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 // 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
  34   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
  54   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