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1/* vim: set tabstop=4 shiftwidth=4: */
2
3/*
4 * Word breaking in a Unicode sequence. Designed to be used in a
5 * generic text renderer.
6 *
7 * Copyright (C) 2011-2011 Tom Hacohen <tom@stosb.com>
8 *
9 * This software is provided 'as-is', without any express or implied
10 * warranty. In no event will the author be held liable for any damages
11 * arising from the use of this software.
12 *
13 * Permission is granted to anyone to use this software for any purpose,
14 * including commercial applications, and to alter it and redistribute
15 * it freely, subject to the following restrictions:
16 *
17 * 1. The origin of this software must not be misrepresented; you must
18 * not claim that you wrote the original software. If you use this
19 * software in a product, an acknowledgement in the product
20 * documentation would be appreciated but is not required.
21 * 2. Altered source versions must be plainly marked as such, and must
22 * not be misrepresented as being the original software.
23 * 3. This notice may not be removed or altered from any source
24 * distribution.
25 *
26 * The main reference is Unicode Standard Annex 29 (UAX #29):
27 * <URL:http://unicode.org/reports/tr29>
28 *
29 * When this library was designed, this annex was at Revision 17, for
30 * Unicode 6.0.0:
31 * <URL:http://www.unicode.org/reports/tr29/tr29-17.html>
32 *
33 * The Unicode Terms of Use are available at
34 * <URL:http://www.unicode.org/copyright.html>
35 */
36
37/**
38 * @file wordbreakdef.h
39 *
40 * Definitions of internal data structures, declarations of global
41 * variables, and function prototypes for the word breaking algorithm.
42 *
43 * @version 2.0, 2011/12/12
44 * @author Tom Hacohen
45 */
46
47/**
48 * Word break classes. This is a direct mapping of Table 3 of Unicode
49 * Standard Annex 29, Revision 17.
50 */
51enum WordBreakClass
52{
53 WBP_Undefined,
54
55 /* The following break classes are treated in the pair table. */
56 WBP_CR,
57 WBP_LF,
58 WBP_Newline,
59 WBP_Extend,
60 WBP_Format,
61 WBP_Katakana,
62 WBP_ALetter,
63 WBP_MidNumLet,
64 WBP_MidLetter,
65 WBP_MidNum,
66 WBP_Numeric,
67 WBP_ExtendNumLet,
68 WBP_Any
69};
70
71/**
72 * Struct for entries of word break properties. The array of the
73 * entries \e must be sorted.
74 */
75struct WordBreakProperties
76{
77 utf32_t start; /**< Starting coding point */
78 utf32_t end; /**< End coding point */
79 enum WordBreakClass prop; /**< The word breaking property */
80};