internal TorrentFileStream GetStream(TorrentFile file, FileAccess access)
{
TorrentFileStream s = FindStream(file.FullPath);
if (s != null)
{
// If we are requesting write access and the current stream does not have it
if (((access & FileAccess.Write) == FileAccess.Write) && !s.CanWrite)
{
Logger.Log(null, "Didn't have write permission - reopening");
CloseAndRemove(s);
s = null;
}
else
{
// Place the filestream at the end so we know it's been recently used
list.Remove(s);
list.Add(s);
}
}
if (s == null)
{
if (!File.Exists(file.FullPath))
{
Directory.CreateDirectory(Path.GetDirectoryName(file.FullPath));
SparseFile.CreateSparse(file.FullPath, file.Length);
}
s = new TorrentFileStream(file, FileMode.OpenOrCreate, access, FileShare.Read);
// Ensure that we truncate existing files which are too large
if (s.Length > file.Length)
{
if (!s.CanWrite)
{
#if NETSTANDARD1_5
s.Dispose();
#else
s.Close();
#endif
s = new TorrentFileStream(file, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.Read);
}
s.SetLength(file.Length);
}
Add(s);
}
return(s);
}
private void CloseAndRemove(TorrentFileStream s)
{
Logger.Log(null, "Closing and removing: {0}", s.Path);
list.Remove(s);
s.Dispose();
}