1@echo off
2set ext=
3set file=
4
5:loop
6@set arg=%1
7if "%arg%" == "" goto end
8if "%arg:~0,1%" == "+" goto next
9if "%arg%" == "-t" goto next
10if "%arg%" == "ds" goto ds
11if "%arg%" == "DS" goto ds
12if "%arg%" == "dlv" goto dlv
13if "%arg%" == "DLV" goto dlv
14if "%arg%" == "dnskey" goto dnskey
15if "%arg%" == "DNSKEY" goto dnskey
16set file=%arg%
17goto next
18
19:ds
20set ext=ds
21goto next
22
23:dlv
24set ext=dlv
25goto next
26
27:dnskey
28set ext=dnskey
29goto next
30
31:next
32shift
33goto loop
34
35:end
36
37set name=%file%.%ext%.db
38type %name%
39