1 /*- 2 * Copyright (c) 2004 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 * $FreeBSD$ 27 */ 28 29 #ifndef CSET_H 30 #define CSET_H 31 32 #include <stdbool.h> 33 #include <wctype.h> 34 35 struct csnode { 36 wchar_t csn_min; 37 wchar_t csn_max; 38 struct csnode *csn_left; 39 struct csnode *csn_right; 40 }; 41 42 struct csclass { 43 wctype_t csc_type; 44 bool csc_invert; 45 struct csclass *csc_next; 46 }; 47 48 struct cset { 49 #define CS_CACHE_SIZE 256 50 bool cs_cache[CS_CACHE_SIZE]; 51 bool cs_havecache; 52 struct csclass *cs_classes; 53 struct csnode *cs_root; 54 bool cs_invert; 55 }; 56 57 bool cset_addclass(struct cset *, wctype_t, bool); 58 struct cset * cset_alloc(void); 59 bool cset_add(struct cset *, wchar_t); 60 void cset_invert(struct cset *); 61 bool cset_in_hard(struct cset *, wchar_t); 62 void cset_cache(struct cset *); 63 64 static __inline bool 65 cset_in(struct cset *cs, wchar_t ch) 66 { 67 68 if (ch < CS_CACHE_SIZE && cs->cs_havecache) 69 return (cs->cs_cache[ch]); 70 return (cset_in_hard(cs, ch)); 71 } 72 73 #endif /* CSET_H */ 74