From 9be57a39ed3cefbf0801c9daea4029fbe222065e Mon Sep 17 00:00:00 2001
From: morkt <muvluv.ru@gmail.com>
Date: Thu, 3 Sep 2015 17:40:10 +0400
Subject: [PATCH] miris archives implementation.

---
 ArcFormats/ArcFormats.csproj |  1 +
 ArcFormats/ArcMiris.cs       | 88 ++++++++++++++++++++++++++++++++++++
 supported.html               |  1 +
 3 files changed, 90 insertions(+)
 create mode 100644 ArcFormats/ArcMiris.cs

diff --git a/ArcFormats/ArcFormats.csproj b/ArcFormats/ArcFormats.csproj
index 56dcce63..98f08a57 100644
--- a/ArcFormats/ArcFormats.csproj
+++ b/ArcFormats/ArcFormats.csproj
@@ -62,6 +62,7 @@
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Amaterasu\ImageGRP.cs" />
+    <Compile Include="ArcMiris.cs" />
     <Compile Include="BitStream.cs" />
     <Compile Include="Emic\ArcPACK.cs" />
     <Compile Include="Emic\ImageMWP.cs" />
diff --git a/ArcFormats/ArcMiris.cs b/ArcFormats/ArcMiris.cs
new file mode 100644
index 00000000..cade373d
--- /dev/null
+++ b/ArcFormats/ArcMiris.cs
@@ -0,0 +1,88 @@
+//! \file       ArcMiris.cs
+//! \date       Thu Sep 03 13:12:53 2015
+//! \brief      Studio Miris archives implementation.
+//
+// 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 System;
+using System.Collections.Generic;
+using System.ComponentModel.Composition;
+using System.IO;
+using System.Text.RegularExpressions;
+using GameRes.Compression;
+using GameRes.Utility;
+
+namespace GameRes.Formats.Miris
+{
+    [Export(typeof(ArchiveFormat))]
+    public class DatOpener : ArchiveFormat
+    {
+        public override string         Tag { get { return "DAT/MIRIS"; } }
+        public override string Description { get { return "Studio Miris resource archive"; } }
+        public override uint     Signature { get { return 0; } }
+        public override bool  IsHierarchic { get { return false; } }
+        public override bool     CanCreate { get { return false; } }
+
+        public DatOpener ()
+        {
+            Extensions = new string[] { "dat" };
+        }
+
+        static readonly Regex IndexEntryRe = new Regex (@"\G([^,]+),(\d+),(\d+)#");
+
+        public override ArcFile TryOpen (ArcView file)
+        {
+            var base_dir = Path.GetDirectoryName (file.Name);
+            var base_name = Path.GetFileNameWithoutExtension (file.Name);
+            var list_file = VFS.CombinePath (base_dir, base_name+"l.dat");
+            if (!VFS.FileExists (list_file))
+                return null;
+            string index;
+            using (var ls = VFS.OpenStream (list_file))
+            using (var zls = new ZLibStream (ls, CompressionMode.Decompress))
+            using (var reader = new StreamReader (zls, Encodings.cp932))
+            {
+                index = reader.ReadToEnd();
+            }
+            if (string.IsNullOrEmpty (index))
+                return null;
+
+            var dir = new List<Entry>();
+            var match = IndexEntryRe.Match (index);
+            while (match.Success)
+            {
+                var entry = new Entry {
+                    Name    = match.Groups[1].Value,
+                    Offset  = UInt32.Parse (match.Groups[3].Value),
+                    Size    = UInt32.Parse (match.Groups[2].Value),
+                };
+                if (!entry.CheckPlacement (file.MaxOffset))
+                    return null;
+                dir.Add (entry);
+                match = match.NextMatch();
+            }
+            if (0 == dir.Count)
+                return null;
+            return new ArcFile (file, this, dir);
+        }
+    }
+}
diff --git a/supported.html b/supported.html
index 9994c6c8..9fd32bbc 100644
--- a/supported.html
+++ b/supported.html
@@ -370,6 +370,7 @@ Majiresu!! ~Omatase Little Wing~<br/>
 Futamajo<br/>
 </td></tr>
 <tr class="odd"><td>*.bmp</td><td><tt>MWP</tt></td><td>No</td></tr>
+<tr><td>*.dat+*l.dat</td><td>-</td><td>No</td><td>Studio Miris</td><td>Tetsuwan Gacchu!</td></tr>
 </table>
 <p><a name="note-1" class="footnote">1</a> Non-encrypted only</p>
 </body>