1/*	$Id: roff_html.c,v 1.11 2017/06/24 14:38:33 schwarze Exp $ */
2/*
3 * Copyright (c) 2010 Kristaps Dzonsons <kristaps@bsd.lv>
4 * Copyright (c) 2014, 2017 Ingo Schwarze <schwarze@openbsd.org>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18#include <sys/types.h>
19
20#include <assert.h>
21#include <stddef.h>
22
23#include "mandoc.h"
24#include "roff.h"
25#include "out.h"
26#include "html.h"
27
28#define	ROFF_HTML_ARGS struct html *h, const struct roff_node *n
29
30typedef	void	(*roff_html_pre_fp)(ROFF_HTML_ARGS);
31
32static	void	  roff_html_pre_br(ROFF_HTML_ARGS);
33static	void	  roff_html_pre_ce(ROFF_HTML_ARGS);
34static	void	  roff_html_pre_sp(ROFF_HTML_ARGS);
35
36static	const roff_html_pre_fp roff_html_pre_acts[ROFF_MAX] = {
37	roff_html_pre_br,  /* br */
38	roff_html_pre_ce,  /* ce */
39	NULL,  /* ft */
40	NULL,  /* ll */
41	NULL,  /* mc */
42	NULL,  /* po */
43	roff_html_pre_ce,  /* rj */
44	roff_html_pre_sp,  /* sp */
45	NULL,  /* ta */
46	NULL,  /* ti */
47};
48
49
50void
51roff_html_pre(struct html *h, const struct roff_node *n)
52{
53	assert(n->tok < ROFF_MAX);
54	if (roff_html_pre_acts[n->tok] != NULL)
55		(*roff_html_pre_acts[n->tok])(h, n);
56}
57
58static void
59roff_html_pre_br(ROFF_HTML_ARGS)
60{
61	struct tag	*t;
62
63	t = print_otag(h, TAG_DIV, "");
64	print_text(h, "\\~");  /* So the div isn't empty. */
65	print_tagq(h, t);
66}
67
68static void
69roff_html_pre_ce(ROFF_HTML_ARGS)
70{
71	for (n = n->child->next; n != NULL; n = n->next) {
72		if (n->type == ROFFT_TEXT) {
73			if (n->flags & NODE_LINE)
74				roff_html_pre_br(h, n);
75			print_text(h, n->string);
76		} else
77			roff_html_pre(h, n);
78	}
79	roff_html_pre_br(h, n);
80}
81
82static void
83roff_html_pre_sp(ROFF_HTML_ARGS)
84{
85	struct roffsu	 su;
86
87	SCALE_VS_INIT(&su, 1);
88	if ((n = n->child) != NULL) {
89		if (a2roffsu(n->string, &su, SCALE_VS) == NULL)
90			su.scale = 1.0;
91		else if (su.scale < 0.0)
92			su.scale = 0.0;
93	}
94	print_otag(h, TAG_DIV, "suh", &su);
95	print_text(h, "\\~");  /* So the div isn't empty. */
96}
97