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To: ant-dev@jakarta.apache.org
Subject: Re: Transforming/mapping filesets
References: <567021421569D311AFED00508B121BD80474A027@MGIEXCHANGE>
From: Stefan Bodewig <bodewig@apache.org>
Date: 17 Oct 2001 09:48:12 +0200
In-Reply-To: ryan@mediumone.com's message of "Mon, 1 Oct 2001 12:14:25 -0400"
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On Mon, 1 Oct 2001, <ryan@mediumone.com> wrote:

> Is there a way to do this now?

I first thought you could get away with <apply> (at the cost of
portability), something like

<apply executable="rm">
  <srcfile />

  <fileset dir="." excludes="*.foo" />
  <mapper type="glob" from="*" to="*.foo" />
</apply>

could work - this will delete all files not ending with .foo where no
corresponding .foo file can be found or .foo is older than the file in
question.  As long as there are only .foo files in the directory and
nothing else (after the cleanup) this could work.  Looks a little
dangerous.

> Is this a sensible feature?

It has been asked for before and we are planning to enhance the whole
<fileset> stuff to allow to build fileset based on other predicates,
not just pattern matching (readable files, files modified before a
given date and so on) - using some kind of mapper predicate fits into
this very vague picture as well.

Stefan