feat: HuneX initial support

ArcFormats/HuneX/ArcHFA.cs

@@ -0,0 +1,58 @@
+//! \file       ArcHFA.cs
+//! \date       2026-01-18
+//! \brief      HUNEX General Game Engine resource archive.
+//
+// Copyright (C) 2026 by morkt
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+//
+
+using System.Collections.Generic;
+using System.ComponentModel.Composition;
+using System.IO;
+using GameRes.Utility;
+
+namespace GameRes.Formats.HuneX {
+    [Export(typeof(ArchiveFormat))]
+    public class HfaOpener : BGI.Arc2Opener {
+        public override string         Tag { get { return "HFA"; } }
+        public override string Description { get { return "HuneX general game engine resource archive"; } }
+        public override uint     Signature { get { return 0x454e5548; } } // "HUNE"
+        public override bool  IsHierarchic { get { return false; } }
+        public override bool      CanWrite { get { return false; } }
+
+        public HfaOpener() {
+            Extensions = new string[] { "hfa" };
+            ContainedFormats = new[] { "BGI", "CompressedBG", "BW", "SCR" };
+        }
+
+        public override ArcFile TryOpen(ArcView file) {
+            if (!file.View.AsciiEqual(4, "XGGEFA10"))
+                return null;
+            return Open(file);
+        }
+
+        public override Stream OpenEntry(ArcFile arc, Entry entry) {
+            if (!arc.File.View.AsciiEqual(entry.Offset, "LenZuCompressor"))
+                return base.OpenEntry(arc, entry);
+            var decoder = new LenZuDecoder(arc.File.View.ReadBytes(entry.Offset + 0x20, entry.Size - 0x20));
+            return new BinMemoryStream(decoder.Unpack());
+        }
+    }
+}