/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.commons.vfs.provider.jar;
import org.apache.commons.vfs.Capability;
import org.apache.commons.vfs.FileName;
import org.apache.commons.vfs.FileObject;
import org.apache.commons.vfs.FileSystem;
import org.apache.commons.vfs.FileSystemException;
import org.apache.commons.vfs.FileSystemOptions;
import org.apache.commons.vfs.FileType;
import org.apache.commons.vfs.provider.LayeredFileName;
import org.apache.commons.vfs.provider.zip.ZipFileProvider;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
/**
* A file system provider for Jar files. Provides read-only file
* systems. This provides access to Jar specific features like Signing and
* Manifest Attributes.
*
* @author <a href="mailto:brian@mmmanager.org">Brian Olsen</a>
* @version $Revision: 480428 $ $Date: 2006-11-29 07:15:24 +0100 (Mi, 29 Nov 2006) $
*/
public class JarFileProvider
extends ZipFileProvider
{
final static Collection capabilities;
static
{
Collection combined = new ArrayList();
combined.addAll(ZipFileProvider.capabilities);
combined.addAll(Arrays.asList(new Capability[]
{
Capability.ATTRIBUTES,
Capability.FS_ATTRIBUTES,
Capability.SIGNING,
Capability.MANIFEST_ATTRIBUTES,
Capability.VIRTUAL
}));
capabilities = Collections.unmodifiableCollection(combined);
}
public JarFileProvider()
{
super();
}
/**
* Creates a layered file system. This method is called if the file system
* is not cached.
*
* @param scheme The URI scheme.
* @param file The file to create the file system on top of.
* @return The file system.
*/
protected FileSystem doCreateFileSystem(final String scheme,
final FileObject file,
final FileSystemOptions fileSystemOptions)
throws FileSystemException
{
final FileName name =
new LayeredFileName(scheme, file.getName(), FileName.ROOT_PATH, FileType.FOLDER);
return new JarFileSystem(name, file, fileSystemOptions);
}
public Collection getCapabilities()
{
return capabilities;
}
}