1/*	$Id: tbl_html.c,v 1.23 2017/07/31 16:14:10 schwarze Exp $ */
2/*
3 * Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv>
4 * Copyright (c) 2014, 2015, 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 "config.h"
19
20#include <sys/types.h>
21
22#include <assert.h>
23#include <stdio.h>
24#include <stdlib.h>
25#include <string.h>
26
27#include "mandoc.h"
28#include "out.h"
29#include "html.h"
30
31static	void	 html_tblopen(struct html *, const struct tbl_span *);
32static	size_t	 html_tbl_len(size_t, void *);
33static	size_t	 html_tbl_strlen(const char *, void *);
34static	size_t	 html_tbl_sulen(const struct roffsu *, void *);
35
36
37static size_t
38html_tbl_len(size_t sz, void *arg)
39{
40	return sz;
41}
42
43static size_t
44html_tbl_strlen(const char *p, void *arg)
45{
46	return strlen(p);
47}
48
49static size_t
50html_tbl_sulen(const struct roffsu *su, void *arg)
51{
52	if (su->scale < 0.0)
53		return 0;
54
55	switch (su->unit) {
56	case SCALE_FS:  /* 2^16 basic units */
57		return su->scale * 65536.0 / 24.0;
58	case SCALE_IN:  /* 10 characters per inch */
59		return su->scale * 10.0;
60	case SCALE_CM:  /* 2.54 cm per inch */
61		return su->scale * 10.0 / 2.54;
62	case SCALE_PC:  /* 6 pica per inch */
63	case SCALE_VS:
64		return su->scale * 10.0 / 6.0;
65	case SCALE_EN:
66	case SCALE_EM:
67		return su->scale;
68	case SCALE_PT:  /* 12 points per pica */
69		return su->scale * 10.0 / 6.0 / 12.0;
70	case SCALE_BU:  /* 24 basic units per character */
71		return su->scale / 24.0;
72	case SCALE_MM:  /* 1/1000 inch */
73		return su->scale / 100.0;
74	default:
75		abort();
76	}
77}
78
79static void
80html_tblopen(struct html *h, const struct tbl_span *sp)
81{
82	struct tag	*t;
83	int		 ic;
84
85	if (h->tbl.cols == NULL) {
86		h->tbl.len = html_tbl_len;
87		h->tbl.slen = html_tbl_strlen;
88		h->tbl.sulen = html_tbl_sulen;
89		tblcalc(&h->tbl, sp, 0, 0);
90	}
91
92	assert(NULL == h->tblt);
93	h->tblt = print_otag(h, TAG_TABLE, "c", "tbl");
94
95	t = print_otag(h, TAG_COLGROUP, "");
96	for (ic = 0; ic < sp->opts->cols; ic++)
97		print_otag(h, TAG_COL, "shw", h->tbl.cols[ic].width);
98	print_tagq(h, t);
99}
100
101void
102print_tblclose(struct html *h)
103{
104
105	assert(h->tblt);
106	print_tagq(h, h->tblt);
107	h->tblt = NULL;
108}
109
110void
111print_tbl(struct html *h, const struct tbl_span *sp)
112{
113	const struct tbl_dat *dp;
114	struct tag	*tt;
115	int		 ic;
116
117	/* Inhibit printing of spaces: we do padding ourselves. */
118
119	if (h->tblt == NULL)
120		html_tblopen(h, sp);
121
122	assert(h->tblt);
123
124	h->flags |= HTML_NONOSPACE;
125	h->flags |= HTML_NOSPACE;
126
127	tt = print_otag(h, TAG_TR, "");
128
129	switch (sp->pos) {
130	case TBL_SPAN_HORIZ:
131	case TBL_SPAN_DHORIZ:
132		print_otag(h, TAG_TD, "?", "colspan", "0");
133		break;
134	default:
135		dp = sp->first;
136		for (ic = 0; ic < sp->opts->cols; ic++) {
137			print_stagq(h, tt);
138			print_otag(h, TAG_TD, "");
139
140			if (dp == NULL || dp->layout->col > ic)
141				continue;
142			if (dp->layout->pos != TBL_CELL_DOWN)
143				if (dp->string != NULL)
144					print_text(h, dp->string);
145			dp = dp->next;
146		}
147		break;
148	}
149
150	print_tagq(h, tt);
151
152	h->flags &= ~HTML_NONOSPACE;
153
154	if (sp->next == NULL) {
155		assert(h->tbl.cols);
156		free(h->tbl.cols);
157		h->tbl.cols = NULL;
158		print_tblclose(h);
159	}
160
161}
162