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
020package org.crsh.vfs.spi.url;
021
022import org.crsh.util.Utils;
023import org.crsh.vfs.spi.AbstractFSDriver;
024
025import java.io.IOException;
026import java.io.InputStream;
027import java.net.URISyntaxException;
028import java.net.URL;
029import java.util.ArrayList;
030import java.util.Iterator;
031
032/** @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a> */
033public 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}