xref: /freebsd/contrib/mandoc/mdoc_html.c (revision 66df505066f51e6d8411b966765d828817f88971)
1 /* $Id: mdoc_html.c,v 1.342 2021/03/30 19:26:20 schwarze Exp $ */
2 /*
3  * Copyright (c) 2014-2021 Ingo Schwarze <schwarze@openbsd.org>
4  * Copyright (c) 2008-2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
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 AUTHORS DISCLAIM ALL WARRANTIES
11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS 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  * HTML formatter for mdoc(7) used by mandoc(1).
19  */
20 #include "config.h"
21 
22 #include <sys/types.h>
23 
24 #include <assert.h>
25 #include <ctype.h>
26 #include <stdio.h>
27 #include <stdlib.h>
28 #include <string.h>
29 #include <unistd.h>
30 
31 #include "mandoc_aux.h"
32 #include "mandoc.h"
33 #include "roff.h"
34 #include "mdoc.h"
35 #include "out.h"
36 #include "html.h"
37 #include "main.h"
38 
39 #define	MDOC_ARGS	  const struct roff_meta *meta, \
40 			  struct roff_node *n, \
41 			  struct html *h
42 
43 #ifndef MIN
44 #define	MIN(a,b)	((/*CONSTCOND*/(a)<(b))?(a):(b))
45 #endif
46 
47 struct	mdoc_html_act {
48 	int		(*pre)(MDOC_ARGS);
49 	void		(*post)(MDOC_ARGS);
50 };
51 
52 static	void		  print_mdoc_head(const struct roff_meta *,
53 				struct html *);
54 static	void		  print_mdoc_node(MDOC_ARGS);
55 static	void		  print_mdoc_nodelist(MDOC_ARGS);
56 static	void		  synopsis_pre(struct html *, struct roff_node *);
57 
58 static	void		  mdoc_root_post(const struct roff_meta *,
59 				struct html *);
60 static	int		  mdoc_root_pre(const struct roff_meta *,
61 				struct html *);
62 
63 static	void		  mdoc__x_post(MDOC_ARGS);
64 static	int		  mdoc__x_pre(MDOC_ARGS);
65 static	int		  mdoc_abort_pre(MDOC_ARGS);
66 static	int		  mdoc_ad_pre(MDOC_ARGS);
67 static	int		  mdoc_an_pre(MDOC_ARGS);
68 static	int		  mdoc_ap_pre(MDOC_ARGS);
69 static	int		  mdoc_ar_pre(MDOC_ARGS);
70 static	int		  mdoc_bd_pre(MDOC_ARGS);
71 static	int		  mdoc_bf_pre(MDOC_ARGS);
72 static	void		  mdoc_bk_post(MDOC_ARGS);
73 static	int		  mdoc_bk_pre(MDOC_ARGS);
74 static	int		  mdoc_bl_pre(MDOC_ARGS);
75 static	int		  mdoc_cd_pre(MDOC_ARGS);
76 static	int		  mdoc_code_pre(MDOC_ARGS);
77 static	int		  mdoc_d1_pre(MDOC_ARGS);
78 static	int		  mdoc_fa_pre(MDOC_ARGS);
79 static	int		  mdoc_fd_pre(MDOC_ARGS);
80 static	int		  mdoc_fl_pre(MDOC_ARGS);
81 static	int		  mdoc_fn_pre(MDOC_ARGS);
82 static	int		  mdoc_ft_pre(MDOC_ARGS);
83 static	int		  mdoc_em_pre(MDOC_ARGS);
84 static	void		  mdoc_eo_post(MDOC_ARGS);
85 static	int		  mdoc_eo_pre(MDOC_ARGS);
86 static	int		  mdoc_ex_pre(MDOC_ARGS);
87 static	void		  mdoc_fo_post(MDOC_ARGS);
88 static	int		  mdoc_fo_pre(MDOC_ARGS);
89 static	int		  mdoc_igndelim_pre(MDOC_ARGS);
90 static	int		  mdoc_in_pre(MDOC_ARGS);
91 static	int		  mdoc_it_pre(MDOC_ARGS);
92 static	int		  mdoc_lb_pre(MDOC_ARGS);
93 static	int		  mdoc_lk_pre(MDOC_ARGS);
94 static	int		  mdoc_mt_pre(MDOC_ARGS);
95 static	int		  mdoc_nd_pre(MDOC_ARGS);
96 static	int		  mdoc_nm_pre(MDOC_ARGS);
97 static	int		  mdoc_no_pre(MDOC_ARGS);
98 static	int		  mdoc_ns_pre(MDOC_ARGS);
99 static	int		  mdoc_pa_pre(MDOC_ARGS);
100 static	void		  mdoc_pf_post(MDOC_ARGS);
101 static	int		  mdoc_pp_pre(MDOC_ARGS);
102 static	void		  mdoc_quote_post(MDOC_ARGS);
103 static	int		  mdoc_quote_pre(MDOC_ARGS);
104 static	int		  mdoc_rs_pre(MDOC_ARGS);
105 static	int		  mdoc_sh_pre(MDOC_ARGS);
106 static	int		  mdoc_skip_pre(MDOC_ARGS);
107 static	int		  mdoc_sm_pre(MDOC_ARGS);
108 static	int		  mdoc_ss_pre(MDOC_ARGS);
109 static	int		  mdoc_st_pre(MDOC_ARGS);
110 static	int		  mdoc_sx_pre(MDOC_ARGS);
111 static	int		  mdoc_sy_pre(MDOC_ARGS);
112 static	int		  mdoc_tg_pre(MDOC_ARGS);
113 static	int		  mdoc_va_pre(MDOC_ARGS);
114 static	int		  mdoc_vt_pre(MDOC_ARGS);
115 static	int		  mdoc_xr_pre(MDOC_ARGS);
116 static	int		  mdoc_xx_pre(MDOC_ARGS);
117 
118 static const struct mdoc_html_act mdoc_html_acts[MDOC_MAX - MDOC_Dd] = {
119 	{NULL, NULL}, /* Dd */
120 	{NULL, NULL}, /* Dt */
121 	{NULL, NULL}, /* Os */
122 	{mdoc_sh_pre, NULL }, /* Sh */
123 	{mdoc_ss_pre, NULL }, /* Ss */
124 	{mdoc_pp_pre, NULL}, /* Pp */
125 	{mdoc_d1_pre, NULL}, /* D1 */
126 	{mdoc_d1_pre, NULL}, /* Dl */
127 	{mdoc_bd_pre, NULL}, /* Bd */
128 	{NULL, NULL}, /* Ed */
129 	{mdoc_bl_pre, NULL}, /* Bl */
130 	{NULL, NULL}, /* El */
131 	{mdoc_it_pre, NULL}, /* It */
132 	{mdoc_ad_pre, NULL}, /* Ad */
133 	{mdoc_an_pre, NULL}, /* An */
134 	{mdoc_ap_pre, NULL}, /* Ap */
135 	{mdoc_ar_pre, NULL}, /* Ar */
136 	{mdoc_cd_pre, NULL}, /* Cd */
137 	{mdoc_code_pre, NULL}, /* Cm */
138 	{mdoc_code_pre, NULL}, /* Dv */
139 	{mdoc_code_pre, NULL}, /* Er */
140 	{mdoc_code_pre, NULL}, /* Ev */
141 	{mdoc_ex_pre, NULL}, /* Ex */
142 	{mdoc_fa_pre, NULL}, /* Fa */
143 	{mdoc_fd_pre, NULL}, /* Fd */
144 	{mdoc_fl_pre, NULL}, /* Fl */
145 	{mdoc_fn_pre, NULL}, /* Fn */
146 	{mdoc_ft_pre, NULL}, /* Ft */
147 	{mdoc_code_pre, NULL}, /* Ic */
148 	{mdoc_in_pre, NULL}, /* In */
149 	{mdoc_code_pre, NULL}, /* Li */
150 	{mdoc_nd_pre, NULL}, /* Nd */
151 	{mdoc_nm_pre, NULL}, /* Nm */
152 	{mdoc_quote_pre, mdoc_quote_post}, /* Op */
153 	{mdoc_abort_pre, NULL}, /* Ot */
154 	{mdoc_pa_pre, NULL}, /* Pa */
155 	{mdoc_ex_pre, NULL}, /* Rv */
156 	{mdoc_st_pre, NULL}, /* St */
157 	{mdoc_va_pre, NULL}, /* Va */
158 	{mdoc_vt_pre, NULL}, /* Vt */
159 	{mdoc_xr_pre, NULL}, /* Xr */
160 	{mdoc__x_pre, mdoc__x_post}, /* %A */
161 	{mdoc__x_pre, mdoc__x_post}, /* %B */
162 	{mdoc__x_pre, mdoc__x_post}, /* %D */
163 	{mdoc__x_pre, mdoc__x_post}, /* %I */
164 	{mdoc__x_pre, mdoc__x_post}, /* %J */
165 	{mdoc__x_pre, mdoc__x_post}, /* %N */
166 	{mdoc__x_pre, mdoc__x_post}, /* %O */
167 	{mdoc__x_pre, mdoc__x_post}, /* %P */
168 	{mdoc__x_pre, mdoc__x_post}, /* %R */
169 	{mdoc__x_pre, mdoc__x_post}, /* %T */
170 	{mdoc__x_pre, mdoc__x_post}, /* %V */
171 	{NULL, NULL}, /* Ac */
172 	{mdoc_quote_pre, mdoc_quote_post}, /* Ao */
173 	{mdoc_quote_pre, mdoc_quote_post}, /* Aq */
174 	{mdoc_xx_pre, NULL}, /* At */
175 	{NULL, NULL}, /* Bc */
176 	{mdoc_bf_pre, NULL}, /* Bf */
177 	{mdoc_quote_pre, mdoc_quote_post}, /* Bo */
178 	{mdoc_quote_pre, mdoc_quote_post}, /* Bq */
179 	{mdoc_xx_pre, NULL}, /* Bsx */
180 	{mdoc_xx_pre, NULL}, /* Bx */
181 	{mdoc_skip_pre, NULL}, /* Db */
182 	{NULL, NULL}, /* Dc */
183 	{mdoc_quote_pre, mdoc_quote_post}, /* Do */
184 	{mdoc_quote_pre, mdoc_quote_post}, /* Dq */
185 	{NULL, NULL}, /* Ec */ /* FIXME: no space */
186 	{NULL, NULL}, /* Ef */
187 	{mdoc_em_pre, NULL}, /* Em */
188 	{mdoc_eo_pre, mdoc_eo_post}, /* Eo */
189 	{mdoc_xx_pre, NULL}, /* Fx */
190 	{mdoc_no_pre, NULL}, /* Ms */
191 	{mdoc_no_pre, NULL}, /* No */
192 	{mdoc_ns_pre, NULL}, /* Ns */
193 	{mdoc_xx_pre, NULL}, /* Nx */
194 	{mdoc_xx_pre, NULL}, /* Ox */
195 	{NULL, NULL}, /* Pc */
196 	{mdoc_igndelim_pre, mdoc_pf_post}, /* Pf */
197 	{mdoc_quote_pre, mdoc_quote_post}, /* Po */
198 	{mdoc_quote_pre, mdoc_quote_post}, /* Pq */
199 	{NULL, NULL}, /* Qc */
200 	{mdoc_quote_pre, mdoc_quote_post}, /* Ql */
201 	{mdoc_quote_pre, mdoc_quote_post}, /* Qo */
202 	{mdoc_quote_pre, mdoc_quote_post}, /* Qq */
203 	{NULL, NULL}, /* Re */
204 	{mdoc_rs_pre, NULL}, /* Rs */
205 	{NULL, NULL}, /* Sc */
206 	{mdoc_quote_pre, mdoc_quote_post}, /* So */
207 	{mdoc_quote_pre, mdoc_quote_post}, /* Sq */
208 	{mdoc_sm_pre, NULL}, /* Sm */
209 	{mdoc_sx_pre, NULL}, /* Sx */
210 	{mdoc_sy_pre, NULL}, /* Sy */
211 	{NULL, NULL}, /* Tn */
212 	{mdoc_xx_pre, NULL}, /* Ux */
213 	{NULL, NULL}, /* Xc */
214 	{NULL, NULL}, /* Xo */
215 	{mdoc_fo_pre, mdoc_fo_post}, /* Fo */
216 	{NULL, NULL}, /* Fc */
217 	{mdoc_quote_pre, mdoc_quote_post}, /* Oo */
218 	{NULL, NULL}, /* Oc */
219 	{mdoc_bk_pre, mdoc_bk_post}, /* Bk */
220 	{NULL, NULL}, /* Ek */
221 	{NULL, NULL}, /* Bt */
222 	{NULL, NULL}, /* Hf */
223 	{mdoc_em_pre, NULL}, /* Fr */
224 	{NULL, NULL}, /* Ud */
225 	{mdoc_lb_pre, NULL}, /* Lb */
226 	{mdoc_abort_pre, NULL}, /* Lp */
227 	{mdoc_lk_pre, NULL}, /* Lk */
228 	{mdoc_mt_pre, NULL}, /* Mt */
229 	{mdoc_quote_pre, mdoc_quote_post}, /* Brq */
230 	{mdoc_quote_pre, mdoc_quote_post}, /* Bro */
231 	{NULL, NULL}, /* Brc */
232 	{mdoc__x_pre, mdoc__x_post}, /* %C */
233 	{mdoc_skip_pre, NULL}, /* Es */
234 	{mdoc_quote_pre, mdoc_quote_post}, /* En */
235 	{mdoc_xx_pre, NULL}, /* Dx */
236 	{mdoc__x_pre, mdoc__x_post}, /* %Q */
237 	{mdoc__x_pre, mdoc__x_post}, /* %U */
238 	{NULL, NULL}, /* Ta */
239 	{mdoc_tg_pre, NULL}, /* Tg */
240 };
241 
242 
243 /*
244  * See the same function in mdoc_term.c for documentation.
245  */
246 static void
247 synopsis_pre(struct html *h, struct roff_node *n)
248 {
249 	struct roff_node *np;
250 
251 	if ((n->flags & NODE_SYNPRETTY) == 0 ||
252 	    (np = roff_node_prev(n)) == NULL)
253 		return;
254 
255 	if (np->tok == n->tok &&
256 	    MDOC_Fo != n->tok &&
257 	    MDOC_Ft != n->tok &&
258 	    MDOC_Fn != n->tok) {
259 		print_otag(h, TAG_BR, "");
260 		return;
261 	}
262 
263 	switch (np->tok) {
264 	case MDOC_Fd:
265 	case MDOC_Fn:
266 	case MDOC_Fo:
267 	case MDOC_In:
268 	case MDOC_Vt:
269 		break;
270 	case MDOC_Ft:
271 		if (n->tok != MDOC_Fn && n->tok != MDOC_Fo)
272 			break;
273 		/* FALLTHROUGH */
274 	default:
275 		print_otag(h, TAG_BR, "");
276 		return;
277 	}
278 	html_close_paragraph(h);
279 	print_otag(h, TAG_P, "c", "Pp");
280 }
281 
282 void
283 html_mdoc(void *arg, const struct roff_meta *mdoc)
284 {
285 	struct html		*h;
286 	struct roff_node	*n;
287 	struct tag		*t;
288 
289 	h = (struct html *)arg;
290 	n = mdoc->first->child;
291 
292 	if ((h->oflags & HTML_FRAGMENT) == 0) {
293 		print_gen_decls(h);
294 		print_otag(h, TAG_HTML, "");
295 		if (n != NULL && n->type == ROFFT_COMMENT)
296 			print_gen_comment(h, n);
297 		t = print_otag(h, TAG_HEAD, "");
298 		print_mdoc_head(mdoc, h);
299 		print_tagq(h, t);
300 		print_otag(h, TAG_BODY, "");
301 	}
302 
303 	mdoc_root_pre(mdoc, h);
304 	t = print_otag(h, TAG_DIV, "c", "manual-text");
305 	print_mdoc_nodelist(mdoc, n, h);
306 	print_tagq(h, t);
307 	mdoc_root_post(mdoc, h);
308 	print_tagq(h, NULL);
309 }
310 
311 static void
312 print_mdoc_head(const struct roff_meta *meta, struct html *h)
313 {
314 	char	*cp;
315 
316 	print_gen_head(h);
317 
318 	if (meta->arch != NULL && meta->msec != NULL)
319 		mandoc_asprintf(&cp, "%s(%s) (%s)", meta->title,
320 		    meta->msec, meta->arch);
321 	else if (meta->msec != NULL)
322 		mandoc_asprintf(&cp, "%s(%s)", meta->title, meta->msec);
323 	else if (meta->arch != NULL)
324 		mandoc_asprintf(&cp, "%s (%s)", meta->title, meta->arch);
325 	else
326 		cp = mandoc_strdup(meta->title);
327 
328 	print_otag(h, TAG_TITLE, "");
329 	print_text(h, cp);
330 	free(cp);
331 }
332 
333 static void
334 print_mdoc_nodelist(MDOC_ARGS)
335 {
336 
337 	while (n != NULL) {
338 		print_mdoc_node(meta, n, h);
339 		n = n->next;
340 	}
341 }
342 
343 static void
344 print_mdoc_node(MDOC_ARGS)
345 {
346 	struct tag	*t;
347 	int		 child;
348 
349 	if (n->type == ROFFT_COMMENT || n->flags & NODE_NOPRT)
350 		return;
351 
352 	if ((n->flags & NODE_NOFILL) == 0)
353 		html_fillmode(h, ROFF_fi);
354 	else if (html_fillmode(h, ROFF_nf) == ROFF_nf &&
355 	    n->tok != ROFF_fi && n->flags & NODE_LINE)
356 		print_endline(h);
357 
358 	child = 1;
359 	n->flags &= ~NODE_ENDED;
360 	switch (n->type) {
361 	case ROFFT_TEXT:
362 		if (n->flags & NODE_LINE) {
363 			switch (*n->string) {
364 			case '\0':
365 				h->col = 1;
366 				print_endline(h);
367 				return;
368 			case ' ':
369 				if ((h->flags & HTML_NONEWLINE) == 0 &&
370 				    (n->flags & NODE_NOFILL) == 0)
371 					print_otag(h, TAG_BR, "");
372 				break;
373 			default:
374 				break;
375 			}
376 		}
377 		t = h->tag;
378 		t->refcnt++;
379 		if (n->flags & NODE_DELIMC)
380 			h->flags |= HTML_NOSPACE;
381 		if (n->flags & NODE_HREF)
382 			print_tagged_text(h, n->string, n);
383 		else
384 			print_text(h, n->string);
385 		if (n->flags & NODE_DELIMO)
386 			h->flags |= HTML_NOSPACE;
387 		break;
388 	case ROFFT_EQN:
389 		t = h->tag;
390 		t->refcnt++;
391 		print_eqn(h, n->eqn);
392 		break;
393 	case ROFFT_TBL:
394 		/*
395 		 * This will take care of initialising all of the table
396 		 * state data for the first table, then tearing it down
397 		 * for the last one.
398 		 */
399 		print_tbl(h, n->span);
400 		return;
401 	default:
402 		/*
403 		 * Close out the current table, if it's open, and unset
404 		 * the "meta" table state.  This will be reopened on the
405 		 * next table element.
406 		 */
407 		if (h->tblt != NULL)
408 			print_tblclose(h);
409 		assert(h->tblt == NULL);
410 		t = h->tag;
411 		t->refcnt++;
412 		if (n->tok < ROFF_MAX) {
413 			roff_html_pre(h, n);
414 			t->refcnt--;
415 			print_stagq(h, t);
416 			return;
417 		}
418 		assert(n->tok >= MDOC_Dd && n->tok < MDOC_MAX);
419 		if (mdoc_html_acts[n->tok - MDOC_Dd].pre != NULL &&
420 		    (n->end == ENDBODY_NOT || n->child != NULL))
421 			child = (*mdoc_html_acts[n->tok - MDOC_Dd].pre)(meta,
422 			    n, h);
423 		break;
424 	}
425 
426 	if (h->flags & HTML_KEEP && n->flags & NODE_LINE) {
427 		h->flags &= ~HTML_KEEP;
428 		h->flags |= HTML_PREKEEP;
429 	}
430 
431 	if (child && n->child != NULL)
432 		print_mdoc_nodelist(meta, n->child, h);
433 
434 	t->refcnt--;
435 	print_stagq(h, t);
436 
437 	switch (n->type) {
438 	case ROFFT_TEXT:
439 	case ROFFT_EQN:
440 		break;
441 	default:
442 		if (mdoc_html_acts[n->tok - MDOC_Dd].post == NULL ||
443 		    n->flags & NODE_ENDED)
444 			break;
445 		(*mdoc_html_acts[n->tok - MDOC_Dd].post)(meta, n, h);
446 		if (n->end != ENDBODY_NOT)
447 			n->body->flags |= NODE_ENDED;
448 		break;
449 	}
450 }
451 
452 static void
453 mdoc_root_post(const struct roff_meta *meta, struct html *h)
454 {
455 	struct tag	*t, *tt;
456 
457 	t = print_otag(h, TAG_TABLE, "c", "foot");
458 	tt = print_otag(h, TAG_TR, "");
459 
460 	print_otag(h, TAG_TD, "c", "foot-date");
461 	print_text(h, meta->date);
462 	print_stagq(h, tt);
463 
464 	print_otag(h, TAG_TD, "c", "foot-os");
465 	print_text(h, meta->os);
466 	print_tagq(h, t);
467 }
468 
469 static int
470 mdoc_root_pre(const struct roff_meta *meta, struct html *h)
471 {
472 	struct tag	*t, *tt;
473 	char		*volume, *title;
474 
475 	if (NULL == meta->arch)
476 		volume = mandoc_strdup(meta->vol);
477 	else
478 		mandoc_asprintf(&volume, "%s (%s)",
479 		    meta->vol, meta->arch);
480 
481 	if (NULL == meta->msec)
482 		title = mandoc_strdup(meta->title);
483 	else
484 		mandoc_asprintf(&title, "%s(%s)",
485 		    meta->title, meta->msec);
486 
487 	t = print_otag(h, TAG_TABLE, "c", "head");
488 	tt = print_otag(h, TAG_TR, "");
489 
490 	print_otag(h, TAG_TD, "c", "head-ltitle");
491 	print_text(h, title);
492 	print_stagq(h, tt);
493 
494 	print_otag(h, TAG_TD, "c", "head-vol");
495 	print_text(h, volume);
496 	print_stagq(h, tt);
497 
498 	print_otag(h, TAG_TD, "c", "head-rtitle");
499 	print_text(h, title);
500 	print_tagq(h, t);
501 
502 	free(title);
503 	free(volume);
504 	return 1;
505 }
506 
507 static int
508 mdoc_code_pre(MDOC_ARGS)
509 {
510 	print_otag_id(h, TAG_CODE, roff_name[n->tok], n);
511 	return 1;
512 }
513 
514 static int
515 mdoc_sh_pre(MDOC_ARGS)
516 {
517 	struct roff_node	*sn, *subn;
518 	struct tag		*t, *tsec, *tsub;
519 	char			*id;
520 	int			 sc;
521 
522 	switch (n->type) {
523 	case ROFFT_BLOCK:
524 		html_close_paragraph(h);
525 		if ((h->oflags & HTML_TOC) == 0 ||
526 		    h->flags & HTML_TOCDONE ||
527 		    n->sec <= SEC_SYNOPSIS) {
528 			print_otag(h, TAG_SECTION, "c", "Sh");
529 			break;
530 		}
531 		h->flags |= HTML_TOCDONE;
532 		sc = 0;
533 		for (sn = n->next; sn != NULL; sn = sn->next)
534 			if (sn->sec == SEC_CUSTOM)
535 				if (++sc == 2)
536 					break;
537 		if (sc < 2)
538 			break;
539 		t = print_otag(h, TAG_H1, "c", "Sh");
540 		print_text(h, "TABLE OF CONTENTS");
541 		print_tagq(h, t);
542 		t = print_otag(h, TAG_UL, "c", "Bl-compact");
543 		for (sn = n; sn != NULL; sn = sn->next) {
544 			tsec = print_otag(h, TAG_LI, "");
545 			id = html_make_id(sn->head, 0);
546 			tsub = print_otag(h, TAG_A, "hR", id);
547 			free(id);
548 			print_mdoc_nodelist(meta, sn->head->child, h);
549 			print_tagq(h, tsub);
550 			tsub = NULL;
551 			for (subn = sn->body->child; subn != NULL;
552 			    subn = subn->next) {
553 				if (subn->tok != MDOC_Ss)
554 					continue;
555 				id = html_make_id(subn->head, 0);
556 				if (id == NULL)
557 					continue;
558 				if (tsub == NULL)
559 					print_otag(h, TAG_UL,
560 					    "c", "Bl-compact");
561 				tsub = print_otag(h, TAG_LI, "");
562 				print_otag(h, TAG_A, "hR", id);
563 				free(id);
564 				print_mdoc_nodelist(meta,
565 				    subn->head->child, h);
566 				print_tagq(h, tsub);
567 			}
568 			print_tagq(h, tsec);
569 		}
570 		print_tagq(h, t);
571 		print_otag(h, TAG_SECTION, "c", "Sh");
572 		break;
573 	case ROFFT_HEAD:
574 		print_otag_id(h, TAG_H1, "Sh", n);
575 		break;
576 	case ROFFT_BODY:
577 		if (n->sec == SEC_AUTHORS)
578 			h->flags &= ~(HTML_SPLIT|HTML_NOSPLIT);
579 		break;
580 	default:
581 		break;
582 	}
583 	return 1;
584 }
585 
586 static int
587 mdoc_ss_pre(MDOC_ARGS)
588 {
589 	switch (n->type) {
590 	case ROFFT_BLOCK:
591 		html_close_paragraph(h);
592 		print_otag(h, TAG_SECTION, "c", "Ss");
593 		break;
594 	case ROFFT_HEAD:
595 		print_otag_id(h, TAG_H2, "Ss", n);
596 		break;
597 	case ROFFT_BODY:
598 		break;
599 	default:
600 		abort();
601 	}
602 	return 1;
603 }
604 
605 static int
606 mdoc_fl_pre(MDOC_ARGS)
607 {
608 	struct roff_node	*nn;
609 
610 	print_otag_id(h, TAG_CODE, "Fl", n);
611 	print_text(h, "\\-");
612 	if (n->child != NULL ||
613 	    ((nn = roff_node_next(n)) != NULL &&
614 	     nn->type != ROFFT_TEXT &&
615 	     (nn->flags & NODE_LINE) == 0))
616 		h->flags |= HTML_NOSPACE;
617 
618 	return 1;
619 }
620 
621 static int
622 mdoc_nd_pre(MDOC_ARGS)
623 {
624 	switch (n->type) {
625 	case ROFFT_BLOCK:
626 		return 1;
627 	case ROFFT_HEAD:
628 		return 0;
629 	case ROFFT_BODY:
630 		break;
631 	default:
632 		abort();
633 	}
634 	print_text(h, "\\(em");
635 	print_otag(h, TAG_SPAN, "c", "Nd");
636 	return 1;
637 }
638 
639 static int
640 mdoc_nm_pre(MDOC_ARGS)
641 {
642 	switch (n->type) {
643 	case ROFFT_BLOCK:
644 		break;
645 	case ROFFT_HEAD:
646 		print_otag(h, TAG_TD, "");
647 		/* FALLTHROUGH */
648 	case ROFFT_ELEM:
649 		print_otag(h, TAG_CODE, "c", "Nm");
650 		return 1;
651 	case ROFFT_BODY:
652 		print_otag(h, TAG_TD, "");
653 		return 1;
654 	default:
655 		abort();
656 	}
657 	html_close_paragraph(h);
658 	synopsis_pre(h, n);
659 	print_otag(h, TAG_TABLE, "c", "Nm");
660 	print_otag(h, TAG_TR, "");
661 	return 1;
662 }
663 
664 static int
665 mdoc_xr_pre(MDOC_ARGS)
666 {
667 	if (NULL == n->child)
668 		return 0;
669 
670 	if (h->base_man1)
671 		print_otag(h, TAG_A, "chM", "Xr",
672 		    n->child->string, n->child->next == NULL ?
673 		    NULL : n->child->next->string);
674 	else
675 		print_otag(h, TAG_A, "c", "Xr");
676 
677 	n = n->child;
678 	print_text(h, n->string);
679 
680 	if (NULL == (n = n->next))
681 		return 0;
682 
683 	h->flags |= HTML_NOSPACE;
684 	print_text(h, "(");
685 	h->flags |= HTML_NOSPACE;
686 	print_text(h, n->string);
687 	h->flags |= HTML_NOSPACE;
688 	print_text(h, ")");
689 	return 0;
690 }
691 
692 static int
693 mdoc_tg_pre(MDOC_ARGS)
694 {
695 	char	*id;
696 
697 	if ((id = html_make_id(n, 1)) != NULL) {
698 		print_tagq(h, print_otag(h, TAG_MARK, "i", id));
699 		free(id);
700 	}
701 	return 0;
702 }
703 
704 static int
705 mdoc_ns_pre(MDOC_ARGS)
706 {
707 
708 	if ( ! (NODE_LINE & n->flags))
709 		h->flags |= HTML_NOSPACE;
710 	return 1;
711 }
712 
713 static int
714 mdoc_ar_pre(MDOC_ARGS)
715 {
716 	print_otag(h, TAG_VAR, "c", "Ar");
717 	return 1;
718 }
719 
720 static int
721 mdoc_xx_pre(MDOC_ARGS)
722 {
723 	print_otag(h, TAG_SPAN, "c", "Ux");
724 	return 1;
725 }
726 
727 static int
728 mdoc_it_pre(MDOC_ARGS)
729 {
730 	const struct roff_node	*bl;
731 	enum mdoc_list		 type;
732 
733 	bl = n->parent;
734 	while (bl->tok != MDOC_Bl)
735 		bl = bl->parent;
736 	type = bl->norm->Bl.type;
737 
738 	switch (type) {
739 	case LIST_bullet:
740 	case LIST_dash:
741 	case LIST_hyphen:
742 	case LIST_item:
743 	case LIST_enum:
744 		switch (n->type) {
745 		case ROFFT_HEAD:
746 			return 0;
747 		case ROFFT_BODY:
748 			print_otag_id(h, TAG_LI, NULL, n);
749 			break;
750 		default:
751 			break;
752 		}
753 		break;
754 	case LIST_diag:
755 	case LIST_hang:
756 	case LIST_inset:
757 	case LIST_ohang:
758 		switch (n->type) {
759 		case ROFFT_HEAD:
760 			print_otag_id(h, TAG_DT, NULL, n);
761 			break;
762 		case ROFFT_BODY:
763 			print_otag(h, TAG_DD, "");
764 			break;
765 		default:
766 			break;
767 		}
768 		break;
769 	case LIST_tag:
770 		switch (n->type) {
771 		case ROFFT_HEAD:
772 			print_otag_id(h, TAG_DT, NULL, n);
773 			break;
774 		case ROFFT_BODY:
775 			if (n->child == NULL) {
776 				print_otag(h, TAG_DD, "s", "width", "auto");
777 				print_text(h, "\\ ");
778 			} else
779 				print_otag(h, TAG_DD, "");
780 			break;
781 		default:
782 			break;
783 		}
784 		break;
785 	case LIST_column:
786 		switch (n->type) {
787 		case ROFFT_HEAD:
788 			break;
789 		case ROFFT_BODY:
790 			print_otag(h, TAG_TD, "");
791 			break;
792 		default:
793 			print_otag_id(h, TAG_TR, NULL, n);
794 		}
795 	default:
796 		break;
797 	}
798 
799 	return 1;
800 }
801 
802 static int
803 mdoc_bl_pre(MDOC_ARGS)
804 {
805 	char		 cattr[32];
806 	struct mdoc_bl	*bl;
807 	enum htmltag	 elemtype;
808 
809 	switch (n->type) {
810 	case ROFFT_BLOCK:
811 		html_close_paragraph(h);
812 		break;
813 	case ROFFT_HEAD:
814 		return 0;
815 	case ROFFT_BODY:
816 		return 1;
817 	default:
818 		abort();
819 	}
820 
821 	bl = &n->norm->Bl;
822 	switch (bl->type) {
823 	case LIST_bullet:
824 		elemtype = TAG_UL;
825 		(void)strlcpy(cattr, "Bl-bullet", sizeof(cattr));
826 		break;
827 	case LIST_dash:
828 	case LIST_hyphen:
829 		elemtype = TAG_UL;
830 		(void)strlcpy(cattr, "Bl-dash", sizeof(cattr));
831 		break;
832 	case LIST_item:
833 		elemtype = TAG_UL;
834 		(void)strlcpy(cattr, "Bl-item", sizeof(cattr));
835 		break;
836 	case LIST_enum:
837 		elemtype = TAG_OL;
838 		(void)strlcpy(cattr, "Bl-enum", sizeof(cattr));
839 		break;
840 	case LIST_diag:
841 		elemtype = TAG_DL;
842 		(void)strlcpy(cattr, "Bl-diag", sizeof(cattr));
843 		break;
844 	case LIST_hang:
845 		elemtype = TAG_DL;
846 		(void)strlcpy(cattr, "Bl-hang", sizeof(cattr));
847 		break;
848 	case LIST_inset:
849 		elemtype = TAG_DL;
850 		(void)strlcpy(cattr, "Bl-inset", sizeof(cattr));
851 		break;
852 	case LIST_ohang:
853 		elemtype = TAG_DL;
854 		(void)strlcpy(cattr, "Bl-ohang", sizeof(cattr));
855 		break;
856 	case LIST_tag:
857 		if (bl->offs)
858 			print_otag(h, TAG_DIV, "c", "Bd-indent");
859 		print_otag_id(h, TAG_DL,
860 		    bl->comp ? "Bl-tag Bl-compact" : "Bl-tag", n->body);
861 		return 1;
862 	case LIST_column:
863 		elemtype = TAG_TABLE;
864 		(void)strlcpy(cattr, "Bl-column", sizeof(cattr));
865 		break;
866 	default:
867 		abort();
868 	}
869 	if (bl->offs != NULL)
870 		(void)strlcat(cattr, " Bd-indent", sizeof(cattr));
871 	if (bl->comp)
872 		(void)strlcat(cattr, " Bl-compact", sizeof(cattr));
873 	print_otag_id(h, elemtype, cattr, n->body);
874 	return 1;
875 }
876 
877 static int
878 mdoc_ex_pre(MDOC_ARGS)
879 {
880 	if (roff_node_prev(n) != NULL)
881 		print_otag(h, TAG_BR, "");
882 	return 1;
883 }
884 
885 static int
886 mdoc_st_pre(MDOC_ARGS)
887 {
888 	print_otag(h, TAG_SPAN, "c", "St");
889 	return 1;
890 }
891 
892 static int
893 mdoc_em_pre(MDOC_ARGS)
894 {
895 	print_otag_id(h, TAG_I, "Em", n);
896 	return 1;
897 }
898 
899 static int
900 mdoc_d1_pre(MDOC_ARGS)
901 {
902 	switch (n->type) {
903 	case ROFFT_BLOCK:
904 		html_close_paragraph(h);
905 		return 1;
906 	case ROFFT_HEAD:
907 		return 0;
908 	case ROFFT_BODY:
909 		break;
910 	default:
911 		abort();
912 	}
913 	print_otag_id(h, TAG_DIV, "Bd Bd-indent", n);
914 	if (n->tok == MDOC_Dl)
915 		print_otag(h, TAG_CODE, "c", "Li");
916 	return 1;
917 }
918 
919 static int
920 mdoc_sx_pre(MDOC_ARGS)
921 {
922 	char	*id;
923 
924 	id = html_make_id(n, 0);
925 	print_otag(h, TAG_A, "chR", "Sx", id);
926 	free(id);
927 	return 1;
928 }
929 
930 static int
931 mdoc_bd_pre(MDOC_ARGS)
932 {
933 	char			 buf[20];
934 	struct roff_node	*nn;
935 	int			 comp;
936 
937 	switch (n->type) {
938 	case ROFFT_BLOCK:
939 		html_close_paragraph(h);
940 		return 1;
941 	case ROFFT_HEAD:
942 		return 0;
943 	case ROFFT_BODY:
944 		break;
945 	default:
946 		abort();
947 	}
948 
949 	/* Handle preceding whitespace. */
950 
951 	comp = n->norm->Bd.comp;
952 	for (nn = n; nn != NULL && comp == 0; nn = nn->parent) {
953 		if (nn->type != ROFFT_BLOCK)
954 			continue;
955 		if (nn->tok == MDOC_Sh || nn->tok == MDOC_Ss)
956 			comp = 1;
957 		if (roff_node_prev(nn) != NULL)
958 			break;
959 	}
960 	(void)strlcpy(buf, "Bd", sizeof(buf));
961 	if (comp == 0)
962 		(void)strlcat(buf, " Pp", sizeof(buf));
963 
964 	/* Handle the -offset argument. */
965 
966 	if (n->norm->Bd.offs != NULL &&
967 	    strcmp(n->norm->Bd.offs, "left") != 0)
968 		(void)strlcat(buf, " Bd-indent", sizeof(buf));
969 
970 	if (n->norm->Bd.type == DISP_literal)
971 		(void)strlcat(buf, " Li", sizeof(buf));
972 
973 	print_otag_id(h, TAG_DIV, buf, n);
974 	return 1;
975 }
976 
977 static int
978 mdoc_pa_pre(MDOC_ARGS)
979 {
980 	print_otag(h, TAG_SPAN, "c", "Pa");
981 	return 1;
982 }
983 
984 static int
985 mdoc_ad_pre(MDOC_ARGS)
986 {
987 	print_otag(h, TAG_SPAN, "c", "Ad");
988 	return 1;
989 }
990 
991 static int
992 mdoc_an_pre(MDOC_ARGS)
993 {
994 	if (n->norm->An.auth == AUTH_split) {
995 		h->flags &= ~HTML_NOSPLIT;
996 		h->flags |= HTML_SPLIT;
997 		return 0;
998 	}
999 	if (n->norm->An.auth == AUTH_nosplit) {
1000 		h->flags &= ~HTML_SPLIT;
1001 		h->flags |= HTML_NOSPLIT;
1002 		return 0;
1003 	}
1004 
1005 	if (h->flags & HTML_SPLIT)
1006 		print_otag(h, TAG_BR, "");
1007 
1008 	if (n->sec == SEC_AUTHORS && ! (h->flags & HTML_NOSPLIT))
1009 		h->flags |= HTML_SPLIT;
1010 
1011 	print_otag(h, TAG_SPAN, "c", "An");
1012 	return 1;
1013 }
1014 
1015 static int
1016 mdoc_cd_pre(MDOC_ARGS)
1017 {
1018 	synopsis_pre(h, n);
1019 	print_otag(h, TAG_CODE, "c", "Cd");
1020 	return 1;
1021 }
1022 
1023 static int
1024 mdoc_fa_pre(MDOC_ARGS)
1025 {
1026 	const struct roff_node	*nn;
1027 	struct tag		*t;
1028 
1029 	if (n->parent->tok != MDOC_Fo) {
1030 		print_otag(h, TAG_VAR, "c", "Fa");
1031 		return 1;
1032 	}
1033 	for (nn = n->child; nn != NULL; nn = nn->next) {
1034 		t = print_otag(h, TAG_VAR, "c", "Fa");
1035 		print_text(h, nn->string);
1036 		print_tagq(h, t);
1037 		if (nn->next != NULL) {
1038 			h->flags |= HTML_NOSPACE;
1039 			print_text(h, ",");
1040 		}
1041 	}
1042 	if (n->child != NULL &&
1043 	    (nn = roff_node_next(n)) != NULL &&
1044 	    nn->tok == MDOC_Fa) {
1045 		h->flags |= HTML_NOSPACE;
1046 		print_text(h, ",");
1047 	}
1048 	return 0;
1049 }
1050 
1051 static int
1052 mdoc_fd_pre(MDOC_ARGS)
1053 {
1054 	struct tag	*t;
1055 	char		*buf, *cp;
1056 
1057 	synopsis_pre(h, n);
1058 
1059 	if (NULL == (n = n->child))
1060 		return 0;
1061 
1062 	assert(n->type == ROFFT_TEXT);
1063 
1064 	if (strcmp(n->string, "#include")) {
1065 		print_otag(h, TAG_CODE, "c", "Fd");
1066 		return 1;
1067 	}
1068 
1069 	print_otag(h, TAG_CODE, "c", "In");
1070 	print_text(h, n->string);
1071 
1072 	if (NULL != (n = n->next)) {
1073 		assert(n->type == ROFFT_TEXT);
1074 
1075 		if (h->base_includes) {
1076 			cp = n->string;
1077 			if (*cp == '<' || *cp == '"')
1078 				cp++;
1079 			buf = mandoc_strdup(cp);
1080 			cp = strchr(buf, '\0') - 1;
1081 			if (cp >= buf && (*cp == '>' || *cp == '"'))
1082 				*cp = '\0';
1083 			t = print_otag(h, TAG_A, "chI", "In", buf);
1084 			free(buf);
1085 		} else
1086 			t = print_otag(h, TAG_A, "c", "In");
1087 
1088 		print_text(h, n->string);
1089 		print_tagq(h, t);
1090 
1091 		n = n->next;
1092 	}
1093 
1094 	for ( ; n; n = n->next) {
1095 		assert(n->type == ROFFT_TEXT);
1096 		print_text(h, n->string);
1097 	}
1098 
1099 	return 0;
1100 }
1101 
1102 static int
1103 mdoc_vt_pre(MDOC_ARGS)
1104 {
1105 	if (n->type == ROFFT_BLOCK) {
1106 		synopsis_pre(h, n);
1107 		return 1;
1108 	} else if (n->type == ROFFT_ELEM) {
1109 		synopsis_pre(h, n);
1110 	} else if (n->type == ROFFT_HEAD)
1111 		return 0;
1112 
1113 	print_otag(h, TAG_VAR, "c", "Vt");
1114 	return 1;
1115 }
1116 
1117 static int
1118 mdoc_ft_pre(MDOC_ARGS)
1119 {
1120 	synopsis_pre(h, n);
1121 	print_otag(h, TAG_VAR, "c", "Ft");
1122 	return 1;
1123 }
1124 
1125 static int
1126 mdoc_fn_pre(MDOC_ARGS)
1127 {
1128 	struct tag	*t;
1129 	char		 nbuf[BUFSIZ];
1130 	const char	*sp, *ep;
1131 	int		 sz, pretty;
1132 
1133 	pretty = NODE_SYNPRETTY & n->flags;
1134 	synopsis_pre(h, n);
1135 
1136 	/* Split apart into type and name. */
1137 	assert(n->child->string);
1138 	sp = n->child->string;
1139 
1140 	ep = strchr(sp, ' ');
1141 	if (NULL != ep) {
1142 		t = print_otag(h, TAG_VAR, "c", "Ft");
1143 
1144 		while (ep) {
1145 			sz = MIN((int)(ep - sp), BUFSIZ - 1);
1146 			(void)memcpy(nbuf, sp, (size_t)sz);
1147 			nbuf[sz] = '\0';
1148 			print_text(h, nbuf);
1149 			sp = ++ep;
1150 			ep = strchr(sp, ' ');
1151 		}
1152 		print_tagq(h, t);
1153 	}
1154 
1155 	t = print_otag_id(h, TAG_CODE, "Fn", n);
1156 
1157 	if (sp)
1158 		print_text(h, sp);
1159 
1160 	print_tagq(h, t);
1161 
1162 	h->flags |= HTML_NOSPACE;
1163 	print_text(h, "(");
1164 	h->flags |= HTML_NOSPACE;
1165 
1166 	for (n = n->child->next; n; n = n->next) {
1167 		if (NODE_SYNPRETTY & n->flags)
1168 			t = print_otag(h, TAG_VAR, "cs", "Fa",
1169 			    "white-space", "nowrap");
1170 		else
1171 			t = print_otag(h, TAG_VAR, "c", "Fa");
1172 		print_text(h, n->string);
1173 		print_tagq(h, t);
1174 		if (n->next) {
1175 			h->flags |= HTML_NOSPACE;
1176 			print_text(h, ",");
1177 		}
1178 	}
1179 
1180 	h->flags |= HTML_NOSPACE;
1181 	print_text(h, ")");
1182 
1183 	if (pretty) {
1184 		h->flags |= HTML_NOSPACE;
1185 		print_text(h, ";");
1186 	}
1187 
1188 	return 0;
1189 }
1190 
1191 static int
1192 mdoc_sm_pre(MDOC_ARGS)
1193 {
1194 
1195 	if (NULL == n->child)
1196 		h->flags ^= HTML_NONOSPACE;
1197 	else if (0 == strcmp("on", n->child->string))
1198 		h->flags &= ~HTML_NONOSPACE;
1199 	else
1200 		h->flags |= HTML_NONOSPACE;
1201 
1202 	if ( ! (HTML_NONOSPACE & h->flags))
1203 		h->flags &= ~HTML_NOSPACE;
1204 
1205 	return 0;
1206 }
1207 
1208 static int
1209 mdoc_skip_pre(MDOC_ARGS)
1210 {
1211 
1212 	return 0;
1213 }
1214 
1215 static int
1216 mdoc_pp_pre(MDOC_ARGS)
1217 {
1218 	char	*id;
1219 
1220 	if (n->flags & NODE_NOFILL) {
1221 		print_endline(h);
1222 		if (n->flags & NODE_ID)
1223 			mdoc_tg_pre(meta, n, h);
1224 		else {
1225 			h->col = 1;
1226 			print_endline(h);
1227 		}
1228 	} else {
1229 		html_close_paragraph(h);
1230 		id = n->flags & NODE_ID ? html_make_id(n, 1) : NULL;
1231 		print_otag(h, TAG_P, "ci", "Pp", id);
1232 		free(id);
1233 	}
1234 	return 0;
1235 }
1236 
1237 static int
1238 mdoc_lk_pre(MDOC_ARGS)
1239 {
1240 	const struct roff_node *link, *descr, *punct;
1241 	struct tag	*t;
1242 
1243 	if ((link = n->child) == NULL)
1244 		return 0;
1245 
1246 	/* Find beginning of trailing punctuation. */
1247 	punct = n->last;
1248 	while (punct != link && punct->flags & NODE_DELIMC)
1249 		punct = punct->prev;
1250 	punct = punct->next;
1251 
1252 	/* Link target and link text. */
1253 	descr = link->next;
1254 	if (descr == punct)
1255 		descr = link;  /* no text */
1256 	t = print_otag(h, TAG_A, "ch", "Lk", link->string);
1257 	do {
1258 		if (descr->flags & (NODE_DELIMC | NODE_DELIMO))
1259 			h->flags |= HTML_NOSPACE;
1260 		print_text(h, descr->string);
1261 		descr = descr->next;
1262 	} while (descr != punct);
1263 	print_tagq(h, t);
1264 
1265 	/* Trailing punctuation. */
1266 	while (punct != NULL) {
1267 		h->flags |= HTML_NOSPACE;
1268 		print_text(h, punct->string);
1269 		punct = punct->next;
1270 	}
1271 	return 0;
1272 }
1273 
1274 static int
1275 mdoc_mt_pre(MDOC_ARGS)
1276 {
1277 	struct tag	*t;
1278 	char		*cp;
1279 
1280 	for (n = n->child; n; n = n->next) {
1281 		assert(n->type == ROFFT_TEXT);
1282 		mandoc_asprintf(&cp, "mailto:%s", n->string);
1283 		t = print_otag(h, TAG_A, "ch", "Mt", cp);
1284 		print_text(h, n->string);
1285 		print_tagq(h, t);
1286 		free(cp);
1287 	}
1288 	return 0;
1289 }
1290 
1291 static int
1292 mdoc_fo_pre(MDOC_ARGS)
1293 {
1294 	struct tag	*t;
1295 
1296 	switch (n->type) {
1297 	case ROFFT_BLOCK:
1298 		synopsis_pre(h, n);
1299 		return 1;
1300 	case ROFFT_HEAD:
1301 		if (n->child != NULL) {
1302 			t = print_otag_id(h, TAG_CODE, "Fn", n);
1303 			print_text(h, n->child->string);
1304 			print_tagq(h, t);
1305 		}
1306 		return 0;
1307 	case ROFFT_BODY:
1308 		h->flags |= HTML_NOSPACE;
1309 		print_text(h, "(");
1310 		h->flags |= HTML_NOSPACE;
1311 		return 1;
1312 	default:
1313 		abort();
1314 	}
1315 }
1316 
1317 static void
1318 mdoc_fo_post(MDOC_ARGS)
1319 {
1320 	if (n->type != ROFFT_BODY)
1321 		return;
1322 	h->flags |= HTML_NOSPACE;
1323 	print_text(h, ")");
1324 	h->flags |= HTML_NOSPACE;
1325 	print_text(h, ";");
1326 }
1327 
1328 static int
1329 mdoc_in_pre(MDOC_ARGS)
1330 {
1331 	struct tag	*t;
1332 
1333 	synopsis_pre(h, n);
1334 	print_otag(h, TAG_CODE, "c", "In");
1335 
1336 	/*
1337 	 * The first argument of the `In' gets special treatment as
1338 	 * being a linked value.  Subsequent values are printed
1339 	 * afterward.  groff does similarly.  This also handles the case
1340 	 * of no children.
1341 	 */
1342 
1343 	if (NODE_SYNPRETTY & n->flags && NODE_LINE & n->flags)
1344 		print_text(h, "#include");
1345 
1346 	print_text(h, "<");
1347 	h->flags |= HTML_NOSPACE;
1348 
1349 	if (NULL != (n = n->child)) {
1350 		assert(n->type == ROFFT_TEXT);
1351 
1352 		if (h->base_includes)
1353 			t = print_otag(h, TAG_A, "chI", "In", n->string);
1354 		else
1355 			t = print_otag(h, TAG_A, "c", "In");
1356 		print_text(h, n->string);
1357 		print_tagq(h, t);
1358 
1359 		n = n->next;
1360 	}
1361 
1362 	h->flags |= HTML_NOSPACE;
1363 	print_text(h, ">");
1364 
1365 	for ( ; n; n = n->next) {
1366 		assert(n->type == ROFFT_TEXT);
1367 		print_text(h, n->string);
1368 	}
1369 	return 0;
1370 }
1371 
1372 static int
1373 mdoc_va_pre(MDOC_ARGS)
1374 {
1375 	print_otag(h, TAG_VAR, "c", "Va");
1376 	return 1;
1377 }
1378 
1379 static int
1380 mdoc_ap_pre(MDOC_ARGS)
1381 {
1382 	h->flags |= HTML_NOSPACE;
1383 	print_text(h, "\\(aq");
1384 	h->flags |= HTML_NOSPACE;
1385 	return 1;
1386 }
1387 
1388 static int
1389 mdoc_bf_pre(MDOC_ARGS)
1390 {
1391 	const char	*cattr;
1392 
1393 	switch (n->type) {
1394 	case ROFFT_BLOCK:
1395 		html_close_paragraph(h);
1396 		return 1;
1397 	case ROFFT_HEAD:
1398 		return 0;
1399 	case ROFFT_BODY:
1400 		break;
1401 	default:
1402 		abort();
1403 	}
1404 
1405 	if (FONT_Em == n->norm->Bf.font)
1406 		cattr = "Bf Em";
1407 	else if (FONT_Sy == n->norm->Bf.font)
1408 		cattr = "Bf Sy";
1409 	else if (FONT_Li == n->norm->Bf.font)
1410 		cattr = "Bf Li";
1411 	else
1412 		cattr = "Bf No";
1413 
1414 	/* Cannot use TAG_SPAN because it may contain blocks. */
1415 	print_otag(h, TAG_DIV, "c", cattr);
1416 	return 1;
1417 }
1418 
1419 static int
1420 mdoc_igndelim_pre(MDOC_ARGS)
1421 {
1422 	h->flags |= HTML_IGNDELIM;
1423 	return 1;
1424 }
1425 
1426 static void
1427 mdoc_pf_post(MDOC_ARGS)
1428 {
1429 	if ( ! (n->next == NULL || n->next->flags & NODE_LINE))
1430 		h->flags |= HTML_NOSPACE;
1431 }
1432 
1433 static int
1434 mdoc_rs_pre(MDOC_ARGS)
1435 {
1436 	switch (n->type) {
1437 	case ROFFT_BLOCK:
1438 		if (n->sec == SEC_SEE_ALSO)
1439 			html_close_paragraph(h);
1440 		break;
1441 	case ROFFT_HEAD:
1442 		return 0;
1443 	case ROFFT_BODY:
1444 		if (n->sec == SEC_SEE_ALSO)
1445 			print_otag(h, TAG_P, "c", "Pp");
1446 		print_otag(h, TAG_CITE, "c", "Rs");
1447 		break;
1448 	default:
1449 		abort();
1450 	}
1451 	return 1;
1452 }
1453 
1454 static int
1455 mdoc_no_pre(MDOC_ARGS)
1456 {
1457 	print_otag_id(h, TAG_SPAN, roff_name[n->tok], n);
1458 	return 1;
1459 }
1460 
1461 static int
1462 mdoc_sy_pre(MDOC_ARGS)
1463 {
1464 	print_otag_id(h, TAG_B, "Sy", n);
1465 	return 1;
1466 }
1467 
1468 static int
1469 mdoc_lb_pre(MDOC_ARGS)
1470 {
1471 	if (n->sec == SEC_LIBRARY &&
1472 	    n->flags & NODE_LINE &&
1473 	    roff_node_prev(n) != NULL)
1474 		print_otag(h, TAG_BR, "");
1475 
1476 	print_otag(h, TAG_SPAN, "c", "Lb");
1477 	return 1;
1478 }
1479 
1480 static int
1481 mdoc__x_pre(MDOC_ARGS)
1482 {
1483 	struct roff_node	*nn;
1484 	const char		*cattr;
1485 	enum htmltag		 t;
1486 
1487 	t = TAG_SPAN;
1488 
1489 	switch (n->tok) {
1490 	case MDOC__A:
1491 		cattr = "RsA";
1492 		if ((nn = roff_node_prev(n)) != NULL && nn->tok == MDOC__A &&
1493 		    ((nn = roff_node_next(n)) == NULL || nn->tok != MDOC__A))
1494 			print_text(h, "and");
1495 		break;
1496 	case MDOC__B:
1497 		t = TAG_I;
1498 		cattr = "RsB";
1499 		break;
1500 	case MDOC__C:
1501 		cattr = "RsC";
1502 		break;
1503 	case MDOC__D:
1504 		cattr = "RsD";
1505 		break;
1506 	case MDOC__I:
1507 		t = TAG_I;
1508 		cattr = "RsI";
1509 		break;
1510 	case MDOC__J:
1511 		t = TAG_I;
1512 		cattr = "RsJ";
1513 		break;
1514 	case MDOC__N:
1515 		cattr = "RsN";
1516 		break;
1517 	case MDOC__O:
1518 		cattr = "RsO";
1519 		break;
1520 	case MDOC__P:
1521 		cattr = "RsP";
1522 		break;
1523 	case MDOC__Q:
1524 		cattr = "RsQ";
1525 		break;
1526 	case MDOC__R:
1527 		cattr = "RsR";
1528 		break;
1529 	case MDOC__T:
1530 		cattr = "RsT";
1531 		break;
1532 	case MDOC__U:
1533 		print_otag(h, TAG_A, "ch", "RsU", n->child->string);
1534 		return 1;
1535 	case MDOC__V:
1536 		cattr = "RsV";
1537 		break;
1538 	default:
1539 		abort();
1540 	}
1541 
1542 	print_otag(h, t, "c", cattr);
1543 	return 1;
1544 }
1545 
1546 static void
1547 mdoc__x_post(MDOC_ARGS)
1548 {
1549 	struct roff_node *nn;
1550 
1551 	if (n->tok == MDOC__A &&
1552 	    (nn = roff_node_next(n)) != NULL && nn->tok == MDOC__A &&
1553 	    ((nn = roff_node_next(nn)) == NULL || nn->tok != MDOC__A) &&
1554 	    ((nn = roff_node_prev(n)) == NULL || nn->tok != MDOC__A))
1555 		return;
1556 
1557 	/* TODO: %U */
1558 
1559 	if (n->parent == NULL || n->parent->tok != MDOC_Rs)
1560 		return;
1561 
1562 	h->flags |= HTML_NOSPACE;
1563 	print_text(h, roff_node_next(n) ? "," : ".");
1564 }
1565 
1566 static int
1567 mdoc_bk_pre(MDOC_ARGS)
1568 {
1569 
1570 	switch (n->type) {
1571 	case ROFFT_BLOCK:
1572 		break;
1573 	case ROFFT_HEAD:
1574 		return 0;
1575 	case ROFFT_BODY:
1576 		if (n->parent->args != NULL || n->prev->child == NULL)
1577 			h->flags |= HTML_PREKEEP;
1578 		break;
1579 	default:
1580 		abort();
1581 	}
1582 
1583 	return 1;
1584 }
1585 
1586 static void
1587 mdoc_bk_post(MDOC_ARGS)
1588 {
1589 
1590 	if (n->type == ROFFT_BODY)
1591 		h->flags &= ~(HTML_KEEP | HTML_PREKEEP);
1592 }
1593 
1594 static int
1595 mdoc_quote_pre(MDOC_ARGS)
1596 {
1597 	if (n->type != ROFFT_BODY)
1598 		return 1;
1599 
1600 	switch (n->tok) {
1601 	case MDOC_Ao:
1602 	case MDOC_Aq:
1603 		print_text(h, n->child != NULL && n->child->next == NULL &&
1604 		    n->child->tok == MDOC_Mt ?  "<" : "\\(la");
1605 		break;
1606 	case MDOC_Bro:
1607 	case MDOC_Brq:
1608 		print_text(h, "\\(lC");
1609 		break;
1610 	case MDOC_Bo:
1611 	case MDOC_Bq:
1612 		print_text(h, "\\(lB");
1613 		break;
1614 	case MDOC_Oo:
1615 	case MDOC_Op:
1616 		print_text(h, "\\(lB");
1617 		/*
1618 		 * Give up on semantic markup for now.
1619 		 * We cannot use TAG_SPAN because .Oo may contain blocks.
1620 		 * We cannot use TAG_DIV because we might be in a
1621 		 * phrasing context (like .Dl or .Pp); we cannot
1622 		 * close out a .Pp at this point either because
1623 		 * that would break the line.
1624 		 */
1625 		/* XXX print_otag(h, TAG_???, "c", "Op"); */
1626 		break;
1627 	case MDOC_En:
1628 		if (NULL == n->norm->Es ||
1629 		    NULL == n->norm->Es->child)
1630 			return 1;
1631 		print_text(h, n->norm->Es->child->string);
1632 		break;
1633 	case MDOC_Do:
1634 	case MDOC_Dq:
1635 		print_text(h, "\\(lq");
1636 		break;
1637 	case MDOC_Qo:
1638 	case MDOC_Qq:
1639 		print_text(h, "\"");
1640 		break;
1641 	case MDOC_Po:
1642 	case MDOC_Pq:
1643 		print_text(h, "(");
1644 		break;
1645 	case MDOC_Ql:
1646 		print_text(h, "\\(oq");
1647 		h->flags |= HTML_NOSPACE;
1648 		print_otag(h, TAG_CODE, "c", "Li");
1649 		break;
1650 	case MDOC_So:
1651 	case MDOC_Sq:
1652 		print_text(h, "\\(oq");
1653 		break;
1654 	default:
1655 		abort();
1656 	}
1657 
1658 	h->flags |= HTML_NOSPACE;
1659 	return 1;
1660 }
1661 
1662 static void
1663 mdoc_quote_post(MDOC_ARGS)
1664 {
1665 
1666 	if (n->type != ROFFT_BODY && n->type != ROFFT_ELEM)
1667 		return;
1668 
1669 	h->flags |= HTML_NOSPACE;
1670 
1671 	switch (n->tok) {
1672 	case MDOC_Ao:
1673 	case MDOC_Aq:
1674 		print_text(h, n->child != NULL && n->child->next == NULL &&
1675 		    n->child->tok == MDOC_Mt ?  ">" : "\\(ra");
1676 		break;
1677 	case MDOC_Bro:
1678 	case MDOC_Brq:
1679 		print_text(h, "\\(rC");
1680 		break;
1681 	case MDOC_Oo:
1682 	case MDOC_Op:
1683 	case MDOC_Bo:
1684 	case MDOC_Bq:
1685 		print_text(h, "\\(rB");
1686 		break;
1687 	case MDOC_En:
1688 		if (n->norm->Es == NULL ||
1689 		    n->norm->Es->child == NULL ||
1690 		    n->norm->Es->child->next == NULL)
1691 			h->flags &= ~HTML_NOSPACE;
1692 		else
1693 			print_text(h, n->norm->Es->child->next->string);
1694 		break;
1695 	case MDOC_Do:
1696 	case MDOC_Dq:
1697 		print_text(h, "\\(rq");
1698 		break;
1699 	case MDOC_Qo:
1700 	case MDOC_Qq:
1701 		print_text(h, "\"");
1702 		break;
1703 	case MDOC_Po:
1704 	case MDOC_Pq:
1705 		print_text(h, ")");
1706 		break;
1707 	case MDOC_Ql:
1708 	case MDOC_So:
1709 	case MDOC_Sq:
1710 		print_text(h, "\\(cq");
1711 		break;
1712 	default:
1713 		abort();
1714 	}
1715 }
1716 
1717 static int
1718 mdoc_eo_pre(MDOC_ARGS)
1719 {
1720 
1721 	if (n->type != ROFFT_BODY)
1722 		return 1;
1723 
1724 	if (n->end == ENDBODY_NOT &&
1725 	    n->parent->head->child == NULL &&
1726 	    n->child != NULL &&
1727 	    n->child->end != ENDBODY_NOT)
1728 		print_text(h, "\\&");
1729 	else if (n->end != ENDBODY_NOT ? n->child != NULL :
1730 	    n->parent->head->child != NULL && (n->child != NULL ||
1731 	    (n->parent->tail != NULL && n->parent->tail->child != NULL)))
1732 		h->flags |= HTML_NOSPACE;
1733 	return 1;
1734 }
1735 
1736 static void
1737 mdoc_eo_post(MDOC_ARGS)
1738 {
1739 	int	 body, tail;
1740 
1741 	if (n->type != ROFFT_BODY)
1742 		return;
1743 
1744 	if (n->end != ENDBODY_NOT) {
1745 		h->flags &= ~HTML_NOSPACE;
1746 		return;
1747 	}
1748 
1749 	body = n->child != NULL || n->parent->head->child != NULL;
1750 	tail = n->parent->tail != NULL && n->parent->tail->child != NULL;
1751 
1752 	if (body && tail)
1753 		h->flags |= HTML_NOSPACE;
1754 	else if ( ! tail)
1755 		h->flags &= ~HTML_NOSPACE;
1756 }
1757 
1758 static int
1759 mdoc_abort_pre(MDOC_ARGS)
1760 {
1761 	abort();
1762 }
1763