#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 <boost/assert.hpp> | |
#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 | |
BOOST_ASSERT(-1 != m_bend); | |
BOOST_ASSERT((std::size_t)m_bend <= sizeof(m_buffer)); | |
BOOST_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 |