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.ram;
021    
022    import org.crsh.vfs.Path;
023    
024    import java.io.IOException;
025    import java.net.URL;
026    import java.net.URLConnection;
027    import java.net.URLStreamHandler;
028    
029    public class RAMURLStreamHandler extends URLStreamHandler {
030    
031      /** . */
032      private final RAMDriver driver;
033    
034      public RAMURLStreamHandler(RAMDriver driver) {
035        this.driver = driver;
036      }
037    
038      @Override
039      protected URLConnection openConnection(URL u) throws IOException {
040        Path path = Path.get(u.getFile());
041        if (path.isDir()) {
042          throw new IOException("Cannot open dir");
043        }
044        String file = driver.entries.get(path);
045        if (file == null) {
046          throw new IOException("Cannot open non existing dir " + path);
047        }
048        return new RAMURLConnection(u, file);
049      }
050    }