check_verbs

check_verbs.bat

@echo off
setlocal enableDelayedExpansion

if not defined bin (
  :: set bin to current directory
  set bin=%~dp0
)

echo current dir %bin%

set verbs=;open;delete;version;

echo checking verb...
call:checkMatch "%verbs%" %* || ( 
 echo.
 echo verb is ok
 exit /b 0
)

echo invalid verb, ava is open, delete, version
exit /b 1



:checkMatch
  set verbs=%~1
  set verb=""
  shift
  
  :loop
    if "%~1"=="" ( goto:done )
    set arg=%~1
    shift
	
	echo arg is %arg%
    if "%arg:~0,1%"=="-" ( goto:loop )
    if !verb!=="" if "!verbs:;%arg%;=!" neq "!verbs!" (
	  echo find verb !arg!
      set verb=!arg!
      goto:loop
    )

  :done
  if !verb! neq "" exit /b 1
  exit /b 0