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annotate src/org/tmatesoft/hg/internal/PathScope.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 072b5f3ed0c8
children
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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.internal;
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18
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19 import static org.tmatesoft.hg.util.Path.CompareResult.*;
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20
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21 import java.util.ArrayList;
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22
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23 import org.tmatesoft.hg.util.FileIterator;
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24 import org.tmatesoft.hg.util.Path;
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25 import org.tmatesoft.hg.util.Path.CompareResult;
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26
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27 /**
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28 * <ul>
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29 * <li> Specify folder to get all files in there included, but no subdirs
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30 * <li> Specify folder to get all files and files in subdirectories included
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31 * <li> Specify exact set files (with option to accept or not paths leading to them)
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32 * </ul>
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33 * @author Artem Tikhomirov
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34 * @author TMate Software Ltd.
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35 */
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36 public class PathScope implements Path.Matcher {
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37 private final Path[] files;
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38 private final Path[] dirs;
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39 private final boolean includeNestedDirs;
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40 private final boolean includeParentDirs;
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41 private final boolean includeDirContent;
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42
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43 /**
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44 * See {@link PathScope#PathScope(boolean, boolean, Path...)}
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45 */
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46 public PathScope(boolean recursiveDirs, Path... paths) {
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47 this(true, recursiveDirs, true, paths);
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48 }
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49
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50 /**
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51 * With <code>matchParentDirs</code>, <code>recursiveDirs</code> and <code>matchDirContent</code> set to <code>false</code>,
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52 * this scope matches only exact paths specified.
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53 * <p>
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54 * With <code>matchParentDirs</code> set to <code>true</code>, parent directories for files and folders listed in
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55 * the <code>paths</code> would get accepted as well (handy for {@link FileIterator FileIterators}).
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56 * Note, if supplied path lists a file, parent directory for the file is not matched unless <code>matchParentDirs</code>
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57 * is <code>true</code>. To match file's immediate parent without matching all other parents up to the root, just add file parent
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58 * along with the file to <code>paths</code>.
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59 * <p>
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60 * With <code>recursiveDirs</code> set to <code>true</code>, subdirectories (with files) of directories listed in <code>paths</code> would
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61 * be matched as well. Similar to `a/b/**`
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62 * <p>
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63 * With <code>matchDirContent</code> set to <code>true</code>, files right under any directory listed in <code>path</code> would be matched.
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64 * Similar to `a/b/*`. Makes little sense to set to <code>false</code> when <code>recursiceDirs</code> is <code>true</code>, although may still
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65 * be useful in certain scenarios, e.g. PathScope(false, true, false, "a/") matches files under "a/b/*" and "a/b/c/*", but not files "a/*".
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66 *
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67 * @param matchParentDirs <code>true</code> to accept parent dirs of supplied paths
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68 * @param recursiveDirs <code>true</code> to include subdirectories and files of supplied paths
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69 * @param includeDirContent
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70 * @param paths files and folders to match
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71 */
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72 public PathScope(boolean matchParentDirs, boolean recursiveDirs, boolean matchDirContent, Path... paths) {
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73 if (paths == null) {
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74 throw new IllegalArgumentException();
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75 }
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76 includeParentDirs = matchParentDirs;
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77 includeNestedDirs = recursiveDirs;
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78 includeDirContent = matchDirContent;
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79 ArrayList<Path> f = new ArrayList<Path>(5);
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80 ArrayList<Path> d = new ArrayList<Path>(5);
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81 for (Path p : paths) {
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82 if (p.isDirectory()) {
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83 d.add(p);
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84 } else {
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85 f.add(p);
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86 }
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87 }
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88 files = f.toArray(new Path[f.size()]);
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89 dirs = d.toArray(new Path[d.size()]);
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90 }
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92 public boolean accept(Path path) {
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93 if (path.isDirectory()) {
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94 // either equals to or a parent of a directory we know about (i.e. configured dir is *nested* in supplied arg).
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95 // Also, accept arg if it happened to be nested into configured dir (i.e. one of them is *parent* for the arg),
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96 // and recursiveDirs is true.
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97 for (Path d : dirs) {
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98 switch(d.compareWith(path)) {
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99 case Same : return true;
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100 case ImmediateChild :
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101 case Nested : return includeParentDirs; // path is parent to one of our locations
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102 case ImmediateParent :
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103 case Parent : return includeNestedDirs; // path is nested in one of our locations
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104 }
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105 }
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106 if (!includeParentDirs) {
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107 return false;
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108 }
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109 // If one of configured files is nested under the path, and we shall report parents, accept.
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110 // Note, I don't respect includeDirContent here as with file it's easy to add parent to paths explicitly, if needed.
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111 // (if includeDirContent == .f and includeParentDirs == .f, directory than owns a scope file won't get reported)
229
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112 for (Path f : files) {
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113 CompareResult cr = f.compareWith(path);
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114 if (cr == Nested || cr == ImmediateChild) {
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115 return true;
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116 }
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117 }
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118 } else {
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119 for (Path f : files) {
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120 if (f.equals(path)) {
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121 return true;
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122 }
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123 }
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124 // if interested in nested/recursive dirs, shall check if supplied file is under any of our configured locations
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125 if (!includeNestedDirs && !includeDirContent) {
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126 return false;
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127 }
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128 for (Path d : dirs) {
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129 CompareResult cr = d.compareWith(path);
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130 if (includeNestedDirs && cr == Parent) {
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131 // file is nested in one of our locations
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132 return true;
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133 }
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134 if (includeDirContent && cr == ImmediateParent) {
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135 // file is right under one of our directories, and includeDirContents is .t
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136 return true;
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137 }
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138 // try another directory
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139 }
229
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140 }
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141 return false;
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142 }
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143 }