xref: /titanic_44/usr/src/cmd/mandoc/eqn_html.c (revision 5fd03bc0f2e00e7ba02316c2e08f45d52aab15db)
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 }
82