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
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
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
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
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
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
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
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
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
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
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
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
619 cond_head(DECL_ARGS)
620 {
621
622 return(MDOC_HEAD == n->type);
623 }
624
625 static int
626 cond_body(DECL_ARGS)
627 {
628
629 return(MDOC_BODY == n->type);
630 }
631
632 static int
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
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
658 post_font(DECL_ARGS)
659 {
660
661 font_pop();
662 }
663
664 static void
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
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
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
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
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
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
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
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
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
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
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
873 post_bf(DECL_ARGS)
874 {
875
876 if (MDOC_BODY == n->type)
877 font_pop();
878 }
879
880 static int
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
896 post_bk(DECL_ARGS)
897 {
898
899 if (MDOC_BODY == n->type)
900 outflags &= ~MMAN_Bk;
901 }
902
903 static int
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
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
968 pre_br(DECL_ARGS)
969 {
970
971 outflags |= MMAN_br;
972 return(0);
973 }
974
975 static int
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
996 pre_dl(DECL_ARGS)
997 {
998
999 print_offs("6n");
1000 return(1);
1001 }
1002
1003 static void
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
1015 pre_em(DECL_ARGS)
1016 {
1017
1018 font_push('I');
1019 return(1);
1020 }
1021
1022 static void
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
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
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
1061 pre_fd(DECL_ARGS)
1062 {
1063
1064 pre_syn(n);
1065 font_push('B');
1066 return(1);
1067 }
1068
1069 static void
1070 post_fd(DECL_ARGS)
1071 {
1072
1073 font_pop();
1074 outflags |= MMAN_br;
1075 }
1076
1077 static int
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
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
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
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
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
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
1175 pre_ft(DECL_ARGS)
1176 {
1177
1178 pre_syn(n);
1179 font_push('I');
1180 return(1);
1181 }
1182
1183 static int
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
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
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
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
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
1373 post_lb(DECL_ARGS)
1374 {
1375
1376 if (SEC_LIBRARY == n->sec)
1377 outflags |= MMAN_br;
1378 }
1379
1380 static int
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
1405 pre_li(DECL_ARGS)
1406 {
1407
1408 font_push('R');
1409 return(1);
1410 }
1411
1412 static int
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
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
1458 pre_no(DECL_ARGS)
1459 {
1460
1461 outflags |= MMAN_spc_force;
1462 return(1);
1463 }
1464
1465 static int
1466 pre_ns(DECL_ARGS)
1467 {
1468
1469 outflags &= ~MMAN_spc;
1470 return(0);
1471 }
1472
1473 static void
1474 post_pf(DECL_ARGS)
1475 {
1476
1477 outflags &= ~MMAN_spc;
1478 }
1479
1480 static int
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
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
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
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
1527 post_sp(DECL_ARGS)
1528 {
1529
1530 outflags |= MMAN_nl;
1531 }
1532
1533 static int
1534 pre_sy(DECL_ARGS)
1535 {
1536
1537 font_push('B');
1538 return(1);
1539 }
1540
1541 static int
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
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
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
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 }