kopia lustrzana https://github.com/f4exb/sdrangel
142 wiersze
4.6 KiB
C++
142 wiersze
4.6 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2024 Jon Beniston, M7RCE <jon@beniston.com> //
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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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#include <QDebug>
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#include "waypoints.h"
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#include "csv.h"
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QHash<QString, Waypoint *> *Waypoint::readCSV(const QString &filename)
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{
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QHash<QString, Waypoint *> *waypoints = new QHash<QString, Waypoint *>();
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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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QTextStream in(&file);
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QString error;
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QStringList cols;
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while(CSV::readRow(in, &cols))
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{
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Waypoint *waypoint = new Waypoint();
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waypoint->m_name = cols[0];
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waypoint->m_latitude = cols[1].toFloat();
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waypoint->m_longitude = cols[2].toFloat();
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waypoints->insert(waypoint->m_name, waypoint);
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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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qDebug() << "Waypoint::readCSV: Could not open " << filename << " for reading.";
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}
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return waypoints;
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}
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QSharedPointer<QHash<QString, Waypoint *>> Waypoints::m_waypoints;
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QDateTime Waypoints::m_waypointsModifiedDateTime;
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Waypoints::Waypoints(QObject *parent) :
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QObject(parent)
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{
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connect(&m_dlm, &HttpDownloadManager::downloadComplete, this, &Waypoints::downloadFinished);
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}
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Waypoints::~Waypoints()
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{
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disconnect(&m_dlm, &HttpDownloadManager::downloadComplete, this, &Waypoints::downloadFinished);
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}
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QString Waypoints::getDataDir()
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{
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// Get directory to store app data in
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QStringList locations = QStandardPaths::standardLocations(QStandardPaths::AppDataLocation);
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// First dir is writable
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return locations[0];
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}
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QString Waypoints::getWaypointsFilename()
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{
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return getDataDir() + "/" + "waypoints.csv";
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}
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void Waypoints::downloadWaypoints()
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{
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QString filename = getWaypointsFilename();
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QString urlString = WAYPOINTS_URL;
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QUrl dbURL(urlString);
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qDebug() << "Waypoints::downloadWaypoints: Downloading " << urlString;
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emit downloadingURL(urlString);
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m_dlm.download(dbURL, filename);
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}
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void Waypoints::downloadFinished(const QString& filename, bool success)
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{
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if (!success) {
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qDebug() << "Waypoints::downloadFinished: Failed: " << filename;
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}
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if (filename == getWaypointsFilename())
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{
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emit downloadWaypointsFinished();
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}
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else
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{
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qDebug() << "Waypoints::downloadFinished: Unexpected filename: " << filename;
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emit downloadError(QString("Unexpected filename: %1").arg(filename));
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}
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}
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// Read waypoints
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QHash<QString, Waypoint *> *Waypoints::readWaypoints()
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{
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return Waypoint::readCSV(getWaypointsFilename());
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}
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QSharedPointer<const QHash<QString, Waypoint *>> Waypoints::getWaypoints()
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{
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QDateTime filesDateTime = getWaypointsModifiedDateTime();
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if (!m_waypoints || (filesDateTime > m_waypointsModifiedDateTime))
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{
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// Using shared pointer, so old object, if it exists, will be deleted, when no longer used
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m_waypoints = QSharedPointer<QHash<QString, Waypoint *>>(readWaypoints());
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m_waypointsModifiedDateTime = filesDateTime;
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}
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return m_waypoints;
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}
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// Gets the date and time the waypoint file was most recently modified
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QDateTime Waypoints::getWaypointsModifiedDateTime()
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{
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QFileInfo fileInfo(getWaypointsFilename());
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return fileInfo.lastModified();
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}
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// Find a waypoint by name
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const Waypoint *Waypoints::findWayPoint(const QString& name)
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{
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if (m_waypoints->contains(name)) {
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return m_waypoints->value(name);
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} else {
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return nullptr;
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}
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}
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