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

   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 |   includes
  12 +---------------------------------------------------------------------*/
  13 #include "NptWinRtPch.h"
  14 #include "NptWinRtUtils.h"
  15
  16 /*----------------------------------------------------------------------
  17 |   NPT_WinRtUtils::A2WHelper
  18 +---------------------------------------------------------------------*/
  19 LPWSTR
  20 NPT_WinRtUtils::A2WHelper(LPWSTR lpw, LPCSTR lpa, int nChars, UINT acp)
  21 {
  22     int ret;
  23
  24     assert(lpa != NULL);
  25     assert(lpw != NULL);
  26     if (lpw == NULL || lpa == NULL) return NULL;
  27
  28     lpw[0] = '\0';
  29     ret = MultiByteToWideChar(acp, 0, lpa, -1, lpw, nChars);
  30     if (ret == 0) {
  31         assert(0);
  32         return NULL;
  33     }
  34     return lpw;
  35 }
  36
  37 /*----------------------------------------------------------------------
  38 |   NPT_WinRtUtils::W2AHelper
  39 +---------------------------------------------------------------------*/
  40 LPSTR
  41 NPT_WinRtUtils::W2AHelper(LPSTR lpa, LPCWSTR lpw, int nChars, UINT acp)
  42 {
  43     int ret;
  44
  45     assert(lpa != NULL);
  46     assert(lpw != NULL);
  47     if (lpa == NULL || lpw == NULL) return NULL;
  48
  49     lpa[0] = '\0';
  50     ret = WideCharToMultiByte(acp, 0, lpw, -1, lpa, nChars, NULL, NULL);
  51     if (ret == 0) {
  52         int error = GetLastError();
  53         assert(error);
  54         return NULL;
  55     }
  56     return lpa;
  57 }
  58
  59 /*----------------------------------------------------------------------
  60 |   NPT_WinRtUtils::LStrLenW
  61 +---------------------------------------------------------------------*/
  62 size_t
  63 NPT_WinRtUtils::LStrLenW(STRSAFE_LPCWSTR lpw)
  64 {
  65         size_t len = 0;
  66         HRESULT result = StringCchLengthW(lpw, STRSAFE_MAX_CCH, &len);
  67         if (S_OK == result) {
  68                 return len;
  69         } else {
  70                 return INT_MAX;
  71         }
  72 }
  73