#!/usr/bin/env fish

function ds-patch -d 'Patches a Nintendo DS game' -a zip xp
	set out (basename "$zip" .zip).nds
	set tmp (mktemp -d)

	unzip "$zip" -d "$tmp"
	xdelta3 -d -s "$tmp/"*.nds "$xp" "$tmp/patched.nds"
	ndstrim "$tmp/patched.nds" "$out"

	rm -rf "$tmp"
end

## EOF