On Wed, 24 Jan 2007, Mikael Sitruk <[EMAIL PROTECTED]> wrote:
> I would like to know if it is possible to define a fileset/filelist
> that will return the first occurrence of the patterned file from a
> list of directories, like the java class loading and path.
>
> For example suppose we have 3 directories:
>
> Dir1: a.txt, b.java
>
> Dir2: a.txt,c:jar
>
> Dir3: b.java
I think you should be able to write a custom resource selector to do
this, let's say you'd typedef it as "returnfirstmatch" than you could
use it as
<restrict>
<union>
<fileset dir="Dir1"/>
<fileset dir="Dir2"/>
<fileset dir="Dir3"/>
</union>
<returnsfirstmatch/>
</restrict>
shouldn't be too difficult to do, but I don't think it can be done
with stock Ant, at least not in a generic way. For you specific case
<union>
<fileset dir="Dir1"/>
<fileset dir="Dir2">
<not>
<present targetdir="Dir1"/>
</not>
</fileset>
<fileset dir="Dir3">
<not>
<or>
<present targetdir="Dir1"/>
<present targetdir="Dir2"/>
</or>
</not>
</fileset>
</union>
would work, but I'd really choose the custom selector route.
Stefan
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