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 *
6 * Copyright (c) 2011 The FreeBSD Foundation
7 * All rights reserved.
8 * Portions of this software were developed by David Chisnall
9 * under sponsorship from the FreeBSD Foundation.
10 * All rights reserved.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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 #include <errno.h>
35 #include <limits.h>
36 #include <stdlib.h>
37 #include <wchar.h>
38 #include "mblocal.h"
39
40 size_t
mbsnrtowcs_l(wchar_t * __restrict dst,const char ** __restrict src,size_t nms,size_t len,mbstate_t * __restrict ps,locale_t locale)41 mbsnrtowcs_l(wchar_t * __restrict dst, const char ** __restrict src,
42 size_t nms, size_t len, mbstate_t * __restrict ps, locale_t locale)
43 {
44 FIX_LOCALE(locale);
45 if (ps == NULL)
46 ps = &locale->mbsnrtowcs;
47 return (XLOCALE_CTYPE(locale)->__mbsnrtowcs(dst, src, nms, len, ps));
48 }
49 size_t
mbsnrtowcs(wchar_t * __restrict dst,const char ** __restrict src,size_t nms,size_t len,mbstate_t * __restrict ps)50 mbsnrtowcs(wchar_t * __restrict dst, const char ** __restrict src,
51 size_t nms, size_t len, mbstate_t * __restrict ps)
52 {
53 return mbsnrtowcs_l(dst, src, nms, len, ps, __get_locale());
54 }
55
56 size_t
__mbsnrtowcs_std(wchar_t * __restrict dst,const char ** __restrict src,size_t nms,size_t len,mbstate_t * __restrict ps,mbrtowc_pfn_t pmbrtowc)57 __mbsnrtowcs_std(wchar_t * __restrict dst, const char ** __restrict src,
58 size_t nms, size_t len, mbstate_t * __restrict 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)) == (size_t)-1)
72 /* Invalid sequence - mbrtowc() sets errno. */
73 return ((size_t)-1);
74 else if (nb == 0 || nb == (size_t)-2)
75 return (nchr);
76 s += nb;
77 nms -= nb;
78 nchr++;
79 }
80 /*NOTREACHED*/
81 }
82
83 while (len-- > 0) {
84 if ((nb = pmbrtowc(dst, s, nms, ps)) == (size_t)-1) {
85 *src = s;
86 return ((size_t)-1);
87 } else if (nb == (size_t)-2) {
88 *src = s + nms;
89 return (nchr);
90 } else if (nb == 0) {
91 *src = NULL;
92 return (nchr);
93 }
94 s += nb;
95 nms -= nb;
96 nchr++;
97 dst++;
98 }
99 *src = s;
100 return (nchr);
101 }
102