1 /*- 2 * Copyright 2013 Garrett D'Amore <garrett@damore.org> 3 * Copyright 2010 Nexenta Systems, Inc. All rights reserved. 4 * Copyright (c) 2002-2004 Tim J. Robbins. All rights reserved. 5 * Copyright (c) 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Paul Borman at Krystal Technologies. 10 * 11 * Copyright (c) 2011 The FreeBSD Foundation 12 * All rights reserved. 13 * Portions of this software were developed by David Chisnall 14 * under sponsorship from the FreeBSD Foundation. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 1. Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution. 24 * 3. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 */ 40 41 #if defined(LIBC_SCCS) && !defined(lint) 42 static char sccsid[] = "@(#)none.c 8.1 (Berkeley) 6/4/93"; 43 #endif /* LIBC_SCCS and not lint */ 44 #include <sys/cdefs.h> 45 __FBSDID("$FreeBSD$"); 46 47 #include <errno.h> 48 #include <limits.h> 49 #include <runetype.h> 50 #include <stddef.h> 51 #include <stdio.h> 52 #include <stdlib.h> 53 #include <string.h> 54 #include <wchar.h> 55 #include "mblocal.h" 56 57 static size_t _none_mbrtowc(wchar_t * __restrict, const char * __restrict, 58 size_t, mbstate_t * __restrict); 59 static int _none_mbsinit(const mbstate_t *); 60 static size_t _none_mbsnrtowcs(wchar_t * __restrict dst, 61 const char ** __restrict src, size_t nms, size_t len, 62 mbstate_t * __restrict ps __unused); 63 static size_t _none_wcrtomb(char * __restrict, wchar_t, 64 mbstate_t * __restrict); 65 static size_t _none_wcsnrtombs(char * __restrict, const wchar_t ** __restrict, 66 size_t, size_t, mbstate_t * __restrict); 67 68 /* setup defaults */ 69 70 int __mb_cur_max = 1; 71 int __mb_sb_limit = 256; /* Expected to be <= _CACHED_RUNES */ 72 73 int 74 _none_init(struct xlocale_ctype *l, _RuneLocale *rl) 75 { 76 77 l->__mbrtowc = _none_mbrtowc; 78 l->__mbsinit = _none_mbsinit; 79 l->__mbsnrtowcs = _none_mbsnrtowcs; 80 l->__wcrtomb = _none_wcrtomb; 81 l->__wcsnrtombs = _none_wcsnrtombs; 82 l->runes = rl; 83 l->__mb_cur_max = 1; 84 l->__mb_sb_limit = 256; 85 return(0); 86 } 87 88 static int 89 _none_mbsinit(const mbstate_t *ps __unused) 90 { 91 92 /* 93 * Encoding is not state dependent - we are always in the 94 * initial state. 95 */ 96 return (1); 97 } 98 99 static size_t 100 _none_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s, size_t n, 101 mbstate_t * __restrict ps __unused) 102 { 103 104 if (s == NULL) 105 /* Reset to initial shift state (no-op) */ 106 return (0); 107 if (n == 0) 108 /* Incomplete multibyte sequence */ 109 return ((size_t)-2); 110 if (pwc != NULL) 111 *pwc = (unsigned char)*s; 112 return (*s == '\0' ? 0 : 1); 113 } 114 115 static size_t 116 _none_wcrtomb(char * __restrict s, wchar_t wc, 117 mbstate_t * __restrict ps __unused) 118 { 119 120 if (s == NULL) 121 /* Reset to initial shift state (no-op) */ 122 return (1); 123 if (wc < 0 || wc > UCHAR_MAX) { 124 errno = EILSEQ; 125 return ((size_t)-1); 126 } 127 *s = (unsigned char)wc; 128 return (1); 129 } 130 131 static size_t 132 _none_mbsnrtowcs(wchar_t * __restrict dst, const char ** __restrict src, 133 size_t nms, size_t len, mbstate_t * __restrict ps __unused) 134 { 135 const char *s; 136 size_t nchr; 137 138 if (dst == NULL) { 139 s = memchr(*src, '\0', nms); 140 return (s != NULL ? s - *src : nms); 141 } 142 143 s = *src; 144 nchr = 0; 145 while (len-- > 0 && nms-- > 0) { 146 if ((*dst++ = (unsigned char)*s++) == L'\0') { 147 *src = NULL; 148 return (nchr); 149 } 150 nchr++; 151 } 152 *src = s; 153 return (nchr); 154 } 155 156 static size_t 157 _none_wcsnrtombs(char * __restrict dst, const wchar_t ** __restrict src, 158 size_t nwc, size_t len, mbstate_t * __restrict ps __unused) 159 { 160 const wchar_t *s; 161 size_t nchr; 162 163 if (dst == NULL) { 164 for (s = *src; nwc > 0 && *s != L'\0'; s++, nwc--) { 165 if (*s < 0 || *s > UCHAR_MAX) { 166 errno = EILSEQ; 167 return ((size_t)-1); 168 } 169 } 170 return (s - *src); 171 } 172 173 s = *src; 174 nchr = 0; 175 while (len-- > 0 && nwc-- > 0) { 176 if (*s < 0 || *s > UCHAR_MAX) { 177 *src = s; 178 errno = EILSEQ; 179 return ((size_t)-1); 180 } 181 if ((*dst++ = *s++) == '\0') { 182 *src = NULL; 183 return (nchr); 184 } 185 nchr++; 186 } 187 *src = s; 188 return (nchr); 189 } 190 191 /* setup defaults */ 192 193 struct xlocale_ctype __xlocale_global_ctype = { 194 {{0}, "C"}, 195 (_RuneLocale*)&_DefaultRuneLocale, 196 _none_mbrtowc, 197 _none_mbsinit, 198 _none_mbsnrtowcs, 199 _none_wcrtomb, 200 _none_wcsnrtombs, 201 1, /* __mb_cur_max, */ 202 256 /* __mb_sb_limit */ 203 }; 204 205 struct xlocale_ctype __xlocale_C_ctype = { 206 {{0}, "C"}, 207 (_RuneLocale*)&_DefaultRuneLocale, 208 _none_mbrtowc, 209 _none_mbsinit, 210 _none_mbsnrtowcs, 211 _none_wcrtomb, 212 _none_wcsnrtombs, 213 1, /* __mb_cur_max, */ 214 256 /* __mb_sb_limit */ 215 }; 216