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.vfs.provider.local;
18
19 import org.apache.commons.vfs.FileName;
20 import org.apache.commons.vfs.FileSystemException;
21 import org.apache.commons.vfs.FileType;
22
23 /***
24 * A general-purpose file name parser.
25 *
26 * @author <a href="mailto:adammurdoch@apache.org">Adam Murdoch</a>
27 * @version $Revision: 480428 $ $Date: 2006-11-29 07:15:24 +0100 (Mi, 29 Nov 2006) $
28 */
29 public class GenericFileNameParser
30 extends LocalFileNameParser
31 {
32 private static final GenericFileNameParser INSTANCE = new GenericFileNameParser();
33
34 /***
35 * retrieve a instance to this parser
36 *
37 * @return the parser
38 */
39 public static GenericFileNameParser getInstance()
40 {
41 return INSTANCE;
42 }
43
44 /***
45 * Pops the root prefix off a URI, which has had the scheme removed.
46 */
47 protected String extractRootPrefix(final String uri,
48 final StringBuffer name)
49 throws FileSystemException
50 {
51 // TODO - this class isn't generic at all. Need to fix this
52
53 // Looking for <sep>
54 if (name.length() == 0 || name.charAt(0) != '/')
55 {
56 throw new FileSystemException("vfs.provider.local/not-absolute-file-name.error", uri);
57 }
58
59 // do not strip the separator, BUT also return it ...
60 return "/";
61 }
62
63 /*
64 * ... this is why whe need this:
65 * here the rootFilename can only be "/" (see above) put this "/" is also in the pathname
66 * so its of no value for the LocalFileName instance
67 */
68 protected FileName createFileName(String scheme, final String rootFile, final String path, final FileType type)
69 {
70 return new LocalFileName(scheme, "", path, type);
71 }
72 }