Chris@16: #ifndef BOOST_ARCHIVE_ITERATORS_UNESCAPE_HPP
Chris@16: #define BOOST_ARCHIVE_ITERATORS_UNESCAPE_HPP
Chris@16: 
Chris@16: // MS compatible compilers support #pragma once
Chris@101: #if defined(_MSC_VER)
Chris@16: # pragma once
Chris@16: #endif
Chris@16: 
Chris@16: /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
Chris@16: // unescape.hpp
Chris@16: 
Chris@16: // (C) Copyright 2002 Robert Ramey - http://www.rrsd.com . 
Chris@16: // Use, modification and distribution is subject to the Boost Software
Chris@16: // License, Version 1.0. (See 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 <boost/assert.hpp>
Chris@16: 
Chris@16: #include <boost/iterator/iterator_adaptor.hpp>
Chris@16: #include <boost/pointee.hpp>
Chris@16: 
Chris@16: namespace boost { 
Chris@16: namespace archive {
Chris@16: namespace iterators {
Chris@16: 
Chris@16: /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
Chris@16: // class used by text archives to translate char strings to wchar_t
Chris@16: // strings of the currently selected locale
Chris@16: template<class Derived, class Base>
Chris@16: class unescape 
Chris@16:     : public boost::iterator_adaptor<
Chris@16:         unescape<Derived, Base>,
Chris@16:         Base, 
Chris@101:         typename pointee<Base>::type,
Chris@16:         single_pass_traversal_tag,
Chris@101:         typename pointee<Base>::type
Chris@16:     >
Chris@16: {
Chris@16:     friend class boost::iterator_core_access;
Chris@101:     typedef typename boost::iterator_adaptor<
Chris@16:         unescape<Derived, Base>, 
Chris@16:         Base, 
Chris@101:         typename pointee<Base>::type,
Chris@16:         single_pass_traversal_tag,
Chris@101:         typename pointee<Base>::type
Chris@16:     > super_t;
Chris@16: 
Chris@16:     typedef unescape<Derived, Base> this_t;
Chris@16: public:
Chris@101:     typedef typename this_t::value_type value_type;
Chris@101:     typedef typename this_t::reference reference;
Chris@16: private:
Chris@16:     value_type dereference_impl() {
Chris@16:         if(! m_full){
Chris@16:             m_current_value = static_cast<Derived *>(this)->drain();
Chris@16:             m_full = true;
Chris@16:         }
Chris@16:         return m_current_value;
Chris@16:     }
Chris@16: 
Chris@16:     reference dereference() const {
Chris@16:         return const_cast<this_t *>(this)->dereference_impl();
Chris@16:     }
Chris@16: 
Chris@16:     value_type m_current_value;
Chris@16:     bool m_full;
Chris@16: 
Chris@16:     void increment(){
Chris@16:         ++(this->base_reference());
Chris@16:         dereference_impl();
Chris@16:         m_full = false;
Chris@16:     };
Chris@16: 
Chris@16: public:
Chris@16: 
Chris@16:     unescape(Base base) : 
Chris@16:         super_t(base),
Chris@16:         m_full(false)
Chris@16:     {}
Chris@16: 
Chris@16: };
Chris@16: 
Chris@16: } // namespace iterators
Chris@16: } // namespace archive
Chris@16: } // namespace boost
Chris@16: 
Chris@16: #endif // BOOST_ARCHIVE_ITERATORS_UNESCAPE_HPP