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