104 lines
3.0 KiB
C
104 lines
3.0 KiB
C
/*-
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* Copyright 2010 Nexenta Systems, Inc. All rights reserved.
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* Copyright (c) 1995 Alex Tatmanjants <alex@elvisti.kiev.ua>
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* at Electronni Visti IA, Kiev, Ukraine.
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* All rights reserved.
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*
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* Copyright (c) 2011 The FreeBSD Foundation
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* All rights reserved.
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* Portions of this software were developed by David Chisnall
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* under sponsorship from the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <wchar.h>
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#include "collate.h"
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size_t
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strxfrm_l(char * __restrict dest, const char * __restrict src, size_t len, locale_t loc);
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size_t
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strxfrm(char * __restrict dest, const char * __restrict src, size_t len)
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{
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return strxfrm_l(dest, src, len, __get_locale());
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}
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size_t
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strxfrm_l(char * __restrict dest, const char * __restrict src, size_t len, locale_t locale)
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{
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size_t slen;
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size_t xlen;
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wchar_t *wcs = NULL;
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FIX_LOCALE(locale);
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struct xlocale_collate *table =
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(struct xlocale_collate*)locale->components[XLC_COLLATE];
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if (!*src) {
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if (len > 0)
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*dest = '\0';
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return (0);
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}
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/*
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* The conversion from multibyte to wide character strings is
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* strictly reducing (one byte of an mbs cannot expand to more
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* than one wide character.)
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*/
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slen = strlen(src);
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if (table->__collate_load_error)
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goto error;
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if ((wcs = malloc((slen + 1) * sizeof (wchar_t))) == NULL)
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goto error;
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if (mbstowcs_l(wcs, src, slen + 1, locale) == (size_t)-1)
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goto error;
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if ((xlen = _collate_sxfrm(table, wcs, dest, len)) == (size_t)-1)
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goto error;
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free(wcs);
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if (len > xlen) {
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dest[xlen] = 0;
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} else if (len) {
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dest[len-1] = 0;
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}
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return (xlen);
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error:
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/* errno should be set to ENOMEM if malloc failed */
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free(wcs);
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strlcpy(dest, src, len);
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return (slen);
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}
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