private void WriteFileTable(Stream output, IList <IArchiveFileInfo> files)
{
var crc16 = Crc16.X25;
var fileEntries = new List <GfsaFileEntry>();
var fileOffset = 0;
foreach (var fileGroup in OrderFiles(files).Cast <GfsaArchiveFileInfo>().GroupBy(x => x.FilePath.GetDirectory().ToRelative() + "/"))
{
var localGroup = fileGroup.Select(file =>
{
var entry = new GfsaFileEntry
{
hash = BinaryPrimitives.ReadUInt16BigEndian(crc16.Compute(Encoding.ASCII.GetBytes(file.FilePath.GetName()))),
Offset = fileOffset,
Size = (int)file.CompressedSize
};
fileOffset += (int)((file.CompressedSize + 3) & ~3);
return(entry);
});
fileEntries.AddRange(localGroup.OrderBy(x => x.hash));
}
XfsaSupport.WriteCompressedTableEntries(output, fileEntries);
while (output.Position % 4 > 0)
{
output.WriteByte(0);
}
}
private IArchiveFileInfo CreateAfi(Stream file, string name, GfsaFileEntry entry)
{
var method = Level5Compressor.PeekCompressionMethod(file);
if (method != Level5CompressionMethod.NoCompression)
{
return(new GfsaArchiveFileInfo(file, name, entry, Level5Compressor.GetKompressionConfiguration(method), Level5Compressor.PeekDecompressedSize(file)));
}
return(new GfsaArchiveFileInfo(new SubStream(file, 4, file.Length - 4), name, entry));
}
