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[mandoc.git] / mdoc_man.c
1 /* $Id: mdoc_man.c,v 1.87 2015/02/12 12:24:33 schwarze Exp $ */
2 /*
3 * Copyright (c) 2011-2015 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 #include "config.h"
18
19 #include <sys/types.h>
20
21 #include <assert.h>
22 #include <stdio.h>
23 #include <string.h>
24
25 #include "mandoc.h"
26 #include "mandoc_aux.h"
27 #include "out.h"
28 #include "man.h"
29 #include "mdoc.h"
30 #include "main.h"
31
32 #define DECL_ARGS const struct mdoc_meta *meta, 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_aq(DECL_ARGS);
49 static void post_bd(DECL_ARGS);
50 static void post_bf(DECL_ARGS);
51 static void post_bk(DECL_ARGS);
52 static void post_bl(DECL_ARGS);
53 static void post_dl(DECL_ARGS);
54 static void post_en(DECL_ARGS);
55 static void post_enc(DECL_ARGS);
56 static void post_eo(DECL_ARGS);
57 static void post_fa(DECL_ARGS);
58 static void post_fd(DECL_ARGS);
59 static void post_fl(DECL_ARGS);
60 static void post_fn(DECL_ARGS);
61 static void post_fo(DECL_ARGS);
62 static void post_font(DECL_ARGS);
63 static void post_in(DECL_ARGS);
64 static void post_it(DECL_ARGS);
65 static void post_lb(DECL_ARGS);
66 static void post_nm(DECL_ARGS);
67 static void post_percent(DECL_ARGS);
68 static void post_pf(DECL_ARGS);
69 static void post_sect(DECL_ARGS);
70 static void post_sp(DECL_ARGS);
71 static void post_vt(DECL_ARGS);
72 static int pre__t(DECL_ARGS);
73 static int pre_an(DECL_ARGS);
74 static int pre_ap(DECL_ARGS);
75 static int pre_aq(DECL_ARGS);
76 static int pre_bd(DECL_ARGS);
77 static int pre_bf(DECL_ARGS);
78 static int pre_bk(DECL_ARGS);
79 static int pre_bl(DECL_ARGS);
80 static int pre_br(DECL_ARGS);
81 static int pre_bx(DECL_ARGS);
82 static int pre_dl(DECL_ARGS);
83 static int pre_en(DECL_ARGS);
84 static int pre_enc(DECL_ARGS);
85 static int pre_em(DECL_ARGS);
86 static int pre_skip(DECL_ARGS);
87 static int pre_eo(DECL_ARGS);
88 static int pre_ex(DECL_ARGS);
89 static int pre_fa(DECL_ARGS);
90 static int pre_fd(DECL_ARGS);
91 static int pre_fl(DECL_ARGS);
92 static int pre_fn(DECL_ARGS);
93 static int pre_fo(DECL_ARGS);
94 static int pre_ft(DECL_ARGS);
95 static int pre_in(DECL_ARGS);
96 static int pre_it(DECL_ARGS);
97 static int pre_lk(DECL_ARGS);
98 static int pre_li(DECL_ARGS);
99 static int pre_ll(DECL_ARGS);
100 static int pre_nm(DECL_ARGS);
101 static int pre_no(DECL_ARGS);
102 static int pre_ns(DECL_ARGS);
103 static int pre_pp(DECL_ARGS);
104 static int pre_rs(DECL_ARGS);
105 static int pre_rv(DECL_ARGS);
106 static int pre_sm(DECL_ARGS);
107 static int pre_sp(DECL_ARGS);
108 static int pre_sect(DECL_ARGS);
109 static int pre_sy(DECL_ARGS);
110 static void pre_syn(const struct mdoc_node *);
111 static int pre_vt(DECL_ARGS);
112 static int pre_ux(DECL_ARGS);
113 static int pre_xr(DECL_ARGS);
114 static void print_word(const char *);
115 static void print_line(const char *, int);
116 static void print_block(const char *, int);
117 static void print_offs(const char *, int);
118 static void print_width(const struct mdoc_bl *,
119 const struct mdoc_node *);
120 static void print_count(int *);
121 static void print_node(DECL_ARGS);
122
123 static const struct manact manacts[MDOC_MAX + 1] = {
124 { NULL, pre_ap, NULL, NULL, NULL }, /* Ap */
125 { NULL, NULL, NULL, NULL, NULL }, /* Dd */
126 { NULL, NULL, NULL, NULL, NULL }, /* Dt */
127 { NULL, NULL, NULL, NULL, NULL }, /* Os */
128 { NULL, pre_sect, post_sect, ".SH", NULL }, /* Sh */
129 { NULL, pre_sect, post_sect, ".SS", NULL }, /* Ss */
130 { NULL, pre_pp, NULL, NULL, NULL }, /* Pp */
131 { cond_body, pre_dl, post_dl, NULL, NULL }, /* D1 */
132 { cond_body, pre_dl, post_dl, NULL, NULL }, /* Dl */
133 { cond_body, pre_bd, post_bd, NULL, NULL }, /* Bd */
134 { NULL, NULL, NULL, NULL, NULL }, /* Ed */
135 { cond_body, pre_bl, post_bl, NULL, NULL }, /* Bl */
136 { NULL, NULL, NULL, NULL, NULL }, /* El */
137 { NULL, pre_it, post_it, NULL, NULL }, /* It */
138 { NULL, pre_em, post_font, NULL, NULL }, /* Ad */
139 { NULL, pre_an, NULL, NULL, NULL }, /* An */
140 { NULL, pre_em, post_font, NULL, NULL }, /* Ar */
141 { NULL, pre_sy, post_font, NULL, NULL }, /* Cd */
142 { NULL, pre_sy, post_font, NULL, NULL }, /* Cm */
143 { NULL, pre_li, post_font, NULL, NULL }, /* Dv */
144 { NULL, pre_li, post_font, NULL, NULL }, /* Er */
145 { NULL, pre_li, post_font, NULL, NULL }, /* Ev */
146 { NULL, pre_ex, NULL, NULL, NULL }, /* Ex */
147 { NULL, pre_fa, post_fa, NULL, NULL }, /* Fa */
148 { NULL, pre_fd, post_fd, NULL, NULL }, /* Fd */
149 { NULL, pre_fl, post_fl, NULL, NULL }, /* Fl */
150 { NULL, pre_fn, post_fn, NULL, NULL }, /* Fn */
151 { NULL, pre_ft, post_font, NULL, NULL }, /* Ft */
152 { NULL, pre_sy, post_font, NULL, NULL }, /* Ic */
153 { NULL, pre_in, post_in, NULL, NULL }, /* In */
154 { NULL, pre_li, post_font, NULL, NULL }, /* Li */
155 { cond_head, pre_enc, NULL, "\\- ", NULL }, /* Nd */
156 { NULL, pre_nm, post_nm, NULL, NULL }, /* Nm */
157 { cond_body, pre_enc, post_enc, "[", "]" }, /* Op */
158 { NULL, pre_ft, post_font, NULL, NULL }, /* Ot */
159 { NULL, pre_em, post_font, NULL, NULL }, /* Pa */
160 { NULL, pre_rv, NULL, NULL, NULL }, /* Rv */
161 { NULL, NULL, NULL, NULL, NULL }, /* St */
162 { NULL, pre_em, post_font, NULL, NULL }, /* Va */
163 { NULL, pre_vt, post_vt, NULL, NULL }, /* Vt */
164 { NULL, pre_xr, NULL, NULL, NULL }, /* Xr */
165 { NULL, NULL, post_percent, NULL, NULL }, /* %A */
166 { NULL, pre_em, post_percent, NULL, NULL }, /* %B */
167 { NULL, NULL, post_percent, NULL, NULL }, /* %D */
168 { NULL, pre_em, post_percent, NULL, NULL }, /* %I */
169 { NULL, pre_em, post_percent, NULL, NULL }, /* %J */
170 { NULL, NULL, post_percent, NULL, NULL }, /* %N */
171 { NULL, NULL, post_percent, NULL, NULL }, /* %O */
172 { NULL, NULL, post_percent, NULL, NULL }, /* %P */
173 { NULL, NULL, post_percent, NULL, NULL }, /* %R */
174 { NULL, pre__t, post__t, NULL, NULL }, /* %T */
175 { NULL, NULL, post_percent, NULL, NULL }, /* %V */
176 { NULL, NULL, NULL, NULL, NULL }, /* Ac */
177 { cond_body, pre_aq, post_aq, NULL, NULL }, /* Ao */
178 { cond_body, pre_aq, post_aq, NULL, NULL }, /* Aq */
179 { NULL, NULL, NULL, NULL, NULL }, /* At */
180 { NULL, NULL, NULL, NULL, NULL }, /* Bc */
181 { NULL, pre_bf, post_bf, NULL, NULL }, /* Bf */
182 { cond_body, pre_enc, post_enc, "[", "]" }, /* Bo */
183 { cond_body, pre_enc, post_enc, "[", "]" }, /* Bq */
184 { NULL, pre_ux, NULL, "BSD/OS", NULL }, /* Bsx */
185 { NULL, pre_bx, NULL, NULL, NULL }, /* Bx */
186 { NULL, pre_skip, NULL, NULL, NULL }, /* Db */
187 { NULL, NULL, NULL, NULL, NULL }, /* Dc */
188 { cond_body, pre_enc, post_enc, "\\(lq", "\\(rq" }, /* Do */
189 { cond_body, pre_enc, post_enc, "\\(lq", "\\(rq" }, /* Dq */
190 { NULL, NULL, NULL, NULL, NULL }, /* Ec */
191 { NULL, NULL, NULL, NULL, NULL }, /* Ef */
192 { NULL, pre_em, post_font, NULL, NULL }, /* Em */
193 { cond_body, pre_eo, post_eo, NULL, NULL }, /* Eo */
194 { NULL, pre_ux, NULL, "FreeBSD", NULL }, /* Fx */
195 { NULL, pre_sy, post_font, NULL, NULL }, /* Ms */
196 { NULL, pre_no, NULL, NULL, NULL }, /* No */
197 { NULL, pre_ns, NULL, NULL, NULL }, /* Ns */
198 { NULL, pre_ux, NULL, "NetBSD", NULL }, /* Nx */
199 { NULL, pre_ux, NULL, "OpenBSD", NULL }, /* Ox */
200 { NULL, NULL, NULL, NULL, NULL }, /* Pc */
201 { NULL, NULL, post_pf, NULL, NULL }, /* Pf */
202 { cond_body, pre_enc, post_enc, "(", ")" }, /* Po */
203 { cond_body, pre_enc, post_enc, "(", ")" }, /* Pq */
204 { NULL, NULL, NULL, NULL, NULL }, /* Qc */
205 { cond_body, pre_enc, post_enc, "\\(oq", "\\(cq" }, /* Ql */
206 { cond_body, pre_enc, post_enc, "\"", "\"" }, /* Qo */
207 { cond_body, pre_enc, post_enc, "\"", "\"" }, /* Qq */
208 { NULL, NULL, NULL, NULL, NULL }, /* Re */
209 { cond_body, pre_rs, NULL, NULL, NULL }, /* Rs */
210 { NULL, NULL, NULL, NULL, NULL }, /* Sc */
211 { cond_body, pre_enc, post_enc, "\\(oq", "\\(cq" }, /* So */
212 { cond_body, pre_enc, post_enc, "\\(oq", "\\(cq" }, /* Sq */
213 { NULL, pre_sm, NULL, NULL, NULL }, /* Sm */
214 { NULL, pre_em, post_font, NULL, NULL }, /* Sx */
215 { NULL, pre_sy, post_font, NULL, NULL }, /* Sy */
216 { NULL, pre_li, post_font, NULL, NULL }, /* Tn */
217 { NULL, pre_ux, NULL, "UNIX", NULL }, /* Ux */
218 { NULL, NULL, NULL, NULL, NULL }, /* Xc */
219 { NULL, NULL, NULL, NULL, NULL }, /* Xo */
220 { NULL, pre_fo, post_fo, NULL, NULL }, /* Fo */
221 { NULL, NULL, NULL, NULL, NULL }, /* Fc */
222 { cond_body, pre_enc, post_enc, "[", "]" }, /* Oo */
223 { NULL, NULL, NULL, NULL, NULL }, /* Oc */
224 { NULL, pre_bk, post_bk, NULL, NULL }, /* Bk */
225 { NULL, NULL, NULL, NULL, NULL }, /* Ek */
226 { NULL, pre_ux, NULL, "is currently in beta test.", NULL }, /* Bt */
227 { NULL, NULL, NULL, NULL, NULL }, /* Hf */
228 { NULL, pre_em, post_font, NULL, NULL }, /* Fr */
229 { NULL, pre_ux, NULL, "currently under development.", NULL }, /* Ud */
230 { NULL, NULL, post_lb, NULL, NULL }, /* Lb */
231 { NULL, pre_pp, NULL, NULL, NULL }, /* Lp */
232 { NULL, pre_lk, NULL, NULL, NULL }, /* Lk */
233 { NULL, pre_em, post_font, NULL, NULL }, /* Mt */
234 { cond_body, pre_enc, post_enc, "{", "}" }, /* Brq */
235 { cond_body, pre_enc, post_enc, "{", "}" }, /* Bro */
236 { NULL, NULL, NULL, NULL, NULL }, /* Brc */
237 { NULL, NULL, post_percent, NULL, NULL }, /* %C */
238 { NULL, pre_skip, NULL, NULL, NULL }, /* Es */
239 { cond_body, pre_en, post_en, NULL, NULL }, /* En */
240 { NULL, pre_ux, NULL, "DragonFly", NULL }, /* Dx */
241 { NULL, NULL, post_percent, NULL, NULL }, /* %Q */
242 { NULL, pre_br, NULL, NULL, NULL }, /* br */
243 { NULL, pre_sp, post_sp, NULL, NULL }, /* sp */
244 { NULL, NULL, post_percent, NULL, NULL }, /* %U */
245 { NULL, NULL, NULL, NULL, NULL }, /* Ta */
246 { NULL, pre_ll, post_sp, NULL, NULL }, /* ll */
247 { NULL, NULL, NULL, NULL, NULL }, /* ROOT */
248 };
249
250 static int outflags;
251 #define MMAN_spc (1 << 0) /* blank character before next word */
252 #define MMAN_spc_force (1 << 1) /* even before trailing punctuation */
253 #define MMAN_nl (1 << 2) /* break man(7) code line */
254 #define MMAN_br (1 << 3) /* break output line */
255 #define MMAN_sp (1 << 4) /* insert a blank output line */
256 #define MMAN_PP (1 << 5) /* reset indentation etc. */
257 #define MMAN_Sm (1 << 6) /* horizontal spacing mode */
258 #define MMAN_Bk (1 << 7) /* word keep mode */
259 #define MMAN_Bk_susp (1 << 8) /* suspend this (after a macro) */
260 #define MMAN_An_split (1 << 9) /* author mode is "split" */
261 #define MMAN_An_nosplit (1 << 10) /* author mode is "nosplit" */
262 #define MMAN_PD (1 << 11) /* inter-paragraph spacing disabled */
263 #define MMAN_nbrword (1 << 12) /* do not break the next word */
264
265 #define BL_STACK_MAX 32
266
267 static int Bl_stack[BL_STACK_MAX]; /* offsets [chars] */
268 static int Bl_stack_post[BL_STACK_MAX]; /* add final .RE */
269 static int Bl_stack_len; /* number of nested Bl blocks */
270 static int TPremain; /* characters before tag is full */
271
272 static struct {
273 char *head;
274 char *tail;
275 size_t size;
276 } fontqueue;
277
278
279 static void
280 font_push(char newfont)
281 {
282
283 if (fontqueue.head + fontqueue.size <= ++fontqueue.tail) {
284 fontqueue.size += 8;
285 fontqueue.head = mandoc_realloc(fontqueue.head,
286 fontqueue.size);
287 }
288 *fontqueue.tail = newfont;
289 print_word("");
290 printf("\\f");
291 putchar(newfont);
292 outflags &= ~MMAN_spc;
293 }
294
295 static void
296 font_pop(void)
297 {
298
299 if (fontqueue.tail > fontqueue.head)
300 fontqueue.tail--;
301 outflags &= ~MMAN_spc;
302 print_word("");
303 printf("\\f");
304 putchar(*fontqueue.tail);
305 }
306
307 static void
308 print_word(const char *s)
309 {
310
311 if ((MMAN_PP | MMAN_sp | MMAN_br | MMAN_nl) & outflags) {
312 /*
313 * If we need a newline, print it now and start afresh.
314 */
315 if (MMAN_PP & outflags) {
316 if (MMAN_sp & outflags) {
317 if (MMAN_PD & outflags) {
318 printf("\n.PD");
319 outflags &= ~MMAN_PD;
320 }
321 } else if ( ! (MMAN_PD & outflags)) {
322 printf("\n.PD 0");
323 outflags |= MMAN_PD;
324 }
325 printf("\n.PP\n");
326 } else if (MMAN_sp & outflags)
327 printf("\n.sp\n");
328 else if (MMAN_br & outflags)
329 printf("\n.br\n");
330 else if (MMAN_nl & outflags)
331 putchar('\n');
332 outflags &= ~(MMAN_PP|MMAN_sp|MMAN_br|MMAN_nl|MMAN_spc);
333 if (1 == TPremain)
334 printf(".br\n");
335 TPremain = 0;
336 } else if (MMAN_spc & outflags) {
337 /*
338 * If we need a space, only print it if
339 * (1) it is forced by `No' or
340 * (2) what follows is not terminating punctuation or
341 * (3) what follows is longer than one character.
342 */
343 if (MMAN_spc_force & outflags || '\0' == s[0] ||
344 NULL == strchr(".,:;)]?!", s[0]) || '\0' != s[1]) {
345 if (MMAN_Bk & outflags &&
346 ! (MMAN_Bk_susp & outflags))
347 putchar('\\');
348 putchar(' ');
349 if (TPremain)
350 TPremain--;
351 }
352 }
353
354 /*
355 * Reassign needing space if we're not following opening
356 * punctuation.
357 */
358 if (MMAN_Sm & outflags && ('\0' == s[0] ||
359 (('(' != s[0] && '[' != s[0]) || '\0' != s[1])))
360 outflags |= MMAN_spc;
361 else
362 outflags &= ~MMAN_spc;
363 outflags &= ~(MMAN_spc_force | MMAN_Bk_susp);
364
365 for ( ; *s; s++) {
366 switch (*s) {
367 case ASCII_NBRSP:
368 printf("\\ ");
369 break;
370 case ASCII_HYPH:
371 putchar('-');
372 break;
373 case ASCII_BREAK:
374 printf("\\:");
375 break;
376 case ' ':
377 if (MMAN_nbrword & outflags) {
378 printf("\\ ");
379 break;
380 }
381 /* FALLTHROUGH */
382 default:
383 putchar((unsigned char)*s);
384 break;
385 }
386 if (TPremain)
387 TPremain--;
388 }
389 outflags &= ~MMAN_nbrword;
390 }
391
392 static void
393 print_line(const char *s, int newflags)
394 {
395
396 outflags &= ~MMAN_br;
397 outflags |= MMAN_nl;
398 print_word(s);
399 outflags |= newflags;
400 }
401
402 static void
403 print_block(const char *s, int newflags)
404 {
405
406 outflags &= ~MMAN_PP;
407 if (MMAN_sp & outflags) {
408 outflags &= ~(MMAN_sp | MMAN_br);
409 if (MMAN_PD & outflags) {
410 print_line(".PD", 0);
411 outflags &= ~MMAN_PD;
412 }
413 } else if (! (MMAN_PD & outflags))
414 print_line(".PD 0", MMAN_PD);
415 outflags |= MMAN_nl;
416 print_word(s);
417 outflags |= MMAN_Bk_susp | newflags;
418 }
419
420 static void
421 print_offs(const char *v, int keywords)
422 {
423 char buf[24];
424 struct roffsu su;
425 int sz;
426
427 print_line(".RS", MMAN_Bk_susp);
428
429 /* Convert v into a number (of characters). */
430 if (NULL == v || '\0' == *v || (keywords && !strcmp(v, "left")))
431 sz = 0;
432 else if (keywords && !strcmp(v, "indent"))
433 sz = 6;
434 else if (keywords && !strcmp(v, "indent-two"))
435 sz = 12;
436 else if (a2roffsu(v, &su, SCALE_EN) > 1) {
437 if (SCALE_EN == su.unit)
438 sz = su.scale;
439 else {
440 /*
441 * XXX
442 * If we are inside an enclosing list,
443 * there is no easy way to add the two
444 * indentations because they are provided
445 * in terms of different units.
446 */
447 print_word(v);
448 outflags |= MMAN_nl;
449 return;
450 }
451 } else
452 sz = strlen(v);
453
454 /*
455 * We are inside an enclosing list.
456 * Add the two indentations.
457 */
458 if (Bl_stack_len)
459 sz += Bl_stack[Bl_stack_len - 1];
460
461 (void)snprintf(buf, sizeof(buf), "%dn", sz);
462 print_word(buf);
463 outflags |= MMAN_nl;
464 }
465
466 /*
467 * Set up the indentation for a list item; used from pre_it().
468 */
469 static void
470 print_width(const struct mdoc_bl *bl, const struct mdoc_node *child)
471 {
472 char buf[24];
473 struct roffsu su;
474 int numeric, remain, sz, chsz;
475
476 numeric = 1;
477 remain = 0;
478
479 /* Convert the width into a number (of characters). */
480 if (bl->width == NULL)
481 sz = (bl->type == LIST_hang) ? 6 : 0;
482 else if (a2roffsu(bl->width, &su, SCALE_MAX) > 1) {
483 if (SCALE_EN == su.unit)
484 sz = su.scale;
485 else {
486 sz = 0;
487 numeric = 0;
488 }
489 } else
490 sz = strlen(bl->width);
491
492 /* XXX Rough estimation, might have multiple parts. */
493 if (bl->type == LIST_enum)
494 chsz = (bl->count > 8) + 1;
495 else if (child != NULL && child->type == MDOC_TEXT)
496 chsz = strlen(child->string);
497 else
498 chsz = 0;
499
500 /* Maybe we are inside an enclosing list? */
501 mid_it();
502
503 /*
504 * Save our own indentation,
505 * such that child lists can use it.
506 */
507 Bl_stack[Bl_stack_len++] = sz + 2;
508
509 /* Set up the current list. */
510 if (chsz > sz && bl->type != LIST_tag)
511 print_block(".HP", 0);
512 else {
513 print_block(".TP", 0);
514 remain = sz + 2;
515 }
516 if (numeric) {
517 (void)snprintf(buf, sizeof(buf), "%dn", sz + 2);
518 print_word(buf);
519 } else
520 print_word(bl->width);
521 TPremain = remain;
522 }
523
524 static void
525 print_count(int *count)
526 {
527 char buf[24];
528
529 (void)snprintf(buf, sizeof(buf), "%d.\\&", ++*count);
530 print_word(buf);
531 }
532
533 void
534 man_man(void *arg, const struct man *man)
535 {
536
537 /*
538 * Dump the keep buffer.
539 * We're guaranteed by now that this exists (is non-NULL).
540 * Flush stdout afterward, just in case.
541 */
542 fputs(mparse_getkeep(man_mparse(man)), stdout);
543 fflush(stdout);
544 }
545
546 void
547 man_mdoc(void *arg, const struct mdoc *mdoc)
548 {
549 const struct mdoc_meta *meta;
550 struct mdoc_node *n;
551
552 meta = mdoc_meta(mdoc);
553 n = mdoc_node(mdoc)->child;
554
555 printf(".TH \"%s\" \"%s\" \"%s\" \"%s\" \"%s\"\n",
556 meta->title,
557 (meta->msec == NULL ? "" : meta->msec),
558 meta->date, meta->os, meta->vol);
559
560 /* Disable hyphenation and if nroff, disable justification. */
561 printf(".nh\n.if n .ad l");
562
563 outflags = MMAN_nl | MMAN_Sm;
564 if (0 == fontqueue.size) {
565 fontqueue.size = 8;
566 fontqueue.head = fontqueue.tail = mandoc_malloc(8);
567 *fontqueue.tail = 'R';
568 }
569 while (n != NULL) {
570 print_node(meta, n);
571 n = n->next;
572 }
573 putchar('\n');
574 }
575
576 static void
577 print_node(DECL_ARGS)
578 {
579 const struct manact *act;
580 struct mdoc_node *sub;
581 int cond, do_sub;
582
583 /*
584 * Break the line if we were parsed subsequent the current node.
585 * This makes the page structure be more consistent.
586 */
587 if (MMAN_spc & outflags && MDOC_LINE & n->flags)
588 outflags |= MMAN_nl;
589
590 act = NULL;
591 cond = 0;
592 do_sub = 1;
593 n->flags &= ~MDOC_ENDED;
594
595 if (MDOC_TEXT == n->type) {
596 /*
597 * Make sure that we don't happen to start with a
598 * control character at the start of a line.
599 */
600 if (MMAN_nl & outflags &&
601 ('.' == *n->string || '\'' == *n->string)) {
602 print_word("");
603 printf("\\&");
604 outflags &= ~MMAN_spc;
605 }
606 if (outflags & MMAN_Sm && ! (n->flags & MDOC_DELIMC))
607 outflags |= MMAN_spc_force;
608 print_word(n->string);
609 if (outflags & MMAN_Sm && ! (n->flags & MDOC_DELIMO))
610 outflags |= MMAN_spc;
611 } else {
612 /*
613 * Conditionally run the pre-node action handler for a
614 * node.
615 */
616 act = manacts + n->tok;
617 cond = act->cond == NULL || (*act->cond)(meta, n);
618 if (cond && act->pre && (n->end == ENDBODY_NOT || n->nchild))
619 do_sub = (*act->pre)(meta, n);
620 }
621
622 /*
623 * Conditionally run all child nodes.
624 * Note that this iterates over children instead of using
625 * recursion. This prevents unnecessary depth in the stack.
626 */
627 if (do_sub)
628 for (sub = n->child; sub; sub = sub->next)
629 print_node(meta, sub);
630
631 /*
632 * Lastly, conditionally run the post-node handler.
633 */
634 if (MDOC_ENDED & n->flags)
635 return;
636
637 if (cond && act->post)
638 (*act->post)(meta, n);
639
640 if (ENDBODY_NOT != n->end)
641 n->body->flags |= MDOC_ENDED;
642
643 if (ENDBODY_NOSPACE == n->end)
644 outflags &= ~(MMAN_spc | MMAN_nl);
645 }
646
647 static int
648 cond_head(DECL_ARGS)
649 {
650
651 return(MDOC_HEAD == n->type);
652 }
653
654 static int
655 cond_body(DECL_ARGS)
656 {
657
658 return(MDOC_BODY == n->type);
659 }
660
661 static int
662 pre_enc(DECL_ARGS)
663 {
664 const char *prefix;
665
666 prefix = manacts[n->tok].prefix;
667 if (NULL == prefix)
668 return(1);
669 print_word(prefix);
670 outflags &= ~MMAN_spc;
671 return(1);
672 }
673
674 static void
675 post_enc(DECL_ARGS)
676 {
677 const char *suffix;
678
679 suffix = manacts[n->tok].suffix;
680 if (NULL == suffix)
681 return;
682 outflags &= ~(MMAN_spc | MMAN_nl);
683 print_word(suffix);
684 }
685
686 static int
687 pre_ex(DECL_ARGS)
688 {
689 int nchild;
690
691 outflags |= MMAN_br | MMAN_nl;
692
693 print_word("The");
694
695 nchild = n->nchild;
696 for (n = n->child; n; n = n->next) {
697 font_push('B');
698 print_word(n->string);
699 font_pop();
700
701 if (n->next == NULL)
702 continue;
703
704 if (nchild > 2) {
705 outflags &= ~MMAN_spc;
706 print_word(",");
707 }
708 if (n->next->next == NULL)
709 print_word("and");
710 }
711
712 if (nchild > 1)
713 print_word("utilities exit\\~0");
714 else
715 print_word("utility exits\\~0");
716
717 print_word("on success, and\\~>0 if an error occurs.");
718 outflags |= MMAN_nl;
719 return(0);
720 }
721
722 static void
723 post_font(DECL_ARGS)
724 {
725
726 font_pop();
727 }
728
729 static void
730 post_percent(DECL_ARGS)
731 {
732
733 if (pre_em == manacts[n->tok].pre)
734 font_pop();
735 if (n->next) {
736 print_word(",");
737 if (n->prev && n->prev->tok == n->tok &&
738 n->next->tok == n->tok)
739 print_word("and");
740 } else {
741 print_word(".");
742 outflags |= MMAN_nl;
743 }
744 }
745
746 static int
747 pre__t(DECL_ARGS)
748 {
749
750 if (n->parent && MDOC_Rs == n->parent->tok &&
751 n->parent->norm->Rs.quote_T) {
752 print_word("");
753 putchar('\"');
754 outflags &= ~MMAN_spc;
755 } else
756 font_push('I');
757 return(1);
758 }
759
760 static void
761 post__t(DECL_ARGS)
762 {
763
764 if (n->parent && MDOC_Rs == n->parent->tok &&
765 n->parent->norm->Rs.quote_T) {
766 outflags &= ~MMAN_spc;
767 print_word("");
768 putchar('\"');
769 } else
770 font_pop();
771 post_percent(meta, n);
772 }
773
774 /*
775 * Print before a section header.
776 */
777 static int
778 pre_sect(DECL_ARGS)
779 {
780
781 if (MDOC_HEAD == n->type) {
782 outflags |= MMAN_sp;
783 print_block(manacts[n->tok].prefix, 0);
784 print_word("");
785 putchar('\"');
786 outflags &= ~MMAN_spc;
787 }
788 return(1);
789 }
790
791 /*
792 * Print subsequent a section header.
793 */
794 static void
795 post_sect(DECL_ARGS)
796 {
797
798 if (MDOC_HEAD != n->type)
799 return;
800 outflags &= ~MMAN_spc;
801 print_word("");
802 putchar('\"');
803 outflags |= MMAN_nl;
804 if (MDOC_Sh == n->tok && SEC_AUTHORS == n->sec)
805 outflags &= ~(MMAN_An_split | MMAN_An_nosplit);
806 }
807
808 /* See mdoc_term.c, synopsis_pre() for comments. */
809 static void
810 pre_syn(const struct mdoc_node *n)
811 {
812
813 if (NULL == n->prev || ! (MDOC_SYNPRETTY & n->flags))
814 return;
815
816 if (n->prev->tok == n->tok &&
817 MDOC_Ft != n->tok &&
818 MDOC_Fo != n->tok &&
819 MDOC_Fn != n->tok) {
820 outflags |= MMAN_br;
821 return;
822 }
823
824 switch (n->prev->tok) {
825 case MDOC_Fd:
826 /* FALLTHROUGH */
827 case MDOC_Fn:
828 /* FALLTHROUGH */
829 case MDOC_Fo:
830 /* FALLTHROUGH */
831 case MDOC_In:
832 /* FALLTHROUGH */
833 case MDOC_Vt:
834 outflags |= MMAN_sp;
835 break;
836 case MDOC_Ft:
837 if (MDOC_Fn != n->tok && MDOC_Fo != n->tok) {
838 outflags |= MMAN_sp;
839 break;
840 }
841 /* FALLTHROUGH */
842 default:
843 outflags |= MMAN_br;
844 break;
845 }
846 }
847
848 static int
849 pre_an(DECL_ARGS)
850 {
851
852 switch (n->norm->An.auth) {
853 case AUTH_split:
854 outflags &= ~MMAN_An_nosplit;
855 outflags |= MMAN_An_split;
856 return(0);
857 case AUTH_nosplit:
858 outflags &= ~MMAN_An_split;
859 outflags |= MMAN_An_nosplit;
860 return(0);
861 default:
862 if (MMAN_An_split & outflags)
863 outflags |= MMAN_br;
864 else if (SEC_AUTHORS == n->sec &&
865 ! (MMAN_An_nosplit & outflags))
866 outflags |= MMAN_An_split;
867 return(1);
868 }
869 }
870
871 static int
872 pre_ap(DECL_ARGS)
873 {
874
875 outflags &= ~MMAN_spc;
876 print_word("'");
877 outflags &= ~MMAN_spc;
878 return(0);
879 }
880
881 static int
882 pre_aq(DECL_ARGS)
883 {
884
885 print_word(n->nchild == 1 &&
886 n->child->tok == MDOC_Mt ? "<" : "\\(la");
887 outflags &= ~MMAN_spc;
888 return(1);
889 }
890
891 static void
892 post_aq(DECL_ARGS)
893 {
894
895 outflags &= ~(MMAN_spc | MMAN_nl);
896 print_word(n->nchild == 1 &&
897 n->child->tok == MDOC_Mt ? ">" : "\\(ra");
898 }
899
900 static int
901 pre_bd(DECL_ARGS)
902 {
903
904 outflags &= ~(MMAN_PP | MMAN_sp | MMAN_br);
905
906 if (DISP_unfilled == n->norm->Bd.type ||
907 DISP_literal == n->norm->Bd.type)
908 print_line(".nf", 0);
909 if (0 == n->norm->Bd.comp && NULL != n->parent->prev)
910 outflags |= MMAN_sp;
911 print_offs(n->norm->Bd.offs, 1);
912 return(1);
913 }
914
915 static void
916 post_bd(DECL_ARGS)
917 {
918
919 /* Close out this display. */
920 print_line(".RE", MMAN_nl);
921 if (DISP_unfilled == n->norm->Bd.type ||
922 DISP_literal == n->norm->Bd.type)
923 print_line(".fi", MMAN_nl);
924
925 /* Maybe we are inside an enclosing list? */
926 if (NULL != n->parent->next)
927 mid_it();
928 }
929
930 static int
931 pre_bf(DECL_ARGS)
932 {
933
934 switch (n->type) {
935 case MDOC_BLOCK:
936 return(1);
937 case MDOC_BODY:
938 break;
939 default:
940 return(0);
941 }
942 switch (n->norm->Bf.font) {
943 case FONT_Em:
944 font_push('I');
945 break;
946 case FONT_Sy:
947 font_push('B');
948 break;
949 default:
950 font_push('R');
951 break;
952 }
953 return(1);
954 }
955
956 static void
957 post_bf(DECL_ARGS)
958 {
959
960 if (MDOC_BODY == n->type)
961 font_pop();
962 }
963
964 static int
965 pre_bk(DECL_ARGS)
966 {
967
968 switch (n->type) {
969 case MDOC_BLOCK:
970 return(1);
971 case MDOC_BODY:
972 outflags |= MMAN_Bk;
973 return(1);
974 default:
975 return(0);
976 }
977 }
978
979 static void
980 post_bk(DECL_ARGS)
981 {
982
983 if (MDOC_BODY == n->type)
984 outflags &= ~MMAN_Bk;
985 }
986
987 static int
988 pre_bl(DECL_ARGS)
989 {
990 size_t icol;
991
992 /*
993 * print_offs() will increase the -offset to account for
994 * a possible enclosing .It, but any enclosed .It blocks
995 * just nest and do not add up their indentation.
996 */
997 if (n->norm->Bl.offs) {
998 print_offs(n->norm->Bl.offs, 0);
999 Bl_stack[Bl_stack_len++] = 0;
1000 }
1001
1002 switch (n->norm->Bl.type) {
1003 case LIST_enum:
1004 n->norm->Bl.count = 0;
1005 return(1);
1006 case LIST_column:
1007 break;
1008 default:
1009 return(1);
1010 }
1011
1012 if (n->nchild) {
1013 print_line(".TS", MMAN_nl);
1014 for (icol = 0; icol < n->norm->Bl.ncols; icol++)
1015 print_word("l");
1016 print_word(".");
1017 }
1018 outflags |= MMAN_nl;
1019 return(1);
1020 }
1021
1022 static void
1023 post_bl(DECL_ARGS)
1024 {
1025
1026 switch (n->norm->Bl.type) {
1027 case LIST_column:
1028 if (n->nchild)
1029 print_line(".TE", 0);
1030 break;
1031 case LIST_enum:
1032 n->norm->Bl.count = 0;
1033 break;
1034 default:
1035 break;
1036 }
1037
1038 if (n->norm->Bl.offs) {
1039 print_line(".RE", MMAN_nl);
1040 assert(Bl_stack_len);
1041 Bl_stack_len--;
1042 assert(0 == Bl_stack[Bl_stack_len]);
1043 } else {
1044 outflags |= MMAN_PP | MMAN_nl;
1045 outflags &= ~(MMAN_sp | MMAN_br);
1046 }
1047
1048 /* Maybe we are inside an enclosing list? */
1049 if (NULL != n->parent->next)
1050 mid_it();
1051
1052 }
1053
1054 static int
1055 pre_br(DECL_ARGS)
1056 {
1057
1058 outflags |= MMAN_br;
1059 return(0);
1060 }
1061
1062 static int
1063 pre_bx(DECL_ARGS)
1064 {
1065
1066 n = n->child;
1067 if (n) {
1068 print_word(n->string);
1069 outflags &= ~MMAN_spc;
1070 n = n->next;
1071 }
1072 print_word("BSD");
1073 if (NULL == n)
1074 return(0);
1075 outflags &= ~MMAN_spc;
1076 print_word("-");
1077 outflags &= ~MMAN_spc;
1078 print_word(n->string);
1079 return(0);
1080 }
1081
1082 static int
1083 pre_dl(DECL_ARGS)
1084 {
1085
1086 print_offs("6n", 0);
1087 return(1);
1088 }
1089
1090 static void
1091 post_dl(DECL_ARGS)
1092 {
1093
1094 print_line(".RE", MMAN_nl);
1095
1096 /* Maybe we are inside an enclosing list? */
1097 if (NULL != n->parent->next)
1098 mid_it();
1099 }
1100
1101 static int
1102 pre_em(DECL_ARGS)
1103 {
1104
1105 font_push('I');
1106 return(1);
1107 }
1108
1109 static int
1110 pre_en(DECL_ARGS)
1111 {
1112
1113 if (NULL == n->norm->Es ||
1114 NULL == n->norm->Es->child)
1115 return(1);
1116
1117 print_word(n->norm->Es->child->string);
1118 outflags &= ~MMAN_spc;
1119 return(1);
1120 }
1121
1122 static void
1123 post_en(DECL_ARGS)
1124 {
1125
1126 if (NULL == n->norm->Es ||
1127 NULL == n->norm->Es->child ||
1128 NULL == n->norm->Es->child->next)
1129 return;
1130
1131 outflags &= ~MMAN_spc;
1132 print_word(n->norm->Es->child->next->string);
1133 return;
1134 }
1135
1136 static int
1137 pre_eo(DECL_ARGS)
1138 {
1139
1140 if (n->end == ENDBODY_NOT &&
1141 n->parent->head->child == NULL &&
1142 n->child != NULL &&
1143 n->child->end != ENDBODY_NOT)
1144 print_word("\\&");
1145 else if (n->end != ENDBODY_NOT ? n->child != NULL :
1146 n->parent->head->child != NULL && (n->child != NULL ||
1147 (n->parent->tail != NULL && n->parent->tail->child != NULL)))
1148 outflags &= ~(MMAN_spc | MMAN_nl);
1149 return(1);
1150 }
1151
1152 static void
1153 post_eo(DECL_ARGS)
1154 {
1155 int body, tail;
1156
1157 if (n->end != ENDBODY_NOT) {
1158 outflags |= MMAN_spc;
1159 return;
1160 }
1161
1162 body = n->child != NULL || n->parent->head->child != NULL;
1163 tail = n->parent->tail != NULL && n->parent->tail->child != NULL;
1164
1165 if (body && tail)
1166 outflags &= ~MMAN_spc;
1167 else if ( ! (body || tail))
1168 print_word("\\&");
1169 else if ( ! tail)
1170 outflags |= MMAN_spc;
1171 }
1172
1173 static int
1174 pre_fa(DECL_ARGS)
1175 {
1176 int am_Fa;
1177
1178 am_Fa = MDOC_Fa == n->tok;
1179
1180 if (am_Fa)
1181 n = n->child;
1182
1183 while (NULL != n) {
1184 font_push('I');
1185 if (am_Fa || MDOC_SYNPRETTY & n->flags)
1186 outflags |= MMAN_nbrword;
1187 print_node(meta, n);
1188 font_pop();
1189 if (NULL != (n = n->next))
1190 print_word(",");
1191 }
1192 return(0);
1193 }
1194
1195 static void
1196 post_fa(DECL_ARGS)
1197 {
1198
1199 if (NULL != n->next && MDOC_Fa == n->next->tok)
1200 print_word(",");
1201 }
1202
1203 static int
1204 pre_fd(DECL_ARGS)
1205 {
1206
1207 pre_syn(n);
1208 font_push('B');
1209 return(1);
1210 }
1211
1212 static void
1213 post_fd(DECL_ARGS)
1214 {
1215
1216 font_pop();
1217 outflags |= MMAN_br;
1218 }
1219
1220 static int
1221 pre_fl(DECL_ARGS)
1222 {
1223
1224 font_push('B');
1225 print_word("\\-");
1226 if (n->nchild)
1227 outflags &= ~MMAN_spc;
1228 return(1);
1229 }
1230
1231 static void
1232 post_fl(DECL_ARGS)
1233 {
1234
1235 font_pop();
1236 if ( ! (n->nchild ||
1237 n->next == NULL ||
1238 n->next->type == MDOC_TEXT ||
1239 n->next->flags & MDOC_LINE))
1240 outflags &= ~MMAN_spc;
1241 }
1242
1243 static int
1244 pre_fn(DECL_ARGS)
1245 {
1246
1247 pre_syn(n);
1248
1249 n = n->child;
1250 if (NULL == n)
1251 return(0);
1252
1253 if (MDOC_SYNPRETTY & n->flags)
1254 print_block(".HP 4n", MMAN_nl);
1255
1256 font_push('B');
1257 print_node(meta, n);
1258 font_pop();
1259 outflags &= ~MMAN_spc;
1260 print_word("(");
1261 outflags &= ~MMAN_spc;
1262
1263 n = n->next;
1264 if (NULL != n)
1265 pre_fa(meta, n);
1266 return(0);
1267 }
1268
1269 static void
1270 post_fn(DECL_ARGS)
1271 {
1272
1273 print_word(")");
1274 if (MDOC_SYNPRETTY & n->flags) {
1275 print_word(";");
1276 outflags |= MMAN_PP;
1277 }
1278 }
1279
1280 static int
1281 pre_fo(DECL_ARGS)
1282 {
1283
1284 switch (n->type) {
1285 case MDOC_BLOCK:
1286 pre_syn(n);
1287 break;
1288 case MDOC_HEAD:
1289 if (n->child == NULL)
1290 return(0);
1291 if (MDOC_SYNPRETTY & n->flags)
1292 print_block(".HP 4n", MMAN_nl);
1293 font_push('B');
1294 break;
1295 case MDOC_BODY:
1296 outflags &= ~(MMAN_spc | MMAN_nl);
1297 print_word("(");
1298 outflags &= ~MMAN_spc;
1299 break;
1300 default:
1301 break;
1302 }
1303 return(1);
1304 }
1305
1306 static void
1307 post_fo(DECL_ARGS)
1308 {
1309
1310 switch (n->type) {
1311 case MDOC_HEAD:
1312 if (n->child != NULL)
1313 font_pop();
1314 break;
1315 case MDOC_BODY:
1316 post_fn(meta, n);
1317 break;
1318 default:
1319 break;
1320 }
1321 }
1322
1323 static int
1324 pre_ft(DECL_ARGS)
1325 {
1326
1327 pre_syn(n);
1328 font_push('I');
1329 return(1);
1330 }
1331
1332 static int
1333 pre_in(DECL_ARGS)
1334 {
1335
1336 if (MDOC_SYNPRETTY & n->flags) {
1337 pre_syn(n);
1338 font_push('B');
1339 print_word("#include <");
1340 outflags &= ~MMAN_spc;
1341 } else {
1342 print_word("<");
1343 outflags &= ~MMAN_spc;
1344 font_push('I');
1345 }
1346 return(1);
1347 }
1348
1349 static void
1350 post_in(DECL_ARGS)
1351 {
1352
1353 if (MDOC_SYNPRETTY & n->flags) {
1354 outflags &= ~MMAN_spc;
1355 print_word(">");
1356 font_pop();
1357 outflags |= MMAN_br;
1358 } else {
1359 font_pop();
1360 outflags &= ~MMAN_spc;
1361 print_word(">");
1362 }
1363 }
1364
1365 static int
1366 pre_it(DECL_ARGS)
1367 {
1368 const struct mdoc_node *bln;
1369
1370 switch (n->type) {
1371 case MDOC_HEAD:
1372 outflags |= MMAN_PP | MMAN_nl;
1373 bln = n->parent->parent;
1374 if (0 == bln->norm->Bl.comp ||
1375 (NULL == n->parent->prev &&
1376 NULL == bln->parent->prev))
1377 outflags |= MMAN_sp;
1378 outflags &= ~MMAN_br;
1379 switch (bln->norm->Bl.type) {
1380 case LIST_item:
1381 return(0);
1382 case LIST_inset:
1383 /* FALLTHROUGH */
1384 case LIST_diag:
1385 /* FALLTHROUGH */
1386 case LIST_ohang:
1387 if (bln->norm->Bl.type == LIST_diag)
1388 print_line(".B \"", 0);
1389 else
1390 print_line(".R \"", 0);
1391 outflags &= ~MMAN_spc;
1392 return(1);
1393 case LIST_bullet:
1394 /* FALLTHROUGH */
1395 case LIST_dash:
1396 /* FALLTHROUGH */
1397 case LIST_hyphen:
1398 print_width(&bln->norm->Bl, NULL);
1399 TPremain = 0;
1400 outflags |= MMAN_nl;
1401 font_push('B');
1402 if (LIST_bullet == bln->norm->Bl.type)
1403 print_word("\\(bu");
1404 else
1405 print_word("-");
1406 font_pop();
1407 outflags |= MMAN_nl;
1408 return(0);
1409 case LIST_enum:
1410 print_width(&bln->norm->Bl, NULL);
1411 TPremain = 0;
1412 outflags |= MMAN_nl;
1413 print_count(&bln->norm->Bl.count);
1414 outflags |= MMAN_nl;
1415 return(0);
1416 case LIST_hang:
1417 print_width(&bln->norm->Bl, n->child);
1418 TPremain = 0;
1419 outflags |= MMAN_nl;
1420 return(1);
1421 case LIST_tag:
1422 print_width(&bln->norm->Bl, n->child);
1423 putchar('\n');
1424 outflags &= ~MMAN_spc;
1425 return(1);
1426 default:
1427 return(1);
1428 }
1429 default:
1430 break;
1431 }
1432 return(1);
1433 }
1434
1435 /*
1436 * This function is called after closing out an indented block.
1437 * If we are inside an enclosing list, restore its indentation.
1438 */
1439 static void
1440 mid_it(void)
1441 {
1442 char buf[24];
1443
1444 /* Nothing to do outside a list. */
1445 if (0 == Bl_stack_len || 0 == Bl_stack[Bl_stack_len - 1])
1446 return;
1447
1448 /* The indentation has already been set up. */
1449 if (Bl_stack_post[Bl_stack_len - 1])
1450 return;
1451
1452 /* Restore the indentation of the enclosing list. */
1453 print_line(".RS", MMAN_Bk_susp);
1454 (void)snprintf(buf, sizeof(buf), "%dn",
1455 Bl_stack[Bl_stack_len - 1]);
1456 print_word(buf);
1457
1458 /* Remeber to close out this .RS block later. */
1459 Bl_stack_post[Bl_stack_len - 1] = 1;
1460 }
1461
1462 static void
1463 post_it(DECL_ARGS)
1464 {
1465 const struct mdoc_node *bln;
1466
1467 bln = n->parent->parent;
1468
1469 switch (n->type) {
1470 case MDOC_HEAD:
1471 switch (bln->norm->Bl.type) {
1472 case LIST_diag:
1473 outflags &= ~MMAN_spc;
1474 print_word("\\ ");
1475 break;
1476 case LIST_ohang:
1477 outflags |= MMAN_br;
1478 break;
1479 default:
1480 break;
1481 }
1482 break;
1483 case MDOC_BODY:
1484 switch (bln->norm->Bl.type) {
1485 case LIST_bullet:
1486 /* FALLTHROUGH */
1487 case LIST_dash:
1488 /* FALLTHROUGH */
1489 case LIST_hyphen:
1490 /* FALLTHROUGH */
1491 case LIST_enum:
1492 /* FALLTHROUGH */
1493 case LIST_hang:
1494 /* FALLTHROUGH */
1495 case LIST_tag:
1496 assert(Bl_stack_len);
1497 Bl_stack[--Bl_stack_len] = 0;
1498
1499 /*
1500 * Our indentation had to be restored
1501 * after a child display or child list.
1502 * Close out that indentation block now.
1503 */
1504 if (Bl_stack_post[Bl_stack_len]) {
1505 print_line(".RE", MMAN_nl);
1506 Bl_stack_post[Bl_stack_len] = 0;
1507 }
1508 break;
1509 case LIST_column:
1510 if (NULL != n->next) {
1511 putchar('\t');
1512 outflags &= ~MMAN_spc;
1513 }
1514 break;
1515 default:
1516 break;
1517 }
1518 break;
1519 default:
1520 break;
1521 }
1522 }
1523
1524 static void
1525 post_lb(DECL_ARGS)
1526 {
1527
1528 if (SEC_LIBRARY == n->sec)
1529 outflags |= MMAN_br;
1530 }
1531
1532 static int
1533 pre_lk(DECL_ARGS)
1534 {
1535 const struct mdoc_node *link, *descr;
1536
1537 if (NULL == (link = n->child))
1538 return(0);
1539
1540 if (NULL != (descr = link->next)) {
1541 font_push('I');
1542 while (NULL != descr) {
1543 print_word(descr->string);
1544 descr = descr->next;
1545 }
1546 print_word(":");
1547 font_pop();
1548 }
1549
1550 font_push('B');
1551 print_word(link->string);
1552 font_pop();
1553 return(0);
1554 }
1555
1556 static int
1557 pre_ll(DECL_ARGS)
1558 {
1559
1560 print_line(".ll", 0);
1561 return(1);
1562 }
1563
1564 static int
1565 pre_li(DECL_ARGS)
1566 {
1567
1568 font_push('R');
1569 return(1);
1570 }
1571
1572 static int
1573 pre_nm(DECL_ARGS)
1574 {
1575 char *name;
1576
1577 if (MDOC_BLOCK == n->type) {
1578 outflags |= MMAN_Bk;
1579 pre_syn(n);
1580 }
1581 if (MDOC_ELEM != n->type && MDOC_HEAD != n->type)
1582 return(1);
1583 name = n->child ? n->child->string : meta->name;
1584 if (NULL == name)
1585 return(0);
1586 if (MDOC_HEAD == n->type) {
1587 if (NULL == n->parent->prev)
1588 outflags |= MMAN_sp;
1589 print_block(".HP", 0);
1590 printf(" %zun", strlen(name) + 1);
1591 outflags |= MMAN_nl;
1592 }
1593 font_push('B');
1594 if (NULL == n->child)
1595 print_word(meta->name);
1596 return(1);
1597 }
1598
1599 static void
1600 post_nm(DECL_ARGS)
1601 {
1602
1603 switch (n->type) {
1604 case MDOC_BLOCK:
1605 outflags &= ~MMAN_Bk;
1606 break;
1607 case MDOC_HEAD:
1608 /* FALLTHROUGH */
1609 case MDOC_ELEM:
1610 if (n->child != NULL || meta->name != NULL)
1611 font_pop();
1612 break;
1613 default:
1614 break;
1615 }
1616 }
1617
1618 static int
1619 pre_no(DECL_ARGS)
1620 {
1621
1622 outflags |= MMAN_spc_force;
1623 return(1);
1624 }
1625
1626 static int
1627 pre_ns(DECL_ARGS)
1628 {
1629
1630 outflags &= ~MMAN_spc;
1631 return(0);
1632 }
1633
1634 static void
1635 post_pf(DECL_ARGS)
1636 {
1637
1638 if ( ! (n->next == NULL || n->next->flags & MDOC_LINE))
1639 outflags &= ~MMAN_spc;
1640 }
1641
1642 static int
1643 pre_pp(DECL_ARGS)
1644 {
1645
1646 if (MDOC_It != n->parent->tok)
1647 outflags |= MMAN_PP;
1648 outflags |= MMAN_sp | MMAN_nl;
1649 outflags &= ~MMAN_br;
1650 return(0);
1651 }
1652
1653 static int
1654 pre_rs(DECL_ARGS)
1655 {
1656
1657 if (SEC_SEE_ALSO == n->sec) {
1658 outflags |= MMAN_PP | MMAN_sp | MMAN_nl;
1659 outflags &= ~MMAN_br;
1660 }
1661 return(1);
1662 }
1663
1664 static int
1665 pre_rv(DECL_ARGS)
1666 {
1667 int nchild;
1668
1669 outflags |= MMAN_br | MMAN_nl;
1670
1671 nchild = n->nchild;
1672 if (nchild > 0) {
1673 print_word("The");
1674
1675 for (n = n->child; n; n = n->next) {
1676 font_push('B');
1677 print_word(n->string);
1678 font_pop();
1679
1680 outflags &= ~MMAN_spc;
1681 print_word("()");
1682
1683 if (n->next == NULL)
1684 continue;
1685
1686 if (nchild > 2) {
1687 outflags &= ~MMAN_spc;
1688 print_word(",");
1689 }
1690 if (n->next->next == NULL)
1691 print_word("and");
1692 }
1693
1694 if (nchild > 1)
1695 print_word("functions return");
1696 else
1697 print_word("function returns");
1698
1699 print_word("the value\\~0 if successful;");
1700 } else
1701 print_word("Upon successful completion, "
1702 "the value\\~0 is returned;");
1703
1704 print_word("otherwise the value\\~\\-1 is returned"
1705 " and the global variable");
1706
1707 font_push('I');
1708 print_word("errno");
1709 font_pop();
1710
1711 print_word("is set to indicate the error.");
1712 outflags |= MMAN_nl;
1713 return(0);
1714 }
1715
1716 static int
1717 pre_skip(DECL_ARGS)
1718 {
1719
1720 return(0);
1721 }
1722
1723 static int
1724 pre_sm(DECL_ARGS)
1725 {
1726
1727 if (NULL == n->child)
1728 outflags ^= MMAN_Sm;
1729 else if (0 == strcmp("on", n->child->string))
1730 outflags |= MMAN_Sm;
1731 else
1732 outflags &= ~MMAN_Sm;
1733
1734 if (MMAN_Sm & outflags)
1735 outflags |= MMAN_spc;
1736
1737 return(0);
1738 }
1739
1740 static int
1741 pre_sp(DECL_ARGS)
1742 {
1743
1744 if (MMAN_PP & outflags) {
1745 outflags &= ~MMAN_PP;
1746 print_line(".PP", 0);
1747 } else
1748 print_line(".sp", 0);
1749 return(1);
1750 }
1751
1752 static void
1753 post_sp(DECL_ARGS)
1754 {
1755
1756 outflags |= MMAN_nl;
1757 }
1758
1759 static int
1760 pre_sy(DECL_ARGS)
1761 {
1762
1763 font_push('B');
1764 return(1);
1765 }
1766
1767 static int
1768 pre_vt(DECL_ARGS)
1769 {
1770
1771 if (MDOC_SYNPRETTY & n->flags) {
1772 switch (n->type) {
1773 case MDOC_BLOCK:
1774 pre_syn(n);
1775 return(1);
1776 case MDOC_BODY:
1777 break;
1778 default:
1779 return(0);
1780 }
1781 }
1782 font_push('I');
1783 return(1);
1784 }
1785
1786 static void
1787 post_vt(DECL_ARGS)
1788 {
1789
1790 if (MDOC_SYNPRETTY & n->flags && MDOC_BODY != n->type)
1791 return;
1792 font_pop();
1793 }
1794
1795 static int
1796 pre_xr(DECL_ARGS)
1797 {
1798
1799 n = n->child;
1800 if (NULL == n)
1801 return(0);
1802 print_node(meta, n);
1803 n = n->next;
1804 if (NULL == n)
1805 return(0);
1806 outflags &= ~MMAN_spc;
1807 print_word("(");
1808 print_node(meta, n);
1809 print_word(")");
1810 return(0);
1811 }
1812
1813 static int
1814 pre_ux(DECL_ARGS)
1815 {
1816
1817 print_word(manacts[n->tok].prefix);
1818 if (NULL == n->child)
1819 return(0);
1820 outflags &= ~MMAN_spc;
1821 print_word("\\ ");
1822 outflags &= ~MMAN_spc;
1823 return(1);
1824 }
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