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annotate src/org/tmatesoft/hg/repo/HgIgnore.java @ 78:c25c5c348d1b

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author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Tue, 25 Jan 2011 02:13:53 +0100
parents 6f1b88693d48
children c2ce1cfaeb9e
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1 /*
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2 * Copyright (c) 2010-2011 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@svnkit.com
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16 */
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17 package org.tmatesoft.hg.repo;
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18
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19 import java.io.BufferedReader;
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20 import java.io.File;
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21 import java.io.FileReader;
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22 import java.io.IOException;
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23 import java.util.Collections;
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24 import java.util.Set;
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25 import java.util.TreeSet;
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26
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27 /**
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28 *
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29 * @author Artem Tikhomirov
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30 * @author TMate Software Ltd.
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31 */
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32 public class HgIgnore {
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33
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34 private final HgRepository repo;
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35 private Set<String> entries;
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36
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37 public HgIgnore(HgRepository localRepo) {
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38 this.repo = localRepo;
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39 }
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40
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41 private void read() {
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42 entries = Collections.emptySet();
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43 File hgignoreFile = new File(repo.getRepositoryRoot().getParentFile(), ".hgignore");
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44 if (!hgignoreFile.exists()) {
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45 return;
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46 }
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47 entries = new TreeSet<String>();
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48 try {
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49 BufferedReader fr = new BufferedReader(new FileReader(hgignoreFile));
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50 String line;
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51 while ((line = fr.readLine()) != null) {
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52 // FIXME need to detect syntax:glob and other parameters
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53 entries.add(line.trim()); // shall I account for local paths in the file (i.e. back-slashed on windows)?
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54 }
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55 } catch (IOException ex) {
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56 ex.printStackTrace(); // log warn
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57 }
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58 }
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59
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60 public void reset() {
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61 // FIXME does anyone really need to clear HgIgnore? Perhaps, repo may return new instance each time,
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62 // which is used throughout invocation and then discarded?
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63 entries = null;
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64 }
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65
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66 public boolean isIgnored(String path) {
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67 if (entries == null) {
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68 read();
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69 }
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70 if (entries.contains(path)) {
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71 // easy part
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72 return true;
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73 }
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74 // substrings are memory-friendly
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75 int x = 0, i = path.indexOf('/', 0);
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76 while (i != -1) {
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77 if (entries.contains(path.substring(x, i))) {
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78 return true;
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79 }
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80 // try one with ending slash
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81 if (entries.contains(path.substring(x, i+1))) { // even if i is last index, i+1 is safe here
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82 return true;
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83 }
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84 x = i+1;
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85 i = path.indexOf('/', x);
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86 }
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87 return false;
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88 }
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89 }