/// <summary>
/// Gets a file or directory.
/// </summary>
/// <param name="nameSpace">namespace of the name</param>
/// <param name="name">name</param>
/// <returns>
/// The meta info of the file(s) downloaded.
/// </returns>
public DataMetaInfo Get(string nameSpace, string name)
{
string downloadPath;
var torrentBytes = _manager.GetData(nameSpace, name, out downloadPath);
return(MakeDataMetaInfo(downloadPath, torrentBytes, false));
}
/// <summary>
/// Gets a block of data.
/// </summary>
/// <param name="nameSpace">The name space.</param>
/// <param name="name">The name.</param>
/// <param name="offset">The offset.</param>
/// <param name="bytesToRead">The bytes to read.</param>
/// <param name="waitHandle">The wait handle.</param>
/// <returns></returns>
public byte[] GetDataBlock(string nameSpace, string name, long offset,
int bytesToRead)
{
// Download whole torrent.
var wholeTorrentBytes = _torrentHelper.ReadOrDownloadTorrent(
nameSpace, name, _dhtProxy);
Torrent wholeTorrent = Torrent.Load(wholeTorrentBytes);
// Find out the piece to download.
int pieceIndex = (int)Math.Floor(offset / (double)wholeTorrent.PieceLength);
var pieceName = MakePieceDataName(name, pieceIndex);
int offsetInPiece = (int)(offset % wholeTorrent.PieceLength);
// If the piece is already downloaded, we just return it.
string piecePath = _bittorrentCache.GetPathOfItemInDownloads(
nameSpace, pieceName);
if (IOUtil.FileOrDirectoryExists(piecePath))
{
return(IOUtil.Read(piecePath, offsetInPiece, bytesToRead));
}
var pieceTorrentBytes = DownloadPieceTorrent(nameSpace, name,
wholeTorrent, pieceIndex);
// Write it to filesys so that the ordinary torrent downloading can pick it up.
var pieceTorrentPath =
_torrentHelper.WriteTorrentFile(nameSpace, pieceName, pieceTorrentBytes);
Logger.WriteLineIf(LogLevel.Verbose, _log_props, string.Format(
"Piece torrent downloaded and written to path {0}", pieceTorrentPath));
// Download as a regular torrent.
string pieceDownloadPath;
_manager.GetData(nameSpace, pieceName, out pieceDownloadPath);
return(IOUtil.Read(pieceDownloadPath, offsetInPiece, bytesToRead));
}
