none.c revision 132497
1254721Semaste/*- 2254721Semaste * Copyright (c) 2002-2004 Tim J. Robbins. All rights reserved. 3254721Semaste * Copyright (c) 1993 4254721Semaste * The Regents of the University of California. All rights reserved. 5254721Semaste * 6254721Semaste * This code is derived from software contributed to Berkeley by 7254721Semaste * Paul Borman at Krystal Technologies. 8254721Semaste * 9254721Semaste * Redistribution and use in source and binary forms, with or without 10254721Semaste * modification, are permitted provided that the following conditions 11254721Semaste * are met: 12254721Semaste * 1. Redistributions of source code must retain the above copyright 13254721Semaste * notice, this list of conditions and the following disclaimer. 14254721Semaste * 2. Redistributions in binary form must reproduce the above copyright 15254721Semaste * notice, this list of conditions and the following disclaimer in the 16254721Semaste * documentation and/or other materials provided with the distribution. 17254721Semaste * 3. All advertising materials mentioning features or use of this software 18254721Semaste * must display the following acknowledgement: 19254721Semaste * This product includes software developed by the University of 20254721Semaste * California, Berkeley and its contributors. 21254721Semaste * 4. Neither the name of the University nor the names of its contributors 22254721Semaste * may be used to endorse or promote products derived from this software 23254721Semaste * without specific prior written permission. 24254721Semaste * 25254721Semaste * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26254721Semaste * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27254721Semaste * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28254721Semaste * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29254721Semaste * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30254721Semaste * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31254721Semaste * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32254721Semaste * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33254721Semaste * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34254721Semaste * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35254721Semaste * SUCH DAMAGE. 36254721Semaste */ 37254721Semaste 38254721Semaste#if defined(LIBC_SCCS) && !defined(lint) 39254721Semastestatic char sccsid[] = "@(#)none.c 8.1 (Berkeley) 6/4/93"; 40254721Semaste#endif /* LIBC_SCCS and not lint */ 41254721Semaste#include <sys/cdefs.h> 42254721Semaste__FBSDID("$FreeBSD: head/lib/libc/locale/none.c 132497 2004-07-21 10:54:57Z tjr $"); 43254721Semaste 44254721Semaste#include <errno.h> 45254721Semaste#include <limits.h> 46254721Semaste#include <runetype.h> 47254721Semaste#include <stddef.h> 48254721Semaste#include <stdio.h> 49254721Semaste#include <stdlib.h> 50254721Semaste#include <string.h> 51254721Semaste#include <wchar.h> 52254721Semaste#include "mblocal.h" 53254721Semaste 54288943Sdimint _none_init(_RuneLocale *); 55254721Semastesize_t _none_mbrtowc(wchar_t * __restrict, const char * __restrict, size_t, 56254721Semaste mbstate_t * __restrict); 57254721Semasteint _none_mbsinit(const mbstate_t *); 58254721Semastesize_t _none_mbsnrtowcs(wchar_t * __restrict dst, 59288943Sdim const char ** __restrict src, size_t nms, size_t len, 60288943Sdim mbstate_t * __restrict ps __unused); 61288943Sdimsize_t _none_wcrtomb(char * __restrict, wchar_t, mbstate_t * __restrict); 62254721Semastesize_t _none_wcsnrtombs(char * __restrict, const wchar_t ** __restrict, 63288943Sdim size_t, size_t, mbstate_t * __restrict); 64254721Semaste 65254721Semasteint 66254721Semaste_none_init(_RuneLocale *rl) 67254721Semaste{ 68288943Sdim 69254721Semaste __mbrtowc = _none_mbrtowc; 70254721Semaste __mbsinit = _none_mbsinit; 71254721Semaste __mbsnrtowcs = _none_mbsnrtowcs; 72254721Semaste __wcrtomb = _none_wcrtomb; 73288943Sdim __wcsnrtombs = _none_wcsnrtombs; 74254721Semaste _CurrentRuneLocale = rl; 75254721Semaste __mb_cur_max = 1; 76254721Semaste return(0); 77288943Sdim} 78254721Semaste 79254721Semasteint 80254721Semaste_none_mbsinit(const mbstate_t *ps __unused) 81254721Semaste{ 82254721Semaste 83254721Semaste /* 84254721Semaste * Encoding is not state dependent - we are always in the 85254721Semaste * initial state. 86254721Semaste */ 87254721Semaste return (1); 88288943Sdim} 89254721Semaste 90254721Semastesize_t 91254721Semaste_none_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s, size_t n, 92288943Sdim mbstate_t * __restrict ps __unused) 93254721Semaste{ 94254721Semaste 95254721Semaste if (s == NULL) 96254721Semaste /* Reset to initial shift state (no-op) */ 97280031Sdim return (0); 98288943Sdim if (n == 0) 99254721Semaste /* Incomplete multibyte sequence */ 100280031Sdim return ((size_t)-2); 101280031Sdim if (pwc != NULL) 102280031Sdim *pwc = (unsigned char)*s; 103288943Sdim return (*s == '\0' ? 0 : 1); 104280031Sdim} 105280031Sdim 106280031Sdimsize_t 107288943Sdim_none_wcrtomb(char * __restrict s, wchar_t wc, 108254721Semaste mbstate_t * __restrict ps __unused) 109280031Sdim{ 110280031Sdim 111280031Sdim if (s == NULL) 112280031Sdim /* Reset to initial shift state (no-op) */ 113280031Sdim return (1); 114280031Sdim if (wc < 0 || wc > UCHAR_MAX) { 115280031Sdim errno = EILSEQ; 116280031Sdim return ((size_t)-1); 117254721Semaste } 118254721Semaste *s = (unsigned char)wc; 119254721Semaste return (1); 120254721Semaste} 121254721Semaste 122280031Sdimsize_t 123254721Semaste_none_mbsnrtowcs(wchar_t * __restrict dst, const char ** __restrict src, 124254721Semaste size_t nms, size_t len, mbstate_t * __restrict ps __unused) 125254721Semaste{ 126254721Semaste const char *s; 127254721Semaste size_t nchr; 128254721Semaste 129288943Sdim if (dst == NULL) { 130254721Semaste s = memchr(*src, '\0', nms); 131254721Semaste return (s != NULL ? s - *src : nms); 132254721Semaste } 133254721Semaste 134254721Semaste s = *src; 135254721Semaste nchr = 0; 136288943Sdim while (len-- > 0 && nms-- > 0) { 137254721Semaste if ((*dst++ = (unsigned char)*s++) == L'\0') { 138254721Semaste *src = NULL; 139254721Semaste return (nchr); 140288943Sdim } 141254721Semaste nchr++; 142280031Sdim } 143254721Semaste *src = s; 144254721Semaste return (nchr); 145254721Semaste} 146254721Semaste 147254721Semastesize_t 148254721Semaste_none_wcsnrtombs(char * __restrict dst, const wchar_t ** __restrict src, 149254721Semaste size_t nwc, size_t len, mbstate_t * __restrict ps __unused) 150254721Semaste{ 151254721Semaste const wchar_t *s; 152254721Semaste size_t nchr; 153254721Semaste 154254721Semaste if (dst == NULL) { 155254721Semaste for (s = *src; nwc > 0 && *s != L'\0'; s++, nwc--) { 156254721Semaste if (*s < 0 || *s > UCHAR_MAX) { 157254721Semaste errno = EILSEQ; 158254721Semaste return ((size_t)-1); 159254721Semaste } 160254721Semaste } 161254721Semaste return (s - *src); 162254721Semaste } 163254721Semaste 164254721Semaste s = *src; 165254721Semaste nchr = 0; 166254721Semaste while (len-- > 0 && nwc-- > 0) { 167254721Semaste if (*s < 0 || *s > UCHAR_MAX) { 168254721Semaste errno = EILSEQ; 169254721Semaste return ((size_t)-1); 170254721Semaste } 171254721Semaste if ((*dst++ = *s++) == '\0') { 172254721Semaste *src = NULL; 173254721Semaste return (nchr); 174254721Semaste } 175254721Semaste nchr++; 176254721Semaste } 177254721Semaste *src = s; 178254721Semaste return (nchr); 179254721Semaste} 180254721Semaste