Sharpen.InputStream.Skip C# (CSharp) Method

		public virtual long Skip (long cnt)
		{
			if (Wrapped is WrappedSystemStream)
				return ((WrappedSystemStream)Wrapped).InputStream.Skip (cnt);
			
			long n = cnt;
			while (n > 0) {
				if (Read () == -1)
					return cnt - n;
				n--;
			}
			return cnt - n;
		}
		

		/// <exception cref="NSch.SftpException"></exception>
		public virtual void _put(InputStream src, string dst, SftpProgressMonitor monitor
			, int mode)
		{
			try
			{
				((Channel.MyPipedInputStream)io_in).UpdateReadSide();
				byte[] dstb = Util.Str2byte(dst, fEncoding);
				long skip = 0;
				if (mode == RESUME || mode == APPEND)
				{
					try
					{
						SftpATTRS attr = _stat(dstb);
						skip = attr.GetSize();
					}
					catch (Exception)
					{
					}
				}
				//System.err.println(eee);
				if (mode == RESUME && skip > 0)
				{
					long skipped = src.Skip(skip);
					if (skipped < skip)
					{
						throw new SftpException(SSH_FX_FAILURE, "failed to resume for " + dst);
					}
				}
				if (mode == OVERWRITE)
				{
					SendOPENW(dstb);
				}
				else
				{
					SendOPENA(dstb);
				}
				ChannelHeader header = new ChannelHeader(this);
				header = Header(buf, header);
				int length = header.length;
				int type = header.type;
				Fill(buf, length);
				if (type != SSH_FXP_STATUS && type != SSH_FXP_HANDLE)
				{
					throw new SftpException(SSH_FX_FAILURE, "invalid type=" + type);
				}
				if (type == SSH_FXP_STATUS)
				{
					int i = buf.GetInt();
					ThrowStatusError(buf, i);
				}
				byte[] handle = buf.GetString();
				// handle
				byte[] data = null;
				bool dontcopy = true;
				if (!dontcopy)
				{
					// This case will not work anymore.
					data = new byte[obuf.buffer.Length - (5 + 13 + 21 + handle.Length + Session.buffer_margin
						)];
				}
				long offset = 0;
				if (mode == RESUME || mode == APPEND)
				{
					offset += skip;
				}
				int startid = seq;
				int ackcount = 0;
				int _s = 0;
				int _datalen = 0;
				if (!dontcopy)
				{
					// This case will not work anymore.
					_datalen = data.Length;
				}
				else
				{
					data = obuf.buffer;
					_s = 5 + 13 + 21 + handle.Length;
					_datalen = obuf.buffer.Length - _s - Session.buffer_margin;
				}
				int bulk_requests = rq.Size();
				while (true)
				{
					int nread = 0;
					int count = 0;
					int s = _s;
					int datalen = _datalen;
					do
					{
						nread = src.Read(data, s, datalen);
						if (nread > 0)
						{
							s += nread;
							datalen -= nread;
							count += nread;
						}
					}
					while (datalen > 0 && nread > 0);
					if (count <= 0)
					{
						break;
					}
					int foo = count;
					while (foo > 0)
					{
						if ((seq - 1) == startid || ((seq - startid) - ackcount) >= bulk_requests)
						{
							while (((seq - startid) - ackcount) >= bulk_requests)
							{
								if (this.rwsize >= foo)
								{
									break;
								}
								if (CheckStatus(ackid, header))
								{
									int _ackid = ackid[0];
									if (startid > _ackid || _ackid > seq - 1)
									{
										if (_ackid == seq)
										{
											System.Console.Error.WriteLine("ack error: startid=" + startid + " seq=" + seq + 
												" _ackid=" + _ackid);
										}
										else
										{
											throw new SftpException(SSH_FX_FAILURE, "ack error: startid=" + startid + " seq="
												 + seq + " _ackid=" + _ackid);
										}
									}
									ackcount++;
								}
								else
								{
									break;
								}
							}
						}
						foo -= SendWRITE(handle, offset, data, 0, foo);
					}
					offset += count;
					if (monitor != null && !monitor.Count(count))
					{
						break;
					}
				}
				int _ackcount = seq - startid;
				while (_ackcount > ackcount)
				{
					if (!CheckStatus(null, header))
					{
						break;
					}
					ackcount++;
				}
				if (monitor != null)
				{
					monitor.End();
				}
				_sendCLOSE(handle, header);
			}
			catch (Exception e)
			{
				if (e is SftpException)
				{
					throw (SftpException)e;
				}
				if (e is Exception)
				{
					throw new SftpException(SSH_FX_FAILURE, e.ToString(), (Exception)e);
				}
				throw new SftpException(SSH_FX_FAILURE, e.ToString());
			}
		}