01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: */
17: package org.apache.commons.vfs.provider.local;
18:
19: import org.apache.commons.vfs.FileName;
20: import org.apache.commons.vfs.FileObject;
21: import org.apache.commons.vfs.FileSelector;
22: import org.apache.commons.vfs.FileSystem;
23: import org.apache.commons.vfs.FileSystemException;
24: import org.apache.commons.vfs.FileSystemOptions;
25: import org.apache.commons.vfs.provider.AbstractFileSystem;
26:
27: import java.io.File;
28: import java.io.FilePermission;
29: import java.util.Collection;
30:
31: /**
32: * A local file system.
33: *
34: * @author <a href="mailto:adammurdoch@apache.org">Adam Murdoch</a>
35: * @version $Revision: 480428 $ $Date: 2006-11-28 22:15:24 -0800 (Tue, 28 Nov 2006) $
36: */
37: public class LocalFileSystem extends AbstractFileSystem implements
38: FileSystem {
39: private final String rootFile;
40:
41: public LocalFileSystem(final FileName rootName,
42: final String rootFile, final FileSystemOptions opts) {
43: super (rootName, null, opts);
44: this .rootFile = rootFile;
45: }
46:
47: /**
48: * Creates a file object.
49: */
50: protected FileObject createFile(final FileName name)
51: throws FileSystemException {
52: // Create the file
53: return new LocalFile(this , rootFile, name);
54: }
55:
56: /**
57: * Returns the capabilities of this file system.
58: */
59: protected void addCapabilities(final Collection caps) {
60: caps.addAll(DefaultLocalFileProvider.capabilities);
61: }
62:
63: /**
64: * Creates a temporary local copy of a file and its descendents.
65: */
66: protected File doReplicateFile(final FileObject fileObject,
67: final FileSelector selector) throws Exception {
68: final LocalFile localFile = (LocalFile) fileObject;
69: final File file = localFile.getLocalFile();
70: final SecurityManager sm = System.getSecurityManager();
71: if (sm != null) {
72: final FilePermission requiredPerm = new FilePermission(file
73: .getAbsolutePath(), "read");
74: sm.checkPermission(requiredPerm);
75: }
76: return file;
77: }
78:
79: }
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