forked from len0rd/rockbox
f501dd00eb
characters less than the first diacritic in the symbol table (0x300) return false after checking the MRU table we gain some performance by eliding the function call all together if less than first diacritic Change-Id: I02c14e350eb168eca808523affad443cd43888b4
40 lines
1.7 KiB
C
40 lines
1.7 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2009 Tomer Shalev
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef _DIACRITIC_H_
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#define _DIACRITIC_H_
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#include "system.h"
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#define FIRST_DIACRITIC (0x0300)
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/* Tests whether a given charactor code is a diacritic mark.
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* Sets is_rtl (if it's not NULL) to whether the character
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* belongs to an RTL language.
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*/
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bool is_diacritic(const unsigned short char_code, bool *is_rtl);
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/* Note IS_DIACRITIC macros may elide the function call
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* therefore there is a separate _RTL version that requires a bool pointer
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* as it sets the variable to false when the is_diacritic func is skipped
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*/
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#define IS_DIACRITIC(c) (c >= FIRST_DIACRITIC && is_diacritic(c, NULL))
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/* sets the rtl variable to false when function call is skipped */
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#define IS_DIACRITIC_RTL(c, rtl) ((c >= FIRST_DIACRITIC || ( (*rtl = false) )) && is_diacritic(c, rtl))
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#endif
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