SettingsHandler: Add Open and Save member functions

Source/Core/Core/Boot/Boot_BS2Emu.cpp

@@ -196,18 +196,14 @@ bool CBoot::SetupWiiMemory(u64 ios_title_id)
 
   SettingsHandler gen;
   std::string serno;
-  std::string settings_Filename(
+  const std::string settings_file_path(
       Common::GetTitleDataPath(TITLEID_SYSMENU, Common::FROM_SESSION_ROOT) + WII_SETTING);
-  if (File::Exists(settings_Filename))
+  if (File::Exists(settings_file_path) && gen.Open(settings_file_path))
   {
-    File::IOFile settingsFileHandle(settings_Filename, "rb");
-    if (settingsFileHandle.ReadBytes((void*)gen.GetData(), SettingsHandler::SETTINGS_SIZE))
-    {
-      gen.Decrypt();
-      serno = gen.GetValue("SERNO");
-      gen.Reset();
-    }
-    File::Delete(settings_Filename);
+    serno = gen.GetValue("SERNO");
+    gen.Reset();
+
+    File::Delete(settings_file_path);
   }
 
   if (serno.empty() || serno == "000000000")
@@ -233,19 +229,15 @@ bool CBoot::SetupWiiMemory(u64 ios_title_id)
   gen.AddSetting("VIDEO", region_setting.video);
   gen.AddSetting("GAME", region_setting.game);
 
-  File::CreateFullPath(settings_Filename);
+  if (!gen.Save(settings_file_path))
   {
-    File::IOFile settingsFileHandle(settings_Filename, "wb");
-
-    if (!settingsFileHandle.WriteBytes(gen.GetData(), SettingsHandler::SETTINGS_SIZE))
-    {
-      PanicAlertT("SetupWiiMemory: Can't create setting.txt file");
-      return false;
-    }
-    // Write the 256 byte setting.txt to memory.
-    Memory::CopyToEmu(0x3800, gen.GetData(), SettingsHandler::SETTINGS_SIZE);
+    PanicAlertT("SetupWiiMemory: Can't create setting.txt file");
+    return false;
   }
 
+  // Write the 256 byte setting.txt to memory.
+  Memory::CopyToEmu(0x3800, gen.GetData(), SettingsHandler::SETTINGS_SIZE);
+
   INFO_LOG(BOOT, "Setup Wii Memory...");
 
   /*