Add dummy CTD encoders

OpenKh.Bbs/Messages/CtdEncoders.cs

@@ -0,0 +1,13 @@
+using OpenKh.Bbs.Messages.Internals;
+
+namespace OpenKh.Bbs.Messages
+{
+    public static class CtdEncoders
+    {
+        public static ICtdMessageEncoder International { get; } =
+            new InternationalCtdEncoder();
+
+        public static ICtdMessageEncoder Japanese { get; } =
+            new InternationalCtdEncoder();
+    }
+}

OpenKh.Bbs/Messages/ICtdMessageDecode.cs

@@ -0,0 +1,7 @@
+namespace OpenKh.Bbs.Messages
+{
+    public interface ICtdMessageDecode
+    {
+        string Decode(byte[] data);
+    }
+}

OpenKh.Bbs/Messages/ICtdMessageEncode.cs

@@ -0,0 +1,7 @@
+namespace OpenKh.Bbs.Messages
+{
+    public interface ICtdMessageEncode
+    {
+        byte[] Encode(string text);
+    }
+}

OpenKh.Bbs/Messages/ICtdMessageEncoder.cs

@@ -0,0 +1,6 @@
+namespace OpenKh.Bbs.Messages
+{
+    public interface ICtdMessageEncoder : ICtdMessageDecode, ICtdMessageEncode
+    {
+    }
+}

OpenKh.Bbs/Messages/Internals/InternationalCtdEncoder.cs

@@ -0,0 +1,20 @@
+namespace OpenKh.Bbs.Messages.Internals
+{
+    internal class InternationalCtdEncoder : ICtdMessageEncoder
+    {
+        internal InternationalCtdEncoder()
+        {
+            throw new System.NotImplementedException();
+        }
+
+        public string Decode(byte[] data)
+        {
+            throw new System.NotImplementedException();
+        }
+
+        public byte[] Encode(string text)
+        {
+            throw new System.NotImplementedException();
+        }
+    }
+}

OpenKh.Bbs/Messages/Internals/JapaneseCtdEncoder.cs

@@ -0,0 +1,20 @@
+namespace OpenKh.Bbs.Messages.Internals
+{
+    internal class JapaneseCtdEncoder : ICtdMessageEncoder
+    {
+        internal JapaneseCtdEncoder()
+        {
+            throw new System.NotImplementedException();
+        }
+
+        public string Decode(byte[] data)
+        {
+            throw new System.NotImplementedException();
+        }
+
+        public byte[] Encode(string text)
+        {
+            throw new System.NotImplementedException();
+        }
+    }
+}