ceph/src/boost/libs/filesystem/src/windows_file_codecvt.cpp

   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 #include "platform_config.hpp"
  13
  14 #include <cwchar>  // for mbstate_t
  15
  16 #ifdef BOOST_WINDOWS_API
  17
  18 #include "windows_file_codecvt.hpp"
  19
  20 #include <windows.h>
  21
  22 std::codecvt_base::result windows_file_codecvt::do_in(
  23   std::mbstate_t &,
  24   const char* from, const char* from_end, const char*& from_next,
  25   wchar_t* to, wchar_t* to_end, wchar_t*& to_next) const
  26 {
  27   UINT codepage = AreFileApisANSI() ? CP_ACP : CP_OEMCP;
  28
  29   int count;
  30   if ((count = ::MultiByteToWideChar(codepage, MB_PRECOMPOSED, from,
  31     static_cast<int>(from_end - from), to, static_cast<int>(to_end - to))) == 0)
  32   {
  33     return error;  // conversion failed
  34   }
  35
  36   from_next = from_end;
  37   to_next = to + count;
  38   *to_next = L'\0';
  39   return ok;
  40 }
  41
  42 std::codecvt_base::result windows_file_codecvt::do_out(
  43   std::mbstate_t &,
  44   const wchar_t* from, const wchar_t* from_end, const wchar_t*  & from_next,
  45   char* to, char* to_end, char* & to_next) const
  46 {
  47   UINT codepage = AreFileApisANSI() ? CP_ACP : CP_OEMCP;
  48
  49   int count;
  50   if ((count = ::WideCharToMultiByte(codepage, WC_NO_BEST_FIT_CHARS, from,
  51     static_cast<int>(from_end - from), to, static_cast<int>(to_end - to), 0, 0)) == 0)
  52   {
  53     return error;  // conversion failed
  54   }
  55
  56   from_next = from_end;
  57   to_next = to + count;
  58   *to_next = '\0';
  59   return ok;
  60 }
  61
  62 #endif  // BOOST_WINDOWS_API