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 "mblocal.h" 45 #include "lctype.h" 46 47 /* setup defaults */ 48 49 void 50 _none_init(struct lc_ctype *lct) 51 { 52 lct->lc_is_ascii = 1; 53 lct->lc_mbrtowc = __mbrtowc_ascii; 54 lct->lc_mbsinit = __mbsinit_ascii; 55 lct->lc_mbsnrtowcs = __mbsnrtowcs_ascii; 56 lct->lc_wcrtomb = __wcrtomb_ascii; 57 lct->lc_wcsnrtombs = __wcsnrtombs_ascii; 58 lct->lc_max_mblen = 1; 59 } 60 61 int 62 __mbsinit_ascii(const mbstate_t *unused __unused) 63 { 64 /* 65 * Encoding is not state dependent - we are always in the 66 * initial state. 67 */ 68 return (1); 69 } 70 71 size_t 72 __mbrtowc_ascii(wchar_t *_RESTRICT_KYWD pwc, const char *_RESTRICT_KYWD s, 73 size_t n, mbstate_t *_RESTRICT_KYWD unused __unused, boolean_t zero) 74 { 75 if (s == NULL) 76 /* Reset to initial shift state (no-op) */ 77 return (0); 78 if (n == 0) 79 /* Incomplete multibyte sequence */ 80 return ((size_t)-2); 81 if (pwc != NULL) 82 *pwc = (unsigned char)*s; 83 if (zero || *s != '\0') { 84 return (1); 85 } else { 86 return (0); 87 } 88 } 89 90 size_t 91 __wcrtomb_ascii(char *_RESTRICT_KYWD s, wchar_t wc, 92 mbstate_t *_RESTRICT_KYWD unused __unused) 93 { 94 if (s == NULL) 95 /* Reset to initial shift state (no-op) */ 96 return (1); 97 if (wc < 0 || wc > UCHAR_MAX) { 98 errno = EILSEQ; 99 return ((size_t)-1); 100 } 101 *s = (unsigned char)wc; 102 return (1); 103 } 104 105 size_t 106 __mbsnrtowcs_ascii(wchar_t *_RESTRICT_KYWD dst, const char **_RESTRICT_KYWD src, 107 size_t nms, size_t len, mbstate_t *_RESTRICT_KYWD unused __unused) 108 { 109 const char *s; 110 size_t nchr; 111 112 if (dst == NULL) { 113 s = memchr(*src, '\0', nms); 114 return (s != NULL ? s - *src : nms); 115 } 116 117 s = *src; 118 nchr = 0; 119 while (len-- > 0 && nms-- > 0) { 120 if ((*dst++ = (unsigned char)*s++) == L'\0') { 121 *src = NULL; 122 return (nchr); 123 } 124 nchr++; 125 } 126 *src = s; 127 return (nchr); 128 } 129 130 size_t 131 __wcsnrtombs_ascii(char *_RESTRICT_KYWD dst, const wchar_t **_RESTRICT_KYWD src, 132 size_t nwc, size_t len, mbstate_t *_RESTRICT_KYWD unused __unused) 133 { 134 const wchar_t *s; 135 size_t nchr; 136 137 if (dst == NULL) { 138 for (s = *src; nwc > 0 && *s != L'\0'; s++, nwc--) { 139 if (*s < 0 || *s > UCHAR_MAX) { 140 errno = EILSEQ; 141 return ((size_t)-1); 142 } 143 } 144 return (s - *src); 145 } 146 147 s = *src; 148 nchr = 0; 149 while (len-- > 0 && nwc-- > 0) { 150 if (*s < 0 || *s > UCHAR_MAX) { 151 errno = EILSEQ; 152 return ((size_t)-1); 153 } 154 if ((*dst++ = *s++) == '\0') { 155 *src = NULL; 156 return (nchr); 157 } 158 nchr++; 159 } 160 *src = s; 161 return (nchr); 162 } 163