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