From 4c52b1dea4e11371761f8a52a65052246c74d23a Mon Sep 17 00:00:00 2001
From: Adam Harrison <adamdharrison@gmail.com>
Date: Sat, 2 Oct 2021 15:52:35 -0400
Subject: [PATCH] Removes the objective C file, replacing it with the C api.

---
 src/bundle_open.m | 20 --------------------
 src/main.c        | 21 +++++++++++++++++----
 2 files changed, 17 insertions(+), 24 deletions(-)
 delete mode 100644 src/bundle_open.m

diff --git a/src/bundle_open.m b/src/bundle_open.m
deleted file mode 100644
index 2ba10da7..00000000
--- a/src/bundle_open.m
+++ /dev/null
@@ -1,20 +0,0 @@
-#import <Foundation/Foundation.h>
-#include "lua.h"
-
-#ifdef MACOS_USE_BUNDLE
-void set_macos_bundle_resources(lua_State *L)
-{ @autoreleasepool
-{
-    NSString* resource_path = [[NSBundle mainBundle] resourcePath];
-    lua_pushstring(L, [resource_path UTF8String]);
-    lua_setglobal(L, "MACOS_RESOURCES");
-}}
-#endif
-
-/* Thanks to mathewmariani, taken from his lite-macos github repository. */
-void enable_momentum_scroll() {
-  [[NSUserDefaults standardUserDefaults]
-    setBool: YES
-    forKey: @"AppleMomentumScrollSupported"];
-}
-
diff --git a/src/main.c b/src/main.c
index 182511d0..b85b2cb6 100644
--- a/src/main.c
+++ b/src/main.c
@@ -12,6 +12,9 @@
   #include <signal.h>
 #elif __APPLE__
   #include <mach-o/dyld.h>
+  #include <CoreFoundation/CoreFoundation.h>
+  #include <objc/runtime.h>
+  #include <objc/message.h>
 #endif
 
 
@@ -77,10 +80,20 @@ static void init_window_icon(void) {
 #endif
 
 #ifdef __APPLE__
-void enable_momentum_scroll();
-#ifdef MACOS_USE_BUNDLE
-void set_macos_bundle_resources(lua_State *L);
-#endif
+  static void enable_momentum_scroll() {
+    void* standardUserDefaults = objc_msgSend(objc_getClass("NSUserDefaults"), NSSelectorFromString(CFSTR("standardUserDefaults")));
+    objc_msgSend(standardUserDefaults, "setBool", true, CFSTR("AppleMomentumScrollSupported"));
+  }
+  #ifdef MACOS_USE_BUNDLE
+    static void set_macos_bundle_resources(lua_State *L) {
+      id autoreleasePool = objc_msgSend(objc_msgSend(objc_getClass("NSAutoreleasePool"), sel_registerName("alloc")), sel_registerName("init"));
+      void* obj = objc_msgSend(objc_getClass("NSBundle"), NSSelectorFromString(CFSTR("mainBundle")));
+      const char* utf8string = objc_msgSend(objc_msgSend(obj, NSSelectorFromString(CFSTR("resourcePath"))), NSSelectorFromString(CFSTR("UTF8String")));
+      lua_pushstring(L, utf8string);
+      lua_setglobal(L, "MACOS_RESOURCES");
+      objc_msgSend(autoreleasePool, sel_registerName("drain"));
+    }
+  #endif
 #endif
 
 int main(int argc, char **argv) {