1/*- 2 * Copyright (c) 2002-2004 Tim J. Robbins. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h>
|
28__FBSDID("$FreeBSD: head/lib/libc/locale/wcsrtombs.c 129179 2004-05-13 11:20:27Z tjr $");
|
28__FBSDID("$FreeBSD: head/lib/libc/locale/wcsrtombs.c 132497 2004-07-21 10:54:57Z tjr $"); |
29 30#include <limits.h> 31#include <stdlib.h> 32#include <string.h> 33#include <wchar.h> 34#include "mblocal.h" 35 36size_t 37wcsrtombs(char * __restrict dst, const wchar_t ** __restrict src, size_t len, 38 mbstate_t * __restrict ps) 39{ 40 static mbstate_t mbs; 41 42 if (ps == NULL) 43 ps = &mbs;
|
44 return (__wcsrtombs(dst, src, len, ps));
|
44 return (__wcsnrtombs(dst, src, SIZE_T_MAX, len, ps)); |
45}
|
46
47size_t
48__wcsrtombs_std(char * __restrict dst, const wchar_t ** __restrict src,
49 size_t len, mbstate_t * __restrict ps)
50{
51 mbstate_t mbsbak;
52 char buf[MB_LEN_MAX];
53 const wchar_t *s;
54 size_t nbytes;
55 int nb;
56
57 s = *src;
58 nbytes = 0;
59
60 if (dst == NULL) {
61 for (;;) {
62 if ((nb = (int)__wcrtomb(buf, *s, ps)) < 0)
63 /* Invalid character - wcrtomb() sets errno. */
64 return ((size_t)-1);
65 else if (*s == L'\0')
66 return (nbytes + nb - 1);
67 s++;
68 nbytes += nb;
69 }
70 /*NOTREACHED*/
71 }
72
73 while (len > 0) {
74 if (len > (size_t)MB_CUR_MAX) {
75 /* Enough space to translate in-place. */
76 if ((nb = (int)__wcrtomb(dst, *s, ps)) < 0) {
77 *src = s;
78 return ((size_t)-1);
79 }
80 } else {
81 /*
82 * May not be enough space; use temp. buffer.
83 *
84 * We need to save a copy of the conversion state
85 * here so we can restore it if the multibyte
86 * character is too long for the buffer.
87 */
88 mbsbak = *ps;
89 if ((nb = (int)__wcrtomb(buf, *s, ps)) < 0) {
90 *src = s;
91 return ((size_t)-1);
92 }
93 if (nb > (int)len) {
94 /* MB sequence for character won't fit. */
95 *ps = mbsbak;
96 break;
97 }
98 memcpy(dst, buf, nb);
99 }
100 if (*s == L'\0') {
101 *src = NULL;
102 return (nbytes + nb - 1);
103 }
104 s++;
105 dst += nb;
106 len -= nb;
107 nbytes += nb;
108 }
109 *src = s;
110 return (nbytes);
111}
|
|