func cstrToStr(cstr C.CFStringRef) (goString string) {
len := C.CFStringGetLength(cstr)
buf := make([]byte, len*2)
cbuf := (*C.char)(unsafe.Pointer(&buf[0]))
C.CFStringGetCString(cstr, cbuf, len*2, C.CFStringGetSystemEncoding())
return string(buf)
}
func convertCFStringToString(cfStr C.CFStringRef) string {
cstrPtr := C.CFStringGetCStringPtr(cfStr, C.kCFStringEncodingUTF8)
if cstrPtr != nil {
return C.GoString(cstrPtr)
}
// quick path doesn't work, so copy the bytes out to a buffer
length := C.CFStringGetLength(cfStr)
if length == 0 {
// short-cut for empty strings
return ""
}
cfRange := C.CFRange{0, length}
enc := C.CFStringEncoding(C.kCFStringEncodingUTF8)
// first find the buffer size necessary
var usedBufLen C.CFIndex
if C.CFStringGetBytes(cfStr, cfRange, enc, 0, C.false, nil, 0, &usedBufLen) > 0 {
bytes := make([]byte, usedBufLen)
buffer := (*C.UInt8)(unsafe.Pointer(&bytes[0]))
if C.CFStringGetBytes(cfStr, cfRange, enc, 0, C.false, buffer, usedBufLen, nil) > 0 {
// bytes is now filled up
// convert it to a string
header := (*reflect.SliceHeader)(unsafe.Pointer(&bytes))
strHeader := &reflect.StringHeader{
Data: header.Data,
Len: header.Len,
}
return *(*string)(unsafe.Pointer(strHeader))
}
}
// we failed to convert, for some reason. Too bad there's no nil string
return ""
}
func (c osx16Collator) Compare(a, b Input) int {
sa := C.CFStringCreateWithCharactersNoCopy(
nil,
osxCharP(a.UTF16),
C.CFIndex(len(a.UTF16)),
nil,
)
sb := C.CFStringCreateWithCharactersNoCopy(
nil,
osxCharP(b.UTF16),
C.CFIndex(len(b.UTF16)),
nil,
)
_range := C.CFRangeMake(0, C.CFStringGetLength(sa))
return int(C.CFStringCompareWithOptionsAndLocale(sa, sb, _range, c.opt, c.loc))
}
// 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 NSStringToString(inString Object) string {
cr := C.CFStringRef(unsafe.Pointer(inString))
var usedBufLen C.CFIndex
rng := C.CFRange{C.CFIndex(0), C.CFStringGetLength(cr)}
n := int(C.CFStringGetBytes(cr, rng, C.kCFStringEncodingUTF8, 0, 0, nil, 0, &usedBufLen))
if n <= 0 {
return ""
}
buf := make([]byte, int(usedBufLen))
C.CFStringGetBytes(cr, rng, C.kCFStringEncodingUTF8, 0, 0, (*C.UInt8)(unsafe.Pointer(&buf[0])), C.CFIndex(len(buf)), &usedBufLen)
sh := &reflect.StringHeader{
Data: uintptr(unsafe.Pointer(&buf[0])),
Len: int(usedBufLen),
}
return *(*string)(unsafe.Pointer(sh))
}
func (c osx8Collator) Compare(a, b Input) int {
sa := C.CFStringCreateWithBytesNoCopy(
nil,
osxUInt8P(a.UTF8),
C.CFIndex(len(a.UTF8)),
C.kCFStringEncodingUTF8,
C.Boolean(0),
nil,
)
sb := C.CFStringCreateWithBytesNoCopy(
nil,
osxUInt8P(b.UTF8),
C.CFIndex(len(b.UTF8)),
C.kCFStringEncodingUTF8,
C.Boolean(0),
nil,
)
_range := C.CFRangeMake(0, C.CFStringGetLength(sa))
return int(C.CFStringCompareWithOptionsAndLocale(sa, sb, _range, c.opt, c.loc))
}
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
}
// Converts a CGStringRef object to a Go string.
func CFStringToGoString(s C.CFStringRef) string {
ptr := C.CFStringGetCStringPtr(s, C.kCFStringEncodingUTF8)
if ptr != nil {
return C.GoString(ptr)
}
n := C.CFStringGetLength(s)
b := make([]byte, int(4*n))
C.CFStringGetBytes(
s,
C.CFRangeMake(0, n),
C.kCFStringEncodingUTF8,
'?',
0,
(*C.UInt8)(unsafe.Pointer(&b[0])),
C.CFIndex(len(b)),
&n,
)
return string(b[:n])
}
