1 /*-
2 * Copyright (c) 1995 Alex Tatmanjants <alex@elvisti.kiev.ua>
3 * at Electronni Visti IA, Kiev, Ukraine.
4 * All rights reserved.
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 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
35
36 #include <stdlib.h>
37 #include <string.h>
38 #include "collate.h"
39
40 size_t
41 strxfrm_l(char * __restrict dest, const char * __restrict src, size_t len, locale_t loc);
42 size_t
strxfrm(char * __restrict dest,const char * __restrict src,size_t len)43 strxfrm(char * __restrict dest, const char * __restrict src, size_t len)
44 {
45 return strxfrm_l(dest, src, len, __get_locale());
46 }
47
48 size_t
strxfrm_l(char * __restrict dest,const char * __restrict src,size_t len,locale_t locale)49 strxfrm_l(char * __restrict dest, const char * __restrict src, size_t len, locale_t locale)
50 {
51 int prim, sec, l;
52 size_t slen;
53 char *s, *ss;
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 if (table->__collate_load_error)
65 return strlcpy(dest, src, len);
66
67 slen = 0;
68 prim = sec = 0;
69 ss = s = __collate_substitute(table, src);
70 while (*s) {
71 while (*s && !prim) {
72 __collate_lookup(table, s, &l, &prim, &sec);
73 s += l;
74 }
75 if (prim) {
76 if (len > 1) {
77 *dest++ = (char)prim;
78 len--;
79 }
80 slen++;
81 prim = 0;
82 }
83 }
84 free(ss);
85 if (len > 0)
86 *dest = '\0';
87
88 return slen;
89 }
90