Add LoTW and eQSL hints to dxcc popup

This uses the following files:

 * http://www.hb9bza.net/lotw/lotw1.txt
   in ~/.fldigi/lotw1.txt

 * http://www.eqsl.cc/QSLCard/DownloadedFiles/AGMemberList.txt
   in ~/.fldigi/AGMemberList.txt or ~/.fldigi/eqsl.txt

Also changed the FText tooltip display function to use a string stream

src/include/dxcc.h

@@ -13,8 +13,15 @@ struct dxcc {
 	     float lat = 0.0f, float lon = 0.0f, float tz = 0.0f);
 };
 
+enum qsl_t { QSL_LOTW, QSL_EQSL, QSL_END };
+extern const char* qsl_names[];
+
 bool dxcc_open(const char* filename);
 void dxcc_close(void);
 const dxcc* dxcc_lookup(const char* callsign);
 
+bool qsl_open(const char* filename, qsl_t qsl_type);
+void qsl_close(void);
+unsigned char qsl_lookup(const char* callsign);
+
 #endif // DXCC_H_

src/main.cxx

@@ -312,6 +312,11 @@ int main(int argc, char ** argv)
 
 	if (progdefaults.rxtext_tooltips || progdefaults.autofill_qso_fields)
 		dxcc_open(string(HomeDir).append("cty.dat").c_str());
+	if (progdefaults.rxtext_tooltips) {
+		qsl_open(string(HomeDir).append("lotw1.txt").c_str(), QSL_LOTW);
+		if (!qsl_open(string(HomeDir).append("eqsl.txt").c_str(), QSL_EQSL))
+			qsl_open(string(HomeDir).append("AGMemberList.txt").c_str(), QSL_EQSL);
+	}
 
 	int ret = Fl::run();
 

src/misc/dxcc.cxx

@@ -186,3 +186,52 @@ static void add_prefix(string& prefix, dxcc* entry)
 	prefix.erase(first);
 	prev_entry = cmap->insert(prev_entry, make_pair(prefix, entry));
 }
+
+typedef map<string, unsigned char> qsl_map;
+static qsl_map* qsl_calls;
+const char* qsl_names[] = { "LoTW", "eQSL" };
+
+bool qsl_open(const char* filename, qsl_t qsl_type)
+{
+	ifstream in(filename);
+	if (!in)
+		return false;
+	if (!qsl_calls)
+		qsl_calls = new qsl_map;
+
+	size_t n = qsl_calls->size();
+	qsl_map::iterator prev_entry = qsl_calls->begin();
+	string::size_type p;
+	string s;
+	s.reserve(32);
+	while (getline(in, s)) {
+		if ((p = s.rfind('\r')) != string::npos)
+			s.erase(p);
+		prev_entry = qsl_calls->insert(prev_entry, make_pair(s, 0));
+		prev_entry->second |= (1 << qsl_type);
+	}
+
+	LOG_INFO("Added %zu %s callsigns from \"%s\"",
+		 qsl_calls->size() - n, qsl_names[qsl_type], filename);
+
+	return true;
+}
+
+void qsl_close(void)
+{
+	delete qsl_calls;
+	qsl_calls = 0;
+}
+
+unsigned char qsl_lookup(const char* callsign)
+{
+	if (qsl_calls == 0)
+		return 0;
+
+	string str;
+	str.resize(strlen(callsign));
+	transform(callsign, callsign + str.length(), str.begin(), static_cast<int (*)(int)>(toupper));
+
+	qsl_map::const_iterator i = qsl_calls->find(str);
+	return i == qsl_calls->end() ? 0 : i->second;
+}

src/widgets/FTextView.cxx

@@ -29,6 +29,7 @@
 #include <cstdlib>
 #include <cstdio>
 #include <map>
+#include <sstream>
 #include <algorithm>
 
 #include <FL/Fl_Tooltip.H>
@@ -893,7 +894,6 @@ loop:
 const char* FTextView::dxcc_lookup_call(int x, int y)
 {
 	char* s = get_word(x - this->x(), y - this->y());
-	const char* ret = 0;
 	if (!(s && *s && call.match(s))) {
 		free(s);
 		return 0;
@@ -901,14 +901,16 @@ const char* FTextView::dxcc_lookup_call(int x, int y)
 
 	const char *name = 0, *date = 0, *qth = 0, *locator = 0, *mode;
 	double lon1, lat1, lon2 = 360.0, lat2 = 360.0, distance, azimuth;
-	static char tip[256];
-	size_t len = 0;
+	static string tip;
+	ostringstream stip;
 	const dxcc* e = 0;
 	cQsoRec* qso = 0;
+	unsigned char qsl;
 
 	e = dxcc_lookup(s);
+	qsl = qsl_lookup(s);
 	qso = SearchLog(s);
-	
+
 	if (qso) {
 		locator = qso->getField(GRIDSQUARE);
 		if (!(locator && *locator && locator2longlat(&lon2, &lat2, locator) == RIG_OK))
@@ -916,44 +918,47 @@ const char* FTextView::dxcc_lookup_call(int x, int y)
 		name = qso->getField(NAME);
 		date = qso->getField(QSO_DATE);
 		qth  = qso->getField(QTH);
-		
 	}
 	if (e) {
 		if (lon2 == 360.0)
 			lon2 = -e->longitude;
 		if (lat2 == 360.0)
 			lat2 = e->latitude;
-		len += snprintf(tip, sizeof(tip), "%s (%s GMT%+0.1f) CQ-%d ITU-%d\n",
-				e->country, e->continent, -e->gmt_offset, e->cq_zone, e->itu_zone);
-		ret = tip;
+		stip << e->country << " (" << e->continent
+		     << " GMT" << fixed << showpos << setprecision(1) << -e->gmt_offset << noshowpos
+		     << ") CQ-" << e->cq_zone << " ITU-" << e->itu_zone << '\n';
 	}
 
-	if (len < sizeof(tip) && locator2longlat(&lon1, &lat1, progdefaults.myLocator.c_str()) == RIG_OK &&
+	if (locator2longlat(&lon1, &lat1, progdefaults.myLocator.c_str()) == RIG_OK &&
 	    qrb(lon1, lat1, lon2, lat2, &distance, &azimuth) == RIG_OK) {
-		len += snprintf(tip + len, sizeof(tip) - len, "QTE %.0f\260 (%.0f\260)  QRB %.0fkm (%.0fkm)\n",
-				azimuth, azimuth_long_path(azimuth), distance, distance_long_path(distance));
-		ret = tip;
+		stip << "QTE " << setprecision(0) << azimuth << '\260' << " ("
+		     << azimuth_long_path(azimuth) << '\260' << ")  QRB " << distance << "km ("
+		     << distance_long_path(distance) << "km)\n";
 	}
-	if (len < sizeof(tip) && name && *name) {
-		len += snprintf(tip + len, sizeof(tip) - len, "* %s", name);
-		if (len < sizeof(tip) && qth && *qth)
-			len += snprintf(tip + len, sizeof(tip) - len, " %s %s\n", _("in"), qth);
-		else if (len + 1 < sizeof(tip)) {
-			tip[len++] = '\n';
-			tip[len] = '\0';
-		}
-		ret = tip;
+	if (name && *name) {
+		stip << "* " << name;
+		if (qth && *qth)
+			stip << ' ' << _("in") << ' ' << qth;
+		stip << '\n';
 	}
-	if (len < sizeof(tip) && date && *date) {
-		len += snprintf(tip + len, sizeof(tip) - len, "* %s: %s", _("Last QSO"), date);
+	if (date && *date) {
+		stip << "* " << _("Last QSO") << ": " << date;
 		mode = qso->getField(MODE);
-		if (len < sizeof(tip) && mode && *mode)
-			len += snprintf(tip + len, sizeof(tip) - len, " %s %s", _("in"), mode);
-		ret = tip;
+		if (mode)
+			stip << ' ' << _("in") << ' ' << mode;
+		stip << '\n';
+	}
+	if (qsl) {
+		stip << "* ";
+		for (unsigned char i = 0; i < QSL_END; i++)
+			if (qsl & (1 << i))
+				stip << qsl_names[i] << ' ';
+		stip << '\n';
 	}
 
 	free(s);
-	return ret;
+	tip = stip.str();
+	return tip.empty() ? 0 : tip.c_str();
 }
 
 void FTextView::dxcc_tooltip(void* obj)