feat: add sopport of Love Once PS3 archive

ArcFormats/ArcFormats.csproj

@@ -170,6 +170,7 @@
     <Compile Include="Macromedia\DirectorFile.cs" />
     <Compile Include="Macromedia\Palettes.cs" />
     <Compile Include="MAGES\ArcARC20.cs" />
+    <Compile Include="MAGES\ArcLoveOnce.cs" />
     <Compile Include="Mugi\ArcBIN.cs" />
     <Compile Include="NScripter\Script.cs" />
     <Compile Include="Psp\ArcQPK.cs" />

ArcFormats/MAGES/ArcLoveOnce.cs

@@ -0,0 +1,55 @@
+using System.Collections.Generic;
+using System.ComponentModel.Composition;
+using System.IO;
+using System.Runtime.CompilerServices;
+using System.Xml.Linq;
+
+namespace GameRes.Formats.MAGES
+{
+    [Export(typeof(ArchiveFormat))]
+    public class LoveOnceOpener : ArchiveFormat
+    {
+        public override string Tag { get { return "BIN/LoveOnce"; } }
+        public override string Description { get { return "L@ve Once PS3 resource archive"; } }
+        public override uint Signature { get { return 0; } } // no header
+        public override bool IsHierarchic { get { return false; } }
+        public override bool CanWrite { get { return false; } }
+
+        public override ArcFile TryOpen(ArcView filedata)
+        {
+            ArcView filelist;
+            if (filedata.Name.EndsWith("data.bin"))
+            {
+                string filepath = Path.GetDirectoryName(filedata.Name);
+                filepath = Path.Combine(filepath, "list.bin");
+                filelist = new ArcView(filepath);
+            }
+            else if (filedata.Name.EndsWith("list.bin"))
+            {
+                string filepath = Path.GetDirectoryName(filedata.Name);
+                filepath = Path.Combine(filepath, "data.bin");
+                filelist = new ArcView(filepath);
+                return TryOpen(filelist);
+            }
+            else return null;
+
+            uint index_offset = 0, count = 0;
+            var dir = new List<Entry>();
+            while (index_offset < filelist.MaxOffset)
+            {
+                uint filesize = filelist.View.ReadUInt32(index_offset);
+                uint fileoffset = filelist.View.ReadUInt32(index_offset + 8);
+                string name = filelist.View.ReadString(index_offset + 0x10, 0x40);
+                var entry = Create<Entry>(name);
+                entry.Size = filesize;
+                entry.Offset = fileoffset;
+                if (!entry.CheckPlacement(filedata.MaxOffset))
+                    return null;
+                dir.Add(entry);
+                count++;
+                index_offset += 0x50;
+            }
+            return new ArcFile(filedata, this, dir);
+        }
+    }
+}