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sdrangel/sdrbase/util/ourairportsdb.cpp

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///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2023 Daniele Forsi <iu5hkx@gmail.com> //
// Copyright (C) 2023 Jon Beniston, M7RCE <jon@beniston.com> //
// //
// This program is free software; you can redistribute it and/or modify //
// it under the terms of the GNU General Public License as published by //
// the Free Software Foundation as version 3 of the License, or //
// (at your option) any later version. //
// //
// This program is distributed in the hope that it will be useful, //
// but WITHOUT ANY WARRANTY; without even the implied warranty of //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
// GNU General Public License V3 for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
///////////////////////////////////////////////////////////////////////////////////
#include <QFile>
#include <QFileInfo>
#include <QByteArray>
#include <QList>
#include <QDebug>
#include <QLocale>
#include <QStandardPaths>
#include "util/ourairportsdb.h"
QMutex OurAirportsDB::m_mutex;
QSharedPointer<QHash<int, AirportInformation *>> OurAirportsDB::m_airportsById;
QSharedPointer<QHash<QString, AirportInformation *>> OurAirportsDB::m_airportsByIdent;
QDateTime OurAirportsDB::m_modifiedDateTime;
AirportInformation::~AirportInformation()
{
qDeleteAll(m_frequencies);
}
QString AirportInformation::getImageName() const
{
switch (m_type)
{
case AirportType::Large:
return "airport_large.png";
case AirportType::Medium:
return "airport_medium.png";
case AirportType::Heliport:
return "heliport.png";
default:
return "airport_small.png";
}
}
OurAirportsDB::OurAirportsDB(QObject *parent) :
QObject(parent)
{
connect(&m_dlm, &HttpDownloadManager::downloadComplete, this, &OurAirportsDB::downloadFinished);
}
OurAirportsDB::~OurAirportsDB()
{
disconnect(&m_dlm, &HttpDownloadManager::downloadComplete, this, &OurAirportsDB::downloadFinished);
}
void OurAirportsDB::downloadAirportInformation()
{
// Download airport database
QString urlString = AIRPORTS_URL;
QUrl dbURL(urlString);
qDebug() << "OurAirportsDB::downloadAirportInformation: Downloading " << urlString;
emit downloadingURL(urlString);
QNetworkReply *reply = m_dlm.download(dbURL, OurAirportsDB::getAirportDBFilename());
connect(reply, &QNetworkReply::downloadProgress, this, [this](qint64 bytesRead, qint64 totalBytes) {
emit downloadProgress(bytesRead, totalBytes);
});
}
void OurAirportsDB::downloadFinished(const QString& filename, bool success)
{
if (!success)
{
qWarning() << "OurAirportsDB::downloadFinished: Failed to download: " << filename;
emit downloadError(QString("Failed to download: %1").arg(filename));
}
else if (filename == OurAirportsDB::getAirportDBFilename())
{
// Now download airport frequencies
QString urlString = AIRPORT_FREQUENCIES_URL;
QUrl dbURL(urlString);
qDebug() << "OurAirportsDB::downloadFinished: Downloading " << urlString;
emit downloadingURL(urlString);
QNetworkReply *reply = m_dlm.download(dbURL, OurAirportsDB::getAirportFrequenciesDBFilename());
connect(reply, &QNetworkReply::downloadProgress, this, [this](qint64 bytesRead, qint64 totalBytes) {
emit downloadProgress(bytesRead, totalBytes);
});
}
else if (filename == OurAirportsDB::getAirportFrequenciesDBFilename())
{
emit downloadAirportInformationFinished();
}
else
{
qDebug() << "OurAirportsDB::downloadFinished: Unexpected filename: " << filename;
emit downloadError(QString("Unexpected filename: %1").arg(filename));
}
}
QSharedPointer<const QHash<int, AirportInformation *>> OurAirportsDB::getAirportsById()
{
QMutexLocker locker(&m_mutex);
readDB();
return m_airportsById;
}
QSharedPointer<const QHash<QString, AirportInformation *>> OurAirportsDB::getAirportsByIdent()
{
QMutexLocker locker(&m_mutex);
readDB();
return m_airportsByIdent;
}
void OurAirportsDB::readDB()
{
QFileInfo airportDBFileInfo(getAirportDBFilename());
QDateTime airportDBModifiedDateTime = airportDBFileInfo.lastModified();
if (!m_airportsById || (airportDBModifiedDateTime > m_modifiedDateTime))
{
// Using shared pointer, so old object, if it exists, will be deleted, when no longer user
m_airportsById = QSharedPointer<QHash<int, AirportInformation *>>(OurAirportsDB::readAirportsDB(getAirportDBFilename()));
if (m_airportsById != nullptr)
{
OurAirportsDB::readFrequenciesDB(getAirportFrequenciesDBFilename(), m_airportsById.get());
m_airportsByIdent = QSharedPointer<QHash<QString, AirportInformation *>>(identHash(m_airportsById.get()));
}
m_modifiedDateTime = airportDBModifiedDateTime;
}
}
QString OurAirportsDB::getDataDir()
{
// Get directory to store app data in
QStringList locations = QStandardPaths::standardLocations(QStandardPaths::AppDataLocation);
// First dir is writable
return locations[0];
}
QString OurAirportsDB::getAirportDBFilename()
{
return getDataDir() + "/airportDatabase.csv";
}
QString OurAirportsDB::getAirportFrequenciesDBFilename()
{
return getDataDir() + "/airportFrequenciesDatabase.csv";
}
QString OurAirportsDB::trimQuotes(const QString s)
{
if (s.startsWith('\"') && s.endsWith('\"')) {
return s.mid(1, s.size() - 2);
} else {
return s;
}
}
// Read OurAirport's airport CSV file
// See comments for readOSNDB
QHash<int, AirportInformation *> *OurAirportsDB::readAirportsDB(const QString &filename)
{
int cnt = 0;
QHash<int, AirportInformation *> *airportInfo = nullptr;
// Column numbers used for the data as of 2020/10/28
int idCol = 0;
int identCol = 1;
int typeCol = 2;
int nameCol = 3;
int latitudeCol = 4;
int longitudeCol = 5;
int elevationCol = 6;
qDebug() << "OurAirportsDB::readAirportsDB: " << filename;
FILE *file;
QByteArray utfFilename = filename.toUtf8();
QLocale cLocale(QLocale::C);
if ((file = fopen(utfFilename.constData(), "r")) != NULL)
{
char row[2048];
if (fgets(row, sizeof(row), file))
{
airportInfo = new QHash<int, AirportInformation *>();
airportInfo->reserve(70000);
// Read header
int idx = 0;
char *p = strtok(row, ",");
while (p != NULL)
{
if (!strcmp(p, "id"))
idCol = idx;
else if (!strcmp(p, "ident"))
identCol = idx;
else if (!strcmp(p, "type"))
typeCol = idx;
else if (!strcmp(p, "name"))
nameCol = idx;
else if (!strcmp(p, "latitude_deg"))
latitudeCol = idx;
else if (!strcmp(p, "longitude_deg"))
longitudeCol = idx;
else if (!strcmp(p, "elevation_ft"))
elevationCol = idx;
p = strtok(NULL, ",");
idx++;
}
// Read data
while (fgets(row, sizeof(row), file))
{
int id = 0;
char *idString = NULL;
char *ident = NULL;
size_t identLen = 0;
char *type = NULL;
size_t typeLen = 0;
char *name = NULL;
size_t nameLen = 0;
float latitude = 0.0f;
char *latitudeString = NULL;
size_t latitudeLen = 0;
float longitude = 0.0f;
char *longitudeString = NULL;
size_t longitudeLen = 0;
float elevation = 0.0f;
char *elevationString = NULL;
size_t elevationLen = 0;
p = strtok(row, ",");
idx = 0;
while (p != NULL)
{
// Read strings, stripping quotes
if (idx == idCol)
{
idString = p;
idString[strlen(idString)] = '\0';
id = strtol(idString, NULL, 10);
}
else if (idx == identCol)
{
ident = p+1;
identLen = strlen(ident)-1;
ident[identLen] = '\0';
}
else if (idx == typeCol)
{
type = p+1;
typeLen = strlen(type)-1;
type[typeLen] = '\0';
}
else if (idx == nameCol)
{
name = p+1;
nameLen = strlen(name)-1;
name[nameLen] = '\0';
}
else if (idx == latitudeCol)
{
latitudeString = p;
latitudeLen = strlen(latitudeString)-1;
latitudeString[latitudeLen] = '\0';
latitude = cLocale.toFloat(latitudeString);
}
else if (idx == longitudeCol)
{
longitudeString = p;
longitudeLen = strlen(longitudeString)-1;
longitudeString[longitudeLen] = '\0';
longitude = cLocale.toFloat(longitudeString);
}
else if (idx == elevationCol)
{
elevationString = p;
elevationLen = strlen(elevationString)-1;
elevationString[elevationLen] = '\0';
elevation = cLocale.toFloat(elevationString);
}
p = strtok(NULL, ",");
idx++;
}
// Only create the entry if we have some interesting data
if (((latitude != 0.0f) || (longitude != 0.0f)) && (type && strcmp(type, "closed")))
{
AirportInformation *airport = new AirportInformation();
airport->m_id = id;
airport->m_ident = QString(ident);
if (!strcmp(type, "small_airport")) {
airport->m_type = AirportInformation::AirportType::Small;
} else if (!strcmp(type, "medium_airport")) {
airport->m_type = AirportInformation::AirportType::Medium;
} else if (!strcmp(type, "large_airport")) {
airport->m_type = AirportInformation::AirportType::Large;
} else if (!strcmp(type, "heliport")) {
airport->m_type = AirportInformation::AirportType::Heliport;
}
airport->m_name = QString(name);
airport->m_latitude = latitude;
airport->m_longitude = longitude;
airport->m_elevation = elevation;
airportInfo->insert(id, airport);
cnt++;
}
}
}
fclose(file);
}
else
qDebug() << "OurAirportsDB::readAirportsDB: Failed to open " << filename;
qDebug() << "OurAirportsDB::readAirportsDB: Read " << cnt << " airports";
return airportInfo;
}
// Create hash table using ICAO identifier as key
QHash<QString, AirportInformation *> *OurAirportsDB::identHash(QHash<int, AirportInformation *> *in)
{
QHash<QString, AirportInformation *> *out = new QHash<QString, AirportInformation *>();
QHashIterator<int, AirportInformation *> i(*in);
while (i.hasNext())
{
i.next();
AirportInformation *info = i.value();
out->insert(info->m_ident, info);
}
return out;
}
// Read OurAirport's airport frequencies CSV file
bool OurAirportsDB::readFrequenciesDB(const QString &filename, QHash<int, AirportInformation *> *airportInfo)
{
int cnt = 0;
// Column numbers used for the data as of 2020/10/28
int airportRefCol = 1;
int typeCol = 3;
int descriptionCol = 4;
int frequencyCol = 5;
qDebug() << "OurAirportsDB::readFrequenciesDB: " << filename;
QFile file(filename);
if (file.open(QIODevice::ReadOnly))
{
QList<QByteArray> colNames;
int idx;
// Read header
if (!file.atEnd())
{
QByteArray row = file.readLine().trimmed();
colNames = row.split(',');
// Work out which columns the data is in, based on the headers
idx = colNames.indexOf("airport_ref");
if (idx >= 0)
airportRefCol = idx;
idx = colNames.indexOf("type");
if (idx >= 0)
typeCol = idx;
idx = colNames.indexOf("description");
if (idx >= 0)
descriptionCol = idx;
idx = colNames.indexOf("frequency_mhz");
if (idx >= 0)
frequencyCol = idx;
}
// Read data
while (!file.atEnd())
{
QByteArray row = file.readLine();
QList<QByteArray> cols = row.split(',');
bool ok = false;
int airportRef = cols[airportRefCol].toInt(&ok, 10);
if (ok)
{
if (airportInfo->contains(airportRef))
{
QString type = trimQuotes(cols[typeCol]);
QString description = trimQuotes(cols[descriptionCol]);
float frequency = cols[frequencyCol].toFloat();
AirportInformation::FrequencyInformation *frequencyInfo = new AirportInformation::FrequencyInformation();
frequencyInfo->m_type = type;
frequencyInfo->m_description = description;
frequencyInfo->m_frequency = frequency;
airportInfo->value(airportRef)->m_frequencies.append(frequencyInfo);
cnt++;
}
}
}
file.close();
}
else
{
qDebug() << "Failed to open " << filename << " " << file.errorString();
return false;
}
qDebug() << "OurAirportsDB::readFrequenciesDB: - read " << cnt << " airports";
return true;
}
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