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.util.Utils;
023    import org.crsh.vfs.spi.AbstractFSDriver;
024    
025    import java.io.IOException;
026    import java.io.InputStream;
027    import java.net.URISyntaxException;
028    import java.net.URL;
029    import java.util.ArrayList;
030    import java.util.Iterator;
031    
032    /** @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a> */
033    public class URLDriver extends AbstractFSDriver<Node> {
034    
035      /** . */
036      private final Node root;
037    
038      public URLDriver() {
039        this.root = new Node();
040      }
041    
042      public void merge(ClassLoader loader) throws IOException, URISyntaxException {
043        root.merge(loader);
044      }
045    
046      public void merge(URL url) throws IOException, URISyntaxException {
047        root.merge(url);
048      }
049    
050      public Node root() throws IOException {
051        return root;
052      }
053    
054      public String name(Node handle) throws IOException {
055        return handle.name;
056      }
057    
058      public boolean isDir(Node handle) throws IOException {
059        return handle.files.isEmpty();
060      }
061    
062      public Iterable<Node> children(Node handle) throws IOException {
063        return handle.children.values();
064      }
065    
066      public long getLastModified(Node handle) throws IOException {
067        return handle.files.isEmpty() ? 0 : handle.files.peekFirst().lastModified;
068      }
069    
070      public Iterator<InputStream> open(Node handle) throws IOException {
071        ArrayList<InputStream> list = new ArrayList<InputStream>(handle.files.size());
072        for (Node.File file : handle.files) {
073          list.add(file.resolver.open());
074        }
075        return list.iterator();
076      }
077    }