Implements proper save path (#386)

* initial save path implementation

* fix savedatatype offset, remove incomplete createsavedata implimentation

* address nits

* fix crash if npdm is not found

* made saveinfo readonly, other stuff

* remove context param from saveinfo contructor

* fix style

* remove whitespace

1 files changed, 46 insertions, 0 deletions

diff --git a/Ryujinx.HLE/FileSystem/SaveHelper.cs b/Ryujinx.HLE/FileSystem/SaveHelper.cs
new file mode 100644
index 00000000..67f01016
--- /dev/null
+++ b/Ryujinx.HLE/FileSystem/SaveHelper.cs
@@ -0,0 +1,46 @@
+using Ryujinx.HLE.HOS;
+using System.IO;
+
+using static Ryujinx.HLE.FileSystem.VirtualFileSystem;
+
+namespace Ryujinx.HLE.FileSystem
+{
+    static class SaveHelper
+    {
+        public static string GetSavePath(SaveInfo SaveMetaData, ServiceCtx Context)
+        {
+            string BaseSavePath   = NandPath;
+            long   CurrentTitleId = SaveMetaData.TitleId;
+
+            switch (SaveMetaData.SaveSpaceId)
+            {
+                case SaveSpaceId.NandUser:
+                    BaseSavePath = UserNandPath;
+                    break;
+                case SaveSpaceId.NandSystem:
+                    BaseSavePath = SystemNandPath;
+                    break;
+                case SaveSpaceId.SdCard:
+                    BaseSavePath = Path.Combine(SdCardPath, "Nintendo");
+                    break;
+            }
+
+            BaseSavePath = Path.Combine(BaseSavePath, "save");
+
+            if (SaveMetaData.TitleId == 0 && SaveMetaData.SaveDataType == SaveDataType.SaveData)
+            {
+                if (Context.Process.MetaData != null)
+                {
+                    CurrentTitleId = Context.Process.MetaData.ACI0.TitleId;
+                }
+            }
+
+            string SavePath = Path.Combine(BaseSavePath,
+                SaveMetaData.SaveId.ToString("x16"),
+                SaveMetaData.UserId.ToString(),
+                SaveMetaData.SaveDataType == SaveDataType.SaveData ? CurrentTitleId.ToString("x16") : string.Empty);
+
+            return SavePath;
+        }
+    }
+}