/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** 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
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either of 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
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#include "nsIUnicharInputStream.idl"

interface nsIInputStream;

/**
 * A unichar input stream that wraps an input stream.
 * This allows reading unicode strings from a stream, automatically converting
 * the bytes from a selected character encoding.
 */
[scriptable, uuid(FC66FFB6-5404-4908-A4A3-27F92FA0579D)]
interface nsIConverterInputStream : nsIUnicharInputStream {
    /**
     * Default replacement char value, U+FFFD REPLACEMENT CHARACTER.
     */
    const PRUnichar DEFAULT_REPLACEMENT_CHARACTER = 0xFFFD;

    /**
     * Initialize this stream.
     * @param aStream 
     *        The underlying stream to read from.
     * @param aCharset
     *        The character encoding to use for converting the bytes of the
     *        stream. A null charset will be interpreted as UTF-8.
     * @param aBufferSize
     *        How many bytes to buffer.
     * @param aReplacementChar
     *        The character to replace unknown byte sequences in the stream
     *        with. The standard replacement character is U+FFFD.
     *        A value of 0x0000 will cause an exception to be thrown if unknown
     *        byte sequences are encountered in the stream.
     */
    void init (in nsIInputStream aStream, in string aCharset,
               in long aBufferSize, in PRUnichar aReplacementChar);
};