add macuuid.m

sys/unix/macuuid.m

@@ -0,0 +1,41 @@
+/* macuuid.m */
+/* Copyright Michael Allison, 2023 */
+/* NetHack may be freely redistributed.  See license for details. */
+
+#include "hack.h"
+
+#ifdef DEBUG
+#undef DEBUG
+#endif
+
+/* #import <Foundation/Foundation.h> */
+#import <AppKit/AppKit.h>
+
+static const char *macos_uuid = 0;
+
+void
+free_macos_uuid(void)
+{
+    if (macos_uuid) {
+        free((genericptr_t) macos_uuid);
+        macos_uuid = 0;
+    } 
+}
+
+const char *
+get_macos_uuid(void)
+{
+    NSString *uuidString = [[NSUUID UUID] UUIDString];
+    const char *str_uuid;
+ 
+    if (macos_uuid)
+        free_macos_uuid();
+
+    /* str_uuid = [uuidString cStringUsingEncoding:NSUTF8StringEncoding]; */
+    str_uuid = [uuidString cStringUsingEncoding:NSASCIIStringEncoding];
+    macos_uuid = dupstr(str_uuid);
+    return macos_uuid;
+}
+
+
+/* end of macuuid.m */