1 /* 2 * Copyright 2010 Nexenta Systems, Inc. All rights reserved. 3 * Copyright (c) 2002-2004 Tim J. Robbins. All rights reserved. 4 * Copyright (c) 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Paul Borman at Krystal Technologies. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 4. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include "lint.h" 36 #include <errno.h> 37 #include <limits.h> 38 #include <stddef.h> 39 #include <stdio.h> 40 #include <stdlib.h> 41 #include <string.h> 42 #include <wchar.h> 43 #include <note.h> 44 #include "runetype.h" 45 #include "mblocal.h" 46 47 static size_t _none_mbrtowc(wchar_t *_RESTRICT_KYWD, 48 const char *_RESTRICT_KYWD, size_t, mbstate_t *_RESTRICT_KYWD); 49 50 static int _none_mbsinit(const mbstate_t *); 51 static size_t _none_mbsnrtowcs(wchar_t *_RESTRICT_KYWD dst, 52 const char **_RESTRICT_KYWD src, size_t nms, size_t len, 53 mbstate_t *_RESTRICT_KYWD); 54 static size_t _none_wcrtomb(char *_RESTRICT_KYWD, wchar_t, 55 mbstate_t *_RESTRICT_KYWD); 56 static size_t _none_wcsnrtombs(char *_RESTRICT_KYWD, 57 const wchar_t **_RESTRICT_KYWD, 58 size_t, size_t, mbstate_t *_RESTRICT_KYWD); 59 60 /* setup defaults */ 61 62 int 63 _none_init(_RuneLocale *rl) 64 { 65 charset_is_ascii = 1; 66 67 __mbrtowc = _none_mbrtowc; 68 __mbsinit = _none_mbsinit; 69 __mbsnrtowcs = _none_mbsnrtowcs; 70 __wcrtomb = _none_wcrtomb; 71 __wcsnrtombs = _none_wcsnrtombs; 72 _CurrentRuneLocale = rl; 73 return (0); 74 } 75 76 static int 77 _none_mbsinit(const mbstate_t *unused) 78 { 79 _NOTE(ARGUNUSED(unused)); 80 81 /* 82 * Encoding is not state dependent - we are always in the 83 * initial state. 84 */ 85 return (1); 86 } 87 88 static size_t 89 _none_mbrtowc(wchar_t *_RESTRICT_KYWD pwc, const char *_RESTRICT_KYWD s, 90 size_t n, mbstate_t *_RESTRICT_KYWD unused) 91 { 92 _NOTE(ARGUNUSED(unused)); 93 94 if (s == NULL) 95 /* Reset to initial shift state (no-op) */ 96 return (0); 97 if (n == 0) 98 /* Incomplete multibyte sequence */ 99 return ((size_t)-2); 100 if (pwc != NULL) 101 *pwc = (unsigned char)*s; 102 return (*s == '\0' ? 0 : 1); 103 } 104 105 static size_t 106 _none_wcrtomb(char *_RESTRICT_KYWD s, wchar_t wc, 107 mbstate_t *_RESTRICT_KYWD unused) 108 { 109 _NOTE(ARGUNUSED(unused)); 110 111 if (s == NULL) 112 /* Reset to initial shift state (no-op) */ 113 return (1); 114 if (wc < 0 || wc > UCHAR_MAX) { 115 errno = EILSEQ; 116 return ((size_t)-1); 117 } 118 *s = (unsigned char)wc; 119 return (1); 120 } 121 122 static size_t 123 _none_mbsnrtowcs(wchar_t *_RESTRICT_KYWD dst, const char **_RESTRICT_KYWD src, 124 size_t nms, size_t len, mbstate_t *_RESTRICT_KYWD unused) 125 { 126 const char *s; 127 size_t nchr; 128 129 _NOTE(ARGUNUSED(unused)); 130 131 if (dst == NULL) { 132 s = memchr(*src, '\0', nms); 133 return (s != NULL ? s - *src : nms); 134 } 135 136 s = *src; 137 nchr = 0; 138 while (len-- > 0 && nms-- > 0) { 139 if ((*dst++ = (unsigned char)*s++) == L'\0') { 140 *src = NULL; 141 return (nchr); 142 } 143 nchr++; 144 } 145 *src = s; 146 return (nchr); 147 } 148 149 static size_t 150 _none_wcsnrtombs(char *_RESTRICT_KYWD dst, const wchar_t **_RESTRICT_KYWD src, 151 size_t nwc, size_t len, mbstate_t *_RESTRICT_KYWD unused) 152 { 153 const wchar_t *s; 154 size_t nchr; 155 156 _NOTE(ARGUNUSED(unused)); 157 158 if (dst == NULL) { 159 for (s = *src; nwc > 0 && *s != L'\0'; s++, nwc--) { 160 if (*s < 0 || *s > UCHAR_MAX) { 161 errno = EILSEQ; 162 return ((size_t)-1); 163 } 164 } 165 return (s - *src); 166 } 167 168 s = *src; 169 nchr = 0; 170 while (len-- > 0 && nwc-- > 0) { 171 if (*s < 0 || *s > UCHAR_MAX) { 172 errno = EILSEQ; 173 return ((size_t)-1); 174 } 175 if ((*dst++ = *s++) == '\0') { 176 *src = NULL; 177 return (nchr); 178 } 179 nchr++; 180 } 181 *src = s; 182 return (nchr); 183 } 184 185 /* setup defaults */ 186 187 size_t (*__mbrtowc)(wchar_t *_RESTRICT_KYWD, const char *_RESTRICT_KYWD, 188 size_t, mbstate_t *_RESTRICT_KYWD) = _none_mbrtowc; 189 190 int (*__mbsinit)(const mbstate_t *) = _none_mbsinit; 191 192 size_t (*__mbsnrtowcs)(wchar_t *_RESTRICT_KYWD, const char **_RESTRICT_KYWD, 193 size_t, size_t, mbstate_t *_RESTRICT_KYWD) = _none_mbsnrtowcs; 194 195 size_t (*__wcrtomb)(char *_RESTRICT_KYWD, wchar_t, mbstate_t *_RESTRICT_KYWD) = 196 _none_wcrtomb; 197 198 size_t (*__wcsnrtombs)(char *_RESTRICT_KYWD, const wchar_t **_RESTRICT_KYWD, 199 size_t, size_t, mbstate_t *_RESTRICT_KYWD) = _none_wcsnrtombs; 200