aboutsummaryrefslogtreecommitdiff
path: root/usr.bin/mandoc/tbl_html.c
blob: 4dda78a49c95bdc0448459231d9320fa66b92270 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
/*	$OpenBSD: tbl_html.c,v 1.30 2021/05/16 23:16:22 schwarze Exp $ */
/*
 * Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv>
 * Copyright (c) 2014,2015,2017,2018,2021 Ingo Schwarze <schwarze@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
#include <sys/types.h>

#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "mandoc.h"
#include "roff.h"
#include "tbl.h"
#include "out.h"
#include "html.h"

static	void	 html_tblopen(struct html *, const struct tbl_span *);
static	size_t	 html_tbl_len(size_t, void *);
static	size_t	 html_tbl_strlen(const char *, void *);
static	size_t	 html_tbl_sulen(const struct roffsu *, void *);


static size_t
html_tbl_len(size_t sz, void *arg)
{
	return sz;
}

static size_t
html_tbl_strlen(const char *p, void *arg)
{
	return strlen(p);
}

static size_t
html_tbl_sulen(const struct roffsu *su, void *arg)
{
	if (su->scale < 0.0)
		return 0;

	switch (su->unit) {
	case SCALE_FS:  /* 2^16 basic units */
		return su->scale * 65536.0 / 24.0;
	case SCALE_IN:  /* 10 characters per inch */
		return su->scale * 10.0;
	case SCALE_CM:  /* 2.54 cm per inch */
		return su->scale * 10.0 / 2.54;
	case SCALE_PC:  /* 6 pica per inch */
	case SCALE_VS:
		return su->scale * 10.0 / 6.0;
	case SCALE_EN:
	case SCALE_EM:
		return su->scale;
	case SCALE_PT:  /* 12 points per pica */
		return su->scale * 10.0 / 6.0 / 12.0;
	case SCALE_BU:  /* 24 basic units per character */
		return su->scale / 24.0;
	case SCALE_MM:  /* 1/1000 inch */
		return su->scale / 100.0;
	default:
		abort();
	}
}

static void
html_tblopen(struct html *h, const struct tbl_span *sp)
{
	html_close_paragraph(h);
	if (h->tbl.cols == NULL) {
		h->tbl.len = html_tbl_len;
		h->tbl.slen = html_tbl_strlen;
		h->tbl.sulen = html_tbl_sulen;
		tblcalc(&h->tbl, sp, 0, 0);
	}
	assert(NULL == h->tblt);
	h->tblt = print_otag(h, TAG_TABLE, "c?ss", "tbl",
	    "border",
		sp->opts->opts & TBL_OPT_ALLBOX ? "1" : NULL,
	    "border-style",
		sp->opts->opts & TBL_OPT_DBOX ? "double" :
		sp->opts->opts & TBL_OPT_BOX ? "solid" : NULL,
	    "border-top-style",
		sp->pos == TBL_SPAN_DHORIZ ? "double" :
		sp->pos == TBL_SPAN_HORIZ ? "solid" : NULL);
}

void
print_tblclose(struct html *h)
{

	assert(h->tblt);
	print_tagq(h, h->tblt);
	h->tblt = NULL;
}

void
print_tbl(struct html *h, const struct tbl_span *sp)
{
	const struct tbl_dat	*dp;
	const struct tbl_cell	*cp;
	const struct tbl_span	*psp;
	struct tag		*tt;
	const char		*hspans, *vspans, *halign, *valign;
	const char		*bborder, *lborder, *rborder;
	char			 hbuf[4], vbuf[4];
	enum mandoc_esc		 save_font;
	int			 i;

	if (h->tblt == NULL)
		html_tblopen(h, sp);

	/*
	 * Horizontal lines spanning the whole table
	 * are handled by previous or following table rows.
	 */

	if (sp->pos != TBL_SPAN_DATA)
		return;

	/* Inhibit printing of spaces: we do padding ourselves. */

	h->flags |= HTML_NONOSPACE;
	h->flags |= HTML_NOSPACE;

	/* Draw a vertical line left of this row? */

	switch (sp->layout->vert) {
	case 2:
		lborder = "double";
		break;
	case 1:
		lborder = "solid";
		break;
	default:
		lborder = NULL;
		break;
	}

	/* Draw a horizontal line below this row? */

	bborder = NULL;
	if ((psp = sp->next) != NULL) {
		switch (psp->pos) {
		case TBL_SPAN_DHORIZ:
			bborder = "double";
			break;
		case TBL_SPAN_HORIZ:
			bborder = "solid";
			break;
		default:
			break;
		}
	}

	tt = print_otag(h, TAG_TR, "ss",
	    "border-left-style", lborder,
	    "border-bottom-style", bborder);

	for (dp = sp->first; dp != NULL; dp = dp->next) {
		print_stagq(h, tt);

		/*
		 * Do not generate <td> elements for continuations
		 * of spanned cells.  Larger <td> elements covering
		 * this space were already generated earlier.
		 */

		cp = dp->layout;
		if (cp->pos == TBL_CELL_SPAN || cp->pos == TBL_CELL_DOWN ||
		    (dp->string != NULL && strcmp(dp->string, "\\^") == 0))
			continue;

		/* Determine the attribute values. */

		if (dp->hspans > 0) {
			(void)snprintf(hbuf, sizeof(hbuf),
			    "%d", dp->hspans + 1);
			hspans = hbuf;
		} else
			hspans = NULL;
		if (dp->vspans > 0) {
			(void)snprintf(vbuf, sizeof(vbuf),
			    "%d", dp->vspans + 1);
			vspans = vbuf;
		} else
			vspans = NULL;

		switch (cp->pos) {
		case TBL_CELL_CENTRE:
			halign = "center";
			break;
		case TBL_CELL_RIGHT:
		case TBL_CELL_NUMBER:
			halign = "right";
			break;
		default:
			halign = NULL;
			break;
		}
		if (cp->flags & TBL_CELL_TALIGN)
			valign = "top";
		else if (cp->flags & TBL_CELL_BALIGN)
			valign = "bottom";
		else
			valign = NULL;

		for (i = dp->hspans; i > 0; i--)
			cp = cp->next;
		switch (cp->vert) {
		case 2:
			rborder = "double";
			break;
		case 1:
			rborder = "solid";
			break;
		default:
			rborder = NULL;
			break;
		}

		/* Print the element and the attributes. */

		print_otag(h, TAG_TD, "??sss",
		    "colspan", hspans, "rowspan", vspans,
		    "vertical-align", valign,
		    "text-align", halign,
		    "border-right-style", rborder);
		if (dp->string != NULL) {
			save_font = h->metac;
			if (dp->layout->flags & TBL_CELL_BOLD)
				html_setfont(h, ESCAPE_FONTBOLD);
			else if (dp->layout->flags & TBL_CELL_ITALIC)
				html_setfont(h, ESCAPE_FONTITALIC);
			if (dp->layout->pos == TBL_CELL_LONG)
				print_text(h, "\\[u2003]");  /* em space */
			print_text(h, dp->string);
			html_setfont(h, save_font);
		}
	}

	print_tagq(h, tt);

	h->flags &= ~HTML_NONOSPACE;

	if (sp->next == NULL) {
		assert(h->tbl.cols);
		free(h->tbl.cols);
		h->tbl.cols = NULL;
		print_tblclose(h);
	}
}