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/*-
* Copyright (c) 2004 Tim J. Robbins.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef CMAP_H
#define CMAP_H
#include <limits.h>
#include <stdbool.h>
#include <wchar.h>
struct cmapnode {
wint_t cmn_from;
wint_t cmn_to;
struct cmapnode *cmn_left;
struct cmapnode *cmn_right;
};
struct cmap {
#define CM_CACHE_SIZE 128
wint_t cm_cache[CM_CACHE_SIZE];
bool cm_havecache;
struct cmapnode *cm_root;
#define CM_DEF_SELF -2
wint_t cm_def;
wint_t cm_min;
wint_t cm_max;
};
struct cmap * cmap_alloc(void);
bool cmap_add(struct cmap *, wint_t, wint_t);
wint_t cmap_lookup_hard(struct cmap *, wint_t);
void cmap_cache(struct cmap *);
wint_t cmap_default(struct cmap *, wint_t);
static __inline wint_t
cmap_lookup(struct cmap *cm, wint_t from)
{
if (from < CM_CACHE_SIZE && cm->cm_havecache)
return (cm->cm_cache[from]);
return (cmap_lookup_hard(cm, from));
}
static __inline wint_t
cmap_min(struct cmap *cm)
{
return (cm->cm_min);
}
static __inline wint_t
cmap_max(struct cmap *cm)
{
return (cm->cm_max);
}
#endif
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