1 /*- 2 * Copyright (c) 1995 Alex Tatmanjants <alex@elvisti.kiev.ua> 3 * at Electronni Visti IA, Kiev, Ukraine. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD: src/lib/libc/string/strxfrm.c,v 1.17 2008/10/19 09:10:44 delphij Exp $ 28 * $DragonFly: src/lib/libc/string/strxfrm.c,v 1.3 2005/09/18 16:32:34 asmodai Exp $ 29 */ 30 31 #include <stdlib.h> 32 #include <string.h> 33 #include "collate.h" 34 35 size_t 36 strxfrm(char * __restrict dest, const char * __restrict src, size_t len) 37 { 38 int prim, sec, l; 39 size_t slen; 40 char *s, *ss; 41 42 if (!*src) { 43 if (len > 0) 44 *dest = '\0'; 45 return 0; 46 } 47 48 if (__collate_load_error) 49 return strlcpy(dest, src, len); 50 51 slen = 0; 52 prim = sec = 0; 53 ss = s = __collate_substitute(src); 54 while (*s) { 55 while (*s && !prim) { 56 __collate_lookup(s, &l, &prim, &sec); 57 s += l; 58 } 59 if (prim) { 60 if (len > 1) { 61 *dest++ = (char)prim; 62 len--; 63 } 64 slen++; 65 prim = 0; 66 } 67 } 68 free(ss); 69 if (len > 0) 70 *dest = '\0'; 71 72 return slen; 73 } 74