Function svsprintf

lite/src/misc.cpp:33–64

namespace {
std::string svsprintf(const char* fmt, va_list ap_orig) {
    int size = 100; /* Guess we need no more than 100 bytes */
    char* p;

    if ((p = (char*)malloc(size)) == nullptr)
        return "svsprintf: malloc failed";

    for (;;) {
        va_list ap;
        va_copy(ap, ap_orig);
        int n = vsnprintf(p, size, fmt, ap);
        va_end(ap);

        if (n < 0)
            return "svsprintf: vsnprintf failed";

        if (n < size) {
            std::string rst(p);
            free(p);
            return rst;
        }

        size = n + 1;

        char* np = (char*)realloc(p, size);
        if (!np) {
            free(p);
            return "svsprintf: realloc failed";
        } else
            p = np;
    }
}
}  // namespace

void lite::set_log_level(LiteLogLevel l) {