/// <summary>
/// Generate a list of DatItem objects from the header values in an archive
/// </summary>
/// <returns>List of DatItem objects representing the found data</returns>
public override List <BaseFile> GetChildren()
{
if (_children == null || _children.Count == 0)
{
_children = new List <BaseFile>();
string gamename = Path.GetFileNameWithoutExtension(this.Filename);
BaseFile possibleTgz = GetTorrentGZFileInfo();
// If it was, then add it to the outputs and continue
if (possibleTgz != null && possibleTgz.Filename != null)
{
_children.Add(possibleTgz);
}
else
{
try
{
// Create a blank item for the entry
BaseFile gzipEntryRom = new BaseFile();
// Perform a quickscan, if flagged to
if (this.AvailableHashes == Hash.CRC)
{
gzipEntryRom.Filename = gamename;
using (BinaryReader br = new BinaryReader(FileExtensions.TryOpenRead(this.Filename)))
{
br.BaseStream.Seek(-8, SeekOrigin.End);
gzipEntryRom.CRC = br.ReadBytesBigEndian(4);
gzipEntryRom.Size = br.ReadInt32BigEndian();
}
}
// Otherwise, use the stream directly
else
{
var gz = new gZip();
ZipReturn ret = gz.ZipFileOpen(this.Filename);
ret = gz.ZipFileOpenReadStream(0, out Stream gzstream, out ulong streamSize);
gzipEntryRom = gzstream.GetInfo(hashes: this.AvailableHashes);
gzipEntryRom.Filename = gz.Filename(0);
gzipEntryRom.Parent = gamename;
gzipEntryRom.Date = (gz.TimeStamp > 0 ? gz.TimeStamp.ToString() : null);
gzstream.Dispose();
}
// Fill in comon details and add to the list
gzipEntryRom.Parent = gamename;
_children.Add(gzipEntryRom);
}
catch (Exception ex)
{
logger.Error(ex);
return(null);
}
}
}
return(_children);
}
