/// <summary>
// Try to parse file containing game meta-information.
/// </summary>
internal string TryParseMeta(string meta_arc_name)
{
if (!VFS.FileExists(meta_arc_name))
{
return(null);
}
using (var unpacker = new TocUnpacker(meta_arc_name))
{
if (unpacker.Length > 0x1000)
{
return(null);
}
var data = unpacker.Unpack(8);
if (null == data)
{
return(null);
}
using (var content = new BinMemoryStream(data))
{
int title_length = content.ReadInt32();
if (title_length <= 0 || title_length > content.Length)
{
return(null);
}
var title = content.ReadBytes(title_length);
if (title.Length != title_length)
{
return(null);
}
return(Encodings.cp932.GetString(title));
}
}
}
public override ArcFile TryOpen(ArcView file)
{
long index_offset = 4 + (long)file.View.ReadInt32(0) * 2;
if (index_offset <= 4 || index_offset >= file.MaxOffset)
{
return(null);
}
using (var toc_unpacker = new TocUnpacker(file))
{
var toc = toc_unpacker.Unpack(index_offset, 8);
if (null == toc)
{
return(null);
}
var data_offset = index_offset + 0x10 + toc_unpacker.PackedSize;
using (var index = new AppendixReader(toc, file, data_offset))
{
if (!index.Read())
{
return(null);
}
return(new BellArchive(file, this, index.Dir, null));
}
}
}
internal byte[] ReadToc(string toc_name, int num_length)
{
if (!VFS.FileExists(toc_name))
{
return(null);
}
using (var toc_unpacker = new TocUnpacker(toc_name))
return(toc_unpacker.Unpack(num_length));
}