xpcom/io/nsIInputStreamTee.idl

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /* ***** BEGIN LICENSE BLOCK *****
   3  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   4  *
   5  * The contents of this file are subject to the Mozilla Public License Version
   6  * 1.1 (the "License"); you may not use this file except in compliance with
   7  * the License. You may obtain a copy of the License at
   8  * http://www.mozilla.org/MPL/
   9  *
  10  * Software distributed under the License is distributed on an "AS IS" basis,
  11  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  12  * for the specific language governing rights and limitations under the
  13  * License.
  14  *
  15  * The Original Code is mozilla.org code.
  16  *
  17  * The Initial Developer of the Original Code is
  18  * Netscape Communications Corporation.
  19  * Portions created by the Initial Developer are Copyright (C) 2001
  20  * the Initial Developer. All Rights Reserved.
  21  *
  22  * Contributor(s):
  23  *   Darin Fisher <darin@netscape.com> (original author)
  24  *
  25  * Alternatively, the contents of this file may be used under the terms of
  26  * either of the GNU General Public License Version 2 or later (the "GPL"),
  27  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  28  * in which case the provisions of the GPL or the LGPL are applicable instead
  29  * of those above. If you wish to allow use of your version of this file only
  30  * under the terms of either the GPL or the LGPL, and not to allow others to
  31  * use your version of this file under the terms of the MPL, indicate your
  32  * decision by deleting the provisions above and replace them with the notice
  33  * and other provisions required by the GPL or the LGPL. If you do not delete
  34  * the provisions above, a recipient may use your version of this file under
  35  * the terms of any one of the MPL, the GPL or the LGPL.
  36  *
  37  * ***** END LICENSE BLOCK ***** */
  38
  39 #include "nsIInputStream.idl"
  40
  41 interface nsIOutputStream;
  42
  43 /**
  44  * A nsIInputStreamTee is a wrapper for an input stream, that when read
  45  * reads the specified amount of data from its |source| and copies that
  46  * data to its |sink|.  |sink| must be a blocking output stream.
  47  */
  48 [scriptable, uuid(44e8b2c8-1ecb-4a63-8b23-3e3500c34f32)]
  49 interface nsIInputStreamTee : nsIInputStream
  50 {
  51     attribute nsIInputStream source;
  52     attribute nsIOutputStream sink;
  53 };
  54
  55 %{C++
  56 // factory method
  57 extern NS_COM nsresult
  58 NS_NewInputStreamTee(nsIInputStream **tee, // read from this input stream
  59                      nsIInputStream *source,
  60                      nsIOutputStream *sink);
  61 %}