inline std::wstring wcsfmon_l(double value,winlocale const &l)
{
std::wostringstream ss;
ss.imbue(std::locale::classic());
ss << std::setprecision(std::numeric_limits<double>::digits10+1) << value;
std::wstring sval = ss.str();
int len = GetCurrencyFormatW(l.lcid,0,sval.c_str(),0,0,0);
std::vector<wchar_t> buf(len+1);
GetCurrencyFormatW(l.lcid,0,sval.c_str(),0,&buf.front(),len);
return &buf.front();
}
static UnicodeString &getWindowsFormat(int32_t lcid, UBool currency, UnicodeString &appendTo, const wchar_t *fmt, ...)
{
wchar_t nStackBuffer[STACK_BUFFER_SIZE];
wchar_t *nBuffer = nStackBuffer;
va_list args;
int result;
nBuffer[0] = 0x0000;
/* Due to the arguments causing a result to be <= 23 characters (+2 for NULL and minus),
we don't need to reallocate the buffer. */
va_start(args, fmt);
result = _vsnwprintf(nBuffer, STACK_BUFFER_SIZE, fmt, args);
va_end(args);
/* Just to make sure of the above statement, we add this assert */
U_ASSERT(result >=0);
// The following code is not used because _vscwprintf isn't available on MinGW at the moment.
/*if (result < 0) {
int newLength;
va_start(args, fmt);
newLength = _vscwprintf(fmt, args);
va_end(args);
nBuffer = NEW_ARRAY(UChar, newLength + 1);
va_start(args, fmt);
result = _vsnwprintf(nBuffer, newLength + 1, fmt, args);
va_end(args);
}*/
// vswprintf is sensitive to the locale set by setlocale. For some locales
// it doesn't use "." as the decimal separator, which is what GetNumberFormatW
// and GetCurrencyFormatW both expect to see.
//
// To fix this, we scan over the string and replace the first non-digits, except
// for a leading "-", with a "."
//
// Note: (nBuffer[0] == L'-') will evaluate to 1 if there is a leading '-' in the
// number, and 0 otherwise.
for (wchar_t *p = &nBuffer[nBuffer[0] == L'-']; *p != L'\0'; p += 1) {
if (*p < L'0' || *p > L'9') {
*p = L'.';
break;
}
}
wchar_t stackBuffer[STACK_BUFFER_SIZE];
wchar_t *buffer = stackBuffer;
buffer[0] = 0x0000;
if (currency) {
result = GetCurrencyFormatW(lcid, 0, nBuffer, NULL, buffer, STACK_BUFFER_SIZE);
if (result == 0) {
DWORD lastError = GetLastError();
if (lastError == ERROR_INSUFFICIENT_BUFFER) {
int newLength = GetCurrencyFormatW(lcid, 0, nBuffer, NULL, NULL, 0);
buffer = NEW_ARRAY(UChar, newLength);
buffer[0] = 0x0000;
GetCurrencyFormatW(lcid, 0, nBuffer, NULL, buffer, newLength);
}
}
} else {
result = GetNumberFormatW(lcid, 0, nBuffer, NULL, buffer, STACK_BUFFER_SIZE);
if (result == 0) {
DWORD lastError = GetLastError();
if (lastError == ERROR_INSUFFICIENT_BUFFER) {
int newLength = GetNumberFormatW(lcid, 0, nBuffer, NULL, NULL, 0);
buffer = NEW_ARRAY(UChar, newLength);
buffer[0] = 0x0000;
GetNumberFormatW(lcid, 0, nBuffer, NULL, buffer, newLength);
}
}
}
appendTo.append(buffer, (int32_t) wcslen(buffer));
if (buffer != stackBuffer) {
DELETE_ARRAY(buffer);
}
/*if (nBuffer != nStackBuffer) {
DELETE_ARRAY(nBuffer);
}*/
return appendTo;
}
