001    /*
002     * Copyright (C) 2012 eXo Platform SAS.
003     *
004     * This is free software; you can redistribute it and/or modify it
005     * under the terms of the GNU Lesser General Public License as
006     * published by the Free Software Foundation; either version 2.1 of
007     * the License, or (at your option) any later version.
008     *
009     * This software is distributed in the hope that it will be useful,
010     * but WITHOUT ANY WARRANTY; without even the implied warranty of
011     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012     * Lesser General Public License for more details.
013     *
014     * You should have received a copy of the GNU Lesser General Public
015     * License along with this software; if not, write to the Free
016     * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
017     * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
018     */
019    
020    package org.crsh.vfs.spi.url;
021    
022    import org.crsh.vfs.spi.AbstractFSDriver;
023    
024    import java.io.IOException;
025    import java.io.InputStream;
026    import java.net.URISyntaxException;
027    import java.net.URL;
028    
029    /** @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a> */
030    public class URLDriver extends AbstractFSDriver<Node> {
031    
032      /** . */
033      private final Node.Dir root;
034    
035      public URLDriver() {
036        this.root = new Node.Dir();
037      }
038    
039      public void merge(ClassLoader loader) throws IOException, URISyntaxException {
040        root.merge(loader);
041      }
042    
043      public void merge(URL url) throws IOException, URISyntaxException {
044        root.merge(url);
045      }
046    
047      public Node root() throws IOException {
048        return root;
049      }
050    
051      public String name(Node handle) throws IOException {
052        return handle.name;
053      }
054    
055      public boolean isDir(Node handle) throws IOException {
056        return handle instanceof Node.Dir;
057      }
058    
059      public Iterable<Node> children(Node handle) throws IOException {
060        return ((Node.Dir)handle).children.values();
061      }
062    
063      public long getLastModified(Node handle) throws IOException {
064        return handle instanceof Node.File ? ((Node.File)handle).lastModified : 0;
065      }
066    
067      public InputStream open(Node handle) throws IOException {
068        return ((Node.File)handle).resolver.open();
069      }
070    }