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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *      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.vfs2.provider.local;
18  
19  import java.io.File;
20  import java.io.FilePermission;
21  import java.util.Collection;
22  
23  import org.apache.commons.vfs2.Capability;
24  import org.apache.commons.vfs2.FileName;
25  import org.apache.commons.vfs2.FileObject;
26  import org.apache.commons.vfs2.FileSelector;
27  import org.apache.commons.vfs2.FileSystemException;
28  import org.apache.commons.vfs2.FileSystemOptions;
29  import org.apache.commons.vfs2.provider.AbstractFileName;
30  import org.apache.commons.vfs2.provider.AbstractFileSystem;
31  import org.apache.commons.vfs2.util.FileObjectUtils;
32  
33  /**
34   * A local file system.
35   */
36  public class LocalFileSystem extends AbstractFileSystem {
37  
38      private final String rootFile;
39  
40      public LocalFileSystem(final FileName rootName, final String rootFile, final FileSystemOptions opts) {
41          super(rootName, null, opts);
42          this.rootFile = rootFile;
43      }
44  
45      /**
46       * Returns the capabilities of this file system.
47       */
48      @Override
49      protected void addCapabilities(final Collection<Capability> caps) {
50          caps.addAll(DefaultLocalFileProvider.capabilities);
51      }
52  
53      /**
54       * Creates a file object.
55       */
56      @Override
57      protected FileObject createFile(final AbstractFileName name) throws FileSystemException {
58          // Create the file
59          return new LocalFile(this, rootFile, name);
60      }
61  
62      /**
63       * Creates a temporary local copy of a file and its descendants.
64       */
65      @Override
66      protected File doReplicateFile(final FileObject fileObject, final FileSelector selector) throws Exception {
67          final LocalFile../../../../org/apache/commons/vfs2/provider/local/LocalFile.html#LocalFile">LocalFile localFile = (LocalFile) FileObjectUtils.getAbstractFileObject(fileObject);
68          final File file = localFile.getLocalFile();
69          final SecurityManager sm = System.getSecurityManager();
70          if (sm != null) {
71              sm.checkPermission(new FilePermission(file.getAbsolutePath(), "read"));
72          }
73          return file;
74      }
75  
76  }