variation of Circus resource archives.

ArcFormats/Circus/ArcCircus.cs

@@ -2,7 +2,7 @@
 //! \date       Mon Jun 15 16:11:56 2015
 //! \brief      Circus archive format.
 //
-// Copyright (C) 2015 by morkt
+// Copyright (C) 2015-2016 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
@@ -51,6 +51,8 @@ namespace GameRes.Formats.Circus
             if (count <= 1 || count > 0xfffff)
                 return null;
             var dir = ReadIndex (file, count, 0x30);
+            if (null == dir)
+                dir = ReadIndex (file, count, 0x3C);
             if (null == dir)
                 return null;
             return new ArcFile (file, this, dir);
@@ -64,12 +66,14 @@ namespace GameRes.Formats.Circus
                 return null;
             --count;
             uint next_offset = file.View.ReadUInt32 (index_offset+name_length);
+            if (next_offset < 4+index_size)
+                return null;
             var dir = new List<Entry> (count);
             for (int i = 0; i < count; ++i)
             {
-                if (0 == file.View.ReadByte (index_offset))
-                    return null;
                 string name = file.View.ReadString (index_offset, (uint)name_length);
+                if (0 == name.Length)
+                    return null;
                 var entry = FormatCatalog.Instance.Create<Entry> (name);
                 index_offset += name_length;
                 uint offset = next_offset;

supported.html

@@ -391,6 +391,7 @@ Soshite Ashita no Sekai yori<br/>
 <tr><td>*.b</td><td><tt>ABMP7</tt><br/><tt>abmp10</tt><br/><tt>abmp11</tt></td><td>No</td></tr>
 <tr><td>*.png</td><td><tt>DPNG</tt></td><td>No</td></tr>
 <tr class="odd"><td>*.dat</td><td>-</td><td>No</td><td rowspan="3">Circus</td><td rowspan="3">
+Infantaria XP<br/>
 Maid no Yakata ~Zetsubou Hen~<br/>
 </td></tr>
 <tr class="odd"><td>*.crx</td><td><tt>CRXG</tt></td><td>No</td></tr>