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/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla 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/MPL/
 *
 * 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
 * the Mozilla Corporation.
 * Portions created by the Initial Developer are Copyright (C) 2009
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Boris Zbarsky <bzbarsky@mit.edu> (original author)
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
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 * ***** END LICENSE BLOCK ***** */

#include "nsISupports.idl"

interface nsIInputStream;
interface nsIOutputStream;

/**
 * nsIIOUtil provdes various xpcom/io-related utility methods.
 */
[scriptable, uuid(e8152f7f-4209-4c63-ad23-c3d2aa0c5a49)]
interface nsIIOUtil : nsISupports
{
  /**
   * Test whether an input stream is buffered.  See nsStreamUtils.h
   * documentation for NS_InputStreamIsBuffered for the definition of
   * "buffered" used here and for edge-case behavior.
   *
   * @throws NS_ERROR_INVALID_POINTER if null is passed in.
   */
  boolean inputStreamIsBuffered(in nsIInputStream aStream);

  /**
   * Test whether an output stream is buffered.  See nsStreamUtils.h
   * documentation for NS_OutputStreamIsBuffered for the definition of
   * "buffered" used here and for edge-case behavior.
   *
   * @throws NS_ERROR_INVALID_POINTER if null is passed in.
   */
  boolean outputStreamIsBuffered(in nsIOutputStream aStream);
};
