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. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include "lint.h" 30 #include <errno.h> 31 #include <limits.h> 32 #include <stdlib.h> 33 #include <wchar.h> 34 #include "mblocal.h" 35 #include "localeimpl.h" 36 #include "lctype.h" 37 38 size_t 39 mbsnrtowcs_l(wchar_t *_RESTRICT_KYWD dst, const char **_RESTRICT_KYWD src, 40 size_t nms, size_t len, mbstate_t *_RESTRICT_KYWD ps, locale_t loc) 41 { 42 static mbstate_t mbs; 43 44 if (ps == NULL) 45 ps = &mbs; 46 return (loc->ctype->lc_mbsnrtowcs(dst, src, nms, len, ps)); 47 } 48 49 size_t 50 mbsnrtowcs(wchar_t *_RESTRICT_KYWD dst, const char **_RESTRICT_KYWD src, 51 size_t nms, size_t len, mbstate_t *_RESTRICT_KYWD ps) 52 { 53 return (mbsnrtowcs_l(dst, src, nms, len, ps, uselocale(NULL))); 54 } 55 56 size_t 57 __mbsnrtowcs_std(wchar_t *_RESTRICT_KYWD dst, const char **_RESTRICT_KYWD src, 58 size_t nms, size_t len, mbstate_t *_RESTRICT_KYWD ps, 59 mbrtowc_pfn_t pmbrtowc) 60 { 61 const char *s; 62 size_t nchr; 63 wchar_t wc; 64 size_t nb; 65 66 s = *src; 67 nchr = 0; 68 69 if (dst == NULL) { 70 for (;;) { 71 if ((nb = pmbrtowc(&wc, s, nms, ps, B_FALSE)) == 72 (size_t)-1) { 73 /* Invalid sequence - mbrtowc() sets errno. */ 74 return ((size_t)-1); 75 } else if (nb == 0 || nb == (size_t)-2) { 76 return (nchr); 77 } 78 s += nb; 79 nms -= nb; 80 nchr++; 81 } 82 /*NOTREACHED*/ 83 } 84 85 while (len-- > 0) { 86 if ((nb = pmbrtowc(dst, s, nms, ps, B_FALSE)) == (size_t)-1) { 87 *src = s; 88 return ((size_t)-1); 89 } else if (nb == (size_t)-2) { 90 *src = s + nms; 91 return (nchr); 92 } else if (nb == 0) { 93 *src = NULL; 94 return (nchr); 95 } 96 s += nb; 97 nms -= nb; 98 nchr++; 99 dst++; 100 } 101 *src = s; 102 return (nchr); 103 } 104