forked from enlightenment/efl
83 lines
2.4 KiB
C
83 lines
2.4 KiB
C
/*
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* Grapheme breaking in a Unicode sequence. Designed to be used in a
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* generic text renderer.
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*
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* Copyright (C) 2016 Andreas Röver <roever at users dot sf dot net>
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the author be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute
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* it freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must
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* not claim that you wrote the original software. If you use this
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* software in a product, an acknowledgement in the product
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* documentation would be appreciated but is not required.
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* 2. Altered source versions must be plainly marked as such, and must
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* not be misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source
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* distribution.
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*
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* The main reference is Unicode Standard Annex 29 (UAX #29):
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* <URL:http://unicode.org/reports/tr29>
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*
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* When this library was designed, this annex was at Revision 29, for
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* Unicode 9.0.0:
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* <URL:http://www.unicode.org/reports/tr29/tr29-29.html>
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*
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* The Unicode Terms of Use are available at
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* <URL:http://www.unicode.org/copyright.html>
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*/
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/**
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* @file graphemebreakdef.h
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*
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* Definitions of internal data structures, declarations of global
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* variables, and function prototypes for the grapheme breaking algorithm.
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*
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* @author Andreas Röver
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*/
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#include "unibreakdef.h"
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/**
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* Word break classes. This is a direct mapping of Table 2 of Unicode
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* Standard Annex 29
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*/
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enum GraphemeBreakClass
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{
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GBP_CR,
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GBP_LF,
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GBP_Control,
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GBP_Extend,
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GBP_ZWJ,
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GBP_Regional_Indicator,
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GBP_Prepend,
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GBP_SpacingMark,
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GBP_L,
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GBP_V,
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GBP_T,
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GBP_LV,
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GBP_LVT,
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GBP_E_Base,
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GBP_E_Modifier,
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GBP_Glue_After_Zwj,
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GBP_E_Base_GAZ,
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GBP_Other,
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GBP_Undefined
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};
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/**
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* Struct for entries of grapheme break properties. The array of the
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* entries \e must be sorted.
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*/
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struct GraphemeBreakProperties
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{
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utf32_t start; /**< Starting coding point */
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utf32_t end; /**< End coding point, including */
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enum GraphemeBreakClass prop; /**< The grapheme breaking property */
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};
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