Start of ContentManager

GlitchyEngine/src/Content/ContentManager.bf

@@ -0,0 +1,61 @@
+using System;
+using System.IO;
+using xxHash;
+
+namespace GlitchyEngine.Content
+{
+	class ContentId
+	{
+		private readonly String _string;
+		private readonly XXH64_hash _hash;
+
+		public String String => _string;
+		public XXH64_hash Hash => _hash;
+
+		[AllowAppend]
+		public this(StringView id)
+		{
+			String str = append String(id);
+
+		    _string = str;
+
+		    _hash = xxHash.ComputeHash(id);
+		}
+	}
+
+	interface IContentManager
+	{
+		Stream GetFile(String filename);
+	}
+
+	class ContentManager : IContentManager
+	{
+		private String _contentRoot;
+
+		[AllowAppend]
+		public this(String contentRoot)
+		{
+			String cntRoot = append String(contentRoot);
+			_contentRoot = cntRoot;
+
+			Runtime.Assert(Directory.Exists(contentRoot), "Content root directory doesn't exist.");
+		}
+
+		public Stream GetFile(String filename)
+		{
+			String fullpath = scope .(_contentRoot.Length + 1 + filename.Length);
+			Path.InternalCombine(fullpath, _contentRoot, filename);
+
+			FileStream stream = new FileStream();
+			var result = stream.Open(fullpath, .Read, .Read);
+
+			if (result case .Err(let error))
+			{
+				Log.EngineLogger.Error($"Failed to open file \"{fullpath}\". Error: {error}");
+				return null;
+			}
+
+			return stream;
+		}
+	}
+}