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 }