From 04afb8f665bc21e53c24fda65aef84d7d292f91c Mon Sep 17 00:00:00 2001
From: morkt <morkt@users.noreply.github.com>
Date: Thu, 25 Oct 2018 17:00:54 +0400
Subject: [PATCH] (Legacy): added 'Penguin Works' archives.

---
 Legacy/PenguinWorks/ArcPAC.cs | 104 ++++++++++++++++++++++++++++++++++
 1 file changed, 104 insertions(+)
 create mode 100644 Legacy/PenguinWorks/ArcPAC.cs

diff --git a/Legacy/PenguinWorks/ArcPAC.cs b/Legacy/PenguinWorks/ArcPAC.cs
new file mode 100644
index 00000000..bc185519
--- /dev/null
+++ b/Legacy/PenguinWorks/ArcPAC.cs
@@ -0,0 +1,104 @@
+//! \file       ArcPAC.cs
+//! \date       2018 Oct 21
+//! \brief      Penguin Works 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.Formats.UMeSoft;
+
+// [020809][Penguin Works] Ryouki no Ori Dai 4 Shou
+
+namespace GameRes.Formats.PenguinWorks
+{
+    [Export(typeof(ArchiveFormat))]
+    public class PacOpener : ArchiveFormat
+    {
+        public override string         Tag { get { return "PAC/PENGUIN"; } }
+        public override string Description { get { return "Penguin Works resource archive"; } }
+        public override uint     Signature { get { return 0; } }
+        public override bool  IsHierarchic { get { return false; } }
+        public override bool      CanWrite { get { return false; } }
+
+        static readonly Dictionary<string, string> ContentFormats = new Dictionary<string, string> {
+            { "TAK", "BIN" },
+            { "VIS", "BMP" },
+            { "EFT", "WAV" },
+            { "BGM", "STR" },
+        };
+
+        public override ArcFile TryOpen (ArcView file)
+        {
+            if (!file.Name.HasExtension (".pac"))
+                return null;
+            int count = file.View.ReadInt32 (0);
+            if (!IsSaneCount (count))
+                return null;
+            var base_name = Path.GetFileNameWithoutExtension (file.Name).ToUpperInvariant();
+            var name_format = base_name + "{0:D4}";
+            if (ContentFormats.ContainsKey (base_name))
+                name_format += '.' + ContentFormats[base_name];
+
+            uint index_offset = 4;
+            var dir = new List<Entry> (count);
+            for (int i = 0; i < count; ++i)
+            {
+                uint id = file.View.ReadUInt32 (index_offset);
+                var name = string.Format (name_format, id);
+                var entry = FormatCatalog.Instance.Create<PackedEntry> (name);
+                entry.Offset = file.View.ReadUInt32 (index_offset+4);
+                entry.Size   = file.View.ReadUInt32 (index_offset+8);
+                if (!entry.CheckPlacement (file.MaxOffset))
+                    return null;
+                dir.Add (entry);
+                index_offset += 12;
+            }
+            return new ArcFile (file, this, dir);
+        }
+
+        public override Stream OpenEntry (ArcFile arc, Entry entry)
+        {
+            var pent = (PackedEntry)entry;
+            var input = arc.File.CreateStream (entry.Offset, entry.Size);
+            if (!pent.IsPacked)
+            {
+                var header = input.ReadHeader (13);
+                if (!header.AsciiEqual (2, "ike"))
+                {
+                    input.Position = 0;
+                    return input;
+                }
+                pent.IsPacked = true;
+                pent.UnpackedSize = (uint)IkeReader.DecodeSize (header[10], header[11], header[12]);
+            }
+            using (input)
+            {
+                input.Position = 13;
+                var reader = new IkeReader (input, (int)pent.UnpackedSize);
+                var data = reader.Unpack();
+                return new BinMemoryStream (data, entry.Name);
+            }
+        }
+    }
+}