contrib/mdocml/eqn_term.c

   1 /*      $Id: eqn_term.c,v 1.5 2014/04/20 16:46:04 schwarze Exp $ */
   2 /*
   3  * Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv>
   4  *
   5  * Permission to use, copy, modify, and distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  */
  17 #ifdef HAVE_CONFIG_H
  18 #include "config.h"
  19 #endif
  20
  21 #include <assert.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25
  26 #include "mandoc.h"
  27 #include "out.h"
  28 #include "term.h"
  29
  30 static  const enum termfont fontmap[EQNFONT__MAX] = {
  31         TERMFONT_NONE, /* EQNFONT_NONE */
  32         TERMFONT_NONE, /* EQNFONT_ROMAN */
  33         TERMFONT_BOLD, /* EQNFONT_BOLD */
  34         TERMFONT_BOLD, /* EQNFONT_FAT */
  35         TERMFONT_UNDER /* EQNFONT_ITALIC */
  36 };
  37
  38 static void     eqn_box(struct termp *, const struct eqn_box *);
  39
  40
  41 void
  42 term_eqn(struct termp *p, const struct eqn *ep)
  43 {
  44
  45         p->flags |= TERMP_NONOSPACE;
  46         eqn_box(p, ep->root);
  47         term_word(p, " ");
  48         p->flags &= ~TERMP_NONOSPACE;
  49 }
  50
  51 static void
  52 eqn_box(struct termp *p, const struct eqn_box *bp)
  53 {
  54
  55         if (EQNFONT_NONE != bp->font)
  56                 term_fontpush(p, fontmap[(int)bp->font]);
  57         if (bp->left)
  58                 term_word(p, bp->left);
  59         if (EQN_SUBEXPR == bp->type)
  60                 term_word(p, "(");
  61
  62         if (bp->text)
  63                 term_word(p, bp->text);
  64
  65         if (bp->first)
  66                 eqn_box(p, bp->first);
  67
  68         if (EQN_SUBEXPR == bp->type)
  69                 term_word(p, ")");
  70         if (bp->right)
  71                 term_word(p, bp->right);
  72         if (EQNFONT_NONE != bp->font)
  73                 term_fontpop(p);
  74
  75         if (bp->next)
  76                 eqn_box(p, bp->next);
  77 }