Mercurial > jhg
annotate src/org/tmatesoft/hg/util/RegularFileInfo.java @ 305:ae8d116f4ee2
Experimental code to build file history
author | Artem Tikhomirov <tikhomirov.artem@gmail.com> |
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date | Thu, 22 Sep 2011 03:57:38 +0200 |
parents | 981f9f50bb6c |
children | 7f27122011c3 |
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1 /* |
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2 * Copyright (c) 2011 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.io.File; |
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20 import java.io.FileInputStream; |
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21 import java.io.FileNotFoundException; |
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22 import java.io.IOException; |
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23 import java.nio.ByteBuffer; |
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24 import java.nio.channels.ReadableByteChannel; |
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25 |
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26 import org.tmatesoft.hg.internal.StreamLogFacility; |
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27 |
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28 /** |
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29 * |
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30 * @author Artem Tikhomirov |
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31 * @author TMate Software Ltd. |
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32 */ |
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33 public class RegularFileInfo implements FileInfo { |
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34 private File file; |
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35 |
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36 public RegularFileInfo() { |
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37 } |
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38 |
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39 public void init(File f) { |
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40 file = f; |
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41 } |
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42 |
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43 public boolean exists() { |
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44 return file.canRead() && file.isFile(); |
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45 } |
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46 |
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47 public int lastModified() { |
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48 return (int) (file.lastModified() / 1000); |
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49 } |
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50 |
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51 public long length() { |
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52 return file.length(); |
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53 } |
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54 |
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55 public ReadableByteChannel newInputChannel() { |
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56 try { |
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57 return new FileInputStream(file).getChannel(); |
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58 } catch (FileNotFoundException ex) { |
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59 StreamLogFacility.newDefault().debug(getClass(), ex, null); |
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60 // shall not happen, provided this class is used correctly |
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61 return new ReadableByteChannel() { |
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62 |
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63 public boolean isOpen() { |
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64 return true; |
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65 } |
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66 |
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67 public void close() throws IOException { |
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68 } |
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69 |
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70 public int read(ByteBuffer dst) throws IOException { |
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71 // EOF right away |
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72 return -1; |
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73 } |
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74 }; |
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75 } |
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76 } |
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77 |
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78 } |