implemented FGA archives.

ArcFormats/ArcFormats.csproj

@@ -126,6 +126,7 @@
     <Compile Include="Qlie\Encryption.cs" />
     <Compile Include="RealLive\ArcKOE.cs" />
     <Compile Include="rUGP\AudioRHA.cs" />
+    <Compile Include="Lilim\ArcFGA.cs" />
     <Compile Include="Slg\ArcSPD.cs" />
     <Compile Include="Software House Parsley\ArcCG.cs" />
     <Compile Include="Artemis\ArcPFS.cs" />

ArcFormats/Lilim/ArcFGA.cs

@@ -0,0 +1,86 @@
+//! \file       ArcFGA.cs
+//! \date       2017 Sep 16
+//! \brief      SFA engine resource archive.
+//
+// Copyright (C) 2017 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.Utility;
+
+namespace GameRes.Formats.Lilim
+{
+    [Export(typeof(ArchiveFormat))]
+    public class FgaOpener : AosOpener
+    {
+        public override string         Tag { get { return "FGA"; } }
+        public override string Description { get { return "SFA engine 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)
+        {
+            if (!file.Name.HasExtension (".fga"))
+                return null;
+            uint index_offset = 0;
+            var index_buffer = new byte[0x318];
+            var dir = new List<Entry> (0x20);
+            if (0x318 != file.View.Read (index_offset, index_buffer, 0, 0x318))
+                return null;
+            int pos = 0;
+            while (pos < index_buffer.Length)
+            {
+                if (0 == index_buffer[pos])
+                    break;
+                if (0xFF == index_buffer[pos])
+                {
+                    uint next_offset = index_buffer.ToUInt32 (pos+0xC);
+                    if (next_offset <= index_offset || next_offset >= file.MaxOffset)
+                        return null;
+                    index_offset = next_offset;
+                    if (0x318 != file.View.Read (index_offset, index_buffer, 0, 0x318))
+                        return null;
+                    pos = 0;
+                }
+                else
+                {
+                    var name = Binary.GetCString (index_buffer, pos, 0xC);
+                    var entry = FormatCatalog.Instance.Create<AosEntry> (name);
+                    entry.Offset = index_buffer.ToUInt32 (pos+0xC);
+                    entry.Size   = index_buffer.ToUInt32 (pos+0x10);
+                    if (!entry.CheckPlacement (file.MaxOffset))
+                        return null;
+                    if (name.HasExtension (".scr"))
+                        entry.IsCompressed = true;
+                    dir.Add (entry);
+                    pos += 0x18;
+                }
+            }
+            if (0 == dir.Count)
+                return null;
+            return new ArcFile (file, this, dir);
+        }
+    }
+}