VisClient/org/hfbk/util/Updater.java

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package org.hfbk.util;

import java.io.File;
import java.io.IOException;
import java.net.URL;

import org.dronus.graph.Node;
import org.hfbk.vis.Prefs;
import org.hfbk.vis.source.Source;

public class Updater {

        static final String visPath = "VisClient/";

        static final String sourcePath = "org/hfbk/vis/source";

        public static void update() {
                System.out.print("Checking for sources update.. ");
                Source s= Source.getSource(Prefs.current.baseURL
                                + "graph.php?action=getgraph&source=files&path=" + visPath
                                + sourcePath);
                try {
                        s.join();
                } catch (InterruptedException e) {
                        throw new RuntimeException(e);
                }

                Node root = s.graph.getRoot();
                
                boolean updated=false;
                
                for (Node file : root.getFromNodes())
                        if (file.type.equals("URL")
                                        && file.text.matches("Source.*\\.class")) {
                                File target = new File(sourcePath + "/" + file.text);
                                if (!target.exists()|| target.lastModified() / 1000 < Long.parseLong(file.getSubNodeText("date")))
                                        try {
                                                updated=true;
                                                URL url = new URL(Prefs.current.baseURL + visPath + sourcePath + "/" + file.text);
                                                HTTPUtils.download(url, target);
                                        } catch (IOException e) {
                                                throw new RuntimeException(e);
                                        }
                        }
                if(!updated) System.out.println("already up to date!");         
        }

        public static void main(String[] args) {
                Updater.update();
        }

}

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