+/* Iterate over next character in UTF-32 string.
+ Copyright (C) 2002, 2006-2007 Free Software Foundation, Inc.
+ Written by Bruno Haible <bruno@clisp.org>, 2002.
+
+ This program is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Library General Public License as published
+ by the Free Software Foundation; either version 2, 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+ USA. */
+
+#include <config.h>
+
+/* Specification. */
+#include "unistr.h"
+
+const uint32_t *
+u32_next (ucs4_t *puc, const uint32_t *s)
+{
+ int count;
+
+ count = u32_strmbtouc (puc, s);
+ if (count > 0)
+ return s + count;
+ else
+ {
+#if CONFIG_UNICODE_SAFETY
+ if (count < 0)
+ *puc = 0xfffd;
+#endif
+ return NULL;
+ }
+}