(Legacy): MPK archives.

Legacy/Tako/ArcMPK.cs

@@ -0,0 +1,118 @@
+//! \file       ArcMPK.cs
+//! \date       2018 Aug 11
+//! \brief      Stdio Tako 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.Collections.Generic;
+using System.ComponentModel.Composition;
+using System.IO;
+using System.Linq;
+
+namespace GameRes.Formats.Tako
+{
+    [Export(typeof(ArchiveFormat))]
+    public class MpkOpener : ArchiveFormat
+    {
+        public override string         Tag { get { return "MPK/HG"; } }
+        public override string Description { get { return "Studio Tako resource archive"; } }
+        public override uint     Signature { get { return 0x502D4748; } } // 'HG-P'
+        public override bool  IsHierarchic { get { return false; } }
+        public override bool      CanWrite { get { return false; } }
+
+        public MpkOpener ()
+        {
+            Signatures = new uint[] { 0x502D4748, 0x572D4748 };
+        }
+
+        public override ArcFile TryOpen (ArcView file)
+        {
+            int count = file.View.ReadInt32 (4);
+            if (!IsSaneCount (count) || VFS.IsPathEqualsToFileName (file.Name, "00.mpk"))
+                return null;
+            var list_name = VFS.ChangeFileName (file.Name, "00.mpk");
+            List<string> filelist;
+            if (VFS.FileExists (list_name))
+            {
+                using (var s = VFS.OpenStream (list_name))
+                using (var xs = new XoredStream (s, 0xA))
+                using (var reader = new StreamReader (xs, Encodings.cp932))
+                {
+                    filelist = new List<string> (count);
+                    string filename;
+                    while ((filename = reader.ReadLine()) != null)
+                        filelist.Add (filename);
+                }
+            }
+            else
+            {
+                var base_name = Path.GetFileNameWithoutExtension (file.Name);
+                filelist = Enumerable.Range (0, count).Select (x => string.Format ("{0}#{1:D4}", base_name, x)).ToList();
+            }
+            bool has_sizes = file.View.ReadByte (3) != 'P';
+            uint index_offset = 8;
+            uint record_size = has_sizes ? 8u : 4u;
+            var dir = new List<Entry> (count);
+            for (int i = 0; i < count; ++i)
+            {
+                var entry = FormatCatalog.Instance.Create<Entry> (filelist[i]);
+                entry.Offset = file.View.ReadUInt32 (index_offset);
+                if (has_sizes)
+                {
+                    entry.Size = file.View.ReadUInt32 (index_offset+4);
+                    if (!entry.CheckPlacement (file.MaxOffset))
+                        return null;
+                }
+                else if (entry.Offset > file.MaxOffset)
+                    return null;
+                dir.Add (entry);
+                index_offset += record_size;
+            }
+            if (!has_sizes)
+            {
+                for (int i = 1; i < count; ++i)
+                {
+                    dir[i-1].Size = (uint)(dir[i].Offset - dir[i-1].Offset);
+                }
+                dir[dir.Count-1].Size = (uint)(file.MaxOffset - dir[dir.Count-1].Offset);
+            }
+            return new ArcFile (file, this, dir);
+        }
+
+        public override IImageDecoder OpenImage (ArcFile arc, Entry entry)
+        {
+            var header = new byte[2] { (byte)'B', (byte)'M' };
+            Stream input = arc.File.CreateStream (entry.Offset, entry.Size);
+            input = new PrefixStream (header, input);
+            var bin = new BinaryStream (input, entry.Name);
+            try
+            {
+                return new ImageFormatDecoder (bin);
+            }
+            catch
+            {
+                bin.Dispose();
+                throw;
+            }
+        }
+    }
+}