public override int Read(byte[] buffer, int offset, int count)
{
if (buffer == null)
{
throw new ArgumentNullException("buffer");
}
if (offset + count > buffer.Length)
{
throw new ArgumentException("The sum of offset and count is greater than the buffer length.");
}
if (offset < 0 || count < 0)
{
throw new ArgumentOutOfRangeException("offset", "offset or count is negative.");
}
lock (_lock)
{
var totalBytesRead = 0;
while (count > 0)
{
while (_first == null && !_isDisposed)
{
Monitor.Wait(_lock);
}
if (_first == null)
{
return(totalBytesRead);
}
var bytesRead = _first.Read(buffer, offset, count);
if (_first.IsEmpty)
{
_first = _first.Next;
}
count -= bytesRead;
totalBytesRead += bytesRead;
offset += bytesRead;
_position += bytesRead;
}
return(totalBytesRead);
}
}
private void InternalSeekForward(long offset)
{
while (offset > 0)
{
var remainingBytesInCurrentPipe = _first.Length - _first.Position;
if (remainingBytesInCurrentPipe >= offset)
{
_first.Position += (int)offset;
offset = 0;
}
else
{
_first = _first.Next;
offset -= remainingBytesInCurrentPipe;
}
}
}
public override void Write(byte[] buffer, int offset, int count)
{
if (buffer == null)
{
throw new ArgumentNullException("buffer");
}
if (offset + count > buffer.Length)
{
throw new ArgumentException("The sum of offset and count is greater than the buffer length.");
}
if (offset < 0 || count < 0)
{
throw new ArgumentOutOfRangeException("offset", "offset or count is negative.");
}
if (_isDisposed)
{
throw CreateObjectDisposedException();
}
if (count == 0)
{
return;
}
lock (_lock)
{
var last = new PipeEntry(buffer, offset, count);
if (_last == null)
{
_last = last;
}
else
{
_last = _last.Next = last;
}
if (_first == null)
{
_first = _last;
}
_length += count;
Monitor.Pulse(_lock);
}
}
public override void SetLength(long value)
{
if (value < 0)
{
throw new ArgumentOutOfRangeException("Cannot be negative.", nameof(value));
}
if (_isDisposed)
{
throw CreateObjectDisposedException();
}
lock (_lock)
{
if (value < _position)
{
throw new ArgumentOutOfRangeException("Cannot be less that the current position.", nameof(value));
}
if (value > _length)
{
throw new ArgumentOutOfRangeException("Cannot be greater than the current length.", nameof(value));
}
var bytesToSkip = value - _position;
while (bytesToSkip > 0)
{
var remainingBytesInCurrentPipe = _first.Length - _first.Position;
if (remainingBytesInCurrentPipe > bytesToSkip)
{
_first.Length = _first.Position + (int)bytesToSkip;
_first.Next = null;
bytesToSkip = 0;
}
else
{
_first = _first.Next;
bytesToSkip -= remainingBytesInCurrentPipe;
}
}
_length = value;
}
}
