forked from len0rd/rockbox
a2c10f6189
We used 16-bit variables to store the 'character code' everywhere but this won't let us represent anything beyond U+FFFF. This patch changes those variables to a custom type that can be 32 or 16 bits depending on the build, and adjusts numerous internal APIs and datastructures to match. This includes: * utf8decode() and friends * font manipulation, caching, rendering, and generation * on-screen keyboard * FAT filesystem (parsing and generating utf16 LFNs) * WIN32 simulator platform code Note that this patch doesn't _enable_ >16bit unicode support; a followup patch will turn that on for appropriate targets. Appears to work on: * hosted linux, native, linux simulator in both 16/32-bit modes. Needs testing on: * windows and macos simulator (16bit+32bit) Change-Id: Iba111b27d2433019b6bff937cf1ebd2c4353a0e8
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 ucschar_t 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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