xref: /titanic_41/usr/src/cmd/mandoc/mdoc_html.c (revision f3312ec0e8acbd249df97358fb8c3ca92f4e089c)
1 /*	$Id: mdoc_html.c,v 1.182 2011/11/03 20:37:00 schwarze Exp $ */
2 /*
3  * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
4  *
5  * Permission to use, copy, modify, and distribute this software for any
6  * purpose with or without fee is hereby granted, provided that the above
7  * copyright notice and this permission notice appear in all copies.
8  *
9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16  */
17 #ifdef HAVE_CONFIG_H
18 #include "config.h"
19 #endif
20 
21 #include <sys/types.h>
22 
23 #include <assert.h>
24 #include <ctype.h>
25 #include <stdio.h>
26 #include <stdlib.h>
27 #include <string.h>
28 #include <unistd.h>
29 
30 #include "mandoc.h"
31 #include "out.h"
32 #include "html.h"
33 #include "mdoc.h"
34 #include "main.h"
35 
36 #define	INDENT		 5
37 
38 #define	MDOC_ARGS	  const struct mdoc_meta *m, \
39 			  const struct mdoc_node *n, \
40 			  struct html *h
41 
42 #ifndef MIN
43 #define	MIN(a,b)	((/*CONSTCOND*/(a)<(b))?(a):(b))
44 #endif
45 
46 struct	htmlmdoc {
47 	int		(*pre)(MDOC_ARGS);
48 	void		(*post)(MDOC_ARGS);
49 };
50 
51 static	void		  print_mdoc(MDOC_ARGS);
52 static	void		  print_mdoc_head(MDOC_ARGS);
53 static	void		  print_mdoc_node(MDOC_ARGS);
54 static	void		  print_mdoc_nodelist(MDOC_ARGS);
55 static	void	  	  synopsis_pre(struct html *,
56 				const struct mdoc_node *);
57 
58 static	void		  a2width(const char *, struct roffsu *);
59 static	void		  a2offs(const char *, struct roffsu *);
60 
61 static	void		  mdoc_root_post(MDOC_ARGS);
62 static	int		  mdoc_root_pre(MDOC_ARGS);
63 
64 static	void		  mdoc__x_post(MDOC_ARGS);
65 static	int		  mdoc__x_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_bt_pre(MDOC_ARGS);
76 static	int		  mdoc_bx_pre(MDOC_ARGS);
77 static	int		  mdoc_cd_pre(MDOC_ARGS);
78 static	int		  mdoc_d1_pre(MDOC_ARGS);
79 static	int		  mdoc_dv_pre(MDOC_ARGS);
80 static	int		  mdoc_fa_pre(MDOC_ARGS);
81 static	int		  mdoc_fd_pre(MDOC_ARGS);
82 static	int		  mdoc_fl_pre(MDOC_ARGS);
83 static	int		  mdoc_fn_pre(MDOC_ARGS);
84 static	int		  mdoc_ft_pre(MDOC_ARGS);
85 static	int		  mdoc_em_pre(MDOC_ARGS);
86 static	int		  mdoc_er_pre(MDOC_ARGS);
87 static	int		  mdoc_ev_pre(MDOC_ARGS);
88 static	int		  mdoc_ex_pre(MDOC_ARGS);
89 static	void		  mdoc_fo_post(MDOC_ARGS);
90 static	int		  mdoc_fo_pre(MDOC_ARGS);
91 static	int		  mdoc_ic_pre(MDOC_ARGS);
92 static	int		  mdoc_igndelim_pre(MDOC_ARGS);
93 static	int		  mdoc_in_pre(MDOC_ARGS);
94 static	int		  mdoc_it_pre(MDOC_ARGS);
95 static	int		  mdoc_lb_pre(MDOC_ARGS);
96 static	int		  mdoc_li_pre(MDOC_ARGS);
97 static	int		  mdoc_lk_pre(MDOC_ARGS);
98 static	int		  mdoc_mt_pre(MDOC_ARGS);
99 static	int		  mdoc_ms_pre(MDOC_ARGS);
100 static	int		  mdoc_nd_pre(MDOC_ARGS);
101 static	int		  mdoc_nm_pre(MDOC_ARGS);
102 static	int		  mdoc_ns_pre(MDOC_ARGS);
103 static	int		  mdoc_pa_pre(MDOC_ARGS);
104 static	void		  mdoc_pf_post(MDOC_ARGS);
105 static	int		  mdoc_pp_pre(MDOC_ARGS);
106 static	void		  mdoc_quote_post(MDOC_ARGS);
107 static	int		  mdoc_quote_pre(MDOC_ARGS);
108 static	int		  mdoc_rs_pre(MDOC_ARGS);
109 static	int		  mdoc_rv_pre(MDOC_ARGS);
110 static	int		  mdoc_sh_pre(MDOC_ARGS);
111 static	int		  mdoc_sm_pre(MDOC_ARGS);
112 static	int		  mdoc_sp_pre(MDOC_ARGS);
113 static	int		  mdoc_ss_pre(MDOC_ARGS);
114 static	int		  mdoc_sx_pre(MDOC_ARGS);
115 static	int		  mdoc_sy_pre(MDOC_ARGS);
116 static	int		  mdoc_ud_pre(MDOC_ARGS);
117 static	int		  mdoc_va_pre(MDOC_ARGS);
118 static	int		  mdoc_vt_pre(MDOC_ARGS);
119 static	int		  mdoc_xr_pre(MDOC_ARGS);
120 static	int		  mdoc_xx_pre(MDOC_ARGS);
121 
122 static	const struct htmlmdoc mdocs[MDOC_MAX] = {
123 	{mdoc_ap_pre, NULL}, /* Ap */
124 	{NULL, NULL}, /* Dd */
125 	{NULL, NULL}, /* Dt */
126 	{NULL, NULL}, /* Os */
127 	{mdoc_sh_pre, NULL }, /* Sh */
128 	{mdoc_ss_pre, NULL }, /* Ss */
129 	{mdoc_pp_pre, NULL}, /* Pp */
130 	{mdoc_d1_pre, NULL}, /* D1 */
131 	{mdoc_d1_pre, NULL}, /* Dl */
132 	{mdoc_bd_pre, NULL}, /* Bd */
133 	{NULL, NULL}, /* Ed */
134 	{mdoc_bl_pre, NULL}, /* Bl */
135 	{NULL, NULL}, /* El */
136 	{mdoc_it_pre, NULL}, /* It */
137 	{mdoc_ad_pre, NULL}, /* Ad */
138 	{mdoc_an_pre, NULL}, /* An */
139 	{mdoc_ar_pre, NULL}, /* Ar */
140 	{mdoc_cd_pre, NULL}, /* Cd */
141 	{mdoc_fl_pre, NULL}, /* Cm */
142 	{mdoc_dv_pre, NULL}, /* Dv */
143 	{mdoc_er_pre, NULL}, /* Er */
144 	{mdoc_ev_pre, NULL}, /* Ev */
145 	{mdoc_ex_pre, NULL}, /* Ex */
146 	{mdoc_fa_pre, NULL}, /* Fa */
147 	{mdoc_fd_pre, NULL}, /* Fd */
148 	{mdoc_fl_pre, NULL}, /* Fl */
149 	{mdoc_fn_pre, NULL}, /* Fn */
150 	{mdoc_ft_pre, NULL}, /* Ft */
151 	{mdoc_ic_pre, NULL}, /* Ic */
152 	{mdoc_in_pre, NULL}, /* In */
153 	{mdoc_li_pre, NULL}, /* Li */
154 	{mdoc_nd_pre, NULL}, /* Nd */
155 	{mdoc_nm_pre, NULL}, /* Nm */
156 	{mdoc_quote_pre, mdoc_quote_post}, /* Op */
157 	{NULL, NULL}, /* Ot */
158 	{mdoc_pa_pre, NULL}, /* Pa */
159 	{mdoc_rv_pre, NULL}, /* Rv */
160 	{NULL, NULL}, /* St */
161 	{mdoc_va_pre, NULL}, /* Va */
162 	{mdoc_vt_pre, NULL}, /* Vt */
163 	{mdoc_xr_pre, NULL}, /* Xr */
164 	{mdoc__x_pre, mdoc__x_post}, /* %A */
165 	{mdoc__x_pre, mdoc__x_post}, /* %B */
166 	{mdoc__x_pre, mdoc__x_post}, /* %D */
167 	{mdoc__x_pre, mdoc__x_post}, /* %I */
168 	{mdoc__x_pre, mdoc__x_post}, /* %J */
169 	{mdoc__x_pre, mdoc__x_post}, /* %N */
170 	{mdoc__x_pre, mdoc__x_post}, /* %O */
171 	{mdoc__x_pre, mdoc__x_post}, /* %P */
172 	{mdoc__x_pre, mdoc__x_post}, /* %R */
173 	{mdoc__x_pre, mdoc__x_post}, /* %T */
174 	{mdoc__x_pre, mdoc__x_post}, /* %V */
175 	{NULL, NULL}, /* Ac */
176 	{mdoc_quote_pre, mdoc_quote_post}, /* Ao */
177 	{mdoc_quote_pre, mdoc_quote_post}, /* Aq */
178 	{NULL, NULL}, /* At */
179 	{NULL, NULL}, /* Bc */
180 	{mdoc_bf_pre, NULL}, /* Bf */
181 	{mdoc_quote_pre, mdoc_quote_post}, /* Bo */
182 	{mdoc_quote_pre, mdoc_quote_post}, /* Bq */
183 	{mdoc_xx_pre, NULL}, /* Bsx */
184 	{mdoc_bx_pre, NULL}, /* Bx */
185 	{NULL, NULL}, /* Db */
186 	{NULL, NULL}, /* Dc */
187 	{mdoc_quote_pre, mdoc_quote_post}, /* Do */
188 	{mdoc_quote_pre, mdoc_quote_post}, /* Dq */
189 	{NULL, NULL}, /* Ec */ /* FIXME: no space */
190 	{NULL, NULL}, /* Ef */
191 	{mdoc_em_pre, NULL}, /* Em */
192 	{mdoc_quote_pre, mdoc_quote_post}, /* Eo */
193 	{mdoc_xx_pre, NULL}, /* Fx */
194 	{mdoc_ms_pre, NULL}, /* Ms */
195 	{mdoc_igndelim_pre, NULL}, /* No */
196 	{mdoc_ns_pre, NULL}, /* Ns */
197 	{mdoc_xx_pre, NULL}, /* Nx */
198 	{mdoc_xx_pre, NULL}, /* Ox */
199 	{NULL, NULL}, /* Pc */
200 	{mdoc_igndelim_pre, mdoc_pf_post}, /* Pf */
201 	{mdoc_quote_pre, mdoc_quote_post}, /* Po */
202 	{mdoc_quote_pre, mdoc_quote_post}, /* Pq */
203 	{NULL, NULL}, /* Qc */
204 	{mdoc_quote_pre, mdoc_quote_post}, /* Ql */
205 	{mdoc_quote_pre, mdoc_quote_post}, /* Qo */
206 	{mdoc_quote_pre, mdoc_quote_post}, /* Qq */
207 	{NULL, NULL}, /* Re */
208 	{mdoc_rs_pre, NULL}, /* Rs */
209 	{NULL, NULL}, /* Sc */
210 	{mdoc_quote_pre, mdoc_quote_post}, /* So */
211 	{mdoc_quote_pre, mdoc_quote_post}, /* Sq */
212 	{mdoc_sm_pre, NULL}, /* Sm */
213 	{mdoc_sx_pre, NULL}, /* Sx */
214 	{mdoc_sy_pre, NULL}, /* Sy */
215 	{NULL, NULL}, /* Tn */
216 	{mdoc_xx_pre, NULL}, /* Ux */
217 	{NULL, NULL}, /* Xc */
218 	{NULL, NULL}, /* Xo */
219 	{mdoc_fo_pre, mdoc_fo_post}, /* Fo */
220 	{NULL, NULL}, /* Fc */
221 	{mdoc_quote_pre, mdoc_quote_post}, /* Oo */
222 	{NULL, NULL}, /* Oc */
223 	{mdoc_bk_pre, mdoc_bk_post}, /* Bk */
224 	{NULL, NULL}, /* Ek */
225 	{mdoc_bt_pre, NULL}, /* Bt */
226 	{NULL, NULL}, /* Hf */
227 	{NULL, NULL}, /* Fr */
228 	{mdoc_ud_pre, NULL}, /* Ud */
229 	{mdoc_lb_pre, NULL}, /* Lb */
230 	{mdoc_pp_pre, NULL}, /* Lp */
231 	{mdoc_lk_pre, NULL}, /* Lk */
232 	{mdoc_mt_pre, NULL}, /* Mt */
233 	{mdoc_quote_pre, mdoc_quote_post}, /* Brq */
234 	{mdoc_quote_pre, mdoc_quote_post}, /* Bro */
235 	{NULL, NULL}, /* Brc */
236 	{mdoc__x_pre, mdoc__x_post}, /* %C */
237 	{NULL, NULL}, /* Es */  /* TODO */
238 	{NULL, NULL}, /* En */  /* TODO */
239 	{mdoc_xx_pre, NULL}, /* Dx */
240 	{mdoc__x_pre, mdoc__x_post}, /* %Q */
241 	{mdoc_sp_pre, NULL}, /* br */
242 	{mdoc_sp_pre, NULL}, /* sp */
243 	{mdoc__x_pre, mdoc__x_post}, /* %U */
244 	{NULL, NULL}, /* Ta */
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 void
263 html_mdoc(void *arg, const struct mdoc *m)
264 {
265 
266 	print_mdoc(mdoc_meta(m), mdoc_node(m), (struct html *)arg);
267 	putchar('\n');
268 }
269 
270 
271 /*
272  * Calculate the scaling unit passed in a `-width' argument.  This uses
273  * either a native scaling unit (e.g., 1i, 2m) or the string length of
274  * the value.
275  */
276 static void
277 a2width(const char *p, struct roffsu *su)
278 {
279 
280 	if ( ! a2roffsu(p, su, SCALE_MAX)) {
281 		su->unit = SCALE_BU;
282 		su->scale = html_strlen(p);
283 	}
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_otag(h, TAG_P, 0, NULL);
316 		break;
317 	case (MDOC_Ft):
318 		if (MDOC_Fn != n->tok && MDOC_Fo != n->tok) {
319 			print_otag(h, TAG_P, 0, NULL);
320 			break;
321 		}
322 		/* FALLTHROUGH */
323 	default:
324 		print_otag(h, TAG_BR, 0, NULL);
325 		break;
326 	}
327 }
328 
329 
330 /*
331  * Calculate the scaling unit passed in an `-offset' argument.  This
332  * uses either a native scaling unit (e.g., 1i, 2m), one of a set of
333  * predefined strings (indent, etc.), or the string length of the value.
334  */
335 static void
336 a2offs(const char *p, struct roffsu *su)
337 {
338 
339 	/* FIXME: "right"? */
340 
341 	if (0 == strcmp(p, "left"))
342 		SCALE_HS_INIT(su, 0);
343 	else if (0 == strcmp(p, "indent"))
344 		SCALE_HS_INIT(su, INDENT);
345 	else if (0 == strcmp(p, "indent-two"))
346 		SCALE_HS_INIT(su, INDENT * 2);
347 	else if ( ! a2roffsu(p, su, SCALE_MAX))
348 		SCALE_HS_INIT(su, html_strlen(p));
349 }
350 
351 
352 static void
353 print_mdoc(MDOC_ARGS)
354 {
355 	struct tag	*t, *tt;
356 	struct htmlpair	 tag;
357 
358 	PAIR_CLASS_INIT(&tag, "mandoc");
359 
360 	if ( ! (HTML_FRAGMENT & h->oflags)) {
361 		print_gen_decls(h);
362 		t = print_otag(h, TAG_HTML, 0, NULL);
363 		tt = print_otag(h, TAG_HEAD, 0, NULL);
364 		print_mdoc_head(m, n, h);
365 		print_tagq(h, tt);
366 		print_otag(h, TAG_BODY, 0, NULL);
367 		print_otag(h, TAG_DIV, 1, &tag);
368 	} else
369 		t = print_otag(h, TAG_DIV, 1, &tag);
370 
371 	print_mdoc_nodelist(m, n, h);
372 	print_tagq(h, t);
373 }
374 
375 
376 /* ARGSUSED */
377 static void
378 print_mdoc_head(MDOC_ARGS)
379 {
380 
381 	print_gen_head(h);
382 	bufinit(h);
383 	bufcat_fmt(h, "%s(%s)", m->title, m->msec);
384 
385 	if (m->arch)
386 		bufcat_fmt(h, " (%s)", m->arch);
387 
388 	print_otag(h, TAG_TITLE, 0, NULL);
389 	print_text(h, h->buf);
390 }
391 
392 
393 static void
394 print_mdoc_nodelist(MDOC_ARGS)
395 {
396 
397 	print_mdoc_node(m, n, h);
398 	if (n->next)
399 		print_mdoc_nodelist(m, n->next, h);
400 }
401 
402 
403 static void
404 print_mdoc_node(MDOC_ARGS)
405 {
406 	int		 child;
407 	struct tag	*t;
408 
409 	child = 1;
410 	t = h->tags.head;
411 
412 	switch (n->type) {
413 	case (MDOC_ROOT):
414 		child = mdoc_root_pre(m, n, h);
415 		break;
416 	case (MDOC_TEXT):
417 		/* No tables in this mode... */
418 		assert(NULL == h->tblt);
419 
420 		/*
421 		 * Make sure that if we're in a literal mode already
422 		 * (i.e., within a <PRE>) don't print the newline.
423 		 */
424 		if (' ' == *n->string && MDOC_LINE & n->flags)
425 			if ( ! (HTML_LITERAL & h->flags))
426 				print_otag(h, TAG_BR, 0, NULL);
427 		if (MDOC_DELIMC & n->flags)
428 			h->flags |= HTML_NOSPACE;
429 		print_text(h, n->string);
430 		if (MDOC_DELIMO & n->flags)
431 			h->flags |= HTML_NOSPACE;
432 		return;
433 	case (MDOC_EQN):
434 		print_eqn(h, n->eqn);
435 		break;
436 	case (MDOC_TBL):
437 		/*
438 		 * This will take care of initialising all of the table
439 		 * state data for the first table, then tearing it down
440 		 * for the last one.
441 		 */
442 		print_tbl(h, n->span);
443 		return;
444 	default:
445 		/*
446 		 * Close out the current table, if it's open, and unset
447 		 * the "meta" table state.  This will be reopened on the
448 		 * next table element.
449 		 */
450 		if (h->tblt) {
451 			print_tblclose(h);
452 			t = h->tags.head;
453 		}
454 
455 		assert(NULL == h->tblt);
456 		if (mdocs[n->tok].pre && ENDBODY_NOT == n->end)
457 			child = (*mdocs[n->tok].pre)(m, n, h);
458 		break;
459 	}
460 
461 	if (HTML_KEEP & h->flags) {
462 		if (n->prev && n->prev->line != n->line) {
463 			h->flags &= ~HTML_KEEP;
464 			h->flags |= HTML_PREKEEP;
465 		} else if (NULL == n->prev) {
466 			if (n->parent && n->parent->line != n->line) {
467 				h->flags &= ~HTML_KEEP;
468 				h->flags |= HTML_PREKEEP;
469 			}
470 		}
471 	}
472 
473 	if (child && n->child)
474 		print_mdoc_nodelist(m, n->child, h);
475 
476 	print_stagq(h, t);
477 
478 	switch (n->type) {
479 	case (MDOC_ROOT):
480 		mdoc_root_post(m, n, h);
481 		break;
482 	case (MDOC_EQN):
483 		break;
484 	default:
485 		if (mdocs[n->tok].post && ENDBODY_NOT == n->end)
486 			(*mdocs[n->tok].post)(m, n, h);
487 		break;
488 	}
489 }
490 
491 /* ARGSUSED */
492 static void
493 mdoc_root_post(MDOC_ARGS)
494 {
495 	struct htmlpair	 tag[3];
496 	struct tag	*t, *tt;
497 
498 	PAIR_SUMMARY_INIT(&tag[0], "Document Footer");
499 	PAIR_CLASS_INIT(&tag[1], "foot");
500 	PAIR_INIT(&tag[2], ATTR_WIDTH, "100%");
501 	t = print_otag(h, TAG_TABLE, 3, tag);
502 	PAIR_INIT(&tag[0], ATTR_WIDTH, "50%");
503 	print_otag(h, TAG_COL, 1, tag);
504 	print_otag(h, TAG_COL, 1, tag);
505 
506 	print_otag(h, TAG_TBODY, 0, NULL);
507 
508 	tt = print_otag(h, TAG_TR, 0, NULL);
509 
510 	PAIR_CLASS_INIT(&tag[0], "foot-date");
511 	print_otag(h, TAG_TD, 1, tag);
512 	print_text(h, m->date);
513 	print_stagq(h, tt);
514 
515 	PAIR_CLASS_INIT(&tag[0], "foot-os");
516 	PAIR_INIT(&tag[1], ATTR_ALIGN, "right");
517 	print_otag(h, TAG_TD, 2, tag);
518 	print_text(h, m->os);
519 	print_tagq(h, t);
520 }
521 
522 
523 /* ARGSUSED */
524 static int
525 mdoc_root_pre(MDOC_ARGS)
526 {
527 	struct htmlpair	 tag[3];
528 	struct tag	*t, *tt;
529 	char		 b[BUFSIZ], title[BUFSIZ];
530 
531 	strlcpy(b, m->vol, BUFSIZ);
532 
533 	if (m->arch) {
534 		strlcat(b, " (", BUFSIZ);
535 		strlcat(b, m->arch, BUFSIZ);
536 		strlcat(b, ")", BUFSIZ);
537 	}
538 
539 	snprintf(title, BUFSIZ - 1, "%s(%s)", m->title, m->msec);
540 
541 	PAIR_SUMMARY_INIT(&tag[0], "Document Header");
542 	PAIR_CLASS_INIT(&tag[1], "head");
543 	PAIR_INIT(&tag[2], ATTR_WIDTH, "100%");
544 	t = print_otag(h, TAG_TABLE, 3, tag);
545 	PAIR_INIT(&tag[0], ATTR_WIDTH, "30%");
546 	print_otag(h, TAG_COL, 1, tag);
547 	print_otag(h, TAG_COL, 1, tag);
548 	print_otag(h, TAG_COL, 1, tag);
549 
550 	print_otag(h, TAG_TBODY, 0, NULL);
551 
552 	tt = print_otag(h, TAG_TR, 0, NULL);
553 
554 	PAIR_CLASS_INIT(&tag[0], "head-ltitle");
555 	print_otag(h, TAG_TD, 1, tag);
556 	print_text(h, title);
557 	print_stagq(h, tt);
558 
559 	PAIR_CLASS_INIT(&tag[0], "head-vol");
560 	PAIR_INIT(&tag[1], ATTR_ALIGN, "center");
561 	print_otag(h, TAG_TD, 2, tag);
562 	print_text(h, b);
563 	print_stagq(h, tt);
564 
565 	PAIR_CLASS_INIT(&tag[0], "head-rtitle");
566 	PAIR_INIT(&tag[1], ATTR_ALIGN, "right");
567 	print_otag(h, TAG_TD, 2, tag);
568 	print_text(h, title);
569 	print_tagq(h, t);
570 	return(1);
571 }
572 
573 
574 /* ARGSUSED */
575 static int
576 mdoc_sh_pre(MDOC_ARGS)
577 {
578 	struct htmlpair	 tag;
579 
580 	if (MDOC_BLOCK == n->type) {
581 		PAIR_CLASS_INIT(&tag, "section");
582 		print_otag(h, TAG_DIV, 1, &tag);
583 		return(1);
584 	} else if (MDOC_BODY == n->type)
585 		return(1);
586 
587 	bufinit(h);
588 	bufcat(h, "x");
589 
590 	for (n = n->child; n && MDOC_TEXT == n->type; ) {
591 		bufcat_id(h, n->string);
592 		if (NULL != (n = n->next))
593 			bufcat_id(h, " ");
594 	}
595 
596 	if (NULL == n) {
597 		PAIR_ID_INIT(&tag, h->buf);
598 		print_otag(h, TAG_H1, 1, &tag);
599 	} else
600 		print_otag(h, TAG_H1, 0, NULL);
601 
602 	return(1);
603 }
604 
605 /* ARGSUSED */
606 static int
607 mdoc_ss_pre(MDOC_ARGS)
608 {
609 	struct htmlpair	 tag;
610 
611 	if (MDOC_BLOCK == n->type) {
612 		PAIR_CLASS_INIT(&tag, "subsection");
613 		print_otag(h, TAG_DIV, 1, &tag);
614 		return(1);
615 	} else if (MDOC_BODY == n->type)
616 		return(1);
617 
618 	bufinit(h);
619 	bufcat(h, "x");
620 
621 	for (n = n->child; n && MDOC_TEXT == n->type; ) {
622 		bufcat_id(h, n->string);
623 		if (NULL != (n = n->next))
624 			bufcat_id(h, " ");
625 	}
626 
627 	if (NULL == n) {
628 		PAIR_ID_INIT(&tag, h->buf);
629 		print_otag(h, TAG_H2, 1, &tag);
630 	} else
631 		print_otag(h, TAG_H2, 0, NULL);
632 
633 	return(1);
634 }
635 
636 
637 /* ARGSUSED */
638 static int
639 mdoc_fl_pre(MDOC_ARGS)
640 {
641 	struct htmlpair	 tag;
642 
643 	PAIR_CLASS_INIT(&tag, "flag");
644 	print_otag(h, TAG_B, 1, &tag);
645 
646 	/* `Cm' has no leading hyphen. */
647 
648 	if (MDOC_Cm == n->tok)
649 		return(1);
650 
651 	print_text(h, "\\-");
652 
653 	if (n->child)
654 		h->flags |= HTML_NOSPACE;
655 	else if (n->next && n->next->line == n->line)
656 		h->flags |= HTML_NOSPACE;
657 
658 	return(1);
659 }
660 
661 
662 /* ARGSUSED */
663 static int
664 mdoc_nd_pre(MDOC_ARGS)
665 {
666 	struct htmlpair	 tag;
667 
668 	if (MDOC_BODY != n->type)
669 		return(1);
670 
671 	/* XXX: this tag in theory can contain block elements. */
672 
673 	print_text(h, "\\(em");
674 	PAIR_CLASS_INIT(&tag, "desc");
675 	print_otag(h, TAG_SPAN, 1, &tag);
676 	return(1);
677 }
678 
679 
680 static int
681 mdoc_nm_pre(MDOC_ARGS)
682 {
683 	struct htmlpair	 tag;
684 	struct roffsu	 su;
685 	int		 len;
686 
687 	switch (n->type) {
688 	case (MDOC_ELEM):
689 		synopsis_pre(h, n);
690 		PAIR_CLASS_INIT(&tag, "name");
691 		print_otag(h, TAG_B, 1, &tag);
692 		if (NULL == n->child && m->name)
693 			print_text(h, m->name);
694 		return(1);
695 	case (MDOC_HEAD):
696 		print_otag(h, TAG_TD, 0, NULL);
697 		if (NULL == n->child && m->name)
698 			print_text(h, m->name);
699 		return(1);
700 	case (MDOC_BODY):
701 		print_otag(h, TAG_TD, 0, NULL);
702 		return(1);
703 	default:
704 		break;
705 	}
706 
707 	synopsis_pre(h, n);
708 	PAIR_CLASS_INIT(&tag, "synopsis");
709 	print_otag(h, TAG_TABLE, 1, &tag);
710 
711 	for (len = 0, n = n->child; n; n = n->next)
712 		if (MDOC_TEXT == n->type)
713 			len += html_strlen(n->string);
714 
715 	if (0 == len && m->name)
716 		len = html_strlen(m->name);
717 
718 	SCALE_HS_INIT(&su, (double)len);
719 	bufinit(h);
720 	bufcat_su(h, "width", &su);
721 	PAIR_STYLE_INIT(&tag, h);
722 	print_otag(h, TAG_COL, 1, &tag);
723 	print_otag(h, TAG_COL, 0, NULL);
724 	print_otag(h, TAG_TBODY, 0, NULL);
725 	print_otag(h, TAG_TR, 0, NULL);
726 	return(1);
727 }
728 
729 
730 /* ARGSUSED */
731 static int
732 mdoc_xr_pre(MDOC_ARGS)
733 {
734 	struct htmlpair	 tag[2];
735 
736 	if (NULL == n->child)
737 		return(0);
738 
739 	PAIR_CLASS_INIT(&tag[0], "link-man");
740 
741 	if (h->base_man) {
742 		buffmt_man(h, n->child->string,
743 				n->child->next ?
744 				n->child->next->string : NULL);
745 		PAIR_HREF_INIT(&tag[1], h->buf);
746 		print_otag(h, TAG_A, 2, tag);
747 	} else
748 		print_otag(h, TAG_A, 1, tag);
749 
750 	n = n->child;
751 	print_text(h, n->string);
752 
753 	if (NULL == (n = n->next))
754 		return(0);
755 
756 	h->flags |= HTML_NOSPACE;
757 	print_text(h, "(");
758 	h->flags |= HTML_NOSPACE;
759 	print_text(h, n->string);
760 	h->flags |= HTML_NOSPACE;
761 	print_text(h, ")");
762 	return(0);
763 }
764 
765 
766 /* ARGSUSED */
767 static int
768 mdoc_ns_pre(MDOC_ARGS)
769 {
770 
771 	if ( ! (MDOC_LINE & n->flags))
772 		h->flags |= HTML_NOSPACE;
773 	return(1);
774 }
775 
776 
777 /* ARGSUSED */
778 static int
779 mdoc_ar_pre(MDOC_ARGS)
780 {
781 	struct htmlpair tag;
782 
783 	PAIR_CLASS_INIT(&tag, "arg");
784 	print_otag(h, TAG_I, 1, &tag);
785 	return(1);
786 }
787 
788 
789 /* ARGSUSED */
790 static int
791 mdoc_xx_pre(MDOC_ARGS)
792 {
793 	const char	*pp;
794 	struct htmlpair	 tag;
795 	int		 flags;
796 
797 	switch (n->tok) {
798 	case (MDOC_Bsx):
799 		pp = "BSD/OS";
800 		break;
801 	case (MDOC_Dx):
802 		pp = "DragonFly";
803 		break;
804 	case (MDOC_Fx):
805 		pp = "FreeBSD";
806 		break;
807 	case (MDOC_Nx):
808 		pp = "NetBSD";
809 		break;
810 	case (MDOC_Ox):
811 		pp = "OpenBSD";
812 		break;
813 	case (MDOC_Ux):
814 		pp = "UNIX";
815 		break;
816 	default:
817 		return(1);
818 	}
819 
820 	PAIR_CLASS_INIT(&tag, "unix");
821 	print_otag(h, TAG_SPAN, 1, &tag);
822 
823 	print_text(h, pp);
824 	if (n->child) {
825 		flags = h->flags;
826 		h->flags |= HTML_KEEP;
827 		print_text(h, n->child->string);
828 		h->flags = flags;
829 	}
830 	return(0);
831 }
832 
833 
834 /* ARGSUSED */
835 static int
836 mdoc_bx_pre(MDOC_ARGS)
837 {
838 	struct htmlpair	 tag;
839 
840 	PAIR_CLASS_INIT(&tag, "unix");
841 	print_otag(h, TAG_SPAN, 1, &tag);
842 
843 	if (NULL != (n = n->child)) {
844 		print_text(h, n->string);
845 		h->flags |= HTML_NOSPACE;
846 		print_text(h, "BSD");
847 	} else {
848 		print_text(h, "BSD");
849 		return(0);
850 	}
851 
852 	if (NULL != (n = n->next)) {
853 		h->flags |= HTML_NOSPACE;
854 		print_text(h, "-");
855 		h->flags |= HTML_NOSPACE;
856 		print_text(h, n->string);
857 	}
858 
859 	return(0);
860 }
861 
862 /* ARGSUSED */
863 static int
864 mdoc_it_pre(MDOC_ARGS)
865 {
866 	struct roffsu	 su;
867 	enum mdoc_list	 type;
868 	struct htmlpair	 tag[2];
869 	const struct mdoc_node *bl;
870 
871 	bl = n->parent;
872 	while (bl && MDOC_Bl != bl->tok)
873 		bl = bl->parent;
874 
875 	assert(bl);
876 
877 	type = bl->norm->Bl.type;
878 
879 	assert(lists[type]);
880 	PAIR_CLASS_INIT(&tag[0], lists[type]);
881 
882 	bufinit(h);
883 
884 	if (MDOC_HEAD == n->type) {
885 		switch (type) {
886 		case(LIST_bullet):
887 			/* FALLTHROUGH */
888 		case(LIST_dash):
889 			/* FALLTHROUGH */
890 		case(LIST_item):
891 			/* FALLTHROUGH */
892 		case(LIST_hyphen):
893 			/* FALLTHROUGH */
894 		case(LIST_enum):
895 			return(0);
896 		case(LIST_diag):
897 			/* FALLTHROUGH */
898 		case(LIST_hang):
899 			/* FALLTHROUGH */
900 		case(LIST_inset):
901 			/* FALLTHROUGH */
902 		case(LIST_ohang):
903 			/* FALLTHROUGH */
904 		case(LIST_tag):
905 			SCALE_VS_INIT(&su, ! bl->norm->Bl.comp);
906 			bufcat_su(h, "margin-top", &su);
907 			PAIR_STYLE_INIT(&tag[1], h);
908 			print_otag(h, TAG_DT, 2, tag);
909 			if (LIST_diag != type)
910 				break;
911 			PAIR_CLASS_INIT(&tag[0], "diag");
912 			print_otag(h, TAG_B, 1, tag);
913 			break;
914 		case(LIST_column):
915 			break;
916 		default:
917 			break;
918 		}
919 	} else if (MDOC_BODY == n->type) {
920 		switch (type) {
921 		case(LIST_bullet):
922 			/* FALLTHROUGH */
923 		case(LIST_hyphen):
924 			/* FALLTHROUGH */
925 		case(LIST_dash):
926 			/* FALLTHROUGH */
927 		case(LIST_enum):
928 			/* FALLTHROUGH */
929 		case(LIST_item):
930 			SCALE_VS_INIT(&su, ! bl->norm->Bl.comp);
931 			bufcat_su(h, "margin-top", &su);
932 			PAIR_STYLE_INIT(&tag[1], h);
933 			print_otag(h, TAG_LI, 2, tag);
934 			break;
935 		case(LIST_diag):
936 			/* FALLTHROUGH */
937 		case(LIST_hang):
938 			/* FALLTHROUGH */
939 		case(LIST_inset):
940 			/* FALLTHROUGH */
941 		case(LIST_ohang):
942 			/* FALLTHROUGH */
943 		case(LIST_tag):
944 			if (NULL == bl->norm->Bl.width) {
945 				print_otag(h, TAG_DD, 1, tag);
946 				break;
947 			}
948 			a2width(bl->norm->Bl.width, &su);
949 			bufcat_su(h, "margin-left", &su);
950 			PAIR_STYLE_INIT(&tag[1], h);
951 			print_otag(h, TAG_DD, 2, tag);
952 			break;
953 		case(LIST_column):
954 			SCALE_VS_INIT(&su, ! bl->norm->Bl.comp);
955 			bufcat_su(h, "margin-top", &su);
956 			PAIR_STYLE_INIT(&tag[1], h);
957 			print_otag(h, TAG_TD, 2, tag);
958 			break;
959 		default:
960 			break;
961 		}
962 	} else {
963 		switch (type) {
964 		case (LIST_column):
965 			print_otag(h, TAG_TR, 1, tag);
966 			break;
967 		default:
968 			break;
969 		}
970 	}
971 
972 	return(1);
973 }
974 
975 /* ARGSUSED */
976 static int
977 mdoc_bl_pre(MDOC_ARGS)
978 {
979 	int		 i;
980 	struct htmlpair	 tag[3];
981 	struct roffsu	 su;
982 	char		 buf[BUFSIZ];
983 
984 	bufinit(h);
985 
986 	if (MDOC_BODY == n->type) {
987 		if (LIST_column == n->norm->Bl.type)
988 			print_otag(h, TAG_TBODY, 0, NULL);
989 		return(1);
990 	}
991 
992 	if (MDOC_HEAD == n->type) {
993 		if (LIST_column != n->norm->Bl.type)
994 			return(0);
995 
996 		/*
997 		 * For each column, print out the <COL> tag with our
998 		 * suggested width.  The last column gets min-width, as
999 		 * in terminal mode it auto-sizes to the width of the
1000 		 * screen and we want to preserve that behaviour.
1001 		 */
1002 
1003 		for (i = 0; i < (int)n->norm->Bl.ncols; i++) {
1004 			a2width(n->norm->Bl.cols[i], &su);
1005 			if (i < (int)n->norm->Bl.ncols - 1)
1006 				bufcat_su(h, "width", &su);
1007 			else
1008 				bufcat_su(h, "min-width", &su);
1009 			PAIR_STYLE_INIT(&tag[0], h);
1010 			print_otag(h, TAG_COL, 1, tag);
1011 		}
1012 
1013 		return(0);
1014 	}
1015 
1016 	SCALE_VS_INIT(&su, 0);
1017 	bufcat_su(h, "margin-top", &su);
1018 	bufcat_su(h, "margin-bottom", &su);
1019 	PAIR_STYLE_INIT(&tag[0], h);
1020 
1021 	assert(lists[n->norm->Bl.type]);
1022 	strlcpy(buf, "list ", BUFSIZ);
1023 	strlcat(buf, lists[n->norm->Bl.type], BUFSIZ);
1024 	PAIR_INIT(&tag[1], ATTR_CLASS, buf);
1025 
1026 	/* Set the block's left-hand margin. */
1027 
1028 	if (n->norm->Bl.offs) {
1029 		a2offs(n->norm->Bl.offs, &su);
1030 		bufcat_su(h, "margin-left", &su);
1031 	}
1032 
1033 	switch (n->norm->Bl.type) {
1034 	case(LIST_bullet):
1035 		/* FALLTHROUGH */
1036 	case(LIST_dash):
1037 		/* FALLTHROUGH */
1038 	case(LIST_hyphen):
1039 		/* FALLTHROUGH */
1040 	case(LIST_item):
1041 		print_otag(h, TAG_UL, 2, tag);
1042 		break;
1043 	case(LIST_enum):
1044 		print_otag(h, TAG_OL, 2, tag);
1045 		break;
1046 	case(LIST_diag):
1047 		/* FALLTHROUGH */
1048 	case(LIST_hang):
1049 		/* FALLTHROUGH */
1050 	case(LIST_inset):
1051 		/* FALLTHROUGH */
1052 	case(LIST_ohang):
1053 		/* FALLTHROUGH */
1054 	case(LIST_tag):
1055 		print_otag(h, TAG_DL, 2, tag);
1056 		break;
1057 	case(LIST_column):
1058 		print_otag(h, TAG_TABLE, 2, tag);
1059 		break;
1060 	default:
1061 		abort();
1062 		/* NOTREACHED */
1063 	}
1064 
1065 	return(1);
1066 }
1067 
1068 /* ARGSUSED */
1069 static int
1070 mdoc_ex_pre(MDOC_ARGS)
1071 {
1072 	struct tag	*t;
1073 	struct htmlpair	 tag;
1074 	int		 nchild;
1075 
1076 	if (n->prev)
1077 		print_otag(h, TAG_BR, 0, NULL);
1078 
1079 	PAIR_CLASS_INIT(&tag, "utility");
1080 
1081 	print_text(h, "The");
1082 
1083 	nchild = n->nchild;
1084 	for (n = n->child; n; n = n->next) {
1085 		assert(MDOC_TEXT == n->type);
1086 
1087 		t = print_otag(h, TAG_B, 1, &tag);
1088 		print_text(h, n->string);
1089 		print_tagq(h, t);
1090 
1091 		if (nchild > 2 && n->next) {
1092 			h->flags |= HTML_NOSPACE;
1093 			print_text(h, ",");
1094 		}
1095 
1096 		if (n->next && NULL == n->next->next)
1097 			print_text(h, "and");
1098 	}
1099 
1100 	if (nchild > 1)
1101 		print_text(h, "utilities exit");
1102 	else
1103 		print_text(h, "utility exits");
1104 
1105        	print_text(h, "0 on success, and >0 if an error occurs.");
1106 	return(0);
1107 }
1108 
1109 
1110 /* ARGSUSED */
1111 static int
1112 mdoc_em_pre(MDOC_ARGS)
1113 {
1114 	struct htmlpair	tag;
1115 
1116 	PAIR_CLASS_INIT(&tag, "emph");
1117 	print_otag(h, TAG_SPAN, 1, &tag);
1118 	return(1);
1119 }
1120 
1121 
1122 /* ARGSUSED */
1123 static int
1124 mdoc_d1_pre(MDOC_ARGS)
1125 {
1126 	struct htmlpair	 tag[2];
1127 	struct roffsu	 su;
1128 
1129 	if (MDOC_BLOCK != n->type)
1130 		return(1);
1131 
1132 	SCALE_VS_INIT(&su, 0);
1133 	bufinit(h);
1134 	bufcat_su(h, "margin-top", &su);
1135 	bufcat_su(h, "margin-bottom", &su);
1136 	PAIR_STYLE_INIT(&tag[0], h);
1137 	print_otag(h, TAG_BLOCKQUOTE, 1, tag);
1138 
1139 	/* BLOCKQUOTE needs a block body. */
1140 
1141 	PAIR_CLASS_INIT(&tag[0], "display");
1142 	print_otag(h, TAG_DIV, 1, tag);
1143 
1144 	if (MDOC_Dl == n->tok) {
1145 		PAIR_CLASS_INIT(&tag[0], "lit");
1146 		print_otag(h, TAG_CODE, 1, tag);
1147 	}
1148 
1149 	return(1);
1150 }
1151 
1152 
1153 /* ARGSUSED */
1154 static int
1155 mdoc_sx_pre(MDOC_ARGS)
1156 {
1157 	struct htmlpair	 tag[2];
1158 
1159 	bufinit(h);
1160 	bufcat(h, "#x");
1161 
1162 	for (n = n->child; n; ) {
1163 		bufcat_id(h, n->string);
1164 		if (NULL != (n = n->next))
1165 			bufcat_id(h, " ");
1166 	}
1167 
1168 	PAIR_CLASS_INIT(&tag[0], "link-sec");
1169 	PAIR_HREF_INIT(&tag[1], h->buf);
1170 
1171 	print_otag(h, TAG_I, 1, tag);
1172 	print_otag(h, TAG_A, 2, tag);
1173 	return(1);
1174 }
1175 
1176 
1177 /* ARGSUSED */
1178 static int
1179 mdoc_bd_pre(MDOC_ARGS)
1180 {
1181 	struct htmlpair	 	 tag[2];
1182 	int		 	 comp, sv;
1183 	const struct mdoc_node	*nn;
1184 	struct roffsu		 su;
1185 
1186 	if (MDOC_HEAD == n->type)
1187 		return(0);
1188 
1189 	if (MDOC_BLOCK == n->type) {
1190 		comp = n->norm->Bd.comp;
1191 		for (nn = n; nn && ! comp; nn = nn->parent) {
1192 			if (MDOC_BLOCK != nn->type)
1193 				continue;
1194 			if (MDOC_Ss == nn->tok || MDOC_Sh == nn->tok)
1195 				comp = 1;
1196 			if (nn->prev)
1197 				break;
1198 		}
1199 		if ( ! comp)
1200 			print_otag(h, TAG_P, 0, NULL);
1201 		return(1);
1202 	}
1203 
1204 	SCALE_HS_INIT(&su, 0);
1205 	if (n->norm->Bd.offs)
1206 		a2offs(n->norm->Bd.offs, &su);
1207 
1208 	bufinit(h);
1209 	bufcat_su(h, "margin-left", &su);
1210 	PAIR_STYLE_INIT(&tag[0], h);
1211 
1212 	if (DISP_unfilled != n->norm->Bd.type &&
1213 			DISP_literal != n->norm->Bd.type) {
1214 		PAIR_CLASS_INIT(&tag[1], "display");
1215 		print_otag(h, TAG_DIV, 2, tag);
1216 		return(1);
1217 	}
1218 
1219 	PAIR_CLASS_INIT(&tag[1], "lit display");
1220 	print_otag(h, TAG_PRE, 2, tag);
1221 
1222 	/* This can be recursive: save & set our literal state. */
1223 
1224 	sv = h->flags & HTML_LITERAL;
1225 	h->flags |= HTML_LITERAL;
1226 
1227 	for (nn = n->child; nn; nn = nn->next) {
1228 		print_mdoc_node(m, nn, h);
1229 		/*
1230 		 * If the printed node flushes its own line, then we
1231 		 * needn't do it here as well.  This is hacky, but the
1232 		 * notion of selective eoln whitespace is pretty dumb
1233 		 * anyway, so don't sweat it.
1234 		 */
1235 		switch (nn->tok) {
1236 		case (MDOC_Sm):
1237 			/* FALLTHROUGH */
1238 		case (MDOC_br):
1239 			/* FALLTHROUGH */
1240 		case (MDOC_sp):
1241 			/* FALLTHROUGH */
1242 		case (MDOC_Bl):
1243 			/* FALLTHROUGH */
1244 		case (MDOC_D1):
1245 			/* FALLTHROUGH */
1246 		case (MDOC_Dl):
1247 			/* FALLTHROUGH */
1248 		case (MDOC_Lp):
1249 			/* FALLTHROUGH */
1250 		case (MDOC_Pp):
1251 			continue;
1252 		default:
1253 			break;
1254 		}
1255 		if (nn->next && nn->next->line == nn->line)
1256 			continue;
1257 		else if (nn->next)
1258 			print_text(h, "\n");
1259 
1260 		h->flags |= HTML_NOSPACE;
1261 	}
1262 
1263 	if (0 == sv)
1264 		h->flags &= ~HTML_LITERAL;
1265 
1266 	return(0);
1267 }
1268 
1269 
1270 /* ARGSUSED */
1271 static int
1272 mdoc_pa_pre(MDOC_ARGS)
1273 {
1274 	struct htmlpair	tag;
1275 
1276 	PAIR_CLASS_INIT(&tag, "file");
1277 	print_otag(h, TAG_I, 1, &tag);
1278 	return(1);
1279 }
1280 
1281 
1282 /* ARGSUSED */
1283 static int
1284 mdoc_ad_pre(MDOC_ARGS)
1285 {
1286 	struct htmlpair	tag;
1287 
1288 	PAIR_CLASS_INIT(&tag, "addr");
1289 	print_otag(h, TAG_I, 1, &tag);
1290 	return(1);
1291 }
1292 
1293 
1294 /* ARGSUSED */
1295 static int
1296 mdoc_an_pre(MDOC_ARGS)
1297 {
1298 	struct htmlpair	tag;
1299 
1300 	/* TODO: -split and -nosplit (see termp_an_pre()). */
1301 
1302 	PAIR_CLASS_INIT(&tag, "author");
1303 	print_otag(h, TAG_SPAN, 1, &tag);
1304 	return(1);
1305 }
1306 
1307 
1308 /* ARGSUSED */
1309 static int
1310 mdoc_cd_pre(MDOC_ARGS)
1311 {
1312 	struct htmlpair	tag;
1313 
1314 	synopsis_pre(h, n);
1315 	PAIR_CLASS_INIT(&tag, "config");
1316 	print_otag(h, TAG_B, 1, &tag);
1317 	return(1);
1318 }
1319 
1320 
1321 /* ARGSUSED */
1322 static int
1323 mdoc_dv_pre(MDOC_ARGS)
1324 {
1325 	struct htmlpair	tag;
1326 
1327 	PAIR_CLASS_INIT(&tag, "define");
1328 	print_otag(h, TAG_SPAN, 1, &tag);
1329 	return(1);
1330 }
1331 
1332 
1333 /* ARGSUSED */
1334 static int
1335 mdoc_ev_pre(MDOC_ARGS)
1336 {
1337 	struct htmlpair	tag;
1338 
1339 	PAIR_CLASS_INIT(&tag, "env");
1340 	print_otag(h, TAG_SPAN, 1, &tag);
1341 	return(1);
1342 }
1343 
1344 
1345 /* ARGSUSED */
1346 static int
1347 mdoc_er_pre(MDOC_ARGS)
1348 {
1349 	struct htmlpair	tag;
1350 
1351 	PAIR_CLASS_INIT(&tag, "errno");
1352 	print_otag(h, TAG_SPAN, 1, &tag);
1353 	return(1);
1354 }
1355 
1356 
1357 /* ARGSUSED */
1358 static int
1359 mdoc_fa_pre(MDOC_ARGS)
1360 {
1361 	const struct mdoc_node	*nn;
1362 	struct htmlpair		 tag;
1363 	struct tag		*t;
1364 
1365 	PAIR_CLASS_INIT(&tag, "farg");
1366 	if (n->parent->tok != MDOC_Fo) {
1367 		print_otag(h, TAG_I, 1, &tag);
1368 		return(1);
1369 	}
1370 
1371 	for (nn = n->child; nn; nn = nn->next) {
1372 		t = print_otag(h, TAG_I, 1, &tag);
1373 		print_text(h, nn->string);
1374 		print_tagq(h, t);
1375 		if (nn->next) {
1376 			h->flags |= HTML_NOSPACE;
1377 			print_text(h, ",");
1378 		}
1379 	}
1380 
1381 	if (n->child && n->next && n->next->tok == MDOC_Fa) {
1382 		h->flags |= HTML_NOSPACE;
1383 		print_text(h, ",");
1384 	}
1385 
1386 	return(0);
1387 }
1388 
1389 
1390 /* ARGSUSED */
1391 static int
1392 mdoc_fd_pre(MDOC_ARGS)
1393 {
1394 	struct htmlpair	 tag[2];
1395 	char		 buf[BUFSIZ];
1396 	size_t		 sz;
1397 	int		 i;
1398 	struct tag	*t;
1399 
1400 	synopsis_pre(h, n);
1401 
1402 	if (NULL == (n = n->child))
1403 		return(0);
1404 
1405 	assert(MDOC_TEXT == n->type);
1406 
1407 	if (strcmp(n->string, "#include")) {
1408 		PAIR_CLASS_INIT(&tag[0], "macro");
1409 		print_otag(h, TAG_B, 1, tag);
1410 		return(1);
1411 	}
1412 
1413 	PAIR_CLASS_INIT(&tag[0], "includes");
1414 	print_otag(h, TAG_B, 1, tag);
1415 	print_text(h, n->string);
1416 
1417 	if (NULL != (n = n->next)) {
1418 		assert(MDOC_TEXT == n->type);
1419 		strlcpy(buf, '<' == *n->string || '"' == *n->string ?
1420 				n->string + 1 : n->string, BUFSIZ);
1421 
1422 		sz = strlen(buf);
1423 		if (sz && ('>' == buf[sz - 1] || '"' == buf[sz - 1]))
1424 			buf[sz - 1] = '\0';
1425 
1426 		PAIR_CLASS_INIT(&tag[0], "link-includes");
1427 
1428 		i = 1;
1429 		if (h->base_includes) {
1430 			buffmt_includes(h, buf);
1431 			PAIR_HREF_INIT(&tag[i], h->buf);
1432 			i++;
1433 		}
1434 
1435 		t = print_otag(h, TAG_A, i, tag);
1436 		print_text(h, n->string);
1437 		print_tagq(h, t);
1438 
1439 		n = n->next;
1440 	}
1441 
1442 	for ( ; n; n = n->next) {
1443 		assert(MDOC_TEXT == n->type);
1444 		print_text(h, n->string);
1445 	}
1446 
1447 	return(0);
1448 }
1449 
1450 
1451 /* ARGSUSED */
1452 static int
1453 mdoc_vt_pre(MDOC_ARGS)
1454 {
1455 	struct htmlpair	 tag;
1456 
1457 	if (MDOC_BLOCK == n->type) {
1458 		synopsis_pre(h, n);
1459 		return(1);
1460 	} else if (MDOC_ELEM == n->type) {
1461 		synopsis_pre(h, n);
1462 	} else if (MDOC_HEAD == n->type)
1463 		return(0);
1464 
1465 	PAIR_CLASS_INIT(&tag, "type");
1466 	print_otag(h, TAG_SPAN, 1, &tag);
1467 	return(1);
1468 }
1469 
1470 
1471 /* ARGSUSED */
1472 static int
1473 mdoc_ft_pre(MDOC_ARGS)
1474 {
1475 	struct htmlpair	 tag;
1476 
1477 	synopsis_pre(h, n);
1478 	PAIR_CLASS_INIT(&tag, "ftype");
1479 	print_otag(h, TAG_I, 1, &tag);
1480 	return(1);
1481 }
1482 
1483 
1484 /* ARGSUSED */
1485 static int
1486 mdoc_fn_pre(MDOC_ARGS)
1487 {
1488 	struct tag	*t;
1489 	struct htmlpair	 tag[2];
1490 	char		 nbuf[BUFSIZ];
1491 	const char	*sp, *ep;
1492 	int		 sz, i, pretty;
1493 
1494 	pretty = MDOC_SYNPRETTY & n->flags;
1495 	synopsis_pre(h, n);
1496 
1497 	/* Split apart into type and name. */
1498 	assert(n->child->string);
1499 	sp = n->child->string;
1500 
1501 	ep = strchr(sp, ' ');
1502 	if (NULL != ep) {
1503 		PAIR_CLASS_INIT(&tag[0], "ftype");
1504 		t = print_otag(h, TAG_I, 1, tag);
1505 
1506 		while (ep) {
1507 			sz = MIN((int)(ep - sp), BUFSIZ - 1);
1508 			(void)memcpy(nbuf, sp, (size_t)sz);
1509 			nbuf[sz] = '\0';
1510 			print_text(h, nbuf);
1511 			sp = ++ep;
1512 			ep = strchr(sp, ' ');
1513 		}
1514 		print_tagq(h, t);
1515 	}
1516 
1517 	PAIR_CLASS_INIT(&tag[0], "fname");
1518 
1519 	/*
1520 	 * FIXME: only refer to IDs that we know exist.
1521 	 */
1522 
1523 #if 0
1524 	if (MDOC_SYNPRETTY & n->flags) {
1525 		nbuf[0] = '\0';
1526 		html_idcat(nbuf, sp, BUFSIZ);
1527 		PAIR_ID_INIT(&tag[1], nbuf);
1528 	} else {
1529 		strlcpy(nbuf, "#", BUFSIZ);
1530 		html_idcat(nbuf, sp, BUFSIZ);
1531 		PAIR_HREF_INIT(&tag[1], nbuf);
1532 	}
1533 #endif
1534 
1535 	t = print_otag(h, TAG_B, 1, tag);
1536 
1537 	if (sp) {
1538 		strlcpy(nbuf, sp, BUFSIZ);
1539 		print_text(h, nbuf);
1540 	}
1541 
1542 	print_tagq(h, t);
1543 
1544 	h->flags |= HTML_NOSPACE;
1545 	print_text(h, "(");
1546 	h->flags |= HTML_NOSPACE;
1547 
1548 	PAIR_CLASS_INIT(&tag[0], "farg");
1549 	bufinit(h);
1550 	bufcat_style(h, "white-space", "nowrap");
1551 	PAIR_STYLE_INIT(&tag[1], h);
1552 
1553 	for (n = n->child->next; n; n = n->next) {
1554 		i = 1;
1555 		if (MDOC_SYNPRETTY & n->flags)
1556 			i = 2;
1557 		t = print_otag(h, TAG_I, i, tag);
1558 		print_text(h, n->string);
1559 		print_tagq(h, t);
1560 		if (n->next) {
1561 			h->flags |= HTML_NOSPACE;
1562 			print_text(h, ",");
1563 		}
1564 	}
1565 
1566 	h->flags |= HTML_NOSPACE;
1567 	print_text(h, ")");
1568 
1569 	if (pretty) {
1570 		h->flags |= HTML_NOSPACE;
1571 		print_text(h, ";");
1572 	}
1573 
1574 	return(0);
1575 }
1576 
1577 
1578 /* ARGSUSED */
1579 static int
1580 mdoc_sm_pre(MDOC_ARGS)
1581 {
1582 
1583 	assert(n->child && MDOC_TEXT == n->child->type);
1584 	if (0 == strcmp("on", n->child->string)) {
1585 		/*
1586 		 * FIXME: no p->col to check.  Thus, if we have
1587 		 *  .Bd -literal
1588 		 *  .Sm off
1589 		 *  1 2
1590 		 *  .Sm on
1591 		 *  3
1592 		 *  .Ed
1593 		 * the "3" is preceded by a space.
1594 		 */
1595 		h->flags &= ~HTML_NOSPACE;
1596 		h->flags &= ~HTML_NONOSPACE;
1597 	} else
1598 		h->flags |= HTML_NONOSPACE;
1599 
1600 	return(0);
1601 }
1602 
1603 /* ARGSUSED */
1604 static int
1605 mdoc_pp_pre(MDOC_ARGS)
1606 {
1607 
1608 	print_otag(h, TAG_P, 0, NULL);
1609 	return(0);
1610 
1611 }
1612 
1613 /* ARGSUSED */
1614 static int
1615 mdoc_sp_pre(MDOC_ARGS)
1616 {
1617 	struct roffsu	 su;
1618 	struct htmlpair	 tag;
1619 
1620 	SCALE_VS_INIT(&su, 1);
1621 
1622 	if (MDOC_sp == n->tok) {
1623 		if (NULL != (n = n->child))
1624 			if ( ! a2roffsu(n->string, &su, SCALE_VS))
1625 				SCALE_VS_INIT(&su, atoi(n->string));
1626 	} else
1627 		su.scale = 0;
1628 
1629 	bufinit(h);
1630 	bufcat_su(h, "height", &su);
1631 	PAIR_STYLE_INIT(&tag, h);
1632 	print_otag(h, TAG_DIV, 1, &tag);
1633 
1634 	/* So the div isn't empty: */
1635 	print_text(h, "\\~");
1636 
1637 	return(0);
1638 
1639 }
1640 
1641 /* ARGSUSED */
1642 static int
1643 mdoc_lk_pre(MDOC_ARGS)
1644 {
1645 	struct htmlpair	 tag[2];
1646 
1647 	if (NULL == (n = n->child))
1648 		return(0);
1649 
1650 	assert(MDOC_TEXT == n->type);
1651 
1652 	PAIR_CLASS_INIT(&tag[0], "link-ext");
1653 	PAIR_HREF_INIT(&tag[1], n->string);
1654 
1655 	print_otag(h, TAG_A, 2, tag);
1656 
1657 	if (NULL == n->next)
1658 		print_text(h, n->string);
1659 
1660 	for (n = n->next; n; n = n->next)
1661 		print_text(h, n->string);
1662 
1663 	return(0);
1664 }
1665 
1666 
1667 /* ARGSUSED */
1668 static int
1669 mdoc_mt_pre(MDOC_ARGS)
1670 {
1671 	struct htmlpair	 tag[2];
1672 	struct tag	*t;
1673 
1674 	PAIR_CLASS_INIT(&tag[0], "link-mail");
1675 
1676 	for (n = n->child; n; n = n->next) {
1677 		assert(MDOC_TEXT == n->type);
1678 
1679 		bufinit(h);
1680 		bufcat(h, "mailto:");
1681 		bufcat(h, n->string);
1682 
1683 		PAIR_HREF_INIT(&tag[1], h->buf);
1684 		t = print_otag(h, TAG_A, 2, tag);
1685 		print_text(h, n->string);
1686 		print_tagq(h, t);
1687 	}
1688 
1689 	return(0);
1690 }
1691 
1692 
1693 /* ARGSUSED */
1694 static int
1695 mdoc_fo_pre(MDOC_ARGS)
1696 {
1697 	struct htmlpair	 tag;
1698 	struct tag	*t;
1699 
1700 	if (MDOC_BODY == n->type) {
1701 		h->flags |= HTML_NOSPACE;
1702 		print_text(h, "(");
1703 		h->flags |= HTML_NOSPACE;
1704 		return(1);
1705 	} else if (MDOC_BLOCK == n->type) {
1706 		synopsis_pre(h, n);
1707 		return(1);
1708 	}
1709 
1710 	/* XXX: we drop non-initial arguments as per groff. */
1711 
1712 	assert(n->child);
1713 	assert(n->child->string);
1714 
1715 	PAIR_CLASS_INIT(&tag, "fname");
1716 	t = print_otag(h, TAG_B, 1, &tag);
1717 	print_text(h, n->child->string);
1718 	print_tagq(h, t);
1719 	return(0);
1720 }
1721 
1722 
1723 /* ARGSUSED */
1724 static void
1725 mdoc_fo_post(MDOC_ARGS)
1726 {
1727 
1728 	if (MDOC_BODY != n->type)
1729 		return;
1730 	h->flags |= HTML_NOSPACE;
1731 	print_text(h, ")");
1732 	h->flags |= HTML_NOSPACE;
1733 	print_text(h, ";");
1734 }
1735 
1736 
1737 /* ARGSUSED */
1738 static int
1739 mdoc_in_pre(MDOC_ARGS)
1740 {
1741 	struct tag	*t;
1742 	struct htmlpair	 tag[2];
1743 	int		 i;
1744 
1745 	synopsis_pre(h, n);
1746 
1747 	PAIR_CLASS_INIT(&tag[0], "includes");
1748 	print_otag(h, TAG_B, 1, tag);
1749 
1750 	/*
1751 	 * The first argument of the `In' gets special treatment as
1752 	 * being a linked value.  Subsequent values are printed
1753 	 * afterward.  groff does similarly.  This also handles the case
1754 	 * of no children.
1755 	 */
1756 
1757 	if (MDOC_SYNPRETTY & n->flags && MDOC_LINE & n->flags)
1758 		print_text(h, "#include");
1759 
1760 	print_text(h, "<");
1761 	h->flags |= HTML_NOSPACE;
1762 
1763 	if (NULL != (n = n->child)) {
1764 		assert(MDOC_TEXT == n->type);
1765 
1766 		PAIR_CLASS_INIT(&tag[0], "link-includes");
1767 
1768 		i = 1;
1769 		if (h->base_includes) {
1770 			buffmt_includes(h, n->string);
1771 			PAIR_HREF_INIT(&tag[i], h->buf);
1772 			i++;
1773 		}
1774 
1775 		t = print_otag(h, TAG_A, i, tag);
1776 		print_text(h, n->string);
1777 		print_tagq(h, t);
1778 
1779 		n = n->next;
1780 	}
1781 
1782 	h->flags |= HTML_NOSPACE;
1783 	print_text(h, ">");
1784 
1785 	for ( ; n; n = n->next) {
1786 		assert(MDOC_TEXT == n->type);
1787 		print_text(h, n->string);
1788 	}
1789 
1790 	return(0);
1791 }
1792 
1793 
1794 /* ARGSUSED */
1795 static int
1796 mdoc_ic_pre(MDOC_ARGS)
1797 {
1798 	struct htmlpair	tag;
1799 
1800 	PAIR_CLASS_INIT(&tag, "cmd");
1801 	print_otag(h, TAG_B, 1, &tag);
1802 	return(1);
1803 }
1804 
1805 
1806 /* ARGSUSED */
1807 static int
1808 mdoc_rv_pre(MDOC_ARGS)
1809 {
1810 	struct htmlpair	 tag;
1811 	struct tag	*t;
1812 	int		 nchild;
1813 
1814 	if (n->prev)
1815 		print_otag(h, TAG_BR, 0, NULL);
1816 
1817 	PAIR_CLASS_INIT(&tag, "fname");
1818 
1819 	print_text(h, "The");
1820 
1821 	nchild = n->nchild;
1822 	for (n = n->child; n; n = n->next) {
1823 		assert(MDOC_TEXT == n->type);
1824 
1825 		t = print_otag(h, TAG_B, 1, &tag);
1826 		print_text(h, n->string);
1827 		print_tagq(h, t);
1828 
1829 		h->flags |= HTML_NOSPACE;
1830 		print_text(h, "()");
1831 
1832 		if (nchild > 2 && n->next) {
1833 			h->flags |= HTML_NOSPACE;
1834 			print_text(h, ",");
1835 		}
1836 
1837 		if (n->next && NULL == n->next->next)
1838 			print_text(h, "and");
1839 	}
1840 
1841 	if (nchild > 1)
1842 		print_text(h, "functions return");
1843 	else
1844 		print_text(h, "function returns");
1845 
1846        	print_text(h, "the value 0 if successful; otherwise the value "
1847 			"-1 is returned and the global variable");
1848 
1849 	PAIR_CLASS_INIT(&tag, "var");
1850 	t = print_otag(h, TAG_B, 1, &tag);
1851 	print_text(h, "errno");
1852 	print_tagq(h, t);
1853        	print_text(h, "is set to indicate the error.");
1854 	return(0);
1855 }
1856 
1857 
1858 /* ARGSUSED */
1859 static int
1860 mdoc_va_pre(MDOC_ARGS)
1861 {
1862 	struct htmlpair	tag;
1863 
1864 	PAIR_CLASS_INIT(&tag, "var");
1865 	print_otag(h, TAG_B, 1, &tag);
1866 	return(1);
1867 }
1868 
1869 
1870 /* ARGSUSED */
1871 static int
1872 mdoc_ap_pre(MDOC_ARGS)
1873 {
1874 
1875 	h->flags |= HTML_NOSPACE;
1876 	print_text(h, "\\(aq");
1877 	h->flags |= HTML_NOSPACE;
1878 	return(1);
1879 }
1880 
1881 
1882 /* ARGSUSED */
1883 static int
1884 mdoc_bf_pre(MDOC_ARGS)
1885 {
1886 	struct htmlpair	 tag[2];
1887 	struct roffsu	 su;
1888 
1889 	if (MDOC_HEAD == n->type)
1890 		return(0);
1891 	else if (MDOC_BODY != n->type)
1892 		return(1);
1893 
1894 	if (FONT_Em == n->norm->Bf.font)
1895 		PAIR_CLASS_INIT(&tag[0], "emph");
1896 	else if (FONT_Sy == n->norm->Bf.font)
1897 		PAIR_CLASS_INIT(&tag[0], "symb");
1898 	else if (FONT_Li == n->norm->Bf.font)
1899 		PAIR_CLASS_INIT(&tag[0], "lit");
1900 	else
1901 		PAIR_CLASS_INIT(&tag[0], "none");
1902 
1903 	/*
1904 	 * We want this to be inline-formatted, but needs to be div to
1905 	 * accept block children.
1906 	 */
1907 	bufinit(h);
1908 	bufcat_style(h, "display", "inline");
1909 	SCALE_HS_INIT(&su, 1);
1910 	/* Needs a left-margin for spacing. */
1911 	bufcat_su(h, "margin-left", &su);
1912 	PAIR_STYLE_INIT(&tag[1], h);
1913 	print_otag(h, TAG_DIV, 2, tag);
1914 	return(1);
1915 }
1916 
1917 
1918 /* ARGSUSED */
1919 static int
1920 mdoc_ms_pre(MDOC_ARGS)
1921 {
1922 	struct htmlpair	tag;
1923 
1924 	PAIR_CLASS_INIT(&tag, "symb");
1925 	print_otag(h, TAG_SPAN, 1, &tag);
1926 	return(1);
1927 }
1928 
1929 
1930 /* ARGSUSED */
1931 static int
1932 mdoc_igndelim_pre(MDOC_ARGS)
1933 {
1934 
1935 	h->flags |= HTML_IGNDELIM;
1936 	return(1);
1937 }
1938 
1939 
1940 /* ARGSUSED */
1941 static void
1942 mdoc_pf_post(MDOC_ARGS)
1943 {
1944 
1945 	h->flags |= HTML_NOSPACE;
1946 }
1947 
1948 
1949 /* ARGSUSED */
1950 static int
1951 mdoc_rs_pre(MDOC_ARGS)
1952 {
1953 	struct htmlpair	 tag;
1954 
1955 	if (MDOC_BLOCK != n->type)
1956 		return(1);
1957 
1958 	if (n->prev && SEC_SEE_ALSO == n->sec)
1959 		print_otag(h, TAG_P, 0, NULL);
1960 
1961 	PAIR_CLASS_INIT(&tag, "ref");
1962 	print_otag(h, TAG_SPAN, 1, &tag);
1963 	return(1);
1964 }
1965 
1966 
1967 
1968 /* ARGSUSED */
1969 static int
1970 mdoc_li_pre(MDOC_ARGS)
1971 {
1972 	struct htmlpair	tag;
1973 
1974 	PAIR_CLASS_INIT(&tag, "lit");
1975 	print_otag(h, TAG_CODE, 1, &tag);
1976 	return(1);
1977 }
1978 
1979 
1980 /* ARGSUSED */
1981 static int
1982 mdoc_sy_pre(MDOC_ARGS)
1983 {
1984 	struct htmlpair	tag;
1985 
1986 	PAIR_CLASS_INIT(&tag, "symb");
1987 	print_otag(h, TAG_SPAN, 1, &tag);
1988 	return(1);
1989 }
1990 
1991 
1992 /* ARGSUSED */
1993 static int
1994 mdoc_bt_pre(MDOC_ARGS)
1995 {
1996 
1997 	print_text(h, "is currently in beta test.");
1998 	return(0);
1999 }
2000 
2001 
2002 /* ARGSUSED */
2003 static int
2004 mdoc_ud_pre(MDOC_ARGS)
2005 {
2006 
2007 	print_text(h, "currently under development.");
2008 	return(0);
2009 }
2010 
2011 
2012 /* ARGSUSED */
2013 static int
2014 mdoc_lb_pre(MDOC_ARGS)
2015 {
2016 	struct htmlpair	tag;
2017 
2018 	if (SEC_LIBRARY == n->sec && MDOC_LINE & n->flags && n->prev)
2019 		print_otag(h, TAG_BR, 0, NULL);
2020 
2021 	PAIR_CLASS_INIT(&tag, "lib");
2022 	print_otag(h, TAG_SPAN, 1, &tag);
2023 	return(1);
2024 }
2025 
2026 
2027 /* ARGSUSED */
2028 static int
2029 mdoc__x_pre(MDOC_ARGS)
2030 {
2031 	struct htmlpair	tag[2];
2032 	enum htmltag	t;
2033 
2034 	t = TAG_SPAN;
2035 
2036 	switch (n->tok) {
2037 	case(MDOC__A):
2038 		PAIR_CLASS_INIT(&tag[0], "ref-auth");
2039 		if (n->prev && MDOC__A == n->prev->tok)
2040 			if (NULL == n->next || MDOC__A != n->next->tok)
2041 				print_text(h, "and");
2042 		break;
2043 	case(MDOC__B):
2044 		PAIR_CLASS_INIT(&tag[0], "ref-book");
2045 		t = TAG_I;
2046 		break;
2047 	case(MDOC__C):
2048 		PAIR_CLASS_INIT(&tag[0], "ref-city");
2049 		break;
2050 	case(MDOC__D):
2051 		PAIR_CLASS_INIT(&tag[0], "ref-date");
2052 		break;
2053 	case(MDOC__I):
2054 		PAIR_CLASS_INIT(&tag[0], "ref-issue");
2055 		t = TAG_I;
2056 		break;
2057 	case(MDOC__J):
2058 		PAIR_CLASS_INIT(&tag[0], "ref-jrnl");
2059 		t = TAG_I;
2060 		break;
2061 	case(MDOC__N):
2062 		PAIR_CLASS_INIT(&tag[0], "ref-num");
2063 		break;
2064 	case(MDOC__O):
2065 		PAIR_CLASS_INIT(&tag[0], "ref-opt");
2066 		break;
2067 	case(MDOC__P):
2068 		PAIR_CLASS_INIT(&tag[0], "ref-page");
2069 		break;
2070 	case(MDOC__Q):
2071 		PAIR_CLASS_INIT(&tag[0], "ref-corp");
2072 		break;
2073 	case(MDOC__R):
2074 		PAIR_CLASS_INIT(&tag[0], "ref-rep");
2075 		break;
2076 	case(MDOC__T):
2077 		PAIR_CLASS_INIT(&tag[0], "ref-title");
2078 		break;
2079 	case(MDOC__U):
2080 		PAIR_CLASS_INIT(&tag[0], "link-ref");
2081 		break;
2082 	case(MDOC__V):
2083 		PAIR_CLASS_INIT(&tag[0], "ref-vol");
2084 		break;
2085 	default:
2086 		abort();
2087 		/* NOTREACHED */
2088 	}
2089 
2090 	if (MDOC__U != n->tok) {
2091 		print_otag(h, t, 1, tag);
2092 		return(1);
2093 	}
2094 
2095 	PAIR_HREF_INIT(&tag[1], n->child->string);
2096 	print_otag(h, TAG_A, 2, tag);
2097 
2098 	return(1);
2099 }
2100 
2101 
2102 /* ARGSUSED */
2103 static void
2104 mdoc__x_post(MDOC_ARGS)
2105 {
2106 
2107 	if (MDOC__A == n->tok && n->next && MDOC__A == n->next->tok)
2108 		if (NULL == n->next->next || MDOC__A != n->next->next->tok)
2109 			if (NULL == n->prev || MDOC__A != n->prev->tok)
2110 				return;
2111 
2112 	/* TODO: %U */
2113 
2114 	if (NULL == n->parent || MDOC_Rs != n->parent->tok)
2115 		return;
2116 
2117 	h->flags |= HTML_NOSPACE;
2118 	print_text(h, n->next ? "," : ".");
2119 }
2120 
2121 
2122 /* ARGSUSED */
2123 static int
2124 mdoc_bk_pre(MDOC_ARGS)
2125 {
2126 
2127 	switch (n->type) {
2128 	case (MDOC_BLOCK):
2129 		break;
2130 	case (MDOC_HEAD):
2131 		return(0);
2132 	case (MDOC_BODY):
2133 		if (n->parent->args || 0 == n->prev->nchild)
2134 			h->flags |= HTML_PREKEEP;
2135 		break;
2136 	default:
2137 		abort();
2138 		/* NOTREACHED */
2139 	}
2140 
2141 	return(1);
2142 }
2143 
2144 
2145 /* ARGSUSED */
2146 static void
2147 mdoc_bk_post(MDOC_ARGS)
2148 {
2149 
2150 	if (MDOC_BODY == n->type)
2151 		h->flags &= ~(HTML_KEEP | HTML_PREKEEP);
2152 }
2153 
2154 
2155 /* ARGSUSED */
2156 static int
2157 mdoc_quote_pre(MDOC_ARGS)
2158 {
2159 	struct htmlpair	tag;
2160 
2161 	if (MDOC_BODY != n->type)
2162 		return(1);
2163 
2164 	switch (n->tok) {
2165 	case (MDOC_Ao):
2166 		/* FALLTHROUGH */
2167 	case (MDOC_Aq):
2168 		print_text(h, "\\(la");
2169 		break;
2170 	case (MDOC_Bro):
2171 		/* FALLTHROUGH */
2172 	case (MDOC_Brq):
2173 		print_text(h, "\\(lC");
2174 		break;
2175 	case (MDOC_Bo):
2176 		/* FALLTHROUGH */
2177 	case (MDOC_Bq):
2178 		print_text(h, "\\(lB");
2179 		break;
2180 	case (MDOC_Oo):
2181 		/* FALLTHROUGH */
2182 	case (MDOC_Op):
2183 		print_text(h, "\\(lB");
2184 		h->flags |= HTML_NOSPACE;
2185 		PAIR_CLASS_INIT(&tag, "opt");
2186 		print_otag(h, TAG_SPAN, 1, &tag);
2187 		break;
2188 	case (MDOC_Eo):
2189 		break;
2190 	case (MDOC_Do):
2191 		/* FALLTHROUGH */
2192 	case (MDOC_Dq):
2193 		/* FALLTHROUGH */
2194 	case (MDOC_Qo):
2195 		/* FALLTHROUGH */
2196 	case (MDOC_Qq):
2197 		print_text(h, "\\(lq");
2198 		break;
2199 	case (MDOC_Po):
2200 		/* FALLTHROUGH */
2201 	case (MDOC_Pq):
2202 		print_text(h, "(");
2203 		break;
2204 	case (MDOC_Ql):
2205 		print_text(h, "\\(oq");
2206 		h->flags |= HTML_NOSPACE;
2207 		PAIR_CLASS_INIT(&tag, "lit");
2208 		print_otag(h, TAG_CODE, 1, &tag);
2209 		break;
2210 	case (MDOC_So):
2211 		/* FALLTHROUGH */
2212 	case (MDOC_Sq):
2213 		print_text(h, "\\(oq");
2214 		break;
2215 	default:
2216 		abort();
2217 		/* NOTREACHED */
2218 	}
2219 
2220 	h->flags |= HTML_NOSPACE;
2221 	return(1);
2222 }
2223 
2224 
2225 /* ARGSUSED */
2226 static void
2227 mdoc_quote_post(MDOC_ARGS)
2228 {
2229 
2230 	if (MDOC_BODY != n->type)
2231 		return;
2232 
2233 	h->flags |= HTML_NOSPACE;
2234 
2235 	switch (n->tok) {
2236 	case (MDOC_Ao):
2237 		/* FALLTHROUGH */
2238 	case (MDOC_Aq):
2239 		print_text(h, "\\(ra");
2240 		break;
2241 	case (MDOC_Bro):
2242 		/* FALLTHROUGH */
2243 	case (MDOC_Brq):
2244 		print_text(h, "\\(rC");
2245 		break;
2246 	case (MDOC_Oo):
2247 		/* FALLTHROUGH */
2248 	case (MDOC_Op):
2249 		/* FALLTHROUGH */
2250 	case (MDOC_Bo):
2251 		/* FALLTHROUGH */
2252 	case (MDOC_Bq):
2253 		print_text(h, "\\(rB");
2254 		break;
2255 	case (MDOC_Eo):
2256 		break;
2257 	case (MDOC_Qo):
2258 		/* FALLTHROUGH */
2259 	case (MDOC_Qq):
2260 		/* FALLTHROUGH */
2261 	case (MDOC_Do):
2262 		/* FALLTHROUGH */
2263 	case (MDOC_Dq):
2264 		print_text(h, "\\(rq");
2265 		break;
2266 	case (MDOC_Po):
2267 		/* FALLTHROUGH */
2268 	case (MDOC_Pq):
2269 		print_text(h, ")");
2270 		break;
2271 	case (MDOC_Ql):
2272 		/* FALLTHROUGH */
2273 	case (MDOC_So):
2274 		/* FALLTHROUGH */
2275 	case (MDOC_Sq):
2276 		print_text(h, "\\(aq");
2277 		break;
2278 	default:
2279 		abort();
2280 		/* NOTREACHED */
2281 	}
2282 }
2283 
2284 
2285