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      1 /*	$NetBSD: wcsxfrm.c,v 1.5 2013/05/17 12:55:57 joerg Exp $	*/
      2 
      3 /*-
      4  * Copyright (c)2003 Citrus Project,
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #include <sys/cdefs.h>
     30 #if defined(LIBC_SCCS) && !defined(lint)
     31 __RCSID("$NetBSD: wcsxfrm.c,v 1.5 2013/05/17 12:55:57 joerg Exp $");
     32 #endif /* LIBC_SCCS and not lint */
     33 
     34 #include "namespace.h"
     35 
     36 #include <assert.h>
     37 #include <wchar.h>
     38 #include <locale.h>
     39 #include "setlocale_local.h"
     40 
     41 /*
     42  * Compare strings with using collating information.
     43  */
     44 size_t
     45 wcsxfrm_l(wchar_t *s1, const wchar_t *s2, size_t n, locale_t loc)
     46 {
     47 	size_t len;
     48 
     49 	/* XXX: LC_COLLATE should be implemented. */
     50 	/* LINTED */(void)loc;
     51 
     52 	len = wcslen(s2);
     53 	if (len<n)
     54 		wcscpy(s1, s2);
     55 	else {
     56 		/*
     57 		 * SUSv3 says:
     58 		 *   If the value returned is n or more, the contents
     59 		 *   of the array pointed to by ws1 are unspecified.
     60 		 */
     61 		/* thus, do nothing */
     62 	}
     63 
     64 	return (len);
     65 }
     66 
     67 size_t
     68 wcsxfrm(wchar_t *s1, const wchar_t *s2, size_t n)
     69 {
     70 	return wcsxfrm_l(s1, s2, n, _current_locale());
     71 }
     72