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Apache Commons VFS is a Virtual File System library.
/*
* 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.vfs2.provider.local;
import java.io.File;
import java.io.FilePermission;
import java.util.Collection;
import org.apache.commons.vfs2.Capability;
import org.apache.commons.vfs2.FileName;
import org.apache.commons.vfs2.FileObject;
import org.apache.commons.vfs2.FileSelector;
import org.apache.commons.vfs2.FileSystemException;
import org.apache.commons.vfs2.FileSystemOptions;
import org.apache.commons.vfs2.provider.AbstractFileName;
import org.apache.commons.vfs2.provider.AbstractFileSystem;
import org.apache.commons.vfs2.util.FileObjectUtils;
/**
* A local file system.
*/
public class LocalFileSystem extends AbstractFileSystem {
private final String rootFile;
public LocalFileSystem(final FileName rootName, final String rootFile, final FileSystemOptions opts) {
super(rootName, null, opts);
this.rootFile = rootFile;
}
/**
* Creates a file object.
*/
@Override
protected FileObject createFile(final AbstractFileName name) throws FileSystemException {
// Create the file
return new LocalFile(this, rootFile, name);
}
/**
* Returns the capabilities of this file system.
*/
@Override
protected void addCapabilities(final Collection caps) {
caps.addAll(DefaultLocalFileProvider.capabilities);
}
/**
* Creates a temporary local copy of a file and its descendants.
*/
@Override
protected File doReplicateFile(final FileObject fileObject, final FileSelector selector) throws Exception {
final LocalFile localFile = (LocalFile) FileObjectUtils.getAbstractFileObject(fileObject);
final File file = localFile.getLocalFile();
final SecurityManager sm = System.getSecurityManager();
if (sm != null) {
final FilePermission requiredPerm = new FilePermission(file.getAbsolutePath(), "read");
sm.checkPermission(requiredPerm);
}
return file;
}
}
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