ant: list folders on command line

Question

I'm new to ant. I'm looking to a way to do this

I have a folder, with a variable number of subfolders. Suppose subfolders are s1,s2,s3...,sN (N is not known)

I need to create and execute this command line

java -jar myjar.jar s1\ s2\ s3\ ... sN\

I would like to use standard task, but I do not know how to list folders on the command line.

Any help would really be appreciated!

Alberto

Answer 1

I think fileset task is what you're looking for:

http://ant.apache.org/manual/CoreTypes/fileset.html

The jar task can work with implicit filesets, or you can define custom filesets within the jar task.

http://ant.apache.org/manual/CoreTasks/jar.html

See the examples at the bottom of the jar page.

Answer 2

I think that the jar task is NOT what I need. I have to execute an existing jar, not to create a new jar.

I know fileset and dirset (which I'm using).

What I was able to achieve is this

<pathconvert pathsep="\&quot; &quot;" property="folders_temp">
 <dirset dir="junitHistory">
      <include name="junit*"/> 
 </dirset>
    </pathconvert>
<property name="folders" value="&quot;${folders_temp}\&quot;"/>

<java dir="junitHistory" jar= "./unitth.jar" fork="true" output="ant.log">
  <arg value="${folders}"/>      
</java>

With these, jar is executed, but the problem is that all folders s1...SN are passed with the full path (ie c:\aaa\bbb\ccc\s1\, c:\aaaa\bbb\ccc\s2, etc) and for some reason this does not work for the jar (the jar is an external library that we cannot modify).

So, what I have to do is find a way to list folders without absolute path. Maybe there is some parameters in the pathconvert task, or I need to use a different task to create a property with the list of folders ?

thank you Alberto

Answer 3

You cac create an ant custom task which get the parent dir, a dirset or a patternset and writes all the names into an ant property

See more about it here http://ant.apache.org/manual/develop.html