예제 #1
0
void QgsMssqlGeometryParser::ReadGeometryCollection( int iShape )
{
  int i;
  int iCount = nNumShapes - iShape - 1;;
  if ( iCount <= 0 )
    return;
  // copy byte order
  CopyBytes( &chByteOrder, 1 );
  // copy type
  int wkbType = QGis::WKBUnknown;;
  CopyBytes( &wkbType, 4 );
  // copy geom count
  CopyBytes( &iCount, 4 );
  for ( i = iShape + 1; i < nNumShapes; i++ )
  {
    if ( ParentOffset( i ) == ( unsigned int )iShape )
    {
      switch ( ShapeType( i ) )
      {
        case ST_POINT:
          ReadPoint( i );
          break;
        case ST_LINESTRING:
          ReadLineString( i );
          break;
        case ST_POLYGON:
          ReadPolygon( i );
          break;
        case ST_MULTIPOINT:
          ReadMultiPoint( i );
          break;
        case ST_MULTILINESTRING:
          ReadMultiLineString( i );
          break;
        case ST_MULTIPOLYGON:
          ReadMultiPolygon( i );
          break;
        case ST_GEOMETRYCOLLECTION:
          ReadGeometryCollection( i );
          break;
      }
    }
  }
}
예제 #2
0
OGRGeometryCollection* OGRMSSQLGeometryParser::ReadGeometryCollection(int iShape)
{
    int i;
    OGRGeometryCollection* poGeomColl = new OGRGeometryCollection();
    OGRGeometry* poGeom;

    for (i = iShape + 1; i < nNumShapes; i++)
    {
        poGeom = NULL;
        if (ParentOffset(i) == (unsigned int)iShape)
        {
            switch (ShapeType(i))
            {
            case ST_POINT:
                poGeom = ReadPoint(i);
                break;
            case ST_LINESTRING:
                poGeom = ReadLineString(i);
                break;
            case ST_POLYGON:
                poGeom = ReadPolygon(i);
                break;
            case ST_MULTIPOINT:
                poGeom = ReadMultiPoint(i);
                break;
            case ST_MULTILINESTRING:
                poGeom = ReadMultiLineString(i);
                break;
            case ST_MULTIPOLYGON:
                poGeom = ReadMultiPolygon(i);
                break;
            case ST_GEOMETRYCOLLECTION:
                poGeom = ReadGeometryCollection(i);
                break;
            }
        }
        if ( poGeom )
            poGeomColl->addGeometryDirectly( poGeom );
    }

    return poGeomColl;
}
예제 #3
0
mapnik::geometry::geometry_collection<double> sqlserver_geometry_parser::ReadGeometryCollection(int iShape)
{
    mapnik::geometry::geometry_collection<double> geom;

    for (int i = iShape + 1; i < nNumShapes; i++) {
        mapnik::geometry::geometry<double> shape = mapnik::geometry::geometry_empty();
        if (ParentOffset(i) == (unsigned int)iShape) {
            switch (ShapeType(i))
            {
            case ST_POINT:
                shape = ReadPoint(i);
                break;
            case ST_LINESTRING:
                shape = ReadLineString(i);
                break;
            case ST_POLYGON:
                shape = ReadPolygon(i);
                break;
            case ST_MULTIPOINT:
                shape = ReadMultiPoint(i);
                break;
            case ST_MULTILINESTRING:
                shape = ReadMultiLineString(i);
                break;
            case ST_MULTIPOLYGON:
                shape = ReadMultiPolygon(i);
                break;
            case ST_GEOMETRYCOLLECTION:
                shape = ReadGeometryCollection(i);
                break;
            }
        }
        geom.push_back(shape);
    }

  return geom;
}
예제 #4
0
unsigned char* QgsMssqlGeometryParser::ParseSqlGeometry( unsigned char* pszInput, int nLen )
{
  if ( nLen < 10 )
  {
    QgsDebugMsg( "ParseSqlGeometry not enough data" );
    DumpMemoryToLog( "Not enough data", pszInput, nLen );
    return NULL;
  }

  pszData = pszInput;
  nWkbMaxLen = nLen;

  /* store the SRS id for further use */
  nSRSId = ReadInt32( 0 );

  if ( ReadByte( 4 ) != 1 )
  {
    QgsDebugMsg( "ParseSqlGeometry corrupt data" );
    DumpMemoryToLog( "Corrupt data", pszInput, nLen );
    return NULL;
  }

  chProps = ReadByte( 5 );

  if ( chProps & SP_HASZVALUES && chProps & SP_HASMVALUES )
    nPointSize = 32;
  else if ( chProps & SP_HASZVALUES || chProps & SP_HASMVALUES )
    nPointSize = 24;
  else
    nPointSize = 16;

  /* store byte order */
  chByteOrder = QgsApplication::endian();

  pszWkb = new unsigned char[nLen]; // wkb should be less or equal in size
  nWkbLen = 0;

  if ( chProps & SP_ISSINGLEPOINT )
  {
    // single point geometry
    nNumPoints = 1;
    nPointPos = 6;

    if ( nLen < 6 + nPointSize )
    {
      delete [] pszWkb;
      QgsDebugMsg( "ParseSqlGeometry not enough data" );
      DumpMemoryToLog( "Not enough data", pszInput, nLen );
      return NULL;
    }

    CopyPoint( 0 );
  }
  else if ( chProps & SP_ISSINGLELINESEGMENT )
  {
    // single line segment with 2 points
    nNumPoints = 2;
    nPointPos = 6;

    if ( nLen < 6 + 2 * nPointSize )
    {
      delete [] pszWkb;
      QgsDebugMsg( "ParseSqlGeometry not enough data" );
      DumpMemoryToLog( "Not enough data", pszInput, nLen );
      return NULL;
    }

    // copy byte order
    CopyBytes( &chByteOrder, 1 );
    // copy type
    int wkbType;
    if ( chProps & SP_HASZVALUES )
      wkbType = QGis::WKBLineString25D;
    else
      wkbType = QGis::WKBLineString;
    CopyBytes( &wkbType, 4 );
    // copy point count
    int iCount = 2;
    CopyBytes( &iCount, 4 );
    // copy points
    CopyCoordinates( 0 );
    CopyCoordinates( 1 );
  }
  else
  {
    // complex geometries
    nNumPoints = ReadInt32( 6 );

    if ( nNumPoints <= 0 )
    {
      delete [] pszWkb;
      return NULL;
    }

    // position of the point array
    nPointPos = 10;

    // position of the figures
    nFigurePos = nPointPos + nPointSize * nNumPoints + 4;

    if ( nLen < nFigurePos )
    {
      delete [] pszWkb;
      QgsDebugMsg( "ParseSqlGeometry not enough data" );
      DumpMemoryToLog( "Not enough data", pszInput, nLen );
      return NULL;
    }

    nNumFigures = ReadInt32( nFigurePos - 4 );

    if ( nNumFigures <= 0 )
    {
      delete [] pszWkb;
      return NULL;
    }

    // position of the shapes
    nShapePos = nFigurePos + 5 * nNumFigures + 4;

    if ( nLen < nShapePos )
    {
      delete [] pszWkb;
      QgsDebugMsg( "ParseSqlGeometry not enough data" );
      DumpMemoryToLog( "Not enough data", pszInput, nLen );
      return NULL;
    }

    nNumShapes = ReadInt32( nShapePos - 4 );

    if ( nLen < nShapePos + 9 * nNumShapes )
    {
      delete [] pszWkb;
      QgsDebugMsg( "ParseSqlGeometry not enough data" );
      DumpMemoryToLog( "Not enough data", pszInput, nLen );
      return NULL;
    }

    if ( nNumShapes <= 0 )
    {
      delete [] pszWkb;
      return NULL;
    }

    // pick up the root shape
    if ( ParentOffset( 0 ) != 0xFFFFFFFF )
    {
      delete [] pszWkb;
      QgsDebugMsg( "ParseSqlGeometry corrupt data" );
      DumpMemoryToLog( "Not enough data", pszInput, nLen );
      return NULL;
    }

    // determine the shape type
    switch ( ShapeType( 0 ) )
    {
      case ST_POINT:
        ReadPoint( 0 );
        break;
      case ST_LINESTRING:
        ReadLineString( 0 );
        break;
      case ST_POLYGON:
        ReadPolygon( 0 );
        break;
      case ST_MULTIPOINT:
        ReadMultiPoint( 0 );
        break;
      case ST_MULTILINESTRING:
        ReadMultiLineString( 0 );
        break;
      case ST_MULTIPOLYGON:
        ReadMultiPolygon( 0 );
        break;
        //case ST_GEOMETRYCOLLECTION:
        //ReadGeometryCollection(0);
        //break;
      default:
        delete [] pszWkb;
        QgsDebugMsg( "ParseSqlGeometry unsupported geometry type" );
        DumpMemoryToLog( "Unsupported geometry type", pszInput, nLen );
        return NULL;
    }
  }

  return pszWkb;
}
예제 #5
0
OGRErr OGRMSSQLGeometryParser::ParseSqlGeometry(unsigned char* pszInput,
        int nLen, OGRGeometry **poGeom)
{
    if (nLen < 10)
        return OGRERR_NOT_ENOUGH_DATA;

    pszData = pszInput;

    /* store the SRS id for further use */
    nSRSId = ReadInt32(0);

    if ( ReadByte(4) != 1 )
    {
        return OGRERR_CORRUPT_DATA;
    }

    chProps = ReadByte(5);

    if ( chProps & SP_HASMVALUES )
        nPointSize = 32;
    else if ( chProps & SP_HASZVALUES )
        nPointSize = 24;
    else
        nPointSize = 16;

    if ( chProps & SP_ISSINGLEPOINT )
    {
        // single point geometry
        nNumPoints = 1;
        nPointPos = 6;

        if (nLen < 6 + nPointSize)
        {
            return OGRERR_NOT_ENOUGH_DATA;
        }

        if (nColType == MSSQLCOLTYPE_GEOGRAPHY)
        {
            if (chProps & SP_HASZVALUES)
                *poGeom = new OGRPoint(ReadY(0), ReadX(0), ReadZ(0));
            else
                *poGeom = new OGRPoint(ReadY(0), ReadX(0));
        }
        else
        {
            if (chProps & SP_HASZVALUES)
                *poGeom = new OGRPoint(ReadX(0), ReadY(0), ReadZ(0));
            else
                *poGeom = new OGRPoint(ReadX(0), ReadY(0));
        }
    }
    else if ( chProps & SP_ISSINGLELINESEGMENT )
    {
        // single line segment with 2 points
        nNumPoints = 2;
        nPointPos = 6;

        if (nLen < 6 + 2 * nPointSize)
        {
            return OGRERR_NOT_ENOUGH_DATA;
        }

        OGRLineString* line = new OGRLineString();
        line->setNumPoints(2);

        if (nColType == MSSQLCOLTYPE_GEOGRAPHY)
        {
            if ( chProps & SP_HASZVALUES )
            {
                line->setPoint(0, ReadY(0), ReadX(0), ReadZ(0));
                line->setPoint(1, ReadY(1), ReadX(1), ReadZ(1));
            }
            else
            {
                line->setPoint(0, ReadY(0), ReadX(0));
                line->setPoint(1, ReadY(1), ReadX(1));
            }
        }
        else
        {
            if ( chProps & SP_HASZVALUES )
            {
                line->setPoint(0, ReadX(0), ReadY(0), ReadZ(0));
                line->setPoint(1, ReadX(1), ReadY(1), ReadZ(1));
            }
            else
            {
                line->setPoint(0, ReadX(0), ReadY(0));
                line->setPoint(1, ReadX(1), ReadY(1));
            }
        }

        *poGeom = line;
    }
    else
    {
        // complex geometries
        nNumPoints = ReadInt32(6);

        if ( nNumPoints <= 0 )
        {
            return OGRERR_NONE;
        }

        // position of the point array
        nPointPos = 10;

        // position of the figures
        nFigurePos = nPointPos + nPointSize * nNumPoints + 4;

        if (nLen < nFigurePos)
        {
            return OGRERR_NOT_ENOUGH_DATA;
        }

        nNumFigures = ReadInt32(nFigurePos - 4);

        if ( nNumFigures <= 0 )
        {
            return OGRERR_NONE;
        }

        // position of the shapes
        nShapePos = nFigurePos + 5 * nNumFigures + 4;

        if (nLen < nShapePos)
        {
            return OGRERR_NOT_ENOUGH_DATA;
        }

        nNumShapes = ReadInt32(nShapePos - 4);

        if (nLen < nShapePos + 9 * nNumShapes)
        {
            return OGRERR_NOT_ENOUGH_DATA;
        }

        if ( nNumShapes <= 0 )
        {
            return OGRERR_NONE;
        }

        // pick up the root shape
        if ( ParentOffset(0) != 0xFFFFFFFF)
        {
            return OGRERR_CORRUPT_DATA;
        }

        // determine the shape type
        switch (ShapeType(0))
        {
        case ST_POINT:
            *poGeom = ReadPoint(0);
            break;
        case ST_LINESTRING:
            *poGeom = ReadLineString(0);
            break;
        case ST_POLYGON:
            *poGeom = ReadPolygon(0);
            break;
        case ST_MULTIPOINT:
            *poGeom = ReadMultiPoint(0);
            break;
        case ST_MULTILINESTRING:
            *poGeom = ReadMultiLineString(0);
            break;
        case ST_MULTIPOLYGON:
            *poGeom = ReadMultiPolygon(0);
            break;
        case ST_GEOMETRYCOLLECTION:
            *poGeom = ReadGeometryCollection(0);
            break;
        default:
            return OGRERR_UNSUPPORTED_GEOMETRY_TYPE;
        }
    }

    return OGRERR_NONE;
}
예제 #6
0
mapnik::geometry::geometry<double> sqlserver_geometry_parser::parse(unsigned char* pszInput, int nLen)
{
    if (nLen < 10) {
        throw sqlserver_geometry_parser_exception("not enough data, nLen < 10");
    }
    
    pszData = pszInput;
    
    /* store the SRS id for further use */
    nSRSId = ReadInt32(0);
    
    if ( ReadByte(4) != 1 )
    {
        throw sqlserver_geometry_parser_exception("corrupt data, ReadByte(4) != 1");
    }

    chProps = ReadByte(5);

    if ( chProps & SP_HASMVALUES )
        nPointSize = 32;
    else if ( chProps & SP_HASZVALUES )
        nPointSize = 24;
    else
        nPointSize = 16;

    mapnik::geometry::geometry<double> geom;
    if ( chProps & SP_ISSINGLEPOINT )
    {
        // single point geometry
        nNumPoints = 1;
        nPointPos = 6;

        if (nLen < 6 + nPointSize)
        {
            throw sqlserver_geometry_parser_exception("not enough data, nLen < 6 + nPointSize");
        }
        
        mapnik::geometry::point<double> point;
        
        if (colType == Geography)
        {
            point.x = ReadY(0);
            point.y = ReadX(0);
        }
        else
        {
            point.x = ReadX(0);
            point.y = ReadY(0);
        }
        geom = point;
    }
    else if ( chProps & SP_ISSINGLELINESEGMENT )
    {
        // single line segment with 2 points
        nNumPoints = 2;
        nPointPos = 6;

        if (nLen < 6 + 2 * nPointSize)
        {
            throw sqlserver_geometry_parser_exception("not enough data, nLen < 6 + 2 * nPointSize");
        }

        mapnik::geometry::line_string<double> line;

        if (colType == Geography)
        {
            line.emplace_back(ReadY(0), ReadX(0));
            line.emplace_back(ReadY(1), ReadX(1));
        }
        else
        {
            line.emplace_back(ReadX(0), ReadY(0));
            line.emplace_back(ReadX(1), ReadY(1));
        }
        geom = line;
        
    }
    else
    {
        // complex geometries
        nNumPoints = ReadInt32(6);

        if ( nNumPoints <= 0 )
        {
            throw sqlserver_geometry_parser_exception("negative number of points, nNumPoints <= 0");
        }

        // position of the point array
        nPointPos = 10;

        // position of the figures
        nFigurePos = nPointPos + nPointSize * nNumPoints + 4;
        
        if (nLen < nFigurePos)
        {
            throw sqlserver_geometry_parser_exception("not enough data, nLen < nFigurePos");
        }

        nNumFigures = ReadInt32(nFigurePos - 4);

        if ( nNumFigures <= 0 )
        {
            throw sqlserver_geometry_parser_exception("negative number of figures, nNumFigures <= 0");
        }
        
        // position of the shapes
        nShapePos = nFigurePos + 5 * nNumFigures + 4;

        if (nLen < nShapePos)
        {
            throw sqlserver_geometry_parser_exception("not enough data, nLen < nShapePos");
        }

        nNumShapes = ReadInt32(nShapePos - 4);

        if (nLen < nShapePos + 9 * nNumShapes)
        {
            throw sqlserver_geometry_parser_exception("not enough data, nLen < nShapePos + 9 * nNumShapes");
        }

        if ( nNumShapes <= 0 )
        {
            throw sqlserver_geometry_parser_exception("negative number of shapes, nNumShapes <= 0");
        }

        // pick up the root shape
        if ( ParentOffset(0) != 0xFFFFFFFF)
        {
            throw sqlserver_geometry_parser_exception("corrupt data, ParentOffset(0) != 0xFFFFFFFF");
        }

        // determine the shape type
        switch (ShapeType(0))
        {
        case ST_POINT:
            geom = ReadPoint(0);
            break;
        case ST_LINESTRING:
            geom = ReadLineString(0);
            break;
        case ST_POLYGON:
            geom = ReadPolygon(0);
            break;
        case ST_MULTIPOINT:
            geom = ReadMultiPoint(0);
            break;
        case ST_MULTILINESTRING:
            geom = ReadMultiLineString(0);
            break;
        case ST_MULTIPOLYGON:
            geom = ReadMultiPolygon(0);
            break;
        case ST_GEOMETRYCOLLECTION:
            geom = ReadGeometryCollection(0);
            break;
        default:
            throw sqlserver_geometry_parser_exception("unsupported geometry type");
        }
    }

    return geom;
}