1/*	$Id: eqn_term.c,v 1.4 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 "term.h"
29
30static	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
38static void	eqn_box(struct termp *, const struct eqn_box *);
39
40void
41term_eqn(struct termp *p, const struct eqn *ep)
42{
43
44	p->flags |= TERMP_NONOSPACE;
45	eqn_box(p, ep->root);
46	term_word(p, " ");
47	p->flags &= ~TERMP_NONOSPACE;
48}
49
50static void
51eqn_box(struct termp *p, const struct eqn_box *bp)
52{
53
54	if (EQNFONT_NONE != bp->font)
55		term_fontpush(p, fontmap[(int)bp->font]);
56	if (bp->left)
57		term_word(p, bp->left);
58	if (EQN_SUBEXPR == bp->type)
59		term_word(p, "(");
60
61	if (bp->text)
62		term_word(p, bp->text);
63
64	if (bp->first)
65		eqn_box(p, bp->first);
66
67	if (EQN_SUBEXPR == bp->type)
68		term_word(p, ")");
69	if (bp->right)
70		term_word(p, bp->right);
71	if (EQNFONT_NONE != bp->font)
72		term_fontpop(p);
73
74	if (bp->next)
75		eqn_box(p, bp->next);
76}
77