1*fbc9049bSSascha Wildner /*-
2*fbc9049bSSascha Wildner * Copyright (c) 2004 Tim J. Robbins.
3*fbc9049bSSascha Wildner * All rights reserved.
4*fbc9049bSSascha Wildner *
5*fbc9049bSSascha Wildner * Redistribution and use in source and binary forms, with or without
6*fbc9049bSSascha Wildner * modification, are permitted provided that the following conditions
7*fbc9049bSSascha Wildner * are met:
8*fbc9049bSSascha Wildner * 1. Redistributions of source code must retain the above copyright
9*fbc9049bSSascha Wildner * notice, this list of conditions and the following disclaimer.
10*fbc9049bSSascha Wildner * 2. Redistributions in binary form must reproduce the above copyright
11*fbc9049bSSascha Wildner * notice, this list of conditions and the following disclaimer in the
12*fbc9049bSSascha Wildner * documentation and/or other materials provided with the distribution.
13*fbc9049bSSascha Wildner *
14*fbc9049bSSascha Wildner * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15*fbc9049bSSascha Wildner * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16*fbc9049bSSascha Wildner * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17*fbc9049bSSascha Wildner * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18*fbc9049bSSascha Wildner * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19*fbc9049bSSascha Wildner * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20*fbc9049bSSascha Wildner * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21*fbc9049bSSascha Wildner * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22*fbc9049bSSascha Wildner * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23*fbc9049bSSascha Wildner * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24*fbc9049bSSascha Wildner * SUCH DAMAGE.
25*fbc9049bSSascha Wildner *
26*fbc9049bSSascha Wildner * $FreeBSD: head/usr.bin/tr/cmap.h 200462 2009-12-13 03:14:06Z delphij $
27*fbc9049bSSascha Wildner */
28*fbc9049bSSascha Wildner
29*fbc9049bSSascha Wildner #ifndef CMAP_H
30*fbc9049bSSascha Wildner #define CMAP_H
31*fbc9049bSSascha Wildner
32*fbc9049bSSascha Wildner #include <limits.h>
33*fbc9049bSSascha Wildner #include <stdbool.h>
34*fbc9049bSSascha Wildner #include <wchar.h>
35*fbc9049bSSascha Wildner
36*fbc9049bSSascha Wildner struct cmapnode {
37*fbc9049bSSascha Wildner wint_t cmn_from;
38*fbc9049bSSascha Wildner wint_t cmn_to;
39*fbc9049bSSascha Wildner struct cmapnode *cmn_left;
40*fbc9049bSSascha Wildner struct cmapnode *cmn_right;
41*fbc9049bSSascha Wildner };
42*fbc9049bSSascha Wildner
43*fbc9049bSSascha Wildner struct cmap {
44*fbc9049bSSascha Wildner #define CM_CACHE_SIZE 128
45*fbc9049bSSascha Wildner wint_t cm_cache[CM_CACHE_SIZE];
46*fbc9049bSSascha Wildner bool cm_havecache;
47*fbc9049bSSascha Wildner struct cmapnode *cm_root;
48*fbc9049bSSascha Wildner #define CM_DEF_SELF -2
49*fbc9049bSSascha Wildner wint_t cm_def;
50*fbc9049bSSascha Wildner wint_t cm_min;
51*fbc9049bSSascha Wildner wint_t cm_max;
52*fbc9049bSSascha Wildner };
53*fbc9049bSSascha Wildner
54*fbc9049bSSascha Wildner struct cmap * cmap_alloc(void);
55*fbc9049bSSascha Wildner bool cmap_add(struct cmap *, wint_t, wint_t);
56*fbc9049bSSascha Wildner wint_t cmap_lookup_hard(struct cmap *, wint_t);
57*fbc9049bSSascha Wildner void cmap_cache(struct cmap *);
58*fbc9049bSSascha Wildner wint_t cmap_default(struct cmap *, wint_t);
59*fbc9049bSSascha Wildner
60*fbc9049bSSascha Wildner static __inline wint_t
cmap_lookup(struct cmap * cm,wint_t from)61*fbc9049bSSascha Wildner cmap_lookup(struct cmap *cm, wint_t from)
62*fbc9049bSSascha Wildner {
63*fbc9049bSSascha Wildner
64*fbc9049bSSascha Wildner if (from < CM_CACHE_SIZE && cm->cm_havecache)
65*fbc9049bSSascha Wildner return (cm->cm_cache[from]);
66*fbc9049bSSascha Wildner return (cmap_lookup_hard(cm, from));
67*fbc9049bSSascha Wildner }
68*fbc9049bSSascha Wildner
69*fbc9049bSSascha Wildner static __inline wint_t
cmap_min(struct cmap * cm)70*fbc9049bSSascha Wildner cmap_min(struct cmap *cm)
71*fbc9049bSSascha Wildner {
72*fbc9049bSSascha Wildner
73*fbc9049bSSascha Wildner return (cm->cm_min);
74*fbc9049bSSascha Wildner }
75*fbc9049bSSascha Wildner
76*fbc9049bSSascha Wildner static __inline wint_t
cmap_max(struct cmap * cm)77*fbc9049bSSascha Wildner cmap_max(struct cmap *cm)
78*fbc9049bSSascha Wildner {
79*fbc9049bSSascha Wildner
80*fbc9049bSSascha Wildner return (cm->cm_max);
81*fbc9049bSSascha Wildner }
82*fbc9049bSSascha Wildner
83*fbc9049bSSascha Wildner #endif
84