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 namespace boost {
  23 namespace filesystem {
  24 namespace detail {
  25
  26 std::codecvt_base::result windows_file_codecvt::do_in(
  27     std::mbstate_t&,
  28     const char* from, const char* from_end, const char*& from_next,
  29     wchar_t* to, wchar_t* to_end, wchar_t*& to_next) const
  30 {
  31     UINT codepage = AreFileApisANSI() ? CP_ACP : CP_OEMCP;
  32
  33     int count;
  34     if ((count = ::MultiByteToWideChar(codepage, MB_PRECOMPOSED, from, static_cast< int >(from_end - from), to, static_cast< int >(to_end - to))) == 0)
  35     {
  36         return error; // conversion failed
  37     }
  38
  39     from_next = from_end;
  40     to_next = to + count;
  41     *to_next = L'\0';
  42     return ok;
  43 }
  44
  45 std::codecvt_base::result windows_file_codecvt::do_out(
  46     std::mbstate_t&,
  47     const wchar_t* from, const wchar_t* from_end, const wchar_t*& from_next,
  48     char* to, char* to_end, char*& to_next) const
  49 {
  50     UINT codepage = AreFileApisANSI() ? CP_ACP : CP_OEMCP;
  51
  52     int count;
  53     if ((count = ::WideCharToMultiByte(codepage, WC_NO_BEST_FIT_CHARS, from, static_cast< int >(from_end - from), to, static_cast< int >(to_end - to), 0, 0)) == 0)
  54     {
  55         return error; // conversion failed
  56     }
  57
  58     from_next = from_end;
  59     to_next = to + count;
  60     *to_next = '\0';
  61     return ok;
  62 }
  63
  64 } // namespace detail
  65 } // namespace filesystem
  66 } // namespace boost
  67
  68 #endif // BOOST_WINDOWS_API