Mercurial > jhg
annotate src/org/tmatesoft/hg/util/FileInfo.java @ 458:c95cd5994ba2
Tests: with more precise relations for files/dirs, ImmediateChild is the right expectation
author | Artem Tikhomirov <tikhomirov.artem@gmail.com> |
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date | Tue, 19 Jun 2012 21:06:21 +0200 (2012-06-19) |
parents | 7f27122011c3 |
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Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
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1 /* |
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2 * Copyright (c) 2011-2012 TMate Software Ltd |
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3 * |
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4 * This program is free software; you can redistribute it and/or modify |
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5 * it under the terms of the GNU General Public License as published by |
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6 * the Free Software Foundation; version 2 of the License. |
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7 * |
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8 * This program is distributed in the hope that it will be useful, |
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9 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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11 * GNU General Public License for more details. |
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12 * |
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13 * For information on how to redistribute this software under |
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14 * the terms of a license other than GNU General Public License |
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15 * contact TMate Software at support@hg4j.com |
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16 */ |
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17 package org.tmatesoft.hg.util; |
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18 |
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19 import java.nio.channels.ReadableByteChannel; |
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20 |
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21 /** |
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22 * Subset of File-related functionality to support other than {@link java.io.File}-based {@link FileIterator} implementations |
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23 * |
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24 * @author Artem Tikhomirov |
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25 * @author TMate Software Ltd. |
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26 */ |
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27 public interface FileInfo { |
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28 |
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29 /** |
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30 * @return true if the filesystem object described by this instance exists, is a regular file and can be read |
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31 */ |
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32 boolean exists(); |
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33 |
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34 /** |
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35 * File last modification time, in seconds since Jan 1, 1970. E.g. <code> {@link java.io.File#lastModified()} / 1000 </code> |
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36 * @return int value representing time, in seconds, when file was last modified. |
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37 */ |
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38 int lastModified(); |
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39 |
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40 /** |
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41 * @return file size |
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42 */ |
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43 long length(); |
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44 |
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45 /** |
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46 * Access file contents. Caller is responsible to close the channel. |
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47 * @return file reader object, never <code>null</code> |
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48 */ |
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49 ReadableByteChannel newInputChannel(); |
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50 |
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51 /** |
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52 * This method is invoked only if source FileIterator tells <code>true</code> for {@link FileIterator#supportsExecFlag()} |
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53 * @return <code>true</code> if this object describes an executable file |
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54 */ |
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55 boolean isExecutable(); |
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56 |
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57 /** |
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58 * This method is be invoked only if source FileIterator tells <code>true</code> for {@link FileIterator#supportsLinkFlag()}. |
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59 * @return <code>true</code> if this file object represents a symbolic link |
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60 */ |
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61 boolean isSymlink(); |
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62 } |