3210bc85ae
...and fix its documentation, and use it throughout the code base. Change-Id: I349bc2009b1b0aa7115ea90bc6ecd0a812f63698
74 lines
2.4 KiB
C++
74 lines
2.4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef INCLUDED_SAL_TEXTENC_UNICHARS_HXX
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#define INCLUDED_SAL_TEXTENC_UNICHARS_HXX
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#include <sal/config.h>
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#include <cassert>
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#include <rtl/character.hxx>
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#include <sal/types.h>
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#define RTL_TEXTENC_UNICODE_REPLACEMENT_CHARACTER 0xFFFD
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inline bool ImplIsNoncharacter(sal_uInt32 nUtf32)
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{
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return (nUtf32 >= 0xFDD0 && nUtf32 <= 0xFDEF)
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|| (nUtf32 & 0xFFFF) >= 0xFFFE
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|| !rtl::isUnicodeCodePoint(nUtf32);
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}
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// All code points that are noncharacters, as of Unicode 3.1.1.
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bool ImplIsControlOrFormat(sal_uInt32 nUtf32);
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inline bool ImplIsHighSurrogate(sal_uInt32 nUtf32)
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{ return nUtf32 >= 0xD800 && nUtf32 <= 0xDBFF; }
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// All code points that are high-surrogates, as of Unicode 3.1.1.
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inline bool ImplIsLowSurrogate(sal_uInt32 nUtf32)
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{ return nUtf32 >= 0xDC00 && nUtf32 <= 0xDFFF; }
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// All code points that are low-surrogates, as of Unicode 3.1.1.
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bool ImplIsPrivateUse(sal_uInt32 nUtf32);
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bool ImplIsZeroWidth(sal_uInt32 nUtf32);
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inline sal_uInt32 ImplGetHighSurrogate(sal_uInt32 nUtf32)
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{
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assert(nUtf32 >= 0x10000);
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return ((nUtf32 - 0x10000) >> 10) | 0xD800;
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}
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inline sal_uInt32 ImplGetLowSurrogate(sal_uInt32 nUtf32)
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{
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assert(nUtf32 >= 0x10000);
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return ((nUtf32 - 0x10000) & 0x3FF) | 0xDC00;
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}
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inline sal_uInt32 ImplCombineSurrogates(sal_uInt32 nHigh, sal_uInt32 nLow)
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{
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assert(ImplIsHighSurrogate(nHigh) && ImplIsLowSurrogate(nLow));
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return (((nHigh & 0x3FF) << 10) | (nLow & 0x3FF)) + 0x10000;
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}
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#endif
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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