1 files changed, 88 insertions, 0 deletions
diff --git a/lib/libc/locale/runetype.c b/lib/libc/locale/runetype.c
new file mode 100644
index 000000000000..e26104e97234
--- /dev/null
+++ b/lib/libc/locale/runetype.c
@@ -0,0 +1,88 @@
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Paul Borman at Krystal Technologies.
+ *
+ * Copyright (c) 2011 The FreeBSD Foundation
+ *
+ * Portions of this software were developed by David Chisnall
+ * under sponsorship from the FreeBSD Foundation.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <ctype.h>
+#include <stdio.h>
+#include <runetype.h>
+#include <wchar.h>
+#include "mblocal.h"
+
+unsigned long
+___runetype_l(__ct_rune_t c, locale_t locale)
+{
+	size_t lim;
+	FIX_LOCALE(locale);
+	_RuneRange *rr = &(XLOCALE_CTYPE(locale)->runes->__runetype_ext);
+	_RuneEntry *base, *re;
+
+	if (c < 0 || c == EOF)
+		return(0L);
+
+	/* Binary search -- see bsearch.c for explanation. */
+	base = rr->__ranges;
+	for (lim = rr->__nranges; lim != 0; lim >>= 1) {
+		re = base + (lim >> 1);
+		if (re->__min <= c && c <= re->__max) {
+			if (re->__types)
+			    return(re->__types[c - re->__min]);
+			else
+			    return(re->__map);
+		} else if (c > re->__max) {
+			base = re + 1;
+			lim--;
+		}
+	}
+
+	return(0L);
+}
+unsigned long
+___runetype(__ct_rune_t c)
+{
+	return ___runetype_l(c, __get_locale());
+}
+
+int ___mb_cur_max(void)
+{
+	return XLOCALE_CTYPE(__get_locale())->__mb_cur_max;
+}
+int ___mb_cur_max_l(locale_t locale)
+{
+	FIX_LOCALE(locale);
+	return XLOCALE_CTYPE(locale)->__mb_cur_max;
+}