From 835b1ad2dbd21f2f9701bff29bd62e1767c8bda3 Mon Sep 17 00:00:00 2001
From: morkt <morkt@users.noreply.github.com>
Date: Wed, 23 Jan 2019 06:02:18 +0400
Subject: [PATCH] (Legacy): DL1 archives.

---
 Legacy/Aaru/ArcDL1.cs | 89 +++++++++++++++++++++++++++++++++++++++++++
 Legacy/Legacy.csproj  |  1 +
 2 files changed, 90 insertions(+)
 create mode 100644 Legacy/Aaru/ArcDL1.cs

diff --git a/Legacy/Aaru/ArcDL1.cs b/Legacy/Aaru/ArcDL1.cs
new file mode 100644
index 00000000..fd753f18
--- /dev/null
+++ b/Legacy/Aaru/ArcDL1.cs
@@ -0,0 +1,89 @@
+//! \file       ArcDL1.cs
+//! \date       2019 Jan 22
+//! \brief      C's ware resource archive.
+//
+// Copyright (C) 2019 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;
+
+// [980123][C's Ware] Divi-Dead
+
+namespace GameRes.Formats.Csware
+{
+    [Export(typeof(ArchiveFormat))]
+    public class Dl1Opener : ArchiveFormat
+    {
+        public override string         Tag { get { return "DL1"; } }
+        public override string Description { get { return "C's ware resource archive"; } }
+        public override uint     Signature { get { return 0x2E314C44; } } // 'DL1.0'
+        public override bool  IsHierarchic { get { return false; } }
+        public override bool      CanWrite { get { return false; } }
+
+        public override ArcFile TryOpen (ArcView file)
+        {
+            if (!file.View.AsciiEqual (4, "0\x1A"))
+                return null;
+            int count = file.View.ReadInt16 (8);
+            if (!IsSaneCount (count))
+                return null;
+            uint index_offset = file.View.ReadUInt32 (0xA);
+            if (index_offset >= file.MaxOffset)
+                return null;
+            uint data_offset = 0x10;
+            var dir = new List<Entry> (count);
+            for (int i = 0; i < count; ++i)
+            {
+                var name = file.View.ReadString (index_offset, 0xC);
+                var entry = Create<PackedEntry> (name);
+                entry.Offset = data_offset;
+                entry.Size = file.View.ReadUInt32 (index_offset+0xC);
+                if (!entry.CheckPlacement (file.MaxOffset))
+                    return null;
+                dir.Add (entry);
+                data_offset += entry.Size;
+                index_offset += 0x10;
+            }
+            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, "LZ"))
+                {
+                    pent.IsPacked = true;
+                    pent.UnpackedSize = arc.File.View.ReadUInt32 (entry.Offset+6);
+                }
+                if (!pent.IsPacked)
+                    return base.OpenEntry (arc, entry);
+            }
+            var input = arc.File.CreateStream (entry.Offset+10, entry.Size-10);
+            return new LzssStream (input);
+        }
+    }
+}
diff --git a/Legacy/Legacy.csproj b/Legacy/Legacy.csproj
index 50b1d0be..d41897d3 100644
--- a/Legacy/Legacy.csproj
+++ b/Legacy/Legacy.csproj
@@ -62,6 +62,7 @@
     <Reference Include="WindowsBase" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="Aaru\ArcDL1.cs" />
     <Compile Include="Aaru\ArcFL2.cs" />
     <Compile Include="Aaru\ArcFL3.cs" />
     <Compile Include="Aaru\ArcFL4.cs" />