File: man_html.c

package info (click to toggle)
mdocml 1.14.4-1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye, buster, sid
  • size: 9,096 kB
  • sloc: ansic: 34,421; makefile: 994; sh: 461; perl: 374
file content (646 lines) | stat: -rw-r--r-- 13,627 bytes parent folder | download
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
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
/*	$Id: man_html.c,v 1.153 2018/07/27 17:49:31 schwarze Exp $ */
/*
 * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
 * Copyright (c) 2013,2014,2015,2017,2018 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 AUTHORS DISCLAIM ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS 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 "config.h"

#include <sys/types.h>

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

#include "mandoc_aux.h"
#include "mandoc.h"
#include "roff.h"
#include "man.h"
#include "out.h"
#include "html.h"
#include "main.h"

/* FIXME: have PD set the default vspace width. */

#define	MAN_ARGS	  const struct roff_meta *man, \
			  const struct roff_node *n, \
			  struct html *h

struct	htmlman {
	int		(*pre)(MAN_ARGS);
	int		(*post)(MAN_ARGS);
};

static	void		  print_bvspace(struct html *,
				const struct roff_node *);
static	void		  print_man_head(const struct roff_meta *,
				struct html *);
static	void		  print_man_nodelist(MAN_ARGS);
static	void		  print_man_node(MAN_ARGS);
static	int		  fillmode(struct html *, int);
static	int		  man_B_pre(MAN_ARGS);
static	int		  man_HP_pre(MAN_ARGS);
static	int		  man_IP_pre(MAN_ARGS);
static	int		  man_I_pre(MAN_ARGS);
static	int		  man_OP_pre(MAN_ARGS);
static	int		  man_PP_pre(MAN_ARGS);
static	int		  man_RS_pre(MAN_ARGS);
static	int		  man_SH_pre(MAN_ARGS);
static	int		  man_SM_pre(MAN_ARGS);
static	int		  man_SS_pre(MAN_ARGS);
static	int		  man_UR_pre(MAN_ARGS);
static	int		  man_alt_pre(MAN_ARGS);
static	int		  man_ign_pre(MAN_ARGS);
static	int		  man_in_pre(MAN_ARGS);
static	void		  man_root_post(const struct roff_meta *,
				struct html *);
static	void		  man_root_pre(const struct roff_meta *,
				struct html *);

static	const struct htmlman __mans[MAN_MAX - MAN_TH] = {
	{ NULL, NULL }, /* TH */
	{ man_SH_pre, NULL }, /* SH */
	{ man_SS_pre, NULL }, /* SS */
	{ man_IP_pre, NULL }, /* TP */
	{ man_PP_pre, NULL }, /* LP */
	{ man_PP_pre, NULL }, /* PP */
	{ man_PP_pre, NULL }, /* P */
	{ man_IP_pre, NULL }, /* IP */
	{ man_HP_pre, NULL }, /* HP */
	{ man_SM_pre, NULL }, /* SM */
	{ man_SM_pre, NULL }, /* SB */
	{ man_alt_pre, NULL }, /* BI */
	{ man_alt_pre, NULL }, /* IB */
	{ man_alt_pre, NULL }, /* BR */
	{ man_alt_pre, NULL }, /* RB */
	{ NULL, NULL }, /* R */
	{ man_B_pre, NULL }, /* B */
	{ man_I_pre, NULL }, /* I */
	{ man_alt_pre, NULL }, /* IR */
	{ man_alt_pre, NULL }, /* RI */
	{ NULL, NULL }, /* nf */
	{ NULL, NULL }, /* fi */
	{ NULL, NULL }, /* RE */
	{ man_RS_pre, NULL }, /* RS */
	{ man_ign_pre, NULL }, /* DT */
	{ man_ign_pre, NULL }, /* UC */
	{ man_ign_pre, NULL }, /* PD */
	{ man_ign_pre, NULL }, /* AT */
	{ man_in_pre, NULL }, /* in */
	{ man_OP_pre, NULL }, /* OP */
	{ NULL, NULL }, /* EX */
	{ NULL, NULL }, /* EE */
	{ man_UR_pre, NULL }, /* UR */
	{ NULL, NULL }, /* UE */
	{ man_UR_pre, NULL }, /* MT */
	{ NULL, NULL }, /* ME */
};
static	const struct htmlman *const mans = __mans - MAN_TH;


/*
 * Printing leading vertical space before a block.
 * This is used for the paragraph macros.
 * The rules are pretty simple, since there's very little nesting going
 * on here.  Basically, if we're the first within another block (SS/SH),
 * then don't emit vertical space.  If we are (RS), then do.  If not the
 * first, print it.
 */
static void
print_bvspace(struct html *h, const struct roff_node *n)
{

	if (n->body && n->body->child)
		if (n->body->child->type == ROFFT_TBL)
			return;

	if (n->parent->type == ROFFT_ROOT || n->parent->tok != MAN_RS)
		if (NULL == n->prev)
			return;

	print_paragraph(h);
}

void
html_man(void *arg, const struct roff_man *man)
{
	struct html		*h;
	struct roff_node	*n;
	struct tag		*t;

	h = (struct html *)arg;
	n = man->first->child;

	if ((h->oflags & HTML_FRAGMENT) == 0) {
		print_gen_decls(h);
		print_otag(h, TAG_HTML, "");
		if (n->type == ROFFT_COMMENT)
			print_gen_comment(h, n);
		t = print_otag(h, TAG_HEAD, "");
		print_man_head(&man->meta, h);
		print_tagq(h, t);
		print_otag(h, TAG_BODY, "");
	}

	man_root_pre(&man->meta, h);
	t = print_otag(h, TAG_DIV, "c", "manual-text");
	print_man_nodelist(&man->meta, n, h);
	print_tagq(h, t);
	man_root_post(&man->meta, h);
	print_tagq(h, NULL);
}

static void
print_man_head(const struct roff_meta *man, struct html *h)
{
	char	*cp;

	print_gen_head(h);
	mandoc_asprintf(&cp, "%s(%s)", man->title, man->msec);
	print_otag(h, TAG_TITLE, "");
	print_text(h, cp);
	free(cp);
}

static void
print_man_nodelist(MAN_ARGS)
{

	while (n != NULL) {
		print_man_node(man, n, h);
		n = n->next;
	}
}

static void
print_man_node(MAN_ARGS)
{
	static int	 want_fillmode = MAN_fi;
	static int	 save_fillmode;

	struct tag	*t;
	int		 child;

	/*
	 * Handle fill mode switch requests up front,
	 * they would just cause trouble in the subsequent code.
	 */

	switch (n->tok) {
	case MAN_nf:
	case MAN_EX:
		want_fillmode = MAN_nf;
		return;
	case MAN_fi:
	case MAN_EE:
		want_fillmode = MAN_fi;
		if (fillmode(h, 0) == MAN_fi)
			print_otag(h, TAG_BR, "");
		return;
	default:
		break;
	}

	/* Set up fill mode for the upcoming node. */

	switch (n->type) {
	case ROFFT_BLOCK:
		save_fillmode = 0;
		/* Some block macros suspend or cancel .nf. */
		switch (n->tok) {
		case MAN_TP:  /* Tagged paragraphs		*/
		case MAN_IP:  /* temporarily disable .nf	*/
		case MAN_HP:  /* for the head.			*/
			save_fillmode = want_fillmode;
			/* FALLTHROUGH */
		case MAN_SH:  /* Section headers		*/
		case MAN_SS:  /* permanently cancel .nf.	*/
			want_fillmode = MAN_fi;
			/* FALLTHROUGH */
		case MAN_PP:  /* These have no head.		*/
		case MAN_LP:  /* They will simply		*/
		case MAN_P:   /* reopen .nf in the body.	*/
		case MAN_RS:
		case MAN_UR:
		case MAN_MT:
			fillmode(h, MAN_fi);
			break;
		default:
			break;
		}
		break;
	case ROFFT_TBL:
		fillmode(h, MAN_fi);
		break;
	case ROFFT_ELEM:
		/*
		 * Some in-line macros produce tags and/or text
		 * in the handler, so they require fill mode to be
		 * configured up front just like for text nodes.
		 * For the others, keep the traditional approach
		 * of doing the same, for now.
		 */
		fillmode(h, want_fillmode);
		break;
	case ROFFT_TEXT:
		if (fillmode(h, want_fillmode) == MAN_fi &&
		    want_fillmode == MAN_fi &&
		    n->flags & NODE_LINE && *n->string == ' ' &&
		    (h->flags & HTML_NONEWLINE) == 0)
			print_otag(h, TAG_BR, "");
		if (*n->string != '\0')
			break;
		print_paragraph(h);
		return;
	case ROFFT_COMMENT:
		return;
	default:
		break;
	}

	/* Produce output for this node. */

	child = 1;
	switch (n->type) {
	case ROFFT_TEXT:
		t = h->tag;
		print_text(h, n->string);
		break;
	case ROFFT_EQN:
		t = h->tag;
		print_eqn(h, n->eqn);
		break;
	case ROFFT_TBL:
		/*
		 * This will take care of initialising all of the table
		 * state data for the first table, then tearing it down
		 * for the last one.
		 */
		print_tbl(h, n->span);
		return;
	default:
		/*
		 * Close out scope of font prior to opening a macro
		 * scope.
		 */
		if (HTMLFONT_NONE != h->metac) {
			h->metal = h->metac;
			h->metac = HTMLFONT_NONE;
		}

		/*
		 * Close out the current table, if it's open, and unset
		 * the "meta" table state.  This will be reopened on the
		 * next table element.
		 */
		if (h->tblt)
			print_tblclose(h);

		t = h->tag;
		if (n->tok < ROFF_MAX) {
			roff_html_pre(h, n);
			child = 0;
			break;
		}

		assert(n->tok >= MAN_TH && n->tok < MAN_MAX);
		if (mans[n->tok].pre)
			child = (*mans[n->tok].pre)(man, n, h);

		/* Some block macros resume .nf in the body. */
		if (save_fillmode && n->type == ROFFT_BODY)
			want_fillmode = save_fillmode;

		break;
	}

	if (child && n->child)
		print_man_nodelist(man, n->child, h);

	/* This will automatically close out any font scope. */
	print_stagq(h, t);

	if (fillmode(h, 0) == MAN_nf &&
	    n->next != NULL && n->next->flags & NODE_LINE)
		print_endline(h);
}

/*
 * MAN_nf switches to no-fill mode, MAN_fi to fill mode.
 * Other arguments do not switch.
 * The old mode is returned.
 */
static int
fillmode(struct html *h, int want)
{
	struct tag	*pre;
	int		 had;

	for (pre = h->tag; pre != NULL; pre = pre->next)
		if (pre->tag == TAG_PRE)
			break;

	had = pre == NULL ? MAN_fi : MAN_nf;

	if (want && want != had) {
		if (want == MAN_nf)
			print_otag(h, TAG_PRE, "");
		else
			print_tagq(h, pre);
	}
	return had;
}

static void
man_root_pre(const struct roff_meta *man, struct html *h)
{
	struct tag	*t, *tt;
	char		*title;

	assert(man->title);
	assert(man->msec);
	mandoc_asprintf(&title, "%s(%s)", man->title, man->msec);

	t = print_otag(h, TAG_TABLE, "c", "head");
	tt = print_otag(h, TAG_TR, "");

	print_otag(h, TAG_TD, "c", "head-ltitle");
	print_text(h, title);
	print_stagq(h, tt);

	print_otag(h, TAG_TD, "c", "head-vol");
	if (NULL != man->vol)
		print_text(h, man->vol);
	print_stagq(h, tt);

	print_otag(h, TAG_TD, "c", "head-rtitle");
	print_text(h, title);
	print_tagq(h, t);
	free(title);
}

static void
man_root_post(const struct roff_meta *man, struct html *h)
{
	struct tag	*t, *tt;

	t = print_otag(h, TAG_TABLE, "c", "foot");
	tt = print_otag(h, TAG_TR, "");

	print_otag(h, TAG_TD, "c", "foot-date");
	print_text(h, man->date);
	print_stagq(h, tt);

	print_otag(h, TAG_TD, "c", "foot-os");
	if (man->os)
		print_text(h, man->os);
	print_tagq(h, t);
}

static int
man_SH_pre(MAN_ARGS)
{
	char	*id;

	if (n->type == ROFFT_HEAD) {
		id = html_make_id(n, 1);
		print_otag(h, TAG_H1, "cTi", "Sh", id);
		if (id != NULL)
			print_otag(h, TAG_A, "chR", "permalink", id);
	}
	return 1;
}

static int
man_alt_pre(MAN_ARGS)
{
	const struct roff_node	*nn;
	int		 i;
	enum htmltag	 fp;
	struct tag	*t;

	for (i = 0, nn = n->child; nn; nn = nn->next, i++) {
		switch (n->tok) {
		case MAN_BI:
			fp = i % 2 ? TAG_I : TAG_B;
			break;
		case MAN_IB:
			fp = i % 2 ? TAG_B : TAG_I;
			break;
		case MAN_RI:
			fp = i % 2 ? TAG_I : TAG_MAX;
			break;
		case MAN_IR:
			fp = i % 2 ? TAG_MAX : TAG_I;
			break;
		case MAN_BR:
			fp = i % 2 ? TAG_MAX : TAG_B;
			break;
		case MAN_RB:
			fp = i % 2 ? TAG_B : TAG_MAX;
			break;
		default:
			abort();
		}

		if (i)
			h->flags |= HTML_NOSPACE;

		if (fp != TAG_MAX)
			t = print_otag(h, fp, "");

		print_text(h, nn->string);

		if (fp != TAG_MAX)
			print_tagq(h, t);
	}
	return 0;
}

static int
man_SM_pre(MAN_ARGS)
{
	print_otag(h, TAG_SMALL, "");
	if (MAN_SB == n->tok)
		print_otag(h, TAG_B, "");
	return 1;
}

static int
man_SS_pre(MAN_ARGS)
{
	char	*id;

	if (n->type == ROFFT_HEAD) {
		id = html_make_id(n, 1);
		print_otag(h, TAG_H2, "cTi", "Ss", id);
		if (id != NULL)
			print_otag(h, TAG_A, "chR", "permalink", id);
	}
	return 1;
}

static int
man_PP_pre(MAN_ARGS)
{

	if (n->type == ROFFT_HEAD)
		return 0;
	else if (n->type == ROFFT_BLOCK)
		print_bvspace(h, n);

	return 1;
}

static int
man_IP_pre(MAN_ARGS)
{
	const struct roff_node	*nn;

	if (n->type == ROFFT_BODY) {
		print_otag(h, TAG_DD, "");
		return 1;
	} else if (n->type != ROFFT_HEAD) {
		print_otag(h, TAG_DL, "c", "Bl-tag");
		return 1;
	}

	/* FIXME: width specification. */

	print_otag(h, TAG_DT, "");

	/* For IP, only print the first header element. */

	if (MAN_IP == n->tok && n->child)
		print_man_node(man, n->child, h);

	/* For TP, only print next-line header elements. */

	if (MAN_TP == n->tok) {
		nn = n->child;
		while (NULL != nn && 0 == (NODE_LINE & nn->flags))
			nn = nn->next;
		while (NULL != nn) {
			print_man_node(man, nn, h);
			nn = nn->next;
		}
	}

	return 0;
}

static int
man_HP_pre(MAN_ARGS)
{
	if (n->type == ROFFT_HEAD)
		return 0;

	if (n->type == ROFFT_BLOCK) {
		print_bvspace(h, n);
		print_otag(h, TAG_DIV, "c", "HP");
	}
	return 1;
}

static int
man_OP_pre(MAN_ARGS)
{
	struct tag	*tt;

	print_text(h, "[");
	h->flags |= HTML_NOSPACE;
	tt = print_otag(h, TAG_SPAN, "c", "Op");

	if (NULL != (n = n->child)) {
		print_otag(h, TAG_B, "");
		print_text(h, n->string);
	}

	print_stagq(h, tt);

	if (NULL != n && NULL != n->next) {
		print_otag(h, TAG_I, "");
		print_text(h, n->next->string);
	}

	print_stagq(h, tt);
	h->flags |= HTML_NOSPACE;
	print_text(h, "]");
	return 0;
}

static int
man_B_pre(MAN_ARGS)
{
	print_otag(h, TAG_B, "");
	return 1;
}

static int
man_I_pre(MAN_ARGS)
{
	print_otag(h, TAG_I, "");
	return 1;
}

static int
man_in_pre(MAN_ARGS)
{
	print_otag(h, TAG_BR, "");
	return 0;
}

static int
man_ign_pre(MAN_ARGS)
{

	return 0;
}

static int
man_RS_pre(MAN_ARGS)
{
	if (n->type == ROFFT_HEAD)
		return 0;
	if (n->type == ROFFT_BLOCK)
		print_otag(h, TAG_DIV, "c", "Bd-indent");
	return 1;
}

static int
man_UR_pre(MAN_ARGS)
{
	char *cp;
	n = n->child;
	assert(n->type == ROFFT_HEAD);
	if (n->child != NULL) {
		assert(n->child->type == ROFFT_TEXT);
		if (n->tok == MAN_MT) {
			mandoc_asprintf(&cp, "mailto:%s", n->child->string);
			print_otag(h, TAG_A, "cTh", "Mt", cp);
			free(cp);
		} else
			print_otag(h, TAG_A, "cTh", "Lk", n->child->string);
	}

	assert(n->next->type == ROFFT_BODY);
	if (n->next->child != NULL)
		n = n->next;

	print_man_nodelist(man, n->child, h);

	return 0;
}