/* -*- Mode: C++; tab-width: 20; 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 Corporation code. * * The Initial Developer of the Original Code is Mozilla Corporation. * Portions created by the Initial Developer are Copyright (C) 2010 * the Initial Developer. All Rights Reserved. * * Contributor(s): * Jonathan Kew * * 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 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. * * * This file is based on usc_impl.c from ICU 4.2.0.1, slightly adapted * for use within Mozilla Gecko, separate from a standard ICU build. * * The original ICU license of the code follows: * * ICU License - ICU 1.8.1 and later * * COPYRIGHT AND PERMISSION NOTICE * * Copyright (c) 1995-2009 International Business Machines Corporation and * others * * All rights reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, provided that the above copyright notice(s) and this * permission notice appear in all copies of the Software and that both the * above copyright notice(s) and this permission notice appear in supporting * documentation. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. * IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN THIS NOTICE * BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS * SOFTWARE. * * Except as contained in this notice, the name of a copyright holder shall * not be used in advertising or otherwise to promote the sale, use or other * dealings in this Software without prior written authorization of the * copyright holder. * * All trademarks and registered trademarks mentioned herein are the property * of their respective owners. */ #ifndef GFX_SCRIPTITEMIZER_H #define GFX_SCRIPTITEMIZER_H #include "prtypes.h" #include "harfbuzz/hb.h" #define PAREN_STACK_DEPTH 32 class gfxScriptItemizer { public: gfxScriptItemizer(const PRUnichar *src, PRUint32 length); void SetText(const PRUnichar *src, PRUint32 length); PRBool Next(PRUint32& aRunStart, PRUint32& aRunLimit, PRInt32& aRunScript); protected: void reset() { scriptStart = 0; scriptLimit = 0; scriptCode = PRInt32(HB_SCRIPT_INVALID_CODE); parenSP = -1; pushCount = 0; fixupCount = 0; } void push(PRInt32 pairIndex, PRInt32 scriptCode); void pop(); void fixup(PRInt32 scriptCode); struct ParenStackEntry { PRInt32 pairIndex; PRInt32 scriptCode; }; const PRUnichar *textPtr; PRUint32 textLength; PRUint32 scriptStart; PRUint32 scriptLimit; PRInt32 scriptCode; struct ParenStackEntry parenStack[PAREN_STACK_DEPTH]; PRUint32 parenSP; PRUint32 pushCount; PRUint32 fixupCount; }; #endif /* GFX_SCRIPTITEMIZER_H */