Passing detailed reason for image load failure back to the unity editor via callback.

Author: UnityAlex

mono/metadata/image.c

@@ -1345,7 +1345,10 @@ do_mono_image_load (MonoImage *image, MonoImageOpenStatus *status,
 invalid_image:
 	if (errors) {
 		MonoVerifyInfo *info = (MonoVerifyInfo *)errors->data;
-		g_warning ("Could not load image %s due to %s", image->name, info->message);
+		char* log_message = g_strdup_printf("Could not load image %s due to %s\nRun the peverify utility against this for more information.", image->name, info->message);
+		if (!mono_unity_log_error_to_editor(log_message))
+			g_warning (log_message);
+		g_free(log_message);
 		mono_free_verify_list (errors);
 	}
 	MONO_PROFILER_RAISE (image_failed, (image));

mono/metadata/unity-utils.c

@@ -976,6 +976,23 @@ MONO_API int mono_unity_gc_is_disabled()
 #endif	
 }
 
+// Logging
+static UnityLogErrorCallback editorLoggingCallback;
+MONO_API void mono_unity_set_editor_logging_callback(UnityLogErrorCallback callback)
+{
+	editorLoggingCallback = callback;
+}
+
+gboolean mono_unity_log_error_to_editor(const char *message)
+{
+	if (editorLoggingCallback)
+	{
+		editorLoggingCallback(message);
+		return TRUE;
+	}
+	return FALSE;
+}
+
 MONO_API void 
 mono_unity_install_unitytls_interface(unitytls_interface_struct* callbacks)
 {

mono/metadata/unity-utils.h

@@ -169,6 +169,10 @@ MONO_API void mono_unity_gc_disable();
 // Deprecated. Remove when Unity has switched to mono_unity_gc_set_mode
 MONO_API int mono_unity_gc_is_disabled();
 
+// logging
+typedef void (*UnityLogErrorCallback) (const char *message);
+MONO_API void mono_unity_set_editor_logging_callback(UnityLogErrorCallback callback);
+gboolean mono_unity_log_error_to_editor(const char *message);
 
 //misc
 MonoAssembly* mono_unity_assembly_get_mscorlib();