C&C Remastered Map Editor

Initial commit of C&C Remastered Map Editor code

CnCTDRAMapEditor/Utility/GameTextManager.cs

@@ -0,0 +1,57 @@
+//
+// Copyright 2020 Electronic Arts Inc.
+//
+// The Command & Conquer Map Editor and corresponding source code is free 
+// software: you can redistribute it and/or modify it under the terms of 
+// the GNU General Public License as published by the Free Software Foundation, 
+// either version 3 of the License, or (at your option) any later version.
+
+// The Command & Conquer Map Editor and corresponding source code is distributed 
+// in the hope that it will be useful, but with permitted additional restrictions 
+// under Section 7 of the GPL. See the GNU General Public License in LICENSE.TXT 
+// distributed with this program. You should have received a copy of the 
+// GNU General Public License along with permitted additional restrictions 
+// with this program. If not, see https://github.com/electronicarts/CnC_Remastered_Collection
+using System.Collections.Generic;
+using System.IO;
+using System.Text;
+
+namespace MobiusEditor.Utility
+{
+    public class GameTextManager
+    {
+        private readonly Dictionary<string, string> gameText = new Dictionary<string, string>();
+
+        public string this[string textId] => gameText.TryGetValue(textId, out string text) ? text : textId;
+
+        public GameTextManager(MegafileManager megafileManager, string gameTextFile)
+        {
+            using (var stream = megafileManager.Open(gameTextFile))
+            using (var reader = new BinaryReader(stream))
+            using (var unicodeReader = new BinaryReader(stream, Encoding.Unicode))
+            using (var asciiReader = new BinaryReader(stream, Encoding.ASCII))
+            {
+                var numStrings = reader.ReadUInt32();
+                var stringSizes = new (uint textSize, uint idSize)[numStrings];
+                var strings = new string[numStrings];
+
+                for (var i = 0; i < numStrings; ++i)
+                {
+                    reader.ReadUInt32();
+                    stringSizes[i] = (reader.ReadUInt32(), reader.ReadUInt32());
+                }
+
+                for (var i = 0; i < numStrings; ++i)
+                {
+                    strings[i] = new string(unicodeReader.ReadChars((int)stringSizes[i].textSize));
+                }
+
+                for (var i = 0; i < numStrings; ++i)
+                {
+                    var textId = new string(asciiReader.ReadChars((int)stringSizes[i].idSize));
+                    gameText[textId] = strings[i];
+                }
+            }
+        }
+    }
+}