Apache Ant - Select All Symlinks - ant

Question

I need a symbolic link selector in Apache Ant.
The following selectors are available to the Core.
Can anyone advise me on writing a <scriptselector> for selecting only the symbolic linked files under a directory? Or any other way?
The reason:
folder
|-- file-0.0.1
|-- file-0.0.2
|-- file-0.0.3
`-- file --> file-0.0.3
I just want to get the file that is symbolically linked by file. In this case file-0.0.3, but the symbolic link can change and I don't want all the other files to be in the Ant <fileset>

Answer 1

Please take a look at :
http://ant.apache.org/manual/Tasks/symlink.html
I don't have a linux machine to test now but I guess that with the something like this :
<symlink action="record" linkfilename="my.links">
<fileset dir="${my.folder}" includes="*"/>
</symlink>
You should be able to record your symlinks into a file and then processing the files as you wish. For example you could then create a list only with the "symlinked" files and iterate over it to do what you want.
EDIT :
For this solution you will need to install the ant-contrib. Just unpack the ant-contrib-1.0b3.jar to your ant/lib directory. Then use the following build.xml file :
<project name="test" default="build">
<!--Needed for antcontrib-->
<taskdef resource="net/sf/antcontrib/antcontrib.properties"/>
<target name="build">
<property name="my.dir" value="/home/stefanos"/>
<exec executable="bash" outputproperty="symlinks" dir="${my.dir}">
<arg value="-c"/>
<arg value="\ls -1 | xargs -l readlink"/>
</exec>
<foreach list="${symlinks}" delimiter="${line.separator}" param="link" target="process.link"/>
</target>
<target name="process.link">
<!--Do whatever you want with the file targeted by the symlink-->
<echo message="Processing link : ${link}"/>
</target>
</project>
The trick is the linux command which returns all the targeted files from the symlinks. Then you just iterate through them with the foreach task and you call a target in which you can do whatever you need with the files.