implemented TPF archives.

ArcFormats/Nexas/ArcTPF.cs

@@ -0,0 +1,92 @@
+//! \file       ArcTPF.cs
+//! \date       2018 Jan 01
+//! \brief      TPF FILE archive implementation.
+//
+// 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;
+using GameRes.Compression;
+
+namespace GameRes.Formats.Giga
+{
+    internal class TpfEntry : PackedEntry
+    {
+        public uint InterimSize;
+        public byte Compression;
+    }
+
+    [Export(typeof(ArchiveFormat))]
+    public class TpfOpener : ArchiveFormat
+    {
+        public override string         Tag { get { return "TPF"; } }
+        public override string Description { get { return "Giga resource archive"; } }
+        public override uint     Signature { get { return 0x20465054; } } // 'TPF FILE'
+        public override bool  IsHierarchic { get { return false; } }
+        public override bool      CanWrite { get { return false; } }
+
+        public override ArcFile TryOpen (ArcView file)
+        {
+            if (!file.View.AsciiEqual (4, "FILE"))
+                return null;
+            int count = file.View.ReadInt32 (0xC);
+            if (!IsSaneCount (count))
+                return null;
+
+            uint index_offset = 0x10;
+            var dir = new List<Entry> (count);
+            for (int i = 0; i < count; ++i)
+            {
+                var name = file.View.ReadString (index_offset, 0x20);
+                byte compression = file.View.ReadByte (index_offset+0x23);
+                var entry = FormatCatalog.Instance.Create<TpfEntry> (name);
+                entry.Compression = compression;
+                entry.IsPacked = compression != 0;
+                entry.Offset = file.View.ReadUInt32 (index_offset+0x24);
+                entry.InterimSize = file.View.ReadUInt32 (index_offset+0x28);
+                entry.UnpackedSize = file.View.ReadUInt32 (index_offset+0x2C);
+                index_offset += 0x30;
+                if (entry.UnpackedSize != 0)
+                {
+                    entry.Size = (uint)(file.View.ReadUInt32 (index_offset+0x24) - entry.Offset);
+                    if (!entry.CheckPlacement (file.MaxOffset))
+                        return null;
+                    dir.Add (entry);
+                }
+            }
+            return new ArcFile (file, this, dir);
+        }
+
+        public override Stream OpenEntry (ArcFile arc, Entry entry)
+        {
+            Stream input = arc.File.CreateStream (entry.Offset, entry.Size);
+            var pent = entry as TpfEntry;
+            if (null == pent || !pent.IsPacked || pent.Compression > 2)
+                return input;
+            if (2 == pent.Compression)
+                input = new HuffmanStream (input);
+            return new LzssStream (input);
+        }
+    }
+}