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<?php
namespace Maps\Presentation;
use Maps\Elements\Location;
/**
* @licence GNU GPL v2+
* @author Jeroen De Dauw < [email protected] >
*/
class KmlFormatter {
* Builds and returns KML representing the set geographical objects.
public function formatLocationsAsKml( Location ...$locations ): string {
$elements = $this->getKmlForLocations( $locations );
// http://earth.google.com/kml/2.2
return <<<EOT
<?xml version="1.0" encoding="UTF-8"?>
<kml xmlns="http://www.opengis.net/kml/2.2">
<Document>
$elements
</Document>
</kml>
EOT;
}
private function getKmlForLocations( array $locations ): string {
return implode(
"\n",
array_map(
function( Location $location ) {
return $this->locationToKmlPlacemark( $location );
},
$locations
)
);
private function locationToKmlPlacemark( Location $location ): string {
// TODO: escaping?
$name = '<name><![CDATA[ ' . $location->getTitle() . ']]></name>';
$description = '<description><![CDATA[ ' . $location->getText() . ']]></description>';
$coordinates = '<coordinates>'
. $this->escapeValue( $this->getCoordinateString( $location ) )
. '</coordinates>';
<Placemark>
$name
$description
<Point>
$coordinates
</Point>
</Placemark>
private function getCoordinateString( Location $location ): string {
// lon,lat[,alt]
return $location->getCoordinates()->getLongitude()
. ',' . $location->getCoordinates()->getLatitude()
. ',0';
private function escapeValue( string $value ): string {
return htmlspecialchars( $value, ENT_NOQUOTES );
JeroenDeDauw /
Maps
