126 lines
3.4 KiB
C++
126 lines
3.4 KiB
C++
/**********************************************************************
|
|
*
|
|
* GEOS - Geometry Engine Open Source
|
|
* http://geos.osgeo.org
|
|
*
|
|
* Copyright (C) 2021 Jared Erickson
|
|
*
|
|
* This is free software; you can redistribute and/or modify it under
|
|
* the terms of the GNU Lesser General Public Licence as published
|
|
* by the Free Software Foundation.
|
|
* See the COPYING file for more information.
|
|
*
|
|
**********************************************************************/
|
|
|
|
#pragma once
|
|
|
|
#include <geos/export.h>
|
|
|
|
#include <geos/io/GeoJSON.h>
|
|
#include <geos/geom/GeometryFactory.h>
|
|
#include <geos/geom/CoordinateSequence.h>
|
|
#include <geos/geom/Geometry.h>
|
|
#include <string>
|
|
#include "geos/vend/include_nlohmann_json.hpp"
|
|
|
|
// Forward declarations
|
|
namespace geos {
|
|
namespace geom {
|
|
class Coordinate;
|
|
class GeometryCollection;
|
|
class Point;
|
|
class LineString;
|
|
class LinearRing;
|
|
class Polygon;
|
|
class MultiPoint;
|
|
class MultiLineString;
|
|
class MultiPolygon;
|
|
class PrecisionModel;
|
|
}
|
|
}
|
|
|
|
namespace geos {
|
|
namespace io {
|
|
|
|
/**
|
|
* \class GeoJSONReader
|
|
* \brief GeoJSON reader class; see also GeoJSONWriter.
|
|
*/
|
|
class GEOS_DLL GeoJSONReader {
|
|
public:
|
|
|
|
/**
|
|
* \brief Initialize parser with given GeometryFactory.
|
|
*
|
|
* Note that all Geometry objects created by the
|
|
* parser will contain a pointer to the given factory
|
|
* so be sure you'll keep the factory alive for the
|
|
* whole GeoJSONReader and created Geometry life.
|
|
*/
|
|
GeoJSONReader(const geom::GeometryFactory& gf);
|
|
|
|
/**
|
|
* \brief Initialize parser with default GeometryFactory.
|
|
*
|
|
*/
|
|
GeoJSONReader();
|
|
|
|
~GeoJSONReader() = default;
|
|
|
|
/// Parse a GeoJSON string returning a Geometry
|
|
std::unique_ptr<geom::Geometry> read(const std::string& geoJsonText) const;
|
|
|
|
GeoJSONFeatureCollection readFeatures(const std::string& geoJsonText) const;
|
|
|
|
private:
|
|
|
|
const geom::GeometryFactory& geometryFactory;
|
|
|
|
std::unique_ptr<geom::Geometry> readFeatureForGeometry(const geos_nlohmann::json& j) const;
|
|
|
|
GeoJSONFeature readFeature(const geos_nlohmann::json& j) const;
|
|
|
|
std::map<std::string, GeoJSONValue> readProperties(const geos_nlohmann::json& p) const;
|
|
|
|
GeoJSONValue readProperty(const geos_nlohmann::json& p) const;
|
|
|
|
std::unique_ptr<geom::Geometry> readFeatureCollectionForGeometry(
|
|
const geos_nlohmann::json& j) const;
|
|
|
|
GeoJSONFeatureCollection readFeatureCollection(
|
|
const geos_nlohmann::json& j) const;
|
|
|
|
std::unique_ptr<geom::Geometry> readGeometry(
|
|
const geos_nlohmann::json& j) const;
|
|
|
|
std::unique_ptr<geom::Point> readPoint(const geos_nlohmann::json& j) const;
|
|
|
|
geom::Coordinate readCoordinate(const std::vector<double>& coords) const;
|
|
|
|
std::unique_ptr<geom::LineString> readLineString(
|
|
const geos_nlohmann::json& j) const;
|
|
|
|
std::unique_ptr<geom::Polygon> readPolygon(
|
|
const geos_nlohmann::json& j) const;
|
|
|
|
std::unique_ptr<geom::Polygon> readPolygon(
|
|
const std::vector<std::vector<std::vector<double>>>& c) const;
|
|
|
|
std::unique_ptr<geom::MultiPoint> readMultiPoint(
|
|
const geos_nlohmann::json& j) const;
|
|
|
|
std::unique_ptr<geom::MultiLineString> readMultiLineString(
|
|
const geos_nlohmann::json& j) const;
|
|
|
|
std::unique_ptr<geom::MultiPolygon> readMultiPolygon(
|
|
const geos_nlohmann::json& j) const;
|
|
|
|
std::unique_ptr<geom::GeometryCollection> readGeometryCollection(
|
|
const geos_nlohmann::json& j) const;
|
|
|
|
};
|
|
|
|
} // namespace io
|
|
} // namespace geos
|
|
|