Make a progress bar out of info, which looks like:
        (1/2): [########################################] 100% master.zip

def _bar(self, target_name, current, total):
        """
        Make a progress bar out of info, which looks like:
        (1/2): [########################################] 100% master.zip
        """
        bar_len = 30

        if total is None:
            state = 0
            percent = "?% "
        else:
            total = int(total)
            state = int((100 * current) / total) if current < total else 100
            percent = str(state) + "% "

        if self._n_total > 1:
            num = "({}/{}): ".format(self._n_finished + 1, self._n_total)
        else:
            num = ""

        n_sh = int((state * bar_len) / 100)
        n_sp = bar_len - n_sh
        pbar = "[" + "#" * n_sh + " " * n_sp + "] "

        return num + pbar + percent + target_name