1 /*-
2 * Copyright 2010 Nexenta Systems, Inc. All rights reserved.
3 * Copyright (c) 1995 Alex Tatmanjants <alex@elvisti.kiev.ua>
4 * at Electronni Visti IA, Kiev, Ukraine.
5 * All rights reserved.
6 *
7 * Copyright (c) 2011 The FreeBSD Foundation
8 * All rights reserved.
9 * Portions of this software were developed by David Chisnall
10 * under sponsorship from the FreeBSD Foundation.
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 ``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 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 <sys/cdefs.h>
35 __FBSDID("$FreeBSD$");
36
37 #include <stdlib.h>
38 #include <string.h>
39 #include <errno.h>
40 #include <wchar.h>
41 #include "collate.h"
42
43 size_t
44 strxfrm_l(char * __restrict dest, const char * __restrict src, size_t len, locale_t loc);
45 size_t
strxfrm(char * __restrict dest,const char * __restrict src,size_t len)46 strxfrm(char * __restrict dest, const char * __restrict src, size_t len)
47 {
48 return strxfrm_l(dest, src, len, __get_locale());
49 }
50
51 size_t
strxfrm_l(char * __restrict dest,const char * __restrict src,size_t len,locale_t locale)52 strxfrm_l(char * __restrict dest, const char * __restrict src, size_t len, locale_t locale)
53 {
54 size_t slen;
55 size_t xlen;
56 wchar_t *wcs = NULL;
57
58 FIX_LOCALE(locale);
59 struct xlocale_collate *table =
60 (struct xlocale_collate*)locale->components[XLC_COLLATE];
61
62 if (!*src) {
63 if (len > 0)
64 *dest = '\0';
65 return (0);
66 }
67
68 /*
69 * The conversion from multibyte to wide character strings is
70 * strictly reducing (one byte of an mbs cannot expand to more
71 * than one wide character.)
72 */
73 slen = strlen(src);
74
75 if (table->__collate_load_error)
76 goto error;
77
78 if ((wcs = malloc((slen + 1) * sizeof (wchar_t))) == NULL)
79 goto error;
80
81 if (mbstowcs_l(wcs, src, slen + 1, locale) == (size_t)-1)
82 goto error;
83
84 if ((xlen = _collate_sxfrm(table, wcs, dest, len)) == (size_t)-1)
85 goto error;
86
87 free(wcs);
88
89 if (len > xlen) {
90 dest[xlen] = 0;
91 } else if (len) {
92 dest[len-1] = 0;
93 }
94
95 return (xlen);
96
97 error:
98 /* errno should be set to ENOMEM if malloc failed */
99 free(wcs);
100 strlcpy(dest, src, len);
101
102 return (slen);
103 }
104