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Commit	Line	Data
	1	/*-
	2	* Copyright (c) 2002-2004 Tim J. Robbins. All rights reserved.
	3	* Copyright (c) 1993
	4	* The Regents of the University of California. All rights reserved.
	5	*
	6	* This code is derived from software contributed to Berkeley by
	7	* Paul Borman at Krystal Technologies.
	8	*
	9	* Redistribution and use in source and binary forms, with or without
	10	* modification, are permitted provided that the following conditions
	11	* are met:
	12	* 1. Redistributions of source code must retain the above copyright
	13	* notice, this list of conditions and the following disclaimer.
	14	* 2. Redistributions in binary form must reproduce the above copyright
	15	* notice, this list of conditions and the following disclaimer in the
	16	* documentation and/or other materials provided with the distribution.
	17	* 4. Neither the name of the University nor the names of its contributors
	18	* may be used to endorse or promote products derived from this software
	19	* without specific prior written permission.
	20	*
	21	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	22	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	23	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	24	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	25	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	26	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	27	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	28	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	29	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	30	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	31	* SUCH DAMAGE.
	32	*/
	33
	34	#if defined(LIBC_SCCS) && !defined(lint)
	35	static char sccsid[] = "@(#)none.c 8.1 (Berkeley) 6/4/93";
	36	#endif /* LIBC_SCCS and not lint */
	37	#include <sys/cdefs.h>
	38	__FBSDID("$FreeBSD: src/lib/libc/locale/none.c,v 1.15 2007/10/13 16:28:22 ache Exp $");
	39
	40	#include "xlocale_private.h"
	41
	42	#include <errno.h>
	43	#include <limits.h>
	44	#include <runetype.h>
	45	#include <stddef.h>
	46	#include <stdio.h>
	47	#include <stdlib.h>
	48	#include <string.h>
	49	#include <wchar.h>
	50	#include "mblocal.h"
	51
	52	/* setup defaults */
	53
	54	int __mb_cur_max = 1;
	55	int __mb_sb_limit = 256; /* Expected to be <= _CACHED_RUNES */
	56
	57	__private_extern__ int
	58	_none_init(struct __xlocale_st_runelocale *xrl)
	59	{
	60
	61	xrl->__mbrtowc = _none_mbrtowc;
	62	xrl->__mbsinit = _none_mbsinit;
	63	xrl->__mbsnrtowcs = _none_mbsnrtowcs;
	64	xrl->__wcrtomb = _none_wcrtomb;
	65	xrl->__wcsnrtombs = _none_wcsnrtombs;
	66	xrl->__mb_cur_max = 1;
	67	xrl->__mb_sb_limit = 256;
	68	return(0);
	69	}
	70
	71	__private_extern__ int
	72	_none_mbsinit(const mbstate_t *ps __unused, locale_t loc __unused)
	73	{
	74
	75	/*
	76	* Encoding is not state dependent - we are always in the
	77	* initial state.
	78	*/
	79	return (1);
	80	}
	81
	82	__private_extern__ size_t
	83	_none_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s, size_t n,
	84	mbstate_t * __restrict ps __unused, locale_t loc __unused)
	85	{
	86
	87	if (s == NULL)
	88	/* Reset to initial shift state (no-op) */
	89	return (0);
	90	if (n == 0)
	91	/* Incomplete multibyte sequence */
	92	return ((size_t)-2);
	93	if (pwc != NULL)
	94	pwc = (unsigned char)s;
	95	return (*s == '\0' ? 0 : 1);
	96	}
	97
	98	__private_extern__ size_t
	99	_none_wcrtomb(char * __restrict s, wchar_t wc,
	100	mbstate_t * __restrict ps __unused, locale_t loc __unused)
	101	{
	102
	103	if (s == NULL)
	104	/* Reset to initial shift state (no-op) */
	105	return (1);
	106	if (wc < 0 \|\| wc > UCHAR_MAX) {
	107	errno = EILSEQ;
	108	return ((size_t)-1);
	109	}
	110	*s = (unsigned char)wc;
	111	return (1);
	112	}
	113
	114	__private_extern__ size_t
	115	_none_mbsnrtowcs(wchar_t * __restrict dst, const char ** __restrict src,
	116	size_t nms, size_t len, mbstate_t * __restrict ps __unused, locale_t loc __unused)
	117	{
	118	const char *s;
	119	size_t nchr;
	120
	121	if (dst == NULL) {
	122	s = memchr(*src, '\0', nms);
	123	return (s != NULL ? s - *src : nms);
	124	}
	125
	126	s = *src;
	127	nchr = 0;
	128	while (len-- > 0 && nms-- > 0) {
	129	if ((dst++ = (unsigned char)s++) == L'\0') {
	130	*src = NULL;
	131	return (nchr);
	132	}
	133	nchr++;
	134	}
	135	*src = s;
	136	return (nchr);
	137	}
	138
	139	__private_extern__ size_t
	140	_none_wcsnrtombs(char * __restrict dst, const wchar_t ** __restrict src,
	141	size_t nwc, size_t len, mbstate_t * __restrict ps __unused, locale_t loc __unused)
	142	{
	143	const wchar_t *s;
	144	size_t nchr;
	145
	146	if (dst == NULL) {
	147	for (s = src; nwc > 0 && s != L'\0'; s++, nwc--) {
	148	if (s < 0 \|\| s > UCHAR_MAX) {
	149	errno = EILSEQ;
	150	return ((size_t)-1);
	151	}
	152	}
	153	return (s - *src);
	154	}
	155
	156	s = *src;
	157	nchr = 0;
	158	while (len-- > 0 && nwc-- > 0) {
	159	if (s < 0 \|\| s > UCHAR_MAX) {
	160	errno = EILSEQ;
	161	return ((size_t)-1);
	162	}
	163	if ((dst++ = s++) == '\0') {
	164	*src = NULL;
	165	return (nchr);
	166	}
	167	nchr++;
	168	}
	169	*src = s;
	170	return (nchr);
	171	}