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 <stdlib.h>
35 #include <string.h>
36 #include <errno.h>
37 #include <wchar.h>
38 #include "collate.h"
39
40 size_t
strxfrm(char * __restrict dest,const char * __restrict src,size_t len)41 strxfrm(char * __restrict dest, const char * __restrict src, size_t len)
42 {
43 return strxfrm_l(dest, src, len, __get_locale());
44 }
45
46 size_t
strxfrm_l(char * __restrict dest,const char * __restrict src,size_t len,locale_t locale)47 strxfrm_l(char * __restrict dest, const char * __restrict src, size_t len,
48 locale_t locale)
49 {
50 size_t slen;
51 size_t xlen;
52 wchar_t *wcs = NULL;
53
54 FIX_LOCALE(locale);
55 struct xlocale_collate *table =
56 (struct xlocale_collate*)locale->components[XLC_COLLATE];
57
58 if (!*src) {
59 if (len > 0)
60 *dest = '\0';
61 return (0);
62 }
63
64 /*
65 * The conversion from multibyte to wide character strings is
66 * strictly reducing (one byte of an mbs cannot expand to more
67 * than one wide character.)
68 */
69 slen = strlen(src);
70
71 if (table->__collate_load_error)
72 goto error;
73
74 if ((wcs = malloc((slen + 1) * sizeof (wchar_t))) == NULL)
75 goto error;
76
77 if (mbstowcs_l(wcs, src, slen + 1, locale) == (size_t)-1)
78 goto error;
79
80 if ((xlen = _collate_sxfrm(table, wcs, dest, len)) == (size_t)-1)
81 goto error;
82
83 if (wcs)
84 free(wcs);
85
86 if (len > xlen) {
87 dest[xlen] = 0;
88 } else if (len) {
89 dest[len-1] = 0;
90 }
91
92 return (xlen);
93
94 error:
95 /* errno should be set to ENOMEM if malloc failed */
96 if (wcs)
97 free(wcs);
98 (void) strlcpy(dest, src, len);
99
100 return (slen);
101 }
102