lib/libUPnP/Neptune/Source/System/WinRT/NptWinRtUtils.h

   1 /*****************************************************************
   2 |
   3 |   Neptune - WinRT Utilities
   4 |
   5 |   (c) 2001-2012 Gilles Boccon-Gibod
   6 |   Author: Gilles Boccon-Gibod (bok@bok.net)
   7 |
   8  ****************************************************************/
   9
  10 /*----------------------------------------------------------------------
  11  |   NPT_WinRtUtils
  12  +---------------------------------------------------------------------*/
  13 class NPT_WinRtUtils {
  14 public:
  15     // unicode/ascii conversion
  16     static LPWSTR A2WHelper(LPWSTR lpw, LPCSTR lpa, int nChars, UINT acp);
  17     static LPSTR W2AHelper(LPSTR lpa, LPCWSTR lpw, int nChars, UINT acp);
  18     static size_t LStrLenW(STRSAFE_LPCWSTR lpw);
  19 };
  20
  21 /*----------------------------------------------------------------------
  22 |   macros
  23 +---------------------------------------------------------------------*/
  24 /* UNICODE support */
  25 #define NPT_WINRT_USE_CHAR_CONVERSION int _convert = 0; LPCWSTR _lpw = NULL; LPCSTR _lpa = NULL
  26
  27 #define NPT_WINRT_A2W(lpa) (\
  28     ((_lpa = lpa) == NULL) ? NULL : (\
  29     _convert = (int)(strlen(_lpa)+1),\
  30     (INT_MAX/2<_convert)? NULL :  \
  31     NPT_WinRtUtils::A2WHelper((LPWSTR) alloca(_convert*sizeof(WCHAR)), _lpa, _convert, CP_UTF8)))
  32
  33 /* +2 instead of +1 temporary fix for Chinese characters */
  34 #define NPT_WINRT_W2A(lpw) (\
  35     ((_lpw = lpw) == NULL) ? NULL : (\
  36     (_convert = (NPT_WinRtUtils::LStrLenW(_lpw)+2), \
  37     (_convert>INT_MAX/2) ? NULL : \
  38     NPT_WinRtUtils::W2AHelper((LPSTR) alloca(_convert*sizeof(WCHAR)), _lpw, _convert*sizeof(WCHAR), CP_UTF8))))
  39