1104443Stjr/*- 2104443Stjr * Copyright (c) 1995 Alex Tatmanjants <alex@elvisti.kiev.ua> 3104443Stjr * at Electronni Visti IA, Kiev, Ukraine. 4104443Stjr * All rights reserved. 5104443Stjr * 6227753Stheraven * Copyright (c) 2011 The FreeBSD Foundation 7227753Stheraven * All rights reserved. 8227753Stheraven * Portions of this software were developed by David Chisnall 9227753Stheraven * under sponsorship from the FreeBSD Foundation. 10227753Stheraven * 11104443Stjr * Redistribution and use in source and binary forms, with or without 12104443Stjr * modification, are permitted provided that the following conditions 13104443Stjr * are met: 14104443Stjr * 1. Redistributions of source code must retain the above copyright 15104443Stjr * notice, this list of conditions and the following disclaimer. 16104443Stjr * 2. Redistributions in binary form must reproduce the above copyright 17104443Stjr * notice, this list of conditions and the following disclaimer in the 18104443Stjr * documentation and/or other materials provided with the distribution. 19104443Stjr * 20104443Stjr * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND 21104443Stjr * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22104443Stjr * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23104443Stjr * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE 24104443Stjr * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25104443Stjr * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26104443Stjr * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27104443Stjr * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28104443Stjr * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29104443Stjr * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30104443Stjr * SUCH DAMAGE. 31104443Stjr */ 32104443Stjr 33104443Stjr#include <sys/cdefs.h> 34104443Stjr#if 0 35104443Stjr__FBSDID("FreeBSD: src/lib/libc/string/strxfrm.c,v 1.15 2002/09/06 11:24:06 tjr Exp "); 36104443Stjr#endif 37104443Stjr__FBSDID("$FreeBSD$"); 38104443Stjr 39104443Stjr#include <stdlib.h> 40104443Stjr#include <string.h> 41104443Stjr#include <wchar.h> 42104443Stjr#include "collate.h" 43104443Stjr 44104443Stjrstatic char *__mbsdup(const wchar_t *); 45104443Stjr 46104443Stjr/* 47104443Stjr * Placeholder wcsxfrm() implementation. See wcscoll.c for a description of 48104443Stjr * the logic used. 49104443Stjr */ 50104443Stjrsize_t 51227753Stheravenwcsxfrm_l(wchar_t * __restrict dest, const wchar_t * __restrict src, size_t len, locale_t locale) 52104443Stjr{ 53104443Stjr int prim, sec, l; 54104443Stjr size_t slen; 55104443Stjr char *mbsrc, *s, *ss; 56227753Stheraven FIX_LOCALE(locale); 57227753Stheraven struct xlocale_collate *table = 58227753Stheraven (struct xlocale_collate*)locale->components[XLC_COLLATE]; 59104443Stjr 60104443Stjr if (*src == L'\0') { 61104443Stjr if (len != 0) 62104443Stjr *dest = L'\0'; 63104443Stjr return (0); 64104443Stjr } 65104443Stjr 66227753Stheraven if (table->__collate_load_error || MB_CUR_MAX > 1) { 67104443Stjr slen = wcslen(src); 68104443Stjr if (len > 0) { 69104443Stjr if (slen < len) 70104443Stjr wcscpy(dest, src); 71104443Stjr else { 72104443Stjr wcsncpy(dest, src, len - 1); 73104443Stjr dest[len - 1] = L'\0'; 74104443Stjr } 75104443Stjr } 76104443Stjr return (slen); 77104443Stjr } 78104443Stjr 79104443Stjr mbsrc = __mbsdup(src); 80104443Stjr slen = 0; 81104443Stjr prim = sec = 0; 82227753Stheraven ss = s = __collate_substitute(table, mbsrc); 83104443Stjr while (*s != '\0') { 84104443Stjr while (*s != '\0' && prim == 0) { 85227753Stheraven __collate_lookup(table, s, &l, &prim, &sec); 86104443Stjr s += l; 87104443Stjr } 88104443Stjr if (prim != 0) { 89104443Stjr if (len > 1) { 90104443Stjr *dest++ = (wchar_t)prim; 91104443Stjr len--; 92104443Stjr } 93104443Stjr slen++; 94104443Stjr prim = 0; 95104443Stjr } 96104443Stjr } 97104443Stjr free(ss); 98104443Stjr free(mbsrc); 99104443Stjr if (len != 0) 100104443Stjr *dest = L'\0'; 101104443Stjr 102104443Stjr return (slen); 103104443Stjr} 104227753Stheravensize_t 105227753Stheravenwcsxfrm(wchar_t * __restrict dest, const wchar_t * __restrict src, size_t len) 106227753Stheraven{ 107227753Stheraven return wcsxfrm_l(dest, src, len, __get_locale()); 108227753Stheraven} 109104443Stjr 110104443Stjrstatic char * 111104443Stjr__mbsdup(const wchar_t *ws) 112104443Stjr{ 113127998Stjr static const mbstate_t initial; 114127998Stjr mbstate_t st; 115104443Stjr const wchar_t *wcp; 116104443Stjr size_t len; 117104443Stjr char *mbs; 118104443Stjr 119104443Stjr wcp = ws; 120127998Stjr st = initial; 121127998Stjr if ((len = wcsrtombs(NULL, &wcp, 0, &st)) == (size_t)-1) 122104443Stjr return (NULL); 123104443Stjr if ((mbs = malloc(len + 1)) == NULL) 124104443Stjr return (NULL); 125127998Stjr st = initial; 126127998Stjr wcsrtombs(mbs, &ws, len + 1, &st); 127104443Stjr 128104443Stjr return (mbs); 129104443Stjr} 130