1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright 2010 Nexenta Systems, Inc. All rights reserved. 5 * Copyright (c) 1995 Alex Tatmanjants <alex@elvisti.kiev.ua> 6 * at Electronni Visti IA, Kiev, Ukraine. 7 * All rights reserved. 8 * 9 * Copyright (c) 2011 The FreeBSD Foundation 10 * All rights reserved. 11 * Portions of this software were developed by David Chisnall 12 * under sponsorship from the FreeBSD Foundation. 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions 16 * are met: 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 __FBSDID("$FreeBSD$"); 38 39 #include <stdlib.h> 40 #include <string.h> 41 #include <errno.h> 42 #include <wchar.h> 43 #include "collate.h" 44 45 size_t 46 strxfrm_l(char * __restrict dest, const char * __restrict src, size_t len, locale_t loc); 47 size_t 48 strxfrm(char * __restrict dest, const char * __restrict src, size_t len) 49 { 50 return strxfrm_l(dest, src, len, __get_locale()); 51 } 52 53 size_t 54 strxfrm_l(char * __restrict dest, const char * __restrict src, size_t len, locale_t locale) 55 { 56 size_t slen; 57 size_t xlen; 58 wchar_t *wcs = NULL; 59 60 FIX_LOCALE(locale); 61 struct xlocale_collate *table = 62 (struct xlocale_collate*)locale->components[XLC_COLLATE]; 63 64 if (!*src) { 65 if (len > 0) 66 *dest = '\0'; 67 return (0); 68 } 69 70 /* 71 * The conversion from multibyte to wide character strings is 72 * strictly reducing (one byte of an mbs cannot expand to more 73 * than one wide character.) 74 */ 75 slen = strlen(src); 76 77 if (table->__collate_load_error) 78 goto error; 79 80 if ((wcs = malloc((slen + 1) * sizeof (wchar_t))) == NULL) 81 goto error; 82 83 if (mbstowcs_l(wcs, src, slen + 1, locale) == (size_t)-1) 84 goto error; 85 86 if ((xlen = _collate_sxfrm(table, wcs, dest, len)) == (size_t)-1) 87 goto error; 88 89 free(wcs); 90 91 if (len > xlen) { 92 dest[xlen] = 0; 93 } else if (len) { 94 dest[len-1] = 0; 95 } 96 97 return (xlen); 98 99 error: 100 /* errno should be set to ENOMEM if malloc failed */ 101 free(wcs); 102 strlcpy(dest, src, len); 103 104 return (slen); 105 } 106