source: other-projects/FileTransfer-WebSocketPair/testGXTWithGreenstone/src/com/gs3/testGXT/server/ListDirectoryServiceImpl.java@ 33053

package com.gs3.testGXT.server;

import java.io.File;
import java.util.LinkedList;

import com.google.gwt.user.server.rpc.RemoteServiceServlet;
import com.gs3.testGXT.client.services.ListDirectoryService;

@SuppressWarnings("serial")
public class ListDirectoryServiceImpl extends RemoteServiceServlet implements ListDirectoryService {

    @Override
    public LinkedList<String[]> getDirectoryContents(String path) {
        LinkedList<String[]> ret = new LinkedList<String[]>();
        try {
            //only try first symbol
            File folder = new File(path);
            File[] listOfFiles = folder.listFiles();
            
            if(listOfFiles == null) { //there are no files because this is not a directory!
                return ret; // if we return an empty list, the client will understand - we could potentially return null too
            }

            //I know this isn't proper JSON: I can fix this a little bit later
            for (int i = 0; i < listOfFiles.length; i++) {
                String LA = "INVALID";
                String LB;
                String LC;

                LB = listOfFiles[i].getName();
                LC = listOfFiles[i].getCanonicalPath();
                if (listOfFiles[i].isFile()) {
                    LA = "File";
                } else if (listOfFiles[i].isDirectory()) {
                    LA = "Folder";
                }
                else { //I'm not sure if this should even be possible...
                    continue;
                }
                String[] tmp = new String[] {LA, LB, LC};
                ret.add(tmp);
            }
        } catch (Exception e) {
            System.err.println(e);
        }
        return ret;
    }

}