implemented Studio Nekopunch PACK archives.

ArcFormats/ArcFormats.csproj

@@ -99,6 +99,7 @@
     <Compile Include="ImageLZ.cs" />
     <Compile Include="KiriKiri\ChainReactionCrypt.cs" />
     <Compile Include="Liar\ImageLIM.cs" />
+    <Compile Include="Nekopunch\ArcPAK.cs" />
     <Compile Include="NitroPlus\ArcPAK.cs" />
     <Compile Include="MnoViolet\ImageDIF.cs" />
     <Compile Include="Nexas\ImageGRP.cs" />

ArcFormats/Nekopunch/ArcPAK.cs

@@ -0,0 +1,83 @@
+//! \file       ArcPAK.cs
+//! \date       Mon May 30 15:58:56 2016
+//! \brief      Studio Nekopunch resource archive.
+//
+// Copyright (C) 2016 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.Nekopunch
+{
+    [Export(typeof(ArchiveFormat))]
+    public class PakOpener : ArchiveFormat
+    {
+        public override string         Tag { get { return "PAK/NEKOPUNCH"; } }
+        public override string Description { get { return "Studio Nekopunch resource archive"; } }
+        public override uint     Signature { get { return 0x4B434150; } } // 'PACK'
+        public override bool  IsHierarchic { get { return false; } }
+        public override bool     CanCreate { get { return false; } }
+
+        public PakOpener ()
+        {
+            Extensions = new string[] { "pak" };
+        }
+
+        public override ArcFile TryOpen (ArcView file)
+        {
+            int count = file.View.ReadInt32 (4);
+            if (!IsSaneCount (count))
+                return null;
+            bool is_packed = 0 != file.View.ReadInt32 (8);
+            uint index_offset = 0x10;
+            var dir = new List<Entry> (count);
+            for (int i = 0; i < count; ++i)
+            {
+                var name = file.View.ReadString (index_offset, 0x40);
+                if (string.IsNullOrWhiteSpace (name))
+                    return null;
+                index_offset += 0x40;
+                var entry = FormatCatalog.Instance.Create<PackedEntry> (name);
+                entry.IsPacked = is_packed;
+                entry.UnpackedSize  = file.View.ReadUInt32 (index_offset);
+                entry.Size          = file.View.ReadUInt32 (index_offset+4);
+                entry.Offset        = file.View.ReadUInt32 (index_offset+8);
+                index_offset += 0x0C;
+                if (!entry.CheckPlacement (file.MaxOffset))
+                    return null;
+                dir.Add (entry);
+            }
+            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);
+        }
+    }
+}

supported.html

@@ -854,6 +854,9 @@ Nora to Oujo to Noraneko Heart<br/>
 Tsujidou-san no Jun'ai Road<br/>
 Tsujidou-san no Virgin Road<br/>
 </td></tr>
+<tr><td>*.pak</td><td><tt>PACK</tt></td><td>No</td><td>Studio Nekopunch</td><td>
+Uso x Mote ~Usonko Motemote-shon~<br/>
+</td></tr>
 </table>
 <p><a name="note-1" class="footnote">1</a> Non-encrypted only</p>
 </body>