load all plugins from relative directory (need to not hardcode it)

plugins/highlighter/src/plugin.odin

@@ -14,7 +14,7 @@ BufferIndex :: p.BufferIndex;
 @export
 OnInitialize :: proc "c" (plugin: Plugin) {
     context = runtime.default_context();
-    fmt.println("Hello from the Odin Highlighter Plugin!");
+    fmt.println("builtin highlighter plugin initialized!");
 
     plugin.register_highlighter(plugin.state, ".odin", color_buffer_odin);
     plugin.register_highlighter(plugin.state, ".rs", color_buffer_rust);

src/main.odin

@@ -186,14 +186,25 @@ register_default_input_actions :: proc(input_map: ^core.InputMap) {
     register_default_go_actions(&(&input_map.key_actions[.G]).action.(core.InputMap));
 }
 
-load_plugins :: proc(state: ^State) -> core.Error {
-    if loaded_plugin, succ := plugin.try_load_plugin("bin/highlighter.dylib"); succ {
+load_plugin :: proc(info: os.File_Info, in_err: os.Errno, state: rawptr) -> (err: os.Errno, skip_dir: bool) {
+    state := cast(^State)state;
+
+    relative_file_path, rel_error := filepath.rel(state.directory, info.fullpath);
+    extension := filepath.ext(info.fullpath);
+
+    if extension == ".dylib" || extension == ".dll" || extension == ".so" {
+        if loaded_plugin, succ := plugin.try_load_plugin(info.fullpath); succ {
             append(&state.plugins, loaded_plugin);
-        fmt.println("Loaded Odin Highlighter plugin");
-        return core.no_error();
+
+            if rel_error == .None {
+                fmt.println("Loaded", relative_file_path);
+            } else {
+                fmt.println("Loaded", info.fullpath);
+            }
+        }
     }
 
-    return core.make_error(.PluginLoadError, fmt.aprintf("failed to load Odin Highligher plugin"));
+    return in_err, skip_dir;
 }
 
 main :: proc() {
@@ -496,9 +507,7 @@ main :: proc() {
     }
 
     // Load plugins
-    if err := load_plugins(&state); err.type != .None {
-        fmt.println(err.msg);
-    }
+    filepath.walk(filepath.join({ state.directory, "bin" }), load_plugin, transmute(rawptr)&state);
 
     for plugin in state.plugins {
         if plugin.on_initialize != nil {

src/plugin/plugin.odin

@@ -76,7 +76,6 @@ load_proc_address :: proc(lib_path: string, library: dynlib.Library, symbol: str
     where intrinsics.type_is_proc(ProcType)
 {
     if address, found := dynlib.symbol_address(library, symbol); found {
-        fmt.println("The symbol", symbol, "was found at the address", address);
         return transmute(ProcType)address;
     } else {
         fmt.println("Could not find symbol", symbol, "in library", lib_path);
@@ -91,9 +90,14 @@ try_load_plugin :: proc(lib_path: string) -> (plugin: Interface, success: bool)
         return {}, false;
     }
 
-    return Interface {
+    interface := Interface {
         on_initialize = load_proc_address(lib_path, library, "OnInitialize", OnInitializeProc),
         on_exit = load_proc_address(lib_path, library, "OnExit", OnExitProc),
         on_draw = load_proc_address(lib_path, library, "OnDraw", OnDrawProc),
-    }, true;
+    };
+
+    if interface.on_initialize == nil do return interface, false;
+    if interface.on_exit == nil do return interface, false;
+
+    return interface, true
 }