xref: /illumos-gate/usr/src/cmd/tr/cset.h (revision b30d193948be5a7794d7ae3ba0ed9c2f72c88e0f)
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 
27 #ifndef CSET_H
28 #define	CSET_H
29 
30 #include <stdbool.h>
31 #include <wchar.h>
32 #include <wctype.h>
33 
34 struct csnode {
35 	wchar_t		csn_min;
36 	wchar_t		csn_max;
37 	struct csnode	*csn_left;
38 	struct csnode	*csn_right;
39 };
40 
41 struct csclass {
42 	wctype_t	csc_type;
43 	bool		csc_invert;
44 	struct csclass	*csc_next;
45 };
46 
47 struct cset {
48 #define	CS_CACHE_SIZE	256
49 	bool		cs_cache[CS_CACHE_SIZE];
50 	bool		cs_havecache;
51 	struct csclass	*cs_classes;
52 	struct csnode	*cs_root;
53 	bool		cs_invert;
54 };
55 
56 bool			cset_addclass(struct cset *, wctype_t, bool);
57 struct cset 		*cset_alloc(void);
58 bool 			cset_add(struct cset *, wchar_t);
59 void			cset_invert(struct cset *);
60 bool			cset_in_hard(struct cset *, wchar_t);
61 void			cset_cache(struct cset *);
62 
63 #endif	/* CSET_H */
64