How to handle a string that contains multiple bits of status

[troffasky]

I am referring to the NUT 'upsc' command and how this template handles the ups.status output:

https://github.com/delin/Zabbix-NUT-Template/blob/master/sh/ups_status.sh

I think that it can return many combinations in there; I have seen three so far and have added a few of them but this is pretty tedious stuff.
Ideally the agent-side manipulation of this string would be eliminated completely but value maps can't handle strings, only numeric or single-character, hence that element of the script.

What would be a better way to handle this data format?