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// filesystem windows_file_codecvt.cpp -----------------------------------------//
// Copyright Beman Dawes 2009
// Distributed under the Boost Software License, Version 1.0.
// See http://www.boost.org/LICENSE_1_0.txt
// Library home page: http://www.boost.org/libs/filesystem
//--------------------------------------------------------------------------------------//
#include <boost/config.hpp>
#if !defined( BOOST_NO_STD_WSTRING )
// Boost.Filesystem V3 and later requires std::wstring support.
// During the transition to V3, libraries are compiled with both V2 and V3 sources.
// On old compilers that don't support V3 anyhow, we just skip everything so the compile
// will succeed and the library can be built.
// define BOOST_FILESYSTEM_SOURCE so that <boost/system/config.hpp> knows
// the library is being built (possibly exporting rather than importing code)
#define BOOST_FILESYSTEM_SOURCE
#ifndef BOOST_SYSTEM_NO_DEPRECATED
# define BOOST_SYSTEM_NO_DEPRECATED
#endif
#include <boost/filesystem/v3/config.hpp>
#include <cwchar> // for mbstate_t
#ifdef BOOST_WINDOWS_API
#include "windows_file_codecvt.hpp"
// Versions of MinGW prior to GCC 4.6 requires this
#ifndef WINVER
# define WINVER 0x0500
#endif
#include <windows.h>
std::codecvt_base::result windows_file_codecvt::do_in(
std::mbstate_t &,
const char* from, const char* from_end, const char*& from_next,
wchar_t* to, wchar_t* to_end, wchar_t*& to_next) const
{
UINT codepage = AreFileApisANSI() ? CP_THREAD_ACP : CP_OEMCP;
int count;
if ((count = ::MultiByteToWideChar(codepage, MB_PRECOMPOSED, from,
from_end - from, to, to_end - to)) == 0)
{
return error; // conversion failed
}
from_next = from_end;
to_next = to + count;
*to_next = L'\0';
return ok;
}
std::codecvt_base::result windows_file_codecvt::do_out(
std::mbstate_t &,
const wchar_t* from, const wchar_t* from_end, const wchar_t* & from_next,
char* to, char* to_end, char* & to_next) const
{
UINT codepage = AreFileApisANSI() ? CP_THREAD_ACP : CP_OEMCP;
int count;
if ((count = ::WideCharToMultiByte(codepage, WC_NO_BEST_FIT_CHARS, from,
from_end - from, to, to_end - to, 0, 0)) == 0)
{
return error; // conversion failed
}
from_next = from_end;
to_next = to + count;
*to_next = '\0';
return ok;
}
# endif // BOOST_WINDOWS_API
#endif // no wide character support
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