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<?php |
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namespace DataValues\Geo\Parsers; |
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use DataValues\Geo\Values\GlobeCoordinateValue; |
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use DataValues\Geo\Values\LatLongValue; |
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use ValueParsers\ParseException; |
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use ValueParsers\ParserOptions; |
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use ValueParsers\StringValueParser; |
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use ValueParsers\ValueParser; |
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/** |
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* Extends the LatLongParser by adding precision detection support. |
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* |
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* The object that gets constructed is a GlobeCoordinateValue rather then a LatLongValue. |
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* |
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* @since 0.1 |
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* |
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* @license GPL-2.0+ |
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* @author Jeroen De Dauw < [email protected] > |
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* @author H. Snater < [email protected] > |
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* @author Thiemo Mättig |
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*/ |
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class GlobeCoordinateParser implements ValueParser { |
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const FORMAT_NAME = 'globe-coordinate'; |
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/** |
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* Option specifying the globe. Should be a string containing a Wikidata concept URI. Defaults |
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* to Earth. |
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*/ |
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const OPT_GLOBE = 'globe'; |
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private $options; |
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public function __construct( ParserOptions $options = null ) { |
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$this->options = $options ?: new ParserOptions(); |
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$this->options->defaultOption( ValueParser::OPT_LANG, 'en' ); |
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$this->options->defaultOption( self::OPT_GLOBE, 'http://www.wikidata.org/entity/Q2' ); |
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} |
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public function setOptions( ParserOptions $options ) { |
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// TODO: remove |
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$this->options = $options; |
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} |
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/** |
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* @see StringValueParser::stringParse |
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* |
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* @param string $value |
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* |
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* @throws ParseException |
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* @return GlobeCoordinateValue |
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*/ |
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public function parse( $value ) { |
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foreach ( $this->getParsers() as $precisionDetector => $parser ) { |
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try { |
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$latLong = $parser->parse( $value ); |
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return new GlobeCoordinateValue( |
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new LatLongValue( |
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$latLong->getLatitude(), |
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$latLong->getLongitude() |
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), |
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$this->detectPrecision( $latLong, $precisionDetector ), |
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$this->options->getOption( self::OPT_GLOBE ) |
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); |
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} catch ( ParseException $parseException ) { |
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continue; |
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} |
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} |
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throw new ParseException( |
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'The format of the coordinate could not be determined.', |
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$value, |
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self::FORMAT_NAME |
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); |
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} |
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/** |
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* @param LatLongValue $latLong |
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* @param string $precisionDetector |
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* |
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* @return float|int |
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*/ |
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private function detectPrecision( LatLongValue $latLong, $precisionDetector ) { |
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if ( $this->options->hasOption( 'precision' ) ) { |
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return $this->options->getOption( 'precision' ); |
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} |
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return min( |
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call_user_func( [ $this, $precisionDetector ], $latLong->getLatitude() ), |
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call_user_func( [ $this, $precisionDetector ], $latLong->getLongitude() ) |
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); |
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} |
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/** |
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* @return ValueParser[] |
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*/ |
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private function getParsers() { |
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$parsers = []; |
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$parsers['detectFloatPrecision'] = new FloatCoordinateParser( $this->options ); |
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$parsers['detectDmsPrecision'] = new DmsCoordinateParser( $this->options ); |
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$parsers['detectDmPrecision'] = new DmCoordinateParser( $this->options ); |
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$parsers['detectDdPrecision'] = new DdCoordinateParser( $this->options ); |
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return $parsers; |
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} |
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/** |
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* @param float $degree |
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* |
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* @return float|int |
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*/ |
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protected function detectDdPrecision( $degree ) { |
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return $this->detectFloatPrecision( $degree ); |
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} |
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/** |
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* @param float $degree |
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* |
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* @return float|int |
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*/ |
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protected function detectDmPrecision( $degree ) { |
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$minutes = $degree * 60; |
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$split = explode( '.', round( $minutes, 6 ) ); |
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if ( isset( $split[1] ) ) { |
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return $this->detectDmsPrecision( $degree ); |
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} |
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return 1 / 60; |
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} |
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/** |
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* @param float $degree |
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* |
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* @return float|int |
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*/ |
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protected function detectDmsPrecision( $degree ) { |
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$seconds = $degree * 3600; |
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$split = explode( '.', round( $seconds, 4 ) ); |
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if ( isset( $split[1] ) ) { |
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return pow( 10, -strlen( $split[1] ) ) / 3600; |
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} |
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return 1 / 3600; |
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} |
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/** |
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* @param float $degree |
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* |
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* @return float|int |
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*/ |
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protected function detectFloatPrecision( $degree ) { |
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$split = explode( '.', round( $degree, 8 ) ); |
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if ( isset( $split[1] ) ) { |
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return pow( 10, -strlen( $split[1] ) ); |
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} |
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return 1; |
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} |
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} |
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DataValues /
Geo
