115 lines
3.1 KiB
Plaintext
115 lines
3.1 KiB
Plaintext
#ifndef BOOST_ARCHIVE_ITERATORS_ESCAPE_HPP
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#define BOOST_ARCHIVE_ITERATORS_ESCAPE_HPP
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// MS compatible compilers support #pragma once
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#if defined(_MSC_VER)
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# pragma once
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#endif
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/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
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// escape.hpp
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// (C) Copyright 2002 Robert Ramey - http://www.rrsd.com .
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// Use, modification and distribution is subject to the Boost Software
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// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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// See http://www.boost.org for updates, documentation, and revision history.
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#include <boost/assert.hpp>
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#include <cstddef> // NULL
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#include <boost/iterator/iterator_adaptor.hpp>
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#include <boost/iterator/iterator_traits.hpp>
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namespace boost {
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namespace archive {
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namespace iterators {
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/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
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// insert escapes into text
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template<class Derived, class Base>
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class escape :
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public boost::iterator_adaptor<
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Derived,
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Base,
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typename boost::iterator_value<Base>::type,
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single_pass_traversal_tag,
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typename boost::iterator_value<Base>::type
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>
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{
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typedef typename boost::iterator_value<Base>::type base_value_type;
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typedef typename boost::iterator_reference<Base>::type reference_type;
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friend class boost::iterator_core_access;
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typedef typename boost::iterator_adaptor<
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Derived,
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Base,
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base_value_type,
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single_pass_traversal_tag,
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base_value_type
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> super_t;
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typedef escape<Derived, Base> this_t;
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void dereference_impl() {
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m_current_value = static_cast<Derived *>(this)->fill(m_bnext, m_bend);
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m_full = true;
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}
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//Access the value referred to
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reference_type dereference() const {
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if(!m_full)
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const_cast<this_t *>(this)->dereference_impl();
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return m_current_value;
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}
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bool equal(const this_t & rhs) const {
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if(m_full){
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if(! rhs.m_full)
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const_cast<this_t *>(& rhs)->dereference_impl();
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}
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else{
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if(rhs.m_full)
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const_cast<this_t *>(this)->dereference_impl();
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}
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if(m_bnext != rhs.m_bnext)
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return false;
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if(this->base_reference() != rhs.base_reference())
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return false;
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return true;
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}
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void increment(){
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if(++m_bnext < m_bend){
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m_current_value = *m_bnext;
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return;
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}
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++(this->base_reference());
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m_bnext = NULL;
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m_bend = NULL;
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m_full = false;
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}
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// buffer to handle pending characters
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const base_value_type *m_bnext;
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const base_value_type *m_bend;
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bool m_full;
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base_value_type m_current_value;
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public:
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escape(Base base) :
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super_t(base),
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m_bnext(NULL),
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m_bend(NULL),
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m_full(false)
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{
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}
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};
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} // namespace iterators
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} // namespace archive
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} // namespace boost
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#endif // BOOST_ARCHIVE_ITERATORS_ESCAPE_HPP
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