1 /*
2 * Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package sun.nio.fs;
27
28 import java.nio.file.Path;
29 import java.nio.file.spi.FileTypeDetector;
30 import java.util.Locale;
31 import java.io.IOException;
32
33 /**
34 * Base implementation of FileTypeDetector
35 */
36
37 public abstract class AbstractFileTypeDetector
38 extends FileTypeDetector
39 {
40 protected AbstractFileTypeDetector() {
41 super();
42 }
43
44 /**
45 * Invokes the appropriate probe method to guess a file's content type,
46 * and checks that the content type's syntax is valid.
47 */
48 @Override
49 public final String probeContentType(Path file) throws IOException {
50 if (file == null)
51 throw new NullPointerException("'file' is null");
52 String result = implProbeContentType(file);
53 return (result == null) ? null : parse(result);
54 }
55
56 /**
57 * Probes the given file to guess its content type.
58 */
59 protected abstract String implProbeContentType(Path file)
60 throws IOException;
61
62 /**
63 * Parses a candidate content type into its type and subtype, returning
|
1 /*
2 * Copyright (c) 2008, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package sun.nio.fs;
27
28 import java.nio.file.Path;
29 import java.nio.file.spi.FileTypeDetector;
30 import java.util.Locale;
31 import java.io.IOException;
32
33 /**
34 * Base implementation of FileTypeDetector
35 */
36
37 public abstract class AbstractFileTypeDetector
38 extends FileTypeDetector
39 {
40 /**
41 * Invokes the appropriate probe method to guess a file's content type,
42 * and checks that the content type's syntax is valid.
43 */
44 @Override
45 public final String probeContentType(Path file) throws IOException {
46 if (file == null)
47 throw new NullPointerException("'file' is null");
48 String result = implProbeContentType(file);
49 return (result == null) ? null : parse(result);
50 }
51
52 /**
53 * Probes the given file to guess its content type.
54 */
55 protected abstract String implProbeContentType(Path file)
56 throws IOException;
57
58 /**
59 * Parses a candidate content type into its type and subtype, returning
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