#include "StdAfx.h"
//#include <windows.h>

#include "Strings.h"
#include <stdarg.h>
//#include <varargs.h>
#include <vector>


String format(const String& format, ...) {
    String s;
    size_t size = 256;  // arbitrary buffer size
    va_list argList;

    do {
        std::vector<String::value_type> buf(size);
        
        va_start(argList, format);

        int n = _vsntprintf_s(buf.data(), size, _TRUNCATE, format.c_str(), argList);

        va_end(argList);
        
        if (n < 0) {
            size *= 2;
            continue;
        }
        s = buf.data();
    } while (false);

    return s;
}