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			434 lines
		
	
	
		
			19 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			434 lines
		
	
	
		
			19 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
| ///////////////////////////////////////////////////////////////////////////////////
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| // Copyright (C) 2021 Jon Beniston, M7RCE                                        //
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| //                                                                               //
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| // This program is free software; you can redistribute it and/or modify          //
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| // it under the terms of the GNU General Public License as published by          //
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| // the Free Software Foundation as version 3 of the License, or                  //
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| // (at your option) any later version.                                           //
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| //                                                                               //
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| // This program is distributed in the hope that it will be useful,               //
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| // but WITHOUT ANY WARRANTY; without even the implied warranty of                //
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| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the                  //
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| // GNU General Public License V3 for more details.                               //
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| //                                                                               //
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| // You should have received a copy of the GNU General Public License             //
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| // along with this program. If not, see <http://www.gnu.org/licenses/>.          //
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| ///////////////////////////////////////////////////////////////////////////////////
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| 
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| #ifndef INCLUDE_OPENAIP_H
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| #define INCLUDE_OPENAIP_H
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| 
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| #include <QString>
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| #include <QFile>
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| #include <QByteArray>
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| #include <QHash>
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| #include <QList>
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| #include <QDebug>
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| #include <QXmlStreamReader>
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| #include <QPointF>
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| 
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| #include <stdio.h>
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| #include <string.h>
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| 
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| #include "export.h"
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| 
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| #include "util/units.h"
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| #include "util/httpdownloadmanager.h"
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| 
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| // Server is moving, use new URL and .xml extension instead of .aip
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| //#define OPENAIP_AIRSPACE_URL    "https://www.openaip.net/customer_export_akfshb9237tgwiuvb4tgiwbf/%1_asp.aip"
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| //#define OPENAIP_NAVAIDS_URL     "https://www.openaip.net/customer_export_akfshb9237tgwiuvb4tgiwbf/%1_nav.aip"
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| #define OPENAIP_AIRSPACE_URL    "https://storage.googleapis.com/29f98e10-a489-4c82-ae5e-489dbcd4912f/%1_asp.xml"
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| #define OPENAIP_NAVAIDS_URL     "https://storage.googleapis.com/29f98e10-a489-4c82-ae5e-489dbcd4912f/%1_nav.xml"
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| 
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| struct SDRBASE_API Airspace {
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| 
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|     struct AltLimit {
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|         QString m_reference;    // STD, MSL
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|         int m_alt;              // Altitude
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|         QString m_altUnit;      // FL (Flight level) or F (Feet)
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|     };
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| 
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|     QString m_category;         // A-G, GLIDING, DANGER, PROHIBITED, TMZ
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|     int m_id;
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|     QString m_country;          // GB
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|     QString m_name;             // BIGGIN HILL ATZ 129.405    - TODO: Extract frequency so we can tune to it
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|     AltLimit m_top;             // Top of airspace
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|     AltLimit m_bottom;          // Bottom of airspace
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|     QVector<QPointF> m_polygon;
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|     QPointF m_center;           // Center of polygon
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|     QPointF m_position;         // Position for text (not at the center, otherwise it will clash with airport)
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| 
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|     void calculatePosition()
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|     {
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|         qreal minX, maxX;
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|         qreal minY, maxY;
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|         if (m_polygon.size() > 0)
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|         {
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|             minX = maxX = m_polygon[0].x();
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|             minY = maxY = m_polygon[0].y();
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|             for (int i = 1; i < m_polygon.size(); i++)
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|             {
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|                 qreal x = m_polygon[i].x();
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|                 qreal y = m_polygon[i].y();
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|                 minX = std::min(minX, x);
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|                 maxX = std::max(maxX, x);
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|                 minY = std::min(minY, y);
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|                 maxY = std::max(maxY, y);
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|             }
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|             m_center.setX(minX + (maxX - minX) / 2.0);
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|             m_center.setY(minY + (maxY - minY) * 2.0);
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|             m_position.setX(minX + (maxX - minX) / 2.0);
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|             m_position.setY(minY + (maxY - minY) * 3.0 / 4.0);
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|         }
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|     }
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| 
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|     QString getAlt(const AltLimit *altlimit) const
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|     {
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|         // Format on UK charts
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|         if (altlimit->m_alt == 0) {
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|             return "SFC"; // Surface
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|         } if (altlimit->m_altUnit == "FL") {
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|             return QString("FL%1").arg(altlimit->m_alt);
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|         } else if (altlimit->m_altUnit == "F") {
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|             return QString("%1'").arg(altlimit->m_alt);
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|         } else {
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|             return QString("%1 %2").arg(altlimit->m_alt).arg(altlimit->m_altUnit);
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|         }
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|     }
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| 
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|     double heightInMetres(const AltLimit *altlimit) const
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|     {
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|         if (altlimit->m_altUnit == "FL") {
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|             return Units::feetToMetres(altlimit->m_alt * 100);
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|         } else if (altlimit->m_altUnit == "F") {
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|             return Units::feetToMetres(altlimit->m_alt);
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|         } else {
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|             return altlimit->m_alt;
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|         }
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|     }
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| 
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|     double topHeightInMetres() const
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|     {
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|         return heightInMetres(&m_top);
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|     }
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| 
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|     double bottomHeightInMetres() const
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|     {
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|         return heightInMetres(&m_bottom);
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|     }
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| 
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|     // Read OpenAIP XML file
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|     static QList<Airspace *> readXML(const QString &filename)
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|     {
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|         QList<Airspace *> airspaces;
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|         QFile file(filename);
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|         if (file.open(QIODevice::ReadOnly | QIODevice::Text))
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|         {
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|             QXmlStreamReader xmlReader(&file);
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| 
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|             while(!xmlReader.atEnd() && !xmlReader.hasError())
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|             {
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|                 if (xmlReader.readNextStartElement())
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|                 {
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|                     if (xmlReader.name() == "ASP")
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|                     {
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|                         Airspace *airspace = new Airspace();
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| 
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|                         airspace->m_category = xmlReader.attributes().value("CATEGORY").toString();
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| 
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|                         while(xmlReader.readNextStartElement())
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|                         {
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|                             if (xmlReader.name() == QLatin1String("ID"))
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|                             {
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|                                 airspace->m_id = xmlReader.readElementText().toInt();
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|                             }
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|                             else if (xmlReader.name() == QLatin1String("COUNTRY"))
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|                             {
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|                                 airspace->m_country = xmlReader.readElementText();
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|                             }
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|                             else if (xmlReader.name() == QLatin1String("NAME"))
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|                             {
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|                                 airspace->m_name = xmlReader.readElementText();
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|                             }
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|                             else if (xmlReader.name() == QLatin1String("ALTLIMIT_TOP"))
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|                             {
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|                                 while(xmlReader.readNextStartElement())
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|                                 {
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|                                     airspace->m_top.m_reference = xmlReader.attributes().value("REFERENCE").toString();
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|                                     airspace->m_top.m_altUnit = xmlReader.attributes().value("UNIT").toString();
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|                                     if (xmlReader.name() == QLatin1String("ALT"))
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|                                     {
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|                                         airspace->m_top.m_alt = xmlReader.readElementText().toInt();
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|                                     }
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|                                     else
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|                                     {
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|                                         xmlReader.skipCurrentElement();
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|                                     }
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|                                 }
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|                             }
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|                             else if (xmlReader.name() == QLatin1String("ALTLIMIT_BOTTOM"))
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|                             {
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|                                 while(xmlReader.readNextStartElement())
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|                                 {
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|                                     airspace->m_bottom.m_reference = xmlReader.attributes().value("REFERENCE").toString();
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|                                     airspace->m_bottom.m_altUnit = xmlReader.attributes().value("UNIT").toString();
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|                                     if (xmlReader.name() == QLatin1String("ALT"))
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|                                     {
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|                                         airspace->m_bottom.m_alt = xmlReader.readElementText().toInt();
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|                                     }
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|                                     else
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|                                     {
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|                                         xmlReader.skipCurrentElement();
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|                                     }
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|                                 }
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|                             }
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|                             else if (xmlReader.name() == QLatin1String("GEOMETRY"))
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|                             {
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|                                 while(xmlReader.readNextStartElement())
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|                                 {
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|                                     if (xmlReader.name() == QLatin1String("POLYGON"))
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|                                     {
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|                                         QString pointsString = xmlReader.readElementText();
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|                                         QStringList points = pointsString.split(",");
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|                                         for (const auto& ps : points)
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|                                         {
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|                                             QStringList split = ps.trimmed().split(" ");
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|                                             if (split.size() == 2)
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|                                             {
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|                                                 QPointF pf(split[0].toDouble(), split[1].toDouble());
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|                                                 airspace->m_polygon.append(pf);
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|                                             }
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|                                             else
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|                                             {
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|                                                 qDebug() << "Airspace::readXML - Unexpected polygon point format: " << ps;
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|                                             }
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|                                         }
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|                                     }
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|                                     else
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|                                     {
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|                                         xmlReader.skipCurrentElement();
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|                                     }
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|                                 }
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|                             }
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|                             else
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|                             {
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|                                xmlReader.skipCurrentElement();
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|                             }
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|                         }
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| 
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|                         airspace->calculatePosition();
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|                         //qDebug() << "Adding airspace: " << airspace->m_name << " " << airspace->m_category;
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|                         airspaces.append(airspace);
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|                     }
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|                 }
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|             }
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| 
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|             file.close();
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|         }
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|         else
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|         {
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|             // Don't warn, as many countries don't have files
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|             //qDebug() << "Airspace::readXML: Could not open " << filename << " for reading.";
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|         }
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|         return airspaces;
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|     }
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| 
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| };
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| 
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| struct SDRBASE_API NavAid {
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| 
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|     QString m_ident;            // 2 or 3 character ident
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|     QString m_type;             // NDB, VOR, VOR-DME or VORTAC
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|     QString m_name;
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|     float m_latitude;
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|     float m_longitude;
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|     float m_elevation;
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|     float m_frequencykHz;
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|     QString m_channel;
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|     int m_range;                // Nautical miles
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|     float m_magneticDeclination;
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|     bool m_alignedTrueNorth;    // Is the VOR aligned to true North, rather than magnetic (may be the case at high latitudes)
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| 
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|     int getRangeMetres() const
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|     {
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|         return Units::nauticalMilesToIntegerMetres((float)m_range);
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|     }
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| 
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|     // OpenAIP XML file
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|     static QList<NavAid *> readXML(const QString &filename)
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|     {
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|         QList<NavAid *> navAidInfo;
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|         QFile file(filename);
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|         if (file.open(QIODevice::ReadOnly | QIODevice::Text))
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|         {
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|             QXmlStreamReader xmlReader(&file);
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| 
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|             while(!xmlReader.atEnd() && !xmlReader.hasError())
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|             {
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|                 if (xmlReader.readNextStartElement())
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|                 {
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|                     if (xmlReader.name() == "NAVAID")
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|                     {
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|                         QStringRef typeRef = xmlReader.attributes().value("TYPE");
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|                         if ((typeRef == QLatin1String("NDB"))
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|                             || (typeRef == QLatin1String("DME"))
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|                             || (typeRef == QLatin1String("VOR"))
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|                             || (typeRef== QLatin1String("VOR-DME"))
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|                             || (typeRef == QLatin1String("VORTAC")))
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|                         {
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|                             QString type = typeRef.toString();
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|                             QString name;
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|                             QString id;
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|                             float lat = 0.0f;
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|                             float lon = 0.0f;
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|                             float elevation = 0.0f;
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|                             float frequency = 0.0f;
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|                             QString channel;
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|                             int range = 25;
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|                             float declination = 0.0f;
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|                             bool alignedTrueNorth = false;
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|                             while(xmlReader.readNextStartElement())
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|                             {
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|                                 if (xmlReader.name() == QLatin1String("NAME"))
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|                                 {
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|                                     name = xmlReader.readElementText();
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|                                 }
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|                                 else if (xmlReader.name() == QLatin1String("ID"))
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|                                 {
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|                                     id = xmlReader.readElementText();
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|                                 }
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|                                 else if (xmlReader.name() == QLatin1String("GEOLOCATION"))
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|                                 {
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|                                     while(xmlReader.readNextStartElement())
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|                                     {
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|                                         if (xmlReader.name() == QLatin1String("LAT")) {
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|                                             lat = xmlReader.readElementText().toFloat();
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|                                         } else if (xmlReader.name() == QLatin1String("LON")) {
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|                                             lon = xmlReader.readElementText().toFloat();
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|                                         } else if (xmlReader.name() == QLatin1String("ELEV")) {
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|                                             elevation = xmlReader.readElementText().toFloat();
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|                                         } else {
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|                                             xmlReader.skipCurrentElement();
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|                                         }
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|                                     }
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|                                 }
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|                                 else if (xmlReader.name() == QLatin1String("RADIO"))
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|                                 {
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|                                     while(xmlReader.readNextStartElement())
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|                                     {
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|                                         if (xmlReader.name() == QLatin1String("FREQUENCY"))
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|                                         {
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|                                             if (type == "NDB") {
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|                                                 frequency = xmlReader.readElementText().toFloat();
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|                                             } else {
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|                                                 frequency = xmlReader.readElementText().toFloat() * 1000.0;
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|                                             }
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|                                         } else if (xmlReader.name() == QLatin1String("CHANNEL")) {
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|                                             channel = xmlReader.readElementText();
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|                                         } else {
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|                                             xmlReader.skipCurrentElement();
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|                                         }
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|                                     }
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|                                 }
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|                                 else if (xmlReader.name() == QLatin1String("PARAMS"))
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|                                 {
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|                                     while(xmlReader.readNextStartElement())
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|                                     {
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|                                         if (xmlReader.name() == QLatin1String("RANGE")) {
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|                                             range = xmlReader.readElementText().toInt();
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|                                         } else if (xmlReader.name() == QLatin1String("DECLINATION")) {
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|                                             declination = xmlReader.readElementText().toFloat();
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|                                         } else if (xmlReader.name() == QLatin1String("ALIGNEDTOTRUENORTH")) {
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|                                             alignedTrueNorth = xmlReader.readElementText() == "TRUE";
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|                                         } else {
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|                                             xmlReader.skipCurrentElement();
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|                                         }
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|                                     }
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|                                 }
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|                                 else
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|                                 {
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|                                    xmlReader.skipCurrentElement();
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|                                 }
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|                             }
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|                             NavAid *navAid = new NavAid();
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|                             navAid->m_ident = id;
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|                             // Check idents conform to our filtering rules
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|                             if (navAid->m_ident.size() < 2) {
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|                                 qDebug() << "NavAid::readXML: Ident less than 2 characters: " << navAid->m_ident;
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|                             } else if (navAid->m_ident.size() > 3) {
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|                                 qDebug() << "NavAid::readXML: Ident greater than 3 characters: " << navAid->m_ident;
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|                             }
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|                             navAid->m_type = type;
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|                             navAid->m_name = name;
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|                             navAid->m_frequencykHz = frequency;
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|                             navAid->m_channel = channel;
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|                             navAid->m_latitude = lat;
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|                             navAid->m_longitude = lon;
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|                             navAid->m_elevation = elevation;
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|                             navAid->m_range = range;
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|                             navAid->m_magneticDeclination = declination;
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|                             navAid->m_alignedTrueNorth = alignedTrueNorth;
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|                             navAidInfo.append(navAid);
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|                         }
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|                     }
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|                 }
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|             }
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| 
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|             file.close();
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|         }
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|         else
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|         {
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|             // Don't warn, as many countries don't have files
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|             //qDebug() << "NavAid::readNavAidsXML: Could not open " << filename << " for reading.";
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|         }
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|         return navAidInfo;
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|     }
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| 
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| };
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| 
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| class SDRBASE_API OpenAIP : public QObject {
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|     Q_OBJECT
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| 
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| public:
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|     OpenAIP(QObject* parent = nullptr);
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|     ~OpenAIP();
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| 
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|     static const QStringList m_countryCodes;
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| 
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|     static QList<Airspace *> readAirspaces();
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|     static QList<Airspace *> readAirspaces(const QString& countryCode);
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|     static QList<NavAid *> readNavAids();
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|     static QList<NavAid *> readNavAids(const QString& countryCode);
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| 
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|     void downloadAirspaces();
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|     void downloadNavAids();
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| 
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| private:
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|     HttpDownloadManager m_dlm;
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|     int m_countryIndex;
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| 
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|     static QString getDataDir();
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|     static QString getAirspaceFilename(int i);
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|     static QString getAirspaceFilename(const QString& countryCode);
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|     static QString getAirspaceURL(int i);
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|     static QString getNavAidsFilename(int i);
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|     static QString getNavAidsFilename(const QString& countryCode);
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|     static QString getNavAidsURL(int i);
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| 
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|     void downloadAirspace();
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|     void downloadNavAid();
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| 
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| public slots:
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|     void downloadFinished(const QString& filename, bool success);
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| 
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| signals:
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|     void downloadingURL(const QString& url);
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|     void downloadError(const QString& error);
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|     void downloadAirspaceFinished();
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|     void downloadNavAidsFinished();
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| 
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| };
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| 
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| #endif // INCLUDE_OPENAIP_H
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