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 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include "lint.h" 37 #include <errno.h> 38 #include <limits.h> 39 #include <stddef.h> 40 #include <stdio.h> 41 #include <stdlib.h> 42 #include <string.h> 43 #include <wchar.h> 44 #include <note.h> 45 #include "mblocal.h" 46 #include "lctype.h" 47 48 /* setup defaults */ 49 50 void 51 _none_init(struct lc_ctype *lct) 52 { 53 lct->lc_is_ascii = 1; 54 lct->lc_mbrtowc = __mbrtowc_ascii; 55 lct->lc_mbsinit = __mbsinit_ascii; 56 lct->lc_mbsnrtowcs = __mbsnrtowcs_ascii; 57 lct->lc_wcrtomb = __wcrtomb_ascii; 58 lct->lc_wcsnrtombs = __wcsnrtombs_ascii; 59 lct->lc_max_mblen = 1; 60 } 61 62 int 63 __mbsinit_ascii(const mbstate_t *unused) 64 { 65 _NOTE(ARGUNUSED(unused)); 66 67 /* 68 * Encoding is not state dependent - we are always in the 69 * initial state. 70 */ 71 return (1); 72 } 73 74 size_t 75 __mbrtowc_ascii(wchar_t *_RESTRICT_KYWD pwc, const char *_RESTRICT_KYWD s, 76 size_t n, mbstate_t *_RESTRICT_KYWD unused) 77 { 78 _NOTE(ARGUNUSED(unused)); 79 80 if (s == NULL) 81 /* Reset to initial shift state (no-op) */ 82 return (0); 83 if (n == 0) 84 /* Incomplete multibyte sequence */ 85 return ((size_t)-2); 86 if (pwc != NULL) 87 *pwc = (unsigned char)*s; 88 return (*s == '\0' ? 0 : 1); 89 } 90 91 size_t 92 __wcrtomb_ascii(char *_RESTRICT_KYWD s, wchar_t wc, 93 mbstate_t *_RESTRICT_KYWD unused) 94 { 95 _NOTE(ARGUNUSED(unused)); 96 97 if (s == NULL) 98 /* Reset to initial shift state (no-op) */ 99 return (1); 100 if (wc < 0 || wc > UCHAR_MAX) { 101 errno = EILSEQ; 102 return ((size_t)-1); 103 } 104 *s = (unsigned char)wc; 105 return (1); 106 } 107 108 size_t 109 __mbsnrtowcs_ascii(wchar_t *_RESTRICT_KYWD dst, const char **_RESTRICT_KYWD src, 110 size_t nms, size_t len, mbstate_t *_RESTRICT_KYWD unused) 111 { 112 const char *s; 113 size_t nchr; 114 115 _NOTE(ARGUNUSED(unused)); 116 117 if (dst == NULL) { 118 s = memchr(*src, '\0', nms); 119 return (s != NULL ? s - *src : nms); 120 } 121 122 s = *src; 123 nchr = 0; 124 while (len-- > 0 && nms-- > 0) { 125 if ((*dst++ = (unsigned char)*s++) == L'\0') { 126 *src = NULL; 127 return (nchr); 128 } 129 nchr++; 130 } 131 *src = s; 132 return (nchr); 133 } 134 135 size_t 136 __wcsnrtombs_ascii(char *_RESTRICT_KYWD dst, const wchar_t **_RESTRICT_KYWD src, 137 size_t nwc, size_t len, mbstate_t *_RESTRICT_KYWD unused) 138 { 139 const wchar_t *s; 140 size_t nchr; 141 142 _NOTE(ARGUNUSED(unused)); 143 144 if (dst == NULL) { 145 for (s = *src; nwc > 0 && *s != L'\0'; s++, nwc--) { 146 if (*s < 0 || *s > UCHAR_MAX) { 147 errno = EILSEQ; 148 return ((size_t)-1); 149 } 150 } 151 return (s - *src); 152 } 153 154 s = *src; 155 nchr = 0; 156 while (len-- > 0 && nwc-- > 0) { 157 if (*s < 0 || *s > UCHAR_MAX) { 158 errno = EILSEQ; 159 return ((size_t)-1); 160 } 161 if ((*dst++ = *s++) == '\0') { 162 *src = NULL; 163 return (nchr); 164 } 165 nchr++; 166 } 167 *src = s; 168 return (nchr); 169 } 170