Copy subdirectories if they contain a specific file in Ant

Question

Really new to Ant and I have been trying to figure that out but could not...

Let say I have a structure like that :

Root
|-data
  |-dir1
     |-include.xml
     |-subdir1
       |-file1
       |-file2
       |-include.xml
     |-subdir2
  |--dir2
     |-file1
     |-include.xml
  |--dir3
  |--dir4
     |-file1
     |-include.xml
  |--dir5
|-build.xml
|-other files

I'd like to copy the files at the root (which is pretty simple filtering). But the the troubles come : I want to copy subdirectories of data only if they contain a file, here named include.xml. Here is what the destination folder should look like after copying

Root
|-data
  |-dir1
     |-include.xml
     |-subdir1
       |-file1
       |-file2
       |-include.xml
  |--dir2
     |-file1
     |-include.xml
  |--dir4
     |-file1
     |-include.xml
|-build.xml
|-other files

As you can see, /data/dir3, /data/dir5 and /data/dir1/subdir1 have not been copied, because they did not contain the include.xml file.

It might be simple but I could not find a way to do it, the property and available being set from what I understood globally ?

score 1 · Accepted Answer · edited May 23 '17 at 12:30

1

I don't think there exist a predefined property in ant because your requirements are very specific.

You may use <foreach> task from ant-contrib and write a recursive target which performs a copy.

Or you may implement the recursive solution in javascript using <script language="javascript"> . In this case you don't need additional libraries.

Yet another solution may be to copy everything and delete directories which don't contain include.xml.

You may find some examples here.

edited May 23 '17 at 12:30

Community

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1

answered Jun 03 '15 at 11:25

Oleg Pavliv

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Thanks ! I'll try to figure this out with your idea for script (didn't know this possibility !). I'll mark as right answer as soon as I can post as comment the answer :) – PonteIneptique Jun 03 '15 at 11:57
Thanks for your guidance ! Find an example below : http://stackoverflow.com/a/30621334/2390493 – PonteIneptique Jun 03 '15 at 13:20
You are welcome! Yes, sometimes it's easier to do something in javascript than in ant. And the final solution is more maintainable as well. – Oleg Pavliv Jun 03 '15 at 14:13

score 1 · Answer 2 · answered Jun 03 '15 at 13:20

Here is an example thanks to the guidance of @Oleg

  <target name="copy">
      <!-- Remove files if they are not neighbour of required ${data.checkfile} -->
      <script language="javascript"> <![CDATA[
        var getInclude = function(list) {
            var o = {};
            for (i=0; i<list.length; i++) {
              var f = list[i];
              if(f.indexOf(inc_file) > 0) {
                  var folder = f.split("/").slice(0,-1).join("/");;
                  o[folder] = f;
              }
            }
            return o;
        }
        importClass(java.io.File);

        // Access to Ant-Properties by their names
        data_dir = project.getProperty("data.dir"); // The directory where you want to check for subdirectory including X
        copy_dir = project.getProperty("copy.dir"); // The directory where you want to check for subdirectory including X
        inc_file = project.getProperty("data.required"); // The file which says if a folder should be copie

        // Create a <fileset dir="" includes=""/> to retrieve everything from this folder
        fs = project.createDataType("fileset");
        fs.setDir( new File(data_dir) );
        fs.setIncludes("**");
        ds = fs.getDirectoryScanner(project); // Get the files (array) of that fileset
        files = ds.getIncludedFiles(); // Get only the files

        //Create destination and sourceDir File instances
        basedir = new File(".");
        destination = new File(basedir, [copy_dir, data_dir].join("/"));
        source = new File(basedir, data_dir);

        //We create an object where key are folder containing said inc_file
        exist = getInclude(files);
        includes = [];
        for (i=0; i<files.length; i++) {
          filename = files[i];
          folder = filename.split("/").slice(0,-1).join("/");
          if(exist[folder]) {
              f = new File(source, filename);
              copy = project.createTask("copy");
              copy.setTofile(new File(destination, filename));
              copy.setFile(f);
              copy.perform();
          }
        }
      ]]>
    </script>
  </target>
</project>

Copy subdirectories if they contain a specific file in Ant

2 Answers2