Add nsswitch support.
[dragonfly.git] / lib / libc / string / strxfrm.c
CommitLineData
984263bc
MD
1/*-
2 * Copyright (c) 1995 Alex Tatmanjants <alex@elvisti.kiev.ua>
3 * at Electronni Visti IA, Kiev, Ukraine.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
1de703da
MD
26 *
27 * $FreeBSD: src/lib/libc/string/strxfrm.c,v 1.11.2.1 2001/07/09 23:30:07 obrien Exp $
bd4c62e8 28 * $DragonFly: src/lib/libc/string/strxfrm.c,v 1.3 2005/09/18 16:32:34 asmodai Exp $
984263bc
MD
29 */
30
984263bc
MD
31#include <stdlib.h>
32#include <string.h>
33#include "collate.h"
34
35size_t
bd4c62e8 36strxfrm(char *dest, const char *src, size_t len)
984263bc
MD
37{
38 int prim, sec, l;
39 size_t slen;
40 char *s, *ss;
41
42 if (!*src) {
43 if (len > 0)
44 *dest = '\0';
45 return 0;
46 }
47
48 if (__collate_load_error) {
49 slen = strlen(src);
50 if (len > 0) {
51 if (slen < len)
52 strcpy(dest, src);
53 else {
54 strncpy(dest, src, len - 1);
55 dest[len - 1] = '\0';
56 }
57 }
58 return slen;
59 }
60
61 slen = 0;
62 prim = sec = 0;
63 ss = s = __collate_substitute(src);
64 while (*s) {
65 while (*s && !prim) {
66 __collate_lookup(s, &l, &prim, &sec);
67 s += l;
68 }
69 if (prim) {
70 if (len > 1) {
71 *dest++ = (char)prim;
72 len--;
73 }
74 slen++;
75 prim = 0;
76 }
77 }
78 free(ss);
79 if (len > 0)
80 *dest = '\0';
81
82 return slen;
83}