From ac50e3244c73b07cf97f0caae62666e05f259bcc Mon Sep 17 00:00:00 2001
From: morkt <muvluv.ru@gmail.com>
Date: Sat, 20 Jan 2018 09:40:35 +0400
Subject: [PATCH] added nameless BIN resource archive implementation.

---
 ArcFormats/Misc/ArcBIN.cs | 120 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 120 insertions(+)
 create mode 100644 ArcFormats/Misc/ArcBIN.cs

diff --git a/ArcFormats/Misc/ArcBIN.cs b/ArcFormats/Misc/ArcBIN.cs
new file mode 100644
index 00000000..7ac7a105
--- /dev/null
+++ b/ArcFormats/Misc/ArcBIN.cs
@@ -0,0 +1,120 @@
+//! \file       ArcBIN.cs
+//! \date       2018 Jan 19
+//! \brief      Uncategorized resource archive.
+//
+// Copyright (C) 2018 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.Compression;
+
+namespace GameRes.Formats.Misc
+{
+    [Export(typeof(ArchiveFormat))]
+    public class BinOpener : ArchiveFormat
+    {
+        public override string         Tag { get { return "BIN/?"; } }
+        public override string Description { get { return "Uncategorized resource archive"; } }
+        public override uint     Signature { get { return 0; } }
+        public override bool  IsHierarchic { get { return false; } }
+        public override bool      CanWrite { get { return false; } }
+
+        public override ArcFile TryOpen (ArcView file)
+        {
+            int count = file.View.ReadInt32 (0);
+            if (!IsSaneCount (count))
+                return null;
+            uint first_offset = file.View.ReadUInt32 (4);
+            if (4 + count * 8 != first_offset)
+                return null;
+
+            var base_name = Path.GetFileNameWithoutExtension (file.Name);
+            bool is_msg = base_name == "msg";
+            uint index_offset = 4;
+            var dir = new List<Entry> (count);
+            for (int i = 0; i < count; ++i)
+            {
+                uint offset = file.View.ReadUInt32 (index_offset);
+                uint size   = file.View.ReadUInt32 (index_offset+4);
+                var entry = new PackedEntry {
+                    Name = string.Format ("{0}#{1:D5}", base_name, i),
+                    Offset = offset,
+                    Size = size,
+                };
+                if (!is_msg && !entry.CheckPlacement (file.MaxOffset))
+                    return null;
+                dir.Add (entry);
+                index_offset += 8;
+            }
+            foreach (PackedEntry entry in dir)
+            {
+                if (is_msg)
+                {
+                    uint size = file.View.ReadUInt32 (entry.Offset);
+                    entry.Offset += 4;
+                    entry.UnpackedSize = entry.Size;
+                    entry.Size = size;
+                    entry.IsPacked = true;
+                    if (!entry.CheckPlacement (file.MaxOffset))
+                        return null;
+                    continue;
+                }
+                uint pos = file.View.ReadUInt32 (entry.Offset+4);
+                if (pos > entry.Size)
+                    continue;
+                uint unpacked_size = file.View.ReadUInt32 (entry.Offset+8);
+                uint flags = unpacked_size >> 30;
+                unpacked_size &= 0x3FFFFFFF;
+                entry.IsPacked = 0 == flags;
+                uint signature = 0;
+                if (entry.IsPacked)
+                {
+                    entry.UnpackedSize = unpacked_size;
+                    entry.Size = file.View.ReadUInt32 (entry.Offset+pos);
+                    entry.Offset += pos + 4;
+                    if ((file.View.ReadByte (entry.Offset) & 0xF) == 0xF)
+                        signature = file.View.ReadUInt32 (entry.Offset+1);
+                }
+                else
+                {
+                    entry.Size = unpacked_size;
+                    entry.Offset += pos;
+                    signature = file.View.ReadUInt32 (entry.Offset);
+                }
+                var res = AutoEntry.DetectFileType (signature);
+                if (res != null)
+                    entry.ChangeType (res);
+            }
+            return new ArcFile (file, this, dir);
+        }
+
+        public override Stream OpenEntry (ArcFile arc, Entry entry)
+        {
+            var input = arc.File.CreateStream (entry.Offset, entry.Size);
+            var pent = entry as PackedEntry;
+            if (null == pent || !pent.IsPacked)
+                return input;
+            return new LzssStream (input);
+        }
+    }
+}