usr/src/cmd/tr/cmap.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 CMAP_H
  28 #define CMAP_H
  29
  30 #include <limits.h>
  31 #include <stdbool.h>
  32 #include <wchar.h>
  33
  34 struct cmapnode {
  35         wint_t          cmn_from;
  36         wint_t          cmn_to;
  37         struct cmapnode *cmn_left;
  38         struct cmapnode *cmn_right;
  39 };
  40
  41 struct cmap {
  42 #define CM_CACHE_SIZE   128
  43         wint_t          cm_cache[CM_CACHE_SIZE];
  44         bool            cm_havecache;
  45         struct cmapnode *cm_root;
  46 #define CM_DEF_SELF     -2
  47         wint_t          cm_def;
  48         wint_t          cm_min;
  49         wint_t          cm_max;
  50 };
  51
  52 struct cmap     *cmap_alloc(void);
  53 bool            cmap_add(struct cmap *, wint_t, wint_t);
  54 wint_t          cmap_lookup_hard(struct cmap *, wint_t);
  55 void            cmap_cache(struct cmap *);
  56 wint_t          cmap_default(struct cmap *, wint_t);
  57
  58 #endif