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 /* 35 * Copyright 2010 Nexenta Systems, Inc. All rights reserved. 36 * Use is subject to license terms. 37 */ 38 39 #include "lint.h" 40 #include <errno.h> 41 #include <limits.h> 42 #include <stddef.h> 43 #include <stdio.h> 44 #include <stdlib.h> 45 #include <string.h> 46 #include <wchar.h> 47 #include <note.h> 48 #include "runetype.h" 49 #include "mblocal.h" 50 #include "../i18n/_locale.h" 51 52 static size_t _none_mbrtowc(wchar_t *_RESTRICT_KYWD, 53 const char *_RESTRICT_KYWD, size_t, mbstate_t *_RESTRICT_KYWD); 54 55 static int _none_mbsinit(const mbstate_t *); 56 static size_t _none_mbsnrtowcs(wchar_t *_RESTRICT_KYWD dst, 57 const char **_RESTRICT_KYWD src, size_t nms, size_t len, 58 mbstate_t *_RESTRICT_KYWD); 59 static size_t _none_wcrtomb(char *_RESTRICT_KYWD, wchar_t, 60 mbstate_t *_RESTRICT_KYWD); 61 static size_t _none_wcsnrtombs(char *_RESTRICT_KYWD, 62 const wchar_t **_RESTRICT_KYWD, 63 size_t, size_t, mbstate_t *_RESTRICT_KYWD); 64 65 /* setup defaults */ 66 67 extern unsigned char __ctype_C[]; 68 69 int 70 _none_init(_RuneLocale *rl) 71 { 72 /* 73 * We need to populate the ctype stuff. This means the 74 * tolower table, the type masks, etc. 75 * There are 257 entries for the type array, 257 entries for the 76 * tolower/toupper array, and 7 bytes for CSWIDTH array. 77 * 78 * We have to set this stuff up because for POSIX/C we short 79 * circuit most of the logic in setrunelocale that would handle it. 80 */ 81 (void) memcpy(__ctype, __ctype_C, SZ_TOTAL); 82 83 charset_is_ascii = 1; 84 85 __ctype_mask = rl->__runetype; 86 __trans_upper = rl->__mapupper; 87 __trans_lower = rl->__maplower; 88 89 __mbrtowc = _none_mbrtowc; 90 __mbsinit = _none_mbsinit; 91 __mbsnrtowcs = _none_mbsnrtowcs; 92 __wcrtomb = _none_wcrtomb; 93 __wcsnrtombs = _none_wcsnrtombs; 94 _CurrentRuneLocale = rl; 95 return (0); 96 } 97 98 static int 99 _none_mbsinit(const mbstate_t *unused) 100 { 101 _NOTE(ARGUNUSED(unused)); 102 103 /* 104 * Encoding is not state dependent - we are always in the 105 * initial state. 106 */ 107 return (1); 108 } 109 110 static size_t 111 _none_mbrtowc(wchar_t *_RESTRICT_KYWD pwc, const char *_RESTRICT_KYWD s, 112 size_t n, mbstate_t *_RESTRICT_KYWD unused) 113 { 114 _NOTE(ARGUNUSED(unused)); 115 116 if (s == NULL) 117 /* Reset to initial shift state (no-op) */ 118 return (0); 119 if (n == 0) 120 /* Incomplete multibyte sequence */ 121 return ((size_t)-2); 122 if (pwc != NULL) 123 *pwc = (unsigned char)*s; 124 return (*s == '\0' ? 0 : 1); 125 } 126 127 static size_t 128 _none_wcrtomb(char *_RESTRICT_KYWD s, wchar_t wc, 129 mbstate_t *_RESTRICT_KYWD unused) 130 { 131 _NOTE(ARGUNUSED(unused)); 132 133 if (s == NULL) 134 /* Reset to initial shift state (no-op) */ 135 return (1); 136 if (wc < 0 || wc > UCHAR_MAX) { 137 errno = EILSEQ; 138 return ((size_t)-1); 139 } 140 *s = (unsigned char)wc; 141 return (1); 142 } 143 144 static size_t 145 _none_mbsnrtowcs(wchar_t *_RESTRICT_KYWD dst, const char **_RESTRICT_KYWD src, 146 size_t nms, size_t len, mbstate_t *_RESTRICT_KYWD unused) 147 { 148 const char *s; 149 size_t nchr; 150 151 _NOTE(ARGUNUSED(unused)); 152 153 if (dst == NULL) { 154 s = memchr(*src, '\0', nms); 155 return (s != NULL ? s - *src : nms); 156 } 157 158 s = *src; 159 nchr = 0; 160 while (len-- > 0 && nms-- > 0) { 161 if ((*dst++ = (unsigned char)*s++) == L'\0') { 162 *src = NULL; 163 return (nchr); 164 } 165 nchr++; 166 } 167 *src = s; 168 return (nchr); 169 } 170 171 static size_t 172 _none_wcsnrtombs(char *_RESTRICT_KYWD dst, const wchar_t **_RESTRICT_KYWD src, 173 size_t nwc, size_t len, mbstate_t *_RESTRICT_KYWD unused) 174 { 175 const wchar_t *s; 176 size_t nchr; 177 178 _NOTE(ARGUNUSED(unused)); 179 180 if (dst == NULL) { 181 for (s = *src; nwc > 0 && *s != L'\0'; s++, nwc--) { 182 if (*s < 0 || *s > UCHAR_MAX) { 183 errno = EILSEQ; 184 return ((size_t)-1); 185 } 186 } 187 return (s - *src); 188 } 189 190 s = *src; 191 nchr = 0; 192 while (len-- > 0 && nwc-- > 0) { 193 if (*s < 0 || *s > UCHAR_MAX) { 194 errno = EILSEQ; 195 return ((size_t)-1); 196 } 197 if ((*dst++ = *s++) == '\0') { 198 *src = NULL; 199 return (nchr); 200 } 201 nchr++; 202 } 203 *src = s; 204 return (nchr); 205 } 206 207 /* setup defaults */ 208 209 size_t (*__mbrtowc)(wchar_t *_RESTRICT_KYWD, const char *_RESTRICT_KYWD, 210 size_t, mbstate_t *_RESTRICT_KYWD) = _none_mbrtowc; 211 212 int (*__mbsinit)(const mbstate_t *) = _none_mbsinit; 213 214 size_t (*__mbsnrtowcs)(wchar_t *_RESTRICT_KYWD, const char **_RESTRICT_KYWD, 215 size_t, size_t, mbstate_t *_RESTRICT_KYWD) = _none_mbsnrtowcs; 216 217 size_t (*__wcrtomb)(char *_RESTRICT_KYWD, wchar_t, mbstate_t *_RESTRICT_KYWD) = 218 _none_wcrtomb; 219 220 size_t (*__wcsnrtombs)(char *_RESTRICT_KYWD, const wchar_t **_RESTRICT_KYWD, 221 size_t, size_t, mbstate_t *_RESTRICT_KYWD) = _none_wcsnrtombs; 222