Solved

How to test for missing parm with batch FOR command

Posted on 2004-08-30
2
162 Views
Last Modified: 2010-04-13
I have a batch script which uses the FOR command to read a file of parameters.  The parameters are 2 per line and separated by a semicolon.  How can determine if a semicolon was not used?  Here is what I've tried so far:
for /F "tokens=1,2,* skip=1 delims=;" %%A in (%1) do (if %%B == "" echo missing semicolon)  It would be nice if I could also distiguish between a missing semicolon and a missing second parameter.  

0
Comment
Question by:rdclk23
2 Comments
 
LVL 83

Accepted Solution

by:
oBdA earned 500 total points
ID: 11936441
Basically, there's not too much of a difference between a missing delimiter and a missing argument, but the check is possible.
Note that I used "in 'type %1'" instead of "in (%1)"; this prevents problems if %1 contains spaces.
And in case you see the "call :<label>" construction for the first time: this is the batch version of a subroutine call. Enter "help call" for more information.

@echo off
setlocal
for /f "skip=1 delims=" %%a in ('type %1') do (
  set Line=%%~a
  call :process
)
goto leave

:process
if "%Line%"=="%Line:;=%" (
  echo Missing delimiter: %Line%
  goto :eof
)
for /f "tokens=1,2 delims=;" %%a in ("%Line%") do (
  set Arg1=%%~a
  set Arg2=%%~b
)
if "%Arg2%"=="" (
  echo Missing argument:  %Line%
  goto :eof
)
echo Correct arguments: [%Arg1%][%Arg2%]
:: *** Handle your arguments here:
:: ...
goto :eof


:leave
0
 

Author Comment

by:rdclk23
ID: 12048091
Thanks!  Worked Great!  It took me a while to figure out what "%Line:;=" was doing, but I now see that you are using string replacement.
0

Featured Post

NAS Cloud Backup Strategies

This article explains backup scenarios when using network storage. We review the so-called “3-2-1 strategy” and summarize the methods you can use to send NAS data to the cloud

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

NTFS file system has been developed by Microsoft that is widely used by Windows NT operating system and its advanced versions. It is the mostly used over FAT file system as it provides superior features like reliability, security, storage, efficienc…
The question appears often enough, how do I transfer my data from my old server to the new server while preserving file shares, share permissions, and NTFS permisions.  Here are my tips for handling such a transfer.
This Micro Tutorial will teach you how to censor certain areas of your screen. The example in this video will show a little boy's face being blurred. This will be demonstrated using Adobe Premiere Pro CS6.
This Micro Tutorial demonstrates using Microsoft Excel pivot tables, how to reverse engineer competitors' marketing strategies through backlinks.

803 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question