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.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: 2006-11-28 22:15:24 -0800 (Tue, 28 Nov 2006) $
28: */
29: public class GenericFileNameParser extends LocalFileNameParser {
30: private static final GenericFileNameParser INSTANCE = new GenericFileNameParser();
31:
32: /**
33: * retrieve a instance to this parser
34: *
35: * @return the parser
36: */
37: public static GenericFileNameParser getInstance() {
38: return INSTANCE;
39: }
40:
41: /**
42: * Pops the root prefix off a URI, which has had the scheme removed.
43: */
44: protected String extractRootPrefix(final String uri,
45: final StringBuffer name) throws FileSystemException {
46: // TODO - this class isn't generic at all. Need to fix this
47:
48: // Looking for <sep>
49: if (name.length() == 0 || name.charAt(0) != '/') {
50: throw new FileSystemException(
51: "vfs.provider.local/not-absolute-file-name.error",
52: uri);
53: }
54:
55: // do not strip the separator, BUT also return it ...
56: return "/";
57: }
58:
59: /*
60: * ... this is why whe need this:
61: * here the rootFilename can only be "/" (see above) put this "/" is also in the pathname
62: * so its of no value for the LocalFileName instance
63: */
64: protected FileName createFileName(String scheme,
65: final String rootFile, final String path,
66: final FileType type) {
67: return new LocalFileName(scheme, "", path, type);
68: }
69: }
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