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165 lines
4.1 KiB
C++
165 lines
4.1 KiB
C++
/**********************************************************************
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*
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* GEOS - Geometry Engine Open Source
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* http://geos.osgeo.org
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*
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* Copyright (C) 2005-2006 Refractions Research Inc.
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* Copyright (C) 2001-2002 Vivid Solutions Inc.
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*
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* This is free software; you can redistribute and/or modify it under
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* the terms of the GNU Lesser General Public Licence as published
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* by the Free Software Foundation.
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* See the COPYING file for more information.
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*
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**********************************************************************
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*
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* Last port: io/WKBReader.java rev. 1.1 (JTS-1.7)
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*
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**********************************************************************/
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#ifndef GEOS_IO_WKBREADER_H
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#define GEOS_IO_WKBREADER_H
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#include <geos/export.h>
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#include <geos/io/ByteOrderDataInStream.h> // for composition
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#include <iosfwd> // ostream, istream
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#include <memory>
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// #include <vector>
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#include <array>
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#define BAD_GEOM_TYPE_MSG "Bad geometry type encountered in"
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#ifdef _MSC_VER
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#pragma warning(push)
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#pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
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#endif
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// Forward declarations
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namespace geos {
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namespace geom {
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class GeometryFactory;
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class Coordinate;
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class Geometry;
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class GeometryCollection;
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class Point;
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class LineString;
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class LinearRing;
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class Polygon;
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class MultiPoint;
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class MultiLineString;
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class MultiPolygon;
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class PrecisionModel;
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class CoordinateSequence;
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} // namespace geom
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} // namespace geos
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namespace geos {
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namespace io {
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/**
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* \class WKBReader
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*
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* \brief Reads a Geometry from Well-Known Binary format.
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*
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* This class is designed to support reuse of a single instance to read
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* multiple geometries. This class is not thread-safe; each thread should
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* create its own instance.
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*
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* The Well-known Binary format is defined in the <A
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* HREF="http://www.opengis.org/techno/specs.htm">OpenGIS Simple Features
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* Specification for SQL</A>.
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* This implementation supports the extended WKB standard which allows
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* representing 3-dimensional coordinates.
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*
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*/
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class GEOS_DLL WKBReader {
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public:
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WKBReader(geom::GeometryFactory const& f);
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/// Inizialize parser with default GeometryFactory.
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WKBReader();
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/**
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* \brief Reads a Geometry from an istream.
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*
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* @param is the stream to read from
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* @return the Geometry read
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* @throws IOException
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* @throws ParseException
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*/
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std::unique_ptr<geom::Geometry> read(std::istream& is);
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/**
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* \brief Reads a Geometry from an istream in hex format.
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*
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* @param is the stream to read from
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* @return the Geometry read
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* @throws IOException
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* @throws ParseException
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*/
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std::unique_ptr<geom::Geometry> readHEX(std::istream& is);
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/**
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* \brief Print WKB in HEX form to out stream
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*
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* @param is is the stream to read from
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* @param os is the stream to write to
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*/
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static std::ostream& printHEX(std::istream& is, std::ostream& os);
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private:
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const geom::GeometryFactory& factory;
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// for now support the WKB standard only - may be generalized later
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unsigned int inputDimension;
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bool hasZ;
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bool hasM;
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ByteOrderDataInStream dis;
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std::array<double, 4> ordValues;
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std::unique_ptr<geom::Geometry> readGeometry();
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std::unique_ptr<geom::Point> readPoint();
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std::unique_ptr<geom::LineString> readLineString();
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std::unique_ptr<geom::LinearRing> readLinearRing();
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std::unique_ptr<geom::Polygon> readPolygon();
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std::unique_ptr<geom::MultiPoint> readMultiPoint();
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std::unique_ptr<geom::MultiLineString> readMultiLineString();
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std::unique_ptr<geom::MultiPolygon> readMultiPolygon();
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std::unique_ptr<geom::GeometryCollection> readGeometryCollection();
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std::unique_ptr<geom::CoordinateSequence> readCoordinateSequence(int); // throws IOException
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void readCoordinate(); // throws IOException
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// Declare type as noncopyable
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WKBReader(const WKBReader& other) = delete;
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WKBReader& operator=(const WKBReader& rhs) = delete;
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};
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} // namespace io
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} // namespace geos
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#ifdef _MSC_VER
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#pragma warning(pop)
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#endif
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#endif // #ifndef GEOS_IO_WKBREADER_H
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