usr/src/cmd/tr/cset.h

   1 /*
   2  * Copyright (c) 2004 Tim J. Robbins.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  */
  26
  27 #ifndef CSET_H
  28 #define CSET_H
  29
  30 #include <stdbool.h>
  31 #include <wchar.h>
  32 #include <wctype.h>
  33
  34 struct csnode {
  35         wchar_t         csn_min;
  36         wchar_t         csn_max;
  37         struct csnode   *csn_left;
  38         struct csnode   *csn_right;
  39 };
  40
  41 struct csclass {
  42         wctype_t        csc_type;
  43         bool            csc_invert;
  44         struct csclass  *csc_next;
  45 };
  46
  47 struct cset {
  48 #define CS_CACHE_SIZE   256
  49         bool            cs_cache[CS_CACHE_SIZE];
  50         bool            cs_havecache;
  51         struct csclass  *cs_classes;
  52         struct csnode   *cs_root;
  53         bool            cs_invert;
  54 };
  55
  56 bool                    cset_addclass(struct cset *, wctype_t, bool);
  57 struct cset             *cset_alloc(void);
  58 bool                    cset_add(struct cset *, wchar_t);
  59 void                    cset_invert(struct cset *);
  60 bool                    cset_in_hard(struct cset *, wchar_t);
  61 void                    cset_cache(struct cset *);
  62
  63 #endif  /* CSET_H */