1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.io;
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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.io.PrintWriter;
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7 | import java.util.ArrayList;
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8 | import java.util.Collection;
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9 | import java.util.Comparator;
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10 | import java.util.Date;
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11 | import java.util.List;
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12 | import java.util.Map.Entry;
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13 |
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14 | import org.openstreetmap.josm.data.DataSource;
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15 | import org.openstreetmap.josm.data.coor.CoordinateFormat;
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16 | import org.openstreetmap.josm.data.coor.LatLon;
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17 | import org.openstreetmap.josm.data.osm.AbstractPrimitive;
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18 | import org.openstreetmap.josm.data.osm.Changeset;
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19 | import org.openstreetmap.josm.data.osm.DataSet;
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20 | import org.openstreetmap.josm.data.osm.DataSet.UploadPolicy;
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21 | import org.openstreetmap.josm.data.osm.INode;
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22 | import org.openstreetmap.josm.data.osm.IPrimitive;
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23 | import org.openstreetmap.josm.data.osm.IRelation;
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24 | import org.openstreetmap.josm.data.osm.IWay;
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25 | import org.openstreetmap.josm.data.osm.Node;
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26 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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27 | import org.openstreetmap.josm.data.osm.Relation;
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28 | import org.openstreetmap.josm.data.osm.Tagged;
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29 | import org.openstreetmap.josm.data.osm.Way;
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30 | import org.openstreetmap.josm.data.osm.visitor.PrimitiveVisitor;
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31 | import org.openstreetmap.josm.gui.layer.OsmDataLayer;
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32 | import org.openstreetmap.josm.tools.date.DateUtils;
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33 |
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34 | /**
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35 | * Save the dataset into a stream as osm intern xml format. This is not using any xml library for storing.
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36 | * @author imi
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37 | * @since 59
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38 | */
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39 | public class OsmWriter extends XmlWriter implements PrimitiveVisitor {
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40 |
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41 | /** Default OSM API version */
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42 | public static final String DEFAULT_API_VERSION = "0.6";
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43 |
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44 | private final boolean osmConform;
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45 | private boolean withBody = true;
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46 | private boolean withVisible = true;
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47 | private boolean isOsmChange;
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48 | private String version;
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49 | private Changeset changeset;
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50 |
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51 | /**
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52 | * Constructs a new {@code OsmWriter}.
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53 | * Do not call this directly. Use {@link OsmWriterFactory} instead.
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54 | * @param out print writer
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55 | * @param osmConform if {@code true}, prevents modification attributes to be written to the common part
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56 | * @param version OSM API version (0.6)
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57 | */
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58 | protected OsmWriter(PrintWriter out, boolean osmConform, String version) {
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59 | super(out);
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60 | this.osmConform = osmConform;
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61 | this.version = version == null ? DEFAULT_API_VERSION : version;
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62 | }
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63 |
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64 | /**
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65 | * Sets whether body must be written.
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66 | * @param wb if {@code true} body will be written.
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67 | */
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68 | public void setWithBody(boolean wb) {
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69 | this.withBody = wb;
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70 | }
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71 |
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72 | /**
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73 | * Sets whether 'visible' attribute must be written.
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74 | * @param wv if {@code true} 'visible' attribute will be written.
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75 | * @since 12019
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76 | */
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77 | public void setWithVisible(boolean wv) {
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78 | this.withVisible = wv;
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79 | }
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80 |
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81 | public void setIsOsmChange(boolean isOsmChange) {
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82 | this.isOsmChange = isOsmChange;
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83 | }
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84 |
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85 | public void setChangeset(Changeset cs) {
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86 | this.changeset = cs;
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87 | }
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88 |
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89 | public void setVersion(String v) {
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90 | this.version = v;
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91 | }
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92 |
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93 | public void header() {
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94 | header(UploadPolicy.NORMAL);
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95 | }
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96 |
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97 | public void header(UploadPolicy upload) {
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98 | out.println("<?xml version='1.0' encoding='UTF-8'?>");
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99 | out.print("<osm version='");
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100 | out.print(version);
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101 | if (upload != null && upload != UploadPolicy.NORMAL) {
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102 | out.print("' upload='");
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103 | out.print(upload.getXmlFlag());
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104 | }
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105 | out.println("' generator='JOSM'>");
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106 | }
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107 |
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108 | public void footer() {
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109 | out.println("</osm>");
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110 | }
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111 |
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112 | /**
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113 | * Sorts {@code -1} → {@code -infinity}, then {@code +1} → {@code +infinity}
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114 | */
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115 | protected static final Comparator<AbstractPrimitive> byIdComparator = (o1, o2) -> {
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116 | final long i1 = o1.getUniqueId();
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117 | final long i2 = o2.getUniqueId();
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118 | if (i1 < 0 && i2 < 0) {
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119 | return Long.compare(i2, i1);
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120 | } else {
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121 | return Long.compare(i1, i2);
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122 | }
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123 | };
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124 |
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125 | protected <T extends OsmPrimitive> Collection<T> sortById(Collection<T> primitives) {
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126 | List<T> result = new ArrayList<>(primitives.size());
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127 | result.addAll(primitives);
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128 | result.sort(byIdComparator);
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129 | return result;
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130 | }
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131 |
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132 | public void writeLayer(OsmDataLayer layer) {
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133 | header(layer.data.getUploadPolicy());
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134 | writeDataSources(layer.data);
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135 | writeContent(layer.data);
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136 | footer();
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137 | }
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138 |
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139 | /**
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140 | * Writes the contents of the given dataset (nodes, then ways, then relations)
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141 | * @param ds The dataset to write
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142 | */
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143 | public void writeContent(DataSet ds) {
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144 | setWithVisible(UploadPolicy.NORMAL.equals(ds.getUploadPolicy()));
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145 | writeNodes(ds.getNodes());
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146 | writeWays(ds.getWays());
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147 | writeRelations(ds.getRelations());
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148 | }
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149 |
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150 | /**
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151 | * Writes the given nodes sorted by id
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152 | * @param nodes The nodes to write
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153 | * @since 5737
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154 | */
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155 | public void writeNodes(Collection<Node> nodes) {
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156 | for (Node n : sortById(nodes)) {
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157 | if (shouldWrite(n)) {
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158 | visit(n);
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159 | }
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160 | }
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161 | }
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162 |
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163 | /**
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164 | * Writes the given ways sorted by id
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165 | * @param ways The ways to write
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166 | * @since 5737
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167 | */
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168 | public void writeWays(Collection<Way> ways) {
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169 | for (Way w : sortById(ways)) {
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170 | if (shouldWrite(w)) {
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171 | visit(w);
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172 | }
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173 | }
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174 | }
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175 |
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176 | /**
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177 | * Writes the given relations sorted by id
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178 | * @param relations The relations to write
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179 | * @since 5737
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180 | */
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181 | public void writeRelations(Collection<Relation> relations) {
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182 | for (Relation r : sortById(relations)) {
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183 | if (shouldWrite(r)) {
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184 | visit(r);
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185 | }
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186 | }
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187 | }
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188 |
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189 | protected boolean shouldWrite(OsmPrimitive osm) {
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190 | return !osm.isNewOrUndeleted() || !osm.isDeleted();
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191 | }
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192 |
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193 | public void writeDataSources(DataSet ds) {
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194 | for (DataSource s : ds.getDataSources()) {
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195 | out.println(" <bounds minlat='"
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196 | + s.bounds.getMin().latToString(CoordinateFormat.DECIMAL_DEGREES)
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197 | +"' minlon='"
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198 | + s.bounds.getMin().lonToString(CoordinateFormat.DECIMAL_DEGREES)
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199 | +"' maxlat='"
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200 | + s.bounds.getMax().latToString(CoordinateFormat.DECIMAL_DEGREES)
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201 | +"' maxlon='"
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202 | + s.bounds.getMax().lonToString(CoordinateFormat.DECIMAL_DEGREES)
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203 | +"' origin='"+XmlWriter.encode(s.origin)+"' />");
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204 | }
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205 | }
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206 |
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207 | void writeLatLon(LatLon ll) {
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208 | if (ll != null) {
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209 | out.print(" lat='"+LatLon.cDdHighPecisionFormatter.format(ll.lat())+
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210 | "' lon='"+LatLon.cDdHighPecisionFormatter.format(ll.lon())+'\'');
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211 | }
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212 | }
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213 |
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214 | @Override
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215 | public void visit(INode n) {
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216 | if (n.isIncomplete()) return;
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217 | addCommon(n, "node");
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218 | if (!withBody) {
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219 | out.println("/>");
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220 | } else {
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221 | writeLatLon(n.getCoor());
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222 | addTags(n, "node", true);
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223 | }
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224 | }
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225 |
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226 | @Override
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227 | public void visit(IWay w) {
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228 | if (w.isIncomplete()) return;
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229 | addCommon(w, "way");
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230 | if (!withBody) {
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231 | out.println("/>");
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232 | } else {
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233 | out.println(">");
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234 | for (int i = 0; i < w.getNodesCount(); ++i) {
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235 | out.println(" <nd ref='"+w.getNodeId(i) +"' />");
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236 | }
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237 | addTags(w, "way", false);
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238 | }
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239 | }
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240 |
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241 | @Override
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242 | public void visit(IRelation e) {
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243 | if (e.isIncomplete()) return;
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244 | addCommon(e, "relation");
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245 | if (!withBody) {
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246 | out.println("/>");
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247 | } else {
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248 | out.println(">");
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249 | for (int i = 0; i < e.getMembersCount(); ++i) {
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250 | out.print(" <member type='");
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251 | out.print(e.getMemberType(i).getAPIName());
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252 | out.println("' ref='"+e.getMemberId(i)+"' role='" +
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253 | XmlWriter.encode(e.getRole(i)) + "' />");
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254 | }
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255 | addTags(e, "relation", false);
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256 | }
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257 | }
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258 |
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259 | public void visit(Changeset cs) {
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260 | out.print(" <changeset id='"+cs.getId()+'\'');
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261 | if (cs.getUser() != null) {
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262 | out.print(" user='"+ XmlWriter.encode(cs.getUser().getName()) +'\'');
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263 | out.print(" uid='"+cs.getUser().getId() +'\'');
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264 | }
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265 | Date createdDate = cs.getCreatedAt();
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266 | if (createdDate != null) {
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267 | out.print(" created_at='"+DateUtils.fromDate(createdDate) +'\'');
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268 | }
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269 | Date closedDate = cs.getClosedAt();
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270 | if (closedDate != null) {
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271 | out.print(" closed_at='"+DateUtils.fromDate(closedDate) +'\'');
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272 | }
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273 | out.print(" open='"+ (cs.isOpen() ? "true" : "false") +'\'');
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274 | if (cs.getMin() != null) {
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275 | out.print(" min_lon='"+ cs.getMin().lonToString(CoordinateFormat.DECIMAL_DEGREES) +'\'');
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276 | out.print(" min_lat='"+ cs.getMin().latToString(CoordinateFormat.DECIMAL_DEGREES) +'\'');
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277 | }
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278 | if (cs.getMax() != null) {
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279 | out.print(" max_lon='"+ cs.getMin().lonToString(CoordinateFormat.DECIMAL_DEGREES) +'\'');
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280 | out.print(" max_lat='"+ cs.getMin().latToString(CoordinateFormat.DECIMAL_DEGREES) +'\'');
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281 | }
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282 | out.println(">");
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283 | addTags(cs, "changeset", false); // also writes closing </changeset>
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284 | }
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285 |
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286 | protected static final Comparator<Entry<String, String>> byKeyComparator = (o1, o2) -> o1.getKey().compareTo(o2.getKey());
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287 |
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288 | protected void addTags(Tagged osm, String tagname, boolean tagOpen) {
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289 | if (osm.hasKeys()) {
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290 | if (tagOpen) {
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291 | out.println(">");
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292 | }
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293 | List<Entry<String, String>> entries = new ArrayList<>(osm.getKeys().entrySet());
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294 | entries.sort(byKeyComparator);
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295 | for (Entry<String, String> e : entries) {
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296 | out.println(" <tag k='"+ XmlWriter.encode(e.getKey()) +
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297 | "' v='"+XmlWriter.encode(e.getValue())+ "' />");
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298 | }
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299 | out.println(" </" + tagname + '>');
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300 | } else if (tagOpen) {
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301 | out.println(" />");
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302 | } else {
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303 | out.println(" </" + tagname + '>');
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304 | }
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305 | }
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306 |
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307 | /**
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308 | * Add the common part as the form of the tag as well as the XML attributes
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309 | * id, action, user, and visible.
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310 | * @param osm osm primitive
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311 | * @param tagname XML tag matching osm primitive (node, way, relation)
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312 | */
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313 | protected void addCommon(IPrimitive osm, String tagname) {
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314 | out.print(" <"+tagname);
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315 | if (osm.getUniqueId() != 0) {
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316 | out.print(" id='"+ osm.getUniqueId()+'\'');
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317 | } else
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318 | throw new IllegalStateException(tr("Unexpected id 0 for osm primitive found"));
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319 | if (!isOsmChange) {
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320 | if (!osmConform) {
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321 | String action = null;
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322 | if (osm.isDeleted()) {
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323 | action = "delete";
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324 | } else if (osm.isModified()) {
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325 | action = "modify";
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326 | }
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327 | if (action != null) {
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328 | out.print(" action='"+action+'\'');
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329 | }
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330 | }
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331 | if (!osm.isTimestampEmpty()) {
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332 | out.print(" timestamp='"+DateUtils.fromTimestamp(osm.getRawTimestamp())+'\'');
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333 | }
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334 | // user and visible added with 0.4 API
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335 | if (osm.getUser() != null) {
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336 | if (osm.getUser().isLocalUser()) {
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337 | out.print(" user='"+XmlWriter.encode(osm.getUser().getName())+'\'');
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338 | } else if (osm.getUser().isOsmUser()) {
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339 | // uid added with 0.6
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340 | out.print(" uid='"+ osm.getUser().getId()+'\'');
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341 | out.print(" user='"+XmlWriter.encode(osm.getUser().getName())+'\'');
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342 | }
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343 | }
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344 | if (withVisible) {
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345 | out.print(" visible='"+osm.isVisible()+'\'');
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346 | }
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347 | }
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348 | if (osm.getVersion() != 0) {
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349 | out.print(" version='"+osm.getVersion()+'\'');
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350 | }
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351 | if (this.changeset != null && this.changeset.getId() != 0) {
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352 | out.print(" changeset='"+this.changeset.getId()+'\'');
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353 | } else if (osm.getChangesetId() > 0 && !osm.isNew()) {
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354 | out.print(" changeset='"+osm.getChangesetId()+'\'');
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355 | }
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356 | }
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357 | }
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