/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** 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 Communicator client 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
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#include "nsISupports.idl"

interface nsIInputStream;

%{C++
// {0A698C44-3BFF-11d4-9649-00C0CA135B4E}
#define NS_ISCRIPTABLEUNICODECONVERTER_CID { 0x0A698C44, 0x3BFF, 0x11d4, { 0x96, 0x49, 0x00, 0xC0, 0xCA, 0x13, 0x5B, 0x4E } }
#define NS_ISCRIPTABLEUNICODECONVERTER_CONTRACTID "@mozilla.org/intl/scriptableunicodeconverter"
%}

/**
 * This interface is a unicode encoder for use by scripts
 *
 * @created         8/Jun/2000
 * @author          Makoto Kato [m_kato@ga2.so-net.ne.jp]
 */
[scriptable, uuid(1ea19c6c-c59f-4fd7-9fc7-151e946baca0)]
interface nsIScriptableUnicodeConverter : nsISupports
{
  /**
   * Converts the data from Unicode to one Charset.
   * Returns the converted string. After converting, Finish should be called
   * and its return value appended to this return value.
   */
  ACString ConvertFromUnicode(in AString aSrc);

  /**
   * Returns the terminator string.
   * Should be called after ConvertFromUnicode() and appended to that
   * function's return value.
   */
  ACString Finish();

  /**
   * Converts the data from one Charset to Unicode.
   */
  AString ConvertToUnicode(in ACString aSrc);

  /**
   * Converts an array of bytes to a unicode string.
   */
  AString convertFromByteArray([const,array,size_is(aCount)] in octet aData,
                               in unsigned long aCount);

  /**
   * Convert a unicode string to an array of bytes. Finish does not need to be
   * called.
   */
  void convertToByteArray(in AString aString,
                          [optional] out unsigned long aLen,
                          [array, size_is(aLen),retval] out octet aData);

  /**
   * Converts a unicode string to an input stream. The bytes in the stream are
   * encoded according to the charset attribute.
   * The returned stream will be nonblocking.
   */
  nsIInputStream convertToInputStream(in AString aString);

  /**
   * Current character set.
   *
   * @throw NS_ERROR_UCONV_NOCONV
   *        The requested charset is not supported.
   */
  attribute string charset;
};
