1 // filesystem windows_file_codecvt.cpp -----------------------------------------// 2 3 // Copyright Beman Dawes 2009 4 5 // Distributed under the Boost Software License, Version 1.0. 6 // See http://www.boost.org/LICENSE_1_0.txt 7 8 // Library home page: http://www.boost.org/libs/filesystem 9 10 //--------------------------------------------------------------------------------------// 11 12 // define BOOST_FILESYSTEM_SOURCE so that <boost/system/config.hpp> knows 13 // the library is being built (possibly exporting rather than importing code) 14 #define BOOST_FILESYSTEM_SOURCE 15 16 #ifndef BOOST_SYSTEM_NO_DEPRECATED 17 # define BOOST_SYSTEM_NO_DEPRECATED 18 #endif 19 20 #include <boost/filesystem/config.hpp> 21 #include <cwchar> // for mbstate_t 22 23 #ifdef BOOST_WINDOWS_API 24 25 #include "windows_file_codecvt.hpp" 26 27 // Versions of MinGW prior to GCC 4.6 requires this 28 #ifndef WINVER 29 # define WINVER 0x0500 30 #endif 31 32 #include <windows.h> 33 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) const34 std::codecvt_base::result windows_file_codecvt::do_in( 35 std::mbstate_t &, 36 const char* from, const char* from_end, const char*& from_next, 37 wchar_t* to, wchar_t* to_end, wchar_t*& to_next) const 38 { 39 UINT codepage = AreFileApisANSI() ? CP_ACP : CP_OEMCP; 40 41 int count; 42 if ((count = ::MultiByteToWideChar(codepage, MB_PRECOMPOSED, from, 43 from_end - from, to, to_end - to)) == 0) 44 { 45 return error; // conversion failed 46 } 47 48 from_next = from_end; 49 to_next = to + count; 50 *to_next = L'\0'; 51 return ok; 52 } 53 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) const54 std::codecvt_base::result windows_file_codecvt::do_out( 55 std::mbstate_t &, 56 const wchar_t* from, const wchar_t* from_end, const wchar_t* & from_next, 57 char* to, char* to_end, char* & to_next) const 58 { 59 UINT codepage = AreFileApisANSI() ? CP_ACP : CP_OEMCP; 60 61 int count; 62 if ((count = ::WideCharToMultiByte(codepage, WC_NO_BEST_FIT_CHARS, from, 63 from_end - from, to, to_end - to, 0, 0)) == 0) 64 { 65 return error; // conversion failed 66 } 67 68 from_next = from_end; 69 to_next = to + count; 70 *to_next = '\0'; 71 return ok; 72 } 73 74 # endif // BOOST_WINDOWS_API 75 76