| #ifndef BOOST_ARCHIVE_ITERATORS_MB_FROM_WCHAR_HPP |
| #define BOOST_ARCHIVE_ITERATORS_MB_FROM_WCHAR_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 |
| // mb_from_wchar.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 <cstddef> // size_t |
| #include <cstdlib> // for wctomb() |
| |
| #include <boost/config.hpp> // for BOOST_DEDUCED_TYPENAME |
| #if defined(BOOST_NO_STDC_NAMESPACE) |
| namespace std{ |
| using ::size_t; |
| using ::wctomb; |
| } // namespace std |
| #endif |
| |
| #include <boost/serialization/pfto.hpp> |
| #include <boost/iterator/iterator_adaptor.hpp> |
| |
| namespace boost { |
| namespace archive { |
| namespace iterators { |
| |
| /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8 |
| // class used by text archives to translate wide strings and to char |
| // strings of the currently selected locale |
| template<class Base> // the input iterator |
| class mb_from_wchar |
| : public boost::iterator_adaptor< |
| mb_from_wchar<Base>, |
| Base, |
| wchar_t, |
| single_pass_traversal_tag, |
| char |
| > |
| { |
| friend class boost::iterator_core_access; |
| |
| typedef BOOST_DEDUCED_TYPENAME boost::iterator_adaptor< |
| mb_from_wchar<Base>, |
| Base, |
| wchar_t, |
| single_pass_traversal_tag, |
| char |
| > super_t; |
| |
| typedef mb_from_wchar<Base> this_t; |
| |
| char dereference_impl() { |
| if(! m_full){ |
| fill(); |
| m_full = true; |
| } |
| return m_buffer[m_bnext]; |
| } |
| char dereference() const { |
| return (const_cast<this_t *>(this))->dereference_impl(); |
| } |
| |
| // test for iterator equality |
| bool equal(const mb_from_wchar<Base> & rhs) const { |
| // once the value is filled, the base_reference has been incremented |
| // so don't permit comparison anymore. |
| return |
| 0 == m_bend |
| && 0 == m_bnext |
| && this->base_reference() == rhs.base_reference() |
| ; |
| } |
| |
| void fill(){ |
| wchar_t value = * this->base_reference(); |
| #if (defined(__MINGW32__) && ((__MINGW32_MAJOR_VERSION > 3) \ |
| || ((__MINGW32_MAJOR_VERSION == 3) && (__MINGW32_MINOR_VERSION >= 8)))) |
| m_bend = std::wcrtomb(m_buffer, value, 0); |
| #else |
| m_bend = std::wctomb(m_buffer, value); |
| #endif |
| assert(-1 != m_bend); |
| assert((std::size_t)m_bend <= sizeof(m_buffer)); |
| assert(m_bend > 0); |
| m_bnext = 0; |
| } |
| |
| void increment(){ |
| if(++m_bnext < m_bend) |
| return; |
| m_bend = |
| m_bnext = 0; |
| ++(this->base_reference()); |
| m_full = false; |
| } |
| |
| // buffer to handle pending characters |
| int m_bend; |
| int m_bnext; |
| char m_buffer[9]; |
| bool m_full; |
| |
| public: |
| // make composible buy using templated constructor |
| template<class T> |
| mb_from_wchar(BOOST_PFTO_WRAPPER(T) start) : |
| super_t(Base(BOOST_MAKE_PFTO_WRAPPER(static_cast< T >(start)))), |
| m_bend(0), |
| m_bnext(0), |
| m_full(false) |
| {} |
| // intel 7.1 doesn't like default copy constructor |
| mb_from_wchar(const mb_from_wchar & rhs) : |
| super_t(rhs.base_reference()), |
| m_bend(rhs.m_bend), |
| m_bnext(rhs.m_bnext), |
| m_full(rhs.m_full) |
| {} |
| }; |
| |
| } // namespace iterators |
| } // namespace archive |
| } // namespace boost |
| |
| #endif // BOOST_ARCHIVE_ITERATORS_MB_FROM_WCHAR_HPP |