implemented Tmr-Hiro PAC archives.

ArcFormats/Tmr-Hiro/ArcPAC.cs

@@ -0,0 +1,142 @@
+//! \file       ArcPAC.cs
+//! \date       Wed Dec 23 15:37:30 2015
+//! \brief      Tmr-Hiro ADV System 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 GameRes.Utility;
+using System.Collections.Generic;
+using System.ComponentModel.Composition;
+using System.IO;
+
+namespace GameRes.Formats.TmrHiro
+{
+    [Export(typeof(ArchiveFormat))]
+    public class PacOpener : ArchiveFormat
+    {
+        public override string         Tag { get { return "PAC/TMR-HIRO"; } }
+        public override string Description { get { return "Tmr-Hiro ADV System resource archive"; } }
+        public override uint     Signature { get { return 0; } }
+        public override bool  IsHierarchic { get { return false; } }
+        public override bool     CanCreate { get { return false; } }
+
+        public PacOpener ()
+        {
+            Extensions = new string[] { "pac" };
+        }
+
+        public override ArcFile TryOpen (ArcView file)
+        {
+            int count = file.View.ReadInt16 (0);
+            if (!IsSaneCount (count))
+                return null;
+            uint name_length = file.View.ReadByte (2);
+            if (0 == name_length)
+                return null;
+            uint data_offset = file.View.ReadUInt32 (3);
+            if (data_offset >= file.MaxOffset)
+                return null;
+            int version;
+            uint index_size = 7 + (name_length + 8) * (uint)count;
+            if (data_offset == index_size)
+                version = 1;
+            else if (data_offset == index_size + 4 * (uint)count)
+                version = 2;
+            else
+                return null;
+
+            var dir = new List<Entry> (count);
+            uint index_offset = 7;
+            for (int i = 0; i < count; ++i)
+            {
+                var name = file.View.ReadString (index_offset, name_length);
+                index_offset += name_length;
+                var entry = new Entry { Name = name };
+                if (1 == version)
+                {
+                    entry.Offset = file.View.ReadUInt32 (index_offset) + data_offset;
+                    entry.Size   = file.View.ReadUInt32 (index_offset+4);
+                    index_offset += 8;
+                }
+                else
+                {
+                    entry.Offset = file.View.ReadInt64 (index_offset) + data_offset;
+                    entry.Size   = file.View.ReadUInt32 (index_offset+8);
+                    index_offset += 12;
+                }
+                if (!entry.CheckPlacement (file.MaxOffset))
+                    return null;
+                dir.Add (entry);
+            }
+            var arc_name = Path.GetFileNameWithoutExtension (file.Name).ToLower();
+            foreach (var entry in dir)
+            {
+                var signature = file.View.ReadUInt32 (entry.Offset);
+                if (0x5367674F == signature) // 'OggS'
+                {
+                    entry.Name = Path.ChangeExtension (entry.Name, "ogg");
+                    entry.Type = "audio";
+                }
+                else if ((((signature & 0xFF) == 1 || (signature & 0xFF) == 2)) && "grd" == arc_name)
+                {
+                    entry.Name = Path.ChangeExtension (entry.Name, "grd");
+                    entry.Type = "image";
+                }
+                else if (0x44 == signature && entry.Size-9 == file.View.ReadUInt32 (entry.Offset+5))
+                {
+                    entry.Type = "audio";
+                }
+                else if (6 == file.View.ReadInt16 (entry.Offset+4) && 0x140050 == file.View.ReadUInt32 (entry.Offset+6))
+                {
+                    entry.Type = "script";
+                    if ("srp" == arc_name)
+                        entry.Name = Path.ChangeExtension (entry.Name, "srp");
+                }
+            }
+            return new ArcFile (file, this, dir);
+        }
+
+        public override Stream OpenEntry (ArcFile arc, Entry entry)
+        {
+            if ("script" != entry.Type
+                || 6 != arc.File.View.ReadInt16 (entry.Offset+4)
+                || 0x140050 != arc.File.View.ReadUInt32 (entry.Offset+6))
+                return base.OpenEntry (arc, entry);
+            int record_count = arc.File.View.ReadInt32 (entry.Offset);
+            var data = arc.File.View.ReadBytes (entry.Offset, entry.Size);
+            int pos = 4;
+            for (int i = 0; i < record_count; ++i)
+            {
+                int chunk_size = LittleEndian.ToUInt16 (data, pos) - 4;
+                pos += 6;
+                if (pos + chunk_size > data.Length)
+                    return base.OpenEntry (arc, entry);
+                for (int j = 0; j < chunk_size; ++j)
+                {
+                    data[pos] = Binary.RotByteR (data[pos], 4);
+                    ++pos;
+                }
+            }
+            return new MemoryStream (data);
+        }
+    }
+}