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: head/usr.bin/tr/cset.h 200462 2009-12-13 03:14:06Z delphij $ 27 */ 28 29 #ifndef CSET_H 30 #define CSET_H 31 32 #include <stdbool.h> 33 #include <wchar.h> 34 #include <wctype.h> 35 36 struct csnode { 37 wchar_t csn_min; 38 wchar_t csn_max; 39 struct csnode *csn_left; 40 struct csnode *csn_right; 41 }; 42 43 struct csclass { 44 wctype_t csc_type; 45 bool csc_invert; 46 struct csclass *csc_next; 47 }; 48 49 struct cset { 50 #define CS_CACHE_SIZE 256 51 bool cs_cache[CS_CACHE_SIZE]; 52 bool cs_havecache; 53 struct csclass *cs_classes; 54 struct csnode *cs_root; 55 bool cs_invert; 56 }; 57 58 bool cset_addclass(struct cset *, wctype_t, bool); 59 struct cset * cset_alloc(void); 60 bool cset_add(struct cset *, wchar_t); 61 void cset_invert(struct cset *); 62 bool cset_in_hard(struct cset *, wchar_t); 63 void cset_cache(struct cset *); 64 65 static __inline bool 66 cset_in(struct cset *cs, wchar_t ch) 67 { 68 69 if (ch < CS_CACHE_SIZE && cs->cs_havecache) 70 return (cs->cs_cache[ch]); 71 return (cset_in_hard(cs, ch)); 72 } 73 74 #endif /* CSET_H */ 75