/*
* Copyright 2002-2005 The Apache Software Foundation.
*
* Licensed 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.compressed;
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.AbstractLayeredFileProvider;
import org.apache.commons.vfs.provider.FileProvider;
import org.apache.commons.vfs.provider.LayeredFileName;
import java.util.Collection;
/**
* A file system provider for compressed files. Provides read-only file
* systems.
*
* @author <a href="mailto:imario@apache.org">Mario Ivankovits</a>
*/
public abstract class CompressedFileFileProvider
extends AbstractLayeredFileProvider
implements FileProvider
{
public CompressedFileFileProvider()
{
super();
}
/**
* Parses an absolute URI.
*
* @param uri The URI to parse.
*/
/*
public FileName parseUri(final String uri)
throws FileSystemException
{
return ZipFileName.parseUri(uri);
}
*/
/**
* 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 createFileSystem(name, file, fileSystemOptions);
}
protected abstract FileSystem createFileSystem(final FileName name, final FileObject file, final FileSystemOptions fileSystemOptions) throws FileSystemException;
public abstract Collection getCapabilities();
}