diff options
Diffstat (limited to 'usr.bin/tr/cset.h')
| -rw-r--r-- | usr.bin/tr/cset.h | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/usr.bin/tr/cset.h b/usr.bin/tr/cset.h new file mode 100644 index 0000000..ab3eabd --- /dev/null +++ b/usr.bin/tr/cset.h @@ -0,0 +1,74 @@ +/*- + * 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 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 */ |
