nslog_writer.go

package nslog

/*
#cgo CFLAGS: -x objective-c
#cgo LDFLAGS: -framework Foundation
#import <Foundation/Foundation.h>
void Log(const char *text) {
  NSString *nss = [NSString stringWithUTF8String:text];
  NSLog(@"%@", nss);
}
*/
import "C"
import (
	"io"
	"unsafe"
)

type nslog struct{}

func New() io.Writer {
	return new(nslog)
}

func (l *nslog) Write(p []byte) (n int, err error) {
	msg := append(p[:], 0)
	C.Log((*C.char)(unsafe.Pointer(&msg[0])))
	return len(p), nil
}

func (l *nslog) WriteString(s string) (n int, err error) {
	cs := C.CString(s)
	defer C.free(unsafe.Pointer(cs))
	C.Log(cs)
	return len(s), nil
}