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 * <p>

 * File utilities. Extends the provides by <i>apache-common-IO</i>

 * </p>

 * @author gvSIG Team

 * @version $Id$

 */

public abstract class FileUtils extends org.apache.commons.io.FileUtils {

    private static final Logger LOG = LoggerFactory.getLogger(FileUtils.class);

    /**

     * <p>

     * Unzip a file into a folder

     * </p>

     * @param zipFile

     * @param outputFloder

     *            must exists. WARNING: <b>Contents will be removed before

    /**

     * Extract a zipEntry into a file

     * @param zipFile

     * @param entry

     * @param target

     * <p>

     * Files will be use relative path to <code>rootFolder</code>

     * </p>

     * @param rootFolder

     *            rootFolder (must be an existing folder)

     * @param targetFile

    /**

     * Informs if <code>folder</code> is a writable folder( exists & isDir &

     * canWrite)

     * @param folder

     * @return

     */

    /**

     * Informs if <code>folder</code> is a readable folder( exists & isDir &

     * canRead)

     * @param folder

     * @return

     */

    /**

     * Informs if <code>file</code> is a readable file ( exists & isFile &

     * canRead)

     * @param folder

     * @return

     */

     * The pattern is: <code>baseFolder/baseName.0000</code> where

     * <code>000</code> it's a counter.

     * </p>

     * @param baseFolder

     *            existing and writable folder

     * @param baseName

     * The pattern is: <code>baseFolder/baseName.0000</code> where

     * <code>000</code> it's a counter.

     * </p>

     * @param baseFolder

     *            existing and writable folder

     * @param baseName

     * <p>

     * This <b>no create</b> the file into the file system.

     * </p>

     * @param baseFolder

     *            existing and writable folder

     * @param name

     * Return <code>path</code> as relative from <code>basePath</code> only if

     * <code>basePath</code> is an ancestor of <code>path</code>:

     * </p>

     * @param path

     * @param basePath

     * @return

     * This class generates a Zip file with the context of a folder. All entries

     * in generated zip will be relatives to source folder.

     * </p>

     * @author gvSIG Team

     * @version $Id$

     */

    private static class RelativePathFolderZipper extends DirectoryWalker {

        /**

         * Prepares compression process

         * @param rootFolder

         *            folder to compress

         * @param targetFile

        /**

         * Execute compression process

         * @throws IOException

         */

        public synchronized void zip() throws IOException {

            String relativePath =

                FilenameUtils.getRelativeTo(file.getAbsolutePath(),

                    rootFolderPath);

            InputStream in = null;

            try {