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.BufferedWriter;
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7 | import java.io.OutputStream;
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8 | import java.io.OutputStreamWriter;
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9 | import java.io.PrintWriter;
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10 | import java.io.UnsupportedEncodingException;
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11 | import java.util.Collection;
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12 | import java.util.Map;
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13 |
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14 | import org.openstreetmap.josm.data.Bounds;
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15 | import org.openstreetmap.josm.data.coor.LatLon;
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16 | import org.openstreetmap.josm.data.gpx.GpxData;
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17 | import org.openstreetmap.josm.data.gpx.GpxLink;
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18 | import org.openstreetmap.josm.data.gpx.GpxRoute;
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19 | import org.openstreetmap.josm.data.gpx.GpxTrack;
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20 | import org.openstreetmap.josm.data.gpx.WayPoint;
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21 |
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22 | /**
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23 | * Writes GPX files from GPX data or OSM data.
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24 | */
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25 | public class GpxWriter extends XmlWriter {
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26 |
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27 | public GpxWriter(PrintWriter out) {
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28 | super(out);
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29 | }
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30 |
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31 | public GpxWriter(OutputStream out) throws UnsupportedEncodingException {
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32 | super(new PrintWriter(new BufferedWriter(new OutputStreamWriter(out, "UTF-8"))));
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33 | }
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34 |
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35 | public GpxWriter() {
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36 | super(null);
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37 | //sorry for this one here, this will be cleaned up once the new scheme works
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38 | }
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39 |
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40 | private GpxData data;
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41 | private String indent = "";
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42 |
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43 | private final static int WAY_POINT = 0;
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44 | private final static int ROUTE_POINT = 1;
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45 | private final static int TRACK_POINT = 2;
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46 |
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47 | public void write(GpxData data) {
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48 | this.data = data;
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49 | out.println("<?xml version='1.0' encoding='UTF-8'?>");
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50 | out.println("<gpx version=\"1.1\" creator=\"JOSM GPX export\" xmlns=\"http://www.topografix.com/GPX/1/1\"\n" +
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51 | " xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" \n" +
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52 | " xsi:schemaLocation=\"http://www.topografix.com/GPX/1/1 http://www.topografix.com/GPX/1/1/gpx.xsd\">");
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53 | indent = " ";
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54 | writeMetaData();
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55 | writeWayPoints();
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56 | writeRoutes();
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57 | writeTracks();
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58 | out.print("</gpx>");
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59 | out.flush();
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60 | }
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61 |
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62 | @SuppressWarnings("unchecked")
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63 | private void writeAttr(Map<String, Object> attr) {
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64 | // FIXME this loop is evil, because it does not assure the
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65 | // correct element order specified by the xml schema.
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66 | // for now it works, but future extension could get very complex and unmaintainable
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67 | for (Map.Entry<String, Object> ent : attr.entrySet()) {
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68 | String k = ent.getKey();
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69 | if (k.equals(GpxData.META_LINKS)) {
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70 | for (GpxLink link : (Collection<GpxLink>) ent.getValue()) {
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71 | gpxLink(link);
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72 | }
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73 | } else {
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74 | simpleTag(k, ent.getValue().toString());
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75 | }
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76 | }
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77 | }
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78 |
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79 | @SuppressWarnings("unchecked")
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80 | private void writeMetaData() {
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81 | Map<String, Object> attr = data.attr;
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82 | openln("metadata");
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83 |
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84 | // write the description
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85 | if (attr.containsKey(GpxData.META_DESC)) {
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86 | simpleTag("desc", (String)attr.get(GpxData.META_DESC));
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87 | }
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88 |
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89 | // write the author details
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90 | if (attr.containsKey(GpxData.META_AUTHOR_NAME)
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91 | || attr.containsKey(GpxData.META_AUTHOR_EMAIL)) {
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92 | openln("author");
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93 | // write the name
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94 | simpleTag("name", (String) attr.get(GpxData.META_AUTHOR_NAME));
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95 | // write the email address
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96 | if(attr.containsKey(GpxData.META_AUTHOR_EMAIL)) {
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97 | String[] tmp = ((String)attr.get(GpxData.META_AUTHOR_EMAIL)).split("@");
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98 | if(tmp.length == 2) {
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99 | inline("email", "id=\"" + tmp[0] + "\" domain=\""+tmp[1]+"\"");
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100 | }
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101 | }
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102 | // write the author link
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103 | gpxLink((GpxLink) attr.get(GpxData.META_AUTHOR_LINK));
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104 | closeln("author");
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105 | }
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106 |
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107 | // write the copyright details
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108 | if(attr.containsKey(GpxData.META_COPYRIGHT_LICENSE)
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109 | || attr.containsKey(GpxData.META_COPYRIGHT_YEAR)) {
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110 | openAtt("copyright", "author=\""+ attr.get(GpxData.META_COPYRIGHT_AUTHOR) +"\"");
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111 | if(attr.containsKey(GpxData.META_COPYRIGHT_YEAR)) {
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112 | simpleTag("year", (String) attr.get(GpxData.META_COPYRIGHT_YEAR));
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113 | }
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114 | if(attr.containsKey(GpxData.META_COPYRIGHT_LICENSE)) {
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115 | simpleTag("license", encode((String) attr.get(GpxData.META_COPYRIGHT_LICENSE)));
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116 | }
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117 | closeln("copyright");
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118 | }
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119 |
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120 | // write links
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121 | if(attr.containsKey(GpxData.META_LINKS)) {
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122 | for (GpxLink link : (Collection<GpxLink>) attr.get(GpxData.META_LINKS)) {
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123 | gpxLink(link);
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124 | }
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125 | }
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126 |
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127 | // write keywords
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128 | if (attr.containsKey(GpxData.META_KEYWORDS)) {
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129 | simpleTag("keywords", (String)attr.get(GpxData.META_KEYWORDS));
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130 | }
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131 |
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132 | Bounds bounds = data.recalculateBounds();
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133 | if(bounds != null)
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134 | {
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135 | String b = "minlat=\"" + bounds.getMin().lat() + "\" minlon=\"" + bounds.getMin().lon() +
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136 | "\" maxlat=\"" + bounds.getMax().lat() + "\" maxlon=\"" + bounds.getMax().lon() + "\"" ;
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137 | inline("bounds", b);
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138 | }
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139 |
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140 | closeln("metadata");
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141 | }
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142 |
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143 | private void writeWayPoints() {
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144 | for (WayPoint pnt : data.waypoints) {
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145 | wayPoint(pnt, WAY_POINT);
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146 | }
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147 | }
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148 |
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149 | private void writeRoutes() {
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150 | for (GpxRoute rte : data.routes) {
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151 | openln("rte");
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152 | writeAttr(rte.attr);
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153 | for (WayPoint pnt : rte.routePoints) {
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154 | wayPoint(pnt, ROUTE_POINT);
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155 | }
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156 | closeln("rte");
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157 | }
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158 | }
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159 |
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160 | private void writeTracks() {
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161 | for (GpxTrack trk : data.tracks) {
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162 | open("trk");
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163 | writeAttr(trk.attr);
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164 | for (Collection<WayPoint> seg : trk.trackSegs) {
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165 | openln("trkseg");
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166 | for (WayPoint pnt : seg) {
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167 | wayPoint(pnt, TRACK_POINT);
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168 | }
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169 | closeln("trkseg");
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170 | }
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171 | closeln("trk");
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172 | }
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173 | }
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174 |
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175 | private void openln(String tag) {
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176 | open(tag);
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177 | out.println();
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178 | }
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179 |
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180 | private void open(String tag) {
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181 | out.print(indent + "<" + tag + ">");
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182 | indent += " ";
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183 | }
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184 |
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185 | private void openAtt(String tag, String attributes) {
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186 | out.println(indent + "<" + tag + " " + attributes + ">");
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187 | indent += " ";
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188 | }
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189 |
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190 | private void inline(String tag, String attributes) {
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191 | out.println(indent + "<" + tag + " " + attributes + " />");
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192 | }
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193 |
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194 | private void close(String tag) {
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195 | indent = indent.substring(2);
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196 | out.print(indent + "</" + tag + ">");
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197 | }
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198 |
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199 | private void closeln(String tag) {
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200 | close(tag);
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201 | out.println();
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202 | }
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203 |
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204 | /**
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205 | * if content not null, open tag, write encoded content, and close tag
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206 | * else do nothing.
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207 | */
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208 | private void simpleTag(String tag, String content) {
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209 | if (content != null && content.length() > 0) {
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210 | open(tag);
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211 | out.print(encode(content));
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212 | out.println("</" + tag + ">");
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213 | indent = indent.substring(2);
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214 | }
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215 | }
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216 |
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217 | /**
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218 | * output link
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219 | */
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220 | private void gpxLink(GpxLink link) {
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221 | if (link != null) {
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222 | openAtt("link", "href=\"" + link.uri + "\"");
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223 | simpleTag("text", link.text);
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224 | simpleTag("type", link.type);
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225 | closeln("link");
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226 | }
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227 | }
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228 |
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229 | /**
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230 | * output a point
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231 | */
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232 | private void wayPoint(WayPoint pnt, int mode) {
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233 | String type;
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234 | switch(mode) {
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235 | case WAY_POINT:
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236 | type = "wpt";
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237 | break;
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238 | case ROUTE_POINT:
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239 | type = "rtept";
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240 | break;
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241 | case TRACK_POINT:
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242 | type = "trkpt";
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243 | break;
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244 | default:
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245 | throw new RuntimeException(tr("Unknown mode {0}.", mode));
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246 | }
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247 | if (pnt != null) {
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248 | LatLon c = pnt.getCoor();
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249 | openAtt(type, "lat=\"" + c.lat() + "\" lon=\"" + c.lon() + "\"");
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250 | writeAttr(pnt.attr);
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251 | closeln(type);
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252 | }
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253 | }
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254 | }
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