1 files changed, 45 insertions, 0 deletions
diff --git a/lib/mbsnlen.c b/lib/mbsnlen.c
new file mode 100644
index 00000000..5ed55567
--- /dev/null
+++ b/lib/mbsnlen.c
@@ -0,0 +1,45 @@
+/* Counting the multibyte characters in a string.
+   Copyright (C) 2007-2008 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2007.
+
+   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 <string.h>
+
+#include <stdlib.h>
+
+#include "mbiter.h"
+
+/* Return the number of multibyte characters in the character string starting
+   at STRING and ending at STRING + LEN.  */
+size_t
+mbsnlen (const char *string, size_t len)
+{
+  if (MB_CUR_MAX > 1)
+    {
+      size_t count;
+      mbi_iterator_t iter;
+
+      count = 0;
+      for (mbi_init (iter, string, len); mbi_avail (iter); mbi_advance (iter))
+	count++;
+
+      return count;
+    }
+  else
+    return len;
+}