std::streamsize n )
sl@0: { return detail::write_filter_impl<T>::write(detail::unwrap(t), snk, s, n); }
sl@0: 
sl@0: namespace detail {
sl@0: 
sl@0: //------------------Definition of write_device_impl---------------------------//
sl@0: 
sl@0: template<typename T>
sl@0: struct write_device_impl
sl@0:     : mpl::if_<
sl@0:           is_custom<T>,
sl@0:           operations<T>,
sl@0:           write_device_impl<
sl@0:               BOOST_DEDUCED_TYPENAME
sl@0:               dispatch<
sl@0:                   T, ostream_tag, streambuf_tag, output
sl@0:               >::type
sl@0:           >
sl@0:       >::type
sl@0:     { };
sl@0: 
sl@0: template<>
sl@0: struct write_device_impl<ostream_tag> {
sl@0:     template<typename T>
sl@0:     static bool put(T& t, typename char_type_of<T>::type c)
sl@0:     {
sl@0:         typedef typename char_type_of<T>::type          char_type;
sl@0:         typedef BOOST_IOSTREAMS_CHAR_TRAITS(char_type)  traits_type;
sl@0:         return !traits_type::eq_int_type( t.rdbuf()->s.sputc(),
sl@0:                                           traits_type::eof() );
sl@0:     }
sl@0: 
sl@0:     template<typename T>
sl@0:     static std::streamsize write
sl@0:         (T& t, const typename char_type_of<T>::type* s, std::streamsize n)
sl@0:     { return t.rdbuf()->sputn(s, n); }
sl@0: };
sl@0: 
sl@0: template<>
sl@0: struct write_device_impl<streambuf_tag> {
sl@0:     template<typename T>
sl@0:     static bool put(T& t, typename char_type_of<T>::type c)
sl@0:     {
sl@0:         typedef typename char_type_of<T>::type          char_type;
sl@0:         typedef BOOST_IOSTREAMS_CHAR_TRAITS(char_type)  traits_type;
sl@0:         return !traits_type::eq_int_type(t.sputc(c), traits_type::eof());
sl@0:     }
sl@0: 
sl@0:     template<typename T>
sl@0:     static std::streamsize write
sl@0:         (T& t, const typename char_type_of<T>::type* s, std::streamsize n)
sl@0:     { return t.sputn(s, n); }
sl@0: };
sl@0: 
sl@0: template<>
sl@0: struct write_device_impl<output> {
sl@0:     template<typename T>
sl@0:     static bool put(T& t, typename char_type_of<T>::type c)
sl@0:     { return t.write(&c, 1) == 1; }
sl@0: 
sl@0:     template<typename T>
sl@0:     static std::streamsize
sl@0:     write(T& t, const typename char_type_of<T>::type* s, std::streamsize n)
sl@0:     { return t.write(s, n); }
sl@0: };
sl@0: 
sl@0: //------------------Definition of write_filter_impl---------------------------//
sl@0: 
sl@0: template<typename T>
sl@0: struct write_filter_impl
sl@0:     : mpl::if_<
sl@0:           is_custom<T>,
sl@0:           operations<T>,
sl@0:           write_filter_impl<
sl@0:               BOOST_DEDUCED_TYPENAME
sl@0:               dispatch<
sl@0:                   T, multichar_tag, any_tag
sl@0:               >::type
sl@0:           >
sl@0:       >::type
sl@0:     { };
sl@0: 
sl@0: template<>
sl@0: struct write_filter_impl<multichar_tag> {
sl@0:     template<typename T, typename Sink>
sl@0:     static std::streamsize
sl@0:     write( T& t, Sink& snk, const typename char_type_of<T>::type* s,
sl@0:            std::streamsize n )
sl@0:     { return t.write(snk, s, n); }
sl@0: };
sl@0: 
sl@0: template<>
sl@0: struct write_filter_impl<any_tag> {
sl@0:     template<typename T, typename Sink>
sl@0:     static std::streamsize
sl@0:     write( T& t, Sink& snk, const typename char_type_of<T>::type* s,
sl@0:            std::streamsize n )
sl@0:     {
sl@0:         for (std::streamsize off = 0; off < n; ++off)
sl@0:             if (!t.put(snk, s[off]))
sl@0:                 return off;
sl@0:         return n;
sl@0:     }
sl@0: };
sl@0: 
sl@0: } // End namespace detail.
sl@0: 
sl@0: } } // End namespaces iostreams, boost.
sl@0: 
sl@0: #endif // #if BOOST_WORKAROUND(BOOST_MSVC, < 1300) //-------------------------//
sl@0: 
sl@0: #include <boost/iostreams/detail/config/enable_warnings.hpp>
sl@0: 
sl@0: #endif // #ifndef BOOST_IOSTREAMS_WRITE_HPP_INCLUDED