How to? Force batch to stop when error in ext command

[kontamusse]

I am converting some Bash scripts that I wrote to BTM.
One of the problems was to make sure that, whenever an external command returns a non-zero return code, the script should stop and say something meaningful.
This is what I have produced, please tell me if there is a better way.

@echo off
setlocal
alias Usage `echo Usage: downloadrepo.btm package & quit 1`
alias MustSucceed `%1 %2 %3 %4 %5 %6 %7 %8 %9 %10 & IF "%ERRORLEVEL%" NE "0" ( echo Error in %1 & quit 2 )`

IF "%1" EQ "" .OR. "%2" NE "" Usage

mkdir %1
cd %1
MustSucceed git init
MustSucceed git remote add cc "myname@myrepository.org:/var/git/%1.git"
MustSucceed git pull cc master --tags

 

[samintz]

You could use the ON ERRORLEVEL command.

@echo off
setlocal

IFF %1.==. .OR.  NOT %2.==. THEN
    echo Usage: downloadrepo.btm package
    quit 1
ENDIFF

mkdir %1
cd %1
ON ERRORLEVEL NE 0 GOTO handleit
git init
git remote add cc "myname@myrepository.org:/var/git/%1.git"
git pull cc master --tags
quit 0

handleit:
echo Error in %1
quit 2