diff options
Diffstat (limited to 'lib/unigbrk/uc-is-grapheme-break.c')
| -rw-r--r-- | lib/unigbrk/uc-is-grapheme-break.c | 111 |
1 files changed, 0 insertions, 111 deletions
diff --git a/lib/unigbrk/uc-is-grapheme-break.c b/lib/unigbrk/uc-is-grapheme-break.c deleted file mode 100644 index 049cc4c..0000000 --- a/lib/unigbrk/uc-is-grapheme-break.c +++ /dev/null @@ -1,111 +0,0 @@ -/* Grapheme cluster break function. - Copyright (C) 2010-2015 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/>. */ - -#include <config.h> - -/* Specification. */ -#include "unigbrk.h" - -/* Evaluates to true if there is an extended grapheme cluster break between - code points with GBP_* values A and B, false if there is not. The comments - are the grapheme cluster boundary rules from in UAX #29. */ -#define UC_IS_GRAPHEME_BREAK(A, B) \ - (/* GB1 and GB2 are covered--just use a GBP_CONTROL character, such \ - as 0, for sot and eot. */ \ - \ - /* GB3 */ \ - (A) == GBP_CR && (B) == GBP_LF ? false : \ - \ - /* GB4 */ \ - (A) == GBP_CONTROL || (A) == GBP_CR || (A) == GBP_LF ? true : \ - \ - /* GB5 */ \ - (B) == GBP_CONTROL || (B) == GBP_CR || (B) == GBP_LF ? true : \ - \ - /* GB6 */ \ - (A) == GBP_L && ((B) == GBP_L || (B) == GBP_V \ - || (B) == GBP_LV || (B) == GBP_LVT) ? false : \ - \ - /* GB7 */ \ - ((A) == GBP_LV || (A) == GBP_V) \ - && ((B) == GBP_V || (B) == GBP_T) ? false : \ - \ - /* GB8 */ \ - ((A) == GBP_LVT || (A) == GBP_T) && (B) == GBP_T ? false : \ - \ - /* GB8a */ \ - (A) == GBP_RI && (B) == GBP_RI ? false : \ - \ - /* GB9 */ \ - (B) == GBP_EXTEND ? false : \ - \ - /* GB9a */ \ - (B) == GBP_SPACINGMARK ? false : \ - \ - /* GB9b */ \ - (A) == GBP_PREPEND ? false \ - \ - /* GB10 */ \ - : true) - -#define UC_GRAPHEME_BREAKS_FOR(A) \ - ( (UC_IS_GRAPHEME_BREAK(A, GBP_OTHER) << GBP_OTHER) \ - | (UC_IS_GRAPHEME_BREAK(A, GBP_CR) << GBP_CR) \ - | (UC_IS_GRAPHEME_BREAK(A, GBP_LF) << GBP_LF) \ - | (UC_IS_GRAPHEME_BREAK(A, GBP_CONTROL) << GBP_CONTROL) \ - | (UC_IS_GRAPHEME_BREAK(A, GBP_EXTEND) << GBP_EXTEND) \ - | (UC_IS_GRAPHEME_BREAK(A, GBP_PREPEND) << GBP_PREPEND) \ - | (UC_IS_GRAPHEME_BREAK(A, GBP_SPACINGMARK) << GBP_SPACINGMARK) \ - | (UC_IS_GRAPHEME_BREAK(A, GBP_L) << GBP_L) \ - | (UC_IS_GRAPHEME_BREAK(A, GBP_V) << GBP_V) \ - | (UC_IS_GRAPHEME_BREAK(A, GBP_T) << GBP_T) \ - | (UC_IS_GRAPHEME_BREAK(A, GBP_LV) << GBP_LV) \ - | (UC_IS_GRAPHEME_BREAK(A, GBP_LVT) << GBP_LVT) \ - | (UC_IS_GRAPHEME_BREAK(A, GBP_RI) << GBP_RI)) - -static const unsigned short int gb_table[13] = - { - UC_GRAPHEME_BREAKS_FOR(0), /* GBP_OTHER */ - UC_GRAPHEME_BREAKS_FOR(1), /* GBP_CR */ - UC_GRAPHEME_BREAKS_FOR(2), /* GBP_LF */ - UC_GRAPHEME_BREAKS_FOR(3), /* GBP_CONTROL */ - UC_GRAPHEME_BREAKS_FOR(4), /* GBP_EXTEND */ - UC_GRAPHEME_BREAKS_FOR(5), /* GBP_PREPEND */ - UC_GRAPHEME_BREAKS_FOR(6), /* GBP_SPACINGMARK */ - UC_GRAPHEME_BREAKS_FOR(7), /* GBP_L */ - UC_GRAPHEME_BREAKS_FOR(8), /* GBP_V */ - UC_GRAPHEME_BREAKS_FOR(9), /* GBP_T */ - UC_GRAPHEME_BREAKS_FOR(10), /* GBP_LV */ - UC_GRAPHEME_BREAKS_FOR(11), /* GBP_LVT */ - UC_GRAPHEME_BREAKS_FOR(12), /* GBP_RI */ - }; - -bool -uc_is_grapheme_break (ucs4_t a, ucs4_t b) -{ - int a_gcp, b_gcp; - - if ((a | b) < 0x300) - { - /* GB3 is the only relevant rule for this case. */ - return a != '\r' || b != '\n'; - } - - a_gcp = uc_graphemeclusterbreak_property (a); - b_gcp = uc_graphemeclusterbreak_property (b); - return (gb_table[a_gcp] >> b_gcp) & 1; -} |