(Legacy): bunch of formats.

(GSX): K5 archives + K4 images.
(HyperWorks): G images.
(IDA): better support packed entries.
(Logg): ARF, MBM archives, FRM images.
(Omi): DAT archives.
(Rare): X archives.
(RHSS): 'CRG' archives.
(SplushWave): better SWG images support.

Legacy/Rhss/ArcCRG.cs

@@ -0,0 +1,83 @@
+//! \file       ArcCRG.cs
+//! \date       2023 Aug 28
+//! \brief      Raishū Hyōjun Script System resource archive.
+//
+// Copyright (C) 2023 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 GameRes.Compression;
+using System.Collections.Generic;
+using System.ComponentModel.Composition;
+using System.IO;
+
+namespace GameRes.Formats.Rhss
+{
+    [Export(typeof(ArchiveFormat))]
+    public class PakOpener : ArchiveFormat
+    {
+        public override string         Tag => "DAT/CRG";
+        public override string Description => "RHSS engine resource archive";
+        public override uint     Signature => 0x00475243; // 'CRG'
+        public override bool  IsHierarchic => false;
+        public override bool      CanWrite => false;
+
+        public override ArcFile TryOpen (ArcView file)
+        {
+            int count = file.View.ReadInt32 (4);
+            if (!IsSaneCount (count))
+                return null;
+            uint index_pos = 8;
+            var dir = new List<Entry> (count);
+            for (int i = 0; i < count; ++i)
+            {
+                var name = file.View.ReadString (index_pos+8, 0x30);
+                var entry = Create<PackedEntry> (name);
+                entry.Offset = file.View.ReadUInt32 (index_pos);
+                entry.Size   = file.View.ReadUInt32 (index_pos+4);
+                if (!entry.CheckPlacement (file.MaxOffset))
+                    return null;
+                dir.Add (entry);
+                index_pos += 60;
+            }
+            return new ArcFile (file, this, dir);
+        }
+
+        public override Stream OpenEntry (ArcFile arc, Entry entry)
+        {
+            var pent = entry as PackedEntry;
+            if (null != pent)
+            {
+                if (!pent.IsPacked && arc.File.View.AsciiEqual (entry.Offset, "CMP\0"))
+                {
+                    pent.IsPacked = true;
+                    pent.UnpackedSize = arc.File.View.ReadUInt32 (entry.Offset + 0x4C);
+                }
+                if (pent.IsPacked)
+                {
+                    Stream input = arc.File.CreateStream (entry.Offset+0x50, entry.Size-0x50);
+                    input = new ZLibStream (input, CompressionMode.Decompress);
+                    return new XoredStream (input, 0xFF);
+                }
+            }
+            return base.OpenEntry (arc, entry);
+        }
+    }
+}