Use 'units' value instead of guessing based on integer/FP

We still end up guessing based on magnitude of the value, though: it
might be 'bar' or 'mbar', we end up picking one or the other based on
just how big the value is.

I should make it look at any possible explicit units too, since at least
with good xml, they exist.  Of course, the only good xml I've seen so
far is the one we generate ourselves ;)

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parse-xml.c

@@ -186,13 +186,11 @@ static void divedatetime(char *buffer, void *_when)
 }
 
 union int_or_float {
-	long i;
 	double fp;
 };
 
 enum number_type {
 	NEITHER,
-	INTEGER,
 	FLOAT
 };
 
@@ -217,38 +215,34 @@ static enum number_type integer_or_float(char *buffer, union int_or_float *res)
 		}
 	}
 
-	res->i = val;
+	res->fp = val;
-	return INTEGER;
+	return FLOAT;
 }
 
 static void pressure(char *buffer, void *_press)
 {
+	double mbar;
 	pressure_t *pressure = _press;
 	union int_or_float val;
 
 	switch (integer_or_float(buffer, &val)) {
 	case FLOAT:
-		/* Maybe it's in Bar? */
+		switch (units.pressure) {
-		if (val.fp < 500.0) {
+		case BAR:
-			pressure->mbar = val.fp * 1000 + 0.5;
+			/* Assume mbar, but if it's really small, it's bar */
+			mbar = val.fp;
+			if (mbar < 5000)
+				mbar = mbar * 1000;
+			break;
+		case PSI:
+			mbar = val.fp * 68.95;
 			break;
 		}
-		printf("Unknown fractional pressure reading %s\n", buffer);
+		if (mbar > 5 && mbar < 500000) {
-		break;
+			pressure->mbar = mbar + 0.5;
-
-	case INTEGER:
-		/*
-		 * Random integer? Maybe in PSI? Or millibar already?
-		 *
-		 * We assume that 5 bar is a ridiculous tank pressure,
-		 * so if it's smaller than 5000, it's in PSI..
-		 */
-		if (val.i < 5000) {
-			pressure->mbar = val.i * 68.95;
 			break;
 		}
-		pressure->mbar = val.i;
+	/* fallthrough */
-		break;
 	default:
 		printf("Strange pressure reading %s\n", buffer);
 	}
@@ -261,12 +255,15 @@ static void depth(char *buffer, void *_depth)
 	union int_or_float val;
 
 	switch (integer_or_float(buffer, &val)) {
-	/* All values are probably in meters */
-	case INTEGER:
-		val.fp = val.i;
-		/* fallthrough */
 	case FLOAT:
-		depth->mm = val.fp * 1000 + 0.5;
+		switch (units.length) {
+		case METERS:
+			depth->mm = val.fp * 1000 + 0.5;
+			break;
+		case FEET:
+			depth->mm = val.fp * 304.8 + 0.5;
+			break;
+		}
 		break;
 	default:
 		printf("Strange depth reading %s\n", buffer);
@@ -280,28 +277,19 @@ static void temperature(char *buffer, void *_temperature)
 	union int_or_float val;
 
 	switch (integer_or_float(buffer, &val)) {
-	/* C or F? Who knows? Let's default to Celsius */
-	case INTEGER:
-		val.fp = val.i;
-		/* Fallthrough */
 	case FLOAT:
 		/* Ignore zero. It means "none" */
 		if (!val.fp)
 			break;
 		/* Celsius */
-		if (val.fp < 50.0) {
+		switch (units.temperature) {
+		case CELSIUS:
 			temperature->mkelvin = (val.fp + 273.15) * 1000 + 0.5;
 			break;
-		}
+		case FAHRENHEIT:
-		/* Fahrenheit */
-		if (val.fp < 212.0) {
 			temperature->mkelvin = (val.fp + 459.67) * 5000/9;
 			break;
 		}
-		/* Kelvin or already millikelvin */
-		if (val.fp < 1000.0)
-			val.fp *= 1000;
-		temperature->mkelvin = val.fp;
 		break;
 	default:
 		printf("Strange temperature reading %s\n", buffer);
@@ -341,10 +329,6 @@ static void percent(char *buffer, void *_fraction)
 	union int_or_float val;
 
 	switch (integer_or_float(buffer, &val)) {
-	/* C or F? Who knows? Let's default to Celsius */
-	case INTEGER:
-		val.fp = val.i;
-		/* Fallthrough */
 	case FLOAT:
 		if (val.fp <= 100.0)
 			fraction->permille = val.fp * 10 + 0.5;
@@ -393,9 +377,6 @@ static void water_pressure(char *buffer, void *_depth)
 	float atm;
 
         switch (integer_or_float(buffer, &val)) {
-        case INTEGER:
-                val.fp = val.i;
-                /* Fallthrough */
         case FLOAT:
 		switch (units.pressure) {
 		case BAR:
@@ -516,9 +497,6 @@ static void uemis_date_time(char *buffer, void *_when)
         union int_or_float val;
 
         switch (integer_or_float(buffer, &val)) {
-        case INTEGER:
-                val.fp = val.i;
-                /* Fallthrough */
         case FLOAT:
 		*when = (val.fp - 40587.5) * 86400;
 		break;