1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/ossrv/ossrv_pub/boost_apis/boost/iostreams/positioning.hpp	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,102 @@
     1.4 +// (C) Copyright Jonathan Turkanis 2003.
     1.5 +// Distributed under the Boost Software License, Version 1.0. (See accompanying
     1.6 +// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.)
     1.7 +
     1.8 +// See http://www.boost.org/libs/iostreams for documentation.
     1.9 +
    1.10 +// Thanks to Gareth Sylvester-Bradley for the Dinkumware versions of the
    1.11 +// positioning functions.
    1.12 +
    1.13 +#ifndef BOOST_IOSTREAMS_POSITIONING_HPP_INCLUDED
    1.14 +#define BOOST_IOSTREAMS_POSITIONING_HPP_INCLUDED
    1.15 +
    1.16 +#if defined(_MSC_VER) && (_MSC_VER >= 1020)
    1.17 +# pragma once
    1.18 +#endif
    1.19 +
    1.20 +#include <boost/config.hpp>
    1.21 +#include <boost/cstdint.hpp>
    1.22 +#include <boost/integer_traits.hpp>
    1.23 +#include <boost/iostreams/detail/config/codecvt.hpp> // mbstate_t.
    1.24 +#include <boost/iostreams/detail/ios.hpp> // streamoff, streampos.
    1.25 +
    1.26 +// Must come last.
    1.27 +#include <boost/iostreams/detail/config/disable_warnings.hpp> 
    1.28 +
    1.29 +#ifdef BOOST_NO_STDC_NAMESPACE
    1.30 +namespace std { using ::fpos_t; }
    1.31 +#endif
    1.32 +
    1.33 +namespace boost { namespace iostreams {
    1.34 +
    1.35 +typedef boost::intmax_t stream_offset;
    1.36 +
    1.37 +inline std::streamoff stream_offset_to_streamoff(stream_offset off)
    1.38 +{ return static_cast<stream_offset>(off); }
    1.39 +
    1.40 +template<typename PosType> // Hande custom pos_type's.
    1.41 +inline stream_offset position_to_offset(PosType pos)
    1.42 +{ return std::streamoff(pos); }
    1.43 +
    1.44 +#if ((defined(_YVALS) && !defined(__IBMCPP__)) || defined(_CPPLIB_VER)) && \
    1.45 +     !defined(__SGI_STL_PORT) && !defined(_STLPORT_VERSION) \
    1.46 +     && !defined(__QNX__) \
    1.47 +   /**/
    1.48 +
    1.49 +        /* Dinkumware */
    1.50 +
    1.51 +inline std::streampos offset_to_position(stream_offset off)
    1.52 +{
    1.53 +    // Use implementation-specific constructor.
    1.54 +    return std::streampos(std::mbstate_t(), off);
    1.55 +}
    1.56 +
    1.57 +inline stream_offset fpos_t_to_offset(std::fpos_t pos)
    1.58 +{ // Helper function.
    1.59 +#if defined(_POSIX_) || (_INTEGRAL_MAX_BITS >= 64)
    1.60 +    return pos;
    1.61 +#else
    1.62 +    return _FPOSOFF(pos);
    1.63 +#endif
    1.64 +}
    1.65 +
    1.66 +# if defined(_CPPLIB_VER) //--------------------------------------------------//
    1.67 +
    1.68 +        /* Recent Dinkumware */
    1.69 +
    1.70 +inline stream_offset position_to_offset(std::streampos pos)
    1.71 +{
    1.72 +    // Use implementation-specific member function seekpos().
    1.73 +    return fpos_t_to_offset(pos.seekpos()) +
    1.74 +           stream_offset(std::streamoff(pos)) -
    1.75 +           stream_offset(std::streamoff(pos.seekpos()));
    1.76 +}
    1.77 +
    1.78 +# else // # if defined(_CPPLIB_VER) //----------------------------------------//
    1.79 +
    1.80 +        /* Old Dinkumware */
    1.81 +
    1.82 +inline stream_offset position_to_offset(std::streampos pos)
    1.83 +{
    1.84 +    // use implementation-specific member function get_fpos_t().
    1.85 +    return fpos_t_to_offset(pos.get_fpos_t()) +
    1.86 +           stream_offset(std::streamoff(pos)) -
    1.87 +           stream_offset(std::streamoff(pos.get_fpos_t()));
    1.88 +}
    1.89 +
    1.90 +# endif // # if defined(_CPPLIB_VER) //---------------------------------------//
    1.91 +#else // Dinkumware //--------------------------------------------------------//
    1.92 +
    1.93 +        /* Non-Dinkumware */
    1.94 +
    1.95 +inline std::streampos offset_to_position(stream_offset off) { return off; }
    1.96 +
    1.97 +inline stream_offset position_to_offset(std::streampos pos) { return pos; }
    1.98 +
    1.99 +#endif // Dinkumware //-------------------------------------------------------//
   1.100 +
   1.101 +} } // End namespaces iostreams, boost.
   1.102 +
   1.103 +#include <boost/iostreams/detail/config/enable_warnings.hpp> 
   1.104 +
   1.105 +#endif // #ifndef BOOST_IOSTREAMS_POSITIONING_HPP_INCLUDED