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// 27 february 2014
package main
import (
"fmt"
"unsafe"
)
// #cgo LDFLAGS: -lobjc -framework Foundation
// #include <stdlib.h>
// #include <objc/message.h>
// #include <objc/objc.h>
// #include <objc/runtime.h>
// /* cgo doesn't handle ... */
// id objc_msgSend_noargs(id obj, SEL sel) { return objc_msgSend(obj, sel); }
// id objc_msgSend_strarg(id obj, SEL sel, char *a) { return objc_msgSend(obj, sel, a); }
import "C"
func objc_getClass(class string) C.id {
cclass := C.CString(class)
defer C.free(unsafe.Pointer(cclass))
return C.objc_getClass(cclass)
}
func sel_getUid(sel string) C.SEL {
csel := C.CString(sel)
defer C.free(unsafe.Pointer(csel))
return C.sel_getUid(csel)
}
func main() {
_hello := C.CString("hello, world\n")
defer C.free(unsafe.Pointer(_hello))
NSString := objc_getClass("NSString")
stringWithUTF8String :=
sel_getUid("stringWithUTF8String:")
str := C.objc_msgSend_strarg(NSString,
stringWithUTF8String,
_hello)
UTF8String := sel_getUid("UTF8String")
res := C.objc_msgSend_noargs(str,
UTF8String)
cres := (*C.char)(unsafe.Pointer(res))
fmt.Printf("%s", C.GoString(cres))
}
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