| #ifndef BOOST_ARCHIVE_ITERATORS_WCHAR_FROM_MB_HPP |
| #define BOOST_ARCHIVE_ITERATORS_WCHAR_FROM_MB_HPP |
| |
| // MS compatible compilers support #pragma once |
| #if defined(_MSC_VER) && (_MSC_VER >= 1020) |
| # pragma once |
| #endif |
| |
| /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8 |
| // wchar_from_mb.hpp |
| |
| // (C) Copyright 2002 Robert Ramey - http://www.rrsd.com . |
| // Use, modification and distribution is subject to 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 <cassert> |
| #include <cctype> |
| #include <cstddef> // size_t |
| #include <cstdlib> // mblen |
| |
| #include <boost/config.hpp> // for BOOST_DEDUCED_TYPENAME |
| #if defined(BOOST_NO_STDC_NAMESPACE) |
| namespace std{ |
| using ::mblen; |
| using ::mbtowc; |
| } // namespace std |
| #endif |
| |
| #include <boost/serialization/throw_exception.hpp> |
| #include <boost/serialization/pfto.hpp> |
| |
| #include <boost/iterator/iterator_adaptor.hpp> |
| #include <boost/archive/iterators/dataflow_exception.hpp> |
| |
| namespace boost { |
| namespace archive { |
| namespace iterators { |
| |
| /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8 |
| // class used by text archives to translate char strings to wchar_t |
| // strings of the currently selected locale |
| template<class Base> |
| class wchar_from_mb |
| : public boost::iterator_adaptor< |
| wchar_from_mb<Base>, |
| Base, |
| wchar_t, |
| single_pass_traversal_tag, |
| wchar_t |
| > |
| { |
| friend class boost::iterator_core_access; |
| typedef BOOST_DEDUCED_TYPENAME boost::iterator_adaptor< |
| wchar_from_mb<Base>, |
| Base, |
| wchar_t, |
| single_pass_traversal_tag, |
| wchar_t |
| > super_t; |
| |
| typedef wchar_from_mb<Base> this_t; |
| |
| wchar_t drain(); |
| |
| wchar_t dereference_impl() { |
| if(! m_full){ |
| m_current_value = drain(); |
| m_full = true; |
| } |
| return m_current_value; |
| } |
| |
| wchar_t dereference() const { |
| return const_cast<this_t *>(this)->dereference_impl(); |
| } |
| |
| void increment(){ |
| dereference_impl(); |
| m_full = false; |
| ++(this->base_reference()); |
| }; |
| |
| wchar_t m_current_value; |
| bool m_full; |
| |
| public: |
| // make composible buy using templated constructor |
| template<class T> |
| wchar_from_mb(BOOST_PFTO_WRAPPER(T) start) : |
| super_t(Base(BOOST_MAKE_PFTO_WRAPPER(static_cast< T >(start)))), |
| m_full(false) |
| {} |
| // intel 7.1 doesn't like default copy constructor |
| wchar_from_mb(const wchar_from_mb & rhs) : |
| super_t(rhs.base_reference()), |
| m_full(rhs.m_full) |
| {} |
| }; |
| |
| template<class Base> |
| wchar_t wchar_from_mb<Base>::drain(){ |
| char buffer[9]; |
| char * bptr = buffer; |
| char val; |
| for(std::size_t i = 0; i++ < (unsigned)MB_CUR_MAX;){ |
| val = * this->base_reference(); |
| *bptr++ = val; |
| int result = std::mblen(buffer, i); |
| if(-1 != result) |
| break; |
| ++(this->base_reference()); |
| } |
| wchar_t retval; |
| int result = std::mbtowc(& retval, buffer, MB_CUR_MAX); |
| if(0 >= result) |
| boost::serialization::throw_exception(iterators::dataflow_exception( |
| iterators::dataflow_exception::invalid_conversion |
| )); |
| return retval; |
| } |
| |
| } // namespace iterators |
| } // namespace archive |
| } // namespace boost |
| |
| #endif // BOOST_ARCHIVE_ITERATORS_WCHAR_FROM_MB_HPP |