1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2004 Tim J. Robbins. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #ifndef CSET_H 32 #define CSET_H 33 34 #include <stdbool.h> 35 #include <wchar.h> 36 #include <wctype.h> 37 38 struct csnode { 39 wchar_t csn_min; 40 wchar_t csn_max; 41 struct csnode *csn_left; 42 struct csnode *csn_right; 43 }; 44 45 struct csclass { 46 wctype_t csc_type; 47 bool csc_invert; 48 struct csclass *csc_next; 49 }; 50 51 struct cset { 52 #define CS_CACHE_SIZE 256 53 bool cs_cache[CS_CACHE_SIZE]; 54 bool cs_havecache; 55 struct csclass *cs_classes; 56 struct csnode *cs_root; 57 bool cs_invert; 58 }; 59 60 bool cset_addclass(struct cset *, wctype_t, bool); 61 struct cset * cset_alloc(void); 62 bool cset_add(struct cset *, wchar_t); 63 void cset_invert(struct cset *); 64 bool cset_in_hard(struct cset *, wchar_t); 65 void cset_cache(struct cset *); 66 67 static __inline bool 68 cset_in(struct cset *cs, wchar_t ch) 69 { 70 71 if (ch < CS_CACHE_SIZE && cs->cs_havecache) 72 return (cs->cs_cache[ch]); 73 return (cset_in_hard(cs, ch)); 74 } 75 76 #endif /* CSET_H */ 77