text: /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
  // basic_text_iprimitive.ipp:
  
  // (C) Copyright 2002 Robert Ramey - http://www.rrsd.com .
  // Distributed under the Boost Software License, Version 1.0. (See
  // accompanying file LICENSE_1_0.txt or copy at
  // http://www.boost.org/LICENSE_1_0.txt)
  
  //  See http://www.boost.org for updates, documentation, and revision history.
  
  #include <cstddef> // size_t, NULL
  #include <limits> // NULL
  
  #include <boost/config.hpp>
  #if defined(BOOST_NO_STDC_NAMESPACE)
  namespace std{
      using ::size_t;
  } // namespace std
  #endif
  
  #include <boost/serialization/throw_exception.hpp>
  
  #include <boost/archive/basic_text_iprimitive.hpp>
  
  #include <boost/archive/iterators/remove_whitespace.hpp>
  #include <boost/archive/iterators/istream_iterator.hpp>
  #include <boost/archive/iterators/binary_from_base64.hpp>
  #include <boost/archive/iterators/transform_width.hpp>
  
  namespace boost {
  namespace archive {
  
  namespace detail {
      template<class CharType>
      static inline bool is_whitespace(CharType c);
  
      template<>
      inline bool is_whitespace(char t){
          return 0 != std::isspace(t);
      }
  
      #ifndef BOOST_NO_CWCHAR
      template<>
      inline bool is_whitespace(wchar_t t){
          return 0 != std::iswspace(t);
      }
      #endif
  } // detail
  
  // translate base64 text into binary and copy into buffer
  // until buffer is full.
  template<class IStream>
  BOOST_ARCHIVE_OR_WARCHIVE_DECL void
  basic_text_iprimitive<IStream>::load_binary(
      void *address,
      std::size_t count
  ){
      typedef typename IStream::char_type CharType;
  
      if(0 == count)
          return;
  
      BOOST_ASSERT(
          static_cast<std::size_t>((std::numeric_limits<std::streamsize>::max)())
          > (count + sizeof(CharType) - 1)/sizeof(CharType)
      );
  
      if(is.fail())
          boost::serialization::throw_exception(
              archive_exception(archive_exception::input_stream_error)
          );
      // convert from base64 to binary
      typedef typename
          iterators::transform_width<
              iterators::binary_from_base64<
                  iterators::remove_whitespace<
                      iterators::istream_iterator<CharType>
                  >
                  ,typename IStream::int_type
              >
              ,8
              ,6
              ,CharType
          >
          binary;
  
      binary i = binary(iterators::istream_iterator<CharType>(is));
  
      char * caddr = static_cast<char *>(address);
  
      // take care that we don't increment anymore than necessary
      while(count-- > 0){
          *caddr++ = static_cast<char>(*i++);
      }
  
      // skip over any excess input
      for(;;){
          typename IStream::int_type r;
          r = is.get();
          if(is.eof())
              break;
          if(detail::is_whitespace(static_cast<CharType>(r)))
              break;
      }
  }
  
  template<class IStream>
  BOOST_ARCHIVE_OR_WARCHIVE_DECL
  basic_text_iprimitive<IStream>::basic_text_iprimitive(
      IStream  &is_,
      bool no_codecvt
  ) :
      is(is_),
      flags_saver(is_),
      precision_saver(is_),
  #ifndef BOOST_NO_STD_LOCALE
      codecvt_null_facet(1),
      archive_locale(is.getloc(), & codecvt_null_facet),
      locale_saver(is)
  {
      if(! no_codecvt){
          is_.sync();
          is_.imbue(archive_locale);
      }
      is_ >> std::noboolalpha;
  }
  #else
  {}
  #endif
  
  template<class IStream>
  BOOST_ARCHIVE_OR_WARCHIVE_DECL
  basic_text_iprimitive<IStream>::~basic_text_iprimitive(){
  }
  
  } // namespace archive
  } // namespace boost
  