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 <wchar.h>
40#include "collate.h"
41
42size_t
43wcsxfrm_l(wchar_t * __restrict dest, const wchar_t * __restrict src, size_t len, locale_t locale)
44{
45	size_t slen;
46	FIX_LOCALE(locale);
47	struct xlocale_collate *table =
48		(struct xlocale_collate*)locale->components[XLC_COLLATE];
49
50	if (*src == L'\0') {
51		if (len != 0)
52			*dest = L'\0';
53		return (0);
54	}
55
56	if ((table->__collate_load_error) ||
57	    ((slen = _collate_wxfrm(table, src, dest, len)) == (size_t)-1)) {
58		goto error;
59	}
60
61	/* Add null termination at the correct location. */
62	if (len > slen) {
63		dest[slen] = 0;
64	} else if (len) {
65		dest[len-1] = 0;
66	}
67
68	return (slen);
69
70error:
71	slen = wcslen(src);
72	if (slen < len)
73		(void) wcscpy(dest, src);
74	else {
75		(void) wcsncpy(dest, src, len - 1);
76		dest[len - 1] = L'\0';
77	}
78	return (slen);
79}
80
81size_t
82wcsxfrm(wchar_t * __restrict dest, const wchar_t * __restrict src, size_t len)
83{
84	return wcsxfrm_l(dest, src, len, __get_locale());
85}
86