/* -*- 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 FastLoad 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):
 */

#include "nsISupports.idl"
#include "nsrootidl.idl"

[scriptable, uuid(e9de5df0-c7ec-11d3-8cda-0060b0fc14a3)]
interface nsISeekableStream : nsISupports
{
    // NB: these must correspond to PRSeekWhence values.
    const PRInt32 NS_SEEK_SET = 0;
    const PRInt32 NS_SEEK_CUR = 1;
    const PRInt32 NS_SEEK_END = 2;
    
    void seek(in PRInt32 whence, in PRInt32 offset);
    PRUint32 tell();

    // truncate stream to the current offset
    void setEOF();
};