From c9b753c88ec3d8a3cdb635e712b42d913af09b5a Mon Sep 17 00:00:00 2001
From: morkt <morkt@users.noreply.github.com>
Date: Sun, 2 Sep 2018 09:36:32 +0400
Subject: [PATCH] (Legacy): TTD archives.

---
 Legacy/Melonpan/ArcTTD.cs | 83 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100644 Legacy/Melonpan/ArcTTD.cs

diff --git a/Legacy/Melonpan/ArcTTD.cs b/Legacy/Melonpan/ArcTTD.cs
new file mode 100644
index 00000000..4809cf81
--- /dev/null
+++ b/Legacy/Melonpan/ArcTTD.cs
@@ -0,0 +1,83 @@
+//! \file       ArcTTD.cs
+//! \date       2018 Sep 02
+//! \brief      Melonpan 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 GameRes.Compression;
+
+// [030829][Melonpan] Himawari no Natsu ~Boku ga Eranda Ashita~
+
+namespace GameRes.Formats.Melonpan
+{
+    [Export(typeof(ArchiveFormat))]
+    public class TtdOpener : ArchiveFormat
+    {
+        public override string         Tag { get { return "TTD"; } }
+        public override string Description { get { return "Melonpan resource archive"; } }
+        public override uint     Signature { get { return 0x574357; } } // 'WCW'
+        public override bool  IsHierarchic { get { return false; } }
+        public override bool      CanWrite { get { return false; } }
+
+        public override ArcFile TryOpen (ArcView file)
+        {
+            int count = file.View.ReadInt32 (4);
+            if (!IsSaneCount (count))
+                return null;
+            uint index_offset = 12;
+            var dir = new List<Entry> (count);
+            for (int i = 0; i < count; ++i)
+            {
+                uint size   = file.View.ReadUInt32 (index_offset);
+                uint offset = file.View.ReadUInt32 (index_offset+4);
+                var name = file.View.ReadString (index_offset+0xC, 0x20);
+                var entry = FormatCatalog.Instance.Create<PackedEntry> (name);
+                entry.Offset = offset;
+                entry.Size   = size;
+                if (!entry.CheckPlacement (file.MaxOffset))
+                    return null;
+                dir.Add (entry);
+                index_offset += 0x2C;
+            }
+            return new ArcFile (file, this, dir);
+        }
+
+        public override Stream OpenEntry (ArcFile arc, Entry entry)
+        {
+            var pent = (PackedEntry)entry;
+            if (!pent.IsPacked)
+            {
+                if (!arc.File.View.AsciiEqual (entry.Offset, "DSFF"))
+                    return base.OpenEntry (arc, entry);
+                pent.IsPacked = true;
+                pent.UnpackedSize = arc.File.View.ReadUInt32 (entry.Offset+4);
+            }
+            var input = arc.File.CreateStream (entry.Offset+8, entry.Size-8);
+            var lzss = new LzssStream (input);
+            lzss.Config.FrameInitPos = 0xFF0;
+            return lzss;
+        }
+    }
+}