1 | // License: GPL. Copyright 2007 by Immanuel Scholz and others
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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.Collections;
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10 | import java.util.Comparator;
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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.coor.CoordinateFormat;
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15 | import org.openstreetmap.josm.data.osm.Changeset;
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16 | import org.openstreetmap.josm.data.osm.DataSet;
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17 | import org.openstreetmap.josm.data.osm.DataSource;
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18 | import org.openstreetmap.josm.data.osm.INode;
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19 | import org.openstreetmap.josm.data.osm.IPrimitive;
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20 | import org.openstreetmap.josm.data.osm.IRelation;
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21 | import org.openstreetmap.josm.data.osm.IWay;
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22 | import org.openstreetmap.josm.data.osm.Node;
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23 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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24 | import org.openstreetmap.josm.data.osm.Relation;
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25 | import org.openstreetmap.josm.data.osm.Tagged;
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26 | import org.openstreetmap.josm.data.osm.Way;
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27 | import org.openstreetmap.josm.data.osm.visitor.PrimitiveVisitor;
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28 | import org.openstreetmap.josm.gui.layer.OsmDataLayer;
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29 | import org.openstreetmap.josm.tools.DateUtils;
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30 |
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31 | /**
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32 | * Save the dataset into a stream as osm intern xml format. This is not using any
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33 | * xml library for storing.
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34 | * @author imi
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35 | */
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36 | public class OsmWriter extends XmlWriter implements PrimitiveVisitor {
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37 |
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38 | public static final String DEFAULT_API_VERSION = "0.6";
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39 |
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40 | private boolean osmConform;
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41 | private boolean withBody = true;
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42 | private String version;
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43 | private Changeset changeset;
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44 |
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45 | /**
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46 | * Do not call this directly. Use OsmWriterFactory instead.
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47 | */
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48 | protected OsmWriter(PrintWriter out, boolean osmConform, String version) {
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49 | super(out);
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50 | this.osmConform = osmConform;
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51 | this.version = (version == null ? DEFAULT_API_VERSION : version);
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52 | }
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53 |
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54 | public void setWithBody(boolean wb) {
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55 | this.withBody = wb;
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56 | }
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57 | public void setChangeset(Changeset cs) {
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58 | this.changeset = cs;
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59 | }
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60 | public void setVersion(String v) {
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61 | this.version = v;
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62 | }
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63 |
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64 | public void header() {
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65 | header(null);
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66 | }
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67 | public void header(Boolean upload) {
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68 | out.println("<?xml version='1.0' encoding='UTF-8'?>");
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69 | out.print("<osm version='");
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70 | out.print(version);
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71 | if (upload != null) {
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72 | out.print("' upload='");
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73 | out.print(upload);
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74 | }
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75 | out.println("' generator='JOSM'>");
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76 | }
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77 | public void footer() {
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78 | out.println("</osm>");
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79 | }
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80 |
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81 | protected static final Comparator<OsmPrimitive> byIdComparator = new Comparator<OsmPrimitive>() {
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82 | @Override public int compare(OsmPrimitive o1, OsmPrimitive o2) {
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83 | return (o1.getUniqueId()<o2.getUniqueId() ? -1 : (o1.getUniqueId()==o2.getUniqueId() ? 0 : 1));
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84 | }
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85 | };
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86 |
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87 | protected Collection<OsmPrimitive> sortById(Collection<? extends OsmPrimitive> primitives) {
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88 | List<OsmPrimitive> result = new ArrayList<OsmPrimitive>(primitives.size());
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89 | result.addAll(primitives);
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90 | Collections.sort(result, byIdComparator);
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91 | return result;
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92 | }
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93 |
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94 | public void writeLayer(OsmDataLayer layer) {
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95 | header(!layer.isUploadDiscouraged());
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96 | writeDataSources(layer.data);
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97 | writeContent(layer.data);
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98 | footer();
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99 | }
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100 |
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101 | public void writeContent(DataSet ds) {
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102 | for (OsmPrimitive n : sortById(ds.getNodes())) {
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103 | if (shouldWrite(n)) {
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104 | visit((Node)n);
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105 | }
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106 | }
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107 | for (OsmPrimitive w : sortById(ds.getWays())) {
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108 | if (shouldWrite(w)) {
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109 | visit((Way)w);
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110 | }
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111 | }
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112 | for (OsmPrimitive e: sortById(ds.getRelations())) {
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113 | if (shouldWrite(e)) {
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114 | visit((Relation)e);
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115 | }
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116 | }
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117 | }
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118 |
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119 | protected boolean shouldWrite(OsmPrimitive osm) {
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120 | return !osm.isNewOrUndeleted() || !osm.isDeleted();
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121 | }
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122 |
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123 | public void writeDataSources(DataSet ds) {
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124 | for (DataSource s : ds.dataSources) {
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125 | out.println(" <bounds minlat='"
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126 | + s.bounds.getMin().lat()+"' minlon='"
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127 | + s.bounds.getMin().lon()+"' maxlat='"
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128 | + s.bounds.getMax().lat()+"' maxlon='"
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129 | + s.bounds.getMax().lon()
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130 | +"' origin='"+XmlWriter.encode(s.origin)+"' />");
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131 | }
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132 | }
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133 |
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134 | @Override
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135 | public void visit(INode n) {
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136 | if (n.isIncomplete()) return;
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137 | addCommon(n, "node");
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138 | out.print(" lat='"+n.getCoor().lat()+"' lon='"+n.getCoor().lon()+"'");
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139 | if (!withBody) {
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140 | out.println("/>");
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141 | } else {
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142 | addTags(n, "node", true);
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143 | }
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144 | }
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145 |
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146 | @Override
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147 | public void visit(IWay w) {
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148 | if (w.isIncomplete()) return;
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149 | addCommon(w, "way");
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150 | if (!withBody) {
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151 | out.println("/>");
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152 | } else {
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153 | out.println(">");
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154 | for (int i=0; i<w.getNodesCount(); ++i) {
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155 | out.println(" <nd ref='"+w.getNodeId(i) +"' />");
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156 | }
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157 | addTags(w, "way", false);
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158 | }
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159 | }
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160 |
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161 | @Override
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162 | public void visit(IRelation e) {
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163 | if (e.isIncomplete()) return;
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164 | addCommon(e, "relation");
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165 | if (!withBody) {
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166 | out.println("/>");
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167 | } else {
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168 | out.println(">");
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169 | for (int i=0; i<e.getMembersCount(); ++i) {
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170 | out.print(" <member type='");
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171 | out.print(e.getMemberType(i).getAPIName());
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172 | out.println("' ref='"+e.getMemberId(i)+"' role='" +
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173 | XmlWriter.encode(e.getRole(i)) + "' />");
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174 | }
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175 | addTags(e, "relation", false);
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176 | }
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177 | }
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178 |
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179 | public void visit(Changeset cs) {
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180 | out.print(" <changeset ");
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181 | out.print(" id='"+cs.getId()+"'");
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182 | if (cs.getUser() != null) {
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183 | out.print(" user='"+cs.getUser().getName() +"'");
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184 | out.print(" uid='"+cs.getUser().getId() +"'");
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185 | }
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186 | if (cs.getCreatedAt() != null) {
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187 | out.print(" created_at='"+DateUtils.fromDate(cs.getCreatedAt()) +"'");
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188 | }
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189 | if (cs.getClosedAt() != null) {
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190 | out.print(" closed_at='"+DateUtils.fromDate(cs.getClosedAt()) +"'");
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191 | }
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192 | out.print(" open='"+ (cs.isOpen() ? "true" : "false") +"'");
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193 | if (cs.getMin() != null) {
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194 | out.print(" min_lon='"+ cs.getMin().lonToString(CoordinateFormat.DECIMAL_DEGREES) +"'");
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195 | out.print(" min_lat='"+ cs.getMin().latToString(CoordinateFormat.DECIMAL_DEGREES) +"'");
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196 | }
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197 | if (cs.getMax() != null) {
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198 | out.print(" max_lon='"+ cs.getMin().lonToString(CoordinateFormat.DECIMAL_DEGREES) +"'");
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199 | out.print(" max_lat='"+ cs.getMin().latToString(CoordinateFormat.DECIMAL_DEGREES) +"'");
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200 | }
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201 | out.println(">");
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202 | addTags(cs, "changeset", false); // also writes closing </changeset>
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203 | }
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204 |
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205 | protected static final Comparator<Entry<String, String>> byKeyComparator = new Comparator<Entry<String,String>>() {
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206 | @Override public int compare(Entry<String, String> o1, Entry<String, String> o2) {
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207 | return o1.getKey().compareTo(o2.getKey());
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208 | }
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209 | };
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210 |
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211 | protected void addTags(Tagged osm, String tagname, boolean tagOpen) {
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212 | if (osm.hasKeys()) {
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213 | if (tagOpen) {
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214 | out.println(">");
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215 | }
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216 | List<Entry<String, String>> entries = new ArrayList<Entry<String,String>>(osm.getKeys().entrySet());
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217 | Collections.sort(entries, byKeyComparator);
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218 | for (Entry<String, String> e : entries) {
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219 | if ((osm instanceof Changeset) || !("created_by".equals(e.getKey()))) {
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220 | out.println(" <tag k='"+ XmlWriter.encode(e.getKey()) +
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221 | "' v='"+XmlWriter.encode(e.getValue())+ "' />");
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222 | }
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223 | }
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224 | out.println(" </" + tagname + ">");
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225 | } else if (tagOpen) {
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226 | out.println(" />");
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227 | } else {
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228 | out.println(" </" + tagname + ">");
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229 | }
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230 | }
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231 |
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232 | /**
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233 | * Add the common part as the form of the tag as well as the XML attributes
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234 | * id, action, user, and visible.
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235 | */
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236 | protected void addCommon(IPrimitive osm, String tagname) {
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237 | out.print(" <"+tagname);
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238 | if (osm.getUniqueId() != 0) {
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239 | out.print(" id='"+ osm.getUniqueId()+"'");
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240 | } else
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241 | throw new IllegalStateException(tr("Unexpected id 0 for osm primitive found"));
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242 | if (!osmConform) {
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243 | String action = null;
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244 | if (osm.isDeleted()) {
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245 | action = "delete";
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246 | } else if (osm.isModified()) {
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247 | action = "modify";
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248 | }
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249 | if (action != null) {
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250 | out.print(" action='"+action+"'");
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251 | }
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252 | }
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253 | if (!osm.isTimestampEmpty()) {
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254 | out.print(" timestamp='"+DateUtils.fromDate(osm.getTimestamp())+"'");
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255 | }
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256 | // user and visible added with 0.4 API
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257 | if (osm.getUser() != null) {
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258 | if(osm.getUser().isLocalUser()) {
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259 | out.print(" user='"+XmlWriter.encode(osm.getUser().getName())+"'");
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260 | } else if (osm.getUser().isOsmUser()) {
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261 | // uid added with 0.6
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262 | out.print(" uid='"+ osm.getUser().getId()+"'");
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263 | out.print(" user='"+XmlWriter.encode(osm.getUser().getName())+"'");
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264 | }
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265 | }
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266 | out.print(" visible='"+osm.isVisible()+"'");
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267 | if (osm.getVersion() != 0) {
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268 | out.print(" version='"+osm.getVersion()+"'");
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269 | }
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270 | if (this.changeset != null && this.changeset.getId() != 0) {
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271 | out.print(" changeset='"+this.changeset.getId()+"'" );
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272 | } else if (osm.getChangesetId() > 0 && !osm.isNew()) {
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273 | out.print(" changeset='"+osm.getChangesetId()+"'" );
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274 | }
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275 | }
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276 |
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277 | public void close() {
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278 | out.close();
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279 | }
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280 |
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281 | @Override
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282 | public void flush() {
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283 | out.flush();
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284 | }
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285 | }
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