Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : 
      20             : #ifndef INCLUDED_SAL_RTL_SURROGATES_HXX
      21             : #define INCLUDED_SAL_RTL_SURROGATES_HXX
      22             : 
      23             : #include <sal/config.h>
      24             : 
      25             : #include <sal/types.h>
      26             : 
      27             : #define SAL_RTL_FIRST_HIGH_SURROGATE 0xD800
      28             : #define SAL_RTL_LAST_HIGH_SURROGATE 0xDBFF
      29             : #define SAL_RTL_FIRST_LOW_SURROGATE 0xDC00
      30             : #define SAL_RTL_LAST_LOW_SURROGATE 0xDFFF
      31             : 
      32   188272822 : inline bool isHighSurrogate(sal_uInt32 utf16) {
      33             :     return utf16 >= SAL_RTL_FIRST_HIGH_SURROGATE
      34   188272822 :         && utf16 <= SAL_RTL_LAST_HIGH_SURROGATE;
      35             : }
      36             : 
      37      207848 : inline bool isLowSurrogate(sal_uInt32 utf16) {
      38             :     return utf16 >= SAL_RTL_FIRST_LOW_SURROGATE
      39      207848 :         && utf16 <= SAL_RTL_LAST_LOW_SURROGATE;
      40             : }
      41             : 
      42          32 : inline sal_uInt32 combineSurrogates(sal_uInt32 high, sal_uInt32 low) {
      43          32 :     return ((high - SAL_RTL_FIRST_HIGH_SURROGATE) << 10)
      44          32 :         + (low - SAL_RTL_FIRST_LOW_SURROGATE) + 0x10000;
      45             : }
      46             : 
      47             : #endif
      48             : 
      49             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */