| #ifndef BOOST_ARCHIVE_ITERATORS_ESCAPE_HPP |
| #define BOOST_ARCHIVE_ITERATORS_ESCAPE_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 |
| // escape.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> // NULL |
| |
| #include <boost/config.hpp> // for BOOST_DEDUCED_TYPENAME |
| #include <boost/iterator/iterator_adaptor.hpp> |
| #include <boost/iterator/iterator_traits.hpp> |
| |
| namespace boost { |
| namespace archive { |
| namespace iterators { |
| |
| /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8 |
| // insert escapes into text |
| |
| template<class Derived, class Base> |
| class escape : |
| public boost::iterator_adaptor< |
| Derived, |
| Base, |
| BOOST_DEDUCED_TYPENAME boost::iterator_value<Base>::type, |
| single_pass_traversal_tag, |
| BOOST_DEDUCED_TYPENAME boost::iterator_value<Base>::type |
| > |
| { |
| typedef BOOST_DEDUCED_TYPENAME boost::iterator_value<Base>::type base_value_type; |
| typedef BOOST_DEDUCED_TYPENAME boost::iterator_reference<Base>::type reference_type; |
| friend class boost::iterator_core_access; |
| |
| typedef BOOST_DEDUCED_TYPENAME boost::iterator_adaptor< |
| Derived, |
| Base, |
| base_value_type, |
| single_pass_traversal_tag, |
| base_value_type |
| > super_t; |
| |
| typedef escape<Derived, Base> this_t; |
| |
| void dereference_impl() { |
| m_current_value = static_cast<Derived *>(this)->fill(m_bnext, m_bend); |
| m_full = true; |
| } |
| |
| //Access the value referred to |
| reference_type dereference() const { |
| if(!m_full) |
| const_cast<this_t *>(this)->dereference_impl(); |
| return m_current_value; |
| } |
| |
| bool equal(const this_t & rhs) const { |
| if(m_full){ |
| if(! rhs.m_full) |
| const_cast<this_t *>(& rhs)->dereference_impl(); |
| } |
| else{ |
| if(rhs.m_full) |
| const_cast<this_t *>(this)->dereference_impl(); |
| } |
| if(m_bnext != rhs.m_bnext) |
| return false; |
| if(this->base_reference() != rhs.base_reference()) |
| return false; |
| return true; |
| } |
| |
| void increment(){ |
| if(++m_bnext < m_bend){ |
| m_current_value = *m_bnext; |
| return; |
| } |
| ++(this->base_reference()); |
| m_bnext = NULL; |
| m_bend = NULL; |
| m_full = false; |
| } |
| |
| // buffer to handle pending characters |
| const base_value_type *m_bnext; |
| const base_value_type *m_bend; |
| bool m_full; |
| base_value_type m_current_value; |
| public: |
| escape(Base base) : |
| super_t(base), |
| m_bnext(NULL), |
| m_bend(NULL), |
| m_full(false) |
| { |
| } |
| }; |
| |
| } // namespace iterators |
| } // namespace archive |
| } // namespace boost |
| |
| #endif // BOOST_ARCHIVE_ITERATORS_ESCAPE_HPP |