1 /*- 2 * Copyright (c) 2002 Tim J. Robbins. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include <errno.h> 31 #include <string.h> 32 #include <wctype.h> 33 34 enum { 35 _WCT_ERROR = 0, 36 _WCT_TOLOWER = 1, 37 _WCT_TOUPPER = 2 38 }; 39 40 wint_t 41 towctrans(wint_t wc, wctrans_t desc) 42 { 43 44 switch (desc) { 45 case _WCT_TOLOWER: 46 wc = towlower(wc); 47 break; 48 case _WCT_TOUPPER: 49 wc = towupper(wc); 50 break; 51 case _WCT_ERROR: 52 default: 53 errno = EINVAL; 54 break; 55 } 56 57 return (wc); 58 } 59 60 wctrans_t 61 wctrans(const char *charclass) 62 { 63 struct { 64 const char *name; 65 wctrans_t trans; 66 } ccls[] = { 67 { "tolower", _WCT_TOLOWER }, 68 { "toupper", _WCT_TOUPPER }, 69 { NULL, _WCT_ERROR }, /* Default */ 70 }; 71 int i; 72 73 i = 0; 74 while (ccls[i].name != NULL && strcmp(ccls[i].name, charclass) != 0) 75 i++; 76 77 if (ccls[i].trans == _WCT_ERROR) 78 errno = EINVAL; 79 return (ccls[i].trans); 80 } 81