Chris@16: /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
Chris@16: // basic_text_iprimitive.ipp:
Chris@16: 
Chris@16: // (C) Copyright 2002 Robert Ramey - http://www.rrsd.com .
Chris@16: // Distributed under the Boost Software License, Version 1.0. (See
Chris@16: // 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: #include <cstddef> // size_t
Chris@16: #include <cstddef> // NULL
Chris@16: 
Chris@16: #include <boost/config.hpp>
Chris@16: #if defined(BOOST_NO_STDC_NAMESPACE)
Chris@16: namespace std{ 
Chris@16:     using ::size_t; 
Chris@16: } // namespace std
Chris@16: #endif
Chris@16: 
Chris@16: #include <boost/serialization/throw_exception.hpp>
Chris@16: #include <boost/serialization/pfto.hpp>
Chris@16: 
Chris@16: #include <boost/archive/basic_text_iprimitive.hpp>
Chris@16: #include <boost/archive/codecvt_null.hpp>
Chris@16: #include <boost/archive/add_facet.hpp>
Chris@16: 
Chris@16: #include <boost/archive/iterators/remove_whitespace.hpp>
Chris@16: #include <boost/archive/iterators/istream_iterator.hpp>
Chris@16: #include <boost/archive/iterators/binary_from_base64.hpp>
Chris@16: #include <boost/archive/iterators/transform_width.hpp>
Chris@16: 
Chris@101: namespace boost {
Chris@16: namespace archive {
Chris@16: 
Chris@101: namespace detail {
Chris@16:     template<class CharType>
Chris@101:     static inline bool is_whitespace(CharType c);
Chris@16: 
Chris@16:     template<>
Chris@101:     inline bool is_whitespace(char t){
Chris@16:         return 0 != std::isspace(t);
Chris@16:     }
Chris@16: 
Chris@16:     #ifndef BOOST_NO_CWCHAR
Chris@16:     template<>
Chris@101:     inline bool is_whitespace(wchar_t t){
Chris@16:         return 0 != std::iswspace(t);
Chris@16:     }
Chris@16:     #endif
Chris@101: } // detail
Chris@16: 
Chris@16: // translate base64 text into binary and copy into buffer
Chris@16: // until buffer is full.
Chris@16: template<class IStream>
Chris@16: BOOST_ARCHIVE_OR_WARCHIVE_DECL(void)
Chris@16: basic_text_iprimitive<IStream>::load_binary(
Chris@16:     void *address, 
Chris@16:     std::size_t count
Chris@16: ){
Chris@101:     typedef typename IStream::char_type CharType;
Chris@16:     
Chris@16:     if(0 == count)
Chris@16:         return;
Chris@16:         
Chris@16:     BOOST_ASSERT(
Chris@16:         static_cast<std::size_t>((std::numeric_limits<std::streamsize>::max)())
Chris@16:         > (count + sizeof(CharType) - 1)/sizeof(CharType)
Chris@16:     );
Chris@16:         
Chris@16:     if(is.fail())
Chris@16:         boost::serialization::throw_exception(
Chris@16:             archive_exception(archive_exception::input_stream_error)
Chris@16:         );
Chris@16:     // convert from base64 to binary
Chris@101:     typedef typename
Chris@16:         iterators::transform_width<
Chris@16:             iterators::binary_from_base64<
Chris@16:                 iterators::remove_whitespace<
Chris@16:                     iterators::istream_iterator<CharType>
Chris@16:                 >
Chris@16:                 ,CharType
Chris@16:             >
Chris@16:             ,8
Chris@16:             ,6
Chris@16:             ,CharType
Chris@16:         > 
Chris@16:         binary;
Chris@16:         
Chris@16:     binary i = binary(
Chris@16:         BOOST_MAKE_PFTO_WRAPPER(
Chris@16:             iterators::istream_iterator<CharType>(is)
Chris@16:         )
Chris@16:     );
Chris@16: 
Chris@16:     char * caddr = static_cast<char *>(address);
Chris@16:     
Chris@16:     // take care that we don't increment anymore than necessary
Chris@16:     while(count-- > 0){
Chris@16:         *caddr++ = static_cast<char>(*i++);
Chris@16:     }
Chris@16: 
Chris@16:     // skip over any excess input
Chris@16:     for(;;){
Chris@101:         typename IStream::int_type r;
Chris@16:         r = is.get();
Chris@16:         if(is.eof())
Chris@16:             break;
Chris@101:         if(detail::is_whitespace(static_cast<CharType>(r)))
Chris@16:             break;
Chris@16:     }
Chris@16: }
Chris@16:     
Chris@16: template<class IStream>
Chris@16: BOOST_ARCHIVE_OR_WARCHIVE_DECL(BOOST_PP_EMPTY())
Chris@16: basic_text_iprimitive<IStream>::basic_text_iprimitive(
Chris@16:     IStream  &is_,
Chris@16:     bool no_codecvt
Chris@16: ) :
Chris@16: #ifndef BOOST_NO_STD_LOCALE
Chris@16:     is(is_),
Chris@16:     flags_saver(is_),
Chris@16:     precision_saver(is_),
Chris@16:     locale_saver(* is_.rdbuf())
Chris@16: {
Chris@16:     if(! no_codecvt){
Chris@16:         archive_locale.reset(
Chris@16:             add_facet(
Chris@101:                 std::locale::classic(),
Chris@101:                 new boost::archive::codecvt_null<typename IStream::char_type>
Chris@16:             )
Chris@16:         );
Chris@101:         //is.imbue(* archive_locale);
Chris@16:     }
Chris@16:     is >> std::noboolalpha;
Chris@16: }
Chris@16: #else
Chris@16:     is(is_),
Chris@16:     flags_saver(is_),
Chris@16:     precision_saver(is_)
Chris@16: {}
Chris@16: #endif
Chris@16: 
Chris@16: template<class IStream>
Chris@16: BOOST_ARCHIVE_OR_WARCHIVE_DECL(BOOST_PP_EMPTY())
Chris@16: basic_text_iprimitive<IStream>::~basic_text_iprimitive(){
Chris@16:     is.sync();
Chris@16: }
Chris@16: 
Chris@16: } // namespace archive
Chris@16: } // namespace boost