xref: /illumos-gate/usr/src/cmd/tr/cmap.h (revision 163bd69b3c164dda2a59c7f08ca788e7d6ba9bea)
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 CMAP_H
28 #define	CMAP_H
29 
30 #include <limits.h>
31 #include <stdbool.h>
32 #include <wchar.h>
33 
34 struct cmapnode {
35 	wint_t		cmn_from;
36 	wint_t		cmn_to;
37 	struct cmapnode	*cmn_left;
38 	struct cmapnode	*cmn_right;
39 };
40 
41 struct cmap {
42 #define	CM_CACHE_SIZE	128
43 	wint_t		cm_cache[CM_CACHE_SIZE];
44 	bool		cm_havecache;
45 	struct cmapnode	*cm_root;
46 #define	CM_DEF_SELF	-2
47 	wint_t		cm_def;
48 	wint_t		cm_min;
49 	wint_t		cm_max;
50 };
51 
52 struct cmap 	*cmap_alloc(void);
53 bool		cmap_add(struct cmap *, wint_t, wint_t);
54 wint_t		cmap_lookup_hard(struct cmap *, wint_t);
55 void		cmap_cache(struct cmap *);
56 wint_t		cmap_default(struct cmap *, wint_t);
57 
58 #endif
59