void RaiseHashed(TorrentCreatorEventArgs e)
{
Toolbox.RaiseAsyncEvent <TorrentCreatorEventArgs> (Hashed, this, e);
}
byte [] CalcPiecesHash(List <TorrentFile> files, PieceWriter writer)
{
byte [] buffer = null;
int bufferRead = 0;
long fileRead = 0;
long overallRead = 0;
long overallTotal = 0;
MD5 md5Hasher = null;
SHA1 shaHasher = null;
List <byte> torrentHashes = null;
#if NETSTANDARD1_5
shaHasher = SHA1.Create();
#else
shaHasher = HashAlgoFactory.Create <SHA1> ();
#endif
torrentHashes = new List <byte> ();
overallTotal = Toolbox.Accumulate <TorrentFile> (files, delegate(TorrentFile m) { return(m.Length); });
long pieceLength = PieceLength;
buffer = new byte [pieceLength];
if (StoreMD5)
#if NETSTANDARD1_5
{ md5Hasher = MD5.Create(); //HashAlgoFactory.Create<MD5> ();
}
#else
{ md5Hasher = HashAlgoFactory.Create <MD5> (); }
#endif
try
{
foreach (TorrentFile file in files)
{
fileRead = 0;
if (md5Hasher != null)
{
md5Hasher.Initialize();
}
while (fileRead < file.Length)
{
int toRead = (int)Math.Min(buffer.Length - bufferRead, file.Length - fileRead);
int read = writer.Read(file, fileRead, buffer, bufferRead, toRead);
if (md5Hasher != null)
{
#if NETSTANDARD1_5
var hash = md5Hasher.ComputeHash(buffer, bufferRead, read);
hash.CopyTo(buffer, bufferRead);
#else
md5Hasher.TransformBlock(buffer, bufferRead, read, buffer, bufferRead);
#endif
}
#if NETSTANDARD1_5
var shaHash = shaHasher.ComputeHash(buffer, bufferRead, read);
shaHash.CopyTo(buffer, bufferRead);
#else
shaHasher.TransformBlock(buffer, bufferRead, read, buffer, bufferRead);
#endif
bufferRead += read;
fileRead += read;
overallRead += read;
if (bufferRead == buffer.Length)
{
bufferRead = 0;
#if NETSTANDARD1_5
var hash = shaHasher.ComputeHash(buffer, 0, 0);
torrentHashes.AddRange(hash);
#else
shaHasher.TransformFinalBlock(buffer, 0, 0);
torrentHashes.AddRange(shaHasher.Hash);
#endif
shaHasher.Initialize();
}
RaiseHashed(new TorrentCreatorEventArgs(file.Path, fileRead, file.Length, overallRead, overallTotal));
}
if (md5Hasher != null)
{
#if NETSTANDARD1_5
var hash = md5Hasher.ComputeHash(buffer, 0, 0);
md5Hasher.Initialize();
file.MD5 = hash;
#else
md5Hasher.TransformFinalBlock(buffer, 0, 0);
md5Hasher.Initialize();
file.MD5 = md5Hasher.Hash;
#endif
}
}
if (bufferRead > 0)
{
#if NETSTANDARD1_5
var hash = shaHasher.ComputeHash(buffer, 0, 0);
torrentHashes.AddRange(hash);
#else
shaHasher.TransformFinalBlock(buffer, 0, 0);
torrentHashes.AddRange(shaHasher.Hash);
#endif
}
} finally {
#if NETSTANDARD1_5
if (shaHasher != null)
{
shaHasher.Dispose();
}
if (md5Hasher != null)
{
md5Hasher.Dispose();
}
#else
if (shaHasher != null)
{
shaHasher.Clear();
}
if (md5Hasher != null)
{
md5Hasher.Clear();
}
#endif
}
return(torrentHashes.ToArray());
}
