1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 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 * 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 #include <stdlib.h> 38 #include <string.h> 39 #include <errno.h> 40 #include <wchar.h> 41 #include "collate.h" 42 43 size_t 44 strxfrm_l(char * __restrict dest, const char * __restrict src, size_t len, locale_t loc); 45 size_t 46 strxfrm(char * __restrict dest, const char * __restrict src, size_t len) 47 { 48 return strxfrm_l(dest, src, len, __get_locale()); 49 } 50 51 size_t 52 strxfrm_l(char * __restrict dest, const char * __restrict src, size_t len, locale_t locale) 53 { 54 size_t slen; 55 size_t xlen; 56 wchar_t *wcs = NULL; 57 58 FIX_LOCALE(locale); 59 struct xlocale_collate *table = 60 (struct xlocale_collate*)locale->components[XLC_COLLATE]; 61 62 if (!*src) { 63 if (len > 0) 64 *dest = '\0'; 65 return (0); 66 } 67 68 /* 69 * The conversion from multibyte to wide character strings is 70 * strictly reducing (one byte of an mbs cannot expand to more 71 * than one wide character.) 72 */ 73 slen = strlen(src); 74 75 if (table->__collate_load_error) 76 goto error; 77 78 if ((wcs = malloc((slen + 1) * sizeof (wchar_t))) == NULL) 79 goto error; 80 81 if (mbstowcs_l(wcs, src, slen + 1, locale) == (size_t)-1) 82 goto error; 83 84 if ((xlen = _collate_sxfrm(table, wcs, dest, len)) == (size_t)-1) 85 goto error; 86 87 free(wcs); 88 89 if (len > xlen) { 90 dest[xlen] = 0; 91 } else if (len) { 92 dest[len-1] = 0; 93 } 94 95 return (xlen); 96 97 error: 98 /* errno should be set to ENOMEM if malloc failed */ 99 free(wcs); 100 strlcpy(dest, src, len); 101 102 return (slen); 103 } 104