Cleanup BTree

src/Umbraco.Web/PublishedCache/NuCache/DataSource/BTree.DictionaryOfCultureVariationSerializer.cs

@@ -0,0 +1,46 @@
+using System.Collections.Generic;
+using System.IO;
+using CSharpTest.Net.Serialization;
+using Umbraco.Core;
+
+namespace Umbraco.Web.PublishedCache.NuCache.DataSource
+{
+    internal class DictionaryOfCultureVariationSerializer : SerializerBase, ISerializer<IReadOnlyDictionary<string, CultureVariation>>
+    {
+        public IReadOnlyDictionary<string, CultureVariation> ReadFrom(Stream stream)
+        {
+            var dict = new Dictionary<string, CultureVariation>();
+
+            // read variations count
+            var pcount = PrimitiveSerializer.Int32.ReadFrom(stream);
+
+            // read each variation
+            for (var i = 0; i < pcount; i++)
+            {
+                var languageId = PrimitiveSerializer.String.ReadFrom(stream);
+                var cultureVariation = new CultureVariation { Name = ReadStringObject(stream) };
+                dict[languageId] = cultureVariation;
+            }
+            return dict;
+        }
+
+        private static readonly IReadOnlyDictionary<string, CultureVariation> Empty = new Dictionary<string, CultureVariation>();
+
+        public void WriteTo(IReadOnlyDictionary<string, CultureVariation> value, Stream stream)
+        {
+            var variations = value ?? Empty;
+
+            // write variations count
+            PrimitiveSerializer.Int32.WriteTo(variations.Count, stream);
+
+            // write each variation
+            foreach (var (culture, variation) in variations)
+            {
+                // fixme - it's weird we're dealing with cultures here, and languageId in properties
+
+                PrimitiveSerializer.String.WriteTo(culture, stream); // should never be null
+                WriteObject(variation.Name, stream); // write an object in case it's null (though... should not happen)
+            }
+        }
+    }
+}