/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * 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) 1998 Netscape Communications Corporation. All
 * Rights Reserved.
 *
 * Contributor(s): 
 */

#include "nsIBaseStream.idl"

[scriptable, uuid(022396f0-93b5-11d1-895b-006008911b81)]
interface nsIInputStream : nsIBaseStream
{
    /** Return the number of bytes currently available in the stream
     *  @param aLength out parameter to hold the number of bytes
     *         if an error occurs, the parameter will be undefined
     *  @return error status
     */
    unsigned long Available();

    /** Read data from the stream.
     *  @param aBuf the buffer into which the data is read
     *  @param aCount the maximum number of bytes to read
     *  @return aReadCount out parameter to hold the number of
     *         bytes read, eof if 0. if an error occurs, the
     *         read count will be undefined
     */
    [noscript] unsigned long Read(in charPtr buf, in unsigned long count);
};