| // 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 | |
| //--------------------------------------------------------------------------------------// | |
| // 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/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_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_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 |
https://github.com/chigraph/chigraph/blob/master/third_party/boost/filesystem/windows_file_codecvt.cpp
原文：http://www.cnblogs.com/findumars/p/7989277.html