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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: src/usr.bin/tr/cset.h,v 1.2 2004/07/14 08:35:11 tjr Exp $
*/
#ifndef CSET_H
#define CSET_H
#include <stdbool.h>
#include <wchar.h>
#include <wctype.h>
struct csnode {
wchar_t csn_min;
wchar_t csn_max;
struct csnode *csn_left;
struct csnode *csn_right;
};
struct csclass {
wctype_t csc_type;
bool csc_invert;
struct csclass *csc_next;
};
struct cset {
#define CS_CACHE_SIZE 256
bool cs_cache[CS_CACHE_SIZE];
bool cs_havecache;
struct csclass *cs_classes;
struct csnode *cs_root;
bool cs_invert;
};
bool cset_addclass(struct cset *, wctype_t, bool);
struct cset * cset_alloc(void);
bool cset_add(struct cset *, wchar_t);
void cset_invert(struct cset *);
bool cset_in_hard(struct cset *, wchar_t);
void cset_cache(struct cset *);
static __inline bool
cset_in(struct cset *cs, wchar_t ch)
{
if (ch < CS_CACHE_SIZE && cs->cs_havecache)
return (cs->cs_cache[ch]);
return (cset_in_hard(cs, ch));
}
#endif /* CSET_H */
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