From 5292d3c9c8897633ce4ad7e98e6aa99233f5d9e1 Mon Sep 17 00:00:00 2001
From: ManicSteiner <manicsteiner@outlook.com>
Date: Thu, 14 Dec 2023 22:58:43 +0800
Subject: [PATCH] feat: DAT/FARC MAGES Rozen Maiden PS3 archive

---
 ArcFormats/ArcFormats.csproj |  1 +
 ArcFormats/MAGES/ArcFARC.cs  | 48 ++++++++++++++++++++++++++++++++++++
 2 files changed, 49 insertions(+)
 create mode 100644 ArcFormats/MAGES/ArcFARC.cs

diff --git a/ArcFormats/ArcFormats.csproj b/ArcFormats/ArcFormats.csproj
index 211acb36..6cc91afa 100644
--- a/ArcFormats/ArcFormats.csproj
+++ b/ArcFormats/ArcFormats.csproj
@@ -172,6 +172,7 @@
     <Compile Include="Macromedia\DirectorFile.cs" />
     <Compile Include="Macromedia\Palettes.cs" />
     <Compile Include="MAGES\ArcARC20.cs" />
+    <Compile Include="MAGES\ArcFARC.cs" />
     <Compile Include="MAGES\ArcLoveOnce.cs" />
     <Compile Include="MAGES\ImageBIN.cs" />
     <Compile Include="Mugi\ArcBIN.cs" />
diff --git a/ArcFormats/MAGES/ArcFARC.cs b/ArcFormats/MAGES/ArcFARC.cs
new file mode 100644
index 00000000..5e79ce51
--- /dev/null
+++ b/ArcFormats/MAGES/ArcFARC.cs
@@ -0,0 +1,48 @@
+using System.Collections.Generic;
+using System.ComponentModel.Composition;
+using System.Text;
+
+namespace GameRes.Formats.MAGES
+{
+    [Export(typeof(ArchiveFormat))]
+    public class FARCOpener : ArchiveFormat
+    {
+        public override string Tag { get { return "DAT/FARC Rozen Maiden PS3 archive"; } }
+        public override string Description { get { return "MAGES Rozen Maiden Wechseln Sie Welt ab PS3 BLJM61120 archive"; } }
+        public override uint Signature { get { return 0x43524146; } } // 'FARC'
+        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(20);
+            if (!IsSaneCount(count))
+                return null;
+            uint datanamestart = (uint)count * 20 + 36;
+            var dir = new List<Entry>(count);
+            for (int i = 0; i < count; ++i)
+            {
+                long namepl = file.View.ReadUInt32(20 * i + 36 + 16);
+                long index_offset = datanamestart + namepl;
+                byte c;
+                List<byte> namebyte = new List<byte>();
+                while (true)
+                {
+                    c = file.View.ReadByte(index_offset);
+                    if (c == 0) break;
+                    namebyte.Add(c);
+                    index_offset++;
+                }
+                var sjis = Encoding.GetEncoding("Shift-JIS");
+                var name = sjis.GetString(namebyte.ToArray());
+                var entry = Create<Entry>(name);
+                entry.Offset = file.View.ReadUInt32(20 * i + 36);
+                entry.Size = file.View.ReadUInt32(20 * i + 36 + 4);
+                if (entry.Size == 0) 
+                    continue;
+                dir.Add(entry);
+            }
+            return new ArcFile(file, this, dir);
+        }
+    }
+}