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From "Anderson, Rob (Global Trade)" <Rob.Ander...@nike.com>
Subject RE: Implementing a loop in ANT
Date Fri, 09 Jun 2006 17:32:02 GMT
I had a similar need. I bassically created a shell script that would
generate a LIST property that contained a comma delimited list of
numbers. Here is the script...


#!/bin/bash
echo "How many POs?"
read NUM

X=0

echo -n "LIST=" >list.txt

while  [ $X -lt $NUM ] ; do
  if [ $X -lt 10 ] ; then
    echo -n "$DELIM"00"$X" >> list.txt
  elif [ $X -ge 10 ] & [ $X -lt 100 ] ; then
    echo -n "$DELIM"0"$X" >> list.txt
  else
    echo -n "$DELIM""$X" >> list.txt
  fi
  DELIM=,
  let X=$X+1
Done

Run this first to generate the LIST in list.txt, then use the foreach
task to loop over the LIST property in your build.xml. I know it's kinda
lame, but it works.

-Rob A


> -----Original Message-----
> From: Scot P. Floess [mailto:floess@mindspring.com] 
> Sent: Friday, June 09, 2006 3:50 AM
> To: Ant Users List
> Subject: Re: Implementing a loop in ANT
> 
> They do, but unfortunately not exactly what Guru needs.  They 
> support for-loops over lists or file sets.  Really, he needs 
> something like:
> 
> <for lower = "1" upper = "100">
> ...
> </for>
> 
> I'm trying to figure out a way to do this using 
> ant/ant-contrib but its not readily apparent to me (I though 
> it'd be trivial) to make it happen.
> 
> What I really need is some form of while loop.  I considered 
> using recursion...but I could see some possible issues with 
> arbitrarily large iterations (not sure why one would do 
> so...but nonetheless).
> 
> Anyway, really I don't think he wants to pre-compute some 
> large list with a delimiter and then use <for> over the 
> list...  At least I don't want to do that as a solution ;)  
> Yes, I know one could possibly use a <script>.  I am trying 
> to not do that anyway (for reasons related to my open source 
> project - long story)...
> 
> Scot
> 
> dbrosius@baybroadband.net wrote:
> > ant-contrib.sourceforge.net has some tasks to do this.
> >
> >
> >
> >
> > -----Original Message-----
> > From: "Guru Balse" <guru.balse@oracle.com>
> > Sent: Wed, June 7, 2006 2:17 pm
> > To: "Ant Users List" <user@ant.apache.org>
> > Subject: Implementing a loop in ANT
> >
> > I am sure this question has been asked before, and I could 
> not see any 
> > reasonable answer in the archives.  How can I implement a 
> loop in ANT 
> > without using scripts?  For example, if I want to call a certain 
> > target N times, how can I do it?
> >
> > Using ant-contrib is OK.  Of course, something like <for 
> > list="1,2,3,4,5,6,...,N"> would work but I want N to be a property 
> > that can be specified in the command line.
> >
> > Thanks in advance for your suggestions.
> >
> >  - Guru Balse
> >
> > 
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> >
> >
> >
> > 
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> >
> >   
> 
> --
> Scot P. Floess
> 27 Lake Royale
> Louisburg, NC  27549
> 
> 252-478-8087 (Home)
> 919-754-4592 (Work)
> 
> Chief Architect JPlate  http://sourceforge.net/projects/jplate
> Chief Architect JavaPIM http://sourceforge.net/projects/javapim
> 
> 
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> 
> 
> 


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