C++ (Cpp) __mbtowc Examples

Example #1

File: btowc.c Project: 32bitmicro/newlib-nano-1.0

wint_t
btowc (int c)
{
  mbstate_t mbs;
  int retval = 0;
  wchar_t pwc;
  unsigned char b;

  if (c == EOF)
    return WEOF;

  b = (unsigned char)c;

  /* Put mbs in initial state. */
  memset (&mbs, '\0', sizeof (mbs));

  _REENT_CHECK_MISC(_REENT);

  retval = __mbtowc (_REENT, &pwc, &b, 1, __locale_charset (), &mbs);

  if (retval != 0 && retval != 1)
    return WEOF;

  return (wint_t)pwc;
}

Example #2

File: c_locale_win32.c Project: hackshields/antivirus

  size_t _Locale_mbtowc(struct _Locale_ctype *ltype, wchar_t *to,
                        const char *from, size_t n, mbstate_t *shift_state) {
    CPINFO ci;
    int result;

    GetCPInfo(ltype->cp, &ci);
    if(ci.MaxCharSize == 1) { // Single byte encoding.
	    *shift_state = (mbstate_t)0;
	    result = MultiByteToWideChar(ltype->cp, MB_PRECOMPOSED, from, 1, to, 1);
	    if(result == 0) return (size_t)-1;
	    return result;
    }
    else { // Multi byte encoding.
    	size_t retval, count = 0;
    	while(n--) {
	      retval = __mbtowc(ltype, to, *from, shift_state);
	      if(retval == -2) { from++; count++; }
	      else if(retval == -1) return -1;
	      else return count+retval;
	    }
    	if(retval == -2) return (size_t)-2;

    	return n;
    }
  }