Example #1
0
func getIntProp(device C.IOHIDDeviceRef, key C.CFStringRef) int32 {
	var value int32

	ref := C.IOHIDDeviceGetProperty(device, key)
	if ref != nil {
		if C.CFGetTypeID(ref) == C.CFNumberGetTypeID() {
			C.CFNumberGetValue(C.CFNumberRef(ref), C.kCFNumberSInt32Type, unsafe.Pointer(&value))
			return value
		}
	}
	return 0
}
Example #2
0
// CFNumberToInterface converts the CFNumberRef to the most appropriate numeric
// type.
// This code is from github.com/kballard/go-osx-plist.
func CFNumberToInterface(cfNumber C.CFNumberRef) interface{} {
	typ := C.CFNumberGetType(cfNumber)
	switch typ {
	case C.kCFNumberSInt8Type:
		var sint C.SInt8
		C.CFNumberGetValue(cfNumber, typ, unsafe.Pointer(&sint))
		return int8(sint)
	case C.kCFNumberSInt16Type:
		var sint C.SInt16
		C.CFNumberGetValue(cfNumber, typ, unsafe.Pointer(&sint))
		return int16(sint)
	case C.kCFNumberSInt32Type:
		var sint C.SInt32
		C.CFNumberGetValue(cfNumber, typ, unsafe.Pointer(&sint))
		return int32(sint)
	case C.kCFNumberSInt64Type:
		var sint C.SInt64
		C.CFNumberGetValue(cfNumber, typ, unsafe.Pointer(&sint))
		return int64(sint)
	case C.kCFNumberFloat32Type:
		var float C.Float32
		C.CFNumberGetValue(cfNumber, typ, unsafe.Pointer(&float))
		return float32(float)
	case C.kCFNumberFloat64Type:
		var float C.Float64
		C.CFNumberGetValue(cfNumber, typ, unsafe.Pointer(&float))
		return float64(float)
	case C.kCFNumberCharType:
		var char C.char
		C.CFNumberGetValue(cfNumber, typ, unsafe.Pointer(&char))
		return byte(char)
	case C.kCFNumberShortType:
		var short C.short
		C.CFNumberGetValue(cfNumber, typ, unsafe.Pointer(&short))
		return int16(short)
	case C.kCFNumberIntType:
		var i C.int
		C.CFNumberGetValue(cfNumber, typ, unsafe.Pointer(&i))
		return int32(i)
	case C.kCFNumberLongType:
		var long C.long
		C.CFNumberGetValue(cfNumber, typ, unsafe.Pointer(&long))
		return int(long)
	case C.kCFNumberLongLongType:
		// This is the only type that may actually overflow us
		var longlong C.longlong
		C.CFNumberGetValue(cfNumber, typ, unsafe.Pointer(&longlong))
		return int64(longlong)
	case C.kCFNumberFloatType:
		var float C.float
		C.CFNumberGetValue(cfNumber, typ, unsafe.Pointer(&float))
		return float32(float)
	case C.kCFNumberDoubleType:
		var double C.double
		C.CFNumberGetValue(cfNumber, typ, unsafe.Pointer(&double))
		return float64(double)
	case C.kCFNumberCFIndexType:
		// CFIndex is a long
		var index C.CFIndex
		C.CFNumberGetValue(cfNumber, typ, unsafe.Pointer(&index))
		return int(index)
	case C.kCFNumberNSIntegerType:
		// We don't have a definition of NSInteger, but we know it's either an int or a long
		var nsInt C.long
		C.CFNumberGetValue(cfNumber, typ, unsafe.Pointer(&nsInt))
		return int(nsInt)
	}
	panic("Unknown CFNumber type")
}
Example #3
0
func convertCFNumberToFloat64(cfNumber C.CFNumberRef) float64 {
	var double C.double
	C.CFNumberGetValue(cfNumber, C.kCFNumberDoubleType, unsafe.Pointer(&double))
	return float64(double)
}
Example #4
0
func convertCFNumberToUInt32(cfNumber C.CFNumberRef) uint32 {
	var sint C.SInt64
	C.CFNumberGetValue(cfNumber, C.kCFNumberSInt64Type, unsafe.Pointer(&sint))
	return uint32(sint)
}
Example #5
0
func convertCFNumberToInt64(cfNumber C.CFNumberRef) int64 {
	var sint C.SInt64
	C.CFNumberGetValue(cfNumber, C.kCFNumberSInt64Type, unsafe.Pointer(&sint))
	return int64(sint)
}