Added support for IGC files

gpxsee.pro

@@ -68,7 +68,8 @@ HEADERS += src/config.h \
     src/path.h \
     src/assert.h \
     src/cadencegraph.h \
-    src/powergraph.h
+    src/powergraph.h \
+    src/igcparser.h
 SOURCES += src/main.cpp \
     src/gui.cpp \
     src/poi.cpp \
@@ -116,7 +117,8 @@ SOURCES += src/main.cpp \
     src/format.cpp \
     src/graph.cpp \
     src/cadencegraph.cpp \
-    src/powergraph.cpp
+    src/powergraph.cpp \
+    src/igcparser.cpp
 RESOURCES += gpxsee.qrc
 TRANSLATIONS = lang/gpxsee_cs.ts
 macx {

src/data.cpp

@@ -6,6 +6,7 @@
 #include "csvparser.h"
 #include "kmlparser.h"
 #include "fitparser.h"
+#include "igcparser.h"
 #include "data.h"
 
 
@@ -21,6 +22,8 @@ Data::Data() : _errorLine(0)
 	  _waypointData));
 	_parsers.insert("csv", new CSVParser(_trackData, _routeData,
 	  _waypointData));
+	_parsers.insert("igc", new IGCParser(_trackData, _routeData,
+	  _waypointData));
 }
 
 Data::~Data()

src/gui.cpp

@@ -108,16 +108,17 @@ GUI::~GUI()
 
 const QString GUI::fileFormats() const
 {
-	return tr("Supported files (*.csv *.fit *.gpx *.kml *.tcx)") + ";;"
+	return tr("Supported files (*.csv *.fit *.gpx *.igc *.kml *.tcx)") + ";;"
 	  + tr("CSV files (*.csv)") + ";;" + tr("FIT files (*.fit)") + ";;"
-	  + tr("GPX files (*.gpx)") + ";;" + tr("KML files (*.kml)") + ";;"
-	  + tr("TCX files (*.tcx)") + ";;" + tr("All files (*)");
+	  + tr("GPX files (*.gpx)") + ";;" + tr("IGC files (*.igc)") + ";;"
+	  + tr("KML files (*.kml)") + ";;" + tr("TCX files (*.tcx)") + ";;"
+	  + tr("All files (*)");
 }
 
 void GUI::createBrowser()
 {
 	QStringList filter;
-	filter << "*.gpx" << "*.tcx" << "*.kml" << "*.fit" << "*.csv";
+	filter << "*.gpx" << "*.tcx" << "*.kml" << "*.fit" << "*.csv" << "*.igc";
 	_browser = new FileBrowser(this);
 	_browser->setFilter(filter);
 }

src/igcparser.cpp

@@ -0,0 +1,204 @@
+#include <cctype>
+#include <cstring>
+#include "igcparser.h"
+
+
+static int str2int(const char *str, size_t len)
+{
+	int res = 0;
+
+	for (const char *sp = str; sp < str + len; sp++) {
+		if (::isdigit(*sp))
+			res = res * 10 + *sp - '0';
+		else
+			return -1;
+	}
+
+	return res;
+}
+
+static bool readLat(const char *line, qreal &lat)
+{
+	int d = str2int(line + 7, 2);
+	int mi = str2int(line + 9, 2);
+	int mf = str2int(line + 11, 3);
+	if (d < 0 || mi < 0 || mf < 0)
+		return false;
+
+	if (!(line[14] == 'N' || line[14] == 'S'))
+		return false;
+
+	lat = d + (((qreal)mi + (qreal)mf/1000) / 60);
+	if (lat > 90)
+		return false;
+
+	if (line[14] == 'S')
+		lat = -lat;
+
+	return true;
+}
+
+static bool readLon(const char *line, qreal &lon)
+{
+	int d = str2int(line + 15, 3);
+	int mi = str2int(line + 18, 2);
+	int mf = str2int(line + 20, 3);
+	if (d < 0 || mi < 0 || mf < 0)
+		return false;
+
+	if (!(line[23] == 'E' || line[23] == 'W'))
+		return false;
+
+	lon = d + (((qreal)mi + (qreal)mf/1000) / 60);
+	if (lon > 180)
+		return false;
+
+	if (line[23] == 'W')
+		lon = -lon;
+
+	return true;
+}
+
+static bool readAltitude(const char *line, qreal &ele)
+{
+	int p;
+
+	if (!(line[24] == 'A' || line[24] == 'V'))
+		return false;
+
+	if (line[25] == '-')
+		p = str2int(line + 26, 4);
+	else
+		p = str2int(line + 25, 5);
+
+	int g = str2int(line + 30, 5);
+	if (p < 0 || g < 0)
+		return false;
+
+	if (line[24] == 'A')
+		ele = (qreal)g;
+	else
+		ele = NAN;
+
+	return true;
+}
+
+bool IGCParser::readDate(const char *line)
+{
+	int d = str2int(line + 5, 2);
+	int m = str2int(line + 7, 2);
+	int y = str2int(line + 9, 2);
+
+	if (y < 0 || m < 0 || d < 0) {
+		_errorString = "Invalid date";
+		return false;
+	}
+
+	_date = QDate(2000 + y, m, d);
+
+	return true;
+}
+
+bool IGCParser::readRecord(const char *line)
+{
+	qreal lat, lon, ele;
+	QDateTime timestamp;
+
+
+	if (_date.isNull()) {
+		_errorString = "Date header missing";
+		return false;
+	}
+
+	int h = str2int(line + 1, 2);
+	int m = str2int(line + 3, 2);
+	int s = str2int(line + 5, 2);
+
+	if (h <0 || m < 0 || s < 0) {
+		_errorString = "Invalid  timestamp";
+		return false;
+	}
+	QTime time = QTime(h, m, s);
+	if (time < _time)
+		_date.addDays(1);
+	_time = time;
+	timestamp = QDateTime(_date, _time, Qt::UTC);
+
+	if (!readLat(line, lat)) {
+		_errorString = "Invalid latitude";
+		return false;
+	}
+	if (!readLon(line, lon)) {
+		_errorString = "Invalid longitude";
+		return false;
+	}
+
+	if (!readAltitude(line, ele)) {
+		_errorString = "Invalid altitude";
+		return false;
+	}
+
+	Trackpoint t(Coordinates(lon, lat));
+	t.setTimestamp(timestamp);
+	t.setElevation(ele);
+	_tracks.last().append(t);
+
+	return true;
+}
+
+bool IGCParser::loadFile(QFile *file)
+{
+	qint64 len;
+	char line[76 + 2 + 1 + 1];
+
+	_errorLine = 1;
+	_errorString.clear();
+
+	_tracks.append(TrackData());
+	_time = QTime(0, 0);
+
+	// Read the initial A record
+	if ((len = file->readLine(line, sizeof(line))) < 0) {
+		_errorString = "I/O error";
+		return false;
+	} else {
+		if (len < 9 || len > (qint64)sizeof(line) - 1 || line[0] != 'A') {
+			_errorString = "Not a IGC file";
+			return false;
+		}
+		for (int i = 1; i < 7; i++) {
+			if (!::isprint(line[i])) {
+				_errorString = "Not a IGC file";
+				return false;
+			}
+		}
+	}
+
+	_errorLine++;
+
+	// Read header (H) records and data (B) records
+	while ((len = file->readLine(line, sizeof(line))) > 0) {
+		if (len < 0) {
+			_errorString = "I/O error";
+			return false;
+		}
+		if (len > (qint64)sizeof(line) - 1) {
+			_errorString = "Line limit exceeded";
+			return false;
+		}
+
+		if (line[0] == 'B') {
+			if (len > 35)
+				if (!readRecord(line))
+					return false;
+		} else if (line[0] == 'H') {
+			if (len > 10 && !::strncmp(line + 1, "FDTE", 4))
+				if (!readDate(line))
+					return false;
+		}
+
+		_errorLine++;
+	}
+
+	return true;
+}

src/igcparser.h

@@ -0,0 +1,31 @@
+#ifndef IGCPARSER_H
+#define IGCPARSER_H
+
+#include <QDate>
+#include <QTime>
+#include "parser.h"
+
+
+class IGCParser : public Parser
+{
+public:
+	IGCParser(QList<TrackData> &tracks, QList<RouteData> &routes,
+	  QList<Waypoint> &waypoints) : Parser(tracks, routes, waypoints) {}
+	~IGCParser() {}
+
+	bool loadFile(QFile *file);
+	QString errorString() const {return _errorString;}
+	int errorLine() const {return _errorLine;}
+
+private:
+	bool readDate(const char *line);
+	bool readRecord(const char *line);
+
+	int _errorLine;
+	QString _errorString;
+
+	QDate _date;
+	QTime _time;
+};
+
+#endif // IGCPARSER_H