Mercurial > dive4elements > river
annotate artifacts/src/main/java/org/dive4elements/river/artifacts/services/MapInfoService.java @ 9753:7227621f8496 3.2.x
Get rid of duplicate MapServer URL configurations
author | Tom Gottfried <tom@intevation.de> |
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date | Tue, 11 Oct 2022 14:02:20 +0200 |
parents | 0a5239a1e46e |
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rev | line source |
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River artifacts: Added new copyright headers.
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde |
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2 * Software engineering by Intevation GmbH |
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3 * |
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4 * This file is Free Software under the GNU AGPL (>=v3) |
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the |
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6 * documentation coming with Dive4Elements River for details. |
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7 */ |
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8 |
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9 package org.dive4elements.river.artifacts.services; |
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10 |
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11 import com.vividsolutions.jts.geom.Envelope; |
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12 |
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13 import org.dive4elements.artifactdatabase.XMLService; |
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14 import org.dive4elements.artifacts.CallMeta; |
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15 import org.dive4elements.artifacts.GlobalContext; |
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16 import org.dive4elements.artifacts.common.ArtifactNamespaceContext; |
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17 import org.dive4elements.artifacts.common.utils.Config; |
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18 import org.dive4elements.artifacts.common.utils.XMLUtils; |
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19 import org.dive4elements.artifacts.common.utils.XMLUtils.ElementCreator; |
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20 import org.dive4elements.river.utils.GeometryUtils; |
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21 import org.dive4elements.river.utils.RiverUtils; |
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22 |
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23 import java.util.HashMap; |
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24 import java.util.Map; |
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25 |
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26 import javax.xml.xpath.XPathConstants; |
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27 |
9726 | 28 import org.apache.logging.log4j.Logger; |
29 import org.apache.logging.log4j.LogManager; | |
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30 import org.w3c.dom.Document; |
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31 import org.w3c.dom.Element; |
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32 import org.w3c.dom.Node; |
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33 |
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34 /** |
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35 * This service provides information about the supported rivers by this |
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36 * application. |
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37 * |
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38 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> |
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39 */ |
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40 public class MapInfoService extends XMLService { |
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41 |
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42 private static final String MAPTYPE_FLOOD = "floodmap"; |
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43 private static final String MAPTYPE_RIVER = "rivermap"; |
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44 |
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45 /** XPath that points to the river.*/ |
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46 public static final String XPATH_RIVER = "/mapinfo/river/text()"; |
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47 |
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48 public static final String XPATH_MAPTYPE = "/mapinfo/maptype/text()"; |
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49 |
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50 private static final String XPATH_RIVER_PROJECTION = |
8856 | 51 "/artifact-database/*[local-name()=$maptype]/" |
52 + "river[@name=$river]/srid/@value"; | |
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53 |
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54 private static final String XPATH_RIVER_BACKGROUND = |
8856 | 55 "/artifact-database/*[local-name()=$maptype]/" |
56 + "river[@name=$river]/background-wms"; | |
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57 |
9726 | 58 private static Logger log = LogManager.getLogger(MapInfoService.class); |
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59 |
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60 |
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61 /** |
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62 * The default constructor. |
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63 */ |
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64 public MapInfoService() { |
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65 } |
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66 |
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67 protected static String getStringXPath( |
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68 String query, |
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69 Map<String, String> variables |
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70 ) { |
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71 return (String)XMLUtils.xpath( |
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72 Config.getConfig(), query, XPathConstants.STRING, |
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73 null, variables); |
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74 } |
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75 |
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76 protected static Node getNodeXPath( |
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77 String query, |
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78 Map<String, String> variables |
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79 ) { |
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80 return (Node)XMLUtils.xpath( |
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81 Config.getConfig(), query, XPathConstants.NODE, |
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82 null, variables); |
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83 } |
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84 |
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85 @Override |
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86 public Document processXML( |
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87 Document data, |
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88 GlobalContext globalContext, |
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89 CallMeta callMeta |
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90 ) { |
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91 log.debug("MapInfoService.process"); |
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92 |
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93 Document result = XMLUtils.newDocument(); |
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94 ElementCreator cr = new ElementCreator(result, null, null); |
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95 |
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96 Element mapinfo = cr.create("mapinfo"); |
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97 result.appendChild(mapinfo); |
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98 |
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99 String river = extractRiver(data); |
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100 if (river == null || river.length() == 0) { |
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101 log.warn("Cannot generate information: river is empty!"); |
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102 return result; |
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103 } |
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104 |
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105 String mapType = extractMaptype(data); |
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106 if (mapType == null |
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107 || !(mapType.equals(MAPTYPE_FLOOD) || mapType.equals(MAPTYPE_RIVER))) { |
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108 mapType = MAPTYPE_FLOOD; |
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109 } |
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110 |
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111 Element root = cr.create("river"); |
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112 cr.addAttr(root, "name", river); |
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113 mapinfo.appendChild(root); |
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114 |
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115 Envelope env = GeometryUtils.getRiverBoundary(river); |
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116 if (env != null) { |
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117 String bounds = GeometryUtils.jtsBoundsToOLBounds(env); |
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118 if (log.isDebugEnabled()) { |
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119 log.debug("River '" + river + "' bounds: " + bounds); |
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120 } |
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121 |
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122 Element bbox = cr.create("bbox"); |
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123 cr.addAttr(bbox, "value", bounds); |
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124 root.appendChild(bbox); |
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125 } |
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126 |
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127 Map<String, String> vars = new HashMap<String, String>(); |
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128 vars.put("maptype", mapType); |
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129 vars.put("river", river); |
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130 |
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131 String sridStr = getStringXPath(XPATH_RIVER_PROJECTION, vars); |
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132 |
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133 if (sridStr != null && sridStr.length() > 0) { |
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134 Element srid = cr.create("srid"); |
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135 cr.addAttr(srid, "value", sridStr); |
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136 root.appendChild(srid); |
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137 } |
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138 |
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139 if (log.isDebugEnabled()) { |
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140 log.debug("processXML: " + XMLUtils.toString(root)); |
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141 } |
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142 |
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143 Element bgWMS = (Element) getNodeXPath(XPATH_RIVER_BACKGROUND, vars); |
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144 root.appendChild( |
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145 createWMSElement("background-wms", |
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146 bgWMS.getAttribute("url"), |
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147 bgWMS.getAttribute("layers"), |
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148 cr)); |
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149 |
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150 root.appendChild( |
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151 createWMSElement("river-wms", |
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152 mapType == MAPTYPE_FLOOD |
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153 ? RiverUtils.getUserWMSUrl() |
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154 : RiverUtils.getRiverWMSUrl(), |
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155 river, |
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156 cr)); |
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157 |
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158 return result; |
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159 } |
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160 |
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161 |
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162 protected Element createWMSElement( |
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163 String elementName, |
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164 String url, |
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165 String layers, |
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166 ElementCreator cr) |
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167 { |
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168 Element el = cr.create(elementName); |
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169 |
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170 cr.addAttr(el, "url", url); |
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171 cr.addAttr(el, "layers", layers); |
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172 |
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173 return el; |
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174 } |
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175 |
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176 |
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177 private static String extractRiver(Document data) { |
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178 return XMLUtils.xpathString( |
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179 data, XPATH_RIVER, ArtifactNamespaceContext.INSTANCE); |
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180 } |
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181 |
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182 private static String extractMaptype(Document data) { |
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183 return XMLUtils.xpathString( |
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184 data, XPATH_MAPTYPE, ArtifactNamespaceContext.INSTANCE); |
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185 } |
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186 } |
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187 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |