// CFStringToString converts a CFStringRef to a string.
func CFStringToString(s C.CFStringRef) string {
p := C.CFStringGetCStringPtr(s, C.kCFStringEncodingUTF8)
if p != nil {
return C.GoString(p)
}
length := C.CFStringGetLength(s)
if length == 0 {
return ""
}
maxBufLen := C.CFStringGetMaximumSizeForEncoding(length, C.kCFStringEncodingUTF8)
if maxBufLen == 0 {
return ""
}
buf := make([]byte, maxBufLen)
var usedBufLen C.CFIndex
_ = C.CFStringGetBytes(s, C.CFRange{0, length}, C.kCFStringEncodingUTF8, C.UInt8(0), C.false, (*C.UInt8)(&buf[0]), maxBufLen, &usedBufLen)
return string(buf[:usedBufLen])
}
func getCFDictValueUTF8String(dict C.CFDictionaryRef, key C.CFTypeRef) (string, error) {
valCFStringRef, err := getCFDictValueCFStringRef(dict, key)
if err != nil {
return "", err
}
log.Debugf("valCFStringRef: %#v", valCFStringRef)
if valCFStringRef == nil {
return "", errors.New("getCFDictValueUTF8String: Nil value")
}
strLen := C.CFStringGetLength(valCFStringRef)
log.Debugf("strLen: %d", strLen)
charUTF8Len := C.CFStringGetMaximumSizeForEncoding(strLen, C.kCFStringEncodingUTF8) + 1
log.Debugf("charUTF8Len: %d", charUTF8Len)
cstrBytes := make([]byte, charUTF8Len, charUTF8Len)
if C.Boolean(0) == C.CFStringGetCString(valCFStringRef, (*C.char)(unsafe.Pointer(&cstrBytes[0])), charUTF8Len, C.kCFStringEncodingUTF8) {
return "", errors.New("getCFDictValueUTF8String: CFStringGetCString: failed to convert value to string")
}
return C.GoString((*C.char)(unsafe.Pointer(&cstrBytes[0]))), nil
}
