Unicode Porting Issues !!

[santoshthankach]

Hi All,

I have function like follows:

void XYZ(char *format,...)
{
...
va_list list;
char temp[256];

va_start( list, format );
vsprintf( temp, format, list );
...

}

I need to port this function into unicode, i.e. "format" can have string containing characters from other languages. Do we have some unicode compliant (multi byte) version of APIs: va_start(), vsprintf() that can get 2 byte characters.

I did tried using "wchar_t" instead of "char" and code did got compiled after that but is the correct way of doing this.

Please let me know of your suggestions.

Thanks in advance,
Santosh Thankachan

[ovidiucucu]

The UNICODE version of vsprintf is vswprintf. va_list and va_start can be used also in UNICODE.
void FormatW(wchar_t*& buffer, const wchar_t* format,...)
{
va_list args;
va_start(args, format);
vswprintf(buffer, format, args);
}

// somehwere call...
wchar_t* buffer = new wchar_t[128];
FormatW(buffer, L"XXX-%s-XXX{{ÈÇ", L"ASDFGHJKL");
// ...
delete []buffer;
Now, to asure it compile in both UNICODE and non-UNICODE, use the macros defined in TCHAR.H (_vstprintf, _T, and so on).

void FormatT(LPTSTR& buffer, LPCTSTR format,...)
{
va_list args;
va_start(args, format);
_vstprintf(buffer, format, args);
}

// somehwere call...
LPTSTR buffer = new TCHAR[128];
FormatT(buffer, _T("XXX-%s-XXX{{ÈÇ"), _T("ASDFGHJKL"));
// ...
delete []buffer;

[santoshthankach]

Thanks ovidiu,

I have already started using the same. Thanks for your code snippet.

Santosh