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annotate src/org/tmatesoft/hg/internal/PathScope.java @ 254:a620f0663a37

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Collect tags for a file - improve performance of 'sparse' manifest reads
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Tue, 16 Aug 2011 04:03:29 +0200
parents 1ec6b327a6ac
children 072b5f3ed0c8
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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.internal;
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18
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19 import java.util.ArrayList;
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20
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21 import org.tmatesoft.hg.util.Path;
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22
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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 class PathScope implements Path.Matcher {
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28 private final Path[] files;
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29 private final Path[] dirs;
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30 private final boolean recursiveDirs;
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31
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32 public PathScope(boolean recursiveDirs, Path... paths) {
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33 if (paths == null) {
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34 throw new IllegalArgumentException();
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35 }
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36 this.recursiveDirs = recursiveDirs;
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37 ArrayList<Path> f = new ArrayList<Path>(5);
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38 ArrayList<Path> d = new ArrayList<Path>(5);
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39 for (Path p : paths) {
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40 if (p.isDirectory()) {
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41 d.add(p);
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42 } else {
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43 f.add(p);
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44 }
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45 }
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46 files = f.toArray(new Path[f.size()]);
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47 dirs = d.toArray(new Path[d.size()]);
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48 }
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49
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50 public boolean accept(Path path) {
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51 if (path.isDirectory()) {
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52 // either equals to or parent of a directory we know about.
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53 // If recursiveDirs, accept also if nested to one of our directories.
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54 // If one of configured files is nested under the path, accept.
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55 for (Path d : dirs) {
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56 switch(d.compareWith(path)) {
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57 case Same : return true;
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58 case Nested : return true;
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59 case Parent : return recursiveDirs;
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60 }
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61 }
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62 for (Path f : files) {
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63 if (f.compareWith(path) == Path.CompareResult.Nested) {
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64 return true;
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65 }
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66 }
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67 } else {
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68 for (Path d : dirs) {
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69 if (d.compareWith(path) == Path.CompareResult.Parent) {
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70 return true;
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71 }
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72 }
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73 for (Path f : files) {
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74 if (f.equals(path)) {
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75 return true;
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76 }
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77 }
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78 // either lives in a directory in out scope
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79 // or there's a file that matches the path
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80 }
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81 // TODO Auto-generated method stub
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82 return false;
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83 }
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84 }