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A VFS library
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/*
 * JBoss, Home of Professional Open Source
 * Copyright 2010, JBoss Inc., and individual contributors as indicated
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.jboss.vfs.protocol;

import java.io.File;
import java.io.FilePermission;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.security.Permission;

import org.jboss.vfs.VFS;
import org.jboss.vfs.VirtualFile;
import org.jboss.vfs.spi.RootFileSystem;

/**
 * Implementation URLConnection that will delegate to the VFS RootFileSystem.
 *
 * @author John Bailey
 * @version $Revision$
 */
public class FileURLConnection extends AbstractURLConnection {

    private final RootFileSystem rootFileSystem = RootFileSystem.ROOT_INSTANCE;

    private final VirtualFile mountPoint = VFS.getRootVirtualFile();

    private final VirtualFile file;

    public FileURLConnection(URL url) throws IOException {
        super(url);
        file = VFS.getChild(toURI(url));
    }

    public File getContent() throws IOException {
        return rootFileSystem.getFile(mountPoint, file);
    }

    public int getContentLength() {
        final long size = rootFileSystem.getSize(mountPoint, file);
        return size > (long) Integer.MAX_VALUE ? -1 : (int) size;
    }

    public long getLastModified() {
        return rootFileSystem.getLastModified(mountPoint, file);
    }

    public InputStream getInputStream() throws IOException {
        return rootFileSystem.openInputStream(mountPoint, file);
    }

    @Override
    public Permission getPermission() throws IOException {
        return new FilePermission(file.getPathName(), "read");
    }

    public void connect() throws IOException {
    }

    @Override
    protected String getName() {
        return file.getName();
    }
}