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- /*-
- * SPDX-License-Identifier: BSD-2-Clause
- *
- * 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.
- */
- #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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