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/*-
* 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("$FreeBSD$");
#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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