1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.corrector;
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3 |
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4 | import static org.openstreetmap.josm.tools.I18n.tr;
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5 |
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6 | import java.util.ArrayList;
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7 | import java.util.Arrays;
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8 | import java.util.Collection;
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9 | import java.util.HashMap;
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10 | import java.util.List;
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11 | import java.util.Map;
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12 | import java.util.regex.Matcher;
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13 | import java.util.regex.Pattern;
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14 |
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15 | import org.openstreetmap.josm.command.Command;
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16 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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17 | import org.openstreetmap.josm.data.osm.OsmUtils;
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18 | import org.openstreetmap.josm.data.osm.Relation;
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19 | import org.openstreetmap.josm.data.osm.RelationMember;
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20 | import org.openstreetmap.josm.data.osm.Way;
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21 |
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22 | /**
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23 | * A ReverseWayTagCorrector handles necessary corrections of tags
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24 | * when a way is reversed. E.g. oneway=yes needs to be changed
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25 | * to oneway=-1 and vice versa.
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26 | *
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27 | * The Corrector offers the automatic resolution in an dialog
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28 | * for the user to confirm.
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29 | */
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30 |
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31 | public class ReverseWayTagCorrector extends TagCorrector<Way> {
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32 |
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33 | private static class PrefixSuffixSwitcher {
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34 |
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35 | private static final String SEPARATOR = "[:_]?";
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36 |
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37 | private final String a;
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38 | private final String b;
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39 | private final Pattern startPattern;
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40 | private final Pattern endPattern;
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41 |
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42 | public PrefixSuffixSwitcher(String a, String b) {
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43 | this.a = a;
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44 | this.b = b;
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45 | startPattern = Pattern.compile(
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46 | "^(" + a + "|" + b + ")(" + SEPARATOR + "|$)",
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47 | Pattern.CASE_INSENSITIVE);
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48 | endPattern = Pattern.compile("^.*" +
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49 | SEPARATOR + "(" + a + "|" + b + ")$",
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50 | Pattern.CASE_INSENSITIVE);
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51 | }
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52 |
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53 | public String apply(String text) {
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54 | Matcher m = startPattern.matcher(text);
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55 | if (!m.lookingAt()) {
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56 | m = endPattern.matcher(text);
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57 | }
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58 |
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59 | if (m.lookingAt()) {
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60 | String leftRight = m.group(1).toLowerCase();
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61 |
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62 | StringBuilder result = new StringBuilder();
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63 | result.append(text.substring(0, m.start(1)));
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64 | result.append(leftRight.equals(a) ? b : a);
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65 | result.append(text.substring(m.end(1)));
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66 |
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67 | return result.toString();
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68 | }
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69 | return text;
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70 | }
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71 | }
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72 |
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73 | private static PrefixSuffixSwitcher[] prefixSuffixSwitchers =
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74 | new PrefixSuffixSwitcher[] {
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75 | new PrefixSuffixSwitcher("left", "right"),
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76 | new PrefixSuffixSwitcher("forward", "backward"),
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77 | new PrefixSuffixSwitcher("forwards", "backwards"),
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78 | new PrefixSuffixSwitcher("up", "down"),
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79 | new PrefixSuffixSwitcher("east", "west"),
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80 | new PrefixSuffixSwitcher("north", "south"),
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81 | };
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82 |
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83 | private static ArrayList<String> reversibleTags = new ArrayList<String>(
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84 | Arrays.asList(new String[] {"oneway", "incline", "direction"}));
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85 |
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86 | public static boolean isReversible(Way way) {
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87 | for (String key : way.keySet()) {
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88 | if (reversibleTags.contains(key)) return false;
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89 | for (PrefixSuffixSwitcher prefixSuffixSwitcher : prefixSuffixSwitchers) {
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90 | if (!key.equals(prefixSuffixSwitcher.apply(key))) return false;
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91 | }
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92 | }
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93 |
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94 | return true;
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95 | }
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96 |
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97 | public static List<Way> irreversibleWays(List<Way> ways) {
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98 | List<Way> newWays = new ArrayList<Way>(ways);
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99 | for (Way way : ways) {
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100 | if (isReversible(way)) {
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101 | newWays.remove(way);
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102 | }
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103 | }
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104 | return newWays;
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105 | }
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106 |
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107 | public String invertNumber(String value) {
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108 | Pattern pattern = Pattern.compile("^([+-]?)(\\d.*)$", Pattern.CASE_INSENSITIVE);
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109 | Matcher matcher = pattern.matcher(value);
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110 | if (!matcher.matches()) return value;
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111 | String sign = matcher.group(1);
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112 | String rest = matcher.group(2);
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113 | sign = sign.equals("-") ? "" : "-";
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114 | return sign + rest;
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115 | }
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116 |
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117 | @Override
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118 | public Collection<Command> execute(Way oldway, Way way) throws UserCancelException {
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119 | Map<OsmPrimitive, List<TagCorrection>> tagCorrectionsMap =
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120 | new HashMap<OsmPrimitive, List<TagCorrection>>();
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121 |
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122 | ArrayList<TagCorrection> tagCorrections = new ArrayList<TagCorrection>();
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123 | for (String key : way.keySet()) {
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124 | String newKey = key;
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125 | String value = way.get(key);
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126 | String newValue = value;
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127 |
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128 | if (key.equals("oneway")) {
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129 | if (OsmUtils.isReversed(value)) {
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130 | newValue = OsmUtils.trueval;
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131 | } else if (OsmUtils.isTrue(value)) {
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132 | newValue = OsmUtils.reverseval;
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133 | }
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134 | } else if (key.equals("incline") || key.equals("direction")) {
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135 | PrefixSuffixSwitcher switcher = new PrefixSuffixSwitcher("up", "down");
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136 | newValue = switcher.apply(value);
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137 | if (newValue.equals(value)) {
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138 | newValue = invertNumber(value);
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139 | }
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140 | } else {
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141 | for (PrefixSuffixSwitcher prefixSuffixSwitcher : prefixSuffixSwitchers) {
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142 | newKey = prefixSuffixSwitcher.apply(key);
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143 | if (!key.equals(newKey)) {
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144 | break;
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145 | }
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146 | newValue = prefixSuffixSwitcher.apply(value);
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147 | if (!value.equals(newValue)) {
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148 | break;
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149 | }
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150 | }
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151 | }
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152 |
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153 | boolean needsCorrection = !key.equals(newKey);
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154 | if (way.get(newKey) != null && way.get(newKey).equals(newValue)) {
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155 | needsCorrection = false;
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156 | }
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157 | if (!value.equals(newValue)) {
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158 | needsCorrection = true;
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159 | }
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160 |
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161 | if (needsCorrection) {
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162 | tagCorrections.add(new TagCorrection(key, value, newKey, newValue));
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163 | }
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164 | }
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165 | if (!tagCorrections.isEmpty()) {
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166 | tagCorrectionsMap.put(way, tagCorrections);
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167 | }
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168 |
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169 | Map<OsmPrimitive, List<RoleCorrection>> roleCorrectionMap =
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170 | new HashMap<OsmPrimitive, List<RoleCorrection>>();
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171 | ArrayList<RoleCorrection> roleCorrections = new ArrayList<RoleCorrection>();
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172 |
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173 | Collection<OsmPrimitive> referrers = oldway.getReferrers();
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174 | for (OsmPrimitive referrer: referrers) {
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175 | if (! (referrer instanceof Relation)) {
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176 | continue;
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177 | }
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178 | Relation relation = (Relation)referrer;
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179 | int position = 0;
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180 | for (RelationMember member : relation.getMembers()) {
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181 | if (!member.getMember().hasEqualSemanticAttributes(oldway)
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182 | || !member.hasRole()) {
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183 | position++;
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184 | continue;
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185 | }
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186 |
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187 | boolean found = false;
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188 | String newRole = null;
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189 | for (PrefixSuffixSwitcher prefixSuffixSwitcher : prefixSuffixSwitchers) {
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190 | newRole = prefixSuffixSwitcher.apply(member.getRole());
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191 | if (!newRole.equals(member.getRole())) {
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192 | found = true;
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193 | break;
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194 | }
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195 | }
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196 |
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197 | if (found) {
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198 | roleCorrections.add(new RoleCorrection(relation, position, member, newRole));
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199 | }
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200 |
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201 | position++;
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202 | }
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203 | }
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204 | if (!roleCorrections.isEmpty()) {
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205 | roleCorrectionMap.put(way, roleCorrections);
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206 | }
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207 |
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208 | return applyCorrections(tagCorrectionsMap, roleCorrectionMap,
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209 | tr("When reversing this way, the following changes to properties "
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210 | + "of the way and its nodes are suggested in order "
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211 | + "to maintain data consistency."));
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212 | }
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213 | }
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