#ifndef BOOST_ARCHIVE_ITERATORS_WCHAR_FROM_MB_HPP | |
#define BOOST_ARCHIVE_ITERATORS_WCHAR_FROM_MB_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 | |
// wchar_from_mb.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 <cctype> | |
#include <cstddef> // size_t | |
#include <cstdlib> // mblen | |
#include <boost/config.hpp> // for BOOST_DEDUCED_TYPENAME | |
#if defined(BOOST_NO_STDC_NAMESPACE) | |
namespace std{ | |
using ::mblen; | |
using ::mbtowc; | |
} // namespace std | |
#endif | |
#include <boost/serialization/throw_exception.hpp> | |
#include <boost/serialization/pfto.hpp> | |
#include <boost/iterator/iterator_adaptor.hpp> | |
#include <boost/archive/iterators/dataflow_exception.hpp> | |
namespace boost { | |
namespace archive { | |
namespace iterators { | |
/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8 | |
// class used by text archives to translate char strings to wchar_t | |
// strings of the currently selected locale | |
template<class Base> | |
class wchar_from_mb | |
: public boost::iterator_adaptor< | |
wchar_from_mb<Base>, | |
Base, | |
wchar_t, | |
single_pass_traversal_tag, | |
wchar_t | |
> | |
{ | |
friend class boost::iterator_core_access; | |
typedef BOOST_DEDUCED_TYPENAME boost::iterator_adaptor< | |
wchar_from_mb<Base>, | |
Base, | |
wchar_t, | |
single_pass_traversal_tag, | |
wchar_t | |
> super_t; | |
typedef wchar_from_mb<Base> this_t; | |
wchar_t drain(); | |
wchar_t dereference_impl() { | |
if(! m_full){ | |
m_current_value = drain(); | |
m_full = true; | |
} | |
return m_current_value; | |
} | |
wchar_t dereference() const { | |
return const_cast<this_t *>(this)->dereference_impl(); | |
} | |
void increment(){ | |
dereference_impl(); | |
m_full = false; | |
++(this->base_reference()); | |
}; | |
wchar_t m_current_value; | |
bool m_full; | |
public: | |
// make composible buy using templated constructor | |
template<class T> | |
wchar_from_mb(BOOST_PFTO_WRAPPER(T) start) : | |
super_t(Base(BOOST_MAKE_PFTO_WRAPPER(static_cast< T >(start)))), | |
m_full(false) | |
{} | |
// intel 7.1 doesn't like default copy constructor | |
wchar_from_mb(const wchar_from_mb & rhs) : | |
super_t(rhs.base_reference()), | |
m_full(rhs.m_full) | |
{} | |
}; | |
template<class Base> | |
wchar_t wchar_from_mb<Base>::drain(){ | |
char buffer[9]; | |
char * bptr = buffer; | |
char val; | |
for(std::size_t i = 0; i++ < (unsigned)MB_CUR_MAX;){ | |
val = * this->base_reference(); | |
*bptr++ = val; | |
int result = std::mblen(buffer, i); | |
if(-1 != result) | |
break; | |
++(this->base_reference()); | |
} | |
wchar_t retval; | |
int result = std::mbtowc(& retval, buffer, MB_CUR_MAX); | |
if(0 >= result) | |
boost::serialization::throw_exception(iterators::dataflow_exception( | |
iterators::dataflow_exception::invalid_conversion | |
)); | |
return retval; | |
} | |
} // namespace iterators | |
} // namespace archive | |
} // namespace boost | |
#endif // BOOST_ARCHIVE_ITERATORS_WCHAR_FROM_MB_HPP |