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comparison src/org/tmatesoft/hg/util/FileInfo.java @ 287:ed6b74a58c66

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Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 07 Sep 2011 09:33:27 +0200
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children 7f27122011c3
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286:954763c82cc3 287:ed6b74a58c66
1 /*
2 * Copyright (c) 2011 TMate Software Ltd
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 2 of the License.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * For information on how to redistribute this software under
14 * the terms of a license other than GNU General Public License
15 * contact TMate Software at support@hg4j.com
16 */
17 package org.tmatesoft.hg.util;
18
19 import java.nio.channels.ReadableByteChannel;
20
21 /**
22 * Subset of File-related functionality to support other than {@link java.io.File}-based {@link FileIterator} implementations
23 *
24 * @author Artem Tikhomirov
25 * @author TMate Software Ltd.
26 */
27 public interface FileInfo {
28
29 /**
30 * @return true if the filesystem object described by this instance exists, is a regular file and can be read
31 */
32 boolean exists();
33
34 /**
35 * File last modification time, in seconds since Jan 1, 1970. E.g. <code> {@link java.io.File#lastModified()} / 1000 </code>
36 * @return int value representing time, in seconds, when file was last modified.
37 */
38 int lastModified();
39
40 /**
41 * @return file size
42 */
43 long length();
44
45 /**
46 * Access file contents. Caller is responsible to close the channel.
47 * @return file reader object, never <code>null</code>
48 */
49 ReadableByteChannel newInputChannel();
50 }