StringPrintf.cxx

 
#include "utils/StringPrintf.hxx"
 
std::string StringPrintf(const char *format, ...)
{
#ifdef __FreeRTOS__
    static const int kBufSize = 64;
#else
    static const int kBufSize = 1000;
#endif
    char buffer[kBufSize];
    va_list ap;
 
    va_start(ap, format);
    int n = vsnprintf(buffer, kBufSize, format, ap);
    va_end(ap);
    HASSERT(n >= 0);
    if (n < kBufSize)
    {
        return string(buffer, n);
    }
    string ret(n + 1, 0);
    va_start(ap, format);
    n = vsnprintf(&ret[0], ret.size(), format, ap);
    va_end(ap);
    HASSERT(n >= 0);
    ret.resize(n);
    return ret;
}