/// <summary>
/// This method is called internally to load in all the files found within the "Files" section
/// of the .torrents infohash
/// </summary>
/// <param name="list">The list containing the files available to download</param>
private void LoadTorrentFiles(BEncodedList list)
{
var files = new List <TorrentFile>();
var sb = new StringBuilder(32);
foreach (var dict in list.Cast <BEncodedDictionary>())
{
long length = 0;
string path = null;
byte[] md5sum = null;
byte[] ed2k = null;
byte[] sha1 = null;
foreach (var keypair in dict)
{
switch (keypair.Key.Text)
{
case ("sha1"):
sha1 = ((BEncodedString)keypair.Value).TextBytes;
break;
case ("ed2k"):
ed2k = ((BEncodedString)keypair.Value).TextBytes;
break;
case ("length"):
length = long.Parse(keypair.Value.ToString());
break;
case ("path.utf-8"):
foreach (var str in ((BEncodedList)keypair.Value).Cast <BEncodedString>())
{
sb.Append(str.Text);
sb.Append(Path.DirectorySeparatorChar);
}
path = sb.ToString(0, sb.Length - 1);
sb.Remove(0, sb.Length);
break;
case ("path"):
if (string.IsNullOrEmpty(path))
{
foreach (var str in ((BEncodedList)keypair.Value).Cast <BEncodedString>())
{
sb.Append(str.Text);
sb.Append(Path.DirectorySeparatorChar);
}
path = sb.ToString(0, sb.Length - 1);
sb.Remove(0, sb.Length);
}
break;
case ("md5sum"):
md5sum = ((BEncodedString)keypair.Value).TextBytes;
break;
default:
break; //FIXME: Log unknown values
}
}
// A zero length file always belongs to the same piece as the previous file
int endIndex;
int startIndex;
if (length == 0)
{
if (files.Count > 0)
{
startIndex = files[files.Count - 1].EndPieceIndex;
endIndex = files[files.Count - 1].EndPieceIndex;
}
else
{
startIndex = 0;
endIndex = 0;
}
}
else
{
startIndex = (int)(Size / PieceLength);
endIndex = (int)((Size + length) / PieceLength);
if ((Size + length) % PieceLength == 0)
{
endIndex--;
}
}
Size += length;
files.Add(new TorrentFile(path, length, path, startIndex, endIndex, md5sum, ed2k, sha1));
}
Files = files.ToArray();
}
