1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.data.imagery;
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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.text.DecimalFormat;
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7 | import java.text.DecimalFormatSymbols;
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8 | import java.text.NumberFormat;
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9 | import java.util.Arrays;
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10 | import java.util.Locale;
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11 | import java.util.Map;
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12 | import java.util.Set;
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13 | import java.util.TreeSet;
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14 | import java.util.concurrent.ConcurrentHashMap;
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15 | import java.util.regex.Matcher;
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16 | import java.util.regex.Pattern;
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17 |
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18 | import org.openstreetmap.gui.jmapviewer.interfaces.TemplatedTileSource;
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19 | import org.openstreetmap.josm.data.coor.EastNorth;
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20 | import org.openstreetmap.josm.data.projection.Projection;
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21 | import org.openstreetmap.josm.data.projection.ProjectionRegistry;
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22 | import org.openstreetmap.josm.gui.layer.WMSLayer;
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23 | import org.openstreetmap.josm.tools.CheckParameterUtil;
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24 | import org.openstreetmap.josm.tools.Utils;
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25 |
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26 | /**
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27 | * Tile Source handling WMS providers
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28 | *
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29 | * @author Wiktor Niesiobędzki
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30 | * @since 8526
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31 | */
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32 | public class TemplatedWMSTileSource extends AbstractWMSTileSource implements TemplatedTileSource {
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33 | // CHECKSTYLE.OFF: SingleSpaceSeparator
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34 | private static final Pattern PATTERN_HEADER = Pattern.compile("\\{header\\(([^,]+),([^}]+)\\)\\}");
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35 | private static final Pattern PATTERN_PROJ = Pattern.compile("\\{proj\\}");
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36 | private static final Pattern PATTERN_WKID = Pattern.compile("\\{wkid\\}");
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37 | private static final Pattern PATTERN_BBOX = Pattern.compile("\\{bbox\\}");
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38 | private static final Pattern PATTERN_W = Pattern.compile("\\{w\\}");
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39 | private static final Pattern PATTERN_S = Pattern.compile("\\{s\\}");
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40 | private static final Pattern PATTERN_E = Pattern.compile("\\{e\\}");
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41 | private static final Pattern PATTERN_N = Pattern.compile("\\{n\\}");
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42 | private static final Pattern PATTERN_WIDTH = Pattern.compile("\\{width\\}");
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43 | private static final Pattern PATTERN_HEIGHT = Pattern.compile("\\{height\\}");
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44 | private static final Pattern PATTERN_TIME = Pattern.compile("\\{time\\}"); // Sentinel-2
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45 | private static final Pattern PATTERN_PARAM = Pattern.compile("\\{([^}]+)\\}");
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46 | // CHECKSTYLE.ON: SingleSpaceSeparator
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47 |
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48 | private static final NumberFormat LATLON_FORMAT = new DecimalFormat("###0.0000000", new DecimalFormatSymbols(Locale.US));
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49 |
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50 | private static final Pattern[] ALL_PATTERNS = {
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51 | PATTERN_HEADER, PATTERN_PROJ, PATTERN_WKID, PATTERN_BBOX,
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52 | PATTERN_W, PATTERN_S, PATTERN_E, PATTERN_N,
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53 | PATTERN_WIDTH, PATTERN_HEIGHT, PATTERN_TIME,
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54 | };
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55 |
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56 | private final Set<String> serverProjections;
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57 | private final Map<String, String> headers = new ConcurrentHashMap<>();
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58 | private final String date;
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59 | private final boolean switchLatLon;
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60 |
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61 | /**
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62 | * Creates a tile source based on imagery info
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63 | * @param info imagery info
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64 | * @param tileProjection the tile projection
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65 | */
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66 | public TemplatedWMSTileSource(ImageryInfo info, Projection tileProjection) {
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67 | super(info, tileProjection);
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68 | this.serverProjections = new TreeSet<>(info.getServerProjections());
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69 | this.headers.putAll(info.getCustomHttpHeaders());
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70 | this.date = info.getDate();
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71 | handleTemplate();
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72 | initProjection();
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73 | // Bounding box coordinates have to be switched for WMS 1.3.0 EPSG:4326.
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74 | //
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75 | // Background:
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76 | //
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77 | // bbox=x_min,y_min,x_max,y_max
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78 | //
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79 | // SRS=... is WMS 1.1.1
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80 | // CRS=... is WMS 1.3.0
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81 | //
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82 | // The difference:
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83 | // For SRS x is east-west and y is north-south
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84 | // For CRS x and y are as specified by the EPSG
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85 | // E.g. [1] lists lat as first coordinate axis and lot as second, so it is switched for EPSG:4326.
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86 | // For most other EPSG code there seems to be no difference.
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87 | // CHECKSTYLE.OFF: LineLength
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88 | // [1] https://www.epsg-registry.org/report.htm?type=selection&entity=urn:ogc:def:crs:EPSG::4326&reportDetail=short&style=urn:uuid:report-style:default-with-code&style_name=OGP%20Default%20With%20Code&title=EPSG:4326
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89 | // CHECKSTYLE.ON: LineLength
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90 | if (baseUrl.toLowerCase(Locale.US).contains("crs=epsg:4326")) {
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91 | switchLatLon = true;
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92 | } else if (baseUrl.toLowerCase(Locale.US).contains("crs=")) {
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93 | // assume WMS 1.3.0
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94 | switchLatLon = ProjectionRegistry.getProjection().switchXY();
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95 | } else {
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96 | switchLatLon = false;
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97 | }
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98 | }
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99 |
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100 | @Override
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101 | public int getDefaultTileSize() {
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102 | return WMSLayer.PROP_IMAGE_SIZE.get();
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103 | }
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104 |
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105 | @Override
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106 | public String getTileUrl(int zoom, int tilex, int tiley) {
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107 | String myProjCode = getServerCRS();
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108 |
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109 | EastNorth nw = getTileEastNorth(tilex, tiley, zoom);
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110 | EastNorth se = getTileEastNorth(tilex + 1, tiley + 1, zoom);
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111 |
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112 | double w = nw.getX();
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113 | double n = nw.getY();
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114 |
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115 | double s = se.getY();
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116 | double e = se.getX();
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117 |
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118 | if ("EPSG:4326".equals(myProjCode) && !serverProjections.contains(myProjCode) && serverProjections.contains("CRS:84")) {
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119 | myProjCode = "CRS:84";
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120 | }
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121 |
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122 | // Using StringBuffer and generic PATTERN_PARAM matcher gives 2x performance improvement over replaceAll
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123 | StringBuffer url = new StringBuffer(baseUrl.length());
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124 | Matcher matcher = PATTERN_PARAM.matcher(baseUrl);
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125 | while (matcher.find()) {
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126 | String replacement;
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127 | switch (matcher.group(1)) {
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128 | case "proj":
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129 | replacement = myProjCode;
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130 | break;
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131 | case "wkid":
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132 | replacement = myProjCode.startsWith("EPSG:") ? myProjCode.substring(5) : myProjCode;
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133 | break;
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134 | case "bbox":
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135 | replacement = getBbox(zoom, tilex, tiley, switchLatLon);
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136 | break;
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137 | case "w":
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138 | replacement = LATLON_FORMAT.format(w);
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139 | break;
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140 | case "s":
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141 | replacement = LATLON_FORMAT.format(s);
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142 | break;
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143 | case "e":
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144 | replacement = LATLON_FORMAT.format(e);
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145 | break;
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146 | case "n":
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147 | replacement = LATLON_FORMAT.format(n);
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148 | break;
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149 | case "width":
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150 | case "height":
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151 | replacement = String.valueOf(getTileSize());
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152 | break;
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153 | case "time":
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154 | replacement = Utils.encodeUrl(date);
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155 | break;
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156 | default:
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157 | replacement = '{' + matcher.group(1) + '}';
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158 | }
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159 | matcher.appendReplacement(url, replacement);
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160 | }
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161 | matcher.appendTail(url);
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162 | return url.toString().replace(" ", "%20");
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163 | }
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164 |
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165 | @Override
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166 | public String getTileId(int zoom, int tilex, int tiley) {
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167 | return getTileUrl(zoom, tilex, tiley);
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168 | }
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169 |
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170 | @Override
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171 | public Map<String, String> getHeaders() {
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172 | return headers;
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173 | }
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174 |
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175 | /**
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176 | * Checks if url is acceptable by this Tile Source
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177 | * @param url URL to check
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178 | */
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179 | public static void checkUrl(String url) {
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180 | CheckParameterUtil.ensureParameterNotNull(url, "url");
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181 | Matcher m = PATTERN_PARAM.matcher(url);
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182 | while (m.find()) {
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183 | boolean isSupportedPattern = Arrays.stream(ALL_PATTERNS)
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184 | .anyMatch(pattern -> pattern.matcher(m.group()).matches());
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185 | if (!isSupportedPattern) {
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186 | throw new IllegalArgumentException(
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187 | tr("{0} is not a valid WMS argument. Please check this server URL:\n{1}", m.group(), url));
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188 | }
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189 | }
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190 | }
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191 |
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192 | private void handleTemplate() {
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193 | // Capturing group pattern on switch values
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194 | StringBuffer output = new StringBuffer();
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195 | Matcher matcher = PATTERN_HEADER.matcher(this.baseUrl);
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196 | while (matcher.find()) {
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197 | headers.put(matcher.group(1), matcher.group(2));
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198 | matcher.appendReplacement(output, "");
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199 | }
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200 | matcher.appendTail(output);
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201 | this.baseUrl = output.toString();
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202 | }
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203 | }
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