1 files changed, 33 insertions, 0 deletions
diff --git a/strings/ctype-utf32.h b/strings/ctype-utf32.h
new file mode 100644
index 00000000..e295dc6d
--- /dev/null
+++ b/strings/ctype-utf32.h
@@ -0,0 +1,33 @@
+/*
+  Copyright (c) 2018 MariaDB Corporation
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; version 2 of the License.
+
+  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 General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+*/
+
+#ifndef _CTYPE_UTF32_H
+#define _CTYPE_UTF32_H
+
+#define MY_UTF32_WC4(b0,b1,b2,b3)  ((((my_wc_t)b0) << 24) + (b1 << 16) + \
+                                                (b2 << 8) + (b3))
+
+static inline int
+my_mb_wc_utf32_quick(my_wc_t *pwc, const uchar *s, const uchar *e)
+{
+  if (s + 4 > e)
+    return MY_CS_TOOSMALL4;
+  *pwc= MY_UTF32_WC4(s[0], s[1], s[2], s[3]);
+  return *pwc > 0x10FFFF ? MY_CS_ILSEQ : 4;
+}
+
+#endif /* _CTYPE_UTF32_H */