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<?php |
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namespace Ballen\Cartographer\Core; |
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/** |
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* Cartographer |
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* |
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* Cartographer is a PHP library providing the ability to programmatically |
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* generate GeoJSON objects. |
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* |
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* @author Bobby Allen <[email protected]> |
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* @license http://www.gnu.org/licenses/gpl-3.0.html |
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* @link https://github.com/allebb/cartographer |
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* @link http://bobbyallen.me |
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* |
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*/ |
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abstract class GeoJSON implements GeoJSONTypeInterface |
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{ |
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/** |
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* Supported GeoJSON types. |
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*/ |
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const TYPE_POINT = "Point"; |
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const TYPE_MULTIPOINT = "MultiPoint"; |
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const TYPE_LINESTRING = "LineString"; |
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const TYPE_MULTILINESTRING = "MultiLineString"; |
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const TYPE_POLYGON = "Polygon"; |
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const TYPE_MULTIPOLYGON = "MultiPolygon"; |
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const TYPE_GEOMETRYCOLLECTION = "GeometryCollection"; |
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const TYPE_FEATURE = "Feature"; |
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const TYPE_FEATURECOLLECTION = "FeatureCollection"; |
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/** |
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* The GeoJSON Object Type |
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* @var string |
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*/ |
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protected $type; |
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/** |
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* Generates the GeoJSON object. |
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* @return string |
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*/ |
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public function generate() |
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{ |
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$this->validateSchema(); |
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return $this->buildJson(); |
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} |
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/** |
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* Generate a GeometryCollection member GeoJSON object. |
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* @return array |
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*/ |
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public function generateMember() |
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{ |
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return array_merge(['type' => $this->type], $this->export()); |
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} |
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/** |
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* Validates the GeoJSON schema. |
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* @throws InvalidObjectTypeException |
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*/ |
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private function validateSchema() |
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{ |
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$typeConstants = (new \ReflectionClass(__CLASS__))->getConstants(); |
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if (!in_array($this->type, $typeConstants)) { |
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throw new \Ballen\Cartographer\Exceptions\InvalidObjectTypeException(sprintf('The GeoJSON object type specified (%s) is not supported.', $this->type)); |
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} |
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if (!$this->validate()) { |
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throw new \Ballen\Cartographer\Exceptions\TypeSchemaValidationException('The GeoJSON type object failed to validate.'); |
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} |
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} |
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/** |
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* Constructs the JSON object. |
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* @param boolean $pretty Enable "pretty" JSON outputting |
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* @return string |
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*/ |
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private function buildJson($pretty = false) |
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{ |
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$data = array_merge(['type' => $this->type], $this->export()); |
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if ($pretty) { |
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return json_encode($data, JSON_PRETTY_PRINT); |
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} |
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return json_encode($data); |
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} |
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} |
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allebb /
cartographer
