/******************************************************************************
* JBoss, a division of Red Hat *
* Copyright 2009, Red Hat Middleware, LLC, 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.gatein.common.net.vfs;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.net.URISyntaxException;
import java.net.URL;
import org.gatein.common.logging.Logger;
import org.gatein.common.logging.LoggerFactory;
import org.gatein.common.net.URLFilter;
import org.gatein.common.net.URLNavigationProvider;
import org.gatein.common.net.URLVisitor;
import org.jboss.virtual.VirtualFile;
import org.jboss.virtual.plugins.vfs.VirtualFileURLConnection;
/**
* @author <a href="mailto:julien@jboss.org">Julien Viet</a>
* @version $Revision: 7448 $
*/
public class VFSZipURLNavigationProvider implements URLNavigationProvider
{
/** The logger. */
private Logger log = LoggerFactory.getLogger(VFSZipURLNavigationProvider.class);
/** Trace. */
private boolean trace = log.isDebugEnabled();
public void visit(URL url, URLVisitor visitor, URLFilter filter) throws IllegalArgumentException, IOException
{
if (url == null)
{
throw new IllegalArgumentException("Null URL not accepted");
}
if (!"vfszip".equals(url.getProtocol()))
{
throw new IllegalArgumentException("Only jar URL are accepted, not " + url.getProtocol());
}
VirtualFileURLConnection conn = (VirtualFileURLConnection) url.openConnection();
VirtualFile vFile = conn.getContent();
visit(vFile, visitor, filter);
}
private void visit(VirtualFile file, URLVisitor visitor, URLFilter filter) throws IOException
{
if (!file.exists())
{
throw new FileNotFoundException();
}
else
{
String name = file.getName();
if (!file.isLeaf())
{
if (trace)
{
log.debug("entering directory" + file.getPathName());
}
try
{
URL url = file.toURL();
boolean visit = filter == null || filter.acceptDir(url);
if (visit)
{
visitor.startDir(url, name);
for (VirtualFile child : file.getChildren())
{
visit(child, visitor, filter);
}
visitor.endDir(file.toURL(), name);
if (trace)
{
log.debug("leaving directory" + file.getPathName());
}
}
}
catch (URISyntaxException e)
{
throw new IOException("Error trying to get Virtual File for " + file.toString() + ". " + e);
}
}
else
{
try
{
if (trace)
{
log.debug("visiting file " + file.getPathName());
}
URL url = file.toURL();
if (filter.acceptFile(url))
{
visitor.file(url, name);
}
else if (trace)
{
log.debug("The file does not respect url format");
}
}
catch (URISyntaxException e)
{
throw new IOException("Error trying to get Virtual File for " + file.toString() + ". " + e);
}
}
}
}
}