GeoJSON::read() - Code Metrics - swen100/geoPHP - Measure and Improve Code Quality continuously with Scrutinizer

GeoJSON::read() A
last analyzed 2022-08-18 15:20 UTC

↳ Parent: GeoJSON

Complexity

Conditions	4
Paths	3

Size

Total Lines	14
Code Lines	6

Duplication

Lines	0
Ratio	0 %

Importance

Changes	2
Bugs	0	Features	0

Metric	Value
eloc	6
c	2
b	0
f	0
dl	0
loc	14
rs	10
cc	4
nc	3
nop	1

<?php
namespace geoPHP\Adapter;

use geoPHP\geoPHP;
use geoPHP\Geometry\Geometry;
use geoPHP\Geometry\GeometryCollection;
use geoPHP\Geometry\Point;
use geoPHP\Geometry\MultiPoint;
use geoPHP\Geometry\LineString;
use geoPHP\Geometry\MultiLineString;
use geoPHP\Geometry\Polygon;
use geoPHP\Geometry\MultiPolygon;

/**
 * GeoJSON class : a geoJSON reader/writer.
 *
 * Note that it will always return a GeoJSON geometry. This
 * means that if you pass it a feature, it will return the
 * geometry of that feature strip everything else.
 */
class GeoJSON implements GeoAdapter
{

    /**
     * Given an object or a string, return a Geometry
     *
     * @param string $input The GeoJSON string or object
     * @return Geometry
     * @throws \Exception
     */
    public function read(string $input): Geometry
    {
        #if (is_string($input)) {
            $input = json_decode($input);
        #}
        if (!is_object($input)) {
            throw new \Exception('Invalid JSON');
        }
        if (!isset($input->type) || !is_string($input->type)) {
            throw new \Exception('Invalid GeoJSON');
        }

        /** @var \stdClass $input */
        return $this->parseJSONObjects($input);
    }
    
    /**
     * @param \stdClass $input stdClass
     * @return Geometry
     */
    private function parseJSONObjects(\stdClass $input): Geometry
    {
        // FeatureCollection
        if ($input->type === 'FeatureCollection') {
            $geometries = [];
            foreach ($input->features as $feature) {
                $geometries[] = $this->parseJSONObjects($feature);
            }
            return geoPHP::buildGeometry($geometries);
        }

        // Feature
        if ($input->type === 'Feature') {
            return $this->geoJSONFeatureToGeometry($input);
        }

        // Geometry
        return $this->geoJSONObjectToGeometry($input);
    }

    /**
     * @param \stdClass $input
     * @return int|null
     */
    private function getSRID($input)
    {
        if (isset($input->crs->properties->name)) {
            $m = [];
            // parse CRS codes in forms "EPSG:1234" and "urn:ogc:def:crs:EPSG::1234"
            preg_match('#EPSG[:]+(\d+)#', $input->crs->properties->name, $m);
            return isset($m[1]) ? (int) $m[1] : null;
        }
        
        return null;
    }

    /**
     * @param \stdClass $obj
     * @return Geometry
     * @throws \Exception
     */
    private function geoJSONFeatureToGeometry($obj): Geometry
    {
        $geometry = $this->parseJSONObjects($obj->geometry);
        if (isset($obj->properties)) {
            foreach ($obj->properties as $property => $value) {
                $geometry->setData($property, $value);
            }
        }

        return $geometry;
    }

    /**
     * @param \stdClass $obj
     * @return Geometry
     * @throws \Exception
     */
    private function geoJSONObjectToGeometry($obj): Geometry
    {
        $type = $obj->type;

        if ($type === 'GeometryCollection') {
            return $this->geoJSONObjectToGeometryCollection($obj);
        }
        $method = 'arrayTo' . $type;
        /** @var GeometryCollection $geometry */
        $geometry = $this->$method($obj->coordinates);
        $geometry->setSRID($this->getSRID($obj));
        
        return $geometry;
    }

    /**
     * @param array<int|float> $coordinates Array of coordinates
     * @return Point
     */
    private function arrayToPoint(array $coordinates): Point
    {
        switch (count($coordinates)) {
            case 2:
                return new Point($coordinates[0], $coordinates[1]);
            case 3:
                return new Point($coordinates[0], $coordinates[1], $coordinates[2]);
            case 4:
                return new Point($coordinates[0], $coordinates[1], $coordinates[2], $coordinates[3]);
            default:
                return new Point();
        }
    }

    /**
     * @param array<array> $array
     * @return LineString
     */
    private function arrayToLineString(array $array): LineString
    {
        $points = [];
        foreach ($array as $componentArray) {
            $points[] = $this->arrayToPoint($componentArray);
        }
        return new LineString($points);
    }

    /**
     * @param array<array> $array
     * @return Polygon
     */
    private function arrayToPolygon(array $array): Polygon
    {
        $lines = [];
        foreach ($array as $componentArray) {
            $lines[] = $this->arrayToLineString($componentArray);
        }
        return new Polygon($lines);
    }

    /**
     * @noinspection PhpUnusedPrivateMethodInspection
     * @param array<array> $array
     * @return MultiPoint
     */
    private function arrayToMultiPoint(array $array): MultiPoint
    {
        $points = [];
        foreach ($array as $componentArray) {
            $points[] = $this->arrayToPoint($componentArray);
        }
        return new MultiPoint($points);
    }

    /**
     * @noinspection PhpUnusedPrivateMethodInspection
     * @param array<array> $array
     * @return MultiLineString
     */
    private function arrayToMultiLineString(array $array): MultiLineString
    {
        $lines = [];
        foreach ($array as $componentArray) {
            $lines[] = $this->arrayToLineString($componentArray);
        }
        return new MultiLineString($lines);
    }

    /**
     * @noinspection PhpUnusedPrivateMethodInspection
     * @param array<array> $array
     * @return MultiPolygon
     */
    private function arrayToMultiPolygon(array $array): MultiPolygon
    {
        $polygons = [];
        foreach ($array as $componentArray) {
            $polygons[] = $this->arrayToPolygon($componentArray);
        }
        return new MultiPolygon($polygons);
    }

    /**
     * @param \stdClass $obj
     * @throws \Exception
     * @return GeometryCollection
     */
    private function geoJSONObjectToGeometryCollection($obj): GeometryCollection
    {
        if (!isset($obj->geometries) || !is_array($obj->geometries)) {
            throw new \Exception('Invalid GeoJSON: GeometryCollection with no component geometries.');
        }
        
        $geometries = [];
        foreach ($obj->geometries as $componentObject) {
            $geometries[] = $this->geoJSONObjectToGeometry($componentObject);
        }
        
        $collection = new GeometryCollection($geometries);
        $collection->setSRID($this->getSRID($obj));
        
        return $collection;
    }

    /**
     * Serializes an object into a geojson string
     *
     * @param Geometry $geometry The object to serialize
     * @return string The GeoJSON string
     */
    public function write(Geometry $geometry): string
    {
        $response = json_encode($this->getArray($geometry));
        return $response ? $response : '';
    }

    /**
     * Creates a geoJSON array
     *
     * If the root geometry is a GeometryCollection and any of its geometries has data,
     * the root element will be a FeatureCollection with Feature elements (with the data).
     * If the root geometry has data, it will be included in a Feature object that contains the data.
     *
     * The geometry should have geographical coordinates since CRS support has been removed from from geoJSON specification (RFC 7946)
     * The geometry should'nt be measured, since geoJSON specification (RFC 7946) only supports the dimensional positions.
     *
     * @param Geometry|GeometryCollection $geometry
     * @param bool $isRoot Is geometry the root geometry?
     * @return array<string, mixed>
     */
    public function getArray(Geometry $geometry, bool $isRoot = true): array
    {
        if ($geometry->geometryType() === Geometry::GEOMETRY_COLLECTION) {
            $components = [];
            $isFeatureCollection = false;
            foreach ($geometry->getComponents() as $component) {
                if ($component->getData() !== null) {
                    $isFeatureCollection = true;
                }
                $components[] = $this->getArray($component, false);
            }
            if (!$isFeatureCollection || !$isRoot) {
                return [
                    'type' => 'GeometryCollection',
                    'geometries' => $components
                ];
            } else {
                $features = [];
                foreach ($geometry->getComponents() as $i => $component) {
                    $features[] = [
                        'type' => 'Feature',
                        'properties' => $component->getData(),
                        'geometry' => $components[$i],
                    ];
                }
                return [
                    'type' => 'FeatureCollection',
                    'features' => $features
                ];
            }
        }

        if ($isRoot && $geometry->getData() !== null) {
            return [
                'type' => 'Feature',
                'properties' => $geometry->getData(),
                'geometry' => [
                    'type' => $geometry->geometryType(),
                    'coordinates' => $geometry->isEmpty() ? [] : $geometry->asArray()
                ]
            ];
        }
        $object = [
            'type' => $geometry->geometryType(),
            'coordinates' => $geometry->isEmpty() ? [] : $geometry->asArray()
        ];
        return $object;
    }
}


1			<?php
2			namespace geoPHP\Adapter;
3
4			use geoPHP\geoPHP;
5			use geoPHP\Geometry\Geometry;
6			use geoPHP\Geometry\GeometryCollection;
7			use geoPHP\Geometry\Point;
8			use geoPHP\Geometry\MultiPoint;
9			use geoPHP\Geometry\LineString;
10			use geoPHP\Geometry\MultiLineString;
11			use geoPHP\Geometry\Polygon;
12			use geoPHP\Geometry\MultiPolygon;
13
14			/**
15			* GeoJSON class : a geoJSON reader/writer.
16			*
17			* Note that it will always return a GeoJSON geometry. This
18			* means that if you pass it a feature, it will return the
19			* geometry of that feature strip everything else.
20			*/
21			class GeoJSON implements GeoAdapter
22			{
23
24			/**
25			* Given an object or a string, return a Geometry
26			*
27			* @param string $input The GeoJSON string or object
28			* @return Geometry
29			* @throws \Exception
30			*/
31			public function read(string $input): Geometry
32			{
33			#if (is_string($input)) {
34			$input = json_decode($input);
35			#}
36			if (!is_object($input)) {
37			throw new \Exception('Invalid JSON');
38			}
39			if (!isset($input->type) \|\| !is_string($input->type)) {
40			throw new \Exception('Invalid GeoJSON');
41			}
42
43			/** @var \stdClass $input */
44			return $this->parseJSONObjects($input);
45			}
46
47			/**
48			* @param \stdClass $input stdClass
49			* @return Geometry
50			*/
51			private function parseJSONObjects(\stdClass $input): Geometry
52			{
53			// FeatureCollection
54			if ($input->type === 'FeatureCollection') {
55			$geometries = [];
56			foreach ($input->features as $feature) {
57			$geometries[] = $this->parseJSONObjects($feature);
58			}
59			return geoPHP::buildGeometry($geometries);
60			}
61
62			// Feature
63			if ($input->type === 'Feature') {
64			return $this->geoJSONFeatureToGeometry($input);
65			}
66
67			// Geometry
68			return $this->geoJSONObjectToGeometry($input);
69			}
70
71			/**
72			* @param \stdClass $input
73			* @return int\|null
74			*/
75			private function getSRID($input)
76			{
77			if (isset($input->crs->properties->name)) {
78			$m = [];
79			// parse CRS codes in forms "EPSG:1234" and "urn:ogc:def:crs:EPSG::1234"
80			preg_match('#EPSG[:]+(\d+)#', $input->crs->properties->name, $m);
81			return isset($m[1]) ? (int) $m[1] : null;
82			}
83
84			return null;
85			}
86
87			/**
88			* @param \stdClass $obj
89			* @return Geometry
90			* @throws \Exception
91			*/
92			private function geoJSONFeatureToGeometry($obj): Geometry
93			{
94			$geometry = $this->parseJSONObjects($obj->geometry);
95			if (isset($obj->properties)) {
96			foreach ($obj->properties as $property => $value) {
97			$geometry->setData($property, $value);
98			}
99			}
100
101			return $geometry;
102			}
103
104			/**
105			* @param \stdClass $obj
106			* @return Geometry
107			* @throws \Exception
108			*/
109			private function geoJSONObjectToGeometry($obj): Geometry
110			{
111			$type = $obj->type;
112
113			if ($type === 'GeometryCollection') {
114			return $this->geoJSONObjectToGeometryCollection($obj);
115			}
116			$method = 'arrayTo' . $type;
117			/** @var GeometryCollection $geometry */
118			$geometry = $this->$method($obj->coordinates);
119			$geometry->setSRID($this->getSRID($obj));
120
121			return $geometry;
122			}
123
124			/**
125			* @param array<int\|float> $coordinates Array of coordinates
126			* @return Point
127			*/
128			private function arrayToPoint(array $coordinates): Point
129			{
130			switch (count($coordinates)) {
131			case 2:
132			return new Point($coordinates[0], $coordinates[1]);
133			case 3:
134			return new Point($coordinates[0], $coordinates[1], $coordinates[2]);
135			case 4:
136			return new Point($coordinates[0], $coordinates[1], $coordinates[2], $coordinates[3]);
137			default:
138			return new Point();
139			}
140			}
141
142			/**
143			* @param array<array> $array
144			* @return LineString
145			*/
146			private function arrayToLineString(array $array): LineString
147			{
148			$points = [];
149			foreach ($array as $componentArray) {
150			$points[] = $this->arrayToPoint($componentArray);
151			}
152			return new LineString($points);
153			}
154
155			/**
156			* @param array<array> $array
157			* @return Polygon
158			*/
159			private function arrayToPolygon(array $array): Polygon
160			{
161			$lines = [];
162			foreach ($array as $componentArray) {
163			$lines[] = $this->arrayToLineString($componentArray);
164			}
165			return new Polygon($lines);
166			}
167
168			/**
169			* @noinspection PhpUnusedPrivateMethodInspection
170			* @param array<array> $array
171			* @return MultiPoint
172			*/
173			private function arrayToMultiPoint(array $array): MultiPoint
174			{
175			$points = [];
176			foreach ($array as $componentArray) {
177			$points[] = $this->arrayToPoint($componentArray);
178			}
179			return new MultiPoint($points);
180			}
181
182			/**
183			* @noinspection PhpUnusedPrivateMethodInspection
184			* @param array<array> $array
185			* @return MultiLineString
186			*/
187			private function arrayToMultiLineString(array $array): MultiLineString
188			{
189			$lines = [];
190			foreach ($array as $componentArray) {
191			$lines[] = $this->arrayToLineString($componentArray);
192			}
193			return new MultiLineString($lines);
194			}
195
196			/**
197			* @noinspection PhpUnusedPrivateMethodInspection
198			* @param array<array> $array
199			* @return MultiPolygon
200			*/
201			private function arrayToMultiPolygon(array $array): MultiPolygon
202			{
203			$polygons = [];
204			foreach ($array as $componentArray) {
205			$polygons[] = $this->arrayToPolygon($componentArray);
206			}
207			return new MultiPolygon($polygons);
208			}
209
210			/**
211			* @param \stdClass $obj
212			* @throws \Exception
213			* @return GeometryCollection
214			*/
215			private function geoJSONObjectToGeometryCollection($obj): GeometryCollection
216			{
217			if (!isset($obj->geometries) \|\| !is_array($obj->geometries)) {
218			throw new \Exception('Invalid GeoJSON: GeometryCollection with no component geometries.');
219			}
220
221			$geometries = [];
222			foreach ($obj->geometries as $componentObject) {
223			$geometries[] = $this->geoJSONObjectToGeometry($componentObject);
224			}
225
226			$collection = new GeometryCollection($geometries);
227			$collection->setSRID($this->getSRID($obj));
228
229			return $collection;
230			}
231
232			/**
233			* Serializes an object into a geojson string
234			*
235			* @param Geometry $geometry The object to serialize
236			* @return string The GeoJSON string
237			*/
238			public function write(Geometry $geometry): string
239			{
240			$response = json_encode($this->getArray($geometry));
241			return $response ? $response : '';
242			}
243
244			/**
245			* Creates a geoJSON array
246			*
247			* If the root geometry is a GeometryCollection and any of its geometries has data,
248			* the root element will be a FeatureCollection with Feature elements (with the data).
249			* If the root geometry has data, it will be included in a Feature object that contains the data.
250			*
251			* The geometry should have geographical coordinates since CRS support has been removed from from geoJSON specification (RFC 7946)
252			* The geometry should'nt be measured, since geoJSON specification (RFC 7946) only supports the dimensional positions.
253			*
254			* @param Geometry\|GeometryCollection $geometry
255			* @param bool $isRoot Is geometry the root geometry?
256			* @return array<string, mixed>
257			*/
258			public function getArray(Geometry $geometry, bool $isRoot = true): array
259			{
260			if ($geometry->geometryType() === Geometry::GEOMETRY_COLLECTION) {
261			$components = [];
262			$isFeatureCollection = false;
263			foreach ($geometry->getComponents() as $component) {
264			if ($component->getData() !== null) {
265			$isFeatureCollection = true;
266			}
267			$components[] = $this->getArray($component, false);
268			}
269			if (!$isFeatureCollection \|\| !$isRoot) {
270			return [
271			'type' => 'GeometryCollection',
272			'geometries' => $components
273			];
274			} else {
275			$features = [];
276			foreach ($geometry->getComponents() as $i => $component) {
277			$features[] = [
278			'type' => 'Feature',
279			'properties' => $component->getData(),
280			'geometry' => $components[$i],
281			];
282			}
283			return [
284			'type' => 'FeatureCollection',
285			'features' => $features
286			];
287			}
288			}
289
290			if ($isRoot && $geometry->getData() !== null) {
291			return [
292			'type' => 'Feature',
293			'properties' => $geometry->getData(),
294			'geometry' => [
295			'type' => $geometry->geometryType(),
296			'coordinates' => $geometry->isEmpty() ? [] : $geometry->asArray()
297			]
298			];
299			}
300			$object = [
301			'type' => $geometry->geometryType(),
302			'coordinates' => $geometry->isEmpty() ? [] : $geometry->asArray()
303			];
304			return $object;
305			}
306			}
307

swen100 / geoPHP

GeoJSON::read() A last analyzed 2022-08-18 15:20 UTC

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GeoJSON::read() A
last analyzed 2022-08-18 15:20 UTC