--- /dev/null
+/*-
+ * Copyright (c) 2002-2004 Tim J. Robbins. All rights reserved.
+ * 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.
+ *
+ * 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.
+ * 4. 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 <sys/cdefs.h>
+__FBSDID("$FreeBSD: src/lib/libc/locale/ascii.c,v 1.1 2008/01/21 23:48:12 ache Exp $");
+
+#include <errno.h>
+#include <limits.h>
+#include <runetype.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+#include "mblocal.h"
+
+static size_t _ascii_mbrtowc(wchar_t * __restrict, const char * __restrict,
+ size_t, mbstate_t * __restrict);
+static int _ascii_mbsinit(const mbstate_t *);
+static size_t _ascii_mbsnrtowcs(wchar_t * __restrict dst,
+ const char ** __restrict src, size_t nms, size_t len,
+ mbstate_t * __restrict ps __unused);
+static size_t _ascii_wcrtomb(char * __restrict, wchar_t,
+ mbstate_t * __restrict);
+static size_t _ascii_wcsnrtombs(char * __restrict, const wchar_t ** __restrict,
+ size_t, size_t, mbstate_t * __restrict);
+
+int
+_ascii_init(_RuneLocale *rl)
+{
+
+ __mbrtowc = _ascii_mbrtowc;
+ __mbsinit = _ascii_mbsinit;
+ __mbsnrtowcs = _ascii_mbsnrtowcs;
+ __wcrtomb = _ascii_wcrtomb;
+ __wcsnrtombs = _ascii_wcsnrtombs;
+ _CurrentRuneLocale = rl;
+ __mb_cur_max = 1;
+ __mb_sb_limit = 128;
+ return(0);
+}
+
+static int
+_ascii_mbsinit(const mbstate_t *ps __unused)
+{
+
+ /*
+ * Encoding is not state dependent - we are always in the
+ * initial state.
+ */
+ return (1);
+}
+
+static size_t
+_ascii_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s, size_t n,
+ mbstate_t * __restrict ps __unused)
+{
+
+ if (s == NULL)
+ /* Reset to initial shift state (no-op) */
+ return (0);
+ if (n == 0)
+ /* Incomplete multibyte sequence */
+ return ((size_t)-2);
+ if (*s & 0x80) {
+ errno = EILSEQ;
+ return ((size_t)-1);
+ }
+ if (pwc != NULL)
+ *pwc = (unsigned char)*s;
+ return (*s == '\0' ? 0 : 1);
+}
+
+static size_t
+_ascii_wcrtomb(char * __restrict s, wchar_t wc,
+ mbstate_t * __restrict ps __unused)
+{
+
+ if (s == NULL)
+ /* Reset to initial shift state (no-op) */
+ return (1);
+ if (wc < 0 || wc > 127) {
+ errno = EILSEQ;
+ return ((size_t)-1);
+ }
+ *s = (unsigned char)wc;
+ return (1);
+}
+
+static size_t
+_ascii_mbsnrtowcs(wchar_t * __restrict dst, const char ** __restrict src,
+ size_t nms, size_t len, mbstate_t * __restrict ps __unused)
+{
+ const char *s;
+ size_t nchr;
+
+ if (dst == NULL) {
+ for (s = *src; nms > 0 && *s != '\0'; s++, nms--) {
+ if (*s & 0x80) {
+ errno = EILSEQ;
+ return ((size_t)-1);
+ }
+ }
+ return (s - *src);
+ }
+
+ s = *src;
+ nchr = 0;
+ while (len-- > 0 && nms-- > 0) {
+ if (*s & 0x80) {
+ errno = EILSEQ;
+ return ((size_t)-1);
+ }
+ if ((*dst++ = (unsigned char)*s++) == L'\0') {
+ *src = NULL;
+ return (nchr);
+ }
+ nchr++;
+ }
+ *src = s;
+ return (nchr);
+}
+
+static size_t
+_ascii_wcsnrtombs(char * __restrict dst, const wchar_t ** __restrict src,
+ size_t nwc, size_t len, mbstate_t * __restrict ps __unused)
+{
+ const wchar_t *s;
+ size_t nchr;
+
+ if (dst == NULL) {
+ for (s = *src; nwc > 0 && *s != L'\0'; s++, nwc--) {
+ if (*s < 0 || *s > 127) {
+ errno = EILSEQ;
+ return ((size_t)-1);
+ }
+ }
+ return (s - *src);
+ }
+
+ s = *src;
+ nchr = 0;
+ while (len-- > 0 && nwc-- > 0) {
+ if (*s < 0 || *s > 127) {
+ errno = EILSEQ;
+ return ((size_t)-1);
+ }
+ if ((*dst++ = *s++) == '\0') {
+ *src = NULL;
+ return (nchr);
+ }
+ nchr++;
+ }
+ *src = s;
+ return (nchr);
+}
+
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