Adpack32 archive implementation.

ArcFormats/ArcADPACK.cs

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+//! \file       ArcADPACK.cs
+//! \date       Sun Feb 15 09:25:28 2015
+//! \brief      ADPACK32 archive format implementation.
+//
+// Copyright (C) 2015 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;
+using GameRes.Utility;
+
+namespace GameRes.Formats.AdPack
+{
+    [Export(typeof(ArchiveFormat))]
+    public class PakOpener : ArchiveFormat
+    {
+        public override string         Tag { get { return "ADPACK32"; } }
+        public override string Description { get { return "Active Soft resource archive"; } }
+        public override uint     Signature { get { return 0x41504441; } } // "ADPA"
+        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)
+        {
+            if (!file.View.AsciiEqual (4, "CK32"))
+                return null;
+            int count = file.View.ReadInt32 (12) - 1;
+            if (count <= 0 || count > 0xfffff)
+                return null;
+            uint index_size = (uint)(0x20 * count);
+            if (index_size > file.View.Reserve (0x10, index_size))
+                return null;
+            var dir = new List<Entry> ((int)count);
+            long index_offset = 0x10;
+            for (uint i = 0; i < count; ++i)
+            {
+                string name = file.View.ReadString (index_offset, 0x18);
+                var entry = FormatCatalog.Instance.CreateEntry (name);
+                uint offset = file.View.ReadUInt32 (index_offset+0x1c);
+                uint next_offset = file.View.ReadUInt32 (index_offset+0x20+0x1c);
+                entry.Size = next_offset - offset;
+                entry.Offset = offset;
+                if (!entry.CheckPlacement (file.MaxOffset))
+                    return null;
+                dir.Add (entry);
+                index_offset += 0x20;
+            }
+            return new ArcFile (file, this, dir);
+        }
+    }
+}