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authorManuel A. Fernandez Montecelo <manuel.montezelo@gmail.com>2016-05-26 16:48:39 +0100
committerManuel A. Fernandez Montecelo <manuel.montezelo@gmail.com>2016-05-26 16:48:39 +0100
commit8dfc46115527afe3706e9e4225e9ad019c97d695 (patch)
tree372d5192b218455834781a0037c57e919a06b488 /lib/unigbrk/uc-gbrk-prop.c
parent2291cf138eb72ad38d8c59b8b6f762875c8c4ff2 (diff)
parent5f2b09982312c98863eb9a8dfe2c608b81f58259 (diff)
Merge tag 'upstream/0.9.6'
Upstream version 0.9.6
Diffstat (limited to 'lib/unigbrk/uc-gbrk-prop.c')
-rw-r--r--lib/unigbrk/uc-gbrk-prop.c45
1 files changed, 45 insertions, 0 deletions
diff --git a/lib/unigbrk/uc-gbrk-prop.c b/lib/unigbrk/uc-gbrk-prop.c
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+/* Grapheme cluster break property 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"
+
+#include "gbrkprop.h"
+
+int
+uc_graphemeclusterbreak_property (ucs4_t uc)
+{
+ unsigned int index1 = uc >> gbrkprop_header_0;
+ if (index1 < gbrkprop_header_1)
+ {
+ int lookup1 = unigbrkprop.level1[index1];
+ if (lookup1 >= 0)
+ {
+ unsigned int index2 = (uc >> gbrkprop_header_2) & gbrkprop_header_3;
+ int lookup2 = unigbrkprop.level2[lookup1 + index2];
+ if (lookup2 >= 0)
+ {
+ unsigned int index3 = uc & gbrkprop_header_4;
+ unsigned char lookup3 = unigbrkprop.level3[lookup2 + index3 / 2];
+ return (lookup3 >> ((uc & 1) << 2)) & 0x0f;
+ }
+ }
+ }
+ return GBP_OTHER;
+}