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
mbsnrtowcs_l(wchar_t * _RESTRICT_KYWD dst,const char ** _RESTRICT_KYWD src,size_t nms,size_t len,mbstate_t * _RESTRICT_KYWD ps,locale_t loc)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
mbsnrtowcs(wchar_t * _RESTRICT_KYWD dst,const char ** _RESTRICT_KYWD src,size_t nms,size_t len,mbstate_t * _RESTRICT_KYWD ps)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
__mbsnrtowcs_std(wchar_t * _RESTRICT_KYWD dst,const char ** _RESTRICT_KYWD src,size_t nms,size_t len,mbstate_t * _RESTRICT_KYWD ps,mbrtowc_pfn_t pmbrtowc)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)) == (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