mirror of
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369 lines
16 KiB
C
369 lines
16 KiB
C
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///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2020 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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#ifndef INCLUDE_NAVAID_H
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#define INCLUDE_NAVAID_H
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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 <stdio.h>
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#include <string.h>
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#include "util/units.h"
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#include "../demodadsb/csv.h"
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#define OURAIRPORTS_NAVAIDS_URL "https://ourairports.com/data/navaids.csv"
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#define OPENAIP_NAVAIDS_URL "https://www.openaip.net/customer_export_akfshb9237tgwiuvb4tgiwbf/%1_nav.aip"
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struct NavAid {
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int m_id;
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QString m_ident; // 2 or 3 character ident
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QString m_type; // 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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int 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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static QString trimQuotes(const QString s)
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{
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if (s.startsWith('\"') && s.endsWith('\"'))
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return s.mid(1, s.size() - 2);
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else
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return s;
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}
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int getRangeMetres()
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{
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return Units::nauticalMilesToIntegerMetres((float)m_range);
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}
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// OpenAIP XML file
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static void readNavAidsXML(QHash<int, NavAid *> *navAidInfo, const QString &filename)
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{
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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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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("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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int identifier = 0;
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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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int frequency = 0;
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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("IDENTIFIER"))
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identifier = xmlReader.readElementText().toInt();
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else if (xmlReader.name() == QLatin1String("NAME"))
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name = xmlReader.readElementText();
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else if (xmlReader.name() == QLatin1String("ID"))
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id = xmlReader.readElementText();
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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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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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frequency = (int)(xmlReader.readElementText().toFloat() * 1000);
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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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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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else
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xmlReader.skipCurrentElement();
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}
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NavAid *vor = new NavAid();
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vor->m_id = identifier;
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vor->m_ident = id;
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// Check idents conform to our filtering rules
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if (vor->m_ident.size() < 2)
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qDebug() << "Warning: VOR Ident less than 2 characters: " << vor->m_ident;
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else if (vor->m_ident.size() > 3)
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qDebug() << "Warning: VOR Ident greater than 3 characters: " << vor->m_ident;
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vor->m_type = type;
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vor->m_name = name;
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vor->m_frequencykHz = frequency;
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vor->m_channel = channel;
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vor->m_latitude = lat;
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vor->m_longitude = lon;
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vor->m_elevation = elevation;
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vor->m_range = range;
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vor->m_magneticDeclination = declination;
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vor->m_alignedTrueNorth = alignedTrueNorth;
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navAidInfo->insert(identifier, vor);
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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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qDebug() << "NavAid::readNavAidsXML: Could not open " << filename << " for reading.";
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}
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// Read OurAirport's NavAids CSV file
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// See comments for readOSNDB
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static QHash<int, NavAid *> *readNavAidsDB(const QString &filename)
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{
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int cnt = 0;
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QHash<int, NavAid *> *navAidInfo = nullptr;
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// Column numbers used for the data as of 2020/10/28
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int idCol = 0;
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int identCol = 2;
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int typeCol = 4;
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int nameCol = 3;
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int frequencyCol = 5;
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int latitudeCol = 6;
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int longitudeCol = 7;
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int elevationCol = 8;
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int powerCol = 18;
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qDebug() << "NavAid::readNavAidsDB: " << filename;
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FILE *file;
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QByteArray utfFilename = filename.toUtf8();
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if ((file = fopen(utfFilename.constData(), "r")) != NULL)
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{
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char row[2048];
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if (fgets(row, sizeof(row), file))
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{
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navAidInfo = new QHash<int, NavAid *>();
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navAidInfo->reserve(15000);
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// Read header
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int idx = 0;
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char *p = strtok(row, ",");
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while (p != NULL)
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{
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if (!strcmp(p, "id"))
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idCol = idx;
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else if (!strcmp(p, "ident"))
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identCol = idx;
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else if (!strcmp(p, "type"))
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typeCol = idx;
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else if (!strcmp(p, "name"))
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nameCol = idx;
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else if (!strcmp(p, "frequency_khz"))
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frequencyCol = idx;
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else if (!strcmp(p, "latitude_deg"))
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latitudeCol = idx;
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else if (!strcmp(p, "longitude_deg"))
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longitudeCol = idx;
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else if (!strcmp(p, "elevation_ft"))
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elevationCol = idx;
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else if (!strcmp(p, "power"))
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powerCol = idx;
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p = strtok(NULL, ",");
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idx++;
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}
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// Read data
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while (fgets(row, sizeof(row), file))
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{
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int id = 0;
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char *idString = NULL;
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char *ident = NULL;
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size_t identLen = 0;
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char *type = NULL;
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size_t typeLen = 0;
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char *name = NULL;
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size_t nameLen = 0;
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char *frequencyString = NULL;
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int frequency;
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float latitude = 0.0f;
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char *latitudeString = NULL;
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size_t latitudeLen = 0;
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float longitude = 0.0f;
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char *longitudeString = NULL;
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size_t longitudeLen = 0;
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float elevation = 0.0f;
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char *elevationString = NULL;
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size_t elevationLen = 0;
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char *power = NULL;
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size_t powerLen = 0;
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char *q = row;
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idx = 0;
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while ((p = csvNext(&q)) != nullptr)
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{
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// Read strings, stripping quotes
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if (idx == idCol)
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{
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idString = p;
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idString[strlen(idString)] = '\0';
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id = strtol(idString, NULL, 10);
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}
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else if ((idx == identCol) && (p[0] == '\"'))
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{
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ident = p+1;
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identLen = strlen(ident)-1;
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ident[identLen] = '\0';
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}
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else if ((idx == typeCol) && (p[0] == '\"'))
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{
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type = p+1;
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typeLen = strlen(type)-1;
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type[typeLen] = '\0';
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}
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else if ((idx == nameCol) && (p[0] == '\"'))
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{
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name = p+1;
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nameLen = strlen(name)-1;
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name[nameLen] = '\0';
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}
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if (idx == frequencyCol)
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{
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frequencyString = p;
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frequencyString[strlen(frequencyString)] = '\0';
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frequency = strtol(frequencyString, NULL, 10);
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}
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else if (idx == latitudeCol)
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{
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latitudeString = p;
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latitudeLen = strlen(latitudeString)-1;
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latitudeString[latitudeLen] = '\0';
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latitude = atof(latitudeString);
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}
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else if (idx == longitudeCol)
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{
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longitudeString = p;
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longitudeLen = strlen(longitudeString)-1;
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longitudeString[longitudeLen] = '\0';
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longitude = atof(longitudeString);
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}
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else if (idx == elevationCol)
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{
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elevationString = p;
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elevationLen = strlen(elevationString)-1;
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elevationString[elevationLen] = '\0';
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elevation = atof(elevationString);
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}
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else if ((idx == powerCol) && (p[0] == '\"'))
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{
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power = p+1;
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powerLen = strlen(power)-1;
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power[powerLen] = '\0';
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}
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idx++;
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}
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// For now, we only want VORs
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if (type && !strncmp(type, "VOR", 3))
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{
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NavAid *vor = new NavAid();
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vor->m_id = id;
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vor->m_ident = QString(ident);
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// Check idents conform to our filtering rules
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if (vor->m_ident.size() < 2)
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qDebug() << "Warning: VOR Ident less than 2 characters: " << vor->m_ident;
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else if (vor->m_ident.size() > 3)
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qDebug() << "Warning: VOR Ident greater than 3 characters: " << vor->m_ident;
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vor->m_type = QString(type);
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vor->m_name = QString(name);
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vor->m_frequencykHz = frequency;
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vor->m_latitude = latitude;
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vor->m_longitude = longitude;
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vor->m_elevation = elevation;
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if (power && !strcmp(power, "HIGH"))
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vor->m_range = 100;
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else if (power && !strcmp(power, "MEDIUM"))
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vor->m_range = 40;
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else
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vor->m_range = 25;
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vor->m_magneticDeclination = 0.0f;
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vor->m_alignedTrueNorth = false;
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navAidInfo->insert(id, vor);
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cnt++;
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}
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}
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}
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fclose(file);
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}
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else
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qDebug() << "NavAid::readNavAidsDB: Failed to open " << filename;
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qDebug() << "NavAid::readNavAidsDB: Read " << cnt << " VORs";
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return navAidInfo;
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}
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};
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#endif // INCLUDE_NAVAID_H
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