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))
}
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))
}
// 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])
}