Mercurial > gnulib
view lib/unigbrk/u-grapheme-breaks.h @ 19273:638b6d1fdf36 ueno/unicode-9.0.0
libunistring: update to Unicode 9.0.0
* lib/gen-uni-tables.c (fill_properties): Recognize Sentence_Terminal
and Prepended_Concatenation_Mark.
(is_property_default_ignorable_code_point): Exclude U+08E2.
(fill_arabicshaping): Allow missing whitespace when parsing;
recognize "AFRICAN FEH", "AFRICAN QAF", and "AFRICAN MOON".
(output_blocks): Increase the element size of the level1 table to
accommodate more blocks.
(get_lbp): Recognize ZWJ, E_Base, and E_Modifier characters;
Update each class according to the standard.
(get_wbp): Recognize ZWJ, E_Base, E_Modifier, Glue_After_Zwj, and
E_Base_GAZ characters.
(output_gbp_table): Recognize ZWJ, E_Base, E_Modifier, Glue_After_Zwj,
and E_Base_GAZ characters.
* lib/unictype.in.h (UC_JOINING_GROUP_AFRICAN_FEH,
UC_JOINING_GROUP_AFRICAN_QAF, UC_JOINING_GROUP_AFRICAN_MOON): New enum value.
* lib/unilbrk/lbrktables.h (LBP_ZWJ, LBP_EB, LBP_EM): New enum value.
* lib/unilbrk/lbrktables.c (unilbrk_table): Extend the table with
LBP_ZWJ, LBP_EB, and LBP_EM.
* lib/uniwbrk.in.h (WBP_ZWJ, WBP_EB, WBP_EM, WBP_GAZ, WBP_EBG): New
enum value.
* lib/uniwbrk/u-wordbreaks.h: Implement WB3c, WB15, and WB16.
* lib/uniwbrk/wbrktable.h (uniwbrk_prop_index): New variable declaration.
* lib/uniwbrk/wbrktable.c (uniwbrk_prop_index): New variable.
(uniwbrk_table): Implement WB14.
* tests/uniwbrk/test-uc-wordbreaks.c (wordbreakproperty_to_string):
Check WBP_ZWJ, WBP_EB, WBP_EM, WBP_GAZ, and WBP_EBG.
* modules/unigbrk/u{32,16,8}-grapheme-breaks: No longer depend on
uc-is-grapheme-break.
* modules/unigbrk/uc-grapheme-breaks: New module.
* modules/unigbrk/uc-grapheme-breaks-tests: New module.
* lib/unigbrk.in.h (GBP_ZWJ, GBP_EB, GBP_EM, GBP_GAZ, GBP_EBG): New
enum value.
(uc_grapheme_breaks): New function, replacing uc_is_grapheme_break.
* lib/unigbrk/u-grapheme-breaks.h: New file.
* lib/unigbrk/u{32,16,8}-grapheme-breaks.c: Rewrite using
u-grapheme-breaks.h instead of uc_is_grapheme_break.
* lib/unigbrk/uc-grapheme-breaks.c: New file.
* lib/unigbrk/uc-is-grapheme-break.c: Partially update to TR29 rev 29.
* tests/unigbrk/test-uc-gbrk-prop.c (graphemebreakproperty_to_string):
Check GBP_ZWJ, GBP_EB, GBP_EM, GBP_GAZ, and GBP_EBG.
* tests/unigbrk/test-uc-grapheme-breaks.c: New test.
* tests/unigbrk/test-uc-is-grapheme-break.c (graphemebreakproperty_to_string):
Check GBP_ZWJ, GBP_EB, GBP_EM, GBP_GAZ, and GBP_EBG.
(main): Skip unsupported rules involving 3 or more characters, namely
GB10, GB12, and GB13.
* lib/uniwidth/width.c (nonspacing_table_data): Update.
author | Daiki Ueno <ueno@gnu.org> |
---|---|
date | Wed, 12 Oct 2016 17:40:37 +0200 |
parents | |
children | c1cbd8206d4b |
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/* Grapheme cluster break function. Copyright (C) 2010-2017 Free Software Foundation, Inc. Written by Ben Pfaff <blp@cs.stanford.edu>, 2010. This program is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ void FUNC (const UNIT *s, size_t n, char *p) { if (n > 0) { const UNIT *s_end = s + n; /* Grapheme Cluster break property of the last character. -1 at the very beginning of the string. */ int last_char_prop = -1; /* Grapheme Cluster break property of the last complex character. -1 at the very beginning of the string. */ int last_compchar_prop = -1; size_t ri_count = 0; /* Don't break inside multibyte characters. */ memset (p, 0, n); while (s < s_end) { ucs4_t uc; int count = U_MBTOUC (&uc, s, s_end - s); int prop = uc_graphemeclusterbreak_property (uc); /* Break at the start of the string (GB1). */ if (last_char_prop < 0) *p = 1; else { /* No break between CR and LF (GB3). */ if (last_char_prop == GBP_CR && prop == GBP_LF) /* *p = 0 */; /* Break before and after newlines (GB4, GB5). */ else if ((last_char_prop == GBP_CR || last_char_prop == GBP_LF || last_char_prop == GBP_CONTROL) || (prop == GBP_CR || prop == GBP_LF || prop == GBP_CONTROL)) *p = 1; /* No break between Hangul syllable sequences (GB6, GB7, GB8). */ else if ((last_char_prop == GBP_L && (prop == GBP_L || prop == GBP_V || prop == GBP_LV || prop == GBP_LVT)) || ((last_char_prop == GBP_LV || last_char_prop == GBP_V) && (prop == GBP_V || prop == GBP_T)) || ((last_char_prop == GBP_LVT || last_char_prop == GBP_T) && prop == GBP_T)) /* *p = 0 */; /* No break before extending characters or ZWJ (GB9). */ else if (prop == GBP_EXTEND || prop == GBP_ZWJ) /* *p = 0 */; /* No break before SpacingMarks (GB9a). */ else if (prop == GBP_SPACINGMARK) /* *p = 0 */; /* No break after Prepend characters (GB9b). */ else if (last_char_prop == GBP_PREPEND) /* *p = 0 */; /* No break within emoji modifier sequences (GB10). */ else if ((last_compchar_prop == GBP_EB || last_compchar_prop == GBP_EBG) && prop == GBP_EM) /* *p = 0 */; /* No break within emoji zwj sequences (GB11). */ else if (last_char_prop == GBP_ZWJ && (prop == GBP_GAZ || prop == GBP_EBG)) /* *p = 0 */; /* No break between RI if there is an odd number of RI characters before (GB12, GB13). */ else if (prop == GBP_RI) { if (ri_count % 2 == 0) *p = 1; /* else *p = 0; */ } /* Break everywhere (GBP999). */ else *p = 1; } last_char_prop = prop; if (!(prop == GBP_EXTEND && (last_compchar_prop == GBP_EB || last_compchar_prop == GBP_EBG))) last_compchar_prop = prop; if (prop == GBP_RI) ri_count++; else ri_count = 0; s += count; p += count; } } }