xref: /minix/external/bsd/mdocml/dist/mdoc_man.c (revision 0a6a1f1d)
1 /*	Id: mdoc_man.c,v 1.57 2013/12/25 22:00:45 schwarze Exp  */
2 /*
3  * Copyright (c) 2011, 2012, 2013 Ingo Schwarze <schwarze@openbsd.org>
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 <assert.h>
22 #include <stdio.h>
23 #include <string.h>
24 
25 #include "mandoc.h"
26 #include "out.h"
27 #include "man.h"
28 #include "mdoc.h"
29 #include "main.h"
30 
31 #define	DECL_ARGS const struct mdoc_meta *meta, \
32 		  const struct mdoc_node *n
33 
34 struct	manact {
35 	int		(*cond)(DECL_ARGS); /* DON'T run actions */
36 	int		(*pre)(DECL_ARGS); /* pre-node action */
37 	void		(*post)(DECL_ARGS); /* post-node action */
38 	const char	 *prefix; /* pre-node string constant */
39 	const char	 *suffix; /* post-node string constant */
40 };
41 
42 static	int	  cond_body(DECL_ARGS);
43 static	int	  cond_head(DECL_ARGS);
44 static  void	  font_push(char);
45 static	void	  font_pop(void);
46 static	void	  mid_it(void);
47 static	void	  post__t(DECL_ARGS);
48 static	void	  post_bd(DECL_ARGS);
49 static	void	  post_bf(DECL_ARGS);
50 static	void	  post_bk(DECL_ARGS);
51 static	void	  post_bl(DECL_ARGS);
52 static	void	  post_dl(DECL_ARGS);
53 static	void	  post_enc(DECL_ARGS);
54 static	void	  post_eo(DECL_ARGS);
55 static	void	  post_fa(DECL_ARGS);
56 static	void	  post_fd(DECL_ARGS);
57 static	void	  post_fl(DECL_ARGS);
58 static	void	  post_fn(DECL_ARGS);
59 static	void	  post_fo(DECL_ARGS);
60 static	void	  post_font(DECL_ARGS);
61 static	void	  post_in(DECL_ARGS);
62 static	void	  post_it(DECL_ARGS);
63 static	void	  post_lb(DECL_ARGS);
64 static	void	  post_nm(DECL_ARGS);
65 static	void	  post_percent(DECL_ARGS);
66 static	void	  post_pf(DECL_ARGS);
67 static	void	  post_sect(DECL_ARGS);
68 static	void	  post_sp(DECL_ARGS);
69 static	void	  post_vt(DECL_ARGS);
70 static	int	  pre__t(DECL_ARGS);
71 static	int	  pre_an(DECL_ARGS);
72 static	int	  pre_ap(DECL_ARGS);
73 static	int	  pre_bd(DECL_ARGS);
74 static	int	  pre_bf(DECL_ARGS);
75 static	int	  pre_bk(DECL_ARGS);
76 static	int	  pre_bl(DECL_ARGS);
77 static	int	  pre_br(DECL_ARGS);
78 static	int	  pre_bx(DECL_ARGS);
79 static	int	  pre_dl(DECL_ARGS);
80 static	int	  pre_enc(DECL_ARGS);
81 static	int	  pre_em(DECL_ARGS);
82 static	int	  pre_fa(DECL_ARGS);
83 static	int	  pre_fd(DECL_ARGS);
84 static	int	  pre_fl(DECL_ARGS);
85 static	int	  pre_fn(DECL_ARGS);
86 static	int	  pre_fo(DECL_ARGS);
87 static	int	  pre_ft(DECL_ARGS);
88 static	int	  pre_in(DECL_ARGS);
89 static	int	  pre_it(DECL_ARGS);
90 static	int	  pre_lk(DECL_ARGS);
91 static	int	  pre_li(DECL_ARGS);
92 static	int	  pre_nm(DECL_ARGS);
93 static	int	  pre_no(DECL_ARGS);
94 static	int	  pre_ns(DECL_ARGS);
95 static	int	  pre_pp(DECL_ARGS);
96 static	int	  pre_rs(DECL_ARGS);
97 static	int	  pre_sm(DECL_ARGS);
98 static	int	  pre_sp(DECL_ARGS);
99 static	int	  pre_sect(DECL_ARGS);
100 static	int	  pre_sy(DECL_ARGS);
101 static	void	  pre_syn(const struct mdoc_node *);
102 static	int	  pre_vt(DECL_ARGS);
103 static	int	  pre_ux(DECL_ARGS);
104 static	int	  pre_xr(DECL_ARGS);
105 static	void	  print_word(const char *);
106 static	void	  print_line(const char *, int);
107 static	void	  print_block(const char *, int);
108 static	void	  print_offs(const char *);
109 static	void	  print_width(const char *,
110 				const struct mdoc_node *, size_t);
111 static	void	  print_count(int *);
112 static	void	  print_node(DECL_ARGS);
113 
114 static	const struct manact manacts[MDOC_MAX + 1] = {
115 	{ NULL, pre_ap, NULL, NULL, NULL }, /* Ap */
116 	{ NULL, NULL, NULL, NULL, NULL }, /* Dd */
117 	{ NULL, NULL, NULL, NULL, NULL }, /* Dt */
118 	{ NULL, NULL, NULL, NULL, NULL }, /* Os */
119 	{ NULL, pre_sect, post_sect, ".SH", NULL }, /* Sh */
120 	{ NULL, pre_sect, post_sect, ".SS", NULL }, /* Ss */
121 	{ NULL, pre_pp, NULL, NULL, NULL }, /* Pp */
122 	{ cond_body, pre_dl, post_dl, NULL, NULL }, /* D1 */
123 	{ cond_body, pre_dl, post_dl, NULL, NULL }, /* Dl */
124 	{ cond_body, pre_bd, post_bd, NULL, NULL }, /* Bd */
125 	{ NULL, NULL, NULL, NULL, NULL }, /* Ed */
126 	{ cond_body, pre_bl, post_bl, NULL, NULL }, /* Bl */
127 	{ NULL, NULL, NULL, NULL, NULL }, /* El */
128 	{ NULL, pre_it, post_it, NULL, NULL }, /* It */
129 	{ NULL, pre_em, post_font, NULL, NULL }, /* Ad */
130 	{ NULL, pre_an, NULL, NULL, NULL }, /* An */
131 	{ NULL, pre_em, post_font, NULL, NULL }, /* Ar */
132 	{ NULL, pre_sy, post_font, NULL, NULL }, /* Cd */
133 	{ NULL, pre_sy, post_font, NULL, NULL }, /* Cm */
134 	{ NULL, pre_li, post_font, NULL, NULL }, /* Dv */
135 	{ NULL, pre_li, post_font, NULL, NULL }, /* Er */
136 	{ NULL, pre_li, post_font, NULL, NULL }, /* Ev */
137 	{ NULL, pre_enc, post_enc, "The \\fB",
138 	    "\\fP\nutility exits 0 on success, and >0 if an error occurs."
139 	    }, /* Ex */
140 	{ NULL, pre_fa, post_fa, NULL, NULL }, /* Fa */
141 	{ NULL, pre_fd, post_fd, NULL, NULL }, /* Fd */
142 	{ NULL, pre_fl, post_fl, NULL, NULL }, /* Fl */
143 	{ NULL, pre_fn, post_fn, NULL, NULL }, /* Fn */
144 	{ NULL, pre_ft, post_font, NULL, NULL }, /* Ft */
145 	{ NULL, pre_sy, post_font, NULL, NULL }, /* Ic */
146 	{ NULL, pre_in, post_in, NULL, NULL }, /* In */
147 	{ NULL, pre_li, post_font, NULL, NULL }, /* Li */
148 	{ cond_head, pre_enc, NULL, "\\- ", NULL }, /* Nd */
149 	{ NULL, pre_nm, post_nm, NULL, NULL }, /* Nm */
150 	{ cond_body, pre_enc, post_enc, "[", "]" }, /* Op */
151 	{ NULL, NULL, NULL, NULL, NULL }, /* Ot */
152 	{ NULL, pre_em, post_font, NULL, NULL }, /* Pa */
153 	{ NULL, pre_enc, post_enc, "The \\fB",
154 		"\\fP\nfunction returns the value 0 if successful;\n"
155 		"otherwise the value -1 is returned and the global\n"
156 		"variable \\fIerrno\\fP is set to indicate the error."
157 		}, /* Rv */
158 	{ NULL, NULL, NULL, NULL, NULL }, /* St */
159 	{ NULL, pre_em, post_font, NULL, NULL }, /* Va */
160 	{ NULL, pre_vt, post_vt, NULL, NULL }, /* Vt */
161 	{ NULL, pre_xr, NULL, NULL, NULL }, /* Xr */
162 	{ NULL, NULL, post_percent, NULL, NULL }, /* %A */
163 	{ NULL, pre_em, post_percent, NULL, NULL }, /* %B */
164 	{ NULL, NULL, post_percent, NULL, NULL }, /* %D */
165 	{ NULL, pre_em, post_percent, NULL, NULL }, /* %I */
166 	{ NULL, pre_em, post_percent, NULL, NULL }, /* %J */
167 	{ NULL, NULL, post_percent, NULL, NULL }, /* %N */
168 	{ NULL, NULL, post_percent, NULL, NULL }, /* %O */
169 	{ NULL, NULL, post_percent, NULL, NULL }, /* %P */
170 	{ NULL, NULL, post_percent, NULL, NULL }, /* %R */
171 	{ NULL, pre__t, post__t, NULL, NULL }, /* %T */
172 	{ NULL, NULL, post_percent, NULL, NULL }, /* %V */
173 	{ NULL, NULL, NULL, NULL, NULL }, /* Ac */
174 	{ cond_body, pre_enc, post_enc, "<", ">" }, /* Ao */
175 	{ cond_body, pre_enc, post_enc, "<", ">" }, /* Aq */
176 	{ NULL, NULL, NULL, NULL, NULL }, /* At */
177 	{ NULL, NULL, NULL, NULL, NULL }, /* Bc */
178 	{ NULL, pre_bf, post_bf, NULL, NULL }, /* Bf */
179 	{ cond_body, pre_enc, post_enc, "[", "]" }, /* Bo */
180 	{ cond_body, pre_enc, post_enc, "[", "]" }, /* Bq */
181 	{ NULL, pre_ux, NULL, "BSD/OS", NULL }, /* Bsx */
182 	{ NULL, pre_bx, NULL, NULL, NULL }, /* Bx */
183 	{ NULL, NULL, NULL, NULL, NULL }, /* Db */
184 	{ NULL, NULL, NULL, NULL, NULL }, /* Dc */
185 	{ cond_body, pre_enc, post_enc, "\\(lq", "\\(rq" }, /* Do */
186 	{ cond_body, pre_enc, post_enc, "\\(lq", "\\(rq" }, /* Dq */
187 	{ NULL, NULL, NULL, NULL, NULL }, /* Ec */
188 	{ NULL, NULL, NULL, NULL, NULL }, /* Ef */
189 	{ NULL, pre_em, post_font, NULL, NULL }, /* Em */
190 	{ NULL, NULL, post_eo, NULL, NULL }, /* Eo */
191 	{ NULL, pre_ux, NULL, "FreeBSD", NULL }, /* Fx */
192 	{ NULL, pre_sy, post_font, NULL, NULL }, /* Ms */
193 	{ NULL, pre_no, NULL, NULL, NULL }, /* No */
194 	{ NULL, pre_ns, NULL, NULL, NULL }, /* Ns */
195 	{ NULL, pre_ux, NULL, "NetBSD", NULL }, /* Nx */
196 	{ NULL, pre_ux, NULL, "OpenBSD", NULL }, /* Ox */
197 	{ NULL, NULL, NULL, NULL, NULL }, /* Pc */
198 	{ NULL, NULL, post_pf, NULL, NULL }, /* Pf */
199 	{ cond_body, pre_enc, post_enc, "(", ")" }, /* Po */
200 	{ cond_body, pre_enc, post_enc, "(", ")" }, /* Pq */
201 	{ NULL, NULL, NULL, NULL, NULL }, /* Qc */
202 	{ cond_body, pre_enc, post_enc, "\\(oq", "\\(cq" }, /* Ql */
203 	{ cond_body, pre_enc, post_enc, "\"", "\"" }, /* Qo */
204 	{ cond_body, pre_enc, post_enc, "\"", "\"" }, /* Qq */
205 	{ NULL, NULL, NULL, NULL, NULL }, /* Re */
206 	{ cond_body, pre_rs, NULL, NULL, NULL }, /* Rs */
207 	{ NULL, NULL, NULL, NULL, NULL }, /* Sc */
208 	{ cond_body, pre_enc, post_enc, "\\(oq", "\\(cq" }, /* So */
209 	{ cond_body, pre_enc, post_enc, "\\(oq", "\\(cq" }, /* Sq */
210 	{ NULL, pre_sm, NULL, NULL, NULL }, /* Sm */
211 	{ NULL, pre_em, post_font, NULL, NULL }, /* Sx */
212 	{ NULL, pre_sy, post_font, NULL, NULL }, /* Sy */
213 	{ NULL, pre_li, post_font, NULL, NULL }, /* Tn */
214 	{ NULL, pre_ux, NULL, "UNIX", NULL }, /* Ux */
215 	{ NULL, NULL, NULL, NULL, NULL }, /* Xc */
216 	{ NULL, NULL, NULL, NULL, NULL }, /* Xo */
217 	{ NULL, pre_fo, post_fo, NULL, NULL }, /* Fo */
218 	{ NULL, NULL, NULL, NULL, NULL }, /* Fc */
219 	{ cond_body, pre_enc, post_enc, "[", "]" }, /* Oo */
220 	{ NULL, NULL, NULL, NULL, NULL }, /* Oc */
221 	{ NULL, pre_bk, post_bk, NULL, NULL }, /* Bk */
222 	{ NULL, NULL, NULL, NULL, NULL }, /* Ek */
223 	{ NULL, pre_ux, NULL, "is currently in beta test.", NULL }, /* Bt */
224 	{ NULL, NULL, NULL, NULL, NULL }, /* Hf */
225 	{ NULL, NULL, NULL, NULL, NULL }, /* Fr */
226 	{ NULL, pre_ux, NULL, "currently under development.", NULL }, /* Ud */
227 	{ NULL, NULL, post_lb, NULL, NULL }, /* Lb */
228 	{ NULL, pre_pp, NULL, NULL, NULL }, /* Lp */
229 	{ NULL, pre_lk, NULL, NULL, NULL }, /* Lk */
230 	{ NULL, pre_em, post_font, NULL, NULL }, /* Mt */
231 	{ cond_body, pre_enc, post_enc, "{", "}" }, /* Brq */
232 	{ cond_body, pre_enc, post_enc, "{", "}" }, /* Bro */
233 	{ NULL, NULL, NULL, NULL, NULL }, /* Brc */
234 	{ NULL, NULL, post_percent, NULL, NULL }, /* %C */
235 	{ NULL, NULL, NULL, NULL, NULL }, /* Es */
236 	{ NULL, NULL, NULL, NULL, NULL }, /* En */
237 	{ NULL, pre_ux, NULL, "DragonFly", NULL }, /* Dx */
238 	{ NULL, NULL, post_percent, NULL, NULL }, /* %Q */
239 	{ NULL, pre_br, NULL, NULL, NULL }, /* br */
240 	{ NULL, pre_sp, post_sp, NULL, NULL }, /* sp */
241 	{ NULL, NULL, post_percent, NULL, NULL }, /* %U */
242 	{ NULL, NULL, NULL, NULL, NULL }, /* Ta */
243 	{ NULL, NULL, NULL, NULL, NULL }, /* ROOT */
244 };
245 
246 static	int		outflags;
247 #define	MMAN_spc	(1 << 0)  /* blank character before next word */
248 #define	MMAN_spc_force	(1 << 1)  /* even before trailing punctuation */
249 #define	MMAN_nl		(1 << 2)  /* break man(7) code line */
250 #define	MMAN_br		(1 << 3)  /* break output line */
251 #define	MMAN_sp		(1 << 4)  /* insert a blank output line */
252 #define	MMAN_PP		(1 << 5)  /* reset indentation etc. */
253 #define	MMAN_Sm		(1 << 6)  /* horizontal spacing mode */
254 #define	MMAN_Bk		(1 << 7)  /* word keep mode */
255 #define	MMAN_Bk_susp	(1 << 8)  /* suspend this (after a macro) */
256 #define	MMAN_An_split	(1 << 9)  /* author mode is "split" */
257 #define	MMAN_An_nosplit	(1 << 10) /* author mode is "nosplit" */
258 #define	MMAN_PD		(1 << 11) /* inter-paragraph spacing disabled */
259 #define	MMAN_nbrword	(1 << 12) /* do not break the next word */
260 
261 #define	BL_STACK_MAX	32
262 
263 static	size_t		Bl_stack[BL_STACK_MAX];  /* offsets [chars] */
264 static	int		Bl_stack_post[BL_STACK_MAX];  /* add final .RE */
265 static	int		Bl_stack_len;  /* number of nested Bl blocks */
266 static	int		TPremain;  /* characters before tag is full */
267 
268 static	struct {
269 	char	*head;
270 	char	*tail;
271 	size_t	 size;
272 }	fontqueue;
273 
274 static void
font_push(char newfont)275 font_push(char newfont)
276 {
277 
278 	if (fontqueue.head + fontqueue.size <= ++fontqueue.tail) {
279 		fontqueue.size += 8;
280 		fontqueue.head = mandoc_realloc(fontqueue.head,
281 				fontqueue.size);
282 	}
283 	*fontqueue.tail = newfont;
284 	print_word("");
285 	printf("\\f");
286 	putchar(newfont);
287 	outflags &= ~MMAN_spc;
288 }
289 
290 static void
font_pop(void)291 font_pop(void)
292 {
293 
294 	if (fontqueue.tail > fontqueue.head)
295 		fontqueue.tail--;
296 	outflags &= ~MMAN_spc;
297 	print_word("");
298 	printf("\\f");
299 	putchar(*fontqueue.tail);
300 }
301 
302 static void
print_word(const char * s)303 print_word(const char *s)
304 {
305 
306 	if ((MMAN_PP | MMAN_sp | MMAN_br | MMAN_nl) & outflags) {
307 		/*
308 		 * If we need a newline, print it now and start afresh.
309 		 */
310 		if (MMAN_PP & outflags) {
311 			if (MMAN_sp & outflags) {
312 				if (MMAN_PD & outflags) {
313 					printf("\n.PD");
314 					outflags &= ~MMAN_PD;
315 				}
316 			} else if ( ! (MMAN_PD & outflags)) {
317 				printf("\n.PD 0");
318 				outflags |= MMAN_PD;
319 			}
320 			printf("\n.PP\n");
321 		} else if (MMAN_sp & outflags)
322 			printf("\n.sp\n");
323 		else if (MMAN_br & outflags)
324 			printf("\n.br\n");
325 		else if (MMAN_nl & outflags)
326 			putchar('\n');
327 		outflags &= ~(MMAN_PP|MMAN_sp|MMAN_br|MMAN_nl|MMAN_spc);
328 		if (1 == TPremain)
329 			printf(".br\n");
330 		TPremain = 0;
331 	} else if (MMAN_spc & outflags) {
332 		/*
333 		 * If we need a space, only print it if
334 		 * (1) it is forced by `No' or
335 		 * (2) what follows is not terminating punctuation or
336 		 * (3) what follows is longer than one character.
337 		 */
338 		if (MMAN_spc_force & outflags || '\0' == s[0] ||
339 		    NULL == strchr(".,:;)]?!", s[0]) || '\0' != s[1]) {
340 			if (MMAN_Bk & outflags &&
341 			    ! (MMAN_Bk_susp & outflags))
342 				putchar('\\');
343 			putchar(' ');
344 			if (TPremain)
345 				TPremain--;
346 		}
347 	}
348 
349 	/*
350 	 * Reassign needing space if we're not following opening
351 	 * punctuation.
352 	 */
353 	if (MMAN_Sm & outflags && ('\0' == s[0] ||
354 	    (('(' != s[0] && '[' != s[0]) || '\0' != s[1])))
355 		outflags |= MMAN_spc;
356 	else
357 		outflags &= ~MMAN_spc;
358 	outflags &= ~(MMAN_spc_force | MMAN_Bk_susp);
359 
360 	for ( ; *s; s++) {
361 		switch (*s) {
362 		case (ASCII_NBRSP):
363 			printf("\\ ");
364 			break;
365 		case (ASCII_HYPH):
366 			putchar('-');
367 			break;
368 		case (' '):
369 			if (MMAN_nbrword & outflags) {
370 				printf("\\ ");
371 				break;
372 			}
373 			/* FALLTHROUGH */
374 		default:
375 			putchar((unsigned char)*s);
376 			break;
377 		}
378 		if (TPremain)
379 			TPremain--;
380 	}
381 	outflags &= ~MMAN_nbrword;
382 }
383 
384 static void
print_line(const char * s,int newflags)385 print_line(const char *s, int newflags)
386 {
387 
388 	outflags &= ~MMAN_br;
389 	outflags |= MMAN_nl;
390 	print_word(s);
391 	outflags |= newflags;
392 }
393 
394 static void
print_block(const char * s,int newflags)395 print_block(const char *s, int newflags)
396 {
397 
398 	outflags &= ~MMAN_PP;
399 	if (MMAN_sp & outflags) {
400 		outflags &= ~(MMAN_sp | MMAN_br);
401 		if (MMAN_PD & outflags) {
402 			print_line(".PD", 0);
403 			outflags &= ~MMAN_PD;
404 		}
405 	} else if (! (MMAN_PD & outflags))
406 		print_line(".PD 0", MMAN_PD);
407 	outflags |= MMAN_nl;
408 	print_word(s);
409 	outflags |= MMAN_Bk_susp | newflags;
410 }
411 
412 static void
print_offs(const char * v)413 print_offs(const char *v)
414 {
415 	char		  buf[24];
416 	struct roffsu	  su;
417 	size_t		  sz;
418 
419 	print_line(".RS", MMAN_Bk_susp);
420 
421 	/* Convert v into a number (of characters). */
422 	if (NULL == v || '\0' == *v || 0 == strcmp(v, "left"))
423 		sz = 0;
424 	else if (0 == strcmp(v, "indent"))
425 		sz = 6;
426 	else if (0 == strcmp(v, "indent-two"))
427 		sz = 12;
428 	else if (a2roffsu(v, &su, SCALE_MAX)) {
429 		if (SCALE_EN == su.unit)
430 			sz = su.scale;
431 		else {
432 			/*
433 			 * XXX
434 			 * If we are inside an enclosing list,
435 			 * there is no easy way to add the two
436 			 * indentations because they are provided
437 			 * in terms of different units.
438 			 */
439 			print_word(v);
440 			outflags |= MMAN_nl;
441 			return;
442 		}
443 	} else
444 		sz = strlen(v);
445 
446 	/*
447 	 * We are inside an enclosing list.
448 	 * Add the two indentations.
449 	 */
450 	if (Bl_stack_len)
451 		sz += Bl_stack[Bl_stack_len - 1];
452 
453 	snprintf(buf, sizeof(buf), "%zun", sz);
454 	print_word(buf);
455 	outflags |= MMAN_nl;
456 }
457 
458 /*
459  * Set up the indentation for a list item; used from pre_it().
460  */
461 void
print_width(const char * v,const struct mdoc_node * child,size_t defsz)462 print_width(const char *v, const struct mdoc_node *child, size_t defsz)
463 {
464 	char		  buf[24];
465 	struct roffsu	  su;
466 	size_t		  sz, chsz;
467 	int		  numeric, remain;
468 
469 	numeric = 1;
470 	remain = 0;
471 
472 	/* Convert v into a number (of characters). */
473 	if (NULL == v)
474 		sz = defsz;
475 	else if (a2roffsu(v, &su, SCALE_MAX)) {
476 		if (SCALE_EN == su.unit)
477 			sz = su.scale;
478 		else {
479 			sz = 0;
480 			numeric = 0;
481 		}
482 	} else
483 		sz = strlen(v);
484 
485 	/* XXX Rough estimation, might have multiple parts. */
486 	chsz = (NULL != child && MDOC_TEXT == child->type) ?
487 			strlen(child->string) : 0;
488 
489 	/* Maybe we are inside an enclosing list? */
490 	mid_it();
491 
492 	/*
493 	 * Save our own indentation,
494 	 * such that child lists can use it.
495 	 */
496 	Bl_stack[Bl_stack_len++] = sz + 2;
497 
498 	/* Set up the current list. */
499 	if (defsz && chsz > sz)
500 		print_block(".HP", 0);
501 	else {
502 		print_block(".TP", 0);
503 		remain = sz + 2;
504 	}
505 	if (numeric) {
506 		snprintf(buf, sizeof(buf), "%zun", sz + 2);
507 		print_word(buf);
508 	} else
509 		print_word(v);
510 	TPremain = remain;
511 }
512 
513 void
print_count(int * count)514 print_count(int *count)
515 {
516 	char		  buf[12];
517 
518 	snprintf(buf, sizeof(buf), "%d.", ++*count);
519 	print_word(buf);
520 }
521 
522 void
man_man(void * arg,const struct man * man)523 man_man(void *arg, const struct man *man)
524 {
525 
526 	/*
527 	 * Dump the keep buffer.
528 	 * We're guaranteed by now that this exists (is non-NULL).
529 	 * Flush stdout afterward, just in case.
530 	 */
531 	fputs(mparse_getkeep(man_mparse(man)), stdout);
532 	fflush(stdout);
533 }
534 
535 void
man_mdoc(void * arg,const struct mdoc * mdoc)536 man_mdoc(void *arg, const struct mdoc *mdoc)
537 {
538 	const struct mdoc_meta *meta;
539 	const struct mdoc_node *n;
540 
541 	meta = mdoc_meta(mdoc);
542 	n = mdoc_node(mdoc);
543 
544 	printf(".TH \"%s\" \"%s\" \"%s\" \"%s\" \"%s\"\n",
545 			meta->title, meta->msec, meta->date,
546 			meta->os, meta->vol);
547 
548 	/* Disable hyphenation and if nroff, disable justification. */
549 	printf(".nh\n.if n .ad l");
550 
551 	outflags = MMAN_nl | MMAN_Sm;
552 	if (0 == fontqueue.size) {
553 		fontqueue.size = 8;
554 		fontqueue.head = fontqueue.tail = mandoc_malloc(8);
555 		*fontqueue.tail = 'R';
556 	}
557 	print_node(meta, n);
558 	putchar('\n');
559 }
560 
561 static void
print_node(DECL_ARGS)562 print_node(DECL_ARGS)
563 {
564 	const struct mdoc_node	*sub;
565 	const struct manact	*act;
566 	int			 cond, do_sub;
567 
568 	/*
569 	 * Break the line if we were parsed subsequent the current node.
570 	 * This makes the page structure be more consistent.
571 	 */
572 	if (MMAN_spc & outflags && MDOC_LINE & n->flags)
573 		outflags |= MMAN_nl;
574 
575 	act = NULL;
576 	cond = 0;
577 	do_sub = 1;
578 
579 	if (MDOC_TEXT == n->type) {
580 		/*
581 		 * Make sure that we don't happen to start with a
582 		 * control character at the start of a line.
583 		 */
584 		if (MMAN_nl & outflags && ('.' == *n->string ||
585 					'\'' == *n->string)) {
586 			print_word("");
587 			printf("\\&");
588 			outflags &= ~MMAN_spc;
589 		}
590 		print_word(n->string);
591 	} else {
592 		/*
593 		 * Conditionally run the pre-node action handler for a
594 		 * node.
595 		 */
596 		act = manacts + n->tok;
597 		cond = NULL == act->cond || (*act->cond)(meta, n);
598 		if (cond && act->pre)
599 			do_sub = (*act->pre)(meta, n);
600 	}
601 
602 	/*
603 	 * Conditionally run all child nodes.
604 	 * Note that this iterates over children instead of using
605 	 * recursion.  This prevents unnecessary depth in the stack.
606 	 */
607 	if (do_sub)
608 		for (sub = n->child; sub; sub = sub->next)
609 			print_node(meta, sub);
610 
611 	/*
612 	 * Lastly, conditionally run the post-node handler.
613 	 */
614 	if (cond && act->post)
615 		(*act->post)(meta, n);
616 }
617 
618 static int
cond_head(DECL_ARGS)619 cond_head(DECL_ARGS)
620 {
621 
622 	return(MDOC_HEAD == n->type);
623 }
624 
625 static int
cond_body(DECL_ARGS)626 cond_body(DECL_ARGS)
627 {
628 
629 	return(MDOC_BODY == n->type);
630 }
631 
632 static int
pre_enc(DECL_ARGS)633 pre_enc(DECL_ARGS)
634 {
635 	const char	*prefix;
636 
637 	prefix = manacts[n->tok].prefix;
638 	if (NULL == prefix)
639 		return(1);
640 	print_word(prefix);
641 	outflags &= ~MMAN_spc;
642 	return(1);
643 }
644 
645 static void
post_enc(DECL_ARGS)646 post_enc(DECL_ARGS)
647 {
648 	const char *suffix;
649 
650 	suffix = manacts[n->tok].suffix;
651 	if (NULL == suffix)
652 		return;
653 	outflags &= ~MMAN_spc;
654 	print_word(suffix);
655 }
656 
657 static void
post_font(DECL_ARGS)658 post_font(DECL_ARGS)
659 {
660 
661 	font_pop();
662 }
663 
664 static void
post_percent(DECL_ARGS)665 post_percent(DECL_ARGS)
666 {
667 
668 	if (pre_em == manacts[n->tok].pre)
669 		font_pop();
670 	if (n->next) {
671 		print_word(",");
672 		if (n->prev &&	n->prev->tok == n->tok &&
673 				n->next->tok == n->tok)
674 			print_word("and");
675 	} else {
676 		print_word(".");
677 		outflags |= MMAN_nl;
678 	}
679 }
680 
681 static int
pre__t(DECL_ARGS)682 pre__t(DECL_ARGS)
683 {
684 
685         if (n->parent && MDOC_Rs == n->parent->tok &&
686                         n->parent->norm->Rs.quote_T) {
687 		print_word("");
688 		putchar('\"');
689 		outflags &= ~MMAN_spc;
690 	} else
691 		font_push('I');
692 	return(1);
693 }
694 
695 static void
post__t(DECL_ARGS)696 post__t(DECL_ARGS)
697 {
698 
699         if (n->parent && MDOC_Rs == n->parent->tok &&
700                         n->parent->norm->Rs.quote_T) {
701 		outflags &= ~MMAN_spc;
702 		print_word("");
703 		putchar('\"');
704 	} else
705 		font_pop();
706 	post_percent(meta, n);
707 }
708 
709 /*
710  * Print before a section header.
711  */
712 static int
pre_sect(DECL_ARGS)713 pre_sect(DECL_ARGS)
714 {
715 
716 	if (MDOC_HEAD == n->type) {
717 		outflags |= MMAN_sp;
718 		print_block(manacts[n->tok].prefix, 0);
719 		print_word("");
720 		putchar('\"');
721 		outflags &= ~MMAN_spc;
722 	}
723 	return(1);
724 }
725 
726 /*
727  * Print subsequent a section header.
728  */
729 static void
post_sect(DECL_ARGS)730 post_sect(DECL_ARGS)
731 {
732 
733 	if (MDOC_HEAD != n->type)
734 		return;
735 	outflags &= ~MMAN_spc;
736 	print_word("");
737 	putchar('\"');
738 	outflags |= MMAN_nl;
739 	if (MDOC_Sh == n->tok && SEC_AUTHORS == n->sec)
740 		outflags &= ~(MMAN_An_split | MMAN_An_nosplit);
741 }
742 
743 /* See mdoc_term.c, synopsis_pre() for comments. */
744 static void
pre_syn(const struct mdoc_node * n)745 pre_syn(const struct mdoc_node *n)
746 {
747 
748 	if (NULL == n->prev || ! (MDOC_SYNPRETTY & n->flags))
749 		return;
750 
751 	if (n->prev->tok == n->tok &&
752 			MDOC_Ft != n->tok &&
753 			MDOC_Fo != n->tok &&
754 			MDOC_Fn != n->tok) {
755 		outflags |= MMAN_br;
756 		return;
757 	}
758 
759 	switch (n->prev->tok) {
760 	case (MDOC_Fd):
761 		/* FALLTHROUGH */
762 	case (MDOC_Fn):
763 		/* FALLTHROUGH */
764 	case (MDOC_Fo):
765 		/* FALLTHROUGH */
766 	case (MDOC_In):
767 		/* FALLTHROUGH */
768 	case (MDOC_Vt):
769 		outflags |= MMAN_sp;
770 		break;
771 	case (MDOC_Ft):
772 		if (MDOC_Fn != n->tok && MDOC_Fo != n->tok) {
773 			outflags |= MMAN_sp;
774 			break;
775 		}
776 		/* FALLTHROUGH */
777 	default:
778 		outflags |= MMAN_br;
779 		break;
780 	}
781 }
782 
783 static int
pre_an(DECL_ARGS)784 pre_an(DECL_ARGS)
785 {
786 
787 	switch (n->norm->An.auth) {
788 	case (AUTH_split):
789 		outflags &= ~MMAN_An_nosplit;
790 		outflags |= MMAN_An_split;
791 		return(0);
792 	case (AUTH_nosplit):
793 		outflags &= ~MMAN_An_split;
794 		outflags |= MMAN_An_nosplit;
795 		return(0);
796 	default:
797 		if (MMAN_An_split & outflags)
798 			outflags |= MMAN_br;
799 		else if (SEC_AUTHORS == n->sec &&
800 		    ! (MMAN_An_nosplit & outflags))
801 			outflags |= MMAN_An_split;
802 		return(1);
803 	}
804 }
805 
806 static int
pre_ap(DECL_ARGS)807 pre_ap(DECL_ARGS)
808 {
809 
810 	outflags &= ~MMAN_spc;
811 	print_word("'");
812 	outflags &= ~MMAN_spc;
813 	return(0);
814 }
815 
816 static int
pre_bd(DECL_ARGS)817 pre_bd(DECL_ARGS)
818 {
819 
820 	outflags &= ~(MMAN_PP | MMAN_sp | MMAN_br);
821 
822 	if (DISP_unfilled == n->norm->Bd.type ||
823 	    DISP_literal  == n->norm->Bd.type)
824 		print_line(".nf", 0);
825 	if (0 == n->norm->Bd.comp && NULL != n->parent->prev)
826 		outflags |= MMAN_sp;
827 	print_offs(n->norm->Bd.offs);
828 	return(1);
829 }
830 
831 static void
post_bd(DECL_ARGS)832 post_bd(DECL_ARGS)
833 {
834 
835 	/* Close out this display. */
836 	print_line(".RE", MMAN_nl);
837 	if (DISP_unfilled == n->norm->Bd.type ||
838 	    DISP_literal  == n->norm->Bd.type)
839 		print_line(".fi", MMAN_nl);
840 
841 	/* Maybe we are inside an enclosing list? */
842 	if (NULL != n->parent->next)
843 		mid_it();
844 }
845 
846 static int
pre_bf(DECL_ARGS)847 pre_bf(DECL_ARGS)
848 {
849 
850 	switch (n->type) {
851 	case (MDOC_BLOCK):
852 		return(1);
853 	case (MDOC_BODY):
854 		break;
855 	default:
856 		return(0);
857 	}
858 	switch (n->norm->Bf.font) {
859 	case (FONT_Em):
860 		font_push('I');
861 		break;
862 	case (FONT_Sy):
863 		font_push('B');
864 		break;
865 	default:
866 		font_push('R');
867 		break;
868 	}
869 	return(1);
870 }
871 
872 static void
post_bf(DECL_ARGS)873 post_bf(DECL_ARGS)
874 {
875 
876 	if (MDOC_BODY == n->type)
877 		font_pop();
878 }
879 
880 static int
pre_bk(DECL_ARGS)881 pre_bk(DECL_ARGS)
882 {
883 
884 	switch (n->type) {
885 	case (MDOC_BLOCK):
886 		return(1);
887 	case (MDOC_BODY):
888 		outflags |= MMAN_Bk;
889 		return(1);
890 	default:
891 		return(0);
892 	}
893 }
894 
895 static void
post_bk(DECL_ARGS)896 post_bk(DECL_ARGS)
897 {
898 
899 	if (MDOC_BODY == n->type)
900 		outflags &= ~MMAN_Bk;
901 }
902 
903 static int
pre_bl(DECL_ARGS)904 pre_bl(DECL_ARGS)
905 {
906 	size_t		 icol;
907 
908 	/*
909 	 * print_offs() will increase the -offset to account for
910 	 * a possible enclosing .It, but any enclosed .It blocks
911 	 * just nest and do not add up their indentation.
912 	 */
913 	if (n->norm->Bl.offs) {
914 		print_offs(n->norm->Bl.offs);
915 		Bl_stack[Bl_stack_len++] = 0;
916 	}
917 
918 	switch (n->norm->Bl.type) {
919 	case (LIST_enum):
920 		n->norm->Bl.count = 0;
921 		return(1);
922 	case (LIST_column):
923 		break;
924 	default:
925 		return(1);
926 	}
927 
928 	print_line(".TS", MMAN_nl);
929 	for (icol = 0; icol < n->norm->Bl.ncols; icol++)
930 		print_word("l");
931 	print_word(".");
932 	outflags |= MMAN_nl;
933 	return(1);
934 }
935 
936 static void
post_bl(DECL_ARGS)937 post_bl(DECL_ARGS)
938 {
939 
940 	switch (n->norm->Bl.type) {
941 	case (LIST_column):
942 		print_line(".TE", 0);
943 		break;
944 	case (LIST_enum):
945 		n->norm->Bl.count = 0;
946 		break;
947 	default:
948 		break;
949 	}
950 
951 	if (n->norm->Bl.offs) {
952 		print_line(".RE", MMAN_nl);
953 		assert(Bl_stack_len);
954 		Bl_stack_len--;
955 		assert(0 == Bl_stack[Bl_stack_len]);
956 	} else {
957 		outflags |= MMAN_PP | MMAN_nl;
958 		outflags &= ~(MMAN_sp | MMAN_br);
959 	}
960 
961 	/* Maybe we are inside an enclosing list? */
962 	if (NULL != n->parent->next)
963 		mid_it();
964 
965 }
966 
967 static int
pre_br(DECL_ARGS)968 pre_br(DECL_ARGS)
969 {
970 
971 	outflags |= MMAN_br;
972 	return(0);
973 }
974 
975 static int
pre_bx(DECL_ARGS)976 pre_bx(DECL_ARGS)
977 {
978 
979 	n = n->child;
980 	if (n) {
981 		print_word(n->string);
982 		outflags &= ~MMAN_spc;
983 		n = n->next;
984 	}
985 	print_word("BSD");
986 	if (NULL == n)
987 		return(0);
988 	outflags &= ~MMAN_spc;
989 	print_word("-");
990 	outflags &= ~MMAN_spc;
991 	print_word(n->string);
992 	return(0);
993 }
994 
995 static int
pre_dl(DECL_ARGS)996 pre_dl(DECL_ARGS)
997 {
998 
999 	print_offs("6n");
1000 	return(1);
1001 }
1002 
1003 static void
post_dl(DECL_ARGS)1004 post_dl(DECL_ARGS)
1005 {
1006 
1007 	print_line(".RE", MMAN_nl);
1008 
1009 	/* Maybe we are inside an enclosing list? */
1010 	if (NULL != n->parent->next)
1011 		mid_it();
1012 }
1013 
1014 static int
pre_em(DECL_ARGS)1015 pre_em(DECL_ARGS)
1016 {
1017 
1018 	font_push('I');
1019 	return(1);
1020 }
1021 
1022 static void
post_eo(DECL_ARGS)1023 post_eo(DECL_ARGS)
1024 {
1025 
1026 	if (MDOC_HEAD == n->type || MDOC_BODY == n->type)
1027 		outflags &= ~MMAN_spc;
1028 }
1029 
1030 static int
pre_fa(DECL_ARGS)1031 pre_fa(DECL_ARGS)
1032 {
1033 	int	 am_Fa;
1034 
1035 	am_Fa = MDOC_Fa == n->tok;
1036 
1037 	if (am_Fa)
1038 		n = n->child;
1039 
1040 	while (NULL != n) {
1041 		font_push('I');
1042 		if (am_Fa || MDOC_SYNPRETTY & n->flags)
1043 			outflags |= MMAN_nbrword;
1044 		print_node(meta, n);
1045 		font_pop();
1046 		if (NULL != (n = n->next))
1047 			print_word(",");
1048 	}
1049 	return(0);
1050 }
1051 
1052 static void
post_fa(DECL_ARGS)1053 post_fa(DECL_ARGS)
1054 {
1055 
1056 	if (NULL != n->next && MDOC_Fa == n->next->tok)
1057 		print_word(",");
1058 }
1059 
1060 static int
pre_fd(DECL_ARGS)1061 pre_fd(DECL_ARGS)
1062 {
1063 
1064 	pre_syn(n);
1065 	font_push('B');
1066 	return(1);
1067 }
1068 
1069 static void
post_fd(DECL_ARGS)1070 post_fd(DECL_ARGS)
1071 {
1072 
1073 	font_pop();
1074 	outflags |= MMAN_br;
1075 }
1076 
1077 static int
pre_fl(DECL_ARGS)1078 pre_fl(DECL_ARGS)
1079 {
1080 
1081 	font_push('B');
1082 	print_word("\\-");
1083 	outflags &= ~MMAN_spc;
1084 	return(1);
1085 }
1086 
1087 static void
post_fl(DECL_ARGS)1088 post_fl(DECL_ARGS)
1089 {
1090 
1091 	font_pop();
1092 	if (0 == n->nchild && NULL != n->next &&
1093 			n->next->line == n->line)
1094 		outflags &= ~MMAN_spc;
1095 }
1096 
1097 static int
pre_fn(DECL_ARGS)1098 pre_fn(DECL_ARGS)
1099 {
1100 
1101 	pre_syn(n);
1102 
1103 	n = n->child;
1104 	if (NULL == n)
1105 		return(0);
1106 
1107 	if (MDOC_SYNPRETTY & n->flags)
1108 		print_block(".HP 4n", MMAN_nl);
1109 
1110 	font_push('B');
1111 	print_node(meta, n);
1112 	font_pop();
1113 	outflags &= ~MMAN_spc;
1114 	print_word("(");
1115 	outflags &= ~MMAN_spc;
1116 
1117 	n = n->next;
1118 	if (NULL != n)
1119 		pre_fa(meta, n);
1120 	return(0);
1121 }
1122 
1123 static void
post_fn(DECL_ARGS)1124 post_fn(DECL_ARGS)
1125 {
1126 
1127 	print_word(")");
1128 	if (MDOC_SYNPRETTY & n->flags) {
1129 		print_word(";");
1130 		outflags |= MMAN_PP;
1131 	}
1132 }
1133 
1134 static int
pre_fo(DECL_ARGS)1135 pre_fo(DECL_ARGS)
1136 {
1137 
1138 	switch (n->type) {
1139 	case (MDOC_BLOCK):
1140 		pre_syn(n);
1141 		break;
1142 	case (MDOC_HEAD):
1143 		if (MDOC_SYNPRETTY & n->flags)
1144 			print_block(".HP 4n", MMAN_nl);
1145 		font_push('B');
1146 		break;
1147 	case (MDOC_BODY):
1148 		outflags &= ~MMAN_spc;
1149 		print_word("(");
1150 		outflags &= ~MMAN_spc;
1151 		break;
1152 	default:
1153 		break;
1154 	}
1155 	return(1);
1156 }
1157 
1158 static void
post_fo(DECL_ARGS)1159 post_fo(DECL_ARGS)
1160 {
1161 
1162 	switch (n->type) {
1163 	case (MDOC_HEAD):
1164 		font_pop();
1165 		break;
1166 	case (MDOC_BODY):
1167 		post_fn(meta, n);
1168 		break;
1169 	default:
1170 		break;
1171 	}
1172 }
1173 
1174 static int
pre_ft(DECL_ARGS)1175 pre_ft(DECL_ARGS)
1176 {
1177 
1178 	pre_syn(n);
1179 	font_push('I');
1180 	return(1);
1181 }
1182 
1183 static int
pre_in(DECL_ARGS)1184 pre_in(DECL_ARGS)
1185 {
1186 
1187 	if (MDOC_SYNPRETTY & n->flags) {
1188 		pre_syn(n);
1189 		font_push('B');
1190 		print_word("#include <");
1191 		outflags &= ~MMAN_spc;
1192 	} else {
1193 		print_word("<");
1194 		outflags &= ~MMAN_spc;
1195 		font_push('I');
1196 	}
1197 	return(1);
1198 }
1199 
1200 static void
post_in(DECL_ARGS)1201 post_in(DECL_ARGS)
1202 {
1203 
1204 	if (MDOC_SYNPRETTY & n->flags) {
1205 		outflags &= ~MMAN_spc;
1206 		print_word(">");
1207 		font_pop();
1208 		outflags |= MMAN_br;
1209 	} else {
1210 		font_pop();
1211 		outflags &= ~MMAN_spc;
1212 		print_word(">");
1213 	}
1214 }
1215 
1216 static int
pre_it(DECL_ARGS)1217 pre_it(DECL_ARGS)
1218 {
1219 	const struct mdoc_node *bln;
1220 
1221 	switch (n->type) {
1222 	case (MDOC_HEAD):
1223 		outflags |= MMAN_PP | MMAN_nl;
1224 		bln = n->parent->parent;
1225 		if (0 == bln->norm->Bl.comp ||
1226 		    (NULL == n->parent->prev &&
1227 		     NULL == bln->parent->prev))
1228 			outflags |= MMAN_sp;
1229 		outflags &= ~MMAN_br;
1230 		switch (bln->norm->Bl.type) {
1231 		case (LIST_item):
1232 			return(0);
1233 		case (LIST_inset):
1234 			/* FALLTHROUGH */
1235 		case (LIST_diag):
1236 			/* FALLTHROUGH */
1237 		case (LIST_ohang):
1238 			if (bln->norm->Bl.type == LIST_diag)
1239 				print_line(".B \"", 0);
1240 			else
1241 				print_line(".R \"", 0);
1242 			outflags &= ~MMAN_spc;
1243 			return(1);
1244 		case (LIST_bullet):
1245 			/* FALLTHROUGH */
1246 		case (LIST_dash):
1247 			/* FALLTHROUGH */
1248 		case (LIST_hyphen):
1249 			print_width(bln->norm->Bl.width, NULL, 0);
1250 			TPremain = 0;
1251 			outflags |= MMAN_nl;
1252 			font_push('B');
1253 			if (LIST_bullet == bln->norm->Bl.type)
1254 				print_word("o");
1255 			else
1256 				print_word("-");
1257 			font_pop();
1258 			break;
1259 		case (LIST_enum):
1260 			print_width(bln->norm->Bl.width, NULL, 0);
1261 			TPremain = 0;
1262 			outflags |= MMAN_nl;
1263 			print_count(&bln->norm->Bl.count);
1264 			break;
1265 		case (LIST_hang):
1266 			print_width(bln->norm->Bl.width, n->child, 6);
1267 			TPremain = 0;
1268 			break;
1269 		case (LIST_tag):
1270 			print_width(bln->norm->Bl.width, n->child, 0);
1271 			putchar('\n');
1272 			outflags &= ~MMAN_spc;
1273 			return(1);
1274 		default:
1275 			return(1);
1276 		}
1277 		outflags |= MMAN_nl;
1278 	default:
1279 		break;
1280 	}
1281 	return(1);
1282 }
1283 
1284 /*
1285  * This function is called after closing out an indented block.
1286  * If we are inside an enclosing list, restore its indentation.
1287  */
1288 static void
mid_it(void)1289 mid_it(void)
1290 {
1291 	char		 buf[24];
1292 
1293 	/* Nothing to do outside a list. */
1294 	if (0 == Bl_stack_len || 0 == Bl_stack[Bl_stack_len - 1])
1295 		return;
1296 
1297 	/* The indentation has already been set up. */
1298 	if (Bl_stack_post[Bl_stack_len - 1])
1299 		return;
1300 
1301 	/* Restore the indentation of the enclosing list. */
1302 	print_line(".RS", MMAN_Bk_susp);
1303 	snprintf(buf, sizeof(buf), "%zun", Bl_stack[Bl_stack_len - 1]);
1304 	print_word(buf);
1305 
1306 	/* Remeber to close out this .RS block later. */
1307 	Bl_stack_post[Bl_stack_len - 1] = 1;
1308 }
1309 
1310 static void
post_it(DECL_ARGS)1311 post_it(DECL_ARGS)
1312 {
1313 	const struct mdoc_node *bln;
1314 
1315 	bln = n->parent->parent;
1316 
1317 	switch (n->type) {
1318 	case (MDOC_HEAD):
1319 		switch (bln->norm->Bl.type) {
1320 		case (LIST_diag):
1321 			outflags &= ~MMAN_spc;
1322 			print_word("\\ ");
1323 			break;
1324 		case (LIST_ohang):
1325 			outflags |= MMAN_br;
1326 			break;
1327 		default:
1328 			break;
1329 		}
1330 		break;
1331 	case (MDOC_BODY):
1332 		switch (bln->norm->Bl.type) {
1333 		case (LIST_bullet):
1334 			/* FALLTHROUGH */
1335 		case (LIST_dash):
1336 			/* FALLTHROUGH */
1337 		case (LIST_hyphen):
1338 			/* FALLTHROUGH */
1339 		case (LIST_enum):
1340 			/* FALLTHROUGH */
1341 		case (LIST_hang):
1342 			/* FALLTHROUGH */
1343 		case (LIST_tag):
1344 			assert(Bl_stack_len);
1345 			Bl_stack[--Bl_stack_len] = 0;
1346 
1347 			/*
1348 			 * Our indentation had to be restored
1349 			 * after a child display or child list.
1350 			 * Close out that indentation block now.
1351 			 */
1352 			if (Bl_stack_post[Bl_stack_len]) {
1353 				print_line(".RE", MMAN_nl);
1354 				Bl_stack_post[Bl_stack_len] = 0;
1355 			}
1356 			break;
1357 		case (LIST_column):
1358 			if (NULL != n->next) {
1359 				putchar('\t');
1360 				outflags &= ~MMAN_spc;
1361 			}
1362 			break;
1363 		default:
1364 			break;
1365 		}
1366 		break;
1367 	default:
1368 		break;
1369 	}
1370 }
1371 
1372 static void
post_lb(DECL_ARGS)1373 post_lb(DECL_ARGS)
1374 {
1375 
1376 	if (SEC_LIBRARY == n->sec)
1377 		outflags |= MMAN_br;
1378 }
1379 
1380 static int
pre_lk(DECL_ARGS)1381 pre_lk(DECL_ARGS)
1382 {
1383 	const struct mdoc_node *link, *descr;
1384 
1385 	if (NULL == (link = n->child))
1386 		return(0);
1387 
1388 	if (NULL != (descr = link->next)) {
1389 		font_push('I');
1390 		while (NULL != descr) {
1391 			print_word(descr->string);
1392 			descr = descr->next;
1393 		}
1394 		print_word(":");
1395 		font_pop();
1396 	}
1397 
1398 	font_push('B');
1399 	print_word(link->string);
1400 	font_pop();
1401 	return(0);
1402 }
1403 
1404 static int
pre_li(DECL_ARGS)1405 pre_li(DECL_ARGS)
1406 {
1407 
1408 	font_push('R');
1409 	return(1);
1410 }
1411 
1412 static int
pre_nm(DECL_ARGS)1413 pre_nm(DECL_ARGS)
1414 {
1415 	char	*name;
1416 
1417 	if (MDOC_BLOCK == n->type) {
1418 		outflags |= MMAN_Bk;
1419 		pre_syn(n);
1420 	}
1421 	if (MDOC_ELEM != n->type && MDOC_HEAD != n->type)
1422 		return(1);
1423 	name = n->child ? n->child->string : meta->name;
1424 	if (NULL == name)
1425 		return(0);
1426 	if (MDOC_HEAD == n->type) {
1427 		if (NULL == n->parent->prev)
1428 			outflags |= MMAN_sp;
1429 		print_block(".HP", 0);
1430 		printf(" %zun", strlen(name) + 1);
1431 		outflags |= MMAN_nl;
1432 	}
1433 	font_push('B');
1434 	if (NULL == n->child)
1435 		print_word(meta->name);
1436 	return(1);
1437 }
1438 
1439 static void
post_nm(DECL_ARGS)1440 post_nm(DECL_ARGS)
1441 {
1442 
1443 	switch (n->type) {
1444 	case (MDOC_BLOCK):
1445 		outflags &= ~MMAN_Bk;
1446 		break;
1447 	case (MDOC_HEAD):
1448 		/* FALLTHROUGH */
1449 	case (MDOC_ELEM):
1450 		font_pop();
1451 		break;
1452 	default:
1453 		break;
1454 	}
1455 }
1456 
1457 static int
pre_no(DECL_ARGS)1458 pre_no(DECL_ARGS)
1459 {
1460 
1461 	outflags |= MMAN_spc_force;
1462 	return(1);
1463 }
1464 
1465 static int
pre_ns(DECL_ARGS)1466 pre_ns(DECL_ARGS)
1467 {
1468 
1469 	outflags &= ~MMAN_spc;
1470 	return(0);
1471 }
1472 
1473 static void
post_pf(DECL_ARGS)1474 post_pf(DECL_ARGS)
1475 {
1476 
1477 	outflags &= ~MMAN_spc;
1478 }
1479 
1480 static int
pre_pp(DECL_ARGS)1481 pre_pp(DECL_ARGS)
1482 {
1483 
1484 	if (MDOC_It != n->parent->tok)
1485 		outflags |= MMAN_PP;
1486 	outflags |= MMAN_sp | MMAN_nl;
1487 	outflags &= ~MMAN_br;
1488 	return(0);
1489 }
1490 
1491 static int
pre_rs(DECL_ARGS)1492 pre_rs(DECL_ARGS)
1493 {
1494 
1495 	if (SEC_SEE_ALSO == n->sec) {
1496 		outflags |= MMAN_PP | MMAN_sp | MMAN_nl;
1497 		outflags &= ~MMAN_br;
1498 	}
1499 	return(1);
1500 }
1501 
1502 static int
pre_sm(DECL_ARGS)1503 pre_sm(DECL_ARGS)
1504 {
1505 
1506 	assert(n->child && MDOC_TEXT == n->child->type);
1507 	if (0 == strcmp("on", n->child->string))
1508 		outflags |= MMAN_Sm | MMAN_spc;
1509 	else
1510 		outflags &= ~MMAN_Sm;
1511 	return(0);
1512 }
1513 
1514 static int
pre_sp(DECL_ARGS)1515 pre_sp(DECL_ARGS)
1516 {
1517 
1518 	if (MMAN_PP & outflags) {
1519 		outflags &= ~MMAN_PP;
1520 		print_line(".PP", 0);
1521 	} else
1522 		print_line(".sp", 0);
1523 	return(1);
1524 }
1525 
1526 static void
post_sp(DECL_ARGS)1527 post_sp(DECL_ARGS)
1528 {
1529 
1530 	outflags |= MMAN_nl;
1531 }
1532 
1533 static int
pre_sy(DECL_ARGS)1534 pre_sy(DECL_ARGS)
1535 {
1536 
1537 	font_push('B');
1538 	return(1);
1539 }
1540 
1541 static int
pre_vt(DECL_ARGS)1542 pre_vt(DECL_ARGS)
1543 {
1544 
1545 	if (MDOC_SYNPRETTY & n->flags) {
1546 		switch (n->type) {
1547 		case (MDOC_BLOCK):
1548 			pre_syn(n);
1549 			return(1);
1550 		case (MDOC_BODY):
1551 			break;
1552 		default:
1553 			return(0);
1554 		}
1555 	}
1556 	font_push('I');
1557 	return(1);
1558 }
1559 
1560 static void
post_vt(DECL_ARGS)1561 post_vt(DECL_ARGS)
1562 {
1563 
1564 	if (MDOC_SYNPRETTY & n->flags && MDOC_BODY != n->type)
1565 		return;
1566 	font_pop();
1567 }
1568 
1569 static int
pre_xr(DECL_ARGS)1570 pre_xr(DECL_ARGS)
1571 {
1572 
1573 	n = n->child;
1574 	if (NULL == n)
1575 		return(0);
1576 	print_node(meta, n);
1577 	n = n->next;
1578 	if (NULL == n)
1579 		return(0);
1580 	outflags &= ~MMAN_spc;
1581 	print_word("(");
1582 	print_node(meta, n);
1583 	print_word(")");
1584 	return(0);
1585 }
1586 
1587 static int
pre_ux(DECL_ARGS)1588 pre_ux(DECL_ARGS)
1589 {
1590 
1591 	print_word(manacts[n->tok].prefix);
1592 	if (NULL == n->child)
1593 		return(0);
1594 	outflags &= ~MMAN_spc;
1595 	print_word("\\ ");
1596 	outflags &= ~MMAN_spc;
1597 	return(1);
1598 }
1599