feat(Variant): add getValueAsFloat impl

include/linphone/utils/utils.h

@@ -50,6 +50,7 @@ namespace Utils {
 
 	LINPHONE_PUBLIC int stoi (const std::string &str, size_t *idx = 0, int base = 10);
 	LINPHONE_PUBLIC double stod (const std::string &str, size_t *idx = 0);
+	LINPHONE_PUBLIC float stof (const std::string &str, size_t *idx = 0);
 	LINPHONE_PUBLIC bool stob (const std::string &str);
 
 	LINPHONE_PUBLIC std::string stringToLower (const std::string &str);

src/utils/utils.cpp

@@ -94,12 +94,22 @@ int Utils::stoi (const string &str, size_t *idx, int base) {
 	return v;
 }
 
-double Utils::stod (const std::string &str, size_t *idx) {
+double Utils::stod (const string &str, size_t *idx) {
 	char *p;
 	double v = strtod(str.c_str(), &p);
 
 	if (idx)
-	  *idx = p - str.c_str();
+		*idx = p - str.c_str();
+
+	return v;
+}
+
+float Utils::stof (const string &str, size_t *idx) {
+	char *p;
+	float v = strtof(str.c_str(), &p);
+
+	if (idx)
+		*idx = p - str.c_str();
 
 	return v;
 }

src/variant/variant.cpp

@@ -407,7 +407,43 @@ static inline double getValueAsDouble (const VariantPrivate &p, bool *soFarSoGoo
 }
 
 static inline float getValueAsFloat (const VariantPrivate &p, bool *soFarSoGood) {
-	// TODO.
+	const int type = p.getType();
+	L_ASSERT(type > Variant::Invalid && type < Variant::MaxDefaultTypes);
+
+	switch (static_cast<Variant::Type>(type)) {
+		case Variant::Int:
+		case Variant::Short:
+		case Variant::Long:
+		case Variant::LongLong:
+		case Variant::Char:
+			return static_cast<double>(getAssumedNumber(p));
+
+		case Variant::UnsignedInt:
+		case Variant::UnsignedShort:
+		case Variant::UnsignedLong:
+		case Variant::UnsignedLongLong:
+			return static_cast<double>(getAssumedUnsignedNumber(p));
+
+		case Variant::Float:
+			return p.value.f;
+
+		case Variant::Double:
+			return static_cast<float>(p.value.d);
+
+		case Variant::Bool:
+			return static_cast<double>(p.value.b);
+
+		case Variant::String:
+			return Utils::stof(*p.value.str);
+
+		case Variant::Generic:
+			return static_cast<double>(!!p.value.g);
+
+		default:
+			*soFarSoGood = false;
+			break;
+	}
+
 	return 0.f;
 }