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 <stdlib.h> 35 #include <string.h> 36 #include <errno.h> 37 #include <wchar.h> 38 #include "collate.h" 39 40 size_t 41 strxfrm_l(char * __restrict dest, const char * __restrict src, size_t len, locale_t loc); 42 size_t 43 strxfrm(char * __restrict dest, const char * __restrict src, size_t len) 44 { 45 return strxfrm_l(dest, src, len, __get_locale()); 46 } 47 48 size_t 49 strxfrm_l(char * __restrict dest, const char * __restrict src, size_t len, locale_t locale) 50 { 51 size_t slen; 52 size_t xlen; 53 wchar_t *wcs = NULL; 54 55 FIX_LOCALE(locale); 56 struct xlocale_collate *table = 57 (struct xlocale_collate*)locale->components[XLC_COLLATE]; 58 59 if (!*src) { 60 if (len > 0) 61 *dest = '\0'; 62 return (0); 63 } 64 65 /* 66 * The conversion from multibyte to wide character strings is 67 * strictly reducing (one byte of an mbs cannot expand to more 68 * than one wide character.) 69 */ 70 slen = strlen(src); 71 72 if (table->__collate_load_error) 73 goto error; 74 75 if ((wcs = malloc((slen + 1) * sizeof (wchar_t))) == NULL) 76 goto error; 77 78 if (mbstowcs_l(wcs, src, slen + 1, locale) == (size_t)-1) 79 goto error; 80 81 if ((xlen = _collate_sxfrm(table, wcs, dest, len)) == (size_t)-1) 82 goto error; 83 84 if (wcs) 85 free(wcs); 86 87 if (len > xlen) { 88 dest[xlen] = 0; 89 } else if (len) { 90 dest[len-1] = 0; 91 } 92 93 return (xlen); 94 95 error: 96 /* errno should be set to ENOMEM if malloc failed */ 97 if (wcs) 98 free(wcs); 99 (void) strlcpy(dest, src, len); 100 101 return (slen); 102 } 103