Deleting directories using restrict

[Andreas Held <an...@bbp.ch>]

Hi,

Using Ant 1.7.0, I am trying to delete some directories, based on a 
comparison of their names:

        <delete verbose="true">
          <restrict>
              <dirset dir="${dist_dir}" includes="*"  />
              <rsel:compare when="le" against="all">
                <control>
                  <resource name="${delete-id}" />
                </control>
                <rcmp:name />
              </rsel:compare>
              <rsel:type type="dir" />
          </restrict>
      </delete>

This works well if and only if the directories in question are empty. If 
they are not empty, the delete does not work. What am I doing wrong 
here? Incidentally, the directory names are in the form of timestamps, 
comparing using "le" should delete all that are older than a specified 
timestamp. As there are other directories I have to keep, simply 
deleting based on time does not work.

Any help is greatly appreciated.

Best regards,

Andreas


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Re: Deleting directories using restrict

[Andreas Held <an...@bbp.ch>]

Since nobody took this up, I will add some more information.
Looking into the Ant sources (V1.7.0, Delete.java) shows the following 
snippet:

if (resourcesToDelete.isFilesystemOnly()) {
   for (Iterator iter = resourcesToDelete.iterator(); iter.hasNext();) {
       FileResource r = (FileResource) iter.next();
       // nonexistent resources could only occur if we already
       // deleted something from a fileset:
       if (!r.isExists()) {
           continue;
       }
       if (!(r.isDirectory()) || r.getFile().list().length == 0) {
           log("Deleting " + r, verbosity);
           if (!delete(r.getFile()) && failonerror) {
               handle("Unable to delete "
                   + (r.isDirectory() ? "directory " : "file ") + r);
           }
       }
   }
} else {

This means, in the case of resource collections, directories are not 
treated the same as in the case of setting "dir" directly. Is there a 
deep reason behind this I don't understand?

Best regards

Andreas

> Hi,
> 
> Using Ant 1.7.0, I am trying to delete some directories, based on a 
> comparison of their names:
> 
>         <delete verbose="true">
>           <restrict>
>               <dirset dir="${dist_dir}" includes="*"  />
>               <rsel:compare when="le" against="all">
>                 <control>
>                   <resource name="${delete-id}" />
>                 </control>
>                 <rcmp:name />
>               </rsel:compare>
>               <rsel:type type="dir" />
>           </restrict>
>       </delete>
> 
> This works well if and only if the directories in question are empty. If 
> they are not empty, the delete does not work. What am I doing wrong 
> here? Incidentally, the directory names are in the form of timestamps, 
> comparing using "le" should delete all that are older than a specified 
> timestamp. As there are other directories I have to keep, simply 
> deleting based on time does not work.
> 
> Any help is greatly appreciated.
> 
> Best regards,
> 
> Andreas
> 
> 



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