From 78e1ccc39daf21af473c56335dab59d527814013 Mon Sep 17 00:00:00 2001
From: morkt <morkt@users.noreply.github.com>
Date: Sun, 20 May 2018 08:10:59 +0400
Subject: [PATCH] implemented PKD archives.

---
 ArcFormats/AdvDx/ArcPKD.cs   | 89 ++++++++++++++++++++++++++++++++++++
 ArcFormats/ArcFormats.csproj |  1 +
 2 files changed, 90 insertions(+)
 create mode 100644 ArcFormats/AdvDx/ArcPKD.cs

diff --git a/ArcFormats/AdvDx/ArcPKD.cs b/ArcFormats/AdvDx/ArcPKD.cs
new file mode 100644
index 00000000..c8effa9f
--- /dev/null
+++ b/ArcFormats/AdvDx/ArcPKD.cs
@@ -0,0 +1,89 @@
+//! \file       ArcPKD.cs
+//! \date       2018 May 16
+//! \brief      AdvDX engine 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;
+using System.Collections.Generic;
+using System.ComponentModel.Composition;
+using System.IO;
+
+namespace GameRes.Formats.AdvDx
+{
+    internal class PkdArchive : ArcFile
+    {
+        public readonly byte Key;
+
+        public PkdArchive (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir, byte key)
+            : base (arc, impl, dir)
+        {
+            Key = key;
+        }
+    }
+
+    [Export(typeof(ArchiveFormat))]
+    public class PkdOpener : ArchiveFormat
+    {
+        public override string         Tag { get { return "PKD"; } }
+        public override string Description { get { return "AdvDX engine resource archive"; } }
+        public override uint     Signature { get { return 0x4B434150; } } // 'PACK'
+        public override bool  IsHierarchic { get { return true; } }
+        public override bool      CanWrite { get { return false; } }
+
+        public override ArcFile TryOpen (ArcView file)
+        {
+            int count = file.View.ReadInt32 (4);
+            if (!IsSaneCount (count))
+                return null;
+            byte key = file.View.ReadByte (0x87);
+            using (var input = file.CreateStream (8, 0x88 * (uint)count))
+            using (var dec = new XoredStream (input, key))
+            using (var index = new BinaryStream (dec, file.Name))
+            {
+                var dir = new List<Entry> (count);
+                for (int i = 0; i < count; ++i)
+                {
+                    var name = index.ReadCString (0x80);
+                    if (string.IsNullOrWhiteSpace (name))
+                        return null;
+                    var entry = FormatCatalog.Instance.Create<Entry> (name);
+                    entry.Size   = index.ReadUInt32();
+                    entry.Offset = index.ReadUInt32();
+                    if (!entry.CheckPlacement (file.MaxOffset))
+                        return null;
+                    dir.Add (entry);
+                }
+                return new PkdArchive (file, this, dir, key);
+            }
+        }
+
+        public override Stream OpenEntry (ArcFile arc, Entry entry)
+        {
+            var pkd = arc as PkdArchive;
+            var input = arc.File.CreateStream (entry.Offset, entry.Size);
+            if (null == pkd || 0 == pkd.Key)
+                return input;
+            return new XoredStream (input, pkd.Key);
+        }
+    }
+}
diff --git a/ArcFormats/ArcFormats.csproj b/ArcFormats/ArcFormats.csproj
index 51f9fe9f..d0cdf557 100644
--- a/ArcFormats/ArcFormats.csproj
+++ b/ArcFormats/ArcFormats.csproj
@@ -94,6 +94,7 @@
     <Compile Include="Abogado\ImageKG.cs" />
     <Compile Include="Actgs\ArcCG.cs" />
     <Compile Include="Actgs\ArcDAT.cs" />
+    <Compile Include="AdvDx\ArcPKD.cs" />
     <Compile Include="AdvScripter\ArcPAK.cs" />
     <Compile Include="AdvSys\ArcAdvSys3.cs" />
     <Compile Include="AdvSys\ImageGWD.cs" />