maybe...

src/anm2/anm2.cpp

@@ -23,7 +23,9 @@ namespace anm2ed::anm2
   {
     XMLDocument document;
 
-    if (document.LoadFile(path.string().c_str()) != XML_SUCCESS)
+    filesystem::File file{path, "rb"};
+
+    if (!file.get() || document.LoadFile(file.get()) != XML_SUCCESS)
     {
       if (errorString) *errorString = document.ErrorStr();
       return;
@@ -56,7 +58,9 @@ namespace anm2ed::anm2
     XMLDocument document;
     document.InsertFirstChild(to_element(document));
 
-    if (document.SaveFile(path.string().c_str()) != XML_SUCCESS)
+    filesystem::File file{path, "w"};
+
+    if (!file.get() || document.SaveFile(file.get()) != XML_SUCCESS)
     {
       if (errorString) *errorString = document.ErrorStr();
       return false;

src/util/filesystem_.cpp

@@ -20,6 +20,19 @@ namespace anm2ed::util::filesystem
     }
   }
 
+  File::File(const std::filesystem::path& path, const char* mode)
+  {
+#ifdef _WIN32
+    _wfopen_s(&this->internal, path.c_str(), mode);
+#else
+    this->internal = fopen(path.c_str(), mode);
+#endif
+  }
+
+  File::~File() { fclose(this->internal); }
+
+  FILE* File::get() { return internal; }
+
   std::filesystem::path path_preferences_get()
   {
     auto path = SDL_GetPrefPath(nullptr, "anm2ed");

src/util/filesystem_.h

@@ -14,6 +14,8 @@ namespace anm2ed::util::filesystem
 
   std::filesystem::path path_lower_case_backslash_handle(const std::filesystem::path&);
 
+  FILE* open(const std::filesystem::path&, const char*);
+
   class WorkingDirectory
   {
   public:
@@ -22,4 +24,14 @@ namespace anm2ed::util::filesystem
     WorkingDirectory(const std::filesystem::path&, bool = false);
     ~WorkingDirectory();
   };
+
+  class File
+  {
+  public:
+    FILE* internal{};
+
+    File(const std::filesystem::path&, const char*);
+    ~File();
+    FILE* get();
+  };
 }