1 files changed, 46 insertions, 0 deletions
diff --git a/lib/unigbrk/u8-grapheme-breaks.c b/lib/unigbrk/u8-grapheme-breaks.c
new file mode 100644
index 00000000..ede04246
--- /dev/null
+++ b/lib/unigbrk/u8-grapheme-breaks.c
@@ -0,0 +1,46 @@
+/* Grapheme cluster breaks function.
+   Copyright (C) 2001-2003, 2006-2015 Free Software Foundation, Inc.
+   Written by Ben Pfaff <blp@cs.stanford.edu>, 2010,
+   based on code written by Bruno Haible <bruno@clisp.org>, 2009.
+
+   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 "unistr.h"
+
+void
+u8_grapheme_breaks (const uint8_t *s, size_t n, char *p)
+{
+  ucs4_t prev;
+  int mblen;
+
+  prev = 0;
+  for (; n > 0; s += mblen, p += mblen, n -= mblen)
+    {
+      ucs4_t next;
+      int i;
+
+      mblen = u8_mbtouc (&next, s, n);
+
+      p[0] = uc_is_grapheme_break (prev, next);
+      for (i = 1; i < mblen; i++)
+        p[i] = 0;
+
+      prev = next;
+    }
+}