Function sprintf

Source/Common/Utils.cpp:204–234

}

std::string sprintf(const char* fmt, ...) {
	int size = 1024;
	std::vector<char> buffer(size);

	va_list args;
	va_start(args, fmt);
	int n = vsnprintf(buffer.data(), size, fmt, args);
	va_end(args);

	if (n < 0) {
		// vsnprintf failed
		return "";
	} else if (n < size) {
		// formatted string successfully placed in buffer
		return std::string(buffer.data(), n);
	} else {
		// buffer is not enough, need to reallocate
		size = n + 1;
		buffer.resize(size);

		va_start(args, fmt);
		n = vsnprintf(buffer.data(), size, fmt, args);
		va_end(args);

		if (n < 0 || n >= size) {
			return "";
		}

		return std::string(buffer.data(), n);
	}
}

NS_DORA_END