Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/* Copyright (C) 2011 [Gobierno de Espana]
 * This file is part of "Cliente @Firma".
 * "Cliente @Firma" 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 2 of the License, or (at your option) any later version.
 *   - or The European Software License; either version 1.1 or (at your option) any later version.
 * Date: 11/01/11
 * You may contact the copyright holder at: soporte.afirma5@mpt.es
 */

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

import java.nio.MappedByteBuffer;
import java.nio.channels.FileChannel;

import java.util.logging.Logger;

public class Main {
    private static final Logger LOGGER = Logger.getLogger("es.gob.afirma");

    /** Carga una librería nativa del sistema.
     * @param path Ruta a la libreria de sistema.
     * @throws IOException Si ocurre algún problema durante la carga */
    public static void loadNativeLibrary(final String path) throws IOException {
        if (path == null) {
            LOGGER.warning("No se puede cargar una biblioteca nula"); //$NON-NLS-1$
            return;
        }
        final int pos = path.lastIndexOf('.');
        final File file = new File(path);
        final File tempLibrary = File.createTempFile(
                pos < 1 ? file.getName() : file.getName().substring(0, file.getName().indexOf('.')),
                pos < 1 || pos == path.length() - 1 ? null : path.substring(pos));

        // Copiamos el fichero
        copyFile(file, tempLibrary);

        // Pedimos borrar los temporales cuando se cierre la JVM
        if (tempLibrary != null) {
            tempLibrary.deleteOnExit();
        }

        LOGGER.info("Cargamos " + (tempLibrary == null ? path : tempLibrary.getAbsolutePath())); //$NON-NLS-1$
        System.load(tempLibrary != null ? tempLibrary.getAbsolutePath() : path);

    }

    /** Copia un fichero.
     * @param source Fichero origen con el contenido que queremos copiar.
     * @param dest Fichero destino de los datos.
     * @throws IOException SI ocurre algun problema durante la copia */
    public static void copyFile(final File source, final File dest) throws IOException {
        if (source == null || dest == null) {
            throw new IllegalArgumentException("Ni origen ni destino de la copia pueden ser nulos"); //$NON-NLS-1$
        }

        final FileInputStream is = new FileInputStream(source);
        final FileOutputStream os = new FileOutputStream(dest);
        final FileChannel in = is.getChannel();
        final FileChannel out = os.getChannel();
        final MappedByteBuffer buf = in.map(FileChannel.MapMode.READ_ONLY, 0, in.size());
        out.write(buf);

        in.close();
        out.close();
        is.close();
        os.close();

    }
}