/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 *
 * The contents of this file are subject to the Netscape Public
 * License Version 1.1 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.mozilla.org/NPL/
 *
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is Netscape
 * Communications Corporation.  Portions created by Netscape are
 * Copyright (C) 2001 Netscape Communications Corporation. All
 * Rights Reserved.
 *
 * Contributor(s): 
 *   Darin Fisher <darin@netscape.com> (original author)
 */

#include "nsIInputStream.idl"

interface nsIOutputStream;

/**
 * A nsIInputStreamTee is a wrapper for an input stream, that when read
 * reads the specified amount of data from its |source| and copies that
 * data to its |sink|.  |sink| must be a blocking output stream.
 */
[scriptable, uuid(44e8b2c8-1ecb-4a63-8b23-3e3500c34f32)]
interface nsIInputStreamTee : nsIInputStream
{
    void init(in nsIInputStream source,
              in nsIOutputStream sink);
};

%{C++
// factory method
extern NS_COM nsresult
NS_NewInputStreamTee(nsIInputStream **tee, // read from this input stream
                     nsIInputStream *source,
                     nsIOutputStream *sink);
%}
