1 files changed, 45 insertions, 0 deletions
diff --git a/lib/unigbrk/uc-gbrk-prop.c b/lib/unigbrk/uc-gbrk-prop.c
new file mode 100644
index 00000000..2c984909
--- /dev/null
+++ 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;
+}