[ale] If there a neat way of peeling apart bash variable by delimters?

[Neal Rhodes]

Thanks.  That is a smidge more compact.  Although it doesn't quite jump
off the page w.r.t. readability. 

I was hoping for something along the lines of Progress: 
        Table = entry(1, FullName, "."). 

But I shall take a look at BASH_REMATCH. 

On Sun, 2014-09-14 at 21:38 -0400, Michael H. Warfield wrote:

> On Sun, 2014-09-14 at 19:41 -0400, Neal Rhodes wrote:
> > If in a shell script, you have a variable loaded with a character value,
> > and there is a delimiter, and you want to peel it apart by that
> > delimiter, is there a built-in expression to do that? 
> 
> > Here's what I'm doing, and I'm thinking there should be a better way. 
> 
> >         FULLNAME=$1                                  #eg:
> > CustomerEntry.CreditLimit
> >         DOT=`expr index $FULLNAME .`
> >         DOTM1=`expr $DOT - 1`
> >         TABLE=${FULLNAME:0:$DOTM1}             
> >         FIELD=${FULLNAME:$DOT:40}              
> 
> Yes there is.  You specifically said "bash" in the subject and in the
> talks we've had a ALE and AUUG over "belts and suspenders bash" the
> speaker mentioned using regex's in bash and accessing the underlying
> substring results.  Look for BASH_REMATCH variables and the =~ operator
> in the bash documentation.
> 
> --
> FOO=CustomerEntry.CreditLimit
> 
> if [[ "${FOO}" =~ (.*)\.(.*) ]] ; then
> 	echo "${BASH_REMATCH[1]} : ${BASH_REMATCH[2]}"
> else
> 	echo nope
> fi
> 
> CustomerEntry : CreditLimit
> --
> 
> Is that what you're after?
> 
> > Neal Rhodes
> > President, MNOP Ltd
> > Lilburn, GA
> > 770-972-5430
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> 
> Regards,
> Mike


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