xref: /openbsd-src/usr.bin/mandoc/mdoc_html.c (revision e5157e49389faebcb42b7237d55fbf096d9c2523)
1 /*	$OpenBSD: mdoc_html.c,v 1.85 2014/11/17 06:44:35 schwarze Exp $ */
2 /*
3  * Copyright (c) 2008-2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
4  * Copyright (c) 2014 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 <ctype.h>
22 #include <stdio.h>
23 #include <stdlib.h>
24 #include <string.h>
25 #include <unistd.h>
26 
27 #include "mandoc.h"
28 #include "mandoc_aux.h"
29 #include "out.h"
30 #include "html.h"
31 #include "mdoc.h"
32 #include "main.h"
33 
34 #define	INDENT		 5
35 
36 #define	MDOC_ARGS	  const struct mdoc_meta *meta, \
37 			  const struct mdoc_node *n, \
38 			  struct html *h
39 
40 #ifndef MIN
41 #define	MIN(a,b)	((/*CONSTCOND*/(a)<(b))?(a):(b))
42 #endif
43 
44 struct	htmlmdoc {
45 	int		(*pre)(MDOC_ARGS);
46 	void		(*post)(MDOC_ARGS);
47 };
48 
49 static	void		  print_mdoc(MDOC_ARGS);
50 static	void		  print_mdoc_head(MDOC_ARGS);
51 static	void		  print_mdoc_node(MDOC_ARGS);
52 static	void		  print_mdoc_nodelist(MDOC_ARGS);
53 static	void		  synopsis_pre(struct html *,
54 				const struct mdoc_node *);
55 
56 static	void		  a2width(const char *, struct roffsu *);
57 
58 static	void		  mdoc_root_post(MDOC_ARGS);
59 static	int		  mdoc_root_pre(MDOC_ARGS);
60 
61 static	void		  mdoc__x_post(MDOC_ARGS);
62 static	int		  mdoc__x_pre(MDOC_ARGS);
63 static	int		  mdoc_ad_pre(MDOC_ARGS);
64 static	int		  mdoc_an_pre(MDOC_ARGS);
65 static	int		  mdoc_ap_pre(MDOC_ARGS);
66 static	int		  mdoc_ar_pre(MDOC_ARGS);
67 static	int		  mdoc_bd_pre(MDOC_ARGS);
68 static	int		  mdoc_bf_pre(MDOC_ARGS);
69 static	void		  mdoc_bk_post(MDOC_ARGS);
70 static	int		  mdoc_bk_pre(MDOC_ARGS);
71 static	int		  mdoc_bl_pre(MDOC_ARGS);
72 static	int		  mdoc_bt_pre(MDOC_ARGS);
73 static	int		  mdoc_bx_pre(MDOC_ARGS);
74 static	int		  mdoc_cd_pre(MDOC_ARGS);
75 static	int		  mdoc_d1_pre(MDOC_ARGS);
76 static	int		  mdoc_dv_pre(MDOC_ARGS);
77 static	int		  mdoc_fa_pre(MDOC_ARGS);
78 static	int		  mdoc_fd_pre(MDOC_ARGS);
79 static	int		  mdoc_fl_pre(MDOC_ARGS);
80 static	int		  mdoc_fn_pre(MDOC_ARGS);
81 static	int		  mdoc_ft_pre(MDOC_ARGS);
82 static	int		  mdoc_em_pre(MDOC_ARGS);
83 static	int		  mdoc_er_pre(MDOC_ARGS);
84 static	int		  mdoc_ev_pre(MDOC_ARGS);
85 static	int		  mdoc_ex_pre(MDOC_ARGS);
86 static	void		  mdoc_fo_post(MDOC_ARGS);
87 static	int		  mdoc_fo_pre(MDOC_ARGS);
88 static	int		  mdoc_ic_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_li_pre(MDOC_ARGS);
94 static	int		  mdoc_lk_pre(MDOC_ARGS);
95 static	int		  mdoc_mt_pre(MDOC_ARGS);
96 static	int		  mdoc_ms_pre(MDOC_ARGS);
97 static	int		  mdoc_nd_pre(MDOC_ARGS);
98 static	int		  mdoc_nm_pre(MDOC_ARGS);
99 static	int		  mdoc_no_pre(MDOC_ARGS);
100 static	int		  mdoc_ns_pre(MDOC_ARGS);
101 static	int		  mdoc_pa_pre(MDOC_ARGS);
102 static	void		  mdoc_pf_post(MDOC_ARGS);
103 static	int		  mdoc_pp_pre(MDOC_ARGS);
104 static	void		  mdoc_quote_post(MDOC_ARGS);
105 static	int		  mdoc_quote_pre(MDOC_ARGS);
106 static	int		  mdoc_rs_pre(MDOC_ARGS);
107 static	int		  mdoc_rv_pre(MDOC_ARGS);
108 static	int		  mdoc_sh_pre(MDOC_ARGS);
109 static	int		  mdoc_skip_pre(MDOC_ARGS);
110 static	int		  mdoc_sm_pre(MDOC_ARGS);
111 static	int		  mdoc_sp_pre(MDOC_ARGS);
112 static	int		  mdoc_ss_pre(MDOC_ARGS);
113 static	int		  mdoc_sx_pre(MDOC_ARGS);
114 static	int		  mdoc_sy_pre(MDOC_ARGS);
115 static	int		  mdoc_ud_pre(MDOC_ARGS);
116 static	int		  mdoc_va_pre(MDOC_ARGS);
117 static	int		  mdoc_vt_pre(MDOC_ARGS);
118 static	int		  mdoc_xr_pre(MDOC_ARGS);
119 static	int		  mdoc_xx_pre(MDOC_ARGS);
120 
121 static	const struct htmlmdoc mdocs[MDOC_MAX] = {
122 	{mdoc_ap_pre, NULL}, /* Ap */
123 	{NULL, NULL}, /* Dd */
124 	{NULL, NULL}, /* Dt */
125 	{NULL, NULL}, /* Os */
126 	{mdoc_sh_pre, NULL }, /* Sh */
127 	{mdoc_ss_pre, NULL }, /* Ss */
128 	{mdoc_pp_pre, NULL}, /* Pp */
129 	{mdoc_d1_pre, NULL}, /* D1 */
130 	{mdoc_d1_pre, NULL}, /* Dl */
131 	{mdoc_bd_pre, NULL}, /* Bd */
132 	{NULL, NULL}, /* Ed */
133 	{mdoc_bl_pre, NULL}, /* Bl */
134 	{NULL, NULL}, /* El */
135 	{mdoc_it_pre, NULL}, /* It */
136 	{mdoc_ad_pre, NULL}, /* Ad */
137 	{mdoc_an_pre, NULL}, /* An */
138 	{mdoc_ar_pre, NULL}, /* Ar */
139 	{mdoc_cd_pre, NULL}, /* Cd */
140 	{mdoc_fl_pre, NULL}, /* Cm */
141 	{mdoc_dv_pre, NULL}, /* Dv */
142 	{mdoc_er_pre, NULL}, /* Er */
143 	{mdoc_ev_pre, NULL}, /* Ev */
144 	{mdoc_ex_pre, NULL}, /* Ex */
145 	{mdoc_fa_pre, NULL}, /* Fa */
146 	{mdoc_fd_pre, NULL}, /* Fd */
147 	{mdoc_fl_pre, NULL}, /* Fl */
148 	{mdoc_fn_pre, NULL}, /* Fn */
149 	{mdoc_ft_pre, NULL}, /* Ft */
150 	{mdoc_ic_pre, NULL}, /* Ic */
151 	{mdoc_in_pre, NULL}, /* In */
152 	{mdoc_li_pre, NULL}, /* Li */
153 	{mdoc_nd_pre, NULL}, /* Nd */
154 	{mdoc_nm_pre, NULL}, /* Nm */
155 	{mdoc_quote_pre, mdoc_quote_post}, /* Op */
156 	{mdoc_ft_pre, NULL}, /* Ot */
157 	{mdoc_pa_pre, NULL}, /* Pa */
158 	{mdoc_rv_pre, NULL}, /* Rv */
159 	{NULL, NULL}, /* St */
160 	{mdoc_va_pre, NULL}, /* Va */
161 	{mdoc_vt_pre, NULL}, /* Vt */
162 	{mdoc_xr_pre, NULL}, /* Xr */
163 	{mdoc__x_pre, mdoc__x_post}, /* %A */
164 	{mdoc__x_pre, mdoc__x_post}, /* %B */
165 	{mdoc__x_pre, mdoc__x_post}, /* %D */
166 	{mdoc__x_pre, mdoc__x_post}, /* %I */
167 	{mdoc__x_pre, mdoc__x_post}, /* %J */
168 	{mdoc__x_pre, mdoc__x_post}, /* %N */
169 	{mdoc__x_pre, mdoc__x_post}, /* %O */
170 	{mdoc__x_pre, mdoc__x_post}, /* %P */
171 	{mdoc__x_pre, mdoc__x_post}, /* %R */
172 	{mdoc__x_pre, mdoc__x_post}, /* %T */
173 	{mdoc__x_pre, mdoc__x_post}, /* %V */
174 	{NULL, NULL}, /* Ac */
175 	{mdoc_quote_pre, mdoc_quote_post}, /* Ao */
176 	{mdoc_quote_pre, mdoc_quote_post}, /* Aq */
177 	{NULL, NULL}, /* At */
178 	{NULL, NULL}, /* Bc */
179 	{mdoc_bf_pre, NULL}, /* Bf */
180 	{mdoc_quote_pre, mdoc_quote_post}, /* Bo */
181 	{mdoc_quote_pre, mdoc_quote_post}, /* Bq */
182 	{mdoc_xx_pre, NULL}, /* Bsx */
183 	{mdoc_bx_pre, NULL}, /* Bx */
184 	{NULL, NULL}, /* Db */
185 	{NULL, NULL}, /* Dc */
186 	{mdoc_quote_pre, mdoc_quote_post}, /* Do */
187 	{mdoc_quote_pre, mdoc_quote_post}, /* Dq */
188 	{NULL, NULL}, /* Ec */ /* FIXME: no space */
189 	{NULL, NULL}, /* Ef */
190 	{mdoc_em_pre, NULL}, /* Em */
191 	{mdoc_quote_pre, mdoc_quote_post}, /* Eo */
192 	{mdoc_xx_pre, NULL}, /* Fx */
193 	{mdoc_ms_pre, NULL}, /* Ms */
194 	{mdoc_no_pre, NULL}, /* No */
195 	{mdoc_ns_pre, NULL}, /* Ns */
196 	{mdoc_xx_pre, NULL}, /* Nx */
197 	{mdoc_xx_pre, NULL}, /* Ox */
198 	{NULL, NULL}, /* Pc */
199 	{mdoc_igndelim_pre, mdoc_pf_post}, /* Pf */
200 	{mdoc_quote_pre, mdoc_quote_post}, /* Po */
201 	{mdoc_quote_pre, mdoc_quote_post}, /* Pq */
202 	{NULL, NULL}, /* Qc */
203 	{mdoc_quote_pre, mdoc_quote_post}, /* Ql */
204 	{mdoc_quote_pre, mdoc_quote_post}, /* Qo */
205 	{mdoc_quote_pre, mdoc_quote_post}, /* Qq */
206 	{NULL, NULL}, /* Re */
207 	{mdoc_rs_pre, NULL}, /* Rs */
208 	{NULL, NULL}, /* Sc */
209 	{mdoc_quote_pre, mdoc_quote_post}, /* So */
210 	{mdoc_quote_pre, mdoc_quote_post}, /* Sq */
211 	{mdoc_sm_pre, NULL}, /* Sm */
212 	{mdoc_sx_pre, NULL}, /* Sx */
213 	{mdoc_sy_pre, NULL}, /* Sy */
214 	{NULL, NULL}, /* Tn */
215 	{mdoc_xx_pre, NULL}, /* Ux */
216 	{NULL, NULL}, /* Xc */
217 	{NULL, NULL}, /* Xo */
218 	{mdoc_fo_pre, mdoc_fo_post}, /* Fo */
219 	{NULL, NULL}, /* Fc */
220 	{mdoc_quote_pre, mdoc_quote_post}, /* Oo */
221 	{NULL, NULL}, /* Oc */
222 	{mdoc_bk_pre, mdoc_bk_post}, /* Bk */
223 	{NULL, NULL}, /* Ek */
224 	{mdoc_bt_pre, NULL}, /* Bt */
225 	{NULL, NULL}, /* Hf */
226 	{mdoc_em_pre, NULL}, /* Fr */
227 	{mdoc_ud_pre, NULL}, /* Ud */
228 	{mdoc_lb_pre, NULL}, /* Lb */
229 	{mdoc_pp_pre, NULL}, /* Lp */
230 	{mdoc_lk_pre, NULL}, /* Lk */
231 	{mdoc_mt_pre, NULL}, /* Mt */
232 	{mdoc_quote_pre, mdoc_quote_post}, /* Brq */
233 	{mdoc_quote_pre, mdoc_quote_post}, /* Bro */
234 	{NULL, NULL}, /* Brc */
235 	{mdoc__x_pre, mdoc__x_post}, /* %C */
236 	{mdoc_skip_pre, NULL}, /* Es */
237 	{mdoc_quote_pre, mdoc_quote_post}, /* En */
238 	{mdoc_xx_pre, NULL}, /* Dx */
239 	{mdoc__x_pre, mdoc__x_post}, /* %Q */
240 	{mdoc_sp_pre, NULL}, /* br */
241 	{mdoc_sp_pre, NULL}, /* sp */
242 	{mdoc__x_pre, mdoc__x_post}, /* %U */
243 	{NULL, NULL}, /* Ta */
244 	{mdoc_skip_pre, NULL}, /* ll */
245 };
246 
247 static	const char * const lists[LIST_MAX] = {
248 	NULL,
249 	"list-bul",
250 	"list-col",
251 	"list-dash",
252 	"list-diag",
253 	"list-enum",
254 	"list-hang",
255 	"list-hyph",
256 	"list-inset",
257 	"list-item",
258 	"list-ohang",
259 	"list-tag"
260 };
261 
262 
263 void
264 html_mdoc(void *arg, const struct mdoc *mdoc)
265 {
266 
267 	print_mdoc(mdoc_meta(mdoc), mdoc_node(mdoc),
268 	    (struct html *)arg);
269 	putchar('\n');
270 }
271 
272 /*
273  * Calculate the scaling unit passed in a `-width' argument.  This uses
274  * either a native scaling unit (e.g., 1i, 2m) or the string length of
275  * the value.
276  */
277 static void
278 a2width(const char *p, struct roffsu *su)
279 {
280 
281 	if ( ! a2roffsu(p, su, SCALE_MAX)) {
282 		su->unit = SCALE_EN;
283 		su->scale = html_strlen(p);
284 	}
285 }
286 
287 /*
288  * See the same function in mdoc_term.c for documentation.
289  */
290 static void
291 synopsis_pre(struct html *h, const struct mdoc_node *n)
292 {
293 
294 	if (NULL == n->prev || ! (MDOC_SYNPRETTY & n->flags))
295 		return;
296 
297 	if (n->prev->tok == n->tok &&
298 	    MDOC_Fo != n->tok &&
299 	    MDOC_Ft != n->tok &&
300 	    MDOC_Fn != n->tok) {
301 		print_otag(h, TAG_BR, 0, NULL);
302 		return;
303 	}
304 
305 	switch (n->prev->tok) {
306 	case MDOC_Fd:
307 		/* FALLTHROUGH */
308 	case MDOC_Fn:
309 		/* FALLTHROUGH */
310 	case MDOC_Fo:
311 		/* FALLTHROUGH */
312 	case MDOC_In:
313 		/* FALLTHROUGH */
314 	case MDOC_Vt:
315 		print_paragraph(h);
316 		break;
317 	case MDOC_Ft:
318 		if (MDOC_Fn != n->tok && MDOC_Fo != n->tok) {
319 			print_paragraph(h);
320 			break;
321 		}
322 		/* FALLTHROUGH */
323 	default:
324 		print_otag(h, TAG_BR, 0, NULL);
325 		break;
326 	}
327 }
328 
329 static void
330 print_mdoc(MDOC_ARGS)
331 {
332 	struct tag	*t, *tt;
333 	struct htmlpair	 tag;
334 
335 	PAIR_CLASS_INIT(&tag, "mandoc");
336 
337 	if ( ! (HTML_FRAGMENT & h->oflags)) {
338 		print_gen_decls(h);
339 		t = print_otag(h, TAG_HTML, 0, NULL);
340 		tt = print_otag(h, TAG_HEAD, 0, NULL);
341 		print_mdoc_head(meta, n, h);
342 		print_tagq(h, tt);
343 		print_otag(h, TAG_BODY, 0, NULL);
344 		print_otag(h, TAG_DIV, 1, &tag);
345 	} else
346 		t = print_otag(h, TAG_DIV, 1, &tag);
347 
348 	print_mdoc_nodelist(meta, n, h);
349 	print_tagq(h, t);
350 }
351 
352 static void
353 print_mdoc_head(MDOC_ARGS)
354 {
355 
356 	print_gen_head(h);
357 	bufinit(h);
358 	bufcat(h, meta->title);
359 	if (meta->msec)
360 		bufcat_fmt(h, "(%s)", meta->msec);
361 	if (meta->arch)
362 		bufcat_fmt(h, " (%s)", meta->arch);
363 
364 	print_otag(h, TAG_TITLE, 0, NULL);
365 	print_text(h, h->buf);
366 }
367 
368 static void
369 print_mdoc_nodelist(MDOC_ARGS)
370 {
371 
372 	print_mdoc_node(meta, n, h);
373 	if (n->next)
374 		print_mdoc_nodelist(meta, n->next, h);
375 }
376 
377 static void
378 print_mdoc_node(MDOC_ARGS)
379 {
380 	int		 child;
381 	struct tag	*t;
382 
383 	child = 1;
384 	t = h->tags.head;
385 
386 	switch (n->type) {
387 	case MDOC_ROOT:
388 		child = mdoc_root_pre(meta, n, h);
389 		break;
390 	case MDOC_TEXT:
391 		/* No tables in this mode... */
392 		assert(NULL == h->tblt);
393 
394 		/*
395 		 * Make sure that if we're in a literal mode already
396 		 * (i.e., within a <PRE>) don't print the newline.
397 		 */
398 		if (' ' == *n->string && MDOC_LINE & n->flags)
399 			if ( ! (HTML_LITERAL & h->flags))
400 				print_otag(h, TAG_BR, 0, NULL);
401 		if (MDOC_DELIMC & n->flags)
402 			h->flags |= HTML_NOSPACE;
403 		print_text(h, n->string);
404 		if (MDOC_DELIMO & n->flags)
405 			h->flags |= HTML_NOSPACE;
406 		return;
407 	case MDOC_EQN:
408 		print_eqn(h, n->eqn);
409 		break;
410 	case MDOC_TBL:
411 		/*
412 		 * This will take care of initialising all of the table
413 		 * state data for the first table, then tearing it down
414 		 * for the last one.
415 		 */
416 		print_tbl(h, n->span);
417 		return;
418 	default:
419 		/*
420 		 * Close out the current table, if it's open, and unset
421 		 * the "meta" table state.  This will be reopened on the
422 		 * next table element.
423 		 */
424 		if (h->tblt) {
425 			print_tblclose(h);
426 			t = h->tags.head;
427 		}
428 
429 		assert(NULL == h->tblt);
430 		if (mdocs[n->tok].pre && ENDBODY_NOT == n->end)
431 			child = (*mdocs[n->tok].pre)(meta, n, h);
432 		break;
433 	}
434 
435 	if (HTML_KEEP & h->flags) {
436 		if (n->prev ? (n->prev->lastline != n->line) :
437 		    (n->parent && n->parent->line != n->line)) {
438 			h->flags &= ~HTML_KEEP;
439 			h->flags |= HTML_PREKEEP;
440 		}
441 	}
442 
443 	if (child && n->child)
444 		print_mdoc_nodelist(meta, n->child, h);
445 
446 	print_stagq(h, t);
447 
448 	switch (n->type) {
449 	case MDOC_ROOT:
450 		mdoc_root_post(meta, n, h);
451 		break;
452 	case MDOC_EQN:
453 		break;
454 	default:
455 		if (mdocs[n->tok].post && ENDBODY_NOT == n->end)
456 			(*mdocs[n->tok].post)(meta, n, h);
457 		break;
458 	}
459 }
460 
461 static void
462 mdoc_root_post(MDOC_ARGS)
463 {
464 	struct htmlpair	 tag;
465 	struct tag	*t, *tt;
466 
467 	PAIR_CLASS_INIT(&tag, "foot");
468 	t = print_otag(h, TAG_TABLE, 1, &tag);
469 
470 	print_otag(h, TAG_TBODY, 0, NULL);
471 
472 	tt = print_otag(h, TAG_TR, 0, NULL);
473 
474 	PAIR_CLASS_INIT(&tag, "foot-date");
475 	print_otag(h, TAG_TD, 1, &tag);
476 	print_text(h, meta->date);
477 	print_stagq(h, tt);
478 
479 	PAIR_CLASS_INIT(&tag, "foot-os");
480 	print_otag(h, TAG_TD, 1, &tag);
481 	print_text(h, meta->os);
482 	print_tagq(h, t);
483 }
484 
485 static int
486 mdoc_root_pre(MDOC_ARGS)
487 {
488 	struct htmlpair	 tag;
489 	struct tag	*t, *tt;
490 	char		*volume, *title;
491 
492 	if (NULL == meta->arch)
493 		volume = mandoc_strdup(meta->vol);
494 	else
495 		mandoc_asprintf(&volume, "%s (%s)",
496 		    meta->vol, meta->arch);
497 
498 	if (NULL == meta->msec)
499 		title = mandoc_strdup(meta->title);
500 	else
501 		mandoc_asprintf(&title, "%s(%s)",
502 		    meta->title, meta->msec);
503 
504 	PAIR_CLASS_INIT(&tag, "head");
505 	t = print_otag(h, TAG_TABLE, 1, &tag);
506 
507 	print_otag(h, TAG_TBODY, 0, NULL);
508 
509 	tt = print_otag(h, TAG_TR, 0, NULL);
510 
511 	PAIR_CLASS_INIT(&tag, "head-ltitle");
512 	print_otag(h, TAG_TD, 1, &tag);
513 	print_text(h, title);
514 	print_stagq(h, tt);
515 
516 	PAIR_CLASS_INIT(&tag, "head-vol");
517 	print_otag(h, TAG_TD, 1, &tag);
518 	print_text(h, volume);
519 	print_stagq(h, tt);
520 
521 	PAIR_CLASS_INIT(&tag, "head-rtitle");
522 	print_otag(h, TAG_TD, 1, &tag);
523 	print_text(h, title);
524 	print_tagq(h, t);
525 
526 	free(title);
527 	free(volume);
528 	return(1);
529 }
530 
531 static int
532 mdoc_sh_pre(MDOC_ARGS)
533 {
534 	struct htmlpair	 tag;
535 
536 	switch (n->type) {
537 	case MDOC_BLOCK:
538 		PAIR_CLASS_INIT(&tag, "section");
539 		print_otag(h, TAG_DIV, 1, &tag);
540 		return(1);
541 	case MDOC_BODY:
542 		if (n->sec == SEC_AUTHORS)
543 			h->flags &= ~(HTML_SPLIT|HTML_NOSPLIT);
544 		return(1);
545 	default:
546 		break;
547 	}
548 
549 	bufinit(h);
550 	bufcat(h, "x");
551 
552 	for (n = n->child; n && MDOC_TEXT == n->type; ) {
553 		bufcat_id(h, n->string);
554 		if (NULL != (n = n->next))
555 			bufcat_id(h, " ");
556 	}
557 
558 	if (NULL == n) {
559 		PAIR_ID_INIT(&tag, h->buf);
560 		print_otag(h, TAG_H1, 1, &tag);
561 	} else
562 		print_otag(h, TAG_H1, 0, NULL);
563 
564 	return(1);
565 }
566 
567 static int
568 mdoc_ss_pre(MDOC_ARGS)
569 {
570 	struct htmlpair	 tag;
571 
572 	if (MDOC_BLOCK == n->type) {
573 		PAIR_CLASS_INIT(&tag, "subsection");
574 		print_otag(h, TAG_DIV, 1, &tag);
575 		return(1);
576 	} else if (MDOC_BODY == n->type)
577 		return(1);
578 
579 	bufinit(h);
580 	bufcat(h, "x");
581 
582 	for (n = n->child; n && MDOC_TEXT == n->type; ) {
583 		bufcat_id(h, n->string);
584 		if (NULL != (n = n->next))
585 			bufcat_id(h, " ");
586 	}
587 
588 	if (NULL == n) {
589 		PAIR_ID_INIT(&tag, h->buf);
590 		print_otag(h, TAG_H2, 1, &tag);
591 	} else
592 		print_otag(h, TAG_H2, 0, NULL);
593 
594 	return(1);
595 }
596 
597 static int
598 mdoc_fl_pre(MDOC_ARGS)
599 {
600 	struct htmlpair	 tag;
601 
602 	PAIR_CLASS_INIT(&tag, "flag");
603 	print_otag(h, TAG_B, 1, &tag);
604 
605 	/* `Cm' has no leading hyphen. */
606 
607 	if (MDOC_Cm == n->tok)
608 		return(1);
609 
610 	print_text(h, "\\-");
611 
612 	if ( ! (n->nchild == 0 &&
613 	    (n->next == NULL ||
614 	     n->next->type == MDOC_TEXT ||
615 	     n->next->flags & MDOC_LINE)))
616 		h->flags |= HTML_NOSPACE;
617 
618 	return(1);
619 }
620 
621 static int
622 mdoc_nd_pre(MDOC_ARGS)
623 {
624 	struct htmlpair	 tag;
625 
626 	if (MDOC_BODY != n->type)
627 		return(1);
628 
629 	/* XXX: this tag in theory can contain block elements. */
630 
631 	print_text(h, "\\(em");
632 	PAIR_CLASS_INIT(&tag, "desc");
633 	print_otag(h, TAG_SPAN, 1, &tag);
634 	return(1);
635 }
636 
637 static int
638 mdoc_nm_pre(MDOC_ARGS)
639 {
640 	struct htmlpair	 tag;
641 	struct roffsu	 su;
642 	int		 len;
643 
644 	switch (n->type) {
645 	case MDOC_ELEM:
646 		synopsis_pre(h, n);
647 		PAIR_CLASS_INIT(&tag, "name");
648 		print_otag(h, TAG_B, 1, &tag);
649 		if (NULL == n->child && meta->name)
650 			print_text(h, meta->name);
651 		return(1);
652 	case MDOC_HEAD:
653 		print_otag(h, TAG_TD, 0, NULL);
654 		if (NULL == n->child && meta->name)
655 			print_text(h, meta->name);
656 		return(1);
657 	case MDOC_BODY:
658 		print_otag(h, TAG_TD, 0, NULL);
659 		return(1);
660 	default:
661 		break;
662 	}
663 
664 	synopsis_pre(h, n);
665 	PAIR_CLASS_INIT(&tag, "synopsis");
666 	print_otag(h, TAG_TABLE, 1, &tag);
667 
668 	for (len = 0, n = n->child; n; n = n->next)
669 		if (MDOC_TEXT == n->type)
670 			len += html_strlen(n->string);
671 
672 	if (0 == len && meta->name)
673 		len = html_strlen(meta->name);
674 
675 	SCALE_HS_INIT(&su, len);
676 	bufinit(h);
677 	bufcat_su(h, "width", &su);
678 	PAIR_STYLE_INIT(&tag, h);
679 	print_otag(h, TAG_COL, 1, &tag);
680 	print_otag(h, TAG_COL, 0, NULL);
681 	print_otag(h, TAG_TBODY, 0, NULL);
682 	print_otag(h, TAG_TR, 0, NULL);
683 	return(1);
684 }
685 
686 static int
687 mdoc_xr_pre(MDOC_ARGS)
688 {
689 	struct htmlpair	 tag[2];
690 
691 	if (NULL == n->child)
692 		return(0);
693 
694 	PAIR_CLASS_INIT(&tag[0], "link-man");
695 
696 	if (h->base_man) {
697 		buffmt_man(h, n->child->string,
698 		    n->child->next ?
699 		    n->child->next->string : NULL);
700 		PAIR_HREF_INIT(&tag[1], h->buf);
701 		print_otag(h, TAG_A, 2, tag);
702 	} else
703 		print_otag(h, TAG_A, 1, tag);
704 
705 	n = n->child;
706 	print_text(h, n->string);
707 
708 	if (NULL == (n = n->next))
709 		return(0);
710 
711 	h->flags |= HTML_NOSPACE;
712 	print_text(h, "(");
713 	h->flags |= HTML_NOSPACE;
714 	print_text(h, n->string);
715 	h->flags |= HTML_NOSPACE;
716 	print_text(h, ")");
717 	return(0);
718 }
719 
720 static int
721 mdoc_ns_pre(MDOC_ARGS)
722 {
723 
724 	if ( ! (MDOC_LINE & n->flags))
725 		h->flags |= HTML_NOSPACE;
726 	return(1);
727 }
728 
729 static int
730 mdoc_ar_pre(MDOC_ARGS)
731 {
732 	struct htmlpair tag;
733 
734 	PAIR_CLASS_INIT(&tag, "arg");
735 	print_otag(h, TAG_I, 1, &tag);
736 	return(1);
737 }
738 
739 static int
740 mdoc_xx_pre(MDOC_ARGS)
741 {
742 	const char	*pp;
743 	struct htmlpair	 tag;
744 	int		 flags;
745 
746 	switch (n->tok) {
747 	case MDOC_Bsx:
748 		pp = "BSD/OS";
749 		break;
750 	case MDOC_Dx:
751 		pp = "DragonFly";
752 		break;
753 	case MDOC_Fx:
754 		pp = "FreeBSD";
755 		break;
756 	case MDOC_Nx:
757 		pp = "NetBSD";
758 		break;
759 	case MDOC_Ox:
760 		pp = "OpenBSD";
761 		break;
762 	case MDOC_Ux:
763 		pp = "UNIX";
764 		break;
765 	default:
766 		return(1);
767 	}
768 
769 	PAIR_CLASS_INIT(&tag, "unix");
770 	print_otag(h, TAG_SPAN, 1, &tag);
771 
772 	print_text(h, pp);
773 	if (n->child) {
774 		flags = h->flags;
775 		h->flags |= HTML_KEEP;
776 		print_text(h, n->child->string);
777 		h->flags = flags;
778 	}
779 	return(0);
780 }
781 
782 static int
783 mdoc_bx_pre(MDOC_ARGS)
784 {
785 	struct htmlpair	 tag;
786 
787 	PAIR_CLASS_INIT(&tag, "unix");
788 	print_otag(h, TAG_SPAN, 1, &tag);
789 
790 	if (NULL != (n = n->child)) {
791 		print_text(h, n->string);
792 		h->flags |= HTML_NOSPACE;
793 		print_text(h, "BSD");
794 	} else {
795 		print_text(h, "BSD");
796 		return(0);
797 	}
798 
799 	if (NULL != (n = n->next)) {
800 		h->flags |= HTML_NOSPACE;
801 		print_text(h, "-");
802 		h->flags |= HTML_NOSPACE;
803 		print_text(h, n->string);
804 	}
805 
806 	return(0);
807 }
808 
809 static int
810 mdoc_it_pre(MDOC_ARGS)
811 {
812 	struct roffsu	 su;
813 	enum mdoc_list	 type;
814 	struct htmlpair	 tag[2];
815 	const struct mdoc_node *bl;
816 
817 	bl = n->parent;
818 	while (bl && MDOC_Bl != bl->tok)
819 		bl = bl->parent;
820 
821 	assert(bl);
822 
823 	type = bl->norm->Bl.type;
824 
825 	assert(lists[type]);
826 	PAIR_CLASS_INIT(&tag[0], lists[type]);
827 
828 	bufinit(h);
829 
830 	if (MDOC_HEAD == n->type) {
831 		switch (type) {
832 		case LIST_bullet:
833 			/* FALLTHROUGH */
834 		case LIST_dash:
835 			/* FALLTHROUGH */
836 		case LIST_item:
837 			/* FALLTHROUGH */
838 		case LIST_hyphen:
839 			/* FALLTHROUGH */
840 		case LIST_enum:
841 			return(0);
842 		case LIST_diag:
843 			/* FALLTHROUGH */
844 		case LIST_hang:
845 			/* FALLTHROUGH */
846 		case LIST_inset:
847 			/* FALLTHROUGH */
848 		case LIST_ohang:
849 			/* FALLTHROUGH */
850 		case LIST_tag:
851 			SCALE_VS_INIT(&su, ! bl->norm->Bl.comp);
852 			bufcat_su(h, "margin-top", &su);
853 			PAIR_STYLE_INIT(&tag[1], h);
854 			print_otag(h, TAG_DT, 2, tag);
855 			if (LIST_diag != type)
856 				break;
857 			PAIR_CLASS_INIT(&tag[0], "diag");
858 			print_otag(h, TAG_B, 1, tag);
859 			break;
860 		case LIST_column:
861 			break;
862 		default:
863 			break;
864 		}
865 	} else if (MDOC_BODY == n->type) {
866 		switch (type) {
867 		case LIST_bullet:
868 			/* FALLTHROUGH */
869 		case LIST_hyphen:
870 			/* FALLTHROUGH */
871 		case LIST_dash:
872 			/* FALLTHROUGH */
873 		case LIST_enum:
874 			/* FALLTHROUGH */
875 		case LIST_item:
876 			SCALE_VS_INIT(&su, ! bl->norm->Bl.comp);
877 			bufcat_su(h, "margin-top", &su);
878 			PAIR_STYLE_INIT(&tag[1], h);
879 			print_otag(h, TAG_LI, 2, tag);
880 			break;
881 		case LIST_diag:
882 			/* FALLTHROUGH */
883 		case LIST_hang:
884 			/* FALLTHROUGH */
885 		case LIST_inset:
886 			/* FALLTHROUGH */
887 		case LIST_ohang:
888 			/* FALLTHROUGH */
889 		case LIST_tag:
890 			if (NULL == bl->norm->Bl.width) {
891 				print_otag(h, TAG_DD, 1, tag);
892 				break;
893 			}
894 			a2width(bl->norm->Bl.width, &su);
895 			bufcat_su(h, "margin-left", &su);
896 			PAIR_STYLE_INIT(&tag[1], h);
897 			print_otag(h, TAG_DD, 2, tag);
898 			break;
899 		case LIST_column:
900 			SCALE_VS_INIT(&su, ! bl->norm->Bl.comp);
901 			bufcat_su(h, "margin-top", &su);
902 			PAIR_STYLE_INIT(&tag[1], h);
903 			print_otag(h, TAG_TD, 2, tag);
904 			break;
905 		default:
906 			break;
907 		}
908 	} else {
909 		switch (type) {
910 		case LIST_column:
911 			print_otag(h, TAG_TR, 1, tag);
912 			break;
913 		default:
914 			break;
915 		}
916 	}
917 
918 	return(1);
919 }
920 
921 static int
922 mdoc_bl_pre(MDOC_ARGS)
923 {
924 	int		 i;
925 	struct htmlpair	 tag[3];
926 	struct roffsu	 su;
927 	char		 buf[BUFSIZ];
928 
929 	if (MDOC_BODY == n->type) {
930 		if (LIST_column == n->norm->Bl.type)
931 			print_otag(h, TAG_TBODY, 0, NULL);
932 		return(1);
933 	}
934 
935 	if (MDOC_HEAD == n->type) {
936 		if (LIST_column != n->norm->Bl.type)
937 			return(0);
938 
939 		/*
940 		 * For each column, print out the <COL> tag with our
941 		 * suggested width.  The last column gets min-width, as
942 		 * in terminal mode it auto-sizes to the width of the
943 		 * screen and we want to preserve that behaviour.
944 		 */
945 
946 		for (i = 0; i < (int)n->norm->Bl.ncols; i++) {
947 			bufinit(h);
948 			a2width(n->norm->Bl.cols[i], &su);
949 			if (i < (int)n->norm->Bl.ncols - 1)
950 				bufcat_su(h, "width", &su);
951 			else
952 				bufcat_su(h, "min-width", &su);
953 			PAIR_STYLE_INIT(&tag[0], h);
954 			print_otag(h, TAG_COL, 1, tag);
955 		}
956 
957 		return(0);
958 	}
959 
960 	SCALE_VS_INIT(&su, 0);
961 	bufinit(h);
962 	bufcat_su(h, "margin-top", &su);
963 	bufcat_su(h, "margin-bottom", &su);
964 	PAIR_STYLE_INIT(&tag[0], h);
965 
966 	assert(lists[n->norm->Bl.type]);
967 	(void)strlcpy(buf, "list ", BUFSIZ);
968 	(void)strlcat(buf, lists[n->norm->Bl.type], BUFSIZ);
969 	PAIR_INIT(&tag[1], ATTR_CLASS, buf);
970 
971 	/* Set the block's left-hand margin. */
972 
973 	if (n->norm->Bl.offs) {
974 		a2width(n->norm->Bl.offs, &su);
975 		bufcat_su(h, "margin-left", &su);
976 	}
977 
978 	switch (n->norm->Bl.type) {
979 	case LIST_bullet:
980 		/* FALLTHROUGH */
981 	case LIST_dash:
982 		/* FALLTHROUGH */
983 	case LIST_hyphen:
984 		/* FALLTHROUGH */
985 	case LIST_item:
986 		print_otag(h, TAG_UL, 2, tag);
987 		break;
988 	case LIST_enum:
989 		print_otag(h, TAG_OL, 2, tag);
990 		break;
991 	case LIST_diag:
992 		/* FALLTHROUGH */
993 	case LIST_hang:
994 		/* FALLTHROUGH */
995 	case LIST_inset:
996 		/* FALLTHROUGH */
997 	case LIST_ohang:
998 		/* FALLTHROUGH */
999 	case LIST_tag:
1000 		print_otag(h, TAG_DL, 2, tag);
1001 		break;
1002 	case LIST_column:
1003 		print_otag(h, TAG_TABLE, 2, tag);
1004 		break;
1005 	default:
1006 		abort();
1007 		/* NOTREACHED */
1008 	}
1009 
1010 	return(1);
1011 }
1012 
1013 static int
1014 mdoc_ex_pre(MDOC_ARGS)
1015 {
1016 	struct tag	*t;
1017 	struct htmlpair	 tag;
1018 	int		 nchild;
1019 
1020 	if (n->prev)
1021 		print_otag(h, TAG_BR, 0, NULL);
1022 
1023 	PAIR_CLASS_INIT(&tag, "utility");
1024 
1025 	print_text(h, "The");
1026 
1027 	nchild = n->nchild;
1028 	for (n = n->child; n; n = n->next) {
1029 		assert(MDOC_TEXT == n->type);
1030 
1031 		t = print_otag(h, TAG_B, 1, &tag);
1032 		print_text(h, n->string);
1033 		print_tagq(h, t);
1034 
1035 		if (nchild > 2 && n->next) {
1036 			h->flags |= HTML_NOSPACE;
1037 			print_text(h, ",");
1038 		}
1039 
1040 		if (n->next && NULL == n->next->next)
1041 			print_text(h, "and");
1042 	}
1043 
1044 	if (nchild > 1)
1045 		print_text(h, "utilities exit\\~0");
1046 	else
1047 		print_text(h, "utility exits\\~0");
1048 
1049 	print_text(h, "on success, and\\~>0 if an error occurs.");
1050 	return(0);
1051 }
1052 
1053 static int
1054 mdoc_em_pre(MDOC_ARGS)
1055 {
1056 	struct htmlpair	tag;
1057 
1058 	PAIR_CLASS_INIT(&tag, "emph");
1059 	print_otag(h, TAG_SPAN, 1, &tag);
1060 	return(1);
1061 }
1062 
1063 static int
1064 mdoc_d1_pre(MDOC_ARGS)
1065 {
1066 	struct htmlpair	 tag[2];
1067 	struct roffsu	 su;
1068 
1069 	if (MDOC_BLOCK != n->type)
1070 		return(1);
1071 
1072 	SCALE_VS_INIT(&su, 0);
1073 	bufinit(h);
1074 	bufcat_su(h, "margin-top", &su);
1075 	bufcat_su(h, "margin-bottom", &su);
1076 	PAIR_STYLE_INIT(&tag[0], h);
1077 	print_otag(h, TAG_BLOCKQUOTE, 1, tag);
1078 
1079 	/* BLOCKQUOTE needs a block body. */
1080 
1081 	PAIR_CLASS_INIT(&tag[0], "display");
1082 	print_otag(h, TAG_DIV, 1, tag);
1083 
1084 	if (MDOC_Dl == n->tok) {
1085 		PAIR_CLASS_INIT(&tag[0], "lit");
1086 		print_otag(h, TAG_CODE, 1, tag);
1087 	}
1088 
1089 	return(1);
1090 }
1091 
1092 static int
1093 mdoc_sx_pre(MDOC_ARGS)
1094 {
1095 	struct htmlpair	 tag[2];
1096 
1097 	bufinit(h);
1098 	bufcat(h, "#x");
1099 
1100 	for (n = n->child; n; ) {
1101 		bufcat_id(h, n->string);
1102 		if (NULL != (n = n->next))
1103 			bufcat_id(h, " ");
1104 	}
1105 
1106 	PAIR_CLASS_INIT(&tag[0], "link-sec");
1107 	PAIR_HREF_INIT(&tag[1], h->buf);
1108 
1109 	print_otag(h, TAG_I, 1, tag);
1110 	print_otag(h, TAG_A, 2, tag);
1111 	return(1);
1112 }
1113 
1114 static int
1115 mdoc_bd_pre(MDOC_ARGS)
1116 {
1117 	struct htmlpair		 tag[2];
1118 	int			 comp, sv;
1119 	const struct mdoc_node	*nn;
1120 	struct roffsu		 su;
1121 
1122 	if (MDOC_HEAD == n->type)
1123 		return(0);
1124 
1125 	if (MDOC_BLOCK == n->type) {
1126 		comp = n->norm->Bd.comp;
1127 		for (nn = n; nn && ! comp; nn = nn->parent) {
1128 			if (MDOC_BLOCK != nn->type)
1129 				continue;
1130 			if (MDOC_Ss == nn->tok || MDOC_Sh == nn->tok)
1131 				comp = 1;
1132 			if (nn->prev)
1133 				break;
1134 		}
1135 		if ( ! comp)
1136 			print_paragraph(h);
1137 		return(1);
1138 	}
1139 
1140 	/* Handle the -offset argument. */
1141 
1142 	if (n->norm->Bd.offs == NULL ||
1143 	    ! strcmp(n->norm->Bd.offs, "left"))
1144 		SCALE_HS_INIT(&su, 0);
1145 	else if ( ! strcmp(n->norm->Bd.offs, "indent"))
1146 		SCALE_HS_INIT(&su, INDENT);
1147 	else if ( ! strcmp(n->norm->Bd.offs, "indent-two"))
1148 		SCALE_HS_INIT(&su, INDENT * 2);
1149 	else
1150 		a2width(n->norm->Bd.offs, &su);
1151 
1152 	bufinit(h);
1153 	bufcat_su(h, "margin-left", &su);
1154 	PAIR_STYLE_INIT(&tag[0], h);
1155 
1156 	if (DISP_unfilled != n->norm->Bd.type &&
1157 	    DISP_literal != n->norm->Bd.type) {
1158 		PAIR_CLASS_INIT(&tag[1], "display");
1159 		print_otag(h, TAG_DIV, 2, tag);
1160 		return(1);
1161 	}
1162 
1163 	PAIR_CLASS_INIT(&tag[1], "lit display");
1164 	print_otag(h, TAG_PRE, 2, tag);
1165 
1166 	/* This can be recursive: save & set our literal state. */
1167 
1168 	sv = h->flags & HTML_LITERAL;
1169 	h->flags |= HTML_LITERAL;
1170 
1171 	for (nn = n->child; nn; nn = nn->next) {
1172 		print_mdoc_node(meta, nn, h);
1173 		/*
1174 		 * If the printed node flushes its own line, then we
1175 		 * needn't do it here as well.  This is hacky, but the
1176 		 * notion of selective eoln whitespace is pretty dumb
1177 		 * anyway, so don't sweat it.
1178 		 */
1179 		switch (nn->tok) {
1180 		case MDOC_Sm:
1181 			/* FALLTHROUGH */
1182 		case MDOC_br:
1183 			/* FALLTHROUGH */
1184 		case MDOC_sp:
1185 			/* FALLTHROUGH */
1186 		case MDOC_Bl:
1187 			/* FALLTHROUGH */
1188 		case MDOC_D1:
1189 			/* FALLTHROUGH */
1190 		case MDOC_Dl:
1191 			/* FALLTHROUGH */
1192 		case MDOC_Lp:
1193 			/* FALLTHROUGH */
1194 		case MDOC_Pp:
1195 			continue;
1196 		default:
1197 			break;
1198 		}
1199 		if (nn->next && nn->next->line == nn->line)
1200 			continue;
1201 		else if (nn->next)
1202 			print_text(h, "\n");
1203 
1204 		h->flags |= HTML_NOSPACE;
1205 	}
1206 
1207 	if (0 == sv)
1208 		h->flags &= ~HTML_LITERAL;
1209 
1210 	return(0);
1211 }
1212 
1213 static int
1214 mdoc_pa_pre(MDOC_ARGS)
1215 {
1216 	struct htmlpair	tag;
1217 
1218 	PAIR_CLASS_INIT(&tag, "file");
1219 	print_otag(h, TAG_I, 1, &tag);
1220 	return(1);
1221 }
1222 
1223 static int
1224 mdoc_ad_pre(MDOC_ARGS)
1225 {
1226 	struct htmlpair	tag;
1227 
1228 	PAIR_CLASS_INIT(&tag, "addr");
1229 	print_otag(h, TAG_I, 1, &tag);
1230 	return(1);
1231 }
1232 
1233 static int
1234 mdoc_an_pre(MDOC_ARGS)
1235 {
1236 	struct htmlpair	tag;
1237 
1238 	if (n->norm->An.auth == AUTH_split) {
1239 		h->flags &= ~HTML_NOSPLIT;
1240 		h->flags |= HTML_SPLIT;
1241 		return(0);
1242 	}
1243 	if (n->norm->An.auth == AUTH_nosplit) {
1244 		h->flags &= ~HTML_SPLIT;
1245 		h->flags |= HTML_NOSPLIT;
1246 		return(0);
1247 	}
1248 
1249 	if (n->child == NULL)
1250 		return(0);
1251 
1252 	if (h->flags & HTML_SPLIT)
1253 		print_otag(h, TAG_BR, 0, NULL);
1254 
1255 	if (n->sec == SEC_AUTHORS && ! (h->flags & HTML_NOSPLIT))
1256 		h->flags |= HTML_SPLIT;
1257 
1258 	PAIR_CLASS_INIT(&tag, "author");
1259 	print_otag(h, TAG_SPAN, 1, &tag);
1260 	return(1);
1261 }
1262 
1263 static int
1264 mdoc_cd_pre(MDOC_ARGS)
1265 {
1266 	struct htmlpair	tag;
1267 
1268 	synopsis_pre(h, n);
1269 	PAIR_CLASS_INIT(&tag, "config");
1270 	print_otag(h, TAG_B, 1, &tag);
1271 	return(1);
1272 }
1273 
1274 static int
1275 mdoc_dv_pre(MDOC_ARGS)
1276 {
1277 	struct htmlpair	tag;
1278 
1279 	PAIR_CLASS_INIT(&tag, "define");
1280 	print_otag(h, TAG_SPAN, 1, &tag);
1281 	return(1);
1282 }
1283 
1284 static int
1285 mdoc_ev_pre(MDOC_ARGS)
1286 {
1287 	struct htmlpair	tag;
1288 
1289 	PAIR_CLASS_INIT(&tag, "env");
1290 	print_otag(h, TAG_SPAN, 1, &tag);
1291 	return(1);
1292 }
1293 
1294 static int
1295 mdoc_er_pre(MDOC_ARGS)
1296 {
1297 	struct htmlpair	tag;
1298 
1299 	PAIR_CLASS_INIT(&tag, "errno");
1300 	print_otag(h, TAG_SPAN, 1, &tag);
1301 	return(1);
1302 }
1303 
1304 static int
1305 mdoc_fa_pre(MDOC_ARGS)
1306 {
1307 	const struct mdoc_node	*nn;
1308 	struct htmlpair		 tag;
1309 	struct tag		*t;
1310 
1311 	PAIR_CLASS_INIT(&tag, "farg");
1312 	if (n->parent->tok != MDOC_Fo) {
1313 		print_otag(h, TAG_I, 1, &tag);
1314 		return(1);
1315 	}
1316 
1317 	for (nn = n->child; nn; nn = nn->next) {
1318 		t = print_otag(h, TAG_I, 1, &tag);
1319 		print_text(h, nn->string);
1320 		print_tagq(h, t);
1321 		if (nn->next) {
1322 			h->flags |= HTML_NOSPACE;
1323 			print_text(h, ",");
1324 		}
1325 	}
1326 
1327 	if (n->child && n->next && n->next->tok == MDOC_Fa) {
1328 		h->flags |= HTML_NOSPACE;
1329 		print_text(h, ",");
1330 	}
1331 
1332 	return(0);
1333 }
1334 
1335 static int
1336 mdoc_fd_pre(MDOC_ARGS)
1337 {
1338 	struct htmlpair	 tag[2];
1339 	char		 buf[BUFSIZ];
1340 	size_t		 sz;
1341 	int		 i;
1342 	struct tag	*t;
1343 
1344 	synopsis_pre(h, n);
1345 
1346 	if (NULL == (n = n->child))
1347 		return(0);
1348 
1349 	assert(MDOC_TEXT == n->type);
1350 
1351 	if (strcmp(n->string, "#include")) {
1352 		PAIR_CLASS_INIT(&tag[0], "macro");
1353 		print_otag(h, TAG_B, 1, tag);
1354 		return(1);
1355 	}
1356 
1357 	PAIR_CLASS_INIT(&tag[0], "includes");
1358 	print_otag(h, TAG_B, 1, tag);
1359 	print_text(h, n->string);
1360 
1361 	if (NULL != (n = n->next)) {
1362 		assert(MDOC_TEXT == n->type);
1363 
1364 		/*
1365 		 * XXX This is broken and not easy to fix.
1366 		 * When using -Oincludes, truncation may occur.
1367 		 * Dynamic allocation wouldn't help because
1368 		 * passing long strings to buffmt_includes()
1369 		 * does not work either.
1370 		 */
1371 
1372 		strlcpy(buf, '<' == *n->string || '"' == *n->string ?
1373 		    n->string + 1 : n->string, BUFSIZ);
1374 
1375 		sz = strlen(buf);
1376 		if (sz && ('>' == buf[sz - 1] || '"' == buf[sz - 1]))
1377 			buf[sz - 1] = '\0';
1378 
1379 		PAIR_CLASS_INIT(&tag[0], "link-includes");
1380 
1381 		i = 1;
1382 		if (h->base_includes) {
1383 			buffmt_includes(h, buf);
1384 			PAIR_HREF_INIT(&tag[i], h->buf);
1385 			i++;
1386 		}
1387 
1388 		t = print_otag(h, TAG_A, i, tag);
1389 		print_text(h, n->string);
1390 		print_tagq(h, t);
1391 
1392 		n = n->next;
1393 	}
1394 
1395 	for ( ; n; n = n->next) {
1396 		assert(MDOC_TEXT == n->type);
1397 		print_text(h, n->string);
1398 	}
1399 
1400 	return(0);
1401 }
1402 
1403 static int
1404 mdoc_vt_pre(MDOC_ARGS)
1405 {
1406 	struct htmlpair	 tag;
1407 
1408 	if (MDOC_BLOCK == n->type) {
1409 		synopsis_pre(h, n);
1410 		return(1);
1411 	} else if (MDOC_ELEM == n->type) {
1412 		synopsis_pre(h, n);
1413 	} else if (MDOC_HEAD == n->type)
1414 		return(0);
1415 
1416 	PAIR_CLASS_INIT(&tag, "type");
1417 	print_otag(h, TAG_SPAN, 1, &tag);
1418 	return(1);
1419 }
1420 
1421 static int
1422 mdoc_ft_pre(MDOC_ARGS)
1423 {
1424 	struct htmlpair	 tag;
1425 
1426 	synopsis_pre(h, n);
1427 	PAIR_CLASS_INIT(&tag, "ftype");
1428 	print_otag(h, TAG_I, 1, &tag);
1429 	return(1);
1430 }
1431 
1432 static int
1433 mdoc_fn_pre(MDOC_ARGS)
1434 {
1435 	struct tag	*t;
1436 	struct htmlpair	 tag[2];
1437 	char		 nbuf[BUFSIZ];
1438 	const char	*sp, *ep;
1439 	int		 sz, i, pretty;
1440 
1441 	pretty = MDOC_SYNPRETTY & n->flags;
1442 	synopsis_pre(h, n);
1443 
1444 	/* Split apart into type and name. */
1445 	assert(n->child->string);
1446 	sp = n->child->string;
1447 
1448 	ep = strchr(sp, ' ');
1449 	if (NULL != ep) {
1450 		PAIR_CLASS_INIT(&tag[0], "ftype");
1451 		t = print_otag(h, TAG_I, 1, tag);
1452 
1453 		while (ep) {
1454 			sz = MIN((int)(ep - sp), BUFSIZ - 1);
1455 			(void)memcpy(nbuf, sp, (size_t)sz);
1456 			nbuf[sz] = '\0';
1457 			print_text(h, nbuf);
1458 			sp = ++ep;
1459 			ep = strchr(sp, ' ');
1460 		}
1461 		print_tagq(h, t);
1462 	}
1463 
1464 	PAIR_CLASS_INIT(&tag[0], "fname");
1465 
1466 	/*
1467 	 * FIXME: only refer to IDs that we know exist.
1468 	 */
1469 
1470 #if 0
1471 	if (MDOC_SYNPRETTY & n->flags) {
1472 		nbuf[0] = '\0';
1473 		html_idcat(nbuf, sp, BUFSIZ);
1474 		PAIR_ID_INIT(&tag[1], nbuf);
1475 	} else {
1476 		strlcpy(nbuf, "#", BUFSIZ);
1477 		html_idcat(nbuf, sp, BUFSIZ);
1478 		PAIR_HREF_INIT(&tag[1], nbuf);
1479 	}
1480 #endif
1481 
1482 	t = print_otag(h, TAG_B, 1, tag);
1483 
1484 	if (sp)
1485 		print_text(h, sp);
1486 
1487 	print_tagq(h, t);
1488 
1489 	h->flags |= HTML_NOSPACE;
1490 	print_text(h, "(");
1491 	h->flags |= HTML_NOSPACE;
1492 
1493 	PAIR_CLASS_INIT(&tag[0], "farg");
1494 	bufinit(h);
1495 	bufcat_style(h, "white-space", "nowrap");
1496 	PAIR_STYLE_INIT(&tag[1], h);
1497 
1498 	for (n = n->child->next; n; n = n->next) {
1499 		i = 1;
1500 		if (MDOC_SYNPRETTY & n->flags)
1501 			i = 2;
1502 		t = print_otag(h, TAG_I, i, tag);
1503 		print_text(h, n->string);
1504 		print_tagq(h, t);
1505 		if (n->next) {
1506 			h->flags |= HTML_NOSPACE;
1507 			print_text(h, ",");
1508 		}
1509 	}
1510 
1511 	h->flags |= HTML_NOSPACE;
1512 	print_text(h, ")");
1513 
1514 	if (pretty) {
1515 		h->flags |= HTML_NOSPACE;
1516 		print_text(h, ";");
1517 	}
1518 
1519 	return(0);
1520 }
1521 
1522 static int
1523 mdoc_sm_pre(MDOC_ARGS)
1524 {
1525 
1526 	if (NULL == n->child)
1527 		h->flags ^= HTML_NONOSPACE;
1528 	else if (0 == strcmp("on", n->child->string))
1529 		h->flags &= ~HTML_NONOSPACE;
1530 	else
1531 		h->flags |= HTML_NONOSPACE;
1532 
1533 	if ( ! (HTML_NONOSPACE & h->flags))
1534 		h->flags &= ~HTML_NOSPACE;
1535 
1536 	return(0);
1537 }
1538 
1539 static int
1540 mdoc_skip_pre(MDOC_ARGS)
1541 {
1542 
1543 	return(0);
1544 }
1545 
1546 static int
1547 mdoc_pp_pre(MDOC_ARGS)
1548 {
1549 
1550 	print_paragraph(h);
1551 	return(0);
1552 }
1553 
1554 static int
1555 mdoc_sp_pre(MDOC_ARGS)
1556 {
1557 	struct roffsu	 su;
1558 	struct htmlpair	 tag;
1559 
1560 	SCALE_VS_INIT(&su, 1);
1561 
1562 	if (MDOC_sp == n->tok) {
1563 		if (NULL != (n = n->child))
1564 			if ( ! a2roffsu(n->string, &su, SCALE_VS))
1565 				SCALE_VS_INIT(&su, atoi(n->string));
1566 	} else
1567 		su.scale = 0.0;
1568 
1569 	bufinit(h);
1570 	bufcat_su(h, "height", &su);
1571 	PAIR_STYLE_INIT(&tag, h);
1572 	print_otag(h, TAG_DIV, 1, &tag);
1573 
1574 	/* So the div isn't empty: */
1575 	print_text(h, "\\~");
1576 
1577 	return(0);
1578 
1579 }
1580 
1581 static int
1582 mdoc_lk_pre(MDOC_ARGS)
1583 {
1584 	struct htmlpair	 tag[2];
1585 
1586 	if (NULL == (n = n->child))
1587 		return(0);
1588 
1589 	assert(MDOC_TEXT == n->type);
1590 
1591 	PAIR_CLASS_INIT(&tag[0], "link-ext");
1592 	PAIR_HREF_INIT(&tag[1], n->string);
1593 
1594 	print_otag(h, TAG_A, 2, tag);
1595 
1596 	if (NULL == n->next)
1597 		print_text(h, n->string);
1598 
1599 	for (n = n->next; n; n = n->next)
1600 		print_text(h, n->string);
1601 
1602 	return(0);
1603 }
1604 
1605 static int
1606 mdoc_mt_pre(MDOC_ARGS)
1607 {
1608 	struct htmlpair	 tag[2];
1609 	struct tag	*t;
1610 
1611 	PAIR_CLASS_INIT(&tag[0], "link-mail");
1612 
1613 	for (n = n->child; n; n = n->next) {
1614 		assert(MDOC_TEXT == n->type);
1615 
1616 		bufinit(h);
1617 		bufcat(h, "mailto:");
1618 		bufcat(h, n->string);
1619 
1620 		PAIR_HREF_INIT(&tag[1], h->buf);
1621 		t = print_otag(h, TAG_A, 2, tag);
1622 		print_text(h, n->string);
1623 		print_tagq(h, t);
1624 	}
1625 
1626 	return(0);
1627 }
1628 
1629 static int
1630 mdoc_fo_pre(MDOC_ARGS)
1631 {
1632 	struct htmlpair	 tag;
1633 	struct tag	*t;
1634 
1635 	if (MDOC_BODY == n->type) {
1636 		h->flags |= HTML_NOSPACE;
1637 		print_text(h, "(");
1638 		h->flags |= HTML_NOSPACE;
1639 		return(1);
1640 	} else if (MDOC_BLOCK == n->type) {
1641 		synopsis_pre(h, n);
1642 		return(1);
1643 	}
1644 
1645 	/* XXX: we drop non-initial arguments as per groff. */
1646 
1647 	assert(n->child);
1648 	assert(n->child->string);
1649 
1650 	PAIR_CLASS_INIT(&tag, "fname");
1651 	t = print_otag(h, TAG_B, 1, &tag);
1652 	print_text(h, n->child->string);
1653 	print_tagq(h, t);
1654 	return(0);
1655 }
1656 
1657 static void
1658 mdoc_fo_post(MDOC_ARGS)
1659 {
1660 
1661 	if (MDOC_BODY != n->type)
1662 		return;
1663 	h->flags |= HTML_NOSPACE;
1664 	print_text(h, ")");
1665 	h->flags |= HTML_NOSPACE;
1666 	print_text(h, ";");
1667 }
1668 
1669 static int
1670 mdoc_in_pre(MDOC_ARGS)
1671 {
1672 	struct tag	*t;
1673 	struct htmlpair	 tag[2];
1674 	int		 i;
1675 
1676 	synopsis_pre(h, n);
1677 
1678 	PAIR_CLASS_INIT(&tag[0], "includes");
1679 	print_otag(h, TAG_B, 1, tag);
1680 
1681 	/*
1682 	 * The first argument of the `In' gets special treatment as
1683 	 * being a linked value.  Subsequent values are printed
1684 	 * afterward.  groff does similarly.  This also handles the case
1685 	 * of no children.
1686 	 */
1687 
1688 	if (MDOC_SYNPRETTY & n->flags && MDOC_LINE & n->flags)
1689 		print_text(h, "#include");
1690 
1691 	print_text(h, "<");
1692 	h->flags |= HTML_NOSPACE;
1693 
1694 	if (NULL != (n = n->child)) {
1695 		assert(MDOC_TEXT == n->type);
1696 
1697 		PAIR_CLASS_INIT(&tag[0], "link-includes");
1698 
1699 		i = 1;
1700 		if (h->base_includes) {
1701 			buffmt_includes(h, n->string);
1702 			PAIR_HREF_INIT(&tag[i], h->buf);
1703 			i++;
1704 		}
1705 
1706 		t = print_otag(h, TAG_A, i, tag);
1707 		print_text(h, n->string);
1708 		print_tagq(h, t);
1709 
1710 		n = n->next;
1711 	}
1712 
1713 	h->flags |= HTML_NOSPACE;
1714 	print_text(h, ">");
1715 
1716 	for ( ; n; n = n->next) {
1717 		assert(MDOC_TEXT == n->type);
1718 		print_text(h, n->string);
1719 	}
1720 
1721 	return(0);
1722 }
1723 
1724 static int
1725 mdoc_ic_pre(MDOC_ARGS)
1726 {
1727 	struct htmlpair	tag;
1728 
1729 	PAIR_CLASS_INIT(&tag, "cmd");
1730 	print_otag(h, TAG_B, 1, &tag);
1731 	return(1);
1732 }
1733 
1734 static int
1735 mdoc_rv_pre(MDOC_ARGS)
1736 {
1737 	struct htmlpair	 tag;
1738 	struct tag	*t;
1739 	int		 nchild;
1740 
1741 	if (n->prev)
1742 		print_otag(h, TAG_BR, 0, NULL);
1743 
1744 	PAIR_CLASS_INIT(&tag, "fname");
1745 
1746 	nchild = n->nchild;
1747 	if (nchild > 0) {
1748 		print_text(h, "The");
1749 
1750 		for (n = n->child; n; n = n->next) {
1751 			t = print_otag(h, TAG_B, 1, &tag);
1752 			print_text(h, n->string);
1753 			print_tagq(h, t);
1754 
1755 			h->flags |= HTML_NOSPACE;
1756 			print_text(h, "()");
1757 
1758 			if (n->next == NULL)
1759 				continue;
1760 
1761 			if (nchild > 2) {
1762 				h->flags |= HTML_NOSPACE;
1763 				print_text(h, ",");
1764 			}
1765 			if (n->next->next == NULL)
1766 				print_text(h, "and");
1767 		}
1768 
1769 		if (nchild > 1)
1770 			print_text(h, "functions return");
1771 		else
1772 			print_text(h, "function returns");
1773 
1774 		print_text(h, "the value\\~0 if successful;");
1775 	} else
1776 		print_text(h, "Upon successful completion,"
1777                     " the value\\~0 is returned;");
1778 
1779 	print_text(h, "otherwise the value\\~\\-1 is returned"
1780 	   " and the global variable");
1781 
1782 	PAIR_CLASS_INIT(&tag, "var");
1783 	t = print_otag(h, TAG_B, 1, &tag);
1784 	print_text(h, "errno");
1785 	print_tagq(h, t);
1786 	print_text(h, "is set to indicate the error.");
1787 	return(0);
1788 }
1789 
1790 static int
1791 mdoc_va_pre(MDOC_ARGS)
1792 {
1793 	struct htmlpair	tag;
1794 
1795 	PAIR_CLASS_INIT(&tag, "var");
1796 	print_otag(h, TAG_B, 1, &tag);
1797 	return(1);
1798 }
1799 
1800 static int
1801 mdoc_ap_pre(MDOC_ARGS)
1802 {
1803 
1804 	h->flags |= HTML_NOSPACE;
1805 	print_text(h, "\\(aq");
1806 	h->flags |= HTML_NOSPACE;
1807 	return(1);
1808 }
1809 
1810 static int
1811 mdoc_bf_pre(MDOC_ARGS)
1812 {
1813 	struct htmlpair	 tag[2];
1814 	struct roffsu	 su;
1815 
1816 	if (MDOC_HEAD == n->type)
1817 		return(0);
1818 	else if (MDOC_BODY != n->type)
1819 		return(1);
1820 
1821 	if (FONT_Em == n->norm->Bf.font)
1822 		PAIR_CLASS_INIT(&tag[0], "emph");
1823 	else if (FONT_Sy == n->norm->Bf.font)
1824 		PAIR_CLASS_INIT(&tag[0], "symb");
1825 	else if (FONT_Li == n->norm->Bf.font)
1826 		PAIR_CLASS_INIT(&tag[0], "lit");
1827 	else
1828 		PAIR_CLASS_INIT(&tag[0], "none");
1829 
1830 	/*
1831 	 * We want this to be inline-formatted, but needs to be div to
1832 	 * accept block children.
1833 	 */
1834 	bufinit(h);
1835 	bufcat_style(h, "display", "inline");
1836 	SCALE_HS_INIT(&su, 1);
1837 	/* Needs a left-margin for spacing. */
1838 	bufcat_su(h, "margin-left", &su);
1839 	PAIR_STYLE_INIT(&tag[1], h);
1840 	print_otag(h, TAG_DIV, 2, tag);
1841 	return(1);
1842 }
1843 
1844 static int
1845 mdoc_ms_pre(MDOC_ARGS)
1846 {
1847 	struct htmlpair	tag;
1848 
1849 	PAIR_CLASS_INIT(&tag, "symb");
1850 	print_otag(h, TAG_SPAN, 1, &tag);
1851 	return(1);
1852 }
1853 
1854 static int
1855 mdoc_igndelim_pre(MDOC_ARGS)
1856 {
1857 
1858 	h->flags |= HTML_IGNDELIM;
1859 	return(1);
1860 }
1861 
1862 static void
1863 mdoc_pf_post(MDOC_ARGS)
1864 {
1865 
1866 	h->flags |= HTML_NOSPACE;
1867 }
1868 
1869 static int
1870 mdoc_rs_pre(MDOC_ARGS)
1871 {
1872 	struct htmlpair	 tag;
1873 
1874 	if (MDOC_BLOCK != n->type)
1875 		return(1);
1876 
1877 	if (n->prev && SEC_SEE_ALSO == n->sec)
1878 		print_paragraph(h);
1879 
1880 	PAIR_CLASS_INIT(&tag, "ref");
1881 	print_otag(h, TAG_SPAN, 1, &tag);
1882 	return(1);
1883 }
1884 
1885 static int
1886 mdoc_no_pre(MDOC_ARGS)
1887 {
1888 	struct htmlpair	tag;
1889 
1890 	PAIR_CLASS_INIT(&tag, "none");
1891 	print_otag(h, TAG_CODE, 1, &tag);
1892 	return(1);
1893 }
1894 
1895 static int
1896 mdoc_li_pre(MDOC_ARGS)
1897 {
1898 	struct htmlpair	tag;
1899 
1900 	PAIR_CLASS_INIT(&tag, "lit");
1901 	print_otag(h, TAG_CODE, 1, &tag);
1902 	return(1);
1903 }
1904 
1905 static int
1906 mdoc_sy_pre(MDOC_ARGS)
1907 {
1908 	struct htmlpair	tag;
1909 
1910 	PAIR_CLASS_INIT(&tag, "symb");
1911 	print_otag(h, TAG_SPAN, 1, &tag);
1912 	return(1);
1913 }
1914 
1915 static int
1916 mdoc_bt_pre(MDOC_ARGS)
1917 {
1918 
1919 	print_text(h, "is currently in beta test.");
1920 	return(0);
1921 }
1922 
1923 static int
1924 mdoc_ud_pre(MDOC_ARGS)
1925 {
1926 
1927 	print_text(h, "currently under development.");
1928 	return(0);
1929 }
1930 
1931 static int
1932 mdoc_lb_pre(MDOC_ARGS)
1933 {
1934 	struct htmlpair	tag;
1935 
1936 	if (SEC_LIBRARY == n->sec && MDOC_LINE & n->flags && n->prev)
1937 		print_otag(h, TAG_BR, 0, NULL);
1938 
1939 	PAIR_CLASS_INIT(&tag, "lib");
1940 	print_otag(h, TAG_SPAN, 1, &tag);
1941 	return(1);
1942 }
1943 
1944 static int
1945 mdoc__x_pre(MDOC_ARGS)
1946 {
1947 	struct htmlpair	tag[2];
1948 	enum htmltag	t;
1949 
1950 	t = TAG_SPAN;
1951 
1952 	switch (n->tok) {
1953 	case MDOC__A:
1954 		PAIR_CLASS_INIT(&tag[0], "ref-auth");
1955 		if (n->prev && MDOC__A == n->prev->tok)
1956 			if (NULL == n->next || MDOC__A != n->next->tok)
1957 				print_text(h, "and");
1958 		break;
1959 	case MDOC__B:
1960 		PAIR_CLASS_INIT(&tag[0], "ref-book");
1961 		t = TAG_I;
1962 		break;
1963 	case MDOC__C:
1964 		PAIR_CLASS_INIT(&tag[0], "ref-city");
1965 		break;
1966 	case MDOC__D:
1967 		PAIR_CLASS_INIT(&tag[0], "ref-date");
1968 		break;
1969 	case MDOC__I:
1970 		PAIR_CLASS_INIT(&tag[0], "ref-issue");
1971 		t = TAG_I;
1972 		break;
1973 	case MDOC__J:
1974 		PAIR_CLASS_INIT(&tag[0], "ref-jrnl");
1975 		t = TAG_I;
1976 		break;
1977 	case MDOC__N:
1978 		PAIR_CLASS_INIT(&tag[0], "ref-num");
1979 		break;
1980 	case MDOC__O:
1981 		PAIR_CLASS_INIT(&tag[0], "ref-opt");
1982 		break;
1983 	case MDOC__P:
1984 		PAIR_CLASS_INIT(&tag[0], "ref-page");
1985 		break;
1986 	case MDOC__Q:
1987 		PAIR_CLASS_INIT(&tag[0], "ref-corp");
1988 		break;
1989 	case MDOC__R:
1990 		PAIR_CLASS_INIT(&tag[0], "ref-rep");
1991 		break;
1992 	case MDOC__T:
1993 		PAIR_CLASS_INIT(&tag[0], "ref-title");
1994 		break;
1995 	case MDOC__U:
1996 		PAIR_CLASS_INIT(&tag[0], "link-ref");
1997 		break;
1998 	case MDOC__V:
1999 		PAIR_CLASS_INIT(&tag[0], "ref-vol");
2000 		break;
2001 	default:
2002 		abort();
2003 		/* NOTREACHED */
2004 	}
2005 
2006 	if (MDOC__U != n->tok) {
2007 		print_otag(h, t, 1, tag);
2008 		return(1);
2009 	}
2010 
2011 	PAIR_HREF_INIT(&tag[1], n->child->string);
2012 	print_otag(h, TAG_A, 2, tag);
2013 
2014 	return(1);
2015 }
2016 
2017 static void
2018 mdoc__x_post(MDOC_ARGS)
2019 {
2020 
2021 	if (MDOC__A == n->tok && n->next && MDOC__A == n->next->tok)
2022 		if (NULL == n->next->next || MDOC__A != n->next->next->tok)
2023 			if (NULL == n->prev || MDOC__A != n->prev->tok)
2024 				return;
2025 
2026 	/* TODO: %U */
2027 
2028 	if (NULL == n->parent || MDOC_Rs != n->parent->tok)
2029 		return;
2030 
2031 	h->flags |= HTML_NOSPACE;
2032 	print_text(h, n->next ? "," : ".");
2033 }
2034 
2035 static int
2036 mdoc_bk_pre(MDOC_ARGS)
2037 {
2038 
2039 	switch (n->type) {
2040 	case MDOC_BLOCK:
2041 		break;
2042 	case MDOC_HEAD:
2043 		return(0);
2044 	case MDOC_BODY:
2045 		if (n->parent->args || 0 == n->prev->nchild)
2046 			h->flags |= HTML_PREKEEP;
2047 		break;
2048 	default:
2049 		abort();
2050 		/* NOTREACHED */
2051 	}
2052 
2053 	return(1);
2054 }
2055 
2056 static void
2057 mdoc_bk_post(MDOC_ARGS)
2058 {
2059 
2060 	if (MDOC_BODY == n->type)
2061 		h->flags &= ~(HTML_KEEP | HTML_PREKEEP);
2062 }
2063 
2064 static int
2065 mdoc_quote_pre(MDOC_ARGS)
2066 {
2067 	struct htmlpair	tag;
2068 
2069 	if (MDOC_BODY != n->type)
2070 		return(1);
2071 
2072 	switch (n->tok) {
2073 	case MDOC_Ao:
2074 		/* FALLTHROUGH */
2075 	case MDOC_Aq:
2076 		print_text(h, "\\(la");
2077 		break;
2078 	case MDOC_Bro:
2079 		/* FALLTHROUGH */
2080 	case MDOC_Brq:
2081 		print_text(h, "\\(lC");
2082 		break;
2083 	case MDOC_Bo:
2084 		/* FALLTHROUGH */
2085 	case MDOC_Bq:
2086 		print_text(h, "\\(lB");
2087 		break;
2088 	case MDOC_Oo:
2089 		/* FALLTHROUGH */
2090 	case MDOC_Op:
2091 		print_text(h, "\\(lB");
2092 		h->flags |= HTML_NOSPACE;
2093 		PAIR_CLASS_INIT(&tag, "opt");
2094 		print_otag(h, TAG_SPAN, 1, &tag);
2095 		break;
2096 	case MDOC_En:
2097 		if (NULL == n->norm->Es ||
2098 		    NULL == n->norm->Es->child)
2099 			return(1);
2100 		print_text(h, n->norm->Es->child->string);
2101 		break;
2102 	case MDOC_Eo:
2103 		break;
2104 	case MDOC_Do:
2105 		/* FALLTHROUGH */
2106 	case MDOC_Dq:
2107 		/* FALLTHROUGH */
2108 	case MDOC_Qo:
2109 		/* FALLTHROUGH */
2110 	case MDOC_Qq:
2111 		print_text(h, "\\(lq");
2112 		break;
2113 	case MDOC_Po:
2114 		/* FALLTHROUGH */
2115 	case MDOC_Pq:
2116 		print_text(h, "(");
2117 		break;
2118 	case MDOC_Ql:
2119 		print_text(h, "\\(oq");
2120 		h->flags |= HTML_NOSPACE;
2121 		PAIR_CLASS_INIT(&tag, "lit");
2122 		print_otag(h, TAG_CODE, 1, &tag);
2123 		break;
2124 	case MDOC_So:
2125 		/* FALLTHROUGH */
2126 	case MDOC_Sq:
2127 		print_text(h, "\\(oq");
2128 		break;
2129 	default:
2130 		abort();
2131 		/* NOTREACHED */
2132 	}
2133 
2134 	h->flags |= HTML_NOSPACE;
2135 	return(1);
2136 }
2137 
2138 static void
2139 mdoc_quote_post(MDOC_ARGS)
2140 {
2141 
2142 	if (MDOC_BODY != n->type)
2143 		return;
2144 
2145 	if (MDOC_En != n->tok)
2146 		h->flags |= HTML_NOSPACE;
2147 
2148 	switch (n->tok) {
2149 	case MDOC_Ao:
2150 		/* FALLTHROUGH */
2151 	case MDOC_Aq:
2152 		print_text(h, "\\(ra");
2153 		break;
2154 	case MDOC_Bro:
2155 		/* FALLTHROUGH */
2156 	case MDOC_Brq:
2157 		print_text(h, "\\(rC");
2158 		break;
2159 	case MDOC_Oo:
2160 		/* FALLTHROUGH */
2161 	case MDOC_Op:
2162 		/* FALLTHROUGH */
2163 	case MDOC_Bo:
2164 		/* FALLTHROUGH */
2165 	case MDOC_Bq:
2166 		print_text(h, "\\(rB");
2167 		break;
2168 	case MDOC_En:
2169 		if (NULL != n->norm->Es &&
2170 		    NULL != n->norm->Es->child &&
2171 		    NULL != n->norm->Es->child->next) {
2172 			h->flags |= HTML_NOSPACE;
2173 			print_text(h, n->norm->Es->child->next->string);
2174 		}
2175 		break;
2176 	case MDOC_Eo:
2177 		break;
2178 	case MDOC_Qo:
2179 		/* FALLTHROUGH */
2180 	case MDOC_Qq:
2181 		/* FALLTHROUGH */
2182 	case MDOC_Do:
2183 		/* FALLTHROUGH */
2184 	case MDOC_Dq:
2185 		print_text(h, "\\(rq");
2186 		break;
2187 	case MDOC_Po:
2188 		/* FALLTHROUGH */
2189 	case MDOC_Pq:
2190 		print_text(h, ")");
2191 		break;
2192 	case MDOC_Ql:
2193 		/* FALLTHROUGH */
2194 	case MDOC_So:
2195 		/* FALLTHROUGH */
2196 	case MDOC_Sq:
2197 		print_text(h, "\\(cq");
2198 		break;
2199 	default:
2200 		abort();
2201 		/* NOTREACHED */
2202 	}
2203 }
2204