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annotate src/org/tmatesoft/hg/util/Path.java @ 134:afac8ddc5dd2

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author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 16 Feb 2011 21:51:32 +0100
parents 4a948ec83980
children 8248aae33f7d
rev   line source
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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
102
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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 /**
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20 * Identify repository files (not String nor io.File). Convenient for pattern matching. Memory-friendly.
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21 *
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22 * @author Artem Tikhomirov
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23 * @author TMate Software Ltd.
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24 */
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25 public final class Path implements CharSequence, Comparable<Path>/*Cloneable? - although clone for paths make no sense*/{
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26 // private String[] segments;
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27 // private int flags; // dir, unparsed
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28 private String path;
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29
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30 /*package-local*/Path(String p) {
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31 path = p;
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32 }
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33
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34 public int length() {
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35 return path.length();
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36 }
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37
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38 public char charAt(int index) {
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39 return path.charAt(index);
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40 }
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41
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42 public CharSequence subSequence(int start, int end) {
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43 // new Path if start-end matches boundaries of any subpath
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44 return path.substring(start, end);
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45 }
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46
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47 @Override
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48 public String toString() {
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49 return path; // CharSequence demands toString() impl
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50 }
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51
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52 public int compareTo(Path o) {
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53 return path.compareTo(o.path);
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54 }
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55
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56 @Override
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57 public boolean equals(Object obj) {
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58 if (obj != null && getClass() == obj.getClass()) {
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59 return this == obj || path.equals(((Path) obj).path);
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60 }
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61 return false;
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62 }
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63 @Override
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64 public int hashCode() {
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65 return path.hashCode();
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66 }
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68 public static Path create(String path) {
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69 if (path == null) {
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70 throw new IllegalArgumentException();
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71 }
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72 if (path.indexOf('\\') != -1) {
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73 throw new IllegalArgumentException();
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74 }
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75 Path rv = new Path(path);
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76 return rv;
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77 }
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78
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79 /**
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80 * Path filter.
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81 */
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82 public interface Matcher {
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83 public boolean accept(Path path);
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84 }
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85 }