/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: NPL 1.1/GPL 2.0/LGPL 2.1
 *
 * 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 the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 * Frank Yung-Fong Tang <ftang@netscape.com>
 *
 *
 * 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
 * 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 NPL, 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 NPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#include "nsISupports.idl"

%{C++
// {ADF42751-1CEF-4ad2-AA8E-BCB849D8D31F}
#define NS_SEMANTICUNITSCANNER_CID { 0xadf42751, 0x1cef, 0x4ad2, { 0xaa, 0x8e, 0xbc, 0xb8, 0x49, 0xd8, 0xd3, 0x1f}}
#define NS_SEMANTICUNITSCANNER_CONTRACTID "@mozilla.org/intl/semanticunitscanner;1"
%}

/**
 * Provides a language independent way to break UNICODE
 * text into meaningful semantic units (e.g. words).
 */
[scriptable, uuid(9f620be4-e535-11d6-b254-00039310a47a)]
interface nsISemanticUnitScanner : nsISupports {
    /**
     * start()
     *
     * Starts up the semantic unit scanner with an optional
     * character set, which acts as a hint to optimize the heuristics
     * used to determine the language(s) of the processed text.
     *
     * @param characterSet the character set the text was originally
     *                     encoded in (can be NULL)
     */
    void start(in string characterSet);

    /**
     * next()
     * Get the begin / end offset of the next unit in the current text
     *
     * @param text the text to be scanned
     * @param length the number of characters in the text to be processed
     * @param pos the current position
     * @param isLastBuffer, the buffer is the last one
     * @param begin the begin offset of the next unit 
     * @param begin the end offset of the next unit 
     * @return has more unit in the current text
     */
    boolean next(in wstring text, in long length, in long pos, 
              in boolean isLastBuffer,
              out long begin, out long end );

};
