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annotate src/org/tmatesoft/hg/util/FileInfo.java @ 709:497e697636fc

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Report merged lines as changed block if possible, not as a sequence of added/deleted blocks. To facilitate access to merge parent lines AddBlock got mergeLineAt() method that reports index of the line in the second parent (if any), while insertedAt() has been changed to report index in the first parent always
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 21 Aug 2013 16:23:27 +0200
parents 7f27122011c3
children
rev   line source
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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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19 import java.nio.channels.ReadableByteChannel;
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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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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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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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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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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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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 }