From e1173eb0d0c2fe21682d396b6eb50d91be3609d0 Mon Sep 17 00:00:00 2001
From: Christian Semmler <mail@csemmler.com>
Date: Sun, 8 Jun 2025 08:56:52 -0700
Subject: [PATCH] Add support for .ini loading

---
 ISLE/emscripten/filesystem.cpp | 29 +++++++++++++++++++++++++----
 ISLE/emscripten/filesystem.h   |  1 +
 ISLE/isleapp.cpp               |  5 +++++
 3 files changed, 31 insertions(+), 4 deletions(-)

diff --git a/ISLE/emscripten/filesystem.cpp b/ISLE/emscripten/filesystem.cpp
index 0aa8e6f0..03b5b582 100644
--- a/ISLE/emscripten/filesystem.cpp
+++ b/ISLE/emscripten/filesystem.cpp
@@ -8,10 +8,29 @@
 #include <SDL3/SDL_log.h>
 #include <emscripten/wasmfs.h>
 
+static backend_t opfs = nullptr;
+static backend_t fetchfs = nullptr;
+
+void Emscripten_SetupConfig(const char* p_iniConfig)
+{
+	if (!p_iniConfig || !*p_iniConfig) {
+		return;
+	}
+
+	opfs = wasmfs_create_opfs_backend();
+	MxString iniConfig = p_iniConfig;
+
+	char* parse = iniConfig.GetData();
+	while ((parse = SDL_strchr(++parse, '/'))) {
+		*parse = '\0';
+		wasmfs_create_directory(iniConfig.GetData(), 0644, opfs);
+		*parse = '/';
+	}
+}
+
 void Emscripten_SetupFilesystem()
 {
-	auto fetchfs =
-		wasmfs_create_fetch_backend((MxString(Emscripten_streamHost) + MxString("/LEGO")).GetData(), 512 * 1024);
+	fetchfs = wasmfs_create_fetch_backend((MxString(Emscripten_streamHost) + MxString("/LEGO")).GetData(), 512 * 1024);
 
 	wasmfs_create_directory("/LEGO", 0644, fetchfs);
 	wasmfs_create_directory("/LEGO/Scripts", 0644, fetchfs);
@@ -26,7 +45,7 @@ void Emscripten_SetupFilesystem()
 	wasmfs_create_directory("/LEGO/Scripts/Race", 0644, fetchfs);
 	wasmfs_create_directory("/LEGO/data", 0644, fetchfs);
 
-	const auto registerFile = [&fetchfs](const char* p_path) {
+	const auto registerFile = [](const char* p_path) {
 		MxString path = MxString(Emscripten_bundledPath) + MxString(p_path);
 		path.MapPathToFilesystem();
 
@@ -89,7 +108,9 @@ void Emscripten_SetupFilesystem()
 	registerFile("/LEGO/data/testinf.dta");
 
 	if (GameState()->GetSavePath() && *GameState()->GetSavePath()) {
-		auto opfs = wasmfs_create_opfs_backend();
+		if (!opfs) {
+			opfs = wasmfs_create_opfs_backend();
+		}
 
 		MxString savePath = GameState()->GetSavePath();
 		if (savePath.GetData()[savePath.GetLength() - 1] != '/') {
diff --git a/ISLE/emscripten/filesystem.h b/ISLE/emscripten/filesystem.h
index 5c356eb1..131df1c8 100644
--- a/ISLE/emscripten/filesystem.h
+++ b/ISLE/emscripten/filesystem.h
@@ -10,6 +10,7 @@ inline static const char* Emscripten_savePath = "/save";
 inline static const char* Emscripten_streamPath = "/";
 inline static const char* Emscripten_streamHost = ISLE_EMSCRIPTEN_HOST;
 
+void Emscripten_SetupConfig(const char* p_iniConfig);
 void Emscripten_SetupFilesystem();
 
 #endif // EMSCRIPTEN_FILESYSTEM_H
diff --git a/ISLE/isleapp.cpp b/ISLE/isleapp.cpp
index e54cb4db..83682f3b 100644
--- a/ISLE/isleapp.cpp
+++ b/ISLE/isleapp.cpp
@@ -721,6 +721,10 @@ bool IsleApp::LoadConfig()
 	}
 	SDL_Log("Reading configuration from \"%s\"", iniConfig);
 
+#ifdef __EMSCRIPTEN__
+	Emscripten_SetupConfig(iniConfig);
+#endif
+
 	dictionary* dict = iniparser_load(iniConfig);
 
 	// [library:config]
@@ -996,5 +1000,6 @@ MxResult IsleApp::ParseArguments(int argc, char** argv)
 			return FAILURE;
 		}
 	}
+
 	return SUCCESS;
 }