core: convert pref.c and units.c to C++

Convert both files simultanously, because the SI_UNITS define works
either under C or under C++.

This was painful, because initialization of struct-members has to
be done in order of definition in C++. And it was completely out
of order. However, as long as not all is C++, we can't use
default initialization directly in the struct definition. :(

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>

Subsurface-mobile.pro

@@ -45,7 +45,7 @@ SOURCES += subsurface-mobile-main.cpp \
 	core/fulltext.cpp \
 	core/subsurfacestartup.cpp \
 	core/subsurface-string.cpp \
-	core/pref.c \
+	core/pref.cpp \
 	core/profile.cpp \
 	core/device.cpp \
 	core/dive.cpp \
@@ -98,7 +98,7 @@ SOURCES += subsurface-mobile-main.cpp \
 	core/taxonomy.c \
 	core/time.cpp \
 	core/trip.c \
-	core/units.c \
+	core/units.cpp \
 	core/uemis.cpp \
 	core/btdiscovery.cpp \
 	core/connectionlistmodel.cpp \

core/CMakeLists.txt

@@ -145,7 +145,7 @@ set(SUBSURFACE_CORE_LIB_SRCS
 	planner.h
 	plannernotes.cpp
 	pref.h
-	pref.c
+	pref.cpp
 	profile.cpp
 	profile.h
 	qt-gui.h
@@ -188,7 +188,7 @@ set(SUBSURFACE_CORE_LIB_SRCS
 	uemis.cpp
 	uemis.h
 	units.h
-	units.c
+	units.cpp
 	uploadDiveShare.cpp
 	uploadDiveShare.h
 	uploadDiveLogsDE.cpp

core/pref.cpp

@@ -5,10 +5,96 @@
 
 struct preferences prefs, git_prefs;
 struct preferences default_prefs = {
+	.animation_speed = 500,
 	.cloud_base_url = "https://" CLOUD_HOST_EU "/", // if we don't know any better, use the European host
-	.units = SI_UNITS,
+#if defined(SUBSURFACE_MOBILE)
-	.unit_system = METRIC,
+	.cloud_timeout = 10,
-	.coordinates_traditional = true,
+#else
+	.cloud_timeout = 5,
+#endif
+	.sync_dc_time = false,
+	.display_invalid_dives = false,
+	.divelist_font = NULL,
+	.font_size = -1,
+	.mobile_scale = 1.0,
+	.show_developer = true,
+	.three_m_based_grid = false,
+	.map_short_names = false,
+	.default_cylinder = NULL,
+	.include_unused_tanks = false,
+	.display_default_tank_infos = true,
+	.auto_recalculate_thumbnails = true,
+	.extract_video_thumbnails = true,
+	.extract_video_thumbnails_position = 20,		// The first fifth seems like a reasonable place
+	.ffmpeg_executable = NULL,
+	.defaultsetpoint = 1100,
+	.default_filename = NULL,
+	.default_file_behavior = LOCAL_DEFAULT_FILE,
+	.o2consumption = 720,
+	.pscr_ratio = 100,
+	.use_default_file = true,
+	.extraEnvironmentalDefault = false,
+	.salinityEditDefault = false,
+	.geocoding = {
+		.category = { TC_NONE, TC_NONE, TC_NONE }
+	},
+	.date_format = NULL,
+	.date_format_override = false,
+	.date_format_short = NULL,
+	.locale = {
+		.use_system_language = true,
+	},
+	.time_format = NULL,
+	.time_format_override = false,
+	.proxy_auth = false,
+	.proxy_host = NULL,
+	.proxy_port = 0,
+	.proxy_type = 0,
+	.proxy_user = NULL,
+	.proxy_pass = NULL,
+	.ascratelast6m = 9000 / 60,
+	.ascratestops = 9000 / 60,
+	.ascrate50 = 9000 / 60,
+	.ascrate75 = 9000 / 60,
+	.bestmixend = { 30000 },
+	.bottompo2 = 1400,
+	.bottomsac = 20000,
+	.decopo2 = 1600,
+	.decosac = 17000,
+	.descrate = 18000 / 60,
+	.display_duration = true,
+	.display_runtime = true,
+	.display_transitions = true,
+	.display_variations = false,
+	.doo2breaks = false,
+	.dobailout = false,
+	.o2narcotic = true,
+	.drop_stone_mode = false,
+	.last_stop = false,
+	.min_switch_duration = 60,
+	.surface_segment = 0,
+	.planner_deco_mode = BUEHLMANN,
+	.problemsolvingtime = 4,
+	.reserve_gas=40000,
+	.sacfactor = 400,
+	.safetystop = true,
+	.switch_at_req_stop = false,
+	.verbatim_plan = false,
+	.calcalltissues = false,
+	.calcceiling = false,
+	.calcceiling3m = false,
+	.calcndltts = false,
+	.decoinfo = true,
+	.dcceiling = true,
+	.display_deco_mode = BUEHLMANN,
+	.ead = false,
+	.gfhigh = 75,
+	.gflow = 30,
+	.gf_low_at_maxdepth = false,
+	.hrgraph = false,
+	.mod = false,
+	.modpO2 = 1.6,
+	.percentagegraph = false,
 	.pp_graphs = {
 		.po2 = false,
 		.pn2 = false,
@@ -18,86 +104,27 @@ struct preferences default_prefs = {
 		.pn2_threshold = 4.0,
 		.phe_threshold = 13.0,
 	},
-	.mod = false,
-	.modpO2 = 1.6,
-	.ead = false,
-	.hrgraph = false,
-	.percentagegraph = false,
-	.dcceiling = true,
 	.redceiling = false,
-	.calcceiling = false,
+	.rulergraph = false,
-	.calcceiling3m = false,
-	.calcndltts = false,
-	.decoinfo = true,
-	.gflow = 30,
-	.gfhigh = 75,
-	.animation_speed = 500,
-	.gf_low_at_maxdepth = false,
-	.show_ccr_setpoint = false,
-	.show_ccr_sensors = false,
-	.show_scr_ocpo2 = false,
-	.font_size = -1,
-	.mobile_scale = 1.0,
-	.display_invalid_dives = false,
-	.show_sac = false,
-	.include_unused_tanks = false,
-	.display_default_tank_infos = true,
 	.show_average_depth = true,
+	.show_ccr_sensors = false,
+	.show_ccr_setpoint = false,
 	.show_icd = false,
-	.ascrate75 = 9000 / 60,
-	.ascrate50 = 9000 / 60,
-	.ascratestops = 9000 / 60,
-	.ascratelast6m = 9000 / 60,
-	.descrate = 18000 / 60,
-	.sacfactor = 400,
-	.problemsolvingtime = 4,
-	.bottompo2 = 1400,
-	.decopo2 = 1600,
-	.bestmixend.mm = 30000,
-	.doo2breaks = false,
-	.dobailout = false,
-	.drop_stone_mode = false,
-	.switch_at_req_stop = false,
-	.min_switch_duration = 60,
-	.surface_segment = 0,
-	.last_stop = false,
-	.verbatim_plan = false,
-	.display_runtime = true,
-	.display_duration = true,
-	.display_transitions = true,
-	.display_variations = false,
-	.o2narcotic = true,
-	.safetystop = true,
-	.bottomsac = 20000,
-	.decosac = 17000,
-	.reserve_gas=40000,
-	.o2consumption = 720,
-	.pscr_ratio = 100,
 	.show_pictures_in_profile = true,
+	.show_sac = false,
+	.show_scr_ocpo2 = false,
 	.tankbar = false,
-	.defaultsetpoint = 1100,
-	.geocoding = {
-		.category = { 0 }
-	},
-	.locale = {
-		.use_system_language = true,
-	},
-	.planner_deco_mode = BUEHLMANN,
 	.vpmb_conservatism = 3,
-#if defined(SUBSURFACE_MOBILE)
+	.zoomed_plot = false,
-	.cloud_timeout = 10,
+	.infobox = true,
-#else
+	.coordinates_traditional = true,
-	.cloud_timeout = 5,
+	.unit_system = METRIC,
-#endif
+	.units = SI_UNITS,
-	.auto_recalculate_thumbnails = true,
+	.update_manager = { false, NULL, 0 }
-	.extract_video_thumbnails = true,
-	.extract_video_thumbnails_position = 20,		// The first fifth seems like a reasonable place
-	.three_m_based_grid = false,
-	.sync_dc_time = false,
 };
 
 /* copy a preferences block, including making copies of all included strings */
-void copy_prefs(struct preferences *src, struct preferences *dest)
+extern "C" void copy_prefs(struct preferences *src, struct preferences *dest)
 {
 	*dest = *src;
 	dest->divelist_font = copy_string(src->divelist_font);
@@ -122,7 +149,7 @@ void copy_prefs(struct preferences *src, struct preferences *dest)
  * These are not real leaks but they plug the holes found by eg.
  * valgrind so you can find the real leaks.
  */
-void free_prefs(void)
+extern "C" void free_prefs(void)
 {
 	// nop
 }

core/units.cpp

@@ -3,28 +3,25 @@
 #include "gettext.h"
 #include "pref.h"
 
-#define IMPERIAL_UNITS                                                                                     \
-        {                                                                                                  \
-	        .length = FEET, .volume = CUFT, .pressure = PSI, .temperature = FAHRENHEIT, .weight = LBS, \
-		.vertical_speed_time = MINUTES, .duration_units = MIXED, .show_units_table = false         \
-        }
-
 const struct units SI_units = SI_UNITS;
-const struct units IMPERIAL_units = IMPERIAL_UNITS;
+const struct units IMPERIAL_units = {
+        .length = units::FEET, .volume = units::CUFT, .pressure = units::PSI, .temperature = units::FAHRENHEIT, .weight = units::LBS,
+	.vertical_speed_time = units::MINUTES, .duration_units = units::MIXED, .show_units_table = false
+};
 
-int get_pressure_units(int mb, const char **units)
+extern "C" int get_pressure_units(int mb, const char **units)
 {
 	int pressure;
 	const char *unit;
 	const struct units *units_p = get_units();
 
 	switch (units_p->pressure) {
-	case BAR:
+	case units::BAR:
 	default:
 		pressure = (mb + 500) / 1000;
 		unit = translate("gettextFromC", "bar");
 		break;
-	case PSI:
+	case units::PSI:
 		pressure = (int)lrint(mbar_to_PSI(mb));
 		unit = translate("gettextFromC", "psi");
 		break;
@@ -34,13 +31,13 @@ int get_pressure_units(int mb, const char **units)
 	return pressure;
 }
 
-double get_temp_units(unsigned int mk, const char **units)
+extern "C" double get_temp_units(unsigned int mk, const char **units)
 {
 	double deg;
 	const char *unit;
 	const struct units *units_p = get_units();
 
-	if (units_p->temperature == FAHRENHEIT) {
+	if (units_p->temperature == units::FAHRENHEIT) {
 		deg = mkelvin_to_F(mk);
 		unit = "°F";
 	} else {
@@ -52,7 +49,7 @@ double get_temp_units(unsigned int mk, const char **units)
 	return deg;
 }
 
-double get_volume_units(unsigned int ml, int *frac, const char **units)
+extern "C" double get_volume_units(unsigned int ml, int *frac, const char **units)
 {
 	int decimals;
 	double vol;
@@ -60,13 +57,13 @@ double get_volume_units(unsigned int ml, int *frac, const char **units)
 	const struct units *units_p = get_units();
 
 	switch (units_p->volume) {
-	case LITER:
+	case units::LITER:
 	default:
 		vol = ml / 1000.0;
 		unit = translate("gettextFromC", "ℓ");
 		decimals = 1;
 		break;
-	case CUFT:
+	case units::CUFT:
 		vol = ml_to_cuft(ml);
 		unit = translate("gettextFromC", "cuft");
 		decimals = 2;
@@ -79,18 +76,18 @@ double get_volume_units(unsigned int ml, int *frac, const char **units)
 	return vol;
 }
 
-int units_to_sac(double volume)
+extern "C" int units_to_sac(double volume)
 {
-	if (get_units()->volume == CUFT)
+	if (get_units()->volume == units::CUFT)
 		return lrint(cuft_to_l(volume) * 1000.0);
 	else
 		return lrint(volume * 1000);
 }
 
-depth_t units_to_depth(double depth)
+extern "C" depth_t units_to_depth(double depth)
 {
 	depth_t internaldepth;
-	if (get_units()->length == METERS) {
+	if (get_units()->length == units::METERS) {
 		internaldepth.mm = lrint(depth * 1000);
 	} else {
 		internaldepth.mm = feet_to_mm(depth);
@@ -98,7 +95,7 @@ depth_t units_to_depth(double depth)
 	return internaldepth;
 }
 
-double get_depth_units(int mm, int *frac, const char **units)
+extern "C" double get_depth_units(int mm, int *frac, const char **units)
 {
 	int decimals;
 	double d;
@@ -106,13 +103,13 @@ double get_depth_units(int mm, int *frac, const char **units)
 	const struct units *units_p = get_units();
 
 	switch (units_p->length) {
-	case METERS:
+	case units::METERS:
 	default:
 		d = mm / 1000.0;
 		unit = translate("gettextFromC", "m");
 		decimals = d < 20;
 		break;
-	case FEET:
+	case units::FEET:
 		d = mm_to_feet(mm);
 		unit = translate("gettextFromC", "ft");
 		decimals = 0;
@@ -125,25 +122,25 @@ double get_depth_units(int mm, int *frac, const char **units)
 	return d;
 }
 
-double get_vertical_speed_units(unsigned int mms, int *frac, const char **units)
+extern "C" double get_vertical_speed_units(unsigned int mms, int *frac, const char **units)
 {
 	double d;
 	const char *unit;
 	const struct units *units_p = get_units();
-	const double time_factor = units_p->vertical_speed_time == MINUTES ? 60.0 : 1.0;
+	const double time_factor = units_p->vertical_speed_time == units::MINUTES ? 60.0 : 1.0;
 
 	switch (units_p->length) {
-	case METERS:
+	case units::METERS:
 	default:
 		d = mms / 1000.0 * time_factor;
-		if (units_p->vertical_speed_time == MINUTES)
+		if (units_p->vertical_speed_time == units::MINUTES)
 			unit = translate("gettextFromC", "m/min");
 		else
 			unit = translate("gettextFromC", "m/s");
 		break;
-	case FEET:
+	case units::FEET:
 		d = mm_to_feet(mms) * time_factor;
-		if (units_p->vertical_speed_time == MINUTES)
+		if (units_p->vertical_speed_time == units::MINUTES)
 			unit = translate("gettextFromC", "ft/min");
 		else
 			unit = translate("gettextFromC", "ft/s");
@@ -156,14 +153,14 @@ double get_vertical_speed_units(unsigned int mms, int *frac, const char **units)
 	return d;
 }
 
-double get_weight_units(unsigned int grams, int *frac, const char **units)
+extern "C" double get_weight_units(unsigned int grams, int *frac, const char **units)
 {
 	int decimals;
 	double value;
 	const char *unit;
 	const struct units *units_p = get_units();
 
-	if (units_p->weight == LBS) {
+	if (units_p->weight == units::LBS) {
 		value = grams_to_lbs(grams);
 		unit = translate("gettextFromC", "lbs");
 		decimals = 0;
@@ -179,7 +176,7 @@ double get_weight_units(unsigned int grams, int *frac, const char **units)
 	return value;
 }
 
-const struct units *get_units()
+extern "C" const struct units *get_units()
 {
 	return &prefs.units;
 }

core/units.h

@@ -329,8 +329,8 @@ struct units {
  */
 #define SI_UNITS 																\
         {																	\
-	        .length = METERS, .volume = LITER, .pressure = BAR, .temperature = CELSIUS, .weight = KG,  \
+	        .length = units::METERS, .volume = units::LITER, .pressure = units::BAR, .temperature = units::CELSIUS, .weight = units::KG,	\
-		.vertical_speed_time = MINUTES, .duration_units = MIXED, .show_units_table = false         \
+		.vertical_speed_time = units::MINUTES, .duration_units = units::MIXED, .show_units_table = false				\
         }
 
 extern const struct units SI_units, IMPERIAL_units;