Adds support to metadata on waypoints from a GPX file.

lib/adapters/GPX.class.php

@@ -37,23 +37,23 @@ public function write(Geometry $geometry, $namespace = FALSE) {
     if ($geometry->isEmpty()) return NULL;
     if ($namespace) {
       $this->namespace = $namespace;
-      $this->nss = $namespace.':';    
+      $this->nss = $namespace.':';
     }
     return '<'.$this->nss.'gpx creator="geoPHP" version="1.0">'.$this->geometryToGPX($geometry).'</'.$this->nss.'gpx>';
   }
-  
+
   public function geomFromText($text) {
     // Change to lower-case and strip all CDATA
     $text = strtolower($text);
     $text = preg_replace('/<!\[cdata\[(.*?)\]\]>/s','',$text);
-    
+
     // Load into DOMDocument
     $xmlobj = new DOMDocument();
     @$xmlobj->loadXML($text);
     if ($xmlobj === false) {
       throw new Exception("Invalid GPX: ". $text);
     }
-    
+
     $this->xmlobj = $xmlobj;
     try {
       $geom = $this->geomFromXML();
@@ -65,20 +65,28 @@ public function geomFromText($text) {
 
     return $geom;
   }
-  
+
   protected function geomFromXML() {
     $geometries = array();
     $geometries = array_merge($geometries, $this->parseWaypoints());
     $geometries = array_merge($geometries, $this->parseTracks());
     $geometries = array_merge($geometries, $this->parseRoutes());
-    
+
     if (empty($geometries)) {
       throw new Exception("Invalid / Empty GPX");
     }
-    
-    return geoPHP::geometryReduce($geometries); 
+
+    return geoPHP::geometryReduce($geometries);
   }
-
+
+  protected function getElementMetadata($element) {
+      $metadata = array();
+      foreach ($element->childNodes as $child) {
+          $metadata[$child->nodeName] = $child->nodeValue;
+      }
+      return $metadata;
+  }
+
   protected function childElements($xml, $nodename = '') {
     $children = array();
     foreach ($xml->childNodes as $child) {
@@ -88,18 +96,19 @@ protected function childElements($xml, $nodename = '') {
     }
     return $children;
   }
-  
+
   protected function parseWaypoints() {
     $points = array();
     $wpt_elements = $this->xmlobj->getElementsByTagName('wpt');
     foreach ($wpt_elements as $wpt) {
       $lat = $wpt->attributes->getNamedItem("lat")->nodeValue;
       $lon = $wpt->attributes->getNamedItem("lon")->nodeValue;
-      $points[] = new Point($lon, $lat);
+      $metadata = $this->getElementMetadata($wpt);
+      $points[] = new Point($lon, $lat, null, $metadata);
     }
     return $points;
   }
-  
+
   protected function parseTracks() {
     $lines = array();
     $trk_elements = $this->xmlobj->getElementsByTagName('trk');
@@ -116,7 +125,7 @@ protected function parseTracks() {
     }
     return $lines;
   }
-  
+
   protected function parseRoutes() {
     $lines = array();
     $rte_elements = $this->xmlobj->getElementsByTagName('rte');
@@ -131,7 +140,7 @@ protected function parseRoutes() {
     }
     return $lines;
   }
-  
+
   protected function geometryToGPX($geom) {
     $type = strtolower($geom->getGeomType());
     switch ($type) {
@@ -150,30 +159,30 @@ protected function geometryToGPX($geom) {
         break;
     }
   }
-  
+
   private function pointToGPX($geom) {
     return '<'.$this->nss.'wpt lat="'.$geom->getY().'" lon="'.$geom->getX().'" />';
   }
-  
+
   private function linestringToGPX($geom) {
     $gpx = '<'.$this->nss.'trk><'.$this->nss.'trkseg>';
-    
+
     foreach ($geom->getComponents() as $comp) {
       $gpx .= '<'.$this->nss.'trkpt lat="'.$comp->getY().'" lon="'.$comp->getX().'" />';
     }
-    
+
     $gpx .= '</'.$this->nss.'trkseg></'.$this->nss.'trk>';
-    
+
     return $gpx;
   }
-  
+
   public function collectionToGPX($geom) {
     $gpx = '';
     $components = $geom->getComponents();
     foreach ($geom->getComponents() as $comp) {
       $gpx .= $this->geometryToGPX($comp);
     }
-    
+
     return $gpx;
   }
 

lib/geometry/Point.class.php

@@ -17,7 +17,7 @@ class Point extends Geometry
    * @param numeric $y The y coordinate (or latitude)
    * @param numeric $z The z coordinate (or altitude) - optional
    */
-  public function __construct($x, $y, $z = NULL) {
+  public function __construct($x, $y, $z = NULL, $metadata = array()) {
     // Basic validation on x and y
     if (!is_numeric($x) || !is_numeric($y)) {
       throw new Exception("Cannot construct Point. x and y should be numeric");
@@ -43,6 +43,7 @@ public function __construct($x, $y, $z = NULL) {
     if ($this->dimention == 3) {
       $this->coords = array($x, $y, $z);
     }
+    $this->metadata = $metadata;
   }
 
   /**
@@ -152,4 +153,3 @@ public function interiorRingN($n)  { return NULL; }
   public function pointOnSurface()   { return NULL; }
   public function explode()          { return NULL; }
 }
-