external/bsd/mdocml/dist/eqn_html.c

   1 /*      Id: eqn_html.c,v 1.2 2011/07/24 10:09:03 kristaps 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 "html.h"
  29
  30 static  const enum htmltag fontmap[EQNFONT__MAX] = {
  31         TAG_SPAN, /* EQNFONT_NONE */
  32         TAG_SPAN, /* EQNFONT_ROMAN */
  33         TAG_B, /* EQNFONT_BOLD */
  34         TAG_B, /* EQNFONT_FAT */
  35         TAG_I /* EQNFONT_ITALIC */
  36 };
  37
  38
  39 static void     eqn_box(struct html *, const struct eqn_box *);
  40
  41 void
  42 print_eqn(struct html *p, const struct eqn *ep)
  43 {
  44         struct htmlpair  tag;
  45         struct tag      *t;
  46
  47         PAIR_CLASS_INIT(&tag, "eqn");
  48         t = print_otag(p, TAG_SPAN, 1, &tag);
  49
  50         p->flags |= HTML_NONOSPACE;
  51         eqn_box(p, ep->root);
  52         p->flags &= ~HTML_NONOSPACE;
  53
  54         print_tagq(p, t);
  55 }
  56
  57 static void
  58 eqn_box(struct html *p, const struct eqn_box *bp)
  59 {
  60         struct tag      *t;
  61
  62         t = EQNFONT_NONE == bp->font ? NULL :
  63                 print_otag(p, fontmap[(int)bp->font], 0, NULL);
  64
  65         if (bp->left)
  66                 print_text(p, bp->left);
  67
  68         if (bp->text)
  69                 print_text(p, bp->text);
  70
  71         if (bp->first)
  72                 eqn_box(p, bp->first);
  73
  74         if (NULL != t)
  75                 print_tagq(p, t);
  76         if (bp->right)
  77                 print_text(p, bp->right);
  78
  79         if (bp->next)
  80                 eqn_box(p, bp->next);
  81 }