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78361ef8e3
QStringRef is gone in Qt6 and mostly replaced by QStringView. The one major difference is that direct comparisons with string literals are no longer possible. Thanks to Thiago Macieira for helping me avoid more conditional compilation here. Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
89 lines
3.4 KiB
C++
89 lines
3.4 KiB
C++
// SPDX-License-Identifier: GPL-2.0
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#include "core/parse-gpx.h"
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#include "core/subsurface-time.h"
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#include "core/namecmp.h"
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#include <QFile>
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#include <QXmlStreamReader>
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// Find the coordinates at the time specified in coords.start_dive
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// by searching the gpx file "fileName". Here is a typical trkpt element in GPX:
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// <trkpt lat="-26.84" lon="32.88"><ele>-53.7</ele><time>2017-08-06T04:56:42Z</time></trkpt>
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int getCoordsFromGPXFile(struct dive_coords *coords, QString fileName)
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{
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struct tm tm1;
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time_t trkpt_time = 0;
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time_t divetime;
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int64_t time_offset = coords->settingsDiff_offset + coords->timeZone_offset;
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double lon = 0, lat = 0;
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int line = 0;
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bool first_line = true;
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bool found = false;
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bool trkpt_found = false;
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divetime = coords->start_dive;
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QFile gpxFile;
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gpxFile.setFileName(fileName);
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if (!gpxFile.open(QIODevice::ReadOnly | QIODevice::Text)) {
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QByteArray local8bitBAString1 = fileName.toLocal8Bit();
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char *fname = local8bitBAString1.data(); // convert QString to a C string fileName
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fprintf(stderr, "GPS file open error: file name = %s\n", fname);
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return 1;
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}
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#ifdef GPSDEBUG
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struct tm time; // decode the time of start of dive:
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utc_mkdate(divetime, &time);
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int dyr,dmon,dday,dhr,dmin;
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dyr = time.tm_year;
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dmon = time.tm_mon;
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dday = time.tm_mday;
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dhr = time.tm_hour;
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dmin = time.tm_min;
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#endif
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QXmlStreamReader gpxReader(&gpxFile);
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while (!gpxReader.atEnd()) {
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gpxReader.readNext();
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if (gpxReader.isStartElement()) {
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if (nameCmp(gpxReader, "trkpt") == 0) {
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trkpt_found = true;
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line++;
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foreach (const QXmlStreamAttribute &attr, gpxReader.attributes()) {
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if (attr.name().toString() == QLatin1String("lat"))
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lat = attr.value().toString().toDouble();
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else if (attr.name().toString() == QLatin1String("lon"))
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lon = attr.value().toString().toDouble();
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}
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}
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if (nameCmp(gpxReader, "time") == 0 && trkpt_found) { // Ignore the <time> element in the GPX file header
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QString dateTimeString = gpxReader.readElementText();
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bool ok;
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tm1.tm_year = dateTimeString.left(4).toInt(&ok, 10); // Extract the date/time components:
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tm1.tm_mon = dateTimeString.mid(5,2).toInt(&ok,10) - 1;
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tm1.tm_mday = dateTimeString.mid(8,2).toInt(&ok,10);
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tm1.tm_hour = dateTimeString.mid(11,2).toInt(&ok,10);
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tm1.tm_min = dateTimeString.mid(14,2).toInt(&ok,10);
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tm1.tm_sec = dateTimeString.mid(17,2).toInt(&ok,10);
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trkpt_time = utc_mktime(&tm1) + time_offset;
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if (first_line) {
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first_line = false;
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coords->start_track = trkpt_time; // Local time of start of GPS track
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}
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if (trkpt_time >= divetime && found == false) { // This GPS local time corresponds to the start time of the dive
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coords->lon = lon; // save the coordinates
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coords->lat = lat;
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found = true;
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}
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#ifdef GPSDEBUG
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utc_mkdate(trkpt_time, &time); // print coordinates and time of each trkpt element of the GPX file as well as dive start time
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fprintf(stderr, " %02d: lat=%f lon=%f timestamp=%ld (%ld) %02d/%02d/%02d %02d:%02d dt=%ld %02d/%02d/%02d %02d:%02d\n", line, lat,
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lon, trkpt_time, time_offset, time.tm_year, time.tm_mon+1, time.tm_mday, time.tm_hour, time.tm_min, divetime, dyr, dmon+1, dday,dhr, dmin);
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#endif
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}
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}
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} // while !at.End() // This loop executes until EOF causes a break out of the loop
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coords->end_track = trkpt_time; // This is the local time of the end of the GPS track
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gpxFile.close();
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return 0;
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}
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