Android Open Source - AndroIUT F T P Download Monitor

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License

The source code is released under:

GNU General Public License

Java Source Code

package com.iutdijon.androiut2.ftp.services;
/*from   ww  w  .  ja  v a2  s . c  o  m*/
import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.Iterator;

import org.apache.commons.io.output.CountingOutputStream;
import org.apache.commons.net.ftp.FTP;
import org.apache.commons.net.ftp.FTPClient;

import com.iutdijon.androiut2.util.observers.Observable;
import com.iutdijon.androiut2.util.observers.Observer;

/**
 * Classe permettant de surveiller l'avancement d'un t?l?chargement de fichier depuis le serveur
 * @author Morgan Funtowicz
 *
 */
public class FTPDownloadMonitor extends CountingOutputStream implements Observable{

  private FTPClient client;
  private int fileSize = 0;
  
  private ArrayList<Observer> observers;
  
  /**
   * Construit un nouvel objet FTPDownloadMonitor
   * @param out Le stream permettant de sauvegarder les donn?es transf?r?es
   * @param client Le client supportant la connexion active
   */
  public FTPDownloadMonitor(OutputStream out, FTPClient client) {
    super(out);
    this.client = client;
    observers = new ArrayList<Observer>();
  }
  
  /**
   * Permet de d?marrer le t?l?chargement du fichier
   * @param path chemin vers le fichier ? t?l?charger
   * @throws IOException Lev?e si le fichier n'est pas pr?sent dans le dossier
   */
  public void startDownload(String path) throws IOException{
    client.sendCommand("SIZE", path);
    String size_reply = client.getReplyString();
    
    if(size_reply.indexOf(" ") == -1){    
      fileSize = Integer.parseInt(size_reply);
      
    }else{
      String[] splited = size_reply.split(" ");
      fileSize = Integer.parseInt(splited[1].replaceAll("\\D", ""));
    }
    client.setFileType(FTP.BINARY_FILE_TYPE);
    client.retrieveFile(path, this);
  }
  
  @Override
  protected synchronized void beforeWrite(int n) {
    super.beforeWrite(n);
    notify(100*getCount()/fileSize);
  }

  @Override
  public void addObserver(Observer o) {
    observers.add(o);
  }

  @Override
  public void removeObserver(Observer o) {
    observers.remove(o);
  }

  @Override
  public void notify(int progress) {
    for (Iterator<Observer> iterator = observers.iterator(); iterator.hasNext();) {
      
      Observer type = iterator.next();
      type.update(this, progress);
    }
  }  
}

Java Source Code List

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