fr.asso.vieillescharrues.parseurs.TelechargeFichier.java Source code

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Here is the source code for fr.asso.vieillescharrues.parseurs.TelechargeFichier.java

Source

/*
 * This file is part of Vieilles Charrues 2010.
 *
 * Vieilles Charrues 2010 is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Vieilles Charrues 2010 is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Vieilles Charrues 2010.  If not, see <http://www.gnu.org/licenses/>.
 */

package fr.asso.vieillescharrues.parseurs;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;

import org.apache.http.util.ByteArrayBuffer;

/**
 * Classe grant le tlechargement de fichiers
 * 
 * @author Julien VERMET / Arzhel YOUNSI
 * @version 1.0
 */
public class TelechargeFichier {
    private static int tailleDistant = 0;
    private static int tailleLocal = 0;

    private static final String PATH = "/data/data/fr.asso.vieillescharrues/";

    /**
     * Mthode statique grant le tlechargement de fichiers
     * @param url Adresse du fichier
     * @param fichierDest Nom du ficher en local
     */
    public static void DownloadFromUrl(URL url, String fichierDest) throws IOException {
        File file;
        if (fichierDest.endsWith(".jpg"))
            file = new File(PATH + "images/", fichierDest);
        else
            file = new File(PATH, fichierDest);
        file.getParentFile().mkdirs();
        URLConnection ucon = url.openConnection();

        try {
            tailleDistant = ucon.getHeaderFieldInt("Content-Length", 0); //Rcupre le header HTTP Content-Length
            tailleLocal = (int) file.length();
        } catch (Exception e) {
            e.printStackTrace();
        }
        // Compare les tailles des fichiers
        if ((tailleDistant == tailleLocal) && (tailleLocal != 0))
            return;

        InputStream is = ucon.getInputStream();
        BufferedInputStream bis = new BufferedInputStream(is);
        ByteArrayBuffer baf = new ByteArrayBuffer(50);
        int current = 0;
        while ((current = bis.read()) != -1) {
            baf.append((byte) current);
        }
        FileOutputStream fos = new FileOutputStream(file);
        fos.write(baf.toByteArray());
        fos.close();
    }

}