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From Matt Benson <gudnabr...@yahoo.com>
Subject Re: if/unless Attributes
Date Thu, 24 Sep 2009 17:42:09 GMT


--- On Thu, 9/24/09, Peter Reilly <peter.kitt.reilly@gmail.com> wrote:

> From: Peter Reilly <peter.kitt.reilly@gmail.com>
> Subject: Re: if/unless Attributes
> To: "Ant Developers List" <dev@ant.apache.org>
> Date: Thursday, September 24, 2009, 12:36 PM
> using <target name="x"
> if="${foo}">
> seems to be very very strange..
> 

Maybe it seems that way, but taking into account you'd have to be deliberately using propertyhelper
delegates to make proper use of this, it might look like:

<target name="x" if="${boolean:${do-x}}" unless="${boolean:${skip-x}}">
  <...>
</target>

-Matt

> 
> Peter
> 
> 
> 
> On Thu, Sep 24, 2009 at 5:09 PM, Stefan Bodewig <bodewig@apache.org>
> wrote:
> > On 2009-09-24, Stefan Bodewig <bodewig@apache.org>
> wrote:
> >
> >> <target if="${foo}"/>
> >
> >> will only be executed if a property named ${foo}
> exists (unexpanded) -
> >> in Ant 1.7.1. and Ant 1.8.0 - or if expanding
> ${foo} returns something
> >> that equals Boolean.TRUE (Ant 1.8.0 only).
> >
> > This part is false, I just re-read the code.  It will
> look up a property
> > named like the expansion of ${foo} - and it's been
> that way in 1.7.1 as
> > well.
> >
> > This doesn't change the rest of what I wrote, you'd
> still need
> > <target if="${foo}"/> if you wanted to skip a
> target if foo evaluated to
> > "false".
> >
> > Stefan
> >
> >
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> >
> >
> 
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> 
> 


      

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