destination directory will be created if doesn't exist

BakingSheet.Converters.Csv/CsvSheetConverter.cs

@@ -111,6 +111,8 @@ protected override Task<bool> LoadData()
 
         protected override Task<bool> SaveData()
         {
+            _fileSystem.CreateDirectory(_loadPath);
+
             foreach (var tableItem in _dataTables)
             {
                 var file = Path.Combine(_loadPath, $"{tableItem.Key}.{_extension}");

BakingSheet.Converters.Json/JsonSheetConverter.cs

@@ -95,6 +95,8 @@ public async Task<bool> Export(SheetConvertingContext context)
         {
             var sheetProps = context.Container.GetSheetProperties();
 
+            _fileSystem.CreateDirectory(_loadPath);
+
             foreach (var prop in sheetProps)
             {
                 using (context.Logger.BeginScope(prop.Name))

BakingSheet.Tests/Utils/TestFileSystem.cs

@@ -40,6 +40,11 @@ public Stream OpenRead(string path)
             return files[path];
         }
 
+        public void CreateDirectory(string path)
+        {
+            // do nothing
+        }
+
         public Stream OpenWrite(string path)
         {
             files[path] = new MemoryStream();

BakingSheet/Src/Internal/FileSystem.cs

@@ -11,6 +11,8 @@ public interface IFileSystem
 
         bool Exists(string path);
         Stream OpenRead(string path);
+
+        void CreateDirectory(string path);
         Stream OpenWrite(string path);
     }
 
@@ -31,6 +33,11 @@ public Stream OpenRead(string path)
             return File.Open(path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
         }
 
+        public void CreateDirectory(string path)
+        {
+            Directory.CreateDirectory(path);
+        }
+
         public Stream OpenWrite(string path)
         {
             return File.Open(path, FileMode.Create, FileAccess.Write, FileShare.Read);

README.md

@@ -552,6 +552,10 @@ public class StreamingAssetFileSystem : IFileSystem
     public Stream OpenRead(string path)
         => BetterStreamingAssets.OpenRead(path);
 
+    // write access to streaming assets is not allowed
+    public void CreateDirectory(string path)
+        => throw new System.NotImplementedException();
+
     // write access to streaming assets is not allowed
     public Stream OpenWrite(string path)
         => throw new System.NotImplementedException();

UnityProject/Assets/Samples/002 - Import From Excel/Editor/ExcelPostprocessor.cs

@@ -20,8 +20,6 @@ static async void OnPostprocessAllAssets(string[] importedAssets, string[] delet
                 var excelPath = Path.GetDirectoryName(excelAsset);
                 var jsonPath = Path.Combine(Application.streamingAssetsPath, "Excel");
 
-                Directory.CreateDirectory(jsonPath);
-
                 var logger = new UnityLogger();
                 var sheetContainer = new SheetContainer(logger);
 

UnityProject/Assets/Samples/003 - Import From Google Sheet/Editor/GoogleSheetTools.cs

@@ -45,8 +45,6 @@ public static async void ConvertFromGoogle()
         {
             var jsonPath = Path.Combine(Application.streamingAssetsPath, "Google");
 
-            Directory.CreateDirectory(jsonPath);
-
             var googleConverter = new GoogleSheetConverter("1iWMZVI4FgtGbig4EgPIun_BRbzp4ulqRIzINZQl-AFI", GoogleCredential, TimeZoneInfo.Utc);
 
             var sheetContainer = new Google.SheetContainer(new UnityLogger());

UnityProject/Assets/Samples/004 - Import From CSV/Editor/CsvPostprocessor.cs

@@ -20,8 +20,6 @@ static async void OnPostprocessAllAssets(string[] importedAssets, string[] delet
                 var csvPath = Path.GetDirectoryName(csvAsset);
                 var resultPath = Path.Combine(Application.streamingAssetsPath, "CSV");
 
-                Directory.CreateDirectory(resultPath);
-
                 var logger = new UnityLogger();
                 var sheetContainer = new SheetContainer(logger);
 

UnityProject/Packages/com.cathei.bakingsheet/Runtime/Converters/Csv/CsvSheetConverter.cs

@@ -111,6 +111,8 @@ protected override Task<bool> LoadData()
 
         protected override Task<bool> SaveData()
         {
+            _fileSystem.CreateDirectory(_loadPath);
+
             foreach (var tableItem in _dataTables)
             {
                 var file = Path.Combine(_loadPath, $"{tableItem.Key}.{_extension}");

UnityProject/Packages/com.cathei.bakingsheet/Runtime/Converters/Json/JsonSheetConverter.cs

@@ -95,6 +95,8 @@ public async Task<bool> Export(SheetConvertingContext context)
         {
             var sheetProps = context.Container.GetSheetProperties();
 
+            _fileSystem.CreateDirectory(_loadPath);
+
             foreach (var prop in sheetProps)
             {
                 using (context.Logger.BeginScope(prop.Name))

UnityProject/Packages/com.cathei.bakingsheet/Runtime/Core/Internal/FileSystem.cs

@@ -11,6 +11,8 @@ public interface IFileSystem
 
         bool Exists(string path);
         Stream OpenRead(string path);
+
+        void CreateDirectory(string path);
         Stream OpenWrite(string path);
     }
 
@@ -31,6 +33,11 @@ public Stream OpenRead(string path)
             return File.Open(path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
         }
 
+        public void CreateDirectory(string path)
+        {
+            Directory.CreateDirectory(path);
+        }
+
         public Stream OpenWrite(string path)
         {
             return File.Open(path, FileMode.Create, FileAccess.Write, FileShare.Read);