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Date: Tue, 12 Aug 2008 08:13:42 -0700 (PDT)
From: Matt Benson <gudnabrsam@yahoo.com>
Subject: RE: A way to create empty files
To: Ant Users List <user@ant.apache.org>
In-Reply-To: <AGEOKPGDFJPLJMFEHFAGMEBDCAAA.jim.showalter@verizon.net>
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Or, barring all these other suggestions, you could
just use Ant >= 1.7 and write:

<touch>
  <restrict>
    <file file="filetotouch" />
    <not
xmlns="antlib:org.apache.tools.ant.types.resources.selectors">
      <exists />
    </not>
  </restrict>
</touch>

Note that the componentdef addition to Ant 1.8 will
obviate the need for the ns declaration of the not
(and, by inheritance, the exists) element.

Sorry for the delay in providing this solution,
Matt

--- Jim Showalter <jim.showalter@verizon.net> wrote:

> You could also write a java program to add the
> functionality and then add it in via taskdef.  The
> downside is that your build file would not work on
> other platforms unless you included the class file
> that implements the task.
> 
> Jim
> 
> 
> -----Original Message-----
> From: Evgeny [mailto:evgeny.zislis@gmail.com]
> Sent: Tuesday, August 12, 2008 3:53 AM
> To: Ant Users List
> Subject: Re: A way to create empty files
> 
> 
> It's not that I am worried it wont work, just too
> many targets makes
> it all messy. And then even when I myself try to
> decipher what goes
> where, I need to follow a huge tree of logic in
> dependencies. Since
> Ant is more of a functional language, I would rather
> avoid all that
> and just write one statement like <touch file="new"
> dontchangetimestamponexistingfile=true"/> or
> something.
> 
> Ahh, well.
> 
> On Mon, Aug 11, 2008 at 10:48 PM, EJ Ciramella
> <ejciramella@upromise.com> wrote:
> > Nope, you will have this additional target that
> tests for availability,
> > then your "touch" target will have an if/unless
> (depending on how you
> > configure your "availability" target) condition.
> >
> > This is typical.
> >
> > You shouldn't be too worried about many targets
> springing up all over
> > the place, as long as you don't provide a
> description, they won't show
> > during "ant -projecthelp" (which should be what
> people are using to see
> > what targets exist in a particular build file).
> >
> > -----Original Message-----
> > From: Evgeny [mailto:evgeny.zislis@gmail.com]
> > Sent: Monday, August 11, 2008 9:29 AM
> > To: Ant Users List
> > Subject: Re: A way to create empty files
> >
> > So there is no way to do this other than creating
> an additional target
> > with an "if" attribute?
> >
> > On Mon, Aug 11, 2008 at 3:09 PM, Kevin Jackson
> <foamdino@gmail.com>
> > wrote:
> >> I think you want to look at the Available task
> >>
> >>
>
http://ant.apache.org/manual/CoreTasks/available.html
> >>
> >> Thanks,
> >> Kev
> >>
> >>
>
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