Ail (?) resource archives implementation.

ArcFormats/ArcAil.cs

@@ -0,0 +1,72 @@
+//! \file       ArcAil.cs
+//! \date       Mon Apr 20 21:21:49 2015
+//! \brief      Ail resource archives.
+//
+// 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.Ail
+{
+    [Export(typeof(ArchiveFormat))]
+    public class DatOpener : ArchiveFormat
+    {
+        public override string         Tag { get { return "DAT/Ail"; } }
+        public override string Description { get { return "Ail resource archive"; } }
+        public override uint     Signature { get { return 0; } }
+        public override bool  IsHierarchic { get { return false; } }
+        public override bool     CanCreate { get { return false; } }
+
+        public override ArcFile TryOpen (ArcView file)
+        {
+            int count = file.View.ReadInt32 (0);
+            if (count <= 0 || count > 0xfffff)
+                return null;
+            long offset = 4+count*4;
+            if (offset >= file.MaxOffset)
+                return null;
+            uint index_offset = 4;
+            var dir = new List<Entry>();
+            for (int i = 0; i < count; ++i)
+            {
+                uint size = file.View.ReadUInt32 (index_offset);
+                if (0 != size)
+                {
+                    var entry = AutoEntry.Create (file, offset+6, i.ToString ("D5"));
+                    entry.Size = size - 6;
+                    if (!entry.CheckPlacement (file.MaxOffset))
+                        return null;
+                    dir.Add (entry);
+                    offset += size;
+                }
+                index_offset += 4;
+            }
+            if (offset != file.MaxOffset)
+                return null;
+            return new ArcFile (file, this, dir);
+        }
+    }
+}