From 148d060d0b67c8832532010f6c750f6f1f856fe1 Mon Sep 17 00:00:00 2001
From: morkt <morkt@users.noreply.github.com>
Date: Fri, 13 Apr 2018 09:42:14 +0400
Subject: [PATCH] implemented Studio Sakura archives.

---
 ArcFormats/ArcFormats.csproj      |  1 +
 ArcFormats/StudioSakura/ArcDAT.cs | 82 +++++++++++++++++++++++++++++++
 2 files changed, 83 insertions(+)
 create mode 100644 ArcFormats/StudioSakura/ArcDAT.cs

diff --git a/ArcFormats/ArcFormats.csproj b/ArcFormats/ArcFormats.csproj
index 46027ae0..7ff5ba71 100644
--- a/ArcFormats/ArcFormats.csproj
+++ b/ArcFormats/ArcFormats.csproj
@@ -229,6 +229,7 @@
     <Compile Include="Seraphim\ArcVoice.cs" />
     <Compile Include="ShiinaRio\ArcWARC1.0.cs" />
     <Compile Include="ShiinaRio\ImageCHD.cs" />
+    <Compile Include="StudioSakura\ArcDAT.cs" />
     <Compile Include="Silky\ImageGRD.cs" />
     <Compile Include="Slg\ArcSPD.cs" />
     <Compile Include="Software House Parsley\ArcCG.cs" />
diff --git a/ArcFormats/StudioSakura/ArcDAT.cs b/ArcFormats/StudioSakura/ArcDAT.cs
new file mode 100644
index 00000000..ff353a8c
--- /dev/null
+++ b/ArcFormats/StudioSakura/ArcDAT.cs
@@ -0,0 +1,82 @@
+//! \file       ArcDAT.cs
+//! \date       2018 Apr 12
+//! \brief      Studio Sakura 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;
+using System.Collections.Generic;
+using System.ComponentModel.Composition;
+using System.IO;
+using GameRes.Compression;
+
+namespace GameRes.Formats.StudioSakura
+{
+    [Export(typeof(ArchiveFormat))]
+    public class DatOpener : ArchiveFormat
+    {
+        public override string         Tag { get { return "DAT/SAKURA"; } }
+        public override string Description { get { return "Studio Sakura resource archive"; } }
+        public override uint     Signature { get { return 0; } }
+        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 (0);
+            if (!IsSaneCount (count))
+                return null;
+
+            uint index_offset = 0x20;
+            long data_offset  = index_offset + count * 0x110;
+            var dir = new List<Entry> (count);
+            for (int i = 0; i < count; ++i)
+            {
+                var name = file.View.ReadString (index_offset, 0x100);
+                var entry = new PackedEntry();
+                entry.IsPacked = name.HasExtension (".pr3");
+                if (entry.IsPacked)
+                    name = name.Substring (0, name.Length-4);
+                entry.Name   = name;
+                entry.Type   = FormatCatalog.Instance.GetTypeFromName (name);
+                entry.Size   = file.View.ReadUInt32 (index_offset+0x100);
+                entry.Offset = file.View.ReadUInt32 (index_offset+0x104);
+                entry.UnpackedSize = entry.Size;
+                if (entry.Offset < data_offset || entry.Offset > file.MaxOffset)
+                    return null;
+                dir.Add (entry);
+                index_offset += 0x110;
+            }
+            return new ArcFile (file, this, dir);
+        }
+
+        public override Stream OpenEntry (ArcFile arc, Entry entry)
+        {
+            var pent = entry as PackedEntry;
+            if (null == pent || !arc.File.View.AsciiEqual (entry.Offset, "ACMPRS03"))
+                return base.OpenEntry (arc, entry);
+            pent.Size = arc.File.View.ReadUInt32 (entry.Offset+0x14);
+            var input = arc.File.CreateStream (entry.Offset+0x24, entry.Size);
+            return new LzssStream (input);
+        }
+    }
+}