137 lines
3.7 KiB
C++
137 lines
3.7 KiB
C++
#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
|